A connection structure for plugging cover of gas drainage pipeline type explosion suppressor

Abstract

The invention provides a gas extraction pipeline type explosion suppressor blocking cover connecting structure and discloses connecting device for blocking a pipeline type explosion suppressor mountedin a gas conveying pipe in the gas discharging and extraction processes, a cover board can be prevented from being corroded and falling off through a fixed limiter which is clamped with and matched with the rear end of the explosion suppressor in a treaded connection mode, the structure is simple, and convenience and practicability are achieved. The gas extraction pipeline type explosion suppressor blocking cover connecting structure is characterized in that a circle of inner countersunk groove is ofmred in the end face of a cover board; a plurality of dismounting grooves are distributed in the inner countersunk groove peripherally and extend in the radius direction; the cover board is a circular thin-walled cover part; the outer wall of the cover board is rounded and smooth; a connectingthread is formed in the inner side wall of the cover board; a through hole is formed in the middle of the cover board; a middle clamping plate is arranged in the cover board and located in the middle; the diameter of the middle clamping plate is smaller than that of the through hole and located right below the through hole; the middle clamping plate is connected with the edge of the through holethrough a connecting ring; and the middle clamping plate and the cover board are connected in a sealed mode through the connecting ring.

Description

technical field [0001] The invention relates to a plugging cover connection structure of a pipeline-type explosion suppressor for gas extraction, which relates to a connection device for sealing a pipeline-type explosion suppressor installed in a wattage delivery pipe during the process of gas extraction and extraction, and belongs to coal mine equipment field. In particular, it relates to a connection device for preventing the sealing plate from corroding and falling off by clamping and screwing the rear end of the detonation suppressor to match the fixed position. Background technique [0002] At present, in the process of gas extraction, there are relatively high potential safety hazards. In the process of gas extraction and transportation, explosion suppressors are used to alleviate the crisis. Usually, the explosion suppressors are installed on the delivery pipe through the tee pipe, and the explosion suppressors are Spray powder to isolate the gas, prevent the fire in...

AI Technical Summary

Problems solved by technology

[0002] At present, in the process of gas extraction, there are relatively high potential safety hazards. In the process of gas extraction and transportation, explosion suppressors are used to alleviate the crisis. Usually, the explosion suppressors are installed on the delivery pipe through the tee pipe, and the explosion suppressors are Spray powder to isolate the gas, prevent the fire in the pipeline from spreading, and affect the safety along the line. After the explosion suppressor is installed, it will be blocked at the end to prevent the explosion suppressor from retreating under the high pressure of the gas. The ejection range of the spray head of the explosion suppressor becomes smaller. When the existing explosion suppressor is installed, the explosion suppressor is directly fixed on the tee pipe through the flange, so that the spray head is placed in the tee pipe, and the transmission When vibration occurs, the connecting screws on the flange will loosen, affecting the seal between the explosion suppressor and the tee pipe, resulting in gas overflow, and some directly fix the explosion suppressor through the screw end cap, but the single The screw connection is easy to fall off during use, and because the gas contains moisture and the concentration of coal powder is high, and the main fire extinguishing medium of the explosion suppressor is dry powder, which will form acidity when it meets water, and will flow along the thread gap, causing damage to the thread connection. Corrosion affects the connection strength, and the end cap will be pushed off under the gas strength

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