Engine fuel pipe sealing detection equipment

Abstract

The invention relates to an engine refueling pipe sealing detection device applied to the field of pipeline sealing detection. The device comprises a test water tank, a test pipe body is placed inside the test water tank, two ends of the test pipe body are respectively connected with a No. 1 end sealing sleeve and a No. 2 end sealing sleeve, surfaces of the No. 1 end sealing sleeve and the No. 2 end sealing sleeve are both provided with depressions, an air supply pipe is penetrated and sealedly connected inside the No. 1 end sealing sleeve, an electromagnetic ring is fixed on the inner wall of the depression in the No. 1 end sealing sleeve, a monitoring mechanism comprises a monitoring disk, and an image collector is embedded and installed around the surface of the monitoring disk, a No. 1 cleaning disk and a No. 2 cleaning disk are respectively installed on the two side surfaces of the monitoring disk, an exhaust pipe is penetrated and installed inside the No. 2 end sealing sleeve, and an expansion piece is sealed and connected to the tail end of the exhaust pipe, and the No. 1 end sealing sleeve and the No. 2 end sealing sleeve are used to perform comprehensive and reliable sealing test operations on the test pipe body during testing.

Description

Technical Field

[0001] The invention relates to an engine fuel pipe sealing detection device, in particular to an engine fuel pipe sealing detection device applied in the field of pipeline sealing detection. Background Art

[0002] The engine fuel pipe is used to provide pipeline support for the engine, thereby ensuring the normal operation of the engine. Since the engine as a power mechanism is extremely important to the operation of the machine, its sealing needs to be tested during production and processing to prevent unqualified fuel pipes from entering the market and affecting the subsequent engine fuel supply. Ventilation is generally used to detect the sealing, but the pipeline will face changes in temperature, pressure, etc. during use, and the results obtained from the sealing detection operation are not comprehensive enough.

[0003] In order to solve the problem of incomplete sealing test results, a certain pipeline sealing test equipment on the market adopts a high-pressure impact combined with sealing test design, which has a certain market share.

[0004] The specification of Chinese invention patent CN202311757894.4 discloses an automobile pipeline sealing detection device, including a base, on which a pipeline installation component and a variable pressure impact detection component are provided; the pipeline installation component includes a spacing adjustment component arranged on the base, the spacing adjustment component connects two vertical frames, the adjacent sides of the two vertical frames are fixedly connected with end pipes, one end of the end pipe away from the vertical frame is fixedly provided with a clamping cover, the external thread of the clamping cover is connected with a threaded sleeve, a pipe to be tested is arranged between the two clamping covers, and the two end pipes are fixedly connected with a connecting pipe; the invention can impact the pipe to be tested with multiple groups of high-pressure air of different pressures by arranging a variable pressure impact detection component, and detect the sealing data of the pipe to be tested after the high-pressure impact, so that the sealing detection data of the pipe to be tested is rich and the detection effect is good.

[0005] The existing pipeline sealing detection combines high pressure shock with sealing test to make the test results more comprehensive. However, when there are initial cracks on the inner wall of the pipeline that do not spread to the outer surface, they will expand under the action of pressure shock, thereby affecting the accuracy of the test results, and improvement is needed. Summary of the invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is to detect hidden cracks on the inner wall surface of the engine refueling pipe, so that this type of refueling pipe can be classified as a defective product on the premise that it can pass the inflation test, thereby improving the accuracy of the refueling pipe sealing test results.

[0007] To solve the above problems, the present invention provides an engine refueling pipe sealing detection device, comprising a test water tank, a test tube body is placed inside the test water tank, two ends of the test tube body are respectively connected to a No. 1 end sealing sleeve and a No. 2 end sealing sleeve, the surfaces of the No. 1 end sealing sleeve and the No. 2 end sealing sleeve close to each other are both provided with depressions, and the diameter of the depression is the same as the outer diameter of the test tube body, the interior of the No. 1 end sealing sleeve is penetrated and sealed with an air supply pipe made of a hose, an electromagnetic ring is fixed on the inner wall of the depression in the No. 1 end sealing sleeve, a monitoring mechanism is connected to the interior of the depression in the No. 1 end sealing sleeve, the monitoring mechanism includes a monitoring disk with a diameter smaller than the inner diameter of the test tube body, and an image collector is embedded and installed around the surface of the monitoring disk, a No. 1 cleaning disk and a No. 2 cleaning disk with the same diameter as the inner diameter of the test tube body are respectively installed on both sides of the monitoring disk, an exhaust pipe made of hard material is penetrated and installed inside the No. 2 end sealing sleeve, and an expansion piece is sealed at the tail end of the exhaust pipe.

[0008] In the above-mentioned engine fuel filler pipe sealing detection equipment, by using the No. 1 end sealing sleeve and the No. 2 end sealing sleeve, a comprehensive and reliable sealing test operation can be performed on the test pipe body during the test.

[0009] As a further improvement of the present application, both the No. 1 cleaning disc and the No. 2 cleaning disc are made of breathable materials, and the surfaces of the No. 1 cleaning disc and the No. 2 cleaning disc on one side close to the electromagnetic ring are coated with a magnetic coating.

[0010] As a further improvement of the present application, the surfaces of the No. 1 end sealing sleeve and the No. 2 end sealing sleeve are provided with plug-in blocks, the bottom wall of the test water tank is provided with plug-in holes matching the plug-in blocks, and there is a magnetic attraction between the plug-in holes and the plug-in blocks.

[0011] As a further improvement of the present application, the depth of the test water tank is greater than the outer diameter of the test tube body, the No. 1 end sealing sleeve and the No. 2 end sealing sleeve are both made of materials with a density greater than that of water, the air supply pipe and the interior of the No. 1 end sealing sleeve are connected by a sliding seal, and a one-way valve is installed inside the exhaust pipe, and the tail end of the air supply pipe is connected to a limit plate.

[0012] As a further improvement of the present application, a detection control system is also included, which includes a linkage processor, to which an image collection module, an analysis module, a warning module and a processing module are connected, the image collection module is connected to the image collector signal, and the processing module is connected to the electromagnetic ring signal.

[0013] As a further improvement of the present application, the air inlet end of the air supply pipe is connected to a gas source, and the gas source is a mixture of an inert gas and fluorescent particles, and the mixing ratio of the fluorescent particles to the inert gas is 1:9-2:8.

[0014] As a further improvement of the present application, a testing method for an engine fuel pipe sealing detection device comprises the following steps:

[0015] S1, first use the No. 1 end sealing sleeve and the No. 2 end sealing sleeve to seal the ends of the test tube body, then perform hot melt adhesive sealing at the connection between the No. 1 end sealing sleeve, the No. 2 end sealing sleeve and the surface of the test tube body, and wait for the hot melt adhesive to air dry and solidify;

[0016] S2, putting the sealed test tube into the test water tank, then snapping and adsorbing the plug-in block into the plug-in hole, restraining and limiting the test tube, and then filling the test water tank with water until the water in the test water tank submerges the test tube;

[0017] S3. Use the air source to inflate the air supply pipe to check whether the expansion piece is expanded and whether there are bubbles in the water tank;

[0018] S4. If bubbles appear in the test water tank, it indicates that the test tube body is unqualified. If the expansion piece expands normally and there are no bubbles in the test water tank, stop supplying air, and pull the air supply pipe until the tail end is flush with the inner wall of the No. 1 end sealing sleeve. Then start the electromagnetic ring to put it in a repulsive state with the No. 2 cleaning disk, push the No. 1 cleaning disk and the No. 2 cleaning disk to move on the inner wall of the test tube body, scrape off the fluorescent particles attached to the inner wall of the test tube body, and use the monitoring disk to check whether there is a fluorescent track on the inner wall of the test tube body. If there is, it indicates that there is an inner seam on the inner wall of the test tube body, which is an unqualified product. If not, it indicates that the test tube body is qualified.

[0019] S5. After the test is completed, the working state of the electromagnetic ring is switched so that it is in an adsorption state with the No. 2 cleaning disk, and the No. 1 cleaning disk and the No. 2 cleaning disk located at the air outlet end of the test tube body are adsorbed to the position of the electromagnetic ring, and the test tube body is taken out of the test water tank, and the No. 1 end sealing sleeve and the No. 2 end sealing sleeve are disassembled from the end of the test tube body to carry out the next round of test operation.

[0020] As another improvement of the present application, small electric extension rods are installed around and through the interior of the No. 1 cleaning tray and the No. 2 cleaning tray, and the small electric extension rods are connected to the processing module signal.

[0021] As another improvement of the present application, the diameter of the No. 1 cleaning disk is larger than the diameter of the No. 2 cleaning disk, and the diameter of the No. 1 cleaning disk is larger than the inner diameter of the electromagnetic ring.

[0022] As a further improvement of the present application, S4 further includes the following steps:

[0023] S41. If the test tube body is made of elastic hose material, when the No. 1 cleaning disk and the No. 2 cleaning disk are moved, it is necessary to start the small electric extension rod to expand outward to expand the hidden cracks covered in the test tube body, and to inflate the air supply pipe again, so that the fluorescent particles in the gas can pass through the No. 2 cleaning disk and fit into the expanded hidden cracks to be detected by the monitoring disk.

[0024] To sum up, by using the No. 1 end sealing sleeve and the No. 2 end sealing sleeve, the ends of the test tube body can be sealed during the test. On the basis of the through-seam detection, a more comprehensive hidden crack detection can also be performed on the test tube body made of rigid material or hose material, thereby further improving the accuracy and comprehensiveness of the test results of the tube body sealing by this device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall appearance structure of the first to third embodiments of the present application;

[0026] Figure 2 Schematic diagram of the internal structure of the test tube body according to the first and second embodiments of the present application;

[0027] Figure 3 This is a diagram showing the internal structure of the No. 1 end sealing sleeve of the first to second embodiments of the present application;

[0028] Figure 4 This is a schematic diagram of the test state of the first implementation mode of the present application;

[0029] Figure 5 This is a diagram of the installation structure of a small electric extension pole according to the second to third embodiments of the present application;

[0030] Figure 6 This is a diagram of the small electric extension pole in the second to third embodiments of the present application;

[0031] Figure 7 Schematic diagram of the crack expansion state of the inner wall of the test tube body after the small electric extension rod is expanded outward in the second to third embodiments of the present application;

[0032] Figure 8 This is a structural diagram of a No. 1 cleaning tray and a No. 2 cleaning tray according to a third embodiment of the present application;

[0033] Fig. 9 This is a schematic diagram of the state of supplementing air supply through the air supply pipe of the third embodiment of the present application.

[0034] Description of the numbers in the figure:

[0035] 1. Test water tank; 2. Test tube body; 3. No. 1 end sealing sleeve; 31. Air supply pipe; 32. No. 1 cleaning plate; 33. Electromagnetic ring; 34. No. 2 cleaning plate; 35. Monitoring plate; 4. No. 2 end sealing sleeve; 41. Exhaust pipe; 42. Expansion piece; 5. Plug hole; 6. Small electric extension rod. DETAILED DESCRIPTION

[0036] Three implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0037] The first implementation method:

[0038] Figure 1-4 The invention discloses an engine fuel pipe sealing detection device, which comprises a test water tank 1, a test tube body 2 is placed inside the test water tank 1, two ends of the test tube body 2 are respectively connected to a No. 1 end sealing sleeve 3 and a No. 2 end sealing sleeve 4, the surfaces of the No. 1 end sealing sleeve 3 and the No. 2 end sealing sleeve 4 close to each other are both provided with depressions, and the diameter of the depression is the same as the outer diameter of the test tube body 2, the interior of the No. 1 end sealing sleeve 3 is penetrated and sealed with an air supply pipe 31 made of a hose, an electromagnetic ring 33 is fixed to the inner wall of the depression in the No. 1 end sealing sleeve 3, a monitoring mechanism is connected to the interior of the depression in the No. 1 end sealing sleeve 3, the monitoring mechanism comprises a monitoring disk 35 with a diameter smaller than the inner diameter of the test tube body 2, and an image collector is embedded and installed around the surface of the monitoring disk 35, a No. 1 cleaning disk 32 and a No. 2 cleaning disk 34 with the same diameter as the inner diameter of the test tube body 2 are respectively installed on the two side surfaces of the monitoring disk 35, an exhaust pipe 41 made of hard material is penetrated and installed inside the No. 2 end sealing sleeve 4, and an expansion member 42 is sealed and connected to the tail end of the exhaust pipe 41;

[0039] The air inlet end of the air supply pipe 31 is connected to a gas source, and the gas source is a mixture of an inert gas and fluorescent particles, and the mixing ratio of the fluorescent particles to the inert gas is 1:9-2:8.

[0040] Specifically, when testing the sealing performance, it is necessary to first sleeve the No. 1 end sealing sleeve 3 and the No. 2 end sealing sleeve 4 onto the two ends of the test tube body 2, and then perform a glue sealing process on the connection between the No. 1 end sealing sleeve 3 and the No. 2 end sealing sleeve 4 and the test tube body 2, and then put the sealed test tube body 2 into the test water tank 1 for plugging and restraining, and then fill the test water tank 1 with water until the test tube body 2 is submerged;

[0041] Ventilate the air supply pipe 31 to check whether bubbles appear in the test water tank 1. If bubbles appear, it indicates that the test tube body 2 is unqualified. If no bubbles appear, enter the next process, pull out a part of the air supply pipe 31 until the limit plate is close to the inner wall of the No. 1 end sealing sleeve 3 (at this time, resistance is felt in the pulling process. The purpose of this operation is to facilitate the movement of the No. 1 cleaning plate 32 and the No. 2 cleaning plate 34 without being intercepted and blocked by the air supply pipe 31), and then start the electromagnetic ring 33 to generate a force of mutual repulsion with the No. 2 cleaning plate 34, so that the No. 1 cleaning plate 32 can scrape off the fluorescent particles attached to the inner wall of the tube body when it moves inside the test tube body 2. If there is a crack in the inner wall (that is, there is a crack in the inner wall but it has not spread to the outer surface, so the test tube body 2 is not in a leaking state), the fluorescent particles will be stuck in the crack in the inner wall, and the fluorescent track will be captured by the image collector on the surface of the monitoring plate 35 closely following the surface of the No. 1 cleaning plate 32, and then a conclusion is drawn that there is a crack in the inner wall.

[0042] The surfaces of the first cleaning disk 32 and the second cleaning disk 34 close to the electromagnetic ring 33 are coated with a magnetic coating;

[0043] Specifically, the design of the magnetic coating allows the electromagnetic ring 33 to switch working states to produce different effects on the No. 1 cleaning disk 32, thereby achieving corresponding pushing and pulling resetting effects.

[0044] The surfaces of the No. 1 end sealing sleeve 3 and the No. 2 end sealing sleeve 4 are both provided with plug-in blocks, the bottom wall of the test water tank 1 is provided with a plug-in hole 5 matching the plug-in block, a permanent magnet is provided in the plug-in block, and an electromagnet is installed at the plug-in hole 5 to achieve magnetic attraction between the plug-in hole 5 and the plug-in block.

[0045] Specifically, the magnetic force between the plug hole 5 and the plug block can effectively constrain and limit the test tube body 2 during the test process, and even if the test tube body 2 is made of a hose, it can maintain a relatively stable straight state.

[0046] The depth of the test water tank 1 is greater than the outer diameter of the test tube body 2. The No. 1 end sealing sleeve 3 and the No. 2 end sealing sleeve 4 are both made of materials with a density greater than that of water. The air supply pipe 31 is connected to the interior of the No. 1 end sealing sleeve 3 by a sliding seal, and a one-way valve is installed inside the exhaust pipe 41. The tail end of the air supply pipe 31 is connected to a limit plate.

[0047] Specifically, the depth value of the test tank 1 ensures that subsequent submergence of the test tube body 2 is possible;

[0048] The density of the No. 1 end sealing sleeve 3 and the No. 2 end sealing sleeve 4 is greater than that of water, which can prevent them from floating upward when water enters, and further ensure the effective restraint connection between the plug-in block and the plug-in hole 5;

[0049] The design of the one-way valve can ensure one-way exhaust of the exhaust pipe 41 and prevent external gas from entering the interior of the test tube body 2 through the exhaust pipe 41 .

[0050] It also includes a detection control system, which includes a linkage processor, to which an image collection module, an analysis module, a warning module and a processing module are connected. The image collection module is connected to the image collector signal, and the processing module is connected to the electromagnetic ring 33 signal.

[0051] Specifically, the image data collected by the image collector is transmitted to the analysis module, and the analysis module analyzes whether the fluorescent track exists, determines whether there is a crack on the inner wall of the test tube body 2, and then makes corresponding prompts and gives corresponding test results, further enhancing the accuracy of the device's test results on the tube body's sealing.

[0052] A testing method for an engine fuel pipe sealing detection device comprises the following steps:

[0053] S1, first use the No. 1 end sealing sleeve 3 and the No. 2 end sealing sleeve 4 to seal the end of the test tube body 2, then perform hot melt adhesive sealing on the connection between the No. 1 end sealing sleeve 3, the No. 2 end sealing sleeve 4 and the surface of the test tube body 2, and wait for the hot melt adhesive to air dry and solidify;

[0054] S2, put the glue-sealed test tube body 2 into the test water tank 1, then snap and adsorb the plug-in block into the plug-in hole 5, constrain and limit the test tube body 2, and then fill water into the test water tank 1 until the water in the test water tank 1 submerges the test tube body 2;

[0055] S3, using the air source to inflate the air supply pipe 31, check whether the expansion member 42 is expanded and test whether there are bubbles in the water tank 1;

[0056] S4, if bubbles appear in the test water tank 1, it indicates that the test tube body 2 is a defective product. If the expansion member 42 expands normally and there are no bubbles in the test water tank 1, stop supplying air, and draw the air supply pipe 31 until the tail end is flush with the inner wall of the No. 1 end sealing sleeve 3, then start the electromagnetic ring 33, so that it is in a repulsive state with the No. 2 cleaning disk 34, push the No. 1 cleaning disk 32 and the No. 2 cleaning disk 34 to move on the inner wall of the test tube body 2, scrape off the fluorescent particles attached to the inner wall surface of the test tube body 2, and use the monitoring disk 35 to check whether there is a fluorescent track on the inner wall of the test tube body 2. If there is, it indicates that there is an inner seam on the inner wall of the test tube body 2, which is a defective product. If not, it indicates that the test tube body 2 is a qualified product.

[0057] S5. After the test is completed, the working state of the electromagnetic ring 33 is switched so that it is in an adsorption state with the No. 2 cleaning disk 34, and the No. 1 cleaning disk 32 and the No. 2 cleaning disk 34 located at the air outlet end of the test tube body 2 are adsorbed to the position of the electromagnetic ring 33, and the test tube body 2 is taken out of the test water tank 1, and the No. 1 end sealing sleeve 3 and the No. 2 end sealing sleeve 4 are disassembled from the end of the test tube body 2 to carry out the next round of test operation.

[0058] The second implementation method:

[0059] Figure 5-7 It is shown that a small electric extension rod 6 is installed around and through the interior of the first cleaning tray 32 and the second cleaning tray 34, and the small electric extension rod 6 is connected to the processing module signal.

[0060] Specifically, when the test tube body 2 is made of a hose material, the cracks on the inner wall will be expanded by the gas due to the sufficient gas flow during inflation, thereby causing the gas to carry the fluorescent particles into the cracks on the inner wall of the test tube body 2, so that the fluorescent particles are stuck in the cracks. However, when the No. 1 cleaning disk 32 moves, the gas supply is stopped. Under the elastic action of the test tube body 2 itself, the cracks on the inner wall are restored to their original fitted state. It is not convenient for the image collector to capture the hidden cracks and the stuck fluorescent particles. At this time, it is necessary to start the small electric extension rod 6 to extend the test tube body 2 at the position of the No. 1 cleaning disk 32 and the No. 2 cleaning disk 34, so as to open the hidden cracks and facilitate the image collector to view the fluorescent trajectory.

[0061] Different from the first embodiment, this embodiment improves and processes the possible masking phenomenon of the test tube body 2 made of elastic hose material during the test process to ensure the accuracy of the image captured by the image collector.

[0062] The third implementation method:

[0063] Figure 8-9 It is shown that the diameter of the No. 1 cleaning disk 32 is larger than the diameter of the No. 2 cleaning disk 34, and the diameter value of the No. 1 cleaning disk 32 is larger than the inner diameter value of the electromagnetic ring 33. The No. 1 cleaning disk 32 and the No. 2 cleaning disk 34 are both made of breathable materials.

[0064] A testing method for an engine fuel pipe sealing detection device, S4 also includes the following steps:

[0065] S41. If the test tube body 2 is made of elastic hose material, when the No. 1 cleaning disk 32 and the No. 2 cleaning disk 34 move, the small electric extension rod 6 needs to be started to expand outward to expand the hidden cracks covered in the test tube body 2, and to inflate the air supply pipe 31 again, so that the fluorescent particles in the gas can pass through the No. 2 cleaning disk 34 and fit into the expanded hidden cracks to be detected by the monitoring disk 35.

[0066] Specifically, the test tube body 2 is made of an elastic hose material. When inflated, due to the small amount of inflation, the hidden cracks will be in a closed state, and the fluorescent particles cannot enter the cracks. In this way, even if the small electric extension rod 6 is used to expand the tube body later, it is not conducive to the image collector to capture the fluorescent track. Therefore, it is necessary to adopt this embodiment;

[0067] When the inflation volume is insufficient, it is necessary to start the small electric extension rod 6 first to expand the test tube body 2 so that the hidden cracks on the inner wall of the test tube body 2 are opened, and then air is continued to be supplied to the test tube body 2 through the air supply pipe 31. With the help of air permeability and the size difference between the No. 2 cleaning disk 34 and the inner wall of the test tube body 2, the fluorescent particles can smoothly enter the opened inner wall cracks. Then, the small electric extension rod 6 is closed, and the electromagnetic ring 33 is used to make the No. 1 cleaning disk 32 retreat to the original position of the No. 2 cleaning disk 34, and then continue to move forward. After completing the inner wall scraping operation, continue to use the small electric extension rod 6 to extend outward to open the cracks with fluorescent particles, so that the image collector can collect relevant images.

[0068] Different from the second embodiment, this embodiment performs supplementary monitoring on the hidden cracks in the test tube body 2 that have not been detected, thereby further improving the comprehensiveness and reliability of the sealing test results.

[0069] In summary, the testing device, using the No. 1 end sealing sleeve 3 and the No. 2 end sealing sleeve 4, can seal the ends of the test tube body 2 during the test. On the basis of detecting the through-seam (i.e., the crack from the inner wall to the outer wall), it can also perform a more comprehensive hidden crack detection on the test tube body 2 made of rigid material or hose material, thereby further improving the accuracy and comprehensiveness of the test results of the tube body sealing by the device.

[0070] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. An engine fuel pipe sealing detection device, comprising a test water tank (1), characterized in that: A test tube body (2) is placed inside the test water tank (1), and two ends of the test tube body (2) are respectively connected to a No. 1 end sealing sleeve (3) and a No. 2 end sealing sleeve (4), and surfaces of the No. 1 end sealing sleeve (3) and the No. 2 end sealing sleeve (4) close to each other are both provided with a recess, and the diameter of the recess is the same as the outer diameter of the test tube body (2), and an air supply pipe (31) made of a hose is passed through and sealed inside the No. 1 end sealing sleeve (3), and an electromagnetic ring (33) is fixed to the inner wall of the recess in the No. 1 end sealing sleeve (3), and the No. 1 end sealing sleeve (3) is provided with a plurality of concave and convex holes, and the concave and concave holes are provided with a plurality of concave and concave ... A monitoring mechanism is connected to the recessed interior of the sealing sleeve (3), the monitoring mechanism comprising a monitoring plate (35) having a diameter smaller than the inner diameter of the test tube body (2), and an image collector is mounted and inlaid around the surface of the monitoring plate (35), and a first cleaning plate (32) and a second cleaning plate (34) having the same diameter as the inner diameter of the test tube body (2) are respectively mounted on the two side surfaces of the monitoring plate (35), an exhaust pipe (41) made of a hard material is installed through the interior of the second end sealing sleeve (4), and an expansion member (42) is sealed and connected to the tail end of the exhaust pipe (41); The diameter of the first cleaning disk (32) is greater than the diameter of the second cleaning disk (34), and the diameter value of the first cleaning disk (32) is greater than the inner diameter value of the electromagnetic ring (33).

2. The engine fuel pipe sealing detection device according to claim 1, characterized in that: The first cleaning disc (32) and the second cleaning disc (34) are both made of air-permeable materials, and the surfaces of the first cleaning disc (32) and the second cleaning disc (34) on one side close to the electromagnetic ring (33) are coated with a magnetic coating.

3. The engine fuel pipe sealing detection device according to claim 2, characterized in that: The surfaces of the No. 1 end sealing sleeve (3) and the No. 2 end sealing sleeve (4) are both provided with plug-in blocks, and the bottom wall of the test water tank (1) is provided with plug-in holes (5) matching the plug-in blocks.

4. The engine fuel pipe sealing detection device according to claim 3, characterized in that: The depth of the test water tank (1) is greater than the outer diameter of the test tube body (2); the No. 1 end sealing sleeve (3) and the No. 2 end sealing sleeve (4) are both made of a material having a density greater than that of water; the air supply pipe (31) is connected to the interior of the No. 1 end sealing sleeve (3) in a sliding seal; a one-way valve is installed inside the exhaust pipe (41); and the tail end of the air supply pipe (31) is connected to a limit plate.

5. The engine fuel pipe sealing detection device according to claim 4, characterized in that: It also includes a detection control system, which includes a linkage processor, to which an image collection module, an analysis module, a warning module and a processing module are connected, the image collection module is signal-connected to an image collector, and the processing module is signal-connected to an electromagnetic ring (33).

6. The engine fuel pipe sealing detection device according to claim 5, characterized in that: The air inlet end of the air supply pipe (31) is connected to an air source, and the air source is a mixture of an inert gas and fluorescent particles, and the mixing ratio of the fluorescent particles to the inert gas is 1:9-2:

8.

7. The engine fuel pipe sealing detection device according to claim 6, characterized in that: Small electric extension rods (6) are installed around and through the interior of the first cleaning tray (32) and the second cleaning tray (34), and the small electric extension rods (6) are connected to the processing module signals.

8. A method for testing the engine fuel pipe sealing detection device according to claim 7, characterized in that: The following steps are involved: S1, firstly, using a No. 1 end sealing sleeve (3) and a No. 2 end sealing sleeve (4) to seal the ends of the test tube body (2), and then performing hot melt adhesive sealing treatment on the connection between the No. 1 end sealing sleeve (3), the No. 2 end sealing sleeve (4) and the surface of the test tube body (2), and waiting for the hot melt adhesive to air dry and solidify; S2, placing the sealed test tube body (2) into the test water tank (1), then snapping and adsorbing the plug-in block into the plug-in hole (5), restraining and limiting the test tube body (2), and then filling the test water tank (1) with water until the water in the test water tank (1) submerges the test tube body (2); S3, using an air source to inflate the air supply pipe (31), checking whether the expansion member (42) is expanded and testing whether there are bubbles in the water tank (1); S4. If bubbles appear in the test water tank (1), it indicates that the test tube body (2) is a defective product. If the expansion member (42) expands normally and there are no bubbles in the test water tank (1), stop supplying air, and draw the air supply pipe (31) until the tail end is flush with the inner wall of the No. 1 end sealing sleeve (3). Then, start the electromagnetic ring (33) to put it in a repulsive state with the No. 2 cleaning disk (34), push the No. 1 cleaning disk (32) and the No. 2 cleaning disk (34) to move on the inner wall of the test tube body (2), scrape off the fluorescent particles attached to the inner wall surface of the test tube body (2), and use the monitoring disk (35) to check whether there is a fluorescent track on the inner wall of the test tube body (2). If there is, it indicates that there is an inner seam on the inner wall of the test tube body (2), and it is a defective product. If not, it indicates that the test tube body (2) is a qualified product. S5. After the test is completed, the working state of the electromagnetic ring (33) is switched so that it is in an adsorption state with the second cleaning disk (34), and the first cleaning disk (32) and the second cleaning disk (34) located at the gas outlet end of the test tube body (2) are adsorbed to the position of the electromagnetic ring (33), and the test tube body (2) is taken out of the test water tank (1), and the first end sealing sleeve (3) and the second end sealing sleeve (4) are separated from the end of the test tube body (2) to carry out the next round of test operation.

9. The testing method according to claim 8, characterized in that: S4 also includes the following steps: S41. If the test tube body (2) is made of an elastic hose material, when the No. 1 cleaning plate (32) and the No. 2 cleaning plate (34) are moved, the small electric extension rod (6) needs to be activated to expand outward to expand the hidden cracks covered in the test tube body (2), and to inflate the air supply pipe (31) again, so that the fluorescent particles in the gas can pass through the No. 2 cleaning plate (34) and fit into the expanded hidden cracks to be detected by the monitoring plate (35).

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