CN101577172B - Stress cone type dry sleeve of transformer - Google Patents
Stress cone type dry sleeve of transformer Download PDFInfo
- Publication number
- CN101577172B CN101577172B CN2008100255537A CN200810025553A CN101577172B CN 101577172 B CN101577172 B CN 101577172B CN 2008100255537 A CN2008100255537 A CN 2008100255537A CN 200810025553 A CN200810025553 A CN 200810025553A CN 101577172 B CN101577172 B CN 101577172B
- Authority
- CN
- China
- Prior art keywords
- stress cone
- electric field
- full skirt
- insulator
- type dry
- 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
- 239000012212 insulator Substances 0.000 claims abstract description 28
- 230000005684 electric field Effects 0.000 claims abstract description 24
- 239000007787 solid Substances 0.000 claims abstract description 17
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 14
- 229920002379 silicone rubber Polymers 0.000 claims description 13
- 239000003822 epoxy resin Substances 0.000 claims description 10
- 229920000647 polyepoxide Polymers 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 239000004020 conductor Substances 0.000 claims description 8
- 239000004065 semiconductor Substances 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229920002943 EPDM rubber Polymers 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 230000035882 stress Effects 0.000 description 31
- 239000003921 oil Substances 0.000 description 12
- 229910052573 porcelain Inorganic materials 0.000 description 9
- 238000009434 installation Methods 0.000 description 7
- 238000009413 insulation Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000002431 foraging effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Images
Landscapes
- Insulators (AREA)
Abstract
The invention relates to a high-pressure or ultra-high pressure transformer part, in particular to a stress type dry sleeve of a transformer, comprising an umbrella skirt (3), a lower flange (6), a conductive rod (1), an electric field control element (5) and an insulator (4). The electric field control element (5) is sleeved outside the conductive rod (1), and the umbrella skirt (3) is arranged outside the electric field control element (5); the insulator (4) is arranged between the umbrella skirt (3) and the conductive rod (1), and the upper end of the conductive rod (1) extends out of the upper end of the umbrella skirt (3); the insulator (4) is a solid insulator, and the electric field control element (5) is a bidirectional stress cone which is formed by connecting two unidirectional stress cones and is in an integral structure by using the bottoms of the two unidirectional stress cones as a joint surface to be combined into a whole. The invention has the advantages of simple structure, low cost, light weight, good safety, convenient manufacture and mounting, good product quality and wide range of application.
Description
Technical field
The present invention relates to a kind of high pressure, EHV transformer parts, particularly a kind of stress cone type dry sleeve of transformer.
Background technology
At present, what the oil-immersed power transformer sleeve pipe generally adopted is porcelain bushing, and porcelain bushing is outward a full skirt, and the wrapped electric capacity awl of inner conductor is full of insulant in the sleeve pipe then, and insulant is a fluid insulation oil.Mainly there is following defective in this bushing shell for transformer: (1) is when system breaks down, insulating oil heating expansion in the porcelain bushing inner chamber can set off an explosion, hurt sb.'s feelings easily and damage miscellaneous equipment, the insulating oil formation fire that burns easily, even the oil firing that causes transformer inside explodes, make the paralysis of whole electric substation, the accident infringement is big especially; (2) irritated fluid insulation oil in the porcelain bushing, leaked, must use seal for preventing insulating oil, heating when insulating oil is owing to the transformer operation simultaneously makes seal easier to be aging, and useful life is short, easy seepage oil, insulating oil is also apt to deteriorate, and this all greatly reduces the electric property of equipment; (3) the electric field controls element is a requisite important spare part in the porcelain bushing, porcelain bushing internal electric field control element generally all adopts electric capacity to bore and controls the sleeve pipe electric field, adopt the sleeve structure (as shown in Figure 6) of electric capacity awl, comprise conducting rod 1, full skirt 3, insulant 4, electric field controls element 5, lower flange 6, seal 8, sleeve pipe 9, the electric capacity awl is to form through multi-lay winding insulating paper 4 ' and metallic film 5 ' in conducting rod 1 outside, electric capacity awl complex manufacturing technology, the skilled worker is required height, deviation by artificial generation is big, and require high especially to production environment, dust in the environment and moisture all can reduce the insulation property of product greatly, bring potential safety hazard to product, product quality is difficult for guaranteeing; At present, also has a kind of electric field controls element pure stress awl, pure stress wimble structure (as Fig. 3, shown in Figure 5), the pure stress awl comprises inner wire 5-1 ' and insulator 5-2 ', inner wire 5-1 ' is arranged at insulator 5-2 ' inside, and the pure stress wimble structure is simple, and fabrication and installation are easy, but the pure stress awl scope of application is narrow, is mainly used in cable termination.People are seeking a kind of new casing that can remedy above-mentioned defective always, but this problem long-term indeterminable technical barrier that always is people.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of simple in structure, cost is low, manufacturing is easy for installation, fail safe is good, the stress cone type dry sleeve of transformer of good product performance.
Realize that the above-mentioned purpose technical scheme is: a kind of stress cone type dry sleeve of transformer, comprise full skirt, lower flange, conducting rod, the electric field controls element, insulant, conducting rod is with the electric field controls element outward, the electric field controls element is outside equipped with full skirt, be provided with insulant between full skirt and the conducting rod, stretch out from the upper end of full skirt the upper end of conducting rod, described insulant is a solid insulator, described electric field controls element is a bidirectional stress cone, bidirectional stress cone is formed by connecting by two pure stress awls, and be to be the overall structure that faying face is combined as a whole with these two pure stresses awl bottom surfaces, comprise inner wire and insulator, inner wire is arranged at insulator inside.
Further, described full skirt is the silicon rubber full skirt, and silicon rubber full skirt and solid insulator join.
Further, described solid insulator is an epoxy resin.
Further, described inner wire is conductor material or semi-conducting material.
Further, described inner wire is conductor material aluminium or copper material.
Further, described inner wire is semi-conducting material silicon rubber or ethylene propylene diene rubber.
After adopting technique scheme, have a lot of benefits: (1) is simple in structure, cost is low, Product Safety is good.The present invention adopts solid insulator to replace fluid insulation oil, is convenient to transportation and installation; When system breaks down, be difficult for setting off an explosion and fire, the accident infringement is little, and fail safe is good; Seal is difficult for aging, long service life, and phenomenons such as seepage oil, deterioration of oil can not take place, and improved the electric property of equipment greatly, good product quality, performance is good; The present invention also can not use seal; (2) simple in structure, cost is low, manufacturing is easy for installation, good product quality.The bidirectional stress cone design that the present invention adopts is ingenious, and bidirectional stress cone is formed by connecting by two pure stress awls, and is to be the overall structure that faying face is combined as a whole with these two pure stress awl bottom surfaces, and is simple in structure.The shaping that is prefabricated in the factory during manufacturing, the on-the-spot installation do not need field fabrication, thereby makes and install very conveniently, and installation quality is reliable; And do not need to resemble the so complicated winding of electric capacity awl, greatly reduce the unstable product quality that causes because of human factor, with low cost, good product quality; (3) applied widely.The bidirectional stress cone that the present invention adopts is applicable to the occasion that the electric capacity awl is suitable for, be the desirable substitute products of electric capacity awl, and the occasion bidirectional stress cones such as solid insulator that the electric capacity awl can not be suitable for also can be suitable for, bidirectional stress cone does not have the electric capacity awl to require height to the requirement of production environment in use yet, thereby its scope of application is wider.The invention solves the long-term indeterminable technical barrier of people.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of electric field controls element spare 5 bidirectional stress cones of the present invention;
Fig. 3 is the structural representation of existing electric field controls element pure stress awl.
Fig. 4 is the section outer contour shape schematic diagram of inner wire spare 5-1 among Fig. 2;
Fig. 5 is the section outer contour shape schematic diagram of inner wire spare 5-1 ' among Fig. 3.
Fig. 6 is the structural representation of electric capacity bevel-type sleeve pipe in the prior art.
Embodiment
The present invention is further detailed explanation below in conjunction with drawings and Examples.
Embodiment one
As Fig. 1, Fig. 2, shown in Figure 4, a kind of stress cone type dry sleeve of transformer, comprise full skirt 3, upper flange 2, lower flange 6, conducting rod 1, electric field controls element 5, insulant 4, grading ring 7, full skirt 3 tops are set with upper flange 2, full skirt 3 bottoms are set with lower flange 6, the conducting rod 1 outer electric field controls element 5 that is with, electric field controls element 5 is outside equipped with full skirt 3, be provided with insulant 4 between full skirt 3 and the conducting rod 1, be provided with insulant 4 between full skirt 3 and the electric field controls element 5, insulant 4 is the epoxy resin solid insulator, grading ring 7 is arranged on the lower end of full skirt 3, and is connected with conducting rod 1 lower end, and stretch out from the upper end of full skirt 3 upper end of conducting rod 1, and by the upper end sealing of seal 8 with full skirt 3, described seal 8 is a sealing ring.Pure stress is bored its structural shape (as Fig. 3, shown in Figure 5), and the pure stress awl is prior art.The electric field controls element 5 that present embodiment adopts is a bidirectional stress cone, comprise inner wire 5-1 and insulator 5-2, inner wire 5-1 is arranged at insulator 5-2 inside, described bidirectional stress cone is made up of two identical pure stresses awls, and is that to bore bottom surface a faces with these two identical pure stresses be the overall structure that symmetrical faying face is combined as a whole.Inner wire 5-1 section outer contour is made up of a part of straight line and a part of curve, and curve is the hyperbola by many circular arc simulations.Described inner wire 5-1 adopts the conductor material aluminium to make.Described full skirt 3 is the silicon rubber full skirt, and silicon rubber full skirt and epoxy resin solid insulator join, and the silicon rubber full skirt is compounded in epoxy resin solid insulator outside.Present embodiment is changed traditional bushing shell for transformer structure of the prior art, do not need sleeve pipe, adopt the silicon rubber full skirt to replace traditional porcelain bushing, adopt silicon rubber full skirt and epoxy resin solid insulator to join, promptly do not have sleeve pipe between silicon rubber full skirt and the epoxy resin solid insulator.Novel structure, simple is convenient to transportation and installation; It is epoxy resin that present embodiment adopts solid insulator, and epoxy resin has self-extinguishment, can not cause fire, and fail safe is better; Need not sleeve pipe, simplified production technology widely, saved production cost.
Embodiment two
As Fig. 1, Fig. 2, shown in Figure 4, basic identical with embodiment one, different is that described inner wire 5-1 adopts the conductor material copper material to make.
Embodiment three
As Fig. 1, Fig. 2, shown in Figure 4, basic identical with embodiment one, different is that described inner wire 5-1 adopts semi-conducting material silicon rubber to make.
Embodiment four
As Fig. 1, Fig. 2, shown in Figure 4, basic identical with embodiment one, different is that described inner wire 5-1 adopts the semi-conducting material ethylene propylene diene rubber to make.
In addition to the implementation, inner wire 5-1 of the present invention also can adopt other conductor or semi-conducting material manufacturing; Two pure stress awls that connect into bidirectional stress cone can be identical as above-mentioned embodiment, also can be inequality; The present invention also can adopt porcelain shell for transformer pipe of the prior art, and porcelain bushing is outward a umbrella skirt construction; Solid insulator also can adopt other solid insulator except that epoxy resin.
The invention is not restricted to the foregoing description, the technical scheme that all employings are equal to replacement or equivalence replacement formation all belongs to the scope of protection of present invention.
Claims (6)
1. stress cone type dry sleeve of transformer, comprise full skirt (3), lower flange (6), conducting rod (1), electric field controls element (5), insulant (4), the outer electric field controls element (5) that is with of conducting rod (1), electric field controls element (5) is outside equipped with full skirt (3), be provided with insulant (4) between full skirt (3) and the conducting rod (1), stretch out from the upper end of full skirt (3) upper end of conducting rod (1), it is characterized in that: described insulant (4) is a solid insulator, described electric field controls element (5) is a bidirectional stress cone, bidirectional stress cone is formed by connecting by two pure stress awls, and be to be the overall structure that faying face is combined as a whole with these two pure stresses awl bottom surfaces, comprise inner wire (5-1) and insulator (5-2), inner wire (5-1) is arranged at insulator (5-2) inside.
2. stress cone type dry sleeve of transformer according to claim 1 is characterized in that: described full skirt (3) is the silicon rubber full skirt, and silicon rubber full skirt and solid insulator join.
3. stress cone type dry sleeve of transformer according to claim 1 is characterized in that: described solid insulator is an epoxy resin.
4. stress cone type dry sleeve of transformer according to claim 1 is characterized in that: described inner wire (5-1) is conductor material or semi-conducting material.
5. stress cone type dry sleeve of transformer according to claim 4 is characterized in that: described inner wire (5-1) is conductor material aluminium or copper material.
6. stress cone type dry sleeve of transformer according to claim 4 is characterized in that: described inner wire (1) is semi-conducting material silicon rubber or ethylene propylene diene rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100255537A CN101577172B (en) | 2008-05-08 | 2008-05-08 | Stress cone type dry sleeve of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100255537A CN101577172B (en) | 2008-05-08 | 2008-05-08 | Stress cone type dry sleeve of transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101577172A CN101577172A (en) | 2009-11-11 |
| CN101577172B true CN101577172B (en) | 2011-08-17 |
Family
ID=41272069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100255537A Expired - Fee Related CN101577172B (en) | 2008-05-08 | 2008-05-08 | Stress cone type dry sleeve of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101577172B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102254669A (en) * | 2011-01-19 | 2011-11-23 | 江苏宝亨新电气有限公司 | Anti-oil leakage dry transformer bushing |
| CN110197763A (en) * | 2019-05-14 | 2019-09-03 | 恒源利通电气大厂有限公司 | A kind of outdoor three-phase integral current mutual inductor with stress cone and transistor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1574533A (en) * | 2003-06-19 | 2005-02-02 | 古河电气工业株式会社 | Cold-shrinkable type rubber insulation sleeve and method of manufacturing |
| CN201018250Y (en) * | 2006-03-21 | 2008-02-06 | 深圳市沃尔核材股份有限公司 | Novel cable accessory |
| CN201233801Y (en) * | 2008-05-08 | 2009-05-06 | 江苏安靠超高压电缆附件有限公司 | Dry sheath for stress cone type transformer |
-
2008
- 2008-05-08 CN CN2008100255537A patent/CN101577172B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1574533A (en) * | 2003-06-19 | 2005-02-02 | 古河电气工业株式会社 | Cold-shrinkable type rubber insulation sleeve and method of manufacturing |
| CN201018250Y (en) * | 2006-03-21 | 2008-02-06 | 深圳市沃尔核材股份有限公司 | Novel cable accessory |
| CN201233801Y (en) * | 2008-05-08 | 2009-05-06 | 江苏安靠超高压电缆附件有限公司 | Dry sheath for stress cone type transformer |
Non-Patent Citations (1)
| Title |
|---|
| JP平11-332081A 1999.11.30 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101577172A (en) | 2009-11-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203941765U (en) | A kind of condenser type dry sleeve | |
| CN203481774U (en) | Cable joint | |
| CN209216733U (en) | 2000kV oil-impregnated paper condenser type transformer bushing | |
| CN101650994A (en) | suspension insulator | |
| CN101577172B (en) | Stress cone type dry sleeve of transformer | |
| CN201498284U (en) | Ultra-high pressure GIS wire inlet and outlet composite insulating sleeve | |
| CN101329935B (en) | External insulation casing pipe for 500 kv sulfur hexafluoride current mutual inductor | |
| CN201233801Y (en) | Dry sheath for stress cone type transformer | |
| CN101807458B (en) | Epoxy glass fiber lining porcelain composite hollow insulator for high-voltage electrical appliances | |
| CN103187686A (en) | Extra-high-pressure wall bushing | |
| CN101645337B (en) | Compound insulating sleeve of extra-high voltage GIS incoming and outgoing line | |
| CN105261418B (en) | A kind of the third high-voltage insulating tube of three-layer co-extruded second bus | |
| CN209249262U (en) | A kind of transformer bushing | |
| CN109524218B (en) | Explosion-proof sleeve with buffer air chamber for gas-insulated transformer | |
| CN201629188U (en) | Porcelain Composite Hollow Insulator with Epoxy Glass Fiber Bushing for High Voltage Apparatus | |
| CN203193126U (en) | Extra high tension wall bushing | |
| CN102354569A (en) | Diameter-expanding cable | |
| CN101877258B (en) | Disc type suspension double-insulation composite insulator | |
| CN204696630U (en) | 110kV dry type silicone rubber for cable terminal | |
| CN1235235C (en) | Capacity uniform voltage type stick shape suspending composite insulator | |
| CN209199698U (en) | Direct current equalizing resistance device | |
| CN202178539U (en) | Dry type DC wall bushing | |
| CN218100936U (en) | Composite insulation capacitance type transformer bushing | |
| CN206585297U (en) | A kind of tube type bus connects terminal plug | |
| CN201234114Y (en) | Epoxy seat for electric cable accessory |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: JIANGSU ANKURA SMART TRANSMISSION ENGINEERING TECH Free format text: FORMER NAME: JIANGSU ANKURA EHV CABLE ACCESSORIES CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 213333 Tianmu Lake Industrial Park, Liyang Economic Development Zone, Jiangsu, China Patentee after: JIANGSU ANKURA SMART TRANSMISSION ENGINEERING TECHNOLOGY Co.,Ltd. Address before: 213333 Tianmu Lake Industrial Park, Liyang Economic Development Zone, Jiangsu, China Patentee before: Jiangsu Ankao Extra High Voltage Cable & Accessories Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |