A heat exchange plate air tightness detection device and an air leakage point detection method thereof

Abstract

The application provides a heat exchange plate air tightness detection device and an air leakage point detection method thereof, which comprises a base, a detection table mechanism is arranged in the middle of the base, an air tightness detection mechanism is arranged on one side of the detection table mechanism, a transverse marking mechanism and a longitudinal marking mechanism are arranged above the base, the bottom surface of the transverse marking mechanism is arranged on the top surface of the base, and the longitudinal marking mechanism is upside down, and the bottom surface thereof is arranged on the inner top surface of the shell mechanism. The application adds atomized colorless ink into the detection gas through a colorless ink atomizer, and the transverse marking mechanism and the longitudinal marking mechanism sequentially pass through the surface of the heat exchange plate, so that the colorless ink leaking from the air leakage point is contacted, transverse and longitudinal marks are left, and the air leakage point is quickly found through the extension marks of multiple laser wire markers, so that the detection efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger plate testing technology, specifically to a heat exchanger plate airtightness testing device and a method for detecting leaks. Background Technology

[0002] A heat exchanger is a device that transfers some of the heat from a hot fluid to a cold fluid. Heat exchangers play a vital role in chemical, petroleum, power, food, and many other industrial production processes. In chemical production, heat exchangers are widely used as heaters, coolers, condensers, evaporators, and reboilers. Airtightness testing is a crucial step in the heat exchanger assembly process, directly affecting the quality of the manufactured heat exchangers.

[0003] Existing heat exchanger plate airtightness testing devices mostly rely on a single method of observing the pressure gauge after inflation to test the airtightness of the heat exchanger plate. Although this can clearly indicate whether the heat exchanger plate is leaking, it cannot quickly locate the leak point. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a heat exchanger plate airtightness detection device and a method for detecting leaks, aiming to solve the technical problem mentioned in the background art of being unable to quickly locate leaks.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a heat exchange plate airtightness testing device, comprising a base, a testing platform mechanism in the middle of the base, an airtightness testing mechanism on one side of the testing platform mechanism, a horizontal marking mechanism and a vertical marking mechanism on the upper part of the base, the bottom surface of the horizontal marking mechanism being located on the top surface of the base, and the vertical marking mechanism being inverted, with its bottom surface located on the inner top surface of the outer shell mechanism.

[0006] Furthermore, the testing platform mechanism includes a scissor lift, the bottom surface of which is located on the inner bottom surface of the base, and the top surface of which is located in the middle of the bottom surface of the testing platform. A plurality of testing connection nozzles are provided on one side of the testing platform, and the plurality of testing connection nozzles are respectively connected to the airtightness testing mechanism through flexible hoses.

[0007] Furthermore, the airtightness testing mechanism includes an airtightness tester, which is embedded in one side of the base. Multiple actuators of the airtightness tester are connected to the testing connectors via flexible hoses. The input end of the airtightness tester is equipped with a colorless ink atomizer.

[0008] Furthermore, both the transverse marking mechanism and the longitudinal marking mechanism include a marking roller. The marking roller has symmetrically arranged moving units at both ends. The upper ends of the multiple moving units are respectively located at both ends of multiple electric heating tubes. The multiple electric heating tubes are respectively located on both sides of the marking roller. The lower ends of the multiple moving units are respectively slidably connected to moving tracks.

[0009] Furthermore, the moving unit includes a moving bracket, a micro motor is provided on one side of the moving bracket, the actuating end of the micro motor is coaxially connected to a drive gear, the drive gear is located in the middle of the moving bracket, the upper part of the drive gear is meshed with a rotating roller gear, the rotating roller gear is coaxially connected to one end of the marking roller, the lower part of the drive gear is meshed with a moving gear, the moving gear is rotatably connected to the lower part of the moving bracket, and the lower part of the moving gear is meshed with the middle part of the moving track.

[0010] Furthermore, the moving track includes a track groove, and a moving rack is provided in the middle of the track groove, the moving rack being engaged with the lower part of the moving unit.

[0011] Furthermore, the housing mechanism includes an observation housing, a touch display panel is provided on one side of the observation housing, and multiple laser units are slidably connected to the top surface of the observation housing.

[0012] Furthermore, viewing windows are respectively provided on the adjacent sides of the observation housing, and the interior of each of the multiple viewing windows is provided with curved glass. A lifting port is provided in the middle of the top surface of the observation housing, and multiple laser sliding grooves are respectively provided on the side of the multiple viewing windows near the lifting port. The laser unit is slidably connected to the middle part of each laser sliding groove.

[0013] Furthermore, the laser unit includes a laser wire beater, the bottom surface of which is provided with a laser slider, and one end of which is provided with an arc-shaped pointer, the inner arc of which matches the outer arc surface of the curved glass.

[0014] Furthermore, a method for detecting leaks in a heat exchanger plate airtightness testing device includes the following steps:

[0015] S1: Placement and Connection: By operating the touch display panel, start the scissor lift to raise the detection platform to be flush with the top surface of the outer shell mechanism, place the heat exchange plate on the top surface of the detection platform, connect the input and output ends of the heat exchange plate to multiple detection connection ports through hoses, and lower the detection platform to its original position through the scissor lift;

[0016] S2: Air tightness test: By operating the touch display panel, the air tightness tester is activated to inject air mixed with the decolorizing ink mist generated by the decolorizing ink atomizer into the heat exchange plate. The pressure value is displayed through the touch display panel to determine whether the heat exchange plate is leaking. If there is no leak, proceed directly to step S8.

[0017] S3: Horizontal and vertical marking: By operating the touch display panel, the horizontal marking mechanism is first activated. Driven by multiple moving units, the marking roller moves and sweeps the upper surface of the heat exchange plate. When it passes the air leakage point, the leaked colorless ink will leave color on the marking roller to form a horizontal mark. Then the vertical marking mechanism is activated to form a vertical mark in the same way. If there is no mark, proceed directly to step S8.

[0018] S4: Laser alignment: Observe the position of the horizontal and vertical marks through the curved glass, and slide multiple laser units so that the arc-shaped pointers in the multiple laser units point to the horizontal and vertical marks respectively;

[0019] S5: Eliminate marks: By operating the touch display panel, first activate the vertical marking mechanism to reset, and at the same time turn on multiple electric heating tubes to heat the marking roller, thereby eliminating the vertical marks left by the decolorizing ink. Then activate the horizontal marking mechanism to reset, and similarly eliminate the horizontal marks through multiple electric heating tubes.

[0020] S6: Locate the leak: By operating the touch display panel, start the scissor lift, raise the detection platform to be flush with the top surface of the outer shell mechanism, turn on multiple laser wire cutters, and observe the points where multiple laser lines intersect to quickly find the leak and proceed to step S8.

[0021] S7: Flip and place: Remove the heat exchange plate, flip it over, and return to step S1.

[0022] S8: Test complete: Remove the heat exchange plate to complete the test.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] Atomized decolorizing ink is added to the detection gas through a decolorizing ink atomizer. The ink passes through the heat exchange plate surface in sequence via horizontal and vertical marking mechanisms, thus contacting the leaking decolorizing ink at the leak point and leaving horizontal and vertical marks. Multiple laser line markers extend the marks, thereby quickly locating the leak point and greatly improving detection efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0026] Figure 2This is a cross-sectional view of the internal structure of the present invention;

[0027] Figure 3 This is a schematic diagram showing the open structure of the detection platform mechanism and the airtightness detection mechanism of the present invention;

[0028] Figure 4 This is a schematic diagram of the transverse marking mechanism or the longitudinal marking mechanism of the present invention;

[0029] Figure 5 This is a cross-sectional schematic diagram of the moving unit structure of the present invention;

[0030] Figure 6 This is a cross-sectional schematic diagram of the moving track structure of the present invention;

[0031] Figure 7 This is a schematic diagram of the outer shell mechanism of the present invention;

[0032] Figure 8 This is a cross-sectional view of the outer shell structure of the present invention;

[0033] Figure 9 This is a schematic diagram of the laser unit structure of the present invention.

[0034] In the diagram: 1. Base; 2. Testing platform mechanism; 21. Scissor lift; 22. Testing platform; 23. Testing connector; 3. Air tightness testing mechanism; 31. Air tightness tester; 32. Decolorizing ink atomizer; 4. Horizontal marking mechanism; 41. Marking roller; 42. Moving unit; 421. Moving bracket; 422. Micro motor; 423. Drive gear; 424. Rotating roller gear; 425. Moving gear; 43. Electric heating element; 44. Moving track; 441. Track groove; 442. Moving rack; 5. Longitudinal marking mechanism; 6. Housing mechanism; 61. Observation housing; 611. Viewing window; 612. Curved glass; 613. Lifting port; 614. Laser groove; 62. Touch display panel; 63. Laser unit; 631. Laser wire punch; 632. Laser slider; 633. Curved pointer. Detailed Implementation

[0035] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] Please refer to the following examples. Figure 1-2 A heat exchange plate air tightness testing device and its leakage point detection method include a base 1, a testing platform mechanism 2 in the middle of the base 1, an air tightness testing mechanism 3 on one side of the testing platform mechanism 2, a horizontal marking mechanism 4 and a vertical marking mechanism 5 on the top of the base 1, the bottom surface of the horizontal marking mechanism 4 is located on the top surface of the base 1, and the vertical marking mechanism 5 is inverted, with its bottom surface located on the inner top surface of the outer shell mechanism 6.

[0039] Please refer to the following examples. Figure 3 The testing platform mechanism 2 includes a scissor lift 21. The bottom surface of the scissor lift 21 is located on the inner bottom surface of the base 1, and the top surface of the scissor lift 21 is located in the middle of the bottom surface of the testing platform 22. A plurality of testing connection nozzles 23 are provided on one side of the testing platform 22. The plurality of testing connection nozzles 23 are respectively connected to the airtightness testing mechanism 3 through hoses. This design controls the raising and lowering of the testing platform 22 through the scissor lift 21.

[0040] Please refer to the following examples. Figure 3 The airtightness testing mechanism 3 includes an airtightness tester 31, which is embedded in one side of the base 1. Multiple actuators of the airtightness tester 31 are connected to the test connector 23 via flexible hoses. The input end of the airtightness tester 31 is equipped with a decolorizing ink atomizer 32. This design uses the decolorizing ink atomizer 32 to atomize the decolorizing ink and send it to the input end of the airtightness tester 31. The air supply mixed with decolorizing ink atomization is input to the heat exchange plate for testing.

[0041] Please refer to the following examples. Figure 4Both the transverse marking mechanism 4 and the longitudinal marking mechanism 5 include a marking roller 41. The marking roller 41 has symmetrically arranged moving units 42 at both ends. The upper ends of multiple moving units 42 are respectively located at both ends of multiple electric heating tubes 43. Multiple electric heating tubes 43 are respectively located on both sides of the marking roller 41. The lower ends of multiple moving units 42 are slidably connected to moving tracks 44. This design drives the marking roller 41 to rotate while moving slowly through multiple moving units 42, so that the lower part of the marking roller 41 sweeps on the surface of the heat exchange plate, so that the decolorizing ink leaking from the air leakage point leaves a mark on the marking roller 41. When resetting, the marking roller 41 is heated by multiple electric heating tubes 43, thereby eliminating the mark left by the decolorizing ink.

[0042] Please refer to the following examples. Figure 5 The moving unit 42 includes a moving bracket 421. A micro motor 422 is provided on one side of the moving bracket 421. The actuating end of the micro motor 422 is coaxially connected to a drive gear 423. The drive gear 423 is located in the middle of the moving bracket 421. The upper part of the drive gear 423 is meshed with a rotating roller gear 424. The rotating roller gear 424 is coaxially connected to one end of the marking roller 41. The lower part of the drive gear 423 is meshed with a moving gear 425. The moving gear 425 is rotatably connected to the lower part of the moving bracket 421. The lower part of the moving gear 425 is meshed with the middle part of the moving track 44. This design drives the drive gear 423 to rotate through the micro motor 422, which in turn drives the marking roller 41 to rotate through the rotating roller gear 424. At the same time, the drive gear 423 drives the moving gear 425 to rotate. Through meshing with the moving track 44, the moving bracket 421 is moved along the moving track 44.

[0043] Please refer to the following examples. Figure 6 The moving track 44 includes a track groove 441, and a moving rack 442 is provided in the middle of the track groove 441. The moving rack 442 is engaged with the lower part of the moving unit 42.

[0044] Please refer to the following examples. Figure 7 The outer casing 6 includes an observation casing 61, a touch display panel 62 on one side of the observation casing 61, and multiple laser units 63 slidably connected to the top surface of the observation casing 61. This design allows for operation of the collection via the touch display panel 62.

[0045] Please refer to the following examples. Figure 8The observation housing 61 has windows 611 on its adjacent sides, and each of the windows 611 has a curved glass 612 inside. The top surface of the observation housing 61 has a lifting port 613 in the middle. Each of the windows 611 has a laser groove 614 on the side near the lifting port 613. The laser unit 63 is slidably connected to the middle part of each laser groove 614. This design allows the marking position on the corresponding marking roller 41 to be observed through the multiple curved glass 612.

[0046] Please refer to the following examples. Figure 9 The laser unit 63 includes a laser wire beater 631. The bottom surface of the laser wire beater 631 is provided with a laser slider 632. One end of the laser wire beater 631 is provided with an arc-shaped pointer 633. The inner arc of the arc pointer 633 matches the outer arc surface of the curved glass 612. This design allows the arc pointer 633 to point to the mark on the marking roller 41 by sliding the laser slider 632.

[0047] An embodiment of a method for detecting leaks in a heat exchanger plate airtightness testing device includes the following steps:

[0048] S1: Placement and Connection: By operating the touch display panel 62, the scissor lift 21 is activated to raise the detection platform 22 to be flush with the top surface of the outer shell mechanism 6. The heat exchange plate is placed on the top surface of the detection platform 22. The input and output ends of the heat exchange plate are connected to multiple detection connection ports 23 through flexible hoses. The detection platform 22 is then lowered back to its original position using the scissor lift 21.

[0049] S2: Air tightness test: By operating the touch display panel 62, the air tightness tester 31 is activated to inject air mixed with the decolorizing ink mist generated by the decolorizing ink atomizer 32 into the heat exchange plate. The pressure value is displayed on the touch display panel 62 to determine whether the heat exchange plate is leaking. If there is no leak, proceed directly to step S8.

[0050] S3: Horizontal and vertical marking: By operating the touch display panel 62, the horizontal marking mechanism 4 is first activated. Driven by multiple moving units 42, the marking roller 41 moves and sweeps the upper surface of the heat exchange plate. When it passes the air leakage point, the leaked colorless ink will leave color on the marking roller 41 to form a horizontal mark. Then the vertical marking mechanism 5 is activated to form a vertical mark in the same way. If there is no mark, proceed directly to step S8.

[0051] S4: Laser alignment: Observe the position of the horizontal and vertical marks through the curved glass 612, and slide multiple laser units 63 so that the arc-shaped pointers 633 in the multiple laser units 63 point to the horizontal and vertical marks respectively;

[0052] S5: Eliminate marks: By operating the touch display panel 62, first activate the vertical marking mechanism 5 to reset, and at the same time turn on multiple electric heating tubes 43 to heat the marking roller 41, thereby eliminating the vertical marks left by the decolorizing ink. Then activate the horizontal marking mechanism 4 to reset, and similarly eliminate the horizontal marks through multiple electric heating tubes 43.

[0053] S6: Locate the leak: By operating the touch display panel 62, start the scissor lift 21, raise the detection platform 22 to be flush with the top surface of the outer shell mechanism 6, turn on multiple laser wire punches 631, and observe the points where multiple laser lines intersect to quickly find the leak and proceed to step S8.

[0054] S7: Flip and place: Remove the heat exchange plate, flip it over, and return to step S1.

[0055] S8: Test complete: Remove the heat exchange plate to complete the test; this design has passed.

[0056] The present invention has been described by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A heat exchange plate air tightness detection device, comprising a base (1), characterized in that: The middle part of the base (1) is provided with a detection platform mechanism (2), one side of the detection platform mechanism (2) is provided with an air tightness detection mechanism (3), the upper part of the base (1) is provided with a transverse marking mechanism (4) and a longitudinal marking mechanism (5), the bottom surface of the transverse marking mechanism (4) is arranged on the top surface of the base (1), and the longitudinal marking mechanism (5) is upside down, and the bottom surface thereof is arranged on the inner top surface of a shell mechanism (6); The detection platform mechanism (2) comprises a shear type elevator (21), the bottom surface of the shear type elevator (21) is arranged on the inner bottom surface of the base (1), the top surface of the shear type elevator (21) is arranged on the middle part of the bottom surface of a detection platform plate (22), one side of the detection platform plate (22) is provided with a plurality of detection connecting mouths (23), and the plurality of detection connecting mouths (23) are respectively connected with the air tightness detection mechanism (3) through hoses; The air tightness detection mechanism (3) comprises an air tightness detector (31), the air tightness detector (31) is embedded on one side of the base (1), a plurality of execution ends of the air tightness detector (31) are respectively connected with the detection connecting mouths (23) through hoses, and an achromatic ink atomizer (32) is arranged on the input end of the air tightness detector (31); The transverse marking mechanism (4) and the longitudinal marking mechanism (5) both comprise a marking roller (41), the two ends of the marking roller (41) are symmetrically provided with moving units (42), the upper ends of the plurality of moving units (42) are respectively arranged at the two ends of a plurality of electric heating pipes (43), the plurality of electric heating pipes (43) are respectively arranged on the two sides of the marking roller (41), and the lower ends of the plurality of moving units (42) are respectively connected with moving rails (44) in a sliding mode; The shell mechanism (6) comprises an observation shell (61), one side of the observation shell (61) is provided with a touch display panel (62), and the top surface of the observation shell (61) is connected with a plurality of laser units (63) in a sliding mode; Two adjacent sides of the observation shell (61) are respectively provided with windows (611), the inner parts of the plurality of windows (611) are respectively provided with arc glasses (612), the middle part of the top surface of the observation shell (61) is provided with a lifting opening (613), and the sides, close to the lifting opening (613), of the plurality of windows (611) are respectively provided with a plurality of laser sliding grooves (614), and the middle parts of the laser sliding grooves (614) are respectively connected with the laser units (63) in a sliding mode; The laser unit (63) comprises a laser wire marker (631), the bottom surface of the laser wire marker (631) is provided with a laser sliding block (632), one end of the laser wire marker (631) is provided with an arc pointer (633), and the inner arc of the arc pointer (633) is matched with the outer arc surface of the arc glass (612).

2. The heat transfer plate air tightness detection device according to claim 1, characterized in that: The moving unit (42) comprises a moving support (421), one side of the moving support (421) is provided with a micro motor (422), the execution end of the micro motor (422) is coaxially connected with a driving gear (423), the driving gear (423) is arranged in the middle of the moving support (421), the upper part of the driving gear (423) is engagedly connected with a rotating stick gear (424), the rotating stick gear (424) is coaxially connected with one end of the marking roller (41), the lower part of the driving gear (423) is engagedly connected with a moving gear (425), the moving gear (425) is rotatably connected with the lower part of the moving support (421), and the lower part of the moving gear (425) is engagedly connected with the middle part of the moving track (44).

3. The heat transfer plate air tightness detection device according to claim 2, characterized in that The moving track (44) comprises a track sliding groove (441), and the middle part of the track sliding groove (441) is provided with a moving rack (442), the moving rack (442) is engagedly connected with the lower part of the moving unit (42).

4. The method according to claim 3, wherein The method comprises the following steps: S1: placing connection: by operating the touch display panel (62), the scissor lift (21) is started, the detection platform (22) is raised to be flush with the top surface of the shell mechanism (6), the heat exchange plate is placed on the top surface of the detection platform (22), the input end and the output end of the heat exchange plate are connected with a plurality of detection connection nozzles (23) through a hose, and the detection platform (22) is lowered to the original position through the scissor lift (21); S2: air tightness detection: by operating the touch display panel (62), the air tightness detector (31) is started to inject air mixed with the color removal ink mist generated by the color removal ink atomizer (32) into the heat exchange plate, and the pressure value is displayed through the touch display panel (62), so that whether the heat exchange plate leaks is known, if not, directly enter step S8; S3: horizontal and vertical marking: by operating the touch display panel (62), the horizontal marking mechanism (4) is started first, under the driving of a plurality of moving units (42), the marking roller (41) moves and scans the upper surface of the heat exchange plate, when passing through the air leakage point, the color removal ink leaked will leave color on the marking roller (41), forming horizontal marking, then the vertical marking mechanism (5) is started, and the vertical marking is formed in the same way, if there is no marking, directly enter step S8; S4: laser alignment: the positions of the horizontal marking and the vertical marking are observed through the cambered glass (612), a plurality of laser units (63) are slid, and arc-shaped pointers (633) in the plurality of laser units (63) respectively point to the horizontal marking and the vertical marking; S5: eliminating marking: by operating the touch display panel (62), the vertical marking mechanism (5) is started to reset, a plurality of electric heating pipes (43) are turned on to heat the marking roller (41), so that the vertical marking left by the color removal ink is eliminated, then the horizontal marking mechanism (4) is started to reset, and the horizontal marking is also eliminated through the plurality of electric heating pipes (43). S6: Locate the leak: By operating the touch display panel (62), start the scissor lift (21) to raise the detection platform (22) to be flush with the top surface of the outer shell mechanism (6), turn on multiple laser wire punches (631), observe the points where multiple laser lines intersect, and you can quickly find the leak and proceed to step S8. S7: Flip and place: Remove the heat exchange plate, flip it over, and return to step S1. S8: Test complete: Remove the heat exchange plate to complete the test.

Images