A cooling tower waste heat recovery auxiliary structure

Abstract

This utility model provides an auxiliary structure for waste heat recovery in cooling towers, relating to the technical field of waste heat recovery auxiliary devices for cooling towers. It aims to solve the problem that existing cooling towers lack waste heat recovery auxiliary structures, resulting in some heat not being recovered and reused after heat exchange, which does not meet energy conservation and emission reduction requirements. The structure includes a tower body with an open top and a support frame at the opening. A motor is mounted on the support frame, and a rotatable fan blade is mounted at the motor's output end. A spray pipe is installed below the fan blade within the tower body, with nozzles evenly distributed at the bottom. High-temperature industrial wastewater is transported through an auxiliary pipeline in the spray pipe. A condensation layer is located below the spray pipe, and an air inlet is installed below the condensation layer on the left side of the tower body. A discharge pipe is installed at the bottom of the tower body.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary devices for waste heat recovery of cooling towers, and in particular to an auxiliary structure for waste heat recovery of cooling towers. Background Technology

[0002] Cooling towers are widely used heat exchange equipment in the industrial and construction fields. Their core function is to discharge waste heat generated in industrial production or air conditioning systems into the atmosphere through direct or indirect contact between water and air, thereby reducing the temperature of circulating water and achieving efficient heat transfer and stable system operation.

[0003] Existing cooling towers do not have auxiliary structures for waste heat recovery. After heat exchange, some heat is not recovered and reused, which does not meet the requirements of energy conservation and emission reduction. Therefore, it is particularly important to design an auxiliary structure for waste heat recovery in cooling towers to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that existing cooling towers do not have an auxiliary structure for waste heat recovery, resulting in some heat not being recovered and reused after heat exchange, which does not meet the requirements for energy conservation and emission reduction. Therefore, this utility model proposes an auxiliary structure for waste heat recovery in cooling towers.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an auxiliary structure for waste heat recovery in a cooling tower, comprising a tower body, the top of which is an open structure, a support installed at the opening, a motor installed on the support, a rotatable fan blade installed at the output end of the motor, a spray pipe installed below the fan blade in the tower body, spray nozzles evenly distributed at the bottom of the spray pipe, high-temperature industrial wastewater being transported through an auxiliary pipeline in the spray pipe, a condensation layer being provided below the spray pipe, an air inlet installed below the condensation layer on the left side of the tower body, a discharge pipe installed at the bottom of the tower body, a shut-off valve installed on the discharge pipe, and a connecting pipe installed on the right side of the tower body, the connecting pipe transporting low-temperature water.

[0006] Preferably, a heat exchange tube is installed between the fan blade and the spray pipe. The heat exchange tube is made of a heat-conducting material. An interface pipe is installed at the left end of the heat exchange tube. A rectangular plate is installed on the left side of the tower body, and a water tank is installed on the rectangular plate.

[0007] Preferably, a pump station is installed on the right side of the water tank. The pump station is detachably connected to the interface pipe via an auxiliary pipe. The pump station is connected to the water tank via a suction pipe. The pump station delivers the low-temperature water from the water tank to the heat exchange pipe.

[0008] Preferably, the top of the water tank is equipped with a removable cover.

[0009] Preferably, the heat exchange tubes are distributed in an S-shaped pipe structure within the tower body.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, during use, high-temperature industrial wastewater sprayed through the spray pipe exchanges heat with cold air entering through the air inlet. Simultaneously, heat exchange tubes are used to exchange some of the heat in the high-temperature water vapor with the low-temperature water, effectively recovering the waste heat during the heat exchange process of the cooling tower. Compared with existing cooling towers that do not have a waste heat recovery auxiliary structure, some heat is not recovered and reused after the heat exchange, which does not meet the problem of energy conservation and emission reduction. The technical solution adopted by this utility model can effectively improve energy utilization efficiency and also help reduce environmental pollution, achieving a dual improvement in economic and environmental benefits. It solves the problem that existing cooling towers do not have a waste heat recovery auxiliary structure, and some heat is not recovered and reused after the heat exchange, which does not meet the problem of energy conservation and emission reduction.

[0011] 2. In this utility model, the S-shaped pipe structure of the heat exchange tube increases the contact area for heat exchange, thereby improving heat exchange efficiency. Simultaneously, the removable cover facilitates maintenance and cleaning of the water tank, ensuring its internal cleanliness and preventing any impact on heat exchange performance. Attached Figure Description

[0012] Figure 1 This is an overall view of the auxiliary structure for waste heat recovery in the cooling tower of this utility model; Figure 2 This is a partial top view of the heat exchange tube in the auxiliary structure for waste heat recovery of the cooling tower of this utility model; Legend: 1. Tower body; 101. Support; 102. Motor; 103. Fan blade; 2. Spray pipe; 201. Nozzle; 3. Condensation layer; 4. Air inlet; 5. Discharge pipe; 501. Shut-off valve; 502. Connecting pipe; 6. Heat exchange pipe; 601. Interface pipe; 602. Rectangular plate; 603. Water tank; 604. Pump station; 605. Auxiliary pipe; 606. Extraction pipe; 607. Cover plate. Detailed Implementation

[0013] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0014] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0015] This utility model provides an auxiliary structure for waste heat recovery in a cooling tower, including a tower body 1. The top of the tower body 1 is open, and a support 101 is installed at the opening. A motor 102 is installed on the support 101, and a rotatable fan blade 103 is installed at the output end of the motor 102. A spray pipe 2 is installed below the fan blade 103 in the tower body 1. Spray nozzles 201 are evenly distributed at the bottom of the spray pipe 2. High-temperature industrial wastewater is transported through an auxiliary pipe 605 in the spray pipe 2. A condensation layer 3 is arranged below the spray pipe 2. An air inlet 4 is installed below the condensation layer 3 on the left side of the tower body 1. A discharge pipe 5 is installed at the bottom of the tower body 1, and a shut-off valve 501 is installed on the discharge pipe 5. A connecting pipe 502 is installed on the right side of the tower body 1, and the connecting pipe 502 transports low-temperature wastewater. Warm water is supplied through a heat exchange tube 6 installed between the fan blade 103 and the spray pipe 2. The heat exchange tube 6 is made of a thermally conductive material. An interface pipe 601 is installed at the left end of the heat exchange tube 6. A rectangular plate 602 is installed on the left side of the tower body 1, and a water tank 603 is installed on the rectangular plate 602. A pump station 604 is installed on the right side of the water tank 603. The pump station 604 is detachably connected to the interface pipe 601 via an auxiliary pipe 605. The pump station 604 is connected to the water tank 603 via a suction pipe 606. The pump station 604 delivers low-temperature water from the water tank 603 to the heat exchange tube 6. During use, high-temperature industrial wastewater is evenly sprayed into the tower body 1 through the spray pipe 2. The motor 102 drives the fan blade 103 to rotate, generating airflow and accelerating the heat exchange process within the tower body 1. Simultaneously, the condensation layer 3 below the spray pipe 2 further promotes heat transfer and condensation, allowing for effective recovery of heat from the wastewater. The recovered heat is transferred to the low-temperature water through heat exchange tubes 6, realizing the reuse of heat. Furthermore, heat exchange tubes 6 are made of thermally conductive material and are distributed in an S-shaped pipe structure within the tower body 1, increasing the heat exchange area and improving heat exchange efficiency. The discharge of wastewater can be controlled by the shut-off valve 501 on the discharge pipe 5, while the connecting pipe 502 is used to transport the low-temperature water, achieving automation and high efficiency in the entire waste heat recovery process.

[0016] In actual use, the auxiliary structure for waste heat recovery in the cooling tower uses a pump station 604 in conjunction with a suction pipe 606 to draw low-temperature water from the water tank 603 and transport it through an auxiliary pipe 605 to the interface pipe 601, filling the heat exchange tubes 6 with low-temperature water. First, the motor 102 drives the output end to rotate the fan blades 103. Then, low-temperature water is transported into the tower body 1 through the connecting pipe 502. Next, high-temperature industrial wastewater is transported into the spray pipe 2 through the auxiliary pipe 605, and finally sprayed out from the nozzle 201, with the sprayed water falling directly into the cooling tower. At the condensation layer 3, the airflow from the air inlet 4 and the fan at the top of the tower 1 forms convection, accelerating heat exchange. Water vapor passing through the condensation layer 3 reaches the low-temperature water area at the bottom of the tower 1. The sprayed water, upon passing through the condensation layer 3, forms high-temperature water vapor. This high-temperature water vapor rises, and at this point, the heat exchange tube 6, made of thermally conductive material, exchanges some of the heat from the high-temperature water vapor with the low-temperature water inside the heat exchange tube 6, thus raising the temperature of the low-temperature water inside the heat exchange tube 6 and completing the heat exchange process of the cooling tower. In the process of recovering and reusing some of the waste heat, after the spray pipe 2 stops working, the staff controls the pump station 604 to extract the relatively high-temperature water from the heat exchange pipe 6. Then, the staff extracts the high-temperature water from the water tank 603 and replenishes it with low-temperature water. This facilitates the secondary replenishment of low-temperature water to the heat exchange pipe 6 and the subsequent waste heat recovery work. After a period of operation, the staff controls the shut-off valve 501 to open, so that the low-temperature water can be discharged and replaced with new low-temperature water in time. The high-temperature industrial wastewater sprayed by the spray pipe 2 exchanges heat with the cold air entering through the air inlet 4. At the same time, the heat exchange pipe 6 uses some of the heat in the high-temperature water vapor to exchange heat with the low-temperature water, effectively recovering the waste heat in the heat exchange process of the cooling tower. Compared with the existing cooling towers that do not have a waste heat recovery auxiliary structure, some heat is not recovered and reused after the heat exchange is completed, which does not meet the problem of energy conservation and emission reduction. The technical solution adopted by this utility model can effectively improve the energy utilization efficiency and also help reduce environmental pollution, achieving a dual improvement of economic and environmental benefits.

[0017] Example 1 like Figure 1-2 As shown, a removable cover plate 607 is installed on the top of the water tank 603, and the heat exchange tubes 6 are distributed in an S-shaped pipe structure in the tower body 1. The overall effect of Embodiment 1 is that, during use, the heat exchange tube 6 with its S-shaped pipe structure increases the contact area for heat exchange, thereby improving heat exchange efficiency. Simultaneously, the removable cover 607 facilitates maintenance and cleaning of the water tank 603, ensuring the cleanliness of the inside of the water tank 603 and preventing any impact on heat exchange performance.

[0018] Working Principle: A pump station, in conjunction with a suction pipe, draws low-temperature water from the tank and delivers it through an auxiliary pipe to the interface pipe, filling the heat exchange tubes with low-temperature water. First, the motor drives the fan blades to rotate, then low-temperature water is delivered into the tower body through the connecting pipe. Next, high-temperature industrial wastewater is delivered into the spray pipes through the auxiliary pipes, and finally sprayed out from the nozzles. The sprayed water falls directly into the condensation layer, where it, combined with the airflow from the air inlet and the fan at the top of the tower, creates convection, accelerating heat exchange. The water vapor passing through the condensation layer reaches the low-temperature water area at the bottom of the tower. As the sprayed water passes through the condensation layer, it forms high-temperature water vapor, which rises... The heat exchange tube structure, made of thermally conductive material, exchanges some of the heat from the high-temperature steam with the low-temperature water inside the heat exchange tube, thereby raising the temperature of the low-temperature water inside the heat exchange tube. This completes the recovery and reuse of some of the waste heat during the heat exchange process in the cooling tower. After the spray pipes stop working, the staff controls the pump station to extract the relatively high-temperature water from the heat exchange tubes. Then, the staff extracts the high-temperature water from the water tank and replenishes it with low-temperature water. This facilitates the secondary replenishment of low-temperature water to the heat exchange tubes in the future and facilitates the subsequent waste heat recovery work. After a period of operation, the staff controls the shut-off valve to open, so that the low-temperature water can be discharged and replaced with new low-temperature water in a timely manner.

Claims

1. A cooling tower waste heat recovery auxiliary structure, comprising a tower body (1), the top of the tower body (1) is an open structure, a support (101) is installed at the opening position, a motor (102) is installed on the support (101), a rotatable fan blade (103) is installed at the output end of the motor (102), characterized in that, A spray pipe (2) is installed below the fan blade (103) in the tower body (1). Spray nozzles (201) are evenly distributed at the bottom of the spray pipe (2). High-temperature industrial wastewater is transported through an auxiliary pipe (605) in the spray pipe (2). A condensation layer (3) is installed below the spray pipe (2). An air inlet (4) is installed below the condensation layer (3) on the left side of the tower body (1). A discharge pipe (5) is installed at the bottom of the tower body (1). A shut-off valve (501) is installed on the discharge pipe (5). A connecting pipe (502) is installed on the right side of the tower body (1). Low-temperature water is transported through the connecting pipe (502). The fan blade (103) and the... A heat exchange tube (6) is installed between the spray pipes (2). The heat exchange tube (6) is made of thermally conductive material. An interface pipe (601) is installed at the left end of the heat exchange tube (6). A rectangular plate (602) is installed on the left side of the tower body (1). A water tank (603) is installed on the rectangular plate (602). A pump station (604) is installed on the right side of the water tank (603). The pump station (604) is detachably connected to the interface pipe (601) through an auxiliary pipe (605). The pump station (604) is connected to the water tank (603) through a suction pipe (606). The pump station (604) transports the low-temperature water from the water tank (603) to the heat exchange tube (6).

2. The cooling tower waste heat recovery auxiliary structure according to claim 1, characterized by, The top of the water tank (603) is fitted with a removable cover plate (607).

3. The auxiliary structure for waste heat recovery of a cooling tower according to claim 1, characterized in that, The heat exchange tubes (6) are distributed in an S-shaped pipeline structure in the tower body (1).

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