Liquid oxygen explosion experiment device

Abstract

This invention relates to the field of blasting engineering technology and discloses a liquid oxygen blasting experimental device, including a base, a chamber fixedly connected to the top of the base, a liquid oxygen tank fixedly connected to the top of the chamber, a delivery pipe fixedly connected to the output end of the liquid oxygen tank, a cut-off connector installed inside the chamber, a connecting tail pipe fixedly connected to the end of the cut-off connector away from the delivery pipe, a test tube fixedly connected to the inner wall of the chamber, a fixing component disposed inside the test tube, a blasting core tube installed at the end of the fixing component away from the test tube, and a connecting component disposed between the connecting tail pipe and the blasting core tube. Through the synergistic action of the fixing component and the anti-slip component, the fixing component can stably position the blasting core tube, and the anti-slip component further restricts the displacement of the blasting core tube, which helps to prevent the blasting core tube from moving during the blasting process, ensuring accurate blasting position and improving the accuracy of experimental data.

Description

Technical Field

[0001] This invention relates to the field of blasting engineering technology, specifically to a liquid oxygen blasting experimental device. Background Technology

[0002] The liquid oxygen blasting experimental device is a specialized experimental equipment in the field of blasting engineering technology used to simulate the liquid oxygen blasting process, collect blasting-related parameters, and verify the feasibility of blasting schemes. It is mainly used to study the blasting effect, pressure change law, and safety control points after liquid oxygen interacts with combustibles, providing data support and technical reference for liquid oxygen blasting construction in actual engineering.

[0003] Currently, liquid oxygen explosion experiments are mostly conducted using specialized experimental equipment. Existing liquid oxygen explosion experimental equipment typically includes a base to support various components, a liquid oxygen tank to provide liquid oxygen, a pipeline structure for transporting liquid oxygen, a positioning structure for fixing the explosion components, a closed cavity for simulating the explosion environment, and monitoring components for monitoring experimental parameters. The experiment is completed through the process of liquid oxygen transportation, ignition and detonation, and parameter acquisition.

[0004] The existing liquid oxygen blasting experimental apparatus suffers from an unreasonable positioning structure design, resulting in poor fixation of the blasting core tube and a lack of effective auxiliary anti-slip structures. This leads to easy displacement of the blasting core tube during the blasting process. The connection points utilize only a single locking structure without buffer sealing components, making them susceptible to loosening under blasting impact and prone to liquid oxygen leakage. Furthermore, the operational simulation structure is functionally limited, unable to flexibly adjust the experimental environment pressure, and its parameter monitoring accuracy is insufficient, failing to meet the experimental needs under different operating conditions. The post-experiment residue cleaning structure is cumbersome, requiring the disassembly of multiple components, leading to low experimental efficiency. These shortcomings not only affect the accuracy of experimental data and the safety of the experimental process but also limit the efficient conduct of liquid oxygen blasting experiments, failing to provide reliable experimental data for actual engineering construction. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a liquid oxygen explosion experimental device, which helps to solve the problems of unstable positioning of the explosion core tube, easy loosening and leakage of connection parts, single working condition simulation, insufficient parameter monitoring accuracy, and cumbersome and inefficient post-experiment cleaning in existing liquid oxygen explosion experimental devices.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A liquid oxygen explosion experimental device includes a base, a chamber fixedly connected to the top of the base, a liquid oxygen tank fixedly connected to the top of the chamber, an infusion pipe fixedly connected to the output end of the liquid oxygen tank, a cut-off connector installed inside the chamber, a connecting tail pipe fixedly connected to the end of the cut-off connector away from the infusion pipe, a test tube fixedly connected to the inner wall of the chamber, a fixing component disposed inside the test tube, an explosion core tube installed at the end of the fixing component away from the test tube, a connecting component disposed between the connecting tail pipe and the explosion core tube, a combustible material layer sleeved on the explosion core tube away from the connecting tail pipe, seepage holes uniformly opened inside the combustible material layer, an anti-slip component disposed on the outer wall of the combustible material layer, a fixed top block and a sensor fixedly connected inside the chamber, a cleaning component disposed on the top of the fixed top block, an explosion-proof door installed outside the chamber, a pressurization tank and a controller installed on the top of the chamber, and an ignition wire disposed between the combustible material layer and the controller. The connecting assembly includes a first bolt and a second bolt, which are installed from right to left at the end away from the cut-off joint. The middle of the first bolt and the second bolt are threadedly connected to a first clamp and a second clamp.

[0008] Preferably, the fixing component includes a fixing ring, which is installed inside the test tube. A third bolt is threaded to the middle of the test tube, and multiple springs are uniformly fixed between the fixing ring and the test tube.

[0009] Preferably, the anti-slip component includes an anti-slip sleeve, which is fitted over the outside of the combustible material layer, and an anti-slip pad is fixedly connected to the outer wall of the anti-slip sleeve.

[0010] Preferably, the cleaning component includes a box body, which is slidably connected to the top of the fixed block. A damping shaft is rotatably connected inside the box body, and a flap is fixedly connected to the outer wall of the damping shaft. The flap is rotatably connected to the bottom of the box body.

[0011] Preferably, the connecting tail tube and the rupture core tube are fixedly connected and internally connected by the connecting assembly.

[0012] Preferably, the connecting assembly further includes a buffer pad, which is clamped at the junction of the first clamp, the second clamp, and the connecting tail tube and the bursting core tube.

[0013] Preferably, the chamber is connected to the interior of the pressurized tank, and the controller is electrically connected to the sensor.

[0014] Preferably, the end of the third bolt near the test tube abuts against the side of the fixing ring near the test tube.

[0015] Preferably, the outer wall of the anti-slip pad abuts against the inner wall of the test tube.

[0016] Preferably, the top of the fixed block is provided with a sliding groove, the box body is slidably connected to the middle of the sliding groove, and a handle is fixedly connected to the side of the box body near the explosion-proof door.

[0017] This invention provides a liquid oxygen explosion experimental device. It has the following beneficial effects: 1. This invention utilizes the synergistic effect of a fixing component and an anti-slip component. The fixing component can stably position the blasting core tube, while the anti-slip component further restricts the displacement of the blasting core tube. This helps to prevent the blasting core tube from shifting or rotating during the blasting process, ensuring accurate blasting position and thus improving the accuracy of experimental data. This invention also helps to solve the problem of unstable positioning of the blasting core tube in existing devices.

[0018] 2. The present invention uses the first clamp and the second clamp of the connecting component, together with the first bolt and the second bolt, to lock and fix the connecting tail tube and the blasting core tube. At the same time, the buffer pad fills the gap between the joints, which can not only achieve reliable sealing to prevent liquid oxygen leakage, but also absorb the blasting impact, thus helping to solve the problems of loose connection parts and poor sealing effect in existing devices.

[0019] 3. This invention, through the cooperation of a pressure tank, controller, and sensors, allows the pressure tank to flexibly adjust the internal pressure of the chamber to simulate different working conditions. The sensors collect experimental parameters in real time and transmit them to the controller, realizing diversified simulation of experimental working conditions and accurate monitoring of parameters. This helps to solve the problems of single working condition simulation and incomplete data monitoring in existing devices.

[0020] 4. This invention collects blasting residue by cleaning the box of the component. The box can be quickly pulled out with the help of handles and slides. The damping shaft controls the opening of the flap to achieve rapid cleaning of residue, which simplifies the post-experiment cleaning process and helps to solve the problems of cumbersome and inefficient post-experiment cleaning of existing devices. Attached Figure Description

[0021] Figure 1 This is a front-view perspective view of the present invention; Figure 2 This is a rear-view perspective view of the present invention; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 This is a schematic diagram of the connection component of the present invention; Figure 5 This is a schematic diagram of the fixing component of the present invention; Figure 6 This is a partially enlarged schematic diagram of the connection component of the present invention; Figure 7 This is a schematic diagram of the anti-slip component of the present invention; Figure 8 This is a schematic diagram of the cleaning component of the present invention.

[0022] The components include: 1. Base; 2. Chamber; 3. Liquid oxygen tank; 4. Infusion tube; 5. Cut-off connector; 6. Connecting assembly; 61. First bolt; 62. Second bolt; 63. First clamp; 64. Second clamp; 65. Buffer pad; 7. Fixing assembly; 71. Fixing ring; 72. Third bolt; 73. Spring; 8. Anti-slip assembly; 81. Anti-slip sleeve; 82. Anti-slip mat; 9. Cleaning assembly; 91. Box body; 92. Handle; 93. Flip plate; 94. Damping shaft; 95. Slide groove; 10. Pressurization tank; 11. Controller; 12. Explosion-proof door; 13. Fixed top block; 14. Connecting tailpipe; 15. Explosive core tube; 16. Combustible material layer; 17. Leakage hole; 18. Test tube; 19. Ignition wire; 20. Sensor. Detailed Implementation

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see the appendix Figure 1 - Appendix Figure 6This invention provides a liquid oxygen explosion experimental device, including a base 1, a chamber 2 fixedly connected to the top of the base 1, a liquid oxygen tank 3 fixedly connected to the top of the chamber 2, an infusion pipe 4 fixedly connected to the output end of the liquid oxygen tank 3, a cut-off connector 5 installed inside the chamber 2, a connecting tail pipe 14 fixedly connected to the end of the cut-off connector 5 away from the infusion pipe 4, a test tube 18 fixedly connected to the inner wall of the chamber 2, a fixing component 7 disposed inside the test tube 18, an explosion core tube 15 installed at the end of the fixing component 7 away from the test tube 18, a connecting component 6 disposed between the connecting tail pipe 14 and the explosion core tube 15, a combustible material layer 16 sleeved on the explosion core tube 15 away from the connecting tail pipe 14, seepage holes 17 evenly distributed inside the combustible material layer 16, an anti-slip component 8 disposed on the outer wall of the combustible material layer 16, and a fixed top block 13 and a sensor 20 fixedly connected inside the chamber 2. The top of the fixed block 13 is equipped with a cleaning component 9. The exterior of the chamber 2 is equipped with an explosion-proof door 12. The top of the chamber 2 is equipped with a pressure tank 10 and a controller 11. An ignition wire 19 is provided between the combustible material layer 16 and the controller 11. The connecting component 6 includes a first bolt 61 and a second bolt 62. The first bolt 61 and the second bolt 62 are installed from right to left at the end away from the cut-off joint 5. The middle of the first bolt 61 and the second bolt 62 are connected by a first clamp 63 and a second clamp 64. The connecting tail pipe 14 and the rupture core pipe 15 are fixedly connected by the connecting component 6 and are internally connected. The connecting component 6 also includes a buffer pad 65. The buffer pad 65 is clamped at the joint of the first clamp 63, the second clamp 64 and the connecting tail pipe 14 and the rupture core pipe 15. The chamber 2 is internally connected to the pressure tank 10. The controller 11 is electrically connected to the sensor 20.

[0025] Specifically, before the experiment, the connecting tail pipe 14 and the blasting core pipe 15 need to be aligned and joined. A buffer pad 65 is placed at the joint, and the first clamp 63 and the second clamp 64 are respectively fitted onto both sides of the joint. By tightening the first bolt 61 and the second bolt 62, the first clamp 63 and the second clamp 64 lock and fix the connecting tail pipe 14 and the blasting core pipe 15. The buffer pad 65 fills the joint gap, achieving a seal at the joint and preventing leakage during liquid oxygen transport. Simultaneously, during the blasting process, the buffer pad 65 can absorb instantaneous impact stress, helping to prevent the connection from loosening or being damaged due to impact, ensuring connection stability, and thus improving experimental safety. This helps solve the connection problems of existing devices. The problem of loosening and poor sealing is addressed. During the experiment, liquid oxygen in liquid oxygen tank 3 is delivered to cut-off connector 5 via inlet pipe 4. Cut-off connector 5 controls the opening and closing of the liquid oxygen passage. Liquid oxygen flows into the blasting core tube 15 through connecting tail pipe 14, providing a medium for blasting. Pressurization tank 10 introduces pressurization medium into the chamber 2 to adjust the internal pressure of the chamber 2, simulating the blasting environment under different field conditions. Sensor 20 collects the pressure and temperature parameters inside the chamber 2 in real time and transmits the collected parameter signals to controller 11. Controller 11 monitors and stores the parameters in real time, realizing diversified simulation of experimental conditions and parameter monitoring, which helps to solve the problems of single operating condition simulation and incomplete data monitoring in existing devices.

[0026] Please see the appendix Figure 4 - Appendix Figure 7 The fixing component 7 includes a fixing ring 71, which is installed inside the test tube 18. A third bolt 72 is threadedly connected to the middle of the test tube 18. Multiple springs 73 are evenly fixed between the fixing ring 71 and the test tube 18. The end of the third bolt 72 near the test tube 18 abuts against the side of the fixing ring 71 near the test tube 18.

[0027] Specifically, during the experimental preparation stage, the blasting core tube 15 is placed inside the test tube 18, and the third bolt 72 is tightened. The third bolt 72 pushes the fixing ring 71 to move towards the blasting core tube 15. The spring 73 is compressed and generates an elastic reaction force, which, together with the fixing ring 71, forms a radial clamping and positioning of the blasting core tube 15, thus achieving stable fixation of the blasting core tube 15. This helps to prevent the blasting core tube 15 from shifting during the blasting process, providing a guarantee for the accurate conduct of subsequent blasting experiments. Combined with the function of the anti-slip component 8, the positioning stability of the blasting core tube 15 is further improved, which helps to solve the problem of unstable positioning of the blasting core tube 15 in the existing device.

[0028] Please see the appendix Figure 7 The anti-slip component 8 includes an anti-slip sleeve 81, which is fitted on the outside of the combustible material layer 16. An anti-slip pad 82 is fixedly connected to the outer wall of the anti-slip sleeve 81, and the outer wall of the anti-slip pad 82 abuts against the inner wall of the test tube 18.

[0029] Specifically, before the blasting core tube 15 is inserted into the test tube 18, the anti-slip sleeve 81 is placed on the outside of the combustible material layer 16, so that the anti-slip pad 82 is in close contact with the inner wall of the test tube 18, increasing the friction between the anti-slip sleeve 81 and the test tube 18, further restricting the circumferential rotation and axial movement of the blasting core tube 15 in the test tube 18. Combined with the positioning function of the fixing component 7, it ensures that the blasting core tube 15 is accurately positioned during the blasting process, which helps to avoid experimental data deviation caused by the displacement of the blasting core tube 15, improves the accuracy of experimental data, and further helps to solve the problem of unstable positioning of the blasting core tube 15 in the existing device.

[0030] Please see the appendix Figure 3 and attached Figure 8 The cleaning component 9 includes a box body 91, which is slidably connected to the top of the fixed block 13. A damping shaft 94 is rotatably connected inside the box body 91. A flap 93 is fixedly connected to the outer wall of the damping shaft 94. The flap 93 is rotatably connected to the bottom of the box body 91. A groove 95 is provided on the top of the fixed block 13. The box body 91 is slidably connected to the middle of the groove 95. A handle 92 is fixedly connected to the side of the box body 91 near the explosion-proof door 12.

[0031] Specifically, during the blasting experiment, the generated residue and debris fall into the box 91 under the action of gravity, achieving centralized collection of the residue. After the experiment, the operator opens the explosion-proof door 12, holds the handle 92, and pulls out the box 91 along the slide 95 on the top of the fixed block 13. Under the action of gravity of the experimental waste, the flap 93 rotates around the damping axis 94 and remains open and closed, which can quickly guide the residue inside the box 91 into the transfer tool. After cleaning, the action of gravity disappears, causing the flap 93 to automatically close and reset to the initial state. Then, the box 91 is pushed back to its original position along the slide 95, and the next set of experiments can be prepared. This simplifies the post-experiment cleaning process, improves experimental efficiency, and helps to solve the problem of cumbersome and inefficient post-experiment cleaning of existing devices.

[0032] Working principle: During the experimental preparation stage, the operator opens the explosion-proof door 12, places the blasting core tube 15 into the test tube 18, and positions and fixes the blasting core tube 15 by the third bolt 72, the fixing ring 71 and the spring 73; the anti-slip sleeve 81 and the anti-slip pad 82 further restrict the displacement of the blasting core tube 15 to ensure its stable position.

[0033] Subsequently, the connecting tail tube 14 and the rupture core tube 15 are locked together by the first bolt 61, the second bolt 62, the first clamp 63, and the second clamp 64 of the connecting component 6. The buffer pad 65 achieves sealing and impact buffering at the docking point, thus completing the assembly of the device.

[0034] During the liquid oxygen delivery and environmental simulation phase, the controller 11 is activated. The cryogenic liquid oxygen in the liquid oxygen tank 3 flows into the blast core tube 15 through the delivery pipe 4, the cut-off connector 5, and the connecting tail pipe 14, and then seeps out through the seepage hole 17, fully wetting the combustible material layer 16 to provide a combustion-supporting medium for ignition and detonation. At the same time, the pressurization tank 10 adjusts the internal pressure of the chamber 2 to simulate different working conditions; the sensor 20 collects the pressure and temperature parameters inside the chamber 2 in real time and transmits them to the controller 11 for monitoring.

[0035] During the ignition and detonation phase, once the combustible layer 16 is fully impregnated with liquid oxygen, the controller 11 ignites the combustible layer 16 via the ignition wire 19. The combustible material burns violently and expands rapidly under the assisted combustion of liquid oxygen, generating a high-pressure shock wave to complete the simulated explosion. The buffer pad 65 absorbs the instantaneous impact of the detonation, while the fixing component 7 and the anti-slip component 8 maintain the stability of the detonation core tube 15, ensuring experimental safety and data accuracy.

[0036] During the final stage of the experiment and cleanup, after the blasting is completed, the liquid oxygen supply is shut off by disconnecting connector 5, and the liquid oxygen tank 3 and pressurized tank 10 cease operation, restoring the internal pressure of chamber 2 to normal atmospheric pressure. Sensor 20 continuously collects parameters from the final stage and transmits them to controller 11 for storage, providing support for experimental analysis. The blasting debris falls into chamber 91. The operator opens the explosion-proof door 12, pulls out chamber 91 using handle 92 and slide 95, and uses damping shaft 94 to flip flap 93 to clean up the debris. After cleaning, chamber 91 is reset, ready for the next experiment.

Claims

1. A liquid oxygen explosion experiment device comprising a base (1), characterized in that, A chamber (2) is fixedly connected to the top of the base (1), and a liquid oxygen tank (3) is fixedly connected to the top of the chamber (2). An infusion pipe (4) is fixedly connected to the output end of the liquid oxygen tank (3). A cut-off connector (5) is installed inside the chamber (2). A connecting tail pipe (14) is fixedly connected to the end of the cut-off connector (5) away from the infusion pipe (4). A test tube (18) is fixedly connected to the inner wall of the chamber (2). A fixing component (7) is provided inside the test tube (18). A bursting core tube (15) is installed at the end of the fixing component (7) away from the test tube (18). A connecting tail pipe (14) and the bursting core tube (15) are connected. The connecting component (6) is provided with a combustible material layer (16) on the outer side of the explosive core tube (15) away from the connecting tail tube (14). The combustible material layer (16) is provided with uniformly distributed seepage holes (17). The outer wall of the combustible material layer (16) is provided with an anti-slip component (8). The inside of the chamber (2) is fixedly connected with a top block (13) and a sensor (20). The top of the top block (13) is provided with a cleaning component (9). The outside of the chamber (2) is equipped with an explosion-proof door (12). The top of the chamber (2) is equipped with a pressure tank (10) and a controller (11). An ignition wire (19) is provided between the combustible material layer (16) and the controller (11). The connecting assembly (6) includes a first bolt (61) and a second bolt (62). The first bolt (61) and the second bolt (62) are installed from right to left at the end away from the cut-off joint (5). The middle of the first bolt (61) and the second bolt (62) are threadedly connected to a first clamp (63) and a second clamp (64).

2. The liquid oxygen blasting experiment device according to claim 1, characterized in that, The fixing component (7) includes a fixing ring (71), which is installed inside the test tube (18). A third bolt (72) is threadedly connected to the middle of the test tube (18). Multiple springs (73) are evenly fixedly connected between the fixing ring (71) and the test tube (18).

3. The liquid oxygen blasting experiment device according to claim 1, characterized in that, The anti-slip component (8) includes an anti-slip sleeve (81), which is fitted on the outside of the combustible layer (16), and an anti-slip pad (82) is fixedly connected to the outer wall of the anti-slip sleeve (81).

4. The liquid oxygen blasting experiment device according to claim 1, wherein, The cleaning component (9) includes a box (91) which is slidably connected to the top of the fixed block (13). A damping shaft (94) is rotatably connected inside the box (91). A flap (93) is fixedly connected to the outer wall of the damping shaft (94). The flap (93) is rotatably connected to the bottom of the box (91).

5. The liquid oxygen explosion experimental apparatus according to claim 1, characterized in that, The connecting tail tube (14) and the bursting core tube (15) are fixedly connected and internally connected by the connecting assembly (6).

6. The liquid oxygen explosion experimental apparatus according to claim 1, characterized in that, The connecting assembly (6) also includes a buffer pad (65), which is clamped at the junction of the first clamp (63), the second clamp (64) and the connecting tail pipe (14) and the bursting core pipe (15).

7. The liquid oxygen blasting experiment device according to claim 1, characterized in that, The chamber (2) is connected to the inside of the pressurized tank (10), and the controller (11) is electrically connected to the sensor (20).

8. The liquid oxygen blasting experiment device according to claim 2, characterized in that, The end of the third bolt (72) near the test tube (18) abuts against the side of the fixing ring (71) near the test tube (18).

9. The liquid oxygen blasting experiment device according to claim 3, characterized in that, The outer wall of the anti-slip pad (82) abuts against the inner wall of the test tube (18).

10. The liquid oxygen blasting experiment device according to claim 4, characterized in that, The top of the fixed block (13) is provided with a sliding groove (95), the box body (91) is slidably connected to the middle of the sliding groove (95), and a handle (92) is fixedly connected to the side of the box body (91) near the explosion-proof door (12).

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