Heat exchanger of closed cooling tower

Abstract

The invention relates to the technical field of cooling towers, in particular to a heat exchanger of a closed cooling tower, which comprises a cooling tower body, a support frame is fixedly arranged at the bottom of the cooling tower body, a flow guide mechanism is fixedly connected to the cooling tower body, and a movable seat is arranged in the cooling tower body in a sliding fit manner; a washing air guide frame is rotationally connected to the adjusting block, a driving mechanism is rotationally connected to the interior of the washing air guide frame, in the using process of the closed cooling tower, when the heat exchanger needs to be cleaned, the surface of the plate heat exchanger can be comprehensively washed by arranging the washing air guide frame moving in a reciprocating mode, and the cleaning effect is improved; according to the automatic flushing system, the dependence on manpower is reduced, the manual maintenance cost is reduced, and the frequency of manual operation is reduced through automatic flushing, so that the operation safety risk is reduced, the maintenance efficiency can be remarkably improved, the downtime is reduced, and meanwhile, the service life of equipment is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of cooling towers, and in particular to a heat exchanger of a closed cooling tower. Background Art

[0002] Closed cooling tower is a cooling device commonly used in industrial and building systems. Its main function is to reduce the heat generated by industrial equipment or building systems by cooling water. Different from open cooling tower, closed cooling tower has a closed system design, which provides some unique advantages and applicable scenarios. The following is detailed information about closed cooling tower: The working principle of the closed cooling tower is as follows: Cooling Medium: The cooling medium of a closed cooling tower (usually a liquid such as water or a specific coolant) circulates in a closed piping system within the tower.

[0003] Heat exchange: The cooling medium flows through the heat exchanger (such as heat exchange tubes) inside the tower, where it exchanges heat with the air and transfers heat to the air outside the tower.

[0004] Air cooling: The cooling medium after heat exchange is cooled in the air outside the tower. During this process, the air flows through the tower body through fans or natural convection, thereby removing heat.

[0005] Reflux: The cooled medium flows back to the equipment or system that needs to be cooled, completing the cooling cycle.

[0006] The heat exchanger of a closed cooling tower is one of its core components and is responsible for transferring heat from the cooling medium to the air. The following are some of the main types, structures, and features of closed cooling tower heat exchangers: Shell and tube heat exchanger: consists of an inner tube bundle and an outer shell. The cooling medium flows inside the tube bundle, while another medium (usually air) flows between the tube bundle and the shell.

[0007] Plate heat exchanger: It consists of multiple parallel metal plates, with the cooling medium flowing between the plates and another medium flowing on the other side of the plates.

[0008] During the use of closed cooling tower heat exchangers, the content of particulate matter in the air will increase due to industrial emissions, traffic pollution or construction activities in the surrounding environment. The external air contains dust, sediment and other particulate matter, which will be deposited on the surface of the heat exchanger with the flow of air. Since the existing closed cooling towers need to be manually disassembled and removed for cleaning during use, labor costs will be increased. At the same time, there are operational safety risks during the disassembly and installation process, such as equipment falling or personal injury. At the same time, improper operation may cause damage to the heat exchanger or other components, increase maintenance costs, and affect the maintenance efficiency and overall operational reliability of the closed cooling tower.

[0009] In summary, the prior art lacks an automated cleaning technology for heat exchangers in closed cooling towers. Summary of the invention

[0010] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a heat exchanger for a closed cooling tower.

[0011] To achieve the above purpose, the technical solution adopted by the present invention is: a heat exchanger of a closed cooling tower, including a cooling tower body, a support frame is fixedly installed at the bottom of the cooling tower body, a flow guide mechanism is fixedly connected to the cooling tower body, a movable seat is slidably provided in the cooling tower body, a plate heat exchanger is installed on the movable seat, sealing covers are rotatably connected to the inner walls of both sides of the cooling tower body, a transmission mechanism is rotatably connected in one of the sealing covers, an adjustment block is slidably provided on the transmission mechanism, a flushing air guide frame is rotatably connected on the adjustment block, and a driving mechanism is rotatably provided in the flushing air guide frame.

[0012] Preferably, a water pump and an air pump are respectively installed and fixed on the support frame.

[0013] Preferably, the guide mechanism includes a fixed guide plate, which is fixedly connected to the cooling tower body, and two guide tubes are connected and fixedly arranged through the fixed guide plate, and the other ends of the two guide tubes are respectively connected to the output ends of the water pump and the air pump, and the outer wall of the fixed guide plate is rotatably connected with an adjustable guide sleeve, one end of the adjustable guide sleeve is fixedly connected to a motor, and the motor is fixedly connected to the fixed guide plate.

[0014] Preferably, an elastic band is connected and fixedly provided on the movable seat, and the other end of the elastic band is connected and fixedly provided on the bottom end of the cooling tower body. A hydraulic rod is connected and fixedly provided on the movable seat, and the other end of the hydraulic rod is connected and fixedly provided on the cooling tower body. A valve is connected and fixedly provided through the bottom end of the movable seat, and adjustment racks are connected and fixedly provided on both sides of the movable seat.

[0015] Preferably, a worm wheel is fixedly connected to one end of the sealing cover, a worm is meshingly transmitted with one side of the worm wheel, the worm is rotatably connected to the cooling tower body, a universal joint A is fixedly connected to one end of the worm, the other end of the universal joint A is rotatably connected to the cooling tower body, an adjusting wheel is fixedly connected to the universal joint A, and the adjusting wheel is meshingly transmitted with an adjusting rack.

[0016] Preferably, the transmission mechanism includes a reciprocating screw, both ends of the reciprocating screw are rotatably connected to the inner wall of the sealing cover, the reciprocating screw is slidably matched with the adjustment block, one end of the reciprocating screw is connected and fixedly provided with a driven wheel, one side of the driven wheel is meshingly transmitted with a driving wheel, a transmission gear shaft is fixedly connected to the driving wheel, and the transmission gear shaft is rotatably connected to the inner wall of the sealing cover.

[0017] Preferably, a hose is fixedly connected to the input end of the flushing air guide frame, the other end of the hose extends to the sealing cover and the inner wall of the cooling tower body, extends to the outside and is rotatably connected to the adjusting guide sleeve, and a gear is fixedly connected to one end of the flushing air guide frame.

[0018] Preferably, an electric push rod is fixedly connected to the adjusting block, a transmission rack is fixedly connected to the output end of the electric push rod, and the transmission rack is meshed with a gear for transmission.

[0019] Preferably, the driving mechanism includes a universal joint B, one end of which extends into the flushing air guide frame and is connected and fixedly provided with an impeller, the other end of which is rotatably connected to the adjustment block, and a transmission wheel is connected and fixedly provided on the universal joint B, and the transmission wheel is meshed with the transmission gear shaft for transmission.

[0020] Compared with the prior art, the present invention has the following beneficial effects: During the use of the closed cooling tower, when the heat exchanger needs to be cleaned, a flushing air guide frame is set up. Driven by the driving mechanism and the transmission mechanism, the flushing air guide frame can be driven to move back and forth to flush the plate heat exchanger. The flushing air guide frame can be cleaned without disassembling the equipment. The reciprocating flushing air guide frame can achieve comprehensive flushing of the surface of the plate heat exchanger, improving the cleaning effect. The automated flushing system reduces dependence on manual labor and reduces manual maintenance costs. Automated flushing reduces the frequency of manual operation, thereby reducing operational safety risks, significantly improving maintenance efficiency, reducing downtime, and extending the service life of the equipment. By setting the elastic band and the sealing cover, it is possible to block the water during cleaning, prevent the water during cleaning from entering the closed cooling tower, protect the equipment from water damage, extend the service life of the cooling tower, ensure that the cleaning water is concentrated in the area that needs to be cleaned, improve the cleaning effect and reduce interference with other components, so that the cleaning process becomes more efficient and safe, and effectively protect the long-term operation stability of the closed cooling tower; By setting up a guide mechanism, the conversion of air and water flow can be achieved. After flushing the plate heat exchanger, high-speed air is used to blow dry the water stains on the plate heat exchanger, shortening the drying time and reducing equipment downtime. It not only improves the cleaning and drying effects, but also improves the overall operating efficiency and long-term stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of a heat exchanger of a closed cooling tower of the present invention during flushing; Figure 2 It is a schematic diagram of the overall structure of a heat exchanger of a closed cooling tower of the present invention when in use; Figure 3 It is a schematic cross-sectional view of the overall structure of a heat exchanger of a closed cooling tower of the present invention; Figure 4 It is a partial cross-sectional schematic diagram of a part of the structure of a heat exchanger of a closed cooling tower of the present invention; Figure 5 This is a schematic diagram of the support frame structure of a heat exchanger of a closed cooling tower of the present invention; Figure 6 It is a schematic diagram of the structure of a flow guiding mechanism of a heat exchanger of a closed cooling tower of the present invention; Figure 7 It is a partial cross-sectional schematic diagram of a movable seat structure of a heat exchanger of a closed cooling tower of the present invention; Figure 8 This is a schematic diagram of the sealing cover structure of a heat exchanger of a closed cooling tower of the present invention; Fig. 9 A schematic diagram of the transmission mechanism structure of a heat exchanger of a closed cooling tower of the present invention; Fig.10 The present invention is a partial cross-sectional expansion schematic diagram of a structure including a flushing air guide frame of a heat exchanger of a closed cooling tower.

[0022] 1. Cooling tower body; 2. Support frame; 3. Guide mechanism; 4. Moving seat; 5. Plate heat exchanger; 6. Sealing cover; 7. Transmission mechanism; 8. Adjustment block; 9. Flushing air guide frame; 10. Driving mechanism; 201. Water pump; 202. Air pump; 301. Fixed guide plate; 302. Guide pipe; 303. Adjustment guide sleeve; 304. Motor; 401. Elastic belt; 402. Hydraulic rod; 40 3. Valve; 404. Adjusting rack; 601. Worm gear; 602. Worm; 603. Universal joint A; 604. Adjusting wheel; 701. Reciprocating screw; 702. Driven wheel; 703. Driving wheel; 704. Transmission gear shaft; 901. Hose; 902. Gear; 801. Electric push rod; 802. Transmission rack; 1001. Universal joint B; 1002. Impeller; 1003. Transmission wheel. DETAILED DESCRIPTION

[0023] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0024] like Figure 1-Figure 10 A heat exchanger of a closed cooling tower is shown, comprising a cooling tower body 1, a support frame 2 is fixedly installed at the bottom of the cooling tower body 1, a flow guide mechanism 3 is fixedly connected to the cooling tower body 1, a movable seat 4 is slidably provided in the cooling tower body 1, a plate heat exchanger 5 is installed on the movable seat 4, sealing covers 6 are rotatably connected to the inner walls of both sides of the cooling tower body 1, a transmission mechanism 7 is rotatably provided in one of the sealing covers 6, an adjustment block 8 is slidably provided on the transmission mechanism 7, a flushing air guide frame 9 is rotatably provided on the adjustment block 8, and a driving mechanism 10 is rotatably provided in the flushing air guide frame 9.

[0025] like Figure 5 As shown, a water pump 201 and an air pump 202 are respectively installed and fixed on the support frame 2.

[0026] like Figure 6 As shown, the guide mechanism 3 includes a fixed guide plate 301, which is connected and fixedly arranged with the cooling tower body 1, and two guide pipes 302 are connected and fixedly arranged on the fixed guide plate 301, and the other ends of the two guide pipes 302 are respectively connected with the output ends of the water pump 201 and the air pump 202, and an adjustable guide sleeve 303 is rotatably connected and arranged on the outer wall of the fixed guide plate 301, and a motor 304 is connected and fixedly arranged at one end of the adjustable guide sleeve 303, and the motor 304 is connected and fixedly arranged with the fixed guide plate 301. The motor 304 drives the adjustable guide sleeve 303 to rotate, so that the adjustable guide sleeve 303 is connected with another guide pipe 302 on the fixed guide plate 301.

[0027] like Figure 7As shown, an elastic band 401 is connected and fixedly arranged on the movable seat 4, and the other end of the elastic band 401 is connected and fixedly arranged with the bottom end of the cooling tower body 1, a hydraulic rod 402 is connected and fixedly arranged on the movable seat 4, and the other end of the hydraulic rod 402 is connected and fixedly arranged with the cooling tower body 1, a valve 403 is connected and fixedly arranged through the bottom end of the movable seat 4, and adjustment racks 404 are connected and fixedly arranged on both sides of the movable seat 4. The movable seat 4 is driven downward by the hydraulic rod 402, and at this time, the elastic band 401 will stretch to form a fence.

[0028] like Figure 8 As shown, a worm wheel 601 is connected and fixedly arranged at one end of the sealing cover 6, a worm 602 is meshingly arranged at one side of the worm wheel 601, the worm 602 is rotatably connected to the cooling tower body 1, a universal joint A603 is connected and fixedly arranged at one end of the worm 602, the other end of the universal joint A603 is rotatably connected to the cooling tower body 1, an adjusting wheel 604 is connected and fixedly arranged on the universal joint A603, and the adjusting wheel 604 is meshingly arranged with the adjusting rack 404. The adjusting rack 404 on the moving seat 4 will drive the adjusting wheel 604 to rotate, and at this time the adjusting wheel 604 will drive the connected universal joint A603 to rotate, so that the universal joint A603 drives the connected worm 602 to rotate, thereby driving the sealing cover 6 connected to the worm wheel 601 to be leveled, and the bottom opening of the cooling tower body 1 is covered.

[0029] like Fig. 9 As shown, the transmission mechanism 7 includes a reciprocating screw 701, both ends of which are rotatably connected to the inner wall of the sealing cover 6, the reciprocating screw 701 is slidably matched with the adjustment block 8, one end of the reciprocating screw 701 is connected and fixedly provided with a driven wheel 702, one side of the driven wheel 702 is meshingly provided with a driving wheel 703, and the driving wheel 703 is connected and fixedly provided with a transmission gear shaft 704, which is rotatably connected to the inner wall of the sealing cover 6. The transmission gear shaft 704 rotates, so that the transmission gear shaft 704 drives the driven wheel 702 to rotate through the driving wheel 703, so that the driven wheel 702 drives the connected reciprocating screw 701 to rotate, and drives the adjustment block 8 to reciprocate.

[0030] like Fig.10 As shown, a hose 901 is fixedly connected to the input end of the flushing air guide frame 9, and the other end of the hose 901 extends to the sealing cover 6 and the inner wall of the cooling tower body 1 to the outside and is rotatably connected to the regulating guide sleeve 303. A gear 902 is fixedly connected to one end of the flushing air guide frame 9.

[0031] like Fig.10As shown, an electric push rod 801 is connected and fixedly arranged on the adjustment block 8, and a transmission rack 802 is connected and fixedly arranged on the output end of the electric push rod 801, and the transmission rack 802 is meshed and transmitted with the gear 902. The electric push rod 801 drives the transmission rack 802 to move, so that the transmission rack 802 drives the flushing air guide frame 9 connected to the gear 902 to rotate horizontally above the plate heat exchanger 5.

[0032] like Fig.10 As shown, the driving mechanism 10 includes a universal joint B1001, one end of which extends into the flushing air guide frame 9 and is connected and fixedly provided with an impeller 1002, the other end of which is rotatably connected and provided with the adjustment block 8, and a transmission wheel 1003 is connected and fixedly provided on the universal joint B1001, and the transmission wheel 1003 is meshed and transmitted with the transmission gear shaft 704. When high-speed flowing water passes through the flushing air guide frame 9, it will drive the impeller 1002 to rotate, so that the impeller 1002 drives the universal joint B1001 to rotate, and then the universal joint B1001 will drive the transmission wheel 1003 to rotate, thereby driving the transmission gear shaft 704 to rotate.

[0033] Working principle: After the cooling tower body 1 has been used for a period of time, the plate heat exchanger 5 needs to be cleaned. At this time, the hydraulic rod 402 is used to drive the movable seat 4 to move downward. At this time, the elastic belt 401 will stretch to form a barrier, and at the same time, the adjusting rack 404 on the movable seat 4 will drive the adjusting wheel 604 to rotate. At this time, the adjusting wheel 604 will drive the connected universal joint A603 to rotate, so that the universal joint A603 drives the connected worm 602 to rotate, thereby driving the sealing cover 6 connected to the worm wheel 601 to lay flat, covering the bottom opening of the cooling tower body 1; Then, the electric push rod 801 is used to drive the transmission rack 802 to move, so that the transmission rack 802 drives the flushing air guide frame 9 connected to the gear 902 to rotate horizontally above the plate heat exchanger 5, and then the water pump 201 is used to inject water into the fixed guide plate 301 through the guide pipe 302, and then inject water into the adjustment guide sleeve 303 through the fixed guide plate 301, and then inject water into the flushing air guide frame 9 through the hose 901, so as to be sprayed out to flush the surface of the plate heat exchanger 5, and the flushing sewage is discharged through the valve 403; At the same time, when the high-speed flowing water passes through the flushing air guide frame 9, it will drive the impeller 1002 to rotate, so that the impeller 1002 drives the universal joint B1001 to rotate, and then the universal joint B1001 drives the transmission wheel 1003 to rotate, thereby driving the transmission gear shaft 704 to rotate, so that the transmission gear shaft 704 drives the driven wheel 702 to rotate through the driving wheel 703, so that the driven wheel 702 drives the connected reciprocating screw rod 701 to rotate, and drives the adjustment block 8 to reciprocate, so that the flushing air guide frame 9 continuously flushes the surface of the plate heat exchanger 5; After flushing, turn off the water pump 201, use the motor 304 to drive the adjustable guide sleeve 303 to rotate, so that the adjustable guide sleeve 303 is connected to another guide tube 302 on the fixed guide plate 301, and then use the air pump 202 to inject high-pressure gas, which is sprayed through the flushing air guide frame 9 to dry the surface of the plate heat exchanger 5.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A heat exchanger for a closed cooling tower, comprising a cooling tower body (1), characterized in that: A support frame (2) is fixedly installed at the bottom of the cooling tower body (1), a flow guide mechanism (3) is fixedly connected to the cooling tower body (1), a movable seat (4) is slidably provided inside the cooling tower body (1), a plate heat exchanger (5) is installed on the movable seat (4), sealing covers (6) are rotatably connected to the inner walls of both sides of the cooling tower body (1), a transmission mechanism (7) is rotatably provided inside one of the sealing covers (6), an adjustment block (8) is slidably provided on the transmission mechanism (7), a flushing air guide frame (9) is rotatably provided on the adjustment block (8), and a driving mechanism (10) is rotatably provided inside the flushing air guide frame (9).

2. A heat exchanger for a closed cooling tower according to claim 1, characterized in that: A water pump (201) and an air pump (202) are respectively installed and fixed on the support frame (2).

3. The heat exchanger of a closed cooling tower according to claim 1, characterized in that: The flow guide mechanism (3) comprises a fixed flow guide plate (301), the fixed flow guide plate (301) being connected and fixedly arranged with the cooling tower body (1), two flow guide pipes (302) being connected and fixedly arranged through the fixed flow guide plate (301), the other ends of the two flow guide pipes (302) being respectively connected with the output ends of the water pump (201) and the air pump (202), an adjustable flow guide sleeve (303) being rotatably connected to the outer wall of the fixed flow guide plate (301), one end of the adjustable flow guide sleeve (303) being connected and fixedly arranged with a motor (304), and the motor (304) being connected and fixedly arranged with the fixed flow guide plate (301).

4. A heat exchanger for a closed cooling tower according to claim 1, characterized in that: An elastic band (401) is fixedly connected to the movable seat (4), the other end of the elastic band (401) is fixedly connected to the bottom end of the cooling tower body (1), a hydraulic rod (402) is fixedly connected to the movable seat (4), the other end of the hydraulic rod (402) is fixedly connected to the cooling tower body (1), a valve (403) is connected and fixedly provided through the bottom end of the movable seat (4), and adjustment racks (404) are fixedly provided on both sides of the movable seat (4).

5. A heat exchanger for a closed cooling tower according to claim 4, characterized in that: A worm wheel (601) is fixedly connected to one end of the sealing cover (6), a worm (602) is meshingly connected to one side of the worm wheel (601), the worm (602) is rotatably connected to the cooling tower body (1), a universal joint A (603) is fixedly connected to one end of the worm (602), the other end of the universal joint A (603) is rotatably connected to the cooling tower body (1), an adjusting wheel (604) is fixedly connected to the universal joint A (603), and the adjusting wheel (604) is meshingly connected to the adjusting rack (404).

6. A heat exchanger for a closed cooling tower according to claim 1, characterized in that: The transmission mechanism (7) comprises a reciprocating screw (701), both ends of the reciprocating screw (701) being rotatably connected to the inner wall of the sealing cover (6), the reciprocating screw (701) being slidably matched with the adjustment block (8), one end of the reciprocating screw (701) being connected and fixedly provided with a driven wheel (702), one side of the driven wheel (702) being meshingly transmission-equipped with a driving wheel (703), a transmission gear shaft (704) being connected and fixedly provided on the driving wheel (703), and the transmission gear shaft (704) being rotatably connected to the inner wall of the sealing cover (6).

7. The heat exchanger of a closed cooling tower according to claim 1, characterized in that: A hose (901) is fixedly connected to the input end of the flushing air guide frame (9), the other end of the hose (901) extends to the sealing cover (6) and the inner wall of the cooling tower body (1) to the outside and is rotatably connected to the regulating guide sleeve (303), and a gear (902) is fixedly connected to one end of the flushing air guide frame (9).

8. The heat exchanger of a closed cooling tower according to claim 1, characterized in that: An electric push rod (801) is fixedly connected to the regulating block (8), a transmission rack (802) is fixedly connected to the output end of the electric push rod (801), and the transmission rack (802) is meshed with the gear (902) for transmission.

9. The heat exchanger of a closed cooling tower according to claim 1, characterized in that: The driving mechanism (10) comprises a universal joint B (1001), one end of the universal joint B (1001) extends into the flushing air guide frame (9) and is connected and fixedly provided with an impeller (1002), the other end of the universal joint B (1001) is rotatably connected to the adjustment block (8), a transmission wheel (1003) is connected and fixedly provided on the universal joint B (1001), and the transmission wheel (1003) is meshed with a transmission gear shaft (704) for transmission.

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