CN102820632A - Device for feeding a high voltage through a wall at ground potential - Google Patents
Device for feeding a high voltage through a wall at ground potential Download PDFInfo
- Publication number
- CN102820632A CN102820632A CN2012101865847A CN201210186584A CN102820632A CN 102820632 A CN102820632 A CN 102820632A CN 2012101865847 A CN2012101865847 A CN 2012101865847A CN 201210186584 A CN201210186584 A CN 201210186584A CN 102820632 A CN102820632 A CN 102820632A
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- China
- Prior art keywords
- conductor
- insulator
- high pressure
- wall bushing
- wall
- 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.)
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Links
- 239000004020 conductor Substances 0.000 claims abstract description 92
- 239000012212 insulator Substances 0.000 claims description 45
- 238000004804 winding Methods 0.000 claims description 19
- 230000004888 barrier function Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 239000000615 nonconductor Substances 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 6
- 229960000909 sulfur hexafluoride Drugs 0.000 description 6
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/26—Lead-in insulators; Lead-through insulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing arrangements
Landscapes
- Insulators (AREA)
Abstract
The invention relates to a device (1) for feeding a high voltage through a wall (17) which can be connected to ground potential having a first high-voltage bushing (2) which has a first high-voltage connection (5) and a first high-voltage conductor (8) which is connected to the first high-voltage connection (5) and extends through a first electrical insulating body (6), and a second high-voltage bushing (3) which has a second high-voltage connection (9) and a second high-voltage conductor (12) which is connected to the second high-voltage connection (9) and extends through a second electrical insulating body (16), wherein the first high-voltage conductor (8) and the second high-voltage conductor (12) are electrically connected to one another by means of a gas--insulated link (4) which has a wall-mounting section (18) which is equipped for mounting in the wall. The installation of the device is simplified by the link.
Description
Technical field
But the present invention relates to a kind ofly be used to guide high voltage to pass the device of the wall of ground connection.
Background technology
This device is known in existing practical application.Therefore; For example perhaps outwards export high pressure to the part transferring high voltage of another building, air-insulated high voltage transmission line is introduced in the insulating gas atmosphere by wall bushing from the thyristor chamber (Ventilhalle) of high-voltage direct-current transmission system for part from a building.For this reason, said wall bushing has insulator strip, that be filled with insulating gas, that pass wall.High-pressure conductor extends in insulator.For example sulphur hexafluoride can be used as insulating gas, and it has very high ionization energy, breakdown strength and suitable negative electricity performance.The known in addition insulator that does not contain gas.For example winding can be used as insulator, and it is processed through winding resin impregnation or oil impregnated paper web face on high-pressure conductor.This winding or winding body make it possible to controllably to regulate very high electric field strength and therefore prevent conductor that is in high-voltage potential and ground connection or be between the building wall of ground potential voltage breakdown takes place.
In existing known high-voltage direct-current transmission system, it is indoor that the current transformer thyristor is arranged on thyristor usually.For higher direct voltage is outwards exported from the thyristor chamber, be provided with by two feed output systems (Ausleitsystem) of constituting of the open-air wall bushing of sulphur hexafluoride that is coupled of rigidity each other.Said two wall bushings that are coupled each other have the insulator that extends longitudinally separately, are provided with high pressure connection at the insulator free end.But be provided with the permanent joint of ground connection at the other end of wall bushing.This insulator is made up of the spool insulator of having filled the gaseous state sulphur hexafluoride.Two wall bushings interconnect on mounting flange rigidly.Said wall bushing must be provided with in this design like this, makes them be basically perpendicular to wall ground in the both sides of thyristor locular wall and extends.Favour wall when directed at wall bushing, insulator must design longlyer, with the distance that adapts to the relative thyristor locular wall of high pressure connection than the nearer this situation of the distance of its relative fixed flange.
Yet along with operating voltage is increasingly high, the feed output system that this rigidity each other is coupled is because on the electrotechnics and size design standard mechanically and increasing, therefore relevant with it power is close to no longer can Be Controlled.
Summary of the invention
Therefore, technical problem to be solved by this invention is, a kind of device that starts said type is provided, and it can be flexibly and is arranged at an easy rate on the wall (for example house sidings or housing wall).
But technical problem to be solved by this invention is used to guide high voltage to pass the device solves of the wall of ground connection through a kind of; This device has the first high pressure wall bushing; This first high pressure wall bushing have first high pressure connection with link to each other with said first high pressure connection and pass first high-pressure conductor that first electrical insulator extends; This device has the second high pressure wall bushing; This second high pressure wall bushing have second high pressure connection with link to each other with said second high pressure connection and pass second high-pressure conductor that second electrical insulator extends; Wherein, first high-pressure conductor and second high-pressure conductor are electrically connected to each other through gas isolated intermediate conductor, and this intermediate conductor has the wall department of assembly section in the wall that is provided for packing into.
According to the present invention, said two high pressure wall bushings rigidity no longer each other are coupled.On the contrary, be provided with gas isolated intermediate conductor (GIL), it interconnects two high pressure wall bushings.Therefore, be divided into three sub-systems according to device of the present invention.Said three sub-systems, promptly the first high pressure wall bushing, the second high pressure wall bushing and gas isolated intermediate conductor can design independently of each other.In framework of the present invention, the high pressure wall bushing also needn't be again perpendicular to the wall mounted that needs direct high pressure to pass.On the contrary, this gas isolated intermediate conductor is arranged in the wall with its wall department of assembly section, wherein, subsequently can be with wall at a distance of suitable distance ground with each wall bushing of relative wall angle assembling arbitrarily.Therefore, the flexibility in assembling has increased, and has therefore expanded according to Design of device of the present invention.
Gas isolated intermediate conductor advantageously has the sleeve pipe and the bonding conductor of having filled insulating gas; Said bonding conductor remains in the said sleeve pipe through the maintenance device of electric insulation; Wherein, said bonding conductor links to each other with second insulator with first insulator with electrical connection of second high-pressure conductor and said sleeve pipe with said first high-pressure conductor airtightly.According to this favourable expansion design, said sleeve pipe ground connection or be in ground potential.Said bonding conductor and first and second high-pressure conductors conduction ground is connected and so is in high-voltage potential, for example 1000kV at work.Through for example being that the insulating gas of sulphur hexafluoride can provide sufficiently high compressive resistance between sleeve pipe and bonding conductor.At this, the size of casing diameter makes the deadweight of associated components in general manufacturing technology still in controlled range.
According to the preferred design of the present invention, said gas isolated intermediate conductor is made up of gas isolated intermediate conductor module Modularly.But said intermediate conductor module for example has the cannula portion section of blanketing gas.Middle conductor portion section is bearing in cannula portion section or the casing joint through the maintenance device of insulation.In addition, in the end of each cannula portion section mounting flange is set.Can the cannula portion section be interconnected airtightly by said mounting flange.Meanwhile, middle conductor portion section is in contact with one another and the conduction that therefore constitutes between the said conductor connects.Said cannula portion section for example extends longitudinally.Differently can the cannula portion section be designed to curved therewith.Within the scope of the invention, the relative configurations of the flange through the intermediate conductor module also can realize the angled connection of gas isolated intermediate conductor.Yet point out once more that at this said gas isolated intermediate conductor also can have crooked or angled extension shape according to the present invention, and does not have the intermediate conductor module.
The first high pressure wall bushing has the open-air joint (Freiluftanschluss) that is used to connect air-insulated high voltage transmission line worthily.
In a kind of relevant with it expansion design, first insulator has first insulator of the hollow cylinder of having filled insulating gas.
According to relevant with it another kind of suitable expansion design; First mounting flange is set on said insulator; The first high pressure wall bushing mechanically and airtightly is fixed on the gas isolated intermediate conductor through this first mounting flange; Wherein, select the distance size between first mounting flange and the first open-air joint like this, make and in air ambient, guarantee sufficiently high compressive resistance.
According to the relevant with it a kind of suitable design of the present invention, the said first high pressure wall bushing is so-called air-insulating gas wall bushing, and wherein, said insulating gas is sulphur hexafluoride worthily.This air-insulating gas wall bushing directly links to each other with the end face of the sleeve pipe of gas isolated intermediate conductor with the insulator of its hollow cylinder.At this, it is very easily that airtight flange connects.
According to first kind of flexible program of the present invention, the air chamber of the said first high pressure wall bushing and said gas isolated intermediate conductor directly interconnect.Yet also air locking can be set, it is made up of suitable encapsulant and between the insulator of hollow cylinder and first high-pressure conductor, produces sealing effectiveness with it differently.This has simplified the assembling according to device of the present invention.
The second high pressure wall bushing also has the second open-air joint that is used for linking to each other with air-insulated second high-pressure conductor worthily.
According to a kind of relevant with it expansion design, second insulator also comprises second insulator of the hollow cylinder of having filled insulating gas.Rephrase the statement, be provided with two air-insulating gas wall bushing according to this design of the present invention, they interconnect through gas isolated intermediate conductor.At this, the sleeve pipe of gas isolated intermediate conductor links to each other with second insulator of the hollow cylinder of second wall bushing airtightly, and therefore two air chambers of the second high pressure wall bushing and gas isolated intermediate conductor also are interconnected.Yet in this design, also can said air chamber be separated each other through suitable air locking.
Second mounting flange advantageously is set on second insulator; The second high pressure wall bushing mechanically and airtightly is fixed on the gas isolated intermediate conductor through this second mounting flange; Wherein, Select the distance size between second mounting flange and the second open-air joint like this, make and in air ambient, guarantee sufficiently high compressive resistance.
With it differently; Second insulator is a winding body, and it has the conductive liner that is wrapped on second high-pressure conductor, and this conductive liner is through impregnated insulating barrier each interval; Wherein, the mounting flange that links to each other airtightly with gas isolated intermediate conductor is set on winding body.The high pressure wall bushing that has this winding body is known to those skilled in the art.Insulating barrier for example is a ply of paper, and it is immersed in the oil behind winding process.In other words, the second high pressure wall bushing is oil impregnated high pressure wall bushing.Yet different with it ground, the insulating barrier of winding body (promptly for example ply of paper) soaked in liquid resin, and wherein, and then resin hardens.This wall bushing is known as the wall bushing of resin impregnation.Second high-pressure conductor extends through winding body and for example forms the transformer joint at its end that stretches out winding body, and this joint contacts with the winding of transformer herein.At this, the transformer joint is arranged in transformer tank in the oil groove of transformer.Second high-pressure conductor is connected with the middle conductor conduction in its end away from the transformer joint.
Description of drawings
Through embodiments of the invention explanation the present invention other suitable design and advantage, wherein, the member of same function is quoted identical Reference numeral below in conjunction with accompanying drawing.In the accompanying drawings:
Fig. 1 shows be according to first kind of embodiment of device of the present invention and
That Fig. 2 shows is second kind of embodiment according to device of the present invention.
Embodiment
That Fig. 1 shows is first embodiment according to device 1 of the present invention, and this device 1 has the first high pressure wall bushing 2 and the second high pressure wall bushing 3, and said wall bushing interconnects through gas isolated intermediate conductor 4.
The first high pressure wall bushing 2 has the first open-air joint 5 that is used for the air-insulated high-pressure conductor that connection layout do not show.Therefore, this first open-air joint 5 is in high-voltage potential at work.The first open-air joint 5 is fixed on the insulator 6 that is designed to the hollow cylinder insulator, is filled with insulating gas in this insulator, like sulphur hexafluoride.For fear of leakage current and partial discharge, insulator 6 has been equipped with outside fin.The first fixed part section 7 is arranged on the end of insulator 6 away from open-air joint 5.First high-pressure conductor 8 that is electrically connected with the first open-air joint 5 is first insulator, 6 inner extensions.
The second high pressure wall bushing 3 has the second open-air joint 9, second insulator 10 and second mounting flange 11.Second insulator 10 also is designed to fill the hollow cylinder insulator of insulating gas, and wherein, second high-pressure conductor that is electrically connected with the second open-air joint 9 passes this insulator and extends.First high-pressure conductor 8 and second high-pressure conductor 12 through insulation device that does not show among the figure or the insulator inside that remains on each insulator 6 or 10 with keeping the device electric insulation; Wherein, first high-pressure conductor 8 and second high-pressure conductor 12 medially pass hollow cylinder insulator extension separately respectively.
Gas isolated intermediate conductor 4 has intermediate conductor module 13, and this intermediate conductor module 13 has sleeve pipe 14 respectively, is designed with bump joint 15 respectively at sleeve pipe 14 two ends.The bump joint 15 of sleeve pipe 14 perhaps is connected with said first mounting flange 7 or second mounting flange 11 each other airtightly.Middle conductor portion section 16 is extended in each sleeve pipe 4, said middle conductor portion section 16 or be connected, or link to each other with the middle conductor 16 of adjacent intermediate conductor module 13 with first high-pressure conductor 8, second high-pressure conductor 12.Open- air joint 5 and 9 method in this way is electrically connected each other.The sleeve pipe connection of intermediate conductor module 13 is connected design like this with flange, thereby crooked or angled intermediate conductor 4 are provided.Middle conductor portion section 16 is not also through remaining in the cannula portion section separately to the insulation device isolation of demonstration among the figure.
Device 1 extends through ground connection or is in the wall 17 of ground potential.At this, the intermediate module portion section 13 that is arranged in the wall 17 is called wall department of assembly section 18.By intermediate conductor module 13 can make first and second wall bushings 2,3 respectively with the so at interval distance of wall 17; Although make insulator 6 for example relatively the wall parallel orientation also in the open joint 5 or 9 and wall 17 between form enough spacings, thereby avoid voltage breakdown.But the inclination of the vertical placement of high pressure wall bushing 2 or the second high pressure wall bushing 3 is placed and has been simplified assembling.This is favourable when voltage constantly raises especially.High pressure wall bushing 2 and 3 can design personalizedly, and needn't consider to be installed on the wall definite form really, the predetermined angle of for example confirming.This assembling feasible program also helps the earthquake-resistant safe property of this device.
Fig. 2 has shown the another kind of embodiment according to apparatus of the present invention.It only is that with difference according to the embodiment of Fig. 1 the second high pressure wall bushing 3 is not air-insulating gas wall bushing.On the contrary, the second high pressure wall bushing 3 has the winding body 19 as insulator, and this winding body 19 has conductive liner, and this conductive liner is through the ply of paper each interval.Said lining and ply of paper are wrapped on second high-pressure conductor, wherein only can find out transformer joint 20, and this transformer joint 20 stretches into the oil groove of transformer 21 and at that from winding body 19 and links to each other with the winding of transformer 21 through the interface unit that does not show.Second high-pressure conductor links to each other with the middle conductor 16 of gas isolated intermediate casing 4 in its end away from transformer 21.In addition; The second high pressure wall bushing 3 has mounting flange 22; This mounting flange 22 ground connection or be in ground potential, and being fixedly connected with the pipe joint 23 of transformer 21 on the one hand link to each other with the mounting flange 15 of distolateral intermediate conductor module 13 on the other hand airtightly.Therefore, the second high pressure wall bushing 3 is insulating gas-oily wall bushings.
Claims (11)
1. but one kind is used to guide high voltage to pass the device (1) of the wall (17) of ground connection; This device (1) has the first high pressure wall bushing (2); This first high pressure wall bushing (2) have first high pressure connection (5) with link to each other with said first high pressure connection (5) and pass first high-pressure conductor (8) that first electrical insulator (6) extends; Said device (1) also has the second high pressure wall bushing (3); This second high pressure wall bushing (3) have second high pressure connection (9) with link to each other with said second high pressure connection (9) and pass second high-pressure conductor (12) that second electrical insulator (10) extends; Wherein, said first high-pressure conductor (8) and said second high-pressure conductor (12) are electrically connected to each other through gas isolated intermediate conductor (4), and this intermediate conductor (4) has the wall department of assembly section (18) in the wall that is provided for packing into.
2. according to the described device of claim 1 (1); It is characterized in that; Said gas isolated intermediate conductor (4) has the sleeve pipe (14) and the bonding conductor (16) of having filled protective gas; Said bonding conductor (16) is bearing in the said sleeve pipe (14) through the maintenance device of electric insulation, and wherein, said bonding conductor (16) is electrically connected with second high-pressure conductor (12) with said first high-pressure conductor (8) and said sleeve pipe (14) links to each other with second insulator (10) with said first insulator (6) airtightly.
3. according to claim 1 or 2 described devices (1), it is characterized in that said gas isolated intermediate conductor (4) is made up of gas isolated intermediate conductor module (13) Modularly.
4. according to the described device of one of aforementioned claim (1), it is characterized in that the said first high pressure wall bushing (2) has the open-air joint (5) that is used to connect air-insulated high voltage transmission line.
5. according to the described device of claim 4 (1), it is characterized in that said first insulator (6) has first insulator of the hollow cylinder of having filled insulating gas.
6. according to the described device of claim 5 (1); It is characterized in that; First mounting flange (7) is installed on said first insulator (6), and the said first high pressure wall bushing (2) mechanically and airtightly is fixed on the said gas isolated intermediate conductor (4), wherein through this first mounting flange (7); Select the distance size between said first mounting flange (7) and the said first open-air joint (5) like this, thereby in air ambient, guarantee sufficiently high compressive resistance.
7. according to the described device of one of aforementioned claim (1), it is characterized in that the said second high pressure wall bushing (3) has the second open-air joint (9) that is used to connect air-insulated second high voltage transmission line.
8. according to the described device of claim 7 (1), it is characterized in that said second insulator (10) comprises second insulator of the hollow cylinder of having filled insulating gas.
9. according to the described device of claim 8 (1); It is characterized in that; Second mounting flange (11) is arranged on said second insulator (10), and the said second high pressure wall bushing (3) mechanically and airtightly is fixed on the said gas isolated intermediate conductor (4), wherein through this second mounting flange (11); Select the distance size between said second mounting flange (11) and the said second open-air joint (9) like this, thereby in air ambient, guarantee sufficiently high compressive resistance.
10. according to the described device of one of claim 1 to 6 (1); It is characterized in that; Said second insulator is winding body (19), and this winding body (19) has the conductive liner that is wrapped on said second high-pressure conductor (12), and this conductive liner is through impregnated insulating barrier each interval; Wherein, said winding body (19) is provided with the mounting flange (22) that links to each other airtightly with said gas isolated intermediate conductor (4).
11., it is characterized in that said insulating barrier is the insulating barrier of crossing with oil-impregnated according to the described device of claim 10 (1).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011077190A DE102011077190A1 (en) | 2011-06-08 | 2011-06-08 | Device for passing a high voltage through a wall to earth potential |
| DE102011077190.5 | 2011-06-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102820632A true CN102820632A (en) | 2012-12-12 |
| CN102820632B CN102820632B (en) | 2017-05-03 |
Family
ID=47220374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210186584.7A Active CN102820632B (en) | 2011-06-08 | 2012-06-07 | Device for feeding a high voltage through a wall at ground potential |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN102820632B (en) |
| CA (1) | CA2779240C (en) |
| DE (1) | DE102011077190A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103187686A (en) * | 2013-04-01 | 2013-07-03 | 山东彼岸电力科技有限公司 | Extra-high-pressure wall bushing |
| CN106025963A (en) * | 2016-05-25 | 2016-10-12 | 国网山东省电力公司莱芜供电公司 | Anti-leakage overhead incoming line combination fixing apparatus for 10kV distribution room |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09103006A (en) * | 1995-05-20 | 1997-04-15 | Abb Patent Gmbh | High-tension switch gear |
| DE29707899U1 (en) * | 1997-05-05 | 1998-09-17 | HSP Hochspannungsgeräte Porz GmbH, 51145 Köln | Wall bushing |
| US20020017394A1 (en) * | 2000-06-28 | 2002-02-14 | Manfred Meinherz | Outdoor high-voltage bushing, and a high-voltage switching device having such a bushing |
| CN1409328A (en) * | 2002-10-08 | 2003-04-09 | 黄维枢 | Epoxy resin dipping fibre high voltage insulation core body |
| CN101359818A (en) * | 2008-09-28 | 2009-02-04 | 北京网联直流工程技术有限公司 | Method and apparatus for inhibiting non-uniform rain lightning by high-voltage through-wall sleeve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT235926B (en) * | 1961-08-08 | 1964-09-25 | Haefely & Cie Ag Emil | High voltage electrical feedthrough |
| DE2708359C3 (en) * | 1977-02-23 | 1980-07-31 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Indoor high-voltage switchgear |
-
2011
- 2011-06-08 DE DE102011077190A patent/DE102011077190A1/en not_active Withdrawn
-
2012
- 2012-06-06 CA CA2779240A patent/CA2779240C/en active Active
- 2012-06-07 CN CN201210186584.7A patent/CN102820632B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09103006A (en) * | 1995-05-20 | 1997-04-15 | Abb Patent Gmbh | High-tension switch gear |
| DE29707899U1 (en) * | 1997-05-05 | 1998-09-17 | HSP Hochspannungsgeräte Porz GmbH, 51145 Köln | Wall bushing |
| US20020017394A1 (en) * | 2000-06-28 | 2002-02-14 | Manfred Meinherz | Outdoor high-voltage bushing, and a high-voltage switching device having such a bushing |
| CN1409328A (en) * | 2002-10-08 | 2003-04-09 | 黄维枢 | Epoxy resin dipping fibre high voltage insulation core body |
| CN101359818A (en) * | 2008-09-28 | 2009-02-04 | 北京网联直流工程技术有限公司 | Method and apparatus for inhibiting non-uniform rain lightning by high-voltage through-wall sleeve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103187686A (en) * | 2013-04-01 | 2013-07-03 | 山东彼岸电力科技有限公司 | Extra-high-pressure wall bushing |
| CN106025963A (en) * | 2016-05-25 | 2016-10-12 | 国网山东省电力公司莱芜供电公司 | Anti-leakage overhead incoming line combination fixing apparatus for 10kV distribution room |
| CN106025963B (en) * | 2016-05-25 | 2017-07-18 | 国网山东省电力公司莱芜供电公司 | The 10kV switchgear houses service drop combination fastener of antiseep |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2779240A1 (en) | 2012-12-08 |
| DE102011077190A1 (en) | 2012-12-13 |
| CN102820632B (en) | 2017-05-03 |
| CA2779240C (en) | 2020-05-26 |
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Effective date of registration: 20220113 Address after: Munich, Germany Patentee after: Siemens energy Global Ltd. Address before: Munich, Germany Patentee before: SIEMENS AG |
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Effective date of registration: 20240619 Address after: Troisdorf, Germany Patentee after: Huishipu High Voltage Electrical Co.,Ltd. Country or region after: Germany Address before: Munich, Germany Patentee before: Siemens energy Global Ltd. Country or region before: Germany |
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