CN216741809U - Power generation device for recovering potential energy of circulating water rain area of cooling tower - Google Patents

Abstract

The utility model provides a power generation device for recovering potential energy of a circulating water rain area of a cooling tower, which is characterized in that circulating cooling water in the cooling tower is collected below a water spraying filler area by using a water collecting device, then the circulating cooling water is converged into a main water tank, enters a water guide pipeline along the main water tank and then flows out to a water turbine, the water turbine is driven to rotate under the action of the potential energy of the circulating water, a generator is further driven to generate power, the power consumption of industrial production can be reduced, the industrial production benefit is improved, and the power generation device meets the requirements of energy conservation and environmental protection. Receive the water installation through setting up and collect the circulating water in trickle filler district below for the trickle rain district resistance reduces, and the cooling tower air volume increases, thereby can improve cooling tower cooling capacity correspondingly, still can reduce the cooling tower noise simultaneously.

Description

Power generation device for recovering potential energy of circulating water rain area of cooling tower

Technical Field

The utility model belongs to the technical field of energy conservation of industrial circulating cooling systems, and particularly relates to a power generation device for recovering potential energy of circulating water rain areas of a cooling tower.

Background

The cooling tower is one of important equipment in industrial production, and is a device for taking away waste heat generated in the industrial production process through circulating cooling water, and the safety and the economic benefit of the industrial production are directly influenced by the quality of the cooling performance of the cooling tower.

Cooling towers commonly used in current industrial production include a conventional natural draft counter-flow wet cooling tower as shown in fig. 1, and a mechanical draft counter-flow wet cooling tower as shown in fig. 16. Waste heat generated in industrial production is transferred to circulating cooling water through a heat exchanger, the circulating cooling water with heat is conveyed to a water distribution system of a cooling tower through a circulating water pump, the circulating cooling water is uniformly sprayed to the top surface of a filler by the water distribution system, the circulating cooling water falls into a water collecting tank of the cooling tower after passing through a water spraying filler, in the process, the circulating cooling water and air entering the cooling tower are subjected to heat-mass exchange, damp and hot air subjected to the heat-mass exchange is discharged into the atmosphere from an outlet of the cooling tower, the cooled circulating water falls into the water collecting tank and then is continuously conveyed into the heat exchanger through the circulating water pump for heat exchange, and therefore the waste heat generated in the industrial production can be continuously discharged into the atmosphere.

The areas of the conventional natural draft cooling tower and the mechanical draft cooling tower for heat and mass transfer can be divided into 3 parts, including a spraying area (from a spray nozzle to a filler top surface), a water spraying filler area and a water spraying rain area (from a filler bottom to a water collecting tank top surface), wherein the cooling capacities of different areas are different, the cooling capacity of the spraying area accounts for about 10% of the cooling capacity of the whole tower, the cooling capacity of the water spraying filler area accounts for about 80% of the cooling capacity of the whole tower, and the cooling capacity of the water spraying rain area accounts for about 20% of the cooling capacity of the whole tower.

In the natural ventilation counter-flow wet cooling tower, the resistance of the rain area accounts for 40-50% of the resistance of the whole tower, the height of the rain area accounts for 60-80% of the static lift of the circulating water system, and taking a natural ventilation counter-flow wet cooling tower matched with a 1000MW unit as an example, the height of the rain area is up to 12m, and the height of the circulating water is up to 30m³And s. In the mechanical ventilation counter-flow wet cooling tower with double-side air intake, the height of the rain area of the mechanical ventilation counter-flow wet cooling tower accounts for about 50 percent of the static lift of the cooling tower, taking the mechanical ventilation counter-flow wet cooling tower with double-side air intake with the size of 20m (length) multiplied by 20m (width) as an example, the air intake is about 4.5m, the circulating water flow is 5000t/h, but the mechanical ventilation counter-flow wet cooling tower is usually produced industriallyMany of the mechanical draft cooling towers of the cell type are often arranged in one or more rows for use, and the circulating water flow is large. Therefore, although the existing cooling tower has high cooling capacity and large circulating water flow, the height of a water spraying rain area is high and the water spraying resistance is large.

Therefore, there is a need to improve the existing cooling tower structure, and utilize the high potential energy of the rain region to obtain better cooling effect, and provide technical support for the energy-saving operation of the cooling tower.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides the power generation device for recovering the potential energy of the circulating water rain area of the cooling tower, which collects the circulating cooling water in the cooling tower below the water spraying filler area, and utilizes the high potential energy of the water spraying rain area to drive the water turbine so as to further drive the generator to generate power, so that the cooling tower has a better cooling effect, support is provided for the energy-saving operation of the cooling tower, the power consumption of industrial production can be reduced, and the economic benefit of industrial production is improved.

The present invention achieves the above-described object by the following technical means.

The utility model provides a retrieve power generation facility of cooling tower circulating water rain district potential energy, is including setting up receipts water installation and the main basin in the cooling tower trickle filler district below, receives water installation and is connected with main basin, and main basin export is connected with the leading water pipeline, and the leading water pipeline other end is connected with the hydraulic turbine, and the hydraulic turbine is supporting to be covered and is had the generator.

Furthermore, the cooling tower is a natural ventilation counter-flow wet cooling tower, the plane of a water spraying filler area in the cooling tower is of a circular structure, and the main water tank is arranged along the diameter of the plane of the water spraying filler area.

Further, the cooling tower is a mechanical draft counter-flow wet cooling tower, and the main water tank is arranged along the central line of the mechanical draft counter-flow wet cooling tower.

Furthermore, a supporting upright post is arranged in the rain area in the cooling tower, a supporting beam is fixed between the supporting upright posts on two sides of the arrangement position of the main water tank, and the main water tank is arranged on the supporting beam.

Furthermore, the section of the main water tank is in one of a triangle shape, a step shape, a rectangle shape and a pi shape.

Furthermore, the water turbine is arranged in a water collecting tank in the cooling tower, circulating water discharged from a tail water pipeline at the rear end of the water turbine enters the water collecting tank, the water collecting tank is communicated with a circulating water pump forebay, a circulating water pump water outlet in the circulating water pump forebay is connected with the heat exchanger through a pipeline, and an outlet of the heat exchanger is communicated with the cooling tower through a pipeline.

Further, the water turbine is arranged outside the cooling tower, and a tail water pipeline at the rear end of the water turbine is communicated with a front pool or a water collecting pool of the circulating water pump; the water collecting tank is communicated with the circulating water pump forebay, a water outlet of the circulating water pump in the circulating water pump forebay is connected with the heat exchanger through a pipeline, and an outlet of the heat exchanger is communicated with the cooling tower through a pipeline.

Furthermore, the water collecting device comprises a hanging rod and a water collecting plate water collecting tank, wherein multiple rows of hanging rods are vertically fixed below a filler supporting beam in the cooling tower, the bottom of each hanging rod is connected with the water collecting tank through a connecting rod, one side of the water collecting tank extends upwards and turns outwards, one end of the water collecting tank is closed, the other end of the water collecting tank is open and is connected with the main water tank, the water collecting plate is arranged between two adjacent rows of hanging rods, one end of the water collecting plate is fixed with the filler supporting beam, and the other end of the water collecting plate is obliquely arranged on one side of the water collecting tank, which extends upwards and turns outwards.

Furthermore, a layer of laying beam is arranged on the supporting upright column at the bottom of the water collecting tank, and the water collecting tank is laid on the laying beam.

The utility model has the following beneficial effects:

according to the utility model, the circulating cooling water is collected below the water spraying filler area by using the water collecting device and then flows out of the main water tank to the water turbine, the height potential energy of the water spraying rain area is utilized to drive the water turbine to rotate, so that the generator is driven to generate electricity, the power consumption of industrial production can be reduced, and the industrial production benefit is improved; in addition, the resistance of the rain area is reduced, the ventilation quantity of the cooling tower is increased, the cooling capacity and the industrial production benefit of the cooling tower are correspondingly improved, and the noise of the cooling tower is reduced. The water turbine is used for generating electricity, and the water turbine belongs to clean energy and meets the requirements of national energy-saving and emission-reducing policies, so that the electricity generation technology provided by the utility model is a more energy-saving and environment-friendly technology and has a better popularization prospect.

Drawings

FIG. 1 is a schematic view of a natural draft counter-flow wet cooling tower;

FIG. 2 is a sectional view of the power generating apparatus according to embodiment 1;

FIG. 3 is an enlarged view of the turbine and generator arrangement of the present invention;

FIG. 4 is a plan view of a power generation plant within a single-shaft natural draft counter-flow wet cooling tower;

FIG. 5 is a schematic diagram showing the optimal position arrangement of a main water tank in a single-shaft natural draft counter-flow wet cooling tower;

FIG. 6 is a cross-sectional view of the main flume arrangement of the present invention;

FIG. 7 is a plan view of the arrangement of water collectors in a single-shaft natural draft counter-flow wet cooling tower;

fig. 8 is a schematic layout view of the suspension type water collecting device in embodiment 1;

fig. 9 is a partial enlarged view of the arrangement of the suspended water collecting device in embodiment 1;

FIG. 10 is a schematic view of the arrangement of the resting type water collecting device in embodiment 1;

FIG. 11 is a partial enlarged view of the arrangement of the shelf type water collecting device in the embodiment 1;

FIG. 12 is a schematic diagram of arrangement of laying beams in a single-shaft natural draft counter-flow wet cooling tower;

FIG. 13 is a schematic view showing the arrangement of the main water tank of embodiment 1, in which the sectional shape is a stepped shape;

FIG. 14 is a schematic view showing the arrangement of a main water tank having a rectangular cross-sectional shape according to example 1;

FIG. 15 is a schematic view showing the arrangement of a main water tank having a cross-sectional shape of "π" in example 1;

FIG. 16 is a schematic view of a double-sided air intake mechanical draft counter-flow wet cooling tower;

FIG. 17 is a sectional view of the power generating apparatus according to embodiment 2;

FIG. 18 is a plan view of the power generating device described in embodiment 2;

FIG. 19 is a plan view of the arrangement of the main water tank in embodiment 2;

FIG. 20 is a schematic view showing the arrangement of the shelf type water collecting device in embodiment 2;

FIG. 21 is a schematic view showing the arrangement of support beams in example 2;

FIG. 22 is a schematic view of the arrangement of the rest beams in embodiment 2;

fig. 23 is a schematic diagram of the optimal position arrangement of the main water tank in the double-shaft natural draft counter-flow wet cooling tower.

In the figure: 1-cooling the tower shell; 2-a water spraying and filling area; 3-a water-rain area; 4-supporting the upright post; 5-a main water tank; 6-vertical shaft; 7-a support beam; 8-a water conduit; 9-water turbine; 10-a generator; 11-a tail water pipeline; 12-circulating water pump forebay; 13-a water collecting device; 14-a boom; 15-water collecting plate; 16-a water collection tank; 17-a filler support beam; 18-resting beams; 19-a water collecting tank.

Detailed Description

The utility model will be further described with reference to the following figures and specific examples, but the scope of the utility model is not limited thereto.

Example 1:

as shown in fig. 1, 2 and 8, the power generation device for recovering potential energy of the circulating water rain area of the cooling tower comprises a water collecting device 13 and a main water tank 5 which are arranged below a water spraying filler area 2 of a natural ventilation counter-flow type wet cooling tower.

For a single-shaft natural draft counter-flow wet cooling tower, as shown in fig. 1, 2 and 4, the plane of the water spraying filler area 2 is a circular structure with a rectangular shaft 6 as a center, a main water tank 5 is arranged below the water spraying filler area 2 and along the diameter of the plane of the water spraying filler area 2, and the part of the main water tank 5 close to the shaft 6 is provided with two branch structures surrounding the shaft 6; in order to further save cost, as shown in fig. 4 and 5, two main water tanks 5 are preferably arranged, two main water tanks 5 are perpendicular to each other, the planar shapes of the main body parts of the two main water tanks 5 are rectangular and are perpendicular to the side of the shaft 6, and in practical application, one main water tank is selected.

For the double-shaft natural draft counter-flow wet cooling tower, as shown in fig. 23, the plane of the water spraying filler area 2 is a circular structure, the main water tank 5 is arranged below the water spraying filler area 2 and along the diameter of the plane of the water spraying filler area 2, the main water tank 5 is not branched, the plane shape of the main water tank is a complete rectangular structure, and the main water tank 5 is perpendicular to the connecting line between the two shafts 6.

As shown in fig. 2, 13, 14 and 15, the cross-sectional shape of the main water tank 5 is one of a triangle, a step, a rectangle and a pi-shape. The natural ventilation counter-flow wet cooling tower is provided with a plurality of supporting columns 4 in a rain and water area 3, as shown in fig. 6, supporting beams 7 are fixed between the supporting columns 4 on two sides of the arrangement position of a main water tank 5, the supporting beams 7 are perpendicular to the main water tank 5, and the main water tank 5 is installed on the supporting beams 7.

As shown in fig. 2 and 3, the outlet of the main water tank 5 is connected with the water conduit 8, the other end of the water conduit 8 is connected with the water turbine 9, the water turbine 9 is provided with the corresponding generator 10, in practical application, the number of the water turbines 9 is set according to the use requirement, and the water turbine 9 is arranged in the water collecting tank 19 or outside the cooling tower. When the water turbine 9 is arranged in the water collecting tank 19, circulating water discharged from a tail water pipeline 11 at the rear end of the water turbine 9 enters the water collecting tank 19, and the water collecting tank 19 is communicated with a circulating water pump forebay 12. When the water turbine 9 is arranged outside the cooling tower, the tail water pipeline 11 at the rear end of the water turbine 9 is communicated with the water collecting tank 19 or the circulating water pump forebay 12, and the water collecting tank 19 is communicated with the circulating water pump forebay 12.

And a circulating water pump is arranged in the circulating water pump forebay 12, a water outlet of the circulating water pump is connected with a heat exchanger through a pipeline, and an outlet of the heat exchanger is communicated with the natural ventilation counter-flow wet cooling tower through a pipeline.

The water collecting device 13 has two structural forms, namely a suspension type and a shelving type, and the specific structure is as follows:

as shown in fig. 7, 8 and 9, the suspension type water collecting device 13 comprises a hanger rod 14, a water collecting plate 15 and a water collecting tank 16, wherein a plurality of rows of hanger rods 14 are vertically fixed below a filler supporting beam 17 in the natural draft counter-flow wet cooling tower, the bottom of each hanger rod 14 is connected with the water collecting tank 16 through a connecting rod, and one side of the water collecting tank 16 extends upwards and turns outwards; one end of the water collecting tank 16 is closed, the other end of the water collecting tank is opened and is communicated with the main water tank 5, and the closed end of the water collecting tank 16 is higher than the other end of the water collecting tank, so that circulating water can be better collected and then discharged into the main water tank 5; the water collecting plate 15 is arranged between two adjacent rows of hanging rods 14, one end of the water collecting plate 15 is fixed with the filler supporting beam 17, and the other end of the water collecting plate 15 is obliquely erected on one side of the water collecting tank 5 which extends upwards and turns outwards, so that water in the water spraying filler area 2 can flow into the water collecting tank 16 along the water collecting plate 15.

As shown in fig. 10, 11 and 12, the shelving type water collecting device 13 is additionally provided with a shelving beam 18 on the original basis of the suspension type water collecting device 13, the shelving beam 18 is fixed on the support upright post 4 at the bottom of the water collecting tank 16, the shelving beam 18 is parallel to the main water tank 5, and the water collecting tank 16 is rested on the shelving beam 18; compared with the suspended water collecting device 13, the stress point of the resting water collecting device 13 is changed from the hanger rod 14 to the resting beam 18. In this embodiment, preferably, the structure of the hanger rod 14 is still retained in the resting water collecting device 13, so as to prevent the water collecting device 13 from shaking due to the influence of external factors.

Example 2:

as shown in fig. 16, 17 and 20, the power generation device for recovering potential energy of a cooling tower in a circulating water-spraying rain area comprises a water collecting device 13 and a main water tank 5, wherein the water collecting device is arranged below a water-spraying filler area 2 in a mechanical ventilation counter-flow wet cooling tower; the mechanical ventilation counter-flow wet cooling tower comprises a mechanical ventilation counter-flow wet cooling tower with air intake at two sides, a mechanical ventilation counter-flow wet cooling tower with air intake at one side and a fog-eliminating water-saving mechanical ventilation counter-flow wet cooling tower.

As shown in fig. 17, the power generation system according to the present invention can be applied not only to a single mechanical draft counter-flow type wet cooling tower but also to a mechanical draft counter-flow type wet cooling tower group, and in practical applications, the number of mechanical draft counter-flow type wet cooling towers may be selected according to the use requirement.

As shown in fig. 17 to 21, the air intake sides of the mechanical draft counter flow wet cooling tower group with double-side air intake are symmetrical, the rain and water area 3 is provided with the support column 4, and the main water tank 5 penetrates through the mechanical draft counter flow wet cooling tower group and is arranged along the center line of the mechanical draft counter flow wet cooling tower group. As shown in fig. 21, support beams 7 are fixed between the support columns 4 on both sides of the arrangement position of the main water tank 5, the support beams 7 are perpendicular to the main water tank 5, and the main water tank 5 is mounted on the support beams 7.

As shown in fig. 19, the planar shape of the main water tank 5 is rectangular, and the sectional shape of the main water tank 5 is one of triangular, stepped, rectangular, and "pi".

As shown in fig. 3 and 17, the outlet of the main water tank 5 is connected with the water conduit 8, the other end of the water conduit 8 is connected with the water turbine 9, the water turbine 9 is provided with the corresponding generator 10, in practical application, the number of the water turbines 9 is set according to the use requirement, and the water turbine 9 is arranged in the water collecting tank 19 or outside the cooling tower. When the water turbine 9 is arranged in the water collecting tank 19, circulating water discharged from a tail water pipeline 11 at the rear end of the water turbine 9 enters the water collecting tank 19, and the water collecting tank 19 is communicated with a circulating water pump forebay 12. When the water turbine 9 is arranged outside the cooling tower, the tail water pipeline 11 at the rear end of the water turbine 9 is communicated with the water collecting tank 19 or the circulating water pump forebay 12, and the water collecting tank 19 is communicated with the circulating water pump forebay 12.

And a circulating water pump is arranged in the circulating water pump forebay 12, a water outlet of the circulating water pump is connected with a heat exchanger through a pipeline, and an outlet of the heat exchanger is communicated with the natural ventilation counter-flow wet cooling tower through a pipeline.

In this embodiment, the structure and installation manner of the water collecting device 13 are the same as those of embodiment 1, and both have two structural forms, namely a suspended type and a shelved type, as shown in fig. 20 (only the schematic layout of the shelved water collecting device 13 is preferably shown in the drawings of this embodiment), the water collecting device 13 is specifically arranged as follows:

the suspension type water collecting device 13 comprises a suspender 14, a water collecting plate 15 and a water collecting tank 16, wherein a plurality of rows of suspenders 14 are vertically fixed below a filler supporting beam 17 in the mechanical ventilation counter-flow wet cooling tower with air entering from two sides, the bottom of the suspender 14 is connected with the water collecting tank 16 through a connecting rod, and one side of the water collecting tank 16 extends upwards and turns outwards; one end of the water collection tank 16 is closed, the other end of the water collection tank is opened and is communicated with the main water tank 5, and the closed end of the water collection tank 16 is higher than the other end of the water collection tank, so that circulating water can be better collected and then discharged into the main water tank 5; the water collecting plate 15 is arranged between two adjacent rows of the suspension rods 14, one end of the water collecting plate 15 is fixed with the filler supporting beam 17, and the other end of the water collecting plate 15 is obliquely erected on one side of the water collecting tank 5 which extends upwards and turns outwards, so that water in the water spraying filler area 2 can flow into the water collecting tank 16 along the water collecting plate 15.

The shelving type water collecting device 13 is additionally provided with a shelving beam 18 on the original basis of the suspension type water collecting device 13, as shown in fig. 20 and 22, the shelving beam 18 is fixed on the support upright post 4 at the bottom of the water collecting tank 16, the shelving beam 18 is parallel to the main water tank 5, and the water collecting tank 16 is placed on the shelving beam 18; compared with the suspended water collecting device 13, the stress point of the resting water collecting device 13 is changed from the hanger rod 14 to the resting beam 18. In the resting water collecting device 13, the hanger rod 14 can be determined whether to be retained according to the actual use environment and the use requirement, and in the embodiment, the hanger rod 14 structure is preferably not retained in the resting water collecting device 13.

The process of generating electricity by using the power generation device for recovering the potential energy of the circulating water rain area of the cooling tower is as follows:

circulating water in the cooling tower is collected by a water collecting device 13 below the water spraying filler area 2, firstly is collected into a main water tank 5 through a water collecting tank 16, then enters the water diversion pipeline 8 along the main water tank 5, the height difference exists between the liquid level of the main water tank 5 and the liquid level of the water collection tank 19, and between the liquid level of the main water tank 5 and the liquid level of the circulating water pump forebay 12, circulating water enters the water turbine 9 after flowing into the water diversion pipeline 8, the water turbine 9 is driven to rotate under the action of the potential energy of the circulating water, the generator 10 is further pushed to generate electricity, finally the circulating water is discharged into a cooling tower water collecting tank 19 or a circulating water pump forebay 12 through a tail water pipeline 11, then the circulating water is sent to the heat exchanger for heat exchange through the circulating water pump and then is continuously sent to the cooling tower for circulation, therefore, the circulating water can be continuously collected into the main water tank 5 by the water collecting device 13, so that the water turbine 9 is continuously driven to rotate, and the engine 10 is continuously driven to generate power.

The utility model fully utilizes the potential energy difference of the circulating water in the cooling tower, converts the potential energy of the circulating water into electric energy for utilization, meets the requirements of energy conservation and environmental protection, can reduce the power consumption of industrial production and improve the benefit of industrial production; in addition, collect the circulating water through setting up and receive water installation 13 and pack the district below at the trickle for 3 resistances in trickle rain district reduce, and the cooling tower air volume increases, thereby can improve cooling tower cooling capacity and industrial production benefit correspondingly, still can reduce the cooling tower noise simultaneously.

The above-described example is a preferred embodiment of the present invention, but the present invention is not limited to the above-described embodiment, and the power generation apparatus according to the present invention can be applied to various cooling towers, and the application objects include not only a single-shaft natural draft counter flow type wet cooling tower, a double-shaft natural draft counter flow type wet cooling tower, a mechanical draft counter flow type wet cooling tower with air supplied from both sides, but also a mechanical draft counter flow type wet cooling tower with air supplied from one side, and a fog-eliminating water-saving mechanical draft counter flow type wet cooling tower. Any obvious improvement, replacement or modification by a person skilled in the art can be made without departing from the spirit of the utility model.

Claims (9)

1. The utility model provides a retrieve power generation facility of cooling tower circulating water rain district potential energy, its characterized in that, including setting up receipts water installation (13) and main basin (5) of trickle filler district (2) below in the cooling tower, receive water installation (13) and be connected with main basin (5), main basin (5) export is connected with leading water pipeline (8), and leading water pipeline (8) other end is connected with hydraulic turbine (9), and hydraulic turbine (9) are supporting to have generator (10).

2. The power generation device for recovering the potential energy of the circulating water rain area of the cooling tower according to the claim 1, wherein the cooling tower is a natural ventilation counter-flow wet cooling tower, the plane of the water spraying filler area (2) in the cooling tower is of a circular structure, and the main water tank (5) is arranged along the diameter of the plane of the water spraying filler area (2).

3. The power generation device for recovering the potential energy of the circulating water rain area of the cooling tower as claimed in claim 1, wherein the cooling tower is a mechanical draft counter-flow wet cooling tower, and the main water tank (5) is arranged along the central line of the mechanical draft counter-flow wet cooling tower.

4. The power generation device for recovering the potential energy of the circulating water rain area of the cooling tower according to claim 1, wherein support columns (4) are arranged in the cooling tower, support beams (7) are fixed between the support columns (4) on two sides of the arrangement position of the main water tank (5), and the main water tank (5) is installed on the support beams (7).

5. The power generation device for recovering the potential energy of the circulating water rain area of the cooling tower as claimed in claim 1, wherein the cross-sectional shape of the main water tank (5) is one of a triangle, a step, a rectangle and a pi-shaped shape.

6. The power generation device for recovering the potential energy of the circulating water rain area of the cooling tower as claimed in claim 1, wherein the water turbine (9) is arranged in a water collecting tank (19) in the cooling tower, the circulating water discharged from a tail water pipeline (11) at the rear end of the water turbine (9) enters the water collecting tank (19), the water collecting tank (19) is communicated with a circulating water pump forebay (12), a water outlet of a circulating water pump in the circulating water pump forebay (12) is connected with the heat exchanger through a pipeline, and an outlet of the heat exchanger is communicated with the cooling tower through a pipeline.

7. The power generation device for recovering the potential energy of the circulating water rain area of the cooling tower as claimed in claim 1, wherein the water turbine (9) is arranged outside the cooling tower, and a tail water pipeline (11) at the rear end of the water turbine (9) is communicated with a circulating water pump forebay (12) or a water collecting sump (19); the water collecting tank (19) is communicated with the circulating water pump forebay (12), a circulating water pump water outlet in the circulating water pump forebay (12) is connected with the heat exchanger through a pipeline, and an outlet of the heat exchanger is communicated with the cooling tower through a pipeline.

8. The power generation device for recovering the potential energy of the circulating water rain area of the cooling tower according to claim 1, wherein the water collection device (13) comprises hanger rods (14), a water collection plate (15) and a water collection tank (16), a plurality of rows of hanger rods (14) are vertically fixed below a filler support beam (17) in the cooling tower, the bottoms of the hanger rods (14) are connected with the water collection tank (16) through connecting rods, one side of the water collection tank (16) extends upwards and turns outwards, one end of the water collection tank (16) is closed, the other end of the water collection tank (16) is open and is communicated with the main water tank (5), the water collection plate (15) is arranged between two adjacent rows of hanger rods (14), one end of the water collection plate (15) is fixed with the filler support beam (17), and the other end of the water collection plate is obliquely erected on one side of the water collection tank (16) which extends upwards and turns outwards.

9. The power generation device for recovering the potential energy of the circulating water rain area of the cooling tower according to the claim 8 is characterized in that support columns (4) are arranged in the cooling tower, a layer of rest beams (18) are fixed between the support columns (4), and the water collecting tank (16) rests on the rest beams (18).

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