CN204117791U - A kind of current carrying terminals structure of bushing shell for transformer - Google Patents
A kind of current carrying terminals structure of bushing shell for transformer Download PDFInfo
- Publication number
- CN204117791U CN204117791U CN201420600295.1U CN201420600295U CN204117791U CN 204117791 U CN204117791 U CN 204117791U CN 201420600295 U CN201420600295 U CN 201420600295U CN 204117791 U CN204117791 U CN 204117791U
- Authority
- CN
- China
- Prior art keywords
- mount pad
- current carrying
- adapter sleeve
- transformer
- carrying terminals
- 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 - Lifetime
Links
- 238000003466 welding Methods 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052802 copper Inorganic materials 0.000 claims description 11
- 239000010949 copper Substances 0.000 claims description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 239000004020 conductor Substances 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 235000010210 aluminium Nutrition 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- 239000004411 aluminium Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000012913 prioritisation Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Abstract
The utility model provides a kind of current carrying terminals structure of bushing shell for transformer, comprise the terminal block, adapter sleeve and the mount pad that connect successively, mount pad is bolted on cannula tip, the inwall being positioned at the adapter sleeve at mount pad top offers circumferentially around V-type groove, in V-type groove, watchband-shaped contactor is installed, the pigtail splice of sleeve pipe stretches in mount pad, and pigtail splice and adapter sleeve are contacted by watchband-shaped contactor and connect; Current carrying terminals of the present utility model is directly contacted by watchband-shaped contactor with pigtail splice and connects, and the structure not adopting former current carrying terminals to be connected with pigtail splice by conductive seal head, avoids inside and outside portion conductor joint heating fault, safe and reliable.
Description
Technical field
The utility model belongs to electric power electric field, relates to a kind of bushing shell for transformer structure, particularly a kind of current carrying terminals structure of bushing shell for transformer.
Background technology
High voltage transformer bushings is mainly used in power transformer, as introduce or draw transformer high, medium and low voltage side electric current current－carrying conductor and insulating effect is risen to oil tank of transformer shell.Along with developing rapidly of China's economy, the continuous expansion of electrical network scale, need a large amount of bushings shell for transformer to meet the needs of the supporting development of power equipment, and current carrying terminals is as the important component part of bushing shell for transformer, its demand is very wide.
Traditional bushing shell for transformer current carrying terminals is connected with conductive seal head by screw thread or bolt, and conductive seal head is connected with pigtail splice by screw thread again, easily causes head to generate heat, and causes high temperature fault.
Current casing joint heating generally can be divided into external lug fault and internal connection fault.
External lug fault is that this loose contact makes contact resistance increase, and also makes consumed power increase because conductive seal head (being commonly called as army cap) and terminal block bad connection cause external lug to generate heat, so joint temperature raises.High temperature causes contact-making surface to be oxidized quickening, and form layer oxide film gradually, contact resistance is increasing, and temperature is more and more higher.So repeatedly, form vicious circle, as found not in time, final result goes between exactly and blows, and causes the accident.Internal connection fault is generally that nipple loosens and causes, and nipple refers to being threaded of conductive head internal thread and Transformer Winding pigtail splice.Only by power of nature between thread, cannot ensure reliable contacts, if the tolerance fit be threaded is improper, contact resistance will increase, thus produce high temperature fault.
And the current carrying terminals structure of existing bushing shell for transformer is steel structure solid forging, weight is large, cost is high, poor universality, brings no small trouble to enterprise standardization production, cost control.The price of aluminum current is not enough 30% of copper, and density is only 30% of copper, is suitable as the making material of current carrying terminals.
Utility model content
The utility model, for overcoming prior art defect, provides the current carrying terminals structure of the simple bushing shell for transformer of a kind of structure, solves the problem that existing sleeve pipe current carrying contacts easily generates heat.
For achieving the above object, the utility model is taked as follows:
A kind of current carrying terminals structure of bushing shell for transformer, comprise the terminal block, adapter sleeve and the mount pad that connect successively, mount pad is bolted on cannula tip, the inwall being positioned at the adapter sleeve at mount pad top offers circumferentially around V-type groove, in V-type groove, watchband-shaped contactor is installed, the pigtail splice of sleeve pipe stretches in mount pad, and pigtail splice and adapter sleeve are contacted by watchband-shaped contactor and connect.
As further prioritization scheme, described terminal block and adapter sleeve adopt copper product to make, and terminal block and adapter sleeve adopt friction welding to be connected.
As further prioritization scheme, described terminal block adopts copper product to make, and mount pad adopts aluminum to make, and adapter sleeve and mount pad adopt friction welding to be connected.
As further prioritization scheme, the pigtail splice of described sleeve pipe is locked by setscrew nut and bushing electrode.
As further prioritization scheme, described terminal block surface is coated with silver or tin.
The adapter sleeve inwall of current carrying terminals of the present utility model offers circumferentially around V-type groove, in V-type groove, watchband-shaped contactor is installed, current carrying terminals is directly contacted by watchband-shaped contactor with pigtail splice and connects, the structure not adopting former current carrying terminals to be connected with pigtail splice by conductive seal head, avoids inside and outside portion conductor joint heating fault;
Further, mount pad adopts constructed of aluminium, can reduce weight, reduce costs, and terminal block, adapter sleeve adopt steel structure, ensures that current-carrying performance is constant, and improves versatility and interchangeability.Terminal block and adapter sleeve, mount pad adopt friction welding to form class and forge state solid diffusivity.Weld heat-affected zone relative narrower, the defect such as flawless, pore and contraction in weld seam, weld strength reaches and basis material equal strength, and is conducive to the improvement of operating environment, decreasing pollution, and manufacturing cost is relatively low.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the syndeton schematic diagram of the utility model current carrying terminals and sleeve pipe;
In figure: 1. terminal block 2. adapter sleeve 3. mount pad 4.V type groove 5. watchband-shaped contactor 6. setscrew nut 7. pigtail splice.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further details:
As depicted in figs. 1 and 2, the structure of bushing shell for transformer current carrying terminals of the present utility model comprises terminal block 1, adapter sleeve 2, mount pad 3, adapter sleeve inwall offers circumferentially around V-type groove 4, watchband-shaped contactor 5 is installed in V-type groove 4, the pigtail splice 7 of sleeve pipe stretches in mount pad 3, can realize current carrying terminals to be directly connected by watchband-shaped contactor 5 with pigtail splice 7, pigtail splice 7 is locked by setscrew nut 6 and bushing electrode, avoids thread contact unreliable and generates heat.
Current carrying terminals is directly connected with pigtail splice, avoids former current carrying terminals to be connected with pigtail splice by conductive seal head cleverly, thus eliminates head high temperature hidden danger.
Adapter sleeve 2 and terminal block 1 are steel structures, and mount pad 3 is constructed of aluminiums, and current carrying terminals part aluminium replaces copper material, greatly can reduce weight, improve versatility, reduce costs.
Adapter sleeve 2 and terminal block 1, mount pad 3 form class by friction welding and forge state solid diffusivity, adapter sleeve and terminal block, mount pad friction welding form class and forge state solid diffusivity, weld strength is equal with matrix, copper material is replaced to realize current carrying terminals part aluminium, ensure that machinery, current-carrying performance are constant, reduce weight, improve versatility, reduce costs.
Described terminal block is silver-plated or zinc-plated at postwelding, improves conductive capability, reduces resistance, reduces power consumption.
This bushing shell for transformer current carrying terminals preparation method is:
1, adapter sleeve and terminal block adopt steel structure, ensure current-carrying performance;
2, adapter sleeve is provided with V-type groove, reasonable computation V-type groove size, ensures that adapter sleeve and pigtail splice are by watchband-shaped contactor reliable contacts, and with setscrew nut for tight pigtail splice.
3, mount pad adopts constructed of aluminium, reduces weight, reduces costs;
4, terminal block and adapter sleeve form class by friction welding and forge state solid diffusivity;
5, adapter sleeve and mount pad form class by friction welding and forge state solid diffusivity;
6, terminal block is silver-plated or zinc-plated at postwelding.
Above embodiment only for illustration of the utility model, but not for limiting the utility model.
Current carrying terminals part adopts aluminium to replace copper material, greatly reduces costs, alleviates the situation of Copper Product in China dependence on import, and can produce huge economic benefit and social benefit.Adapter sleeve and terminal block, mount pad form class by friction welding and forge state solid diffusivity, and adapter sleeve and terminal block are steel structures, and mount pad is constructed of aluminium.Weld strength and basis material equal strength, friction welding high-quality, efficient, energy-conservation, pollution-free, and achieve the welding of copper Al dissimilar materials.
Claims (5)
1. the current carrying terminals structure of a bushing shell for transformer, it is characterized in that: comprise the terminal block (1) connected successively, adapter sleeve (2) and mount pad (3), mount pad (3) is bolted on cannula tip, the inwall being positioned at the adapter sleeve (2) at mount pad (3) top offers circumferentially around V-type groove (4), watchband-shaped contactor (5) is installed in V-type groove (4), the pigtail splice (7) of sleeve pipe stretches in mount pad (3), pigtail splice (7) and adapter sleeve (2) are contacted by watchband-shaped contactor (5) and connect.
2. the current carrying terminals structure of bushing shell for transformer as claimed in claim 1, it is characterized in that: described terminal block (1) and adapter sleeve (2) adopt copper product to make, and terminal block (1) adopts friction welding to be connected with adapter sleeve (2).
3. the current carrying terminals structure of bushing shell for transformer as claimed in claim 1, it is characterized in that: described terminal block (1) adopts copper product to make, mount pad (3) adopts aluminum to make, and adapter sleeve (2) adopts friction welding to be connected with mount pad (3).
4. the current carrying terminals structure of the bushing shell for transformer as described in any one of claim 1-3, is characterized in that: the pigtail splice (7) of described sleeve pipe is locked by setscrew nut (6) and bushing electrode.
5. the current carrying terminals structure of the bushing shell for transformer as described in any one of claim 1-3, is characterized in that: described terminal block (1) surface is coated with silver or tin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420600295.1U CN204117791U (en) | 2014-10-16 | 2014-10-16 | A kind of current carrying terminals structure of bushing shell for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420600295.1U CN204117791U (en) | 2014-10-16 | 2014-10-16 | A kind of current carrying terminals structure of bushing shell for transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204117791U true CN204117791U (en) | 2015-01-21 |
Family
ID=52335080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420600295.1U Expired - Lifetime CN204117791U (en) | 2014-10-16 | 2014-10-16 | A kind of current carrying terminals structure of bushing shell for transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204117791U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654965A (en) * | 2016-11-29 | 2017-05-10 | 福建中能电气有限公司 | Gas-insulated switch sleeve and switch box |
| CN110444378A (en) * | 2019-07-16 | 2019-11-12 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of exchange cannula structure |
| CN111540582A (en) * | 2020-06-08 | 2020-08-14 | 保定天威保变电气股份有限公司 | Fixed valve side lead wire fixing structure of faceplate in lead tube for flexible transformer |
-
2014
- 2014-10-16 CN CN201420600295.1U patent/CN204117791U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654965A (en) * | 2016-11-29 | 2017-05-10 | 福建中能电气有限公司 | Gas-insulated switch sleeve and switch box |
| CN110444378A (en) * | 2019-07-16 | 2019-11-12 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of exchange cannula structure |
| CN111540582A (en) * | 2020-06-08 | 2020-08-14 | 保定天威保变电气股份有限公司 | Fixed valve side lead wire fixing structure of faceplate in lead tube for flexible transformer |
| CN111540582B (en) * | 2020-06-08 | 2024-05-10 | 保定天威保变电气股份有限公司 | Fixed valve side lead wire fixed knot of disc chuck in lead tube for flexible transformer constructs |
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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: Xi'an Xidian High Pressure Sleeve Co., Ltd. Assignor: China XD Electronic Corporation Contract record no.: 2015610000058 Denomination of utility model: Carrier terminal structure of transformer bushing Granted publication date: 20150121 License type: Exclusive License Record date: 20150528 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160909 Address after: 710075 Shaanxi city of Xi'an Province Tang Hing Road No. 7 Patentee after: China XD Electronic Corporation Patentee after: Xi'an Xidian High Pressure Sleeve Co., Ltd. Address before: 710075 Shaanxi city of Xi'an Province Tang Hing Road No. 7 Patentee before: China XD Electronic Corporation |