Transformer Oil Conservator with Piston Structure

Abstract

A transformer oil conservator with a piston structure comprises a circular conservator body. A bottom plate and a flange blanking plate are arranged on the side faces of the conservator body respectively, a support is arranged on the conservator body, an oil inlet pipeline is connected to the conservator body, an adaptive piston is arranged in the conservator body, a fixing plate is connected in the conservator body close to the bottom plate, a spring is connected between the fixing plate and the piston, and the surface of the piston and the surface of the inner wall of the conservator body are respectively provided with a vulcanized integral sealing layer. According to the transformer oil conservator with the piston structure, the technical scheme of the piston structure is adopted, the structure is simple, manufacturing cost is low, the compensation volume is large, a dehydrating breather does not need to be configured, the complete sealing of a transformer is achieved, the oil quality of the transformer is protected, and ageing of transformer oil can be relieved effectively.

Description

technical field [0001] The invention relates to the field of power transformer manufacturing, in particular to an oil conservator for a transformer. Background technique [0002] The role of transformer oil in oil-immersed power transformers is to ensure the insulation strength of the transformer; to transmit the heat generated by the loss of the transformer during operation; to slow down the aging of insulating materials. During the operation of the transformer, due to the change of the ambient temperature and the load of the transformer, the oil temperature of the transformer oil also changes within a certain range, which leads to the change of the volume of the transformer oil. The oil conservator is suitable for oil-immersed power transformers and other power equipment. Its function is to compensate the volume change caused by the expansion or contraction of the transformer oil due to temperature changes. It plays an important role in protecting the normal operation of t...

AI Technical Summary

Problems solved by technology

The oil conservator with this structure preliminarily realizes the isolation of the insulating oil from the air, reduces the moisture absorption and oxidation of the insulating oil to a certain extent, and alleviates the impact of oil cracking on the equipment, but after many years of use, the following problems have also been exposed: ( 1) During the installation, operation and maintenance of the transformer, the capsule is prone to rupture and oil leakage due to insufficient mechanical strength, and it is not easy to be found after damage

(2) The material of the rubber material itself determines that it is easy to age, has a short life, and needs to be replaced regularly, and the replacement and installation work requires the transformer to drain and fill oil, and the workload is relatively large

(3) Since there is a heat-absorbing surface inside the capsule, there are conditions for condensation to form, so the potential threat is great, and the problem cannot be completely solved by adding a moisture absorber

(4) When the capsule stretches poorly, it is prone to respiratory blockage, causing accidents

(5) Due to the low mechanical strength of the rubber capsule, when the transformer is vacuumed, the method of internal and external pressure balance should be adopted. If the installation operation is improper, the capsule is easily damaged, causing unnecessary losses and affecting the normal operation of the equipment

But its disadvantage is that it is troublesome and expensive

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