Experimental platform for igniting methane by shock waves

Abstract

The invention discloses an experimental platform for igniting methane by shock waves, and relates to the technical field of experimental platforms, the experimental platform comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a rack, the top end of the rack is fixedly connected with an experimental chamber, and square frames symmetrically penetrate through the outer side surface of the experimental chamber; an acrylic plate is fixedly connected to the inner wall of the square frame, the acrylic plate is made of organic glass with the thickness being 10 mm or above and is made of a transparent material with certain strength, an operator can conveniently observe the condition in the inner cavity of the experiment cavity, and a shock wave generating device is fixedly connected to the inner wall of the experiment cavity. The shock wave generating device comprises a first fixing ring, the first fixing ring is fixedly connected to the inner wall of the experiment chamber, a pressing ring is fixedly connected to the inner wall of the first fixing ring, and a shock wave device is arranged in an inner cavity of the pressing ring. And the effect of releasing the force generated by igniting the methane by the shock waves is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of experimental platforms, and particularly to an experimental platform for igniting methane by shock waves. Background Art

[0002] In fields such as coal mining, gas disasters have always been major safety hazards. Therefore, the experimental chamber in the experimental platform for igniting methane by shock waves is of great significance. This experimental chamber is specifically designed to simulate the complex environment of shock wave equipment in boreholes. Its internal structure is designed strictly according to the actual working conditions and has the ability to accurately simulate key parameters such as pressure, temperature, humidity, and gas concentration in the borehole. By precisely controlling these parameters, the real scenario in the borehole under extreme conditions can be highly restored. For example, in an environment with high gas outburst, the gas concentration can be accurately set to the dangerous threshold range, and at the same time, the propagation characteristics of shock waves in the narrow borehole space can be simulated, including the intensity attenuation, reflection, and superposition of shock waves. Furthermore, it can be examined whether the shock wave excitation will ignite or detonate the gas in such a harsh environment. The high-precision simulation ability of the experimental chamber provides a reliable experimental environment for in-depth study of the interaction mechanism between shock waves and gas, helps to develop more safe and effective gas prevention and control technologies and measures, thus ensuring the safe production of operations such as coal mining, reducing the risk of gas explosion accidents, and promoting the safe development of related industries.

[0003] In the experimental platform for igniting methane by shock waves, if the force generated by the explosion is not released, in terms of the equipment itself, the huge impact force that bursts out instantly will cause serious damage to the experimental chamber and various precision monitoring equipment inside. For example, sensors may be damaged by vibration, and data acquisition lines may be torn off, resulting in the loss of experimental data and the interruption of the experimental process, greatly increasing the equipment maintenance cost and the experimental time cost. From the perspective of the experimental environment, the strong impact force will cause the entire platform to vibrate violently, which may damage the stability and installation accuracy of the platform, affecting the accuracy and repeatability of subsequent experiments. Summary of the Invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: An experimental platform for igniting methane by shock waves includes a bottom plate. The upper surface of the bottom plate is fixedly connected with a frame. The top end of the frame is fixedly connected with an experimental chamber. The outer side surface of the experimental chamber is symmetrically penetrated by a square frame. The inner wall of the square frame is fixedly connected with an acrylic plate, which is organic glass with a thickness of more than ten millimeters, a material that is transparent and has a certain strength, and can facilitate operators to observe the situation inside the inner cavity of the experimental chamber. The inner wall of the experimental chamber is fixedly connected with a shock wave generating device. The shock wave generating device includes a first fixing ring, which is fixedly connected to the inner wall of the experimental chamber. The inner wall of the first fixing ring is fixedly connected with a pressing ring. A shock wave device is arranged in the inner cavity of the pressing ring. By setting the shock wave generating device, when working, a shock wave can be applied in the inner cavity of the experimental chamber to detect whether the shock wave can ignite methane gas, and when the methane gas explodes, the shock wave device can be automatically clamped to prevent the shock wave device from falling off due to the explosion. By setting the first fixing ring and the pressing ring, the shock wave device can be positioned. On the side of the inner wall of the experimental chamber away from the first fixing ring, a wire feeding mechanism is fixedly connected. The wire feeding mechanism includes a second fixing ring, which is fixedly connected to the inner wall of the experimental chamber away from the first fixing ring. The inner wall of the second fixing ring is fixedly connected with a sealing mechanism. The outer surface of the sealing mechanism is fixedly connected with a second support frame. The end of the second support frame is fixedly connected with a clamping mechanism. By setting the wire feeding mechanism, a load can be placed so that the load and the shock wave device are on the same straight line, and after the explosion, the damaged load can be unclamped by the impact force generated by the explosion and automatically discharged from the experimental chamber to facilitate the subsequent replacement of a new load. On the upper surface of the experimental chamber, a pressure relief unit is arranged. The pressure relief unit includes a pressure relief mechanism and a transmission mechanism. The pressure relief mechanism includes a sealing top plate, which is movably connected to the opening of the experimental chamber. The upper surface of the sealing top plate is fixedly connected with a fixed box. By setting the pressure relief mechanism, when the shock wave device detonates methane in the inner cavity of the experimental chamber, the energy generated by the explosion can be relieved to protect the safety of the experimental chamber, and different pressure relief methods can be adjusted according to the amount of explosion pressure. When the pressure is not enough to threaten the experimental chamber, the breaking of the paper sheet is used to achieve the pressure relief effect, and when the pressure is too high, the size of the pressure relief hole can be increased, and the released pressure can be used to increase the extrusion force on the shock wave device. By setting the pressure relief mechanism, different pressure relief methods can be changed according to the size of the pressure generated by the explosion.

[0005] Preferably, a first support frame is fixedly connected to the upper surface of the bottom plate. The top end of the first support frame is fixedly connected with a high-speed camera, and the camera of the high-speed camera faces the acrylic plate. By setting the high-speed camera, it can face the acrylic plate directly, so that when the shock wave device works, the moment of explosion can be recorded, and thus when summarizing the subsequent experiments, accurate experimental data can be obtained. A methane gas cylinder is fixedly connected to the upper surface of the bottom plate. The opening of the methane gas cylinder is fixedly connected with a first connecting pipe, and the end of the first connecting pipe is fixedly connected with a first valve. The first valve penetrates through the experimental chamber. By setting the methane gas cylinder and the first valve, the content of methane gas entering the inner cavity of the experimental chamber can be controlled, and after the methane gas enters the inner cavity of the experimental chamber, the connection between the methane gas cylinder and the experimental chamber can be cut off, thereby preventing the explosion from affecting the methane gas cylinder. An optical methane detector is fixedly connected to the corner of the upper surface of the bottom plate. The output end of the optical methane detector is fixedly connected with a second connecting pipe, and the end of the second connecting pipe is fixedly connected with a second valve. The second valve penetrates through the experimental chamber. By setting the optical methane detector, the methane content in the inner cavity of the experimental chamber can be detected, and thus the methane content in the inner cavity of the experimental chamber can be controlled, achieving the effect of controlling experimental data.

[0006] Preferably, a stone ring is fixedly connected to the inner wall of the first fixing ring. A first sealing ring is fixedly connected to the inner ring of the pressing ring. The first sealing ring is in extrusion fit with the outer surface of the shock wave device. A second sealing ring is fixedly connected to the inner ring of the pressing ring. The second sealing ring is in extrusion fit with the shock wave device. By setting the first sealing ring and the second sealing ring, the sealing performance between the pressing ring and the outer surface of the shock wave device can be increased, thereby achieving the effect of preventing methane from leaking through the gap. A positive electrode frame is arranged at the end of the shock wave device. A power connection rod is fixedly connected to the upper surface of the positive electrode frame. The end of the power connection rod penetrates through the second support frame. The end of the power connection rod is fixedly connected with a negative electrode frame. The negative electrode frame, the sealing mechanism and the clamping mechanism are in the same straight line.

[0007] Preferably, a fixing plate is fixedly connected to the upper surface of the first fixing ring. A track frame penetrates through the upper surface of the fixing plate. A sliding rod is slidably connected to the inner cavity of the track frame. The top end of the sliding rod is fixedly connected with a sliding block. The end of the sliding rod far away from the sliding block is fixedly connected with a pressing frame. The pressing frame is in extrusion fit with the outer surface of the shock wave device. By setting the track frame, the sliding rod can be limited, so that when the sliding block is subjected to an extrusion force, the sliding rod can move horizontally in the inner cavity of the track frame, and then the pressing frame can move stably towards the shock wave device.

[0008] Preferably, a limiting tube penetrates through the upper surface of the pressing ring. A sliding plate is slidably connected to the inner cavity of the limiting tube. An extrusion block is fixedly connected to the lower surface of the sliding plate. The extrusion block is in extrusion fit with the upper surface of the shock wave device. A connecting rod is fixedly connected to the upper surface of the sliding plate. A wedge block is fixedly connected to the top end of the connecting rod. An extrusion rod is fixedly connected to one side of the sliding rod close to the wedge block. The end of the extrusion rod is in extrusion fit with the wedge block.

[0009] Preferably, a wire inlet pipe is fixedly connected to one side of the second fixing ring away from the sealing mechanism. The sealing mechanism includes a third fixing ring. The third fixing ring is fixedly connected to one side of the second fixing ring away from the wire inlet pipe. Elastic sheets are fixedly connected to the inner wall of the third fixing ring. The number of the elastic sheets is three. The three elastic sheets are evenly distributed. Sealing plates are fixedly connected to the ends of the three elastic sheets. The three sealing plates are in extrusion fit with each other. By providing the wire inlet pipe, it is convenient for the operator to insert the load into the inner cavity of the second fixing ring. By providing the elastic sheets, the sealing plates can move to a certain extent in the inner cavity of the third fixing ring. Thus, when the load is inserted into the inner cavity of the third fixing ring, the sealing plates can be extruded, and then the load can pass through the third fixing ring. By providing three sealing plates, when the load does not exert extrusion, the three sealing plates can be pressed against each other, thus achieving a sealing effect.

[0010] Preferably, the clamping mechanism includes a wrapping frame. The wrapping frame is fixedly connected to the outer surface of the second support frame away from the third fixing ring. A limiting frame is fixedly connected to the outer surface of the wrapping frame. A rotating rod is rotatably connected to the inner cavity of the limiting frame. An extrusion cone is fixedly connected to the upper surface of the rotating rod. The extrusion cone is in extrusion fit with the outer surface of the sealing plate. A blocking rod is fixedly connected to one end of the rotating rod close to the wrapping frame. The blocking rod is in frictional fit with the inner wall of the wrapping frame. By providing the clamping mechanism, the load can be clamped. Thus, during the experiment, the load can be aligned with the shock wave device, and after the load is damaged, the damaged load can be discharged. By providing the limiting frame, the rotating rod can be limited, so that the rotating rod can drive the extrusion cone and the blocking rod to rotate stably. By providing the extrusion cone, when the sealing plate is extruded and moves downward by the load, the extrusion cone will drive the rotating rod to move downward, so that the blocking rod no longer supports the load.

[0011] Preferably, a third support frame is fixedly connected to the side of the rotating rod away from the limiting frame. The end of the third support frame is fixedly connected to a first piston. An arc-shaped tube is sleeved on the outer surface of the first piston. A support plate is fixedly connected to the outer surface of the arc-shaped tube. The end of the support plate is fixedly connected to the inner wall of the second fixing ring. By providing the arc-shaped tube, when the rotating rod rotates and drives the third support frame and the first piston to move, the first piston can be limited, and when the first piston moves, the internal pressure can be changed. A second piston is slidably connected to the end of the arc-shaped tube. A fixing rod is fixedly connected to the end of the second piston. The bottom end of the fixing rod is fixedly connected to a sliding frame. The sliding frame is slidably connected to the outer surface of the second fixing ring. A blocking plate is fixedly connected to the lower surface of the sliding frame. A material leakage hole is formed in the lower surface of the experimental chamber. The blocking plate is located directly above the material leakage hole. By providing the second piston, when the internal pressure of the arc-shaped tube changes due to the movement of the first piston, the second piston can be driven to move, and then the sliding frame can be driven to rotate on the outer surface of the second fixing ring, and finally the blocking plate no longer blocks the material leakage hole, so that the damaged load can be discharged.

[0012] Preferably, a round tube penetrates through the upper surface of the fixed box. A blocking frame is slidably connected to the inner cavity of the round tube. A pressure relief port penetrates through the upper surface of the sealing top plate. A circular piece of paper is movably connected to the upper surface of the pressure relief port. The blocking frame is in pressing fit with the upper surface of the circular piece of paper. A fixing frame is fixedly connected to the outer side of the fixed box. A rotating ring is fixedly connected to the end of the fixing frame. A limiting rod is rotatably connected to the inner cavity of the rotating ring. The end of the limiting rod is fixedly connected to a fourth support frame. The fourth support frame is fixedly connected to the upper surface of the experimental chamber. By providing the pressure relief port, after an explosion occurs in the inner cavity of the experimental chamber, the airflow generated by the explosion can be discharged. By providing the round tube, the blocking frame can be limited. After the circular piece of paper covers the pressure relief port, the blocking frame can slide in the inner cavity of the round tube and press the circular piece of paper. By providing the rotating ring, it can rotate on the outer surface of the limiting rod, so that the fixed box can rotate stably.

[0013] Preferably, the transmission mechanism includes a fifth support frame fixedly connected to the upper surface of the experimental chamber. The top of the fifth support frame is fixedly connected with a top cover. The lower surface of the top cover is fixedly connected with a telescopic tube. The lower surface of the telescopic tube is fixedly connected with a pressing plate. The outer surface of the sealing top plate is fixedly connected with a connecting block. The end of the connecting block is fixedly connected with a pressing sleeve. The pressing sleeve is in squeezing fit with the pressing plate. The upper surface of the top cover is penetrated by a connecting box. The outer side of the connecting box is penetrated by a third connecting pipe. The end of the third connecting pipe is fixedly connected with a U-shaped tube. The sliding block is slidably connected to the inner wall of the U-shaped tube. The end of the U-shaped tube is fixedly connected with a sixth support frame. The sixth support frame is fixedly connected to the outer surface of the experimental chamber. By setting the telescopic tube, when the pressing sleeve squeezes the lower surface of the pressing plate, the telescopic tube can be telescoped, so that the air inside can enter the inner cavity of the U-shaped tube through the third connecting pipe, and finally the sliding block can be moved.

[0014] The present invention provides an experimental platform for igniting methane by shock waves, which has the following beneficial effects:

[0015] First, in this experimental platform for igniting methane by shock waves, by setting the shock wave generating device, a shock wave can be applied to the inner cavity of the experimental chamber during operation, so as to detect whether the shock wave can ignite methane gas. And when the methane gas explodes, the shock wave device can be automatically clamped, so as to prevent the shock wave device from falling off due to the explosion. By setting the first fixing ring and the pressing ring, the shock wave device can be positioned.

[0016] Second, in this experimental platform for igniting methane by shock waves, by setting the wire feeding mechanism, the load can be placed so that the load and the shock wave device are on the same straight line. And after the explosion, the damaged load can be released from the clamping by using the impact force generated by the explosion, and the damaged load can be automatically discharged from the experimental chamber to facilitate the replacement of a new load later.

[0017] Third, in this experimental platform for igniting methane by shock waves, by setting the pressure relief mechanism, when the shock wave device detonates methane in the inner cavity of the experimental chamber, the energy generated by the explosion can be relieved, thus protecting the safety of the experimental chamber. And different pressure relief methods can be adjusted according to the amount of explosion pressure. When the pressure is not enough to threaten the experimental chamber, the paper sheet is broken to achieve the pressure relief effect. And when the pressure is too high, the size of the pressure relief hole can be increased, and the released pressure can be used to increase the squeezing force on the shock wave device. By setting the pressure relief mechanism, different pressure relief methods can be changed according to the size of the pressure generated by the explosion.

[0018] IV. For the experimental platform for igniting methane with shock waves, by setting up a high-speed camera facing the acrylic plate, the moment of explosion can be recorded when the shock wave device is operating. Therefore, during the subsequent experimental summary, accurate experimental data can be obtained. By setting up a methane gas cylinder and a first valve, the content of methane gas entering the inner cavity of the experimental chamber can be controlled, and after the methane gas enters the inner cavity of the experimental chamber, the connection between the methane gas cylinder and the experimental chamber can be cut off to prevent the explosion from affecting the methane gas cylinder. By setting up an optical methane detector, the methane content in the inner cavity of the experimental chamber can be detected, and further, the methane content in the inner cavity of the experimental chamber can be controlled to achieve the effect of controlling experimental data.

[0019] V. For the experimental platform for igniting methane with shock waves, by setting up a clamping mechanism, the load can be clamped, so that during the experiment, the load can be directly opposite to the shock wave device, and after the load is damaged, the damaged load can be discharged. By setting up a limit frame, the rotating rod can be limited, enabling the rotating rod to drive the extrusion cone and the blocking rod to rotate stably. By setting up the extrusion cone, when the sealing plate is pushed downward by the load, the extrusion cone will drive the rotating rod downward, so that the blocking rod no longer supports the load. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the external structure schematic diagram of an experimental platform for igniting methane with shock waves according to the present invention;

[0021] Figure 2 is the side view of the structure of an experimental platform for igniting methane with shock waves according to the present invention;

[0022] Figure 3 is the partial structure schematic diagram of an experimental platform for igniting methane with shock waves according to the present invention;

[0023] Figure 4 is the structure schematic diagram of a shock wave generating device according to the present invention;

[0024] Figure 5 is the partial structure schematic diagram of a shock wave generating device according to the present invention;

[0025] Figure 6 For the present invention Figure 5 is the enlarged schematic diagram of structure A;

[0026] Figure 7 is the structure schematic diagram of a wire feeding mechanism according to the present invention;

[0027] Figure 8 is the structure schematic diagram of a sealing mechanism according to the present invention;

[0028] Figure 9 is the structure schematic diagram of a clamping mechanism according to the present invention;

[0029] Figure 10 Structural schematic diagram of the pressure relief unit of the present invention;

[0030] Figure 11 Structural schematic diagram of the pressure relief mechanism of the present invention;

[0031] Figure 12 Cross-sectional structural schematic diagram of the pressure relief mechanism of the present invention;

[0032] Figure 13 Structural schematic diagram of the transmission mechanism of the present invention.

[0033] In the figure: 1, bottom plate; 2, frame; 3, experimental chamber; 4, square frame; 5, acrylic plate; 6, shock wave generating device; 7, wire feeding mechanism; 8, pressure relief unit; 9, first support frame; 10, high-speed camera; 11, methane gas cylinder; 12, first connecting pipe; 13, first valve; 14, optical methane detector; 15, second connecting pipe; 16, second valve; 17, material leakage hole; 61, first fixing ring; 62, stone ring; 63, fixing plate; 64, track frame; 65, sliding rod; 66, pressing ring; 67, first sealing ring; 68, second sealing ring; 69, shock wave device; 610, sliding block; 611, extrusion rod; 612, extrusion frame; 613, limiting pipe; 614, sliding plate; 615, extrusion block; 616, connecting rod; 617, wedge block; 618, positive frame; 619, electric connection rod; 620, negative frame; 71, second fixing ring; 72, wire inlet pipe; 73, sealing mechanism; 74, second support frame; 75, clamping mechanism; 76, support plate; 77, arc-shaped pipe; 78, sliding frame; 79, blocking plate; 710, fixing rod; 711, second piston; 731, third fixing ring; 732, elastic sheet; 733, sealing plate; 751, wrapping frame; 752, limiting frame; 753, rotating rod; 754, extrusion cone; 755, blocking rod; 756, third support frame; 757, first piston; 81, pressure relief mechanism; 82, transmission mechanism; 811, fourth support frame; 812, limiting rod; 813, rotating ring; 814, fixing frame; 815, fixing box; 816, sealing top plate; 817, pressure relief port; 818, round pipe; 819, circular paper sheet; 8110, blocking frame; 8111, connecting block; 8112, extrusion sleeve; 821, fifth support frame; 822, top cover; 823, telescopic pipe; 824, extrusion plate; 825, connecting box; 826, third connecting pipe; 827, U-shaped pipe; 828, sixth support frame. Detailed implementation manners

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The examples of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better explain the principles of the present invention and its practical applications, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific purposes.

[0035] The first embodiment is as Figures 1-6As shown in the figure, the present invention provides a technical solution: an experimental platform for igniting methane by shock wave, including a bottom plate 1. The upper surface of the bottom plate 1 is fixedly connected with a frame 2. The top end of the frame 2 is fixedly connected with an experimental chamber 3. The outer side surface of the experimental chamber 3 is symmetrically penetrated by a square frame 4. The inner wall of the square frame 4 is fixedly connected with an acrylic plate 5. The acrylic plate 5 is made of organic glass with a thickness of more than ten millimeters, which is a material with transparency and certain strength, and can facilitate the operator to observe the situation inside the experimental chamber 3. The inner wall of the experimental chamber 3 is fixedly connected with a shock wave generating device 6. The shock wave generating device 6 includes a first fixing ring 61. The first fixing ring 61 is fixedly connected to the inner wall of the experimental chamber 3. The inner wall of the first fixing ring 61 is fixedly connected with a pressure ring 66. A shock wave device 69 is arranged in the inner cavity of the pressure ring 66. By setting the shock wave generating device 6, when working, a shock wave can be applied in the inner cavity of the experimental chamber 3, so as to detect whether the shock wave can ignite methane gas, and when the methane gas explodes, the shock wave device 69 can be automatically clamped, so as to prevent the shock wave device 69 from falling off due to the explosion. By setting the first fixing ring 61 and the pressure ring 66, the shock wave device 69 can be positioned. On the side of the inner wall of the experimental chamber 3 away from the first fixing ring 61, a wire feeding mechanism 7 is fixedly connected. The wire feeding mechanism 7 includes a second fixing ring 71. The second fixing ring 71 is fixedly connected to the side of the inner wall of the experimental chamber 3 away from the first fixing ring 61. The inner wall of the second fixing ring 71 is fixedly connected with a sealing mechanism 73. The outer surface of the sealing mechanism 73 is fixedly connected with a second support frame 74. The end of the second support frame 74 is fixedly connected with a clamping mechanism 75. By setting the wire feeding mechanism 7, a load can be placed, so that the load can be in the same straight line as the shock wave device 69, and after the explosion, the damaged load can be unclamped by the impact force generated by the explosion and automatically discharged from the experimental chamber 3 to facilitate the replacement of a new load in the subsequent process. On the upper surface of the experimental chamber 3, a pressure relief unit 8 is arranged. The pressure relief unit 8 includes a pressure relief mechanism 81 and a transmission mechanism 82. The pressure relief mechanism 81 includes a sealing top plate 816. The sealing top plate 816 is movably connected to the opening of the experimental chamber 3. The upper surface of the sealing top plate 816 is fixedly connected with a fixed box 815. By setting the pressure relief mechanism 81, when the shock wave device 69 detonates methane in the inner cavity of the experimental chamber 3, the energy generated by the explosion can be relieved, so as to protect the safety of the experimental chamber 3, and different pressure relief methods can be adjusted according to the amount of explosion pressure. When the pressure is not enough to threaten the experimental chamber 3, the fragmentation of the paper sheet is used to achieve the effect of pressure relief. When the pressure is too high, the size of the pressure relief hole can be increased, and the released pressure can be used to increase the extrusion force on the shock wave device 69. By setting the pressure relief mechanism 81, different pressure relief methods can be changed according to the size of the pressure generated by the explosion.

[0036] The upper surface of the bottom plate 1 is fixedly connected with a first support frame 9. The top end of the first support frame 9 is fixedly connected with a high-speed camera 10. The camera of the high-speed camera 10 faces the acrylic plate 5. By setting the high-speed camera 10, it can face the acrylic plate 5 directly. Thus, when the shock wave device 69 works, the moment of explosion can be recorded. Therefore, when summarizing the subsequent experiments, accurate experimental data can be obtained. The upper surface of the bottom plate 1 is fixedly connected with a methane gas cylinder 11. The opening of the methane gas cylinder 11 is fixedly connected with a first connecting pipe 12. The end of the first connecting pipe 12 is fixedly connected with a first valve 13. The first valve 13 penetrates through the experimental chamber 3. By setting the methane gas cylinder 11 and the first valve 13, the content of methane gas entering the inner cavity of the experimental chamber 3 can be controlled. And after the methane gas enters the inner cavity of the experimental chamber 3, the connection between the methane gas cylinder 11 and the experimental chamber 3 can be cut off, so as to prevent the explosion from affecting the methane gas cylinder 11. At the same time, the first valve 13 can be disconnected from the first connecting pipe 12, so that the first valve 13 can be connected to a water pipe, and then water flow can be poured into the inner cavity of the experimental chamber 3, so that the experimental chamber 3 is in a semi-flooded state. At the corners of the upper surface of the bottom plate 1, an optical methane detector 14 is fixedly connected. The output end of the optical methane detector 14 is fixedly connected with a second connecting pipe 15. The end of the second connecting pipe 15 is fixedly connected with a second valve 16. The second valve 16 penetrates through the experimental chamber 3. By setting the optical methane detector 14, the methane content in the inner cavity of the experimental chamber 3 can be detected, and then the methane content in the inner cavity of the experimental chamber 3 can be controlled, achieving the effect of controlling experimental data.

[0037] A stone ring 62 is fixedly connected to the inner wall of the first fixing ring 61. A first sealing ring 67 is fixedly connected to the inner ring of the pressing ring 66. The first sealing ring 67 is in extrusion fit with the outer surface of the shock wave device 69. A second sealing ring 68 is fixedly connected to the inner ring of the pressing ring 66. The second sealing ring 68 is in extrusion fit with the shock wave device 69. By setting the first sealing ring 67 and the second sealing ring 68, the sealing performance between the pressing ring 66 and the outer surface of the shock wave device 69 can be increased, so as to achieve the effect of preventing methane from leaking out of the gap. An anode frame 618 is arranged at the end of the shock wave device 69. A power connection rod 619 is fixedly connected to the upper surface of the anode frame 618. The end of the power connection rod 619 penetrates through the second support frame 74. A cathode frame 620 is fixedly connected to the end of the power connection rod 619. The cathode frame 620, the sealing mechanism 73 and the clamping mechanism 75 are in the same straight line. By setting the anode frame 618 and the cathode frame 620, when both ends of the load are respectively connected to the anode frame 618 and the cathode frame 620 and the shock wave device 69 is connected to the pulse power driver and works, the load can be energized with high voltage, so that the load can ignite methane and generate an explosion. A fixing plate 63 is fixedly connected to the upper surface of the first fixing ring 61. A track frame 64 penetrates through the upper surface of the fixing plate 63. A sliding rod 65 is slidably connected to the inner cavity of the track frame 64. A sliding block 610 is fixedly connected to the top end of the sliding rod 65. An extrusion frame 612 is fixedly connected to the end of the sliding rod 65 away from the sliding block 610. The extrusion frame 612 is in extrusion fit with the outer surface of the shock wave device 69. By setting the track frame 64, the sliding rod 65 can be limited, so that when the sliding block 610 is subjected to an extrusion force, the sliding rod 65 can move horizontally in the inner cavity of the track frame 64, and then the extrusion frame 612 can move stably towards the shock wave device 69. A limiting tube 613 penetrates through the upper surface of the pressing ring 66. A sliding plate 614 is slidably connected to the inner cavity of the limiting tube 613. An extrusion block 615 is fixedly connected to the lower surface of the sliding plate 614. The extrusion block 615 is in extrusion fit with the upper surface of the shock wave device 69. A connecting rod 616 is fixedly connected to the upper surface of the sliding plate 614. A wedge block 617 is fixedly connected to the top end of the connecting rod 616. An extrusion rod 611 is fixedly connected to the side of the sliding rod 65 close to the wedge block 617. The end of the extrusion rod 611 is in extrusion fit with the wedge block 617. By setting the limiting tube 613, the sliding plate 614 can be limited, so that the sliding plate 614 can move vertically up and down in the inner cavity of the limiting tube 613. By setting the extrusion block 615, after the sliding plate 614 moves downward, the extrusion block 615 can press the upper surface of the shock wave device 69, so that the shock wave device 69 is positioned. By setting the wedge block 617, when the sliding rod 65 drives the extrusion rod 611 to move, the wedge block 617 can be extruded and has a tendency to move downward.

[0038] The second embodiment is as follows Figure 7 - Figure 9 As shown, on one side of the second fixing ring 71 away from the sealing mechanism 73, a wire inlet pipe 72 is fixedly connected. The sealing mechanism 73 includes a third fixing ring 731. The third fixing ring 731 is fixedly connected to one side of the second fixing ring 71 away from the wire inlet pipe 72. At the inner wall of the third fixing ring 731, a spring piece 732 is fixedly connected. The number of the spring pieces 732 is three, and the three spring pieces 732 are evenly distributed. At the ends of the three spring pieces 732, sealing plates 733 are fixedly connected, and the three sealing plates 733 are in pressing fit with each other. By providing the wire inlet pipe 72, it is convenient for the operator to insert the load into the inner cavity of the second fixing ring 71. By providing the spring pieces 732, the sealing plates 733 can have a certain movement in the inner cavity of the third fixing ring 731. Thus, when the load is inserted into the inner cavity of the third fixing ring 731, the sealing plates 733 can be pressed, and then the load can pass through the third fixing ring 731. By providing three sealing plates 733, when the load is not pressing, the three sealing plates 733 can be pressed together with each other, thereby achieving the sealing effect.

[0039] The clamping mechanism 75 includes a wrapping frame 751 which is fixedly connected to the outer surface of the second support frame 74 away from the third fixing ring 731. A limiting frame 752 is fixedly connected to the outer surface of the wrapping frame 751. A rotating rod 753 is rotatably connected to the inner cavity of the limiting frame 752. An extrusion cone 754 is fixedly connected to the upper surface of the rotating rod 753. The extrusion cone 754 is in extrusion fit with the outer surface of the sealing plate 733. A blocking rod 755 is fixedly connected to one end of the rotating rod 753 close to the wrapping frame 751. The blocking rod 755 is in frictional fit with the inner wall of the wrapping frame 751. By providing the clamping mechanism 75, the load can be clamped, so that during the experiment, the load can be directly opposite to the shock wave device 69, and after the load is damaged, the damaged load can be discharged. By providing the limiting frame 752, the rotating rod 753 can be limited, so that the rotating rod 753 can drive the extrusion cone 754 and the blocking rod 755 to rotate stably. By providing the extrusion cone 754, when the sealing plate 733 is extruded and moves downward by the load, the extrusion cone 754 will drive the rotating rod 753 to move downward, so that the blocking rod 755 no longer supports the load. A third support frame 756 is fixedly connected to one side of the rotating rod 753 away from the limiting frame 752. A first piston 757 is fixedly connected to the end of the third support frame 756. An arc-shaped tube 77 is sleeved on the outer surface of the first piston 757. A support plate 76 is fixedly connected to the outer surface of the arc-shaped tube 77. The end of the support plate 76 is fixedly connected to the inner wall of the second fixing ring 71. By providing the arc-shaped tube 77, when the rotating rod 753 rotates and drives the third support frame 756 and the first piston 757 to move, the first piston 757 can be limited, and when the first piston 757 moves, the internal pressure can be changed. A second piston 711 is slidably connected to the end of the arc-shaped tube 77. A fixing rod 710 is fixedly connected to the end of the second piston 711. The bottom end of the fixing rod 710 is fixedly connected to a sliding frame 78. The sliding frame 78 is slidably connected to the outer surface of the second fixing ring 71. A blocking plate 79 is fixedly connected to the lower surface of the sliding frame 78. A material leakage hole 17 is formed in the lower surface of the experimental chamber 3. The blocking plate 79 is located directly above the material leakage hole 17. By providing the second piston 711, when the internal pressure of the arc-shaped tube 77 changes due to the movement of the first piston 757, the second piston 711 can move, thereby driving the sliding frame 78 to rotate on the outer surface of the second fixing ring 71, and finally the blocking plate 79 no longer blocks the material leakage hole 17, so that the damaged load can be discharged. At the same time, when the blocking plate 79 blocks the material leakage hole 17, the accumulated water in the inner cavity of the experimental chamber 3 will not leak out, and when the blocking plate 79 is away from the material leakage hole 17, the accumulated water in the inner cavity of the experimental chamber 3 can be discharged from the experimental chamber 3 through the material leakage hole 17.

[0040] The third embodiment is as follows Figure 10 - Figure 13 As shown in the figure, a circular tube 818 penetrates through the upper surface of the fixed box 815. A plugging frame 8110 is slidably connected to the inner cavity of the circular tube 818. A pressure relief port 817 penetrates through the upper surface of the sealing top plate 816. A circular paper sheet 819 is movably connected to the upper surface of the pressure relief port 817. The upper surface of the plugging frame 8110 is in pressing fit with the circular paper sheet 819. A fixing frame 814 is fixedly connected to the outer side surface of the fixed box 815. A rotating ring 813 is fixedly connected to the end of the fixing frame 814. A limiting rod 812 is rotatably connected to the inner cavity of the rotating ring 813. The end of the limiting rod 812 is fixedly connected to a fourth support frame 811. The fourth support frame 811 is fixedly connected to the upper surface of the experimental chamber 3. By providing the pressure relief port 817, after an explosion occurs in the inner cavity of the experimental chamber 3, the airflow generated by the explosion can be discharged. By providing the circular tube 818, the plugging frame 8110 can be limited. After the circular paper sheet 819 covers the pressure relief port 817, the plugging frame 8110 can slide in the inner cavity of the circular tube 818 and press the circular paper sheet 819. By providing the rotating ring 813, it can rotate on the outer surface of the limiting rod 812, so that the fixed box 815 can rotate stably.

[0041] The transmission mechanism 82 includes a fifth support frame 821. The fifth support frame 821 is fixedly connected to the upper surface of the experimental chamber 3. The top of the fifth support frame 821 is fixedly connected to a top cover 822. A telescopic tube 823 is fixedly connected to the lower surface of the top cover 822. A pressing plate 824 is fixedly connected to the lower surface of the telescopic tube 823. A connecting block 8111 is fixedly connected to the outer surface of the sealing top plate 816. A pressing sleeve 8112 is fixedly connected to the end of the connecting block 8111. The pressing sleeve 8112 is in pressing fit with the pressing plate 824. A connecting box 825 penetrates through the upper surface of the top cover 822. A third connecting pipe 826 penetrates through the outer side surface of the connecting box 825. A U-shaped pipe 827 is fixedly connected to the end of the third connecting pipe 826. The sliding block 610 is slidably connected to the inner wall of the U-shaped pipe 827. A sixth support frame 828 is fixedly connected to the end of the U-shaped pipe 827. The sixth support frame 828 is fixedly connected to the outer surface of the experimental chamber 3. By providing the telescopic tube 823, when the pressing sleeve 8112 presses the lower surface of the pressing plate 824, the telescopic tube 823 can be telescoped, so that the air inside enters the inner cavity of the U-shaped pipe 827 through the third connecting pipe 826, and finally the sliding block 610 moves.

[0042] Working principle: When in use, position the load: The operator inserts the load into the inner cavity of the second fixing ring 71 through the wire feeding tube 72. During the insertion process, the load squeezes the sealing plate 733 and enters the inner cavity of the wrapping frame 751. Install the shock wave device 69. The operator inserts the shock wave device 69 into the inner cavity of the pressure ring 66, and connects the two ends of the load to the positive electrode frame 618 and the negative electrode frame 620 respectively, and makes the first sealing ring 67 and the second sealing ring 68 tightly contact the outer surface of the shock wave device 69. After completing the preparation work, the operator adjusts the first valve 13, so that the methane in the methane gas cylinder 11 is discharged and enters the inner cavity of the experimental chamber 3 through the first connecting tube 12, and the methane concentration in the inner cavity of the experimental chamber 3 is detected by the optical methane detector 14. Then, the shock wave device 69 is connected to the pulse power driving source and the switch is turned on, so that the shock wave device 69 releases a high voltage and breaks down the load. When a small-scale explosion occurs in the inner cavity of the experimental chamber 3, the shock wave generated by the explosion will shatter the circular paper sheet 819, so that the gas can be discharged from the pressure relief port 817. When a large-scale explosion occurs in the inner cavity of the experimental chamber 3, while the circular paper sheet 819 is shattered by the gas generated by the explosion, the sealing top plate 816 will move and open. During the opening process, the extrusion sleeve 8112 will extrude the lower surface of the extrusion plate 824, and at the same time the telescopic tube 823 will contract. During the contraction process, the internal air is compressed, so that the sliding block 610 in the inner cavity of the U-shaped tube 827 moves. During the movement of the sliding block 610, the sliding rod 65 drives the extrusion frame 612 and the extrusion rod 611 to move, and finally the extrusion block 615 extrudes the upper surface of the shock wave device 69, and the extrusion frame 612 extrudes the outer surface of the shock wave device 69, achieving the effect of positioning the shock wave device 69 and preventing the shock wave device 69 from loosening. When an explosion occurs in the inner cavity of the experimental chamber 3, the internal pressure changes rapidly, which will cause the elastic sheet 732 to deform, and then the sealing plate 733 will squeeze the extrusion cone 754, and then the rotating rod 753 will drive the third support frame 756 to move, so that the load in the inner cavity of the wrapping frame 751 leaks down. During the sliding of the first piston 757, the air pressure in the inner cavity of the arc tube 77 changes, and the second piston 711 drives the sliding frame 78 and the blocking plate 79 to slide, and finally the damaged load leaks out through the material leakage hole 17.

[0043] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art and related fields without creative efforts shall fall within the protection scope of the present invention. The structures, devices and operation methods not specifically described and explained in the present invention, unless otherwise specified and limited, are implemented according to the conventional means in the art.

Claims

1. An experimental platform for igniting methane by shock wave, comprising a bottom plate (1), wherein the upper surface of the bottom plate (1) is fixedly connected with a frame (2), and the top end of the frame (2) is fixedly connected with an experimental chamber (3), characterized in that: On the outer side surface of the experimental chamber (3), a square frame (4) penetrates symmetrically. An acrylic plate (5) is fixedly connected to the inner wall of the square frame (4). A shock wave generating device (6) is fixedly connected to the inner wall of the experimental chamber (3). The shock wave generating device (6) includes a first fixing ring (61), the first fixing ring (61) is fixedly connected to the inner wall of the experimental chamber (3), a pressure ring (66) is fixedly connected to the inner wall of the first fixing ring (61), and a shock wave device (69) is arranged in the inner cavity of the pressure ring (66); on the side of the inner wall of the experimental chamber (3) away from the first fixing ring (61), a wire feeding mechanism (7) is fixedly connected. The wire feeding mechanism (7) includes a second fixing ring (71), the second fixing ring (71) is fixedly connected to the side of the inner wall of the experimental chamber (3) away from the first fixing ring (61), a sealing mechanism (73) is fixedly connected to the inner wall of the second fixing ring (71), a second support frame (74) is fixedly connected to the outer surface of the sealing mechanism (73), and a clamping mechanism (75) is fixedly connected to the end of the second support frame (74); a pressure relief unit (8) is arranged on the upper surface of the experimental chamber (3). The pressure relief unit (8) includes a pressure relief mechanism (81) and a transmission mechanism (82). The pressure relief mechanism (81) includes a sealing top plate (816), the sealing top plate (816) is movably connected to the opening of the experimental chamber (3), and a fixed box (815) is fixedly connected to the upper surface of the sealing top plate (816).

2. The experimental platform for igniting methane by shock wave according to claim 1, characterized in that: On the upper surface of the bottom plate (1), a first support frame (9) is fixedly connected. The top end of the first support frame (9) is fixedly connected with a high-speed camera (10), and the camera of the high-speed camera (10) faces the acrylic plate (5). A methane gas cylinder (11) is fixedly connected to the upper surface of the bottom plate (1). The opening of the methane gas cylinder (11) is fixedly connected with a first connecting pipe (12). The end of the first connecting pipe (12) is fixedly connected with a first valve (13). The first valve (13) penetrates the experimental chamber (3). At the corner of the upper surface of the bottom plate (1), an optical methane detector (14) is fixedly connected. The output end of the optical methane detector (14) is fixedly connected with a second connecting pipe (15). The end of the second connecting pipe (15) is fixedly connected with a second valve (16). The second valve (16) penetrates the experimental chamber (3).

3. The experimental platform for igniting methane by shock wave according to claim 1, characterized in that: A stone ring (62) is fixedly connected to the inner wall of the first fixing ring (61). A first sealing ring (67) is fixedly connected to the inner ring of the pressing ring (66). The first sealing ring (67) is in extrusion fit with the outer surface of the shock wave device (69). A second sealing ring (68) is fixedly connected to the inner ring of the pressing ring (66). The second sealing ring (68) is in extrusion fit with the shock wave device (69). An anode frame (618) is arranged at the end of the shock wave device (69). A power connection rod (619) is fixedly connected to the upper surface of the anode frame (618). The end of the power connection rod (619) penetrates through the second support frame (74). A cathode frame (620) is fixedly connected to the end of the power connection rod (619). The cathode frame (620), the sealing mechanism (73) and the clamping mechanism (75) are on the same straight line.

4. An experimental platform for igniting methane by shock wave according to claim 3, characterized in that: A fixing plate (63) is fixedly connected to the upper surface of the first fixing ring (61). A track frame (64) penetrates through the upper surface of the fixing plate (63). A sliding rod (65) is slidably connected to the inner cavity of the track frame (64). A sliding block (610) is fixedly connected to the top end of the sliding rod (65). An extrusion frame (612) is fixedly connected to the end of the sliding rod (65) away from the sliding block (610). The extrusion frame (612) is in extrusion fit with the outer surface of the shock wave device (69).

5. An experimental platform for igniting methane by shock wave according to claim 4, characterized in that: A limiting tube (613) penetrates through the upper surface of the pressing ring (66). A sliding plate (614) is slidably connected to the inner cavity of the limiting tube (613). An extrusion block (615) is fixedly connected to the lower surface of the sliding plate (614). The extrusion block (615) is in extrusion fit with the upper surface of the shock wave device (69). A connecting rod (616) is fixedly connected to the upper surface of the sliding plate (614). A wedge block (617) is fixedly connected to the top end of the connecting rod (616). An extrusion rod (611) is fixedly connected to the side of the sliding rod (65) close to the wedge block (617). The end of the extrusion rod (611) is in extrusion fit with the wedge block (617).

6. The experimental platform for igniting methane by shock wave according to claim 5, characterized in that: A wire inlet pipe (72) is fixedly connected to the side of the second fixing ring (71) away from the sealing mechanism (73). The sealing mechanism (73) includes a third fixing ring (731). The third fixing ring (731) is fixedly connected to the side of the second fixing ring (71) away from the wire inlet pipe (72). A spring piece (732) is fixedly connected to the inner wall of the third fixing ring (731). The number of the spring pieces (732) is three. The three spring pieces (732) are evenly distributed. Sealing plates (733) are fixedly connected to the ends of the three spring pieces (732). The three sealing plates (733) are in extrusion fit with each other.

7. The experimental platform for igniting methane by shock wave according to claim 6, characterized in that: The clamping mechanism (75) includes a wrapping frame (751), the wrapping frame (751) is fixedly connected to the outer surface of the second support frame (74) away from the third fixing ring (731), a limiting frame (752) is fixedly connected to the outer surface of the wrapping frame (751), a rotating rod (753) is rotatably connected to the inner cavity of the limiting frame (752), an extrusion cone (754) is fixedly connected to the upper surface of the rotating rod (753), the extrusion cone (754) is in extrusion fit with the outer surface of the sealing plate (733), a blocking rod (755) is fixedly connected to one end of the rotating rod (753) close to the wrapping frame (751), and the blocking rod (755) is in frictional fit with the inner wall of the wrapping frame (751).

8. An experimental platform for igniting methane by shock wave according to claim 7, characterized in that: A third support frame (756) is fixedly connected to the side of the rotating rod (753) away from the limiting frame (752), a first piston (757) is fixedly connected to the end of the third support frame (756), an arc-shaped pipe (77) is sleeved on the outer surface of the first piston (757), a support plate (76) is fixedly connected to the outer surface of the arc-shaped pipe (77), the end of the support plate (76) is fixedly connected to the inner wall of the second fixing ring (71), a second piston (711) is slidably connected to the end of the arc-shaped pipe (77), a fixing rod (710) is fixedly connected to the end of the second piston (711), a sliding frame (78) is fixedly connected to the bottom end of the fixing rod (710), the sliding frame (78) is slidably connected to the outer surface of the second fixing ring (71), a blocking plate (79) is fixedly connected to the lower surface of the sliding frame (78), a material leakage hole (17) is formed in the lower surface of the experimental chamber (3), and the blocking plate (79) is located directly above the material leakage hole (17).

9. The experimental platform for igniting methane by shock wave according to claim 8, characterized in that: A round pipe (818) penetrates through the upper surface of the fixed box (815), a blocking frame (8110) is slidably connected to the inner cavity of the round pipe (818), a pressure relief port (817) penetrates through the upper surface of the sealing top plate (816), a circular paper sheet (819) is movably connected to the upper surface of the pressure relief port (817), the blocking frame (8110) is in extrusion fit with the upper surface of the circular paper sheet (819), a fixing frame (814) is fixedly connected to the outer side surface of the fixed box (815), a rotating ring (813) is fixedly connected to the end of the fixing frame (814), a limiting rod (812) is rotatably connected to the inner cavity of the rotating ring (813), a fourth support frame (811) is fixedly connected to the end of the limiting rod (812), and the fourth support frame (811) is fixedly connected to the upper surface of the experimental chamber (3).

10. An experimental platform for igniting methane by shock wave according to claim 9, characterized in that: The transmission mechanism (82) includes a fifth support frame (821) fixedly connected to the upper surface of the experimental chamber (3). The top end of the fifth support frame (821) is fixedly connected with a top cover (822). The lower surface of the top cover (822) is fixedly connected with a telescopic tube (823). The lower surface of the telescopic tube (823) is fixedly connected with a pressing plate (824). The outer surface of the sealing top plate (816) is fixedly connected with a connecting block (8111). The end of the connecting block (8111) is fixedly connected with a pressing sleeve (8112). The pressing sleeve (8112) is in pressing fit with the pressing plate (824). A connecting box (825) penetrates through the upper surface of the top cover (822). A third connecting pipe (826) penetrates through the outer side of the connecting box (825). The end of the third connecting pipe (826) is fixedly connected with a U-shaped pipe (827). The sliding block (610) is slidably connected to the inner wall of the U-shaped pipe (827). The end of the U-shaped pipe (827) is fixedly connected with a sixth support frame (828). The sixth support frame (828) is fixedly connected to the outer surface of the experimental chamber (3).

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