Water and gas separation detection protection device for precisely judging water diversion state of mine draining pump

Abstract

The invention discloses a water and gas separation detection protection device for precisely judging the water diversion state of a mine draining pump. The water and gas separation detection protection device is mainly used in the condition that the water diversion state of the pump needs to be monitored before the pump is started under the premise that a water source is lower than the pump in the process of mine underground draining. The device is composed of an automatic controller, a vacuum tank, a liquid level meter, a pump exhaust valve, a jet device, a jet flow source valve, a filter, a water baffle and a matched pipeline. According to the water and gas separation detection protection device, due to the fact that the unique vacuum tank and the installation position of the vacuum tank are designed, the liquid level meter is added to the top of the vacuum tank to detect the water level of the vacuum tank, after the water level in the vacuum tank is detected to reach a set point, the controller sends out a pump starting order, with the method, the water diversion state of the draining pump can be precisely judged, and the pump can be protected against dry sucking and dry grinding when water diversion does not reach the condition; an exhaust electric ball valve is made to get away from the water source in a water and gas separation vacuum pumping detection mode, and therefore the correct action and the service life of the ball valve are greatly ensured.

Description

technical field [0001] The invention belongs to the technical field of mine drainage, and in particular relates to a water and gas separation detection and protection device for accurately judging the water diversion state of a mine drainage pump. Background technique [0002] When the water source of the mine underground drainage pump is lower than that of the pump, it is necessary to divert water before starting the pump, that is, to fill the pump cavity with water before starting the pump for water supply and drainage, because the water level of the water tank and the air leakage of the pipeline and the pump Due to the uncertainty of the water pump, the true water diversion status of the water pump cannot be accurately detected, and the phenomenon of dry pumping and dry grinding of the water pump due to insufficient vacuum cannot be protected. [0003] At present, there are two main detection methods used in China: negative pressure sensor detection and electric contact n...

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Problems solved by technology

[0005] Due to the poor water quality in mines, containing corrosive components and a lot of sediment, the authenticity of the signals detected by the negative pressure sensor and the electric contact negative pressure mechanical meter is very poor, which is difficult to use as a basis for judgment; at the same time, due to the mine drainage pump and The leakage of air and water in the drainage pipe is serious, and the water level of the water tank is different every time the pump is started. The vacuum degree of the pump is different, so the above two methods of detecting the vacuum degree are not reliable, and the judgment of the water diversion state when the mine drainage pump is started is not enough to rely on, and it is easy to cause the pump to start because the water diversion condition is not met. The phenomenon of dry pumping and dry grinding of the drainage pump

However, there is currently no protection device for accurate detection of the water diversion status of mine drainage pumps in China

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