Humidifier leak detection device for fuel cell engine

Abstract

The invention relates to the technical field of leak detection equipment, in particular to a humidifier leak detection device for a fuel cell engine, which comprises a leak detection disc base, a plurality of through holes are formed in the periphery of the leak detection disc base, a side plate is arranged at the bottom end of the leak detection disc base, a movable seat is movably mounted above the leak detection disc base, and a rotating disc is rotatably mounted above the movable seat. A gas supercharger is placed on the rotating disc; the multiple auxiliary detection assemblies are arranged on the two sides of the leakage detection disc base respectively, each auxiliary detection assembly comprises a storage module and a sealing module, the sealing modules are used for wrapping the pipeline connecting positions of the humidifier to conduct auxiliary leakage detection, and the storage modules are used for folding and carrying the multiple sealing modules. Compared with the prior art, the auxiliary detection assembly is arranged, so that the leakage detection process is more efficient, stable and reliable, and normal operation of equipment and the accuracy of a detection result are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of leak detection equipment, and in particular to a humidifier leak detection device for a fuel cell engine. Background Art

[0002] A fuel cell engine is a device that uses chemical reactions to convert fuel (such as hydrogen) and oxygen into electrical energy. A humidifier is an important component in a fuel cell system, responsible for regulating the humidity in the fuel and air to keep the fuel cell in optimal working condition. In a fuel cell system, the function of the humidifier is to increase the moisture in the intake air flow to prevent the fuel cell membrane from drying out, thereby improving its performance and life. During the use of the humidifier, it is necessary to regularly check whether there is a potential risk of leakage. Therefore, regular leak detection is an important step to ensure the normal operation of the system. During the leak detection process, a gas booster is usually required to inject gas into the humidifier for detection.

[0003] In the prior art, when inspecting a traditional humidifier, usually only the leak inside the humidifier is inspected, while the humidifier is connected to the outside with many pipes, and the connections of these pipes cannot usually be inspected together. Since these pipe connections are prone to air leakage, but traditional devices lack the comprehensive detection capability of these external connection points, these potential leakage problems are often ignored during the detection process, which in turn affects the overall sealing and operational reliability of the equipment. Therefore, the present application discloses a leak detection device for a humidifier for a fuel cell engine to meet the requirements of synchronous detection of the humidifier connecting pipes. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a humidifier leak detection device for a fuel cell engine to solve the problem that the pipes connected to the humidifier cannot be detected together.

[0005] Based on the above-mentioned purpose, the present invention provides a humidifier leak detection device for a fuel cell engine, comprising: a leak detection disk base, a plurality of through holes are opened around the leak detection disk base, a side plate is arranged at the bottom end of the leak detection disk base, a movable seat is movably installed above the leak detection disk base, a rotating disk is rotatably installed above the movable seat, and a gas booster is placed on the rotating disk; an adjustment component, the adjustment component comprises a lifting module and a rotating adjustment module, the lifting module is used to adjust the height of the movable seat and the rotating disk, and the rotating adjustment module is used to adjust the position of the rotating disk; a plurality of auxiliary detection components, the plurality of auxiliary detection components are respectively arranged on both sides of the leak detection disk base, the auxiliary detection components comprise a storage module and a sealing module, the sealing module is used to wrap the pipeline connection of the humidifier for auxiliary leak detection, and the storage module is used to collect and carry a plurality of sealing modules.

[0006] Preferably, the lifting module includes two fixed seats fixedly installed in the middle of the upper end of the leak detection disk base, first movable plates are rotatably installed on both sides of the two fixed seats, two second movable plates are rotatably installed on both sides of the lower middle part of the movable seat, the other sides of the two second movable plates are rotatably connected with the two first movable plates respectively, a screw rod is rotatably installed through the connection between the two first movable plates and the second movable plates, the screw rod is threadedly connected to the connection between one of the first movable plates and the second movable plate, one side of one of the screw rods is fixedly connected to an adjusting wheel, and a pulley is sleeved on the side of the two screw rods close to the adjusting wheel, and a belt is sleeved between the two pulleys.

[0007] Preferably, the rotation adjustment module includes a telescopic rod rotatably mounted at a corner of the movable seat, the bottom telescopic end of the telescopic rod is fixedly connected to a second bevel gear, one end of one of the screw rods is fixedly connected to a first bevel gear meshing with the second bevel gear, the top end of the telescopic rod is sleeved with a rotating gear disk, and a rotating rod is also rotatably mounted on one side of the movable seat, the bottom of the rotating rod is sleeved with an engaging gear disk meshing with the telescopic rod, the top end of the rotating rod is fixedly connected to one side of the rotating disk, and the rotating disk and the rotating rod are eccentrically arranged.

[0008] Preferably, a plurality of positioning seats are fixedly installed on both ends of the leak detection tray base, and the storage module includes a storage box fixedly installed on the plurality of positioning seats, one side of the positioning seat is arranged in an arc shape adapted to the storage box, a torsion spring is arranged inside the storage box, an inlet and outlet are opened on one side of the storage box, a storage cable is wound around the outer surface of the torsion spring, and one end of the storage cable passes through the inlet and outlet.

[0009] Preferably, the sealing module includes a positioning rod fixedly connected to one end of the storage cable, and the outer surface of the positioning rod is rotatably installed with a first wrapping block and a second wrapping block, and the other side connection of the first wrapping block and the second wrapping block is fixedly installed with a connecting plate, and the first wrapping block and the second wrapping block are respectively provided with a first sealing gasket and a second sealing gasket on both sides.

[0010] Preferably, a rubber cover is provided on the top of the first packing block.

[0011] Preferably, clamping plates are provided on both sides of the first wrapping block and the second wrapping block, and the clamping plates inside the first wrapping block and the second wrapping block are arranged opposite to each other, a plurality of extrusion springs are provided between the clamping plate and the first wrapping block or the second wrapping block, and a plurality of teeth are provided on the inner side surface of the clamping plate.

[0012] Preferably, a first fixing plate and a second fixing plate are fixedly installed at one end of the two connecting plates respectively, a fixing hook is provided on one side of the first fixing plate, a rotating handle is rotatably installed on one side of the second fixing plate, and a locking ring adapted to the fixing hook is provided on one side of the rotating handle.

[0013] Preferably, the leak detection disk base, movable seat and the middle of the rotating disk are all provided with through holes, the through hole between the leak detection disk base and the movable seat is provided with a through pipe, the through pipe is configured as a telescopic tube, and the through holes on the movable seat and the rotating disk are provided with bellows.

[0014] Beneficial effects of the present invention: 1. The humidifier leak detection device for the fuel cell engine is provided with an auxiliary detection component. The arc adaptation design of the positioning seat and the storage box ensures the stable installation of the storage module. At the same time, the torsion spring system makes the cable storage neat and orderly, reduces the possibility of cable entanglement, and is convenient for operators to use. The sealing module enhances the clamping force of the wrapping block on the pipe connection through the cooperation of the clamping plate, the extrusion spring and the teeth, ensures the tight sealing of the connection, and prevents the occurrence of air leakage. The rubber cover can detect whether the connection is leaking during the gas injection process, thereby improving the accuracy of the overall detection. The combination of the fixing plate and the locking device simplifies the installation and removal process of the wrapping block and improves the efficiency and safety of the operation. The comprehensive application of these modules makes the leak detection process more efficient, stable and reliable, ensuring the normal operation of the equipment and the accuracy of the test results. Multiple storage cables can be pulled out from multiple storage boxes respectively. The wrapping block automatically closes around each pipe connection and is firmly locked by the locking device to ensure the sealing of each pipe connection. Each cable and its corresponding sealing module can work synchronously. The clamping plate and teeth ensure that all connections remain highly sealed during the simultaneous detection of multiple pipes.

[0015] 2. This fuel cell engine humidifier leak detection device is provided with an adjustment component. The lifting module realizes the smooth lifting of the movable seat through the fixed seat, movable plate, screw and belt system, so that the gas booster can be adjusted at different heights to meet various leak detection needs, ensuring the smoothness and synchronization of the lifting operation, avoiding equipment instability or increased operating difficulty caused by unbalanced lifting. The rotation adjustment module allows precise adjustment of the angle and position of the rotating disk through the bevel gear and telescopic rod system, especially in the presence of obstructions, it can avoid obstacles and ensure that the gas booster is in the best working position. The eccentric setting makes the adjustment process more flexible. At the same time, the cooperation of the large gear and the small gear reduces the rotation angle required for the operation, simplifies the adjustment process, and improves the operating efficiency. This precise adjustment capability ensures the accuracy of the leak detection process and the good operation of the equipment, thereby improving the overall leak detection performance and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the structure of the regulating component of the present invention; Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle; Figure 4 This is a schematic diagram of the bottom structure of the leak detection plate base of the present invention; Figure 5 This is a schematic diagram of the planar structure of the leak detection plate base of the present invention; Figure 6 This is a schematic diagram of the decomposed structure of the regulating component of the present invention; Figure 7 This is a schematic diagram of the storage module structure of the present invention; Figure 8 This is a schematic diagram of the sealing module structure of the present invention; Fig. 9 This is a schematic cross-sectional structural diagram of a sealing module of the present invention; Fig.10 This is a schematic diagram of the locking structure of the sealing module of the present invention.

[0018] The markings in the figure are: 1. Leak detection disc base; 2. Through hole; 3. Side plate; 4. Movable seat; 5. Fixed seat; 6. First movable plate; 7. Second movable plate; 8. Screw rod; 9. Pulley; 10. Belt; 11. Adjusting wheel; 12. First bevel gear; 13. Telescopic rod; 14. Second bevel gear; 15. Rotating gear plate; 16. Rotating rod; 17. Engaging gear plate; 18. Rotating disc; 19. Through pipe; 20. Bellows; 21. Positioning seat; 22. Storage box; 23. Torsion spring; 24. Storage cable; 25. Positioning rod; 26. First wrapping block; 27. Second wrapping block; 28. First sealing gasket; 29. ​​Second sealing gasket; 30. Clamping plate; 31. Extrusion spring; 32. Rubber cover; 33. Connecting plate; 34. First fixed plate; 35. Second fixed plate; 36. Fixing hook; 37. Rotating handle; 38. Locking ring. DETAILED DESCRIPTION

[0019] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0020] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] like Figures 1 to 10As shown, a humidifier leak detection device for a fuel cell engine comprises a leak detection disk base 1, a plurality of through holes 2 are provided around the leak detection disk base 1, a side plate 3 is provided at the bottom end of the leak detection disk base 1, a movable seat 4 is movably installed above the leak detection disk base 1, a rotating disk 18 is rotatably installed above the movable seat 4, and a gas booster is placed on the rotating disk 18; an adjusting component, the adjusting component comprises a lifting module and a rotating adjusting module, the lifting module is used to adjust the height of the movable seat 4 and the rotating disk 18, and the rotating adjusting module is used to adjust the position of the rotating disk 18; a plurality of auxiliary detection components, the plurality of auxiliary detection components are respectively arranged on both sides of the leak detection disk base 1, the auxiliary detection components comprise a storage module and a sealing module, the sealing module is used to wrap the pipeline connection of the humidifier for auxiliary leak detection, the storage module is used to collect and carry a plurality of sealing modules, the leak detection disk base 1, the movable seat 4 and the middle of the rotating disk 18 are all provided with through holes, the through hole between the leak detection disk base 1 and the movable seat 4 is provided with a through pipe 19, and the through pipe 19 is arranged to extend The telescopic tube, the through holes on the movable seat 4 and the rotating disk 18 are provided with bellows 20; first, remove the end cover of the humidifier, and align the leak detection disk base 1 with the hole position of the humidifier through the through hole 2, and firmly lock the leak detection disk base 1 and the humidifier with bolts, then adjust the height of the movable seat 4 and the rotating disk 18 through the lifting module, so that the gas booster is firmly placed on the rotating disk 18, and is connected to the humidifier through the bellows 20, and the position of the gas booster is adjusted by the rotation adjustment module to ensure that it is aligned with the connection with the humidifier and is in an eccentric position suitable for operation. As the movable seat 4 rises and falls, the telescopic tube will automatically expand and contract according to the height change to maintain the continuity of the gas channel, and then, wrap the sealing module in the auxiliary test component around the pipe connection of the humidifier to enhance the sealing, start the gas booster, inject gas into the humidifier, and detect whether there is a gas leak. After the detection is completed, stop the gas injection, release the bolt locking, remove the leak detection disk, and close the sealing module through the storage module to end the leak detection operation.

[0022] like Figure 2 , Figure 3 , Figure 6As shown, the lifting module includes two fixed seats 5 fixedly installed in the middle of the upper end of the leak detection disk base 1, and the first movable plates 6 are rotatably installed on both sides of the two fixed seats 5. Two second movable plates 7 are rotatably installed on both sides of the lower middle part of the movable seat 4, and the other sides of the two second movable plates 7 are rotatably connected with the two first movable plates 6 respectively. A screw rod 8 is rotatably installed through the connection between the two first movable plates 6 and the second movable plates 7. The screw rod 8 is threadedly connected to the connection between one of the first movable plates 6 and the second movable plate 7. One side of one of the screw rods 8 is fixedly connected with an adjusting wheel 11, and the two screw rods 8 are sleeved with pulleys 9 on the sides close to the adjusting wheels 11, and a belt 10 is sleeved between the two pulleys 9; before performing the leak detection operation, first put the humidifier It is fixed on the leak detection disk base 1, and then the screw rod 8 is driven by rotating the adjusting wheel 11. The screw rod 8 drives the connection point between the first movable plate 6 and the second movable plate 7 to rotate through a threaded connection, thereby driving the movable seat 4 to rise and fall. Since the two screw rods 8 are connected to the pulley 9 through a belt 10, the two screw rods 8 will rotate synchronously when the adjusting wheel 11 is rotated, thereby realizing the smooth rise and fall of the movable seat 4. As the movable seat 4 rises and falls, the height of the gas booster is also adjusted accordingly; the rotation adjustment module includes a telescopic rod 13 rotatably installed at a corner of the movable seat 4, and the bottom telescopic end of the telescopic rod 13 is fixedly connected to the second bevel gear 14, one end of one of the screw rods 8 is fixedly connected to the first bevel gear 12 meshing with the second bevel gear 14, and the top sleeve of the telescopic rod 13 A rotating toothed disc 15 is provided, and a rotating rod 16 is also rotatably installed on one side of the movable seat 4. The bottom of the rotating rod 16 is sleeved with an engaging toothed disc 17 that meshes with the telescopic rod 13. The top of the rotating rod 16 is fixedly connected to one side of the rotating disc 18, and the rotating disc 18 cooperates with the rotating rod 16 to be eccentrically arranged; when it is necessary to adjust the position angle of the rotating disc 18, the telescopic rod 13 can be pulled downward, so that the first bevel gear 12 is meshed with the second bevel gear 14, and the screw rod 8 is driven by rotating the adjusting wheel 11 to make the first bevel gear 12 rotate and drive the second bevel gear 14 meshed therewith. The rotation of the second bevel gear 14 will cause the telescopic action of the telescopic rod 13, and the bottom of the telescopic rod 13 is connected to the rotating toothed disc 15, so that the rotating toothed disc 15 rotates, and the rotating rod 16 The top is connected to the rotating disk 18, and the meshing toothed disk 17 at the bottom of the rotating rod 16 is meshed with the telescopic rod 13. As the rotating toothed disk 15 rotates, the rotating rod 16 is driven to rotate, thereby adjusting the angle of the rotating disk 18. Since the rotating disk 18 is connected to the gas booster and the rotating disk 18 is eccentrically arranged, it can avoid possible obstructions during operation during the adjustment process, thereby ensuring that the gas booster is in the optimal operating position. It is worth mentioning that during the position adjustment process, since the diameter of the rotating toothed disk 15 is larger than the meshing toothed disk 17, the large gear drives the small gear. In this case, the required angle for rotating the adjusting wheel 11 is very small, so the small rise and fall caused during the adjustment of the rotating disk 18 will not cause operational obstacles and can be ignored.

[0023] like Figure 1 , Figure 7 , Figure 8 , Fig. 9 , Fig.10As shown, both ends of the leak detection disk base 1 are fixedly installed with a plurality of positioning seats 21, and the storage module includes a storage box 22 fixedly installed on the plurality of positioning seats 21, one side of the positioning seat 21 is arranged in an arc shape adapted to the storage box 22, a torsion spring 23 is arranged inside the storage box 22, one side of the storage box 22 is provided with an inlet and outlet, the outer surface of the torsion spring 23 is wound with a storage cable 24, one end of the storage cable 24 passes through the inlet and outlet, and the sealing module includes a positioning rod 25 fixedly connected to one end of the storage cable 24, and the outer surface of the positioning rod 25 is rotatably installed with a first wrapping block 26 and a second wrapping block 27, and the other side connection of the first wrapping block 26 and the second wrapping block 27 is fixedly installed with a connecting plate 33, the first A first sealing gasket 28 and a second sealing gasket 29 are respectively arranged on both sides of the wrapping block 26 and the second wrapping block 27. A rubber cover 32 is arranged on the top of the first wrapping block 26. The rubber cover 32 can be expanded during the leakage test. After the leak detection operation starts, the humidifier is first fixed on the leak detection plate base 1, and the position and angle of the gas booster are adjusted by the lifting module and the rotation adjustment module. Then, the storage cable 24 is pulled out of the storage box 22. After pulling a certain distance, the first wrapping block 26 and the second wrapping block 27 will rotate around the pipe connection and close together, and they are fixed by the connecting plate 33 to ensure that the sealing module firmly wraps the pipe connection. The first sealing gasket 28 and the second sealing gasket 29 are respectively attached to both sides of the connection. , further enhance the sealing effect, the rubber cover 32 covers the top of the connection to cope with possible pressure changes and ensure the sealing. Then, the gas booster is started to inject gas into the humidifier for leakage detection. During the detection process, the rubber cover 32 swells, then there is a leakage state at the connection, otherwise there is no leakage; the first package block 26 and the second package block 27 are provided with clamping plates 30 on both sides of the inside, and the clamping plates 30 inside the first package block 26 and the second package block 27 are arranged oppositely, and a plurality of extrusion springs 31 are arranged between the clamping plate 30 and the first package block 26 or the second package block 27, and a plurality of teeth are arranged on the inner side of the clamping plate 30; during the leakage detection operation, the storage cable 24 is pulled out and the positioning rod 25 is moved. Insert the pipe connection of the humidifier, the first wrapping block 26 and the second wrapping block 27 rotate around the pipe connection and close, the internal clamping plate 30 clamps the pipe connection through the action of the extrusion spring 31, and the teeth further bite the connection to enhance the clamping force and sealing effect, then start the gas booster to perform leakage detection, after completion, release the sealing module, rewind the storage cable 24 into the storage box 22, and end the operation; one end of the two connecting plates 33 is respectively fixedly installed with a first fixing plate 34 and a second fixing plate 35, one side of the first fixing plate 34 is provided with a fixing hook 36, and one side of the second fixing plate 35 is rotatably installed with a rotating handle 37, and one side of the rotating handle 37 is provided with a locking ring 38 adapted to the fixing hook 36;During the leak detection operation, after the first wrapping block 26 and the second wrapping block 27 are closed around the pipe connection, the first fixing plate 34 and the second fixing plate 35 are connected through the connecting plate 33, and the handle 37 is rotated so that the locking ring 38 on it cooperates with the fixing hook 36 to firmly lock the wrapping block at the pipe connection. ;

[0024] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0025] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A humidifier leak detection device for a fuel cell engine, characterized in that: include: A leak detection disk base (1), wherein a plurality of through holes (2) are formed around the leak detection disk base (1), a side plate (3) is provided at the bottom end of the leak detection disk base (1), a movable seat (4) is movably mounted above the leak detection disk base (1), a rotating disk (18) is rotatably mounted above the movable seat (4), and a gas booster is placed on the rotating disk (18); an adjustment component, wherein the adjustment component comprises a lifting module and a rotating adjustment module, wherein the lifting module is used to adjust the height of the movable seat (4) and the rotating disk (18), and the rotating adjustment module is used to adjust the position of the rotating disk (18); and a plurality of auxiliary detection components, wherein the plurality of auxiliary detection components are respectively arranged on both sides of the leak detection disk base (1), and the auxiliary detection components comprise a storage module and a sealing module, wherein the sealing module is used to wrap the pipe connection of the humidifier for auxiliary leak detection, and the storage module is used to collect and carry a plurality of sealing modules.

2. The humidifier leak detection device for a fuel cell engine according to claim 1, characterized in that: The lifting module comprises two fixed seats (5) fixedly mounted on the middle part of the upper end of the leak detection disk base (1), first movable plates (6) being rotatably mounted on both sides of the two fixed seats (5), two second movable plates (7) being rotatably mounted on both sides of the lower middle part of the movable seat (4), the other sides of the two second movable plates (7) being rotatably connected to the two first movable plates (6), a screw rod (8) being rotatably mounted through the connection between the two first movable plates (6) and the second movable plates (7), the screw rod (8) being threadedly connected to the connection between one of the first movable plates (6) and the second movable plate (7), one side of one of the screw rods (8) being fixedly connected to an adjusting wheel (11), a belt pulley (9) being sleeved on the sides of the two screw rods (8) close to the adjusting wheel (11), and a belt (10) being sleeved between the two belt pulleys (9).

3. The humidifier leak detection device for a fuel cell engine according to claim 2, characterized in that: The rotation adjustment module comprises a telescopic rod (13) rotatably mounted on a corner of the movable seat (4); the bottom telescopic end of the telescopic rod (13) is fixedly connected to a second bevel gear (14); one end of one of the screw rods (8) is fixedly connected to a first bevel gear (12) meshing with the second bevel gear (14); the top end of the telescopic rod (13) is sleeved with a rotating toothed disk (15); a rotating rod (16) is rotatably mounted on one side of the movable seat (4); the bottom of the rotating rod (16) is sleeved with an engaging toothed disk (17) meshing with the telescopic rod (13); the top end of the rotating rod (16) is fixedly connected to one side of the rotating disk (18); the rotating disk (18) and the rotating rod (16) are eccentrically arranged in coordination with each other.

4. The humidifier leak detection device for a fuel cell engine according to claim 1, characterized in that: A plurality of positioning seats (21) are fixedly mounted on both ends of the leak detection tray base (1); the storage module comprises a storage box (22) fixedly mounted on the plurality of positioning seats (21); one side of the positioning seat (21) is arranged in an arc shape to match the storage box (22); a torsion spring (23) is arranged inside the storage box (22); an inlet and outlet are opened on one side of the storage box (22); a storage cable (24) is wound around the outer surface of the torsion spring (23); one end of the storage cable (24) passes through the inlet and outlet.

5. The humidifier leak detection device for a fuel cell engine according to claim 4, characterized in that: The sealing module comprises a positioning rod (25) fixedly connected to one end of the storage cable (24), the outer surface of the positioning rod (25) is rotatably mounted with a first wrapping block (26) and a second wrapping block (27), the other side connection of the first wrapping block (26) and the second wrapping block (27) is fixedly mounted with a connecting plate (33), and the first wrapping block (26) and the second wrapping block (27) are respectively provided with a first sealing gasket (28) and a second sealing gasket (29) on both sides.

6. The humidifier leak detection device for a fuel cell engine according to claim 5, characterized in that: A rubber cover (32) is provided on the top of the first packaging block (26).

7. The humidifier leak detection device for a fuel cell engine according to claim 6, characterized in that: Clamping plates (30) are arranged on both sides of the first wrapping block (26) and the second wrapping block (27), and the clamping plates (30) inside the first wrapping block (26) and the second wrapping block (27) are arranged opposite to each other, a plurality of extrusion springs (31) are arranged between the clamping plate (30) and the first wrapping block (26) or the second wrapping block (27), and a plurality of teeth are arranged on the inner side surface of the clamping plate (30).

8. The humidifier leak detection device for a fuel cell engine according to claim 7, characterized in that: A first fixing plate (34) and a second fixing plate (35) are fixedly mounted on one end of the two connecting plates (33), respectively; a fixing hook (36) is provided on one side of the first fixing plate (34); a rotating handle (37) is rotatably mounted on one side of the second fixing plate (35); a locking ring (38) matched with the fixing hook (36) is provided on one side of the rotating handle (37).

9. The humidifier leak detection device for a fuel cell engine according to claim 1, characterized in that: The leak detection disc base (1), the movable seat (4) and the rotating disc (18) are all provided with through holes in the middle, the through hole between the leak detection disc base (1) and the movable seat (4) is provided with a through pipe (19), and the through holes on the movable seat (4) and the rotating disc (18) are provided with bellows (20).

10. The humidifier leak detection device for a fuel cell engine according to claim 9, characterized in that: The through pipe (19) is configured as a telescopic pipe.

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