In-tower dispersed assembly type cooling tower potential energy recovery power generation system

Abstract

The utility model discloses an in-tower dispersed assembly type cooling tower potential energy recovery power generation system which comprises a cooling tower and a high-position water collecting device in the cooling tower, the water discharging end of the high-position water collecting device is opposite to branch water collecting grooves below, a connecting pipe is communicated between the branch water collecting grooves, the connecting pipe is communicated with a downward through-flow pipe, and the through-flow pipe is communicated with a hydraulic generator. The hydro-generator is located in the cooling tower. The device has the beneficial effects that a traditional mode that water flow is collected to the main water tank through the branch water collecting tanks and then the main water tank is connected with the large hydraulic generators is adjusted to a mode that the water flow is dispersed to the small hydraulic generators for power generation through the supporting columns and the assembling units nearby. Each assembly unit is provided with a through-flow pipe (the through-flow pipe can be used as a supporting column, namely a supporting column and a through-flow pipeline, and space is saved), the lower portion of the through-flow pipe is provided with a hydraulic generator, other supporting columns can be made of various structural steel, the lower space of the cooling tower is saved, and blocking of the lower air inlet space of the cooling tower is reduced.

Description

Technical Field

[0001] This application belongs to the field of energy conservation, and particularly relates to a tower-internal decentralized prefabricated cooling tower potential energy recovery power generation system. The gravitational potential energy of the water curtain in the rain area of the cooling tower (including natural draft cooling towers and mechanical draft cooling towers) is recovered through a high-position water collection device and a branch water collection tank, and then electricity is generated through a decentralized prefabricated power generation device installed below the high-position water collection device, which can save energy and generate electricity and has economic benefits. Background Art

[0002] There is currently a power generation system that recovers the potential energy of the rain area of the circulating water in the cooling tower. The circulating cooling water in the cooling tower is collected below the packing, and the height potential energy of the rain area in the water spraying area is used to drive a water turbine to generate electricity.

[0003] Existing problems: The high-position water collection device and the branch water collection tank have large loads and need to be supported. The water flow is large. Conventionally, the water flow is collected in the main water tank and then sent to a generator outside the tower through the main water tank for power generation. The main water tank itself occupies a certain volume, which may affect the air intake effect of the cooling tower. The volume of the main water tank outside the tower for water collection is large and the elevation is high, and it needs to be led outside to a generator installed in an open space for power generation. The cost of water diversion outside the tower is high and the construction period is long. Utility Model Content

[0004] The purpose of this application is to provide a tower-internal decentralized prefabricated cooling tower potential energy recovery power generation system, which solves the problems of large volume and high cost of the existing power generation system.

[0005] The purpose of this application is achieved through the following technical solutions:

[0006] A tower-internal decentralized prefabricated cooling tower potential energy recovery power generation system includes a cooling tower and a high-position water collection device inside the cooling tower. The water outlet end of the high-position water collection device faces the lower branch water collection tank. A connecting pipe is connected between the branch water collection tanks, and the connecting pipe is connected to a downward through-flow pipe below, and the through-flow pipe is connected to a water turbine generator, and the water turbine generator is located inside the cooling tower.

[0007] Further, a water distribution system, a sprinkler head, a packing, and a high-position water collection device are arranged in the cooling tower from top to bottom in sequence, and the water distribution system is connected to the sprinkler head.

[0008] Further, a water collector is also arranged above the water distribution system inside the cooling tower, and a fan is arranged at the top of the cooling tower.

[0009] Further, the high-position water collection device includes a water collection inclined plate, the upper end of the water collection inclined plate is located below the packing, and the lower end of the water collection inclined plate is located at the notch of the branch water collection tank.

[0010] Further, a splash guard is provided at the lower end of the water collection inclined plate.

[0011] Further, the upper end of the water collecting inclined plate is fixed on the tower beam, and the lower end of the water collecting inclined plate is fixed on the extended end of the supporting water collecting tank.

[0012] Further, the supporting water collecting tank has a U-shaped cross-section.

[0013] Further, support columns are provided below the supporting water collecting tank and / or the connecting pipe, and a support beam is connected between the support columns.

[0014] Further, the supporting water collecting tank is divided into several assembly units, and the supporting water collecting tanks within the assembly units are all connected to a connecting pipe.

[0015] Further, the connecting pipe is used as a support beam, and / or the flow-through pipe is used as a support column.

[0016] Further, the flow-through pipe includes a main flow-through pipe and a bypass flow-through pipe. One end of the bypass flow-through pipe is communicated with the main flow-through pipe, and the other end of the bypass flow-through pipe is communicated with the water turbine generator.

[0017] Further, an outlet support member is provided at the water outlet of the water turbine generator.

[0018] Advantages of the present application:

[0019] (1) The traditional method of collecting water flow from the supporting water collecting tank to the main water collecting tank and then connecting the main water collecting tank to a large water turbine generator is adjusted to the method of dispersing the water volume to multiple small water turbine generators for power generation through several support columns and assembly units nearby. Each assembly unit is provided with a flow-through pipe (the flow-through pipe itself can be used as a support column, that is, as both a support column and a flow-through pipe, saving space). A water turbine generator is arranged below the flow-through pipe, and other support columns can use various steel sections, saving the space at the lower part of the cooling tower and reducing the blockage of the air inlet space at the lower part of the cooling tower.

[0020] (2) The above saves space (the flow-through pipe itself can be used as a support column, that is, as both a support column and a flow-through pipe) and materials (the flow-through pipe itself can be used as a support column, that is, as both a support column and a flow-through pipe) without affecting the air inlet effect of the cooling tower; several in-tower dispersed assembly units are adopted, and multiple water turbine generators are assembled and installed (reducing the construction costs of the main water collecting tank and the front shaft of the water turbine generator built for concentrating the water flow). The installation cost is low and the construction period is short.

[0021] The main solution of the present application and its various further alternative solutions can be freely combined to form multiple solutions, all of which are solutions that can be adopted and claimed in the present application; and in the present application, (each non-conflicting alternative) can be freely combined with each other and with other alternatives. Those skilled in the art can understand that there are various combinations according to the prior art and common general knowledge after understanding this solution, all of which are the technical solutions to be protected in the present application and will not be enumerated here. Brief Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of the present application (1 / 4 structure).

[0023] Figure 2 is Figure 1 A - A sectional view (schematic diagram of the arrangement of the water collecting and supporting trough) of

[0024] Figure 3 It is a schematic diagram of the partition of the water collecting and supporting trough assembly unit.

[0025] Figure 4 is Figure 3 The schematic structural diagram of a single assembly unit in

[0026] Figure 5 is Figure 4 B - B sectional view of

[0027] Figure 6 is Figure 4 C - C sectional view of

[0028] In the figure: 1 - cooling tower, 2 - fan, 3 - water collector, 4 - water distribution system, 5 - nozzle, 6 - packing, 7 - high - level water collection device, 8 - water collecting and supporting trough, 9 - connecting pipe, 10 - flow - through pipe, 11 - water turbine generator, 12 - outlet support; 101 - tower body beam, 701 - water collection inclined plate, 702 - splash guard, 801 - support column, 802 - support beam, 1001 - main flow - through pipe, 1002 - flow - through bypass pipe. Detailed Description of the Preferred Embodiments

[0029] The present application will be further described below in conjunction with specific embodiments and the drawings.

[0030] Referring to Figures 1 to 6 as shown, a tower - internal decentralized prefabricated cooling tower potential energy recovery power generation system includes a cooling tower 1, a fan 2, a water collector 3, a water distribution system 4, a nozzle 5, a packing 6, a high - level water collection device 7, a water collecting and supporting trough 8, a connecting pipe 9, a flow - through pipe 10, a water turbine generator 11 and an outlet support 12.

[0031] At the top of the cooling tower 1, a fan 2 is arranged. The fan 2 is used to provide wind pressure to achieve the rapid upward flow of air, accelerating the cooling and heat dissipation effect. Inside the cooling tower 1, a water collector 3, a water distribution system 4, a spray head 5, a packing 6 and a high-level water collector 7 are arranged in sequence from top to bottom. The water collector 3 is located below the fan 2 but above other components, separating the wet air to be discharged and recovering the water therein. The water distribution system 4 is connected to the upper tower water pipe and is used to evenly distribute the hot water. The water distribution system 4 is connected to the spray head 5, and the spray head 5 sprays the hot water to ensure full contact with the air. The sprayed hot water falls on the packing 6. The main function of the packing 6 is to increase the heat dissipation amount, extend the residence time of the cooling water, and increase the heat transfer area to increase the heat transfer amount.

[0032] The high-level water collector 7, the branch water collecting tank 8, the connecting pipe 9, the flow-through pipe 10, the water turbine generator 11 and the outlet support member 12 are all located inside the cooling tower 1 and arranged in the lower space of the tower. The lower water end of the high-level water collector 7 faces the branch water collecting tank 8 below. The high-level water collector 7 is used to collect the falling water to achieve high-level interception, and the branch water collecting tank 8 is used to receive the intercepted falling water. The branch water collecting tanks 8 are connected by a connecting pipe 9, and the connecting pipe 9 converges the falling water. The connecting pipe 9 is connected to the flow-through pipe 10 below and downward, and the converged falling water enters the flow-through pipe 10. The flow-through pipe 10 is connected to the water turbine generator 11, and the falling water flow impacts the generator to achieve hydroelectric power generation.

[0033] The high-level water collector 7 includes a water collecting inclined plate 701 and a splash guard 702. The upper end of the water collecting inclined plate 701 is located below the packing 6, and the lower end of the water collecting inclined plate 701 is located at the notch of the branch water collecting tank 8. Then, the water collecting inclined plate 701 inclinedly arranged below the packing 6 intercepts the water flow, and then the water flow flows into the branch water collecting tank 8 under the action of gravity and the guiding of the inclined plate. A splash guard 702 is provided at the lower end of the water collecting inclined plate 701 to prevent the water flow from splashing and affecting the water collection effect.

[0034] The upper end of the water collecting inclined plate 701 is fixed to the tower body beam 101 by bolts, and the lower end of the water collecting inclined plate 701 is fixed to the extended end of the branch water collecting tank 8 by welding or bonding to ensure the stable placement of the water collecting inclined plate 701 itself.

[0035] The branch water collecting tank 8 has a U-shaped cross-section and is used to receive the water flowing down from the inclined plate. One U-shaped end of the branch water collecting tank 8 extends to support the inclined plate. The lower end of the branch water collecting tank 8 is connected and communicated with the connecting pipe 9 through a flange interface. Support columns 801 are provided below the branch water collecting tank 8 and / or the connecting pipe 9, and a support beam 802 is connected between the support columns 801. The support columns 801 are supported on the ground to support the water tank and the pipeline, and the support beam 802 is used to strengthen the stability of the support columns.

[0036] The branch water collection tank 8 is divided into several assembly units. The branch water collection tanks 8 within the assembly units are all connected to a connecting pipe 9, and this connecting pipe 9 is connected to a flow-through pipe 10. Through the assembly type zoning, the whole is divided into several unit modules, which is convenient for layout and installation, convenient for water storage and energy conservation, and also convenient for subsequent maintenance.

[0037] The connecting pipe 9 is used as a support beam, and the flow-through pipe 10 is used as a support column. That is, the connecting pipe 9 and the flow-through pipe 10 not only serve as water pipes for water flow, but also serve as structural pipes for support, realizing multiple functions of a single pipe, saving costs and at the same time reducing space occupation.

[0038] The flow-through pipe 10 includes a flow-through main pipe 1001 and a flow-through bypass pipe 1002. One end of the flow-through bypass pipe 1002 is connected to the flow-through main pipe 1001, and the other end of the flow-through bypass pipe 1002 is connected to the water turbine generator 11. By dividing the flow-through pipe into two paths, the water flow rate of each pipeline can be flexibly regulated, and power generation diversion can be carried out according to needs.

[0039] At the water outlet of the water turbine generator 11, there is a water outlet support member 12, which is used to support the water outlet of the water turbine generator 11 and at the same time realizes the elevation of the water outlet for water flow. A steel reinforcement cage can be used to support the water outlet, which does not affect the water outlet and can ensure the stable placement of the generator.

[0040] The water flow process of the existing scheme: the upper tower water pipe of the cooling tower → the water distribution system → the spray heads in the cooling tower → the packing → the high-level water collection device → the branch water collection tank → the main water tank → the front shaft of the water turbine generator → the water turbine generator → the bottom pool of the cooling tower. The adjusted process proposed in this application: the upper tower water pipe of the cooling tower → the water distribution system → the spray heads in the cooling tower → the packing → the high-level water collection device → the branch water collection tank → the connecting pipe at the lower part of the branch water collection tank → the flow-through pipe at the lower part of the connecting pipe → the water turbine generator → the bottom pool of the cooling tower.

[0041] It can be seen that this application cancels the process of collecting water flow from the branch water collection tank to the main water tank. Considering there is no main water tank, after the high-level water collection device collects water into the branch water collection tank, it is then converged to the connecting pipe, and then energy-saving power generation is carried out through the flow-through pipe and the water turbine generator. This not only saves the material cost of arranging the main water tank, but also reduces the loss caused by the external diversion of potential energy, and does not cause too much adverse impact on the incoming air, having better economic benefits.

[0042] Several support columns are provided at the bottom of the water collecting and discharging trough and / or the connecting pipe. Diagonal braces and support beams can be added between the support columns for reinforcement. Adjacent 3 (or 4, or 6) support columns are taken as a whole as an assembly unit, and the assembly units fill the lower plane of the entire cooling tower. The support column at a certain fixed position in the assembly unit can be set as a through-flow pipe, which is generally arranged under the water collecting and discharging trough and can be rigidly connected (such as flange, welding, bonding, etc.) or flexibly connected (flexible rubber joint) to the connecting pipe. When a flexible connection is adopted, a fixed support needs to be additionally provided so that the load of the bottom of the water collecting trough and / or the connecting pipe is transmitted to the through-flow pipe through the fixed support. Flange interfaces are reserved at the lower part of all connecting pipes within the projection range of an assembly unit, and the interfaces are connected to the through-flow pipe. The connecting pipe can itself be used as a support beam.

[0043] Except for the support column where the through-flow pipe is located, other support columns, diagonal braces, and support beams can be made of various sections of steel or steel pipes, and the section steel and the wall thickness of the steel pipes are determined according to the load size. Other support columns can also be replaced by support beams, and the support beams transmit the load from the upper water collecting and discharging trough to the support columns of the cooling tower itself. The materials of the support columns, support beams, through-flow pipes, and connecting pipes can be steel, stainless steel, fiberglass reinforced plastic, steel-plastic composite, steel-lined plastic, or steel-lined rubber.

[0044] The through-flow pipe can lead the water flow in the water collecting and discharging trough downward. A hydraulic generator can be directly installed at the bottom of the through-flow pipe, or a Y-shaped bypass can be set to lead the water flow to the water turbine generator in the bypass. The generator adopts a vertical integral axial flow water turbine generator set or a vertical integral mixed flow water turbine generator set type. The generator is vertically installed above the water surface of the lower pool, and the tail water of the water turbine generator is directly discharged into the lower pool of the cooling tower.

[0045] The water collecting and discharging trough is drained through multiple vertical through-flow pipes, and the water flow in the through-flow pipes directly falls to impact the water turbine generator without converging the water flow to accumulate on one side of the cooling tower. Therefore, the slope that needs to be set for the water collecting and discharging trough does not need to be considered, which can save the potential energy of the rain area of the circulating water of the cooling tower collected, avoid the waste caused by the convergence of the slope of the water collecting and discharging trough, and allow more potential energy to be used for power generation. The cooling towers mentioned in this article include natural draft cooling towers and mechanical draft cooling towers. The attached drawings take the mechanical draft cooling tower as an example.

[0046] The basic example of the present application and its various further selected examples can be freely combined to form multiple embodiments, all of which are embodiments that can be adopted and claimed in the present application. In the solution of the present application, each selected example can be arbitrarily combined with any basic example and selected example.

[0047] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A potential energy recovery power generation system for a tower-integrated decentralized assembled cooling tower, comprising a cooling tower (1) and a high-level water collection device (7) inside the cooling tower (1), characterized in that: The water outlet end of the high-level water collection device (7) faces the lower branch water collection tank (8). A connecting pipe (9) is connected between the branch water collection tanks (8). The connecting pipe (9) is connected to a flow-through pipe (10) that is below and extends downward. The flow-through pipe (10) is connected to a water turbine generator (11), and the water turbine generator (11) is located inside the cooling tower (1).

2. The potential energy recovery power generation system of the in-tower decentralized prefabricated cooling tower according to claim 1, characterized in that: Inside the cooling tower (1), a water distribution system (4), spray nozzles (5), packing (6), and a high-level water collection device (7) are arranged in sequence from top to bottom. The water distribution system (4) is connected to the spray nozzles (5). A water collector (3) is also arranged above the water distribution system (4) inside the cooling tower (1), and a fan (2) is arranged at the top of the cooling tower (1).

3. The potential energy recovery power generation system of the tower-integrated decentralized prefabricated cooling tower according to claim 1, characterized in that: The high-level water collection device (7) includes a water collection inclined plate (701). The upper end of the water collection inclined plate (701) is located below the packing (6), and the lower end of the water collection inclined plate (701) is located at the notch of the branch water collection tank (8).

4. The potential energy recovery power generation system of the tower-integrated decentralized prefabricated cooling tower according to claim 3, characterized in that: A splash guard (702) is provided at the lower end of the water collection inclined plate (701). The upper end of the water collection inclined plate (701) is fixed to the tower body beam (101), and the lower end of the water collection inclined plate (701) is fixed to the extended end of the branch water collection tank (8).

5. The potential energy recovery power generation system of the in-tower decentralized prefabricated cooling tower according to claim 1, wherein: The branch water collection tank (8) has a U-shaped cross-section.

6. The potential energy recovery power generation system of the in-tower decentralized prefabricated cooling tower according to claim 1, characterized in that: Support columns (801) are provided below the branch water collection tank (8) and / or the connecting pipe (9), and a support beam (802) is connected between the support columns (801).

7. The potential energy recovery power generation system of the in-tower decentralized prefabricated cooling tower according to claim 1, characterized in that: The branch water collection tank (8) is divided into several assembly units, and the branch water collection tanks (8) within each assembly unit are all connected to a connecting pipe (9).

8. The potential energy recovery and power generation system of the in-tower decentralized prefabricated cooling tower according to claim 1 or 6, characterized in that: The connecting pipe (9) is used as a support beam, and / or the flow-through pipe (10) is used as a support column.

9. The potential energy recovery power generation system of the tower-integrated decentralized prefabricated cooling tower according to claim 1, wherein: The flow-through pipe (10) includes a flow-through main pipe (1001) and a flow-through bypass pipe (1002). One end of the flow-through bypass pipe (1002) is connected to the flow-through main pipe (1001), and the other end of the flow-through bypass pipe (1002) is connected to the water turbine generator (11).

10. The potential energy recovery power generation system of the tower-integrated decentralized prefabricated cooling tower according to claim 1 or 9, characterized in that: An outlet support member (12) is provided at the water outlet of the water turbine generator (11).

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