洪水冲击下法兰连接管道失效水速和长度研究

doi:10.16265/j.cnki.issn1003-3033.2018.02.017

中国安全科学学报 ›› 2018, Vol. 28 ›› Issue (2): 99-103.doi: 10.16265/j.cnki.issn1003-3033.2018.02.017

洪水冲击下法兰连接管道失效水速和长度研究

王慧, 马峻教授, 曹梦凡

首都经济贸易大学安全与环境工程学院,北京 100070

收稿日期:2017-11-15 修回日期:2018-01-10 出版日期:2018-02-28 发布日期:2020-11-17
作者简介:王慧 (1992—),女,新疆乌鲁木齐人,硕士研究生,研究方向为安全管理。E-mail:414515054@qq.com。
基金资助:
科技部国家重点研发计划(2016YFC0801500)。

Study on failure water velocity and length of flanged pipe under impact of flood

WANG Hui, MA Jun, CAO Mengfan

School of Safety and Environmental Engineering,Capital University of Economics and Business,Beijing 100070, China

Received:2017-11-15 Revised:2018-01-10 Online:2018-02-28 Published:2020-11-17

摘要/Abstract

摘要： 为确保管道安全运行,归纳分析洪水作用下管道的破坏类型,基于洪水冲击作用下管道及连接处的受力分析,构建洪水作用下管道法兰连接处螺栓失效判定模型;通过该模型判断洪水冲击作用下管道法兰连接处的螺栓安全状况,计算管道连接处失效时的洪水速度和管道的失效临界长度;以平焊环板式钢制管法兰连接的化工管道为例,分别计算不同外径的管道在洪水冲击作用下失效时的临界水速和临界长度。结果表明:洪水冲击下,随着洪水速度的增加,管道的失效临界长度逐渐缩短;相同水速时,管道外径越大,管道的失效临界长度越长。

关键词: 洪水, 管道, 法兰, 失效, 临界长度

Abstract: To ensure the safe operation of chemical pipelines, the types of damage to pipe under the impact of the flood were summarized. Based on the stress analysis of pipe and junction under flood impact, a model was built for judging the bolt failure of pipe flange connection under flood impact. Through this model, the bolt safety conditions of pipe flange connection under flood impact was judged, and the flood speed and the critical length of pipe failure were calculated when the pipe junction failed. An example of the chemical pipe connected by flange-plate type steel pipe flange was presented in this paper. In this example, the critical water velocity and critical length were calculated for different outer diameter pipes under flood impact. The results show that for a pipe under the impact of the flood, the higher the flood velocity is, the shorter the failure length of the pipe will be, and that at same water velocity, the larger the pipe diameter is, the longer the critical length of pipe failure will be.

Key words: flood, pipe, flange, failure, critical length

中图分类号:

X937

王慧, 马峻, 曹梦凡. 洪水冲击下法兰连接管道失效水速和长度研究[J]. 中国安全科学学报, 2018, 28(2): 99-103.

WANG Hui, MA Jun, CAO Mengfan. Study on failure water velocity and length of flanged pipe under impact of flood[J]. China Safety Science Journal, 2018, 28(2): 99-103.

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洪水冲击下法兰连接管道失效水速和长度研究

Study on failure water velocity and length of flanged pipe under impact of flood

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