Online vacuum oiling device for oil conservator and using method of online vacuum oiling device

Abstract

The invention discloses an online vacuum oiling device for an oil conservator, and relates to the field of vacuum oiling devices for oil-immersed transformers or reactors. When an oil-immersed transformer or a reactor slightly leaks oil in a large-load period, the power failure is difficult to apply, but an existing device adopts a vacuum oil injection and filtration mode after power failure of the equipment, so the oil flow of the device is high, and if online vacuum oil injection and filtration is carried out, the overall vacuum of the transformer or reactor is easily damaged, and heavy gasaction can be caused when the oil flow speed is too high. The device comprises a vacuum cylinder, a pure oil cylinder, an oil storage pipeline, a vacuumizing pipe, an oil injection pipe, an oil returnpipe and a three-way valve. When the device is in use, all the pipes are connected firstly, air is exhausted from the pipes, and then oil is injected into the oil conservator, and oil is collected from the pipes after oil injection is finished. The problem of online vacuum oil injection and filtration without power failure is solved, air is prevented from being injected into the oil conservator,the risk caused by overall vacuum damage to an oil loop is avoided, and the light gas action risk caused by over-low oil level due to continuous light oil leakage is effectively solved.

Description

technical field [0001] The invention relates to the field of vacuum oiling devices for oil-immersed transformers or reactors, in particular to an online vacuum oiling device for an oil conservator and a use method thereof. Background technique [0002] At present, oil-immersed transformers or reactors leak and leak oil during operation. When the equipment leaks oil slightly during heavy load, it is difficult to apply for a system power outage, and defective equipment needs to be monitored for operation. There is continuous oil leakage in a certain part of the body of the oil-immersed transformer or reactor, which causes the oil level in the oil conservator to be too low. In case of low temperature or sudden temperature change in winter, the oil level of the body drops rapidly, causing the light gas relay to operate, and there is an accident. Risk of power outage. [0003] The existing devices all adopt the method of vacuum filling and filtering oil after the equipment is po...

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Problems solved by technology

[0002] At present, oil-immersed transformers or reactors leak and leak oil during operation. When the equipment leaks lightly during heavy load, it is difficult to apply for a system power outage, and defective equipment needs to be monitored for operation.

There is continuous oil leakage in a certain part of the body of the oil-immersed transformer or reactor, which causes the oil level in the oil conservator to be too low. In case of low temperature or sudden temperature change in winter, the oil level of the body drops rapidly, causing the light gas relay to operate, and there is an accident. risk of blackout

[0003] The existing devices all adopt the method of vacuum filling and filtering oil after the equipment is powered off. The device has a fast oil flow rate, a large volume, and inconvenient operation.

If the existing equipment is used for online vacuum injection and filtering of oil, there are the following problems: 1. The risk of heavy gas action caused by too fast oil flow; 2. The risk of vacuum damage to the transformer or reactor as a whole

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