Dry-wet combined cooling tower for auxiliary machine

Abstract

The utility model relates to the technical field of dry-wet combined cooling towers, and discloses an auxiliary machine dry-wet combined cooling tower which comprises a tower body and an air cooling assembly arranged above the tower body. The spraying assembly is arranged on the side surface of the tower body; the separation net is arranged on the inner wall of the bottom of the tower body; and the circulating cooling assembly is arranged in the tower body. According to the dry-wet combined cooling tower for the auxiliary machine, circulating cooling water of the power plant auxiliary machine is input into the circulating pipelines through the water inlet pipe, the heat exchange contact area of the circulating cooling water is effectively increased due to the fact that the three sets of circulating pipelines are arranged in the same spiral shape and are matched with fixing of the cooling fins, and the three sets of circulating pipelines enter the confluence cylinder after exchanging heat for a certain time; and through the arrangement of the spiral blades and the spiral pieces which are opposite in spiral direction, circulating cooling water entering the confluence barrel can be effectively mixed, it is guaranteed that the cooling water heat dissipation efficiency of the three sets of circulating pipelines is consistent, and the overall heat dissipation effect of the combined cooling tower is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to dry and wet combined cooling tower technical field, concretely is a kind of auxiliary machine dry and wet combined cooling tower. BACKGROUND

[0002] Power plant auxiliary machine refers to the various auxiliary equipment that support power plant main equipment operation and ensure that power generation system is efficient, safe operation, including coal mill, coal feeder, slag remover, dust collector and so on, and these power plant auxiliary machines generally need long time work, and a large amount of heat is generated when working, and the heat dissipation of power plant auxiliary machine is generally circulated by circulating cooling water or heat conducting fluid, by the cooperation of fan and cooling water, so dry and wet combined cooling tower is needed to carry out centralized heat dissipation cooling work.

[0003] At present, when the existing dry and wet combined cooling tower carries out heat dissipation work, cooling water carries out heat exchange with air flowing in the combined cooling tower by using the heat dissipation fins outside the circulating pipeline, but the flow contact area of simple circulating pipeline in the combined cooling tower is limited, and the cooling efficiency of circulating cooling water by flowing air is limited, which will affect the working state of power plant auxiliary machine.

[0004] The above content is only used to assist understanding the technical scheme of the utility model, and does not represent that the above content is the closest prior art. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of auxiliary machine dry and wet combined cooling tower, to solve the problems raised in the above background, to achieve the above purpose, the utility model provides the following technical scheme: a kind of auxiliary machine dry and wet combined cooling tower, including tower body, still include:

[0006] Air cooling component is arranged at the top of tower body, for the air cooling of cooling water entering tower body;

[0007] Spraying component is arranged on the side of tower body, for the spraying cooling of cooling water pipeline flowing in tower body;

[0008] Partition net is arranged on the bottom inner wall of tower body, for the filtration of air impurities entering tower body and the falling of spraying water;

[0009] Circulating cooling component is arranged in the inside of tower body, for the circulating heat dissipation of cooling water of auxiliary machine cooling;

[0010] Among them, the circulating cooling component includes:

[0011] Water inlet pipe is arranged on the top side wall of tower body, for the introduction of cooling water of auxiliary machine circulation into the inside of tower body;

[0012] An outlet pipe is arranged on the bottom sidewall of the tower body, and is used to guide the circulating cooling water into the tower body to the heat dissipation area outside the auxiliary machine;

[0013] Three groups of circulating pipes are arranged in the internal cavity of the tower body, and are used to connect the inlet pipe and the outlet pipe and exchange heat with the air inside the tower body;

[0014] A heat dissipation fin is arranged on the outside of the circulating pipe, and is used to increase the contact area between the circulating pipe and the heat dissipation air;

[0015] A flow collecting barrel is arranged at the gap of the circulating pipe, and is used to mix the cooling water in the three groups of circulating pipes.

[0016] Preferably, the flow collecting barrel comprises:

[0017] A flow collecting cavity is arranged in the internal cavity of the flow collecting barrel, and is used to mix and re-distribute the cooling water flowing in the three groups of circulating pipes;

[0018] Three groups of rotating rings are rotatably installed on the inner surface of the flow collecting cavity, and are used to improve the mixing efficiency of the cooling water in the flow collecting cavity;

[0019] A guide rod is fixedly installed on the end inner surface of the flow collecting cavity, and is used to promote the mixing effect of the cooling water in the flow collecting cavity.

[0020] Preferably, the rotating ring comprises:

[0021] A connecting ring is fixedly installed on the arc outer surface of the rotating ring, and the rotating ring is rotatably installed on the inner surface of the flow collecting cavity through the connecting ring;

[0022] A spiral blade is fixedly installed on the arc inner surface of the rotating ring in a spiral shape, and is used to promote the mixing efficiency of the cooling water in the flow collecting cavity.

[0023] Preferably, the guide rod comprises:

[0024] A tapered block is fixedly installed between the end of the flow collecting cavity and the end of the guide rod;

[0025] A spiral fin is fixedly installed on the arc outer surface of the guide rod, and the spiral fin is arranged in a spiral shape, and comprises a large-diameter end and a small-diameter end, and the large-diameter end is arranged close to one end of the tapered block.

[0026] Preferably, the spiral directions of the spiral fin and the spiral blade are opposite.

[0027] Preferably, the air cooling assembly comprises:

[0028] A fan box is fixedly installed on the top outer wall of the tower body;

[0029] A driving motor is fixedly installed on the top outer surface of the fan box;

[0030] A rotating rod is fixedly installed on the output end of the driving motor through a shaft coupling;

[0031] An arc-shaped air disc is fixedly installed on the arc-shaped outer wall of the rotating rod, and the lower surface of the arc-shaped air disc is provided with an arc-shaped cavity which is wide at the bottom and narrow at the top;

[0032] Three groups of arc-shaped air plates are fixedly installed on the arc-shaped outer surface of the rotating rod in a circumferential array.

[0033] Preferably, the spraying assembly comprises:

[0034] A water pump is fixedly installed on the outer wall of the bottom side of the tower body, and is used to be in through connection with the external spraying water tank;

[0035] A communication pipe is fixedly installed on the side wall of the tower body;

[0036] A connecting pipe is fixedly installed between the bottom end surface of the communication pipe and the output end of the water pump, and is used to pass the spraying water pumped out by the water pump into the communication pipe;

[0037] A spraying pipe is fixedly installed on the outer wall of the side of the communication pipe close to the tower body;

[0038] A plurality of groups of spraying heads are fixedly installed on the outer wall of the side of the spraying pipe close to the tower body, and the plurality of groups of spraying heads are arranged at the gaps of the circulating pipes.

[0039] Compared with the prior art, the utility model has the beneficial effects that:

[0040] The circulating cooling water of the auxiliary machine of the power plant is input into the circulating pipes through the water inlet pipe, the heat exchange contact area of the circulating cooling water is effectively increased due to the three groups of circulating pipes arranged in the same spiral shape and the fixing of the radiating fins, the circulating cooling water in the collecting cylinder can be effectively mixed after the three groups of circulating pipes enter the collecting cylinder after a certain time of heat exchange, the cooling water heat dissipation efficiency of the three groups of circulating pipes is consistent, and the problem of insufficient overall heat dissipation efficiency of the combined cooling tower is solved. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 It is a schematic view of the main structure of the utility model;

[0042] Figure 2 It is a schematic view of the sectional structure of the utility model;

[0043] Figure 3 It is a schematic view of the circulating pipe structure of the utility model;

[0044] Figure 4 It is a schematic view of the spraying assembly structure of the utility model;

[0045] Figure 5 This is a cross-sectional view of the manifold structure of this utility model;

[0046] Figure 6 This is a partial three-dimensional structural diagram of the turbulence ring of this utility model.

[0047] Figure Descriptions: 1-Tower body; 2-Air-cooled assembly; 21-Fan box; 22-Drive motor; 23-Rotor; 24-Arc-shaped fan disc; 25-Arc-shaped fan plate; 3-Spray assembly; 31-Water pump; 32-Connecting pipe; 33-Connecting pipe; 34-Spray pipe; 35-Spray head; 4-Separation net; 5-Circulating cooling assembly; 51-Inlet pipe; 52-Circulating pipe; 53-Outlet pipe; 54-Heat sink; 55-Manifold; 551-Manifold cavity; 552-Rotor ring; 5521-Connecting ring; 5522-Spiral blade; 553-Guide rod; 5531-Conical block; 5532-Spiral blade. Detailed Implementation

[0048] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0049] Please see Figures 1-6 This utility model provides a technical solution: an auxiliary machine dry and wet combined cooling tower, including a tower body 1, and further including:

[0050] The air-cooled component 2 is located above the tower body 1 and is used to cool the cooling water entering the tower body 1. An air inlet is provided on the bottom side of the tower body 1 so that air from the external environment can enter the internal cavity of the tower body 1 through the air inlet when the air-cooled component 2 is started.

[0051] The spray assembly 3 is located on the side of the tower body 1 and is used to spray and cool the cooling water pipes flowing through the tower body 1.

[0052] The separator 4 is installed on the bottom inner wall of the tower body 1 to filter impurities in the air entering the tower body 1 and to facilitate the fall of spray water.

[0053] The circulating cooling component 5 is located inside the tower body 1 and is used to circulate and dissipate heat from the cooling water used to cool the auxiliary equipment.

[0054] The circulating cooling component 5 includes:

[0055] Water inlet pipe 51 is installed on the top side wall of tower body 1 and is used to introduce circulating cooling water of auxiliary machine into the interior of tower body 1. The end of water inlet pipe 51 is connected to the pipeline of the circulating cooling system of electric field auxiliary machine during use.

[0056] The outlet pipe 53 is located on the bottom side wall of the tower body 1 and is used to export the circulating cooling water that enters the tower body 1 and send it back to the heat dissipation area outside the auxiliary machine. The end of the outlet pipe 53 is connected to the pipe of the circulating cooling system of the motor auxiliary machine during use.

[0057] Three sets of circulating pipes 52 are installed in the internal cavity of the tower body 1 to connect the water inlet pipe 51 and the water outlet pipe 53 and exchange heat with the air inside the tower body 1. The spiral shape of the three sets of circulating pipes 52 is consistent, and there is a certain gap between the three sets of circulating pipes 52, so that the circulating pipes 52 can have sufficient contact area to achieve heat exchange and improve the heat dissipation effect of the cooling water.

[0058] Heat sink 54 is disposed on the outside of circulation pipe 52 to increase the contact area between circulation pipe 52 and heat dissipation air. Several sets of heat sink 54 are provided, and the sets of heat sink 54 are evenly distributed on the outer surface of circulation pipe 52, thereby further improving the heat dissipation effect of circulation pipe 52 in the inner cavity of tower body 1.

[0059] The manifold 55 is installed in the gap of the circulation pipe 52 to mix the cooling water in the three sets of circulation pipes 52. There are two sets of manifolds 55, which are installed in the circulation pipes 52 to connect the circulation pipes 52.

[0060] Manifold 55 includes:

[0061] The manifold 551 is located inside the manifold 55. It mixes and redistributes the cooling water flowing in the three sets of circulation pipes 52 to dissipate heat. The manifold 551 is cylindrical and is connected to the interior of the three sets of circulation pipes 52, so that the cooling water in the three sets of circulation pipes 52 can flow into the manifold 551 and finally return to the three sets of circulation pipes 52 through the end opening of the manifold 551.

[0062] Three sets of rotating rings 552 are rotatably mounted on the inner surface of the manifold 551 to improve the mixing efficiency of cooling water entering the manifold 551. The three sets of rotating rings 552 are equally spaced in the manifold 551.

[0063] The guide rod 553 is fixedly installed on the inner surface of the end of the manifold 551 to promote the mixing effect of cooling water in the manifold 551. At the same time, the guide rod 553 is set at the axis of the rotating ring 552.

[0064] Rotary ring 552 includes:

[0065] The connecting ring 5521 is fixedly installed on the arc-shaped outer surface of the rotating ring 552, and the rotating ring 552 is rotatably installed on the inner surface of the manifold 551 through the connecting ring 5521;

[0066] Spiral blades 5522 are fixedly installed in a spiral shape on the arc-shaped inner surface of the rotating ring 552 to promote the mixing efficiency of cooling water entering the manifold 551. Multiple sets of spiral blades 5522 are provided, and the multiple sets of spiral blades 5522 are arranged in a spiral linear array on the arc-shaped inner surface of the rotating ring 552, thereby generating a rotating flow state for the cooling water flowing through the internal cavity of the rotating ring 552, prolonging the flow time of the cooling water in the manifold 551, and facilitating its mixing.

[0067] Guide rod 553 includes:

[0068] A conical block 5531 is fixedly installed between the end of the manifold 551 and the end of the guide rod 553;

[0069] The spiral blade 5532 is fixedly installed on the arc-shaped outer surface of the guide rod 553. The spiral blade 5532 is spirally arranged and includes a large diameter end and a small diameter end. The large diameter end is located near the end of the conical block 5531.

[0070] The spiral blade 5532 and the spiral vane 5522 are arranged in opposite spiral directions, so that the spiral blade 5532 can cooperate with the spiral vane 5522 to effectively mix the cooling water in the manifold 551, so that the temperature is balanced and the large temperature difference of the cooling water in the three sets of circulation pipes 52 is avoided.

[0071] Air-cooled component 2 includes:

[0072] The fan box 21 is fixedly installed on the top outer wall of the tower body 1. The center of the fan box 21 is open and a fan is installed inside the fan box 21 so that the heat exchange air in the cavity inside the tower body 1 can be discharged upward to the external environment.

[0073] The drive motor 22 is fixedly installed on the top outer surface of the fan box 21 to provide power to the rotating rod 23;

[0074] The rotating rod 23 is fixedly installed at the output end of the drive motor 22 via a coupling. The rotating rod 23 is coaxially arranged with the fan installed in the fan box 21. When the fan rotates, it drives the rotating rod 23 to rotate synchronously.

[0075] The arc-shaped fan plate 24 is fixedly installed on the arc-shaped outer wall of the rotating rod 23. The lower surface of the arc-shaped fan plate 24 has an arc-shaped cavity that is wider at the bottom and narrower at the top. When an airflow is generated inside the tower body 1 from bottom to top, the rising airflow tends to move towards the inner surface of the tower body 1 due to the influence of the arc-shaped cavity during the flow process. This allows the heat exchange gas to fully contact and exchange heat with the circulation pipe 52 that is attached to the inner surface of the tower body 1, ensuring the cooling effect of the device on the circulating cooling water.

[0076] Three sets of arc-shaped air vanes 25 are fixedly installed in a circular array on the arc-shaped outer surface of the rotating rod 23, which further generates airflow force in the horizontal direction from the center of the tower body 1 to the inner surface of the tower body 1, so that the heat exchange air can fully contact and exchange heat with the circulation pipe 52.

[0077] Spray assembly 3 includes:

[0078] Water pump 31 is fixedly installed on the outer wall of the bottom side of the tower body 1 for connection with the external spray water tank.

[0079] The connecting pipe 32 is fixedly installed on the side wall of the tower body 1;

[0080] The connecting pipe 33 is fixedly installed between the bottom end of the connecting pipe 32 and the output end of the water pump 31, and is used to pass the spray water pumped out by the water pump 31 into the connecting pipe 32.

[0081] The spray pipe 34 is fixedly installed on the outer wall of the connecting pipe 32 near the tower body 1. There are multiple sets of spray pipes 34, and the multiple sets of spray pipes 34 are evenly distributed in a vertical linear array on the inner wall of the tower body 1. When the spray assembly 3 is started, it can spray the surface of the circulation pipe 52 set inside the tower body 1, thereby accelerating the heat dissipation of the cooling water in the circulation pipe 52 through the evaporation of the spray water.

[0082] Multiple sets of nozzles 35 are fixedly installed on the outer wall of the spray pipe 34 near the tower body 1, and multiple sets of nozzles 35 are set in the gaps of the circulation pipe 52.

[0083] Working principle: By connecting the inlet pipe 51 and outlet pipe 53 to the circulating cooling system of the power plant auxiliary equipment, the cooling water of the circulating cooling system is delivered by the circulating pump and enters the interior of the tower body 1 through the inlet pipe 51 when the auxiliary equipment is in operation. At this time, the air-cooling component 2 is started, and the fan of the fan box 21 generates an upward airflow inside the tower body 1. Since the outside air is relatively cool, it enters the internal cavity of the tower body 1 through the air inlet set at the bottom of the tower body 1 and moves upward under the guidance of the fan. The relatively cool air comes into contact with the circulating pipe 52 and the heat sink 54 to remove heat. The system generates water to cool the cooling water inside the circulating pipe 52. At the same time, the water pump 31 of the spray assembly 3 is started to transport the spray water in the external spray water tank to the spray pipe 34 through the connecting pipe 33 and the connecting pipe 32. The spray water is then sprayed into the tower body 1 through the nozzle 35. The evaporation of the spray water accelerates the heat dissipation of the cooling water in the circulating pipe 52. Finally, the cooling water in the circulating pipe 52 is discharged from the outlet pipe 53 after cooling down and flows back to the circulating cooling system of the power plant auxiliary equipment to achieve circulating cooling of the power plant auxiliary equipment during operation and ensure the normal working efficiency of the power plant auxiliary equipment.

Claims

1. An auxiliary machine dry-wet combined cooling tower, comprising a tower body (1), characterized in that: Also includes: The air-cooled component (2) is located above the tower body (1) and is used to cool the cooling water entering the tower body (1) by air cooling. The spray assembly (3) is located on the side of the tower body (1) and is used to spray and cool the cooling water pipes flowing through the tower body (1). A separator (4) is installed on the bottom inner wall of the tower body (1) to filter impurities in the air entering the tower body (1) and to allow spray water to fall. The circulating cooling component (5) is located inside the tower body (1) and is used to circulate and dissipate heat from the cooling water used to cool the auxiliary equipment. The circulating cooling assembly (5) includes: Water inlet pipe (51) is installed on the top side wall of the tower body (1) and is used to introduce the circulating cooling water of the auxiliary machine into the tower body (1); The outlet pipe (53) is installed on the bottom side wall of the tower body (1) to discharge the circulating cooling water that enters the tower body (1) and send it back to the heat dissipation area outside the auxiliary machine. Three sets of circulating pipes (52) are installed in the internal cavity of the tower body (1) to connect the water inlet pipe (51) and the water outlet pipe (53) and exchange heat with the air inside the tower body (1); Heat sink (54) is provided on the outside of the circulation pipe (52) to increase the contact area between the circulation pipe (52) and the heat dissipation air; The manifold (55) is located in the gap of the circulation pipe (52) and is used to combine and mix the cooling water in the three sets of circulation pipes (52).

2. The auxiliary dry-wet combined cooling tower according to claim 1, characterized in that: The manifold (55) includes: The manifold (551) is located inside the manifold (55) and mixes and redistributes the cooling water flowing in the three sets of circulating pipes (52) to dissipate heat. Three sets of rotating rings (552) are rotatably mounted on the inner surface of the manifold (551) to improve the mixing efficiency of cooling water entering the manifold (551); The guide rod (553) is fixedly installed on the inner surface of the end of the manifold (551) to promote the mixing effect of cooling water in the manifold (551).

3. The auxiliary machine dry-wet combined cooling tower according to claim 2, characterized in that: The rotating ring (552) includes: A connecting ring (5521) is fixedly installed on the arc-shaped outer surface of the rotating ring (552), and the rotating ring (552) is rotatably installed on the inner surface of the manifold (551) through the connecting ring (5521); The spiral blade (5522) is fixedly mounted in a spiral shape on the arc-shaped inner surface of the rotating ring (552) to promote the mixing efficiency of the cooling water entering the manifold (551).

4. The auxiliary dry-wet combined cooling tower according to claim 3, characterized in that: The guide rod (553) includes: A conical block (5531) is fixedly installed between the end of the manifold (551) and the end of the guide rod (553); A spiral blade (5532) is fixedly installed on the arc-shaped outer surface of the guide rod (553). The spiral blade (5532) is spirally arranged and includes a large-diameter end and a small-diameter end. The large-diameter end is located near the end of the conical block (5531).

5. The auxiliary machine dry-wet combined cooling tower according to claim 4, characterized in that: The spiral blade (5532) and the spiral vane (5522) are arranged in opposite spiral directions.

6. The auxiliary machine dry-wet combined cooling tower according to claim 1, characterized in that: The air-cooled component (2) includes: The fan box (21) is fixedly installed on the top outer wall of the tower body (1); The drive motor (22) is fixedly installed on the top outer surface of the fan box (21); The rotating rod (23) is fixedly installed at the output end of the drive motor (22) via a coupling; The arc-shaped fan plate (24) is fixedly installed on the arc-shaped outer wall of the rotating rod (23), and the lower surface of the arc-shaped fan plate (24) is provided with an arc-shaped cavity that is wider at the bottom and narrower at the top; Three sets of arc-shaped wind vanes (25) are fixedly installed in a circular array on the arc-shaped outer surface of the rotating rod (23).

7. The auxiliary machine dry-wet combined cooling tower according to claim 1, characterized in that: The spray assembly (3) includes: A water pump (31) is fixedly installed on the outer wall of the bottom side of the tower body (1) for connection with the external spray water tank. The connecting pipe (32) is fixedly installed on the side wall of the tower body (1); The connecting pipe (33) is fixedly installed between the bottom end of the connecting pipe (32) and the output end of the water pump (31) to pass the spray water pumped out by the water pump (31) into the connecting pipe (32); The spray pipe (34) is fixedly installed on the outer wall of the connecting pipe (32) near the tower body (1); Multiple sets of nozzles (35) are fixedly installed on the outer wall of the spray pipe (34) near the tower body (1), and multiple sets of nozzles (35) are set in the gaps of the circulation pipe (52).

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