An evaporative cooling device for enhancing the cooling capacity of an indirect air cooling tower

Abstract

The present invention discloses an evaporative cooling device for enhancing the cooling capacity of an indirect air-cooling tower, comprising a cooling tower cylinder, a controller, an environmental temperature and humidity monitoring device for detecting the temperature and humidity of the external environment, and a wind direction and wind speed measuring device for detecting the wind direction and wind speed of the external environment; a cooling tower radiator is provided on the outer wall surface of the cooling tower cylinder, a plurality of V-shaped evaporative cooling devices are provided on the windward surface of the cooling tower radiator, and an adjustable wind shielding device is arranged between adjacent V-shaped evaporative cooling devices; an input end of the controller is connected to the environmental temperature and humidity monitoring device and the wind direction and wind speed measuring device, and an output end of the controller is connected to the control end of the V-shaped evaporative cooling device and the adjustable wind shielding device. The device can reduce the air inlet temperature of the cooling tower during high temperature periods in summer, improve the problem of uneven air inlet to the cooling tower in windy weather, and enhance the cooling capacity of the indirect air-cooling tower.

Description

Technical Field

[0001] The invention belongs to the technical field of energy and power engineering equipment, and relates to an evaporative cooling device for enhancing the cooling capacity of an indirect air cooling tower. Background Art

[0002] The cooling tower is a key component of the turbine cold-end system, and its cooling performance significantly impacts the efficiency of the power plant. Reduced cooling tower performance can increase the cooling water temperature, reduce the condenser vacuum, and ultimately reduce the temperature difference in the turbine's thermal cycle, leading to lower power generation efficiency.

[0003] my country's coal resources are primarily distributed in the water-scarce Three North regions. Indirect air cooling systems have been widely adopted in these water-scarce regions due to their outstanding water-saving capabilities and low maintenance requirements. However, compared to wet cooling systems, indirect air cooling systems are significantly affected by ambient temperature and crosswinds. Their cooling capacity is significantly reduced in strong winds and during high summer temperatures. High summer temperatures coincide with peak electricity consumption, significantly impacting the economic benefits of power plants.

[0004] Regarding the impact of strong winds on the cooling capacity of air cooling towers:

[0005] Chinese patent CN201620147675.3 "A side wind recovery air cooling tower" uses a guide section and ventilation ducts to guide the wind on the windward side to the sides and back to fully utilize the ambient wind speed, but its structure is too complex, the cost is high, and the feasibility is not strong.

[0006] Chinese patent CN202010368246.X, "An Indirect Air-Cooling Air Guide System with Radially Variable Angles," utilizes multiple sets of electrically controlled, angle-adjustable air guides arranged radially along the air-cooling tower to guide crosswinds and maximize air intake. However, its control is complex and involves numerous electric devices.

[0007] Regarding the impact of high temperature weather in summer on the cooling capacity of cooling towers:

[0008] Chinese patent CN201810617107.9, "An Air Cooling Tower with Double-Layered Packing Arrangement and Evaporative Precooling Inlet Air and Operating Method," utilizes evaporative cooling packing arranged continuously around the tower's circumference to precool the tower's inlet air, enhancing the tower's cooling capacity during high summer temperatures. During cooler periods, hinges are used to close the packing to avoid increased inlet air resistance. However, this still results in significant inlet air pressure loss in the summer, increasing the heat exchange temperature difference while reducing the inlet air volume.

[0009] Chinese patent CN201821405339.X, "A dual-purpose spray cooling and air diversion device for a small air-cooling tower," arranges circular deflectors around the cooling tower's circumference and places nozzles on the outer ring of the deflectors to mitigate the effects of crosswinds and lower the inlet air temperature. However, spray cooling can corrode the radiator, and while the circular deflectors mitigate the effects of crosswinds, they also increase inlet air resistance. Summary of the Invention

[0010] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide an evaporative cooling device for enhancing the cooling capacity of an indirect air-cooling tower. The device can reduce the inlet air temperature of the cooling tower during high temperature periods in summer, improve the problem of uneven air inlet to the cooling tower in windy weather, and enhance the cooling capacity of the indirect air-cooling tower.

[0011] To achieve the above-mentioned object, the evaporative cooling device for enhancing the cooling capacity of an indirect air cooling tower according to the present invention comprises a cooling tower cylinder, a controller, an ambient temperature and humidity monitoring device for detecting the ambient temperature and humidity, and a wind direction and wind speed measuring device for detecting the wind direction and wind speed of the ambient environment;

[0012] The outer wall of the cooling tower cylinder is provided with a cooling tower radiator, and a plurality of V-shaped evaporative cooling devices are provided on the windward side of the cooling tower radiator, and an adjustable wind shielding device is arranged between adjacent V-shaped evaporative cooling devices;

[0013] The input end of the controller is connected to the environmental temperature and humidity monitoring device and the wind direction and wind speed measuring device, and the output end of the controller is connected to the control end of the V-shaped evaporative cooling device and the adjustable wind shielding device.

[0014] The V-shaped evaporative cooling device and the adjustable wind shielding device are fixed on the cooling tower cylinder through a bracket.

[0015] The V-shaped evaporative cooling device includes a fixed frame, a water tank, a circulation pump and a distribution pipe;

[0016] The fixed frame is connected to the bracket. The fixed frame is divided into multiple layers. Filling, water distribution device and filling pressure plate are arranged in each layer. Among them, the water distribution device is arranged above the filler, and the filling pressure plate is arranged on the upper and lower sides of the filler. The water pool is located below the fixed frame, and the circulation pump is located in the water pool. The outlet of the circulation pump enters the water distribution device in each layer through the distribution pipe and is connected. The controller is connected to the control end of the circulation pump.

[0017] The packing pressure plate is a grid type structure.

[0018] A water supply port is provided on the top of the pool, a water supply pump is connected with the water supply port, a float valve is provided in the pool, and the water supply pump is locked with the float valve.

[0019] It also includes a drain pipe, the inlet of which is connected to the drain outlet at the bottom of the pool, and the outlet of the drain pipe is connected to the power plant drainage ditch.

[0020] There is a manual valve on the drain pipe.

[0021] The adjustable windshield device includes a windshield device bracket, a track, an electric winch and a windshield curtain. The windshield device bracket is connected to the bracket, the electric winch is installed on the top of the windshield device bracket, the track is installed on the side of the windshield device bracket, the end face of the windshield curtain cooperates with the track, the electric winch is connected to the windshield curtain, and the controller is connected to the control end of the electric winch.

[0022] The present invention has the following beneficial effects:

[0023] During specific operation, the evaporative cooling device for enhancing the cooling capacity of an indirect air-cooling tower described in the present invention adjusts the states of the V-shaped evaporative cooling device and the adjustable wind shield according to the temperature of the external environment, reduces the air inlet temperature of the cooling tower during the high temperature period in summer, and thereby enhances the cooling capacity of the indirect air-cooling tower. At the same time, the states of the V-shaped evaporative cooling device and the adjustable wind shield are adjusted according to the external wind speed and wind direction, so as to balance the air inlet volume in various directions of the air-cooling tower and improve the problem of uneven air inlet to the cooling tower in windy weather. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall arrangement of the present invention;

[0025] Figure 2a Schematic diagram of the V-shaped evaporative cooling device 4 of the present invention;

[0026] Figure 2b for Figure 2a A cross-sectional view in the AA direction;

[0027] Figure 3 Schematic diagram of the adjustable windshield device 5 in the present invention.

[0028] Among them, 1 is the cooling tower cylinder, 2 is the cooling tower radiator, 3 is the bracket, 4 is the V-shaped evaporative cooling device, 41 is the shell, 42 is the filler, 43 is the water distribution device, 44 is the filler pressure plate, 45 is the water pool, 46 is the circulation pump, 47 is the distribution pipe, 48 is the water supply port, 49 is the drain port, 5 is the adjustable windshield device, 51 is the track, 52 is the electric winch, and 53 is the windshield curtain. DETAILED DESCRIPTION

[0029] The present invention is described in further detail below with reference to the accompanying drawings:

[0030] refer to Figures 1 to 3The evaporative cooling device for enhancing the cooling capacity of an indirect air-cooling tower described in the present invention includes a cooling tower cylinder 1, a controller, an environmental temperature and humidity monitoring device for detecting the temperature and humidity of the external environment, and a wind direction and wind speed measuring device for detecting the wind direction and wind speed of the external environment; a cooling tower radiator 2 is provided on the outer wall surface of the cooling tower cylinder 1, and a plurality of V-shaped evaporative cooling devices 4 are provided on the windward surface of the cooling tower radiator 2, and an adjustable wind shielding device 5 is arranged between adjacent V-shaped evaporative cooling devices 4; the input end of the controller is connected to the environmental temperature and humidity monitoring device and the wind direction and wind speed measuring device, and the output end of the controller is connected to the control end of the V-shaped evaporative cooling device 4 and the adjustable wind shielding device 5.

[0031] The V-shaped evaporative cooling device 4 and the adjustable wind shielding device 5 are fixed to the cooling tower cylinder 1 through the bracket 3 .

[0032] The V-shaped evaporative cooling device 4 includes a fixed frame 41, a water tank 45, a circulation pump 46 and a distribution pipe 47; the fixed frame 41 is connected to the bracket 3, and the fixed frame 41 is divided into multiple layers, each layer is arranged with filler 42, a water distribution device 43 and a filler pressure plate 44, wherein the water distribution device 43 is arranged above the filler 42, and the filler pressure plate 44 is arranged on the upper and lower sides of the filler 42, the water tank 45 is located below the fixed frame 41, and the circulation pump 46 is located in the water tank 45. The outlet of the circulation pump 46 enters the water distribution device 43 in each layer through the distribution pipe 47 and is connected, and the controller is connected to the control end of the circulation pump 46, wherein the filler pressure plate 44 is a grid-type structure; a water supply port 48 is provided at the top of the water tank 45.

[0033] The water supply pump is connected to the water supply port 48, and a float valve is provided in the water pool 45. The water supply pump and the float valve are locked. The present invention also includes a drain pipe. The inlet of the drain pipe is connected to the drain port 49 at the bottom of the water pool 45, and the outlet of the drain pipe is connected to the power plant drainage ditch. A manual valve is provided on the drain pipe.

[0034] The adjustable windshield device 5 includes a windshield device bracket, a track 51, an electric winch 52 and a windshield curtain 53. The windshield device bracket is connected to the bracket 3. The electric winch 52 is installed on the top of the windshield device bracket. The track 51 is installed on the side of the windshield device bracket. The end face of the windshield curtain 53 cooperates with the track 51. The electric winch 52 is connected to the windshield curtain 53, and the controller is connected to the control end of the electric winch 52.

[0035] The specific working process of the present invention is:

[0036] When the weather is hot, the adjustable wind shield 5 is closed so that the air entering the intercooler flows through the filler 42 first. At the same time, the circulation pump 46 is turned on to distribute water to the filler 42. The water evaporates and absorbs heat, which humidifies and cools the air, increases the heat exchange temperature difference and suction force of the intercooler, and thus enhances the cooling capacity of the intercooler.

[0037] In non-high temperature weather, the adjustable wind shield 5 is opened and the circulation pump 46 is closed to reduce the air inlet resistance of the intercooler.

[0038] In windy weather, the adjustable wind shield 5 is closed so that the wind on the windward side must pass through the filler 42 before entering the intercooling tower, thereby increasing the resistance of the windward side and reducing the wind speed entering the tower from the windward side. At the same time, the adjustable wind shield 5 on the side and back is opened to reduce the resistance of the wind from the side and back entering the intercooling tower, thereby balancing the air intake in all directions of the air cooling tower.

[0039] At the same time, the V-shaped evaporative cooling devices 4 are interconnected to form a zigzag shape, which destroys the air flow at the air inlet height of the air cooling tower, reduces the "wind cover" phenomenon caused by the influence of side winds, and increases the air flow entering the air cooling tower.

[0040] Although the above describes the specific embodiments of the present invention in conjunction with the accompanying drawings, it does not limit the scope of protection of the present invention. Based on the technical solution of the present invention, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present invention.

Claims

1. An evaporative cooling device for enhancing the cooling capacity of an indirect air cooling tower, characterized in that: It comprises a cooling tower cylinder (1), a controller, an environmental temperature and humidity monitoring device for detecting the temperature and humidity of the external environment, and a wind direction and wind speed measuring device for detecting the wind direction and wind speed of the external environment; A cooling tower radiator (2) is provided on the outer wall surface of the cooling tower cylinder (1); a plurality of V-shaped evaporative cooling devices (4) are provided on the windward surface of the cooling tower radiator (2); and an adjustable windshield device (5) is arranged between adjacent V-shaped evaporative cooling devices (4); The input end of the controller is connected to the environmental temperature and humidity monitoring device and the wind direction and wind speed measuring device, and the output end of the controller is connected to the control end of the V-shaped evaporative cooling device (4) and the adjustable wind shielding device (5); The V-shaped evaporative cooling device (4) comprises a fixed frame (41), a water tank (45), a circulation pump (46) and a distribution pipe (47); The fixed frame (41) is connected to the bracket (3), and the fixed frame (41) is divided into multiple layers. Each layer is provided with a filler (42), a water distribution device (43) and a filler pressure plate (44), wherein the water distribution device (43) is arranged above the filler (42), and the filler pressure plate (44) is arranged on the upper and lower sides of the filler (42). The water pool (45) is located below the fixed frame (41), and the circulation pump (46) is located in the water pool (45). The outlet of the circulation pump (46) enters the water distribution device (43) in each layer through the distribution pipe (47) and is connected. The controller is connected to the control end of the circulation pump (46); The adjustable windshield device (5) comprises a windshield device bracket, a track (51), an electric hoist (52) and a windshield curtain (53); the windshield device bracket is connected to the bracket (3); the electric hoist (52) is installed on the top of the windshield device bracket; the track (51) is installed on the side of the windshield device bracket; the end face of the windshield curtain (53) matches the track (51); the electric hoist (52) is connected to the windshield curtain (53); and the controller is connected to the control end of the electric hoist (52).

2. The evaporative cooling device for enhancing the cooling capacity of an indirect air cooling tower according to claim 1, characterized in that: The V-shaped evaporative cooling device (4) and the adjustable wind shielding device (5) are fixed to the cooling tower cylinder (1) via a bracket (3).

3. The evaporative cooling device for enhancing the cooling capacity of an indirect air cooling tower according to claim 1, characterized in that: The packing pressure plate (44) is a grid-type structure.

4. The evaporative cooling device for enhancing the cooling capacity of an indirect air cooling tower according to claim 1, characterized in that: A water supply port (48) is provided on the top of the water pool (45), and a water supply pump is connected to the water supply port (48). A float valve is provided in the water pool (45), and the water supply pump is locked with the float valve.

5. The evaporative cooling device for enhancing the cooling capacity of an indirect air cooling tower according to claim 1, characterized in that: The utility model also comprises a drainage pipe, the inlet of the drainage pipe is connected to the drainage port (49) at the bottom of the pool (45), and the outlet of the drainage pipe is connected to the drainage ditch of the power plant.

6. The evaporative cooling device for enhancing the cooling capacity of an indirect air cooling tower according to claim 5, characterized in that: There is a manual valve on the drain pipe.

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