Method for evaluating dynamic risk failure possibility of mobile pressure-bearing equipment

A technology of pressure equipment and dynamic risk, applied in the field of dynamic risk failure possibility evaluation of mobile pressure equipment, can solve the problems of large gaps in failure possibility evaluation and increase of safety accidents, so as to fill the gap of risk evaluation and facilitate engineering. The effect of actual operation

Pending Publication Date: 2021-07-16
NANJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wide application of mobile pressure vessels has also increased its safety accidents. It is imminent to evaluate the failure probability of mobile pressure vessels, especially long-tube trailers. However, the current evaluation of the failure probability of pressure vessels is mainly for fixed pressure vessels. There is still a large gap in the failure probability evaluation of long-tube trailers

Method used

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  • Method for evaluating dynamic risk failure possibility of mobile pressure-bearing equipment
  • Method for evaluating dynamic risk failure possibility of mobile pressure-bearing equipment
  • Method for evaluating dynamic risk failure possibility of mobile pressure-bearing equipment

Examples

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Effect test

Embodiment

[0293] The present invention will be further described below based on the examples.

[0294] There is a long-tube trailer that has been in service for 5 years and has been filled 10,000 times. The manufacturing, installation, and management levels basically meet the requirements. The possibility of failure is evaluated:

[0295] 1. Divide the mobile pressure-bearing equipment (type I long-tube trailer) into units such as cylinder body, fixing device, end plug, pipeline, and safety accessories.

[0296] 2. Calculate the common failure frequency of each unit.

[0297] General failure probability of cylinder body: F G _Cylindle=3.2×10 -4

[0298] Universal failure probability of fixtures: F G _Fixture=3.8×10 -5

[0299] General failure probability of end plug: F G _EndPlug=2.6×10-5

[0300] General failure probability of pipeline: F G _Pipe=2.4×10 -5

[0301] General failure probability of safety accessories: F G _SafeAccess=6.1×10 -5

[0302] 3. Calculate the corre...

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Abstract

The invention provides a method for evaluating the dynamic risk failure possibility of mobile pressure-bearing equipment, and the method comprises the steps: constructing a dynamic risk failure possibility evaluation model of different units of the mobile pressure-bearing equipment (I-type long tube trailer) based on a quantitative and qualitative failure possibility evaluation system of a failure mode; the failure possibility evaluation system comprises the influence of the equipment body state, the equipment service status and the enterprise management level on the failure frequency. The method can evaluate the equipment failure probability. The method comprises the following steps: firstly, obtaining design, installation, operation and maintenance files of the mobile pressure-bearing equipment; carrying out data arrangement on all influence factors, and preprocessing to complete a comprehensive inspection report; dividing the moved pressure-bearing equipment into units, and calculating a failure possibility score; and comprehensively calculating the risk value of each pipe section, dividing risk levels, and analyzing weak links and key factors which influence the overall safety of the equipment.

Description

technical field [0001] The invention relates to the field of reliability evaluation of pressure equipment, in particular to a method for evaluating the possibility of dynamic risk failure of mobile pressure equipment. Background technique [0002] With the rapid development of my country's economy, the demand for energy is increasing day by day. For a long time, my country's energy has been dominated by coal. Although the proportion of coal in energy consumption has declined in recent years, its absolute quantity is still huge and has increased. Sulfur dioxide, nitrogen oxides, and dust released by coal combustion have caused serious environmental pollution. For this reason, my country promotes natural gas resources to alleviate environmental problems, and at the same time vigorously develops clean energy such as hydrogen energy and solar energy. Compared with pipelines, large gas transportation vehicles such as long-tube trailers and tankers are widely used in short-distanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/17G06F30/20G06Q10/06G06F119/02G06F119/04
CPCG06F30/17G06F30/20G06Q10/063114G06Q10/0635G06F2119/02G06F2119/04
Inventor 赵建平邹超
Owner NANJING UNIV OF TECH
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