Anti-explosion diesel engine automatic protection device

Abstract

The invention relates to the field of coal mine roadway drifting mining transportation, in particular to an anti-explosion diesel engine automatic protection device of coal mine vehicles, which can solve the problems of the protection of the diesel engine in the process of using the anti-explosion diesel engines of underground coal mine special vehicles, and the like. The device comprises a sensor, an altitude valve, an air shut-off valve, an air shut-off air cylinder, a fuel shut-off air cylinder, a lubrication oil pilot operated valve, a two-position three-port air control valve, a shuttle valve, a two-position five-port air control valve, and the like, wherein the sensor is integrated with the air valve; the air valve and the altitude valve are connected with a pressure gas circuit behind the two-position five-port air control valve; the altitude valve is respectively connected with the air shut-off valve and the fuel oil shut-off air cylinder; the air shut-off valve is connected with the air shut-off air cylinder; the two-position three-port air control valve is connected with the pressure supply gas circuits of the two-position five-port air control valve, the shuttle valve, the pressure gas circuit, and the sensor; the lubrication oil pilot operated valve is connected with the two-position five-port air valve, the shuttle valve, the diesel engine and the pressure gas circuit. The invention can be used in the coal mine underground environment containing explosive gases.

Description

technical field [0001] The invention relates to the field of coal mine roadway excavation, mining and transportation, in particular to an automatic protection device for explosion-proof diesel engines used in coal mines. Background technique [0002] At present, special vehicles for coal mines are widely used in the field of coal mine roadway excavation, mining and transportation. The explosion-proof diesel engine is a widely used supporting power. During the use of explosion-proof diesel engines, there are strict requirements on the exhaust temperature of the diesel engine, the surface temperature of the body, the temperature of cooling water, the water level of the explosion-proof scrubber, the pressure of diesel engine oil, and the pressure of compressed air. When any of the above items exceeds or reaches the required standard, the diesel engine should alarm and stop automatically. Otherwise, it will cause damage to the diesel engine and cause the danger of explosive ga...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an automatic protection device for explosion-proof diesel engines used in coal mines to solve the problems of protection of explosion-proof diesel engines and their supporting vehicles during the use of special vehicles for coal mines. The cooling water temperature, the water level of the explosion-proof scrubber, the oil pressure of the diesel engine, and the pressure of the compressed air are tested, and when any of them exceeds or fails to meet the required standards, the diesel engine will automatically stop

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