Operation control method of anti-freezing device of high-level water collection cooling tower capable of being used for construction in cold region

Abstract

The invention provides an operation control method for an anti-freezing device of a high-position water collecting cooling tower, which can be used for construction in a cold region. The anti-freezing device and a sealing ceiling are included, the anti-freezing device is arranged around the high-position water collecting cooling tower, and the sealing ceiling is arranged between the top of the anti-freezing device and a tower drum of the high-position water collecting cooling tower; the system further comprises a temperature measuring element in the water collecting tank and a system control module; through the system control module, the flexible wind screen can be automatically retracted into the driving device outer cover in the hot season, and air inlet of the high-position water collection cooling tower is not affected; in winter, operation control over the flexible wind screen can be manually or automatically executed according to an established control strategy under the winter operation working condition of the high-position water collecting cooling tower, the precise anti-freezing function of the high-position water collecting cooling tower is achieved, circulating water can operate at the low temperature, the back pressure of a unit is reduced, and the economical efficiency of the unit is improved; according to the automatic operation control method of the anti-freezing device, the stability and the safety of the circulating water control system with the high-level water collecting cooling tower are improved.

Description

Technical Field

[0001] The invention relates to the technical field of cooling tower antifreeze, and in particular to an operation control method of an antifreeze device provided in a fresh water or sea water high-level water collection cooling tower constructed in cold regions. Background Art

[0002] Compared with conventional natural ventilation cooling towers, high-position water collection cooling towers have the characteristics of lowering the height of the rain area, reducing the net head of the circulating water pump, and reducing the noise of the cooling tower. Therefore, the use of natural ventilation high-position water collection cooling towers in large-capacity thermal power units and nuclear power units has significant advantages. The water filling and water collection tank of the high-position water collection cooling tower are usually suspended. If the water filling, water collection inclined plate, water collection tank and other parts are covered with ice in areas with low temperatures in winter, they will be damaged and fall, affecting the normal operation of the high-position water collection cooling tower. Therefore, the high-position water collection cooling towers that have been put into operation at home and abroad are all located in areas with high ambient temperatures.

[0003] If high-level water-collecting cooling towers with highly energy-saving effects are to be used in cold northern regions and the application area of ​​high-level water-collecting cooling towers is to be expanded, effective anti-freeze measures or anti-freeze devices must be taken. The anti-freeze devices must have reliable anti-freeze operation modes to ensure the safe and stable operation of the cooling towers. Summary of the invention

[0004] In view of the fact that the existing high-position water-collecting cooling towers lack effective antifreeze measures or antifreeze devices and have not been applied in the cold northern regions, the present invention provides antifreeze measures or a reliable antifreeze operation mode for the antifreeze device. The tower can adjust the opening of the antifreeze device according to the ambient temperature and the operating load of the unit, and control the air volume entering the cooling tower, so as to control the water temperature out of the tower to be higher than the water temperature at which freezing occurs, thereby avoiding freezing of the high-position water-collecting cooling tower, and effectively solving the problem of the high-position water-collecting cooling tower being able to be applied in the cold northern regions.

[0005] In order to solve the above technical problems, the present invention provides an operation control method of an antifreeze device of a high-position water-collecting cooling tower that can be used for construction in cold areas, including an antifreeze device and a sealed ceiling, the antifreeze device is arranged around the high-position water-collecting cooling tower, and a sealed ceiling is arranged between the top of the antifreeze device and the tower barrel of the high-position water-collecting cooling tower; the antifreeze device is composed of a plurality of units, which are evenly arranged around the cooling tower, 3m to 4m away from the inclined pillars of the cooling tower, each antifreeze device includes a frame, a driving device, a double-groove running track, a guide chain, a fixed pulley and a flexible wind screen, the driving device includes a motor and power roller assembly 1, a motor and power roller assembly 2, and a driving device outer cover, the driving device outer cover is installed at the top of the frame, the motor and power roller assembly 1 and the motor and power roller assembly 2 are arranged in the driving device outer cover; double-groove running tracks are arranged on both sides of the frame, wherein the motor and power roller assembly 1 in one groove drives the flexible wind screen to operate, and the motor in the other groove drives the flexible wind screen to operate. And the power roller assembly 2 is used for running the guide chain, guide wheels are arranged on both sides of the flexible windshield, the guide wheels can move in one of the grooves of the double-groove running track, a fixed pulley is arranged at the bottom of the frame, and gravity beams with pulleys on both sides are arranged at the bottom of the flexible windshield, and the guide wheels can move in one groove of the double-groove running track; it also includes a temperature measuring element in the water collecting tank and a system control module, and the specific operation control method includes: the temperature measuring element is arranged in the water collecting tank of the cooling tower to realize that under different ambient temperature conditions, the water temperature of the water collecting tank in different areas is fed back to the system control module; the system control module is used to determine the antifreeze control temperature setting value in the water collecting tank according to the numerical simulation calculation results of the high-level water collecting cooling tower, and by receiving the ambient temperature, wind direction, atmospheric pressure meteorological parameters, it can regularly obtain the water temperature data of the temperature measuring element in the water collecting tank, and compare it with the set antifreeze control temperature. After receiving the water temperature feedback signal in the water collecting tank in different areas, the antifreeze device is automatically adjusted.

[0006] Furthermore, the system control module includes a processor and a memory, and its function is to receive the value of the temperature measuring element and automatically perform operational control of the opening of the flexible wind screen according to the antifreeze control temperature setting value in the water collecting tank determined by the numerical simulation calculation results.

[0007] Furthermore, after receiving the water temperature feedback signal in the water collecting tanks in different areas, the system control module automatically adjusts the antifreeze device, thereby establishing a control strategy for the high-level water collecting cooling tower under winter operating conditions based on the ambient temperature, water temperature in the water collecting tank, unit load, and flexible wind curtain control parameters.

[0008] Furthermore, the temperature measuring elements are arranged in the water collecting trough near the tower and in the middle of the water collecting trough of the high-position water collecting cooling tower. The arrangement can also be optimized according to the numerical simulation calculation results of the high-position water collecting cooling tower, and the numerical signals of these temperature measuring elements can enter the system control module.

[0009] Furthermore, the system control module receives meteorological parameters such as ambient temperature, wind direction, and atmospheric pressure; can periodically obtain water temperature data of the temperature measuring element in the water collecting tank and compare it with the set antifreeze control temperature; and can operate the mechanism to execute non-winter mode and winter mode.

[0010] Furthermore, the high-level water collection cooling tower executes the automatic operation mode of the antifreeze device under normal working conditions, and executes the manual operation mode of the antifreeze device under manual control.

[0011] Furthermore, according to the average daily temperature of the environment, after the system control module automatically enters the non-winter mode and the winter mode, when the water temperature measured by the temperature measuring element in the water tank of a certain area of ​​the high-level water collecting cooling tower is lower than the antifreeze control temperature setting value in the water tank determined by the numerical simulation calculation results, the system control module issues a command to reduce the opening of the flexible wind screen in the corresponding area of ​​the first level to reduce the ventilation volume. At the same time, the water temperature signal measured by the temperature measuring element in the water tank of the high-level water collecting cooling tower is fed back to the system control module every 1 minute until the water temperature measured by the temperature measuring element in the water tank of the high-level water collecting cooling tower in this area is equal to the water temperature setting value preset by the water temperature setting value module. Then, the system control module executes the command to maintain the opening of the flexible wind screen. The minimum opening of the flexible wind screen is 0%. When the opening is 0%, it still remains When the water temperature in the water receiving tank cannot be lowered to 15°C below the minimum antifreeze control temperature, a frost damage alarm is issued; when the water temperature measured by the temperature measuring element in the water receiving tank of a certain area of ​​the high-level water receiving cooling tower rises to the antifreeze control temperature setting value in the water receiving tank determined by the numerical simulation calculation results + 2°C, the system control module issues an instruction to increase the opening of the flexible wind screen in the corresponding area by one level to increase the ventilation volume, and the water temperature signal measured by the temperature measuring element in the water receiving tank of the high-level water receiving cooling tower is fed back to the system control module every 1 minute until the water temperature measured by the temperature measuring element in the water receiving tank of the high-level water receiving cooling tower is equal to the antifreeze control temperature setting value in the water receiving tank determined by the numerical simulation calculation results. The system control module executes an instruction to maintain the opening of the flexible wind screen, and the maximum opening of the flexible wind screen is 100%.

[0012] Furthermore, a gravity beam with pulleys on both sides is arranged at the bottom of the flexible windshield curtain, and the pulley can run in one of the grooves of the double-groove running track. One side of the guide chain is connected to the gravity beam, and the other side is connected to the motor and power roller assembly 2, and is arranged in the other groove of the double-groove running track.

[0013] Furthermore, a lower stopper is arranged at the bottom ground of the double-groove running track, and an upper stopper is arranged at the top of the double-groove running track and the outer cover of the driving device, so that the flexible windshield curtain runs between the upper stopper and the lower stopper.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) The high-position water collection cooling tower can lower the height of the rain area, reduce the net head of the circulating water pump, and reduce the noise of the cooling tower. By adding an anti-freeze device to the high-position water collection cooling tower, the high-position water collection cooling tower can be used in cold areas, expanding the application range of the high-position water collection cooling tower.

[0016] (2) Through the system control module, the flexible wind shield can be automatically retracted into the outer cover of the drive device in the hot season without affecting the air intake of the high-position water collection cooling tower; in winter, according to the established control strategy for the winter operating conditions of the high-position water collection cooling tower, the operation of the flexible wind shield can be manually or automatically controlled to achieve the precise anti-freezing function of the high-position water collection cooling tower, and the circulating water can be operated at a lower temperature, reducing the back pressure of the unit and improving the economy of the unit.

[0017] (3) A high-level water collection cooling tower with an antifreeze device is a conventional high-level water collection cooling tower with an antifreeze device and its control system added around it. The device has a simple structure, low engineering cost, can realize automatic operation, and has low operation and maintenance costs. It can be applied not only to newly built units, but also to the transformation of existing units.

[0018] (4) The automatic operation control method of the antifreeze device improves the stability and safety of the circulating water control system with a high-level water collection cooling tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a high-position water-collecting cooling tower with an antifreeze device of the present invention;

[0020] Figure 2 It is a front elevation view of a unit of the antifreeze device of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the antifreeze device of the present invention;

[0022] Figure 4 It is the layout diagram of the temperature measuring element in the tower of the present invention;

[0023] Figure 5 It is a flow chart of the temperature measurement and antifreeze device operation control method of the present invention.

[0024] In the figure: 1. tower; 2. water distribution trough; 3. water sprinkling filler; 4. water collecting inclined plate; 5. water collecting trough; 6. cooling tower inclined support; 7. sealed ceiling; 8. driving device; 9. frame; 10. double-groove running track; 11. flexible wind curtain; 12. fixed pulley; 13. driving device cover; 14. motor and power roller assembly 1; 15. motor and power roller assembly 2; 16. driven pulley; 17. upper block; 18. lower block; 19. gravity beam with pulleys on both sides; 20. guide chain; 21. temperature measuring element. DETAILED DESCRIPTION

[0025] The specific installation mode of the present invention is described in detail below in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details of the following implementation modes, and all other forms derived from the technical essence of the present invention are within the protection scope of the present invention.

[0026] The temperature measuring elements 21 provided by the present invention are arranged in the water collecting tank near the tower part and the middle part of the water collecting tank of the high-position water collecting cooling tower, and the values ​​of these temperature measuring elements 21 can enter the system control module.

[0027] The system control module provided by the present invention can automatically adjust the antifreeze device after receiving the water temperature feedback signal in the water tanks of different areas according to the antifreeze control temperature setting value in the water tank determined by the numerical simulation calculation results of the high-level water collecting cooling tower, thereby establishing a control strategy for the high-level water collecting cooling tower under winter operating conditions according to the ambient temperature, the water temperature in the water tank, the unit load, and the control parameters of the flexible wind screen. The position of the temperature measuring element 21 in the water tank of the high-level water collecting cooling tower can be optimally arranged according to the numerical simulation calculation results of the high-level water collecting cooling tower. The system control module includes a processor and a memory, and its function has the ability to receive the value of the temperature measuring element 21, and automatically perform operational control of the opening of the flexible wind screen 11 according to the antifreeze control temperature setting value in the water tank determined according to the numerical simulation calculation results.

[0028] Antifreeze device layout and working principle:

[0029] like Figure 1 As shown, the present invention includes a high-position water collecting cooling tower, an antifreeze device, and a sealed ceiling 7 is arranged between the top of the antifreeze device and the tower tube of the high-position water collecting cooling tower. The high-position water collecting cooling tower includes a tower tube 1, a cooling tower inclined support 6, a water distribution trough 2, a water sprinkling filler 3, a water collecting inclined plate 4 and a water collecting trough 5. The water collecting inclined plate 4 is located below the water sprinkling filler 3, and the bottom of the water collecting inclined plate 4 is connected to the water collecting trough 5.

[0030] A sealed ceiling 7 is provided on the top of the high-position water-collecting cooling tower cylinder 1 and the antifreeze device.

[0031] The antifreeze device is arranged 3m to 4m outside the intersection of the inclined support 6 of the cooling tower and the ground.

[0032] like Figure 2 , Figure 3 As shown, each antifreeze device unit includes a driving device 8, a frame 9, a double-groove running track 10, a flexible wind screen 11, a fixed pulley 12, a driving device cover 13, a motor and power roller assembly 14, a motor and power roller assembly 2 15, a driven pulley 16, an upper stopper 17, a lower stopper 18, a gravity beam with pulleys on both sides 19, and a guide chain 20.

[0033] The motor and power roller assembly 14 in the driving device outer cover 13 is used to drive the flexible windshield curtain 11 to move upward and store the flexible windshield curtain 11. The motor and power roller assembly 2 15 drives the guide chain 20 to make the flexible windshield curtain 11 move downward.

[0034] The driving device 8 includes a motor and power roller assembly 14, a motor and power roller assembly 2 15, and a driving device cover 13. The driving device cover 13 is installed at the top of the frame 9, and the motor and power roller assembly 14 and the motor and power roller assembly 2 15 are arranged in the driving device cover 13; double-groove running tracks 10 are arranged on both sides of the frame 9, in which the motor and power roller assembly 14 in one groove drives the flexible windshield 11 to run, and the motor and power roller assembly 2 15 in the other groove is used to run the guide chain 20, guide wheels are arranged on both sides of the flexible windshield 11, and the guide wheels can move in one groove of the double-groove running track 10, a fixed pulley 12 is arranged at the bottom of the frame 9, and gravity beams 19 with pulleys on both sides are arranged at the bottom of the flexible windshield 11, and the pulleys can move in one groove of the double-groove running track 10, one side of the guide chain 20 is connected to the gravity beams 19 with pulleys on both sides, and the other side is connected to the motor and power roller assembly 2 15, and is arranged in the other groove of the double-groove running track 10.

[0035] A lower stopper 18 is arranged at the bottom of the double-groove running track 10 , and an upper stopper 17 is arranged at the top of the double-groove running track 10 and the driving device outer cover 13 , so that the flexible windshield 11 runs in the upper stopper 17 and the lower stopper 18 .

[0036] Antifreeze device closing operation: the motor and power roller assembly 14 are started, the flexible windscreen 11 and the gravity beams 19 with pulleys on both sides run upward along the first groove of the double-groove running track 10. During this operation, the motor and power roller assembly 2 15 are in a driven reverse state, and the guide chain 20 moves downward through the driven pulley 16 and the fixed pulley 12 and the gravity beams 19 with pulleys on both sides move upward along the double-groove running track 10 until the flexible windscreen 11 is fully opened, that is, the gravity beams 19 with pulleys on both sides stop when they run to the upper block 17. The opening process can be stopped at any intermediate position as needed.

[0037] Antifreeze device start-up operation: the motor and power roller assembly 2 15 are started, the flexible windscreen 11 and the gravity beams 19 with pulleys on both sides run downward along the first groove of the double-groove running track 10. During this operation, the motor and power roller assembly 14 are in a driven reverse state, and the gravity beams 19 with pulleys on both sides move downward together with the guide chain 20 through the fixed pulley 12 and the driven pulley 16 along the double-groove running track 10 until the flexible windscreen 11 is completely closed, that is, the gravity beams 19 with pulleys on both sides stop when they run to the lower block 18. The closing process can be stopped at any intermediate position as needed.

[0038] like Figure 4 As shown, the present invention includes a temperature measuring element 21 arranged in the water collecting tank 5 of the high-level water collecting cooling tower. The typical position of the temperature measuring element 21 can be determined based on experience or numerical simulation calculations. The temperature measuring element 21 can transmit the temperature signal to the system control module.

[0039] Antifreeze device operation control mode:

[0040] Manual mode: In manual mode, the opening range of any antifreeze device can be manually controlled.

[0041] Automatic mode: The automatic mode includes two modes: non-winter mode and winter mode.

[0042] Non-winter mode: When the average daily ambient temperature is greater than or equal to 10°C (adjustable) for 5 consecutive days (adjustable), the antifreeze device enters the non-winter mode. Although the antifreeze device is designed for winter antifreeze, if the water temperature is too low in other seasons to affect the efficiency of the unit, the antifreeze device can also be started to reduce the ventilation area under the flexible wind screen 11 and the air intake to achieve the purpose of accurately controlling the water temperature. If there is no problem of water temperature being too cold, the antifreeze device is in a completely closed operating state, that is, the ventilation area under the flexible wind screen 11 is at its maximum state.

[0043] Winter mode: When the average daily ambient temperature is less than 5°C (adjustable) for 5 consecutive days (adjustable), the antifreeze device enters winter mode. The winter mode mainly achieves the antifreeze target by monitoring the water temperature in the water collecting tank 5, and sets 15°C (adjustable) as the minimum antifreeze control temperature (Tw) of the temperature measuring element 21.

[0044] Operation control method:

[0045] like Figure 5 As shown, the operation control method of the antifreeze device of the present invention, the system control module has the functions of: being able to receive meteorological parameters such as ambient temperature, wind direction, atmospheric pressure, etc.; being able to regularly obtain the water temperature data of the temperature measuring element 21 in the water collecting tank 5, and compare it with the set antifreeze control temperature (Tw); being able to operate the mechanism to execute non-winter mode and winter mode.

[0046] The antifreeze device operates in automatic mode under normal operating conditions of the high-level water collection cooling tower, and in manual mode under manual control.

[0047] According to the daily average temperature of the environment, the system control module automatically enters the non-winter mode and the winter mode. When the water temperature measured by the temperature measuring element 21 in the water tank 5 of a certain area of ​​the high-level water collecting cooling tower is lower than the antifreeze control temperature setting value in the water tank determined by the numerical simulation calculation results, the system control module issues a command to reduce the opening of the flexible wind screen 11 in the corresponding area of ​​the first level to reduce the ventilation volume. At the same time, the water temperature signal measured by the temperature measuring element 21 in the water tank 5 of the high-level water collecting cooling tower is fed back to the system control module every 1 minute (the time is adjustable) until the water temperature measured by the temperature measuring element 21 in the water tank 5 of the high-level water collecting cooling tower is equal to the water temperature setting value preset by the water temperature setting value module. Then, the system control module executes the command to keep the opening of the flexible wind screen 11. The minimum opening of the flexible wind screen 11 is 0%. When the opening is 0%, the water tank cannot be opened. When the water temperature is lower than the minimum antifreeze control temperature of 15°C (adjustable), a frost damage alarm is issued; when the water temperature measured by the temperature measuring element 21 in the water tank 5 of a certain area of ​​the high-level water collecting cooling tower rises to the antifreeze control temperature setting value of the water tank 5 determined by the numerical simulation calculation results + 2°C (temperature adjustable), the system control module issues an instruction to increase the opening of the flexible wind screen 11 in the corresponding area by one level to increase the ventilation volume. The water temperature signal measured by the temperature measuring element 21 in the water tank 5 of the high-level water collecting cooling tower is fed back to the system control module every 1 minute (time adjustable) until the water temperature measured by the temperature measuring element 21 in the water tank 5 of the high-level water collecting cooling tower is equal to the antifreeze control temperature setting value determined by the numerical simulation calculation results. The system control module executes the instruction to maintain the opening of the flexible wind screen, and the maximum opening of the flexible wind screen 11 is 100%.

[0048] When the water temperature measured by the temperature measuring element 21 in the water collecting tank of a certain area of ​​the high-level water collecting cooling tower deviates from the antifreeze control temperature setting value in the water collecting tank determined by the numerical simulation calculation results, the automatic operation control method of the antifreeze device will be executed.

Claims

1. An operation control method of an antifreeze device for a high-position water-collecting cooling tower that can be used in cold regions, comprising an antifreeze device and a sealed ceiling, wherein the antifreeze device is arranged around the high-position water-collecting cooling tower, and a sealed ceiling is arranged between the top of the antifreeze device and the tower barrel of the high-position water-collecting cooling tower; the antifreeze device is composed of a plurality of units, which are evenly arranged around the cooling tower and are 3m to 4m away from the inclined pillars of the cooling tower; each antifreeze device comprises a frame, a driving device, a double-groove running track, a guide chain, a fixed pulley and a flexible windshield, and the driving device comprises a motor and a power roller assembly 1, a motor and a power roller assembly 2, a driving device The driving device cover is installed on the top of the frame, and the motor and power roller assembly 1 and the motor and power roller assembly 2 are arranged in the driving device cover; double-groove running tracks are arranged on both sides of the frame, and the motor and power roller assembly 1 in one groove drives the flexible windshield to run, and the motor and power roller assembly 2 in the other groove is used to run the guide chain, and guide wheels are arranged on both sides of the flexible windshield, and the guide wheels can run in one groove of the double-groove running track, a fixed pulley is arranged at the bottom of the frame, and gravity beams with pulleys on both sides are arranged at the bottom of the flexible windshield, and the guide wheels can run in one groove of the double-groove running track; it is characterized in that It also includes a temperature measuring element in the water collecting tank and a system control module. The specific operation control method includes: the temperature measuring element is arranged in the water collecting tank of the cooling tower to realize feedback to the system control module according to the water temperature of the water collecting tank in different areas under different ambient temperature conditions; the system control module is used to determine the antifreeze control temperature setting value in the water collecting tank according to the numerical simulation calculation results of the high-level water collecting cooling tower. By receiving the ambient temperature, wind direction, atmospheric pressure meteorological parameters, it can regularly obtain the water temperature data of the temperature measuring element in the water collecting tank, and compare it with the set antifreeze control temperature. After receiving the water temperature feedback signal in the water collecting tank in different areas, the antifreeze device is automatically adjusted.

2. The operation control method of the high-position water collection cooling tower antifreeze device that can be used in cold regions according to claim 1 is characterized in that: The system control module includes a processor and a memory, and its function is to receive the value of the temperature measuring element and automatically perform operation control on the opening of the flexible windshield according to the antifreeze control temperature setting value in the water collection tank determined by the numerical simulation calculation result.

3. The operation control method of the high-position water collection cooling tower antifreeze device that can be used in cold regions according to claim 1 is characterized in that: The temperature measuring elements are arranged in the water collecting trough near the tower and in the middle of the water collecting trough of the high-position water collecting cooling tower. The arrangement can also be optimized according to the numerical simulation calculation results of the high-position water collecting cooling tower, and the numerical signals of these temperature measuring elements can enter the system control module.

4. The operation control method of the high-position water collection cooling tower antifreeze device that can be used in cold regions according to claim 1 is characterized in that: The system control module can operate the antifreeze device to execute a non-winter mode and a winter mode.

5. The operation control method of the high-position water collection cooling tower antifreeze device that can be used in cold regions according to claim 4 is characterized in that: According to the daily average temperature of the environment, the system control module automatically enters the non-winter mode and the winter mode. When the water temperature measured by the temperature measuring element in the water tank of a certain area of ​​the high-level water collecting cooling tower is lower than the antifreeze control temperature setting value in the water tank determined by the numerical simulation calculation results, the system control module issues a command to reduce the opening of the flexible wind screen in the corresponding area of ​​the first level to reduce the ventilation volume. At the same time, the water temperature signal measured by the temperature measuring element in the water tank of the high-level water collecting cooling tower is fed back to the system control module every 1 minute until the water temperature measured by the temperature measuring element in the water tank of the high-level water collecting cooling tower in this area is equal to the water temperature setting value preset by the water temperature setting value module. Then the system control module executes the command to maintain the opening of the flexible wind screen. The minimum opening of the flexible wind screen is 0%. When the opening is 0%, it is still unable to When the water temperature in the water tank is lower than the minimum antifreeze control temperature of 15°C, a frost damage alarm is issued; when the water temperature measured by the temperature measuring element in the water tank of a certain area of ​​the high-level water collecting cooling tower rises to the antifreeze control temperature setting value in the water tank determined by the numerical simulation calculation results + 2°C, the system control module issues an instruction to increase the opening of the flexible wind screen in the corresponding area by one level to increase the ventilation volume, and the water temperature signal measured by the temperature measuring element in the water tank of the high-level water collecting cooling tower is fed back to the system control module every 1 minute until the water temperature measured by the temperature measuring element in the water tank of the high-level water collecting cooling tower in this area is equal to the antifreeze control temperature setting value in the water tank determined by the numerical simulation calculation results. The system control module executes the instruction to maintain the opening of the flexible wind screen, and the maximum opening of the flexible wind screen is 100%.

6. The operation control method of the high-position water collection cooling tower antifreeze device that can be used in cold regions according to claim 1 is characterized in that: One side of the guide chain is connected to the gravity beam, and the other side is connected to the motor and power roller assembly 2, and is arranged in the other groove of the double-groove running track.

7. The operation control method of the high-position water collection cooling tower antifreeze device that can be used in cold regions according to claim 1 is characterized in that: A lower stopper is arranged at the bottom of the double-groove running track on the ground, and an upper stopper is arranged at the top of the double-groove running track and the outer cover of the driving device, so that the flexible windshield curtain runs in the upper stopper and the lower stopper.

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