Device and method for preventing uneven refrigerant distribution of U-shaped tube heat exchanger

Abstract

The device comprises supporting legs, the tops of the supporting legs are fixedly connected with a heat exchange cylinder, the top of the heat exchange cylinder is communicated with a liquid inlet, the bottom of the heat exchange cylinder is communicated with a liquid outlet, the tops of the supporting legs are fixedly connected with dismounting mechanisms, and the dismounting mechanisms are fixedly connected with the supporting legs. And one side of the dismounting mechanism is fixedly connected with a refrigeration mechanism, and the inner wall of the refrigeration mechanism is fixedly connected with a cleaning mechanism. The invention relates to the technical field of U-shaped tube heat exchangers. When the equipment exchanges heat, through cooperation of a driving motor, a transmission shaft, a coolant inlet pipe, a telescopic air bag, a connecting conveying pipe, U-shaped pipes and a sealing ring plate, coolant can enter the multiple U-shaped pipes more uniformly, the situation that no coolant enters part of the U-shaped pipes to affect the heat exchange effect of the equipment is avoided, meanwhile, liquid in a heat exchange cylinder can be stirred, and the heat exchange effect is improved. Liquid heat exchange is more uniform, and the heat exchange effect of equipment is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of U-tube heat exchangers, in particular to a device and a method for preventing uneven refrigerant distribution in a U-tube heat exchanger. Background Art

[0002] A type of shell and tube heat exchanger, belonging to petrochemical equipment, consisting of a tube box, a shell, and a tube bundle. It is named because its heat exchange tubes are U-shaped. The U-tube heat exchanger has only one tube sheet, and both ends of the tube are fixed to the same tube sheet.

[0003] When injecting coolant into the U-tube of the existing U-tube heat exchanger, uneven coolant injection may occur in multiple U-tubes, affecting the heat exchange effect of the equipment. At the same time, when a single U-tube exchanges heat with the liquid inside the equipment, its effective range is limited. If the number of U-tubes is simply increased, the loss of equipment resources will increase.

[0004] To this end, the present invention provides a device and method for preventing uneven refrigerant distribution in a U-tube heat exchanger to solve the above-mentioned problem. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a device and method for preventing uneven refrigerant distribution in a U-tube heat exchanger, thereby solving the above-mentioned problems.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a device for preventing uneven refrigerant distribution in a U-tube heat exchanger, comprising a support leg, a heat exchange cylinder is fixedly connected to the top of the support leg, a liquid inlet is connected to the top of the heat exchange cylinder, a liquid discharge port is connected to the bottom of the heat exchange cylinder, a disassembly mechanism is fixedly connected to the top of the support leg, a refrigeration mechanism is fixedly connected to one side of the disassembly mechanism, a cleaning mechanism is fixedly connected to the inner wall of the refrigeration mechanism, and the inner wall of the disassembly mechanism is movably connected to the side wall of the refrigeration mechanism; The disassembly mechanism comprises a first fixing ring, the side wall of the supporting leg is fixedly connected to the bottom of the first fixing ring, a micro hydraulic cylinder is fixedly connected to one side of the first fixing ring, a hydraulic rod is fixedly connected to the output end of the micro hydraulic cylinder, an adsorption plate is fixedly connected to one side of the hydraulic rod, a second fixing ring is movably connected to one side of the adsorption plate, and a sealing ring plate is rotatably connected to the bottom of the second fixing ring; The refrigeration mechanism also includes a sealing cover, the other side of the sealing ring plate is movably connected to one side of the sealing cover, the inner wall of the sealing cover is rotatably connected to a rotating ring, one side of the rotating ring is connected to a coolant outlet pipe, one side of the rotating ring is connected to a coolant inlet pipe, the inner wall of the coolant inlet pipe is fixedly connected to a telescopic airbag, the inner wall of the telescopic airbag is movably connected to a connecting delivery pipe, one side of the connecting delivery pipe is connected to a U-shaped pipe, and the other side of the sealing ring plate is fixedly connected to a coolant storage bin; The cleaning mechanism includes an annular slide rail, the inner wall of the U-shaped tube is fixedly connected to the annular slide rail, the annular slide rail is slidably connected to a connecting vertical rod through an electronic slider, one side of the connecting vertical rod is fixedly connected to a first electric rotating rod, and the side wall of the first electric rotating rod is fixedly connected to a cleaning soft brush.

[0007] Preferably, the disassembly mechanism further comprises an electric slide rail, a side wall of the electric slide rail is movably connected to an inner wall of the heat exchange cylinder, and the electric slide rail is slidably connected to a baffle through an electronic slider.

[0008] Preferably: the baffle side wall is movably connected to the inner wall of the heat exchange tube, the hydraulic rod side wall is fixedly connected to the inner wall of the first fixed ring, one side of the heat exchange tube is movably connected to the other side of the sealing ring plate, and one side of the electric slide rail is fixedly connected to the other side of the sealing ring plate.

[0009] Preferably: the refrigeration mechanism also includes a limiting round rod, the other side of the sealing cover is fixedly connected to the limiting round rod, one side of the limiting round rod is fixedly connected to a limiting circular plate, one side of the limiting circular plate is fixedly connected to a driving motor, and the driving motor is fixedly connected to a transmission shaft through an output end.

[0010] Preferably: one side of the transmission shaft is fixedly connected to the other side of the sealing ring plate, the transmission shaft passes through the sealing cover, the other side of the coolant storage bin is slidably connected to the inner wall of the sealing cover, and the bottom of the second fixing ring is fixedly connected to the side wall of the sealing cover.

[0011] Preferably: the cleaning mechanism also includes a garbage storage box, the other side of the U-shaped tube is connected to the side wall of the garbage storage box, the inner wall of the garbage storage box is provided with a water filter hole, the inner wall of the garbage storage box is fixedly connected to a second electric rotating rod, and the side wall of the second electric rotating rod is fixedly connected to an adhesion roller.

[0012] Preferably, the side wall of the second electric rotating rod is movably connected to the side wall of the cleaning soft brush, and the side wall of the cleaning soft brush is slidably connected to the inner wall of the U-shaped tube.

[0013] A method for preventing uneven refrigerant distribution in a U-tube heat exchanger comprises the following steps: S1. The staff evenly inputs the coolant into the U-shaped tube through multiple connecting delivery pipes to exchange heat with the liquid inside the heat exchange tube; S2, start the drive motor, which drives the U-shaped tube to rotate through the transmission shaft and the sealing ring plate to stir and mix the liquid inside the heat exchange tube; S3, start the annular slide rail, the annular slide rail drives the cleaning soft brush to move inside the U-shaped tube and scrub the impurities on the inner wall by connecting the vertical rod and the first electric rotating rod, start the second electric rotating rod, and the second electric rotating rod drives the adhesion roller to rotate to adhere the garbage impurities attached to the side wall of the cleaning soft brush; S4. When the U-shaped tube needs to be repaired or replaced, start the micro hydraulic cylinder, which drives the U-shaped tube to move out of the heat exchange tube through the hydraulic rod, adsorption plate, second fixing ring and sealing ring plate, and start the electric slide rail, which drives the baffle plate to move and adjust the baffle plate spacing. Beneficial Effects

[0014] The present invention provides a device and method for preventing uneven refrigerant distribution in a U-tube heat exchanger. Compared with the prior art, it has the following beneficial effects: (1) A device for preventing uneven refrigerant distribution in a U-tube heat exchanger. When the equipment is exchanging heat, the driving motor, the transmission shaft, the coolant inlet pipe, the telescopic airbag, the connecting delivery pipe, the U-tube and the sealing ring plate can make the coolant enter the multiple U-tubes more evenly, thereby avoiding that the coolant does not enter some U-tubes and affects the heat exchange effect of the equipment. At the same time, the liquid inside the heat exchange tube can be stirred to make the liquid heat exchange more even, further improving the heat exchange effect of the equipment.

[0015] (2) A device for preventing uneven refrigerant distribution in a U-tube heat exchanger. When there are garbage impurities attached to the inside of the U-tube, the impurities inside the U-tube can be scrubbed by the cooperation of the annular slide rail, the connecting vertical rod, the first electric rotating rod, the cleaning soft brush, the garbage storage box, the second electric rotating rod and the adhesion roller to prevent the U-tube from being blocked by impurities and damaged. At the same time, the garbage cleaned by the cleaning soft brush can be stored in a limited position to prevent it from entering the annular ring together with the coolant and causing damage to the equipment.

[0016] (3) A device for preventing uneven refrigerant distribution in a U-tube heat exchanger. When the U-tube needs to be maintained or replaced, the first fixing ring, the second fixing ring, the micro hydraulic cylinder, the hydraulic rod, the adsorption plate, the electric slide rail, the baffle plate and the sealing ring plate can be used to automatically remove the U-tube from the inside of the heat exchange tube and adjust the spacing between the multiple baffle plates, thereby improving the degree of automation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a device for preventing uneven refrigerant distribution in a U-tube heat exchanger according to the present invention; Figure 2 It is a schematic diagram of the internal structure of the device for preventing uneven refrigerant distribution in a U-tube heat exchanger according to the present invention; Figure 3 It is a structural schematic diagram of the disassembly mechanism of the present invention; Figure 4 It is a structural schematic diagram of the refrigeration mechanism of the present invention; Figure 5 It is a schematic diagram of the position structure of the coolant storage bin of the present invention; Figure 6 It is a structural schematic diagram of the cleaning mechanism of the present invention; Figure 7 yes Figure 6 A in the enlarged view; Figure 8 It is a schematic diagram of the internal structure of the garbage storage box of the present invention.

[0018] In the figure: 1. supporting leg; 2. heat exchange cylinder; 3. liquid inlet; 4. liquid discharge port; 5. disassembly mechanism; 6. refrigeration mechanism; 7. cleaning mechanism; 50. first fixed ring; 51. second fixed ring; 52. micro hydraulic cylinder; 53. hydraulic rod; 54. adsorption plate; 55. electric slide rail; 56. baffle plate; 57. sealing ring plate; 60. driving motor; 61. transmission shaft; 62. limiting circular plate; 63. limiting circular rod; 64. rotating circular ring; 65. sealing cover; 66. coolant inlet pipe; 67. coolant outlet pipe; 68. telescopic airbag; 681. connecting delivery pipe; 682. U-shaped pipe; 69. coolant storage bin; 70. annular slide rail; 71. connecting vertical rod; 72. first electric rotating rod; 73. cleaning soft brush; 74. garbage storage box; 75. water filter hole; 76. second electric rotating rod; 77. adhesion roller. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0020] See also Figure 1 - Figure 3 , a device for preventing uneven refrigerant distribution in a U-tube heat exchanger, comprising a support leg 1, a heat exchange tube 2 is fixedly connected to the top of the support leg 1, a liquid inlet 3 is connected to the top of the heat exchange tube 2, a liquid discharge port 4 is connected to the bottom of the heat exchange tube 2, a disassembly mechanism 5 is fixedly connected to the top of the support leg 1, a refrigeration mechanism 6 is fixedly connected to one side of the disassembly mechanism 5, a cleaning mechanism 7 is fixedly connected to the inner wall of the refrigeration mechanism 6, and the inner wall of the disassembly mechanism 5 is movably connected to the side wall of the refrigeration mechanism 6; The disassembly mechanism 5 includes a first fixing ring 50, a side wall of the support leg 1 is fixedly connected to the bottom of the first fixing ring 50, a micro hydraulic cylinder 52 is fixedly connected to one side of the first fixing ring 50, a hydraulic rod 53 is fixedly connected to the output end of the micro hydraulic cylinder 52, a suction plate 54 is fixedly connected to one side of the hydraulic rod 53, a second fixing ring 51 is movably connected to one side of the suction plate 54, and a sealing ring plate 57 is rotatably connected to the bottom of the second fixing ring 51; The refrigeration mechanism 6 also includes a sealing cover 65, the other side of the sealing ring plate 57 is movably connected to one side of the sealing cover 65, the inner wall of the sealing cover 65 is rotatably connected to a rotating ring 64, one side of the rotating ring 64 is connected to a coolant outlet pipe 67, one side of the rotating ring 64 is connected to a coolant inlet pipe 66, the inner wall of the coolant inlet pipe 66 is fixedly connected to a telescopic airbag 68, the inner wall of the telescopic airbag 68 is movably connected to a connecting delivery pipe 681, one side of the connecting delivery pipe 681 is connected to a U-shaped pipe 682, and the other side of the sealing ring plate 57 is fixedly connected to a coolant storage bin 69; The cleaning mechanism 7 includes an annular slide rail 70, the inner wall of the U-shaped tube 682 is fixedly connected to the annular slide rail 70, the annular slide rail 70 is slidably connected to a connecting vertical rod 71 through an electronic slider, a first electric rotating rod 72 is fixedly connected to one side of the connecting vertical rod 71, and a cleaning soft brush 73 is fixedly connected to the side wall of the first electric rotating rod 72; The disassembly mechanism 5 further includes an electric slide rail 55, the side wall of the electric slide rail 55 is movably connected to the inner wall of the heat exchange cylinder 2, the electric slide rail 55 is slidably connected to a baffle plate 56 through an electronic slider, the side wall of the baffle plate 56 is movably connected to the inner wall of the heat exchange cylinder 2, the side wall of the hydraulic rod 53 is fixedly connected to the inner wall of the first fixing ring 50, one side of the heat exchange cylinder 2 is movably connected to the other side of the sealing ring plate 57, and one side of the electric slide rail 55 is fixedly connected to the other side of the sealing ring plate 57; It should be noted that the baffle plate 56 is provided to limit and block the liquid to prevent the liquid from flowing too fast inside the heat exchange tube 2 and affecting the heat exchange effect of the equipment. The electric slide rail 55 is started, and the electric slide rail 55 drives the baffle plate 56 to move to adjust the distance between the baffle plates 56. There is no need for the staff to manually adjust it. When the U-tube 682 needs to be replaced and repaired, the micro hydraulic cylinder 52 is started, and the micro hydraulic cylinder 52 is extended through the hydraulic rod 53 and the adsorption plate 54. The adsorption plate 54 is extended to drive the U-tube 682 to move away from one side of the heat exchange tube 2 through the sealing ring plate 57, and the U-tube 682 is moved out of the heat exchange tube 2, which is convenient for the staff to maintain and replace it. Example

[0021] See also Figure 4 - Figure 5 , a device for preventing uneven refrigerant distribution in a U-tube heat exchanger, wherein the refrigeration mechanism 6 also includes a limiting round rod 63, the other side of a sealing cover 65 is fixedly connected to the limiting round rod 63, one side of the limiting round rod 63 is fixedly connected to a limiting circular plate 62, one side of the limiting circular plate 62 is fixedly connected to a driving motor 60, the driving motor 60 is fixedly connected to a transmission shaft 61 through an output end, one side of the transmission shaft 61 is fixedly connected to the other side of a sealing ring plate 57, the transmission shaft 61 passes through the sealing cover 65, the other side of a coolant storage bin 69 is slidably connected to the inner wall of the sealing cover 65, and the bottom of the second fixing ring 51 is fixedly connected to the side wall of the sealing cover 65; It should be noted that the staff inputs the liquid into the heat exchange tube 2 through the liquid inlet 3, and the liquid is discharged through the liquid discharge port 4 after the heat exchange in the heat exchange tube 2 is completed. The staff installs the connecting and conveying pipe 681 on one side of the U-shaped tube 682 and starts the telescopic airbag 68. The telescopic airbag 68 fixes the multiple connecting and conveying pipes 681 to prevent the connecting and conveying pipes 681 from shaking inside the telescopic airbag 68. The staff inputs the coolant into the U-shaped tube 682 through the connecting and conveying pipe 681 to cool the liquid for heat exchange. The U-shaped tube 682 is fixed inside the heat exchange tube 2 and has limited heat exchange effect on the liquid. The driving motor 60 is started. The driving motor 60 drives the U-shaped tube 682 to rotate through the transmission shaft 61 and the sealing ring plate 57 to stir the liquid inside the heat exchange tube 2, so that the heat exchange of the liquid inside the heat exchange tube 2 is more uniform, thereby improving the heat exchange efficiency of the equipment. The driving motor 60 is clamped and limited by the cooperation of the transmission shaft 61 and the limiting circular plate 62 to prevent the driving motor 60 from rotating when rotating. Example

[0022] See also Figure 6 - Figure 8 , a device for preventing uneven distribution of refrigerant in a U-tube heat exchanger, the cleaning mechanism 7 also includes a garbage storage box 74, the other side of the U-tube 682 is connected to the side wall of the garbage storage box 74, the inner wall of the garbage storage box 74 is provided with a water filter hole 75, the inner wall of the garbage storage box 74 is fixedly connected to a second electric rotating rod 76, the side wall of the second electric rotating rod 76 is fixedly connected to an adhesion roller 77, the side wall of the second electric rotating rod 76 is movably connected to the side wall of the cleaning soft brush 73, and the side wall of the cleaning soft brush 73 is slidably connected to the inner wall of the U-tube 682; It should be noted that as the equipment works for a long time, garbage and impurities will be attached to the inside of the U-shaped tube 682. The first electric rotating rod 72 is started, and the first electric rotating rod 72 drives the cleaning soft brush 73 to rotate, and the annular slide rail 70 is started. The annular slide rail 70 drives the cleaning soft brush 73 to move inside the U-shaped tube 682 by connecting the vertical rod 71 and the first electric rotating rod 72, so as to remove the garbage and impurities inside the U-shaped tube 682. There is no need for staff to clean it. At the same time, when the annular slide rail 70 drives the cleaning soft brush 73 to move, the cleaning soft brush 73 will clean the garbage out. The impurities are pushed into the garbage storage box 74. When the cleaning soft brush 73 moves into the garbage storage box 74, the second electric rotating rod 76 is started. The second electric rotating rod 76 drives the adhesion roller 77 to rotate to adhere and store the garbage impurities adhered to the surface of the cleaning soft brush 73, so as to avoid excessive garbage adhering to the side wall of the cleaning soft brush 73 and affecting its cleaning effect. The garbage storage box 74 and the water filter hole 75 cooperate to allow the coolant to circulate freely inside the equipment, and limit the storage of garbage impurities to avoid the impurities and the coolant from circulating together and causing harm to the equipment. Example

[0023] See also Figure 1 - Figure 8 , a method for preventing uneven refrigerant distribution in a U-tube heat exchanger, comprising the following steps: S1. The staff evenly inputs the coolant into the U-shaped tube 682 through multiple connecting delivery pipes 681 to exchange heat with the liquid inside the heat exchange tube 2; S2, start the driving motor 60, and the driving motor 60 drives the U-shaped tube 682 to rotate through the transmission shaft 61 and the sealing ring plate 57 to stir and mix the liquid inside the heat exchange tube 2; S3, start the annular slide rail 70, the annular slide rail 70 drives the cleaning soft brush 73 to move inside the U-shaped tube 682 and scrub the impurities on the inner wall thereof by connecting the vertical rod 71 and the first electric rotating rod 72, start the second electric rotating rod 76, the second electric rotating rod 76 drives the adhesion roller 77 to rotate and adhere the garbage impurities attached to the side wall of the cleaning soft brush 73; S4. When the U-shaped tube 682 needs to be repaired or replaced, the micro hydraulic cylinder 52 is started. The micro hydraulic cylinder 52 drives the U-shaped tube 682 to move out of the heat exchange tube 2 through the hydraulic rod 53, the adsorption plate 54, the second fixing ring 51 and the sealing ring plate 57. The electric slide rail 55 is started. The electric slide rail 55 drives the baffle plate 56 to move and adjust the spacing between the baffle plates 56.

[0024] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0025] During operation, the staff inputs the liquid into the heat exchange tube 2 through the liquid inlet 3. After the heat exchange in the heat exchange tube 2 is completed, the liquid is discharged through the liquid discharge port 4. The staff installs the connecting delivery pipe 681 on one side of the U-shaped tube 682 and starts the telescopic airbag 68. The telescopic airbag 68 fixes the multiple connecting delivery pipes 681 to prevent the connecting delivery pipes 681 from shaking inside the telescopic airbag 68. The staff inputs the coolant into the U-shaped tube 682 through the connecting delivery pipe 681 to cool the liquid for heat exchange. The U-shaped tube 682 is fixed inside the heat exchange tube 2 and has limited heat exchange effect on the liquid. The driving motor 60 is started. The driving motor 60 drives the U-shaped tube 682 to rotate through the transmission shaft 61 and the sealing ring plate 57 to stir the liquid inside the heat exchange tube 2, so that the heat exchange of the liquid inside the heat exchange tube 2 is more uniform, thereby improving the heat exchange efficiency of the equipment. The driving motor 60 is clamped and limited by the cooperation of the transmission shaft 61 and the limiting circular plate 62 to prevent the driving motor 60 from rotating when rotating. As the equipment works for a long time, garbage and impurities will be attached to the inside of the U-shaped tube 682. The first electric rotating rod 72 is started, and the first electric rotating rod 72 drives the cleaning soft brush 73 to rotate, and the annular slide rail 70 is started. The annular slide rail 70 drives the cleaning soft brush 73 to move inside the U-shaped tube 682 by connecting the vertical rod 71 and the first electric rotating rod 72, so as to remove the garbage and impurities inside the U-shaped tube 682, and the staff does not need to clean it. At the same time, when the annular slide rail 70 drives the cleaning soft brush 73 to move, the cleaning soft brush 73 pushes the cleaned garbage and impurities out of the tube. The cleaning brush 73 is sent to the inside of the garbage storage box 74. When the cleaning brush 73 moves to the inside of the garbage storage box 74, the second electric rotating rod 76 is started, and the second electric rotating rod 76 drives the adhesion roller 77 to rotate to adhere and store the garbage impurities adhered to the surface of the cleaning brush 73, so as to avoid excessive garbage adhering to the side wall of the cleaning brush 73 and affecting its cleaning effect. The coolant can circulate freely inside the equipment through the cooperation of the garbage storage box 74 and the water filter hole 75, and the garbage impurities are limitedly stored to avoid the impurities and the coolant from circulating together and causing harm to the equipment. The baffle plate 56 is provided to limit and block the liquid to prevent the liquid from flowing too fast inside the heat exchange tube 2 and affecting the heat exchange effect of the equipment. The electric slide rail 55 is started, and the electric slide rail 55 drives the baffle plate 56 to move to adjust the distance between the baffle plates 56. There is no need for the staff to manually adjust it. When the U-tube 682 needs to be replaced and repaired, the micro hydraulic cylinder 52 is started, and the micro hydraulic cylinder 52 is extended through the hydraulic rod 53 and the adsorption plate 54. The adsorption plate 54 is extended and drives the U-tube 682 to move away from one side of the heat exchange tube 2 through the sealing ring plate 57, and the U-tube 682 is moved out of the heat exchange tube 2, which is convenient for the staff to maintain and replace it.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for preventing uneven refrigerant distribution in a U-tube heat exchanger, comprising a support leg (1), characterized in that: The top of the support leg (1) is fixedly connected to a heat exchange cylinder (2), the top of the heat exchange cylinder (2) is connected to a liquid inlet (3), the bottom of the heat exchange cylinder (2) is connected to a liquid discharge port (4), the top of the support leg (1) is fixedly connected to a disassembly mechanism (5), one side of the disassembly mechanism (5) is fixedly connected to a refrigeration mechanism (6), the inner wall of the refrigeration mechanism (6) is fixedly connected to a cleaning mechanism (7), and the inner wall of the disassembly mechanism (5) is movably connected to the side wall of the refrigeration mechanism (6); The disassembly mechanism (5) comprises a first fixing ring (50), the side wall of the support leg (1) is fixedly connected to the bottom of the first fixing ring (50), a micro hydraulic cylinder (52) is fixedly connected to one side of the first fixing ring (50), an output end of the micro hydraulic cylinder (52) is fixedly connected to a hydraulic rod (53), one side of the hydraulic rod (53) is fixedly connected to an adsorption plate (54), one side of the adsorption plate (54) is movably connected to a second fixing ring (51), and a sealing ring plate (57) is rotatably connected to the bottom of the second fixing ring (51); The refrigeration mechanism (6) further comprises a sealing cover (65), the other side of the sealing ring plate (57) being movably connected to one side of the sealing cover (65), the inner wall of the sealing cover (65) being rotatably connected to a rotating ring (64), one side of the rotating ring (64) being connected to a coolant outlet pipe (67), one side of the rotating ring (64) being connected to a coolant inlet pipe (66), the inner wall of the coolant inlet pipe (66) being fixedly connected to a telescopic airbag (68), the inner wall of the telescopic airbag (68) being movably connected to a connecting delivery pipe (681), one side of the connecting delivery pipe (681) being connected to a U-shaped pipe (682), and the other side of the sealing ring plate (57) being fixedly connected to a coolant storage bin (69); The cleaning mechanism (7) comprises an annular slide rail (70), the inner wall of the U-shaped tube (682) being fixedly connected to the annular slide rail (70), the annular slide rail (70) being slidably connected to a connecting vertical rod (71) via an electronic slider, a first electric rotating rod (72) being fixedly connected to one side of the connecting vertical rod (71), and a cleaning soft brush (73) being fixedly connected to the side wall of the first electric rotating rod (72).

2. The device for preventing uneven refrigerant distribution in a U-tube heat exchanger according to claim 1, characterized in that: The disassembly mechanism (5) further comprises an electric slide rail (55), the side wall of the electric slide rail (55) being movably connected to the inner wall of the heat exchange cylinder (2), and the electric slide rail (55) being slidably connected to a baffle plate (56) via an electronic slider.

3. The device for preventing uneven refrigerant distribution in a U-tube heat exchanger according to claim 2, characterized in that: The side wall of the baffle plate (56) is movably connected to the inner wall of the heat exchange cylinder (2), the side wall of the hydraulic rod (53) is fixedly connected to the inner wall of the first fixed ring (50), one side of the heat exchange cylinder (2) is movably connected to the other side of the sealing ring plate (57), and one side of the electric slide rail (55) is fixedly connected to the other side of the sealing ring plate (57).

4. The device for preventing uneven refrigerant distribution in a U-tube heat exchanger according to claim 1, characterized in that: The refrigeration mechanism (6) further comprises a limiting round rod (63), the other side of the sealing cover (65) is fixedly connected to the limiting round rod (63), one side of the limiting round rod (63) is fixedly connected to a limiting circular plate (62), one side of the limiting circular plate (62) is fixedly connected to a driving motor (60), and the driving motor (60) is fixedly connected to a transmission shaft (61) via an output end.

5. The device for preventing uneven refrigerant distribution in a U-tube heat exchanger according to claim 4, characterized in that: One side of the transmission shaft (61) is fixedly connected to the other side of the sealing ring plate (57), the transmission shaft (61) passes through the sealing cover (65), the other side of the coolant storage bin (69) is slidably connected to the inner wall of the sealing cover (65), and the bottom of the second fixing ring (51) is fixedly connected to the side wall of the sealing cover (65).

6. The device for preventing uneven refrigerant distribution in a U-tube heat exchanger according to claim 1, characterized in that: The cleaning mechanism (7) further comprises a garbage storage box (74); the other side of the U-shaped tube (682) is in communication with a side wall of the garbage storage box (74); a water filter hole (75) is provided on the inner wall of the garbage storage box (74); a second electric rotating rod (76) is fixedly connected to the inner wall of the garbage storage box (74); and an adhesive roller (77) is fixedly connected to the side wall of the second electric rotating rod (76).

7. The device for preventing uneven refrigerant distribution in a U-tube heat exchanger according to claim 6, characterized in that: The side wall of the second electric rotating rod (76) is movably connected to the side wall of the cleaning soft brush (73), and the side wall of the cleaning soft brush (73) is slidably connected to the inner wall of the U-shaped tube (682).

8. A method for preventing uneven refrigerant distribution in a U-tube heat exchanger, applied to a device for preventing uneven refrigerant distribution in a U-tube heat exchanger as claimed in claims 1 to 7, characterized in that: The following steps are involved: S1. A staff member uniformly inputs the coolant into the interior of the U-shaped tube (682) through a plurality of connecting delivery pipes (681) to exchange heat with the liquid inside the heat exchange tube (2); S2, starting the driving motor (60), the driving motor (60) drives the U-shaped tube (682) to rotate through the transmission shaft (61) and the sealing ring plate (57) to stir and mix the liquid inside the heat exchange tube (2); S3, starting the annular slide rail (70), the annular slide rail (70) drives the cleaning soft brush (73) to move inside the U-shaped tube (682) and scrub the impurities on the inner wall thereof by connecting the vertical rod (71) and the first electric rotating rod (72), starting the second electric rotating rod (76), and the second electric rotating rod (76) drives the adhesion roller (77) to rotate and adhere the garbage impurities attached to the side wall of the cleaning soft brush (73); S4. When the U-shaped tube (682) needs to be repaired or replaced, the micro hydraulic cylinder (52) is started. The micro hydraulic cylinder (52) drives the U-shaped tube (682) to move out of the heat exchange tube (2) through the hydraulic rod (53), the adsorption plate (54), the second fixing ring (51) and the sealing ring plate (57). The electric slide rail (55) is started. The electric slide rail (55) drives the baffle plate (56) to move and adjust the spacing between the baffle plates (56).

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