Coal-mine gas injection system and jet ejector used in coal-mine gas injection system

A coal mine gas and gas sensor technology, applied in the direction of gas discharge, jet pumps, mining equipment, etc., can solve problems that easily affect the service life of equipment, affect the operation of pneumatic equipment, and waste air volume

Pending Publication Date: 2018-05-15
SHANXI ZHENGDAHENGTONG TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0005] 1. After the ejector is installed in the dead corner or blind gas area, open the valve and the equipment starts to work. When the gas concentration drops, the ejector continues to work and cannot be started and stopped automatically, resulting in waste of air volume and affecting other air movements. equipment operation
[0006] 2. The air compressor in the fan room works continuously for a long time,

Method used

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  • Coal-mine gas injection system and jet ejector used in coal-mine gas injection system

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Embodiment Construction

[0022] like figure 1 As shown, a coal mine gas injection system includes a monitoring host 4, a data information conversion and transmission device 7, a gas dilution unit and a signal repeater 15, the monitoring host 4 and the data information conversion and transmission device 7 are set on the ground, and the monitoring host 4. It is connected to the data information conversion and transmission device 7. The gas dilution unit and the signal repeater 15 are installed underground in the coal mine.

[0023] The gas dilution unit includes an underground monitoring substation 9, an intrinsically safe power module 8, a gas sensor 10, a flow device 11, a breaker 13, a solenoid valve 12 and a compressed air filter 14, an intrinsically safe power module 8 and an underground monitoring substation 9 The power supply input terminal of the underground monitoring substation 9 is connected with the data information conversion transmission device 7, the gas sensor 10 is connected with the in...

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Abstract

The invention provides a coal-mine gas injection system and a jet ejector used in the coal-mine gas injection system, and belongs to the technical field of mine safety. The technical problem to be solved is to provide the coal-mine gas injection system and the jet ejector used in the coal-mine gas injection system; the injection system includes a monitoring host, a data information conversion andtransmission device, gas dilution units and signal repeaters; the monitoring host and the data information conversion and transmission device are arranged on the ground, the monitoring host is connected with the data information conversion and transmission device, the gas dilution units and the signal repeaters are arranged in a coal-mine well, the plurality of gas dilution units are arranged in different operation regions in the coal-mine well, and the gas dilution units are connected through the signal repeaters.

Description

technical field [0001] The invention relates to a coal mine gas ejection system and a jet ejector used therein, belonging to the technical field of mine safety. Background technique [0002] According to the mining methods and geological conditions of my country's coal mines, more than 80% of the coal mines adopt retreating coal mining, and a large amount of gas will be emitted during the coal mining process. Therefore, coal production enterprises invest huge sums of money every year to solve the problem of gas exceeding the limit, but so far still It is not perfect enough. Through the gas drainage system, the gas in the coal seam can be pumped, discharged and discharged. Due to the special geographical environment underground, there are still dead angles and blind spots. For example: as the coal mining face continues to lengthen, the problem of gas and accumulation in the upper corner of the retreating coal mining face becomes more and more serious. Here, therefore, an ext...

Claims

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Application Information

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IPC IPC(8): E21F7/00E21F17/18F04F5/16
CPCE21F7/00E21F17/18F04F5/16
Inventor 孙贾潞朱永星郭艳君栗靖翔刘燕琦冀中石宋昊婷苏永红
Owner SHANXI ZHENGDAHENGTONG TECH CO LTD
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