Pipeline test assembly and process of aircraft based on compressed gas

Abstract

The invention relates to an aircraft pipeline test assembly based on compressed gas, and the assembly is characterized in that the assembly comprises a pipeline leakage test section which carries out the pipe wall damage leakage detection of a to-be-detected pipeline (15) used by an underwater navigation carrier; a pressure gauge and a flow meter are arranged at two ends of the to-be-detected pipeline (15); the pipeline leakage experiment section is provided with a testing device (42) used for detecting a to-be-detected pipeline (15) and / or an up-down pipe device (41) used for up-down pipe connection of the to-be-detected pipeline (15). The device is reasonable in design, compact in structure and convenient to use.

Description

Technical Field

[0001] The present invention relates to a pipeline test assembly and process for a compressed gas based aircraft. Background Art

[0002] At present, the compressed gas system is an important support system for underwater vehicles. The system uses an air compressor to generate compressed gas of a certain pressure, which is transported by pipelines and stored in gas cylinders for use by other machinery and systems on the ship. Due to the complex background noise on the ship, some compressed gas pipelines are restricted by radiation, high temperature, spatial layout, etc., and it is difficult to detect when a trace leak occurs, which is not conducive to the navigation safety of the ship. How to solve the problem of detecting trace leaks has become a technical problem that needs to be solved urgently. Summary of the invention

[0003] The technical problem to be solved by the present invention is generally to provide a demonstration test bench for detecting micro-leakage of compressed gas pipelines of underwater navigation vehicles. Aiming at the problem of detecting micro-leakage of compressed gas pipelines of ships, the present invention designs and builds a comprehensive test bench for micro-leakage of compressed gas pipelines of ships, which is used to simulate the micro-leakage of gas pipelines leaking out of the pipe wall, and realizes the online monitoring of micro-leakage of the system through the loaded acoustic emission detection system. The parent case is a demonstration test bench and method for detecting compressed gas pipelines of underwater navigation vehicles, with application date 202010782948.2; application date: 2020-08-06. To solve the above problems, the technical solution adopted by the present invention is: A pipeline test assembly for a compressed gas-based aircraft, comprising a compressed gas intake section, a pipeline leakage test section and a compressed gas discharge section connected in sequence; Compressed gas intake section compresses the air into the compressed air required underwater for detection Used for pipeline leakage test section; pressure gauge and flow meter are set in the compressed gas intake section; The pipeline leakage test section is used to test the pipeline wall damage and leakage of the pipeline to be tested used by the underwater navigation vehicle; there are pressure gauges and flow meters at both ends of the pipeline to be tested; The compressed gas discharge section is connected to the output end of the pipeline leakage test section; In the pipeline leakage test section, the pipeline to be tested includes a parallel calibration pipeline, a plurality of pipelines with leakage holes and opening positions, and a plurality of pipelines with leakage holes and opening diameters; Check pipelines to simulate pipeline conditions without leaks; Open the leakage hole opening position pipeline to simulate the pipeline leakage situation at different opening positions; The leakage hole opening diameter pipeline is used to simulate the leakage of pipelines with different opening diameters.

[0004] As a further improvement of the above technical solution: The compressed gas intake section includes an air compressor, a gas cylinder, an input pressure gauge and an adjustable pressure reducing valve connected in sequence; The air compressor stores the compressed gas into gas cylinders; Gas cylinders store compressed gas and are controlled by the switch of the stop valve at their outlet; The adjustable pressure reducing valve adjusts the compressed gas pressure output from the gas cylinder and inputs the compressed air flow inlet of the pipeline leakage test section; The first safety valve is connected to the gas cylinder to control the safety pressure of the gas cylinder; Input pressure gauge, used to monitor the output pressure of the gas cylinder, serves as the basis for setting the pressure of the adjustable pressure reducing valve.

[0005] The pipeline leakage test section also includes an input stop valve connected to the compressed air flow inlet; the input stop valve is connected in series with a total inlet metal tube float flowmeter and a total inlet pressure gauge; The compressed air inlet is connected to the input main pipe and the output main pipe through the input stop valve, the total inlet metal tube float flowmeter and the total inlet pressure gauge; the pipeline to be tested is connected in parallel between the input main pipe and the output main pipe; Each pipeline to be tested has a first stop valve and a second stop valve at both ends; Taking the first stop valve as a reference, the distances between the pipelines at the opening positions of the respective leakage holes and the corresponding first stop valve are different; The output main pipe is connected to the gas-using equipment of the external compressed gas discharge section through a total output metal tube float flowmeter, a total output pressure gauge and an output stop valve connected in series.

[0006] A detection module is installed on the pipeline at the opening position of the leakage hole and the pipeline with the opening diameter of the leakage hole; The detection module includes an acoustic emission sensor installed at both ends of the pipeline with the opening position of the leakage hole and / or the pipeline with the opening diameter of the leakage hole, and the acoustic emission sensor collects elastic wave signals generated by the compressed gas passing through the pipeline on the pipe wall; The output end of the acoustic emission sensor is connected to a signal amplifier for signal preprocessing; the output end of the signal amplifier is connected to an acoustic detection transmitter, the acoustic detection transmitter is matched with an acoustic detection receiver, the acoustic detection receiver is connected to a processor, the processor analyzes the signal feature quantity and makes a pipeline leakage judgment.

[0007] A pipeline test assembly for a compressed gas-based vehicle, namely, a compressed gas pipeline detection demonstration test bench for an underwater navigation vehicle, includes a pipeline leakage test section for performing a wall damage and leakage detection on a pipeline to be detected used by the underwater navigation vehicle; pressure gauges and flow meters are provided at both ends of the pipeline to be detected; The pipeline leakage test section is provided with a testing device for testing the pipeline to be tested and / or a pipe-raising and lowering device for raising and lowering the tested pipeline.

[0008] As a further improvement of the above technical solution: The upper and lower pipe devices include indexing wheels which are coaxially arranged in pairs and have slots, and the indexing wheels are sequentially provided with a pipe loading station, a pipe feeding station, a lower rotation station and a pipe discharging station; Upper and lower tube guide arc plates are arranged below the indexing wheel; The pipeline to be tested falls from the pipe loading station located directly above the indexing wheel and both ends are clamped in the clamping slots of the indexing wheel; The tube feeding station is located on the horizontal side of the indexing wheel and is used to output the pipeline to be tested in the slot or put the pipeline to be tested after testing; The downward rotation station is located directly below the indexing wheel and on the upper and lower pipe guide arc plates; the indexing wheel drives the pipeline to be tested to slide or roll forward on the upper and lower pipe guide arc plates; The pipe discharging station is located on the other side of the indexing wheel, and is used to output the pipe to be inspected after inspection in the card slot of the lower rotating station.

[0009] The test device includes adjustable bases arranged in pairs to meet the different lengths of pipelines to be tested; A test support shaft seat is arranged on the adjustable base, and a test indexing wheel shaft is arranged on the test support shaft seat for horizontal rotation; The test indexing wheel shaft has an indexing wheel disc; A connection station is arranged on the horizontal side of the indexing wheel to receive the pipeline to be tested or to send out the tested pipeline to be tested; There is a clamping station just above the indexing wheel to install and fix the pipeline to be tested; A test station is provided on the other side of the indexing wheel to perform an inflation test on the pipeline to be tested; A disassembly station is provided directly below the dividing wheel to disassemble the pipeline to be tested from the dividing wheel; a test guide arc plate is provided directly below the disassembly station to carry the pipeline to be tested falling from the disassembly station, and the dividing wheel drives the pipeline to be tested to slide or roll on the test guide arc plate to the connection station.

[0010] The card slot of the indexing wheel of the test device has a bite bell mouth to allow the pipeline to be tested to enter and exit; At the clamping station, a clamping lifting rack is vertically arranged, which is located at the output side of the bite bell mouth; a swing gear shaft is rotated at the output side of the bite bell mouth, and the clamping lifting rack is meshed with the swing gear shaft; a one-way ratchet is also arranged on the swing gear shaft, which is located at the other end face of the indexing wheel, and a limited elastic pawl is arranged on one side of the one-way ratchet to mesh with the indexing wheel in one direction; a pawl opening lever arm is arranged on the limited elastic pawl; The root of a swing arm is arranged on the swing gear shaft, a swing pressing seat is installed at the lower end of the middle part of the swing arm, and an arc-shaped pressing opening is arranged at the lower end of the swing pressing seat; the long arc side and the short arc side of the seat are respectively arranged on both sides of the arc-shaped pressing opening, so as to facilitate riding on the pipeline to be tested, and a guiding inclined surface is arranged on the cantilever end of the swing arm; a spring-driven pressing elastic inclined wedge is arranged on the side where the bite bell mouth enters, and an inclined wedge opening lever perpendicular to the indexing wheel is arranged on the pressing elastic inclined wedge, and a clamping swing arm is arranged on one side of the inclined wedge opening lever to move the inclined wedge opening lever; The loading and unloading lifting rack is preliminarily lowered to the output side of the bite bell mouth; the bite bell mouth carries the pipeline to be tested to the loading and unloading station, and the swing gear shaft is meshed with the loading and unloading lifting rack; the loading and unloading lifting rack rises and drives the swing gear shaft to swing, so that the arc-shaped pressing port of the swinging pressing seat is located on the pipeline to be tested; the loading and unloading swinging arm moves the inclined wedge to open the lever, so that the downward pressing elastic inclined wedge is retracted, and the cantilever end of the swinging rotating arm passes; the loading and unloading swinging arm leaves, and the inclined wedge opening lever is reset under the action of the spring, and the downward pressing elastic inclined wedge is pressed down on the cantilever end of the swinging rotating arm to fix it; At the test station, the first connecting pipe and the second connecting pipe are respectively provided on both sides of the bite bell mouth; the first connecting pipe and the second connecting pipe are respectively clamped by a manipulator for approaching the seal or moving away from the replacement of the port of the pipeline to be tested; the connecting end faces of the first connecting pipe and the second connecting pipe are provided with a pipeline positioning cone sleeve, which is inserted into the port of the pipeline to be tested to realize installation positioning guidance; At the disassembly station, there are disassembly of the first opening rotating arm and disassembly of the second opening rotating arm; The first opening rotating arm is disassembled to correspond to the ratchet opening lever arm, and the second opening rotating arm is disassembled to correspond to the wedge opening lever; When the engaging bell mouth carries the pipeline to be tested to the disassembly station, the first opening rotating arm is disassembled to move the ratchet to open the lever arm, so that the limiting elastic ratchet overcomes the spring force and separates from the one-way ratchet. At the same time, the second opening rotating arm is disassembled to move the inclined wedge to open the lever, so that the downward pressing elastic inclined wedge is retracted and separated from the cantilever end of the swing rotating arm; under the action of its own weight, the clamping swing lever swings downward, so that the arc-shaped pressing port of the swinging downward pressing seat is separated from the pipeline to be tested; the pipeline to be tested falls onto the test guide arc plate; driven by the engaging bell mouth, the pipeline to be tested slides or rolls forward to the connection station.

[0011] A pipeline testing process for a compressed gas-based aircraft, using a pipeline testing assembly for a compressed gas-based aircraft; it includes the following method; First, the air compressor is used to compress air into the required compressed gas and store it in the gas cylinder; then, the gas cylinder can store compressed gas and the switch is controlled by the stop valve. After the pressure is adjusted by the pressure regulating valve, it is transported to the experimental section through the pipeline; secondly, the flow meter measures and displays the intake flow rate of the air reaching the experimental section through the pipeline during the working process, and the pressure gauge measures and displays the initial intake pressure of the air reaching the experimental section through the pipeline during the working process; thirdly, the gas supply switch of each segment pipeline is controlled by the detachable stop valve at the beginning of each segment. The middle of the experimental pipeline is an ordinary intact pipeline to simulate the pipeline without leakage. The upper part of the pipeline simulates the leakage of pipelines with different opening positions, and the lower part of the pipeline simulates the leakage of pipelines with different opening diameters. Next, the gas-using equipment is used to simulate the supply of marine compressed gas to users to detect the impact on leakage. The gas-using equipment is closed to simulate the slight leakage of compressed gas in the pressurized state of the pipeline. The signal generated by the compressed gas passing through the pipeline is sent to the acoustic emission sensor and the power amplifier for signal pre-processing before being sent to the acoustic emission processor. The acoustic emission processor analyzes the signal characteristics and makes a judgment on pipeline leakage.

[0012] A pipeline test process for a compressed gas-based vehicle, namely, a compressed gas pipeline detection demonstration test method for an underwater navigation vehicle, is provided by using a pipeline test assembly for a compressed gas-based vehicle, which includes the following methods: Step 1: Put the tube onto the test device through the upper and lower tube device; Step 2, completing the test through the test device; Step 3: The testing device sends the pipeline to be tested back to the upper and lower pipe devices; In step 1, with the help of the indexing wheel rotating, first, the pipeline to be tested falls from the pipe loading station located directly above the indexing wheel and both ends are clamped in the clamping slot of the indexing wheel; then, at the pipe feeding station, the pipeline to be tested in the clamping slot is fed into the connecting station of the test device; In step 2, with the help of the indexing wheel rotation, first, the position of the adjustable base is adjusted according to the pipeline to be inspected; then, the pipeline to be inspected is received at the connection station; Secondly, the loading and unloading rack is pre-dropped to the output side of the bite bell mouth, the bite bell mouth carries the pipeline to be tested to the loading and unloading station, and the swing gear shaft is meshed with the loading and unloading rack; the loading and unloading rack rises and drives the swing gear shaft to swing, so that the arc-shaped pressure port of the swinging pressing seat is located on the pipeline to be tested; the loading and unloading swing arm moves the inclined wedge to open the lever, so that the downward-pressing elastic inclined wedge is retracted, and the cantilever end of the swing arm passes; the loading and unloading swing arm leaves, and the inclined wedge opening lever is reset under the action of the spring, and the downward-pressing elastic inclined wedge is pressed down on the cantilever end of the swing arm to fix it; the loading and unloading station installs and fixes the pipeline to be tested, Thirdly, at the test station, the first connecting pipe and the second connecting pipe are respectively clamped by the manipulator to be close to the seal or away from the replacement of the port of the pipeline to be tested, and the pipeline positioning cone sleeve is inserted into the port of the pipeline to be tested to realize the installation positioning guide; Afterwards, at the disassembly station, the first opening rotating arm and the second opening rotating arm are disassembled; when the bite bell mouth carries the pipeline to be tested to the disassembly station, the first opening rotating arm is disassembled to move the ratchet to open the lever arm, so that the limit elastic ratchet overcomes the spring force and separates from the one-way ratchet, and at the same time, the second opening rotating arm is disassembled to move the inclined wedge to open the lever, so that the downward pressing elastic inclined wedge is retracted and separated from the cantilever end of the swing rotating arm; under the action of its own weight, the clamping swing lever swings downward, so that the arc-shaped pressure port of the swinging downward pressing seat is separated from the pipeline to be tested; the pipeline to be tested falls onto the test guide arc plate; driven by the bite bell mouth, the pipeline to be tested slides or rolls forward to the connection station; Finally, the tested pipeline to be tested is sent out at the connection station; In step three, first, the pipeline to be tested after being tested at the connection station of the test device is fed into the pipe feeding station; then, at the lower rotation station, the dividing wheel drives the pipeline to be tested to slide or roll forward on the upper and lower pipe guide arc plates; secondly, the pipeline to be tested after being tested in the card slot of the lower rotation station is output at the pipe output station.

[0013] The present invention has reasonable design, low cost, strong and durable, safe and reliable, simple operation, time-saving and labor-saving, money-saving, compact structure and convenient use. The present invention comprehensively considers the main influencing factors of compressed gas pipeline wall damage and leakage, and can realize experimental simulation and detection of pipeline leakage caused by these factors. The acoustic emission detection device provided by the platform can be used for ship compressed gas leakage detection comparative analysis and teaching and scientific research, and other detection technologies can also be used to conduct experiments on the platform. The platform has low design cost, can be reused, and can also be used for pipeline replacement and customized processing according to special needs. It basically meets the experimental teaching and scientific research of ship compressed gas system pipeline leakage detection using acoustic emission technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the use structure of the present invention.

[0015] Figure 2 It is a structural schematic diagram of the present invention. Figure 3 It is a schematic diagram of the automatic pipe-loading structure of the present invention. Figure 4 It is a schematic diagram of the test component structure of the present invention. Figure 5 It is a schematic diagram of the local structure of the test component of the present invention. Among them: 1. Detection module; 2. Signal amplifier; 3. Acoustic emission sensor; 4. Acoustic detection transmitter; 5. Compressed air inlet; 6. Input stop valve; 7. Total inlet metal tube float flowmeter; 8. Total inlet pressure gauge; 9. Total output metal tube float flowmeter; 10. Total output pressure gauge; 11. Gas-using equipment; 12. Output stop valve; 13. Input main pipe; 14. First stop valve; 15. Pipeline to be tested; 16. Second stop valve; 17. Output main pipe; 22. Verification pipeline; 26. Air; 27. Air compressor; 28. Gas cylinder; 29. ​​First safety valve; 30. Input pressure gauge; 31. Adjustable pressure reducing valve; 32. Pipeline for opening position of leakage hole; 33. Pipeline for opening diameter of leakage hole; 41. Upper and lower pipe devices; 42. Test device; 43. Indexing wheel; 44. Upper pipe station; 45. Feeding station; 46, downward rotation station; 47, pipe discharging station; 48, upper and lower pipe guide arc plates; 49, adjustable base; 50, test support shaft seat; 51, test indexing wheel shaft; 52, connection station; 53, clamping station; 54, test station; 55, disassembly station; 56, test guide arc plate; 57, bite bell mouth; 58, clamping lifting rack; 59, swing gear shaft; 60, swing arm; 61, swing down pressing seat; 62, long arc side of seat; 63, short arc side of seat; 64, press down elastic inclined wedge; 65, inclined wedge open lever; 66, clamping swing arm; 67, one-way ratchet; 68, limit elastic pawl; 69, pawl open lever; 70, first connecting pipe; 71, pipe positioning cone sleeve; 72, second connecting pipe; 73, disassemble the first open arm; 74, disassemble the second open arm. DETAILED DESCRIPTION like Figure 1-5 The pipeline test assembly of the compressed gas-based vehicle of this embodiment includes a compressed gas intake section, a pipeline leakage test section and a compressed gas discharge section connected in sequence; the compressed gas intake section compresses the air 26 into the compressed air required underwater for use in the pipeline leakage test section; a pressure gauge and a flow meter are arranged in the compressed gas intake section; the pipeline leakage test section performs pipeline leakage detection on the pipeline 15 to be detected used by the underwater navigation vehicle; pressure gauges and flow meters are arranged at both ends of the pipeline 15 to be detected; the compressed gas discharge section is connected to the output end of the pipeline leakage test section; in the pipeline leakage test section, the pipeline 15 to be detected includes a parallel calibration pipeline 22, a plurality of leakage hole opening position pipelines 32 and a plurality of leakage hole opening diameter pipelines 33; the calibration pipeline 22 is used to simulate the pipeline situation without leakage; the leakage hole opening position pipeline 32 is used to simulate the pipeline leakage situation at different opening positions; the leakage hole opening diameter pipeline 33 is used to simulate the pipeline leakage situation at different opening diameters.

[0016] Among them, the compressed gas intake section includes an air compressor 27, a gas cylinder 28, an input pressure gauge 30 and an adjustable pressure reducing valve 31 connected in sequence; the air compressor 27 stores the compressed gas after compression and conversion in the gas cylinder 28; the gas cylinder 28 stores the compressed gas and is controlled by the stop valve switch at its output port; the adjustable pressure reducing valve 31 adjusts the pressure of the compressed gas output by the gas cylinder 28 and inputs it into the compressed air inlet 5 of the pipeline leakage test section; the first safety valve 29 is connected to the gas cylinder 28 to control the safety pressure of the gas cylinder; the input pressure gauge 30 is used to monitor the output pressure of the gas cylinder 28 as a basis for adjusting the pressure of the adjustable pressure reducing valve 31.

[0017] The pipeline leakage test section also includes an input stop valve 6 connected to the compressed air flow inlet 5; the input stop valve 6 is connected in series with a total inlet metal tube float flowmeter 7 and a total inlet pressure gauge 8; the compressed air flow inlet 5 is connected to an input main pipe 13 and an output main pipe 17 through the input stop valve 6, the total inlet metal tube float flowmeter 7 and the total inlet pressure gauge 8; the pipeline 15 to be tested is connected in parallel between the input main pipe 13 and the output main pipe 17; a first stop valve 14 and a second stop valve 16 are respectively provided at both ends of each pipeline 15 to be tested; taking the first stop valve 14 as a reference, the distances of the pipelines 32 at the corresponding first stop valves 14 at the opening positions of the respective leakage holes are different; the output main pipe 17 is connected to the gas receiving equipment 11 of the external compressed gas discharge section through the total output metal tube float flowmeter 9, the total output pressure gauge 10 and the output stop valve 12 connected in series.

[0018] A detection module 1 is installed on the leakage hole opening position pipe 32 and the leakage hole opening diameter pipe 33; the detection module 1 includes acoustic emission sensors 3 installed at both ends of the leakage hole opening position pipe 32 and / or the leakage hole opening diameter pipe 33, and the acoustic emission sensor 3 collects the signal generated by the compressed gas passing through the pipeline on the pipe wall; the output end of the acoustic emission sensor 3 is connected to a signal amplifier 2 for signal preprocessing; the output end of the signal amplifier 2 is connected to an acoustic detection transmitter 4, the acoustic detection transmitter 4 is matched with an acoustic detection receiver, and the acoustic detection receiver is connected to a processor, and the processor analyzes the signal characteristic quantity to make a pipeline leakage judgment.

[0019] As a specific application embodiment, the air compressor is used to compress air into the required compressed gas and store it in a gas cylinder; the gas cylinder can store compressed gas and the switch is controlled by the stop valve. After the pressure is adjusted by the pressure regulating valve, it is transported to the experimental section through the pipeline; the flow meter is used to measure and display the intake flow rate through the pipeline to the experimental section during operation. The pipeline leakage test section consists of a front-end main stop valve, a pressure gauge, detachable stop valves at the beginning and end of the sections, a rear-end main stop valve, pipelines and accessories. The front-end main stop valve of the intake pipeline is used to control the main switch of the gas supply of all pipelines; the pressure gauge is used to measure and display the initial intake pressure of the gas through the pipeline to the experimental section during operation; the detachable stop valve at the beginning of each section is used to control the gas supply switch of the section pipeline; the middle of the experimental pipeline is an ordinary intact pipeline, which is used to simulate the pipeline condition without leakage; The upper part of the pipeline is used to simulate the leakage of pipelines at different opening positions. The opening diameters are all 0.001m, and from top to bottom, they are 0.9m, 0.7m, 0.3m, and 0.1m away from the stop valve of the segmented pipeline; The lower part of the pipeline is used to simulate the leakage of pipelines with different opening diameters. The opening position is 0.5m away from the first and last segmented pipeline stop valves. The opening diameters from top to bottom are 0.001m, 0.0015m, 0.002m, 0.0025m and 0.003m respectively. Among them, the opening diameter of 0.001m can also be used for experiments with different opening positions in the upper part.

[0020] In addition, the head and tail section stop valves are designed to be detachable, which is convenient for replacing and disassembling the pipeline in case of other leakage. The compressed gas discharge section consists of a flow meter, gas-using equipment, pipelines and accessories. Along the gas flow direction, the tail section flow meter is used to measure and display the gas flow used by the gas-using equipment in the pipeline during the working process; When the gas-using equipment is turned on, it simulates the impact of marine compressed gas supplying gas to users on leakage. When the gas-using equipment is turned off, it simulates the slight leakage of compressed gas in the pressurized state of the pipeline. The present invention can effectively simulate the leakage of marine compressed gas pipelines under laboratory conditions, and provide leakage detection simulation and demonstration. It can be reused, and all branch pipelines can be easily disassembled and assembled, which is convenient for setting other pipeline faults. Acoustic emission detection technology can be used to detect pipeline leakage and locate leakage points. In the figure, an acoustic emission sensor 3 is arranged on both sides of the leakage hole of the experimental pipeline. The signal generated by the compressed gas passing through the pipeline is sent to the acoustic emission processor after signal preprocessing by the power amplifier through the sensor. The pipeline leakage is judged by further analyzing the signal characteristic quantity. The experimental results can further verify the rationality and practicality of the experimental bench.

[0021] like Figure 1As shown, the pipeline test assembly of the compressed gas-based vehicle of this embodiment includes a pipeline leakage test section, which performs a pipe wall damage and leakage detection on the pipeline 15 to be tested used by the underwater navigation vehicle; pressure gauges and flow meters are provided at both ends of the pipeline 15 to be tested; The pipeline leakage test section is provided with a testing device 42 for testing the pipeline 15 to be tested and / or an upper and lower pipe device 41 for raising and lowering the test pipeline 15 .

[0022] The upper and lower pipe device 41 comprises a pair of coaxially arranged indexing wheels 43 having a slot, on which a pipe loading station 44, a pipe feeding station 45, a lowering station 46 and a pipe discharging station 47 are sequentially arranged; An upper and lower tube guide arc plate 48 is provided below the indexing wheel 43; The pipeline 15 to be tested falls from the pipe loading station 44 located directly above the indexing wheel 43 and its two ends are stuck in the slots of the indexing wheel 43; The tube feeding station 45 is located on the horizontal side of the indexing wheel 43 and is used to output the pipeline 15 to be tested in the slot or put the pipeline 15 to be tested after testing; The lower rotating station 46 is located directly below the indexing wheel 43 and on the upper and lower pipe guide arc plates 48; the indexing wheel 43 drives the pipeline 15 to be tested to slide or roll forward on the upper and lower pipe guide arc plates 48; The pipe discharging station 47 is located at the other side of the indexing wheel 43 and is used to output the pipeline 15 to be inspected after inspection in the slot of the downward transfer station 46 .

[0023] The testing device 42 includes adjustable bases 49 arranged in pairs to meet the different lengths of the pipelines 15 to be tested; A test support shaft seat 50 is arranged on the adjustable base 49, and a test indexing wheel shaft 51 is arranged on the test support shaft seat 50 for horizontal rotation; The test indexing wheel shaft 51 has an indexing wheel disc 43; A connection station 52 is provided on the horizontal side of the indexing wheel 43 to receive the pipeline 15 to be inspected or to send out the inspected pipeline 15 to be inspected; There is a clamping station 53 directly above the indexing wheel 43 to install and fix the pipeline 15 to be tested; A testing station 54 is provided on the other side of the indexing wheel 43 to perform an inflation test on the pipeline 15 to be tested; A disassembly station 55 is provided directly below the indexing wheel 43 to disassemble the pipeline 15 to be tested from the indexing wheel 43; a test guide arc plate 56 is provided directly below the disassembly station 55 to carry the pipeline 15 to be tested falling from the disassembly station 55, and the indexing wheel 43 drives the pipeline 15 to be tested to slide or roll on the test guide arc plate 56 to the connection station 52; The card slot of the indexing wheel 43 of the testing device 42 has a bite bell mouth 57 to allow the pipeline 15 to be tested to enter and exit; At the clamping station 53, a clamping lifting rack 58 is vertically arranged, which is located at the output side of the bite bell mouth 57; a swing gear shaft 59 is rotated at the output side of the bite bell mouth 57, and the clamping lifting rack 58 is meshed with the swing gear shaft 59; a one-way ratchet 67 is also arranged on the swing gear shaft 59, which is located at the other end surface of the indexing wheel 43, and a limited elastic pawl 68 is arranged on one side of the one-way ratchet 67 to unidirectionally mesh with the indexing wheel 43; a pawl opening lever arm 69 is arranged on the limited elastic pawl 68; The root of a swing arm 60 is arranged on the swing gear shaft 59, and a swing pressing seat 61 is installed at the lower end of the middle part of the swing arm 60, and an arc-shaped pressing opening is arranged at the lower end of the swing pressing seat 61; the long arc side 62 and the short arc side 63 of the seat are respectively arranged on both sides of the arc-shaped pressing opening, so as to facilitate riding on the pipeline 15 to be tested, and a guiding inclined surface is arranged at the cantilever end of the swing arm 60; a spring-driven pressing elastic inclined wedge 64 is arranged at the entrance side of the bite bell mouth 57, and an inclined wedge opening lever 65 is arranged on the pressing elastic inclined wedge 64 perpendicular to the indexing wheel 43, and a clamping swing arm 66 is arranged on one side of the inclined wedge opening lever 65 to move the inclined wedge opening lever 65; The loading and unloading rack 58 is lowered to the output side of the bite bell mouth 57 in advance; the bite bell mouth 57 carries the pipeline 15 to be tested to the loading and unloading station 53, and the swing gear shaft 59 is meshed with the loading and unloading rack 58; the loading and unloading rack 58 rises and drives the swing gear shaft 59 to swing, so that the arc-shaped pressure opening of the swing-down pressing seat 61 is located on the pipeline 15 to be tested; the loading and unloading swinging arm 66 moves the wedge-opening lever 65, so that the downward-pressing elastic wedge 64 is retracted, and the cantilever end of the swinging rotating arm 60 passes; the loading and unloading swinging arm 66 leaves, and the wedge-opening lever 65 is reset under the action of the spring, and the downward-pressing elastic wedge 64 is pressed down on the cantilever end of the swinging rotating arm 60 to fix it; At the test station 54, the first connecting pipe 70 and the second connecting pipe 72 are respectively provided on both sides of the bite bell mouth 57; the first connecting pipe 70 and the second connecting pipe 72 are respectively clamped by a manipulator for approaching the sealing or moving away from the port of the pipeline 15 to be tested; the connecting end surfaces of the first connecting pipe 70 and the second connecting pipe 72 are provided with a pipeline positioning cone sleeve 71, which is inserted into the port of the pipeline 15 to be tested to realize installation positioning guidance; At the disassembly station 55, there are disassembly of the first opening rotating arm 73 and disassembly of the second opening rotating arm 74; The first opening rotating arm 73 is disassembled to correspond to the ratchet opening lever arm 69, and the second opening rotating arm 74 is disassembled to correspond to the wedge opening lever 65; When the engaging bell mouth 57 carries the pipeline 15 to be tested to the disassembly station 55, the first opening rotating arm 73 is disassembled to move the ratchet opening arm 69, so that the limiting elastic ratchet 68 overcomes the spring force and separates from the one-way ratchet 67. At the same time, the second opening rotating arm 74 is disassembled to move the inclined wedge to open the lever 65, so that the downward pressing elastic inclined wedge 64 retracts and separates from the cantilever end of the swing rotating arm 60; under the action of its own weight, the clamping swing arm 66 swings downward, so that the arc-shaped pressure port of the swinging downward pressing seat 61 is separated from the pipeline 15 to be tested; the pipeline 15 to be tested falls onto the test guide arc plate 56; driven by the engaging bell mouth 57, the pipeline 15 to be tested slides or rolls forward to the connection station 52.

[0024] The pipeline test process of the aircraft based on compressed gas of this embodiment is based on the pipeline test assembly of the aircraft based on compressed gas; it includes the following method; Step 1: Put the tube on the testing device 42 through the tube-up and tube-down device 41; Step 2, completing the test through the testing device 42; Step 3: the testing device 42 sends the pipeline 15 to be tested back to the upper and lower pipe devices 41; In step 1, with the help of the rotation of the indexing wheel 43, first, the pipeline 15 to be tested falls from the pipe loading station 44 located directly above the indexing wheel 43 and both ends are stuck in the card slots of the indexing wheel 43; then, the pipe feeding station 45 feeds the pipeline 15 to be tested in the card slot into the connection station 52 of the test device 42; In step 2, by means of the rotation of the indexing wheel 43, first, the position of the adjustable base 49 is adjusted according to the pipeline 15 to be tested; then, the pipeline 15 to be tested is received at the connection station 52; Secondly, the loading and unloading rack 58 is preliminarily lowered to the output side of the engaging bell mouth 57, and the engaging bell mouth 57 carries the pipeline 15 to be tested to the loading and unloading station 53, and the swing gear shaft 59 is meshed with the loading and unloading rack 58; the loading and unloading rack 58 rises and drives the swing gear shaft 59 to swing, so that the arc-shaped pressure opening of the swinging pressing seat 61 is located on the pipeline 15 to be tested; the loading and unloading swinging arm 66 moves the inclined wedge to open the lever 65, so that the downward pressing elastic inclined wedge 64 is retracted, and the cantilever end of the swing rotating arm 60 passes; the loading and unloading swinging arm 66 leaves, and the inclined wedge to open the lever 65 is reset under the action of the spring, and the downward pressing elastic inclined wedge 64 is pressed down on the cantilever end of the swing rotating arm 60 to fix it; the loading and unloading station 53 installs and fixes the pipeline 15 to be tested, Again, at the test station 54, the first connecting pipe 70 and the second connecting pipe 72 are respectively clamped by the manipulator to be close to the seal or away from the port of the pipeline to be tested 15, and the pipeline positioning cone sleeve 71 is inserted into the port of the pipeline to be tested 15 to realize the installation positioning guide; Afterwards, at the disassembly station 55, the first opening rotating arm 73 and the second opening rotating arm 74 are disassembled; when the bite bell mouth 57 carries the pipeline 15 to be tested to the disassembly station 55, the first opening rotating arm 73 is disassembled to move the ratchet pawl to open the lever arm 69, so that the limit elastic ratchet 68 overcomes the spring force and separates from the one-way ratchet 67, and at the same time, the second opening rotating arm 74 is disassembled to move the inclined wedge to open the lever 65, so that the downward pressing elastic inclined wedge 64 is retracted and separated from the cantilever end of the swing rotating arm 60; under the action of its own weight, the clamping swing lever 66 swings downward, so that the arc-shaped pressure port of the swinging downward pressing seat 61 is separated from the pipeline 15 to be tested; the pipeline 15 to be tested falls onto the test guide arc plate 56; driven by the bite bell mouth 57, the pipeline 15 to be tested slides or rolls forward to the connection station 52; Finally, the tested pipeline 15 to be tested is sent out at the connection station 52; In step three, first, the pipeline 15 to be tested after being tested by the connection station 52 of the test device 42 is fed into the pipe feeding station 45; then, at the lower transfer station 46, the dividing wheel 43 drives the pipeline 15 to be tested to slide or roll forward on the upper and lower pipe guide arc plates 48; secondly, the pipeline 15 to be tested after being tested in the card slot of the lower transfer station 46 is output at the pipe outlet station 47.

[0025] As an improvement of Example 1, Example 2 realizes the automation of upper and lower tubes, installation, fixing, testing and output. The upper and lower tube devices 41 and the testing device 42 can be used in combination, preferably, and the matching test components of Example 1 are installed thereon to complete the test. It cleverly uses its own weight to realize opening and closing and blanking, and uses the rack lifting to realize opening. The design is ingenious, and the lifting is realized by the arc plate. The guided installation is realized by the inclined wedge, and the quick installation and disassembly of the pipe material is facilitated by the long arc side 62 and the short arc side 63 of the card seat, and the swing opening is realized by the swing arm. The swinging down card seat 61 is swung to realize the downward positioning. The present invention is fully described for a clearer disclosure, and the prior art is not listed one by one.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some of the technical features therein with equivalents; it is obvious for those skilled in the art to combine multiple technical solutions of the present invention. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pipeline test assembly for an aircraft based on compressed gas, characterized in that: It includes a pipeline leakage test section, which performs a pipe wall damage and leakage test on a pipeline to be tested (15) used by an underwater navigation vehicle; pressure gauges and flow meters are provided at both ends of the pipeline to be tested (15); The pipeline leakage test section is provided with a testing device (42) for testing the pipeline (15) to be tested and / or an upper and lower pipe device (41) for placing the test pipeline (15) up and down.

2. The pipeline test assembly for a compressed gas-based aircraft according to claim 1, characterized in that: The upper and lower pipe devices (41) include indexing wheels (43) which are coaxially arranged in pairs and have slots, and the indexing wheels (43) are sequentially provided with a pipe loading station (44), a pipe feeding station (45), a lowering station (46) and a pipe discharging station (47); Upper and lower tube guide arc plates (48) are provided below the indexing wheel (43); The pipeline (15) to be tested falls from the pipe loading station (44) located directly above the indexing wheel (43) and its two ends are clamped in the clamping grooves of the indexing wheel (43); The tube feeding station (45) is located on a horizontal side of the indexing wheel (43) and is used to output the pipeline to be tested (15) in the slot or to put the pipeline to be tested (15) after testing; The lower rotation station (46) is located directly below the indexing wheel (43) and on the upper and lower tube guide arc plates (48); the indexing wheel (43) drives the pipeline to be tested (15) to slide or roll forward on the upper and lower tube guide arc plates (48); The pipe discharging station (47) is located on the other side of the indexing wheel (43) and is used to discharge the pipe (15) to be inspected after being inspected in the slot of the downward transfer station (46).

3. The compressed gas based aircraft piping test assembly according to claim 1, characterized in that: The testing device (42) includes adjustable bases (49) arranged in pairs to meet the requirements of different lengths of pipelines (15) to be tested; A test support shaft seat (50) is arranged on the adjustable base (49), and a test indexing wheel shaft (51) is arranged on the test support shaft seat (50) for horizontal rotation; The test indexing wheel shaft (51) has an indexing wheel disc (43); A connection station (52) is provided on a horizontal side of the indexing wheel (43) to receive the pipeline to be inspected (15) or to send out the inspected pipeline to be inspected (15); A clamping station (53) is provided directly above the indexing wheel (43) for mounting and fixing the pipeline (15) to be tested; A testing station (54) is provided on the other horizontal side of the indexing wheel (43) to perform an inflation test on the pipeline (15) to be tested; A disassembly station (55) is provided directly below the indexing wheel (43) to disassemble the pipeline to be tested (15) from the indexing wheel (43); a test guide arc plate (56) is provided directly below the disassembly station (55) to carry the pipeline to be tested (15) dropped from the disassembly station (55); the indexing wheel (43) drives the pipeline to be tested (15) to slide or roll on the test guide arc plate (56) to move forward to the connection station (52).

4. The compressed gas based aircraft piping test assembly according to claim 1, characterized in that: The slot of the indexing wheel (43) of the testing device (42) has a snap-fit ​​bell mouth (57) to allow the pipeline (15) to be tested to enter and exit; A clamping lifting rack (58) is vertically arranged at the clamping station (53), and is located at the output side of the occlusal bell mouth (57); a swing gear shaft (59) is rotatably arranged at the output side of the occlusal bell mouth (57), and the clamping lifting rack (58) is meshed with the swing gear shaft (59); a one-way ratchet (67) is also arranged on the swing gear shaft (59), and is located at the other end surface of the indexing wheel (43); a limited elastic pawl (68) is arranged on one side of the one-way ratchet (67) to be unidirectionally meshed with the indexing wheel (43); a pawl opening lever arm (69) is arranged on the limited elastic pawl (68); The root of a swing arm (60) is arranged on the swing gear shaft (59), a swing pressing seat (61) is installed at the lower end of the middle part of the swing arm (60), and an arc-shaped pressing opening is arranged at the lower end of the swing pressing seat (61); the long arc side (62) and the short arc side (63) of the seat are respectively arranged on both sides of the arc-shaped pressing opening, so as to facilitate riding on the pipeline (15) to be tested, and a guiding inclined surface is arranged at the cantilever end of the swing arm (60); a spring-driven pressing elastic inclined wedge (64) is arranged at the entrance side of the bite bell mouth (57), an inclined wedge opening lever (65) perpendicular to the indexing wheel (43) is arranged on the pressing elastic inclined wedge (64), and a clamping swing arm (66) is arranged on one side of the inclined wedge opening lever (65) to move the inclined wedge opening lever (65); The loading and unloading rack (58) is lowered to the output side of the engaging bell mouth (57) in advance; the engaging bell mouth (57) carries the pipeline to be tested (15) to the loading and unloading station (53), and the swing gear shaft (59) is meshed with the loading and unloading rack (58); the loading and unloading rack (58) rises and drives the swing gear shaft (59) to swing, so that the arc-shaped pressing opening of the swinging pressing seat (61) is located on the pipeline to be tested (15); the loading and unloading swinging arm (66) moves the inclined wedge to open the lever (65), so that the downward pressing elastic inclined wedge (64) is retracted, and the cantilever end of the swinging rotating arm (60) passes; the loading and unloading swinging arm (66) leaves, and the inclined wedge to open the lever (65) is reset under the action of the spring, and the downward pressing elastic inclined wedge (64) is pressed down on the cantilever end of the swinging rotating arm (60) to fix it; At the test station (54), a first connecting pipe (70) and a second connecting pipe (72) are respectively provided on both sides of the bite bell mouth (57); the first connecting pipe (70) and the second connecting pipe (72) are respectively clamped by a robot for approaching the sealing or moving away from the port of the pipeline to be tested (15); and a pipeline positioning cone sleeve (71) is provided on the connecting end surfaces of the first connecting pipe (70) and the second connecting pipe (72) for inserting into the port of the pipeline to be tested (15) to realize installation positioning guidance; In the disassembly station (55), there is a disassembly of the first opening arm (73) and a disassembly of the second opening arm (74); The first opening rotating arm (73) is disassembled to correspond to the ratchet opening lever arm (69), and the second opening rotating arm (74) is disassembled to correspond to the wedge opening lever (65); When the occlusal bell mouth (57) carries the pipeline to be tested (15) to the disassembly station (55), the first opening rotating arm (73) is disassembled to move the ratchet pawl to open the lever arm (69), so that the limit elastic ratchet pawl (68) overcomes the spring force and separates from the one-way ratchet (67). At the same time, the second opening rotating arm (74) is disassembled to move the inclined wedge to open the lever (65), so that the downward pressing elastic inclined wedge (64) is retracted and separated from the cantilever end of the swing rotating arm (60); under the action of its own weight, the clamping swing lever (66) swings downward, so that the arc-shaped pressure port of the swinging downward pressing clamping seat (61) is separated from the pipeline to be tested (15); The pipeline to be tested (15) falls onto the test guide arc plate (56); driven by the engaging bell mouth (57), the pipeline to be tested (15) slides or rolls forward to the connection station (52).

5. A pipeline test process for an aircraft based on compressed gas, characterized in that By means of a compressed gas based aircraft line test assembly, The following methods are included: Step 1, placing the tube on the testing device (42) through the tube-up and tube-down device (41); Step 2, completing the test by using the test device (42); Step 3: The testing device (42) sends the pipeline to be tested (15) back to the upper and lower pipe devices (41); In step one, with the help of the rotation of the indexing wheel (43), first, the pipeline (15) to be tested falls from the pipe loading station (44) located directly above the indexing wheel (43) and is clamped at both ends in the clamping groove of the indexing wheel (43); then, the pipeline (15) to be tested in the clamping groove is fed into the connecting station (52) of the testing device (42) at the pipe feeding station (45); In step 2, by means of the rotation of the indexing wheel (43), first, the position of the adjustable base (49) is adjusted according to the pipeline (15) to be inspected; then, the pipeline (15) to be inspected is received at the connection station (52); Secondly, the loading and unloading rack (58) is preliminarily lowered to the output side of the engaging bell mouth (57), the engaging bell mouth (57) carries the pipeline to be tested (15) to the loading and unloading station (53), and the swing gear shaft (59) is meshed with the loading and unloading rack (58); the loading and unloading rack (58) rises and drives the swing gear shaft (59) to swing, so that the arc-shaped pressure opening of the swinging pressing seat (61) is located on the pipeline to be tested (15); the loading and unloading swinging arm (66) moves the inclined wedge to open the lever (65), so that the downward pressing elastic inclined wedge (64) is retracted, and the cantilever end of the swinging rotating arm (60) passes; the loading and unloading swinging arm (66) leaves, and the inclined wedge to open the lever (65) is reset under the action of the spring, and the downward pressing elastic inclined wedge (64) is pressed down on the cantilever end of the swinging rotating arm (60) to fix it; the loading and unloading station (53) installs and fixes the pipeline to be tested (15), Next, at the test station (54), the first connecting pipe (70) and the second connecting pipe (72) are respectively clamped by a manipulator to be close to the seal or away from the port of the pipeline to be tested (15), and the pipeline positioning cone sleeve (71) is inserted into the port of the pipeline to be tested (15) to achieve installation positioning guidance; Afterwards, at the disassembly station (55), the first opening rotating arm (73) and the second opening rotating arm (74) are disassembled; when the occlusal bell mouth (57) carries the pipeline to be tested (15) to the disassembly station (55), the first opening rotating arm (73) is disassembled to move the ratchet pawl to open the lever arm (69), so that the limit elastic ratchet pawl (68) overcomes the spring force and separates from the one-way ratchet (67); at the same time, the second opening rotating arm (74) is disassembled to move the inclined wedge to open the lever (65), so that the downward pressing elastic inclined wedge (64) retracts and separates from the cantilever end of the swing rotating arm (60); under the action of its own weight, the clamping swing lever (66) swings downward, so that the arc-shaped pressure port of the swinging downward pressing seat (61) is separated from the pipeline to be tested (15); The pipeline to be tested (15) falls onto the test guide arc plate (56); driven by the bite bell mouth (57), the pipeline to be tested (15) slides or rolls forward to the connection station (52); Finally, the inspected pipeline (15) to be inspected is sent out at the connection station (52); In step three, first, the pipeline (15) to be tested after being tested at the connection station (52) of the test device (42) is fed into the pipe feeding station (45); then, at the lower transfer station (46), the indexing wheel (43) drives the pipeline (15) to be tested to slide or roll forward on the upper and lower pipe guide arc plates (48); secondly, at the pipe outlet station (47), the pipeline (15) to be tested after being tested in the slot of the lower transfer station (46) is output.

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