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A method for estimating the damage range of natural gas pipeline physical explosion to human body

A natural gas pipeline and physical explosion technology, which is applied in the field of estimation of the range of human injury caused by natural gas pipeline physical explosion, can solve problems that have not yet been seen, and achieve strong adaptability

Active Publication Date: 2020-11-03
PETROCHINA WEST PIPELINE CO +1
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there is no technical solution for estimating the range of human injury caused by natural gas pipeline physical explosion by using the calculation method of natural gas pipeline physical explosion energy and the calculation method of high-pressure gas physical explosion shock wave overpressure attenuation

Method used

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  • A method for estimating the damage range of natural gas pipeline physical explosion to human body
  • A method for estimating the damage range of natural gas pipeline physical explosion to human body
  • A method for estimating the damage range of natural gas pipeline physical explosion to human body

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Experimental program
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Effect test

Embodiment

[0037] Step 1: Collection of relevant data:

[0038] The initial data collected includes: pipe diameter d, wall thickness h, initial gas pressure P in the pipe 1 , Gas adiabatic index γ, atmospheric pressure P 0 、Buried depth H 1 , Covering soil density ρ s , The width of the opening under the pipe laying ditch L 1 , Upper opening width L 2 , Throwing height of covering soil H 2 And other basic data;

[0039] Step 2: The concept of physical explosion energy of high pressure natural gas in the pipe and its estimation:

[0040] a. Put forward the concept of line physical explosion energy of high-pressure natural gas in the pipe

[0041] The high-pressure gas inside the high-pressure gas container has certain potential energy and other types of energy due to its high-strength compression. The sum of these energies is called physical explosion energy, and a physical explosion will occur when the tube body is suddenly released. As for the natural gas pipeline, it can be approximated as a c...

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Abstract

The invention relates to a method for estimating a damage scope of physical explosion of a natural gas pipeline for a human body. The method provides a linear physical explosion energy concept of a high-pressure natural gas in the pipeline, an isentropic expansion principle based linear physical density energy estimation method, a natural gas pipeline physical explosion shock wave attenuation law, a peak value overpressure estimation method, and a grade division method for damage degrees of the physical explosion shock waves of the natural gas pipeline to surrounding personnel. Grade division of the damage degrees of the physical explosion shock waves of the natural gas pipeline to the personnel and the damage scope determined according to the grade division are determined according to parameters which are estimated by the method. The method for estimating the damage scope of the physical explosion of the natural gas pipeline for the human body is safe, reliable, strong in applicability and easy to use, and can realize estimation of the damage scope of the natural gas pipeline physical explosion shock waves to the personnel along the whole pipeline.

Description

Technical field [0001] The invention belongs to the field of pipeline explosion research and testing, and in particular relates to a method for estimating the range of physical explosion of natural gas pipelines to humans. [0002] technical background [0003] As an efficient and clean energy, natural gas is favored by all countries. It is estimated that in the next 10 years, my country's economic development and residents' demand for natural gas will explode physically. As natural gas pipelines are affected by nearby construction activities, environmental corrosion, mechanical or material failure, natural disasters, and other unknown factors, physical explosions and cracking accidents sometimes occur, causing serious injuries to nearby operators or nearby residents. Therefore, it is of important theoretical and guiding significance to study the extent of damage caused by the physical explosion of natural gas pipelines to nearby personnel. Since the initial explosion of the natu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/10
CPCG16Z99/00
Inventor 程良玉马华原龙源毛益明谢萍杨明尚臣林小飞
Owner PETROCHINA WEST PIPELINE CO
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