Cooling triangular unit for improving overall humidifying and pre-cooling effects of air on two sides

Abstract

A cooling triangular unit for improving the overall humidifying and pre-cooling effect of air on the two sides comprises a cooling triangular unit body, an air inlet spray pre-cooling device and an atomization isolation device, and is characterized in that the cooling triangular unit body comprises a left side cooling column, a right side cooling column and an air inlet shutter; the left side cooling column, the right side cooling column and the air inlet shutter form a cooling triangular space; the air inlet spray precooling device is vertically arranged in parallel to the vertical center line of the air inlet shutter and comprises a spray pipeline, a left atomizing nozzle and a right atomizing nozzle; the atomization isolation device is vertically arranged along the center line of the cooling triangle, divides the space of the cooling triangle into two symmetrical parts, isolates the middle of pre-cooling water sprayed by the left side atomization nozzle and the right side atomization nozzle, improves the uniformity of the flow-equalizing atomization water amount on the left side and the right side, forms a water film on the atomization isolation device, and improves the cooling effect of the cooling triangle. When air passes through the atomization isolation device, evaporation heat exchange is carried out between the air and the water film, and the overall pre-cooling and humidifying effect of the cooling triangle is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy and power engineering equipment, and particularly relates to a cooling triangle unit capable of improving the overall humidification and pre-cooling effect of air on both sides. Background Art

[0002] Cooling towers are essential components of the turbine cold-end system, and their cooling effectiveness plays a crucial role in the economic benefits of a power plant. A degraded cooling tower performance will cause the temperature of the cooling water to rise, reducing the condenser vacuum and narrowing the temperature difference in the turbine's thermal cycle, ultimately impacting power generation efficiency.

[0003] In my country, coal resources are primarily concentrated in the water-scarce Three Norths. Consequently, indirect air cooling systems have gained widespread adoption in these water-scarce regions due to their superior water-saving performance and low maintenance requirements. However, compared to wet cooling systems, indirect air cooling performance is significantly affected by ambient temperature and crosswinds. Cooling capacity decreases significantly during high winds and high temperatures in the summer, when electricity demand peaks, severely impacting the economic profitability of power plants.

[0004] In order to improve the unit's load-carrying capacity during the peak summer period, for the indirect air cooling system, an atomizing device is installed in the cooling triangle of the intercooling tower to pre-cool the air entering the indirect air cooling tower. This can effectively reduce the unit's back pressure under high-load conditions in summer, improve the unit's heat exchange efficiency, and enhance the unit's load-carrying capacity.

[0005] Chinese patent application number: 202320989165.0, proposes a spray cooling device for an indirect cooling tower radiator, which sprays water to the air inlet of the radiator by setting a water branch pipe and a nozzle, plays the role of evaporation and heat absorption, thereby reducing the ambient temperature of the radiator, and then improving the vacuum degree of the condenser; the patent drives the arc frame up and down by setting a telescopic drive rod, and then drives the water branch pipe to move up and down, thereby achieving water spray cooling of the radiator, and also can achieve spray cleaning treatment of the radiator, thereby increasing the heat dissipation efficiency of the radiator; but indirect cooling towers are actually mostly in windy areas When operating in an environmental environment, under the environmental side wind, the air intake of the cooling columns on the left and right sides of the cooling triangle is uneven, the raindrops sprayed by the spray device are extremely small, and the environmental side wind blows directly on the cooling column on the windward side, while the air intake of the cooling column on the other side is relatively small, which causes the mist droplets to be easily carried away by the environmental side wind, resulting in a large amount of atomized pre-cooling water in the incoming air of the windward cooling column, while the amount of atomized pre-cooling water in the incoming air of the leeward cooling column is small, and the humidification and pre-cooling effects of the air intake of the cooling columns on both sides are uneven, which reduces the overall pre-cooling and humidification effect of the air intake in the cooling triangle space, weakens the spray pre-cooling effect, and affects the overall cooling performance of the cooling triangle.

[0006] Chinese patent application number: 201410186560.0, proposes a Harmon type indirect air cooling spray cooling system, comprising: a water tank (1), an inlet pipe (2), a centrifugal pump (3), an outlet pipe (4) and a spray pipe (12); wherein the inflow end of the centrifugal pump (3) is connected to the water tank (1) via the inlet pipe (2), and the outflow end of the centrifugal pump (3) is connected to the spray pipe via the outlet pipe (4); and the spray pipe (12) is arranged at the opening side of the cooling triangle unit along the length direction of the cooling triangle unit, and the two ends of the spray pipe (12) are respectively the inflow end and the outlet end. and a closed end, a plurality of spray positions (13) are provided on the spray pipe (12), and each spray position (13) is provided with a nozzle to spray toward the tube bundles on both sides of the cooling triangle unit; through the above technical solution, the atomized cooling water can be sprayed at the air inlet of the cooling triangle to reduce the inlet air temperature, thereby reducing the circulating water temperature; this patent introduces spray cooling in the indirect air cooling tower from a system perspective, but does not consider the feasibility of spray cooling under ambient side wind, and only setting up spray still cannot avoid the mutual interference of pre-cooling droplets sprayed from the nozzle under ambient side wind, and the problem of uneven pre-cooling amount of the cooling columns on the left and right sides.

[0007] In summary, it is necessary to propose a cooling triangle unit that improves the overall humidification and pre-cooling effect of the air on both sides. Through the effective combination of the internal atomization isolation device of the cooling triangle and the air inlet spray pre-cooling device, the pre-cooling water volume of the left and right cooling columns is isolated inside the cooling triangle to ensure the uniformity of the atomized water volume on the left and right sides. At the same time, a spray water film is formed on the atomization isolation device. When the tower air passes through the atomization isolation device, it can evaporate and exchange heat with the water film, thereby reducing the tower air temperature, thereby improving the overall pre-cooling and humidification effect of the intercooler radiator and reducing the water temperature out of the intercooler. Summary of the Invention

[0008] This patent proposes a cooling triangle unit that improves the overall humidification and pre-cooling effect of the air on both sides. Through the effective combination of the internal atomization isolation device of the cooling triangle and the air inlet spray pre-cooling device, the pre-cooling water sprayed from the left atomization nozzle and the right atomization nozzle is isolated in the middle, reducing the mutual interference of the pre-cooling water sprayed from the left atomization nozzle and the right atomization nozzle, ensuring the uniformity of the atomized water volume on the left and right sides, and forming a spray water film on the atomization isolation device at the same time. When the air entering the tower passes through the atomization isolation device, it can evaporate and exchange heat with the water film, reducing the temperature of the air entering the tower, thereby improving the overall pre-cooling and humidification effect of the air entering the cooling triangle space, strengthening the spray pre-cooling effect, reducing the water temperature out of the inter-cooling tower, and improving the unit's "peak summer" load capacity.

[0009] A cooling triangle unit for improving the overall humidification and pre-cooling effect of air on both sides, comprising a cooling triangle unit, an air inlet spray pre-cooling device, and an atomization isolation device, characterized in that: the cooling triangle unit comprises a left cooling column, a right cooling column and an air inlet louver, and the left cooling column, the right cooling column and the air inlet louver constitute a cooling triangle space; the air inlet spray pre-cooling device is vertically arranged parallel to the vertical center line of the air inlet louver, and comprises a spray pipe, a left atomizing nozzle, and a right atomizing nozzle; the atomization isolation device is vertically arranged along the center line of the cooling triangle, dividing the cooling triangle space into two symmetrical parts, and performing intermediate isolation on the pre-cooling water sprayed from the left atomizing nozzle and the right atomizing nozzle, thereby reducing mutual interference between the pre-cooling water sprayed from the left atomizing nozzle and the right atomizing nozzle, and improving the overall humidification and pre-cooling effect of air on both sides.

[0010] The left cooling column and the right cooling column can be vertical heat dissipation tube bundles with 4 rows of tubes, 6 rows of tubes, or 8 rows of tubes, or horizontal heat dissipation tube bundles with a single row of tubes; the left cooling column, the right cooling column and the air inlet louvers intersect with each other to form a cooling triangle space.

[0011] The spray pipe extends upward from the bottom of the cooling triangle unit to the top of the cooling triangle unit, and each cooling triangle unit is provided with a spray pipe.

[0012] The left atomizing nozzle and the right atomizing nozzle are evenly and staggeredly arranged on the spray pipe, or evenly and horizontally symmetrically arranged along the spray pipe.

[0013] The setting height of the atomizing isolation device inside the cooling triangle unit is consistent with the setting height of the spray pipe; the atomizing isolation device divides the cooling triangle unit into two symmetrical triangular air inlet units on the left and right sides from the midline of the top angle of the cooling triangle unit.

[0014] The left atomizing nozzle is arranged in the left triangular air inlet unit, and the right atomizing nozzle is arranged in the right triangular air inlet unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a conventional spray cooling triangle unit that does not adopt the present utility model.

[0016] Figure 2 This is a schematic diagram of a cooling triangle unit for improving the overall humidification and pre-cooling effect of the air on both sides according to an embodiment of the present invention. Figure 3 It is a schematic diagram of the relative arrangement positions of the spray pipe, the left atomizing nozzle, the right atomizing nozzle and the left cooling column, the right cooling column under this embodiment.

[0017] Figure 4 This is a schematic diagram of a cooling triangle unit for improving the overall humidification and pre-cooling effect of air on both sides according to another embodiment of the present invention.

[0018] In the figure: 1 - left cooling column, 2 - right cooling column, 3 - air inlet louver, 4 - atomization isolation device, 5 - spray pipe, 6 - left atomization nozzle, 7 - left part of the triangular air inlet unit, 8 - right part of the triangular air inlet unit, 9 - right atomization nozzle. DETAILED DESCRIPTION

[0019] 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.

[0020] like Figure 1 The figure shows a conventional spray cooling triangle unit, including a left cooling column 1, a right cooling column 2, an air inlet louver 3, a spray pipe 5, a left atomizing nozzle 6, and a right atomizing nozzle 9; the left cooling column 1 and the right cooling column 2 are both 6-row vertical heat dissipation tube bundles; the left cooling column 1, the right cooling column 2 and the air inlet louver 3 intersect with each other to form a cooling triangle space; the spray pipe 5 extends upward from the bottom of the cooling triangle unit to the top of the cooling triangle unit; the left atomizing nozzle 6 and the right atomizing nozzle 9 are evenly and symmetrically arranged on the spray pipe 5.

[0021] Under the influence of the ambient side wind, a large air vortex is generated inside the cooling triangle of the intercooler. The mist droplets sprayed from the nozzle are disrupted by the air vortex and cannot be directly sprayed on the left and right cooling columns, resulting in uneven air pre-cooling effects on the cooling columns on both sides, affecting the overall cooling performance of the cooling triangle.

[0022] like Figure 2 、 Figure 3 The utility model shown in the figure relates to an embodiment of a cooling triangle unit for improving the overall humidification and pre-cooling effect of the air on both sides, comprising a left cooling column 1, a right cooling column 2, an air inlet louver 3, an atomizing isolation device 4, a spray pipe 5, a left atomizing nozzle 6, a left triangular air inlet unit 7, a right triangular air inlet unit 8, and a right atomizing nozzle 9; the left cooling column 1 and the right cooling column 2 are both 6-row vertical heat dissipation tube bundles; the left cooling column 1, the right cooling column 2 and the air inlet louver 3 intersect with each other to form a cooling triangle space; the spray pipe 5 is automatically The bottom of the cooling triangle unit extends upward to the top of the cooling triangle unit; the left atomizing nozzle 6 and the right atomizing nozzle 9 are evenly and staggered on the spray pipe 5; the setting height of the atomizing isolation device 4 inside the cooling triangle unit is consistent with the setting height of the spray pipe 5; the atomizing isolation device 4 divides the cooling triangle unit into two symmetrical triangular air inlet units on the left and right sides from the midline of the angle at the top of the cooling triangle unit; the left atomizing nozzle 6 is arranged in the left triangular air inlet unit 7, and the right atomizing nozzle 9 is arranged in the right triangular air inlet unit 8.

[0023] Under the ambient side wind, the atomizing isolation device 4 reduces the air vortex inside the original cooling triangle, and the amount of atomized water sprayed by the uniform flow nozzle 6, when the air carries the spray through the left triangular air inlet unit 7, forms a pre-cooling water film on the atomizing isolation device 4, and the air enters the left cooling column 1 after evaporation and heat exchange through the water film; the atomizing isolation device 4 and the air inlet spray pre-cooling device are set at the same time, which can ensure that more air carries the spray droplets and blows them onto the left cooling column 1 and the right cooling column 2, and evenly distributes the pre-cooling water volume of the cooling columns on both sides, thereby improving the overall pre-cooling and humidifying effect of the air inlet in the cooling triangle space, strengthening the spray pre-cooling effect, and reducing the water temperature out of the intercooler.

[0024] like Figure 4 The utility model shown is another embodiment of a cooling triangle unit for improving the overall humidification and pre-cooling effect of air on both sides, comprising a left cooling column 1, a right cooling column 2, an air inlet louver 3, an atomizing isolation device 4, a spray pipe 5, a left atomizing nozzle 6, a left triangular air inlet unit 7, a right triangular air inlet unit 8, and a right atomizing nozzle 9; the left cooling column 1 and the right cooling column 2 are both 6-row vertical heat dissipation tube bundles; the left cooling column 1, the right cooling column 2 and the air inlet louver 3 intersect with each other to form a cooling triangle space; the spray pipe 5 extends upward from the bottom of the cooling triangle unit to the top of the cooling triangle unit; the left atomizing nozzle 6 and the right atomizing nozzle 9 are evenly and horizontally symmetrically arranged along the spray pipe 5; the setting height of the atomizing isolation device 4 inside the cooling triangle unit is consistent with the setting height of the spray pipe 5; the atomizing isolation device 4 divides the cooling triangle unit into two symmetrical triangular air inlet units on the left and right sides from the midline of the angle at the top of the cooling triangle unit; the left atomizing nozzle 6 is arranged in the left triangular air inlet unit 7, and the right atomizing nozzle 9 is arranged in the right triangular air inlet unit 8.

[0025] Under the ambient side wind, the atomizing isolation device 4 reduces the original air vortex inside the cooling triangle, optimizes the air flow field inside the cooling triangle, avoids the phenomenon that the right cooling column 2 is blown directly due to air entrained with droplets, resulting in a small amount of atomized water, while the left cooling column 1 is leeward and has a small amount of atomized water, and evens out the amount of pre-cooling atomized water sprayed by the nozzle 6. When the air carries the spray through the left triangular air inlet unit 7, a pre-cooling water film is formed on the atomizing isolation device 4. After the air evaporates and exchanges heat through the water film, it enters the left cooling column 1; the atomizing isolation device 4 and the air inlet spray pre-cooling device are set at the same time, which can ensure that more air carries the spray droplets and blows them onto the left cooling column 1 and the right cooling column 2, evenly distributing the pre-cooling water amount of the cooling columns on both sides, reducing the air temperature entering the tower, enhancing the spray pre-cooling effect, and improving the overall heat exchange performance of the cooling triangle.

[0026] The above shows and describes the basic principles, main features and advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above-mentioned exemplary implementation cases, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the implementation cases should be regarded as exemplary and non-restrictive. The scope of the utility model 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 utility model, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0027] 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 for improving the overall humidification and pre-cooling effect of air on both sides, comprising a cooling triangle unit, an air inlet spray pre-cooling device, and an atomization isolation device, characterized in that: The cooling triangle unit includes a left cooling column, a right cooling column and an air inlet louver, and the left cooling column, the right cooling column and the air inlet louver constitute a cooling triangle space; the air inlet spray pre-cooling device is vertically arranged parallel to the vertical center line of the air inlet louver, and includes a spray pipe, a left atomizing nozzle and a right atomizing nozzle; the atomization isolation device is vertically arranged along the center line of the cooling triangle, dividing the cooling triangle space into two symmetrical parts, and performing intermediate isolation on the pre-cooling water sprayed from the left atomizing nozzle and the right atomizing nozzle, thereby reducing mutual interference between the pre-cooling water sprayed from the left atomizing nozzle and the right atomizing nozzle, and improving the overall humidification and pre-cooling effect of the air on both sides.

2. A cooling triangle unit for improving the overall humidification and pre-cooling effect of air on both sides according to claim 1, characterized in that: The left cooling column and the right cooling column can be vertical heat dissipation tube bundles with 4 rows of tubes, 6 rows of tubes, or 8 rows of tubes, or horizontal heat dissipation tube bundles with a single row of tubes; the left cooling column, the right cooling column and the air inlet louvers intersect with each other to form a cooling triangle space.

3. The cooling triangle unit for improving the overall humidification and pre-cooling effect of air on both sides according to claim 1, characterized in that: The spray pipe extends upward from the bottom of the cooling triangle unit to the top of the cooling triangle unit, and each cooling triangle unit is provided with a spray pipe.

4. The cooling triangle unit for improving the overall humidification and pre-cooling effect of air on both sides according to claim 1, characterized in that: The left atomizing nozzle and the right atomizing nozzle are evenly and staggeredly arranged on the spray pipe, or evenly and horizontally symmetrically arranged along the spray pipe.

5. The cooling triangle unit for improving the overall humidification and pre-cooling effect of air on both sides according to claim 1, characterized in that: The setting height of the atomizing isolation device inside the cooling triangle unit is consistent with the setting height of the spray pipe; the atomizing isolation device divides the cooling triangle unit into two symmetrical triangular air inlet units on the left and right sides from the midline of the top angle of the cooling triangle unit.

6. The cooling triangle unit for improving the overall humidification and pre-cooling effect of air on both sides according to claim 1, characterized in that: The left atomizing nozzle is arranged in the left triangular air inlet unit, and the right atomizing nozzle is arranged in the right triangular air inlet unit.

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