A safety protection device for gas exploitation

Abstract

The invention discloses a safety protection device for gas exploitation, which comprises two groups of damper frames arranged in the shaft, one group of damper frames are provided with a first reverse damper and a first forward damper from left to right, and the other A second reverse damper and a second forward damper are arranged in the frame of the damper group from left to right, and the first reverse damper and the second reverse damper are in a normally open state. The gas opening adopts a safety protection device, through the structural design of the first locking mechanism, the first locking mechanism and the linkage device between the forward and reverse dampers, so that under normal conditions, when one forward damper is opened, the other The positive air door can be locked without leaving gaps, so that the protective sealing effect of the positive air door is good, and the positive air door is controlled by the negative pressure to control the latch plate to lock the positive air door. Compared with the spring locking method, it avoids a long time Elastic fatigue caused by loose locking occurs.

Description

technical field [0001] The invention belongs to the field of protection equipment for gas exploitation, and in particular relates to a safety protection device for gas exploitation. Background technique [0002] Gas is an associated combustible gas resource in coal mines. As the mining of gas can easily lead to suffocation, explosion, and outburst (gas outburst occurs when the gas pressure in the coal rock layer exceeds the physical and mechanical strength of the coal rock layer), the resulting loss has a relatively large impact. Therefore, the safety protection measures for gas mining are extremely important. Among them, the mine anti-outrush door group is a necessary safety protection device in gas mining. It consists of two sets of forward and reverse dampers. The forward damper is in a normally closed state. The reverse damper is in the normally open state, which can be controlled by the control system and the gas sensor transmission. When the gas protrudes, the reverse ...

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Problems solved by technology

[0003] Since the two forward dampers are usually set with a linkage component to prevent the two forward dampers from opening at the same time, the existing linkage setting is a bucket-type damper interlock device, which during the opening and closing process of one forward damper, the other damper It can also open a gap, which cannot be completely locked, resulting in poor isolation effect, and when gas outburst occurs, because the two positive dampers cannot be opened at the same time, this makes the staff inside the tunnel need to escape in batches. Waiting for one positive damper to close before opening another damper will result in a longer escape time for the staff inside the roadway and increase the risk factor of the staff

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