Corrugated pipe type respirator and transformer oil storage tank

Abstract

The invention provides a corrugated pipe type respirator and a transformer oil storage tank, so that the maintenance-free duration of the transformer oil storage tank is prolonged, and the maintenancecost is reduced. The corrugated pipe type respirator structurally comprises a breather valve, wherein the breather valve is provided with an air inlet and outlet channel. The corrugated pipe type respirator further comprises a metal corrugated pipe, wherein one end of the metal corrugated pipe is hermetically connected with the breather valve, and the air inlet and outlet channel is communicatedwith an inner cavity of the metal corrugated pipe; a port at the other end of the metal corrugated pipe is provided with an end cover in a welding manner to realize closed sealing; and the acting force required by stretching and contracting of the metal corrugated pipe is matched with the atmospheric pressure generated when the internal pressure and the external pressure of the metal corrugated pipe are changed. The transformer oil storage tank further comprises the corrugated pipe type respirator. After the corrugated pipe type respirator and a box body are assembled, the metal corrugated pipe of the corrugated pipe type respirator is located in the box body, and the end, which is used for air inlet and outlet, of the breather valve of the corrugated pipe type respirator is located outside the box body. According to the invention, the technical problem of prolonging the maintenance-free operation time of the transformer is solved.

Description

technical field [0001] The invention relates to the technical field of transformer oil storage tanks, in particular to a bellows type respirator and a transformer oil storage tank. Background technique [0002] In the early application stage of the transformer, the oil storage tank of the transformer is usually unable to self-adaptively adjust the pressure in the oil tank due to the change of oil temperature, so that when the pressure in the oil tank changes, it will have a negative impact on the sealing of the oil tank, and even cause the oil tank to deform in severe cases. Causes the sealing failure of the sealing part. In order to solve the above technical problems, the conventional practice in the prior art is to install a respirator on the oil storage tank of the transformer, and the respirator keeps the inside and outside of the transformer open to achieve pressure balance inside and outside the transformer. In the prior art, the respirator installed in the transforme...

AI Technical Summary

Problems solved by technology

In the prior art, the respirator installed in the transformer oil storage tank usually uses hygroscopic silica gel or rubber airbag as the core working part to prevent water vapor in the air from entering the transformer. Although it can solve the technical problem of balancing the pressure difference inside and outside the oil tank to a certain extent, However, after the silica gel is used for a certain period of time, the hygroscopic effect will fail due to the saturated absorption of water vapor in the air. Continued use will cause the water vapor in the air to enter the transformer oil. In severe cases, the insulation performance of the transformer oil will decrease, which will cause transformer failure

Therefore, in the prior art, when maintaining the transformer oil storage tank, it is necessary to regularly replace the rubber air bag in the transformer oil storage tank, or the discolored silica gel in the respirator, which increases the daily maintenance cost of the transformer oil storage tank to a certain extent. The fuel tank method will also increase the economic burden of the enterprise

In the rubber airbag method, due to the decrease in elasticity caused by the aging of the rubber, it is also necessary to replace the airbag in the oil storage tank regularly.

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