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Bidirectional sealing strip and oil-immersed transformer with same

An oil-immersed transformer, bidirectional sealing technology, applied in transformer/inductor casing, transformer/inductor cooling, transformer/inductor components, etc., can solve problems such as sealing failure, transformer failure, and airtight container suction, etc., to achieve The effect of solving the leakage problem, improving the service life and working stability

Pending Publication Date: 2021-10-26
广东中顺电气制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sealing strips of oil-immersed transformers in the prior art cannot achieve two-way sealing. When the pressure in the container changes from positive to negative, the sealing failure will easily occur, causing gas or liquid to be sucked into the sealed container, causing serious failure of the transformer.

Method used

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  • Bidirectional sealing strip and oil-immersed transformer with same

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 As shown, a two-way sealing strip includes a sealing strip body 1, and a forward elastic sealing portion 3 and a reverse elastic sealing portion 2 are respectively extended on both sides of the sealing strip body 1.

[0028] Preferably, both the forward elastic sealing portion 3 and the reverse elastic sealing portion 2 are arc-shaped sealing portions 2 .

[0029] Preferably, the outer layers of the sealing strip body 1 , the forward elastic sealing portion 3 and the reverse elastic sealing portion 2 are all provided with UV-resistant and oil-resistant coatings.

[0030] Preferably, both the forward elastic sealing part 3 and the reverse elastic sealing part 2 are arc-shaped sealing parts 2 are integrally formed of silicone material through an injection molding machine.

[0031] Compared with the existing technology, the present invention has the following advantages: the bidirectional sealing strip of this patent can realize bidirectional sealing. Un...

Embodiment 2

[0033] An oil-immersed transformer with a two-way sealing ring, including a transformer oil tank, a transformer box edge is welded on the top of the transformer oil tank, an upper cover plate is fixed above the transformer box edge, an insulator is arranged on the top of the upper cover plate, and an insulator is arranged on the top of the transformer box edge. There is a block groove at the top, and a sealing groove for installing a two-way sealing ring is opened on the inner side of the block groove at the top of the transformer box edge. The sealing ring includes a sealing ring body 1 and positive elastic seals on both sides of the sealing ring body 1 Part 3 and reverse elastic sealing part 2, the shape of the sealing groove corresponds to the shape of the two-way sealing ring.

[0034] Preferably, a sealing gasket is glued and connected in the block groove.

[0035] Preferably, both the forward elastic sealing portion 3 and the reverse elastic sealing portion 2 are C-shape...

Embodiment 3

[0040] An anti-leakage fully sealed transformer, including a transformer oil tank cover and a transformer oil tank body, and also includes:

[0041] The first two-way sealing ring, the first two-way sealing ring is arranged at the junction of the transformer oil tank body and the transformer oil tank cover, and the two sides of the first two-way sealing ring are respectively extended with a forward elastic sealing part 3 and a reverse elastic sealing part 2;

[0042] The second two-way sealing ring, the second two-way sealing ring is arranged at the junction of the transformer low-voltage bushing and the transformer oil tank cover, and the positive elastic sealing part 3 and the reverse elastic sealing part 2 are respectively extended on both sides of the third two-way sealing ring;

[0043] The third two-way sealing ring, the third two-way sealing ring is arranged at the connection between the transformer high-voltage bushing and the transformer oil tank cover, and the two sid...

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Abstract

The invention relates to the technical field of power equipment, and discloses a bidirectional sealing strip which comprises a sealing strip body, and the two sides of the sealing strip body extend outwards to form a forward elastic sealing part and a reverse elastic sealing part respectively. Compared with the prior art, the bidirectional sealing strip or sealing ring has the following advantages that bidirectional sealing can be achieved, when a sealing leakage point appears in main sealing of a sealing container, the forward elastic sealing part and the reverse elastic sealing part seal the leakage point under the action of pressure, and the sealing state is formed. The leakage problem of a sealing system is effectively solved, and the service life and working stability of the transformer are improved.

Description

technical field [0001] The invention relates to the technical field of electric equipment, in particular to a bidirectional sealing strip and an oil-immersed transformer with the bidirectional sealing strip. Background technique [0002] The oil tank is one of the most important parts of the oil-immersed transformer. The body of the transformer and the transformer oil are placed in it. The oil tank cover and the oil tank are connected by bolts to isolate the external air and moisture. When in use, a gasket is added between the fuel tank cover and the fuel tank, and it is tightly sealed with the top of the fuel tank. However, the sealing strips of oil-immersed transformers in the prior art cannot achieve two-way sealing. When the pressure in the container changes from positive to negative, the sealing failure will easily occur, causing gas or liquid to be sucked into the sealed container, causing serious failure of the transformer. Therefore, there is a need for a novel bidi...

Claims

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Application Information

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IPC IPC(8): H01F27/02H01F27/14
CPCH01F27/022H01F27/14
Inventor 张俊忠
Owner 广东中顺电气制造有限公司
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