Cooling triangular unit with anti-freezing device

Abstract

The utility model discloses a cooling triangular unit with an anti-freezing device. The cooling triangular unit comprises the anti-freezing device and a cooling triangular unit body. The cooling triangular unit comprises a left side cooling column, a right side cooling column and an air inlet shutter; the anti-freezing device comprises a vertical fixing shaft, an upper horizontal slide way, a lower horizontal slide way, a roller shutter and a vertical moving shaft; an anti-freezing device and a cooling column of a cooling triangle unit are arranged in parallel, in low-temperature weather in winter, heat preservation of the cooling column is not timely, pipe bundle frost cracking is prone to occurring, normal operation of the cooling column is affected, and an existing cooling triangle anti-freezing device is installed on the outer side of a louver and can meet the anti-freezing requirement. However, the heat exchange effect of the cooling triangle is influenced to a certain extent; according to the cooling triangle unit with the anti-freezing device, the anti-freezing device is installed on the cooling column of the cooling triangle unit, the anti-freezing requirement is met, meanwhile, the heat exchange performance of a cooling triangle is not affected, and the economical efficiency of an indirect cooling unit is improved.

Description

Technical Field

[0001] The utility model belongs to the field of natural ventilation indirect air cooling towers in thermal / nuclear power plants, and particularly relates to a cooling triangle unit with an antifreeze device. Background Art

[0002] The natural ventilation direct air cooling system or the natural ventilation indirect air cooling system cools the circulating water through the ambient wind. The cooling performance of the natural ventilation air cooling system is easily affected by the ambient wind. The stability and uniformity of the internal air volume of the cooling triangle unit as the core component of the air cooling system are important factors that determine the heat exchange performance of the cooling triangle unit. Usually, the lowest wall temperature of the cooling column occurs in the tube bundle close to the louver side. In low temperature weather in winter, the tube bundle is prone to freezing and cracking, affecting the normal operation of the cooling column.

[0003] The Chinese patent application, application number CN202010612750.X, discloses an indirect air-cooling tower antifreeze device antifreeze unit including a support frame, an anti-suction net, a guide rail, a roller shutter, a roller shutter box, an anti-fall cable and an anti-fall cable reel. The anti-fall cable reel is sleeved on the roller shutter motor output shaft, and the upper end of the anti-fall cable is fixed on the upper crossbeam of the support frame; the roller shutter box is provided with a roller shutter motor, a roller shutter shaft and a reel, the roller shutter motor output shaft is drive-connected to one end of the roller shutter shaft; the other end of the roller shutter shaft is drive-connected to the reel shaft; the upper end of the roller shutter passes through the roller shutter box and is fixed by the upper crossbeam; two pulleys extending outward are respectively provided on both sides of the roller shutter box, and the roller shutter box is embedded in the guide rails on both sides through the pulleys to enable the roller shutter box to move up and down along the guide rails. The antifreeze unit includes a support frame fixed on the triangular column of the cooling triangle unit. The utility model provides a very complete antifreeze measure for the antifreeze of intercooling units in high-altitude cold areas, and also fills the gap in antifreeze operation experience in high-altitude cold areas.

[0004] The above-mentioned utility model provides an antifreeze solution for an indirect cooling unit, which protects the cooling triangle from freezing and keeps it warm by adding roller shutters on the outside of the cooling triangle louvers. Although this solution can meet the antifreeze requirements of the cooling triangle, the antifreeze unit will reduce the air inlet area of ​​the cooling triangle louvers and reduce the air inlet volume of the cooling triangle. Therefore, the antifreeze solution adopted will affect the heat exchange of the cooling triangle to a certain extent. The utility model provides a cooling triangle unit with an antifreeze device, which installs an antifreeze device on the cooling column of the cooling triangle unit. The antifreeze device is arranged parallel to the cooling column of the cooling triangle unit, and only the area of ​​the cooling column with the lowest wall temperature prone to freezing is protected, thereby adjusting the heat exchange of different areas of the cooling column; the left cooling column, the right cooling column and the air inlet louvers intersect to form a triangular space, and the antifreeze device installed on the cooling column does not change the air inlet area and air inlet volume of the cooling triangle louvers, thereby meeting the antifreeze requirements while not affecting the heat exchange performance of the cooling triangle, thereby improving the economy of the indirect cooling unit. Summary of the Invention

[0005] The purpose of the utility model is to solve the anti-freezing problem of the cooling triangle of the indirect cooling unit when it is running in winter. The utility model is a cooling triangle unit with an anti-freezing device. The anti-freezing device is installed on the cooling column, and the expansion area of ​​the roller curtain in the anti-freezing device is controlled to achieve heat preservation of the cooling column, thereby avoiding the problem that the cooling column cannot be used normally due to freezing and cracking.

[0006] A cooling triangle unit with an antifreeze device includes an antifreeze device and a cooling triangle unit, and is characterized in that: the cooling triangle unit includes a left cooling column, a right cooling column, and an air inlet louver; the antifreeze device includes a vertical fixed shaft, an upper horizontal slide, a lower horizontal slide, a roller shutter, and a vertical movable shaft; the antifreeze device is arranged parallel to the cooling column of the cooling triangle unit.

[0007] The left cooling column, the right cooling column and the air inlet louver are connected to form a triangular space. An upper sealing plate is provided on the top of the cooling triangle unit, and a lower sealing plate is provided on the bottom of the cooling triangle unit.

[0008] The distance between the top end of the antifreeze device and the upper sealing plate on the top of the cooling triangle unit is Hn, 0≤Hn≤1 / 2H, and the distance between the bottom end of the antifreeze device and the lower sealing plate on the bottom of the cooling triangle unit is Hz, 0≤Hz<1 / 2H, where H is the height of the cooling column.

[0009] The horizontal and vertical distance between the innermost end of the antifreeze device and the inner end of the cooling column is Ln, 0≤Ln≤1 / 2L, and the horizontal and vertical distance between the outermost end of the antifreeze device and the outer end of the cooling column is Lw, 0≤Lw≤1 / 5L, where L is the length of the cooling column.

[0010] The vertically arranged antifreeze device comprises an independent control system, which can adjust the length of the roller blind of the antifreeze device in the horizontal direction at will.

[0011] The upper horizontal slide is installed at the top of the antifreeze device, and the lower horizontal slide is installed at the bottom of the antifreeze device. The upper horizontal slide and the lower horizontal slide both extend along the length direction of the cooling column by a distance Ld, where Ld=L-Ln-Lw.

[0012] The fixed end of the rolling curtain of the antifreeze device is installed on the vertical fixed shaft, and the movable end of the rolling curtain of the antifreeze device is installed on the vertical movable shaft.

[0013] The vertical moving axis of the antifreeze device moves horizontally along the upper horizontal slide and the lower horizontal slide to control the rolling curtain expansion area. The rolling curtain expansion area of ​​the antifreeze device is Y, 0≤Y≤100%. When the rolling curtain expansion area of ​​the antifreeze device is 0, the rolling curtain is completely retracted. When the rolling curtain expansion area of ​​the antifreeze device is 100%, the rolling curtain is fully expanded.

[0014] The rolling curtain of the antifreeze device is provided with ventilation holes, and the porosity of the rolling curtain is δ, 0≤δ≤0.7.

[0015] The utility model discloses a cooling triangle unit with an antifreeze device, comprising the antifreeze device and the cooling triangle unit, the cooling triangle unit comprising a left cooling column, a right cooling column, and air inlet louvers, the antifreeze device comprising a vertical fixed shaft, an upper horizontal slide, a lower horizontal slide, a roller shutter, and a vertical movable shaft, the antifreeze device and the cooling columns of the cooling triangle unit are arranged in parallel, in winter when the temperature is low, if the cooling columns are not kept warm in time, the tube bundles are very likely to freeze and crack, affecting the normal operation of the cooling columns, the existing cooling triangle antifreeze device is installed on the outside of the louvers, which can meet the antifreeze requirements, but affects the heat exchange effect of the cooling triangle to a certain extent; the utility model provides a cooling triangle unit with an antifreeze device, by installing the antifreeze device on the cooling columns of the cooling triangle unit, meeting the antifreeze requirements without affecting the heat exchange performance of the cooling triangle, thereby improving the economy of the indirect cooling unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of a cooling triangle unit with an antifreeze device.

[0017] Figure 2 This is a schematic structural plan view of a cooling triangle unit with an antifreeze device.

[0018] Figure 3 This is a structural plan diagram of a cooling triangle unit with an antifreeze device, in which the distance between the outermost end of the antifreeze device and the outer end of the cooling column is 0.

[0019] Figure 4 The figure is a schematic structural plan view of an antifreeze device of a cooling triangle unit with an antifreeze device.

[0020] Figure 5 This is a schematic diagram of a cooling triangle unit for a rolling shutter with a ventilation hole antifreeze device.

[0021] In the figure: 1—cooling triangle unit, 2—antifreeze device, 3—air inlet louver, 4—rolling curtain, 5—right cooling column, 6—left cooling column, 7—upper sealing plate, 8—lower sealing plate, 9—top end of antifreeze device, 10—bottom end of antifreeze device, 11—outer end of cooling column, 12—inner end of cooling column, 13—cooling column, 14—upper horizontal slide, 15—lower horizontal slide, 16—vertical fixed axis, 17—vertical movable axis. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figure 1-4As shown, a cooling triangle unit with an antifreeze device includes an antifreeze device 2 and a cooling triangle unit 1, characterized in that: the cooling triangle unit 1 includes a left cooling column 6, a right cooling column 5, and an air inlet louver 3, the antifreeze device 2 includes a vertical fixed shaft 16, an upper horizontal slide 14, a lower horizontal slide 15, a roller shutter 4, and a vertical movable shaft 17, the antifreeze device 2 is arranged parallel to the cooling column 13 of the cooling triangle unit 1; the antifreeze device 2 is installed on the cooling column 13 of the cooling triangle unit 1; the upper horizontal slide 14 is installed on the top of the antifreeze device 2, and the lower horizontal slide 15 is installed at the bottom of the antifreeze device 2; the vertical fixed shaft 16 is fixed between the upper horizontal slide 14 and the lower horizontal slide 15 The vertical movable shaft 17 is located between the upper horizontal slide 14 and the lower horizontal slide 15, and can move horizontally along the upper horizontal slide 14 and the lower horizontal slide 15; the fixed end of the roller shutter 4 is connected to the vertical fixed shaft 16, and the movable end of the roller shutter 4 is connected to the vertical movable shaft 17 and moves horizontally with the vertical movable shaft 17; the left cooling column 6, the right cooling column 5 and the air inlet louver 3 intersect to form a triangular space, the top of the cooling triangle unit is provided with an upper sealing plate 7, and the bottom of the cooling triangle unit is provided with a lower sealing plate 8; the distance between the top of the antifreeze device 2 and the upper sealing plate 7 on the top of the cooling triangle unit is Hn, 0≤Hn≤1 / 2H, and the bottom end of the antifreeze device 2 is distanced from the lower sealing plate at the bottom of the cooling triangle unit 8 is Hz, 0≤Hz<1 / 2H, H is the height of the cooling column 13; the horizontal and vertical distance between the innermost end of the antifreeze device 2 and the inner end 12 of the cooling column is Ln, 0≤Ln≤1 / 2L, the horizontal and vertical distance between the outermost end of the antifreeze device 2 and the outer end 11 of the cooling column is Lw, 0≤Lw≤1 / 5L, L is the length of the cooling column 13; the vertically arranged antifreeze device 2 includes an independent control system, which can arbitrarily adjust the expansion area of ​​the roller shutter 4 of the antifreeze device 2 in the horizontal direction; the upper horizontal slide 14 and the lower horizontal slide 15 extend along the length direction of the cooling column by a distance Ld, Ld=L-Ln-Lw; the fixed end of the roller shutter 4 of the antifreeze device 2 is installed on the vertical fixed shaft 16 On the top, the moving end of the roller shutter 4 of the antifreeze device is installed on the vertical moving shaft 17; the vertical moving shaft 17 of the antifreeze device moves horizontally along the upper horizontal slide 14 and the lower horizontal slide 15 to control the expansion area of ​​the roller shutter. The expansion area of ​​the roller shutter 4 of the antifreeze device is Y, 0≤Y≤100%. When the expansion area of ​​the roller shutter 4 of the antifreeze device is 0, the roller shutter 4 is completely retracted. When the expansion area of ​​the roller shutter 4 of the antifreeze device is 100%, the roller shutter 4 is fully expanded. When the roller shutter 4 of the antifreeze device moves horizontally along the vertical moving shaft 17 and expands, it blocks the low-temperature area of ​​the cooling column 13, thereby reducing the heat exchange effect of the blocked area of ​​the cooling column 13, so that the temperature of the cooling column 13 in the area increases, thereby achieving the antifreeze effect.The left and right cooling columns 13 and the air inlet louvers 3 on the cooling triangle unit 1 intersect to form a triangular space. When the antifreeze device 2's roller shutter 4 is deployed, it only partially blocks the cooling columns 13, leaving the air inlet area and air volume of the air inlet louvers 3 unchanged. As a result, the overall air volume of the cooling triangle unit 1 remains unchanged, thus unaffecting the heat exchange performance of the cooling triangle unit 1. The antifreeze device's roller shutter 4 is provided with ventilation holes, and the porosity of the roller shutter 4 is δ, where 0≤δ≤0.7.

[0024] Example 1 A cooling triangle unit with an antifreeze device.

[0025] like Figure 1-4As shown, a cooling triangle unit with an antifreeze device includes an antifreeze device 2 and a cooling triangle unit 1, characterized in that: the cooling triangle unit 1 includes a left cooling column 6, a right cooling column 5, and an air inlet louver 3, the antifreeze device 2 includes a vertical fixed shaft 16, an upper horizontal slide 14, a lower horizontal slide 15, a roller shutter 4, and a vertical movable shaft 17, the antifreeze device 2 is arranged parallel to the cooling column 13 of the cooling triangle unit 1; the antifreeze device 2 is installed on the cooling column 13 of the cooling triangle unit 1; the upper horizontal slide 14 is installed on the top of the antifreeze device 2, and the lower horizontal slide 15 is installed at the bottom of the antifreeze device 2; the vertical fixed shaft 16 is fixed between the upper horizontal slide 14 and the lower horizontal slide 15; the vertical movable shaft 17 is located between the upper horizontal slide 14 and the lower horizontal slide 15, and can move horizontally along the upper horizontal slide 14 and the lower horizontal slide 15; the fixed end of the roller shutter 4 is connected to the vertical fixed shaft 16, and the movable end of the roller shutter 4 is connected to the vertical movable shaft 17 is connected and moves horizontally along the vertical moving axis 17; the left cooling column 6, the right cooling column 5 and the air inlet louver 3 intersect to form a triangular space, the top of the cooling triangle unit is provided with an upper sealing plate 7, and the bottom of the cooling triangle unit is provided with a lower sealing plate 8; the distance between the top of the antifreeze device 2 and the upper sealing plate 7 at the top of the cooling triangle unit is 3m, and the distance between the bottom of the antifreeze device 2 and the lower sealing plate 8 at the bottom of the cooling triangle unit is 1.5m. H is the height of the cooling column 13, which is 15m; the horizontal and vertical distance between the innermost end of the antifreeze device 2 and the inner end 12 of the cooling column is 1.1m, and the horizontal and vertical distance between the outermost end of the antifreeze device 2 and the outer end 11 of the cooling column is 0.2m. L is the length of the cooling column 13, which is 2.4m. The vertically arranged antifreeze device 2 includes an independent control system that can arbitrarily adjust the expansion area of ​​the roller shutter 4 of the antifreeze device 2 in the horizontal direction; the upper horizontal slide 14 and the lower horizontal slide 15 both extend along the length of the cooling column for a distance of 1.1m, the fixed end of the roller shutter 4 of the antifreeze device 2 is installed on the vertical fixed shaft 16, and the movable end of the roller shutter 4 of the antifreeze device is installed on the vertical movable shaft 17; the vertical movable shaft 17 of the antifreeze device moves horizontally along the upper horizontal slide 14 and the lower horizontal slide 15 to control the unfolding area of ​​the roller shutter. The unfolding area of ​​the roller shutter 4 of the antifreeze device is Y, 0≤Y≤100%, when the unfolding area of ​​the roller shutter 4 of the antifreeze device is 0, the roller shutter 4 is completely retracted, and when the unfolding area of ​​the roller shutter 4 of the antifreeze device is 100%, the roller shutter 4 is completely unfolded; when the roller shutter 4 of the antifreeze device moves horizontally along the vertical movable shaft 17 and unfolds, the cooling The low-temperature areas of the cooling columns 13 are shielded, thereby reducing the heat exchange efficiency in the shielded areas of the cooling columns 13, causing the temperature of the cooling columns 13 in these areas to rise, achieving an antifreeze effect. The cooling columns 13 on the left and right sides of the cooling triangle unit 1 intersect with the air inlet louvers 3 to form a triangular space. When the roller shutter 4 of the antifreeze device 2 is deployed, it only shields part of the cooling columns 13, without changing the air inlet area and air volume of the air inlet louvers 3. As a result, the overall air volume of the cooling triangle unit 1 remains unchanged, thus not affecting the heat exchange performance of the cooling triangle unit 1. The roller shutter 4 of the antifreeze device is provided with ventilation holes, and the porosity of the roller shutter 4 is 0.

[0026] The utility model discloses a cooling triangle unit with an antifreeze device. By installing the antifreeze device on the cooling column of the cooling triangle unit, the antifreeze function is not affected while the heat exchange performance of the cooling triangle is achieved, thereby improving the economy of the indirect cooling unit.

[0027] Example 2 A cooling triangle unit of an antifreeze device with a rolling curtain porosity of 0.4.

[0028] like Figure 1 、 Figure 5As shown, a cooling triangle unit with an antifreeze device includes an antifreeze device 2 and a cooling triangle unit 1, characterized in that: the cooling triangle unit 1 includes a left cooling column 6, a right cooling column 5, and an air inlet louver 3, the antifreeze device 2 includes a vertical fixed shaft 16, an upper horizontal slide 14, a lower horizontal slide 15, a roller shutter 4, and a vertical movable shaft 17, the antifreeze device 2 is arranged parallel to the cooling column 13 of the cooling triangle unit 1; the antifreeze device 2 is installed on the cooling column 13 of the cooling triangle unit 1; the upper horizontal slide 14 is installed on the top of the antifreeze device 2, and the lower horizontal slide 15 is installed at the bottom of the antifreeze device 2; the vertical fixed shaft 16 is fixed between the upper horizontal slide 14 and the lower horizontal slide 15; the vertical movable shaft 17 is located between the upper horizontal slide 14 and the lower horizontal slide 15, and can move horizontally along the upper horizontal slide 14 and the lower horizontal slide 15; the fixed end of the roller shutter 4 is connected to the vertical fixed shaft 16, and the movable end of the roller shutter 4 is connected to the vertical movable shaft The cooling system 13 is connected to the cooling system 13 by the shaft 17 and moves horizontally along the vertical axis 17. The left cooling column 6, the right cooling column 5 and the air inlet louver 3 intersect to form a triangular space. The top of the cooling triangle unit is provided with an upper sealing plate 7, and the bottom of the cooling triangle unit is provided with a lower sealing plate 8. The distance between the top of the antifreeze device 2 and the upper sealing plate 7 at the top of the cooling triangle unit is 4.2 meters, and the distance between the bottom of the antifreeze device 2 and the lower sealing plate 8 at the bottom of the cooling triangle unit is 0 meters. H is the height of the cooling column 13, which is 18 meters. The horizontal and vertical distance between the innermost end of the antifreeze device 2 and the inner end 12 of the cooling column is 1.5 meters, and the horizontal and vertical distance between the outermost end of the antifreeze device 2 and the outer end 11 of the cooling column is 0 meters. L is the length of the cooling column 13, which is 2.4 meters. The vertically arranged antifreeze device 2 includes an independent control system that can arbitrarily adjust the deployment area of ​​the roller shutter 4 of the antifreeze device 2 in the horizontal direction. The upper horizontal slide 14 and the lower horizontal slide 15 both extend along the length of the cooling column for a distance of 0.9m, the fixed end of the roller shutter 4 of the antifreeze device 2 is installed on the vertical fixed shaft 16, and the movable end of the roller shutter 4 of the antifreeze device is installed on the vertical movable shaft 17; the vertical movable shaft 17 of the antifreeze device moves horizontally along the upper horizontal slide 14 and the lower horizontal slide 15 to control the unfolding area of ​​the roller shutter. The unfolding area of ​​the roller shutter 4 of the antifreeze device is Y, 0≤Y≤100%, when the unfolding area of ​​the roller shutter 4 of the antifreeze device is 0, the roller shutter 4 is completely retracted, and when the unfolding area of ​​the roller shutter 4 of the antifreeze device is 100%, the roller shutter 4 is completely unfolded; when the roller shutter 4 of the antifreeze device moves horizontally along the vertical movable shaft 17 and unfolds, the cooling column The low-temperature area of ​​the cooling column 13 is blocked, thereby reducing the heat exchange effect in the blocked area of ​​the cooling column 13, causing the temperature of the cooling column 13 in this area to rise, achieving an antifreeze effect. The cooling columns 13 on the left and right sides of the cooling triangle unit 1 intersect with the air inlet louvers 3 to form a triangular space. When the roller shutter 4 of the antifreeze device 2 is deployed, it only blocks part of the cooling column 13 area, without changing the air inlet area and air volume of the air inlet louvers 3. As a result, the overall air inlet volume of the cooling triangle unit 1 remains unchanged, and thus does not affect the heat exchange performance of the cooling triangle unit 1. The roller shutter 4 of the antifreeze device is provided with ventilation holes, and the porosity of the roller shutter 4 is 0.4.

[0029] By arranging ventilation holes on the rolling curtain, it can not only keep the cooling column warm, but also improve the heat exchange effect of the cooling column and improve the economy of the cooling column.

[0030] The utility model discloses a cooling triangle unit with an antifreeze device, comprising the antifreeze device and the cooling triangle unit, the cooling triangle unit comprising a left cooling column, a right cooling column, and air inlet louvers, the antifreeze device comprising a vertical fixed shaft, an upper horizontal slide, a lower horizontal slide, a roller shutter, and a vertical movable shaft, the antifreeze device and the cooling columns of the cooling triangle unit are arranged in parallel, in winter when the temperature is low, if the cooling columns are not kept warm in time, the tube bundles are very likely to freeze and crack, affecting the normal operation of the cooling columns, the existing cooling triangle antifreeze device is installed on the outside of the louvers, which can meet the antifreeze requirements, but affects the heat exchange effect of the cooling triangle to a certain extent; the utility model provides a cooling triangle unit with an antifreeze device, by installing the antifreeze device on the cooling columns of the cooling triangle unit, meeting the antifreeze requirements without affecting the heat exchange performance of the cooling triangle, thereby improving the economy of the indirect cooling unit.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary implementation cases, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention; therefore, no matter from which point of view, the implementation cases should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0032] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A cooling triangle unit with an antifreeze device, comprising an antifreeze device and a cooling triangle unit, characterized in that: The cooling triangle unit includes a left cooling column, a right cooling column, and an air inlet louver. The antifreeze device includes a vertical fixed shaft, an upper horizontal slide, a lower horizontal slide, a roller shutter, and a vertical movable shaft. The antifreeze device is arranged parallel to the cooling column of the cooling triangle unit.

2. The cooling triangle unit with an antifreeze device according to claim 1, characterized in that: The left cooling column, the right cooling column and the air inlet louver are connected to form a triangular space. An upper sealing plate is provided on the top of the cooling triangle unit, and a lower sealing plate is provided on the bottom of the cooling triangle unit.

3. The cooling triangle unit with an antifreeze device according to claim 1, characterized in that: The distance between the top end of the antifreeze device and the upper sealing plate on the top of the cooling triangle unit is Hn, 0≤Hn≤1 / 2H, and the distance between the bottom end of the antifreeze device and the lower sealing plate on the bottom of the cooling triangle unit is Hz, 0≤Hz<1 / 2H, where H is the height of the cooling column.

4. The cooling triangle unit with an antifreeze device according to claim 1, characterized in that: The horizontal and vertical distance between the innermost end of the antifreeze device and the inner end of the cooling column is Ln, 0≤Ln≤1 / 2L, and the horizontal and vertical distance between the outermost end of the antifreeze device and the outer end of the cooling column is Lw, 0≤Lw≤1 / 5L, where L is the length of the cooling column.

5. The cooling triangle unit with an antifreeze device according to claim 1, characterized in that: The vertically arranged antifreeze device comprises an independent control system, which can adjust the length of the roller blind of the antifreeze device in the horizontal direction at will.

6. The cooling triangle unit with an antifreeze device according to claim 1, characterized in that: The upper horizontal slide is installed at the top of the antifreeze device, and the lower horizontal slide is installed at the bottom of the antifreeze device. The upper horizontal slide and the lower horizontal slide both extend along the length direction of the cooling column by a distance Ld, where Ld=L-Ln-Lw.

7. The cooling triangle unit with an antifreeze device according to claim 1, characterized in that: The fixed end of the rolling curtain of the antifreeze device is installed on the vertical fixed shaft, and the movable end of the rolling curtain of the antifreeze device is installed on the vertical movable shaft.

8. The cooling triangle unit with an antifreeze device according to claim 1, characterized in that: The vertical moving axis of the antifreeze device moves horizontally along the upper horizontal slide and the lower horizontal slide to control the rolling curtain expansion area. The rolling curtain expansion area of ​​the antifreeze device is Y, 0≤Y≤100%. When the rolling curtain expansion area of ​​the antifreeze device is 0, the rolling curtain is completely retracted. When the rolling curtain expansion area of ​​the antifreeze device is 100%, the rolling curtain is fully expanded.

9. The cooling triangle unit with an antifreeze device according to claim 1, characterized in that: The rolling curtain of the antifreeze device is provided with ventilation holes, and the porosity of the rolling curtain is δ, 0≤δ≤0.7.

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