Alarm monitoring device for anti-explosion power machine pneumatic protection system

Abstract

The invention relates to an alarm monitoring device for an anti-explosion power machine pneumatic protection system, comprising a water level control valve, an exhaust temperature control valve, a coolant temperature control valve, a machine body temperature control valve and a machine oil pressure control valve which are connected in parallel. Air inlets of the control valves are communicated with an air source; air outlets of the control valves are divided into two branches, one branch is connected to different positions of a fault indicator, and the other branch is connected to a main air outlet pipe through a check valve; an oil-breaking cylinder and an air-breaking cylinder are connected on to the main air outlet pipe; when a certain index exceeds standard, the air inlet and the air outlet of the corresponding control valve are communicated, compressed air input by the air source enters into a corresponding position of the fault indicator, and the fault indicator is used for warning an index fault corresponding to the position; and the compressed air also enters into the oil-breaking cylinder and the air-breaking cylinder through the check valve, so that a power machine is halted due to oil and air breaking. The alarm monitoring device is free of anti-explosion processing, has simple principle, and can be used for displaying an alarming index in real time, and the maintenance time is reduced.

Description

technical field [0001] The invention relates to the field of alarm monitoring, in particular to an alarm monitoring device for a pneumatic protection system of an explosion-proof power machine. Background technique [0002] In the process of excavation, mining and transportation of coal mine roadways, various special vehicles for coal mines are required. Due to its high power and low cost, diesel engines are widely used in special vehicles for coal mines. Explosion-proof diesel engines have strict requirements on the exhaust temperature of the diesel engine, body surface temperature, cooling water temperature, oil pressure, and the minimum water level of the purified water tank during use. When any of the above items exceed the standard, the diesel engine should alarm and stop automatically. Otherwise, it will cause damage to the diesel engine and cause the danger of explosive gas explosion in coal mines. Therefore, it is very important to effectively detect and monitor it...

AI Technical Summary

Problems solved by technology

However, the above-mentioned sensors need to be energized to work, so they need to be subjected to explosion-proof treatment according to coal mine safety standards before use. The power supply, controller and other electrical components used in conjunction with the sensor need to be subjected to explosion-proof treatment, resulting in the processing and use of the protection device. It is cumbersome; at the same time, the structure of the alarm monitoring device is relatively complicated and the volume is large, which is not conducive to the layout of the whole machine structure when the space of the whole machine is determined

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