A dynamic monitoring device and monitoring method for the liquid level of a hydraulic system oil tank

Abstract

The invention provides a dynamic monitoring device and method for the liquid level of an oil tank of a hydraulic system. The dynamic monitoring device for the liquid level of the oil tank of the hydraulic system comprises a controller and a liquid level sensor which is used for detecting the liquid level of the oil tank of the hydraulic system. An analog signal output end of the liquid level sensor is connected with an analog quantity input module of the controller through a communication cable. A digital quantity output module of the controller is connected with an alarm. The controller is connected with a display unit. The dynamic monitoring device can dynamically monitor the liquid level of the oil tank and can give an alarm in time when the oil tank begins to leak oil, so that early checking and handling are facilitated, potential safety hazards are eradicated, and economic loss is lowered; besides, the variable quantity of the liquid level of the oil tank in a preset time period can be known through calculation, so a decision-making basis can be provided for an operator, and the operator can make a correct selection between halt loss and leakage loss conveniently; moreover, the dynamic monitoring device is simple in structure and convenient to popularize and apply.

Description

Technical field [0001] The invention relates to the field of oil tank liquid level monitoring, in particular to a hydraulic system oil tank liquid level dynamic monitoring device and a monitoring method in which the liquid level signal is output in the form of an analog signal. Background technique [0002] The hydraulic system is at the core of power transmission and automatic control. Oil leakage is the most prominent problem in the hydraulic system. Due to the large number of pipelines, many hidden oil leaks are difficult to find by spot inspection. [0003] In view of the high pressure and large flow of the hydraulic system, leakage failures often occur suddenly. Once the oil leakage occurs in a hidden location or when no one is aware of it, it will cause a large amount of leakage, which will not only cause large economic losses, pollute the environment, but also cause fire hazards. [0004] The existing liquid level monitoring system usually has a transparent glass tube or a m...

AI Technical Summary

Problems solved by technology

The existing monitoring system will think that the oil leaks and make a misjudgment, thus sending out an error message, and even causing the pump unit to suddenly jump and stop the pump for protection

[0006] In addition, for oil tanks that are vertically installed or have a small cross-sectional area, once a large flow of oil leakage occurs, the control system often cannot receive the oil leakage feedback signal due to the rapid drop in the liquid level, which often causes the entire tank of oil to leak. Consequences of the spill soon

Due to the missed judgment of the existing monitoring system, the staff often cannot find the oil leakage in the fuel tank in time, and cannot make reasonable treatment in time, which makes the pump set suddenly protectively jump and shut down when the liquid level is extremely low, causing serious production accidents or equipment accidents , resulting in large economic losses

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