A rapid detection and automatic lifting equipment for heat exchanger air tightness

Abstract

The present invention discloses a heat exchanger air tightness rapid detection and automatic hoisting integrated equipment, which relates to the field of heat exchanger air tightness detection technology, specifically a base plate, an inflation mechanism, a clamping mechanism, a fixing mechanism and a lifting mechanism, wherein the interior of the base plate is equidistantly penetrated with slide grooves, the outer sides of the connecting hinges are connected with rotating plates, the inflation mechanism is slidably installed above the rotating plate through a placement groove, the clamping mechanism is arranged between two adjacent inflation mechanisms, both sides below the base plate are slidably installed with slide plates, the fixing mechanism is arranged above the slide plate, and the lifting mechanism is assembled with the slide plate through lifting ears. The heat exchanger air tightness rapid detection and automatic hoisting integrated equipment can be used in conjunction with an automatic lifting truss, and there is no need to manually carry the heat exchanger. The heat exchanger is placed stably and can also be put into water stably. The heat exchanger inflation connection is quick and convenient, the inflation operation is simple and convenient, and the air tightness detection effect is good and very accurate.

Description

Technical Field

[0001] The invention relates to the technical field of air tightness detection of heat exchangers, and in particular to a rapid detection and automatic hoisting integrated equipment for air tightness of heat exchangers. Background Art

[0002] The air tightness of the heat exchanger is crucial to the quality of the heat exchanger product. A good heat exchanger should have high air tightness. The air tightness detection method of the heat exchanger is generally simple, and immersion detection is mostly used, that is, the heat exchanger is placed in a water pool, and air is inflated into the heat exchanger. The air tightness of the heat exchanger is tested by the presence or absence of bubbles, the frequency of bubble generation and the location of bubble generation.

[0003] The air tightness detection method of the heat exchanger is simple, mostly manual operation, and human intervention is relatively high.

[0004] The existing air tightness detection method for heat exchangers requires manual handling when testing the heat exchanger, which can easily cause damage to the heat exchanger. Moreover, when the heat exchanger is put into water, if the whole is skewed, it is difficult for the inflation equipment to be fully docked, which will cause certain interference to the air tightness detection and judgment of the heat exchanger. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an integrated device for rapid detection and automatic lifting of the air tightness of a heat exchanger, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a rapid detection and automatic lifting integrated equipment for the air tightness of a heat exchanger, including a base plate, an inflation mechanism, a clamping mechanism, a fixing mechanism and a lifting mechanism, wherein the interior of the base plate is equidistantly penetrated with sliding grooves, and the front and rear sides of the base plate are screwed with connecting hinges, the outer sides of the connecting hinges are connected to a rotating plate, and the upper surface of the rotating plate is provided with a placement groove, the inflation mechanism is slidably installed above the rotating plate through the placement groove, the clamping mechanism is arranged between two adjacent inflation mechanisms, and the clamping mechanisms are fixed on the rotating plate, slide plates are slidably installed on both sides of the bottom of the base plate, and ears are fixed at the two corners of one end of the slide plate extending out of the base plate, the fixing mechanism is arranged above the slide plate, and the lifting mechanism is assembled with the slide plate through the ears.

[0007] Optionally, the inflation mechanism consists of a cylinder, a pneumatic rod, a flat plate, a conical tube and an air injection circular tube, the cylinders are fixed on the outer edge of the rotating plate at equal distances, and the output ends of the cylinders are connected to the pneumatic rods, the ends of the pneumatic rods are connected to the flat plate, and the conical tubes are fixed on the upper surface of the flat plate, and the ends of the conical tubes are fixed to the air injection circular tubes.

[0008] Optionally, the flat plates correspond to the positions of the placement grooves respectively, and the lower surface structure of the flat plate matches the dimensions of the placement grooves to form a sliding structure.

[0009] Optionally, the clamping mechanism consists of a fixed disc, a rubber air tube and a rubber suction cup, the bottom surface of the fixed disc is fixed to the upper surface of the rotating plate, and a rubber air tube is bonded to the center of the upper surface of the fixed disc, and the ends of the rubber air tube are connected to rubber suction cups.

[0010] Optionally, the fixing mechanism is composed of a support plate, a fixed block, a chassis and a fixed tray. The support plate and the slide plate are parallel to each other, and a fixed block is fixedly connected between the support plate and the slide plate. The positions of the fixed block and the slide groove correspond one to one, and the sizes of the fixed block and the slide groove match to form a sliding structure. The chassis are fixed at both ends of the upper surface of the support plate, and a fixed tray is arranged above the chassis.

[0011] Optionally, an embedding groove is provided on the edge of the upper surface of the chassis, and the bottom of the fixed tray is embedded in the embedding groove, a fixed suction cup is provided at the center of the upper surface of the fixed tray, and an air bag is fixed around the edge of the upper surface of the fixed tray.

[0012] Optionally, support rods extend from both sides of the front end of the support plate, and the support rods are in an "L" shape. A rotating rod is installed at the center of the top end of the support rod, and an air pressure sensor is fixed to the top end of the rotating rod.

[0013] Optionally, the lifting mechanism consists of a spring telescopic rod, a hanging plate, a spring and a foot plate, the spring telescopic rod passes through the central circular holes of the lifting ears respectively, and the top ends of the two spring telescopic rods are connected to a hanging plate, and the inside of the hanging plate is equidistantly provided with hanging holes.

[0014] Optionally, a spring is sleeved on an outer portion of a section of the spring telescopic rod below the lifting ear, and a foot plate is connected to a bottom end of a section of the spring telescopic rod below the lifting ear.

[0015] The present invention provides a rapid detection and automatic lifting integrated device for the air tightness of a heat exchanger, which has the following beneficial effects:

[0016] 1. The heat exchanger's air tightness rapid detection and automatic lifting integrated equipment, the cylinder uses the pneumatic telescopic control of the pneumatic rod to move and adjust the position of the plate, so that the plate can carry the conical tube and the gas injection tube to move on the rotating plate, so as to move the tube mouth of the gas injection tube to the air inlet of the current heat exchanger on the substrate, avoiding the need to move and adjust the heat exchanger, and also improving the adaptability of the equipment, making it easier to use the equipment.

[0017] 2. The integrated equipment for rapid detection and automatic lifting of the air tightness of the heat exchanger presses the two sides of the heat exchanger through the clamping mechanism to fix the heat exchanger front and back. The rubber suction cup uses the suction ability of the front and rear side walls of the heat exchanger to make the rotating plate as close to the front and rear side walls of the heat exchanger as possible, thereby ensuring stable connection between the gas injection pipe and the air inlet of the heat exchanger. The rubber air pipe is connected to the rubber suction cup. The purpose of this structural design is to use air to be drawn from the outer end of the rubber air pipe to reduce the air pressure in the rubber air pipe, thereby making the rubber suction cup contact more closely with the front and rear side walls of the heat exchanger to ensure the inflation effect.

[0018] 3. The integrated equipment for rapid detection and automatic lifting of the air tightness of the heat exchanger supports and fixes the bottom of the heat exchanger through a fixing mechanism, so that the heat exchanger is stably supported and fixed on the slide plate. At the same time, the slide plate can slide along the direction of the base plate, so the position of the fixing mechanism on the base plate can be adjusted to make it more suitable for the fixed use of the heat exchanger. The design of the embedded groove allows a certain degree of mobility between the chassis and the fixed tray, and the two are easy to disassemble and can move relative to each other. The fixed suction cup is used to fix the bottom of the heat exchanger, and the air bag is used to provide buffer protection for the heat exchanger. The air bag can form a small gap between the bottom surface of the heat exchanger and the upper surface of the fixed tray, which is conducive to the rapid detachment of the heat exchanger after the inspection is completed.

[0019] 4. The integrated equipment for rapid detection and automatic lifting of the air tightness of the heat exchanger can adjust the length of the support rod extending from the front end of the support plate to suit heat exchangers of different sizes, and the support rod can be bent and turned to move the air pressure sensor to a suitable docking position on the heat exchanger. At the same time, the air pressure sensor can be rotated and changed direction on the support rod by using the function of the rotating rod, so as to better achieve docking with the air port of the heat exchanger. The air pressure sensor is used to reflect the change of air pressure in the heat exchanger and compare it with the air intake. It can be very accurately determined whether there is a leakage problem in the heat exchanger, and the leakage amount can be directly obtained. Combined with the generation of underwater bubbles, the leakage position of the heat exchanger can be quickly determined. The whole process does not rely on the experience of workers, and the detection results are more accurate.

[0020] 5. The heat exchanger is an integrated device for rapid detection of air tightness and automatic lifting. The lifting mechanism serves as the lifting arm of the equipment to assist in the connection between the equipment and the lifting truss. At the same time, the lifting mechanism has very good buffering and seismic isolation effects. The spring telescopic rod has elastic telescopic ability, and a spring is additionally provided at the bottom of the spring telescopic rod, so that there is good elastic buffering performance between the foot plate and the slide plate, which can effectively prevent the equipment from being damaged due to the heavy weight of some heat exchangers. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the inflation mechanism of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the clamping mechanism of the present invention;

[0024] Figure 4 It is a schematic diagram of the overall structure of the fixing mechanism and the lifting mechanism of the present invention;

[0025] Figure 5 It is a schematic diagram of the fixing mechanism structure of the present invention.

[0026] In the figure: 1. base plate; 2. slide groove; 3. connecting hinge; 4. rotating plate; 5. placement groove; 6. inflation mechanism; 7. cylinder; 8. pneumatic rod; 9. flat plate; 10. conical tube; 11. gas injection tube; 12. clamping mechanism; 13. fixed disc; 14. rubber air tube; 15. rubber suction cup; 16. slide plate; 17. lifting ear; 18. fixing mechanism; 19. support plate; 20. fixing block; 21. chassis; 22. embedded groove; 23. fixed tray; 24. fixed suction cup; 25. air bag; 26. support rod; 27. rotating rod; 28. air pressure sensor; 29. ​​lifting mechanism; 30. spring telescopic rod; 31. hanging plate; 32. hanging hole; 33. spring; 34. foot plate. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] See also Figures 1 to 5 The present invention provides a technical solution: a rapid detection and automatic lifting integrated equipment for air tightness of a heat exchanger, comprising a base plate 1, an inflation mechanism 6, a clamping mechanism 12, a fixing mechanism 18 and a lifting mechanism 29, wherein the interior of the base plate 1 is equidistantly penetrated with a slide groove 2, and the front and rear sides of the base plate 1 are both screwed with a connecting hinge 3, the outer sides of the connecting hinge 3 are both connected with a rotating plate 4, and the upper surface of the rotating plate 4 is provided with a placement groove 5, the inflation mechanism 6 is slidably installed above the rotating plate 4 through the placement groove 5, the inflation mechanism 6 is composed of a cylinder 7, a pneumatic rod 8, a flat plate 9, a conical tube 10 and a gas injection circular tube 11, the cylinder 7 is equidistantly fixed on the outer edge of the rotating plate 4, and the output end of the cylinder 7 is connected with a pneumatic rod 8, the end of the pneumatic rod 8 is connected with a flat plate 9, and the upper surface of the flat plate 9 is fixed with a conical tube 10, the conical tube 1 0 are fixed with gas injection tubes 11 at the ends. The cylinder 7 uses the pneumatic telescopic control of the pneumatic rod 8 to move and adjust the position of the flat plate 9, so that the flat plate 9 can carry the conical tube 10 and the gas injection tube 11 to move on the rotating plate 4, so as to move the nozzle of the gas injection tube 11 to the air inlet of the heat exchanger currently placed on the base plate 1, avoiding the movement and adjustment of the heat exchanger, and also improving the adaptability of the equipment, which is convenient for the use of the equipment. The flat plate 9 corresponds to the position between the placement grooves 5 respectively, and the lower surface structure of the flat plate 9 is consistent with the size of the placement grooves 5 to form a sliding structure. The flat plate 9 is stuck in the placement groove 5 and can only move along the placement groove 5. In this way, when the flat plate 9 moves back and forth, the gas injection tube 11 on it will not deviate and shake, and the structure is more stable, and the cylinder 7 and the pneumatic rod 8 are protected.

[0031] The clamping mechanism 12 is arranged between two adjacent inflatable mechanisms 6, and the clamping mechanisms 12 are all fixed on the rotating plate 4. The clamping mechanism 12 is composed of a fixed disc 13, a rubber air tube 14 and a rubber suction cup 15. The bottom surface of the fixed disc 13 is fixed to the upper surface of the rotating plate 4, and the rubber air tube 14 is bonded to the center of the upper surface of the fixed disc 13. The ends of the rubber air tube 14 are connected to the rubber suction cup 15. The clamping mechanism 12 is used to press the two sides of the heat exchanger to fix the heat exchanger front and back. The rubber suction cup 15 is used to tighten the front and rear side walls of the heat exchanger, so that the rotating plate 4 can be as close to the front and rear side walls of the heat exchanger as possible, thereby ensuring stable communication between the gas injection tube 11 and the air inlet of the heat exchanger. The rubber air tube 14 is connected to the rubber suction cup 15. The purpose of this structural design is to reduce the air pressure in the rubber air tube 14 by extracting air from the outer end of the rubber air tube 14, thereby making the rubber suction cup 15 more closely contact with the front and rear side walls of the heat exchanger to ensure the inflation effect.

[0032] Slide plates 16 are slidably mounted on both sides of the bottom of the base plate 1, and the two corners of the end of the slide plate 16 extending out of the base plate 1 are fixed with ears 17. The fixing mechanism 18 is arranged above the slide plate 16. The fixing mechanism 18 is composed of a support plate 19, a fixing block 20, a chassis 21 and a fixing tray 23. The support plate 19 and the slide plate 16 are parallel to each other, and a fixing block 20 is fixedly connected between the support plate 19 and the slide plate 16. The positions of the fixing block 20 and the slide groove 2 correspond one to one, and the sizes of the fixing block 20 and the slide groove 2 are matched to form a sliding structure. The chassis 21 is fixed at both ends of the upper surface of the support plate 19, and the fixing tray 23 is arranged above the chassis 21. The fixing mechanism 18 is used to hold and fix the bottom of the heat exchanger, so that the heat exchanger is stably supported and fixed on the slide plate 16, and the slide plate 16 can be moved along the base plate 1 direction sliding, so the position of the fixing mechanism 18 on the base plate 1 can be adjusted to make it more suitable for fixing the heat exchanger. The upper surface edge of the chassis 21 is provided with an embedding groove 22, and the bottom of the fixed tray 23 is embedded in the embedding groove 22. The center of the upper surface of the fixed tray 23 is provided with a fixed suction cup 24, and the upper surface edge of the fixed tray 23 is surrounded and fixed with an air bag 25. The design of the embedding groove 22 allows a certain degree of mobility between the chassis 21 and the fixed tray 23, and the two are easy to disassemble and can move relative to each other. The fixed suction cup 24 is used to fix the bottom of the heat exchanger, and the air bag 25 is used to provide buffer protection for the heat exchanger. The air bag 25 can form a small distance gap between the bottom surface of the heat exchanger and the upper surface of the fixed tray 23, which is helpful for the rapid separation of the heat exchanger after the detection is completed;

[0033] Support rods 26 are extended from both sides of the front end of the support plate 19, and the support rods 26 are in an "L"-shaped structure. A rotating rod 27 is installed at the center of the top of the support rod 26, and an air pressure sensor 28 is fixed to the top of the rotating rod 27. The length of the support rod 26 extending from the front end of the support plate 19 can be adjusted to be suitable for heat exchangers of different sizes. The support rod 26 is made of rubber and can be bent and turned to move the air pressure sensor 28 to a suitable docking position on the heat exchanger. At the same time, the air pressure sensor 28 can rotate and change direction on the support rod 26 by using the function of the rotating rod 27, so as to better achieve docking with the air port of the heat exchanger. When the heat exchanger is sunk underwater and air is filled into the heat exchanger, the air pressure sensor 28 is used to reflect the air pressure change in the heat exchanger and compare it with the air intake. In this way, it is possible to extremely accurately determine whether there is a leakage problem in the heat exchanger, and the leakage amount can be directly obtained. Combined with the generation of underwater bubbles, the leakage position of the heat exchanger can be quickly determined. The whole process does not rely on the experience of workers, and the detection result is more accurate.

[0034] The lifting mechanism 29 is assembled with the slide plate 16 through the lifting ear 17. The lifting mechanism 29 is composed of a spring telescopic rod 30, a hanging plate 31, a spring 33 and a foot plate 34. The spring telescopic rod 30 passes through the central circular hole of the lifting ear 17 respectively, and the top of the two spring telescopic rods 30 is connected with the hanging plate 31, and the inside of the hanging plate 31 is equidistantly penetrated with hanging holes 32. The outer part of the spring telescopic rod 30 located below the lifting ear 17 is sleeved with a spring 33, and the bottom end of the spring telescopic rod 30 located below the lifting ear 17 is connected with the foot plate 34. The lifting mechanism 29 serves as the lifting arm of the equipment, which is used to assist the connection between the equipment and the lifting truss. At the same time, the lifting mechanism 29 has a very good buffering and seismic isolation effect, wherein the spring telescopic rod 30 has elastic telescopic ability, and a spring 33 is additionally provided at the bottom of the spring telescopic rod 30, so that there is good elastic buffering performance between the foot plate 34 and the slide plate 16, thereby effectively avoiding the damage of the equipment due to the large dead weight of some heat exchangers.

[0035] In summary, when using the integrated equipment for rapid detection and automatic lifting of the air tightness of the heat exchanger, first use the lifting hole 32 to fix the hanging plate 31 to the lifting truss, then adjust the position of the fixing mechanism 18 on the slide plate 16 according to the actual size of the heat exchanger, move the fixing mechanism 18 to the best position, pull the support rod 26 out of the support plate 19, and bend the support rod 26 so that the air pressure sensor 28 (OMEGA's PX190 series) at the end of the support rod 26 corresponds to the air outlet of the heat exchanger, and use a sealing ring to seal the air pressure sensor 28 into the air outlet of the heat exchanger, and then move the front and rear two rotating plates 4 close to the front and rear side walls of the heat exchanger. , start the cylinder 7 to extend and retract the pneumatic rod 8, and the flat plate 9 moves immediately until the conical tube 10 and the gas injection tube 11 thereon are aligned with the air inlet position of the heat exchanger and the docking is completed, and the front and rear two rotating plates 4 are continued to be moved closer to the front and rear side walls of the heat exchanger. The gas injection tube 11 and the air inlet of the heat exchanger are in a tightly docked state at this time, and then air can be pumped from the outer end of the rubber air tube 14 to reduce the air pressure in the rubber air tube 14, so that the rubber suction cup 15 is more tightly in contact with the front and rear side walls of the heat exchanger. In this way, the two rotating plates 4 are respectively close to the front and rear side walls of the heat exchanger, and the bottom of the heat exchanger will also be sucked tightly with the fixed tray 23, and the inflation work can be carried out smoothly;

[0036] The lifting truss lowers the equipment together with the fixed heat exchanger into the water pool. When the water completely covers the heat exchanger, air can be inflated into the heat exchanger through the conical tube 10 and the air injection tube 11. After the air flow is inflated into the heat exchanger, the air pressure in the heat exchanger cavity changes. At this time, the air pressure sensor 28 will reflect the change of air pressure in the heat exchanger cavity. By combining the air pressure change with the formation of water bubbles, it is accurately known whether there is a leakage problem in the heat exchanger, the amount of leakage and the leakage location.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rapid detection and automated lifting device for the air tightness of a heat exchanger, comprising a base plate (1), an air filling mechanism (6), a clamping mechanism (12), a fixing mechanism (18) and a lifting mechanism (29), characterized in that: The interior of the base plate (1) is provided with sliding grooves (2) at equal intervals, and the front and rear sides of the base plate (1) are both connected to connecting hinges (3) by screws, the outer sides of the connecting hinges (3) are both connected to a rotating plate (4), and the upper surface of the rotating plate (4) is provided with a placement groove (5), the inflation mechanism (6) is slidably mounted above the rotating plate (4) through the placement groove (5), the clamping mechanism (12) is arranged between two adjacent inflation mechanisms (6), and the clamping mechanism (12) is fixed on the rotating plate (4), the lower sides of the base plate (1) are both slidably mounted with slide plates (16), and the two corners of one end of the slide plate (16) extending out of the base plate (1) are fixed with lifting ears (17), the fixing mechanism (18) is arranged above the slide plate (16), and the lifting mechanism (29) is assembled with the slide plate (16) through the lifting ears (17); The clamping mechanism (12) is composed of a fixed disc (13), a rubber air tube (14) and a rubber suction cup (15); the bottom surface of the fixed disc (13) is fixed to the upper surface of the rotating plate (4), and the rubber air tube (14) is bonded to the center of the upper surface of the fixed disc (13); the ends of the rubber air tube (14) are connected to the rubber suction cup (15); the clamping mechanism (12) is used to press the two sides of the heat exchanger to fix the heat exchanger front and back; the rubber suction cup (15) uses the suction ability of the front and rear side walls of the heat exchanger to make the rotating plate (4) close to the front and rear side walls of the heat exchanger, thereby ensuring stable communication between the gas injection tube (11) and the air inlet of the heat exchanger; The inflation mechanism (6) is composed of a cylinder (7), a pneumatic rod (8), a flat plate (9), a conical tube (10) and a gas injection tube (11); the cylinder (7) is fixed at equal distances on the outer edge of the rotating plate (4), and the output ends of the cylinders (7) are connected to the pneumatic rods (8), the ends of the pneumatic rods (8) are connected to the flat plate (9), and the conical tube (10) is fixed to the upper surface of the flat plate (9), and the ends of the conical tubes (10) are fixed to the gas injection tubes (11).

2. The rapid detection and automatic lifting equipment for air tightness of a heat exchanger according to claim 1 is characterized by: The flat plates (9) correspond to the positions of the placement grooves (5) respectively, and the lower surface structure of the flat plate (9) matches the dimensions of the placement grooves (5) to form a sliding structure.

3. The rapid detection and automatic lifting equipment for air tightness of a heat exchanger according to claim 1 is characterized by: The fixing mechanism (18) is composed of a support plate (19), a fixing block (20), a chassis (21) and a fixing tray (23); the support plate (19) and the slide plate (16) are parallel to each other, and a fixing block (20) is fixedly connected between the support plate (19) and the slide plate (16); the positions of the fixing block (20) and the slide groove (2) correspond one to one, and the sizes of the fixing block (20) and the slide groove (2) match to form a sliding structure; chassis (21) are fixed to both ends of the upper surface of the support plate (19), and a fixing tray (23) is arranged above the chassis (21).

4. The rapid detection and automatic lifting equipment for air tightness of a heat exchanger according to claim 3 is characterized by: The upper surface edge of the chassis (21) is provided with an embedding groove (22), and the bottom of the fixed tray (23) is embedded in the embedding groove (22). A fixed suction cup (24) is provided at the center of the upper surface of the fixed tray (23), and an air bag (25) is fixed around the edge of the upper surface of the fixed tray (23).

5. The rapid detection and automatic lifting equipment for air tightness of a heat exchanger according to claim 3 is characterized by: Support rods (26) extend from both sides of the front end of the support plate (19), and the support rods (26) are in an "L"-shaped structure. A rotating rod (27) is mounted at the center of the top end of the support rod (26), and an air pressure sensor (28) is fixed to the top end of the rotating rod (27).

6. The rapid detection and automatic lifting equipment for air tightness of a heat exchanger according to claim 1 is characterized by: The lifting mechanism (29) is composed of a spring telescopic rod (30), a hanging plate (31), a spring (33) and a foot plate (34); the spring telescopic rod (30) passes through the central circular hole of the hanging ear (17), and the top end of two spring telescopic rods (30) is connected to a hanging plate (31); and the inside of the hanging plate (31) is equidistantly penetrated with hanging holes (32).

7. The rapid detection and automatic lifting equipment for air tightness of a heat exchanger according to claim 6 is characterized by: A spring (33) is sleeved on the outer portion of a section of the spring telescopic rod (30) located below the lifting ear (17), and a foot plate (34) is connected to the bottom end of a section of the spring telescopic rod (30) located below the lifting ear (17).

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