Vacuum oil injection structure of large oil-immersed transformer and oil conservator and working method of vacuum oil injection structure
An oil-immersed transformer and oil-filling structure technology, applied in the direction of transformer/inductor cooling, etc., can solve the problems of high partial discharge of the transformer, inability to fill part of the oil conservator with vacuum oil, insufficient degassing of the transformer oil, etc., so as to prevent the suction of the vacuum pump. , to ensure the effect of work reliability
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[0015] In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with reference to the accompanying drawings.
[0016] The vacuum oil filling structure of the large oil-immersed transformer and oil conservator of the present invention comprises a large oil-immersed transformer 3 having an oil inlet 1 and a first negative pressure port 2, and an oil conservator is arranged above the large oil-immersed transformer 3 4. The large oil-immersed transformer 3 is provided with a transitional oil tank 5 for vacuum oil filling, and a third communicating pipeline 7 with a third butterfly valve 6 is connected between the transitional oil tank 5 for vacuum oil filling and the oil conservator 4. The oil conservator 4 The second communication pipeline 9 with the second disc valve 8 is connected with the large oil-immersed transformer 3, the first negative pressure port 2 is provided wi...
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