A Calculation Method of Shock Wave Overpressure in Pipeline Physical Explosion Considering Direction

A technology of physical explosion and calculation method, applied in the direction of design optimization/simulation, electrical digital data processing, special data processing application, etc., can solve the problems of high implementation cost, simple and easy implementation, inferior to theoretical methods, etc., and achieves low professional level requirements , the steps are clear, the parameters are clear
CN113139285BActive Publication Date: 2022-04-05CHINA UNIV OF PETROLEUM (EAST CHINA)
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA UNIV OF PETROLEUM (EAST CHINA)
Publication Date
2022-04-05

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Abstract

The invention discloses a method for calculating the overpressure of the pipeline physical explosion shock wave considering directionality. The method first assumes that the compressed gas of a cylinder with a length of kD and a diameter of D in the pipeline provides the energy for the shock wave formed by the physical explosion, and calculates the pipeline through the formula Physical explosion energy, then calculate the dimensionless distance from the target position to the explosion center, and obtain the ideal dimensionless overpressure corresponding to the target position through the Baker-Tang pressure vessel physical explosion overpressure-distance relationship diagram, and then calculate the actual dimensionless overpressure, Then the actual shock wave overpressure at the target position is obtained. This method provides a quantitative calculation method of explosion shock wave overpressure, and the calculation results are accurate.
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Description

technical field

[0001] Pipelines are widely used in the process industry. Pipeline physical explosion refers to the rapid rupture of the pipeline due to internal overpressure or the decrease in the strength of the pipeline itself. The internal high-pressure gas is violently released from the rupture of the pipeline, and then the external air is compressed to form a shock wave that propagates outward. The main hazards of pipeline physical explosions are shock waves, fragments and thermal radiation, among which shock waves often cause the most serious damage and have the widest range of influence. Therefore, the evaluation of the consequences of pipeline physical explosion is mainly to calculate the size distribution of shock wave overpressure in space. Background technique

[0002] At present, there are two types of calculation methods for pipeline physical explosion overpressure: β‘  theoretical method; β‘‘ numerical simulation method. The theoretical method first calculates th...

Claims

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