CN203433931U - Full-sealed explosion-proof transformer bushing head structure - Google Patents
Full-sealed explosion-proof transformer bushing head structure Download PDFInfo
- Publication number
- CN203433931U CN203433931U CN201320562347.6U CN201320562347U CN203433931U CN 203433931 U CN203433931 U CN 203433931U CN 201320562347 U CN201320562347 U CN 201320562347U CN 203433931 U CN203433931 U CN 203433931U
- Authority
- CN
- China
- Prior art keywords
- expander
- bushing
- conducting rod
- head
- full
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002184 metal Substances 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 230000004224 protection Effects 0.000 claims abstract description 13
- 238000010276 construction Methods 0.000 claims description 13
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000004880 explosion Methods 0.000 abstract description 3
- 230000006378 damage Effects 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000005422 blasting Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
The utility model discloses a full-sealed explosion-proof transformer bushing head structure. The full-sealed explosion-proof transformer bushing head structure comprises a bottom plate, a strong spring, an expander, a pressure washer and a sealing gasket, wherein the strong spring is connected with the whole bushing in a sealing way through the sealing gasket and a conducting rod; the expander is arranged at the upper part of the conducting rod; the expander adopts a double-corrugated structure; the lower flange of the expander is connected with the bottom plate; the upper flange of the expander is installed on the conducting rod, and is fixed and sealed by the pressure washer; the expander is covered with a metal hood for protection. Through the adoption of the structure, a slight positive pressure is always maintained inside the product, so that water can be effectively prevented from entering the head of the bushing; when the pressure inside the bushing rises due to a fault, the metal expander on the head acts first, so that accidents caused by explosion of the bushing can be effectively avoided; a circular ring step, leading to the main body of the bushing, is arranged inside the metal expander of the bushing, so that water cannot enter the bushing after the expander is damaged and thus, and the safe operation of the bushing within a short time can be still ensured.
Description
Technical field
The utility model relates to a kind of bushing shell for transformer head construction, is specifically related to a kind of hermetically sealed blast protection bushing shell for transformer head construction.
Background technology
Bushing shell for transformer is blasted, and may cause heavy economic losses and the personnel of threat life security, and what existing sleeve pipe head construction was used is conservator structure, has following problem and risk:
1, the main cause that the incipient failure that inside pipe casing water inlet is still occurs, mostly is catastrophic discontinuityfailure, and harmfulness is very big.Main cause is that sleeve pipe head seal wrecks (when the reason of destruction sealing may exist defect or sleeve pipe to install for sleeve pipe head structural design, the misoperation of installation personnel causes), and inside pipe casing infiltrates moisture content.
2, inside pipe casing disruptive discharge, causes insulating oil to decompose in a large number generation gas, causes inside pipe casing pressure excessive, thus the accident of blasting.
Summary of the invention
In order to overcome existing bushing shell for transformer head defect, the purpose of this utility model is to provide a kind of hermetically sealed blast protection bushing shell for transformer head construction, and this head construction reliability is high, can guarantee security of operation, easily realize.
The purpose of this utility model is achieved through the following technical solutions:
A blast protection bushing shell for transformer head construction, is characterized in that: this structure comprises base plate, brute spring, expander, trim ring and sealing gasket, and described brute spring is connected sleeve pipe integral sealing by sealing gasket and conducting rod; Expander is arranged on conducting rod top, and expander adopts dual damascene structure, and the lower flange of expander is connected with base plate, and the upper flange of expander is arranged on conducting rod, and is fixed and sealed by trim ring.
Expander lower flange and base plate are fastening, and have sealing gasket to guarantee sealing, and upper flange is arranged on conducting rod, by trim ring, is fixed and is sealed.Expander is as the oil storage parts of sleeve pipe, for insulating oil in sleeve pipe, expands with heat and contract with cold, and makes inside pipe casing remain pressure-fired, and when inside pipe casing occurs that because of fault pressure raises, head metal expander first moves, and avoids the sleeve pipe accident of blasting because pressure is excessive.
There is metal cap protection expander outside, and metal cap is fixed on conducting rod by nut.In expander, on base, lead to casing main body and establish annular steps, if expander damages, water also cannot be crossed step and enter sleeve pipe, and annular steps, higher than the about 20mm in baseplane, still can guarantee the safe operation of sleeve pipe in the short time after the excessive damage of expander internal pressure.
On stainless steel metal cover, there is a windowpane, can show the height of expander, be convenient to observe oil level.
The utility model makes interiors of products remain pressure-fired, can effectively stop the water inlet of sleeve pipe head, and when inside pipe casing occurs that because of fault pressure raises, head metal expander first moves, and can effectively avoid the generation of bushing explosion accident; In sleeve pipe metal expander, lead to casing main body and be provided with an annular steps, after expander damages, also can not intake, still can guarantee the safe operation of sleeve pipe in the short time.
The utility model structural reliability is high, can guarantee security of operation, easily realize.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
A kind of hermetically sealed blast protection bushing shell for transformer head construction, comprise base plate 1, annular steps 2, brute spring 3, expander 4, trim ring 5, sealing gasket 6, stainless steel metal cover 7, nut 8 and conducting rod 9, by brute spring 3 and sealing gasket, guarantee sleeve pipe integral sealing.Head dress metal expander 4 adopts dual damascene structure, and lower flange 10 is connected with base plate 1, and upper flange 11 is arranged on conducting rod, the fixing and sealing by trim ring 5; There are metal cap 7 protections expander outside, and metal cap is fixed on conducting rod 9 by nut 8, has a windowpane 12 on stainless steel metal cover, can show the height of expander, is convenient to observe oil level.On metal expander 4 inner bottom platings, lead to casing main body and be provided with an annular steps 2, higher than the about 20mm of base plate.
The utility model can effectively stop the water inlet of sleeve pipe head, and when inside pipe casing occurs that because of fault pressure raises, head metal expander first moves, and can effectively avoid the generation of bushing explosion accident; In sleeve pipe metal expander, lead to casing main body and be provided with an annular steps, after expander damages, also can not intake, still can guarantee the safe operation of sleeve pipe in the short time.
Claims (5)
1. a hermetically sealed blast protection bushing shell for transformer head construction, it is characterized in that: this structure comprises base plate (1), brute spring (3), expander (4), trim ring (5) and sealing gasket (6), described brute spring (3) is connected sleeve pipe integral sealing by sealing gasket (6) with conducting rod (9); Expander (4) is arranged on conducting rod (9) top, expander (4) adopts dual damascene structure, the lower flange (10) of expander (4) is connected with base plate (1), and it is upper that the upper flange (11) of expander (4) is arranged on conducting rod (9), and the fixing and sealing by trim ring (5).
2. hermetically sealed blast protection bushing shell for transformer head construction according to claim 1, is characterized in that: outside expander (4), be provided with metal cap (7), metal cap (7) is fixed on conducting rod (9) by nut (8).
3. hermetically sealed blast protection bushing shell for transformer head construction according to claim 1, is characterized in that: on metal cap (7), be provided with windowpane (12).
4. hermetically sealed blast protection bushing shell for transformer head construction according to claim 1, is characterized in that: expander (4) inner bottom plating (1) is provided with an annular steps (2).
5. hermetically sealed blast protection bushing shell for transformer head construction according to claim 4, is characterized in that: annular steps (2) is higher than base plate (1) 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320562347.6U CN203433931U (en) | 2013-09-11 | 2013-09-11 | Full-sealed explosion-proof transformer bushing head structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320562347.6U CN203433931U (en) | 2013-09-11 | 2013-09-11 | Full-sealed explosion-proof transformer bushing head structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203433931U true CN203433931U (en) | 2014-02-12 |
Family
ID=50062956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320562347.6U Expired - Fee Related CN203433931U (en) | 2013-09-11 | 2013-09-11 | Full-sealed explosion-proof transformer bushing head structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203433931U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105632659A (en) * | 2014-11-24 | 2016-06-01 | Abb技术有限公司 | An electrical power component containing an insulating fluid and a condenser core |
| CN112885566A (en) * | 2021-02-08 | 2021-06-01 | 江苏神马电力股份有限公司 | Transformer bushing |
-
2013
- 2013-09-11 CN CN201320562347.6U patent/CN203433931U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105632659A (en) * | 2014-11-24 | 2016-06-01 | Abb技术有限公司 | An electrical power component containing an insulating fluid and a condenser core |
| CN105632659B (en) * | 2014-11-24 | 2018-07-17 | Abb瑞士股份有限公司 | Include the electrical power component of dielectric fluid and chiller core |
| CN112885566A (en) * | 2021-02-08 | 2021-06-01 | 江苏神马电力股份有限公司 | Transformer bushing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 Termination date: 20190911 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |