Leakage detection device for leakage detection of heat exchange tubes, and use method

Abstract

The present application relates to the technical field of heat exchangers. Disclosed are a leakage detection device for leakage detection of heat exchange tubes, and a use method. The leakage detection device comprises a foam liquid tank, an automatic discharge mechanism being provided on the foam liquid tank; the automatic discharge mechanism comprises a triangular support plate fixedly mounted on the right side of the foam liquid tank, a discharge tank being fixedly mounted on the top of the triangular support plate, and a chute being provided in the discharge tank. The leakage detection device further comprises: a plurality of heat exchange tubes provided in the chute, a rectangular frame is slidably mounted on the discharge tank, and two discharge springs are fixedly mounted on the inner wall of the top of the rectangular frame, the bottom ends of the two discharge springs being fixedly connected to the discharge tank, and a first baffle being fixedly mounted on the inner wall of the top of the rectangular frame. In the present application, the heat exchange tubes will remain in a classification tank during rolling, and if there is no bubble trace on the heat exchange tubes, the heat exchange tubes will directly roll into a classification recess for collection, thereby not only achieving the effect of leakage detection, but also classifying leaking heat exchange tubes and intact heat exchange tubes.

Description

A leak detection device for heat exchanger tube leak detection and its usage method

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411037379.3, filed on July 31, 2024, entitled "A Leak Detection Device and Method for Using Heat Exchanger Tubes", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the technical field of heat exchanger equipment, specifically to a leak detection device and its usage method for leak detection of heat exchanger tubes. Background Technology

[0004] The current development trend of heat exchangers is towards large size, high efficiency, and compactness, with large heat exchange area and long heat exchange tubes. However, due to the limited manufacturing capabilities of heat exchanger manufacturers, many heat exchange tubes often need to be spliced ​​together. This is applicable to high-pressure applications, toxic media, and flammable and explosive environments.

[0005] Leak testing is required when the heat exchange tubes are manufactured in the factory. Leak testing is also called sealing testing. Common sealing tests require manual labor, which involves placing the air-filled heat exchange tubes into water to check for air bubbles. This kind of testing is not only time-consuming and labor-intensive, but also inefficient. Summary of the Invention

[0006] The purpose of this application is to provide a leak detection device and method for detecting leaks in heat exchange tubes, in order to solve the problem that common sealing tests require manual operation, which involves placing the air-filled heat exchange tubes into water to check for air bubbles. Such testing is not only time-consuming and labor-intensive, but also inefficient.

[0007] To solve the above-mentioned technical problems, this application provides the following technical solution:

[0008] This application relates to a leak detection device for heat exchanger tube leak detection, comprising a foam liquid tank, an automatic dispensing mechanism on the foam liquid tank, the automatic dispensing mechanism including a triangular support plate fixedly installed on the right side of the foam liquid tank, a dispensing box fixedly installed on the top of the triangular support plate, and an inclined groove opened inside the dispensing box, and further comprising:

[0009] Several heat exchange tubes are arranged in the inclined groove. A rectangular frame is slidably installed on the discharge box. Two discharge springs are fixedly installed on the top inner wall of the rectangular frame. The bottom ends of the two discharge springs are fixedly connected to the discharge box. A baffle is fixedly installed on the top inner wall of the rectangular frame. The bottom of the baffle extends into the discharge box. A baffle is fixedly installed on the bottom inner wall of the rectangular frame. The top of the baffle extends into the inclined groove. The baffle contacts the corresponding inclined groove. A discharge plate is fixedly installed on the left side of the discharge box. A circular plate is arranged above the foam liquid tank. Several arc-shaped fixing plates are fixedly installed on the front of the circular plate. Contact blocks are fixedly installed on the outer walls of the arc-shaped fixing plates respectively.

[0010] Optionally, the foam liquid tank is provided with a driving mechanism, which includes mounting plates fixedly installed on the front and back of the foam liquid tank respectively. A drive motor is fixedly installed on the front of the corresponding mounting plate. A hollow rotating shaft is rotatably installed on the two mounting plates. The hollow rotating shaft passes through the two mounting plates. The front end of the hollow rotating shaft is fixedly connected to the output shaft of the drive motor. The hollow rotating shaft passes through a circular plate and is fixedly connected to the circular plate. A second circular plate is provided above the foam liquid tank.

[0011] Optionally, a plurality of fixing mechanisms are provided on the side of the circular plate and the second circular plate that are close to each other. The fixing mechanism includes hollow telescopic cylinders that are fixedly installed on the side of the second circular plate and the second circular plate that are close to each other. Rubber fixing plates are fixedly installed on the ends of the two hollow telescopic cylinders that are close to each other. Fixing springs are respectively sleeved on the two hollow telescopic cylinders. The ends of the two fixing springs that are close to each other are fixedly connected to the two rubber fixing plates. The ends of the two fixing springs that are close to each other are fixedly connected to the second circular plate and the second circular plate.

[0012] Optionally, each of the corresponding hollow telescopic cylinders is provided with an adaptation mechanism. The adaptation mechanism includes a round rod slidably installed inside the hollow telescopic cylinder near the circular plate. The end of the round rod extends outside the hollow telescopic cylinder and is slidably connected to the hollow telescopic cylinder. A T-shaped arc groove is formed on the outer wall of the corresponding hollow telescopic cylinder. A T-shaped arc block is fixedly installed at the top of the round rod. The T-shaped arc block is slidably connected to the T-shaped arc groove. An adaptation spring is sleeved on the round rod. The end of the adaptation spring is fixedly connected to the inner wall of the hollow telescopic cylinder near the circular plate. The top of the adaptation spring is fixedly connected to the inner wall of the T-shaped arc block. A contact rod is fixedly installed on the outer wall of the T-shaped arc block. The top of the contact rod extends outside the hollow telescopic cylinder. An L-shaped round rod is fixedly installed on the top of the foam liquid tank.

[0013] Optionally, an extrusion mechanism is provided on the hollow rotating shaft, and a rotating cylinder is rotatably sleeved on the extrusion mechanism. The outer wall of the rotating cylinder is rotatably connected to the second circular plate. An L-shaped plate is fixedly installed on the top of the foam liquid tank. The L-shaped plate passes through the second circular plate and is fixedly connected to the second circular plate. An L-shaped hollow block is fixedly installed on the top of the L-shaped plate. An extrusion spring is fixedly installed inside the L-shaped hollow block. An extrusion block is fixedly installed on the left end of the extrusion spring. The left end of the extrusion block extends into the arc-shaped fixed plate.

[0014] Optionally, an inflation mechanism is provided on the back of the foam liquid tank. The inflation mechanism includes an air compressor fixedly installed on the back of the foam liquid tank. An air outlet pipe is fixedly installed on the top of the air compressor. An air inlet box is fixedly installed on the back of the corresponding mounting plate. The top end of the air outlet pipe is fixedly connected to the air inlet box. The front of the air inlet box is rotatably connected to a hollow rotating shaft. Several L-shaped air inlet slots are provided on the hollow rotating shaft. The ends of the several L-shaped air inlet slots that are far apart from each other extend to the outside of the circular plate. The several L-shaped air inlet slots pass through several rubber fixing plates close to the circular plate.

[0015] Optionally, a sorting mechanism is provided on the left side of the foam liquid tank. The sorting mechanism includes a sorting box fixedly installed on the left side of the foam liquid tank. The sorting box has a sorting slot and an installation slot. A sorting electric telescopic rod is fixedly installed on the left inner wall of the installation slot. An L-shaped baffle is fixedly installed at the output end of the sorting electric telescopic rod. A sorting camera is fixedly installed inside the sorting box.

[0016] Optionally, the method of using the leak detection device for heat exchanger tube leak detection includes the following steps:

[0017] S1: First, start the drive motor. The drive motor drives the hollow shaft to rotate, which in turn drives the circular plate to rotate. The circular plate then drives several arc-shaped fixed plates, several hollow telescopic cylinders, and several rubber fixed plates to rotate. During the rotation of the arc-shaped fixed plates, the contact blocks will rotate. As the contact blocks rotate, they will contact the discharge plate and cause the discharge plate to descend. The discharge plate will then drive the rectangular frame to descend, which in turn drives baffle one and baffle two to descend. Baffle one will move into the inclined groove and block the second heat exchange tube on the left. Baffle two will descend and move out of the inclined groove. At this time, the first heat exchange tube on the left will slide out of the discharge box along the inclined groove and fall into the discharge box due to its inertia. Inside the corresponding arc-shaped fixed plate, the heat exchange tube will collide with two rubber fixed plates during its descent. The two rubber fixed plates, impacted by the weight of the heat exchange tube, will move away from each other. At this time, the heat exchange tube will contact the arc-shaped fixed plate due to gravity. The movement of the rubber fixed plates will cause the two fixed springs to compress and deform. Under the elastic force of the fixed springs, the heat exchange tube will push the two rubber fixed plates to clamp the heat exchange tube, preventing it from falling off during the rotation of the arc-shaped fixed plate. After the contact block leaves the discharge plate, the rectangular frame will resume its upward movement under the elastic force of the discharge spring. At this time, the second heat exchange tube from the left will move to the first position from the left for replenishment, facilitating the next discharge.

[0018] S2: When the drive motor starts, the air compressor starts simultaneously. The air compressor will simultaneously input air into the hollow telescopic cylinder fixed on the circular plate through the air outlet pipe, air inlet box and several L-shaped air inlet slots. The air will enter the heat exchange tube through the hollow telescopic cylinder and the L-shaped air inlet slots on the rubber fixing plate. The continuous input of air will cause the air pressure in the heat exchange tube to increase continuously. After the air pressure in the heat exchange tube increases to a certain level, the air will stop being input into the heat exchange tube. At this time, the air will push the rubber fixing plate close to the circular plate, and the rubber fixing plate will move towards the direction of the second circular plate.

[0019] S3: As the circular plate continues to rotate, it pulls the inflated heat exchange tubes into the foam liquid tank. During rotation, the heat exchange tubes are immersed in the foam liquid, which coats them completely. As the circular plate rotates, the heat exchange tubes move out of the foam liquid tank. While the rubber clamping plate, now coated with foam liquid, is rotating, the contact rod on the rubber clamping plate contacts the L-shaped circular rod. At this time, the extrusion block also contacts the heat exchange tubes. As the heat exchange tubes rotate and adjust their angle, the extrusion block slides into the L-shaped hollow block. When the extrusion spring is compressed, the contact rod, after contacting the L-shaped round rod, will slide into the hollow telescopic cylinder. The contact rod will drive the T-shaped arc block to leave the T-shaped arc groove. At this time, because the T-shaped arc block leaves the T-shaped arc groove, air is discharged from the air between the T-shaped arc block and the T-shaped arc groove, thereby reducing the air pressure in the heat exchange tube. Correspondingly, the rubber fixing plate will loosen its clamping on the heat exchange tube. Then, the extrusion block will be pushed outward under the elastic force of the extrusion spring. The extrusion block will push out the heat exchange tube clamped by the rubber fixing plate, completing the separation of the rubber fixing plate from the heat exchange tube.

[0020] S4: After detachment, the heat exchange tube will fall onto the sorting box and roll. Although the gas has been discharged, bubble focal points and foam marks will be generated on the surface of the heat exchange tube. During the rolling process, the sorting camera will check the surface of the heat exchange tube for bubble marks. If there are bubble marks, the sorting electric telescopic rod will drive the L-shaped baffle to move and close the slot in the sorting box. At this time, the heat exchange tube will remain in the sorting box during the rolling process. If there are no bubble marks on the heat exchange tube, the heat exchange tube will roll directly into the sorting slot for collection.

[0021] This application has the following beneficial effects:

[0022] (1) The leak detection device for heat exchanger tube leak detection in this application first starts the drive motor, which drives the hollow rotating shaft to rotate. The hollow rotating shaft drives the circular plate to rotate, and the circular plate drives several arc-shaped fixed plates, several hollow telescopic cylinders, and several rubber fixed plates to rotate. During the rotation of the arc-shaped fixed plates, the contact blocks will rotate. During the rotation of the contact blocks, they will contact the discharge plate and drive the discharge plate to descend. The discharge plate will drive the rectangular frame to descend, and the rectangular frame will drive baffle one and baffle two to descend. Baffle one will move into the inclined groove and block the second heat exchanger tube on the left. Baffle two will descend and move out of the inclined groove. At this time, the first heat exchanger tube on the left will slide out of the discharge box along the inclined groove. Under inertia, it will fall into the corresponding arc-shaped fixed plate. During the descent of the heat exchange tube, it will collide with two rubber fixed plates. The two rubber fixed plates, which are impacted by the weight of the heat exchange tube, will move away from each other. At this time, the heat exchange tube will contact the arc-shaped fixed plate due to gravity. The movement of the rubber fixed plates will cause the two fixed springs to compress and deform. At this time, the heat exchange tube will be pushed by the elastic force of the fixed springs to clamp the two rubber fixed plates, preventing the heat exchange tube from falling off during the rotation of the arc-shaped fixed plate. After the contact block leaves the discharge plate, the rectangular frame will rise again under the elastic force of the discharge spring. At this time, the second heat exchange tube from the left will move to the first position from the left for replenishment, which is convenient for the next discharge.

[0023] (2) The leak detection device for heat exchange tube leak detection in this application starts the air compressor at the same time when the drive motor starts. The air compressor will simultaneously input air into the hollow telescopic cylinder fixed on the circular plate through the air outlet pipe, air inlet box and several L-shaped air inlet slots. The air will enter the heat exchange tube along with the hollow telescopic cylinder and the L-shaped air inlet slots on the rubber fixing plate. The continuous input of air will cause the air pressure in the heat exchange tube to increase continuously. After the air pressure in the heat exchange tube increases to a certain level, the air will stop being input into the heat exchange tube. At this time, the air will push the rubber fixing plate close to the circular plate. The rubber fixing plate will move towards the direction of the second circular plate, thereby enhancing the clamping stability of the rubber fixing plate on the heat exchange tube.

[0024] (3) The leak detection device for heat exchanger tubes of this application, as the circular plate rotates continuously, will drive the inflated heat exchanger tubes into the foam liquid tank. During the rotation, the heat exchanger tubes will be immersed in the foam liquid in the foam liquid tank, and the foam liquid will coat the heat exchanger tubes. As the circular plate rotates, the heat exchanger tubes will move out of the foam liquid tank. When the rubber fixing plate holding the foam liquid-coated rubber fixing plate rotates, the contact rod on the rubber fixing plate will contact the L-shaped circular rod. At this time, the extrusion block will also contact the heat exchanger tubes. As the heat exchanger tubes continuously adjust their angle during rotation, the extrusion block will also move towards the L-shaped circular rod. The extrusion block slides inside the hollow block. At this time, the extrusion spring will undergo compression deformation. After contacting the L-shaped round rod, the contact rod will slide into the hollow telescopic cylinder. The contact rod will drive the T-shaped arc block to leave the T-shaped arc groove. At this time, because the T-shaped arc block leaves the T-shaped arc groove, the air is discharged from the air between the T-shaped arc block and the T-shaped arc groove, thereby reducing the air pressure in the heat exchange tube. Correspondingly, the rubber fixing plate will loosen its clamping of the heat exchange tube. Then, the extrusion block will be pushed outward under the elastic force of the extrusion spring. The extrusion block will push out the heat exchange tube clamped by the rubber fixing plate, completing the separation of the rubber fixing plate from the heat exchange tube.

[0025] (4) The leak detection device for heat exchange tube leak detection in this application will cause the heat exchange tube to fall onto the sorting box and roll after being detached. Although the gas has been discharged, bubble focal points and foam marks will be generated on the surface of the heat exchange tube. During the rolling process, the sorting camera will check the surface of the heat exchange tube for bubble marks. If there are bubble marks, the sorting electric telescopic rod will drive the L-shaped baffle to move and close the groove in the sorting box. At this time, the heat exchange tube will remain in the sorting box during the rolling process. If there are no bubble marks on the heat exchange tube, the heat exchange tube will roll directly into the sorting groove for collection. Thus, not only can the leak detection effect be achieved, but also the leaking heat exchange tube and the intact heat exchange tube can be sorted.

[0026] Of course, any product implementing this application does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the specific embodiments of this disclosure or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 is a schematic diagram of the overall structure of this application;

[0029] Figure 2 is a schematic cross-sectional view of the front part of this application;

[0030] Figure 3 is an enlarged structural diagram of A in Figure 2 of this application;

[0031] Figure 4 is a partial cross-sectional structural diagram of this application;

[0032] Figure 5 is an enlarged structural diagram of B in Figure 4 of this application;

[0033] Figure 6 is a schematic cross-sectional view of the side portion of this application;

[0034] Figure 7 is an enlarged structural schematic diagram of C in Figure 6 of this application;

[0035] Figure 8 is a schematic diagram of the method steps of this application.

[0036] The attached diagram lists the components represented by each number as follows:

[0037] In the diagram: 1. Foam liquid tank; 100. Automatic feeding mechanism; 101. Triangular support plate; 102. Feeding box; 103. Inclined chute; 104. Heat exchange tube; 105. Rectangular frame; 106. Feeding spring; 107. Baffle one; 108. Baffle two; 109. Feeding plate; 110. Circular plate; 111. Arc-shaped fixing plate; 112. Contact block; 2. Drive mechanism; 201. Mounting plate; 202. Drive motor; 203. Hollow rotating shaft; 204. Circular plate two; 3. Fixing mechanism; 301. Hollow telescopic cylinder; 302. Rubber fixing plate; 303. Fixing spring; 4. Adaptive mechanism; 401. Round rod; 402. T-shaped arc groove; 403. T-shaped arc block; 404. Adaptive spring; 405. Contact rod; 406. L-shaped round rod; 5. Extrusion mechanism; 501. Rotary drum; 502. L-shaped plate; 503. L-shaped hollow block; 504. Extrusion spring; 505. Extrusion block; 6. Inflation mechanism; 601. Air compressor; 602. Air outlet pipe; 603. Air inlet box; 604. L-shaped air inlet groove; 7. Sorting mechanism; 701. Sorting box; 702. Sorting groove; 703. Mounting groove; 704. Sorting electric telescopic rod; 705. L-shaped baffle; 706. Sorting camera. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] Please refer to Figures 1-8. This application is a leak detection device for heat exchanger tube leak detection, including a foam liquid tank 1. An automatic feeding mechanism 100 is provided on the foam liquid tank 1. The automatic feeding mechanism 100 includes a triangular support plate 101 fixedly installed on the right side of the foam liquid tank 1. A feeding box 102 is fixedly installed on the top of the triangular support plate 101. An inclined groove 103 is opened in the feeding box 102. The device also includes:

[0040] Several heat exchange tubes 104 are installed inside the inclined trough 103. A rectangular frame 105 is slidably installed on the discharge box 102. Two discharge springs 106 are fixedly installed on the top inner wall of the rectangular frame 105. The bottom ends of the two discharge springs 106 are fixedly connected to the discharge box 102. A baffle 107 is fixedly installed on the top inner wall of the rectangular frame 105. The bottom of the baffle 107 extends into the discharge box 102. A baffle 2 108 is fixedly installed on the bottom inner wall of the rectangular frame 105. The top of the baffle 2 108 extends into the inclined trough 103. The baffle 2 108 contacts the corresponding inclined trough 103. A discharge plate 109 is fixedly installed on the left side of the discharge box 102. A circular plate 110 is installed above the foam liquid tank 1. Several arc-shaped fixing plates 111 are fixedly installed on the front of the circular plate 110. Contact blocks 112 are fixedly installed on the outer walls of the several arc-shaped fixing plates 111 respectively.

[0041] As shown in Figure 1, a drive mechanism 2 is provided on the foam liquid tank 1. The drive mechanism 2 includes mounting plates 201 that are fixedly installed on the front and back of the foam liquid tank 1, respectively. A drive motor 202 is fixedly installed on the front of the corresponding mounting plate 201. A hollow rotating shaft 203 is rotatably installed on the two mounting plates 201. The hollow rotating shaft 203 passes through the two mounting plates 201. The front end of the hollow rotating shaft 203 is fixedly connected to the output shaft of the drive motor 202. The hollow rotating shaft 203 passes through the circular plate 110 and is fixedly connected to the circular plate 110. A second circular plate 204 is provided above the foam liquid tank 1.

[0042] Start the drive motor 202, which drives the hollow shaft 203 to rotate. The hollow shaft 203 drives the circular plate 110 to rotate, which in turn drives several arc-shaped fixing plates 111, several hollow telescopic cylinders 301, and several rubber fixing plates 302 to rotate. During the rotation of the arc-shaped fixing plates 111, the contact blocks 112 will rotate. During the rotation of the contact blocks 112, they will contact the feeding plate 109 and drive the feeding plate 109 to rotate. As the material discharge plate 109 descends, it will cause the rectangular frame 105 to descend. The rectangular frame 105 will cause the baffle 1 107 and the baffle 2 108 to descend. The baffle 1 107 will move into the inclined groove 103 and block the second left heat exchange tube 104. The baffle 2 108 will descend and move out of the inclined groove 103. At this time, the first left heat exchange tube 104 will slide out of the discharge box 102 along the inclined groove 103. Under the inertia of the heat exchange tube 104, it will fall into the corresponding arc-shaped fixing plate 111.

[0043] As shown in Figures 4 and 5, several fixing mechanisms 3 are provided on the side of the circular plate 110 and the circular plate 204 that are close to each other. The fixing mechanism 3 includes hollow telescopic cylinders 301 that are fixedly installed on the side of the circular plate 204 and the circular plate 110 that are close to each other. Rubber fixing plates 302 are fixedly installed on the ends of the two hollow telescopic cylinders 301 that are close to each other. Fixing springs 303 are respectively sleeved on the two hollow telescopic cylinders 301. The ends of the two fixing springs 303 that are close to each other are fixedly connected to the two rubber fixing plates 302. The ends of the two fixing springs 303 that are close to each other are fixedly connected to the circular plate 204 and the circular plate 110 respectively.

[0044] During the descent of the heat exchange tube 104, it will collide with two rubber fixing plates 302. The two rubber fixing plates 302 will move away from each other due to the impact of the gravity of the heat exchange tube 104. At this time, the heat exchange tube 104 will contact the arc-shaped fixing plate 111 due to gravity. The movement of the rubber fixing plates 302 will cause the two fixing springs 303 to compress and deform. At this time, the heat exchange tube 104 will be pushed by the elastic force of the fixing springs 303 to clamp the two rubber fixing plates 302 to prevent the heat exchange tube 104 from falling off during the rotation of the arc-shaped fixing plate 111. After the contact block 112 leaves the discharge plate 109, the rectangular frame 105 will resume rising under the elastic force of the discharge spring 106. At this time, the second heat exchange tube 104 on the left will move to the first position on the left for replenishment, which is convenient for the next discharge.

[0045] As shown in Figures 5, 6, and 8, several hollow telescopic cylinders 301 are respectively provided with an adaptation mechanism 4. The adaptation mechanism 4 includes a round rod 401 slidably installed inside the hollow telescopic cylinder 301 near the circular plate 110. The end of the round rod 401 extends to the outside of the hollow telescopic cylinder 301 and is slidably connected to the hollow telescopic cylinder 301. A T-shaped arc groove 402 is opened on the outer wall of the corresponding hollow telescopic cylinder 301. A T-shaped arc block 403 is fixedly installed at the top of the round rod 401. Block 403 is slidably connected to T-shaped arc groove 402. An adaptive spring 404 is sleeved on the round rod 401. The end of the adaptive spring 404 is fixedly connected to the inner wall of the hollow telescopic cylinder 301 near the round plate 110. The top of the adaptive spring 404 is fixedly connected to the inner wall of the T-shaped arc block 403. A contact rod 405 is fixedly installed on the outer wall of the T-shaped arc block 403. The top of the contact rod 405 extends to the outside of the hollow telescopic cylinder 301. An L-shaped round rod 406 is fixedly installed on the top of the foam liquid tank 1.

[0046] The contact rod 405 on the rubber fixing plate 302 will contact the L-shaped round rod 406. At this time, the extrusion block 505 will also contact the heat exchange tube 104. As the heat exchange tube 104 rotates and continuously adjusts its angle, the contact rod 405, after contacting the L-shaped round rod 406, will slide into the hollow telescopic cylinder 301. The contact rod 405 will drive the T-shaped arc block 403 to leave the T-shaped arc groove 402. At this time, because the T-shaped arc block 403 leaves the T-shaped arc groove 402, the air is discharged from the air between the T-shaped arc block 403 and the T-shaped arc groove 402, thereby reducing the air pressure in the heat exchange tube 104. Correspondingly, the clamping of the rubber fixing plate 302 on the heat exchange tube 104 will also loosen.

[0047] As shown in Figures 6 and 7, an extrusion mechanism 5 is provided on the hollow rotating shaft 203. A rotating cylinder 501 is rotatably sleeved on the extrusion mechanism 5. The outer wall of the rotating cylinder 501 is rotatably connected to the circular plate 204. An L-shaped plate 502 is fixedly installed on the top of the foam liquid tank 1. The L-shaped plate 502 passes through the circular plate 204 and is fixedly connected to the circular plate 204. An L-shaped hollow block 503 is fixedly installed on the top of the L-shaped plate 502. An extrusion spring 504 is fixedly installed inside the L-shaped hollow block 503. An extrusion block 505 is fixedly installed on the left end of the extrusion spring 504. The left end of the extrusion block 505 extends into the arc-shaped fixed plate 111.

[0048] The extrusion block 505 will also slide into the L-shaped hollow block 503. At this time, the extrusion spring 504 will undergo compression deformation, and the extrusion block 505 will be pushed outward under the elastic force of the extrusion spring 504. The extrusion block 505 will push out the heat exchange tube 104 held by the rubber fixing plate 302, thus completing the separation of the rubber fixing plate 302 from the heat exchange tube 104.

[0049] As shown in Figures 4 and 6, an inflation mechanism 6 is provided on the back of the foam liquid tank 1. The inflation mechanism 6 includes an air compressor 601 fixedly installed on the back of the foam liquid tank 1. An air outlet pipe 602 is fixedly installed on the top of the air compressor 601. An air inlet box 603 is fixedly installed on the back of the corresponding mounting plate 201. The top end of the air outlet pipe 602 is fixedly connected to the air inlet box 603. The front of the air inlet box 603 is rotatably connected to the hollow rotating shaft 203. Several L-shaped air inlet slots 604 are provided on the hollow rotating shaft 203. The ends of the several L-shaped air inlet slots 604 that are far apart from each other extend to the outside of the circular plate 110. The several L-shaped air inlet slots 604 respectively pass through several rubber fixing plates 302 close to the circular plate 110.

[0050] When the drive motor 202 starts, the air compressor 601 is started at the same time. The air compressor 601 will simultaneously input air into the hollow telescopic cylinder 301 fixed on the circular plate 110 through the air outlet pipe 602, the air inlet box 603 and several L-shaped air inlet slots 604.

[0051] As shown in Figure 1, a sorting mechanism 7 is provided on the left side of the foam liquid tank 1. The sorting mechanism 7 includes a sorting box 701 fixedly installed on the left side of the foam liquid tank 1. A sorting slot 702 is opened in the sorting box 701. An installation slot 703 is opened in the sorting box 701. A sorting electric telescopic rod 704 is fixedly installed on the inner left side of the installation slot 703. An L-shaped baffle 705 is fixedly installed at the output end of the sorting electric telescopic rod 704. A sorting camera 706 is fixedly installed in the sorting box 701.

[0052] After detachment, the heat exchange tube 104 falls onto the sorting box 701 and rolls. Although the gas has been discharged, bubble focal points and foam marks will appear on the surface of the heat exchange tube 104. During the rolling process, the sorting camera 706 will check the surface of the heat exchange tube 104 for bubble marks. If bubble marks are present, the sorting electric telescopic rod 704 will move the L-shaped baffle 705 to close the groove in the sorting box 701. At this time, the heat exchange tube 104 will remain in the sorting box 701 during the rolling process. If there are no bubble marks on the heat exchange tube 104, the heat exchange tube 104 will roll directly into the sorting groove 702 for collection. This not only achieves the effect of leak detection but also sorts the leaking heat exchange tube 104 from the intact heat exchange tube 104.

[0053] Figure 1-8 shows the usage method of the leak detection device for heat exchanger tube leak detection. The steps are as follows:

[0054] S1: First, start the drive motor 202. The drive motor 202 drives the hollow rotating shaft 203 to rotate, which in turn drives the circular plate 110 to rotate. The circular plate 110 drives several arc-shaped fixed plates 111, several hollow telescopic cylinders 301, and several rubber fixed plates 302 to rotate. During the rotation of the arc-shaped fixed plates 111, the contact blocks 112 will rotate. During the rotation of the contact blocks 112, they will contact the discharge plate 109 and cause the discharge plate 109 to descend. The discharge plate 109 will cause the rectangular frame 105 to descend. The rectangular frame 105 will cause the baffle 1 107 and the baffle 2 108 to descend. The baffle 1 107 will move into the inclined groove 103 and block the second left heat exchange tube 104. The baffle 2 108 will descend and move out of the inclined groove 103. At this time, the first left heat exchange tube 104 will slide out of the discharge box 102 along the inclined groove 103. Under the inertia of 104, it will fall into the corresponding arc-shaped fixed plate 111. During the descent of the heat exchange tube 104, it will collide with two rubber fixed plates 302. The two rubber fixed plates 302 will move away from each other due to the impact of the gravity of the heat exchange tube 104. At this time, the heat exchange tube 104 will contact the arc-shaped fixed plate 111 due to gravity. The movement of the rubber fixed plates 302 will cause the two fixed springs 303 to compress and deform. At this time, the heat exchange tube 104 will be pushed by the elastic force of the fixed springs 303 to clamp the two rubber fixed plates 302 to prevent the heat exchange tube 104 from falling off during the rotation of the arc-shaped fixed plate 111. After the contact block 112 leaves the discharge plate 109, the rectangular frame 105 will resume rising under the elastic force of the discharge spring 106. At this time, the second heat exchange tube 104 on the left will move to the first position on the left for replenishment, which is convenient for the next discharge.

[0055] S2: When the drive motor 202 starts, the air compressor 601 is started at the same time. The air compressor 601 will simultaneously input air into the hollow telescopic cylinder 301 fixed on the circular plate 110 through the air outlet pipe 602, the air inlet box 603 and several L-shaped air inlet slots 604. The air will enter the heat exchange tube 104 through the hollow telescopic cylinder 301 and the L-shaped air inlet slots 604 on the rubber fixing plate 302. The continuous input of air will cause the air pressure in the heat exchange tube 104 to increase continuously. After the air pressure in the heat exchange tube 104 increases to a certain level, the air will stop being input into the heat exchange tube 104. At this time, the air will push the rubber fixing plate 302 close to the circular plate 110, and the rubber fixing plate 302 will move towards the circular plate 204.

[0056] S3: As the circular plate 110 continues to rotate, it will drive the inflated heat exchange tube 104 into the foam liquid tank 1. During the rotation, the heat exchange tube 104 will be immersed in the foam liquid in the foam liquid tank 1, and the foam liquid will make the heat exchange tube 104 completely covered with foam liquid. As the circular plate 110 rotates, the heat exchange tube 104 will move out of the foam liquid tank 1. When the rubber fixing plate 302, which is covered with foam liquid, rotates, the contact rod 405 on the rubber fixing plate 302 will contact the L-shaped circular rod 406. At this time, the extrusion block 505 will also contact the heat exchange tube 104. As the heat exchange tube 104 continuously adjusts its angle during rotation, the extrusion block 505 will also slide into the L-shaped hollow block 503. At this time, the extrusion spring 50 4. Compression deformation will occur. After contacting the L-shaped round rod 406, the contact rod 405 will slide into the hollow telescopic cylinder 301. The contact rod 405 will drive the T-shaped arc block 403 to leave the T-shaped arc groove 402. At this time, because the T-shaped arc block 403 leaves the T-shaped arc groove 402, the air is discharged from the air between the T-shaped arc block 403 and the T-shaped arc groove 402, thereby reducing the air pressure in the heat exchange tube 104. Correspondingly, the clamping of the rubber fixing plate 302 on the heat exchange tube 104 will also loosen. Subsequently, the extrusion block 505 will be pushed outward under the elastic force of the extrusion spring 504. The extrusion block 505 will push out the heat exchange tube 104 clamped by the rubber fixing plate 302, completing the separation of the rubber fixing plate 302 from the heat exchange tube 104.

[0057] S4: After detachment, the heat exchange tube 104 will fall onto the sorting box 701 and roll. Although the gas has been discharged, bubble focal points and foam traces will be generated on the surface of the heat exchange tube 104. During the rolling process, the sorting camera 706 will check the bubble traces generated on the surface of the heat exchange tube 104. If there are bubble traces, the sorting electric telescopic rod 704 will drive the L-shaped baffle 705 to move and close the groove in the sorting box 701. At this time, the heat exchange tube 104 will remain in the sorting box 701 during the rolling process. If there are no bubble traces on the heat exchange tube 104, the heat exchange tube 104 will roll directly into the sorting groove 702 for collection.

[0058] The optional embodiments disclosed above are merely illustrative of this application. These optional embodiments do not exhaustively describe all details, nor do they limit the application to only the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this application, thereby enabling those skilled in the art to better understand and utilize this application. This application is limited only by the claims and their full scope and equivalents.

Claims

1. A leak detection device for heat exchanger tube leak detection, comprising a foam liquid tank (1), wherein an automatic feeding mechanism (100) is provided on the foam liquid tank (1), the automatic feeding mechanism (100) comprising a triangular support plate (101) fixedly installed on the right side of the foam liquid tank (1), a feeding box (102) fixedly installed on the top of the triangular support plate (101), and an inclined groove (103) is provided inside the feeding box (102), characterized in that, Also includes: Several heat exchange tubes (104) are arranged inside the inclined groove (103). A rectangular frame (105) is slidably installed on the discharge box (102). Two discharge springs (106) are fixedly installed on the top inner wall of the rectangular frame (105). The bottom ends of the two discharge springs (106) are fixedly connected to the discharge box (102). A baffle (107) is fixedly installed on the top inner wall of the rectangular frame (105). The bottom of the baffle (107) extends into the discharge box (102). The bottom of the rectangular frame (105) A second baffle (108) is fixedly installed on the inner wall. The top of the second baffle (108) extends into the inclined groove (103). The second baffle (108) contacts the corresponding inclined groove (103). A discharge plate (109) is fixedly installed on the left side of the discharge box (102). A circular plate (110) is provided above the foam liquid tank (1). Several arc-shaped fixing plates (111) are fixedly installed on the front of the circular plate (110). Contact blocks (112) are fixedly installed on the outer walls of the several arc-shaped fixing plates (111).

2. The leak detection device for heat exchanger tube leak detection according to claim 1, characterized in that: The foam liquid tank (1) is provided with a drive mechanism (2). The drive mechanism (2) includes mounting plates (201) that are fixedly installed on the front and back of the foam liquid tank (1) respectively. A drive motor (202) is fixedly installed on the front of the corresponding mounting plate (201). A hollow rotating shaft (203) is rotatably installed on the two mounting plates (201). The hollow rotating shaft (203) passes through the two mounting plates (201). The front end of the hollow rotating shaft (203) is fixedly connected to the output shaft of the drive motor (202). The hollow rotating shaft (203) passes through the circular plate (110) and is fixedly connected to the circular plate (110). A second circular plate (204) is provided above the foam liquid tank (1).

3. The leak detection device for heat exchanger tube leak detection according to claim 2, characterized in that: A plurality of fixing mechanisms (3) are provided on the side of the circular plate (110) and the second circular plate (204) that are close to each other. The fixing mechanism (3) includes hollow telescopic cylinders (301) that are fixedly installed on the side of the second circular plate (204) and the circular plate (110) that are close to each other. Rubber fixing plates (302) are fixedly installed on the ends of the two hollow telescopic cylinders (301) that are close to each other. Fixing springs (303) are respectively sleeved on the two hollow telescopic cylinders (301). The ends of the two fixing springs (303) that are close to each other are fixedly connected to the two rubber fixing plates (302) respectively. The ends of the two fixing springs (303) that are close to each other are fixedly connected to the second circular plate (204) and the circular plate (110) respectively.

4. The leak detection device for heat exchanger tube leak detection according to claim 3, characterized in that: Each of the corresponding hollow telescopic cylinders (301) is provided with an adaptation mechanism (4). The adaptation mechanism (4) includes a round rod (401) slidably installed inside the hollow telescopic cylinder (301) near the circular plate (110). The end of the round rod (401) extends to the outside of the hollow telescopic cylinder (301) and is slidably connected to the hollow telescopic cylinder (301). A T-shaped arc groove (402) is provided on the outer wall of the corresponding hollow telescopic cylinder (301). A T-shaped arc block (403) is fixedly installed at the top of the round rod (401). The T-shaped arc block (403) and the T-shaped arc block (403) are connected to the T-shaped arc block (402). The curved groove (402) is slidably connected, and an adaptive spring (404) is sleeved on the round rod (401). The end of the adaptive spring (404) is fixedly connected to the inner wall of the hollow telescopic cylinder (301) near the round plate (110). The top of the adaptive spring (404) is fixedly connected to the inner wall of the T-shaped arc block (403). A contact rod (405) is fixedly installed on the outer wall of the T-shaped arc block (403). The top of the contact rod (405) extends to the outside of the hollow telescopic cylinder (301). An L-shaped round rod (406) is fixedly installed on the top of the foam liquid tank (1).

5. The leak detection device for heat exchanger tube leak detection according to claim 4, characterized in that: An extrusion mechanism (5) is provided on the hollow rotating shaft (203). A rotating cylinder (501) is rotatably sleeved on the extrusion mechanism (5). The outer wall of the rotating cylinder (501) is rotatably connected to the second circular plate (204). An L-shaped plate (502) is fixedly installed on the top of the foam liquid tank (1). The L-shaped plate (502) passes through the second circular plate (204) and is fixedly connected to the second circular plate (204). An L-shaped hollow block (503) is fixedly installed on the top of the L-shaped plate (502). An extrusion spring (504) is fixedly installed inside the L-shaped hollow block (503). An extrusion block (505) is fixedly installed on the left end of the extrusion spring (504). The left end of the extrusion block (505) extends into the arc-shaped fixed plate (111).

6. The leak detection device for heat exchanger tube leak detection according to claim 5, characterized in that: An inflation mechanism (6) is provided on the back of the foam liquid tank (1). The inflation mechanism (6) includes an air compressor (601) fixedly installed on the back of the foam liquid tank (1). An air outlet pipe (602) is fixedly installed on the top of the air compressor (601). An air inlet box (603) is fixedly installed on the back of the corresponding mounting plate (201). The top end of the air outlet pipe (602) is fixedly connected to the air inlet box (603). The front of the air inlet box (603) is rotatably connected to the hollow rotating shaft (203). Several L-shaped air inlet slots (604) are provided on the hollow rotating shaft (203). The ends of the several L-shaped air inlet slots (604) that are far apart from each other extend to the outside of the circular plate (110). The several L-shaped air inlet slots (604) respectively penetrate several rubber fixing plates (302) close to the circular plate (110).

7. The leak detection device for heat exchanger tube leak detection according to claim 6, characterized in that: A sorting mechanism (7) is provided on the left side of the foam liquid tank (1). The sorting mechanism (7) includes a sorting box (701) fixedly installed on the left side of the foam liquid tank (1). A sorting slot (702) is provided in the sorting box (701). An installation slot (703) is provided in the sorting box (701). A sorting electric telescopic rod (704) is fixedly installed on the left inner wall of the installation slot (703). An L-shaped baffle (705) is fixedly installed at the output end of the sorting electric telescopic rod (704). A sorting camera (706) is fixedly installed in the sorting box (701).

8. A method of using a leak detection device for heat exchanger tube leak detection, comprising the leak detection device for heat exchanger tube leak detection as described in claim 7, characterized in that, The steps are as follows: S1: First, start the drive motor (202). The drive motor (202) drives the hollow shaft (203) to rotate. The hollow shaft (203) drives the circular plate (110) to rotate. The circular plate (110) drives several arc-shaped fixed plates (111), several hollow telescopic cylinders (301), and several rubber fixed plates (302) to rotate. During the rotation of the arc-shaped fixed plate (111), the contact block (112) will be driven to rotate. During the rotation of the contact block (112), the contact block (112) will contact... The material is fed to the discharge plate (109) and descends, causing the rectangular frame (105) to descend. The rectangular frame (105) then causes baffles 1 (107) and 2 (108) to descend. Baffle 1 (107) moves into the inclined groove (103) and blocks the second heat exchange tube (104) on the left. Baffle 2 (108) descends and moves out of the inclined groove (103). At this time, the first heat exchange tube (104) on the left slides out of the discharge box (102) along the inclined groove (103). In addition, under the inertia of the heat exchange tube (104), it will fall into the corresponding arc-shaped fixed plate (111). During the descent of the heat exchange tube (104), it will collide with the two rubber fixed plates (302). The two rubber fixed plates (302) collided with the heat exchange tube (104) by gravity and will move away from each other. At this time, the heat exchange tube (104) will contact the arc-shaped fixed plate (111) due to gravity. The moving away of the rubber fixed plates (302) will cause the two fixed springs (303) to compress and deform. At this time, the heat exchange... The tube (104) will be pushed by the elastic force of the fixed spring (303) to the two rubber fixing plates (302) to clamp the heat exchange tube (104), so as to prevent the heat exchange tube (104) from falling off during the rotation of the arc-shaped fixing plate (111). After the contact block (112) leaves the discharge plate (109), the rectangular frame (105) will rise again under the elastic force of the discharge spring (106). At this time, the second heat exchange tube (104) on the left will move to the first position on the left for replenishment, which is convenient for the next discharge. S2: When the drive motor (202) starts, the air compressor (601) starts simultaneously. The air compressor (601) will simultaneously input air into the hollow telescopic cylinder (301) fixed on the circular plate (110) through the air outlet pipe (602), the air inlet box (603) and several L-shaped air inlet slots (604). The air will enter the heat exchange tube (104) through the hollow telescopic cylinder (301) and the L-shaped air inlet slots (604) on the rubber fixing plate (302). The continuous input of air will cause the air pressure in the heat exchange tube (104) to increase continuously. After the air pressure in the heat exchange tube (104) increases to a certain level, the air will stop being input into the heat exchange tube (104). At this time, the air will push the rubber fixing plate (302) close to the circular plate (110), and the rubber fixing plate (302) will move towards the circular plate (204). S3: As the circular plate (110) continues to rotate, it will drive the fully inflated heat exchange tube (104) into the foam liquid tank (1). During the rotation, the heat exchange tube (104) will be immersed in the foam liquid in the foam liquid tank (1), and the foam liquid will make the heat exchange tube (104) completely covered with foam liquid. As the circular plate (110) rotates, the heat exchange tube (104) will move out of the foam liquid tank (1). When the rubber fixing plate (302) that is covered with foam liquid is rotating, the contact rod (405) on the rubber fixing plate (302) will contact the L-shaped circular rod (406). At this time, the extrusion block (505) will also contact the heat exchange tube (104). As the heat exchange tube (104) continuously adjusts its angle during rotation, the extrusion block (505) will also slide into the L-shaped hollow block (503). At this time, the extrusion spring (504) will... Compression deformation will occur, and the contact rod (405) after contacting the L-shaped round rod (406) will slide into the hollow telescopic cylinder (301). The contact rod (405) will drive the T-shaped arc block (403) to leave the T-shaped arc groove (402). At this time, because the T-shaped arc block (403) leaves the T-shaped arc groove (402), air is discharged from the air between the T-shaped arc block (403) and the T-shaped arc groove (402), thereby reducing the air pressure in the heat exchange tube (104). Correspondingly, the rubber fixing plate (302) will loosen its clamping of the heat exchange tube (104). Subsequently, the extrusion block (505) will be pushed outward under the elastic force of the extrusion spring (504). The extrusion block (505) will push out the heat exchange tube (104) clamped by the rubber fixing plate (302), completing the separation of the rubber fixing plate (302) from the heat exchange tube (104). S4: After detachment, the heat exchange tube (104) will fall onto the sorting box (701) and roll. Although the gas has been discharged, bubble focal points and foam marks will be generated on the surface of the heat exchange tube (104). During the rolling process, the sorting camera (706) will check the surface of the heat exchange tube (104) for bubble marks. If there are bubble marks, the sorting electric telescopic rod (704) will drive the L-shaped baffle (705) to move and close the groove in the sorting box (701). At this time, the heat exchange tube (104) will remain in the sorting box (701) during the rolling process. If there are no bubble marks on the heat exchange tube (104), the heat exchange tube (104) will roll directly into the sorting groove (702) for collection.

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