Water collecting device for recovering potential energy of circulating water rain area of cooling tower and cooling tower
By designing the main water tank and overflow structure in the cooling tower, the problem that the cooling tower fails to recover the potential energy of the circulating water rain zone is solved, and efficient collection of water flow potential energy and energy-saving power generation is achieved, ensuring safe overflow under adverse operating conditions and keeping operation quiet.
Patent Information
- Application Number
- CN202421929500.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-08-09
AI Technical Summary
Conventional mechanical ventilation cooling towers fail to effectively recover the gravity potential energy in the circulating water rain area under the filler, resulting in waste of potential energy and may cause unsafe overflow in the case of excessive incoming water or insufficient water discharge.
A cooling tower water collection device is designed, including a main water tank and an overflow structure. The main water tank is equipped with an overflow tank and an overflow pipe. The top end of the overflow structure is lower than the side wall of the main water tank and the bottom extends into the pool for efficient collection of water flow potential energy and safely overflow to the pool when there is insufficient incoming water or water discharge.
It realizes efficient collection of water flow potential energy, and uniformly gathers through the main water tank and drains to the power generation device for energy-saving power generation. At the same time, safe overflow under adverse working conditions, avoids splashing and noise, and keeps the operating environment quiet and tidy.
Smart Images
Figure CN223122037U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of energy conservation of cooling systems, and more particularly, to a water collecting device and a cooling tower for recovering the potential energy of the circulating water rain area of a cooling tower. Background Art
[0002] Conventional mechanically ventilated cooling towers do not recover the gravitational potential energy of the circulating water rain area below the packing, and can only perform water cooling, resulting in waste of potential energy. In related technologies, the cooling tower recovers the gravitational potential energy of the circulating water rain area through a high-level water collecting device and a branch water trough. The rain curtain in the rain area below the packing is collected by a raised main water trough. Since the volume of the main water trough is limited, overflow may occur under the conditions of excessive incoming water and insufficient drainage. How to overflow safely and efficiently is a technical problem to be solved at present. Summary of the Utility Model
[0003] The purpose of the present disclosure is to provide a water collecting device and a cooling tower for recovering the potential energy of the circulating water rain area of a cooling tower, so as to at least partially solve the problems existing in the related technologies.
[0004] To achieve the above purpose, the present disclosure provides a water collecting device for recovering the potential energy of the circulating water rain area of a cooling tower. The cooling tower includes a packing area and a water pool. The water collecting device includes a main water trough arranged below the packing area. An overflow structure is provided in the main water trough. The top end of at least one side of the overflow structure is lower than the top end of the side wall of the main water trough. The bottom of the overflow structure extends out of the bottom wall of the main water trough and extends into the water pool.
[0005] Optionally, the overflow structure includes an overflow trough and an overflow pipe arranged in sequence from top to bottom and communicating with each other. The overflow trough is arranged in the main water trough, and the overflow pipe extends out of the bottom wall of the main water trough.
[0006] Optionally, a plurality of the overflow pipes are installed at the bottom of the overflow trough.
[0007] Optionally, the bottom wall of the overflow trough is inclined.
[0008] Optionally, the bottom wall of the overflow trough is inclined at an angle of 10° to 30°.
[0009] Optionally, the top end of the overflow trough is configured to be serrated.
[0010] Optionally, the bottom end of the overflow pipe extends into the water pool.
[0011] According to the second aspect of the present disclosure, there is also provided a cooling tower, including a housing, a packing area, a water pool, and the above-mentioned water collecting device. A plurality of spaced branch water troughs are installed below the packing area, and the water outlet ends of the branch water troughs are connected to the water inlet end of the main water trough.
[0012] Optionally, the water collection device is installed inside the housing and directly below the packing area.
[0013] Optionally, the water collection device is installed outside the housing.
[0014] Through the above technical solution, the main water tank can efficiently collect the water flow converged from the water curtain in the rain area, thereby collecting more water flow potential energy. The water is uniformly converged and diverted to the power generation device through the main water tank for power generation, which can save energy and generate economic benefits. When overflow occurs under the conditions of excessive incoming water and insufficient water discharge, the water flow can quickly flow from the overflow structure to the water pool, so that the water in the main water tank can overflow safely and efficiently.
[0015] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. They are used together with the following specific implementation to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:
[0017] Figure 1 is a schematic structural diagram of a cooling tower provided by an exemplary embodiment of the present disclosure;
[0018] Figure 2 is Figure 1 a cross-sectional view taken along the line A-A in
[0019] Figure 3 is a schematic structural diagram of a water collection device for recovering the potential energy of the rain area of the cooling tower circulating water provided by an exemplary embodiment of the present disclosure;
[0020] Figure 4 is a partial schematic view of the top of the overflow tank in the water collection device provided by an exemplary embodiment of the present disclosure.
[0021] DESCRIPTION OF THE REFERENCE NUMERALS
[0022] 1 - packing area; 2 - water pool; 3 - main water tank; 4 - overflow structure; 41 - overflow tank; 42 - overflow pipe; 5 - housing; 6 - branch water tank; 7 - water distribution system; 8 - power generation diversion pipe; 9 - support column DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] The following detailed description of the specific embodiments of the present disclosure is provided in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustrating and explaining the present disclosure, and are not used to limit the present disclosure.
[0024] In this disclosure, unless otherwise stated, the orientation terms "upper", "lower", "top", and "bottom" are defined based on the actual usage direction of the relevant components. "Inner" and "outer" refer to the outline of the corresponding components themselves. In this disclosure, when the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.
[0025] Referring to Figures 1 to 4 , this disclosure provides a water collection device for recovering the potential energy of the rain area in the circulating water of a cooling tower. The cooling tower includes a packing area 1 and a water tank 2. The water collection device may include a main water trough 3 provided below the packing area 1. An overflow structure 4 is provided in the main water trough 3. The top end of at least one side of the overflow structure 4 is lower than the top end of the side wall of the main water trough 3. The bottom of the overflow structure 4 extends out of the bottom wall of the main water trough 3 and extends to the water tank 2. Among them, the water distribution system 7 is connected to the upper tower water pipe and is used to evenly distribute hot water. The water distribution system 7 sprays the hot water to ensure full contact with the air. The sprayed hot water falls on the packing area 1. The main function of the packing area 1 is to increase the heat dissipation, extend the residence time of the cooling water, and increase the heat transfer area to increase the heat transfer amount.
[0026] Through the above technical solution, the main water trough can efficiently collect the water flow formed by the water curtain in the rain area, thereby collecting more water flow potential energy. The water is uniformly converged and diverted to the power generation device for power generation through the main water trough, which can save energy and generate electricity and has economic benefits; when overflow occurs under the working conditions of excessive incoming water and insufficient drainage, the water flow can quickly flow from the overflow structure to the water tank, so that the water in the main water trough can overflow safely and efficiently.
[0027] In some embodiments, referring to Figure 3 , the overflow structure 4 may include an overflow trough 41 and an overflow pipe 42 that are arranged in sequence from top to bottom and are interconnected. Among them, the overflow trough 41 is arranged in the main water trough 3, and the overflow pipe 42 extends out of the bottom wall of the main water trough 3. The water in the main water trough 3 overflows into the overflow trough 41 and then flows to the water tank 2 through the overflow pipe 42. Among them, both the overflow trough 41 and the main water trough 3 are square troughs, and the overflow trough 41 and the main water trough 3 can share the same side wall, reducing the material consumption.
[0028] Furthermore, a plurality of overflow pipes 42 may be installed at the bottom of the overflow trough 41 to facilitate the outflow of the overflow water. The length of the overflow trough 41 may be substantially the same as the length of the main water trough 3, so that more water flow can overflow quickly. It should be noted that the "length" mentioned above refers to the dimension in the direction perpendicular to Figure 1 the drawing plane.
[0029] As an exemplary embodiment of this disclosure, referring to Figure 3, the bottom wall of the overflow tank 41 can be arranged obliquely. The bottom wall of the overflow tank 41 is provided with a certain slope, which is convenient for the air in the main water tank 3 to be discharged and avoids the air from accumulating under the bottom wall of the overflow tank 41.
[0030] Specifically, the bottom wall of the overflow tank 41 can be arranged obliquely at an angle of 10° to 30°, and specifically can be arranged at an angle of 15°. The present disclosure does not limit the inclination angle of the bottom wall of the overflow tank 41.
[0031] In some embodiments, referring to Figure 4 , the top end of the overflow tank 41 can be configured in a toothed shape. When the water level in the main water tank 3 rises to the overflow water level, a large amount of water can overflow into the overflow tank 41 through the toothed groove, making the overflow more uniform.
[0032] According to an exemplary embodiment of the present disclosure, referring to Figure 1 , the bottom end of the overflow pipe 42 can extend into the water pool 2. Specifically, the bottom end of the overflow pipe 42 can extend below the normal water level of the water pool 2. In this way, the overflow is not intuitive, there will be no sound or splashing of water, and a quiet and clean operating environment can be maintained. In other embodiments, the bottom end of the overflow pipe 42 can be arranged above the normal water level of the water pool 2. With this arrangement, once an overflow occurs, the water flowing out from the bottom of the pipe into the water pool 2 will make a sound and splash water, and the situation of the overflow can be quickly detected.
[0033] In addition, the overflow pipe 42 is preferably arranged behind the air guiding surface of the support column 9 of the cooling tower, which can not increase the overall windward area of the cooling tower and does not increase the air inlet resistance of the cooling tower.
[0034] The main water tank 3 can be made of steel, fiberglass, stainless steel, plastic and other materials, and the main water tank 3 has a flat bottom or a semi-circular bottom. Different processing methods can be adopted according to different materials. For example, if steel plates, stainless steel plates, etc. are used, the bottom of the water tank can be set as flat as possible; if fiberglass, plastic and other materials are used, the bottom of the water tank can be set as a semi-circular bottom or a flat bottom.
[0035] To increase the strength and stiffness of the water tank, external ribs or internal ribs can be added to the main water tank wall. By using local external ribs, the thickness of the main water tank 3 can be reduced, and the overall material consumption can be reduced. If a steel water tank is used, the inside and outside of the main water tank 3 need to be coated with an anti-corrosion paint to ensure durability. The main water tank 3 needs to have a certain volume and cannot be made too small, and the water inlet regulating volume of the hydraulic generator system at the rear end of the system can be adjusted accordingly.
[0036] According to the second aspect of the present disclosure, as Figure 1 、 Figure 2As shown in the figure, a cooling tower is also provided. The cooling tower may include a housing 5, a packing area 1, a water tank 2, and the above-mentioned water collection device. A plurality of spaced-apart branch water troughs 6 are installed below the packing area 1, and the water outlet end of the branch water trough 6 is connected to the water inlet end of the main water trough 3. Through the above arrangement, the high-level water collection device and the branch water trough 6 are located inside the cooling tower and arranged in the lower space of the tower. The water outlet end of the high-level water collection device faces the lower branch water trough 6. The high-level water collection device is used to collect the falling water to achieve high-level interception, and the branch water trough 6 is used to receive the intercepted falling water. A plurality of interfaces are formed at one end of the main water trough 3, corresponding to connect to a plurality of branch water troughs 6, and the main water trough 3 is used to converge the water flows in all the branch water troughs 6. The main water trough 3 is communicated with the power generation diversion pipe 8, and the power generation diversion pipe 8 is communicated with the water turbine generator outside the cooling tower. The power generation diversion pipe 8 and the water turbine generator are located outside the cooling tower. The water flow in the main water trough 3 is led out to the generator, and the water flow with potential energy impacts the generator to realize hydraulic power generation. This cooling tower has all the beneficial effects of the above-mentioned water collection device, which will not be elaborated here.
[0037] In an embodiment of the present disclosure, the main water trough 3 is arranged on one side of the cooling tower, and the water flows in the branch water troughs 6 can be centrally collected into the main water trough 3 on one side of the cooling tower, which can concentrate the water flow. The main water trough 3 is arranged on one side of the cooling tower, which can quickly collect the water flow in the branch water trough 6 and minimize the interfaces with the branch water troughs 6.
[0038] The trough wall of the main water trough 3 close to the inner side of the cooling tower is lower than the trough wall close to the outer side of the cooling tower. When adjusting the water inflow of the cooling tower at the front end of the main water trough system and starting or closing the hydraulic generator at the rear end, etc., it may cause the water level in the main water trough 3 to change and result in overflow. The lower trough wall on the inner side of the cooling tower and the higher trough wall on the outer side can make the overflow water overflow to the water tank 2 inside the cooling tower through the inner trough wall, and will not cause the water in the trough to splash outside the cooling tower.
[0039] Specifically, the branch water trough 6 is communicated with the main water trough 3 through a flexible expansion joint. The flexible expansion joint is preferably made of rubber material, which can adjust the construction and installation errors, facilitate the connection of the branch water trough 6 to the main water trough 3, and reduce the local stress generated at the interface due to uneven settlement of the support structures of the branch water trough 6 and the main water trough 3, thus preventing damage.
[0040] In an embodiment of the present disclosure, referring to Figure 1 , Figure 2 , the water collection device can be installed inside the housing 5 and placed directly below the packing area 1. Although placing the water collection device inside the cooling tower occupies the area between the air inlet of the cooling tower and the packing area 1, increasing the local wind resistance, it is beneficial for winter anti-freezing. At the same time, the main water trough 3 is located inside the housing 5 and is set as an open structure, which can directly collect the rain curtain under the packing area 1 above the main water trough 3, eliminating the need to set a high-level water collection device directly above the main water trough 3 and reducing the structural layout.
[0041] In another embodiment of the present disclosure, the water collection device can be installed outside the housing 5. Placing the water collection device outside the cooling tower does not occupy the area between the air inlet of the cooling tower and the packing area 1, allowing for smoother air intake and less air resistance.
[0042] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.
[0043] In addition, it should be noted that, in the case of no conflict, the various specific technical features described in the above specific embodiments can be combined in any suitable manner. To avoid unnecessary repetition, the present disclosure does not separately describe various possible combination methods.
[0044] Furthermore, any combination can be made among various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.
Claims
1. A water collection device for recovering the potential energy of the rain area of the circulating water in a cooling tower, the cooling tower comprising a packing area and a water pool, characterized in that, The water collection device includes a main water tank arranged below the packing area. An overflow structure is provided in the main water tank. The top end of at least one side of the overflow structure is lower than the top end of the side wall of the main water tank. The bottom of the overflow structure extends out of the bottom wall of the main water tank and extends to the water pool.
2. The water collecting device for recovering the potential energy of the rain area of the circulating water in the cooling tower according to claim 1, wherein, The overflow structure includes an overflow tank and an overflow pipe which are arranged in sequence from top to bottom and are interconnected. Among them, the overflow tank is placed in the main water tank, and the overflow pipe extends out of the bottom wall of the main water tank.
3. The water collecting device for recovering the potential energy of the rain area of the circulating water in the cooling tower according to claim 2, characterized in that, A plurality of the overflow pipes are installed at the bottom of the overflow tank.
4. The water collecting device for recovering the potential energy of the rain area of the circulating water in the cooling tower according to claim 2, characterized in that, The bottom wall of the overflow tank is arranged obliquely.
5. The water collecting device for recovering the potential energy of the rain area of the circulating water in the cooling tower according to claim 4, characterized in that, The bottom wall of the overflow tank is arranged obliquely at an angle of 10° to 30°.
6. The water collecting device for recovering the potential energy of the rain area of the circulating water in the cooling tower according to claim 2, characterized in that, The top end of the overflow tank is configured to be serrated.
7. The water collecting device for recovering the potential energy of the rain area of the circulating water in the cooling tower according to claim 2, wherein, The bottom end of the overflow pipe extends into the water pool.
8. A cooling tower, characterized in that, It includes a housing, a packing area, a water pool and the water collection device according to any one of claims 1-7. A plurality of spaced support water tanks are installed below the packing area, and the water outlet end of the support water tank is connected to the water inlet end of the main water tank.
9. The cooling tower according to claim 8, characterized in that, The water collection device is installed in the housing and is placed directly below the packing area.
10. The cooling tower according to claim 8, wherein, The water collection device is installed outside the housing.