A method for solving the problem of interference from blast smoke during explosion light testing and photography.

Abstract

This invention discloses a method for solving the problem of smoke interference during photography in blasting light testing. Specifically, it is a method for solving the problem of smoke interference during blasting caustic lines, moving light projectiles, and DIC experiments. The device includes a smoke-controlling explosive TATP, a clamp with three functions: blocking, smoke control, and smoke guiding, a smoke-blocking and smoke-venting pipe, an elastic loading block, a freely height-adjustable frame, and bolt posts. The smoke-controlling explosive TATP is loaded into the borehole. A sealing ring is placed on the grooved side of the clamp. A certain width of the outer sealing ring is cut off, and a guide groove of the same width is opened above the clamp, which then contacts the surface of the specimen. The center of the clamp is on the same horizontal line as the center of the borehole. A smoke-blocking and smoke-venting pipe with a diameter slightly larger than the clamp's diameter is placed outside the clamp, with a rubber pad attached to the side that contacts the specimen. A smoke-venting slit of a certain width is opened on the side wall, and the guide groove is aligned with the smoke-venting slit to form a smoke guiding channel. An elastic loading block with a central opening abuts one side against the end face of the smoke-blocking and smoke-venting pipe without the rubber pad, and the other side is penetrated by a bolt post on the frame, abutting against the frame. Finally, the bolt post passes through the elastic loading block, the clamp, and the smoke-blocking and smoke-venting pipe. Adjusting the bolt post makes the clamp fit tightly against the specimen, and the elastic loading block abuts against the smoke-blocking and smoke-venting pipe, fitting the surface of the specimen. The method of this invention can effectively control smoke from firing, improve experimental shooting, and enhance experimental accuracy.

Description

Technical fields:

[0001] This invention relates to experimental fields such as explosive caustic lines, moving light projectiles, and DIC testing technology, specifically a method for solving the problem of blast smoke during explosive caustic lines, moving light projectiles, and DIC experiments. Background technology:

[0002] With the development of optical mechanics, dynamic caustics, kinetic photobulbs, and DIC testing technologies have been successively applied to the study of blasting mechanisms. In blasting experiments, the diffusion of fumes produced by explosive explosions can affect the data capture of ultra-high-speed cameras, reducing the accuracy and information content of experimental results. Therefore, this invention proposes a novel method to solve the problem of fumes during experiments involving explosive caustics, kinetic photobulbs, and DIC. Summary of the Invention:

[0003] The purpose of this invention is to address the shortcomings of existing experiments and provide a method for controlling the generation and spread of smoke from gunfire, thereby improving the clarity of the shooting field of view.

[0004] The objective of this invention can be achieved by adopting the following technical solution:

[0005] A method for resolving the interference of blast smoke during explosion light testing and photography includes the following steps:

[0006] Step 1: Fill the test specimen borehole (1) with explosives that have a smoke control effect.

[0007] Step 2: Fix the frame (2) with the function of adjusting the height of the borehole clamp.

[0008] Step 3: Prepare a clamp with three functions: blocking, smoke control and smoke guidance (3).

[0009] Step 4: Prepare two rubber sealing rings (4) with different diameters and a cloth tape (5).

[0010] Step 5: Insert the smaller diameter rubber sealing ring (4) into the inner ring groove (6) of the clamp, and insert the larger diameter rubber sealing ring (4) into the outer ring groove (7) of the clamp. Then wrap the clamp (3) and the sealing ring (4) together with the cloth tape (5).

[0011] Step 6: Fix the clamp (3) on the frame (2) and use the clamp (3) to clamp the blast hole (1).

[0012] Step 7: Prepare a smoke-blocking and smoke-venting pipe (8) with dual functions of smoke blocking and smoke venting.

[0013] Step 8: Fix the elastic loading block (9) and the smoke blocking-venting pipe (8) around the outside of the clamp.

[0014] Preferably, the smoke-controlling explosive in step 1 is a TATP explosive.

[0015] Preferably, the frame (2) with adjustable borehole clamp height in step 2 is made by drilling a vertical row of screw holes (10) at different heights on the supports on both sides of the frame (2), and the screw holes (10) at the same height on both sides of the supports should be horizontally aligned.

[0016] Preferably, the clamp (3) with the three functions of blocking, controlling smoke and guiding smoke in step 3 is a circular steel column with a screw post (11). The thread of the screw post (11) must match the thread of the screw hole (10) on both sides of the frame. Two grooves (6, 7) with different diameters are opened on one side surface of the clamp steel column, and the outermost groove has a guide groove (12) of a certain width.

[0017] Preferably, in step 4, the diameters of the two rubber sealing rings (4) with different diameters match the diameters of the two grooves (6, 7) on the clamp (3). A section of the larger diameter rubber sealing ring (4) is cut off to form a guide slit (13) with the same width as the guide groove (12) on the clamp (4).

[0018] Preferably, in step 5, when the rubber sealing ring (4) with a larger diameter is embedded in the outer ring groove (6) of the clamp, the guide slot (13) of the rubber sealing ring (4) should be aligned with the guide groove (12) of the outer ring groove (6) of the clamp to form a smoke guide channel.

[0019] Preferably, in step 6, the fixing clamp (3) is fixed by the screw post (11) of the clamp (3) and the screw hole (10) on the frame (2), and the height of the clamp (3) is adjusted according to the different horizontal heights of a vertical row of screw holes (10).

[0020] Preferably, in step 6, the clamping of the borehole (1) using the clamp (3) is achieved by adjusting the screw post (11) so that the clamps on both sides of the specimen clamp the borehole.

[0021] Preferably, the smoke-blocking and smoke-venting pipe (8) in step 7 is a PVC pipe with a diameter slightly larger than that of the clamp (3), and a rubber pad (14) is attached to one side of the PVC pipe to prevent the diffusion of blasting smoke. The smoke-blocking and smoke-venting pipe (8) has a smoke venting slit (15) of a certain width on its side wall to guide the blasting smoke in a directional manner.

[0022] Preferably, the elastic loading block (9) in step 8 is a rubber block with good elasticity, which facilitates the installation of the smoke blocking and venting pipe (8) and the elastic compression of the pipe opening on the side with the rubber pad (14) around the test specimen borehole (1), ensuring a seal while preventing stress concentration.

[0023] Beneficial technical effects of the present invention:

[0024] 1. Existing optical blasting tests typically use DDNP or lead azide as explosives. These two types of explosives produce a lot of smoke after detonation, severely affecting the field of view for filming. The smoke-controlling explosive in this patent is TATP explosive. Preliminary tests have shown that TATP explosive produces very little smoke after detonation, controlling the generation of smoke at the source and contributing to clear filming.

[0025] 2. By adjusting the screws of the clamps, the clamps on both sides of the specimen can be tightly gripped. The clamps also feature two concentric grooves and a guide channel. The inner groove, with a rubber ring embedded within it, effectively blocks the borehole and prevents the spread of blasting fumes. The outer groove, also with a rubber ring embedded within it, provides a second layer of protection against blasting fumes. Furthermore, the outer groove and rubber ring are equipped with guide channels and slits to direct the blasting fumes towards the directional notch.

[0026] 3. The smoke-blocking and smoke-venting pipe is tightly connected to the specimen via rubber gaskets, serving as a third layer to prevent the spread of blasting fumes. Simultaneously, the smoke-blocking and smoke-venting pipe is equipped with smoke-venting slots, the direction of which is consistent with the direction of the guide groove and guide slots, further guiding the directional spread of blasting fumes. Attached image description:

[0027] Figure 1 This is a specimen image illustrating a method for addressing the interference of blasting fumes during explosion light testing.

[0028] Figure 2 This is a method for solving the interference of blast smoke in the photography of explosion light test, including the three-view drawing of the fixture and its loading diagram;

[0029] Figure 3 This is a diagram of a smoke-blocking and smoke-venting pipe used in a method to solve the interference of blasting smoke in the photographing of blasting light test;

[0030] Figure 4 This diagram shows a smoke-blocking and smoke-venting pipe, elastic loading block, and fixture assembly device used in a method to solve the interference of blasting smoke in the photographing of blasting light test.

[0031] Figure 5 This is a method for solving the problem of interference from blast smoke during the photographing of blasting light test, including the clamps and smoke-blocking / venting pipes blocking the blast hole.

[0032] Figure 6 This is an overall diagram of a device used to solve the problem of interference from blast smoke during the shooting of explosion light test.

[0033] In the diagram: 1-Blast hole; 2-Frame; 3-Clamp; 4-Sealing rings of different diameters; 5-Insulated tape; 6-Inner groove; 7-Outer groove; 8-Smoke-blocking and smoke-venting pipe; 9-Elastic loading block; 10-Screw hole; 11-Screw post; 12-Guide groove; 13-Guide slot; 14-Rubber pad; 15-Smoke venting slot Detailed implementation method:

[0034] The present invention will be further explained and illustrated below through specific embodiments.

[0035] To make the problem of smoke interference in blasting light testing, which is solved by this invention, clearer, the invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the invention.

[0036] A method for solving the problem of blast smoke during experiments involving blasting caustic lines, moving light bullets, and DIC. This includes a test piece and a blast hole (1), a frame (2) with screw holes (10), a clamp (3) with an inner groove (6) and an outer groove (7), rubber sealing rings (4) of different diameters, adhesive tape (5), a smoke-blocking and smoke-venting pipe (8), an elastic loading block (9), a screw post (11), and a rubber pad (14).

[0037] The specific steps are as follows:

[0038] Step 1: Put 50mg of TATP explosive into the borehole (1) on the specimen, and then fill the borehole (1) with modeling clay as the borehole clay.

[0039] Step 2: Prepare two circular steel column clamps (3) with a diameter of 24mm and a length of 18mm. One side of the steel column has a screw hole (10) with a diameter of 10mm and a depth of 8mm. The other side of the steel column has two grooves (6, 7) with different diameters. A 3mm wide guide groove (12) is opened in the outermost groove (7).

[0040] Step 3: Prepare two sealing rings (4) with outer diameters of 14mm and 20mm and a cross-sectional circle diameter of 2mm. Cut off 3mm of the 20mm sealing ring and install the sealing ring (4) on the fixture (3). Align the cut part of the sealing ring with the guide groove (12) to form a 3mm wide guide groove (13). Finally, wrap the fixture (3) and the sealing ring (4) together with the cloth tape (5).

[0041] Step 4: Prepare two sections of PVC pipe, each 50mm long, 28mm in diameter, and 1mm thick, to serve as smoke-blocking and smoke-venting pipes (8). A rubber pad (14) is attached to one side of the PVC pipe. The rubber pad (14) is 2mm wide and its diameter is equal to that of the PVC pipe. A smoke venting slit (15) with a width of 3mm is opened on one side of the PVC pipe. The direction of the smoke venting slit (15) of the smoke-blocking and smoke-venting pipe (8) is consistent with the direction of the guide groove (12) of the clamp (3), forming a smoke guiding channel.

[0042] Step 5: Cut a rubber column with a diameter of 28mm and a length of 50mm to serve as an elastic loading block (9). Make a through hole with a diameter of 10mm at the center of the rubber column so that the screw column can pass through the rubber column (9). The rubber column (9) can be attached to the frame (2) at one end and to the PVC pipe (9) at the other end.

[0043] Step 6: Prepare a rigid frame (2), and make a screw hole (10) every 10mm on both sides of the support. The screw hole (10) has a diameter of 10mm. Make a vertical row of screw holes (10) on both sides of the support. The screw holes (10) at the same height on both sides of the support should be horizontally aligned. Prepare two screw posts (11) with a length of 150mm and a diameter of 10mm.

[0044] Step 7: Place the specimen borehole (1) at the center of the light source field of view to obtain the best field of view. Adjust the height of the screw hole (10) and screw post (11) on the frame (2) according to the height of the specimen borehole (1). After determining the height, pass the screw post (11) through the rubber post (9) and the clamp (3). The side of the clamp (3) with the groove is tightly attached to the specimen borehole (1). Then, put the PVC pipe (8) on the outside of the clamp. One side of the PVC pipe abuts against the rubber post (9), and the side with the rubber pad (14) abuts against the specimen. Adjust the screw post (11) to make the clamp clamp the borehole (1).

[0045] The advantages of using the above method are that, firstly, less smoke is generated after the TATP explosive detonates; secondly, the frame (2) can freely adjust the height of the screw column (11) according to the specimen to achieve the same height as the borehole; when the clamp (3) clamps the specimen borehole (1), it has a certain blocking effect on the smoke; then the smoke is directed out through the smoke channel formed by the guide groove (12), the guide slot (13) and the smoke venting slot (15); finally, the advantage of using the rubber column (9) is that the PVC pipe (8) can just hold the specimen, and there will be no stress concentration that affects the test results.

Claims

1. A method for solving the interference of blast smoke during explosion light testing and photography, characterized in that, Includes the following steps: Step 1: Fill the test specimen borehole (1) with TATP explosive with smoke control effect; Step 2: Fix the frame (2) with the function of adjusting the height of the blast hole clamp. The frame (2) has a screw hole (10) every 10mm on both sides of the bracket. The diameter of the screw hole (10) is 10mm. A vertical row of screw holes (10) is made on both sides of the bracket. The screw holes (10) at the same height on both sides of the bracket should be horizontally aligned. Step 3: Prepare a clamp (3) with three functions of blocking, smoke control and smoke guiding. The clamp (3) is a circular steel column with a diameter of 24 mm and a length of 18 mm. One side of the steel column has a screw hole with a diameter of 10 mm and a depth of 8 mm. The surface of the steel column on the other side has two grooves with different diameters. The outer diameter of the inner groove (6) is 6 mm larger than the diameter of the blast hole (1), and the groove width is twice the groove depth. The outer diameter of the outer groove (7) is 6 mm larger than the outer diameter of the inner groove (6), and the groove width is twice the groove depth. A 3 mm wide guide groove (12) is opened on the outside of the outer groove (7). Step 4: Prepare two rubber sealing rings (4) and cloth tape (5) with different diameters. The diameters of the two sealing rings (4) are 14mm and 20mm respectively, and the diameter of the cross-section circle is 2mm. Cut off 3mm of the rubber sealing ring (4) with the larger diameter to form a guide slot (13) with the same width as the guide groove (12) on the fixture (3). Step 5: Insert the smaller diameter rubber sealing ring (4) into the inner groove (6) of the clamp (3), and insert the larger diameter rubber sealing ring (4) into the outer groove (7) of the clamp (3). Then wrap the clamp (3) together with the sealing ring (4) with cloth tape (5). When the larger diameter rubber sealing ring (4) is inserted into the outer groove (7) of the clamp (3), the guide slot (13) should be aligned with the guide groove (12) of the outer groove (7) of the clamp (3) to form a smoke guide channel. Step 6: Fix the clamp (3) on the frame (2) and use the clamp (3) to clamp the blast hole (1); the clamp (3) is fixed by the screw post (11) and the screw hole (10) on the frame (2), and the height of the clamp (3) is adjusted according to the different horizontal heights of a vertical row of screw holes (10); adjust the screw post (11) so that the clamps (3) on both sides of the specimen clamp the blast hole (1); Step 7: Prepare a smoke-blocking and smoke-venting pipe (8) with dual functions of smoke blocking and smoke venting. The smoke-blocking and smoke-venting pipe (8) is a PVC pipe with a length of 50mm, a diameter of 28mm, and a thickness of 1mm. A rubber pad (14) is attached to one side of the PVC pipe. The width of the rubber pad (14) is 2mm, and the diameter of the pad is equal to the diameter of the PVC pipe. A smoke venting slit (15) with a width of 3mm is opened on one side of the PVC pipe. Step 8: Fix the smoke-blocking and smoke-venting pipe (8) around the outside of the clamp (3); the elastic loading block (9) is a rubber column with a diameter of 28 mm and a length of 50 mm, with a through hole of 10 mm in the center of the rubber column; one end of the elastic loading block (9) is attached to the frame (2), and the other end is attached to the smoke-blocking and smoke-venting pipe (8); the screw column (11) passes through the elastic loading block (9); the direction of the smoke venting slot (15) of the smoke-blocking and smoke-venting pipe (8) is consistent with the direction of the guide groove (12) of the clamp (3), forming a smoke guiding channel.

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