Coal mine ventilation air methane oxidation device, mash gas adding system and security protection mechanism

Abstract

A gas adding system and a safe protection mechanism for mine lack air methane oxidation device are disclosed. The gas extraction and lack air mixing gas intake system of the oxidation device comprises a gas extracting pipeline and a manual valve mounted thereon, a gas intake main pipeline for mixed extracted gas and lack air and fans mounted thereon, a safety valve and a connection pipe connected with a mechanical cutting valve; the safety protection mechanism comprises a wet type flame arrester, a dry type flame arrester, a quick disconnect valve, a gas adding amount control and regulate valve, and a mechanical cutting valve which are connected from up to down along the flow direction of extracted gas; an electric control system comprises a controller and a power source electrically connected with the same, the controller is also electrically connected with a methane concentration sensor and a level sensor in parallel, and the power source is also electrically connected a discharge valve, the gas adding amount control and regulate vale, the safety valve, the quick disconnect valve and the fans in parallel. The invention has the characteristics of convenient operation, energy conservation, safety, and protection, and can be widely applied to gas adding system for mine methane extraction oxidation devices.

Description

1. Technical field [0001] The invention relates to supply equipment containing mixed gas of methane and air in coal mine exhaust methane destruction equipment, in particular to a gas addition system and safety protection mechanism of a coal mine exhaust methane oxidation device. 2. Background technology [0002] At present, drainage gas with a methane concentration lower than 6% cannot be used for civil purposes or power generation. Even though the methane concentration of some coal mines is higher than 6%, the drainage gas cannot be used because it contains a lot of carbon dioxide or nitrogen. Part of the gas is basically in the state of emptying. A large number of low-concentration gas in coal mines are evacuated, which not only pollutes the atmospheric environment, but also wastes a lot of clean energy, which is a great loss. 3. Contents of the invention [0003] The object of the present invention is to provide a gas addition system and a safety protection mechanism o...

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Problems solved by technology

[0002] At present, drainage gas with a methane concentration lower than 6% cannot be used for civil use or power generation. Although the methane concentration of some coal mines is higher than 6%, the drainage gas cannot be used because it contains a lot of c

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