Explosion residue collecting device for simulated explosion experiment
By designing a simulated explosion experimental device for cast iron shell and explosion-proof glass lining, active and passive collection methods are adopted to solve the problems of small and medium-sized collection and environmental pollution in the existing technology, efficient collection of large amounts of residues and simulation of actual explosion effects are achieved, which is convenient for analysis.
Patent Information
- Application Number
- CN202421893479.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-07
AI Technical Summary
The existing experimental equipment for simulated explosions can only collect small amounts of inorganic explosives, and there are representative problems with the passive collection method, making it difficult to simulate the actual explosion effect, and environmental pollution is serious.
A simulated explosion experimental device including a cast iron shell and explosion-proof glass lining is designed, and the explosives are suspended into the experimental chamber through detonation wires. The residue is actively collected using the explosion-proof glass lining, and passively collected through observation and pressure relief channels to reduce environmental pollution.
It realizes efficient collection of large amounts of explosive residues, simulates the actual explosion effect, facilitates analysis, reduces environmental pollution, and avoids matrix interference.
Smart Images
Figure CN223091880U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of simulated explosion experiments, and particularly relates to a device for collecting explosion residues in simulated explosion experiments. Background Art
[0002] The analysis of the characteristics and sources of explosion residues is an important technical means for the qualitative determination and detection of explosion-related cases. Conducting relevant scientific research is the actual combat requirement for quickly detecting and solving such explosion-related cases, and it can help forensic science workers explore the potential value of physical evidence.
[0003] Currently, conducting on-site explosion experiments on suspicious explosives is a commonly used research method. However, on-site explosion experiments are restricted by the site and safety evaluation, and it is difficult to carry out. At the same time, a large amount of dust is generated during on-site explosions, which has a great impact on the environment and many interfering matrices, and is not conducive to theoretical research and analysis. As Figure 1 shown, some scholars have designed a simulated explosion experiment device, which includes a cylindrical steel reaction kettle 11 that can be connected to a pressure sensor. A steel exhaust plate 13 is arranged at the top of the inner cavity of the steel reaction kettle 10 through a steel support ring 12. The steel support ring 12 is fixedly connected to the steel reaction kettle 11 through a fixing bolt 16. A pressure relief hole is opened at the center of the steel exhaust plate 13, and a safety explosion-proof plate 14 and a blasting foil 15 are arranged inside the pressure relief hole, and passive sampling is carried out on the collection plate. However, this design can only use inorganic explosives not exceeding 5 g, which is very different from the amount of explosives used in actual explosions, and there are problems with the representativeness of the particles extracted by the passive collection method. Content of the Utility Model
[0004] The technical problem to be solved by the utility model is to provide a device for collecting explosion residues in simulated explosion experiments in view of the deficiencies of the prior art, which can collect the residues generated by explosions in the largest amount by using both active and passive methods, can better simulate the actual explosion effect, is convenient for the inspection and analysis of explosion residues, has less environmental pollution, and can avoid matrix interference.
[0005] To solve the above technical problems, the content of the utility model includes:
[0006] An explosion residue collection device for simulating explosion experiments, including a barrel-shaped cast iron housing that is cylindrical both inside and outside. A circular cast iron cover door is provided at the top of the cast iron housing to close and open the inner cavity of the cast iron housing. In the inner cavity of the cast iron housing, a lower explosion-proof glass lining plate, a middle explosion-proof glass lining plate, and an upper explosion-proof glass lining plate are sequentially placed from bottom to top. The lower explosion-proof glass lining plate, the middle explosion-proof glass lining plate, and the upper explosion-proof glass lining plate are respectively in the shape of a circular plate, a cylindrical tube, and a circular plate, so as to enclose a cylindrical experimental chamber and be used for actively collecting explosion residues. A first through hole is vertically opened at the centers of the cast iron cover door and the upper explosion-proof glass lining plate, and this first through hole is used to suspend explosives into the experimental chamber through detonation wires.
[0007] Further, a pressing plate is fixedly arranged along the radial direction at the top of the cast iron cover door. Each end of the pressing plate is bent downward to form a support arm respectively. The two support arms are respectively located outside the two ends of the cast iron cover door, and a clamping block is fixedly arranged along the circumferential direction of the cast iron housing at the bottom end of each of the two support arms. Two clamping hooks are fixedly arranged correspondingly on the outer wall of the cast iron housing for respectively clamping the two clamping blocks when rotating the cast iron cover door.
[0008] Further, two handles are symmetrically arranged at the top of the cast iron cover door.
[0009] Further, an experimental pipeline is vertically fixedly arranged outside the first through hole of the cast iron cover door.
[0010] Further, an observation channel and a pressure relief channel are symmetrically arranged along the radial direction on the outer side surface of the cast iron housing, which are respectively used for observing the explosion process and passively collecting explosion residues during pressure relief. The cast iron housing and the middle explosion-proof glass lining plate are provided with second through holes along the radial direction at positions corresponding to the observation channel and the pressure relief channel.
[0011] Further, the observation channel and the pressure relief channel are arranged at the middle position in the height direction of the cast iron housing.
[0012] Further, a cover ring with explosion-proof glass installed is arranged at the outer openings of the observation channel and the pressure relief channel.
[0013] Further, the diameter of the lower explosion-proof glass lining plate, the outer diameter of the middle explosion-proof glass lining plate, and the diameter of the upper explosion-proof glass lining plate are all equal to the inner diameter of the cast iron housing.
[0014] Further, a base is fixedly arranged at the bottom of the cast iron housing.
[0015] The beneficial effects of the present utility model are:
[0016] The cast iron housing of the present utility model can withstand the impact of a large amount of explosives. Inside the cavity of the cast iron housing, an experimental chamber with a cylindrical shape both inside and outside, which is built by two circular plate-shaped explosion-proof glass liners and one cylindrical explosion-proof glass liner, is placed closely against its surface. A first through hole is provided at the center of the cover door and the upper explosion-proof glass liner for placing the explosive into the experimental chamber through a detonating wire and suspending it. The explosive is detonated through the wire, and the explosive explodes in mid-air at the center of the experimental chamber. The explosion residues adhere to the three explosion-proof glass liners, completing the active collection of most of the explosion residues. At the same time, a small part of the explosion residues can also be passively collected by using the outer explosion-proof glass liner arranged above the first through hole. The present utility model can collect the residues generated by the explosion in the largest amount by both active and passive methods, can better simulate the actual explosion effect, is convenient for the inspection and analysis of explosion residues, and has little environmental pollution and can avoid matrix interference. Description of the Drawings
[0017] Figure 1 is a schematic structural diagram of an existing simulated explosion experiment device;
[0018] Figure 2 is a schematic structural diagram of the present utility model;
[0019] Figure 3 is a schematic structural diagram of a cast iron cover door
[0020] Figure 4 is a schematic combined structural diagram of three explosion-proof glass liners;
[0021] In the figures: 11, steel reaction kettle; 12, steel support ring; 13, steel exhaust plate; 14, safety explosion-proof plate; 15, bursting foil; 16, fixing bolt; 21, cast iron housing; 22, cast iron cover door; 23, lower explosion-proof glass liner; 24, middle explosion-proof glass liner; 25, upper explosion-proof glass liner; 26, observation channel; 27, handle; 28, pressing plate; 29, catch; 30, clamping block; 31, pressure relief channel; 32, experimental pipeline; 33, base. Detailed Embodiments
[0022] To facilitate the understanding of the present utility model, the following further detailed description of the present utility model is given in conjunction with the drawings and specific embodiments. Those skilled in the art should understand that the described embodiments are only for helping to understand the present utility model and should not be regarded as specific limitations on the present utility model.
[0023] Such as Figures 2-4As shown in the figure, the utility model provides a device for collecting explosion residues in a simulated explosion experiment, which includes a barrel-shaped cast iron shell 21 that is cylindrical both inside and outside. A base 33 is fixedly arranged at the bottom of the cast iron shell 21, and a circular cast iron cover door 22 is arranged at the top of the cast iron shell 21 to close and open the inner cavity of the cast iron shell 21. A lower explosion-proof glass liner 23, a middle explosion-proof glass liner 24, and an upper explosion-proof glass liner 25 are sequentially placed from bottom to top in the inner cavity of the cast iron shell 21. Moreover, the lower explosion-proof glass liner 23, the middle explosion-proof glass liner 24, and the upper explosion-proof glass liner 25 are respectively in the shape of a circular plate, a cylindrical tube, and a circular plate, so as to enclose a cylindrical experimental chamber and be used for actively collecting explosion residues. The diameter of the lower explosion-proof glass liner 23, the outer diameter of the middle explosion-proof glass liner 24, and the diameter of the upper explosion-proof glass liner 25 are all equal to the inner diameter of the cast iron shell 21. First through holes are vertically opened at the centers of both the cast iron cover door 22 and the upper explosion-proof glass liner 25. An experimental pipeline 32 is vertically fixed outside the first through hole of the cast iron cover door 22, and the experimental pipeline 32 and the first through hole are used to suspend the explosive into the experimental chamber through a detonation wire.
[0024] A pressing plate 28 is fixedly arranged along the radial direction at the top of the cast iron cover door 22. Each end of the pressing plate 28 is bent downward to form a support arm respectively. The two support arms are respectively located outside the two ends of the cast iron cover door 22, and a clamping block 30 is fixedly arranged at the bottom end of each of the two support arms along the circumferential direction of the cast iron shell 21. Two handles 27 are symmetrically arranged at the top of the cast iron cover door 22 to facilitate the taking, placing, and rotation of the cast iron cover door 22. Two hooks 29 are fixedly arranged on the outer wall of the cast iron shell 21 corresponding to the positions, and are used to respectively clamp the two clamping blocks 30 when rotating the cast iron cover door 22.
[0025] An observation channel 26 and a pressure relief channel 31 are symmetrically arranged along the radial direction on the outer side surface of the cast iron shell 21, and are respectively used for observing the explosion process by high-speed photography and passively collecting explosion residues during pressure relief. The cast iron shell 21 and the middle explosion-proof glass liner 24 are both provided with second through holes along the radial direction at the positions corresponding to the observation channel 26 and the pressure relief channel 31. The observation channel 26 and the pressure relief channel 31 are arranged at the middle position in the height direction of the cast iron shell 21.
[0026] Cover rings with explosion-proof glass are arranged at the outer openings of the observation channel 26 and the pressure relief channel 31, and their specific functions for high-speed photography or pressure relief can be adjusted according to actual needs.
[0027] Both the cast iron shell 21 and the cast iron cover door 22 are made of cast iron plates. In order to ensure experimental safety, cast iron plates with a thickness of 30 mm are used. The outer diameter and height of the cast iron shell 21 are both 500 mm. Such a cast iron shell 21 can withstand a large amount of explosion impact force, making the simulated explosion experiment closer to reality and ensuring the safety of the staff at the same time.
[0028] The inner cavity diameter of the cast iron shell 21 is 440mm and the height is 470mm. The thickness of the three explosion-proof glass liners is 10mm, among which the size of the lower explosion-proof glass liner 23 is consistent with the size of the upper explosion-proof glass liner 25, and the diameter is 440mm. The height of the cylindrical middle explosion-proof glass liner is 450mm, the outer diameter is 440mm, and the inner diameter is 420mm. The three explosion-proof glass liners are built in the inner cavity of the cast iron shell 21 in a detachable manner, and the lower explosion-proof glass liner 23, the middle explosion-proof glass liner 24 and the upper explosion-proof glass liner 25 are put in order. The explosion residues during the experiment adhere to the inner walls of the three explosion-proof glass liners. Three explosion-proof glass liners are replaced for each explosion experiment to avoid cross contamination. The diameter of the first through hole is 20mm, and the diameter of the second through hole is 50mm.
[0029] The height of the experimental pipe 32 is 60mm, the outer diameter is 60mm, and the inner diameter is 20mm. During the experiment, 5g, 15g or 20g of explosives are suspended by wires or leads from the experimental pipe 22 into the experimental chamber in the cast iron shell 21 and placed in the air; an explosion-proof area is set ten meters away from the cast iron shell 21, and the staff detonates the explosives in the cast iron shell 21 in the explosion-proof area. The three explosion-proof glass liners in the inner cavity of the cast iron shell 21 can actively receive most of the explosion residues, and some explosion residues can be passively collected by using the explosion-proof glass liners set above the experimental pipe 32. The utility model can collect explosion residues in both active and passive collection methods, can better simulate the actual explosion effect, and is convenient for the inspection and analysis of explosion residues.
[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An explosion residue collection device for a simulated explosion experiment, characterized in that, It includes a barrel-shaped cast iron housing (21) that is cylindrical both inside and outside. A circular cast iron cover door (22) is provided at the top of the cast iron housing (21) to close and open the inner cavity of the cast iron housing (21). In the inner cavity of the cast iron housing (21), a lower explosion-proof glass lining plate (23), a middle explosion-proof glass lining plate (24), and an upper explosion-proof glass lining plate (25) are successively placed from bottom to top. The lower explosion-proof glass lining plate (23), the middle explosion-proof glass lining plate (24), and the upper explosion-proof glass lining plate (25) are respectively in the shape of a circular plate, a cylindrical tube, and a circular plate, so as to enclose a cylindrical experimental chamber and be used for actively collecting explosion residues. First through holes are vertically opened at the centers of the cast iron cover door (22) and the upper explosion-proof glass lining plate (25), and the first through holes are used to lift explosives into the experimental chamber through detonation wires.
2. The explosion residue collection device for the simulated explosion experiment according to claim 1, wherein A pressing plate (28) is fixedly arranged radially along the top of the cast iron cover door (22). At both ends of the pressing plate (28), each is bent downward to form a support arm. The two support arms are respectively located outside both ends of the cast iron cover door (22), and at the bottom ends of the two support arms, a clamping block (30) is fixedly arranged along the circumferential direction of the cast iron housing (21). Two hooks (29) are fixedly arranged correspondingly on the outer wall of the cast iron housing (21) and are used to respectively clamp the two clamping blocks (30) when the cast iron cover door (22) is rotated.
3. The explosion residue collection device for the simulated explosion experiment according to claim 2, wherein, Two handles (27) are symmetrically arranged at the top of the cast iron cover door (22).
4. The explosion residue collection device for the simulated explosion experiment according to claim 1, characterized in that, An experimental pipeline (32) is vertically fixedly arranged outside the first through hole of the cast iron cover door (22).
5. The explosion residue collection device for the simulated explosion experiment according to claim 1, wherein, An observation channel (26) and a pressure relief channel (31) are symmetrically arranged radially on the outer side surface of the cast iron housing (21), and are respectively used to observe the explosion process and passively collect explosion residues during pressure relief. And the cast iron housing (21) and the middle explosion-proof glass lining plate (24) are provided with second through holes radially at positions corresponding to the observation channel (26) and the pressure relief channel (31).
6. The explosive residue collection device for the simulated explosion experiment according to claim 5, characterized in that, The observation channel (26) and the pressure relief channel (31) are arranged at the middle position in the height direction of the cast iron housing (21).
7. The explosion residue collection device for the simulated explosion experiment according to claim 5, wherein Cover rings with explosion-proof glass are arranged at the outer openings of the observation channel (26) and the pressure relief channel (31).
8. The explosive residue collection device for the simulated explosion experiment according to claim 1, wherein, The diameter of the lower explosion-proof glass lining plate (23), the outer diameter of the middle explosion-proof glass lining plate (24), and the diameter of the upper explosion-proof glass lining plate (25) are all equal to the inner cavity diameter of the cast iron housing (21).
9. The explosion residue collection device for simulated explosion experiments according to claim 1, wherein, A base (33) is fixedly arranged at the bottom of the cast iron housing (21).