A compact transformer and a substation equipped with it

Abstract

A compact transformer and a substation assembled therewith, belonging to the technical field of transformers, comprising a transformer body, an oil conservator, a first capsule bag, a second capsule bag and a third capsule bag, a sealing mechanism is installed inside the oil conservator, and the The sealing mechanism includes a first capsule bag, a second capsule bag and a third capsule bag, the outer walls of the first capsule bag, the second capsule bag and the third capsule bag are all attached to the inner wall of the oil pillow, and the Capsules are all placed inside the first capsule bag, the second capsule bag and the third capsule bag. In the present invention, a sealing mechanism is arranged inside the oil conservator, and the sealing mechanism is installed in the first capsule, the second capsule bag, the third capsule bag and the third capsule bag. Adding a load-bearing plate on the basis of the capsule solves the problem that in the prior art, the first capsule bag, the second capsule bag and the third capsule bag are socketed to realize the rupture of the outermost capsule bag reinforced by the capsule bag under high pressure. As a result, there is a gap between the capsule bag in the inner layer and the inner wall of the oil pillow, which is not conducive to the heat dissipation of the transformer.

Description

technical field [0001] The invention relates to the field of transformers, in particular to a compact transformer and a substation equipped with it. Background technique [0002] A transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. Its main components are the primary coil, secondary coil and iron core in the body. The oil tank and oil conservator included in the oil-invasion transformer are also important components of the transformer. Part, and the transformer in the substation needs to be installed in the transformer box of the substation. [0003] In the prior art, the publication number of which is CN110534306A discloses an on-load voltage regulating power transformer with oil conservator protection function, including an oil conservator cylinder, a capsule mechanism is provided in the inner cavity of the oil conservator cylinder, and the capsule The mechanism includes a first capsule, a second capsule and a third caps...

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Problems solved by technology

[0003] In the prior art, the publication number of which is CN110534306A discloses an on-load voltage regulating power transformer with oil conservator protection function, including an oil conservator cylinder, a capsule mechanism is provided in the inner cavity of the oil conservator cylinder, and the capsule The mechanism includes a first capsule, a second capsule and a third capsule, the third capsule is sleeved on the outside of the second capsule, the second capsule is sleeved on the outside of the first capsule, and the oil pillow An exhaust pipe is fixedly installed at the center of the top of the cylinder, and the patent sets the capsule mechanism to consist of the first capsule, the second capsule and the third capsule, so as to prevent the insulating oil from entering the capsule due to the rupture of the capsule and reaching through the connecting pipe. The respirator overflows, and the third capsule and the second capsule are in a sealed connection, and only communicate with the respirator through the first capsule and the second capsule, which reduces the area of ​​air entering the capsule mechanism through the respirator and reduces the amount of insulating oil. The probability of contact with air, however, because the first capsule, the second capsule and the third capsule are placed inside the oil conservator in a socketed manner, when the outermost capsule is pushed by the high pressure of the transformer oil in the fuel tank When there is damage, there will be a gap between the inner two-layer capsule and the inner wall of the oil pillow, which will cause the transformer oil in the fuel tank to come into contact with the air, which will speed up the aging of the transformer oil and make it difficult for the transformer oil to affect the iron. The heat dissipation of the core and the winding will lead to the enhancement of the iron loss, magnetic loss and copper loss of the transformer, which is not conducive to the efficient use of the transformer

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