CN107143904A - Continuous water supply formula room heat supply temperature control and heat metering device and method - Google Patents

Abstract

The invention provides a continuous water supply type room heating temperature control and heat metering device and method, wherein the device includes: a water flow conversion system, which is used to release the heat carried by the hot water source to the indoor space of a single-family room to realize user Heating; a temperature control metering system, which is used to obtain heat consumption parameters and working state parameters based on the operating parameters of the water flow conversion system during the user's heating process; and a monitoring terminal, which is used to receive the data transmitted by the water flow conversion system data, and a request to send the read data to the flow conversion system. The heat supply temperature control heat metering device of the present invention can realize effective control and high-precision metering of the heat consumption in the indoor space of a single-family room.

Description

Continuous water supply type room heating temperature control and heat metering device and method

technical field

The invention relates to the field of heat metering for building heating, in particular to a continuous water supply type room heating temperature control and heat metering device and method.

Background technique

At present, the heat metering method adopted in the field of building heating is the most widely used on-off time area method. The basis of household heat metering in the on-off time area method is that the indoor temperature must meet the standard and the hot water flow must be accurately measured. However, the existing heat metering methods are usually based on buildings or single-family rooms (such as the heat meter method). Due to the different directions of each room in the building and the large difference in heat dissipation between single-family rooms, it is difficult for the existing heat metering methods to ensure that each heating space in a single house can be properly heated while measuring heat. Meet the indoor temperature required by the specification, for example, it often happens that the indoor temperature does not meet or exceed the specification requirement. In other words, in the field of building heating at present, there are generally defects such as large error in household heat metering and difficulty in household temperature control, which will directly affect the heating experience of users.

In addition, there are many types of meters used for heat measurement in the field of building heating at present, and the complexity of the meter structure is uncertain, and the meters generally have the disadvantages of low measurement accuracy, easy damage to equipment, high cost, and poor applicability. Most of the actual heating charging methods for single households still stay in the way of sharing charges according to the building area of the room, that is, it is difficult to achieve fair charging according to the current meter and heat metering methods.

Contents of the invention

technical problem

In view of this, the present invention provides a continuous water supply type room heating temperature control and heat metering device and method, aiming at recovering the pressure energy of the hot water source and realizing high-precision metering of the heat consumption of a single-family heating room .

Technical solutions

In order to solve the above technical problems, the present invention provides a continuous water supply type room heating temperature control and heat metering device, which includes:

Water flow conversion system, which is used to release the heat carried by the hot water source to the indoor space of a single-family room to achieve user heating;

A temperature control metering system, which is used to obtain heat consumption parameters and working state parameters based on the operating parameters of the water flow conversion system during the user's heating process; and

The monitoring terminal is used for receiving the data transmitted by the water flow conversion system, and for sending a request for reading data to the water flow conversion system.

For the above continuous water supply type room heating temperature control and heat metering device, in a possible implementation manner, the temperature control metering system includes a controller, a water supply valve, a sensor group, a speed control module and a communication unit,

Wherein, the sensor group is used to collect the operating parameters of the water flow conversion system;

Wherein, the controller is used for:

Obtaining the working state parameters according to the operating parameters collected by the sensor group, and controlling the open/close state of the water supply valve according to the state working parameters; and

The calorie consumption parameter is obtained according to the operating parameters collected by the sensor group, and all or a part of the operating parameter, the calorie consumption parameter and the working state parameter are transmitted to the monitoring unit through the communication unit end.

For the above-mentioned continuous water supply type room heating temperature control and heat metering device, in a possible implementation manner, the water flow conversion system mainly includes a screw expander, a generator and a radiator, and the screw expander The water outlet is connected to the water supply branch pipe connected to the hot water source, the water outlet of the screw expander is connected to the first end of the radiator, and the second end of the radiator is connected to the return water branch pipe connected to the hot water source, so The above-mentioned screw expander is also connected with the generator through a coupling.

For the above-mentioned continuous water supply type room heating temperature control and heat metering device, in a possible implementation manner, the generator is also connected to a battery through a rectifier, and the battery is connected to the controller and the communication unit through a power cable.

For the above-mentioned continuous water supply type room heating temperature control and heat metering device, in a possible implementation manner, the generator is a non-excitation generator, and the speed control module is capable of directly or indirectly adjusting the screw The speed brake of the type expander.

For the above-mentioned continuous water supply type room heating temperature control and heat metering device, in a possible implementation manner, the generator is an excitation generator, the speed control module is an excitation module, and the controller passes the excitation The module adjusts the rotation speed of the excitation generator, and then indirectly adjusts the rotation speed of the screw expander.

For the above continuous water supply type room heating temperature control and heat metering device, in a possible implementation manner, the sensor group includes a first temperature sensor, a rotational speed sensor, a second temperature sensor and a third temperature sensor,

Wherein, both the water supply valve and the first temperature sensor are arranged upstream of the water inlet of the screw expander, and the rotational speed sensor is arranged at the position, the second temperature sensor is set in the indoor space of the single-family room, and the third temperature sensor is set in the return water branch downstream of the radiator.

For the above continuous water supply type room heating temperature control and heat metering device, in a possible implementation manner, the second temperature sensor is set in the indoor space not close to the radiator and the window of the single-family room.

In order to solve the above technical problems, another aspect of the present invention also provides a continuous water supply type room heating temperature control and heat metering method, the method includes the following steps:

S100. The temperature control metering system obtains working state parameters based on the operating parameters of the water flow conversion system, and further judges whether there is a fault in the temperature control and heat metering device according to the working state parameters, and

In the case of failure of the temperature control and heat metering device, the water supply valve is closed, and the information of the failure of the temperature control and heat metering device is transmitted to the monitoring terminal;

S200. The temperature control metering system obtains a heat consumption parameter based on the operating parameters of the water flow conversion system, and transmits all or a part of the operating parameter and the heat consumption parameter to the monitoring terminal;

Wherein, the operating parameters of the water flow conversion system include the temperature of the heat transfer medium upstream of the water inlet of the screw expander, the temperature of the indoor space of the single-family room, the speed of the screw expander, and the temperature of the heat transfer medium downstream of the radiator .

For the above continuous water supply type room heating temperature control and heat metering method, in a possible implementation manner, the heat consumption parameter is the cumulative water flow V _i accumulated in the i-th temperature segment, and the cumulative water flow V _i is determined by The following formula (1) calculates:

V _i ＝2m _s v _s (1+m)n _i (1)

In the above formula (1), n _i is the number of rotations of the screw expander accumulated in the temperature section i, m _s is the number of screw channels of the screw expander, v _s is the volume of a single screw channel, m is the leakage percentage,

Wherein, the number i of temperature segments and the temperature range corresponding to each temperature segment are pre-divided by the controller based on the indoor temperature of the single-family room.

Beneficial effect

The continuous water supply type room heating temperature control and heat metering device and method of the present invention use the screw groove of the screw expander (hereinafter referred to as the expander) to transport water at a constant volume and the principle of water expansion and work in the expander to accurately adjust the water flow rate. Converted to the rotation of the expander to achieve high-precision metering of water supply, to achieve accurate and low-fluctuation temperature in each room, or uniform temperature control and metering of rooms with the same orientation and area in each building, and at the same time convert the pressure energy of water supply into mechanical energy , to provide electric energy for the device itself, which can not only meet the needs of high-precision heating measurement and stable indoor temperature, reduce the economic losses of both building heating sellers and users, but also use its own pressure to supply power for the device itself, and can realize flow data and device Remote transmission and monitoring of operating status and device operation independent of the user.

In addition, the heat metering device of the present invention has simple and compact structure, high measurement accuracy, low noise, convenient use, and low manufacturing cost, and can be used in large, medium and small liquid metering places, especially suitable for small and medium-sized high-precision heat metering places .

Other features and aspects of the present invention will become apparent from the following detailed description of exemplary embodiments with reference to the accompanying drawings.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the invention and together with the description, serve to explain the principles of the invention. The present invention may be more fully and better understood when considered in conjunction with the accompanying drawings. The drawings described here are used to provide a further understanding of the present invention, and the embodiments and their descriptions are used to explain the present invention, and do not constitute improper limitations to the present invention.

Fig. 1 shows the structural representation 1 (ordinary generator) of the continuous water supply type room heating temperature control and heat metering device of an embodiment of the present invention;

Fig. 2 shows the structural representation 2 (excitation generator) of the continuous water supply type room heating temperature control and heat metering device of another embodiment of the present invention;

Fig. 3 shows a schematic diagram of the overall structure of the continuous water supply room heating temperature control and heat metering device of the present invention when it is used for heating a whole building.

List of reference signs:

10. Controller; 11. Water supply valve; 12. First temperature sensor; 13. Speed sensor; 14. Brake; 15. Second temperature sensor; 16. Communication unit; 20. Expander; 21. Radiator; 22. Water supply sub-valve; 23, generator; 25, the third temperature sensor.

detailed description

Various exemplary embodiments, features, and aspects of the invention will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.

It should be noted that, in the description of the present invention, unless otherwise clearly stipulated and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In addition, in order to better illustrate the present invention, numerous specific details are given in the specific embodiments below. It will be understood by those skilled in the art that the present invention may be practiced without certain of the specific details. In some instances, methods, means, components and circuits well known to those skilled in the art have not been described in detail in order to highlight the gist of the present invention.

Example 1

Fig. 1 shows a continuous water supply type room heating temperature control and heat metering device of the first embodiment of the present invention. As shown in Figure 1, the device mainly includes a water flow conversion system and a temperature control metering system. The water flow conversion system is mainly used to release the heat carried by the water in the water supply branch pipe to the indoor environment through the radiator, that is, the indoor space of a single-family room to achieve user heating, while the temperature control metering system is mainly used in the process of user heating. In this process, the relevant operating parameters are collected, based on the obtained operating parameters, the parameters related to the heat consumption of the indoor space of a single-family room (heat consumption parameters) and the parameters representing the working state (working state parameters) are calculated, and all or all of the parameters are calculated. Part of it is sent to the monitoring terminal. Obviously, this embodiment is described with water as the heat transfer medium. Of course, water can be replaced by other heat transfer media according to the actual situation, such as adding other additives to the water, or replacing it with other materials with equivalent or better properties. Highly effective liquid substance.

Continuing to refer to Fig. 1, the water flow conversion system mainly includes an expander 20 as a screw mechanism, a generator 23 and a radiator 21, and the water inlet of the expander 20 is connected to a hot water source (obviously, the hot water source should be able to continuously provide temperature for the water supply pipe. Standard hot water), the water outlet of the expander 20 is connected to the upstream end of the radiator 21, the downstream end of the radiator 21 is connected to the return water branch pipe, and the expander 20 is also connected to the generator 23 through a coupling connect. The hot water source enters the expander 20 through the water supply branch pipe to drive the expander 20 to rotate, thereby converting the pressure energy of the hot water source into mechanical energy; the expander 20 drives the generator 23 to rotate and generate electrical energy, and then converts the mechanical energy into electrical energy.

Still referring to Fig. 1, the temperature control metering system mainly includes a controller 10, a water supply valve 11, a sensor group, a brake 14 and a communication unit 16, wherein the sensor group includes a first temperature sensor 12, a rotational speed sensor 13, a second temperature sensor 15 and The third temperature sensor 25 . Wherein, the water supply valve 11 is arranged between the water supply branch pipe and the expander 20, the first temperature sensor 12 is arranged between the water supply valve 11 and the expander 20, the speed sensor 13 and the brake 14 are both arranged on the output shaft of the expander 20, The second temperature sensor 15 is arranged in the indoor space of a single-family room, and the specific installation position in the indoor space should be far away from the radiator 21 and the windows of the room, so that the temperature measured by the second temperature sensor 15 can reflect more accurately The general true temperature of the indoor space, the third temperature sensor 25 is set in the return water branch downstream of the radiator, and is used to detect the water temperature after heating.

As a preference, the power output end of the generator 23 is connected to the controller 10 through a power cable, so as to provide power for the controller 10 . The controller 10 further supplies power to components such as the water supply valve 11 , the first temperature sensor 12 , the rotation speed sensor 13 , the brake 14 , the second temperature sensor 15 , the communication unit 16 and the third temperature sensor 25 . Taking the power supply mode of the controller and the above-mentioned components as an example, if the controller 10 is equipped with a battery or a battery is arranged between the generator and the controller, the electric energy (alternating current) generated by the generator 23 is stored after being rectified by the rectifier. To the storage battery, the storage battery further implements the power supply to the controller and the aforementioned components.

As a preference, the expander 20 is a single-screw expander, the generator 23 is an ordinary generator (non-excitation generator), and the (first, second, and third) temperature sensors are all thermocouples or thermistors. The thermistor of the sensitive resistor is preferably a platinum resistor, the water supply valve 11 selects a solenoid valve, and the speed sensor 13 selects a non-contact sensor (such as the speed sensor 13 is installed on a relatively fixed support (such as being fixed on the generator or expander housing) bracket), and the rotation speed sensor 13 is vertically aligned to a position capable of detecting the rotation speed of the expander), and the brake 14 is an electronic brake.

The hot water flowing out of the water supply branch pipe passes through the water supply valve 11, the expander 20 and the radiator 21 in turn, and then returns to the return water branch pipe. For example, the water in the return water pipe is preferably still collected as a water source, and after heating, it still enters the water supply branch pipe. That is to say, a water cycle of heating-exothermic-cooling-reheating is formed. The (first and third) temperature sensors are respectively used to detect the temperature of the water in the water circuit entering the indoor space (front and back) of the single-family room, and the second temperature sensor 15 is used to detect the temperature of the indoor space of the single-family room . The expander 20 rotates under the impact of the pressure energy of the water flow, and then drives the generator 23 to rotate to generate electric energy. As mentioned above, the generated electric energy can realize the electric power supply to the temperature control metering system itself. In addition, it can also provide electrical energy for nearby lighting, heating, etc., and then send the excess electrical energy to the grid. The setting of the generator recovers the pressure energy in the water flow and improves the energy utilization rate. Moreover, such a power distribution scheme omits the power distribution facilities of the device and the application scene where the device is located, reduces the energy consumption due to power transmission, and improves the utilization rate of power energy on the basis of optimizing pressure energy recovery.

The controller 10 detects the status of the water supply valve 11 and the brake 14 in real time or periodically at regular intervals, and receives and stores the data collected and transmitted by the first temperature sensor 12, the second temperature sensor 15, the third temperature sensor 25 and the rotational speed sensor 13. temperature and speed signals. According to the temperature of the indoor space detected by the second temperature sensor 15, the water flow into the expander 20 is controlled according to the following method:

11) When the temperature of the indoor space detected by the second temperature sensor 15 is lower than the indoor temperature level set by the controller 10, the controller 10 sends a signal to the brake 14 to reduce the braking force, and the speed of the generator 23 increases in a certain way. High, if the rotation speed of the generator 23 increases slowly and then drives the rotation speed of the expander 20 to also increase slowly, the purpose of slowly increasing the water flow into the expander 20 can be achieved;

12) When the temperature of the indoor space detected by the second temperature sensor 15 is greater than or equal to the indoor temperature level set by the controller 10, the controller 10 sends a signal to the brake 14 to increase the braking force, and the rotation speed of the generator 23 is adjusted in a certain way. For example, the speed of the generator 23 is slowly reduced and the expansion machine 20 is also slowly reduced, so that the water flow into the expansion machine 20 can be slowly reduced;

Repeat the above steps 1) and 2) until the temperature of the indoor space detected by the second temperature sensor 15 is equal to the indoor temperature level set by the controller 10, the controller 10 will not send a signal to the brake 14 to change the braking force, even if the brake 14 Keep the current braking force unchanged.

During the process of the controller adjusting the temperature of the indoor space by changing the braking force of the brake 14, for each temperature segment i obtained by the controller based on the indoor temperature division of the single-family room corresponding to the second temperature sensor 15 installed, Each temperature segment i corresponds to a cumulative water flow V _i (volume flow), and the cumulative water flow V _i is calculated by the following formula (1):

V _i ＝2m _s v _s (1+m)n _i (1)

In the above formula (1), n _i is the number of rotations of the expander 20 accumulated in the temperature section i, m _s is the number of screw grooves of the expander, v _s is the volume of a single screw groove, m is the leakage percentage, and the leakage percentage m It is mainly related to the machining accuracy of the expander, for example, it can be determined by methods such as test calibration before the product leaves the factory. Specifically, the percentage of leakage decreases with the improvement of machining accuracy. For the same expander, the percentage of leakage basically remains unchanged under the condition of constant inlet and outlet pressures. As in this embodiment, the outlet water pressure and return water pressure of the hot water source are basically kept constant (the actual outlet water pressure and return water pressure are different, but the influence of pressure on the specific enthalpy of water can be ignored), so the leakage percentage can be considered m is basically a fixed value. As in a specific embodiment, the leakage percentage m is 0.5%. For example, in a specific implementation, the controller 10 divides the temperature T of the indoor space into three temperature segments: T≥18°C, 18°C>T≥14°C, and T<14°C (ie i=1, 2,3), according to the formula (1), calculate the cumulative amount of water flow in each temperature range, that is, the cumulative amount of water flow in the temperature range of T≥18°C is V ₁ , and the cumulative amount of water flow in the temperature range of 18°C>T≥14°C is V ₂ and the cumulative amount of water flow in the temperature range T<14°C is V ₃ . Still taking the above three temperature sections as an example, the cumulative water flow of the three temperature sections is accumulated and stored, and processed according to the following methods:

The controller 10 receives the temperature and rotational speed signals collected and transmitted by the second temperature sensor 15 and the rotational speed sensor 13 in real time or periodically at regular intervals. According to the temperature of the indoor space detected by the second temperature sensor 15 and the rotational speed sensor 13 and the rotational speed of the expander 20, the cumulative amount of water flow is counted according to the following method:

21) When the temperature of the indoor space detected by the second temperature sensor 15 is in the third temperature range, that is, the temperature range of T<14°C, the controller 10 accumulates the number of rotations of the expander 20, and calculates the accumulated number of rotations according to the above formula (1) Convert to the cumulative amount of water flow, and accumulate the cumulative amount of water flow to the cumulative amount of water flow V ₃ ;

22) When the temperature of the indoor space detected by the second temperature sensor 15 is in the second temperature range, that is, the temperature range of 18°C>T≥14°C, the controller 10 accumulates the number of revolutions of the expander 20, and calculates the accumulated number of revolutions according to The above formula (1) is converted into the cumulative water flow, and the cumulative water flow is accumulated to the cumulative water flow V ₂ ;

23) When the temperature of the indoor space detected by the second temperature sensor 15 is in the first temperature range, that is, the temperature range of T≥18°C, the controller 10 accumulates the number of revolutions of the expander 20, and converts the accumulated number of revolutions according to the above-mentioned The formula (1) is converted into the cumulative water flow, and the cumulative water flow is accumulated into the cumulative water flow V ₁ .

In this way, the heat consumption of the indoor space can be calculated according to each divided temperature segment i and the cumulative water flow V _i accumulated in the temperature segment. Combined with the heat price set by the heating seller, the evaluation of heat consumption can be given more accurately. If the heat price of the heating seller is only determined for the indoor temperature, for any temperature segment i, according to the accumulated water flow V ₁ flow of the temperature segment and the temperature detected by the (first, third) temperature sensor, it can be obtained Show real calorie consumption.

It can be seen that the above-mentioned three temperature segments are just an example. Obviously, the finer the division of the temperature segments is, the more accurate the calorie measurement for the indoor space of a single-family room is. In fact, when the temperature segment is small enough, the real value of the total heat consumption is equal to the result of the integral of the water flow to the temperature; or first divide the indoor temperature into several relatively large temperature segments (such as the aforementioned three) , and then the real value of the total heat consumption is equal to the result of segmental integration of water flow and temperature. More precisely, the temperature (that is, the independent variable) for temperature integration should refer to the difference between the temperature of the supply water and the return water corresponding to the indoor temperature (the detection value of the second temperature sensor) at any point (that is, the (first, second 2) The detection value of the temperature sensor is only worse). Therefore, theoretically, the real heat consumption of the indoor space of a single-family room can be accurately evaluated through the heat metering method of the present invention. As a specific example, in order to simplify the calculation of the heat price, the heating seller can also directly calculate only the flow of each temperature range, that is, directly set the price for the unit water flow of each temperature range. Still taking the previous temperature range (T<14°C, 18°C>T≥14°C, T≥18°C) and its corresponding water flow accumulation (V ₁ , V ₂ , V ₃ ) as an example, based on the same temperature range Assuming that the unit water flow rate corresponds to a uniform unit price of heat consumption, the controller 10 can real-time or periodically calculate the cumulative water flow V ₁ , V ₂ and V ₃ (or corresponding to (V ₁ , V ₂ and V ₃ ) is sent to the monitoring terminal through the communication unit 16 to prevent data loss due to system failure and other reasons. The monitoring terminal centrally receives, displays and processes the aforementioned V ₁ , V ₂ and V ₃ (or the total price of heat consumption corresponding to (V ₁ , V ₂ and V ₃ )), when the device is in normal operation Accurate cumulative water flow information can then be acquired and/or displayed.

When the rotation speed sensor 13 detects that the rotation speed of the expander 20 is violently oscillating/jumping, the braking force detected by the brake 14 and the rotation speed detected by the rotation speed sensor 13 change irregularly, and/or the output voltage of the generator is detected to fluctuate or fluctuate greatly, etc. When an abnormal signal (such as a corresponding voltage sensor is configured at the electric energy output end of the generator), the controller 10 judges whether there is a fault in the device according to the received signal and further determines the specific fault type in the case of a fault, and will The fault type and/or corresponding prompt signal (such as sound and/or light alarm) is sent to the monitoring terminal through the communication unit 16, and at the same time, a signal to close the water supply valve 11 is sent to the water supply valve 11 until the device returns to normal state. Re-open the water supply valve 11. Or the monitoring terminal sends a signal to close the water supply valve 11 to the controller 10 through the communication unit 16 after receiving the fault information. Since the monitoring terminal can obtain the fault information in time and adopt corresponding troubleshooting strategies for the fault, the device can be repaired in time, thus improving the operation reliability of the device and avoiding the water flow measurement caused by the device still running in the fault state Inaccuracies and security incidents etc. After the fault is eliminated, the monitoring terminal sends corresponding feedback information to the controller 10 through the communication unit 16 . Based on the feedback information, the controller 10 opens the water supply valve 11, and the gas treatment system returns to a normal working state.

For example, the monitoring terminal can be a physical server or a cloud server, and the physical server can be a nearby or remote monitoring center. The communication unit 16 can use wired or wireless communication on the premise that the monitoring terminal and the controller 10 can communicate. Through the flexible setting of the monitoring terminal and the timely knowledge of the operating status and operating parameters of the device by the monitoring terminal, as well as the setting that the aforementioned battery 13 can provide power to the controller 10, communication unit 16 and other components, the applicability of the device to the application scene is improved. To a certain extent, the device realizes the purpose of running independently of the user. For example, it can be used in large, medium and small heat metering places, especially suitable for small and medium heat metering places with high precision requirements.

Example 2

Fig. 2 shows a schematic structural diagram of a continuous water supply room heating temperature control and heat metering device according to another embodiment of the present invention. As shown in Figure 2, the difference between embodiment 2 and embodiment 1 is that the generator 23 in the device is replaced by an excitation generator by a common generator, correspondingly, the brake 14 is also omitted in embodiment 2, which is Because: the controller realizes the speed adjustment of the generator by sending a signal to the excitation module of the excitation generator to change the excitation current, and changes the speed of the expander through the speed adjustment of the generator. Specifically, within the range of the maximum allowable speed, the speed of the generator increases with the increase of the excitation current, and the speed of the expander increases; as the excitation current decreases, the speed of the expander increases with the increase of the excitation current. lowered.

The other parts of the device are similar to those in the embodiment, and the pressure regulation method of the device is also basically the same as that in embodiment 1, which will not be repeated here.

It should be noted that the current solution of Embodiment 2 is: the rotational speed sensor collects the rotational speed of the generator, and the controller changes the rotational speed of the generator by adjusting the excitation current based on the rotational speed of the generator, thereby indirectly changing the rotational speed of the expander. The current solution of Embodiment 1 is: the rotational speed sensor collects the rotational speed of the expander, and the controller directly changes the rotational speed of the expander by adjusting the braking force of the brake based on the rotational speed of the expander. However, since the generator and the expander are connected through a coupling, that is, the two are rigidly connected, the rotational speeds of the generator and the expander collected here should be equal. Therefore, in Embodiment 1 and Embodiment 2, Regardless of whether the rotational speed sensor collects the rotational speed of the generator or the expander, no matter whether the controller adjusts the rotational speed of the expander indirectly through the excitation current or directly through the brake (as in Embodiment 1, the brake is set on the expander) or indirectly (Embodiment 1 The replacement form, the brake is set on the rotating speed of the generator) and the expander, all belong to the equivalent technical means.

Fig. 3 is a schematic diagram of the overall structure when the continuous water supply type room heating temperature control and heat metering device corresponding to Embodiment 2 is applied to the heating of a whole building. As shown in Figure 3, both the main water supply pipe and the main return water pipe are installed at the bottom of the building. For example, a centrally heated boiler room is installed at the bottom of the building as a hot water source, the main return water pipe leads to the boiler room, and the main water supply pipe is led out of the boiler room. The temperature control scheme is to divide multiple rooms with roughly the same orientation and orientation in the building into the same room group, and carry out unified temperature control and heat metering on them (shared equally by area). Specifically, each room group is equipped with a water supply standpipe and a water return standpipe (equivalent to the water supply branch pipe and return water branch pipe in Fig. The device shown in Figure 2 is arranged between the water risers. However, in order to adapt the device of the present invention to specific application scenarios, it is necessary to slightly modify the heating temperature control and heat metering device. Specifically, each single-family room in the same room group is equipped with a radiator 21 and a water supply system. Sub-valve 22, that is, each device includes one group ((first, second, third) temperature sensor, water supply valve 11) and a plurality of radiators 21 corresponding to the number of single-family rooms and water supply sub-valve 22, the water supply stand The hot water in the pipe enters the corresponding single-family room through the water supply valve 11 and the water supply sub-valve 22, and then radiates heat to the room of the single-family room through the radiator 21, and then the water outlets of the radiators 21 of each single-family room are respectively collected to the The return riser of the room group corresponding to the room group. The second temperature sensor 15 only detects the temperature of the indoor space of one of the single-family rooms (such as the principle of proximity), that is, by performing unified temperature control and heat metering on a plurality of rooms with similar heat consumption, the accuracy of heat metering is improved, and the heat metering accuracy is also improved. The temperature comfort of single-family indoor heating is improved comprehensively.

Obviously, according to the actual situation, the device in Figure 3 above can also be replaced with the continuous water supply type room heating temperature control and heat metering device corresponding to Example 1, or the cross-mixed use of Example 1 and Example 2 to form Figure 3 application scenarios in .

So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, those skilled in the art can easily understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims (10)

1. a kind of continuous water supply formula room heat supply temperature control and heat metering device, it is characterised in that the device includes：

Current converting system, it is used to discharge to the interior space in single household room to realize user by the heat entrained by thermal water source Heating；

Temperature control metering system, it is used for during user heating, and the operational factor based on the current converting system is obtained Heat consumption parameter and working status parameter；And

Monitoring client, it is used for the data for receiving the current converting system transmission, and for being sent out to the current converting system Send the request for reading data.

2. heat supply temperature control in continuous water supply formula room according to claim 1 and heat metering device, it is characterised in that the temperature Controlling metering system includes controller, water supply valve, sensor group, speed regulation module and communication unit,

Wherein, the sensor group is used for the operational factor for gathering the current converting system；

Wherein, the controller is used for：

The working status parameter is drawn according to the operational factor that the sensor group is gathered, and according to the operation parameter Control the opening/closing state of the water supply valve；And

The heat consumption parameter is drawn according to the operational factor that the sensor group is gathered, and by the operational factor, described All or part in heat consumption parameter and the working status parameter is transmitted to the prison by the communication unit Control end.

3. heat supply temperature control in continuous water supply formula room according to claim 2 and heat metering device, it is characterised in that the water Flowing converting system mainly includes screw type expansion machine, generator and radiator, the water inlet of the screw type expansion machine and connection Water supply branch pipe to thermal water source is connected, and the delivery port of the screw type expansion machine is connected with the first end of radiator, described to dissipate Second end of hot device is connected with being connected to the return branch of thermal water source, and the screw type expansion machine also passes through shaft coupling and generator Connection.

4. heat supply temperature control in continuous water supply formula room according to claim 3 and heat metering device, it is characterised in that the hair Motor is also connected with battery by rectifier, and the battery distinguishes phase by power cable with controller and communication unit Even.

5. heat supply temperature control in continuous water supply formula room according to claim 3 and heat metering device, it is characterised in that the hair Motor is non-excitation generator, and the speed regulation module directly or indirectly adjusts the screw expansion for that can adjust The brake of the rotating speed of machine.

6. heat supply temperature control in continuous water supply formula room according to claim 3 and heat metering device, it is characterised in that the hair Motor is excitation generator, and the speed regulation module is excitation module, and the controller adjusts institute by the excitation module The rotating speed of excitation generator is stated, and then adjusts the rotating speed of the screw type expansion machine indirectly.

7. heat supply temperature control in continuous water supply formula room according to claim 3 and heat metering device, it is characterised in that therein Sensor group includes the first temperature sensor, speed probe, second temperature sensor and three-temperature sensor,

Wherein, the water supply valve and first temperature sensor may be contained within the upper of the water inlet of the screw type expansion machine Trip, the speed probe is arranged at the position that can obtain the screw type expansion machine and/or the generator, described second Temperature sensor is arranged at the interior space in single household room, and the three-temperature sensor is arranged at returning for the radiator downstream Water branch road.

8. heat supply temperature control in continuous water supply formula room according to claim 7 and heat metering device, it is characterised in that described Space is set to the window not close to radiator and single household room to two temperature sensors indoors.

9. a kind of continuous water supply formula room heat supply temperature control and heat measuring method, it is characterised in that this method comprises the following steps：

The operational factor of S100, temperature control metering system based on current converting system draws working status parameter, according to the work State parameter determines whether that temperature control whether there is failure with heat metering device, and

In the case of temperature control and heat metering device have failure, close water supply valve, and by temperature control and heat metering device There is the information transfer of failure to monitoring client；

The operational factor of S200, temperature control metering system based on current converting system draws heat consumption parameter, and by the operation All or part in parameter and the heat consumption parameter is transmitted to monitoring client；

Wherein, the operational factor of the current converting system includes the temperature of the heat transfer medium of screw type expansion machine water inlet upstream The temperature of the heat transfer medium of degree, the temperature of the interior space in single household room, the rotating speed of screw type expansion machine and radiator downstream.

10. heat supply temperature control in continuous water supply formula room according to claim 9 and heat measuring method, it is characterised in that described Heat consumption parameter is the accumulative current cumulative amount V of i-th of temperature section_i, current cumulative amount V_iCalculated by following formula (1)：

V_i=2m_sv_s(1+m)n_i (1)

In above-mentioned formula (1), n_iFor the revolution of the screw type expansion machine added up in temperature section i, m_sFor the screw channel of screw type expansion machine Number, v_sFor the volume of single screw channel, m is leakage percentage,

Wherein, the number i of temperature section and the corresponding temperature range of each temperature section are based on single household room by controller Indoor temperature divides draw in advance.