Intrinsic-safety explosive disposal and protection device and using method therefor

Patent metadata

Field	Value
Publication number	US-12455152-B2
Application number	US-202418787156-A
Country	US
Kind code	B2
Filing date	Jul 29, 2024
Priority date	Jan 29, 2022
Publication date	Oct 28, 2025
Grant date	Oct 28, 2025

Abstract

An intrinsic-safety explosive disposal and protection device is incapable of causing secondary damage itself during excessive explosion or extreme conditions and capable of realizing efficient absorption for energy from explosion shock waves. The device includes an explosion-proof top cover, a support plate, an explosion-proof material filling layer and an explosion-proof drum; the explosion-proof drum is of a drum body structure having openings in two ends; the explosion-proof top cover is disposed on a top opening of the explosion-proof drum; the support plate is supported inside the explosion-proof drum, a height of the support plate in the explosion-proof drum is adjustable, and an area located below the support plate in the explosion-proof drum is a placing area for the explosive. An explosion-proof material is filled between the support plate in the explosion-proof drum and the explosion-proof top cover to form the filling layer. Use of the device is also provided.

First claim

What is claimed is:

1. An explosive disposal and protection device, comprising an explosion-proof top cover ( 1 ), an explosion-proof material filling layer ( 3 ), an explosion-proof drum ( 4 ) and an energy absorption plate ( 5 ) which are prepared from a flexible composite material;
the explosion-proof drum ( 4 ) being of a drum body structure having openings in two ends; the explosion-proof top cover ( 1 ) being disposed on a top opening of the explosion-proof drum ( 4 ); the energy absorption plate ( 5 ) being disposed at a set height position inside the explosion-proof drum ( 4 ); and
an explosion-proof material being filled between the energy absorption plate ( 5 ) in the explosion-proof drum ( 4 ) and the explosion-proof top cover ( 1 ) to form the explosion-proof material filling layer ( 3 ).

2. The explosive disposal and protection device according to claim 1 , further comprising a support plate ( 2 ); the support plate ( 2 ) being disposed below the energy absorption plate ( 5 ) in the explosion-proof drum ( 4 ), and an area located below the support plate ( 2 ) in the explosion-proof drum ( 4 ) being a placing area for an explosive ( 6 ); and a height of the support plate ( 2 ) in the explosion-proof drum ( 4 ) being adjustable.

3. The explosive disposal and protection device according to claim 2 , wherein two or more annular step surfaces serving as a support guide layer are coaxially spaced and distributed on the inner surface of the explosion-proof drum ( 4 ) for placing the support plate ( 2 ), so that adjustment of a height position of the support plate ( 2 ) in the explosion-proof drum ( 4 ) is achieved.

4. The explosive disposal and protection device according to claim 2 , wherein through holes are distributed in the support plate ( 2 ).

5. The explosive disposal and protection device according to claim 2 , wherein for a movable explosive, the explosive is placed on the support plate ( 2 ) and is transferred after being filled with the explosion-proof material.

6. A method for using an explosive disposal and protection device, wherein the explosive disposal and protection device is the explosive disposal and protection device according to claim 2 , the method comprising:
step 1: determining heights of the explosive ( 6 ) and a camouflage thereof to determine a height of a support plate ( 2 ) in the protection device;
step 2: placing the support plate ( 2 ) at the height position, determined in the above-mentioned step, in an explosion-proof drum ( 4 );
step 3: filling an explosion-proof material above the support plate ( 2 ) until reaching a set height of an energy absorption plate ( 5 );
step 4: placing the energy absorption plate ( 5 );
step 5: filling the explosion-proof material above the energy absorption plate ( 5 ) until reaching a top cover ( 1 );
step 6: covering the top cover ( 1 ); and
step 7: lifting the protection device to cover the explosive ( 6 ).

7. The explosive disposal and protection device according to claim 1 , wherein the energy absorption plate ( 5 ) comprises an energy absorption plate main body ( 5 . 1 ), a top bullet-proof packaging material ( 5 . 2 ) and a high-impedance and high-damping filling material ( 5 . 3 );
an annular groove is provided in a center of a surface of the energy absorption plate main body ( 5 . 1 ), trapezoidal holes are uniformly spaced and distributed in a circumferential direction of a periphery of the groove, and the trapezoidal holes are filled with an open-cell porous foam material;
the groove in the surface of the energy absorption plate main body ( 5 . 1 ) is filled with the high-impedance and high-damping filling material ( 5 . 3 ); and
the top bullet-proof packaging material ( 5 . 2 ) is a packaging material disposed on a top of the groove in the surface of the energy absorption plate main body ( 5 . 1 ) and is used for packaging the high-impedance and high-damping filling material ( 5 . 3 ) therein.

8. The explosive disposal and protection device according to claim 1 , wherein the explosion-proof top cover ( 1 ) comprises a top support layer ( 1 . 1 ), a top explosion-proof liquid layer ( 1 . 2 ) and a top bullet-proof layer ( 1 . 3 );
an annular groove is disposed in an upper surface of the top support layer ( 1 . 1 ), an annular bulge is provided in a middle of the annular groove, and a height of the annular bulge is smaller than a depth of the annular groove;
the top explosion-proof liquid layer ( 1 . 2 ) is of an annular structure with a central through hole, is located in the annular groove in the upper surface of the top support layer ( 1 . 1 ), and sleeves the annular bulge in the annular groove;
the top bullet-proof layer ( 1 . 3 ) is of an annular flat plate structure and is disposed above the top explosion-proof liquid layer ( 1 . 2 ) in the annular groove in the upper surface of the top support layer ( 1 . 1 ); and
trapezoidal through holes are distributed in a position, corresponding to the top explosion-proof liquid layer ( 1 . 2 ), on a lower surface of the top support layer ( 1 . 1 ), and a depth of each of the trapezoidal through holes is consistent with a thickness of the top support layer ( 1 . 1 ) at the corresponding position.

9. The explosive disposal and protection device according to claim 1 , wherein the explosion-proof drum ( 4 ) is of a drum body structure with a variable wall thickness gradually increased from top to bottom; and an inner surface of the explosion-proof drum ( 4 ) is a conical surface with a top wider than a bottom, and an outer surface thereof is a conical surface with a top narrower than a bottom.

10. The explosive disposal and protection device according to claim 9 , wherein the explosion-proof drum ( 4 ) is sequentially provided with an inner support layer ( 4 . 2 ), an explosion-proof liquid layer ( 4 . 3 ), an inner bullet-proof layer ( 4 . 4 ), a laterally-filled energy absorption layer ( 4 . 5 ), an anti-jumping bullet-proof layer ( 4 . 6 ) and a main body support ( 4 . 7 ) from inside to outside;
the inner support layer ( 4 . 2 ) is of an inverted trapezoidal structure, and a lower end thereof extends outwards to form a shaft shoulder; the inner bullet-proof layer ( 4 . 4 ) is of a straight tubular structure coaxially sleeving the inner support layer ( 4 . 2 ), an inner surface of a lower end thereof is in contact linkage with the shaft shoulder at the lower end of the inner support layer ( 4 . 2 ), and an explosion-proof liquid is filled between the inner support layer ( 4 . 2 ) and the inner bullet-proof layer ( 4 . 4 ) to form an explosion-proof liquid layer B ( 4 . 3 ); an explosion-proof liquid layer A ( 4 . 1 ) is disposed on a top of the inner bullet-proof layer ( 4 . 4 ), and the inner bullet-proof layer ( 4 . 4 ) has the same height as the explosion-proof liquid layer A ( 4 . 1 ) and the inner support layer ( 4 . 2 );
the laterally-filled energy absorption layer ( 4 . 5 ) is disposed outside the inner bullet-proof layer ( 4 . 4 ), and a bottom of the laterally-filled energy absorption layer ( 4 . 5 ) is packaged by a bottom barrier layer ( 4 . 8 );
the anti-jumping bullet-proof layer ( 4 . 6 ) is disposed from bottom to top at a set height position outside the laterally-filled energy absorption layer ( 4 . 5 ), and the anti-jumping bullet-proof layer ( 4 . 6 ) is of a tubular structure; and
the main body support ( 4 . 7 ) is disposed on the outermost and is used for packaging and supporting the drum body structure ( 4 ) as a whole.

11. The explosive disposal and protection device according to claim 10 , wherein the laterally-filled energy absorption layer ( 4 . 5 ) absorbs energy by adopting non-metal foam balls.

12. The explosiv

Assignees

• Beijing Institute Tech

Inventors

• Huang Guangyan
• Bian Xiaobing
• Wang Tao
• Zhou Ying

Classifications

• F42B39/24

  Shock-absorbing arrangements in packages {, e.g. for shock waves} · CPC title

• F42B39/14

  Explosion or fire protection arrangements on packages or ammunition (F42B39/20 {and F42B39/24} take precedence; {wall or panel structure of fireproof safes or storage containers E05G1/024}) · CPC title

• F42D5/045 Primary

  Detonation-wave absorbing or damping means · CPC title

• F42D5/04 Primary

  Rendering explosive charges harmless, e.g. destroying ammunition ({F42B39/14 and F42B39/20 take precedence } ; extracting primers, dismantling ammunition F42B33/04, F42B33/06 {; chemical deactivating of explosives C06B21/0091}); Rendering detonation of explosive charges harmless · CPC title