Gas pipeline jet flame effect range prediction method

A range of action, gas pipeline technology, applied in the field of gas pipeline safety prevention and control, can solve the problems of inability to provide accurate reference for safety prevention and control work, large calculation errors, etc., to achieve the effect of enhancing rationality, improving accuracy, and reducing errors

Active Publication Date: 2019-12-31
CHANGZHOU UNIV
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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the object of the present invention is to provide a method for predicting the action range of the gas pipeline jet flame to solve the problem of the lack of research on the jet flame at different leakage angles of pipeline natural gas in the prior art, and the classic prediction model is performing hazard analysis. When generalizing the jet flames at various angles, the calculation error is large, and it is impossible to provide an accurate reference for the safety prevention and control work in complex situations.

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  • Gas pipeline jet flame effect range prediction method

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Embodiment Construction

[0049] The present invention will be further described below in conjunction with the drawings. The following embodiments are only used to explain the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.

[0050] Such as figure 1 Shown is a flowchart of a method for predicting the range of action of a gas pipeline jet flame according to a specific embodiment of the present invention, and the method includes the following steps:

[0051] Step 1: Collect pipeline design parameters and surrounding environment data.

[0052] The pipeline design parameters include the gas pressure P (unit: Pa), the gas temperature T (unit: ℃) in the pipe, and the surrounding environment data includes the atmospheric pressure P outside the pipe. 0 (Unit: Pa), ambient temperature outside the tube T 0 (Unit: °C), ambient wind speed outside the tube u w (Unit: m / s). The above-mentioned pipeline design parameters and surrounding ...

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Abstract

The invention discloses a gas pipeline jet flame effect range prediction method in the technical field of gas pipeline safety prevention and control, and the method aims to solve the technical problemthat in the prior art, due to the lack of research on jet flames of different leakage angles of pipeline natural gas, the classical prediction model generalizes the jet flames of various angles whenthe hazard analysis is carried out, so that the calculation error is large, and the accurate reference cannot be provided for safety prevention and control work under complex conditions. The method comprises the following steps that pipeline design parameters and surrounding environment data are collected; the heat flux corresponding to the preset damage degree is determined; and each angle jet flame effect range corresponding to the preset damage degree is calculated and obtained according to the pipeline design parameters, the surrounding environment data and the heat flux.

Description

Technical field [0001] The invention relates to a method for predicting the action range of a gas pipeline jet flame, which belongs to the technical field of gas pipeline safety prevention and control. Background technique [0002] Oil and natural gas pipeline transportation has become one of my country's five major transportation industries due to its high efficiency and strong continuity. At present, more than 60% of the pipelines in my country with a service life of more than 25 years have entered a period of frequent failures. Natural gas leaked due to pipeline failures can easily cause fire and explosion accidents when encountering a fire source. If effective preventive measures are not taken, it will inevitably cause serious personal injury and property loss. [0003] At present, many experts and scholars have begun to study the hazards of jet flames caused by the leakage of natural gas pipelines, but their research focuses mainly on the occurrence of jet flames in natural g...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D5/02F17D5/00G06F17/50
CPCF17D5/005F17D5/02
Inventor 杨文斌郝永梅蒋军成邢志祥毛小虎杜璋昊杨克朱一龙吴洁严欣明岳云飞
Owner CHANGZHOU UNIV
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