A test device for detecting ignition sources of aircraft fuel pipelines

Abstract

The present invention relates to the technical field of ignition source detection, and discloses a test device for detecting the ignition source of an aircraft fuel pipeline, comprising a test mechanism, wherein the test mechanism comprises a test bench, and the test bench is provided with a substrate, and an epoxy resin plate is placed on the substrate; a posture positioning mechanism is arranged on the epoxy resin plate, and is used to position and install the fuel pipeline test piece, and an ignition source explosion test is performed on the fuel pipeline test piece by changing the installation posture of the fuel pipeline test piece. The present invention positions and installs the fuel pipeline test piece through the posture positioning mechanism, and changes the installation posture of the fuel pipeline test piece, and can obtain the ignition source explosion test conditions of the fuel pipeline test piece under various installation angles, so that the unreasonable overlap design of the fuel pipeline test piece itself can be changed according to the test data, thereby improving the flight safety of the aircraft.

Description

Technical Field

[0001] The invention relates to the technical field of ignition source detection, and more particularly to a test device for detecting an ignition source of an aircraft fuel pipeline. Background Art

[0002] When an aircraft is struck by lightning, due to the connectivity of the fuselage structure, after the lightning arc attaches to the aircraft, the lightning current will be conducted along the conductive path to various parts of the fuselage. Among them, the current conduction effect in the aircraft fuel line is particularly important, because the installation and laying of the aircraft fuel line in the fuel tank will directly contact the fuel vapor in the fuel tank, and the fuel line will be fixed and installed through flexible butt joints at the joints and corners. Therefore, the flexible butt joints of the fuel line are very likely to generate an ignition source when the lightning current is conducted to the flexible butt joints due to unreasonable overlap design, igniting the fuel vapor in contact with the flexible joints, thereby triggering combustion and explosion, endangering the flight safety of the aircraft. Summary of the invention

[0003] The present invention provides a test device for detecting the ignition source of an aircraft fuel pipeline, which solves the technical problem in the related art that the flexible butt joint of the fuel pipeline is very likely to generate an ignition source when the lightning current is transmitted to the flexible butt joint due to unreasonable overlap design, igniting the fuel vapor contacted by the flexible joint, thereby triggering combustion and explosion, endangering the flight safety of the aircraft.

[0004] The present invention provides a test device for detecting an ignition source of an aircraft fuel pipeline, comprising a test mechanism, wherein the test mechanism comprises a test bench, and the test bench is provided with a substrate, an acrylic square cabin is provided on the substrate, a mixed combustible gas intake pipeline is installed on the acrylic square cabin, gas explosion relief ports and a square cabin exhaust port are provided on both sides of the acrylic square cabin, a lightning current input end cable and a lightning current outflow end cable are respectively provided on both sides of the acrylic square cabin, an epoxy resin flat plate is placed on the substrate, a fuel pipeline test piece is provided on the epoxy resin flat plate, and an ignition electrode is also placed on the substrate; a posture positioning mechanism is arranged on the epoxy resin flat plate, and is used for positioning and installing the fuel pipeline test piece, and an ignition source explosion test is performed on the fuel pipeline test piece by changing the installation posture of the fuel pipeline test piece.

[0005] As a further optimization scheme of the present invention, the posture positioning mechanism includes a first fuel pipe clamping mechanism, which includes a first clamping assembly arranged at the front end of the fuel pipe test piece, and a second clamping assembly arranged at the middle and rear ends of the fuel pipe test piece; the first clamping assembly includes a first lower clamp placed on the epoxy resin flat plate, and a first upper clamp is provided on the first lower clamp, first screw holes are opened on both sides of the interior of the first lower clamp, first through grooves are opened on both sides of the interior of the first upper clamp, and a first fastening bolt is provided in the first through groove, and the first fastening bolt passes through the first through groove and is threadedly connected to the first screw hole; the second clamping assembly includes a second lower clamp placed on the epoxy resin flat plate, and a second upper clamp is provided on the second lower clamp, third screw holes are opened on both sides of the interior of the second lower clamp, second through grooves are opened on both sides of the interior of the second upper clamp, and a second fastening bolt is provided in the second through groove, and the second fastening bolt passes through the second through groove and is threadedly connected to the third screw hole.

[0006] As a further optimization scheme of the present invention, when the first through groove is used as the first mounting hole and the second through groove is used as the second mounting hole, the corresponding first mounting hole and the second mounting hole are connected to the connecting terminal, the lightning current entry end cable is connected to the first mounting hole through the connecting terminal, and the lightning current outflow end cable is connected to the second mounting hole through the connecting terminal; the lightning current is conducted from the generator to the lightning current entry end cable, and is conducted to the lightning current outflow end cable through the connecting terminal and the fuel pipeline test piece.

[0007] As a further optimization scheme of the present invention, first adjustment grooves are further provided on both sides inside the first lower clamp, and first adjustment bolts are provided inside the first adjustment grooves, and second screw holes compatible with the first adjustment bolts are provided on the epoxy resin flat plate, and the second screw holes are threadedly connected to the first adjustment bolts; the centers of the two groups of the first adjustment grooves are located on the same central axis, so that the first adjustment grooves can be rotated outside the first adjustment bolts to adjust the placement angle of the first clamping assembly on the epoxy resin flat plate.

[0008] As a further optimization scheme of the present invention, second adjustment grooves are provided on both sides of the second lower clamp, and second adjustment bolts are provided inside the second adjustment grooves. A fourth screw hole matching the second adjustment bolt is provided on the epoxy resin flat plate, and the fourth screw hole is threadedly connected to the second adjustment bolt.

[0009] As a further optimization scheme of the present invention, the posture positioning mechanism includes a second fuel pipe clamping mechanism, which includes a rotating disk connected to the inside of the epoxy resin flat plate by a bearing, and connecting plates are installed on both sides of the rotating disk, and second sliding rods are installed on the connecting plates, and sliding grooves are also opened on both sides of the epoxy resin flat plate, and the sliding grooves and the second sliding rods are slidably connected.

[0010] As a further optimization scheme of the present invention, the internal bearing of the epoxy resin flat plate is connected to a bidirectional threaded rod, and both sides of the outside of the bidirectional threaded rod are threadedly connected to screw sleeves, the other two sides of the rotating disk are rotatably connected to connecting rods via a rotating shaft, and the end of the connecting rod away from the rotating disk is rotatably connected to the screw sleeve via a rotating shaft.

[0011] As a further optimization scheme of the present invention, a collar is installed in the rotating disk, and a connecting column is provided in the collar, guide grooves are opened on both sides of the collar, and a guide block is slidably connected in the guide groove, and the guide block is fixedly connected to the connecting column.

[0012] As a further optimization scheme of the present invention, a base plate is installed on the second sliding rod and the connecting column, and a third lower clamp is installed on the base plate, a third upper clamp is provided on the third lower clamp, fifth screw holes are opened on both sides of the third lower clamp, third through grooves are opened on both sides of the third upper clamp, and a third fastening bolt is provided in the third through groove, and the third fastening bolt passes through the third through groove and is threadedly connected to the fifth screw hole.

[0013] As a further optimization scheme of the present invention, when the third through groove is used as the first mounting hole and the second mounting hole, the corresponding first mounting hole and the second mounting hole are connected to the connecting terminal, the lightning current entrance end cable is connected to the first mounting hole through the connecting terminal, and the lightning current outflow end cable is connected to the second mounting hole through the connecting terminal; the lightning current is conducted from the generator to the lightning current entrance end cable, and is conducted to the lightning current outflow end cable through the connecting terminal and the fuel pipeline test piece.

[0014] The beneficial effects of the present invention are as follows: the present invention positions and installs the fuel pipeline test piece through the attitude positioning mechanism, and changes the installation attitude of the fuel pipeline test piece, so as to obtain the ignition source combustion and explosion test conditions of the fuel pipeline test piece under the installation conditions at various angles, thereby being able to change the unreasonable overlap design of the fuel pipeline test piece itself according to the test data, effectively solving the problem that the ignition source is generated when the lightning current is transmitted to the flexible butt joint, igniting the fuel vapor in contact with the flexible joint, thereby triggering the combustion and explosion, thereby improving the flight safety of the aircraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a schematic diagram of the three-dimensional structure of the first embodiment of the present invention;

[0016] Figure 2 It is a cross-sectional structural schematic diagram of the first embodiment of the present invention;

[0017] Figure 3 The first embodiment of the present invention Figure 2 A magnified view of the structure at center;

[0018] Figure 4 It is a partial structural schematic diagram of the testing mechanism and the first fuel pipe clamping mechanism of the first embodiment of the present invention;

[0019] Figure 5 It is a schematic diagram of an exploded three-dimensional structure of a first fuel pipe clamping mechanism in Embodiment 1 of the present invention;

[0020] Figure 6 is a schematic diagram of the structure of the first lower clamp in the first embodiment of the present invention;

[0021] Figure 7 is a schematic diagram of the structure of the second lower clamp in the first embodiment of the present invention;

[0022] Figure 8 This is a schematic diagram of lightning current conduction and wiring in Embodiment 1 of the present invention;

[0023] Fig. 9 It is a schematic diagram of the three-dimensional structure of the second embodiment of the present invention;

[0024] Fig.10 It is a partial structural schematic diagram of the second fuel pipe clamping mechanism of the second embodiment of the present invention;

[0025] Fig.11 is a schematic diagram of the three-dimensional structure of the second fuel pipe clamping mechanism of the second embodiment of the present invention from another viewing angle;

[0026] Fig.12 It is a partial three-dimensional cross-sectional structural schematic diagram of the second fuel pipe clamping mechanism in the second embodiment of the present invention;

[0027] Fig.13 It is a schematic diagram of the exploded three-dimensional structure of the collar and the connecting column of the second embodiment of the present invention;

[0028] Fig.14 This is a working state diagram of the second fuel pipe clamping mechanism in the second embodiment of the present invention.

[0029] In the figure: 100, test mechanism; 101, test bench; 102, substrate; 103, acrylic shelter; 104, mixed combustible gas inlet pipeline; 105, lightning current inlet cable; 106, lightning current outlet cable; 107, gas explosion release port; 108, shelter exhaust port; 109, epoxy resin plate; 110, ignition electrode; 111, fuel pipeline test piece; 200, shock absorbing mechanism; 201, rubber shock absorbing block; 202, first slide bar; 203, sliding sleeve; 204, first spring; 300, first fuel pipe clamping mechanism; 301, first clamping assembly; 3011, first lower clamp; 3012, first upper clamp; 3013, first fastening bolt; 3014, first adjustment slot; 3015 , first adjusting bolt; 302, second clamping assembly; 3021, second lower clamp; 3022, second upper clamp; 3023, second fastening bolt; 3024, second adjusting groove; 3025, second adjusting bolt; 400, second fuel pipe clamping mechanism; 401, rotating disk; 402, connecting plate; 403, second slide bar; 404, slide groove; 405, two-way threaded rod; 406, screw sleeve; 407, connecting rod; 408, spline groove; 409, spline shaft; 410, second spring; 411, external drive rod; 412, collar; 413, connecting column; 414, guide groove; 415, guide block; 416, bottom plate; 417, third lower clamp; 418, third upper clamp; 419, third fastening bolt. DETAILED DESCRIPTION

[0030] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0031] Embodiment 1: According to the attached Figure 1 As shown, a test device for detecting an ignition source of an aircraft fuel pipeline includes a test mechanism 100, wherein the test mechanism 100 includes a test bench 101, and a base plate 102 is disposed on the test bench 101. A shock absorbing mechanism 200 is disposed between the test bench 101 and the base plate 102.

[0032] According to the attached Figure 2 and attached Figure 3As shown, the shock absorbing mechanism 200 is located at the front, middle and rear positions of the bottom of the substrate 102, so as to support the acrylic cabin 103 as a whole. The shock absorbing mechanism 200 includes a plurality of rubber shock absorbing blocks 201 installed at the bottom of the substrate 102, and a first sliding bar 202 is provided inside the rubber shock absorbing block 201, and the first sliding bar 202 is installed at the bottom of the substrate 102, and the outside of the first sliding bar 202 is slidably connected with a sliding sleeve 203, and the sliding sleeve 203 is installed on the test bench 101.

[0033] The first slide bar 202 is also provided with a first spring 204, and the first slide bar 202 and the slide sleeve 203 are slidably connected to provide auxiliary support for the base plate 102. At the same time, the sliding cooperation between the first slide bar 202 and the slide sleeve 203 also has a damping effect. The rubber damping block 201 and the first spring 204 cooperate to disperse the vibration force, so that the gas explosion in the acrylic cabin 103 can be buffered in the vertical direction.

[0034] According to the attached Figure 1 To Attachment Figure 4 As shown, an acrylic box 103 is provided on the base plate 102 , and a mixed combustible gas inlet pipeline 104 is installed on the acrylic box 103 .

[0035] Specifically, the mixed combustible gas inlet pipeline 104 enters the mixed combustible gas from the upper end surface of the acrylic cabin 103. The mixed combustible gas includes hydrogen, oxygen and argon. Preferably, the hydrogen is 5%, the oxygen is 12%, and the argon is 83%. In this embodiment, after the mixed combustible gas enters the acrylic cabin 103 through the gas delivery device, the air in the acrylic cabin 103 is replaced through the cabin exhaust port 108, and the gas in the acrylic cabin 103 is completely replaced with the mixed combustible gas through 5 times the volume of gas input.

[0036] Among them, gas explosion relief ports 107 and shelter exhaust ports 108 are provided on both sides of the acrylic shelter 103, so as to provide a gas explosion relief channel at the moment of gas explosion.

[0037] Specifically, an epoxy resin plate 109 is placed on the substrate 102. The epoxy resin plate 109 plays the role of electrical insulation support to ensure that the conduction path of the current does not pass through the bottom surface structure.

[0038] Furthermore, the epoxy resin plate 109 is connected with a fuel line test piece 111 through a posture positioning mechanism. When in use, the fuel line test piece 111 is positioned and installed through the posture positioning mechanism, and then the epoxy resin plate 109 is placed on the substrate 102, and then the acrylic cabin 103 is installed on the substrate 102, and the joint between the acrylic cabin 103 and the substrate 102 is airtightly sealed by applying sealant.

[0039] According to the attached Figure 4 To Attachment Figure 5 As shown, the posture positioning mechanism includes a first fuel pipe clamping mechanism 300, and the first fuel pipe clamping mechanism 300 includes a first clamping assembly 301 arranged at the front end of the fuel pipe test piece 111, and a second clamping assembly 302 arranged at the middle and rear end of the fuel pipe test piece 111. In other words, the first clamping assembly 301 and the second clamping assembly 302 are placed in parallel on the epoxy resin flat plate 109, and the first clamping assembly 301 can achieve different installation angle requirements of the fuel pipe test piece 111 through the installation positions of different fixed angles. In addition, the fuel pipe test piece 111 can be fixed on the epoxy resin flat plate 109 through the first clamping assembly 301 and the second clamping assembly 302.

[0040] Among them, according to the attached Figure 5 and attached Figure 6 As shown, the first clamping assembly 301 includes a first lower clamp 3011 placed on the epoxy resin flat plate 109, and a first upper clamp 3012 is provided on the first lower clamp 3011, and the first lower clamp 3011 and the first upper clamp 3012 are provided with a first clamping groove for the fuel pipeline test piece 111 to pass through, first screw holes are provided on both sides of the first lower clamp 3011, and first through grooves are provided on both sides of the first upper clamp 3012, and a first fastening bolt 3013 is provided in the first through groove, and the first fastening bolt 3013 passes through the first through groove and is threadedly connected to the first screw hole.

[0041] Furthermore, first adjustment grooves 3014 are provided on both sides of the first lower clamp 3011, and first adjustment bolts 3015 are provided inside the first adjustment grooves 3014. Second screw holes matching the first adjustment bolts 3015 are provided on the epoxy resin plate 109, and the second screw holes are threadedly connected to the first adjustment bolts 3015.

[0042] It should be noted that when the angles of the first lower clamp 3011 and the first upper clamp 3012 are adjusted, the first adjustment slot 3014 is rotated outside the first adjustment bolt 3015 to adjust the placement angle of the first clamping assembly 301 on the epoxy resin plate 109, thereby adjusting the fixed angle of the fuel pipeline test piece 111 to meet the requirements of different installation angles of the fuel pipeline test piece 111.

[0043] In addition, according to the attached Figure 5 and attached Figure 7As shown, the second clamping assembly 302 includes a second lower clamp 3021 placed on the epoxy resin flat plate 109, and a second upper clamp 3022 is provided on the second lower clamp 3021, and the second lower clamp 3021 and the second upper clamp 3022 are provided with second clamping grooves for the fuel pipeline test piece 111 to pass through, and third screw holes are provided on both sides of the second lower clamp 3021, and second through grooves are provided on both sides of the second upper clamp 3022, and a second fastening bolt 3023 is provided in the second through groove, and the second fastening bolt 3023 passes through the second through groove and is threadedly connected to the third screw hole.

[0044] Furthermore, second adjustment grooves 3024 are provided on both sides inside the second lower clamp 3021, and second adjustment bolts 3025 are provided inside the second adjustment grooves 3024. A fourth screw hole matching the second adjustment bolt 3025 is provided on the epoxy resin plate 109, and the fourth screw hole is threadedly connected to the second adjustment bolt 3025.

[0045] It should be understood that when the angle of the fuel line test piece 111 is adjusted, the installation position of the second clamping assembly 302 on the epoxy resin plate 109 can be adjusted by setting the second adjustment groove 3024 and the second adjustment bolt 3025, so as to provide a clearance space when the angle of the fuel line test piece 111 is adjusted, thereby cooperating with the first clamping assembly 301 to adjust the installation angle of the fuel line test piece 111, so as to adapt to the requirements of different installation angles of the fuel line test piece 111.

[0046] According to the attached Figure 4 To Attachment Figure 8 As shown, it should be noted that the first through slot is used as the first mounting hole, and the second through slot is used as the second mounting hole.

[0047] When the first through slot and the second through slot are used as the first mounting hole and the second mounting hole, it is necessary to install the connecting terminal on the group of the first mounting hole and the second mounting hole to be used.

[0048] It should be noted that the first mounting hole is the mounting hole at the end where the lightning current enters the fuel pipe, the second mounting hole is the mounting hole at the end where the lightning current flows out of the fuel pipe, and the connecting end is the terminal that fixes the cable.

[0049] A lightning current input cable and a lightning current outflow cable 106 are respectively provided on both sides of the acrylic cabin 103 , and the lightning current input cable and the lightning current outflow cable 106 pass through the acrylic cabin 103 and extend to the interior of the acrylic cabin 103 .

[0050] In this embodiment, the lightning current inlet cable 105 is connected to the first mounting hole through a connecting terminal, and the lightning current outlet cable 106 is connected to the second mounting hole through a connecting terminal.

[0051] The lightning current is conducted from the generator to the lightning current entry cable 105, and is conducted to the lightning current exit cable 106 through the connection terminal and the fuel line test piece 111, and finally returns to the grounding terminal of the generator.

[0052] According to the attached Figure 8 As shown, an ignition electrode 110 is also placed on the substrate 102. The ignition electrode 110 is placed in the acrylic cabin 103, and its function is to conduct the fuel pipeline with lightning current, and to generate a 200μJ electric spark through an external power supply to verify whether the gas in the acrylic cabin 103 is flammable when no gas explosion occurs.

[0053] Embodiment 2: According to the attached Fig. 9 To Attachment Fig.12 As shown, the posture positioning mechanism includes a second fuel pipe clamping mechanism 400, and the second fuel pipe clamping mechanism 400 includes a rotating disk 401 connected to the inside of the epoxy resin flat plate 109 by a bearing, and connecting plates 402 are installed on both sides of the rotating disk 401, and second slide bars 403 are installed on the connecting plates 402. Slide grooves 404 are also opened on both sides of the inside of the epoxy resin flat plate 109, and the slide grooves 404 are slidably connected to the second slide bars 403. The slide grooves 404 are arranged in an arc structure, and the centers of the two slide grooves 404 and the center of the rotating disk 401 are located on the same central axis.

[0054] Specifically, the internal bearing of the epoxy resin plate 109 is connected to a bidirectional threaded rod 405, and both sides of the outside of the bidirectional threaded rod 405 are threadedly connected to screw sleeves 406, and the other two sides of the rotating disk 401 are rotatably connected to connecting rods 407 through a rotating shaft, and the end of the connecting rod 407 away from the rotating disk 401 is rotatably connected to the screw sleeves 406 through a rotating shaft.

[0055] It should be understood that when the bidirectional threaded rod 405 is rotated, the screw sleeve 406 moves closer to or away from each other outside the bidirectional threaded rod 405, thereby controlling the movement of the connecting rod 407. Under the action of the rotating shaft connection, the rotating disk 401 rotates to control the second sliding rod 403 to move in the sliding groove 404, thereby adjusting the position of the second sliding rod 403 in the sliding groove 404.

[0056] Furthermore, a spline groove 408 is provided at one end of the bidirectional threaded rod 405, and a spline shaft 409 is slidably connected in the spline groove 408, and a second spring 410 is installed between the spline shaft 409 and the spline groove 408. Among them, an external drive rod 411 is connected to the bearing on the acrylic cabin 103, and a slot matching the spline shaft 409 is provided in the external drive rod 411, and a notch matching the spline shaft 409 is provided inside the slot. When the spline shaft 409 is engaged with the slot, the bidirectional threaded rod 405 inside the acrylic cabin 103 can be driven to rotate synchronously by rotating the external drive rod 411.

[0057] Secondly, by setting the external driving rod 411, the fuel pipeline test piece 111 inside the acrylic cabin 103 can be adjusted by an external motor or by hand-cranking, so that when the angle of the fuel pipeline test piece 111 is changed for testing, there is no need to remove the acrylic cabin 103, thereby improving convenience.

[0058] According to the attached Fig.13 As shown, a collar 412 is installed in the rotating disk 401, and a connecting column 413 is arranged in the collar 412. Guide grooves 414 are provided on both sides of the collar 412, and guide blocks 415 are slidably connected in the guide grooves 414, and the guide blocks 415 are fixedly connected to the connecting column 413. When the collar 412 is driven to rotate, the guide grooves 414 in the collar 412 rotate synchronously, forcing the guide blocks 415 to slide in the guide grooves 414, so that the connecting column 413 can move upward, so as to facilitate the upward lifting of the fuel line test piece 111.

[0059] It should be noted that the guide groove 414 is arranged in an inclined shape. When the collar 412 drives the guide groove 414 to rotate synchronously, the guide block 415 moves along the inner wall of the guide groove 414, thereby lifting the connecting column 413 upward.

[0060] Among them, a base plate 416 is installed on the second sliding rod 403 and the connecting column 413, and a third lower clamp 417 is installed on the base plate 416, and a third upper clamp 418 is provided on the third lower clamp 417. The third clamp 417 and the third upper clamp 418 are provided with a third clamping groove for the fuel pipeline test piece 111 to pass through, and the third lower clamp 417 is provided with a fifth screw hole on both sides, and the third upper clamp 418 is provided with a third through groove on both sides, and a third fastening bolt 419 is provided in the third through groove, and the third fastening bolt 419 passes through the third through groove and is threadedly connected to the fifth screw hole.

[0061] It should be noted that according to the attached Fig.14As shown, when the bidirectional threaded rod 405 is rotated, the screw sleeve 406 moves closer to or away from each other outside the bidirectional threaded rod 405, thereby controlling the movement of the connecting rod 407. Under the action of the rotating shaft connection, the rotating disk 401 rotates to control the second sliding rod 403 to move in the sliding groove 404.

[0062] While the rotating disk 401 rotates, the ring 412 rotates synchronously. When the ring 412 drives the guide groove 414 to rotate synchronously, the guide block 415 moves along the inner wall of the guide groove 414. Under the fixed limiting action of the third lower clamp 417 and the third upper clamp 418 on the fuel pipeline test piece 111, the second sliding rods 403 on both sides drive the two ends of the fuel pipeline test piece 111 to rotate synchronously, so as to adjust the angles of the two ends of the fuel pipeline test piece 111.

[0063] Furthermore, by limiting the fuel line test piece 111, the connecting column 413 is also restricted in movement, so that the connecting column 413 can only move upward along the inner wall of the guide groove 414, thereby realizing three-dimensional adjustment of the detection angle of the fuel line test piece 111. When adjusting the angle of the fuel line test piece 111, it is not limited to the angle adjustment on the plane position, but can be adjusted up and down, as well as front and back directions, thereby improving the fit between the detection environment and the actual installation environment.

[0064] The same as in the first embodiment is that according to the attached Fig. 9 To Attachment Fig.14 As shown, the third through slot can also be used as the first mounting hole and the second mounting hole. When the third through slot is used as the first mounting hole and the second mounting hole, a connecting terminal needs to be installed on the first mounting hole and the second mounting hole in use, and the lightning current inlet cable 105 is connected to the first mounting hole through the connecting terminal, and the lightning current outlet cable 106 is connected to the second mounting hole through the connecting terminal; the lightning current is conducted from the generator to the lightning current inlet cable 105, and is conducted to the lightning current outlet cable 106 through the connecting terminal and the fuel line test piece 111.

[0065] An example of the present specific implementation mode is described above, but the present embodiment is not limited to the above-mentioned specific implementation mode, which is merely illustrative and not restrictive. A person skilled in the art may make many forms inspired by the present embodiment, all of which are protected by the present embodiment.

Claims

1. A test device for detecting ignition sources of aircraft fuel pipelines, characterized in that: include: A testing mechanism (100), the testing mechanism (100) comprising a testing bench (101), wherein the testing bench (101) is provided with a substrate (102), wherein an acrylic box cabin (103) is provided on the substrate (102), wherein a mixed combustible gas inlet pipeline (104) is installed on the acrylic box cabin (103), gas explosion relief ports (107) and box cabin exhaust ports (108) are provided on both sides of the acrylic box cabin (103), lightning current input end cables and lightning current outflow end cables (106) are provided on both sides of the acrylic box cabin (103), an epoxy resin plate (109) is placed on the substrate (102), and a fuel pipeline test piece (111) is provided on the epoxy resin plate (109), and an ignition electrode (110) is also placed on the substrate (102); A posture positioning mechanism is arranged on the epoxy resin flat plate (109) and is used to position and install the fuel pipeline test piece (111). By changing the installation posture of the fuel pipeline test piece (111), an ignition source explosion test is performed on the fuel pipeline test piece (111); The posture positioning mechanism comprises a second fuel pipe clamping mechanism (400), the second fuel pipe clamping mechanism (400) comprises a rotating disk (401) connected to the inside of the epoxy resin flat plate (109) by a bearing, and connecting plates (402) are installed on both sides of the rotating disk (401), and second sliding rods (403) are installed on the connecting plates (402), and sliding grooves (404) are also provided on both sides of the inside of the epoxy resin flat plate (109), and the sliding grooves (404) and the second sliding rods (403) are slidably connected; A collar (412) is installed in the rotating disk (401), and a connecting column (413) is provided in the collar (412). Guide grooves (414) are provided on both sides of the collar (412), and a guide block (415) is slidably connected in the guide groove (414), and the guide block (415) is fixedly connected to the connecting column (413); A base plate (416) is installed on both the second sliding rod (403) and the connecting column (413), and a third lower clamp (417) is installed on the base plate (416), and a third upper clamp (418) is provided on the third lower clamp (417), and fifth screw holes are provided on both sides of the third lower clamp (417), and third through grooves are provided on both sides of the third upper clamp (418), and a third fastening bolt (419) is provided in the third through groove, and the third fastening bolt (419) passes through the third through groove and is threadedly connected to the fifth screw hole.

2. A test device for detecting ignition sources of aircraft fuel pipelines according to claim 1, characterized in that: The epoxy resin plate (109) is internally bearing-connected with a bidirectional threaded rod (405), and both sides of the outside of the bidirectional threaded rod (405) are threadedly connected with threaded sleeves (406), and the other two sides of the rotating disk (401) are rotationally connected with connecting rods (407) via a rotating shaft, and one end of the connecting rod (407) away from the rotating disk (401) is rotationally connected to the threaded sleeve (406) via a rotating shaft.

3. A test device for detecting ignition sources of aircraft fuel pipelines according to claim 1, characterized in that: When the third through slot is used as the first mounting hole and the second mounting hole, the corresponding first mounting hole and the second mounting hole are connected to the connecting terminal, the lightning current inlet end cable (105) is connected to the first mounting hole through the connecting terminal, and the lightning current outlet end cable (106) is connected to the second mounting hole through the connecting terminal; The lightning current is conducted from the generator to the lightning current inlet cable (105), and is conducted to the lightning current outlet cable (106) through the connecting terminal and the fuel line test piece (111).

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