Automatic explosive-resisting device mounted on gas conveyer tube

A technology for conveying pipelines and gas, which is applied in the field of automatic explosion-proof devices to achieve the effect of preventing the occurrence of gas combustion and explosion disasters in mines and shortening the shutdown time.

Active Publication Date: 2009-07-15
CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of gas combustion / explosion, the speed is very fast, and it is necessary to shut down the gas transmission pipeline in a short time to block the diffusion of gas combustion / explosion in a timely manner, which is still a technology that needs to be solved for the safe transportation of low-concentration gas problem

Method used

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  • Automatic explosive-resisting device mounted on gas conveyer tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: The sensing device is a flame sensor.

[0016] see figure 1 , the bracket 14 is installed in the valve body 6 of the pipeline blocking valve, and then the piston actuator 7 and the protective cover 15 of the actuator are installed on the bracket 14, and the inlet pipe 5 and the outlet pipe 8 are respectively installed with two parts of the actuator 7. The piston rod 13 of the actuator is connected with the spool 9, the spool 9 corresponds to the sealing ring 10 arranged on the edge of the valve body mouth, the guide rod 12 is installed on the outside of the piston actuator and passes through it. through the sleeve 11; install the gas generator 4 outside the valve body 6, and communicate with the intake pipe 5 installed on the actuator in the valve body;

[0017] Install sensor 1—flame sensor 1—1 on the gas conveying pipeline, 40m away from the pipeline blocking valve, and its front end extends into the pipeline; connect controller 2 (composed of signal co...

Embodiment 2

[0018] Embodiment 2: The sensing device is a pressure sensor.

[0019] see figure 1 , the sensor installed on the gas pipeline is a pressure sensor 1-2, specifically the DBY300 piezoresistive pressure transmitter produced by Shaanxi Baoji Qinling Sensor Factory. All the other are the same as the first embodiment.

Embodiment 3

[0020] Embodiment 3: The sensor device is an electromechanical combustion / explosion sensor.

[0021] see figure 1 , the sensor installed on the gas pipeline is an electromechanical combustion / explosion sensor 1-3, which is a new product independently developed by the applicant, and has applied for a patent; the patent application number is 200720125234.4, and the name is "electromechanical combustion / explosion sensor". All the other are the same as the first embodiment.

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PUM

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Abstract

The invention relates to an automatic explosion-preventing device installed on a gas conveying pipeline, which includes a pipeline blocking valve, an actuator is arranged on a bracket in the valve body, and two ends of the actuator are respectively provided with an air inlet pipe and a Outlet pipe, the piston rod of the actuator is connected with the valve core, and the valve core is concentric with the valve sealing surface set on the outlet edge of the valve body. It is characterized in that: a gas generator is set outside the valve body and communicates with the intake pipe; The sensor device is set on the gas transmission pipeline, 40-60m away from the pipeline blocking valve, and its front end extends into the pipeline; a controller is connected with the sensor device and the gas generator. It has the following advantages: it utilizes the characteristics of rapid gas production of the gas generator, and can shut down the gas transmission pipeline in a very short time, effectively preventing the mine gas combustion and explosion disasters from occurring.

Description

technical field [0001] The invention relates to a safety device for gas transportation, in particular to an automatic explosion-proof device installed on a gas transportation pipeline. Background technique [0002] Coal mine gas management adheres to the twelve-character policy of "draining first, then mining, monitoring and monitoring, and determining production by wind", which clearly expresses the importance of gas drainage. In order to ensure the safety of life and property, coal mines discharge gas in time. Gas is a valuable energy source and should be fully utilized. The safety technical problems of gas transportation with a concentration of more than 30% have been solved. However, the concentration of gas drained from coal mines cannot be guaranteed to be above 30% (coal mines refer to gas with a concentration lower than 30% as low-concentration gas). Emission of low-concentration gas not only causes waste of energy, but also seriously pollutes the environment. In ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17D5/00
Inventor 刘胜林雪峰唐勇李柏均杨娟岳建平董稹邸志强任文贤
Owner CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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