Hydraulic leakage-proof control device

Abstract

The invention relates to a hydraulic leakage-proof control device and belongs to the technical field of hydraulic detecting equipment. The hydraulic leakage-proof control device is used for monitoringand controlling oil leakage of a hydraulic cylinder. According to the technical scheme of the hydraulic leakage-proof control device, a monitoring work part comprises a first three-position and four-way reversing valve, a first leakage-proof device and a second leakage-proof device; two external-connection end openings of the first three-position and four-way reversing valve are connected with ahydraulic oil pipeline, and two output end openings of the first three-position and four-way reversing valve are connected with oil inlets in the two ends of a piston cylinder of the monitored hydraulic cylinder through hydraulic oil pipelines correspondingly; and the first leakage-proof device and the second leakage-proof device are mounted in hydraulic oil pipelines at the two ends of the hydraulic cylinder correspondingly. Parts, such as displacement sensors, electronic cabins, magnetic rings and measuring rods, of the leakage-proof devices can monitor the oil amount of hydraulic oil in thehydraulic cylinder, and when oil leakage occurs to the hydraulic cylinder, connection between the leakage-proof devices and a whole system can be automatically cut off; and the hydraulic leakage-proof control device creatively adopts the leakage-proof devices to monitor the oil amounts in different cavity bodies of the monitored hydraulic cylinder, and whether oil leakage occurs to the hydrauliccylinder or not can be accurately judged.

Description

technical field [0001] The invention relates to a device for reducing and detecting leakage of a hydraulic system and preventing shutdown accidents caused by oil leakage hydraulic system paralysis, and belongs to the technical field of hydraulic detection equipment. Background technique [0002] In the hydraulic system, the hydraulic pipeline has many oil pipes, many elbows, many connecting hoses, and long pipelines, which are easily damaged and deformed, resulting in leakage of the pipeline, and oil leakage of the hydraulic cylinder after long-term use. In the multi-strand continuous casting machine tension leveler and sector section, there are many hydraulic cylinders, and the pipelines are densely distributed at the lowest part of the equipment. Working in high temperature and high humidity conditions, oil leakage is prone to occur. During the online production process, there is cooling water on the hydraulic cylinders and hydraulic pipelines, and the cooling water is att...

AI Technical Summary

Problems solved by technology

However, with the improvement of the efficiency of the hydraulic station pump, a fuel tank is connected to the return oil of a dozen or dozens of hydraulic cylinders. The hydraulic cylinders and pipelines are installed in harsh environments such as high temperature. It is also not easy to check which oil pipe and oil cylinder are leaking oil. After a long time of searching, the hydraulic station will stop and the pump will be paralyzed, causing a large area of ​​equipment accidents

[0005] 2. The image acquisition method used is to scan the faulty part. This method uses optical and electronic components such as cameras, and is expensive in large-scale hydraulic equipment and is not suitable for harsh environments.

This method is affected by equipment operating status, pressure fluctuations, liquid level fluctuations and other factors, and false alarms may also occur

[0007] The above hydraulic oil leakage and detection methods have the same limitations as follows: First, whether it is a liquid level alarm or a pressure alarm, it is a detection result of the overall hydraulic system, and does not affect the specific pipeline or cylinder oil leakage. I know, especially for the tension leveler of the continuous casting machine, the hydraulic equipment of the fan section is densely covered in the environment of high temperature, high humidity, external cooling water, and the oil leakage cannot be checked online; secondly, the hydraulic oil leakage The detection result can only stay on the alarm, and the oil leakage point cannot be automatically cut off. It is easy to leak the hydraulic oil in the oil tank in the hydraulic station, causing the pump to stop, shutting down, paralyzing all online equipment, and leading to the expansion of the accident.

If a large amount of hydraulic oil leaks suddenly, such as burst pipes and cylinders, even after the alarm, the oil in the hydraulic oil tank will have leaked before the oil leakage point is found, resulting in production shutdown accidents

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