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A method for protecting explosion containers with water

An explosion container and explosion test technology, which is applied in the direction of instruments, blasting, scientific instruments, etc., can solve the problems that are not conducive to the maintenance of the shell, and achieve the effects of easy conduction and transmission of shock waves, improving service life and ensuring environmental safety

Active Publication Date: 2021-10-15
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Burying the explosion vessel underground can effectively reduce the risk of explosion accidents, but it is not conducive to the maintenance of the shell

Method used

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  • A method for protecting explosion containers with water
  • A method for protecting explosion containers with water
  • A method for protecting explosion containers with water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The actual explosion vessel of steel Q345A for the vessel is selected, and the vessel is designed as a spherical tank (n=2) with a radius R=1.5m, and the wall thickness δ is taken as 25mm (0.025m). The longitudinal wave sound velocity c of steel is 5123m / s, and the density ρ is 7 850kg / m 3 , Poisson's ratio μ is taken as 0.3; the sound velocity of water c 0 Take 1 480m / s, the density ρ 0 1 000kg / m 3 . Calculate the shell vibration circle frequency ω=5 773s by formula (3) -1 . The relative viscosity coefficient of water damping ζ = 0.5443, meeting the requirement of less than or equal to 0.25. The central explosion of the explosive with Q=5kgTNT equivalent is used for design, and the regular reflection shock wave load on the inner wall of the spherical shell is taken as

[0038] ΔP(t)=6.307×10 6 e -1786t (Pa)

[0039] Substituting the above parameters into formula (2), using the Duhamel integral method to solve the vibration equation of formula (2), it can be ob...

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Abstract

The invention belongs to the technical field of explosion test equipment, and relates to a method for protecting an explosion container with water. During the explosion test, first drain the water in the pool, and after the explosion test is arranged in the explosion container, close and seal the explosion container; after the explosion container, measurement and detonation lines are waterproof and sealed, then pour water into the pool; water is injected to submerge the top of the explosion container After the preset underwater depth, stop the water injection and carry out the explosion experiment. After the explosion experiment, pump out the water in the pool, open the explosion container, and carry out the recovery and inspection of the explosion experiment. The water covering can prevent the splash and shock wave once the container is destroyed by the explosion, which solves the problem of intrinsic safety; when dealing with toxic explosives, it can prevent the direct leakage of toxic gas or aerosol; the water layer can vibrate the shell of the explosive container It plays the role of damping and vibration elimination, so that the number of fatigue vibrations is rapidly reduced, the service life of the explosion vessel is improved, the "strain growth" of the shell is eliminated, and the anti-knock ability of the explosion vessel is improved.

Description

technical field [0001] The invention belongs to the technical field of explosion test equipment, and in particular relates to a method for protecting an explosion container with water. Background technique [0002] Explosive containers or anti-explosive containers have been widely used in explosive scientific experiments, explosive protection, transfer and treatment of toxic explosives, various explosive processing in them, and so on. For specific purposes, people have invented and designed a large number of explosive vessels, and also used various materials and anti-explosion techniques to manufacture explosive vessels. The current explosion vessels include various spherical vessels (DONG Q., HU B.Y., Chen S.Y., etc. Engineering design of a multiple-use spherical explosion containment vessel subjected to internal blast loading from 25kgTNT high explosive[J].J.Pressure Vessel Technology, 2012, 134:021205-1~5.), various tanks (Esparza E.D., Stacy H., Wackerle J. Proof testin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F42D5/045G01N33/22
CPCF42D5/045G01N33/227
Inventor 李晓杰王小红闫鸿浩王宇新周德政刘振峰程赛伟
Owner DALIAN UNIV OF TECH
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