Hydraulic mechanism oil level monitoring device

Abstract

The invention discloses a hydraulic mechanism oil level monitoring device capable of guaranteeing timely finding or eliminating of inner leakage and pressure losses of a hydraulic mechanism, improvingcircuit breaker running safety stability and guaranteeing reliable power supply of a power grid. The hydraulic mechanism oil level monitoring device comprises an oil level sensor used for detecting and feeding back liquid level information, an indicator lamp for giving an alarm when the oil level is reduced, a one-way check valve for conducting a filter assembly and an oil tank, a pipeline for communicating various oil paths, and a filter assembly for impurity oil filtration. The oil level sensor is fixed to the inner wall of the oil tank, and 0-190 Ohm linear resistance is output according to the oil level. An analog-digital conversion unit is further included and comprises a bleeder circuit and an analog-digital converter, the analog-digital conversion unit converts the resistance output by the oil level sensor into voltage signals, and then the voltage signals are converted into digital signals to be received by a data processing unit. A data processing and control unit and a datacommunication unit are further included.

Description

Technical field [0001] The invention relates to an oil tank oil level monitoring device of a hydraulic mechanism, which is specifically used for oil monitoring and filtering of an oil tank of a circuit breaker. Background technique [0002] The hydraulic circuit breaker has the characteristics of stable operation, reliable action, and the mechanism can still be operated when the mechanism is temporarily de-energized, so it is widely used in the electric system. However, as the service life of the hydraulic circuit breaker increases, different degrees of seal aging, damage, and more impurities in the hydraulic oil will occur, resulting in oil leakage in the hydraulic mechanism. Insufficient hydraulic oil will lead to the inability to reduce pressure. The circuit breaker refuses to operate, which affects the safe and stable operation of the circuit breaker. Therefore, it is necessary to periodically inspect the hydraulic mechanism to ensure the oil level is normal, and at the same ...

AI Technical Summary

Problems solved by technology

However, with the increase of the service life of the circuit breaker of the hydraulic mechanism, the seal gasket will be aged, damaged, and the impurities in the hydraulic oil will increase to varying degrees, which will lead to oil leakage in the hydraulic mechanism. Insufficient hydraulic oil will lead to inability to decompress. The circuit breaker refuses to move, which affects the safe and stable operation of the circuit breaker. Therefore, it is necessary to regularly inspect the hydraulic mechanism to ensure that the oil level is normal. At the same time, filter the hydraulic oil to remove impurities in the oil.

[0003] With the increase of service life, the circuit breaker of the hydraulic mechanism will have different degrees of gasket aging, damage, hydraulic oil impurities, etc., resulting in oil leakage in the hydraulic mechanism. Insufficient hydraulic oil will lead to inability to decompress. The organization conducts inspections to ensure that the oil level is normal; most of the infiltration is caused by impurities in the hydraulic oil, which lead to the poor sealing of the valve body. If the oil level can be monitored in time and the hydraulic oil can be purified, the internal leakage of the hydraulic mechanism can be found or eliminated in time At the same time, the oil level detection and oil sample treatment of the hydraulic mechanism at this stage are mainly done manually by regular inspections, but this method cannot guarantee timely detection or elimination of internal seepage and pressure loss of the hydraulic mechanism, which poses a serious threat Grid security

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