Rolling-free sealing lead-out bushing and assembling method thereof

An outlet bushing and rolling technology, applied in the field of power transmission and transformation, can solve the problems of reducing the strength of the bushing 2, uncontrolled deformation, small strength, etc., to ensure the mechanical strength and reliability, the assembly process is simple, and the guarantee The effect of mechanical strength

Active Publication Date: 2015-09-02
西安创新能源工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. In order to facilitate rolling, a rolling groove 20 is designed on the main body of the porcelain bushing 2. The diameter of the porcelain bushing at the longest point of the force arm is the smallest, and the strength is the smallest. This design seriously reduces the strength of the bushing 2
[0004] 2. Since it is rolled on the main body of the porcelain sleeve 2, in order to roll the stainless steel flange 1 and the porcelain sleeve 2 into one, there must be a large enough rolling force to deform the stainless steel flange 1 and embed it into one body with the porcelain sleeve 2. This force often causes stress concentration and damage to the rolling groove of the porcelain sleeve, so that the porcelain sleeve is affected by the change of ambient temperature during the production process of the capacitor and the operation of the outdoor hanging net, and is brittle at 20 places in the rolling groove.
[0005] 3. The rolling process makes the stainless steel flange 1 deformed and covered on the porcelain sleeve 2, but after the stainless steel flange 1 is deformed, the thickness becomes thinner, the force it can withstand is greatly reduced, and it is easy to fall off and fail
The ceramic sleeve 2 with poor precision is combined with the stainless steel flange 1 with high precision, the gap space between the two (where the sealing gasket 3 is placed) is uncontrolled, the deformation of the sealing ring 3 is uncontrolled, and the sealing of the porcelain sleeve is not controlled. effect cannot be guaranteed
Therefore, the outlet casing of this structure often fails to seal in batches

Method used

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  • Rolling-free sealing lead-out bushing and assembling method thereof
  • Rolling-free sealing lead-out bushing and assembling method thereof
  • Rolling-free sealing lead-out bushing and assembling method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] see image 3 As shown, a rolling-free sealed outlet bushing of the present invention includes a porcelain sleeve 2 , an annular pressing flange 3 and a sealing connecting flange 4 .

[0036] The porcelain sleeve 2 is provided with a porcelain flange 21 ; the lower part of the porcelain flange 21 is provided with a sealing ring accommodation groove 210 . A sealing ring 5 is installed in the sealing ring accommodating groove 210; in the natural state that the sealing ring 5 is not compressed, the sealing ring 5 protrudes only outside the sealing ring accommodating groove 210; the height of the sealing ring accommodating groove 210 is 5 50% to 70% of the height in the natural state.

[0037] see Figure 6 and Figure 7 As shown, the annular clamping flange 3 includes a cylindrical portion 31 and a cover 32 (or only the cover 32 ) disposed on the top of the cylindrical portion 31 , and the center of the cover 32 is provided with a first through hole 33 . The annular com...

Embodiment 2

[0041] The difference between Embodiment 2 and Embodiment 1 is that the upper part of the porcelain flange 21 has a plane, and the cover body 32 is provided with a platform matching the plane, which can increase the ring clamping flange 3 to be fixed on the porcelain flange 21. retention.

Embodiment 3

[0042] The difference between embodiment 3 and embodiment 2 is that in embodiment 2, the turned-out connecting flange 45 and the cylindrical part 41 are separate structures ( Figure 4 shown); in embodiment 3, the eversion-type connecting flange 45 and the cylindrical portion 41 can be of an integrated structure ( Figure 5 shown).

[0043] In the present invention, there is an anti-rotation matching structure between the porcelain flange 21 and the sealing connection flange 4 to prevent the sealing connection flange 4 from rotating around the axis of the porcelain flange 21:

[0044] A plurality of grooves are set on the porcelain flange 21, and a plurality of protrusions are correspondingly arranged on the sealing connection flange 4 to snap into the corresponding grooves, so that after the sealing connection flange 4 is fixed on the porcelain flange 21, the sealing connection flange 4. It cannot rotate around the axis of the porcelain flange 21;

[0045]Alternatively, a p...

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PUM

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Abstract

The invention discloses a rolling-free sealing lead-out bushing and an assembling method thereof. The lead-out bushing comprises a porcelain bushing, an annular clamping and pressing flange and a sealing connection flange. A porcelain flange is arranged on the porcelain bushing. A lower portion of the porcelain flange is provided with a sealing ring accommodation groove. A sealing ring is arranged in the sealing ring accommodation groove. The annular clamping and pressing flange comprises a cover body. A center of the cover body is provided with a first through hole, wherein the porcelain bushing passes through the first through hole. The sealing connection flange comprises a first cylinder portion and a base plate arranged on a bottom portion of the first cylinder portion. A center of the base plate is provided with a second through hole, wherein the porcelain bushing passes through the second through hole. The annular clamping and pressing flange is installed on an upper portion of the porcelain flange. The sealing connection flange is installed on a lower portion of the porcelain flange. The annular clamping and pressing flange and the sealing connection flange are fixedly connected. In the invention, the annular clamping and pressing flange is segmented along a radial direction and is convenient for being covered on the upper portion of the porcelain flange. And the annular clamping and pressing flange and the porcelain flange are fixed and form one body through welding. Mechanical strength of the annular clamping and pressing flange is effectively guaranteed and a shedding phenomenon is not generated.

Description

【Technical field】 [0001] The invention relates to the technical field of power transmission and transformation, in particular to a rolling-free sealed outlet bushing and an assembly method thereof. 【Background technique】 [0002] see figure 1 As shown, the existing high-voltage capacitor outlet bushing includes a stainless steel flange 1 and a porcelain sleeve 2; There is the sealing ring 3 that is compressed to seal; but rolling is done on the porcelain sleeve 2. This has the following disadvantages: [0003] 1. In order to facilitate rolling, a rolling groove 20 is designed on the main body of the porcelain bushing 2. The diameter of the porcelain bushing at the longest point of the force arm is the smallest and the strength is the smallest. This design seriously reduces the strength of the bushing 2. [0004] 2. Since it is rolled on the main body of the porcelain sleeve 2, in order to roll the stainless steel flange 1 and the porcelain sleeve 2 into one, there must be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B17/58H01B17/38H01B19/00
Inventor 黎琛
Owner 西安创新能源工程有限公司
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