Tail water cooling device for hydropower station

Abstract

The utility model relates to the technical field of hydropower station equipment, in particular to a hydropower station tail water cooling device which comprises a treatment box body, supporting legs are fixedly connected to the four corners of the lower end of the treatment box body, cooling devices are installed in the supporting legs in a penetrating mode, and filtering devices are installed in clamping grooves in a clamped mode. The filtering device comprises six inserting rods, the upper portions of the outer surfaces of the six inserting rods are jointly and fixedly connected with a coarse filter screen disc, and the inserting rods are annularly arrayed in the clamping groove. According to the hydropower station tail water cooling device, efficient cooling is achieved through cooperative operation of refrigerant circulation and cold water heat exchange, multi-stage filtering is conducted through the filtering device provided with the net discs with different mesh diameters and the filters, and the supporting legs and the cooling parts which are reasonably arranged are matched to achieve the stable structure; therefore, cooling efficiency is improved, tail water impurities are purified, and long-term stable operation of the device is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of hydropower station equipment technology, and in particular to a tailrace cooling device for hydropower stations. Background Technology

[0002] During the operation of a hydropower station, tailwater temperature control is crucial. Traditional tailwater cooling methods are usually quite simple, such as natural cooling or a single cooling device. Natural cooling is greatly affected by ambient temperature and often fails to achieve the desired cooling effect during hot seasons. Using a single cooling device may result in low cooling efficiency and insufficient capacity to treat impurities in the tailwater. In terms of tailwater filtration, some existing technologies may only have simple filtration structures and cannot effectively remove impurities of different particle sizes in the tailwater, causing impurities to easily accumulate in the cooling device, affecting the cooling effect and the service life of the equipment. Therefore, we have introduced a tailwater cooling device for hydropower stations. Utility Model Content

[0003] The main purpose of this utility model is to provide a tailrace cooling device for hydropower stations, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A tailrace cooling device for a hydropower station includes a treatment tank. Support legs are fixedly connected to the four corners of the lower end of the treatment tank. Cooling devices are installed inside the support legs. A tailrace pipe connection groove is opened at the upper right end of the treatment tank. A tailrace inlet pipe is fixedly connected to the tailrace pipe connection groove. A slot is opened on the upper part of the inner wall of the tailrace inlet pipe. A filter device is installed in the slot.

[0006] The filtration device includes six insert rods. A coarse filter screen is fixedly connected to the upper part of the outer surface of the six insert rods. A fine filter screen is fixedly connected to the middle part of the outer surface of the six insert rods. An adsorption filter is fixedly connected to the lower part of the outer surface of the six insert rods. The insert rods are arranged in a ring array in the slot.

[0007] Preferably, the cooling device includes a condenser device, with an inlet pipe and a drain pipe fixedly connected to the upper and lower ends of the condenser device, respectively. A heat exchange coil is provided on the outer surface of the condenser device, with a heat exchange water inlet pipe fixedly connected to one end of the heat exchange coil and a heat exchange drain pipe fixedly connected to the other end of the heat exchange coil. The condenser device is fixedly installed inside the processing box.

[0008] Preferably, the coarse filter screen is located above the fine filter screen, and the centers of the coarse filter screen and the fine filter screen are on the same vertical line.

[0009] Preferably, the six insertion rods are arranged in a circular array with equal spacing in the slot, and the spacing between adjacent insertion rods is equal.

[0010] Preferably, the mesh diameter of the coarse filter screen is larger than that of the fine filter screen, and the mesh diameter of the fine filter screen is larger than that of the adsorption filter.

[0011] Preferably, one end of the heat exchange inlet pipe is located on the upper left side of the treatment chamber, and one end of the heat exchange outlet pipe is located on the lower right side of the treatment chamber.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. In this utility model, the cooling device adopts a method of coordinated operation of refrigerant circulation and cold water heat exchange. The refrigerant circulates directly in the condenser equipment for cooling, while the cold water flows in the heat exchange coil to assist in cooling. The dual effect greatly improves the cooling efficiency and can quickly reduce the tail water temperature.

[0014] 2. In this utility model, the filtration device is equipped with a coarse filter screen, a fine filter screen, and an adsorption filter, with the mesh diameter decreasing sequentially to form a graded filtration. This can more efficiently remove impurities of different particle sizes from the effluent, improve the purification effect, provide higher quality effluent for subsequent cooling processes, and ensure the stable operation of the cooling device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a tailrace cooling device for a hydropower station according to the present invention.

[0016] Figure 2 This is a partial cross-sectional structural diagram of a tailrace cooling device for a hydropower station according to the present invention;

[0017] Figure 3 This is a schematic diagram of the cooling device structure of a tailrace cooling device for a hydropower station according to the present invention;

[0018] Figure 4 This is a schematic diagram of the combined connection structure of the tailwater inlet pipe and the filter device of a tailwater cooling device for a hydropower station according to the present invention.

[0019] In the diagram: 1. Support leg; 2. Treatment tank; 3. Tailwater inlet pipe; 4. Filtration device; 5. Cooling device; 6. Slot; 7. Tailwater pipe connection slot; 51. Inlet pipe; 52. Condenser equipment; 53. Heat exchanger coil; 54. Heat exchanger inlet pipe; 55. Drain pipe; 56. Heat exchanger drain pipe; 41. Coarse filter screen; 42. Fine filter screen; 43. Adsorption filter; 44. Insertion rod. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Please see Figure 1-4 This utility model provides a technical solution:

[0024] A tailrace cooling device for a hydropower station includes a treatment tank 2. Support legs 1 are fixedly connected to the four corners of the lower end of the treatment tank 2. Cooling devices 5 are installed inside the support legs 1. A tailrace pipe connection groove 7 is opened on the upper right end of the treatment tank 2. A tailrace inlet pipe 3 is fixedly connected in the tailrace pipe connection groove 7. A slot 6 is opened on the upper part of the inner wall of the tailrace inlet pipe 3. A filter device 4 is installed in the slot 6.

[0025] In this embodiment, the filtration device 4 includes six insert rods 44. A coarse filter screen 41 is fixedly connected to the upper part of the outer surface of the six insert rods 44, a fine filter screen 42 is fixedly connected to the middle part of the outer surface of the six insert rods 44, and an adsorption filter 43 is fixedly connected to the lower part of the outer surface of the six insert rods 44. The insert rods 44 are arranged in a ring array in the slot 6. The coarse filter screen 41 is located above the fine filter screen 42, and the centers of the coarse filter screen 41 and the fine filter screen 42 are on the same vertical line. The six insert rods 44 are arranged in a ring array with equal spacing in the slot 6. The spacing between adjacent insert rods 44 is equal. The mesh diameter of the coarse filter screen 41 is larger than the mesh diameter of the fine filter screen 42, and the mesh diameter of the fine filter screen 42 is larger than the mesh diameter of the adsorption filter 43.

[0026] Through the above scheme: Wastewater flows in from the wastewater inlet pipe 3, which is connected to the treatment tank 2 via a wastewater pipe connection groove 7 and is located at the upper right end of the treatment tank 2. Before entering the treatment tank 2, the wastewater first contacts the filter device 4. The filter device 4 is installed in a slot 6 on the upper part of the inner wall of the wastewater inlet pipe 3. Six equally spaced circular rods 44 in the slot 6 fix the coarse filter screen 41, the fine filter screen 42, and the adsorption filter 43. During operation, the wastewater first encounters the uppermost coarse filter screen 41, whose mesh diameter is larger than that of the fine filter screen 42, thus intercepting larger particles and completing the initial filtration. Next, the wastewater passes through the fine filter screen 42 in the middle, further removing smaller particles. Finally, the wastewater... Water flows to the lower adsorption filter 43, which has the smallest mesh diameter, capable of adsorbing tiny particles and some harmful substances, thus purifying the effluent. In terms of filtration effect, the mesh diameters of the coarse filter disc 41, fine filter disc 42, and adsorption filter 43 decrease sequentially, forming a graded filtration system that can more efficiently remove impurities of different particle sizes from the effluent, improving the purification effect. In terms of structural stability, the six interlocking rods 44 are arranged in an equally spaced ring array within the slot 6, uniformly supporting each filter component, ensuring that the filter device 4 can work stably under the impact of water flow, and is not easily shaken or damaged, extending the service life of the device. This, in turn, ensures the stable operation of the entire effluent cooling device 5, providing higher quality effluent for subsequent cooling processes and improving overall work efficiency.

[0027] In this embodiment, the cooling device 5 includes a condenser device 52. The upper end and lower end of the condenser device 52 are respectively fixedly connected to an inlet pipe 51 and a drain pipe 55. A heat exchange coil 53 is provided on the outer surface of the condenser device 52. One end of the heat exchange coil 53 is fixedly connected to a heat exchange water inlet pipe 54, and the other end of the heat exchange coil 53 is fixedly connected to a heat exchange drain pipe 56. The condenser device 52 is fixedly installed inside the processing chamber 2. One end of the heat exchange water inlet pipe 54 is located on the upper left side of the processing chamber 2, and one end of the heat exchange drain pipe 56 is located on the lower right side of the processing chamber 2.

[0028] Through the above scheme: Inside the processing chamber 2, the cooling device 5 begins to function. The condenser 52 is fixedly installed inside the processing chamber 2, with its upper end connected to the inlet pipe 51 and its lower end connected to the outlet pipe 55. External refrigerant flows into the condenser 52 through the inlet pipe 51, completes the heat exchange process inside the device, and then flows out through the outlet pipe 55. The heat exchange coil 53 is wound around the outer surface of the condenser 52. One end of the heat exchange water inlet pipe 54 is located at the upper left side of the processing chamber 2, introducing external cold water into the heat exchange coil 53. When the cold water flows inside the heat exchange coil 53, it exchanges heat with the condenser 52, absorbing the heat it dissipates, thereby reducing the temperature of the condenser 52 and enhancing its cooling capacity. The water, after completing the heat exchange and heating up, flows out through the lower right side of the processing chamber 2. The heat exchange drain pipe 56 discharges the refrigerant, and the refrigerant circulation and cold water heat exchange work together to ensure the continuous and stable operation of the cooling device. In terms of beneficial effects, this design greatly improves cooling efficiency. On the one hand, the refrigerant circulates in the condenser equipment 52 and directly participates in refrigeration. On the other hand, the cold water flows in the heat exchange coil 53 to assist in cooling. Under the dual action, the tailwater temperature can be reduced quickly. In terms of device stability, the condenser equipment 52 is fixed in the treatment box 2, and the heat exchange inlet pipe 54 and the heat exchange drain pipe 56 are reasonably distributed on both sides of the box, so that the center of gravity of the device is stable. During operation, it is not easy to be displaced or shaken by factors such as water flow impact. This ensures that the entire tailwater cooling device 5 can operate stably for a long time and provides a reliable guarantee for the tailwater cooling work of the hydropower station.

[0029] It should be noted that this utility model is a tailrace cooling device for a hydropower station. During use, the tailrace water enters the treatment tank 2 through the tailrace water inlet pipe 3. The tailrace water inlet pipe 3 is located at the upper right end of the treatment tank 2 and is fixedly connected to the treatment tank 2 through the tailrace water pipe connecting groove 7. Before the tailrace water enters the treatment tank 2, it first passes through the filter device 4. The filter device 4 is installed in the slot 6 on the upper part of the inner wall of the tailrace water inlet pipe 3. The filter device 4 includes a coarse filter screen 41, a fine filter screen 42, and an adsorption filter 43. They are fixed by six through rods 44 arranged in a ring array in the slot 6. Filter 41, located at the top, has a larger mesh diameter than the fine filter screen 42. It first performs preliminary filtration of the effluent, intercepting larger particles. Next, the effluent flows through the fine filter screen 42, further filtering smaller particles. Finally, it reaches the adsorption filter 43, which has the smallest mesh diameter, adsorbing tiny particles and some harmful substances in the effluent, thus purifying it. The filtered effluent enters the treatment chamber 2. At this point, the cooling device 5 begins operation. The cooling device 5 is installed inside the support legs 1, which are fixed to the four lower corners of the treatment chamber 2. The cooling device 5 contains a condenser. The condenser unit 52 is fixedly installed inside the processing chamber 2. The condenser unit 52 is connected to the external system via an inlet pipe 51 and a drain pipe 55. The inlet pipe 51 is located at the upper end of the condenser unit 52, and the drain pipe 55 is located at the lower end. They penetrate the side wall of the processing chamber 2 and are fixedly connected to the condenser unit 52, with the connection sealed. When the condenser unit 52 is working, external refrigerant enters through the inlet pipe 51, undergoes heat exchange inside the condenser unit 52, and is then discharged through the drain pipe 55. Simultaneously, a heat exchange coil 53 is wound around the outer surface of the condenser unit 52. One end of the heat exchange inlet water pipe 54 is located at the upper left side of the processing chamber 2. One end of the heat exchange coil 53 is fixedly connected to the heat exchange coil 53, and external cold water is introduced into the heat exchange coil 53. During the flow of the cold water in the heat exchange coil 53, it exchanges heat with the condenser device 52, absorbs the heat emitted by the condenser device 52, thereby reducing the temperature of the condenser device 52 and improving its cooling efficiency. The water that has been heated by heat exchange is discharged through the heat exchange drain pipe 56 located at the lower right side of the treatment box 2. The heat exchange drain pipe 56 is fixedly connected to the other end of the heat exchange coil 53. Through this circulation, the tailwater is cooled, and the cooled tailwater can meet the subsequent related usage requirements.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A tailrace cooling device for a hydropower station, comprising a treatment tank (2), characterized in that: The lower four corners of the processing box (2) are fixedly connected with support feet (1), and a cooling device (5) is installed inside the support feet (1). A tailwater pipe connection groove (7) is opened on the upper right side of the processing box (2). A tailwater inlet pipe (3) is fixedly connected inside the tailwater pipe connection groove (7). A slot (6) is opened on the upper part of the inner wall of the tailwater inlet pipe (3). A filter device (4) is installed in the slot (6). The filtration device (4) includes six insert rods (44). A coarse filter screen (41) is fixedly connected to the upper part of the outer surface of the six insert rods (44). A fine filter screen (42) is fixedly connected to the middle part of the outer surface of the six insert rods (44). An adsorption filter (43) is fixedly connected to the lower part of the outer surface of the six insert rods (44). The insert rods (44) are arranged in a ring array in the slot (6).

2. The tailrace cooling device for a hydropower station according to claim 1, characterized in that: The cooling device (5) includes a condenser device (52), with an inlet pipe (51) and a drain pipe (55) fixedly connected to the upper and lower ends of the condenser device (52), respectively. A heat exchange coil (53) is provided on the outer surface of the condenser device (52), with a heat exchange water inlet pipe (54) fixedly connected to one end of the heat exchange coil (53) and a heat exchange drain pipe (56) fixedly connected to the other end of the heat exchange coil (53). The condenser device (52) is fixedly installed inside the processing box (2).

3. The tailrace cooling device for a hydropower station according to claim 1, characterized in that: The coarse filter screen (41) is located above the fine filter screen (42), and the centers of the coarse filter screen (41) and the fine filter screen (42) are on the same vertical line.

4. A tailrace cooling device for a hydropower station according to claim 1, characterized in that: The six insertion rods (44) are arranged in a ring array with equal spacing in the slot (6), and the spacing between adjacent insertion rods (44) is equal.

5. A tailrace cooling device for a hydropower station according to claim 1, characterized in that: The mesh diameter of the coarse filter disc (41) is larger than that of the fine filter disc (42), and the mesh diameter of the fine filter disc (42) is larger than that of the adsorption filter (43).

6. A tailrace cooling device for a hydropower station according to claim 2, characterized in that: One end of the heat exchange inlet pipe (54) is located on the upper left side of the treatment box (2), and one end of the heat exchange outlet pipe (56) is located on the lower right side of the treatment box (2).

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