Air-returning-pipe sampling device used for fire-disaster detection and alarm

Abstract

The invention provides a sampling device used for comprehensively and accurately performing fire-disaster detection and sampling in an air returning pipe. In the sampling device, a first detector is provided with an entrance used for collecting a to-be-detected gas and an exit used for exhausting the detected gas. The entrance of the first detector is connected with a sampling pipe which extends deep into the air returning pipe. A part of the sampling pipe, in the air returning pipe, is provided with a sampling hole. The exit of the first detector is connected with a gas exhaust pipe. The exhaust pipe also extends deep into the air returning pipe at the same time. Positions of a main sampling pipe of the sampling pipe, passing an air returning grid, are connected with sampling-pipe adaptors. The sampling-pipe adaptors are connected with branch sampling pipes. The branch sampling pipes extend deep into the air returning grid. Parts of the branch sampling pipes, extending deep into the air returning grid, are provided with sampling holes. And furthermore, sealing rings are installed on parts of the sampling pipe and the exhaust pipe, extending deep into the air returning pipe.

Description

technical field [0001] The invention relates to the field of fire fighting, in particular to a fire detection system. Background technique [0002] The current fire detection and alarm collection pipelines are generally sampled separately for each room. The fire protection of some computer rooms is very important. In order to detect the fire as soon as possible, people have adopted many methods; Although this method can play a certain role, it is wasteful and costly; fire sampling for return air ducts in some fire prevention places is rarely involved; however, when the gas state in the return air duct changes, it can It reflected the fire for a while. Contents of the invention [0003] The present invention aims at the deficiencies in the above-mentioned prior art, and provides a sampling device capable of comprehensively and accurately performing fire detection and sampling inside the return air duct. [0004] The technical solution adopted by the present invention to s...

AI Technical Summary

Problems solved by technology

[0002] The current fire detection and alarm collection pipelines are generally sampled separately for each room. The fire protection of some computer rooms is very important. In order to detect the fire as soon as possible, people have adopted many methods; Although this method can play a certain role, it is wasteful and costly; fire sampling for return air ducts in some fire prevention places is rarely involved; however, when the gas state in the return air duct changes, it can a moment of fire

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