Combined dry and wet closed cooling tower

Abstract

The utility model discloses a kind of dry-wet combined closed cooling towers, including tower body, the inside two sides of the tower body are symmetrically provided with wet heat exchange component, the side of each wet heat exchange component is provided with fan, the fan is installed in the top of the tower body, the wet heat exchange component includes heat exchange mechanism, second heat inlet pipe, second cold outlet pipe, water pump, water tank, water pipe and spraying mechanism, the upper and lower ends of the heat exchange mechanism are respectively provided with second heat inlet pipe and second cold outlet pipe, the water tank is arranged at the bottom of tower body, one end of the water pump is communicated with the inside of water tank by pipeline, and the other end is connected with spraying mechanism by water pipe, the spraying mechanism is arranged directly above heat exchange mechanism, the present dry-wet combined closed cooling tower is used in cooperation with dry heat exchange component and wet heat exchange component, to achieve the purpose of water saving, reduce the operation cost of cooling tower.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange technology, specifically a dry-wet combined closed cooling tower. Background Technology

[0002] Traditional closed-circuit cooling towers mainly exchange heat through wet heat exchange components, that is, by spraying heat to exchange with the high-temperature heat exchange medium in the heat exchange mechanism, thereby reducing the temperature of the high-temperature heat exchange medium.

[0003] To ensure the heat exchange effect, a large amount of water needs to be continuously sprayed onto the heat exchange mechanism, resulting in high water consumption and increased heat exchange costs. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a dry-wet combined closed cooling tower. By using dry heat exchange components and wet heat exchange components in combination, water saving is achieved and the operating cost of the cooling tower is reduced, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dry-wet combined closed cooling tower, comprising a tower body, with wet heat exchange components symmetrically arranged on both sides of the interior of the tower body. Each wet heat exchange component has a fan on one side, and the fans are installed at the top of the tower body. Each wet heat exchange component includes a heat exchange mechanism, a second heat inlet pipe, a second cold outlet pipe, a water pump, a water tank, a water supply pipe, and a spraying mechanism. The upper and lower ends of the heat exchange mechanism are respectively provided with a second heat inlet pipe and a second cold outlet pipe. The water tank is located at the bottom of the tower body. One end of the water pump is connected to the interior of the water tank through a pipeline, and the other end is connected to the spraying mechanism through the water supply pipe. The spraying mechanism is located directly above the heat exchange mechanism. Dry heat exchange components are symmetrically installed at the top of the tower body, with each dry heat exchange component located directly above the wet heat exchange component.

[0006] The dry heat exchange assembly includes a plate heat exchanger, a first heat inlet pipe and a first cold outlet pipe. The first heat inlet pipe and the first cold outlet pipe are respectively disposed at the upper and lower ends of the plate heat exchanger. The first cold outlet pipe is connected to the second heat inlet pipe through a connecting pipe.

[0007] The outer side of the tower body is provided with a first air inlet, which is located directly below the heat exchange mechanism. The top of the tower body is provided with a second air inlet, which corresponds to the position of the plate heat exchanger.

[0008] As a preferred embodiment of this utility model, the number of plate heat exchangers is two, and the two plate heat exchangers are installed in an inverted V shape at the upper end of the tower body.

[0009] As a preferred embodiment of this utility model, one end of the first heat inlet pipe is connected to the distribution box, and the distribution box is connected to the inlet ends of two plate heat exchangers through pipelines, and the outlet ends of the two plate heat exchangers are both connected to the first cold outlet pipe.

[0010] As a preferred embodiment of the present invention, the spraying mechanism includes a spray pipe and spray heads. The spray pipe is located directly above the heat exchange mechanism, and the spray heads are evenly distributed along the length of the spray pipe.

[0011] In a preferred embodiment of this invention, the connecting pipe is connected to both the first cold outlet pipe and the second heat inlet pipe via flanges.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This dry-wet combined closed cooling tower has a reasonable design and ingenious concept. By setting a dry heat exchange component at the upper end of the tower body, in summer, air cooling is used to perform preliminary heat exchange on the high-temperature heat exchange medium, and then secondary heat exchange is performed through the wet heat exchange component. This can improve heat exchange efficiency and save a certain amount of spray water. In winter, the wet heat exchange component does not work, and only the dry heat exchange component works. There is no need for spray water to participate in heat exchange, saving a lot of water resources and greatly reducing heat exchange costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] In the diagram: 1 Tower body, 2 Wet heat exchanger assembly, 21 Heat exchange mechanism, 22 Second heat inlet pipe, 23 Second cold outlet pipe, 24 Water pump, 25 Water tank, 26 Water supply pipe, 27 Spraying mechanism, 271 Spray pipe, 272 Spray head, 3 Fan, 4 Dry heat exchanger assembly, 41 Plate heat exchanger, 42 Distribution box, 43 First heat inlet pipe, 44 First cold outlet pipe, 5 Connecting pipe, 6 First air inlet. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments (for ease of description and understanding, hereinafter referred to as...). Figure 1 (The above is described above). Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] Please see Figure 1This utility model provides a technical solution: a combined wet and dry closed cooling tower, including a tower body 1. Wet heat exchange components 2 are symmetrically arranged on both sides of the interior of the tower body 1. A fan 3 is installed on one side of each wet heat exchange component 2. The fan 3 is installed on the top of the tower body 1. The wet heat exchange component 2 includes a heat exchange mechanism 21, a second heat inlet pipe 22, a second cold outlet pipe 23, a water pump 24, a water tank 25, a water supply pipe 26, and a spray mechanism 27. The upper and lower ends of the heat exchange mechanism 21 are respectively provided with second heat inlet pipes 22. 2. The second cooling pipe 23, the heat exchange mechanism 21 is a commonly used coil heat exchanger, the water tank 25 is set at the bottom of the tower body 1, one end of the water pump 24 is connected to the inside of the water tank 25 through the pipeline, and the other end is connected to the spray mechanism 27 through the water supply pipe 26. The spray mechanism 27 is set directly above the heat exchange mechanism 21. The spray mechanism 27 includes a spray pipe 271 and a spray head 272. The spray pipe 271 is located directly above the heat exchange mechanism 21, and the spray head 272 is evenly distributed along the length of the spray pipe 271.

[0017] In order to further improve heat exchange efficiency and achieve water saving, dry heat exchange components 4 are symmetrically installed on the top of the tower body 1, with each dry heat exchange component 4 located directly above the wet heat exchange component 2.

[0018] The dry heat exchange assembly 4 includes a plate heat exchanger 41, a first heat inlet pipe 43, and a first cold outlet pipe 44. The first heat inlet pipe 43 and the first cold outlet pipe 44 are respectively located at the upper and lower ends of the plate heat exchanger 41. The first cold outlet pipe 44 is connected to the second heat inlet pipe 22 through a connecting pipe 5. A first air inlet 6 is provided on the outer side of the tower body 1, located directly below the heat exchange mechanism 21. A second air inlet is provided on the top of the tower body 1, corresponding to the position of the plate heat exchanger 41. The internal cavities of the tower body 1 are interconnected. The high-temperature heat exchange medium enters the plate heat exchanger 41 through the first heat inlet pipe 43. Under the action of the second air inlet, the air is accelerated into the air and comes into contact with the plate heat exchanger 41, thereby exchanging heat with the high-temperature heat exchange medium. The high-temperature heat exchange medium after the initial heat exchange enters the wet heat exchange assembly 2 through the first cold outlet pipe 44 and the connecting pipe 5. The cooling water in the water tank 25 is drawn out by the water pump 24 and then enters the spray pipe 271 through the water inlet pipe 26. The cooling water is sprayed onto the heat exchange mechanism 21 through the spray head 272, thereby exchanging heat with the high-temperature heat exchange medium in the heat exchange mechanism 21 for a second time, thereby improving the heat exchange efficiency. The high-temperature heat exchange medium after the second heat exchange is discharged from the second cold outlet pipe 23.

[0019] In order to improve the initial heat exchange effect between the dry heat exchange component 4 and the high-temperature heat exchange medium, there are two plate heat exchangers 41, which are installed in an inverted V shape at the upper end of the tower body 1.

[0020] One end of the first heat inlet pipe 43 is connected to the distribution box 42. The distribution box 42 is connected to the inlet ends of the two plate heat exchangers 41 through pipes. The outlet ends of the two plate heat exchangers 41 are connected to the first cold outlet pipe 44.

[0021] To ensure the sealing effect of the high-temperature heat exchange medium, the connecting pipe 5 is connected to the first cold outlet pipe 44 and the second heat inlet pipe 22 through flanges.

[0022] In spring, summer and autumn, when the air temperature is not too low, the dry heat exchanger 4 and the wet heat exchanger 2 operate simultaneously to ensure the heat exchange effect.

[0023] In winter, due to the low air temperature, the high-temperature heat exchange medium only passes through the dry heat exchange component 4 and exchanges heat with the dry heat exchange component 4 through the cold air to ensure the heat exchange effect. The wet heat exchange component 2 does not need to work. The heat exchange medium is finally discharged from the second cold pipe 23. In this process, since the spray water does not participate in the heat exchange, a lot of water resources are saved and the heat exchange cost is reduced.

[0024] The parts of the utility model not described in detail are prior art. Although embodiments of the utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the utility model. The scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A combined wet and dry closed-loop cooling tower, comprising a tower body (1), wherein wet heat exchange components (2) are symmetrically arranged on both sides of the interior of the tower body (1), and a fan (3) is provided on one side of each wet heat exchange component (2), the fan (3) being installed at the top of the tower body (1), the wet heat exchange component (2) comprising a heat exchange mechanism (21), a second heat inlet pipe (22), a second cold outlet pipe (23), a water pump (24), a water tank (25), a water supply pipe (26), and a spraying mechanism (27), wherein the upper and lower ends of the heat exchange mechanism (21) are respectively provided with a second heat inlet pipe (22) and a second cold outlet pipe (23), the water tank (25) is located at the bottom of the tower body (1), one end of the water pump (24) is connected to the interior of the water tank (25) through a pipeline, and the other end is connected to the spraying mechanism (27) through the water supply pipe (26), the spraying mechanism (27) being located directly above the heat exchange mechanism (21), characterized in that: Dry heat exchange components (4) are symmetrically installed on the top of the tower body (1), and each dry heat exchange component (4) is located directly above the wet heat exchange component (2). The dry heat exchange assembly (4) includes a plate heat exchanger (41), a first heat inlet pipe (43) and a first cold outlet pipe (44). The first heat inlet pipe (43) and the first cold outlet pipe (44) are respectively disposed at the upper and lower ends of the plate heat exchanger (41). The first cold outlet pipe (44) is connected to the second heat inlet pipe (22) through a connecting pipe (5). The outer side of the tower body (1) is provided with a first air inlet (6), which is located directly below the heat exchange mechanism (21). The top of the tower body (1) is provided with a second air inlet, which corresponds to the position of the plate heat exchanger (41).

2. The combined wet and dry closed-loop cooling tower according to claim 1, characterized in that: The number of plate heat exchangers (41) is two, and the two plate heat exchangers (41) are installed in an inverted V shape at the upper end of the tower body (1).

3. A combined wet and dry closed-loop cooling tower according to claim 2, characterized in that: One end of the first heat inlet pipe (43) is connected to the distribution box (42), and the distribution box (42) is connected to the inlet end of the two plate heat exchangers (41) through pipelines. The outlet end of the two plate heat exchangers (41) is connected to the first cold outlet pipe (44).

4. A combined wet and dry closed-loop cooling tower according to claim 1, characterized in that: The spraying mechanism (27) includes a spray pipe (271) and spray heads (272). The spray pipe (271) is located directly above the heat exchange mechanism (21), and the spray heads (272) are evenly distributed along the length of the spray pipe (271).

5. A combined wet and dry closed-loop cooling tower according to claim 1, characterized in that: The connecting pipe (5) is connected to the first cold outlet pipe (44) and the second heat inlet pipe (22) via flanges.

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