Liquid level protection mechanism for power transformer

Abstract

The invention discloses a liquid level protection mechanism for a power transformer. The mechanism comprises a power transformer oil tank, a liquid level display device, a controller, an oil pump, and an oil storage tank. An electronic pressure release valve is disposed above the power transformer oil tank, and an electronic oil discharge valve and a one-way valve are disposed below the power transformer oil tank. The oil storage tank is connected with the electronic oil discharge valve, and is connected with the one-way valve through the oil pump. The liquid display device is communicated with the electrically connected power transformer oil tank. The liquid level display device, the electronic pressure release valve, the electronic oil discharge valve and the oil pump are respectively in electrical connection with the controller. The beneficial effects of the invention are that the mechanism achieves the automatic increasing and decreasing of the oil in the power transformer oil tank, improves the detection precision, achieves the remote monitoring and alarm, can achieve the remote operation, guarantees the use safety of an electronic transformer, is high in safety and reliability, is convenient and quick in operation, reduces the labor intensity of a worker, and reduces the production cost.

Description

technical field [0001] The invention relates to the technical field related to power transformers, in particular to a power transformer liquid level protection mechanism. Background technique [0002] At present, the usual transformers are equipped with an oil conservator, and an oil level gauge is installed at one end of the oil conservator, on which there are three oil level lines (or temperature indicator lines) indicating that the oil temperature is -30°C, +20°C and +40°C ), in order to monitor the oil level at different oil temperatures. According to these three oil level lines, it can be judged whether it is necessary to refuel or drain the oil. If the oil level is higher than the oil level line of +20°C when the temperature is +20°C, it means that there is too much oil in the transformer, and the maintenance personnel should be notified to drain the oil to lower the oil level to the oil level line; At the same oil temperature, if the oil level is lower than the oil ...

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Problems solved by technology

[0004] None of the above-mentioned transformer oil level gauges can inform the operator in time when the oil level is abnormal. At the same time, the operator still needs to manually operate when replenishing and reducing oil, which greatly reduces the operating accuracy and also has certain potential safety hazards.

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