High-safety pipeline flame damper

Abstract

The invention relates to the field of gas pipeline fire retardance and discloses a high-safety pipeline flame damper. The high-safety pipeline flame damper comprises a first fire retardance shell anda second fire retardance shell which are in flange connection. A fire retardance core disk is fixedly sleeved inside the joint between the first fire retardance shell and the second fire retardance shell. The outer edge of the fire retardance core disk is provided with a plurality of small channels. The middle portion of the fire retardance core disk is movably sleeved with a linkage shaft. One end of the linkage shaft is fixedly connected with a first baffle located on one side of a gas delivery pipeline in the first fire retardance shell. According to the high-safety pipeline flame damper, through the structural design the fire retardance core disk and a limiting gas delivery sleeve movably sleeved in the second fire retardance shell, the whole limiting gas delivery sleeve has tendency to move towards the fire retardance core disk under a normal state; when backfire occurs, flames go into the fire damper from the first fire retardance shell and are divided into a lot of fine flame flow by the small channels of the fire retardance core disk and then are extinguished without affecting continuous delivery of the flames.

Description

technical field [0001] The invention relates to the field of gas pipeline fire arresting equipment, in particular to a pipeline fire arrester with high safety. Background technique [0002] The flame arrester is a device that prevents external flames from entering the equipment and pipelines that contain flammable and explosive gases, or prevents flames from spreading between equipment and pipelines. Tempering will cause fire, explosion and other accidents in the pipeline. The fire prevention principle is as follows: the fireproof core in the flame arrester is composed of many small channels or pores. When the flame enters these small channels, many small flame streams are formed. Due to the channels or The heat transfer area of ​​the pores is large. When the flame passes through the channel wall and performs heat exchange, when the temperature drops to a certain level, the flame is extinguished. [0003] However, in order to improve the fire prevention effect, the diameter...

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Problems solved by technology

[0003] However, in order to improve the fire prevention effect, the diameter of the small channel in the existing pipeline fire extinguisher is very small, which makes, when the gas in the small channel is extinguished, the carbon deposit produced by the insufficiently burned gas accumulates when flashback occurs. In the small channel, it is easy to cause the problem that the subsequent gas cannot pass through, and the fire preventer cannot be used normally, and when the combustion in the pipeline can cause a more harmful detonation shock wave, the huge impact will damage the flame arrester, making the existing Reduced service life of the flame arrester

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