An air conditioning control system and method for a platinum channel environment

Abstract

This invention discloses an air conditioning control system and method for a platinum channel environment, belonging to the technical field of TFT-LCD substrate glass production control systems. The system involves setting the status values ​​of a sensor group via a host computer, using the sensor group to monitor the temperature, humidity, pressure, and differential pressure within the platinum channel or air conditioning duct, and a wind measurement group to monitor the airflow within the air conditioning duct. The controller receives the data monitored by the sensor group and the wind measurement group, and the control and adjustment group adjusts the temperature, humidity, pressure, and differential pressure within the platinum channel or air conditioning duct. Finally, the received data is transmitted to the slave computer to complete real-time control of the air conditioning. The controller can directly perform control. This system has good real-time performance, high reliability, strong control capability, strong adaptability, and safe and stable operation. It can meet the stringent process requirements of the platinum channel in glass substrate production and has high application value.

Description

Technical Field

[0001] This invention relates to the field of TFT-LCD substrate glass production control system technology, specifically to an air conditioning control system and method for a platinum channel environment. Background Technology

[0002] During the production of glass substrates, the temperature, humidity, dew point, and pressure difference within the platinum channel are subject to strict control. If parameters such as temperature, humidity, dew point, or pressure difference exceed the limits, the quality of the molten glass will be affected, leading to a decrease in the yield rate of the forming process. If the above process parameters are severely and continuously exceeded for a long time, it may cause major production accidents such as loss of control of the molten glass flow in the platinum channel.

[0003] Currently, air conditioning control systems employ constant temperature and humidity control methods. These methods feed room temperature and humidity signals back to the control unit, which then processes the data and controls the actuators for chilled water, hot water, and steam to gradually bring the room's temperature and humidity values ​​closer to the setpoints. The entire control process is achieved through PID regulation. However, existing air conditioning control methods have limited PID regulation capabilities, making them unsuitable for controlling complex processes and failing to meet the stringent process requirements within the platinum channel.

[0004] It is evident that the existing air conditioning control system has limited adjustment capabilities, cannot control complex processes, and cannot meet the process parameter standards and circulating cooling water control requirements within the platinum channel. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides an air conditioning control system and method for a platinum channel environment. This system and method have strong adjustment capabilities, can control complex processes, and can meet the process parameter standards and circulating cooling water control requirements within the platinum channel.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An air conditioning control system for a platinum channel environment includes a host computer, a sensor group, a wind measurement group, a controller, a regulating group, and a slave computer;

[0008] The host computer is connected to the sensor group, and the sensor group, wind measurement group, adjustment group and slave computer are respectively connected to the controller;

[0009] The host computer is used to monitor and set the status values ​​of the sensor group;

[0010] The sensor array is used to monitor the temperature, humidity, pressure, and differential pressure within the platinum channel or the air conditioning duct.

[0011] The wind measurement group is used to monitor the airflow rate in the air conditioning ducts;

[0012] The controller is used to receive data monitored by the sensor group and the wind measurement group, control the adjustment group, and transmit the received data to the lower-level machine;

[0013] The regulating group is used to regulate the temperature, humidity, pressure and pressure difference within the platinum channel or the air conditioning duct;

[0014] The lower-level machine is used to receive data transmitted by the controller.

[0015] Furthermore, the sensor group includes a dew point temperature sensor, a supply air duct temperature and humidity sensor, a return air duct temperature sensor, an outdoor differential pressure sensor, and an annealing differential pressure sensor.

[0016] The dew point temperature sensor, outdoor differential pressure sensor, and annealing differential pressure sensor are all installed in the platinum channel; the air supply duct temperature and humidity sensor is installed in the air supply duct of the air conditioner, and the return air duct temperature sensor is installed in the return air duct of the air conditioner.

[0017] The input terminals of the dew point temperature sensor, the supply air duct temperature and humidity sensor, the return air duct temperature sensor, the outdoor differential pressure sensor, and the annealing differential pressure sensor are respectively connected to the host computer, and their output terminals are respectively connected to the controller.

[0018] Furthermore, the sensor group also includes an air supply duct pressure transmitter, which is installed inside the air supply duct of the air conditioner and is connected to the host computer and the controller respectively.

[0019] Furthermore, the input terminal of the controller is connected to the air supply duct pressure transmitter, and the output terminal of the controller is connected to a motor frequency converter.

[0020] Furthermore, the sensor group also includes a leakage air velocity sensor, which is located between the platinum channel and the annealing zone, and is connected to the controller.

[0021] Furthermore, the regulating group includes a steam regulating valve, a cooling water pipeline electric regulating valve, and a fresh air pipeline electric regulating valve;

[0022] The steam regulating valve is installed on the steam pipe, the cooling water pipe electric regulating valve is installed on the cooling water pipe, and the fresh air pipe electric regulating valve is installed on the fresh air pipe.

[0023] The steam regulating valve, the cooling water pipeline electric regulating valve, and the fresh air pipeline electric regulating valve are respectively connected to the controller.

[0024] Furthermore, the regulating group also includes a chilled water return pipe regulating valve, which is installed on the chilled water return pipe. The surface cooler in the air conditioner is connected to a heat exchanger, and the chilled water return pipe regulating valve is connected to the controller.

[0025] Furthermore, the input side of the heat exchanger is connected to the chilled water return pipe.

[0026] Furthermore, the wind measurement group includes a supply air volume measuring instrument, a return air volume measuring instrument, and a fresh air volume measuring instrument;

[0027] The supply air volume measuring instrument is installed on the supply air duct, the return air volume measuring instrument is installed on the return air duct, and the fresh air volume measuring instrument is installed on the fresh air duct.

[0028] The supply air volume measuring instrument, return air volume measuring instrument, and fresh air volume measuring instrument are respectively connected to the controller.

[0029] An air conditioning control method for a platinum channel environment, based on the aforementioned air conditioning control system for a platinum channel environment, includes the following steps:

[0030] The host computer monitors and sets the status values ​​of the sensor group. The sensor group monitors the temperature, humidity, pressure and differential pressure in the platinum channel or air conditioning duct. The wind measurement group monitors the air flow in the air conditioning duct. The controller receives the data monitored by the sensor group and the wind measurement group. The control and adjustment group adjusts the temperature, humidity, pressure and differential pressure in the platinum channel or air conditioning duct and transmits the received data to the slave computer.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] This invention provides an air conditioning control system for a platinum channel environment. A host computer monitors and sets the status values ​​of a sensor group. The sensor group monitors the temperature, humidity, pressure, and differential pressure within the platinum channel or air conditioning duct. An airflow measurement group monitors the airflow within the air conditioning duct. The controller receives the data from the sensor group and the airflow measurement group, and the control and adjustment group adjusts the temperature, humidity, pressure, and differential pressure within the platinum channel or air conditioning duct. Finally, the received data is transmitted to a lower-level computer to complete real-time control of the air conditioning. The controller can directly perform control. This system has good real-time performance, high reliability, strong control capability, strong adaptability, and safe and stable operation. It can meet the stringent process requirements of platinum channels in glass substrate production and has high application value.

[0033] Preferably, the sensor group of the present invention employs a dew point temperature sensor, an air supply duct temperature and humidity sensor, a return air duct temperature sensor, an outdoor differential pressure sensor, and an annealing differential pressure sensor; the regulating group employs a steam regulating valve, a cooling water pipe electric regulating valve, and a fresh air duct electric regulating valve; the controller controls the steam regulating valve to regulate the temperature and humidity corresponding to the dew point temperature sensor and the air supply duct temperature and humidity sensor; controls the cooling water pipe electric regulating valve to regulate the temperature corresponding to the return air duct temperature sensor; and controls the fresh air duct electric regulating valve to regulate the differential pressure corresponding to the outdoor differential pressure sensor and the annealing differential pressure sensor; thus, automatic control of the dew point, temperature, humidity, and differential pressure process parameters in the platinum channel during glass substrate production can be achieved, while automatic control of the circulating cooling water is also realized.

[0034] More preferably, the sensor group of the present invention is further provided with a duct pressure transmitter, and the speed of the fan is adjusted by adjusting the motor frequency converter to realize the setting of the air supply pressure state value.

[0035] More preferably, the regulating group of the present invention is also equipped with a chilled water return pipe regulating valve, and a heat exchanger is configured in the surface cooler. By regulating the chilled water return pipe regulating valve, the cooling water is automatically reduced to a set value range, and then supplied to the surface cooler by the circulating water pump. After passing through the air conditioning cooling water pipe electric regulating valve, it returns to the circulating water pool and is reused by the heat exchanger. In this way, the safety performance of the air conditioning cooling system is improved.

[0036] Preferably, the air measurement group of the present invention uses a supply air volume measuring instrument, a return air volume measuring instrument, and a fresh air volume measuring instrument. The above-mentioned air volume measuring instruments are connected to the controller. In this way, the air volume in the corresponding duct can be monitored in real time through the lower computer, ensuring that the air conditioner operates stably in a certain state and reducing the impact of sudden changes in channel control parameters on production.

[0037] Preferably, the air leakage velocity sensor installed at the air leakage point from the platinum channel to the annealing zone (i.e., between the platinum channel and the annealing zone) in this invention can provide airflow parameters to the manufacturing department in a timely and accurate manner through the lower-level computer, thereby improving the production quality of the glass substrate.

[0038] The present invention also provides an air conditioning control method for a platinum channel environment. Based on the above-mentioned air conditioning control system for a platinum channel environment, this method can realize the automatic control of process parameters such as dew point, temperature, humidity, and pressure difference in the platinum channel during glass substrate production, as well as the automatic control of circulating cooling water. This method is simple, feasible, and easy to promote. Attached Figure Description

[0039] Figure 1 A structural block diagram of an air conditioning control system for a platinum channel environment provided in an embodiment of the present invention;

[0040] Figure 2A control principle diagram of an air conditioning control system for a platinum channel environment provided in an embodiment of the present invention;

[0041] Figure 3 A flowchart of an air conditioning control method for a platinum channel environment provided in an embodiment of the present invention.

[0042] Figure label:

[0043] 1 is the controller, 2 is the dew point temperature sensor, 3 is the supply air duct temperature and humidity sensor, 4 is the return air duct temperature sensor, 5 is the outdoor differential pressure sensor, 6 is the annealing differential pressure sensor, 7 is the steam regulating valve, 8 is the cooling water pipeline electric regulating valve, 9 is the chilled water return pipeline regulating valve, 10 is the fresh air duct electric regulating valve, 11 is the supply air duct pressure transmitter, 12 is the supply air volume measuring instrument, 13 is the return air volume measuring instrument, 14 is the fresh air volume measuring instrument, 15 is the air leakage velocity sensor, 16 is the fan, 17 is the air conditioner, 18 is the surface cooler, 19 is the heat exchanger, 20 is the platinum channel, and 21 is the annealing zone. Detailed Implementation

[0044] This invention provides an air conditioning control system for a platinum channel environment, comprising a host computer, a sensor group, a wind measurement group, a controller 1, an adjustment group, and a slave computer;

[0045] The host computer is connected to the sensor group, and the sensor group, wind measurement group, adjustment group and slave computer are respectively connected to the controller 1;

[0046] The host computer is used to monitor and set the status values ​​of the sensor group;

[0047] The sensor array is used to monitor the temperature, humidity, pressure and differential pressure within the pipes of the platinum channel 20 or the air conditioner 17;

[0048] The sensor group includes a dew point temperature sensor 2, an air supply duct temperature and humidity sensor 3, a return air duct temperature sensor 4, an outdoor differential pressure sensor 5, an annealing differential pressure sensor 6, and an air supply duct pressure transmitter 11.

[0049] The dew point temperature sensor 2, the outdoor differential pressure sensor 5, and the annealing differential pressure sensor 6 are all installed in the platinum channel 20; the air supply duct temperature and humidity sensor 3 is installed in the air supply duct of the air conditioner 17, and the return air duct temperature sensor 4 is installed in the return air duct of the air conditioner 17.

[0050] The input terminals of the dew point temperature sensor 2, the supply air duct temperature and humidity sensor 3, the return air duct temperature sensor 4, the outdoor differential pressure sensor 5, and the annealing differential pressure sensor 6 are respectively connected to the host computer, and their output terminals are respectively connected to the controller 1.

[0051] The air supply duct pressure transmitter 11 is installed inside the air supply duct. The air supply duct pressure transmitter 11 is connected to the host computer and the controller 1 respectively. The input terminal of the controller 1 is connected to the air supply duct pressure transmitter 11, and the output terminal of the controller 1 is connected to a motor frequency converter.

[0052] The sensor group also includes an air leakage velocity sensor 15, which is located between the platinum channel 20 and the annealing zone 21 and is connected to the controller 1.

[0053] The air measurement group is used to monitor the airflow in the duct of the air conditioner 17; the air measurement group includes a supply air volume meter 12, a return air volume meter 13, and a fresh air volume meter 14; the supply air volume meter 12 is installed on the supply air duct, the return air volume meter 13 is installed on the return air duct, and the fresh air volume meter 14 is installed on the fresh air duct; the supply air volume meter 12, the return air volume meter 13, and the fresh air volume meter 14 are respectively connected to the controller 1.

[0054] The controller 1 is used to receive data monitored by the sensor group and the wind measurement group, control the adjustment group, and transmit the received data to the lower-level machine;

[0055] The regulating group is used to regulate the temperature, humidity, pressure, and differential pressure within the pipes of the platinum channel 20 or the air conditioner 17; the regulating group includes a steam regulating valve 7, a cooling water pipe electric regulating valve 8, and a fresh air pipe electric regulating valve 10; the steam regulating valve 7 is installed on the steam pipe, the cooling water pipe electric regulating valve 8 is installed on the cooling water pipe, and the fresh air pipe electric regulating valve 10 is installed on the fresh air pipe; the steam regulating valve 7, the cooling water pipe electric regulating valve 8, and the fresh air pipe electric regulating valve 10 are respectively connected to the controller 1.

[0056] The regulating group also includes a chilled water return pipe regulating valve 9, which is installed on the chilled water return pipe. The surface cooler 18 in the air conditioner 17 is connected to a heat exchanger 19. The chilled water return pipe regulating valve 9 is connected to the controller 1. The input side of the heat exchanger 19 is connected to the chilled water return pipe.

[0057] The lower-level machine is used to receive data transmitted by the controller 1.

[0058] It should be noted that the aforementioned air supply duct, return air duct, fresh air duct, steam duct, cooling water duct, and chilled water return duct all belong to the air conditioning 17 duct.

[0059] The present invention also provides an air conditioning control method for a platinum channel environment, which, based on the above-mentioned air conditioning control system for a platinum channel environment, includes the following steps:

[0060] The host computer monitors and sets the status values ​​of the sensor group. The sensor group monitors the temperature, humidity, pressure and differential pressure in the pipe of the platinum channel 20 or the air conditioner 17. The wind measurement group monitors the air flow rate in the pipe of the air conditioner 17. The controller 1 receives the data monitored by the sensor group and the wind measurement group. The control and adjustment group adjusts the temperature, humidity, pressure and differential pressure in the pipe of the platinum channel 20 or the air conditioner 17 and transmits the received data to the lower computer.

[0061] Example

[0062] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0063] like Figure 1 As shown, the present invention provides an air conditioning control system for a platinum channel environment, comprising a controller 1, a sensor group connected to the input end of the controller 1, and an adjustment group connected to the output end; the sensor group is disposed in the duct of the platinum channel 20 or the air conditioner 17; the adjustment group is disposed on the duct of the air conditioner 17; the controller 1 issues control information based on the data input from the sensor group to realize the corresponding control of the adjustment group.

[0064] Furthermore, the input terminal of the controller 1 is connected to the air supply duct pressure transmitter 11 installed on the air supply duct, and the corresponding output terminal is connected to the motor frequency converter that controls the speed of the fan 16; the input terminal of the air supply duct pressure transmitter 11 is connected to the host computer to realize the setting of the air supply pressure status value.

[0065] Furthermore, the sensor group includes a dew point temperature sensor 2 installed in the platinum channel 20, a supply air duct temperature and humidity sensor 3 installed in the supply air duct, a return air duct temperature sensor 4 installed in the return air duct, and an outdoor differential pressure sensor 5 and an annealing differential pressure sensor 6 installed in the platinum channel 20; the regulating group includes a steam regulating valve 7 installed on the steam pipe, a cooling water pipe electric regulating valve 8 installed on the cooling water pipe, and a fresh air duct electric regulating valve 10 installed on the fresh air duct; the dew point temperature sensor 2 and the supply air duct temperature and humidity sensor 3 are controlled together with the steam regulating valve 7; the return air duct temperature sensor 4 is controlled together with the cooling water pipe electric regulating valve 8; and the outdoor differential pressure sensor 5 and the annealing differential pressure sensor 6 are controlled together with the fresh air duct electric regulating valve 10.

[0066] Dew point temperature sensor 2, supply air duct temperature and humidity sensor 3, return air duct temperature sensor 4, outdoor differential pressure sensor 5, and annealing differential pressure sensor 6 are respectively connected to the host computer to set corresponding state values. The dew point temperature sensor 2, supply air duct temperature and humidity sensor 3, and return air duct temperature sensor 4 can also be set to corresponding state values ​​through controller 1. When the dew point temperature is greater than the set state value and the humidity of the supply air duct is greater than the set state value, controller 1 controls the opening of steam regulating valve 7 to decrease. When the dew point temperature is greater than the set state value and the opening of steam regulating valve 7 is zero, the surface cooler 18 of air conditioner 17 starts to cool and dehumidify. When the surface cooler 18 of air conditioner 17 is equipped with a heat exchanger 19, and the input side of heat exchanger 19 is the chilled water pipe of the kinetic energy network, and the output side is the cooling water pipe of air conditioner 17, the return air duct temperature sensor 4 also corresponds to the control of the chilled water return pipe regulating valve 9.

[0067] Furthermore, the input terminal of controller 1 is connected to supply air volume measuring instruments 12, return air volume measuring instruments 13, and fresh air volume measuring instruments 14, which are respectively installed in the supply air duct, return air duct, and fresh air duct, and the corresponding output terminals are connected to the lower-level computer. The input terminal of controller 1 is connected to a leakage velocity sensor 15, and the corresponding output terminal is connected to the lower-level computer; the leakage velocity sensor 15 is installed at the leakage point from the platinum channel 20 to the annealing zone 21 (between the platinum channel 20 and the annealing zone 21).

[0068] Specifically, this invention is applied to the air conditioner 17 of the platinum channel 20, and the control system structure and control principle are as follows: Figure 2 As shown.

[0069] A dew point temperature sensor 2 is installed inside the platinum channel 20, and an air supply duct temperature and humidity sensor 3 is installed inside the air supply duct. The touch screen on the host computer or field controller 1 allows for setting the dew point temperature. The control program compares the deviation between the measured value and the set value, and, in conjunction with the air supply humidity in the air supply duct, controls the opening of the steam regulating valve 7 on the steam pipe via the AO output point of the controller 1. When the air supply duct humidity is greater than the set value, the control program causes the AO output voltage of the controller 1 to decrease, reducing the opening of the steam regulating valve 7 to prevent steam from condensing into water in the air supply duct. When the steam regulating valve 7 is open to zero, if the dew point temperature is still higher than the set value, dehumidification will be achieved by cooling through the surface cooler 18.

[0070] A return air duct temperature sensor 4 is installed in the return air duct. The average values ​​of the return air temperature and the field temperature sensor can be set on the touch screen on the host computer and the field controller 1. By comparing the difference between the measured value and the set value, the AO output point of the controller 1 controls the electric regulating valve 8 of the cooling water pipeline. Since the heat generation in the platinum channel 20 area is extremely high, if the cooling water system fails, it will cause a major impact on the quality of the glass melt in the platinum channel 20 and may even damage the platinum channel 20. In order to improve the safety performance of the cooling system, the surface cooler 18 in the air conditioner 17 is equipped with a separate heat exchanger 19. The input side is the chilled water from the kinetic energy pipeline network, and the output side is the cooling water used by the air conditioner 17. When the chilled water in the kinetic energy pipeline network is normal, the controller 1 adjusts the chilled water return pipeline regulating valve 9 to automatically reduce the cooling water to the set value range. Then, the circulating water pump supplies the surface cooler 18, and after passing through the cooling water pipeline electric regulating valve 8 of the air conditioner 17, it returns to the circulating water pool and is reused by the heat exchanger 19. If the chilled water temperature in the kinetic energy pipeline is abnormal or there is a water outage, the cooling water circulation can be accelerated to cool the surface cooler 18 by increasing the operating frequency of the circulating water pump and increasing the number of pumps in operation, thus ensuring the safety of the channel.

[0071] An air supply duct pressure transmitter 11 is installed in the air supply duct. The air supply pressure is set on the host computer. By comparing the measured value with the set value, the frequency setting of the motor inverter is output by the controller 1 to control the speed of the fan 16. Alternatively, the operating frequency of the fan 16 can be set remotely on the host computer. An outdoor differential pressure sensor 5 is installed in the platinum channel 20 to the outside, and an annealing differential pressure sensor 6 is installed in the platinum channel 20 to the annealing zone 21. The differential pressure value is set on the host computer. By comparing the measured value with the set value, the electric regulating valve 10 of the fresh air duct is controlled by the AO output of the controller 1 to ensure that the platinum zone has a positive pressure of 3-5 Pa to the outside and that the differential pressure between the platinum zone and the annealing zone 21 is within the range required by the manufacturing process.

[0072] Supply air volume measuring instrument 12, return air volume measuring instrument 13, and fresh air volume measuring instrument 14 are installed on the supply air duct, return air duct, and fresh air duct, respectively. By monitoring the three types of air volume instruments in real time and outputting the data to the lower-level computer, the air conditioner 17 is ensured to operate stably in a certain state, reducing the impact of sudden changes in the control parameters of the platinum channel 20 on production. A leakage air velocity sensor 15 is installed at the leakage point between the platinum channel 20 and the annealing zone 21 to provide airflow parameters to the lower-level computer in the manufacturing department.

[0073] like Figure 3As shown, this embodiment also provides an air conditioning control method for a platinum channel environment, including: a host computer setting the status values ​​of a sensor group; the sensor group monitoring the temperature, humidity, pressure, and differential pressure inside the pipe of the platinum channel 20 or the air conditioner 17; a wind measurement group monitoring the airflow rate inside the pipe of the air conditioner 17; a controller 1 receiving the data monitored by the sensor group and the wind measurement group; a control adjustment group adjusting the temperature, humidity, pressure, and differential pressure inside the pipe of the platinum channel 20 or the air conditioner 17; and transmitting the received data to a lower-level computer.

[0074] Although the embodiments of the present invention have been described above in conjunction with the accompanying drawings and examples, the present invention is not limited to the specific embodiments and application fields described above. The specific embodiments described above are merely illustrative and instructive, and not restrictive. Those skilled in the art, guided by the specification, can make many other modifications without departing from the scope of the claims of the present invention, and all of these modifications are within the scope of protection of the present invention.

Claims

1. An air conditioning control system for a platinum passage environment, characterized in that, It includes a host computer, a sensor group, a wind measurement group, a controller (1), a regulation group, and a slave computer; The host computer is connected to the sensor group, and the sensor group, wind measurement group, adjustment group and slave computer are respectively connected to the controller (1); The host computer is used to monitor and set the status values ​​of the sensor group; The sensor array is used to monitor the temperature, humidity, pressure and differential pressure within the pipes of the platinum channel (20) or the air conditioner (17); The wind measurement group is used to monitor the airflow in the duct of the air conditioner (17); The controller (1) is used to receive data monitored by the sensor group and the wind measurement group, control the adjustment group, and transmit the received data to the lower-level machine; The regulating group is used to regulate the temperature, humidity, pressure and pressure difference in the pipes of the platinum channel (20) or the air conditioner (17); The lower-level machine is used to receive data transmitted by the controller (1); The sensor group includes a dew point temperature sensor (2), a supply air duct temperature and humidity sensor (3), a return air duct temperature sensor (4), an outdoor differential pressure sensor (5), and an annealing differential pressure sensor (6). The dew point temperature sensor (2), outdoor differential pressure sensor (5) and annealing differential pressure sensor (6) are all located in the platinum channel (20); the air supply duct temperature and humidity sensor (3) is located in the air supply duct of the air conditioner (17), and the return air duct temperature sensor (4) is located in the return air duct of the air conditioner (17). The input terminals of the dew point temperature sensor (2), the air supply duct temperature and humidity sensor (3), the return air duct temperature sensor (4), the outdoor differential pressure sensor (5), and the annealing differential pressure sensor (6) are respectively connected to the host computer, and their output terminals are respectively connected to the controller (1). The regulating group includes a steam regulating valve (7), a cooling water pipeline electric regulating valve (8), and a fresh air pipeline electric regulating valve (10). The steam regulating valve (7) is installed on the steam pipe, the cooling water pipe electric regulating valve (8) is installed on the cooling water pipe, and the fresh air pipe electric regulating valve (10) is installed on the fresh air pipe. The steam regulating valve (7), the cooling water pipeline electric regulating valve (8), and the fresh air pipeline electric regulating valve (10) are respectively connected to the controller (1); The regulating group also includes a chilled water return pipe regulating valve (9), which is installed on the chilled water return pipe. The surface cooler (18) in the air conditioner (17) is connected to a heat exchanger (19), and the chilled water return pipe regulating valve (9) is connected to the controller (1).

2. The air conditioning control system for a platinum passage environment according to claim 1, characterized in that, The sensor group also includes an air supply duct pressure transmitter (11), which is installed in the air supply duct of the air conditioner (17) and is connected to the host computer and the controller (1) respectively.

3. An air conditioning control system for a platinum passage environment according to claim 2, characterized in that, The input terminal of the controller (1) is connected to the air supply pipe pressure transmitter (11), and the output terminal of the controller (1) is connected to a motor frequency converter.

4. An air conditioning control system for a platinum passage environment according to claim 1, characterized in that, The sensor group also includes a leakage wind speed sensor (15), which is located between the platinum channel (20) and the annealing zone (21) and is connected to the controller (1).

5. An air conditioning control system for a platinum passage environment according to claim 1, characterized in that, The input side of the heat exchanger (19) is connected to the chilled water return pipe.

6. An air conditioning control system for a platinum passage environment according to claim 1, characterized in that, The air measurement group includes a supply air volume measuring instrument (12), a return air volume measuring instrument (13), and a fresh air volume measuring instrument (14). The supply air volume measuring instrument (12) is installed on the supply air duct, the return air volume measuring instrument (13) is installed on the return air duct, and the fresh air volume measuring instrument (14) is installed on the fresh air duct. The supply air volume measuring instrument (12), return air volume measuring instrument (13) and fresh air volume measuring instrument (14) are respectively connected to the controller (1).

7. An air conditioning control method for a platinum passage environment, based on the air conditioning control system for a platinum passage environment according to any one of claims 1-6, characterized in that, The steps include the following: The host computer monitors and sets the status values ​​of the sensor group. The sensor group monitors the temperature, humidity, pressure and differential pressure in the pipe of the platinum channel (20) or air conditioner (17). The wind measurement group monitors the air flow rate in the pipe of the air conditioner (17). The controller (1) receives the data monitored by the sensor group and the wind measurement group. The control adjustment group adjusts the temperature, humidity, pressure and differential pressure in the pipe of the platinum channel (20) or air conditioner (17) and transmits the received data to the lower computer.

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