CN216644343U

CN216644343U - Control system of geothermal energy heat exchange station

Info

Publication number: CN216644343U
Application number: CN202123452662.7U
Authority: CN
Inventors: 过继伟; 葛雪锋; 张帆; 赵博飞
Original assignee: Zhejiang Zhengtai Juneng Technology Co ltd
Current assignee: Zhejiang Zhengtai Juneng Technology Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-05-31
Anticipated expiration: 2031-12-31

Abstract

The embodiment of the application provides a geothermal energy heat exchange station control system, relates to geothermal energy heating technical field. The control unit is respectively connected with the power pump integration unit, the parameter acquisition unit and the demand storage unit electrically, the power pump integration unit is communicated with the communication pipeline, the parameter acquisition unit is arranged on the communication pipeline and used for acquiring medium parameters in the communication pipeline and sending the medium parameters to the control unit, the demand storage unit is used for sending the load demand value to the control unit, and the control unit is used for controlling the power pump integration unit according to the load demand value and the medium parameters. Therefore, the control unit can realize the integral operation of the geothermal energy heat exchange station according to the load demand value and the medium parameter, and saves the operation energy consumption.

Description

Control system of geothermal energy heat exchange station

Technical Field

The application relates to the technical field of geothermal energy heating, in particular to a control system of a geothermal energy heat exchange station.

Background

Because the hydrothermal geothermal energy heat exchange station has the difference on the system with the traditional heating heat exchange station, the hydrothermal geothermal energy heat exchange station adopts the direct supply of geothermal energy and the coupling heating of a water source heat pump. At present, most hydrothermal geothermal energy heat exchange stations are controlled by water pumps, water source heat pump hosts and the like independently, and the problems of lag in regulation, high system operation energy consumption, low geothermal energy utilization rate and the like exist.

SUMMERY OF THE UTILITY MODEL

Based on above-mentioned research, this application provides a geothermal energy heat exchange station control system, can carry out holistic operation control, practices thrift the operation energy consumption.

Embodiments of the present application may be implemented by:

in a first aspect, an embodiment of the present application provides a geothermal energy heat exchange station control system, where the geothermal energy heat exchange station control system includes a control unit, a power pump integration unit, a parameter acquisition unit, a load demand storage unit, and a communication pipeline; the control unit is respectively and electrically connected with the power pump integration unit, the parameter acquisition unit and the demand storage unit; the power pump integrated unit is communicated with the communicating pipeline;

the parameter acquisition unit is arranged on the communication pipeline and is used for acquiring medium parameters in the communication pipeline and sending the medium parameters to the control unit;

the demand storage unit stores a load demand value, and is used for sending the load demand value to the control unit;

and the control unit is used for controlling the power pump integrated unit according to the load demand value and the medium parameter.

In an optional embodiment, the power pump integrated unit comprises a deep well pump module, a heat source pressurizing pump module, a recharging pressurizing pump module, a water source heat pump unit module, a two-network circulating pump module and a heat exchange module;

the control unit is respectively and electrically connected with the deep-well pump module, the heat source pressurizing pump module, the recharging pressurizing pump module, the water source heat pump unit module and the two-network circulating pump module;

the deep-well pump module, the heat source pressure pump module, the recharging pressure pump module, the water source heat pump unit module, the two-network circulating pump module and the heat exchange module are communicated through the communicating pipeline.

In an optional embodiment, the water source heat pump unit module comprises a condensation module and an evaporation module;

one end of the deep well pump module is communicated with a water source, the other end of the deep well pump module is communicated with one end of the heat source pressurizing pump module through the communicating pipeline, and the other end of the heat source pressurizing pump module is communicated with the first port of the heat exchange module through the communicating pipeline;

the second port of the heat exchange module is communicated with a user water supply port through the communicating pipeline, the third port of the heat exchange module is communicated with the two-network circulating pump module through the communicating pipeline, and the fourth port of the heat exchange module is communicated with the first port of the evaporation module through the communicating pipeline;

one end of the recharge pressure pump module is respectively communicated with the fourth port of the heat exchange module and the second port of the evaporation module through the communication pipeline, and the other end of the recharge pressure pump module is communicated with a recharge geothermal well water source;

one end of the two-network circulating pump module is respectively communicated with the first port of the condensation module and the third port of the heat exchange module through the communication pipeline, and the other end of the two-network circulating pump module is communicated with a user water return port through the communication pipeline;

and the second port of the condensation module is communicated with the user water supply port through the communication pipeline.

In an optional embodiment, the geothermal energy heat exchange station control system comprises a cyclone filter, a coarse filter and a fine filter;

one end of the cyclone filter is communicated with the deep-well pump module through the communicating pipeline, and the other end of the cyclone filter is communicated with one end of the heat source pressurizing pump module through the communicating pipeline;

one end of the coarse filter is communicated with the other end of the heat source pressurizing pump module through the communicating pipeline, and the other end of the coarse filter is communicated with the first port of the heat exchange module through the communicating pipeline;

one end of the fine filter is communicated with the fourth port of the heat exchange module and the second port of the evaporation module through the communication pipeline respectively, and the other end of the fine filter is communicated with the recharging pressure pump module through the communication pipeline.

In an optional embodiment, the geothermal energy heat exchange station control system comprises a basket filter, one end of the basket filter is communicated with a user return water end through the communication pipeline, and the other end of the basket filter is communicated with the two-net circulating pump module through the communication pipeline.

In an optional embodiment, the geothermal energy heat exchange station control system comprises a first switch, a second switch, a first opening degree control switch and a second opening degree control switch; the first switch, the second switch, the first opening control switch and the second opening control switch are respectively electrically connected with the control unit;

the first switch is arranged on a communication pipeline which communicates the recharging pressure pump module with the fourth port of the heat exchange module;

the second switch is arranged on a communication pipeline which communicates the fourth ports of the evaporation module and the heat exchange module;

the first opening control switch is arranged on a communication pipeline which communicates the user water supply port with the second port of the heat exchange module;

the second opening control switch is arranged on a communication pipeline for communicating the user water supply port with the second port of the condensation module.

In an optional embodiment, the power pump integrated unit further includes a water replenishing pump module, one end of the water replenishing pump module is communicated with a water source through the communicating pipe, and the other end of the water replenishing pump module is communicated with a water return port of a user through the communicating pipe.

In an alternative embodiment, the parameter acquisition unit comprises at least one pressure acquisition module, at least one temperature acquisition module, and at least one flow acquisition module; the control unit is electrically connected with each pressure acquisition module, each temperature acquisition module and each flow acquisition module respectively.

Each pressure acquisition module is arranged at different positions of the communication pipeline and is used for acquiring liquid pressure at different positions;

each temperature acquisition module is arranged at different positions of the communication pipeline and is used for acquiring the liquid temperatures at different positions;

each flow acquisition module is arranged at different positions of the communication pipeline and used for acquiring liquid flow at different positions.

In an optional embodiment, the parameter acquisition unit further comprises an electric energy acquisition module and a heat acquisition module;

the electric energy acquisition module is respectively electrically connected with the power pump integration unit and the control unit and is used for acquiring electric energy information of the power pump integration unit and sending the electric energy information to the control unit;

the heat acquisition module is respectively electrically connected with the power pump integrated unit and the control unit and is used for acquiring heat information of the power pump integrated unit and sending the heat information to the control unit.

In an optional embodiment, the load demand storage unit comprises a temperature acquisition module, a light acquisition module, a wind speed acquisition module and a control module;

the control module is respectively and electrically connected with the temperature acquisition module, the illumination acquisition module, the wind speed acquisition module and the control unit;

the temperature acquisition module is used for acquiring outdoor temperature and transmitting the outdoor temperature to the control module;

the illumination acquisition module is used for acquiring outdoor illumination and transmitting the outdoor illumination to the control module;

the wind speed acquisition module is used for acquiring outdoor wind speed and transmitting the outdoor wind speed to the control module;

and the control module sends the outdoor temperature, the outdoor illumination, the outdoor wind speed and the pre-stored load requirement to the control unit.

The control system for the geothermal energy heat exchange station comprises a control unit, a power pump integration unit, a parameter acquisition unit, a load demand storage unit and a communication pipeline, wherein the control unit is connected with the power pump integration unit; the control unit is respectively electrically connected with the power pump integration unit, the parameter acquisition unit and the demand storage unit, the power pump integration unit is communicated with the communicating pipeline, the parameter acquisition unit is arranged on the communicating pipeline and is used for acquiring medium parameters in the communicating pipeline and sending the medium parameters to the control unit, the demand storage unit stores a load demand value, the demand storage unit is used for sending the load demand value to the control unit, and the control unit is used for controlling the power pump integration unit according to the load demand value and the medium parameters. Therefore, the control unit can realize the integral operation of the geothermal energy heat exchange station according to the load demand value and the medium parameter, and saves the operation energy consumption.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a geothermal energy heat exchange station control system provided by an embodiment of the application.

Fig. 2 is a schematic structural diagram of another geothermal energy heat exchange station control system provided by an embodiment of the application.

Fig. 3 is a schematic structural diagram of a geothermal energy heat exchange station control system provided by an embodiment of the application.

Fig. 4 is a schematic structural diagram of a geothermal energy heat exchange station control system provided by an embodiment of the application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Because hydrothermal type geothermal energy heat transfer station and traditional heating heat transfer station have difference on the system, hydrothermal type geothermal energy heat transfer station adopts geothermal energy direct supply and water source heat pump coupling heating, carries out system control according to original heat transfer station control mode, and each water pump, water source heat pump host computer etc. are controlled alone, like the whole heating season of deep-well pump power frequency operation always, have lag regulation, and system's operation energy consumption is higher, geothermal energy utilization rate low grade problem.

Based on the above research, in the control system for a geothermal energy heat exchange station provided in this embodiment, the control unit is electrically connected to the power pump integration unit, the parameter acquisition unit, and the demand storage unit, respectively, the power pump integration unit is communicated with the communication pipeline, and the parameter acquisition unit is disposed on the communication pipeline, wherein the parameter acquisition unit is configured to acquire a medium parameter in the communication pipeline and send the medium parameter to the control unit, the demand storage unit stores a load demand value, the demand storage unit is configured to send the load demand value to the control unit, and the control unit is configured to control the power pump integration unit according to the load demand value and the medium parameter. Therefore, the control unit can realize the integral operation of the geothermal energy heat exchange station according to the load demand value and the medium parameter, and saves the operation energy consumption.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a geothermal energy heat exchange station control system according to the embodiment. As shown in fig. 1, the control system of the geothermal energy heat exchange station provided by the present embodiment includes a control unit 10, a power pump integration unit 20, a parameter acquisition unit 30, a load demand storage unit 40, and a communication pipeline 50.

The control unit 10 is electrically connected with the power pump integrated unit 20, the parameter acquisition unit 30 and the demand storage unit 40 respectively, and the power pump integrated unit 20 is communicated with the communication pipeline 50.

The parameter collecting unit 30 is disposed on the communicating pipe 50, and the parameter collecting unit 30 is configured to collect a medium parameter in the communicating pipe 50 and send the medium parameter to the control unit 10.

The demand storage unit 40 stores a load demand value, and the demand storage unit 40 is configured to transmit the load demand value to the control unit 10.

The control unit 10 is used for controlling the power pump integrated unit 20 according to the load demand value and the medium parameter.

The control unit 10 may be a control unit composed of one or more processors. In the present embodiment, the processor 30 may include one or more processing cores (e.g., a single-core processor (S) or a multi-core processor (S)). Merely by way of example, the Processor 30 may include a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), an Application Specific Instruction Set Processor (ASIP), a Graphics Processing Unit (GPU), a Physical Processing Unit (PPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), a Programmable Logic Controller (PLC), a microcontroller Unit, a Reduced Instruction Set computer (Reduced Instruction Set computer, RISC), a microprocessor, or the like, or any combination thereof, Specific models of which are not limiting.

In this embodiment, the control unit 10 is configured to perform control of the geothermal energy heat exchange station, including control of the start, the shut-down of the geothermal energy heat exchange station, various operating parameters and functions of the geothermal energy heat exchange station during operation. The control unit 10 can be connected with the power pump integration unit 20, the parameter acquisition unit 30 and the requirement storage unit 40 through RS-485 communication lines, so as to realize data interaction.

In the present embodiment, the power pump integrated unit 20 includes the respective power pumps of the geothermal energy heat exchange station, and control circuits of the respective pumps. Each power pump is electrically connected to its corresponding control circuit, and the control circuit of each power pump is electrically connected to the control unit 10. In this embodiment, the control circuit of each power pump may be implemented by a PLC circuit, and includes functions of frequency control, manual and automatic control mode switching, and fault alarm.

In this embodiment, the communication pipe 50 is a pipe for conveying a medium (such as liquid water), and the pumps in the power pump integrated unit 20 are communicated through the communication pipe and provide hot water to a user through the communication pipe 50, so as to realize heating.

In this embodiment, the parameter collecting unit 30 includes a pressure collecting module, a temperature collecting module, and a flow collecting module. The pressure acquisition module can be composed of a pressure sensor, the temperature acquisition module can be composed of a temperature sensor, and the flow acquisition module can be composed of a flowmeter.

In this embodiment, the control unit 10 is electrically connected to the pressure acquisition module, the temperature acquisition module, and the flow acquisition module, respectively. Wherein, the pressure acquisition module is arranged on the communication pipeline 50 and used for acquiring the liquid pressure and sending the liquid pressure to the control unit 10. The temperature acquisition module is arranged on the communication pipeline 50 and used for acquiring the liquid temperature and sending the liquid temperature to the control unit 10. The flow collection module is disposed on the communication pipeline 50, and is configured to collect the liquid flow and send the liquid flow to the control unit 10.

In the present embodiment, the demand storage unit 40 may be an electronic device with a storage function, such as a personal computer, a terminal device, and the like, the demand storage unit 40 is electrically connected or communicatively connected to the control unit 10, and the demand storage unit 40 is used for storing the load demand value of the geothermal energy heat exchange station.

The present embodiment may store the load demand values in the demand storage unit 40 for different demand conditions in advance, and then the demand storage unit 40 sends the load demand values to the control unit 10. After receiving the load demand and the medium parameter, the control unit 10 controls the power pump integrated unit 20 according to the load demand and the medium parameter.

In this embodiment, the load demand value is a heat load value required by the geothermal energy heat exchange station, and when the power pump integration unit 20 is controlled according to the load demand value and the medium parameter, the target medium parameter corresponding to the load demand value may be calculated based on the load demand value or searched in a pre-stored data table, and then the power pump integration unit 20 is controlled to operate according to the difference between the target medium parameter and the acquired medium parameter, so that the geothermal energy heat exchange station reaches the required heat load value. Wherein, the data table stores the corresponding relation between different load demand values and medium parameters.

In this embodiment, the load demand value may also include a heat load value required by the geothermal energy heat exchange station and a target medium parameter corresponding to the required heat load value, and when the power pump integration unit 20 is controlled according to the load demand value and the medium parameter, the difference between the target medium parameter and the medium parameter may be directly calculated, and the power pump integration unit 20 is controlled to operate according to the target medium parameter and the difference between the acquired medium parameters, so as to enable the geothermal energy heat exchange station to reach the required heat load value.

The control unit is electrically connected with the power pump integrated unit, the parameter acquisition unit and the demand storage unit respectively, the power pump integrated unit is communicated with the communicating pipeline, and the parameter acquisition unit is arranged on the communicating pipeline, so that after the parameter acquisition unit transmits the medium parameters to the control unit and the demand storage unit transmits the load demand values to the control unit, the control unit can integrally control the power pump integrated unit according to the load demand values and the medium parameters, the integral operation of the geothermal energy heat exchange station is realized, and the operation energy consumption is saved.

In order to realize the heat exchange of geothermal heat and the supply of geothermal energy, in the embodiment, please refer to fig. 2 in combination, the power pump integrated unit 20 includes a deep well pump module 21, a heat source pressurizing pump module 22, a recharging pressurizing pump module 23, a water source heat pump unit module 24, a two-network circulating pump module 25, and a heat exchange module 26.

The control unit 10 is electrically connected with a deep-well pump module 21, a heat source pressurizing pump module 22, a recharging pressurizing pump module 23, a water source heat pump unit module 24 and a two-network circulating pump module 25 respectively.

The deep-well pump module 21, the heat source pressurizing pump module 22, the recharging pressurizing pump module 23, the water source heat pump unit module 24, the two-network circulating pump module 25 and the heat exchange module 26 are communicated through communicating pipelines.

The deep well pump module 21 comprises a deep well pump and a control circuit corresponding to the deep well pump, the control circuit corresponding to the deep well pump can be realized through a PLC circuit, and the control circuit comprises functions of frequency control, manual and automatic control mode switching, fault alarm and the like.

The heat source pressurizing pump module 22 includes at least two heat source pressurizing pumps and a control circuit corresponding to the heat source pressurizing pumps, where the at least two heat source pressurizing pumps include at least one standby heat source heating pump. The control circuit corresponding to the heat source pressurizing pump can be realized through a PLC circuit, and comprises the functions of frequency control, standby pump switching, fault alarm, manual and automatic control mode switching and the like.

The recharging pressure pump module 23 includes at least two recharging pressure pumps and control circuits corresponding to the recharging pressure pumps, where the at least two recharging pressure pumps include at least one standby recharging pressure pump. The control circuit corresponding to the recharging pressure pump can be realized through a PLC circuit, and comprises the functions of frequency control, standby pump switching, fault alarm, manual and automatic control mode switching and the like.

The water source heat pump unit module 24 comprises a condensation module and an evaporation module, wherein the condensation module comprises a condenser and a corresponding control circuit, and the evaporation module comprises an evaporator and a corresponding control circuit. The control circuit of the condenser and the control circuit of the evaporator can be realized through a PLC circuit, and the functions of starting and closing control, load output adjustment, fault alarm and the like are included.

The two-network circulating pump module 25 comprises at least 2 circulating pumps with rated flow of 65% of the two-network circulating design flow and a control circuit corresponding to the circulating pumps. The control circuit corresponding to the circulating pump can be realized through a PLC circuit and comprises functions of starting and closing control hand automatic switching control, fault alarm and the like.

The heat exchange module 26 may be a plate heat exchanger, and includes four ports, and in this embodiment, the deep-well pump module 21, the heat source pressure pump module 22, the recharge pressure pump module 23, the water source heat pump unit module 24, the two-network circulation pump module 25, and the heat exchange module 26 are communicated with each other through a communication pipe.

In this embodiment, the control unit 10 is electrically connected to the deep-well pump module 21, the heat source pressurizing pump module 22, the recharge pressurizing pump module 23, the water source heat pump unit module 24, and the two-network circulation pump module 25, respectively, and it is shown that the control unit 10 is electrically connected to the control circuit corresponding to the deep-well pump, the control circuit corresponding to the heat source pressurizing pump, the control circuit corresponding to the recharge pressurizing pump, the control current corresponding to the water source heat pump unit, and the control circuit corresponding to the two-network circulation pump, respectively.

In the present embodiment, the deep-well pump module 21, the heat source pressurizing pump module 22, the recharging pressurizing pump module 23, the water source heat pump unit module 24, the two-network circulating pump module 25 and the heat exchange module 26 are communicated with each other through a communication pipeline, which means that the deep-well pump, the heat source pressurizing pump, the recharging pressurizing pump, the water source heat pump unit, the two-network circulating pump and the heat exchanger are communicated with each other through a communication pipeline 50.

In detail, one end of the deep-well pump module 21 is communicated with a water source, the other end is communicated with one end of the heat source pressurizing pump module 22 through a communication pipeline 50, and the other end of the heat source pressurizing pump module 22 is communicated with the first port of the heat exchange module 26 through the communication pipeline 50.

The second port of the heat exchange module 26 is communicated with the water supply port of the user through a communicating pipeline 50, the third port of the heat exchange module 26 is communicated with the two-network circulating pump module 25 through a communicating pipeline 50, and the fourth port of the heat exchange module 26 is communicated with the first port of the evaporation module through a communicating pipeline 50.

One end of the recharge pressure pump module 23 is respectively communicated with the fourth port of the heat exchange module 26 and the second port of the evaporation module through a communication pipeline 50, and the other end is communicated with a recharge geothermal well water source.

One end of the two-network circulating pump module 25 is communicated with the first port of the condensation module and the third port of the heat exchange module 26 through the communication pipeline 50, and the other end is communicated with the water return port of the user through the communication pipeline 50.

The second port of the condensing module is in communication with the user water supply port via a communication conduit 50.

As shown in fig. 3, one end of the deep well pump is communicated with a geothermal well water source, the other end of the deep well pump is communicated with one end of a heat source pressurizing pump through a communicating pipeline 50, the other end of the heat source pressurizing pump is communicated with a first port of a heat exchanger through the communicating pipeline 50, a second port of the heat exchanger is communicated with a water supply port of a user through the communicating pipeline 50, a third port of the heat exchanger is communicated with a two-network circulating pump through the communicating pipeline 50, and a fourth port of the heat exchanger is communicated with a first port of an evaporator through the communicating pipeline 50. The fourth port of the heat exchanger is communicated with one end of the recharging pressure pump through a communicating pipeline 50, the end of the recharging pressure pump is communicated with the second port of the evaporator through the communicating pipeline 50, and meanwhile, the other end of the recharging pressure pump is communicated with a recharging geothermal well water source through the communicating pipeline 50.

In this embodiment, one end of the two-network circulating pump is communicated with the first port of the condenser and the third port of the heat exchanger through the communicating pipe 50, the other end of the two-network circulating pump is communicated with the water return port of the user through the communicating pipe 50, and the second port of the condenser is communicated with the water supply port of the user through the communicating pipe 50.

Based on the structure, the geothermal energy heat exchange station control system provided by the embodiment can realize a cascade utilization mode. For example, after geothermal water in a geothermal well is pumped out by a deep well pump, the geothermal water can be pressurized by a heat source pressurizing pump and sent into a heat exchanger to exchange heat with user return water flowing into the heat exchanger through a two-network circulating pump, then the user return water enters a user water supply end through a second port to supply heat for a user, and the geothermal water after heat exchange enters a recharging pressurizing pump to be recharged by pressurization and then flows into the heat source pressurizing pump. For another example, after the geothermal water in the geothermal well is pumped out by the deep well pump, the geothermal water can be pressurized by the heat source pressurizing pump and sent into the heat exchanger to perform first-stage heat exchange with user return water flowing into the heat exchanger through the two-network circulating pump, then the geothermal water enters the evaporator module in the water source heat pump unit, the geothermal water after heat exchange is cooled by the evaporator, then enters the recharging pressurizing pump through the second port of the evaporator, is pressurized and recharged, and flows into the geothermal well water source. And the user backwater after the heat exchange of the condenser module of the water source heat pump unit and the user backwater after the heat exchange of the heat exchanger are sent to a user water supply end together to supply heat for users.

The geothermal energy heat exchange station control system provided by the embodiment can adopt different operation modes aiming at different load requirements by means of geothermal gradient utilization, thereby achieving the overall control of the geothermal energy heat exchange station and saving energy consumption.

In view of the practical application, geothermal water has impurities and is easy to block a communication pipeline, so the geothermal energy heat exchange station control system provided by the embodiment comprises a cyclone filter, a coarse filter and a fine filter.

One end of the cyclone filter is communicated with the deep-well pump module 21 through a communicating pipeline 50, and the other end is communicated with one end of the heat source pressurizing pump module 22 through a communicating pipeline.

One end of the coarse filter is communicated with the other end of the heat source pressurizing pump module 22 through a communication pipeline 50, and the other end of the coarse filter is communicated with the first port of the heat exchange module 26 through a communication pipeline 50.

One end of the fine filter is respectively communicated with the fourth port of the heat exchange module 26 and the second port of the evaporation module through a communication pipeline 50, and the other end of the fine filter is communicated with the recharge pressurization pump module 23 through a communication pipeline 50.

As shown in fig. 3, one end of the cyclone filter is connected to the deep-well pump through a connecting pipe 50, and the other end is connected to one end of the heat source pressurizing pump through a connecting pipe 50. One end of the coarse filter is communicated with the other end of the heat source pressurizing pump through a communicating pipeline 50, and the other end of the coarse filter is communicated with the first port of the heat exchanger through the communicating pipeline 50. One end of the fine filter is respectively communicated with the fourth port of the heat exchanger and the second port of the evaporator through a communicating pipeline 50, and the other end of the fine filter is communicated with the recharging booster pump through a communicating pipeline 50.

After the geothermal water in the geothermal well is pumped out by the deep well pump, the geothermal water is filtered by the cyclone filter and then enters the heat source pressurizing pump for pressurization, after the geothermal water is pressurized by the heat source pressurizing pump, the geothermal water is sent into the coarse filter for filtration and then sent into the heat exchanger for carrying out first-stage heat exchange with user backwater flowing into the heat exchanger through the two-network circulating pump, and/or the geothermal water continues to enter an evaporator in the water source heat pump unit and carries out second-stage heat exchange with an evaporator module of the water source heat pump unit. And the geothermal water after heat exchange enters a fine filter for secondary filtration, and enters a recharge pressure pump for pressurization and recharge after filtration.

In order to avoid the situation that the return water of the user side has impurities to cause the blockage of the circulation pipeline, the geothermal energy heat exchange station control system provided by the embodiment can further comprise a basket filter, wherein the basket filter is arranged between the user return water end and the two-net circulating pump, namely, one end of the basket filter is communicated with the user return water end, and the other end of the basket filter is communicated with the two-net circulating pump. So, can filter the user return water through basket filter, avoid the return water of user side to have impurity, cause the circulation pipeline to block up.

In order to facilitate the control of heat supply to the geothermal energy heat exchange station and realize step heat supply, as shown in fig. 4, the control system of the geothermal energy heat exchange station provided by the embodiment includes a first switch a1, a second switch b1, a first opening degree control switch a2, and a second opening degree control switch b 2. The first switch a1, the second switch b1, the first opening control switch a2 and the second opening control switch b2 are electrically connected to the control unit 10.

The first switch a1 is provided in the communication pipe 50 that communicates the fourth ports of the recharge pump module 23 and the heat exchange module 26.

The second switch b1 is provided in the communication duct 50 that communicates the fourth ports of the evaporation module and the heat exchange module 26.

The first opening degree control switch a2 is provided in the communication duct 50 that communicates the user water supply port with the second port of the heat exchange module 26.

The second opening degree control switch b2 is provided on the communication pipe 50 communicating the user water supply port with the second port of the condensation module.

The first switch and the second switch are used for controlling the connection and the disconnection of the communicating pipeline, and the first opening control switch and the second opening control switch are used for controlling the flow in the communicating pipeline.

In the present embodiment, the first switch a1, the second switch b1, the first opening degree control switch a2, and the second opening degree control switch b2 may be electric butterfly valve switches.

As shown in fig. 3, when the first-stage use is performed, the first switch a1 and the first opening degree control switch a2 are turned on, and the second switch b1 and the second opening degree control switch b2 are turned off. User backwater enters the two-network circulating pump through the basket filter, then enters the heat exchanger through the third port of the heat exchanger to exchange heat with geothermal water, because the second switch b1 and the second opening control switch b2 are closed, the first switch a1 and the first opening control switch a2 are opened, the user backwater after heat exchange enters the user water supply loop through the second port of the heat exchanger to supply water to the user side, and the geothermal water after heat exchange enters the fine effect filter through the fourth port of the heat exchanger to be filtered, and enters the recharge pressure pump after being filtered to be recharged under pressure.

In the two-stage use, the first switch a1 is closed, and the first opening control switch a2, the second switch b1, and the second opening control switch b2 are opened. The user's return water gets into two net circulating pumps through basket filter, and then partly third port through the heat exchanger gets into the heat exchanger and carries out the heat transfer with geothermal water, and another part gets into water source heat pump set through the first port of condenser, carries out the heat transfer with geothermal water. Because the first switch a1 is closed, the first opening control switch a2, the second switch b1 and the second opening control switch b2 are opened, and user backwater after heat exchange of the water source heat pump unit and user backwater after heat exchange of the heat exchanger are sent to a user water supply end together to supply heat for a user. And geothermal water after heat exchange through the heat exchanger enters an evaporator in the water source heat pump unit and carries out second-stage heat exchange with an evaporation side device module of the water source heat pump unit, and the geothermal water after heat exchange is cooled through the evaporator module, then enters a fine-effect filter through a second port of the evaporator, and then enters a recharging pressure pump for pressurizing and recharging.

The geothermal energy heat exchange station provided by the embodiment can control heat supply of the geothermal energy heat exchange station conveniently by arranging the first switch, the second switch, the first opening control switch and the second opening control switch, so that step heat supply is realized. When the operation of the geothermal energy heat exchange station is controlled according to the load demand value, the opening degrees of the first opening degree control switch and the second opening degree control switch can be controlled, the heat exchange quantity Q2 of the heat exchanger is ensured to be the maximum, and the heating quantity Q3 of the water source heat pump unit is adjusted according to the load demand value Q, so that the quantity Q of heat output to a user is Q2+ Q3, and the energy consumption is saved.

In view of the fact that in practical application, the user backwater is consumed in use, and in order to supplement the consumption of the user backwater in use, as shown in fig. 4, the geothermal energy heat exchange station control system provided by this embodiment further includes a water replenishing pump module 27, one end of the water replenishing pump module 27 is communicated with a water source through a communication pipe 50, and the other end is communicated with a user backwater port through the communication pipe 50.

The water replenishing pump module 27 includes a water replenishing pump and a control circuit corresponding to the water replenishing pump. The control circuit corresponding to the water replenishing pump is electrically connected with the control unit 10, and the control circuit corresponding to the water replenishing pump has the functions of frequency control, standby pump switching, fault alarm, manual and automatic control mode switching and the like.

One end of the water replenishing pump can be communicated with water sources such as tap water through a communicating pipeline 50, and the other end of the water replenishing pump is communicated with the water inlet end of the two-net circulating pump through the communicating pipeline 50. Therefore, the loss of the user backwater in use can be complemented by controlling the operation of the water replenishing pump.

In order to comprehensively acquire information of the geothermal energy heat exchange station in the operation process, in this embodiment, the parameter acquisition unit includes at least one pressure acquisition module, at least one temperature acquisition module and at least one flow acquisition module. The control unit is respectively and electrically connected with each pressure acquisition module, each temperature acquisition module and each flow acquisition module.

Each pressure acquisition module is arranged at different positions of the communication pipeline and used for acquiring liquid pressure at different positions.

Each temperature acquisition module is arranged at different positions of the communication pipeline and used for acquiring the liquid temperatures at different positions.

Each flow acquisition module is arranged at different positions of the communicating pipeline and used for acquiring liquid flow at different positions.

In this embodiment, a temperature collecting module may be disposed at the outlet of the deep well pump, the outlet of the coarse filter (i.e., the first port of the heat exchanger), the third port of the heat exchanger, the outlet of the recharging pressure pump, the outlet of the two-network circulating pump, the second port of the heat exchanger, the second port of the condenser, the second port of the evaporator, and the user water supply end, so as to collect the geothermal water temperature T1, the geothermal water temperature T2 entering the heat exchanger, the geothermal water temperature T3 after heat exchange, the geothermal water temperature T4 after recharging pressure pump, the temperature T5 of the water discharged from the two-network circulating pump, the temperature T6 of the user return water after heat exchange by the heat exchanger, the temperature T7 of the user return water after heat exchange by the water source heat pump, the temperature T8 of the geothermal water after heat exchange by the water source heat pump, and the temperature T9 of supplying water to the user.

In this embodiment, a pressure collecting module may be disposed at the outlet of the deep well pump, the inlet of the heat source pressure pump, the outlet of the coarse filter (i.e. the first port of the heat exchanger), the inlet of the fine filter, the outlet of the recharging pressure pump, the inlet of the basket filter, the inlet of the two-network circulating pump, the outlet of the two-network circulating pump, the second port of the condenser, the first port of the evaporator, and the water supply end of the user to collect geothermal water intake pressure P1, pressure P2 after filtration by the cyclone filter, pressure P3 after treatment by the heat source pressure pump, pressure P4 of geothermal water entering the heat exchanger, pressure P5 of geothermal water entering the fine filter after heat exchange, pressure P6 of liquid entering the recharging pressure pump, pressure P7 of liquid after treatment by the recharging pressure pump, pressure P8 of water returning by the user, pressure P8, The pressure P9 of the backwater entering the two-network circulating pump, the pressure P11 of the backwater of the user after heat exchange by the water source heat pump, the pressure P12 of the geothermal water entering the evaporator after heat exchange, and the pressure P13 of the water supply to the user.

In this embodiment, a flow rate collection module may be disposed at the outlet of the deep well pump and the outlet of the recharging pressure pump to collect the flow rate M1 of geothermal water and the flow rate M2 of geothermal water after recharging process.

In this embodiment, through set up temperature acquisition module, pressure acquisition module and flow acquisition module in the different positions department of circulation pipeline, can carry out comprehensive control to the operation of geothermal energy heat exchange station, when the temperature, pressure and the flow value in each position appear unusually, can in time discover, and report to the police.

In order to obtain the operation condition of each power pump, in this embodiment, the parameter collecting unit further includes an electric energy collecting module and a heat collecting module.

The electric energy acquisition module is respectively electrically connected with the power pump integrated unit and the control unit and is used for acquiring electric energy information of the power pump integrated unit and sending the electric energy information to the control unit.

In this embodiment, the electric energy collection module may be an electric energy collection meter for collecting electric energy information consumed by each power pump. Optionally, in this embodiment, a deep well pump electric energy collection meter Pe1, a heat source pressure pump electric energy collection meter Pe2, a recharging pressure pump electric energy collection meter Pe3, a two-network circulating pump electric energy collection meter Pe4, a water source heat pump host electric energy collection meter Pe5, and a water replenishing pump electric energy collection meter Pe6 may be provided to collect electric energy consumed by the deep well pump, electric energy consumed by the heat source pressure pump, electric energy consumed by the recharging pressure pump, electric energy consumed by the two-network circulating pump, electric energy consumed by the water source heat pump host, and electric energy consumed by the water replenishing pump.

In this embodiment, the heat collection module may be a heat collection meter for collecting heat information consumed by each power pump. Optionally, in this embodiment, the heat meter 1 may be disposed at a user water return end, the heat meter 2 may be disposed at a third port of the heat exchanger, and the heat meter 3 may be disposed at a first port of the condenser.

In the embodiment, heat meters are arranged at a user water return end, a third port of a heat exchanger and a first port of a condenser, so that heat generated by the geothermal energy heat exchange station in the running process can be obtained, and the deep well pump electric energy collection meter Pe1, the heat source pressure pump electric energy collection meter Pe2, the recharging pressure pump electric energy collection meter Pe3, the two-network circulating pump electric energy collection meter Pe4, the water source heat pump host electric energy collection meter Pe5 and the water supplementing pump electric energy collection meter Pe6 are arranged, so that electric energy of each power pump can be obtained in the running process of the geothermal energy heat exchange station, the running process of the geothermal energy heat exchange station is monitored, and when abnormal values of heat and electric energy occur, abnormal values can be found in time and alarm is given.

In order to realize statistics and management of energy consumption, the geothermal energy heat exchange station control system provided in this embodiment may further include an energy efficiency management module, in this embodiment, the energy efficiency management module may be an electronic device having a data statistics function, and the energy efficiency management module may be electrically connected to the electric energy collection meters of the power pumps, and is configured to perform statistics on electric energy information collected by the power pumps.

In view of the fact that in practical application, the geothermal heat exchange station is influenced by external conditions in the operation process, in order to improve the control accuracy of the geothermal heat exchange station when the geothermal heat exchange station is operated based on the load demand value, in this embodiment, the load demand value can be corrected based on the external conditions. Based on this, the load demand storage unit provided by this embodiment includes a temperature acquisition module, an illumination acquisition module, a wind speed acquisition module and a control module.

The control module is respectively and electrically connected with the temperature acquisition module, the illumination acquisition module, the wind speed acquisition module and the control unit.

The temperature acquisition module is used for acquiring outdoor temperature and transmitting the outdoor temperature to the control module.

The illumination collection module is used for collecting outdoor illumination and transmitting the outdoor illumination to the control module.

The wind speed acquisition module is used for acquiring outdoor wind speed and transmitting the outdoor wind speed to the control module.

The control module sends the outdoor temperature, the outdoor illumination, the outdoor wind speed and the pre-stored load requirement to the control unit.

The temperature acquisition module can be a temperature sensor, the illumination acquisition module can be an illumination sensor, and the wind speed acquisition module can be a wind speed sensor. The temperature sensor, the illumination sensor and the wind speed sensor can be arranged outdoors of the geothermal energy heat exchange station or arranged at an outdoor position where a user is located.

In this embodiment, the data may be collected once every T time, that is, every T time, the temperature sensor collects the outdoor temperature, the illumination sensor collects the outdoor illumination, and the wind speed sensor collects the outdoor wind speed. T can be set according to actual requirements, such as 2 hours, 3 hours and the like, and is not particularly limited, and generally takes a value of T being greater than or equal to 2 and less than or equal to 12.

The temperature sensor can send the outdoor temperature to the control module after acquiring the outdoor temperature; the illumination sensor can transmit outdoor illumination to the control module after collecting the outdoor illumination; after the wind speed sensor collects the outdoor wind speed, the outdoor wind speed can be sent to the control module.

In this embodiment, the control module may be an electronic device with a storage function, and is electrically connected or communicatively connected to the control unit, the control module stores the load demand value, and the control module receives the outdoor temperature, the outdoor illumination and the outdoor wind speed, and then sends the outdoor temperature, the outdoor illumination, the outdoor wind speed and the load demand value to the control unit.

After receiving the outdoor temperature, the outdoor illumination, the outdoor wind speed and the load demand value, the control unit adjusts the load demand value based on the outdoor temperature, the outdoor illumination and the outdoor wind speed.

Wherein the load demand values of the set temperature Tao, the set illumination II and the set wind speed V are set as Q. When the load demand value is adjusted according to the outdoor temperature, the outdoor illumination and the outdoor wind speed, the adjustment can be realized through the following formula:

q' ═ Q ((18-Tm)/(18-Tao))/((300-ii m)/(300-ii))/((20-V)/(20-Vm)). Wherein Tm outdoor temperature, pi m is outdoor illumination, Vm is outdoor wind speed, and Q' is the adjusted load demand value.

After the adjusted load demand value is obtained, each power pump in the power pump integrated unit can be controlled according to the adjusted load demand value and the collected medium parameters.

In order to facilitate the control of each power pump in the power pump integrated unit, the overall control of the geothermal energy heat exchange station and the cascade heat supply of the geothermal energy heat exchange station, in this embodiment, the process of controlling each power pump in the power pump integrated unit according to the adjusted load demand value and the acquired medium parameter can be realized in the following manner:

(1) and acquiring the maximum load value and the maximum heat value of the geothermal energy heat exchange station.

(2) And determining the operation mode of the geothermal energy heat exchange station according to the load demand value, the maximum load value and the maximum heat value.

(3) And controlling the power pump integrated unit according to the running mode, the load requirement value and the medium parameter.

The maximum load value Qmax of the geothermal energy heat exchange station is the product of a thermal load value per unit area and a heat supply area, for example, the heat load per unit area of a house adopting energy-saving measures is generally 40-45W/square meter, and the load demand value Qmax is the heat load per unit area (for example, 40W/square meter) and the area of a small area (for example, 10 ten thousand square meters) is 4000 KW. And Qmax also represents the maximum load value of geothermal energy under the conditions of the local winter minimum temperature Taomin, the minimum sunshine intensity II min, the maximum wind speed Vmax and the like.

In an alternative implementation, the required load demand value can be directly calculated based on the maximum load value, the outdoor temperature, the outdoor illumination and the outdoor wind speed, so that the load demand value does not need to be adjusted based on the outdoor temperature, the outdoor illumination and the outdoor wind speed, and the processing amount is reduced.

Specifically, it can be obtained by the following formula: q ═ Qmax ((18-Tm)/(18-Taomin)) + ((300- |/, /) min)) + ((20-Vmax)/(20-Vm)). Wherein, Tao outdoor temperature, II is outdoor illumination, V is outdoor wind speed, and Q is load demand value.

In this embodiment, the maximum amount of geothermal heat Q1 ═ C × M1 × Δ T, where M1 is the maximum flow rate of geothermal energy, the operation frequency of the deep-well pump at this time is the maximum frequency 50HZ, the output power is Pe1max, and the maximum flow rate of geothermal energy M1 is related to geological conditions of each place, such as 75M for the maximum flow rate of a single well in the yunity area of the Shandong province³H; c is the specific heat capacity of water 4.2kJ/(kg. ℃), and delta T is the maximum heat exchange temperature difference of the geothermal energy heat exchange station, the delta T is generally 20-50 ℃, and the larger the heat taking temperature T1 of the geothermal well is, the larger the temperature difference delta T is.

Considering the investment economic rationality and the operation economic rationality, the maximum heating value Q1 of the geothermal energy heat exchange station is B Qmax, wherein B is [ 40%, 70% ].

After the maximum load value and the maximum heat value of the geothermal energy heat exchange station are obtained, the operation mode of the geothermal energy heat exchange station can be determined according to the load demand value, the maximum load value and the maximum heat value.

In this embodiment, the load demand value is compared with the maximum load value and the maximum heat value, and if the load demand value is smaller than the maximum heat value, the operation mode of the geothermal energy heat exchange station is the first operation mode. And if the load requirement value is greater than or equal to the maximum heat taking value and less than the maximum heat taking value of the preset multiple, the operation mode of the geothermal energy heat exchange station is the second operation mode. And if the load demand value is greater than or equal to the maximum heat value of the preset multiple and is less than or equal to the maximum load value, the operation mode of the geothermal energy heat exchange station is the second operation mode.

And when the load requirement value Q is less than the maximum heat value Q1, namely Q is less than Q1, the first operation mode is operated. And when the load demand value Q is greater than or equal to the maximum heating value Q1 and less than the preset multiple of the maximum heating value, i.e., Q ═ Q1, a ═ Q1, a ═ 1, 1.2, the second operation mode is operated. When the load demand value Q is equal to or greater than the maximum heating value a × Q1, which is a preset multiple, and equal to or less than the maximum load value Qmax, that is, Q is (a × Q1, Qmax), the third operation mode is operated.

And after the operation mode of the geothermal energy heat exchange station is determined, controlling the power pump in the power pump integrated unit according to the operation mode, the load requirement value and the medium parameter.

In this embodiment, the medium parameters include a liquid pressure value at the water inlet of the two-network circulating pump module, a liquid pressure value at the water outlet of the heat source pressure pump module, a liquid pressure value at the fourth port of the heat exchange module, and a liquid flow value at the water outlet of the recharging pressure pump module.

And when the operation mode is the first operation mode, closing the water source heat pump unit module, opening the first switch and the first opening control switch, closing the second switch and the second opening control switch, and adjusting the operation frequency of the deep well pump module and the two-network circulating pump module according to the load requirement value. And controlling the running frequency of the water replenishing pump module according to the liquid pressure value at the water inlet of the two-network circulating pump module. And controlling the operating frequency of the heat source pressurizing pump module according to the liquid pressure value at the water outlet of the heat source pressurizing pump module and the liquid pressure value at the fourth port of the heat exchange module. And controlling the running frequency of the recharge pressure pump module according to the liquid flow value at the water outlet of the recharge pressure pump module.

When the water source heat pump unit is operated in the first operation mode, the water source heat pump unit is not started, namely the condenser and the evaporator are not operated, the first switch a1 and the first opening control switch a2 are started, and the second switch b1 and the second opening control switch b2 are closed. Adjusting the operating frequency of the deep well pump module according to the load demand value can be accomplished by the formula F_{Deep well pump}Obtained as (Q/Q1) × 50HZ, Q being the load demand value and Q1 being the maximum heating value. At this time, compared with the conventional power frequency operation system, the reduced power consumption is Pe1 ═ Q/Q1)3 × (Pe1 max), because of Q<Q1, when Q is 0.8Q1, Pe1 is 0.512Pe1max, and Pe1max is the maximum power consumption, therefore, the operating frequency of the deep-well pump module is adjusted according to the load demand value, and the power consumption is obviously reduced.

When the operation frequency of the two-network circulating pump module is adjusted according to the load demand value, the target flow of the two-network circulating pump is calculated according to the load demand value, and thenAnd then adjusting the operating frequency of the two-network circulating pump module according to the calculated target flow of the two-network circulating pump. Wherein, the target flow M of the two-network circulating pump_{Two nets}Q/(C × Δ T1), Q is the load demand value, Δ T1 is the two-network heat exchange temperature difference, and Δ T1 is [5, 10 ] when the connected user end is the ground heating]When the connected user end is a heat sink, Δ T1 ═ 10, 15]C is the specific heat capacity of water 4.2kJ/(kg. ℃); according to the calculated target flow M of the two-network circulating pump_{Two nets}When the operation frequency of the two-network circulating pump module is adjusted, when the operation frequency of the first two-network circulating pump reaches 35HZ, the second two-network circulating pump is started, and when the operation frequency of the second two-network circulating pump also reaches 35HZ, the subsequent operation frequency is increased by 1HZ step by step according to the increase of 2 pumps until the target flow of the two-network circulating pumps reaches M_{Two nets}The adjustment of the operating frequency is stopped. The operation frequency of the two-network circulating pump module is adjusted according to the load demand value, and the power consumption is obviously reduced.

At the liquid pressure value P9 according to two net circulating pump module water inlets department, when the operating frequency of control moisturizing pump module, can carry out the return difference control according to pressure value P9, when P9 is less than first preset pressure threshold value, if when 0.2Mpa, moisturizing is opened to first moisturizing pump, after opening the first moisturizing pump in the moisturizing pump module, if the operating frequency of first moisturizing pump reaches the frequency threshold value of settlement, if 50HZ, and the liquid pressure value P9 of two net circulating pump module water inlets department is less than first preset pressure threshold value, open the second moisturizing pump in the moisturizing pump module and carry out the moisturizing. When the liquid pressure value of the water inlet of the two-network circulating pump module is larger than a second preset pressure threshold value, if 0.3Mpa, the first water replenishing pump and the second water replenishing pump are controlled to stop replenishing water, and the first water replenishing pump and the second water replenishing pump are controlled to stop running.

When the operation frequency of the heat source pressurizing pump module is controlled according to the liquid pressure value P3 at the water outlet of the heat source pressurizing pump module and the liquid pressure value P5 at the fourth port of the heat exchange module, the operation is controlled according to the pressure difference value between P3 and P5, when the pressure difference value delta P is [0.05, 0.08], the heat source pressurizing pump is started and is kept at the frequency of 30HZ, when the delta P is greater than 0.08MPa, the operation frequency of the heat source pressurizing pump is increased to 50Hz, and when the delta P is less than 0.05MPa, the operation of the heat source pressurizing pump is stopped. The operating frequency of the heat source pressurizing pump is controlled through the pressure difference, and the power consumption is obviously reduced.

When the operation frequency of the recharging pressure pump module is controlled according to the liquid flow value M2 at the water outlet of the recharging pressure pump module, when the flow value M2 is smaller than a first preset flow threshold value, such as 0.8M 1, the recharging pressure pump is started, the recharging pressure pump frequency is increased according to the reduction of the recharging flow, when the flow value M2 is larger than or equal to the first preset flow threshold value and smaller than or equal to a second preset flow threshold value, such as M2 [ 0.8M 1, 0.9M 1], the recharging pressure pump frequency is unchanged, when the flow value M2 is larger than a second preset flow threshold value, such as 0.9M 1, the recharging pressure pump reduces the operation frequency, and the recharging pressure pump operates according to the recharging flow adjustment frequency, so that the power consumption is obviously reduced.

In a first operation mode, the output heat quantity Qm of the geothermal energy heat exchange station is Q, the power consumption of a deep well pump is Pe1, the power consumption of a heat source pressure pump is Pe2, the power consumption of a recharge pressure pump is Pe3, the power consumption of a two-network circulating pump is Pe4, and the power consumption of a water replenishing pump is Pe6, wherein the integral energy efficiency COP of the energy efficiency management module output system is Qm/(Pe1+ Pe2+ Pe3+ Pe4+ Pe 6).

In this embodiment, when the operation mode is the second operation mode, the water source heat pump unit module is turned off, the first switch and the first opening control switch are turned on, and the second switch and the second opening control switch are turned off. And adjusting the operating frequency of the deep-well pump module and the two-network circulating pump module to a preset frequency. And controlling the running frequency of the water replenishing pump module according to the liquid pressure value at the water inlet of the two-network circulating pump module. And controlling the operating frequency of the heat source pressurizing pump module according to the liquid pressure value at the water outlet of the heat source pressurizing pump module and the liquid pressure value at the fourth port of the heat exchange module. And controlling the operating frequency of the recharging pressure pump module according to the liquid flow value at the water outlet of the recharging pressure pump module.

When the water source heat pump unit is operated in the second operation mode, the water source heat pump unit is not started, namely the condenser and the evaporator are not operated, the first switch a1 and the first opening control switch a2 are started, and the second switch b1 and the second opening control switch b2 are closed. And (4) enabling the operation frequency of the deep-well pump and the two-network circulating pump to reach a preset frequency, such as 50 HZ. Under the second operation mode, the number of the two-network circulating pump is 2, so that the maximum heat exchange of geothermal energy can be ensured, the two-network conveying temperature difference is reduced, the tail end heat exchange effect is improved, and the requirement on heat supply temperature is met under the condition that a water source heat pump host is not started.

According to the liquid pressure value P9 of the water inlet of the two-network circulating pump module, when the operating frequency of the water replenishing pump module is controlled, return difference control can be performed according to a pressure value P9, whether the liquid pressure value of the water inlet of the two-network circulating pump module is smaller than a first preset pressure threshold value or not is detected, when the pressure value P9 is smaller than the first preset pressure threshold value, such as 0.2Mpa, the water replenishing is started by a first water replenishing pump, after the first water replenishing pump in the water replenishing pump module is started, if the operating frequency of the first water replenishing pump reaches a set frequency threshold value, such as 50HZ, the liquid pressure value P9 of the water inlet of the two-network circulating pump module is smaller than the first preset pressure threshold value, and a second water replenishing pump in the water replenishing pump module is started to replenish water.

When the liquid pressure value of the water inlet of the two-network circulating pump module is greater than a second preset pressure threshold value, such as 0.3Mpa, the first water replenishing pump and the second water replenishing pump are controlled to stop replenishing water, and the first water replenishing pump and the second water replenishing pump are controlled to stop running.

When the operation frequency of the heat source pressurizing pump module is controlled according to the liquid pressure value P3 at the water outlet of the heat source pressurizing pump module and the liquid pressure value P5 at the fourth port of the heat exchange module, the operation is controlled according to the pressure difference value between P3 and P5, when the pressure difference value delta P is [0.05, 0.08], the heat source pressurizing pump is started and the frequency is unchanged at 30HZ, when the delta P is greater than 0.08MPa, the operation frequency of the heat source pressurizing pump is increased to 50Hz, and when the delta P is less than 0.05MPa, the operation of the heat source pressurizing pump is stopped. The operating frequency of the heat source pressurizing pump is controlled through the pressure difference, and the power consumption is obviously reduced. When the operation frequency of the recharging pressure pump module is controlled according to the liquid flow value M2 at the water outlet of the recharging pressure pump module, when the flow value M2 is smaller than a first preset flow threshold value, such as 0.8M 1, the recharging pressure pump is started, the recharging pressure pump frequency is increased according to the reduction of the recharging flow, when the flow value M2 is larger than or equal to the first preset flow threshold value and smaller than or equal to a second preset flow threshold value, such as M2 [ 0.8M 1, 0.9M 1], the recharging pressure pump frequency is unchanged, when the flow value M2 is larger than a second preset flow threshold value, such as 0.9M 1, the recharging pressure pump reduces the operation frequency, and the recharging pressure pump operates according to the recharging flow adjustment frequency, so that the power consumption is obviously reduced.

In the second operation mode, the output heat quantity Qm of the geothermal energy heat exchange station is Q, the power consumption of the deep-well pump is Pe1_maxThe power consumption of the heat source pressure pump is Pe2, the power consumption of the recharging pressure pump is Pe3, and the power consumption of the two-network circulating pump is Pe4_maxAnd the power consumption of the water replenishing pump Pe6, and at the moment, the energy efficiency management module outputs the whole energy efficiency COP (coefficient of performance) of the system as Q/(Pe 1)_max+Pe2+ Pe3+Pe4_max+Pe6)。

And when the operation mode is a third operation mode, the water source heat pump unit module is started, the first switch is closed, the first opening control switch, the second switch and the second opening control switch are started, the operation frequency of the deep well pump module is adjusted to be a preset frequency, and the operation frequency of the two-network circulating pump module is adjusted according to the load requirement value. And controlling the running frequency of the water replenishing pump module according to the liquid pressure value at the water inlet of the two-network circulating pump module. And controlling the operating frequency of the heat source pressurizing pump module according to the liquid pressure value at the water outlet of the heat source pressurizing pump module and the liquid pressure value at the fourth port of the heat exchange module. And controlling the operating frequency of the recharging pressure pump module according to the liquid flow value at the water outlet of the recharging pressure pump module.

When the third operation mode is operated, the water source heat pump unit is started, namely the condenser and the evaporator are operated, the first switch a1 is closed, the first opening control switch a2 is opened, and the second switch b1 and the second opening control switch b2 are closed. In the third operation mode, the heat exchange amount of the heat exchanger is Q2, the heat of the water source heat pump unit is Q3 ═ Q-Q2, and the heat exchange amount Q of the evaporator of the water source heat pump unit_{Evaporator with a heat exchanger}Therefore, the maximum heat exchange quantity Q2 of the heat exchanger can be ensured by adjusting the opening degrees of a2 and b2, and the heating quantity Q3 of the water source heat pump unit is adjusted according to the load requirement value, so that the output heat quantity Q2+ Q3 is realized, and the heating temperature requirement is met.

In a third operating mode, the operation frequency of the deep-well pump is adjustedTo a predetermined frequency, such as 50 HZ. In the third operation mode, when the operation frequency of the two-network circulating pump module is adjusted according to the load demand value, the target flow of the two-network circulating pump is obtained by calculation according to the load demand value, and then the operation frequency of the two-network circulating pump module is adjusted according to the target flow of the two-network circulating pump obtained by calculation. Wherein, the target flow M of the two-network circulating pump_{Two nets}Q/(C × Δ T1), Q is the load demand value, Δ T1 is the two-network heat exchange temperature difference, and Δ T1 is [5, 10 ] when the connected user end is the ground heating]When the connected user terminal is a heat sink, Δ T1 ═ 10, 15]C is the specific heat capacity of water 4.2kJ/(kg. ℃); according to the calculated target flow M of the two-network circulating pump_{Two nets}When the operation frequency of the two-network circulating pump module is adjusted, when the operation frequency of the first two-network circulating pump reaches 35HZ, the second two-network circulating pump is started, and when the operation frequency of the second two-network circulating pump also reaches 35HZ, the subsequent operation frequency is increased by 1HZ step by step according to the increase of 2 pumps until the target flow of the two-network circulating pumps reaches M_{Two nets}The adjustment of the operating frequency is stopped. The embodiment adjusts the operation frequency of the two-network circulating pump module according to the load demand value, and obviously reduces the power consumption.

At the liquid pressure value P9 according to two net circulating pump module water inlets department, when the operating frequency of control moisturizing pump module, can carry out the return difference control according to pressure value P9, when P9 is less than first preset pressure threshold value, if when 0.2Mpa, moisturizing is opened to first moisturizing pump, after opening the first moisturizing pump in the moisturizing pump module, if the operating frequency of first moisturizing pump reaches the frequency threshold value of settlement, if 50HZ, and the liquid pressure value P9 of two net circulating pump module water inlets department is less than first preset pressure threshold value, open the second moisturizing pump in the moisturizing pump module and carry out the moisturizing.

When the liquid pressure value of the water inlet of the two-network circulating pump module is greater than a second preset pressure threshold value, if 0.3Mpa, the first water replenishing pump and the second water replenishing pump are controlled to stop replenishing water, and the first water replenishing pump and the second water replenishing pump are controlled to stop running.

In the third operation mode, the output heat quantity Qm of the geothermal energy heat exchange station is Q2+ Q3 is Q, and the power consumption of the deep well pump is Pe1_maxThe power consumption of the heat source pressure pump is Pe2, the power consumption of the recharge pressure pump is Pe3, the power consumption of the two-network circulating pump is Pe4, the power consumption of the water source heat pump unit is Pe5, and the power consumption of the water replenishing pump is Pe6, at the moment, the integral energy efficiency COP of the energy efficiency management module output system is Q/(Pe 1)_max+Pe2+Pe3+Pe4+Pe5+Pe6)。

The geothermal energy heat exchange station control system provided by this embodiment issues control instructions to the deep-well pump module, the heat source pressure pump module, the water source heat pump unit module, the recharge pressure pump module, the water replenishing pump module, the two-network circulating pump module, the switch module and other modules through the control unit according to different load requirements, so as to achieve overall operation control, energy saving and consumption reduction operation, and the energy efficiency management set module outputs the overall energy efficiency COP of the system.

In summary, the geothermal energy heat exchange station control system provided by the embodiment of the application comprises a control unit, a power pump integration unit, a parameter acquisition unit, a load demand storage unit and a communication pipeline; the control unit is respectively electrically connected with the power pump integration unit, the parameter acquisition unit and the demand storage unit, the power pump integration unit is communicated with the communicating pipeline, the parameter acquisition unit is arranged on the communicating pipeline and is used for acquiring medium parameters in the communicating pipeline and sending the medium parameters to the control unit, the demand storage unit stores a load demand value, the demand storage unit is used for sending the load demand value to the control unit, and the control unit is used for controlling the power pump integration unit according to the load demand value and the medium parameters. Therefore, the control unit can realize the integral operation of the geothermal energy heat exchange station according to the load demand value and the medium parameter, and saves the operation energy consumption.

The geothermal energy heat exchange station control system provided by the embodiment of the present application is described in detail above, and the principle and the embodiment of the present application are explained by applying specific examples herein, and the description of the above embodiment is only used to help understand the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. The geothermal energy heat exchange station control system is characterized by comprising a control unit, a power pump integration unit, a parameter acquisition unit, a load demand storage unit and a communication pipeline; the control unit is respectively and electrically connected with the power pump integration unit, the parameter acquisition unit and the demand storage unit; the power pump integrated unit is communicated with the communicating pipeline;

2. The geothermal energy heat exchange station control system of claim 1, wherein the power pump integrated unit comprises a deep well pump module, a heat source pressure pump module, a recharge pressure pump module, a water source heat pump unit module, a two-network circulating pump module, and a heat exchange module;

3. The geothermal energy heat exchange station control system according to claim 2, wherein the water source heat pump unit module comprises a condensation module and an evaporation module;

4. The geothermal energy heat-exchange station control system according to claim 3, wherein the geothermal energy heat-exchange station control system comprises a cyclone filter, a coarse filter and a fine filter;

5. The geothermal energy heat exchange station control system according to claim 3, wherein the geothermal energy heat exchange station control system comprises a basket filter, one end of the basket filter is communicated with a user return water end through the communication pipeline, and the other end of the basket filter is communicated with the two-net circulating pump module through the communication pipeline.

6. A geothermal energy heat exchange station control system according to claim 3, comprising a first switch, a second switch, a first opening control switch and a second opening control switch; the first switch, the second switch, the first opening control switch and the second opening control switch are respectively electrically connected with the control unit;

7. The geothermal energy heat exchange station control system according to claim 1, wherein the power pump integrated unit further comprises a water replenishing pump module, one end of the water replenishing pump module is communicated with a water source through the communication pipeline, and the other end of the water replenishing pump module is communicated with a user water return port through the communication pipeline.

8. The geothermal energy heat exchange station control system according to claim 1, wherein the parameter acquisition unit comprises at least one pressure acquisition module, at least one temperature acquisition module, and at least one flow acquisition module; the control unit is electrically connected with each pressure acquisition module, each temperature acquisition module and each flow acquisition module respectively;

and the flow acquisition modules are arranged at different positions of the communication pipeline and used for acquiring liquid flow at different positions.

9. The geothermal energy heat-exchange station control system according to claim 1, wherein the parameter acquisition unit further comprises an electric energy acquisition module and a heat acquisition module;

10. The geothermal energy heat exchange station control system according to claim 1, wherein the load demand storage unit comprises a temperature acquisition module, a light acquisition module, a wind speed acquisition module and a control module;