Device for repairing pipeline from inside and using method

Abstract

The invention belongs to the technical field of aircraft design, and relates to a device for repairing a pipeline from the inside, which comprises a camera, an optical fiber, a communication joint, a hose, a repairing joint, a control handle, a turning air bag, a sealing air bag, a front plugging ball and a rear plugging ball, the optical fiber is arranged in the hose, and the camera is fixedly arranged at one end of the hose and is connected with one end of the optical fiber; the communication connector is connected with the other end of the optical fiber, the control handle is installed at the other end of the hose, a pipe groove for oil to pass through is formed in the pipe wall of the hose, one end of the pipe groove is communicated with a cylinder in the control handle, the other end of the pipe groove is communicated with a turning air bag connected to the front end of the hose in a sleeved mode, and the turning air bag is expanded by controlling oil in the cylinder in the handle to flow to the turning air bag. A gluing hole is formed in the repairing joint, sealant in the hose can be injected into a to-be-repaired part, a high-pressure vent hole is formed in the repairing joint, the high-pressure vent hole is communicated with a sealing air bag sleeved outside the high-pressure vent hole, and external inflation equipment can inflate the sealing air bag through the hose and the high-pressure vent hole; the diameter of the front plugging ball and the diameter of the rear plugging ball are the same as the inner diameter of the hose, and the front plugging ball and the rear plugging ball are installed in the hose front and back during sealant filling to plug sealant.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of aircraft design, and relates to fuel hydraulic pipeline repair technology, in particular to a device for repairing a pipeline from the inside and a use method. BACKGROUND

[0002] Fuel hydraulic pipeline damage and oil leakage is a common fault, and the usual repair method is to find the leakage point and repair from the outside. Because the fuel hydraulic pipeline is generally inside the aircraft, sufficient repair access is required for external repair, and the aircraft needs to be disassembled to a certain extent. For pipelines buried deep, the disassembly workload is very large, and excessive disassembly also damages the aircraft, reducing the service performance and service life of the aircraft. Hydraulic fuel pipelines generally have a certain pressure, and simple repair from the outside will cause oil leakage at the repair location again after a long time, requiring repeated repair. For hydraulic pipelines with high pressure, external repair cannot meet the strength requirements, and only the entire pipeline can be replaced. In order to solve the problems of large workload, high cost and poor quality of external repair of fuel hydraulic pipelines, a device for repairing fuel hydraulic pipelines from the inside and a use method are needed. SUMMARY

[0003] OBJECTIVE In order to solve the problems of large workload, high cost and poor quality of external repair of fuel hydraulic pipelines, a device for repairing fuel hydraulic pipelines from the inside and a use method are needed. A camera with an optical fiber is used to observe the inside of the pipeline to determine the leakage point. A hose is used to deliver sealant to the leakage point, and high pressure is used to inflate the hose end to compact the reinforcement and sealant, thereby completing the internal repair of the pipeline. The present application can quickly and simply repair fuel hydraulic pipeline oil leakage faults, and has high sealing quality and strong pressure resistance.

[0004] TECHNICAL SCHEME A device for internal pipeline repair includes a camera, an optical fiber, a communication connector, a hose, a repair connector, a control handle, a turning airbag, a sealing airbag, a front sealing ball, and a rear sealing ball. The optical fiber is disposed inside the hose. The camera is fixedly installed at one end of the hose and connected to one end of the optical fiber. The communication connector is connected to the other end of the optical fiber. The control handle is installed at the other end of the hose. An oil-conducting groove is provided in the wall of the hose. One end of the groove is connected to a cylinder in the control handle, and the other end is connected to a turning airbag fitted at the front end of the hose. By controlling the flow of oil from the cylinder in the control handle to the turning airbag, the turning airbag is inflated. The repair connector has an adhesive application hole, which allows sealant from the hose to be injected into the area to be repaired. The repair connector also has a high-pressure vent, which is connected to the sealing airbag fitted outside it. An external inflation device can inflate the sealing airbag through the hose and the high-pressure vent. The front and rear sealing balls have the same diameter as the inner diameter of the hose and are installed one after the other inside the hose during sealant application to seal the sealant.

[0005] Furthermore, the front end of the repair connector has a through hole and a sealing ring is installed thereto, which is used to fix the camera; the outer circumference of the middle part of the repair connector has four through holes, which can be used to inject sealant into the part to be repaired; the outer circumference of the rear part of the repair connector has four through holes that communicate with the sealing airbag, which can be used to inject high-pressure gas into the sealing airbag.

[0006] Furthermore, the camera is interference-fitted with the sealing ring and fixed by friction. The sealing ring is installed in the opening at the end of the repair joint by adhesive bonding, and the repair joint is installed at the end of the hose by adhesive bonding.

[0007] Furthermore, the rear end of the repair joint is equipped with a cutting edge. When the sealing airbag is injected with high-pressure gas and expands, it will be evenly cut by the cutting edge, thus separating the sealing airbag from the repair joint.

[0008] Further, the handle includes a handle body, an upper piston, an upper sealing ring, an upper reset spring, a lower piston, a lower sealing ring, a lower reset spring, a left piston, a left sealing ring, a left reset spring, a right piston, a right sealing ring, a right reset spring, an upper-lower piston connecting rod, and a left-right piston connecting rod. The upper reset spring is installed in the upper part of the cylinder of the handle body, the upper piston is installed on the upper part of the upper reset spring, the upper sealing ring is installed on the upper part of the upper piston and is connected with the upper part of the cylinder of the handle body through the outer ring thread, the lower reset spring is installed in the lower part of the cylinder of the handle body, the lower piston is installed on the lower part of the lower reset spring, the lower sealing ring is installed on the lower part of the lower piston and is connected with the lower part of the cylinder of the handle body through the outer ring thread, the left reset spring is installed in the left part of the cylinder of the handle body, the left piston is installed on the left part of the left reset spring, the left sealing ring is installed on the left part of the left piston and is connected with the left part of the cylinder of the handle body through the outer ring thread, the right reset spring is installed in the right part of the cylinder of the handle body, the right piston is installed on the right part of the right reset spring, the right sealing ring is installed on the right part of the right piston and is connected with the right part of the cylinder of the handle body through the outer ring thread. One end of the handle body is connected with the hose through gluing, and the other end is connected with the air nozzle connector through thread.

[0009] Further, the turning air bag includes an upper air bag, a lower air bag, a left air bag and a right air bag. The upper air bag is connected with the hose through gluing and is communicated with the upper cylinder of the handle body through the pipe groove on the hose wall, the lower air bag is connected with the hose through gluing and is communicated with the lower cylinder of the handle body through the pipe groove on the hose wall, the left air bag is connected with the hose through gluing and is communicated with the left cylinder of the handle body through the pipe groove on the hose wall, and the right air bag is connected with the hose through gluing and is communicated with the right cylinder of the handle body through the pipe groove on the hose wall. When the hydraulic oil in the cylinder of the handle body flows into the air bag through the pipe groove on the hose wall, the air bag on one side expands, the hose bends to the side opposite to the air bag, and the angle adjustment of the joint is realized.

[0010] Further, the sealing air bag is provided with a sealing reinforcing member which is glued on the outer ring of the air bag. The sealing reinforcing member includes an inner ring reinforcing sheet, an outer ring reinforcing sheet and a hinge rivet. The inner ring reinforcing sheet is a metal sheet with parallel edges and is glued on the outer ring of the air bag. The outer ring reinforcing sheet is a metal sheet with parallel edges and is at a certain angle with the inner ring reinforcing sheet. The outer ring reinforcing sheet is connected with the inner ring reinforcing sheet through the hinge rivet.

[0011] Further, the upper-lower piston connecting rod and the left-right piston connecting rod are C-shaped metal rods which can drive the upper and lower pistons to move together. When the connecting rod is pressed downward, the upper piston is compressed and the lower piston is stretched, so that the upper air bag expands and the lower air bag shrinks, thereby enhancing the turning efficiency of the hose.

[0012] Further, the sealing air bag is a corrugated air bag structure made of rubber; the inner ring of the sealing air bag has four areas with relatively thin wall thickness opposite to the four through holes at the rear of the repair joint; when the pressure is low, the areas with relatively thin wall thickness can withstand the pressure and remain intact; when the pressure is high, the areas with relatively thin wall thickness break, so that the high-pressure gas flow of the hose enters the sealing air bag, the sealing air bag expands to drive the sealing reinforcement to move to the inner wall of the pipeline; the inner and outer rings of the sealing air bag have relatively thick wall thickness, and the two side walls have relatively thin wall thickness; after the sealing reinforcement is extruded to the inner wall of the pipeline, the sealing air bag expands to the two sides, the two side walls have relatively thin wall thickness, and when the pressure reaches a certain degree, the cutting knife edge at the end of the repair joint cuts the two sides of the sealing air bag to make it break, and the outer ring of the sealing air bag and the sealing reinforcement are separated from the repair joint; the outer ring of the sealing air bag and the sealing reinforcement are adhered to the inner wall of the oil leakage point of the pipeline by the sealing glue, and the repair of the oil leakage point is completed.

[0013] A method for using the device, comprising the following steps: Step 1: Put one end of the repair joint into the pipeline, and use the operating handle to deflect the hose end when encountering a pipeline bend to facilitate the passage of the hose; Step 2: Connect the communication joint with a mobile phone or computer, and observe the internal condition of the pipeline through the camera until the oil leakage point is found; Step 3: Pull out the camera through the optical fiber, and insert the front plugging ball into the hose from the end of the operating handle; Step 4: After injecting the sealing glue into the hose from the end of the operating handle, insert the rear plugging ball; Step 5: Connect the air pump to the air nozzle joint at the end of the operating handle, inject air to push the front plugging ball, the sealing glue, and the rear plugging ball to move forward in the hose, and the pressure is not high at this time; after the front plugging ball reaches the end of the repair joint, the through hole in front of the repair joint is plugged, and the sealing glue is injected into the inner wall of the oil leakage point through the four through holes in the middle of the repair joint; when the injection of the sealing glue is completed, the rear plugging ball is extruded to the front plugging ball, and at this time, the rear plugging ball plugs the four through holes in the middle of the repair joint to prevent high-pressure gas from flowing out from the four through holes; Step 6: Increase the pressure of the external air pump to increase the pressure in the hose, and the high-pressure gas presses the areas with relatively thin wall thickness of the inner ring of the sealing air bag from the four through holes at the rear of the repair joint until the areas with relatively thin wall thickness break, the high-pressure gas flow enters the sealing air bag, and the sealing air bag expands to drive the sealing reinforcement to move to the inner wall of the pipeline; continue to increase the air pressure, and the sealing air bag expands to the two sides, the two side walls have relatively thin wall thickness, and when the pressure reaches a certain degree, the cutting knife edge at the end of the repair joint cuts the two sides of the sealing air bag to make it break, and the outer ring of the sealing air bag and the sealing reinforcement are separated from the repair joint; the outer ring of the sealing air bag and the sealing reinforcement are adhered to the inner wall of the oil leakage point of the pipeline by the sealing glue, and the repair of the oil leakage point is completed.

[0014] Advantages The application discloses a device for repairing a pipeline from inside and a use method. The device is used for observing the inside of the pipeline by a camera with an optical fiber, determining a leakage point, conveying sealant to the leakage point through a hose, and inflating the end of the hose by high-pressure gas to compact the reinforcement and the sealant, so that the pipeline is repaired from inside. The device solves the problems of large workload, high cost and poor quality in repairing the fuel hydraulic pipeline from outside. The device is used for observing the inner wall of the pipeline by the camera, determining the position of the leakage point, and being simple to operate and accurate in positioning. The device is used for controlling the deflection of the hose by four air bags, so that the hose is convenient to pass through the narrow pipeline and the camera is convenient to observe the surroundings. The device is used for preventing the sealant from remaining in the hose to block the hose by two small balls blocking the sealant. The blocking heads made of the small balls are convenient to pass through the hose, and can be applied to complex pipeline structures. The two small balls are arranged in front of and behind each other, the front small ball blocks the front through hole of the repairing joint, the sealant is injected to the surroundings, the rear small ball blocks the middle four through holes of the repairing joint, high-pressure gas is not leaked, and only flows into the air bag from the rear four through holes of the repairing joint. The device realizes the process of injecting the sealant to the surroundings of the leakage point, and repairing the leakage point by the reinforcement and the outer ring of the air bag. The device is used for repairing the leakage point by the grid-shaped metal reinforcement and the outer ring of the air bag, so that the sealing quality of the repaired position is high, the pressure resistance is strong, the device is convenient to produce, practical, easy to popularize and apply, and has great value. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a device for repairing a pipeline from inside. Figure 2 It is an exploded view of the device for repairing the pipeline from inside. In the device, 1 is a camera, 2 is an optical fiber, 3 is a USB joint, 4 is a hose, 5 is a repairing joint, 6 is a sealing ring, 7 is a handle, 8 is a turning air bag, 9 is a sealing reinforcement, 10 is a sealing air bag, 11 is a front blocking ball, 12 is a rear blocking ball, and 13 is an air nozzle joint.

[0016] Figure 3 It is a schematic view of the handle. In the device, 4 is the hose, 13 is the air nozzle joint, 14 is a handle main body, 15 is an upper piston, 16 is an upper sealing ring, 17 is an upper return spring, 18 is a lower piston, 19 is a lower sealing ring, 20 is a lower return spring, 21 is a left piston, 22 is a left sealing ring, 23 is a left return spring, 24 is a right piston, 25 is a right sealing ring, 26 is a right return spring, 47 is an upper and lower piston connecting rod, and 48 is a left and right piston connecting rod.

[0017] Figure 4 It is a schematic view of the turning air bag. In the device, 4 is the hose, 5 is the repairing joint, 27 is an upper air bag, 28 is a lower air bag, 29 is a left air bag, 30 is a right air bag, and 31 is an upper air bag.

[0018] Figure 5 is the schematic diagram of the reinforcing piece; Wherein, 32-inner ring reinforcing piece, 33-outer ring reinforcing piece, 34-hinge rivet.

[0019] Figure 6 is the schematic diagram of the hose structure; Wherein, 35-hose inner wall, 36-hose end clamping slot (for installing the turning air bag), 37-hose wall pipe slot (for allowing hydraulic oil to pass through, driving the turning air bag).

[0020] Figure 7 is the schematic diagram of the repair joint structure.

[0021] Wherein, 38-repair joint front through hole (for installing the camera), 39-repair joint middle through hole (for injecting sealant to the four directions), 40-repair joint rear through hole (for injecting high-pressure air to the sealing air bag to make it expand), 49-repair joint end knife edge (for uniformly cutting the sealing air bag).

[0022] Figure 8 is the schematic diagram of the handle main body structure.

[0023] Wherein, 41-upper cylinder body, 42-lower cylinder body, 43-left cylinder body, 44-right cylinder body, 45-cylinder body connecting port (for connecting the hose pipe slot), 46-through hole (one side for connecting the hose, the other side for connecting the air nozzle joint).

[0024] Figure 9 is the schematic diagram of the front and rear plugging balls injecting sealant.

[0025] Wherein, 4-hose, 5-repair joint, 8-turning air bag, 10-sealing air bag, 11-front plugging ball, 12-rear plugging ball, 38-repair joint front through hole (for installing the camera), 39-repair joint middle through hole (for injecting sealant to the four directions), 40-repair joint rear through hole (for injecting high-pressure air to the sealing air bag to make it expand).

[0026] Figure 10 is the schematic diagram of the front and rear plugging balls injecting high-pressure gas.

[0027] Wherein, 4-hose, 5-repair joint, 8-turning air bag, 10-sealing air bag, 11-front plugging ball, 12-rear plugging ball, 38-repair joint front through hole (for installing the camera), 39-repair joint middle through hole (for injecting sealant to the four directions), 40-repair joint rear through hole (for injecting high-pressure air to the sealing air bag to make it expand). DETAILED DESCRIPTION

[0028] The application will be further described below in conjunction with the drawings. Reference Figures 1-10 An embodiment of the present application proposes a device and method for repairing a pipeline from the inside. The device comprises a camera 1, an optical fiber 2, a USB connector 3, a hose 4, a repair connector 5, a sealing ring 6, a handle 7, a turning air bag 8, a sealing reinforcement 9, a sealing air bag 10, a front blocking ball 11, a rear blocking ball 12, and an air nozzle connector 13. The camera 1 is connected to one end of the optical fiber 2, and the USB connector 3 is connected to the other end of the optical fiber. The USB connector 3 can be connected to a mobile phone, a computer, or other display devices. The camera 1 is connected to the sealing ring 6 by interference fit and is fixed by friction. The sealing ring 6 is installed in the opening at the end of the repair connector 5 by adhesive bonding. The repair connector 5 is installed at the end of the hose 4 by adhesive bonding. The turning air bag 8 is installed in the groove at the end of the hose 4 by adhesive bonding. The handle 7 is installed at the other end of the hose 4 by adhesive bonding. The repair connector 5 is installed with the sealing air bag 10 by adhesive bonding. The sealing air bag 10 is installed with the sealing reinforcement 9 by adhesive bonding. The front blocking ball 11 and the rear blocking ball 12 have the same diameter as the inner diameter of the hose. They are installed in the hose in front of and behind each other to block the sealant when filling the sealant.

[0029] The handle 7 comprises a handle body 14, an upper piston 15, an upper sealing ring 16, an upper return spring 17, a lower piston 18, a lower sealing ring 19, a lower return spring 20, a left piston 21, a left sealing ring 22, a left return spring 23, a right piston 24, a right sealing ring 25, a right return spring 26, an upper and lower piston connecting rod 47, and a left and right piston connecting rod 48. The upper return spring 17 is installed in the upper cylinder of the handle body 14. The upper piston 15 is installed on the upper part of the upper return spring 17. The upper sealing ring 16 is installed on the upper part of the upper piston 15 and is connected to the upper cylinder of the handle body 14 by the outer thread. The lower return spring 23 is installed in the lower cylinder of the handle body 14. The lower piston 18 is installed on the lower part of the lower return spring 20. The lower sealing ring 19 is installed on the lower part of the lower piston 18 and is connected to the lower cylinder of the handle body 14 by the outer thread. The left return spring 23 is installed in the left cylinder of the handle body 14. The left piston 21 is installed on the left side of the left return spring 23. The left sealing ring 22 is installed on the left side of the left piston 21 and is connected to the left cylinder of the handle body 14 by the outer thread. The right return spring 26 is installed in the right cylinder of the handle body 14. The right piston 24 is installed on the right side of the right return spring 26. The right sealing ring 25 is installed on the right side of the right piston 24 and is connected to the right cylinder of the handle body 14 by the outer thread. One end of the handle body 14 is connected to the hose 4 by adhesive bonding, and the other end is connected to the air nozzle connector 13 by a thread. The upper and lower piston connecting rod 47 is connected to the end of the upper piston 15 by a thread at one end and to the end of the lower piston 18 at the other end. The left and right piston connecting rod 48 is connected to the end of the left piston 21 by a thread at one end and to the end of the right piston 24 at the other end.

[0030] The turning air bag 8 includes an upper air bag 27, a lower air bag 28, a left air bag 29, and a right air bag 30. The upper air bag 27 is connected to the soft tube 4 by adhesive and is communicated with the upper cylinder of the handle main body 14 through the pipe groove opened on the wall of the soft tube 4. The lower air bag 28 is connected to the soft tube 4 by adhesive and is communicated with the lower cylinder of the handle main body 14 through the pipe groove opened on the wall of the soft tube 4. The left air bag 29 is connected to the soft tube 4 by adhesive and is communicated with the left cylinder of the handle main body 14 through the pipe groove opened on the wall of the soft tube 4. The right air bag 30 is connected to the soft tube 4 by adhesive and is communicated with the right cylinder of the handle main body 14 through the pipe groove opened on the wall of the soft tube 4.

[0031] The sealing reinforcement 9 includes an inner ring reinforcing sheet 31, an outer ring reinforcing sheet 32, and a hinged rivet 33. The inner ring reinforcing sheet 31 is a metal sheet with parallel strips around the circumference, which is connected to the outer circumference of the sealing air bag 10 by adhesive. The outer ring reinforcing sheet 32 is a metal sheet with parallel strips around the circumference, which is at a certain angle with the inner ring reinforcing sheet 31. The end of each strip of the outer ring reinforcing sheet 32 is connected to the end of each strip of the inner ring reinforcing sheet 31 by the hinged rivet 33, so that they form a whole.

[0032] The soft tube 4 is a thick-walled circular tube structure, which is made of rubber for easy movement in the pipeline. The wall of the soft tube 4 is relatively thick, and four pipe grooves for hydraulic oil to pass through are opened on the upper, lower, left, and right walls of the soft tube 4. One end of the pipe groove is communicated with the cylinder on the handle main body 14, and the other end is communicated with the turning air bag 8.

[0033] The repair joint 5 is a tubular structure made of metal processing. A through hole is opened at the front end of the repair joint 5, and a sealing ring 6 is installed to fix the camera 1. Four through holes are opened around the middle of the repair joint 5 to inject sealing glue to the four directions. Four through holes are opened around the rear of the repair joint 5 to communicate with the sealing air bag 10 to inject high-pressure gas into the sealing air bag. The end of the repair joint 5 has a sharp knife edge. When the sealing air bag 10 is inflated by injecting high-pressure gas, it will be uniformly cut by the sharp knife edge, so that the sealing air bag 10 is separated from the device.

[0034] The handle main body 14 is made of metal processing, and has four cylinders on the upper, lower, left, and right sides, which are communicated with the pipe grooves on the wall of the soft tube 4. The cylinders are filled with hydraulic oil for operating the upper air bag 27, the lower air bag 28, the left air bag 29, and the right air bag 30. The handle main body 14 has a through hole in the middle, which has the same diameter as the inner diameter of the soft tube. One end of the through hole has a thread for installing the air nozzle connector 13, and the other end is connected to the soft tube 4 by adhesive.

[0035] The turning air bag 8 includes an upper air bag 27, a lower air bag 28, a left air bag 29, and a right air bag 30, which are corrugated air bag structures. The four air bags are independent of each other and are made of rubber. One end of the air bag has an opening to communicate with the pipe groove on the wall of the soft tube 4. When the hydraulic oil in the cylinder of the handle main body 14 flows into the air bag through the pipe groove on the wall of the soft tube 4, the air bag expands, causing the soft tube 4 to bend to one side.

[0036] The up-down piston connecting rod 47 and the left-right piston connecting rod 48 are C-shaped metal rod structures, which can drive the up-down piston to move together, when the connecting rod is pressed downward, the upper piston 15 is compressed, and the lower piston 18 is stretched, so that the upper air bag 27 is inflated, and the lower air bag 28 is contracted, thereby enhancing the soft tube turning efficiency.

[0037] The sealing reinforcement 9 comprises an inner ring reinforcing sheet 31, an outer ring reinforcing sheet 32 and a hinged rivet 33. The inner ring reinforcing sheet 31 is a ring of parallel metal sheets, and the outer ring reinforcing sheet 32 is a ring of parallel metal sheets, which is at an angle with the inner ring reinforcing sheet 31. The outer ring reinforcing sheet 32 is connected with the inner ring reinforcing sheet 31 by the hinged rivet 33, so as to form a whole, which is similar to a ring of fence structure. When the sealing air bag 10 is inflated, the sealing reinforcement 9 is inflated together until the inner wall of the pipeline.

[0038] The sealing air bag 10 is a corrugated air bag structure, which is made of rubber. The inner ring of the sealing air bag 10 has four areas with thin wall thickness, which are opposite to the four through holes in the rear part of the repair joint 5. When the pressure is low, the areas with thin wall thickness can withstand the pressure and remain intact. When the pressure is high, the areas with thin wall thickness are broken, so that the high-pressure gas flow of the soft tube 4 enters the sealing air bag 10, and the sealing air bag 10 is inflated to drive the sealing reinforcement 9 to move until the inner wall of the pipeline. The inner ring and the outer ring of the sealing air bag 10 have thick wall thickness, and the two side walls have thin wall thickness. When the sealing reinforcement 9 is pressed to the inner wall of the pipeline, the sealing air bag 10 is inflated to the two sides. When the pressure reaches a certain degree, the sharp cutting edge of the repair joint 5 cuts the sealing air bag 10 on the two sides to make it broken, and the outer ring of the sealing air bag 10 and the sealing reinforcement 9 are separated from the repair joint 5. The outer ring of the sealing air bag 10 and the sealing reinforcement 9 are adhered to the inner wall of the pipeline leakage point by sealing glue, and the repair of the leakage point is completed.

[0039] The second embodiment of the present application provides a device for repairing a pipeline from the inside and a use method. The main structure comprises a leakage point inspection device, a soft tube turning device and a pipeline repair device. The leakage point inspection device comprises a camera 1, an optical fiber 2 and a USB connector 3. The soft tube turning device comprises a soft tube 4, a handle 7 and a turning air bag 8. The pipeline repair device comprises a repair joint 5, a sealing ring 6, a sealing reinforcement 9, a sealing air bag 10, a front blocking ball 11 and a rear blocking ball 12.

[0040] The leakage point inspection device: the camera 1 is installed on the through hole at the end of the repair joint 5 through the sealing ring 6, and the internal situation of the pipeline can be observed. The camera 1 transmits video signals to a mobile phone or a computer display device through the optical fiber 2 and the USB connector 3. Through the leakage point inspection device, the internal situation of the pipeline can be checked to determine the position of the pipeline leakage point. After reaching the pipeline leakage point, the camera 1 is pulled out through the optical fiber 2, so that the soft tube is smooth and convenient for subsequent work.

[0041] The hose turning device: the hose 4 is a thick-walled tubular structure, and the hose wall is uniformly distributed with four through holes for circulating hydraulic oil. One end of the through hole is connected with the turning air bag 8 by cementing, and the other end is connected with the operating handle 7. The turning air bag 8 is divided into four air bags, i.e. the upper air bag 27, the lower air bag 28, the left air bag 29 and the right air bag 30. The air bag is a corrugated bag structure, which will expand when the pressure increases and will shrink when the pressure decreases. For example, when the upper air bag 27 expands and the lower air bag 28 shrinks, the hose bends downward, so that the hose turning can be controlled to smoothly pass in the complex pipeline. The operating handle 7 has four cylinders on the upper, lower, left and right, which are communicated with the through holes on the hose 4 wall, and the cylinders are filled with hydraulic oil for operating the turning air bag 8. Each cylinder is provided with a piston, a return spring and a sealing ring. The upper and lower piston connecting rods 47 are connected with the upper piston 15 end and the lower piston 18 end through threads at one end, and the left and right piston connecting rods 48 are connected with the left piston 21 end and the right piston 24 end through threads at one end. The piston connecting rod can drive the two side pistons to move together. For example, when the connecting rod is pressed downward, the upper piston 15 is compressed and the lower piston 18 is stretched, so that the upper air bag 27 expands and the lower air bag 28 shrinks, the hose 4 bends downward and the turning efficiency is enhanced.

[0042] The pipeline repair device and the operation process are as follows.

[0043] First, from the end of the handle 7, the front ball 11 is inserted into the hose 4; then the sealant is injected into the hose 4; then the rear ball 12 is inserted; finally, the air pump is connected to the air nozzle joint 13 to inject air; the front ball 11, the sealant and the rear ball 12 move forward in the hose 4. Due to the existence of the front and rear balls, the sealant cannot flow randomly in the hose, and the residual sealant in the hose is reduced. The ball-shaped ball passes through the hose better. When the front ball 11 reaches the end of the repair joint 5, the seal ring 6 can be squeezed to block the through hole left for the camera at the front end of the repair joint 5. The sealant is injected into the inner wall of the oil leakage point through the four through holes in the middle of the repair joint 5. When the rear ball 12 is extruded to the front ball, the rear ball 12 can block the four through holes in the middle of the repair joint 5 at this time. At this time, the pressure of the air pump is increased, and the high-pressure gas can only flow from the four through holes at the rear of the repair joint 5 to the thinner area of the inner circle of the sealed air bag 10, until the thinner area is broken, and the high-pressure gas flow enters the sealed air bag 10, so that the air bag expands and drives the sealing reinforcement 9 to move to the inner wall of the pipeline. Continue to increase the air pressure, the sealed air bag 10 expands to both sides, the thickness of the two side walls is thinner, and when the air pressure reaches a certain degree, the sharp cutting edge at the end of the repair joint 5 cuts the sealed air bag 10 on both sides to make it break, and the outer circle of the sealed air bag 10 and the sealing reinforcement 9 are separated from the repair joint 5. The outer circle of the sealed air bag 10 and the sealing reinforcement 9 are adhered to the inner wall of the pipeline oil leakage point by the sealant, and the repair of the oil leakage point is completed. The excess sealant is sucked by negative pressure, and the sharp cutting edge at the end of the repair joint 5 is repeatedly scraped in the repair area to reduce the obstruction caused by the repair, and the device is extracted to complete the repair.

[0044] The third embodiment of the present application provides a device for repairing a pipeline from the inside, and the specific use method is as follows: 1. Put one end of the repair joint 5 into the pipeline, and use the handle 7 to deflect the end of the hose 4 when encountering a pipeline bend to facilitate the passage of the hose 4.

[0045] 2. Connect the USB joint 3 with a mobile phone or computer, and observe the internal condition of the pipeline through the camera 1 until the oil leakage point is found.

[0046] 3. Pull out the camera 1 through the optical fiber 2, and insert the front ball 11 into the hose 4 from the end of the handle 7.

[0047] 4. After injecting the sealant into the hose 4 from the end of the handle 7, insert the rear ball 12.

[0048] 5. Connect the air pump to the air nozzle connector 13 at the end of the operating handle 7, inject air to push the front sealing ball 11, sealant, and rear sealing ball 12 forward in the hose 4. The pressure does not need to be too high at this time. After the front sealing ball 11 reaches the end of the repair connector 5, it can seal the through hole left for the camera at the front end of the repair connector 5. The sealant is injected into the inner wall of the oil leak point through the four through holes in the middle of the repair connector 5. When the sealant is injected, the rear sealing ball (12) squeezes against the front sealing ball. At this time, the rear sealing ball 12 can just seal the four through holes in the middle of the repair connector 5 to prevent high pressure gas from flowing out from the four through holes in the middle.

[0049] 6. Increase the air pump pressure to increase the pressure inside hose 4. High-pressure gas is forced from the four through holes at the rear of the repair joint 5 into the thinner area of ​​the inner ring of the sealing airbag 10 until the thinner area ruptures. The high-pressure gas flow enters the sealing airbag 10, causing it to expand and move the sealing reinforcement 9 to the inner wall of the pipeline. Continue to increase the air pressure, and the sealing airbag 10 expands to both sides, where the walls are thinner. Once the air pressure reaches a certain level, the sharp edge at the end of the repair joint 5 cuts the two sides of the sealing airbag 10, causing it to rupture. The outer ring of the sealing airbag 10 and the sealing reinforcement 9 separate from the repair joint 5. The outer ring of the sealing airbag 10 and the sealing reinforcement 9 are then bonded to the inner wall of the oil leak point in the pipeline with sealant, completing the repair of the oil leak.

[0050] This invention uses a fiber optic camera to observe the inside of the pipeline and pinpoint the leak. Sealant is then delivered to the leak point via a flexible hose, and high pressure is used to expand the hose end, compacting the reinforcing member and sealant to complete the repair of the pipeline from the inside. This invention can quickly and easily repair fuel hydraulic pipeline leaks, providing high-quality sealing and strong pressure resistance. The invention has a clear principle, is easy to manufacture, highly practical, and easy to promote and apply, making it of significant value.

Claims

1. An apparatus for internally repairing a pipe, characterized by, It comprises a camera (1), an optical fiber (2), a communication connector (3), a hose (4), a repair connector (5), a handle (7), a turning air bag (8), a sealing air bag (10), a front sealing ball (11) and a rear sealing ball (12). The optical fiber is arranged inside the hose, the camera is fixedly installed at one end of the hose and connected with one end of the optical fiber, the communication connector is connected with the other end of the optical fiber, the handle (7) is installed at the other end of the hose, a pipe groove for oil is arranged in the pipe wall of the hose, one end of the pipe groove is communicated with a cylinder in the handle, the other end is communicated with the turning air bag (8) sleeved at the front end of the hose, the turning air bag (8) is expanded by controlling the oil flow direction of the cylinder in the handle; the repair connector (5) is provided with a glue coating hole, the sealant in the hose (4) can be injected to the repaired part, the repair connector (5) is provided with a high-pressure air hole, the high-pressure air hole is communicated with the sealing air bag (10) sleeved outside, the external inflation equipment can inflate the sealing air bag (10) through the hose and the high-pressure air hole; the front sealing ball (11) and the rear sealing ball (12) have the same diameter as the inner diameter of the hose, and are installed in the hose in front of and behind each other when the sealant is added.

2. A device for internally repairing a pipe according to claim 1, characterized in that The repair connector (5) is provided with a through hole at the front end, and is provided with a sealing ring (6), the camera (1) is fixed by the sealing ring; four through holes are arranged on the outer circumference of the middle of the repair connector (5), the sealant can be injected to the repaired part; four through holes are arranged on the outer circumference of the rear part of the repair connector (5) and communicated with the sealing air bag (10), high-pressure gas can be injected to the sealing air bag.

3. A device for internally repairing a pipe according to claim 2, characterized in that The camera (1) is connected with the sealing ring (6) in interference fit, and is fixed by friction, the sealing ring (6) is installed in the opening at the end of the repair connector (5) by gluing, and the repair connector (5) is installed at the end of the hose (4) by gluing.

4. A device for internally repairing a pipe according to claim 3, characterized in that The repair connector (5) is provided with a knife edge at the rear end, when the sealing air bag (10) is inflated by injecting high-pressure gas, it will be uniformly cut by the knife edge, so that the sealing air bag (10) is separated from the repair connector (5).

5. A device for internally repairing a pipe according to claim 4, characterized in that The handle (7) comprises a handle body (14), an upper piston (15), an upper sealing ring (16), an upper reset spring (17), a lower piston (18), a lower sealing ring (19), a lower reset spring (20), a left piston (21), a left sealing ring (22), a left reset spring (23), a right piston (24), a right sealing ring (25), a right reset spring (26), an upper-lower piston connecting rod (47), and a left-right piston connecting rod (48). The upper reset spring (17) is installed in the upper part of the cylinder of the handle body (14), the upper piston (15) is installed on the upper part of the upper reset spring (17), the upper sealing ring (16) is installed on the upper part of the upper piston (15) and is connected with the upper part of the cylinder of the handle body (14) through the outer ring thread, the lower reset spring (23) is installed in the lower part of the cylinder of the handle body (14), the lower piston (18) is installed on the lower part of the lower reset spring (20), the lower sealing ring (19) is installed on the lower part of the lower piston (18) and is connected with the lower part of the cylinder of the handle body (14) through the outer ring thread, the left reset spring (23) is installed in the left part of the cylinder of the handle body (14), the left piston (21) is installed on the left part of the left reset spring (23), the left sealing ring (22) is installed on the left part of the left piston (21) and is connected with the left part of the cylinder of the handle body (14) through the outer ring thread, the right reset spring (26) is installed in the right part of the cylinder of the handle body (14), the right piston (24) is installed on the right part of the right reset spring (26), the right sealing ring (25) is installed on the right part of the right piston (24) and is connected with the right part of the cylinder of the handle body (14) through the outer ring thread, one end of the handle body (14) is connected with the hose (4) through gluing, and the other end is connected with the air nozzle connector (13) through the thread. One end of the upper-lower piston connecting rod (47) is connected with the end of the upper piston (15) through the thread, and the other end is connected with the end of the lower piston (18); one end of the left-right piston connecting rod (48) is connected with the end of the left piston (21) through the thread, and the other end is connected with the end of the right piston (24).

6. A device for internally repairing a pipe according to claim 5, characterized in that The turning air bag (8) comprises an upper air bag (27), a lower air bag (28), a left air bag (29), and a right air bag (30). The upper air bag (27) is connected with the hose (4) through gluing and is communicated with the upper cylinder of the handle body (14) through the pipe groove on the wall of the hose (4), the lower air bag (28) is connected with the hose (4) through gluing and is communicated with the lower cylinder of the handle body (14) through the pipe groove on the wall of the hose (4), the left air bag (29) is connected with the hose (4) through gluing and is communicated with the left cylinder of the handle body (14) through the pipe groove on the wall of the hose (4), and the right air bag (30) is connected with the hose (4) through gluing and is communicated with the right cylinder of the handle body (14) through the pipe groove on the wall of the hose (4). When the hydraulic oil in the cylinder of the handle body (14) flows into the air bag through the pipe groove on the wall of the hose (4), the air bag on one side is inflated, the hose (4) is bent to the side opposite to the air bag, and the angle adjustment of the joint is realized.

7. A device for internally repairing a pipe according to claim 6, characterized in that The sealing air bag (10) is provided with a sealing reinforcing member (9) which is attached to the outer ring of the sealing air bag (10) by means of glue. The sealing reinforcing member (9) comprises an inner ring reinforcing sheet (31), an outer ring reinforcing sheet (32) and a hinge rivet (33). The inner ring reinforcing sheet (31) is a ring of parallel metal sheets which is attached to the outer ring of the sealing air bag (10) by means of glue. The outer ring reinforcing sheet (32) is also a ring of parallel metal sheets which is at an angle to the inner ring reinforcing sheet (31). The end of each metal sheet of the outer ring reinforcing sheet (32) is connected to the end of each metal sheet of the inner ring reinforcing sheet (31) by means of the hinge rivet (33) so that they form a whole.

8. A device for internally repairing a pipe according to claim 7, characterized in that The up and down piston connecting rod (47) and the left and right piston connecting rod (48) are C-shaped metal rods which can drive the up and down piston to move together. When the connecting rod is pressed downward, the up piston (15) is compressed and the down piston (18) is stretched, so that the upper air bag (27) expands and the lower air bag (28) shrinks, thereby enhancing the efficiency of the hose turning.

9. A device for internally repairing a pipe according to claim 8, characterized in that The sealing air bag (10) is a corrugated air bag made of rubber. The inner ring of the sealing air bag (10) has four areas with thinner wall thickness which are opposite to the four through holes in the rear part of the repair joint (5). When the pressure is low, the areas with thinner wall thickness can withstand the pressure and remain intact. When the pressure is high, the areas with thinner wall thickness break, allowing the high-pressure gas flow in the hose (4) to enter the sealing air bag (10) and make the air bag expand and drive the sealing reinforcing member (9) to move until the inner wall of the pipeline. The inner and outer rings of the sealing air bag (10) have thicker wall thickness, and the two sides have thinner wall thickness. When the sealing reinforcing member (9) is pressed against the inner wall of the pipeline, the sealing air bag (10) expands to the two sides, and the two sides have thinner wall thickness. When the air pressure reaches a certain level, the repair joint (5) cuts the sealing air bag (10) on both sides with the knife edge at the end, causing it to break. The outer ring of the sealing air bag (10) and the sealing reinforcing member (9) are separated from the repair joint (5). The outer ring of the sealing air bag (10) and the sealing reinforcing member (9) are adhered to the inner wall of the pipeline leak point by means of sealing glue, completing the repair of the leak point.

10. A method of using the apparatus of claim 9, wherein, The method comprises the following steps: Step 1: Put one end of the repair joint (5) into the pipeline. When encountering a bend in the pipeline, use the operating handle (7) to deflect the end of the hose (4) to facilitate the passage of the hose (4); Step 2: Connect the communication joint (3) to a mobile phone or computer and observe the internal situation of the pipeline through the camera (1) until the leak point is found; Step 3: Pull out the camera (1) through the optical fiber (2) and insert the front plugging ball (11) into the hose (4) from the end of the operating handle (7); Step 4: After injecting sealing glue into the hose (4) from the end of the operating handle (7), insert the rear plugging ball (12). Step 5, use air pump to inject air through air nozzle connector (13) at the end of the operating handle (7), push the front sealing ball (11), sealant and the rear sealing ball (12) in the hose (4) to move forward, at this time the pressure is not high; after the front sealing ball (11) reaches the end of the repair connector (5), seal the hole left for the camera at the front end of the repair connector (5), and inject sealant into the inner wall of the oil leakage point through the four middle holes of the repair connector (5); when the sealant is injected, the rear sealing ball (12) is extruded to the front sealing ball, at this time the rear sealing ball (12) seals the four middle holes of the repair connector (5), avoiding high pressure gas flowing out from the four middle holes; Step 6, increase the pressure of the external air pump to increase the pressure in the hose (4), and make the high pressure gas press from the four rear holes of the repair connector (5) to the area with thinner wall thickness in the inner ring of the sealing air bag (10), until the area with thinner wall thickness is broken, the high pressure gas flows into the sealing air bag (10), making the air bag expand and drive the sealing reinforcement (9) to move to the inner wall of the pipeline; continue to increase the air pressure, the sealing air bag (10) expands to both sides, the wall thickness of both sides is thinner, after the air pressure reaches a certain degree, the end of the repair connector (5) cuts the sealing air bag (10) on both sides to make it break, the outer ring of the sealing air bag (10) and the sealing reinforcement (9) are separated from the repair connector (5); the outer ring of the sealing air bag (10) and the sealing reinforcement (9) are adhered to the inner wall of the pipeline oil leakage point through the sealant, completing the repair of the oil leakage point.

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