Disastrous consequence predication method of CNG (compressed natural gas) filling station

A technology of compressed natural gas and prediction methods, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of not considering the influence of natural gas concentration distribution, deviation from the actual situation, etc.
CN104573253AActive Publication Date: 2015-04-29SPECIAL EQUIP SAFETY SUPERVISION INSPECTION INST OF JIANGSU PROVINCE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SPECIAL EQUIP SAFETY SUPERVISION INSPECTION INST OF JIANGSU PROVINCE
Publication Date
2015-04-29

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Abstract

The invention relates to a disastrous consequence predication method of a CNG (compressed natural gas) filling station. The method comprises the steps of 1, removing background of an image by the differential method; 2, performing binarization processing for the image by the automatic threshold method; 3, performing median filter to remove various interference noises in the image; 4, calculating region area. According to the method, dangerous region correction factors are utilized, so that the result of the existing natural gas leakage disastrous consequence evaluation mode meets the actual condition; the influence of the barrier distribution and meteorological conditions is taken into account; FLUENT software is utilized to simulate the natural gas leakage dispersion condition, and the dangerous region correction factors are calculated according to the simulation result; the existing vapor cloud explosion quantitative evaluation model and API pub 581 quantitative consequence evaluation model are corrected through the correction factors, and therefore, the evaluation result meets the actual condition.
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Description

technical field

[0001] The invention relates to a method for predicting disaster consequences of a compressed natural gas filling station. Background technique

[0002] Natural gas is a clean, efficient and high-quality energy source, which has been widely used in countries all over the world. However, due to the low explosion limit of the mixture of natural gas and air, it is very easy to catch fire and even explode. In recent years, fire and explosion accidents caused by gas filling stations are not uncommon at home and abroad.

[0003] For the prediction of disaster consequences of compressed natural gas (CNG) filling stations, the existing technologies are: vapor cloud explosion quantitative evaluation model and API pub 581 quantitative consequence evaluation model.

[0004] Its specific principle is:

[0005] (1) Quantitative evaluation model of vapor cloud explosion

[0006] Vapor Cloud Explosion (VCE) is a kind of explosion accident that occurs frequently and has v...

Claims

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