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A gob gas detection equipment and its gas extraction device

A technology for extracting devices and gas, which is applied in mining equipment, mining devices, gas discharge, etc., can solve problems such as sampling failure, rock cover and blockage of collapsed nozzle diameter, and rock damage of remote sampling and extraction pipes, etc. blockage, increase structural strength, and avoid premature damage

Active Publication Date: 2022-04-01
HENAN INST OF ENG +1
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AI Technical Summary

Problems solved by technology

[0004] The existing remote sampling and monitoring device is actually a gas extraction device used to extract gas, which has the following problems during use: the remote gas collection point is often in a location prone to collapse such as gobs and blasting sites, However, in the prior art, the orifice of the remote sampling and extraction pipe is small and is easily covered and blocked by collapsed rocks, resulting in sampling failure, and the remote sampling and extraction pipe is also easily damaged by collapsed rocks.

Method used

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  • A gob gas detection equipment and its gas extraction device
  • A gob gas detection equipment and its gas extraction device
  • A gob gas detection equipment and its gas extraction device

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Embodiment Construction

[0032] An embodiment of gas detection equipment in a gob Figure 1~4 As shown: it includes a gas collection pump 12 and a gas extraction device connected to the gas extraction port 9 of the gas collection pump. The gas collection pump’s gas outlet 10 is connected to a gas collector. The gas collector is an air storage bag 11 in this embodiment. The gas extraction device includes a remote sampling exhaust pipe and a gas extraction end 13 connected to the air inlet of the remote sampling exhaust pipe, which is composed of a ventilating inner pipe 7, a stainless steel bellows 6 and a rubber sleeve 5. The stainless steel bellows 6 and the rubber sleeve 5 are arranged sequentially from the inside to the outside. The gas extraction end includes an inner protective layer 2 and an outer protective layer 1 arranged at intervals inside and outside. The inner protective layer and the outer protective layer are both cylindrical structures, and the diameters of the inner protective layer a...

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Abstract

The invention relates to a goaf gas detection device and a gas extraction device thereof, which include a remote sampling and extraction pipe, and a gas extraction end is arranged at the air inlet of the remote sampling and extraction pipe, and the gas extraction end includes internal and external intervals. The inner protective layer and the outer protective layer, both of the inner protective layer and the outer protective layer are of cylindrical structure, the inner cavity of the inner protective layer communicates with the air inlet, and a plurality of Radial air intake holes passing through the corresponding protective layer in the radial direction. The invention provides a gas extraction device whose sampling port is not easily covered and blocked by rocks, and goaf gas detection equipment using the gas extraction device.

Description

technical field [0001] The invention relates to goaf gas detection equipment and a gas extraction device thereof in the field of coal mining. Background technique [0002] Mining enterprises, especially coal mines, will produce some toxic and harmful gases during the production process. These gases not only endanger the health of on-site workers, but also some gases will burn and explode when they reach a certain concentration, especially the gas produced during the production process of coal mines. It is the number one killer of coal mines. [0003] Therefore, in order to ensure the safety of construction, it is necessary to detect the gas concentration in the goaf in real time. Chinese patent CN202814767U discloses a "remote sampling and monitoring device for preventing collapse and smashing". Air tubing, gas sampling pump and gas sensor. When in use, set the inlet end of the remote sampling and exhaust pipe at the remote gas collection point, and transport the gas at th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F7/00E21F17/18
CPCE21F7/00E21F17/18
Inventor 郑吉玉靳晓华栗科峰张瑞林田坤云孙光中
Owner HENAN INST OF ENG
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