A coal mine underground drilling rig hydraulic oil online monitoring and automatic control system

Abstract

The invention discloses an on-line monitoring and automatic control system for the hydraulic oil of a coal mine underground drilling rig, which includes an oil product early warning and monitoring device for a coal mine underground drilling rig, a cooler conductive rod signal detection device, a cooler water pressure differential pressure change detection device, and a tubular high-pressure filter. Device pressure difference detection device, tubular high-pressure filter proximity switch detection device and oil tank liquid level and temperature detection device; coal mine underground drilling rig oil early warning monitoring device is connected to the coal mine underground drilling Signal, pressure measurement signal, trigger signal, hydraulic oil level information and hydraulic oil temperature information control whether the executive mechanism of the coal mine underground drilling rig stops working. The invention solves the problem of oil product drop caused by oil-water mixing after the cooler breaks down, and also solves the wear and damage of pumps, valves and other hydraulic parts caused by unfiltered hydraulic system, too little hydraulic pressure and too high temperature due to negligent observation The problem.

Description

technical field [0001] The invention belongs to the field of coal mine underground hydraulic oil monitoring, in particular to an online monitoring and automatic control system of coal mine hydraulic oil. Background technique [0002] Coal mine underground drilling rigs generally use water cooling to cool the hydraulic oil. However, with the increase of coal mining depth, the static pressure water pressure in coal mines also gradually increases. Generally, the cooler is a brazed copper plate with a low pressure rating, within 2MPa. However, in deep mines, the water pressure has exceeded 2MPa, so when the hydraulic system is cooled by water, it is very likely that the brazing copper plate will be broken down, causing water to enter the hydraulic system. It is found that the lubricating performance of the hydraulic oil drops sharply after entering the water, and the water in the hydraulic oil will undergo an oxidation reaction at a higher working temperature. Catalyst for the ...

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Problems solved by technology

[0006] Aiming at the defects and deficiencies in the prior art, the present invention provides an online monitoring and automatic control system for the hydraulic oil of a coal mine underground drilling rig, which solves the problem of oil product drop caused by oil-water mixing after the cooler breaks down, and hydraulic pressure caused by negligent observation. The problems of unfiltered system, too little hydraulic pressure and too high temperature cause wear and damage to hydraulic parts such as pumps and valves, providing a new solution for tunnel drilling rig oil monitoring

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