CN101814347A - Insulating sleeve for oil filling - Google Patents
Insulating sleeve for oil filling Download PDFInfo
- Publication number
- CN101814347A CN101814347A CN201010113558A CN201010113558A CN101814347A CN 101814347 A CN101814347 A CN 101814347A CN 201010113558 A CN201010113558 A CN 201010113558A CN 201010113558 A CN201010113558 A CN 201010113558A CN 101814347 A CN101814347 A CN 101814347A
- Authority
- CN
- China
- Prior art keywords
- center conductor
- insulating sleeve
- conductor
- trunk
- oil
- 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.)
- Granted
Links
Images
Landscapes
- Insulators (AREA)
Abstract
This invention provides an insulating sleeve adopting a centre conductor that is made of aluminium alloy with excellent mechanical strength and low cost, at the same time, avoiding the problem of the contact resistance between the end part of the centre conductor and the jointing part of other energized terminals being increased due to the oxide layer generated on the surface of the aluminium alloy. Said insulating sleeve for oil filling includes: a porcelain sleeve in gas side, a porcelain sleeve in oil side, and an insulating sleeve body located between two porcelain sleeves for installing metal flange attachment, a centre conductor coming through said insulating sleeve body, a metal piece under the down end of said insulating sleeve being screwed with the centre conductor for connecting with the energized terminals. Where, said centre conductor includes: a centre conductor trunk covered by the oil filling insulating sleeve in full length, a top conductor at upper end of the high voltage side of said centre conductor trunk being screw by thread for connecting with the energized terminals. Said top conductor for connecting with the energized terminals and bellow metal piece for connecting with the energized terminals are made of Cu or Cu series metal. Said centre conductor trunk is made of aluminium alloy components.
Description
Technical field
The present invention relates to oil insulator.
Background technology
The insulating sleeve of supporting high-voltage power line etc. of being used to insulate is provided with the insulator of porcelain between ground connection side metalwork and high-pressure side metalwork, its structure is, when heart portion connects center conductor therein, enclose insulating gas or insulating oil to guarantee insulating properties in inside.
Fig. 1 shows that the application's applicant is disclosed, inclosure has the cross-sectional illustration figure (patent documentation 1) of insulating oil with the insulating sleeve of the center of guaranteeing insulating properties fastening (セ Application タ one Network ラ Application プ, center clamp) structure in inside.Among Fig. 1,1 is the gas side insulator, and 2 is oily side insulator, and 3 for to be positioned at these central mounting flange metal-wares, and 4 is center conductor, and 5 is the oil-paper condenser core of center conductor 4 peripheries.Be filled with insulating oil 6 in the inside of insulating sleeve body.7 is the expanding chamber of insulating sleeve head, applies tension force by the center of the portion of setting within it is fastening with 8 pairs of center conductors 4 of spring, becomes the center fastening structure that gas side insulator 1, oily side insulator 2 and mounting flange metal-ware 3 etc. are combined closely.Upper end at center conductor 4 connects top terminal 9, and the lower end connects terminal in the oil, switches on.
Here, the material requirement to center conductor 4 is to have suitable conductance and mechanical strength.From two such viewpoints, generally adopt copper or aluminum or aluminum alloy as the industrial materials of center conductor 4.Special in the big insulating sleeve of rated current, the preferred copper center conductor that adopts with high conductivity.And on the other hand, in the insulating sleeve of special requirement mechanical strength, preferably adopt the center conductor of aluminium alloy system.Further, generally be preferably aluminium alloy system from the viewpoint of economy.
But, thereby insulating sleeve need be suppressed at the electric potential gradient of inside the insulation that suitable value is not destroyed its inside.Insulating sleeve for the high grade of electric pressure is controlled in the suitable scope for the electric potential gradient with the center conductor surface, and the diameter of center conductor needs rugosity to a certain degree.If the increasing center conductor diameter can automatically increase the electric current energising ability that flows through it.But generally great majority are not need so high energising specified in the high insulating sleeve of electric pressure, from the viewpoint of electric current energising ability, not only use copper, and much use aluminium alloy.
If comprehensive above-mentioned viewpoint is not only used copper from the viewpoint of electric current energising ability, and much used aluminium alloy, further because the intensity height of aluminium alloy, price is also cheap, we can say that therefore the advantage of center conductor of the aluminium alloy system of employing is many.
But aluminium alloy forms the such character of oxide-film owing to having in the very short time on the surface, at once, begins oxidation rapidly after grinding aluminum alloy surface, forms the oxide-film that approaches.This oxide-film partly is the thinness that can not see degree with eyes, though also have energising, contact resistance uprises, and reaches the state that can not adapt to big electric current energising.
If the end of the center conductor 4 of the aluminium alloy system of state and other terminal 9,10 join and begin energising like this, the increase slowly of the oxide thickness of aluminium alloy face, become the visual albefaction film that can know, contact resistance is increased, produce high temperature, the danger that will cause fire is soon arranged.In order to avoid this danger, be necessary to carry out particular processing with respect to the connecting portion of the end of the center conductor 4 of the above-mentioned aluminium alloy system of joining with other terminal 9,10.After this processing is the above-mentioned connecting portion of center conductor of meticulous grinding aluminium alloy system, be not coated with to careless omission thin special anti-oxidation grease immediately equably, the other side's terminal that closes rapidly then carries out fastening, afterwards, and further with making moisture or oxygen not enter this connecting portion around the gap filler sealing.If this surface treatment operations is incomplete, will cause fire incident, therefore, require complete operation.But, this operation is owing to be to need skilled operation, therefore, the operator need carry out sufficient educational practice in advance, owing to can not often guarantee experienced operators, the angle that the danger of the fire incident that oxide-film causes that is formed by the above-mentioned connecting portion at aluminium alloy system center conductor is avoided is set out, and is problematic.In addition, particularly high-pressure side, the top terminal of center conductor 4 and top terminal 9 is connected owing to be that attended operation with lead has relation, having much is that carry out at scene in electric substation, and the such problem of above-mentioned processing quality management that is difficult to carry out completely connecting portion is arranged.
In addition, it is low that the center conductor of aluminium alloy system and center conductor made of copper are compared fusing point, when having temperature to rise, and the rate of descent of the mechanical strength significant tendency that becomes.Therefore, even do not reach the situation of the high temperature that above-mentioned such fire incident takes place, when high temperature (above 200 ℃) to a certain degree, the mechanical load that above-mentioned connecting portion produced because of aluminium alloy system center conductor, mechanically destruction center's conductor has the problem that causes the such danger of the accident of having a power failure on a large scale.
Patent documentation 1: Japanese kokai publication hei 10-52314 communique
Summary of the invention
The object of the present invention is to provide and a kind ofly can avoid the technology that becomes the overheat accident of problem when adopting aluminium alloy system center conductor with mechanical strength height and the such advantage of low price.Concrete provide a kind of and can avoid the insulating sleeve of problem of contact resistance increase that the oxide-film that forms in aluminum alloy surface makes the connecting portion of the end of aluminium alloy system center conductor and other energising terminal.
For solving the oil insulator of the present invention that above-mentioned problem is finished, it is characterized in that, this oil insulator has the insulating sleeve body, the center conductor that connects this insulating sleeve body is used the lower metal part with being connected with energising terminal that center conductor is screwed by screw thread in the bottom of this insulating sleeve body, wherein, described insulating sleeve body comprises the gas side insulator, oil side insulator and the mounting flange metal-ware between two insulators of gas side insulator and oily side insulator, this center conductor comprises that covering the center conductor trunk of total length by oil insulator is connected with energising terminal that upper end, high-pressure side at this center conductor trunk is screwed by screw thread and uses top conductor, it is that metal parts constitutes by copper or copper that this energising terminal connection is connected with the lower metal part with top conductor with the energising terminal, and this center conductor trunk is made of aluminium alloy part.
The present invention is by such structure, promptly the center conductor trunk by aluminium alloy system is that metal energising terminal is connected the center conductor that constitutes insulating sleeve with top conductor with copper or copper, further having copper or copper in the bottom of this insulating sleeve body is metal energising terminal connection lower metal part, kept the characteristic of mechanical strength than the center conductor of the more excellent such aluminium alloy system of copper, simultaneously, can avoid the problem that forms oxide-film at the connecting portion of aluminium alloy system center conductor and energising splicing ear.Promptly, the present invention is metal parts by the connecting portion with the energising splicing ear for copper or the copper that does not produce oxide-film formation problem, can be without masterful technique or the such means of quality management completely, just can prevent to form with the oxide-film of center conductor with the connecting portion of energising terminal, avoiding thing followed contact resistance increases and overheat accident, significantly improves the insulating sleeve attended operation.
According to technical scheme 2 described inventions, make the upper end, high-pressure side of center conductor trunk is connected the connecting portion that screws with the top conductor screw thread under the pasta of the insulating oil that is filled in oil insulator inside with the energising terminal, by having such structure, can emit the Joule heat that screw thread screws portion expeditiously, suppress the overheated of this part effectively.In addition, by making this connecting portion in insulating oil, can effectively avoid following problem: the center conductor trunk side in aluminium alloy system forms oxide-film, increases contact resistance and incident overheat accident.
According to technical scheme 3 described inventions, the screw thread portion of screwing that screws the upper end, high-pressure side of portion and center conductor trunk for the screw thread of the bottom that is positioned at center conductor applies tension force, by having such center fastening structure, can reduce the contact resistance that screw thread screws portion by the center fastening force.By reducing the contact resistance that screw thread screws portion, even the short circuit current by being produced by short circuit accident also can suppress the temperature rising that this screw thread screws portion.Thus, by technical scheme 3 described inventions,, also can effectively avoid by screw thread screwing the overheated of portion and the problem of the reduction of the mechanical strength that causes is incident fusing accident even adopt the situation of low-melting aluminium alloy system center conductor.
Description of drawings
Fig. 1 is the cross-sectional illustration figure of oil insulator in the past.
Fig. 2 is the cross-sectional illustration figure of oil insulator of the present invention.
Fig. 3 is that the center conductor trunk of Fig. 2 is connected the expansion key diagram that screws connecting portion with the screw thread of top conductor with the energising terminal.
Fig. 4 is that the center conductor trunk of Fig. 2 is connected the expansion key diagram that screws connecting portion with the screw thread of lower metal part with the energising terminal.
Fig. 5 is the cross-sectional illustration figure of the oil insulator of the present invention of other execution mode.
Fig. 6 is that the center conductor trunk of Fig. 5 is connected the expansion key diagram that screws connecting portion with the screw thread of top conductor with the energising terminal.
Symbol description
1 gas side insulator,
2 oily side insulators
3 mounting flange metal-wares
4 center conductors
41 center conductor trunks
The 41a bolt part
The 41b bolt part
The 41c screw thread screws portion
The 41d screw thread screws portion
41e is to head piece
42 energising terminals connect uses top conductor
The 42a bolt part
The 42b bolt part
42c digs portion
42d is to discharge orifice
43 energising terminals connect uses the lower metal part
5 oil-paper capacitor cores
6 insulating oils
7 expanding chambers
8 springs
9 top terminal
Terminal in 10 oil
11 nitrogen spaces
12 lids
13 binding nuts
14 tube connectors
14a upper bolt portion
14b lower bolt portion
14c is to discharge orifice
Embodiment
Below, show preferred implementation of the present invention.
Fig. 2 shows the cross-sectional illustration figure of oil insulator of the present invention.Among Fig. 2,1 is the gas side insulated tube, 2 is oily side insulator, 3 for being positioned at these central mounting flange metal-wares, 41 is the center conductor trunk, 42 is energising terminal connection top conductor, and 43 is that the lower metal part is used in the connection of energising terminal, and 5 is the oil-paper capacitor core of center conductor trunk 41 peripheries.The inside of insulating sleeve body is filled with insulating oil 6.7 is the expanding chamber of insulating sleeve head, by fastening connection of the center of portion's setting within it applying tension force, be the fastening structure in center of the gas side insulator 1 of combining closely, oily side insulator 2 and mounting flange metal-ware 3 etc. with top conductor 42 and center conductor trunk 41 with 8 pairs of energisings of spring terminal.The upper end that connects with top conductor 42 at the energising terminal connects top terminal 9, and the energising terminal connects with lower end metalwork 43 and connects terminal 10 in the oil, switches on.
At the oil-paper capacitor core 5 of reeling on every side of center conductor trunk 41, on one side it guarantees the insulation of center conductor trunk 41 and mounting flange 3, Yi Bian making along the face electric field of control gaseous side insulator 1 and oily side insulator 2 becomes even.In the slit of oil-paper capacitor core 5 and above-mentioned insulator 1,2, be full of insulating oil 6.The pasta of insulating oil 6 will arrive in the expanding chamber 7 always, and the top of pasta is nitrogen space 11.This nitrogen space 11 has as the variations in temperature that is accompanied by insulating oil 6, when carrying out thermal expansion, absorbs the effect of its cushion.Seal with lid 12 on the top in nitrogen space 11, and seal between the outside.In expanding chamber 7, there is the center fastening, is combined on binding nut 13 compressions that the energising terminal connects the 42a of upper bolt portion that uses top conductor 42 with spring 8.This compression stress is the upper surface of pushing gas side insulator 1 with by the bottom surface of expanding chamber 7, simultaneously, draws by center conductor trunk 41 and to carry the energising terminal and connect and to carry out work with the mode of lower metal part 43, the lower surface that pushes away oily insulator 2 on further.Its result makes gas insulator 1 be clamped in the lower surface of expanding chamber 7 and the upper surface of mounting flange 3 by this compression stress, and oily insulator 2 is clamped in the energising terminal and connects with the upper surface of lower metal part 43 and the lower surface of mounting flange 3.Bear compression stress like this by two insulators and be held,, stably keep insulating sleeve as assembling structural body by the frictional force of this part.The sealed pad clamping in interface between each parts becomes inner insulating oil not to the structure of external leakage.
Fig. 3 display centre conductor trunk 41 is connected the expansion key diagram that screws connecting portion with the screw thread of top conductor 42 with the energising terminal.The material of center conductor trunk 41 is an aluminium alloy, and the material that the energising terminal connects with top conductor 42 is that copper or copper are metal.Center conductor trunk 41 in the present embodiment be shaped as tubulose.Also can be for bar-shaped.Inner face at an upper portion thereof cuts out bolt part (recess) 41a.Center conductor trunk 41 does not extend to the top of insulating sleeve, have screw thread on the way and screw the 41c of portion, screw thread screws the 41c of portion and will connect bolt part 42b (protuberance) with top conductor 42 incisions at energising terminal made of copper and screw with above-mentioned bolt part (recess) 41a screw thread and be connected.
Fig. 4 display centre conductor trunk 41 is connected the expansion key diagram that screws connecting portion with the screw thread of lower metal part 43 with the energising terminal.Following end-grain cutting at center conductor trunk 41 has bolt part (recess) 41b, connects to have with the bolt part (protuberance) of lower metal part 43 incisions and above-mentioned bolt part (recess) 41b at the energising terminal to screw the screw thread that is connected by screw thread and screw the 41d of portion.The material employing bronze or the copper such as the brass or the casting in bronze divine force that created the universe that connect with lower metal part 43 as the energising terminal are metal.
As shown in Figure 3, Figure 4 the bottom of center conductor trunk 41 be provided with discharge orifice 41e connected inside and outside.In addition, the bottom setting that connects with top conductor 42 at the energising terminal digs the 42c of portion.Connect discharge orifice 42d from its inside to outside level fragrance.By these to discharge orifice 41e and 42d, insulating oil 6 can come in and go out center conductor trunk 41 inside and outside.The Joule heat that produces in center conductor trunk 41 during energising is passed to the oil of center conductor trunk 41 inboards, and this oil is owing to thermal expansion lightens, flows into the top, by discharge orifice 42d is flowed to the outside.Then, under the lateral by oil-paper capacitor core 5, from discharge orifice 41e being entered once more the inside of center conductor trunk 41.By such backflow, the heat of generation is discharged into the outside effectively.By the tubulose that is shaped as of center conductor trunk 41, can obtain by the caused exothermal effect of such convection current.
In addition, constitute center conductor trunk 41 of the present invention as shown in Figure 2 owing to be disposed at the position that covers total length in oil insulator, therefore, center conductor trunk 41 is not exposed in the outer gas.Screw thread screws the 41c of portion, 41d and is configured in the insulating oil 6, can not be exposed in the nitrogen in nitrogen space 11.Have the air of sneaking in the insulating sleeve assembling in this nitrogen space 11, perhaps the mixed possibility of depositing of the air of sneaking into through the gasket seal between the sealing product is also high.In this case, screw thread screws the 41c of portion, 41d and is exposed in this airborne oxygen, though have at screw thread and screw the problem that forms oxide-film on the 41c of portion, the 41d, but by the present invention, the bolt part of center conductor trunk 41 (recess) 41a, 41b can not carry out oxide-film in this part and form owing to do not contact oxygen.Therefore, by after quality management is ground bolt part (recess) 41a, the 41b of center conductor trunk 41 in the factory completely, before oxide-film forms, finish assembly manipulation immediately, thereby the 41c of portion, 41d form oxide-film, overheated such worry when the resistance that produces by this oxide-film causes switching on regard to screwing at screw thread after not had.In addition,, can obtain the film formed effect of slow oxidation if bolt part is implemented zinc-plated processing, make the assembling till have plenty of time.
In addition, screw the 41c of portion, 41d by screw thread and be disposed in the insulating oil 6, the such effect of exothermal efficiency also can improve.Screw thread screws the 41c of portion, 41d because the contact resistance between the bolt is unavoidably big than other parts heat release, and the tendency of the high heat that becomes is arranged.If become high heat, this heat is passed to oil-paper capacitor core 5 by center conductor trunk 41, and the problem of heat deterioration as the insulating paper of oil-paper capacitor core base material arranged.But, among the present invention, be arranged on the position of soaking in the oil by screw thread being screwed the 41c of portion, 41d, different with the situation in gas, the heat that produces is directly passed to the insulating oil of surrounding liquid, can not reach the high temperature that makes as the insulating paper deterioration degree of oil-paper capacitor core base material, can effectively eliminate the hot deterioration problem of insulating paper.
The user of insulating sleeve connects top terminal 9 in the upper end that the energising terminal connects with top conductor 42, after the lower end of terminal connection with lower metal part 43 that switch on connects oily terminal 10, use this insulating sleeve, the present invention uses top conductor 42 by copper owing to be exposed to the energising terminal connection of insulating sleeve upper end, it is that the metallic parts constitute by copper also that the energising terminal connects with lower metal part 43, therefore, eliminated oxide-film such when forming the aluminium alloy part that uses in the past, by this resistance overheated such worry when switching on.
Other execution mode
Fig. 5 shows the cross-sectional illustration figure of the oil insulator of the present invention of other execution mode.The center conductor trunk 41 of Fig. 6 displayed map 5 is connected the expansion key diagram that screws connecting portion with the screw thread of top conductor 42 with the energising terminal.In the present embodiment, center conductor trunk 41 is connected with top conductor 42 and connects with the energising terminal by tube connector 14.Tube connector 14 can be a copper, also can be aluminium alloy system.The 14a of upper bolt portion of tube connector 14 screws by screw thread and is arranged on the bolt part 42b connection that the energising terminal is connected usefulness top conductor 42 bottoms.The 14b of lower bolt portion of tube connector 14 screws with the bolt part 41a that is arranged on center conductor trunk 41 tops by screw thread and is connected.
Near the central height of tube connector 14, be provided with discharge orifice 14c.By becoming such structure, screw thread screws the bolt footpath of portion and compares with above-mentioned execution mode, can be bigger, and therefore, bigger tension force can bear in the portion of screwing, and has to bear the bigger such effect of center fastening force.
In addition, in the present embodiment, discharge orifice 14c is disposed at the bottom of expanding chamber 7.By becoming such structure, can make the insulating oil convection current of outflow in the mode of soaking into expanding chamber 7 inner faces to discharge orifice 14c.By carrying out such insulating oil convection current, can improve heat transfer efficiency to expanding chamber 7, from carrying out heat release to the outside here, therefore, compare with above-mentioned execution mode, can realize more excellent exothermal efficiency.
Embodiment
The present invention screws the connection of the upper and lower side that carries out center conductor trunk 41 by screw thread.Other method that this connection is connected with metal covering fusions such as for example making arc welding or friction welding (FW) is compared the mechanical property excellence.That is, this is because because material is not applied heat, do not have the material that is caused by heat and reduce.Therefore, when insulating sleeve is applied external force, has sufficient endurance.But on the contrary, bolt connects situation about being connected with motlten metal to be compared, and the contact resistance on composition surface is big, and the bad influence of heating when energising is arranged particularly produces tremendous influence during short circuit current flow in insulating sleeve.If to be screwed into usually, only screw this bolt, suitable screw moment of torsion under the state of tightening with general, short circuit current flow, the Joule heat that nearly all situation is produced by short circuit current makes the bolt part thermal extremes that becomes, and produces fusing.For example, screw moment of torsion to screw diameter be 50mm, long when being the bolt of 40mm with common, the contact resistance of connecting portion is approximately about 50 μ Ω, still, if flow through 50 therein, the short circuit current of 000A, it consumes electricity is 50,000 * 50,000 * 50 * 10
-6=125,000W produces heat by 2 seconds short circuits and reaches 50,000J, and therefore, low-melting aluminium alloy produces fusing.Even do not reach fusing, because the influence of heat reduces the mechanical strength of material, therefore, the situation of aluminium alloy arrives temperature when having stipulated the short circuit current energising in insulating sleeve standard JEC-5202 or IEC 60137 can not be above 180 ℃.The present invention has solved this difficult point with effective countermeasure.This is by powerful center fastening force, applies strong compressing surface between the bolt that double thread screws and presses, and makes contact resistance become extremely low.
Promptly, for example in the execution mode of Fig. 2, because the compression stress that puts on 0LE_LINK10LE_LINK2 spring 80LE_LINK10LE_LINK2 is by binding nut 13, the terminal of will switching on connects uses top conductor 42 to push up upward, screw among the 41c of portion with the screw thread that the energising terminal is connected with top conductor 42 at center conductor trunk 41, this compression stress plays a role as the tension force with value.This is called the center fastening force.This center fastening force also is connected screw thread with lower metal part 43 at the lower end of center conductor trunk 41 and the terminal of switching on simultaneously and screws among the 41d of portion and play a role.The number side by side of spring 8 is many more, and the center fastening force that applies is powerful more.In addition, this progression is many more, because the thermal expansion the during variations in temperature of each parts is shunk, the degree that the center fastening force descends is few more, thereby stable more.
Following table 1 shows and is used for that screw thread of the present invention screws portion's performance and the short circuit test result that carries out.
Table 1
As shown in table 1, the screw thread portion of screwing of tightening structure with bolt in the past fuses, and center of the present invention fastening type does not have unusual and do not sustained short circuit.This is because by the effect of the present invention by powerful center fastening force, and the face of bolt contact-making surface is pressed and become high, and the contact resistance that the screw thread of center fastening type screws portion is approximately the low like this value of 1 μ Ω.
Claims (3)
1. oil insulator is characterized in that having:
The insulating sleeve body, it comprises gas side insulator, oily side insulator and the mounting flange metal-ware between two insulators,
Connect described insulating sleeve body center conductor and
The energising terminal connects uses the lower metal part, and its bottom and center conductor screw thread at described insulating sleeve body screws;
Wherein, described center conductor comprises that the center conductor trunk is connected and uses top conductor with the energising terminal, described center conductor trunk is covered total length by described oil insulator, and described energising terminal connects the upper end, high-pressure side that is combined on described center conductor trunk with the top conductor screw thread
It is that metal parts constitutes by copper or copper that described energising terminal connection is connected with the lower metal part with top conductor with the energising terminal,
Described center conductor trunk is made of aluminium alloy part.
2. oil insulator according to claim 1 wherein, is connected the connecting portion that screws with the top conductor screw thread under the pasta of the insulating oil that is filled in oil insulator inside with the upper end, high-pressure side of described center conductor trunk with the energising terminal.
3. oil insulator according to claim 1 and 2 wherein, has the center fastening structure that the screw thread portion of screwing that screw thread for the bottom that is positioned at center conductor screws portion and be positioned at the upper end, high-pressure side of center conductor trunk applies tensile stress.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-036089 | 2009-02-19 | ||
| JP2009036089A JP4796638B2 (en) | 2009-02-19 | 2009-02-19 | Oil-filled bushing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101814347A true CN101814347A (en) | 2010-08-25 |
| CN101814347B CN101814347B (en) | 2012-10-31 |
Family
ID=42621571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101135582A Expired - Fee Related CN101814347B (en) | 2009-02-19 | 2010-02-05 | Insulating sleeve for oil filling |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4796638B2 (en) |
| CN (1) | CN101814347B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105469958A (en) * | 2016-01-05 | 2016-04-06 | 北京中联科创高压电器有限公司 | High-current glue-impregnated fiber dry type capacitive type transformer bushing |
| 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 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6159967B2 (en) * | 2013-03-14 | 2017-07-12 | 日本碍子株式会社 | Oil immersion paper capacitor bushing |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5163490A (en) * | 1974-11-29 | 1976-06-01 | Tokyo Shibaura Electric Co | PUTSUSHINGU |
| JPS5621316U (en) * | 1979-07-27 | 1981-02-25 | ||
| JPS6245389Y2 (en) * | 1981-04-09 | 1987-12-04 | ||
| JPH083969B2 (en) * | 1989-07-21 | 1996-01-17 | 日本碍子株式会社 | Center clamp bushing |
| CA2013254A1 (en) * | 1990-03-13 | 1991-09-13 | William R. Rueth, Jr. | High-voltage outdoor electrical bushing |
| JP2963645B2 (en) * | 1995-07-25 | 1999-10-18 | 日本碍子株式会社 | Cage-shaped connecting conductor and bushing using the same |
| CN2293887Y (en) * | 1997-04-01 | 1998-10-07 | 谷杏石 | Plastic insulating sleeve tube |
| JP2000294426A (en) * | 1999-04-06 | 2000-10-20 | Toshiba Corp | Capacitor bushing |
| JP2002093630A (en) * | 2000-09-14 | 2002-03-29 | Mitsubishi Electric Corp | Oil-immersed bushing |
| JP2003007158A (en) * | 2001-06-25 | 2003-01-10 | Energy Support Corp | Bushing |
| CN201084502Y (en) * | 2007-09-07 | 2008-07-09 | 西安电力机械制造公司 | An oil-immersed paper condenser-type wall-penetrating busing insulator |
-
2009
- 2009-02-19 JP JP2009036089A patent/JP4796638B2/en not_active Expired - Fee Related
-
2010
- 2010-02-05 CN CN2010101135582A patent/CN101814347B/en not_active Expired - Fee Related
Cited By (4)
| 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 |
| CN105469958A (en) * | 2016-01-05 | 2016-04-06 | 北京中联科创高压电器有限公司 | High-current glue-impregnated fiber dry type capacitive type transformer bushing |
| CN105469958B (en) * | 2016-01-05 | 2018-04-03 | 北京中联科创高压电器有限公司 | A kind of high current glue soaks fiber dry-type capacitance type bushing shell for transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101814347B (en) | 2012-10-31 |
| JP2010192277A (en) | 2010-09-02 |
| JP4796638B2 (en) | 2011-10-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR200470445Y1 (en) | Connection structure of branch sleeves for power line | |
| KR101442436B1 (en) | Hermetically sealed compressor | |
| CN107204253A (en) | A kind of relay | |
| KR101817144B1 (en) | Hermetic terminal with fully insulated direct wire connection | |
| JP2019522338A (en) | Transformer bushings | |
| US9281674B2 (en) | Method of busway construction | |
| CN101814347B (en) | Insulating sleeve for oil filling | |
| CN107768118A (en) | Capacitive transformer porcelain full skirt sleeve pipe | |
| CN107204254A (en) | A kind of relay | |
| CN102369641A (en) | Conductor for high voltage electric apparatus | |
| CN105958319A (en) | PT cabinet casing pipe and bus connection device | |
| US11349266B2 (en) | Separable loadbreak design with enhanced ratings | |
| EP2980820B1 (en) | On-load tap-changer for dry transformers and dry transformer | |
| US4046958A (en) | Cable termination connector assembly and method | |
| US11626242B2 (en) | Winding assembly | |
| JP2008182885A (en) | Insulator | |
| EP3944276B1 (en) | Circuit breaker compartment | |
| US9991692B2 (en) | Method and apparatus for sealing motor terminals | |
| KR100569025B1 (en) | Gas Insulation Bushing | |
| WO2023053261A1 (en) | Ring-shaped coil spring of switchgear and switchgear using same | |
| CN114496607B (en) | Power distribution module | |
| JP4542868B2 (en) | Sealed electrical equipment | |
| EP2128944A1 (en) | A method of producing an encapsulated electric apparatus and such an encapsulated electric apparatus | |
| KR20220136706A (en) | Gas insulation switchgear | |
| JPH02285909A (en) | Conductor connector |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121031 Termination date: 20200205 |