阅读说明：本技术 一种间接空冷塔分压防冻装置及方法 (Partial pressure anti-freezing device and method for indirect air cooling tower ) 是由 张利 王子豪 李高潮 张仲琪 康卫东 师进文 马旭 孟继文 苗俊明 胡建军 于 2021-09-06 设计创作，主要内容包括：本发明公开一种间接空冷塔分压防冻装置及方法,装置包括安装在空冷塔密封平台上的多个分压散热装置；所述分压散热装置包括安装框架、导流通道、密封盖板和驱动装置；所述安装框架固定在迎风扇区的空冷塔密封平台上开设的孔内；所述导流通道一端与安装框架连接,另一端延伸至空冷塔密封平台下方的空冷塔X柱并与空冷塔X柱固定。所述安装框架端口内侧设置有滑轨,所述密封盖板为折叠结构,密封盖板的端部设置有滑块,滑块设置在所述滑轨内；所述驱动装置连接所述密封盖板的滑块沿滑轨作直线运动,带动密封盖板打开或关闭安装框架端口。以解决冬季空冷塔散热管束容易冻结胀裂的问题。(The invention discloses a partial pressure antifreezing device and a partial pressure antifreezing method for an indirect air cooling tower, wherein the device comprises a plurality of partial pressure heat dissipation devices arranged on a sealing platform of the air cooling tower; the partial pressure heat dissipation device comprises an installation frame, a flow guide channel, a sealing cover plate and a driving device; the mounting frame is fixed in a hole formed in an air cooling tower sealing platform of the windward sector; one end of the diversion channel is connected with the installation frame, and the other end of the diversion channel extends to an X column of the air cooling tower below the air cooling tower sealing platform and is fixed with the X column of the air cooling tower. A sliding rail is arranged on the inner side of the port of the installation frame, the sealing cover plate is of a folding structure, a sliding block is arranged at the end part of the sealing cover plate, and the sliding block is arranged in the sliding rail; the driving device is connected with the sliding block of the sealing cover plate and moves linearly along the sliding rail to drive the sealing cover plate to open or close the mounting frame port. The problem that the radiating pipe bundle of the air cooling tower is easy to freeze and crack in winter is solved.)

1. The indirect air cooling tower partial pressure freeze-proofing device is characterized by comprising a plurality of partial pressure guide devices arranged on a sealing platform (12) of an air cooling tower; the partial pressure flow guide device comprises an installation frame (2), a flow guide channel (4), a sealing cover plate (5) and a driving device;

the mounting frame (2) is fixed in a hole formed in an air cooling tower sealing platform (12) above a heat dissipation sector of the air cooling tower; one end of the diversion channel (4) is connected with the mounting frame (2), and the other end of the diversion channel extends to and is fixed with an X column of the air cooling tower below the air cooling tower sealing platform (12);

a sliding rail (7) is arranged on the inner side of the port of the mounting frame (2), the sealing cover plate (5) is of a folding structure, a sliding block is arranged at the end part of the sealing cover plate (5), and the sliding block is arranged in the sliding rail (7); the driving device is connected with a sliding block of the sealing cover plate (5) and moves linearly along the sliding rail (7) to drive the sealing cover plate (5) to open or close the port of the installation frame (2).

2. The indirect air cooling tower partial pressure freeze-proofing device of claim 1,

the driving device comprises a hydraulic support column (3), the bottom of the hydraulic support column (3) is hinged, and a hydraulic rod of the hydraulic support column (3) is connected with a sliding block of the sealing cover plate (5).

3. The indirect air cooling tower partial pressure freeze-proofing device of claim 1,

sealed apron (5) are provided with two, and two sealed apron (5) set up the both sides in same slide rail (7), and two are run from opposite directions about sealed apron (5), and one side that two sealed apron (5) kept away from is fixed, and one side that is close to is the free end, two drive arrangement is connected with a sealed apron (5) respectively.

4. The indirect air cooling tower partial pressure freeze-proofing device of claim 1,

the sliding block is provided with a rolling bearing (6), and the rolling bearing (6) is arranged in the sliding rail (7).

5. The indirect air cooling tower partial pressure freeze-proofing device of claim 1,

and the flow guide channel (4) is fixed with the X column of the air cooling tower through a mounting bracket (8).

6. The indirect air cooling tower partial pressure freeze-proofing device of claim 1,

the central lines of the upper and lower ports of the flow guide channel (4) are mutually vertical.

7. The indirect air cooling tower partial pressure freeze-proofing device of claim 1,

the area of the upper port of the flow guide channel (4) is larger than that of the lower port.

8. The indirect air cooling tower partial pressure freeze-proofing device of claim 1,

2-4 partial pressure guide devices are arranged on the air cooling tower sealing platform (12).

9. The antifreezing method of the indirect air cooling tower partial pressure antifreezing device as claimed in any one of claims 1 to 8, comprising:

according to the condition of the cooling water temperature in the heat dissipation pipe bundle of the indirect air cooling tower, the driving device is controlled to drive the sealing cover plate (5) to be opened or closed, so that air outside the air cooling tower flows into the inner space of the air cooling tower through the flow guide channel (4), and the temperature of the heat dissipation pipe bundle is controlled.

10. The antifreezing method for the indirect air cooling tower partial pressure antifreezing device as claimed in claim 9, comprising the steps of:

when the temperature of cooling water in a radiating pipe bundle of an indirect air cooling tower is reduced to an alarm value, controlling a hydraulic strut (3) corresponding to a windward sector to reduce the pressure according to real-time operation data of a power plant, and further opening a corresponding sealing cover plate (5) to enable air outside the air cooling tower to flow into an inner space of the air cooling tower through a diversion channel (4), so that the temperature of the cooling water in the radiating pipe bundle is controlled; when cold air outside the tower flows into the inner space of the air cooling tower through the partial pressure anti-freezing device, the air temperature in the air cooling tower is reduced, and further the total suction force of the air cooling tower is reduced; at the moment, the hydraulic prop (3) is controlled to be pressurized, the opening degree of the sealing cover plate (5) is reduced, and the suction force acting on the radiating pipe bundle tends to be stable;

and continuously monitoring the temperature of the cooling water in the radiating pipe bundles of each sector of the air cooling tower, if the temperature of the cooling water in other sectors is lower than a warning value, controlling the hydraulic support columns (3) of the corresponding sectors to reduce the pressure, opening the sealing cover plates (5) to share the suction force on the corresponding sectors, further reducing the heat dissipation capacity of the radiating pipe bundles of the corresponding sectors, and controlling the temperature of the cooling water in the pipe bundles to prevent the pipe bundles from freezing and cracking.

Technical Field

The invention relates to the technical field of air cooling towers of thermal power plants, in particular to a partial pressure antifreezing device and a partial pressure antifreezing method for an indirect air cooling tower.

Background

The cold end system is one of the important components of the thermal power plant, and the normal operation of the system is the basis of the stable and safe operation of the thermal power plant. The cold end system of a standard thermal power plant is generally divided into two modes of water cooling and air cooling. The most efficient cooling is water cooling, but water cooling consumes a large amount of water. Because the northern area of China has the characteristic of 'rich coal and water' in resource distribution, cold end systems of thermal power plants generally adopt an air cooling mode. Meanwhile, in the air cooling system, the natural ventilation air cooling system is widely applied to northern areas of China due to the advantages of low power consumption, low noise, simple operation and maintenance and the like. However, in most areas in northern China, the temperature is low in winter, the heat dissipation capacity of the air cooling radiator is increased rapidly by cold air, and in addition, a thermal power plant needs to bear heating load and participate in deep peak shaving, the temperature of cooling water at an inlet of an air cooling tower is reduced, circulating water in the air cooling heat dissipation pipe bundle is easy to freeze due to the two factors, and further, due to volume expansion caused by freezing, the pipe bundle of the radiator is blocked and burst, and the safe operation of an indirect air cooling system and even the whole power plant is seriously threatened. Therefore, if the icing problem of the indirect air cooling system can be solved, the economical efficiency, the stability and the safety of the operation of the air cooling power plant can be greatly improved.

In the prior art, anti-freezing measures such as adjusting the flow of circulating water, installing a shutter and installing a fan for pre-warming are generally used, but the measures have obvious defects. For the method for adjusting the flow rate of the circulating water, when the temperature is extremely low in winter or in windy weather, part of the circulating water in the sector is generally pumped out, and the sector is stopped, so that the heat dissipation capacity of the whole air cooling tower is reduced. However, the adjustment method needs a long operation time, and if sudden windy weather occurs, timely adjustment may not be performed, thereby causing freezing accidents. The method for installing the shutter has the advantages that the adjustment is convenient during normal operation, and the air flow of the air cooling tower can be controlled. However, the shutter is a mechanical structure containing more moving parts, so that mechanical failure is easy to occur at ordinary times; and because the suction force of the air cooling tower is large, when the shutter is fully closed, air still flows through the tube bundle under the action of the suction force. Although the method for installing the pre-heating fan can effectively prevent the frost crack of the tube bundle, extra pumping work is consumed, and the economical efficiency is poor.

In chinese patent CN201510120578.5, an indirect air cooling tower with multiple cooling sectors and an anti-freezing method thereof are proposed, wherein the working principle is to add one to two parallel sectors above the original sector, so as to reduce the tube pass resistance during normal operation, and close the upper sector in winter, open the shutter and reduce the suction force of the cooling tower. However, the method still needs to evacuate the cooling water of the corresponding sector, and although the cooling water of the upper sector is already evacuated, the cold air continuously passes through the tube bundle without a heat source, so that the temperature of the tube bundle is rapidly reduced, and accidents such as material brittle failure and the like can be caused; meanwhile, the section with extremely low temperature can not be put into use in a short time, because once hot water enters the tube bundle with extremely low temperature, the thermal expansion and the cold contraction caused by the temperature difference can cause the damage of the tube bundle. Meanwhile, the method has larger transformation difficulty for the existing air cooling system.

Disclosure of Invention

The invention aims to provide a partial pressure anti-freezing device and a partial pressure anti-freezing method for an indirect air cooling tower, which are used for solving the problem that a radiating pipe bundle of the air cooling tower is easy to freeze and crack in winter.

In order to achieve the above object, the present invention provides the following technical solutions.

An indirect air cooling tower partial pressure freeze-proof device comprises a plurality of partial pressure guide devices arranged on an air cooling tower sealing platform; the partial pressure flow guide device comprises an installation frame, a flow guide channel, a sealing cover plate and a driving device;

the mounting frame is fixed in a hole formed in an air cooling tower sealing platform above a heat dissipation sector of the air cooling tower; one end of the diversion channel is connected with the installation frame, and the other end of the diversion channel extends to and is fixed with an X column of the air cooling tower below the air cooling tower sealing platform;

a sliding rail is arranged on the inner side of the port of the installation frame, the sealing cover plate is of a folding structure, a sliding block is arranged at the end part of the sealing cover plate, and the sliding block is arranged in the sliding rail; the driving device is connected with the sliding block of the sealing cover plate and moves linearly along the sliding rail to drive the sealing cover plate to open or close the mounting frame port.

As a further improvement of the invention, the driving device comprises a hydraulic support, the bottom of the hydraulic support is hinged, and a hydraulic rod of the hydraulic support is connected with the sliding block of the sealing cover plate.

As a further improvement of the invention, the two sealing cover plates are arranged on two sides of the same slide rail, the two sealing cover plates are oppositely arranged on the left and right sides, the far sides of the two sealing cover plates are fixed, the near sides of the two sealing cover plates are free ends, and the two driving devices are respectively connected with one sealing cover plate.

As a further improvement of the invention, the sliding block is provided with a rolling bearing, and the rolling bearing is arranged in the sliding rail.

As a further improvement of the invention, the diversion channel is fixed with the X column of the air cooling tower through a mounting bracket.

As a further improvement of the invention, the center lines of the upper port and the lower port of the flow guide channel are perpendicular to each other.

As a further improvement of the invention, the area of the upper port of the flow guide channel is larger than that of the lower port.

As a further improvement of the invention, 2-4 partial pressure diversion devices are arranged on the air cooling tower sealing platform.

An anti-freezing method of an indirect air cooling tower partial pressure anti-freezing device comprises the following steps:

according to the condition of the cooling water temperature in the heat dissipation pipe bundle of the indirect air cooling tower, the driving device is controlled to drive the sealing cover plate to be opened or closed, so that air outside the air cooling tower flows into the inner space of the air cooling tower through the flow guide channel, and the temperature of the heat dissipation pipe bundle is controlled.

As a further improvement of the invention, the method comprises the following steps:

when the temperature of cooling water in a radiating pipe bundle of an indirect air cooling tower is reduced to an alarm value, controlling a hydraulic strut corresponding to a windward sector to reduce pressure according to real-time operation data of a power plant, and further opening a corresponding sealing cover plate to enable air outside the air cooling tower to flow into an inner space of the air cooling tower through a flow guide channel, so that the temperature of the cooling water in the radiating pipe bundle is controlled; when cold air outside the tower flows into the inner space of the air cooling tower through the partial pressure antifreezing device, the air temperature in the air cooling tower is reduced, further the overall suction force of the air cooling tower is reduced, and the diversion channel of the partial pressure antifreezing device can also play a role in sharing the suction force of the air cooling tower; at the moment, the hydraulic prop is controlled to be pressurized, the opening degree of the sealing cover plate is reduced, and the suction force acting on the radiating pipe bundle tends to be stable;

and continuously monitoring the temperature of the cooling water in the radiating pipe bundles of each sector of the air cooling tower, if the temperature of the cooling water in other sectors is lower than a warning value, controlling the hydraulic support columns of the corresponding sectors to reduce the pressure, opening the sealing cover plate, and sharing the suction force on the corresponding sectors, thereby reducing the radiating capacity of the radiating pipe bundles of the corresponding sectors and controlling the temperature of the cooling water in the pipe bundles to prevent the pipe bundles from freezing and cracking.

Compared with the prior art, the invention has the following beneficial effects:

the invention has simple structure and reliable function, and can adjust the suction force acting on the radiating pipe bundle of the air cooling tower in real time, thereby adjusting the radiating capacity of the radiating pipe bundle and preventing frost cracking. The hydraulic prop is adopted to adjust the opening and closing of the sealing cover plate, and compared with a pure mechanical linkage structure of the shutter, the hydraulic prop is more stable and reliable; and the air resistance when the sealing cover plate is fully opened is very small, and the sealing cover plate can play a remarkable partial pressure role. When the cooling water is drained from the fan section, the invention can effectively prevent the temperature of the radiating pipe bundle from being too low, thereby preventing the radiating pipe bundle from being brittle and broken and being incapable of being used again in a short time.

Furthermore, when the sudden heat dissipation pipe bundle meets the strong wind weather, the sudden heat dissipation pipe bundle can immediately react to open the sealing cover plate of the fan section to prevent the sudden heat dissipation pipe bundle from being frozen; and for the shutter, hydraulic prop and sealed apron mechanical strength are higher, can normally work under the strong wind weather. Because the partial pressure antifreezing device is arranged on the air cooling tower sealing platform, is independent of the radiating pipe bundle and does not interfere with antifreezing devices such as shutters, the partial pressure antifreezing device provided by the invention can be used together with other antifreezing devices, thereby obtaining better antifreezing effect.

Drawings

The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for facilitating the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. Those skilled in the art, having the benefit of the teachings of this invention, may choose from the various possible shapes and proportional sizes to implement the invention as a matter of case. In the drawings:

fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic diagram of the separation structure of the present invention.

Fig. 3 is a schematic view (view one) of the installation of the present invention.

Fig. 4 is a schematic view of the installation of the present invention (view two).

Wherein: 1-bolt, 2-installation frame, 3-hydraulic prop 3, 4-diversion channel, 5-sealing cover plate 5, 6-rolling bearing 6, 7-sliding rail, 8-installation frame, 9-hinge shaft, 10-hinge fixing block, 11-air cooling tower body, 12-air cooling tower sealing platform 12, 13-air cooling tower X column.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be described below in detail and completely with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not a whole embodiment. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The invention relates to an air cooling tower partial pressure anti-freezing device which is arranged at an air cooling tower sealing platform 12 between an original air cooling tower tube bundle and a tower body, wherein the air cooling tower sealing platform 12 is originally a circular steel structure for sealing a gap between a heat dissipation tube bundle and the tower body and is used for concentrating the suction force of an air cooling tower on the heat dissipation tube bundle.

As shown in fig. 1 to 4, an object of the present invention is to provide an indirect air cooling tower partial pressure antifreeze apparatus, which comprises a plurality of partial pressure heat sinks installed on an air cooling tower sealing platform 12; the partial pressure heat dissipation device comprises an installation frame 2, a flow guide channel 4, a sealing cover plate 5 and a driving device;

the mounting frame 2 is fixed in a hole formed in an air cooling tower sealing platform 12 of a windward sector; one end of the diversion channel 4 is connected with the mounting frame 2, and the other end of the diversion channel extends to an X column of the air cooling tower below the air cooling tower sealing platform 12 and is fixed with the X column of the air cooling tower.

A sliding rail 7 is arranged on the inner side of the port of the mounting frame 2, the sealing cover plate 5 is of a folding structure, a sliding block is arranged at the end part of the sealing cover plate 5, and the sliding block is arranged in the sliding rail 7; the driving device is connected with the sliding block of the sealing cover plate 5 and moves linearly along the sliding rail 7 to drive the sealing cover plate 5 to open or close the port of the installation frame 2.

In a preferred embodiment, the driving device comprises a hydraulic prop 3, the bottom of the hydraulic prop 3 is hinged, and a hydraulic rod of the hydraulic prop 3 is connected with a slide block of the sealing cover plate 5.

As a preferred embodiment, the number of the sealing cover plates 5 is two, the two sealing cover plates 5 are arranged on two sides of the same sliding rail 7, the two sealing cover plates 5 are split left and right, one sides, far away from the two sealing cover plates 5, of the two sealing cover plates are fixed, the sides, close to the two sealing cover plates, of the two sealing cover plates are free ends, and the two driving devices are respectively connected with one sealing cover plate 5. The accurate control of aperture can be realized, for example through the length relation of hydraulic pressure degree and slide rail, accurate control aperture can be carried out, and then control the intake.

Preferably, a rolling bearing 6 is arranged on the sliding block, and the rolling bearing 6 is arranged in the sliding rail 7. And the flow guide channel 4 is fixed with an X column of the air cooling tower through a mounting bracket 8.

In order to better ensure the ventilation effect, the center lines of the upper and lower ports of the flow guide channel 4 are perpendicular to each other. The area of the upper port of the flow guide channel 4 is larger than that of the lower port. 2-4 installation frames 2 are arranged on the air cooling tower sealing platform 12 of each sector of the air cooling tower.

The anti-freezing pressure divider provided by the invention is characterized in that a rectangular hole is formed in an air cooling tower sealing platform 12, 2-4 holes are formed in each air cooling sector, an inlet of the anti-freezing device (namely the position of a sealing cover plate 5) is arranged in the rectangular hole, and an outlet of the anti-freezing device is fixed on an X column of the air cooling tower. One end of a hydraulic strut 3 in the anti-freezing device is fixed on the outer side of the flow guide device through a rolling bearing 6, the other end of the hydraulic strut is fixed on a sealing cover plate 5 through the rolling bearing 6, when the hydraulic strut 3 is pressurized, the sealing cover plate 5 can be folded towards two sides, and outside air can flow into the air cooling tower from the rectangular opening. 2-4 anti-freezing devices are arranged in each sector, so that the integral partial pressure anti-freezing device of the air cooling tower is formed.

Based on the partial pressure antifreezing device, the invention provides an air cooling tower partial pressure antifreezing method, according to the cooling water temperature condition in a radiating pipe bundle of an indirect air cooling tower, a driving device is controlled to drive a sealing cover plate 5 to open or close, so that air outside the air cooling tower flows into the internal space of the air cooling tower through a flow guide channel 4, and the temperature of the radiating pipe bundle is controlled.

The method specifically comprises the following steps:

(1) after the installation of the partial pressure antifreezing device of the air cooling tower is completed, the partial pressure antifreezing device is started when the temperature of circulating water in the radiating pipe bundle is lower than a warning value according to the operation data of a power plant. Meanwhile, according to the real-time wind direction and wind speed data of the power plant, the hydraulic struts 3 corresponding to the windward fan sections are decompressed, the sealing cover plate 5 is opened, air flows into the air cooling tower, the suction force acting on the heat dissipation pipe bundle is shared, and the air flow passing through the heat dissipation pipe bundle is reduced;

(2) after the outside air is introduced into the air cooling tower by the anti-freezing device, the air temperature in the tower is gradually reduced, the suction force generated by the air density difference is also gradually reduced, and at the moment, the hydraulic prop 3 is controlled to be properly pressurized, so that the suction force acting on the tube bundle is kept stable;

(3) and continuously monitoring the circulating water temperature in each sector heat dissipation pipe bundle, and after finding that the water temperature is lower than the sector of the warning line, controlling the hydraulic support 3 of the corresponding sector to reduce the pressure, opening the sealing cover plate 5, reducing the air flow of the sector pipe bundle, and playing a role in protecting the pipe bundle from frost cracking.

According to the technical scheme, as shown in fig. 1 to 4, the invention provides the partial pressure antifreezing device and the partial pressure antifreezing method for the air cooling tower.

Examples

The invention provides a partial pressure anti-freezing device of an air cooling tower, which comprises the following components:

first, rectangular holes are formed in the air cooling tower sealing platform 12, and 2 to 4 rectangular holes are formed in the air cooling tower sealing platform 12 above each sector correspondingly. Then, the mounting frame 2 is installed in the opened rectangular hole by using the bolt 1, then, the other components except the mounting bracket 8 are installed in the mounting frame 2 by using the bolt 1, and finally, the whole device is further fixed on the X column 13 of the air cooling tower by using the mounting bracket 8 through the bolt 1. Wherein one end of the hydraulic prop 3 is connected on the sealing cover plate 5, the other end is connected on the outer surface of the flow guide channel 4, and the other end of the sealing cover plate 5 is connected on the sliding rail 7 through the rolling bearing 6. The sealing cover plates 5 are opened in a mode of being split left and right, and the two sealing cover plates 5 on each side are installed together with the hinge fixing block 10 through the hinge shaft 9. The components jointly form a partial pressure heat dissipation device on one side of a single sector, 2-4 single partial pressure heat dissipation devices are mounted on the air cooling tower sealing platform 12 above each sector, and the single partial pressure heat dissipation devices of all the sectors of the whole air cooling tower are combined together to form the integral partial pressure heat dissipation device of the air cooling tower.

The working process of the invention is as follows:

when the cooling water temperature in the radiating pipe bundle is reduced to the warning value, according to the real-time operation data of a power plant, the hydraulic support 3 corresponding to the windward sector is controlled to reduce the pressure, and then the corresponding sealing cover plate 5 is opened, the air outside the air cooling tower flows into the inner space of the air cooling tower through the diversion channel 4 at the moment, because a region with very small resistance appears in the air cooling tower at the moment, the suction force acting on the radiating pipe bundle can be shunted, the air flow flowing through the radiating pipe bundle is reduced, the radiating capacity is further reduced, and the cooling water temperature in the radiating pipe bundle is controlled. When cold air outside the tower flows into the inner space of the air cooling tower, the air temperature in the air cooling tower is reduced, and further the overall suction force of the air cooling tower is reduced, at the moment, the hydraulic support 3 is controlled to be properly pressurized, the opening degree of the sealing cover plate 5 is reduced, and the suction force acting on the radiating pipe bundle tends to be stable.

Further, the temperature of the cooling water in the radiating pipe bundles of each sector of the air cooling tower is continuously monitored, if the temperature of the cooling water in other sectors is lower than a warning value, the hydraulic support columns 3 of the corresponding sectors are controlled to reduce the pressure, the sealing cover plates 5 are opened, the suction force on the corresponding sectors is shared, the radiating capacity of the radiating pipe bundles of the corresponding sectors is further reduced, the temperature of the cooling water in the pipe bundles is controlled, and the pipe bundles are prevented from being frozen and cracked.

It should be noted that, in the description of the present invention, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no precedence between the two is considered as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided would be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of subject matter that is disclosed herein is not intended to forego such subject matter, nor should the applicant consider that such subject matter is not considered part of the disclosed subject matter.