CN201130592Y - Transformer pure porcelain casing tube - Google Patents
Transformer pure porcelain casing tube Download PDFInfo
- Publication number
- CN201130592Y CN201130592Y CNU2007201318110U CN200720131811U CN201130592Y CN 201130592 Y CN201130592 Y CN 201130592Y CN U2007201318110 U CNU2007201318110 U CN U2007201318110U CN 200720131811 U CN200720131811 U CN 200720131811U CN 201130592 Y CN201130592 Y CN 201130592Y
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- conducting rod
- sleeve pipe
- ring
- transformer
- insulator
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Abstract
The utility model discloses a pure porcelain bushing for a 10 to 40.5 kV transformer, which is characterized in that a conductive rod of the porcelain bushing is a hollow copper tube and the inner of the conductive rod is communicated with transformer oil, enabling the material to be fully utilized with lighter weight and good heat dissipation; a sealed shoulder is arranged on the top of the porcelain bushing, eliminating the influence to the sealing performance of the bushing caused by the expanding on heating and contracting on cooling of the conductive rod, and enhancing the rigidity of the conductive rod and the reliability of the seal. The porcelain bushing has the advantages of light weight, low temperature rise, reliable sealing, high strength and low production cost.
Description
Technical field
The utility model relates to a kind of transformer outlet sleeve pipe, particularly a kind of 10～40.5kV oil-filled transformer true procelain sleeve pipe.
Background technology
The transformer industry electric pressure is the most of filling type true procelain structure that adopts of the outlet sleeve pipe of 10～40.5kV.As shown in Figure 1, the true procelain sleeve pipe is made up of binding post 1, nut 2, trim ring 3,4, sealing ring 5,6, insulator 7, conducting rod 8, back-up ring 9 etc.Conducting rod passes from insulator and is connected with insulator by nut 2, ring washer 9.Be fixed on the lower end of insulator with back-up ring 9, by fastening screw nut 2, compresses seal 5,6 guarantees the sealing of sleeve pipe.
The conducting rod length that this structure is expanded with heat and contract with cold to be influenced sealing is the conducting rod total length, because the coefficient of expansion of conducting rod and insulator is different, the coefficient of expansion of copper product is far longer than ceramic material, therefore, when when loading the peak summer, temperature raises and causes the conducting rod elongation.Sealing ring 5,6 suffered pressure will be not enough, easily causes from sleeve pipe top oil impregnate.
In addition, because back-up ring 9 is as a fulcrum, if apply a pulling force at the sleeve pipe top, conducting rod is flexible, the rigidity variation, so bending strength is not high, can not level install.
Because conducting rod is longer, compresses seal must need enough pressure.Therefore, even the electric current sleeve pipe of hundreds of peace only, conducting rod can not be too thin, generally adopts φ more than 40, can cause the waste of material like this.And for the sleeve pipe more than the 2000A, because enough current-carrying performances must be arranged, conducting rod is thicker.And the copper conducting rod has kelvin effect, do not play the current-carrying effect in the middle of the thick conducting rod, so the current-carrying poor performance of copper bar and copper pipe is few.
Summary of the invention
The true procelain sleeve pipe that sealing was reliable and but level is installed when the purpose of this utility model had provided hot operation.
This transformer true procelain sleeve pipe, comprise the conducting rod parts, the insulator that comprise conducting rod, there is radially the step that extends to its axis the upper end of insulator, passes in the hole that conducting rod is opened from the step and is connected with step, and the insulation centring ring is set between the endoporus of insulator lower end and the conducting rod.
Conducting rod is connected with insulator by step, expands with heat and contract with cold to sealing the height (being generally about 4cm) that influential conducting rod length only equals step, and therefore, variations in temperature can be ignored to its influence, and sealing reliability improves greatly.The insulation centring ring prevents that conducting rod from radially going here and there, increased simultaneously part in the sleeve pipe oil along the face insulation distance, make its electric property more safe and reliable.This structure is suitable for the level installation because fixedly step and the binding post of conducting rod are apart from tighter, and therefore, the bending strength of sleeve pipe is very high.
The structure that above-mentioned conducting rod is connected with step is: the nut that ring washer is set on conducting rod and is mated, nut, ring washer contact with the upper and lower end face of step respectively.
The inside of above-mentioned conducting rod is hollow hollow conducting rod.Hollow conducting rod material is fully used, and has alleviated the weight of product, and simultaneously, heat dispersion is also better, and the sleeve pipe temperature rise is relative also lower.
Description of drawings
Fig. 1 is the structural representation of existing sleeve pipe.
Fig. 2 is a structural representation of the present utility model.
Fig. 3 is the enlarged diagram of the conducting rod parts among Fig. 2.
Fig. 4 is a partial enlarged drawing among Fig. 2.
Embodiment
Below with regard to an embodiment to this novel being elaborated.
Transformer true procelain sleeve pipe shown in Fig. 2-4 comprises the conducting rod parts 31, the insulator 21 that comprise hollow conducting rod 20, and flange 22 is connected the insulator outside, and there is the step 30 that radially extends to its axis the upper end of insulator.Pass in the hole that hollow conducting rod 20 is opened from the step, its structure that is connected with step 30 is: on conducting rod, be provided with ring washer 19 and with hollow conducting rod nut engaged 13, two trim rings 14,16 are set between nut 13 and step upper surface, be provided with between trim ring 16 and the step upper surface between sealing ring 17, trim ring 14 and the hollow conducting rod sealing ring 15 is set, between ring washer 19 and the step lower surface buffer gasket 18 is set.By nut and ring washer with the conducting rod axial location on step.Insulation centring ring 23 is set between the endoporus of insulator lower end and the conducting rod, prevents that conducting rod from radially going here and there.
Conducting rod parts 31 by silently 24, copper tube (hollow conducting rod) 20 and oily middle connecting terminal 26 form, and a venting plug cock 11 and O grommet type seal circle 12 are arranged in the top.
In the copper tube lower end one section internal thread is arranged, one section external screw thread is arranged on the oily middle connecting terminal, terminal in the oil is connected with conducting rod, and then weld with the silver-bearing copper weldering by screw thread.Top silently adopts silver-bearing copper weldering welding to be welded into itself and copper tube as a whole.Fig. 3 mesopore 32 is venting plug cock hole, sleeve pipe top; Inside pipe casing air vent 33 is opened the conducting rod side-walls of below back-up ring 19 (peak of inside pipe casing), with the copper tube internal communication.Oil through 34,35 can communicate with copper tube inside at the sidewall of conducting rod bottom, can make copper pipe inside be full of oil by oil through, is convenient to its heat radiation, and in addition, the cleaning inside of also being convenient to hollow conducting rod is handled.The use of hollow conducting rod, material is fully used, and has alleviated the weight of product, and simultaneously, heat dispersion is also better, and the sleeve pipe temperature rise is relative also lower.
At the step 30 high 4cm at the top of insulator, back-up ring 19 compresses sealing ring 15,17 by fastening upper end nut in the lower end of step.An insulation centring ring 23 is arranged at the bottom, prevents that conducting rod from radially going here and there, increased simultaneously part in the sleeve pipe oil along the face insulation distance, make its electric property more safe and reliable.This structure is expanded with heat and contract with cold to sealing the long only 4cm of influential conducting rod, and therefore, variations in temperature can be ignored to its influence, and sealing reliability improves greatly.Because back-up ring and binding post distance are tighter, therefore, the bending strength of sleeve pipe is very high, is suitable for level and installs.
Compare with Low Voltage Pure porcelain bushing shell in the past, that this utility model not only has is in light weight, temperature rise is low, sealing Reliably, the high plurality of advantages of intensity; Simultaneously, because material is fully used, production cost also has one Decide the reduction of degree, directly reduced user's use cost, therefore, in main raw material(s)-copper price In the situation of Continued, this utility model also has certain economy.
Claims (6)
1. transformer true procelain sleeve pipe, comprise the conducting rod parts, the insulator that comprise conducting rod, it is characterized in that: there is the step that radially extends to its axis the upper end of insulator, pass in the hole that conducting rod is opened from the step and be connected, the insulation centring ring is set between the endoporus of insulator lower end and the conducting rod with step.
2. transformer true procelain sleeve pipe according to claim 1, it is characterized in that: the structure that conducting rod is connected with step is: the nut that ring washer is set on conducting rod and is mated, nut, ring washer contact with the upper and lower end face of step respectively.
3. transformer true procelain sleeve pipe according to claim 2, it is characterized in that: between ring washer and step lower surface, buffer gasket is set, between nut and step upper surface, trim ring is set, between the endoporus and conducting rod of trim ring, trim ring is provided with sealing ring respectively between the step upper surface that is in contact with it.
4. according to claim 1,2 or 3 described transformer true procelain sleeve pipes, it is characterized in that: the inside of conducting rod is hollow hollow conducting rod.
5. transformer true procelain sleeve pipe according to claim 4, it is characterized in that: the sidewall of conducting rod bottom has the oil through that communicates with its inside.
6. transformer true procelain sleeve pipe according to claim 4 is characterized in that: the conducting rod side-walls below step has the air vent that communicates with its inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201318110U CN201130592Y (en) | 2007-12-20 | 2007-12-20 | Transformer pure porcelain casing tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201318110U CN201130592Y (en) | 2007-12-20 | 2007-12-20 | Transformer pure porcelain casing tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201130592Y true CN201130592Y (en) | 2008-10-08 |
Family
ID=40018458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201318110U Expired - Fee Related CN201130592Y (en) | 2007-12-20 | 2007-12-20 | Transformer pure porcelain casing tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201130592Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103295736A (en) * | 2013-06-27 | 2013-09-11 | 特变电工沈阳变压器集团有限公司 | Labyrinth oil circulation exchange structure for insulating-gas inflated direct-current bushing |
| CN108806951A (en) * | 2018-07-18 | 2018-11-13 | 湖州新得意特种电磁线有限公司 | Transformer insulated device |
| CN109786082A (en) * | 2019-04-01 | 2019-05-21 | 江苏神马电力股份有限公司 | Bushing shell for transformer |
| CN113539643A (en) * | 2020-04-20 | 2021-10-22 | 江苏金安电气有限公司 | Transformer bushing and manufacturing method thereof |
-
2007
- 2007-12-20 CN CNU2007201318110U patent/CN201130592Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103295736A (en) * | 2013-06-27 | 2013-09-11 | 特变电工沈阳变压器集团有限公司 | Labyrinth oil circulation exchange structure for insulating-gas inflated direct-current bushing |
| CN103295736B (en) * | 2013-06-27 | 2016-06-29 | 沈阳和新套管有限公司 | Fill insulating gas DC bushing labyrinth type oil circulation switching fabric |
| CN108806951A (en) * | 2018-07-18 | 2018-11-13 | 湖州新得意特种电磁线有限公司 | Transformer insulated device |
| CN109786082A (en) * | 2019-04-01 | 2019-05-21 | 江苏神马电力股份有限公司 | Bushing shell for transformer |
| CN113539643A (en) * | 2020-04-20 | 2021-10-22 | 江苏金安电气有限公司 | Transformer bushing and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Zhida High-Voltage Electric Co., Ltd. Assignor: Nanjing Zhida Electric Co., Ltd. Contract record no.: 2011320000410 Denomination of utility model: Transformer pure porcelain casing tube Granted publication date: 20081008 License type: Exclusive License Record date: 20110325 |
|
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Jiangsu Zhida High-Voltage Electric Co., Ltd. Assignor: Nanjing Zhida Electric Co., Ltd. Contract record no.: 2011320000410 Date of cancellation: 20111220 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081008 Termination date: 20151220 |
|
| EXPY | Termination of patent right or utility model |