An operation control system and control method based on room temperature control and quantity regulation

Abstract

This invention discloses an operation control system and method based on room temperature control and quantity regulation. The operation control system consists of three parts: an operation control platform equipped with computer-related hardware and software facilities for data transmission, storage, and processing; a heat exchange station control hardware and software facility composed of hardware and software facilities capable of measuring and controlling water supply temperature and transmitting related signals, and hardware and software facilities capable of automatically realizing the frequency conversion function of circulating water pumps and transmitting related signals; and a user-end control hardware and software facility composed of hardware and software facilities capable of automatically regulating user flow based on user room temperature signals and hardware and software facilities capable of measuring and transmitting related signals. Using this control system, the operation of the heating system is regulated with indoor temperature as the target control parameter, circulating flow and water supply temperature as active control parameters, and return water temperature as passive control parameter. The control effect is rapid, stable, and energy-saving.

Description

Technical Field

[0001] This invention relates to the field of centralized heating, and more particularly to the field of operation and regulation of centralized heating systems. Background Technology

[0002] There are usually six controllable parameters involved in the operation and regulation of a centralized heating system: heat load, supply water temperature, return water temperature, flow rate, indoor temperature, and outdoor temperature. Among them, supply water temperature, return water temperature, indoor temperature, and flow rate are controllable parameters of the heating system, while outdoor temperature and heat load are non-controllable parameters.

[0003] In the operation and regulation of heating systems, the four adjustable parameters mentioned above can be further divided into target control parameters, active control parameters, and passive control parameters, depending on the control strategy. Based on the target control parameters, there are currently two main control strategies: return water temperature control and indoor temperature control. Comparing the two strategies, indoor temperature control has advantages such as stable room temperature, small fluctuations, and rapid room temperature response, while return water temperature control exhibits significant disadvantages such as delayed room temperature response, large fluctuations, and instability. Based on the active control parameters, there are currently three main control strategies: qualitative regulation, combined qualitative and quantitative regulation, and quantitative regulation. Qualitative regulation was a commonly used control strategy before the advent of frequency conversion technology, and it has disadvantages such as delayed regulation response and high power consumption of circulating water pumps. Combined qualitative and quantitative regulation is a widely adopted control strategy after the advent of frequency conversion technology. Although this strategy reduces the power consumption of circulating water pumps to some extent, it still does not achieve the optimal energy-saving state and also suffers from delayed regulation response. Quantitative regulation, on the other hand, can completely overcome the disadvantages of combined qualitative and quantitative regulation.

[0004] Different combinations of target control parameters and active control parameters can form different operation control methods and systems. This invention proposes an operation control method and system based on room temperature control and quantity regulation, using indoor temperature as the target control parameter, circulating flow rate and supply water temperature as active control parameters, and return water temperature as passive control parameters. Summary of the Invention

[0005] To overcome the shortcomings of the return water temperature control method, such as delayed indoor temperature response, large fluctuations, and instability, as well as the technical defects of the quality regulation and quality-quantity combined regulation methods, such as poor indoor temperature control effect, large power consumption of the circulation system, and inability to fully realize energy-saving potential, this invention aims to propose an operation regulation system and regulation method based on room temperature control and quantity regulation, which has a rapid response, stable regulation effect, and sufficient power saving.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] An operation control system based on room temperature control and quantity regulation is characterized by comprising three parts: an operation control platform, heat exchange station control hardware and software facilities, and user-end control hardware and software facilities; wherein:

[0008] The operation control platform consists of computer-related hardware and software facilities with data transmission, storage and processing functions. It is used to receive and process relevant signals transmitted from the control hardware and software facilities in the heat exchange station and the client hardware and software control facilities, and output relevant control commands to the relevant hardware and software facilities according to the processing results.

[0009] The aforementioned heat exchange station control hardware and software facilities include hardware and software facilities capable of realizing the measurement and control of the secondary heat medium supply water temperature and related signal transmission functions, and hardware and software facilities capable of automatically realizing the frequency conversion function of the circulating water pump and related signal transmission functions. The former is used to measure the temperature of the secondary heat medium supply water and transmit the temperature signal to the operation control platform, and to receive and execute relevant instructions from the operation control platform to maintain the supply water temperature at a certain set value or to automatically change it according to a certain predetermined rule; the latter is used to receive and execute relevant instructions from the operation control platform, automatically adjust the operating frequency of the circulating water pump to a certain appropriate value, and at the same time transmit relevant frequency, flow rate, temperature difference and other signals to the operation control platform.

[0010] The aforementioned client-side control hardware and software facilities consist of hardware and software facilities for setting and measuring room temperature and automatically controlling user flow, as well as hardware and software facilities for related signal measurement and transmission functions. They are used to set and measure the room temperature of each client, and transmit the room temperature and valve opening signals to the operation control platform, while receiving and executing relevant instructions from the operation control platform.

[0011] Furthermore, the aforementioned heat exchange station control software and hardware facilities include two components: secondary heat medium supply water temperature control software and hardware facilities and circulating water pump frequency conversion control software and hardware facilities. The secondary heat medium supply water temperature control software and hardware facilities include a primary network electric regulating valve, a valve control system and corresponding valve position signals, a secondary network temperature sensor and temperature signal transmission device, etc., wherein the primary network electric regulating valve is installed on the primary heat medium supply or return water pipeline of the heat exchange unit, and the secondary network temperature sensor is installed on the secondary heat medium supply pipeline of the heat exchange unit; the circulating water pump frequency conversion control software and hardware facilities include a circulating water pump frequency converter and corresponding signal transmission device, wherein the circulating water pump frequency converter and corresponding signal transmission device are preferably installed near the circulating water pump.

[0012] Furthermore, the aforementioned client-side hardware and software control facilities include a client-side indoor temperature setting and measurement device, a corresponding temperature signal transmission device, a client-side electric regulating valve and a corresponding signal transmission device. The client-side indoor temperature measurement device and the corresponding temperature signal transmission device are installed in a designated location in the room, and the client-side electric regulating valve and the corresponding signal transmission device should be installed on the water supply or return pipe at the client-side heating inlet.

[0013] Furthermore, the operation and control platform of the centralized heating system consists of hardware and software facilities and other auxiliary components that realize functions such as signal transmission, data storage, data processing and data output, and is installed inside the heat exchange station of the centralized heating system or in a separate room.

[0014] The control method of the above-mentioned operation control system based on room temperature control and quantity regulation of the present invention is characterized in that it includes two parts: secondary heat medium supply water temperature control and secondary heat medium flow rate control. Both parts are controlled by the operation control platform. Upon initial operation, the secondary heat medium supply water temperature control is activated first. After the heating system stabilizes, the secondary heat medium flow rate control is activated. Thereafter, the two parts operate independently in a cyclical manner according to their respective intervals.

[0015] The steps for regulating the temperature of the secondary heat medium water supply are as follows:

[0016] 1.1: Set the secondary heat medium supply water temperature range on the operation and control platform;

[0017] 1.2: The operation and control platform receives the measured signal of the secondary heat medium supply water temperature, compares it with the set range value, and outputs the control command of the primary electric regulating valve based on the comparison result. The control command is divided into the following three cases:

[0018] If the measured temperature of the secondary heat medium supply water is within the set range, a control command is issued to keep the primary electric regulating valve in its current state. If the measured temperature of the secondary heat medium supply water is lower than the lower limit of the set range, a control command is issued to increase the primary electric regulating valve by one level or one step. If the measured temperature of the secondary heat medium supply water is higher than the upper limit of the set range, a control command is issued to decrease the primary electric regulating valve by one level or one step.

[0019] It should be noted that since some electric regulating valves have gears and some do not, there will be statements about adjusting according to the gear or step size. The same principle applies to adjusting the electric regulating valve at the user end.

[0020] 1.3: The actuator of the electric regulating valve receives the control command and completes one regulation action;

[0021] 1.4: Repeat steps 1.2-1.3 at regular intervals to cyclically regulate the secondary heat medium supply water temperature, so that the secondary heat medium supply water temperature is maintained within the set range. The size of each interval is determined based on the principle of facilitating the stability of water supply temperature control and the stability of the regulation system operation.

[0022] The secondary heat medium flow rate regulation steps are as follows:

[0023] 2.1: Flow control by adjusting the opening of the user-side electric regulating valve

[0024] 2.1.1: Acquisition of relevant room temperature signals at the user terminal

[0025] The operation and control platform receives room temperature setting range signals from all users and room temperature signals from indoor temperature measuring devices;

[0026] 2.1.2: User-side electric regulating valve control

[0027] The operation and control platform compares the received measured room temperature value with the respective room temperature set range value, and then sends an opening adjustment command to all household electric regulating valves; the control of each household electric regulating valve is implemented according to the following strategy:

[0028] If the measured room temperature value received by the operation and control platform for a certain household is lower than the lower limit of the set range for that household, the operation and control platform will issue a command to increase the opening of the electric regulating valve of that household by one level or one step. If the measured room temperature value received by the operation and control platform for a certain household is higher than the upper limit of the set range for that household, the operation and control platform will issue a command to decrease the opening of the electric regulating valve of that household by one level or one step. If the measured room temperature value received by the operation and control platform at regular intervals is exactly within the set range for that household, the operation and control platform will issue a command to keep the electric regulating valve of that household at its original opening.

[0029] 2.2: Flow control of circulating water pumps operating by frequency converter

[0030] 2.2.1: Select the most unfavorable end-user electric regulating valve

[0031] After the control is completed in step 2.1.2, the control platform receives and compares the opening signals of all user-end electric control valves, and selects the user-end electric control valve with the largest opening as the most unfavorable user-end electric control valve.

[0032] 2.2.2: Setting the frequency adjustment range of the circulating water pump

[0033] Set a certain range of the opening degree of the most unfavorable end-user electric regulating valve as the frequency regulation range of the circulating water pump;

[0034] 2.2.3: Frequency control of circulating water pumps

[0035] If the opening value of the least unfavorable user-end electric regulating valve is lower than the lower limit of the frequency adjustment range of the circulating water pump set in step 2.2.2, the operation and control platform issues a command to reduce the frequency of the circulating water pump; if the opening value of the least unfavorable user-end electric regulating valve is higher than the upper limit of the frequency adjustment range of the circulating water pump set in step 2.2.2, the operation and control platform issues a command to increase the frequency of the circulating water pump; if the opening value of the least unfavorable user-end electric regulating valve is exactly within the frequency adjustment range of the circulating water pump set in step 2.2.2, the operation and control platform issues a command to stabilize the circulating water pump at the current frequency. The magnitude of the "certain frequency" is selected according to the principle of being conducive to the stability of the operating conditions and the stability of the control system.

[0036] 2.3: Repeat steps 2.1-2.2 at regular intervals to cyclically regulate the flow rate of the secondary heat medium, so that the indoor temperature of all households eventually reaches the set value range. The size of each interval is determined based on the principle of facilitating the stability of indoor temperature control and the stability of the control system operation.

[0037] The advantages of this invention are explained below based on its adjustment principle:

[0038] 1. Due to the slow flow velocity of the heat transfer medium in the pipeline system and the large heat storage capacity of the fluid itself, the temperature change of the heat transfer medium is slow. This results in a significant time lag between changes in the system's heating capacity and changes in the heat load in quality-based or combined quality-quantity control modes. Consequently, it is difficult to quickly reach the ideal room temperature, affecting the temperature control effect of the heating environment. In the room temperature control mode of this invention, because changes in the fluid's mechanical parameters, such as pressure and flow rate, propagate at the speed of sound in the pipeline system, the changes in the heating system's heating capacity are almost simultaneous with changes in the heat load in time, which is beneficial for the timeliness and stability of room temperature control.

[0039] 2. The change in system heat supply depends on the heat load, i.e., changes in outdoor meteorological parameters, and is independent of the operating regulation mode adopted. However, in terms of power consumption for heat medium transportation, among the three control modes of quality regulation, quality-quantity combined regulation, and quantity regulation, quantity regulation has the lowest power consumption. Moreover, the quantity regulation mode can be implemented through various variable flow methods, such as adjustment of the terminal electric regulating valve in conjunction with the operation of the fixed frequency pump, adjustment of the terminal electric regulating valve in conjunction with the passive frequency conversion operation of the variable frequency pump, adjustment of the terminal electric regulating valve in conjunction with the manual frequency conversion of the variable frequency pump, and adjustment of the terminal electric regulating valve in conjunction with the active frequency conversion operation of the variable frequency pump proposed in this invention. Among the above variable flow control methods, the quantity regulation control method proposed in this invention has the lowest power consumption.

[0040] 3. This invention adopts dynamic cyclic regulation for the heating system. The primary electric regulating valve or the household electric regulating valve adjusts one level or one step in one cycle. The circulating water pump adjusts at a fixed frequency in one cycle. The advantage of this is that when the system starts running, each adjustment brings the heating temperature and indoor temperature close to the set value range. With multiple cycles of regulation, the heating temperature and indoor temperature gradually reach the set value range, and the heating system tends to stabilize. Once the system is stable, it is easy to adjust. If the water supply temperature or indoor temperature becomes abnormal, sometimes one cycle can regulate the water supply temperature or indoor temperature back to the set value range. This results in high efficiency and low energy consumption.

[0041] 4. The operation control method and system proposed in this invention have a reasonable control model, a single control parameter, a simple control logic, and are easy to implement. Attached Figure Description

[0042] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. The accompanying drawings described below are merely schematic diagrams of an example of the present invention. For those skilled in the art, other similar drawings can be obtained based on these drawings.

[0043] Figure 1 This is a simplified flowchart of an example of the present invention, using n user branches and wireless transmission as an example.

[0044] In the diagram: K represents the operation and control platform; R represents the heat exchange station; B represents the circulating water pump; Y1-Y n These represent the 1st to nth user terminals respectively; F0 represents the electric regulating valve of the heat exchange station's main network; F1-F n These represent the 1st to the nth user-end electric regulating valves, respectively. Detailed Implementation

[0045] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0046] from Figure 1 As can be seen, the overall hardware and software of the operation control system of the present invention comprises three main parts: operation control platform hardware and software facilities, heat exchange station control hardware and software facilities, and user-end control hardware and software facilities, wherein:

[0047] The hardware and software facilities of the operation and control platform include data storage and processing facilities as well as signal transmission facilities;

[0048] The heat exchange station control hardware and software facilities include an electric regulating valve F0 and its auxiliary facilities installed on the primary heat medium supply or return water pipeline of the heat exchange unit, a temperature sensor and its signal transmission auxiliary facilities installed on the secondary heat medium supply water pipeline of the heat exchange unit, and a variable frequency circulating water pump and its frequency control hardware and software facilities installed on the heat exchange station heating network.

[0049] The client-side control hardware and software facilities include those installed on the first to nth clients Y1-Y n Electric regulating valves F1-F on the supply or return water pipes at the heat inlet n And its signal measurement and transmission facilities, as well as the indoor temperature setting and measurement device and its signal transmission facilities installed in the room.

[0050] The following is based on Figure 1 This invention details how the operating control system based on room temperature control and quantity regulation is implemented. In the following method, the primary electric regulating valve F0 and the first to nth user-end electric regulating valves F1-F... n All are electrically adjustable valves with adjustable settings.

[0051] The operation control method of this invention comprises two parts: the first part is the control of the secondary heat medium supply water temperature, and the second part is the control of the secondary heat medium flow rate. Both parts are independently controlled by the operation control platform K. When the control system is first started, the secondary heat medium supply water temperature control is initiated first. After the heating system has stabilized, the secondary heat medium flow rate control is then initiated. Subsequently, the two parts operate independently in a cyclical manner according to their respective time intervals.

[0052] Part 1: The steps for regulating the temperature of the secondary heat medium supply water are as follows:

[0053] 1.1: Set the secondary heat medium supply water temperature on the operation and control platform K, for example, 60℃±1℃;

[0054] 1.2: The operation and control platform K receives the measured signal of the secondary network heat medium supply water temperature and compares it with the set value. If the measured value is higher than 61℃, the operation platform K issues a control command to close the primary electric regulating valve F0 by one level. If the measured value is lower than 59℃, the operation platform K issues a control command to open the primary electric regulating valve F0 by one level. If the measured value is exactly between 59℃ and 61℃, the operation and control platform K issues a control command to keep the primary electric regulating valve F0 at its original opening.

[0055] 1.3: The actuator of the electric regulating valve F0 receives the regulation command issued by the operation and control platform K and completes one regulation action;

[0056] For example, if the electric regulating valve F0 receives a control command to close one level, then the electric regulating valve F0 will close one level; if the electric regulating valve F0 receives a control command to open one level, then the electric regulating valve F0 will open one level; if the electric regulating valve F0 receives a control command to maintain the original opening, then the electric regulating valve F0 will maintain the original opening.

[0057] 1.4: Repeat steps 1.2 and 1.3 at regular intervals to cyclically regulate the temperature of the secondary heat medium supply water so that it is eventually maintained at the set value of 60°C.

[0058] For example, 10 minutes after the control action in step 1.3 is completed, the operation control platform K receives the measured signal of the secondary heat medium water supply temperature again, and repeats steps 1.2 and 1.3. This cycle continues until the secondary heat medium water supply temperature is maintained at the set value of 60℃, that is, between 59℃ and 61℃.

[0059] Part Two: The steps for regulating the flow of the secondary heat medium are as follows:

[0060] 2.1: Flow control by adjusting the opening of the user-side electric regulating valve

[0061] 2.1.1: Acquisition of relevant room temperature signals at the user terminal

[0062] The operation and control platform K receives the first to nth client Y1-Y n The temperature measurement device emits a room temperature signal and a room temperature set range signal;

[0063] 2.1.2: Flow control by adjusting the opening degree of the user-side electric regulating valve

[0064] The operation and control platform K will receive the first to nth client Y1-Y n The room temperature signal emitted by the temperature measuring device is compared with its respective room temperature set range, and then transmitted to all household electric regulating valves, namely the first to the nth household electric regulating valves F1 to F2. n Issue an opening adjustment command;

[0065] If the room temperature value received by the control platform K at a certain household is exactly within the set room temperature range of that household, the control platform K will issue a command to keep the electric regulating valve at that household at its original opening. If the room temperature value received by the control platform K at a certain household is lower than the lower limit of the set range, the control platform K will issue a command to increase the opening of the electric regulating valve at that household by one level. If the room temperature value received by the control platform K at a certain household is higher than the upper limit of the set range, the control platform K will issue a command to decrease the opening of the electric regulating valve at that household by one level.

[0066] For example, let the m-th client Y be...m The lower limit of the room temperature setting range is 19℃, and the upper limit is 21℃. If the room temperature value of the m-th household terminal received by the operation and control platform K is exactly within the room temperature setting range of that household terminal, then the operation and control platform K issues a command to keep the electric regulating valve of the m-th household terminal at its original opening; if the room temperature value of the m-th household terminal received by the operation and control platform K at regular intervals is within the room temperature setting range of that household terminal, then the operation and control platform K issues a command to keep the electric regulating valve of the m-th household terminal at its original opening. m If the room temperature value is lower than the lower limit of 19°C of the set range at the user terminal, the operation and control platform K issues a command to the m-th user terminal electric regulating valve F. m Increase the opening by one level; if the control platform K receives the m-th client Y at regular intervals. m If the room temperature value is higher than the upper limit of the set range of the user terminal by 21°C, the operation and control platform K will issue a command to the m-th user terminal Y. m electric regulating valve F m Reduce the opening by one level;

[0067] 2.2: Flow control of circulating water pumps operating by frequency converter

[0068] 2.2.1: Select the most unfavorable end-user electric regulating valve

[0069] After the control process in step 2.1.2 is completed, the control platform K receives the first to nth user-end electric regulating valves F1 to F2. n The opening signals are compared, and the electric control valve with the largest opening is selected as the most unfavorable electric control valve. Assume the nth electric control valve F... n If the opening degree is the largest, then the nth client is the most unfavorable client.

[0070] 2.2.2: Setting the frequency adjustment range of the circulating water pump

[0071] Set the nth household-side electric regulating valve F n A certain opening range is used as the frequency adjustment range of the circulating water pump. For example, the nth household-end electric regulating valve F is set. n The frequency adjustment range of circulating water pump B is between 85% and 95% of its full opening.

[0072] For electric regulating valves without gears, the opening range of 85% to 95% of the full opening refers to 85% to 95% of the step size.

[0073] For electrically controlled regulating valves with adjustable positions, the opening degree between 85% and 95% of the full opening needs to be converted into a range based on the total number of positions. For example, the nth user-side electrically controlled regulating valve F n There are 10 settings. The range of 85% to 95% of the full opening is represented by the 9th setting, for example, the nth user-side electric regulating valve F. nThere are 20 gears. The range of 85% to 95% opening is converted into gear ranges 17, 18, and 19.

[0074] 2.2.3: Frequency control of circulating water pump B

[0075] If the opening value of the least favorable user-end electric regulating valve is exactly within the frequency adjustment range of circulating water pump B set in step 2.2.2, then the operation control platform K issues a command for circulating water pump B to operate stably at the current frequency; if the opening value of the least favorable user-end electric regulating valve is lower than the lower limit of the frequency adjustment range of circulating water pump B set in step 2.2.2, then the operation control platform K issues a command for circulating water pump B to operate at a certain frequency; if the opening value of the least favorable user-end electric regulating valve is higher than the upper limit of the frequency adjustment range of circulating water pump B set in step 2.2.2, then the operation control platform K issues a command for circulating water pump B to operate at a certain frequency. The magnitude of the certain frequency is selected according to the principle of being beneficial to the working conditions and the stability of the control system.

[0076] For example, taking a total of 20 positions for an electric regulating valve as an example, if the nth household-end electric regulating valve F... n When the gear is exactly within the 18th gear, the operation control platform K issues a command, and the circulating water pump B maintains its original frequency; if the nth household-end electric regulating valve F n If the gear is lower than gear 17, the operation control platform K issues a command to reduce the operating frequency of circulating water pump B; if the nth household-end electric regulating valve F n When the gear is higher than 19, the operation control platform K issues a command to increase the frequency of the circulating water pump B.

[0077] For example, taking a total of 10 positions for an electric regulating valve as an example, if the nth household-end electric regulating valve F... n When the gear is exactly in gear 9, the control platform K issues a command to keep the circulating water pump B running at its original frequency; if the nth household-end electric regulating valve F n If the gear is lower than gear 9, the operation control platform K issues a command to reduce the operating frequency of circulating water pump B; if the nth household-end electric regulating valve F n When the gear is higher than the 9th gear, the operation control platform K issues a command, and the circulating water pump B increases its operating frequency to a certain level.

[0078] 2.3: Repeat steps 2.2-2.3 at regular intervals to cyclically regulate the flow rate of the secondary heat medium.

[0079] For example, every 10 minutes, the control platform K receives data from the first to the nth client Y1-Y2. nThe room temperature signal and room temperature set range signal emitted by the temperature measuring device are used to repeat steps 2.2-2.3 to further regulate the secondary heat medium flow rate so that the opening of the electric regulating valve at each household end is maintained in the range of 85% to 95% of the full opening, thereby ensuring that the indoor temperature is ultimately maintained within the set value range.

[0080] The above is merely one embodiment of the present invention and is not intended to limit the technical solution. In practice, the above technical solution is also applicable to primary pipeline heating systems. When used in a primary pipeline heating system, the heat exchange station refers to the first heat exchange station of the primary heating system; the electric regulating valve of the primary pipeline refers to the electric regulating valve installed on the primary heat medium pipeline within the first heat exchange station; the circulating water pump refers to the circulating water pump of the primary pipeline within the first heat exchange station; the household-end electric regulating valve refers to the electric regulating valve installed on the primary heat medium pipeline of each secondary heat exchange station; and the household-end temperature measuring device is replaced by the return water temperature measuring device installed on each secondary heat medium return water pipeline. In short, any technical solution obtained without departing from the design concept of the present invention is within the scope of protection, and the specific scope of protection is determined by the scope described in the claims.

Claims

1. A control method for an operating control system based on room temperature control and quantity regulation, characterized in that, The operation control system consists of three parts: an operation control platform, heat exchange station control hardware and software facilities, and client-side control hardware and software facilities; wherein: The operation control platform consists of computer-related hardware and software facilities with data transmission, storage and processing functions. It is used to receive and process relevant signals transmitted from the control hardware and software facilities in the heat exchange station and the client hardware and software control facilities, and output relevant control commands to the relevant hardware and software facilities according to the processing results. The aforementioned heat exchange station control hardware and software facilities include hardware and software facilities capable of realizing the measurement and control of the secondary heat medium supply water temperature and related signal transmission functions, and hardware and software facilities capable of automatically realizing the frequency conversion function of the circulating water pump and related signal transmission functions. The former is used to measure the temperature of the secondary heat medium supply water and transmit the temperature signal to the operation control platform, and to receive and execute relevant instructions from the operation control platform to maintain the supply water temperature at a certain set value or to automatically change it according to a certain predetermined rule; the latter is used to receive and execute relevant instructions from the operation control platform, automatically adjust the operating frequency of the circulating water pump to a certain appropriate value, and at the same time transmit relevant frequency, flow rate, and temperature difference signals to the operation control platform. The aforementioned client-side control hardware and software facilities consist of hardware and software facilities for setting and measuring room temperature and automatically controlling user flow, as well as hardware and software facilities for measuring and transmitting related signals. They are used to set and measure the room temperature of each client, and transmit the room temperature and valve opening signals to the operation control platform, while receiving and executing relevant instructions from the operation control platform. The specific steps of the control method are as follows: using indoor temperature as the target control parameter, circulating flow rate and supply water temperature as active control parameters, and return water temperature as passive control parameter; the operation control platform first independently circulates and controls the secondary heat medium supply water temperature until the system is stable, and then starts the secondary heat medium flow rate control; during the flow rate control process, the opening of the electric regulating valve at the user end is adjusted, the most unfavorable user end with the largest opening is identified, and the frequency of the circulating water pump is adjusted according to the valve position range of the most unfavorable user end to achieve independent circulatory control of the secondary heat medium supply water temperature and flow rate.

2. The control method for the operation control system based on room temperature control and quantity regulation as described in claim 1, characterized in that: The aforementioned heat exchange station control software and hardware facilities include two components: secondary heat medium supply water temperature control software and hardware facilities and circulating water pump frequency conversion control software and hardware facilities. The secondary heat medium supply water temperature control software and hardware facilities include a primary network electric regulating valve, a valve control system and corresponding valve position signals, a secondary network temperature sensor and temperature signal transmission device. The primary network electric regulating valve is installed on the primary heat medium supply or return water pipeline of the heat exchange unit, and the secondary network temperature sensor is installed on the secondary heat medium supply pipeline of the heat exchange unit. The circulating water pump frequency conversion control software and hardware facilities include a circulating water pump frequency converter and corresponding signal transmission device. The circulating water pump frequency converter and corresponding signal transmission device are preferably installed near the circulating water pump. The aforementioned client-side hardware and software control facilities include a client-side indoor temperature setting and measurement device, a corresponding temperature signal transmission device, a client-side electric regulating valve and a corresponding signal transmission device. The client-side indoor temperature measurement device and the corresponding temperature signal transmission device are installed in a designated location in the room, and the client-side electric regulating valve and the corresponding signal transmission device should be installed on the water supply or return pipe at the client-side heating inlet. The aforementioned operation and control platform consists of hardware and software facilities and other auxiliary components that enable signal transmission, data storage, data processing and data output, and is installed inside the heat exchange station of the centralized heating system or in a separate room.

3. The control method for the operation control system based on room temperature control and quantity regulation as described in claim 1 or 2, characterized in that, It comprises two parts: secondary heat medium supply water temperature control and secondary heat medium flow control. Both parts are controlled by the operation and control platform. Upon initial operation, secondary heat medium supply water temperature control is activated first. Once the heating system is running stably, secondary heat medium flow control is activated next. Afterward, the two parts operate independently in a cyclical manner according to their respective intervals. The steps for regulating the temperature of the secondary heat medium water supply are as follows: 1.1: Set the secondary heat medium supply water temperature range on the operation and control platform; 1.2: The operation and control platform receives the measured signal of the secondary heat medium supply water temperature, compares it with the set range value, and outputs the control command of the primary electric regulating valve based on the comparison result. The control command is divided into the following three cases: If the measured temperature of the secondary heat medium supply water is within the set range, a control command is issued to keep the primary electric regulating valve in its current state. If the measured temperature of the secondary heat medium supply water is lower than the lower limit of the set range, a control command is issued to increase the primary electric regulating valve by one level or one step. If the measured temperature of the secondary heat medium supply water is higher than the upper limit of the set range, a control command is issued to decrease the primary electric regulating valve by one level or one step. 1.3: The actuator of the electric regulating valve receives the control command and completes one regulation action; 1.4: Repeat steps 1.2-1.3 at regular intervals to cyclically regulate the secondary heat medium supply water temperature, so that the secondary heat medium supply water temperature is eventually maintained within the set range. The size of each interval is determined based on the principle of facilitating the stability of water supply temperature control and the stability of the regulation system operation. The secondary heat medium flow rate regulation steps are as follows: 2.1: Flow control by adjusting the opening of the user-side electric regulating valve 2.1.1: Acquisition of relevant room temperature signals at the user terminal The operation and control platform receives room temperature setting range signals from all users and room temperature signals from indoor temperature measuring devices; 2.1.2: User-side electric regulating valve control The operation and control platform compares the received measured room temperature value with the respective room temperature set range value, and then sends an opening adjustment command to all household electric regulating valves; the control of each household electric regulating valve is implemented according to the following strategy: If the measured room temperature value received by the operation and control platform for a certain household is lower than the lower limit of the room temperature setting range for that household, the operation and control platform will issue a command to increase the opening of the electric regulating valve of that household by one level or one step. If the measured room temperature value received by the operation and control platform for a certain household is higher than the upper limit of the room temperature setting range for that household, the operation and control platform will issue a command to decrease the opening of the electric regulating valve of that household by one level or one step. If the measured room temperature value received by the operation and control platform at regular intervals is exactly within the room temperature setting range for that household, the operation and control platform will issue a command to keep the electric regulating valve of that household at its original opening. 2.2: Flow control of circulating water pumps operating by frequency converter 2.2.1: Select the most unfavorable end-user electric regulating valve After the control is completed in step 2.1.2, the control platform receives and compares the opening signals of all user-end electric control valves, and selects the user-end electric control valve with the largest opening as the most unfavorable user-end electric control valve. 2.2.2: Setting the frequency adjustment range of the circulating water pump Set a certain range of the opening degree of the most unfavorable end-user electric regulating valve as the frequency regulation range of the circulating water pump; 2.2.3: Frequency control of circulating water pumps If the opening value of the least unfavorable user-end electric regulating valve is lower than the lower limit of the frequency adjustment range of the circulating water pump set in step 2.2.2, the operation and control platform issues a command to reduce the frequency of the circulating water pump; if the opening value of the least unfavorable user-end electric regulating valve is higher than the upper limit of the frequency adjustment range of the circulating water pump set in step 2.2.2, the operation and control platform issues a command to increase the frequency of the circulating water pump; if the opening value of the least unfavorable user-end electric regulating valve is exactly within the frequency adjustment range of the circulating water pump set in step 2.2.2, the operation and control platform issues a command to stabilize the circulating water pump at the current frequency. The magnitude of the "certain frequency" is selected according to the principle of being conducive to the stability of the operating conditions and the stability of the control system. 2.3: Repeat steps 2.1-2.2 at regular intervals to cyclically regulate the flow rate of the secondary heat medium, so that the indoor temperature of all households eventually reaches the set value range. The size of each interval is determined based on the principle of facilitating the stability of indoor temperature control and the stability of the control system operation.

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