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Method for protecting explosion container with water

A technology of explosion container and explosion test, applied in the direction of instruments, blasting, scientific instruments, etc., can solve problems such as being unfavorable for the maintenance of shells, and achieve the effects of improving anti-explosion capability, small compressibility, and easy absorption

Active Publication Date: 2021-01-08
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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  • Method for protecting explosion container with water
  • Method for protecting explosion container with water
  • Method for protecting explosion container 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 experiment equipment, and relates to a method for protecting an explosion container with water. The method comprises the following steps: during an explosion experiment, firstly, pumping out pool water, arranging the explosion experiment in the explosion container, and then closing and sealing the explosion container; after carrying out waterproof sealing on the explosion container and a measuring and detonating line, injecting water into a pool; and after the top of the explosion container is submerged at a preset underwater depth by water injection, stopping water injection, and carrying out the explosion experiment. After the explosion experiment, the water in the pool is pumped out, the explosion container is opened, and recovery and inspection work of the explosion experiment are carried out. Water coverage can prevent flying objects and shock waves once the container is damaged by explosion, so that the intrinsic safety problem is solved; when toxic explosives are treated, toxic gas or aerosol can be prevented from being directly leaked; and a water layer has damping and vibration eliminating effects on vibration of the shell of the explosion container, so that the fatigue vibration frequency is rapidly reduced, the service life of the explosion container is prolonged, strain growth of the shell is eliminated, andthe anti-explosion capability of the explosion container 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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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