Inflaming retarding and explosion suppressing device for combustible explosive compressed gas and fluid pipeline

A technology for compressing gas and liquid pipelines, used in pipeline protection, pipeline damage/wear prevention, pipes/pipe joints/pipe fittings, etc. Fire suppression effect

Inactive Publication Date: 2015-03-25
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these explosion suppression devices have many influencing factors, and it is easy to cause untimely response.

Method used

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  • Inflaming retarding and explosion suppressing device for combustible explosive compressed gas and fluid pipeline
  • Inflaming retarding and explosion suppressing device for combustible explosive compressed gas and fluid pipeline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A flame retardant and explosion suppression device for flammable and explosive compressed gas and liquid pipelines, consisting of a spring-shaped coil 2, a shell 1 and a fire retardant 3, the spring-shaped coil 2 is provided with an inlet and an outlet, and the spring-shaped coil 2 is arranged on In the casing 1, the inlet and outlet protrude from the casing 1 and are respectively connected to the delivery pipe through flanges, and the gap between the casing 1 and the spring-like coil 2 is filled with 0.8g / cm3 dry powder fire extinguishing agent. Due to the critical pipe diameter effect and the corner effect, the intensity of the flame and the shock wave entering the spring-shaped coil 2 will rapidly and continuously decay until they disappear, thereby achieving the effect of flame retardancy and explosion suppression. When the device casing 1 is damaged by the impact of the shock wave, the filled dry powder fire extinguishing agent can be thrown out in time to form a fi...

Embodiment 2

[0025] A flame retardant and explosion suppression device for flammable and explosive compressed gas and liquid pipelines, which is composed of a mosquito-repellent coil 2, a casing 1 and a fire retardant 3, the mosquito-repellent coil 2 is provided with an inlet and an outlet, and the mosquito-repellent coil 2 is arranged on In the shell 1, the inlet and the outlet protrude from the shell 1 and are respectively welded with the conveying pipeline, and the space between the shell 1 and the mosquito-repellent coil 2 is filled with an inert gas of 2Mpa. Due to the critical pipe diameter effect and the corner effect, the intensity of the flame and the shock wave entering the mosquito-repellent coil 2 will rapidly and continuously decay until they disappear, thereby achieving the effect of flame retardancy and explosion suppression. When the device casing 1 is damaged by the impact of the shock wave, the filled inert gas can be thrown out in time to form a fire extinguishing environ...

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PUM

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Abstract

The invention discloses an inflaming retarding and explosion suppressing device for a combustible explosive compressed gas and fluid pipeline. The device comprises a coil pipe, a shell and a fire retardant chemical, wherein the coil pipe is provided with an inlet and an outlet and arranged in the shell, the inlet and the outlet extend out of the shell, and the space between the shell and the coil pipe is filled with the fire retardant chemical. The inflaming retarding and explosion suppressing device is applied to the combustible explosive compressed gas and fluid conveying pipeline, when the pipeline is subjected to a combustion explosion, due to the critical pipe diameter and existence of the corner-turning effect, flames and impact waves entering the coil pipe will decay rapidly and continuously until disappearing, and the inflaming retarding and explosion suppressing effects are achieved; when the device or the coil pipe cracks under influence of the explosion, the fire retardant chemical can put out a fire in time.

Description

technical field [0001] The invention relates to the technical field of flame retardant and explosion suppression, in particular to a flame retardant and explosion suppression device for flammable and explosive compressed gas and liquid pipelines. Background technique [0002] At present, the fire arresting devices used on flammable and explosive compressed gas and liquid pipelines mainly include metal mesh type, corrugated type, packing type, and porous plate type. Inner flame spread. The fire arresting device divides the transportation pipeline into multiple parts. When the flame propagates in the pipeline, when the pipe diameter decreases, due to heat conduction and wall effect, the heat loss will gradually increase, and the combustion temperature and flame propagation speed will decrease accordingly. When the pipe diameter is small to a certain limit value, the heat loss of the pipe wall is greater than the reaction heat, so that the flame is extinguished. However, when...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L57/04
CPCF16L57/04
Inventor 解立峰宋庆学匡蕾姚箭孙明义王海洋施祖建
Owner NANJING UNIV OF SCI & TECH
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