A secondary heat supply pipe network balanced time-division temperature-division intelligent heat supply system and control method

Abstract

The application discloses a secondary heat supply pipe network balanced time-division temperature-division wisdom heat supply system and a control method, and belongs to the technical field of heat supply equipment. The system comprises a primary side pipe network, a secondary side pipe network, an outdoor temperature sensor, an indoor temperature sensor and an upper computer. The primary side pipe network and the secondary side pipe network are connected through a heat exchanger and are both provided with a regulation and control device. The regulation and control device is connected with the upper computer. The upper computer controls the regulation and control device according to the data of the outdoor temperature sensor and / or the indoor temperature sensor and in combination with a preset time interval, so as to adjust the water supply temperature and / or the pressure difference of the secondary side pipe network. The application adjusts the heating temperature according to the demand by means of the remote network control of the heating related equipment through the automatic equipment, forms an information platform, and enables the heat supply production and management personnel to realize the heat supply parameter monitoring of the heat supply station and the user through the information platform by means of the handheld mobile terminal, so as to meet the demand of the heat supply management personnel for timely, rapid and comprehensive grasping of the heat network production information.

Description

Technical Field

[0001] This invention relates to the technical field of heating equipment, and in particular to a balanced time-sharing and temperature-controlled intelligent heating system and control method for a two-stage heating network. Background Technology

[0002] Heating equipment is indispensable in the current urban development process. However, some existing heating systems lack automation, requiring manual operation and dedicated personnel for monitoring. Furthermore, due to the cyclical nature of heating equipment, aging issues can occur during periods of non-use, and manual maintenance often fails to detect and address problems promptly. The existing system lacks the ability to coordinate the hydraulic and thermal coupling of primary and secondary pipe networks, making it impossible to achieve precise time-based, zoned, and temperature-based adjustments based on building heating characteristics, resulting in uneven heating and energy waste. Summary of the Invention

[0003] The purpose of this invention is to provide a balanced, time-sharing, and temperature-controlled intelligent heating system and control method for a secondary heating network. By using modern automation and information technology, sensors and remote control execution devices are added to the heating network to improve the heating system, realize remote monitoring and intelligent adjustment of the heating process, ensure efficient and stable operation of the system, and achieve on-demand heating and energy saving.

[0004] To achieve the above objectives, the present invention provides a two-stage heating network balanced time-sharing and temperature-controlled intelligent heating system, comprising a primary side network equipped with primary side control equipment and a secondary side network equipped with secondary side control equipment. The secondary side network is connected to the primary side network through a heat exchanger (7) and supplies heat to the heating area. A host computer is communicatively connected to the primary side control equipment and the secondary side control equipment. The host computer controls the primary side control equipment and / or the secondary side control equipment according to the data from the outdoor temperature sensor and / or the indoor temperature sensor, combined with a preset time interval, to adjust the water supply temperature and / or pressure difference of the secondary side network to achieve heating. The host computer also sets alarm thresholds according to the status of the primary side control equipment and the secondary side control equipment and manual settings.

[0005] Preferably, the control equipment of the primary side pipeline from the water supply end to the return end is arranged in series as follows: temperature sensor one (1), pressure sensor one (2), filter one (3), pressure sensor two (4), heat flow meter (5), heat exchanger (7), electric regulating valve (8), pressure sensor three (9), and temperature sensor two (10).

[0006] Preferably, the control equipment of the secondary side pipeline from the return water end to the supply water end is arranged in series as follows: pressure relief valve (11), water inlet, temperature sensor three (12), pressure sensor four (13), filter two (14), pressure sensor five (15), circulating variable frequency water pump (16), heat exchanger (7), pressure sensor six (17) and temperature sensor four (18); the water inlet is arranged in series as follows: water inlet pump (19), water inlet tank (20), water injection valve (21) and water softening equipment (6), and a water level sensor is installed in the water inlet tank (20).

[0007] Preferably, the heating area includes a water supply pipe and a return pipe, and a plurality of return water regulating valves are installed on the return water pipe according to the heating properties of the building. The return water regulating valves are integrated with temperature sensors. An indoor temperature sensor is installed at each heating location in the heating area. An outdoor temperature sensor is installed outside the heating area.

[0008] Preferably, the control device, indoor temperature sensor, outdoor temperature sensor, and return water regulating valve temperature sensor are all connected to the host computer wirelessly or via wired means, and include at least: a fourth temperature sensor (18) for detecting the secondary side pipe network supply water temperature, a third temperature sensor (12) for detecting the secondary side pipe network return water temperature, an indoor temperature sensor for detecting the temperature in the heating area, and an outdoor temperature sensor for detecting the outdoor temperature.

[0009] A method for balanced, time-based, and temperature-controlled intelligent heating control of a secondary heating network includes the following steps: S1: The host computer collects data from all sensors to form a data platform; S2: Set time intervals according to the needs of the heating area, and divide the time intervals into two modes: normal time period and energy-saving time period; S3: Based on the time interval and sensor data, regulate the temperature and pressure of the primary and secondary piping networks according to the control strategy; S4: The host computer receives data and forms an information platform for users to view. Users set alarm thresholds accordingly. When the sensor data exceeds the threshold, the host computer issues an alarm on the information platform and executes the alarm action.

[0010] Preferably, in step S1, the sensor data includes temperature data, pressure data, and water level data, as detailed below: Temperature data: Temperature sensor 1 is used to detect the inlet water temperature of the primary side pipe network; temperature sensor 2 is used to detect the return water temperature of the primary side pipe network; temperature sensor 3 is used to detect the return water temperature of the secondary side pipe network; temperature sensor 4 is used to detect the outlet water temperature of the secondary side pipe network; return water regulating valve is used to detect the return water temperature of the return water pipe of the corresponding heating site; outdoor temperature sensor is used to detect the outdoor ambient temperature; indoor temperature sensor is used to detect the temperature of the corresponding heating site. Pressure data: Pressure sensor 1 detects the pressure at the inlet of the primary side pipe network; pressure sensor 2 detects the pressure after passing through filter 1; pressure sensor 3 detects the pressure of the primary return water; pressure sensor 4 detects the pressure of the return water in the secondary side pipe network; pressure sensor 5 detects the return water pressure after passing through filter 2; and pressure sensor 6 detects the outlet pressure of the secondary side pipe network. Water level data: A water level sensor installed in the water supply tank detects the water level height in the water supply tank.

[0011] Preferably, in step S2, the process of setting the time interval is as follows: The time interval is divided into two modes: normal period and energy-saving period. During the normal period, each return water regulating valve is adjusted according to the return water temperature to achieve overall heating balance. During the energy-saving period, the temperature of different heating locations in the heating area is adjusted according to the building's heating characteristics to achieve time-based and temperature-based control and reduce heat loss.

[0012] Preferably, in step S3, the temperature control strategy and the pressure control strategy are as follows: Temperature control strategies include: Predictive compensation based on outdoor temperature changes: When the outdoor sensor detects that the outside temperature is higher than the comfort temperature threshold, the secondary water supply temperature is automatically lowered. The outdoor temperature is collected from outdoor temperature sensors or weather forecast data transmission interfaces. Indoor temperature closed-loop control: The opening degree of the return water regulating valve is adjusted by using indoor temperature sensor data from the heating site and return water pipe temperature data detected by the return water regulating valve. Secondary water supply temperature regulation: Within the corresponding time interval, the set value of the secondary water supply temperature is calculated based on the outdoor temperature, and the opening of the primary side electric regulating valve or the working frequency of the secondary side circulating variable frequency water pump is adjusted to change the heating temperature. The impact of time intervals on secondary water supply temperature: By utilizing the different temperature requirements of people at different times, the return water regulating valves of different heating sites can be adjusted. Constant secondary water supply temperature: Based on the set outdoor temperature and secondary water supply temperature, adjust the opening of the primary side electric regulating valve or the working frequency of the secondary side circulating variable frequency water pump to keep the outlet water temperature of the secondary water supply constant at the set value. Secondary average temperature self-learning curve: The set value of the secondary side average temperature is calculated based on the outdoor temperature and combined with historical operating data, and the opening of the primary side electric regulating valve or the secondary side circulating variable frequency water pump is adjusted. Constant secondary average temperature: Based on the set relationship between the outdoor temperature and the secondary average temperature curve, adjust the opening of the primary side electric regulating valve to keep the secondary average temperature constant at the set value. Primary flow and heat curves: Calculate the set value of the primary instantaneous flow or primary instantaneous heat based on the outdoor temperature, and adjust the primary electric regulating valve accordingly; Stress management strategies include: Secondary side supply and return water pressure difference PID control: The speed of the circulating variable frequency water pump is controlled by PID control. The minimum speed of the frequency converter is 20% of the rated speed, and the control deviation is ±0.01MPa. According to the set value of the secondary side supply and return water pressure difference, the speed of the variable frequency circulating pump is adjusted to stabilize the pressure difference value within the required range. When the pressure difference is too low, the primary side electric regulating valve or the circulating variable frequency water pump is shut off. Calculate the set value of the secondary side supply and return water pressure difference, the actual pressure difference value, and the feedback value of the circulation pump frequency based on the pressure data; Secondary side return water pressure stabilization and automatic water replenishment control: A water replenishment pump is used to maintain a constant secondary side return water pressure. The host computer controls the speed of the water replenishment pump through frequency conversion speed regulation based on the feedback from the pressure sensor. At the same time, the water replenishment valve is linked to the water level sensor of the water replenishment tank to realize automatic water replenishment and low water level protection.

[0013] Preferably, in step S4, the alarm process is as follows: Set the primary side return water temperature threshold, secondary side supply water pressure threshold, secondary side supply water temperature upper limit, secondary side return water pressure threshold, secondary side supply and return water pressure difference threshold, and water level range of the makeup water tank; based on the set thresholds, the corresponding temperature sensor and pressure sensor are compared, and when the detected value exceeds the threshold, the host computer will issue an alarm. The specific alarm actions performed are as follows: when a temperature alarm is triggered, the opening of the primary side electric regulating valve or the speed of the secondary side circulating water pump is controlled to adjust the temperature of the heat exchanger on the secondary side, thereby achieving temperature adjustment. When the pressure data alarm is triggered, adjust the opening of the electric regulating valve to adjust the pressure of the primary side pipeline, adjust the speed of the circulating variable frequency pump and the water supply pump, and adjust the opening of the pressure relief valve to adjust the pressure of the secondary side pipeline. When the water level alarm is triggered, adjust the opening of the water injection valve to inject water into the water supply tank until the water level returns to the normal range.

[0014] Therefore, the present invention employs the above-mentioned balanced time-sharing and temperature-controlled intelligent heating system and control method for a secondary heating network. Compared with the prior art, the present invention has the following beneficial effects: 1. Solve the hydraulic-thermal coupling problem: By setting pressure and temperature sensors on the primary and secondary sides respectively, the host computer can decouple the hydraulic and thermal coupling relationship between the primary and secondary pipe networks, avoid temperature oscillation caused by traditional single-loop control, and achieve coordinated and stable control of supply and return water pressure difference and supply water temperature.

[0015] 2. Realize time-sharing and temperature-controlled intelligent heating: By preset normal time periods and energy-saving time periods, and combined with indoor temperature feedback from different heating areas, the host computer can independently control the return water regulating valves on each branch return water pipeline, realizing differentiated and time-sharing temperature adjustment for different buildings (such as office buildings, residences, and schools), avoiding "one-size-fits-all" heating and significantly reducing heat consumption.

[0016] 3. Possesses self-optimization and unattended operation capabilities: Based on multiple strategies such as outdoor temperature compensation, indoor temperature control, and average temperature curve, the system automatically calculates and adjusts the opening of the primary side electric regulating valve or the frequency of the secondary side circulating variable frequency water pump. It also has dynamic threshold alarm and linkage protection functions, which can realize the safe, energy-saving, and stable operation of the heat exchange station under long-term unattended operation.

[0017] Therefore, the present invention adopts the above-mentioned intelligent heating system and control method for balanced time-sharing and temperature-divided secondary heating network. Through modern construction, sensors and remotely controlled water pumps and valves are added to the heating equipment to improve the heating equipment, realize the monitoring and adjustment of the heating equipment, and ensure the normal operation of the heating equipment.

[0018] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0019] Figure 1 This is a diagram of the system architecture of the present invention in a heat exchange station; Figure 2 This is a diagram showing the architecture of the system of the present invention in the heating area; Reference numerals in the attached diagram: 1. Temperature sensor 1; 2. Pressure sensor 1; 3. Filter 1; 4. Pressure sensor 2; 5. Heat flow meter; 6. Water softening equipment; 7. Heat exchanger; 8. Electric regulating valve; 9. Pressure sensor 3; 10. Temperature sensor 2; 11. Pressure relief valve; 12. Temperature sensor 3; 13. Pressure sensor 4; 14. Filter 2; 15. Pressure sensor 5; 16. Circulating variable frequency water pump; 17. Pressure sensor 6; 18. Temperature sensor 4; 19. Makeup water pump; 20. Makeup water tank; 21. Water injection valve. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Specific model specifications need to be selected and determined according to the actual specifications of the device, etc. The specific selection calculation method adopts existing technology in the art, and therefore will not be described in detail.

[0021] Example like Figure 1 and Figure 2 As shown, this invention provides a two-stage heating network balanced time-sharing and temperature-controlled intelligent heating system. The main control object is the heat exchange station of the secondary side network, specifically including the primary side network, the secondary side network, an outdoor temperature sensor, and a host computer. The primary side network and the secondary side network are connected through a heat exchanger 7 to achieve heat exchange. Control devices are installed on both the primary side network and the secondary side network. The control devices are connected to the host computer for convenient network monitoring and management. The water supply end and the water return end of the secondary side network are connected to the heating area. Based on the status of the primary control devices and the secondary control devices and manual settings, the host computer sets alarm thresholds.

[0022] The primary side pipeline is equipped with the following components in sequence from the water supply end to the water return end: temperature sensor 1, pressure sensor 2, filter 3, pressure sensor 4, heat flow meter 5, heat exchanger 7, electric regulating valve 8, pressure sensor 3, and temperature sensor 10. The heat flow meter detects the heat and flow rate passing through it. The heat unit is GJ / h, and the flow rate unit is cubic meters.

[0023] The secondary side pipeline, from the return water end to the supply water end, is sequentially equipped with a pressure relief valve 11, a water inlet, a temperature sensor 3 12, a pressure sensor 4 13, a filter 2 14, a pressure sensor 5 15, a circulating variable frequency water pump 16, a heat exchanger 7, a pressure sensor 6 17, and a temperature sensor 4 18. From the water inlet, a water supply pump 19, a water supply tank 20, a water injection valve 21, and a water softening device 6 are sequentially installed. A water level sensor is installed in the water supply tank 20. The heating area includes supply and return water pipes. Several return water regulating valves are installed on the return water pipe according to the building's heating characteristics, and each return water regulating valve integrates a temperature sensor. Indoor temperature sensors are installed at each heating location within the heating area, and outdoor temperature sensors are installed outside the heating area.

[0024] All sensors and actuators are connected to the host computer via wireless or wired means. The sensors include temperature sensors, pressure sensors, heat flow meters 5, and water level sensors. The devices include electric regulating valves 8, circulating variable frequency water pumps 16, water replenishment pumps 19, return water regulating valves, pressure relief valves 11, and water injection valves 21.

[0025] A method for balanced, time-based, and temperature-controlled intelligent heating control of a secondary heating network includes the following steps: S1: The host computer collects data from the sensors to form a data platform. The sensor data includes temperature, pressure, and water level data. Temperature data: Temperature sensor 1 is used to detect the inlet water temperature of the primary side pipe network; temperature sensor 2 detects the return water temperature of the primary side pipe network; temperature sensor 3 detects the return water temperature of the secondary side pipe network; temperature sensor 4 detects the outlet water temperature of the secondary side pipe network; the return water regulating valve detects the return water temperature of the return water pipe of the corresponding heating site; the outdoor temperature sensor detects the outdoor ambient temperature; and the indoor temperature sensor detects the temperature of the corresponding heating site.

[0026] Pressure data: Pressure sensor 1 is used to detect the pressure at the inlet of the primary side pipe network; pressure sensor 2 detects the pressure after passing through filter 1; pressure sensor 3 detects the pressure of the primary return water; pressure sensor 4 detects the pressure of the return water in the secondary side pipe network; pressure sensor 5 detects the return water pressure after passing through filter 2; and pressure sensor 6 detects the outlet water pressure of the secondary side pipe network.

[0027] Water level data: A water level sensor installed in the water supply tank detects the water level height inside the tank.

[0028] S2: Set time intervals according to the needs of the heating area. Divide the time intervals into two modes: normal period and energy-saving period. During the normal period, each return water regulating valve is adjusted according to the return water temperature to achieve overall heating. During the energy-saving period, the temperature of different heating locations in the heating area is adjusted according to the building's heat consumption characteristics to achieve time-based and temperature-based control, thus saving heat.

[0029] S3: Based on the time interval and sensor data, regulate the temperature and pressure of the heating pipeline according to the control strategy. The temperature control strategy includes: Predictive compensation based on outdoor temperature changes: When the outdoor sensor detects that the outside temperature is higher than the comfort temperature threshold, the secondary water supply temperature is automatically lowered. The outdoor temperature is collected from outdoor temperature sensors or weather forecast data transmission interfaces.

[0030] Indoor temperature closed-loop control: By using indoor temperature sensor data from the heating site and return water pipe temperature data detected by the return water regulating valve, the opening degree of the return water regulating valve is adjusted to change the indoor heating temperature.

[0031] Secondary water supply temperature regulation: Within the corresponding time interval, the set value of the secondary water supply temperature is calculated based on the outdoor temperature, and the opening degree of the primary side electric regulating valve or the working frequency of the secondary side circulating variable frequency water pump is adjusted.

[0032] The impact of time intervals on secondary water supply temperature: By utilizing the different temperature requirements of people at different times, the return water regulating valves of different heating sites can be adjusted.

[0033] Constant secondary water supply temperature: Based on the set outdoor temperature and secondary water supply temperature, adjust the opening of the primary side electric regulating valve or the working frequency of the secondary side circulating variable frequency water pump to keep the outlet water temperature of the secondary water supply constant at the set value.

[0034] Secondary average temperature self-learning curve: The set value of the secondary side average temperature is calculated based on the outdoor temperature and combined with historical operating data, and the opening of the primary side electric regulating valve or the secondary side circulating variable frequency water pump is adjusted.

[0035] Constant secondary average temperature: Based on the set relationship between the outdoor temperature and the secondary average temperature curve, adjust the opening of the primary side electric regulating valve to keep the secondary average temperature constant at the set value.

[0036] Primary side flow and heat curve: Calculate the set value of the primary side instantaneous flow or the primary side instantaneous heat based on the outdoor temperature, and adjust the primary side electric regulating valve.

[0037] Suppression and control strategies include: Secondary side supply and return water pressure difference PID control: The speed of the circulating variable frequency water pump is adjusted by using a PID (proportional-integral-derivative) control algorithm. The minimum speed of the frequency converter is 20% of the rated speed, and the control deviation is ±0.01MPa. Based on the set value of the secondary side supply and return water pressure difference, the speed of the variable frequency circulating pump is adjusted to stabilize the pressure difference within the required range. When the pressure difference is detected to be continuously lower than the safety threshold, the system will automatically shut down the primary side electric regulating valve or the circulating variable frequency water pump to prevent system idling damage.

[0038] Secondary side return water pressure stabilization and automatic water replenishment control: A water replenishment pump is used to maintain a constant secondary side return water pressure. The host computer controls the speed of the water replenishment pump through frequency conversion speed regulation based on the feedback from the pressure sensor. At the same time, the water replenishment valve is linked to the water level sensor of the water replenishment tank to realize automatic water replenishment and low water level protection.

[0039] S4: The host computer receives data and forms an information platform for users to view. Users set alarm thresholds accordingly. When the sensor data exceeds the threshold, the host computer issues an alarm on the information platform and executes the alarm action.

[0040] The alarm process is as follows: Set the primary side return water temperature threshold, secondary side supply water pressure threshold, secondary side supply water temperature upper limit, secondary side return water pressure threshold, secondary side supply and return water pressure difference threshold, and water level range in the makeup water tank. Based on the set thresholds, the corresponding temperature and pressure sensors are compared. When the detected value exceeds the threshold, the host computer issues an alarm.

[0041] The host computer dynamically adjusts the alarm threshold based on the statistical distribution of historical normal operation data and manual settings to avoid frequent false alarms.

[0042] The specific alarm actions performed are as follows: When a temperature alarm is triggered, the opening of the primary side electric regulating valve or the speed of the secondary side circulating water pump is controlled to adjust the temperature of the heat exchanger on the secondary side, thereby achieving temperature regulation.

[0043] When the pressure data alarm is triggered, adjust the opening of the electric regulating valve to adjust the pressure in the primary side pipeline, adjust the speed of the circulating variable frequency pump and the water supply pump, and adjust the opening of the pressure relief valve to adjust the pressure in the secondary side pipeline.

[0044] When the water level alarm is triggered, adjust the opening of the water injection valve to inject water into the water supply tank until the water level returns to the normal range.

[0045] Therefore, the present invention adopts the above-mentioned intelligent heating system and control method for balanced time-sharing and temperature-divided secondary heating network. Through modern construction, sensors and remotely controlled water pumps and valves are added to the heating equipment to improve the heating equipment, realize the monitoring and adjustment of the heating equipment, and ensure the normal operation of the heating equipment.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A secondary heat supply network balanced time-division temperature-division intelligent heat supply system, characterized in that, The system includes a primary side pipeline network equipped with a primary side control device and a secondary side pipeline network equipped with a secondary side control device. The secondary side pipeline network is connected to the primary side pipeline network through a heat exchanger (7) and supplies heat to the heating area. The host computer is communicatively connected to the primary side control device and the secondary side control device. Based on the data from the outdoor temperature sensor and / or the indoor temperature sensor, and combined with a preset time interval, the host computer controls the primary side control device and / or the secondary side control device to adjust the water supply temperature and / or pressure difference of the secondary side pipeline network to achieve heating. The host computer also sets alarm thresholds according to the status of the primary side control device and the secondary side control device and the manual settings.

2. The two-stage heat supply network balance time-division temperature-division intelligent heat supply system according to claim 1, characterized in that: The control equipment of the primary side pipeline from the water supply end to the return end is connected in series as follows: temperature sensor 1 (1), pressure sensor 1 (2), filter 1 (3), pressure sensor 2 (4), heat flow meter (5), heat exchanger (7), electric regulating valve (8), pressure sensor 3 (9), and temperature sensor 2 (10).

3. The two-stage heat supply network balance time-division temperature-division intelligent heat supply system according to claim 2, characterized in that: The control equipment of the secondary side pipeline from the return water end to the supply water end is arranged in series as follows: pressure relief valve (11), water inlet, temperature sensor three (12), pressure sensor four (13), filter two (14), pressure sensor five (15), circulating variable frequency water pump (16), heat exchanger (7), pressure sensor six (17) and temperature sensor four (18); the water inlet is arranged in series as follows: water pump (19), water tank (20), water injection valve (21) and water softening equipment (6), and a water level sensor is installed in the water tank (20).

4. The secondary heating network balance time-division temperature-division wisdom heating system according to claim 3, characterized in that: The heating area includes a water supply pipe and a return water pipe. Several return water regulating valves are installed on the return water pipe according to the building's heating properties. Each return water regulating valve integrates a temperature sensor. An indoor temperature sensor is installed at each heating location within the heating area. An outdoor temperature sensor is installed outside the heating area.

5. The secondary heating network balance time-division temperature-division wisdom heating system according to claim 4, characterized in that: The control equipment, indoor temperature sensor, outdoor temperature sensor, and return water regulating valve temperature sensor are all connected to the host computer wirelessly or via wired means. They include at least: a fourth temperature sensor (18) for detecting the temperature of the secondary side pipe network supply water, a third temperature sensor (12) for detecting the temperature of the secondary side pipe network return water, an indoor temperature sensor for detecting the temperature in the heating area, and an outdoor temperature sensor for detecting the outdoor temperature.

6. A method for balanced time-sharing and temperature-controlled intelligent heating control of a secondary heating network, comprising the balanced time-sharing and temperature-controlled intelligent heating system of any one of claims 1-5, characterized in that, Includes the following steps: S1: The host computer collects data from all sensors to form a data platform; S2: Set time intervals according to the needs of the heating area, and divide the time intervals into two modes: normal time period and energy-saving time period; S3: Based on the time interval and sensor data, regulate the temperature and pressure of the primary and secondary piping networks according to the control strategy; S4: The host computer receives data and forms an information platform for users to view. Users set alarm thresholds accordingly. When the sensor data exceeds the threshold, the host computer issues an alarm on the information platform and executes the alarm action.

7. The method for balanced, time-sharing, and temperature-controlled intelligent heating control of a secondary heating network according to claim 6, characterized in that: In step S1, the sensor data includes temperature data, pressure data, and water level data, as detailed below: Temperature data: Temperature sensor 1 is used to detect the inlet water temperature of the primary side pipe network; temperature sensor 2 is used to detect the return water temperature of the primary side pipe network; temperature sensor 3 is used to detect the return water temperature of the secondary side pipe network; temperature sensor 4 is used to detect the outlet water temperature of the secondary side pipe network; return water regulating valve is used to detect the return water temperature of the return water pipe of the corresponding heating site; outdoor temperature sensor is used to detect the outdoor ambient temperature; indoor temperature sensor is used to detect the temperature of the corresponding heating site. Pressure data: Pressure sensor 1 detects the pressure at the inlet of the primary side pipe network; pressure sensor 2 detects the pressure after passing through filter 1; pressure sensor 3 detects the pressure of the primary return water; pressure sensor 4 detects the pressure of the return water in the secondary side pipe network; pressure sensor 5 detects the return water pressure after passing through filter 2; and pressure sensor 6 detects the outlet pressure of the secondary side pipe network. Water level data: A water level sensor installed in the water supply tank detects the water level height in the water supply tank.

8. The secondary heating network balance time-division temperature-division wisdom heating control method according to claim 6, characterized in that: In step S2, the process of setting the time interval is as follows: The time interval is divided into two modes: normal period and energy-saving period. During the normal period, each return water regulating valve is adjusted according to the return water temperature to achieve overall heating balance. During the energy-saving period, the temperature of different heating locations in the heating area is adjusted according to the building's heating characteristics to achieve time-based and temperature-based control and reduce heat loss.

9. The secondary heating network balance time-division temperature-division wisdom heating control method according to claim 6, characterized in that: In step S3, the temperature control strategy and the pressure control strategy are as follows: Temperature control strategies include: Predictive compensation based on outdoor temperature changes: When the outdoor sensor detects that the outside temperature is higher than the comfort temperature threshold, the secondary water supply temperature is automatically lowered. The outdoor temperature is collected from outdoor temperature sensors or weather forecast data transmission interfaces. Indoor temperature closed-loop control: Adjust the opening degree of the return water regulating valve by using indoor temperature sensor data from the heating site and return water pipe temperature data detected by the return water regulating valve. Secondary water supply temperature regulation: Within the corresponding time interval, the set value of the secondary water supply temperature is calculated based on the outdoor temperature, and the opening of the primary side electric regulating valve or the working frequency of the secondary side circulating variable frequency water pump is adjusted to change the heating temperature. The impact of time intervals on secondary water supply temperature: By utilizing the different temperature requirements of people at different times, the return water regulating valves of different heating sites can be adjusted. Constant secondary water supply temperature: Based on the set outdoor temperature and secondary water supply temperature, adjust the opening of the primary side electric regulating valve or the working frequency of the secondary side circulating variable frequency water pump to keep the outlet water temperature of the secondary water supply constant at the set value. Secondary average temperature self-learning curve: The set value of the secondary side average temperature is calculated based on the outdoor temperature and combined with historical operating data, and the opening of the primary side electric regulating valve or the secondary side circulating variable frequency water pump is adjusted. Constant secondary average temperature: Based on the set relationship between the outdoor temperature and the secondary average temperature curve, adjust the opening of the primary side electric regulating valve to keep the secondary average temperature constant at the set value. Primary side flow rate and heat curve: Calculate the set value of the primary side instantaneous flow rate or the primary side instantaneous heat based on the outdoor temperature, and adjust the primary side electric regulating valve; Stress management strategies include: Secondary side supply and return water pressure difference PID control: The speed of the circulating variable frequency water pump is controlled by PID control. The minimum speed of the frequency converter is 20% of the rated speed, and the control deviation is ±0.01MPa. According to the set value of the secondary side supply and return water pressure difference, the speed of the variable frequency circulating pump is adjusted to stabilize the pressure difference value within the required range. When the pressure difference is too low, the primary side electric regulating valve or the circulating variable frequency water pump is shut off. Calculate the set value of the secondary side supply and return water pressure difference, the actual pressure difference value, and the feedback value of the circulation pump frequency based on the pressure data; Secondary side return water pressure stabilization and automatic water replenishment control: A water replenishment pump is used to maintain a constant secondary side return water pressure. The host computer controls the speed of the water replenishment pump through frequency conversion speed regulation based on the feedback from the pressure sensor. At the same time, the water replenishment valve is linked to the water level sensor of the water replenishment tank to realize automatic water replenishment and low water level protection.

10. The secondary heating network balance time-temperature intelligent heating control method according to claim 6, characterized in that: In step S4, the alarm process is as follows: Set the primary side return water temperature threshold, secondary side supply water pressure threshold, secondary side supply water temperature upper limit, secondary side return water pressure threshold, secondary side supply and return water pressure difference threshold, and water level range of the makeup water tank; based on the set thresholds, the corresponding temperature sensor and pressure sensor are compared, and when the detected value exceeds the threshold, the host computer will issue an alarm. The specific alarm actions performed are as follows: when a temperature alarm is triggered, the opening of the primary side electric regulating valve or the speed of the secondary side circulating water pump is controlled to adjust the temperature of the heat exchanger on the secondary side, thereby achieving temperature adjustment. When the pressure data alarm is triggered, adjust the opening of the electric regulating valve to adjust the pressure of the primary side pipeline, adjust the speed of the circulating variable frequency pump and the water supply pump, and adjust the opening of the pressure relief valve to adjust the pressure of the secondary side pipeline. When the water level alarm is triggered, adjust the opening of the water injection valve to inject water into the water supply tank until the water level returns to the normal range.

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