CN109000022A - A kind of wireless control system and method for wisdom regulating valve - Google Patents

Abstract

The invention provides a wireless control system and method for an intelligent regulating valve, including a valve body, a valve stem, a valve core, an intelligent control device, an electric actuator and a mobile terminal. The valve body includes a liquid inlet section, a valve body cavity and The liquid outlet section, the liquid inlet section, the valve body cavity and the liquid outlet section are connected in sequence, the valve core is installed in the valve body cavity, and the valve stem is fixedly connected with the valve core; the invention is widely used in the hydraulic control of outdoor pipe networks, and its advantages are low energy Power consumption, self-powered without external power supply, integrated remote control, data collection and other functions.

Description

A wireless control system and method for an intelligent control valve

technical field

The invention belongs to the field of valve control, and in particular relates to a wireless control system and method for an intelligent regulating valve.

Background technique

At present, there is a common situation of hydraulic imbalance in the urban central heating pipe network system: windows are opened due to overheating (near-end users), and water is released due to lack of heat (far-end users). At this time, in order to ensure the heating effect of remote users , Most heating units will take measures such as increasing the temperature of the water supply, increasing the power of the circulating pump, and increasing the circulation flow of the pipe network, resulting in an increase in energy consumption for heating. According to statistics, every 1°C increase in the user's room temperature increases the heat supply by 5.5% per day. A practical problem that enterprises have to face is the high operating cost.

Today, the "coal-to-combustion" transformation of urban central heating has further increased the operating costs of enterprises. According to the statistics of heating gas consumption in Tianjin in the past two years, in a complete heating period (average heating is about 150 days), a large The average gas consumption per square meter of part of the heating building area is in the range of 9.5-11.5 cubic meters or even higher for two years. If the price of natural gas used by heating units is 1.97 yuan/cubic meter to calculate, the price of natural gas heating in a heating season is 18.72-22.66 yuan per square meter of heating building area, resulting in annual losses for enterprises.

The hydraulic imbalance of the pipe network makes the water flow of the near-end users greater than the required flow, and the water flow of the remote users is lower than the required flow, resulting in the phenomenon that the near-end users are overheated and the remote users are not hot. The unevenness of cold and heat is mainly caused by the hydraulic imbalance of the pipe network. . The hydraulic balance adjustment of the pipe network is to change the resistance characteristics of the pipe network by adjusting the opening of each regulating device (valve) in the pipe network system. The operating flow is allocated to the ideal flow, that is, the flow that meets the actual heat load demand of the heat user. At present, there is no effective adjustment method for the flow regulation of the heating system pipe network, and the lack of corresponding supporting equipment. It has always been difficult to implement the adjustment of the hydraulic imbalance of the pipe network. In the past, it was only possible to rely on the management personnel to adjust the unit inlet valves (regulating valves or balance valves) one by one according to the user's reaction situation or use a portable flowmeter to detect and adjust one by one, which is time-consuming and laborious. Troubleshoot system imbalances.

Contents of the invention

In view of this, the present invention aims to propose a wireless control system and method for an intelligent regulating valve that can solve the hydraulic imbalance of the heating pipe network and realize the hydraulic balance of the whole network through remote control.

In order to achieve the above object, technical solution of the present invention is achieved in that way:

A wireless control system for an intelligent regulating valve, including a valve body, a valve stem, a valve core, an intelligent control device, an electric actuator, and a mobile terminal. The valve body includes a liquid inlet section, a valve body cavity, and a liquid outlet section. Section, valve body cavity and liquid outlet section are connected in sequence, the valve core is installed in the valve body cavity, and the valve stem is fixedly connected with the valve core;

The intelligent control device includes a flow sensor, a temperature sensor, a controller, a motor servo module, a wireless communication module and a battery, the flow sensor and the temperature sensor are all connected to the controller data, and the output terminal of the battery is connected to the controller line , the controller is respectively coupled to the motor servo module and the wireless communication module, the motor servo module is connected to the electric actuator drive, and the wireless communication module is connected to the mobile terminal for communication;

The electric actuator is connected to the valve stem through a connection plate, the flow sensor is closely connected to the outer wall of the liquid inlet section, and the temperature sensor is fixed to the inner wall of the liquid outlet section.

Further, the battery is a lithium polymer rechargeable battery.

Further, the battery input end is connected with a micro flow generator.

Further, the described micro flow generator is provided with two guide pipes, one end of the first and second flow guide pipes are fixedly connected with the micro flow generator, and the other end of the first flow guide pipe is It is connected with the liquid inlet section of the valve body, and the other end of the second guide pipe is connected with the liquid outlet section of the valve body.

Further, micro switches are respectively installed on the first and second guide tubes, and the micro switches are connected to the micro flow generators.

Further, the bottom end of the valve body cavity is also provided with a fixed shaft, and the fixed shaft is connected to the bottom of the valve core.

Further, a method for applying a wireless control system such as an intelligent regulating valve is characterized in that it includes the following steps:

(1) First, install the above-mentioned intelligent control valve at the first-level branch node positions of several pipe networks;

(2) Then, install the described intelligent regulating valve at the secondary terminal node of each pipe network;

(3) The data transmitted by the mobile terminal through the wireless communication module is calculated according to the instantaneous flow rate and the return water temperature collected by each intelligent control valve through the flow sensor and the temperature sensor, and then compared with the system set value;

(4) After comparing the data described in step (3), generate the reasonable flow values of the first-level branch nodes and the second-level end nodes respectively, and send them to each intelligent control valve through the wireless communication module;

(5) Each intelligent control valve performs initial adjustment after receiving the instruction;

(6) After the initial adjustment is completed, the mobile terminal compares the data uploaded by the smart regulating valve of the first-level branch node with the system setting value, and finds that the smart regulating valve of a certain branch node has an error, and sends the adjustment command of the smart regulating valve , cyclically operate until the error of the feedback data is within the normal range, and the first-level balance adjustment ends;

(7) After the first-level balance adjustment is completed, the mobile terminal compares the data uploaded by the smart control valve of the second-level end node with the system setting value, and finds that the smart control valve of a certain second-level end node has an error, and sends the smart control valve. Adjustment command, loop operation until the error of the feedback data is within the normal range, and the secondary balance adjustment ends.

Further, the wireless communication module described in step (3) is a GPRS communication module or an NB-IOT Internet of Things module.

Further, the normal range of the error generated by comparing the feedback data of the intelligent regulating valve on the first-level branch node with the system setting value in step (6) is no more than 5%.

Further, the normal range of the error generated by comparing the feedback data of the intelligent regulating valve on the secondary end node described in step (7) with the system setting value is not greater than 5%.

Compared with the prior art, the wireless control system and method of a smart control valve according to the present invention has the following advantages:

As a new technology developed to solve the hydraulic imbalance of the heating pipe network, the present invention realizes full coverage and automatic collection of original operating data (heat, flow, temperature) through the Internet, and remotely transmits the data to the mobile terminal. Transmission and transmission of adjustment data instructions to the intelligent control valves of each distribution node of the pipeline network, the flow of each node of the pipeline network can be accurately adjusted through online data, and all nodes in the entire region can be adjusted synchronously to achieve the hydraulic balance of the entire network; the remote control module described in the present invention Receive the adjustment command sent by the remote APP to control the electric actuator to adjust the valve opening to achieve precise control.

The invention is widely used in the hydraulic control of the outdoor pipe network, and has the advantages of low energy consumption, self-power supply without external power supply, integration of remote control and data collection and other functions.

Description of drawings

The drawings constituting a part of the present invention are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Fig. 1 is the structural representation described in the embodiment of the present invention;

Fig. 2 is a schematic diagram of a module described in an embodiment of the present invention.

Explanation of reference signs:

1. Intelligent control device; 11. Flow sensor; 12. Temperature sensor; 2. Valve body; 21. Liquid inlet section; 22. Valve body cavity; 23. Liquid outlet section; 3. Valve core; 4. Electric actuator; 5 , the valve rod; 6, the micro-current generator; 61, the first guide tube; 62, the second guide tube; 63, the micro switch; 7, the fixed shaft.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

In the description of the present invention, it should be noted that unless otherwise specified 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 of ordinary skill in the art can understand the specific meanings of the above terms in the present invention based on specific situations.

The present invention will be described in detail below with reference to the accompanying drawings and examples.

A wireless control system for an intelligent regulating valve, comprising a valve body 2, a valve stem 5, a valve core 3, an intelligent control device 1, an electric actuator 4, and a mobile terminal. The valve body 2 includes a liquid inlet section 21, a valve body cavity 22 and the liquid outlet section 23, the liquid inlet section 21, the valve body cavity 22 and the liquid outlet section 23 are sequentially connected, the valve core 3 is installed in the valve body cavity 22, and the valve stem 5 is fixedly connected with the valve core 3;

Described intelligent control device 1 comprises flow sensor 11, temperature sensor 12, controller, motor servo module, wireless communication module and battery, and described flow sensor 11 and temperature sensor 12 are all connected with controller data, and the output terminal of battery Connect with the controller circuit, the controller is respectively coupled with the motor servo module and the wireless communication module, the motor servo module is connected with the electric actuator 4 for driving, and the wireless communication module is connected with the mobile terminal for communication;

The electric actuator 4 is connected to the valve stem 5 through a connecting plate, the flow sensor 11 is closely connected to the outer wall of the liquid inlet section 21 , and the temperature sensor 12 is fixed on the inner wall of the liquid outlet section 23 .

The battery is a lithium polymer rechargeable battery.

The battery input end is connected with a micro flow generator 6 .

Described micro-current generator 6 is provided with two guide tubes, and one end nozzle of described first 61, second guide tube 62 is all fixedly connected with micro-current generator 6, the first guide tube 61 The nozzle at the other end communicates with the liquid inlet section 21 of the valve body 2 , and the nozzle at the other end of the second guide tube 62 communicates with the liquid outlet section 23 of the valve body 2 .

The first 61 and the second guide tube 62 are respectively equipped with a micro switch 63 , and the micro switch 63 is connected with the micro flow generator 6 .

The bottom end of the valve body cavity 22 is also provided with a fixed shaft 7 , and the fixed shaft 7 is connected to the bottom of the valve core 3 .

The wireless communication module of the present invention adopts GPRS communication mode for receiving instructions and uploading and collecting data; the flow sensor 11 is installed in the liquid inlet section 21 of the valve body 2 for collecting instantaneous flow; the temperature sensor 12 is installed in the liquid outlet Section 23 is used to collect medium temperature.

The miniature water current generator 6 used in the complaint adopts a miniature permanent magnet generator, which requires a small driving pressure difference and a power generation of up to 30W. The micro switch 63 on the draft tube can be adjusted according to the needs, and it is installed on one side of the valve body 2. , output DC12V voltage for battery charging.

The valve core 3 is installed inside the valve body 2 and forms a sealing assembly with the valve body cavity 22 . The valve core 3 is a hemispherical V-shaped ball core, which can precisely adjust the flow rate. The wireless communication module receives the adjustment command from the mobile terminal and controls the electric actuator 4 to adjust the valve opening to achieve precise control.

Among them, the spool 3 is a hemispherical V-shaped fixed spool 3, which is casted with 304 stainless steel, and undergoes processes such as spherical surface processing, grinding, heat treatment, and nitriding treatment on the surface. It has wear resistance, small flow resistance, and flow rate adjustment. Features, stable flow pressure, non-zero leakage design with a leakage rate of ≦5%. Small size, easy to install anywhere on the pipeline.

The valve stem 5 is made of corrosion-resistant stainless steel, concentric with the fixed shaft 7, with good sealing performance, no leakage, and small rotational torque. The valve stem 5 adopts a double-layer O-ring seal design at the bottom and upper part, and the overall static torque is ≦50NM.

The battery is a 10AH polymer lithium battery, the motor servo module is used for motor operation control, and the drive gearbox is used for motor torque output.

The flow sensor 11 is an ultrasonic clamp-on flow sensor 11, which adopts TDS100 ultrasonic low-energy integrated chip, which has low energy consumption, small size, high accuracy and good stability. The temperature sensor 12 is a plug-in temperature sensor 12 with a sheath, which adopts a low-power LoRa chip, which has low energy consumption, small size, high accuracy and good stability.

The water flow generator assembly consists of a miniature permanent magnet water flow DC generator and Composed of a guide tube, fixed on one side of the valve body 2, and integrated with the valve body 2, the output voltage is DC12V and the rated power is 25W, which is used for charging the lithium battery.

The electric actuator adopted in the present invention has low power consumption and high torque output, and can be rotated and adjusted by 90°.

A method for applying a wireless control system such as an intelligent regulating valve, comprising the following steps:

(1) First, install the above-mentioned intelligent control valve at the first-level branch node positions of several pipe networks;

(2) Then, install the described intelligent regulating valve at the secondary terminal node of each pipe network;

(3) The data transmitted by the mobile terminal through the wireless communication module is calculated according to the instantaneous flow rate and the return water temperature collected by each intelligent control valve through the flow sensor 11 and the temperature sensor 12, and then compared with the system set value ;

(4) After comparing the data described in step (3), generate the reasonable flow values of the first-level branch nodes and the second-level end nodes respectively, and send them to each intelligent control valve through the wireless communication module;

(5) Each intelligent control valve performs initial adjustment after receiving the instruction;

(6) After the initial adjustment is completed, the mobile terminal compares the data uploaded by the smart regulating valve of the first-level branch node with the system setting value, and finds that the smart regulating valve of a certain branch node has an error, and sends the adjustment command of the smart regulating valve , cyclically operate until the error of the feedback data is within the normal range, and the first-level balance adjustment ends;

(7) After the first-level balance adjustment is completed, the mobile terminal compares the data uploaded by the smart control valve of the second-level end node with the system setting value, and finds that the smart control valve of a certain second-level end node has an error, and sends the smart control valve. Adjustment command, loop operation until the error of the feedback data is within the normal range, and the secondary balance adjustment ends.

The wireless communication module described in step (3) is a GPRS communication module or an NB-IOT Internet of Things module. The signal is stable and the transmission distance is not limited.

The normal range of the error generated by comparing the feedback data of the intelligent regulating valve on the first-level branch node with the system setting value in step (6) is not more than 5%.

The normal range of the error generated by comparing the feedback data of the intelligent regulating valve on the secondary end node described in step (7) with the system setting value is not greater than 5%.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (10)

1. A wireless control system for an intelligent regulating valve, characterized in that it includes a valve body, a valve stem, a valve core, an intelligent control device, an electric actuator and a mobile terminal, and the valve body includes a liquid inlet section, a valve body cavity and The liquid outlet section, the liquid inlet section, the valve body cavity and the liquid outlet section are connected in sequence, the valve core is installed in the valve body cavity, and the valve stem is fixedly connected with the valve core; The intelligent control device includes a flow sensor, a temperature sensor, a controller, a motor servo module, a wireless communication module and a battery, the flow sensor and the temperature sensor are all connected to the controller data, and the output terminal of the battery is connected to the controller line , the controller is respectively coupled to the motor servo module and the wireless communication module, the motor servo module is connected to the electric actuator drive, and the wireless communication module is connected to the mobile terminal for communication; The electric actuator is connected to the valve stem through a connection plate, the flow sensor is closely connected to the outer wall of the liquid inlet section, and the temperature sensor is fixed to the inner wall of the liquid outlet section. 2. A wireless control system for an intelligent regulating valve according to claim 1, wherein the battery is a lithium polymer rechargeable battery. 3 . The wireless control system of an intelligent regulating valve according to claim 1 , wherein the input end of the battery is connected to a micro flow generator. 4 . 4. A wireless control system for an intelligent control valve according to claim 3, characterized in that: said micro flow generator is provided with two guide tubes, one end of said first and second guide tubes The nozzles are all fixedly connected to the micro-current generator, the other end of the first guide pipe is connected to the liquid inlet section of the valve body, and the other end nozzle of the second guide pipe is connected to the liquid outlet section of the valve body . 5. A wireless control system for an intelligent control valve according to claim 1, characterized in that: said first and second guide pipes are respectively equipped with micro-switches, said micro-switches and micro-water flow power generation machine connection. 6 . The wireless control system of an intelligent regulating valve according to claim 1 , wherein a fixed shaft is provided at the bottom of the valve body cavity, and the fixed shaft is connected to the bottom of the valve core. 7 . 7. A method for applying a wireless control system for a smart regulating valve as claimed in claims 1-5, characterized in that it comprises the following steps: (1) First, install the above-mentioned intelligent control valve at the first-level branch node positions of several pipe networks; (2) Then, install the described intelligent regulating valve at the secondary terminal node of each pipe network; (3) The data transmitted by the mobile terminal through the wireless communication module is calculated according to the instantaneous flow rate and the return water temperature collected by each intelligent control valve through the flow sensor and the temperature sensor, and then compared with the system set value; (4) After comparing the data described in step (3), generate the reasonable flow values of the first-level branch nodes and the second-level end nodes respectively, and send them to each intelligent control valve through the wireless communication module; (5) Each intelligent control valve performs initial adjustment after receiving the instruction; (6) After the initial adjustment is completed, the mobile terminal compares the data uploaded by the smart regulating valve of the first-level branch node with the system setting value, and finds that the smart regulating valve of a certain branch node has an error, and sends the adjustment command of the smart regulating valve , cyclically operate until the error of the feedback data is within the normal range, and the first-level balance adjustment ends; (7) After the first-level balance adjustment is completed, the mobile terminal compares the data uploaded by the smart control valve of the second-level end node with the system setting value, and finds that the smart control valve of a certain second-level end node has an error, and sends the smart control valve. Adjustment command, loop operation until the error of the feedback data is within the normal range, and the secondary balance adjustment ends. 8. A wireless control method for an intelligent control valve according to claim 6, characterized in that: the wireless communication module described in step (3) is a GPRS communication module or an NB-IOT Internet of Things module. 9. The wireless control method of a smart control valve according to claim 6, characterized in that: the feedback data of the smart control valve on the first-level branch node described in step (6) is compared with the system set value to generate The normal range of error is not more than 5%. 10. A wireless control method for an intelligent regulating valve according to claim 6, characterized in that: the feedback data of the intelligent regulating valve on the secondary terminal node described in step (7) is compared with the system set value generated The normal range of error is not more than 5%.