CN112420290B - Integrated pure-dry high-voltage bushing with mounting flange insulation structure and manufacturing method thereof - Google Patents
Integrated pure-dry high-voltage bushing with mounting flange insulation structure and manufacturing method thereof Download PDFInfo
- Publication number
- CN112420290B CN112420290B CN202011083172.1A CN202011083172A CN112420290B CN 112420290 B CN112420290 B CN 112420290B CN 202011083172 A CN202011083172 A CN 202011083172A CN 112420290 B CN112420290 B CN 112420290B
- Authority
- CN
- China
- Prior art keywords
- capacitor core
- mounting flange
- current
- carrying conductor
- voltage bushing
- 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.)
- Active
Links
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
- H01B17/28—Capacitor type
-
- 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
- H01B17/38—Fittings, e.g. caps; Fastenings therefor
-
- 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
- H01B17/56—Insulating bodies
- H01B17/58—Tubes, sleeves, beads, or bobbins through which the conductor passes
- H01B17/583—Grommets; Bushings
-
- 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
- H01B17/56—Insulating bodies
- H01B17/64—Insulating bodies with conductive admixtures, inserts or layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulators (AREA)
Abstract
The invention discloses an integrated pure dry high-voltage bushing of an installation flange insulation structure, which comprises a current-carrying conductor, a capacitor core, an umbrella skirt and an installation flange, wherein the capacitor core is arranged outside the current-carrying conductor; the mounting flange and the capacitor core are of an integrated molding structure, the problems of connection and sealing between the mounting flange and the capacitor core with an insulating structure are solved, a cementing bonding mode is avoided, the assembly is simpler, the structure is more reliable, the problem of sealing leakage between the mounting flange and the capacitor core with the insulating structure is completely solved, and a more reliable sealing effect is achieved; in addition, the end screen measuring terminal is cancelled, so that the problems of connection and sealing between the end screen measuring terminal and the mounting flange do not exist, and the risk problem that the end screen lead discharges to the metal mounting flange does not exist.
Description
Technical Field
The invention relates to a mounting flange insulation structure integrated pure dry type high-voltage bushing and a manufacturing method thereof, belonging to the technical field of high-voltage bushings.
Background
High voltage bushings refer to devices that provide insulation and support for one or more conductors passing through a partition such as a wall or box, and are important equipment in electrical power systems; the mounting flange is a part for connecting the sleeve with equipment such as a wall body or a box body and the like, is made of metal materials and plays a role of fixing and supporting the sleeve; the insulation structure refers to one or more insulation materials of the sleeve, and is used for bearing the insulation part acted by high voltage; the dry-type high-voltage bushing is a bushing with dry-type insulation adopted as main insulation of the high-voltage bushing, and the dry-type insulation refers to insulation of the bushing without transformer oil or gas; the conventional dry-type high-voltage bushing adopts a metal mounting flange, the metal mounting flange and a dry-type capacitor core are bonded by adopting a cementing structure, meanwhile, the matching part is sealed by adopting a sealing ring, the end screen lead of the dry-type capacitor core is connected with the metal mounting flange through a measuring terminal, and the structure of the conventional dry-type high-voltage bushing is shown as the attached figure 6; the metal mounting flange of the conventional dry-type high-voltage sleeve and the dry-type capacitor core are sealed by the sealing ring, so that the leakage risk of the sealing ring exists, and meanwhile, the metal mounting flange of the conventional dry-type high-voltage sleeve and the dry-type capacitor core need to be glued, so that the process is complex, the assembly time is long, and the efficiency is low; and the end screen lead of the dry-type capacitor core is connected with the metal mounting flange through the end screen measuring terminal, the end screen measuring terminal and the metal mounting flange are sealed through a sealing ring, the risk of discharging of the end screen lead to the metal mounting flange exists, and then the end screen breakdown of the dry-type capacitor core is caused.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides an integrated pure dry high-voltage bushing of a mounting flange insulation structure, and simultaneously discloses a manufacturing method of the bushing, so that the structure of the traditional capacitor core is changed, the mounting flange and the capacitor core are of an integrated molding structure, the connection and sealing problems between the mounting flange and the capacitor core of the insulation structure are avoided, a cementing bonding mode is avoided, the assembly is simpler, the structure is more reliable, the problem of sealing leakage between the mounting flange and the capacitor core of the insulation structure is completely solved, and the more reliable sealing effect is achieved; in addition, the end screen measuring terminal is cancelled, so that the problems of connection and sealing between the end screen measuring terminal and the mounting flange do not exist, and the risk problem that the end screen lead discharges to the metal mounting flange does not exist.
The technical scheme adopted by the invention is as follows:
a mounting flange insulation structure integrated pure dry type high voltage bushing comprises a current-carrying conductor, a capacitor core, an umbrella skirt and a mounting flange, wherein the capacitor core is arranged outside the current-carrying conductor, the umbrella skirt is arranged outside the capacitor core, the mounting flange is arranged outside the capacitor core close to the tail end of the current-carrying conductor, and the mounting flange and the capacitor core are in an integrated molding structure;
the manufacturing method comprises the following steps:
(1) cutting a current-carrying conductor according to a preset length, and then polishing and cleaning the surface of the current-carrying conductor;
(2) manufacturing a capacitor core on the outer side of a current-carrying conductor in a mode of alternately winding and bonding glue-impregnated fibers and a capacitor screen, embedding and connecting a tail screen lead on a tail screen of the capacitor core, and winding the outer side of the capacitor core through the glue-impregnated fibers to form a mounting flange blank; (3) heating and curing the capacitor core;
(4) processing the mounting flange blank by the solidified capacitor core through a lathe, and forming a mounting flange after the mounting flange blank is processed through the lathe;
(5) installing an umbrella skirt on the outer side of the processed capacitor core;
(6) the head metal accessory is hermetically arranged at the head end of the current-carrying conductor, and the tail metal accessory is hermetically arranged at the tail end of the current-carrying conductor. .
As a further preferred aspect of the present invention, the skirt is a silicone rubber skirt or an epoxy resin skirt.
Preferably, a head metal fitting is attached to the head end of the current-carrying conductor, and a seal ring is provided between the head metal fitting and the current-carrying conductor and between the head metal fitting and the capacitor core.
As a further preferred aspect of the present invention, a tail metal fitting is mounted at the tail end of the current-carrying conductor, and the tail metal fitting is sealed with the current-carrying conductor and the capacitor core by a sealing ring.
As a further preferred aspect of the present invention, the end screen lead of the capacitor core is led out at the mounting flange.
As a further optimization of the method, in the step (2), the mounting flange blank is formed by uniformly winding a plurality of glass fiber roving after gum dipping and in a mutually staggered lap joint manner on the outer side of the capacitor core, and the included angle between the winding direction of the glass fiber roving and the axis of the capacitor core is gradually decreased from the innermost winding layer to the outermost winding layer.
As a further optimization of the method, the angle between the winding direction of the glass fiber twistless roving in the innermost winding layer and the axis of the capacitor core is 70 degrees; the included angle between the winding direction of the glass fiber twistless roving in the outermost winding layer and the axis of the capacitor core is 28 degrees; the winding layer and the winding layer are compacted more tightly, so that the overall structural strength of the capacitor core after solidification is improved, and the mechanical performance of the integrated structure between the mounting flange and the insulating structure capacitor core after processing is ensured.
As a further preferred step of the method, the capacitor core in step (3) is heated and cured by the following specific steps: firstly, preheating the capacitor core for 20 minutes at 85 ℃, then heating and curing for 45 minutes at 100 ℃, then heating to 145 ℃ for curing for 2.5 hours, finally heating to 170 ℃ for curing for 3.5 hours, and then preserving heat for 30 minutes at 120 ℃ to finish curing.
As a further preferred option of the method, the shed in step (5) is a silicone rubber shed, and is injected and vulcanized to the outer side of the capacitor core by adopting an integral injection molding process or is adhered to the outer side of the capacitor core by an adhesive after being vulcanized and molded by adopting a silicone rubber single shed; or the epoxy resin umbrella skirt is poured outside the capacitor core through a mould by adopting an epoxy resin pressure gel process.
The invention has the beneficial effects that: the structure of the traditional capacitor core is changed, so that the mounting flange and the capacitor core are of an integrated molding structure, the connection and sealing problems between the mounting flange and the capacitor core with an insulation structure are avoided, a cementing bonding mode is avoided, the assembly is simpler, the structure is more reliable, the problem of sealing leakage between the mounting flange and the capacitor core with the insulation structure is completely solved, and a more reliable sealing effect is achieved; in addition, the end screen measuring terminal is cancelled, so that the problems of connection and sealing between the end screen measuring terminal and the mounting flange do not exist, and the risk problem that the end screen lead discharges to the metal mounting flange does not exist.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the capacitor core of the present invention before processing;
FIG. 3 is a schematic diagram of a capacitor core according to the present invention after processing;
FIG. 4 is a schematic diagram showing an angle between a winding direction of glass fiber roving in an innermost winding layer and an axis of a capacitor core;
FIG. 5 is a schematic diagram showing an angle between a winding direction of glass fiber roving and an axis of a capacitor core in an outermost winding layer;
fig. 6 is a schematic structural view of a conventional dry high-voltage bushing;
the main reference numerals in the figures have the following meanings: 1-current-carrying conductor, 2-capacitor core, 3-mounting flange, 4-umbrella skirt, 5-head metal accessory, 6-tail metal accessory, 7-sealing ring, 8-end screen, 9-end screen lead and 11-mounting flange blank.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1: the embodiment is a pure dry-type high-voltage bushing of mounting flange insulation system integral type, including current-carrying conductor 1, electric capacity core 2, full skirt 4 and mounting flange 3, electric capacity core 2 sets up in the current-carrying conductor 1 outside, and full skirt 4 sets up in the electric capacity core 2 outside, and mounting flange 3 sets up in the electric capacity core 2 outside near 1 tail end of current-carrying conductor, and mounting flange 3 is the integrated into one piece structure with electric capacity core 2.
In this embodiment, the umbrella skirt 4 is a silicon rubber umbrella skirt, and in practical application, the umbrella skirt 4 may also be an epoxy umbrella skirt.
In the embodiment, a head metal accessory 5 is installed at the head end of the current-carrying conductor 1, and sealing rings 7 are respectively arranged between the head metal accessory 5 and the current-carrying conductor 1 and between the head metal accessory 5 and the capacitor core 2.
In the embodiment, the tail end of the current-carrying conductor 1 is provided with the tail metal attachment 6, and the tail metal attachment 6, the current-carrying conductor 1 and the capacitor core 2 are sealed through the sealing ring 7.
In the embodiment, the end screen lead 9 of the capacitor core 2 is led out from the mounting flange 3.
A manufacturing method of a mounting flange insulation structure integrated pure dry high-voltage bushing comprises the following steps:
(1) cutting the current-carrying conductor 1 according to a preset length, and then polishing and cleaning the surface of the current-carrying conductor 1;
(2) manufacturing a capacitor core 2 on the outer side of a current-carrying conductor 1 in a mode of alternately winding and bonding glue-impregnated fibers and a capacitor screen, pre-burying and connecting a tail screen lead wire 9 on a tail screen 8 of the capacitor core 2, and winding the outer side of the capacitor core 2 through the glue-impregnated fibers to form a mounting flange blank 11 as shown in figure 2;
(3) heating and curing the capacitor core 2;
(4) the solidified capacitor core 2 is processed by a mounting flange blank 11 through a lathe, and the mounting flange blank 11 is processed by the lathe to form a mounting flange 3, as shown in fig. 3;
(5) an umbrella skirt 4 is arranged on the outer side of the processed capacitor core 2;
(6) the head metal fittings 5 are hermetically arranged at the head ends of the current-carrying conductors 1, and the tail metal fittings 6 are hermetically arranged at the tail ends of the current-carrying conductors 1.
In the implementation method, the mounting flange blank 11 in the step (2) is formed by uniformly winding a plurality of glass fiber roving after gum dipping in a staggered lap joint mode on the outer side of the capacitor core 2, and the included angle between the winding direction of the glass fiber roving and the axis of the capacitor core 2 gradually decreases from the innermost winding layer to the outermost winding layer.
In the implementation method, the angle between the winding direction of the glass fiber twistless roving in the innermost winding layer and the axis of the capacitor core 2 is 70 degrees, such as the angle a shown in fig. 4; the angle between the winding direction of the glass fiber roving in the outermost winding layer and the axis of the capacitor core 2 is 28 degrees, as shown by the angle b in fig. 5; the winding layer and the winding layer are compacted more tightly, so that the overall structural strength of the capacitor core 2 after solidification is improved, and the mechanical performance of the integrated structure between the installation flange 3 and the capacitor core 2 of the insulation structure after processing is ensured.
In the implementation method, the specific steps of heating and curing the capacitor core 2 in the step (3) are as follows: firstly, preheating the capacitor core 2 at 85 ℃ for 20 minutes, then heating and curing at 100 ℃ for 45 minutes, then heating to 145 ℃ for curing for 2.5 hours, finally heating to 170 ℃ for curing for 3.5 hours, and then preserving heat at 120 ℃ for 30 minutes to finish curing.
In the implementation method, the umbrella skirt 4 in the step (5) is a silicon rubber umbrella skirt, and is injected and vulcanized to the outer side of the capacitor core 2 by adopting an integral injection molding process, and can also be adhered to the outer side of the capacitor core 2 by an adhesive after being vulcanized and molded by adopting a silicon rubber single umbrella in practical application; of course, in practical application, the shed 4 may also be an epoxy resin shed, and is poured outside the capacitor core 2 through a mold by using an epoxy resin pressure gel process.
According to the invention, the mounting flange is wound and cured in advance before the dry capacitor core is processed, and then the mounting flange is processed on a lathe according to the size requirement, so that the integration of the mounting flange and the dry capacitor core is ensured; the invention is not limited to the capacitor core, but also is suitable for the non-capacitor core without the capacitor screen; the sleeve type manufactured according to the invention is not limited to a transformer sleeve, and is also suitable for various sleeve structures such as a wall bushing, a GIS sleeve, an oil/oil sleeve and the like.
The invention changes the structure of the traditional capacitor core, so that the mounting flange and the capacitor core are of an integrated molding structure, the connection and sealing problems between the mounting flange and the capacitor core with an insulation structure do not exist, the cementing and bonding mode does not exist, the assembly is simpler, the structure is more reliable, the problem of sealing leakage between the mounting flange and the capacitor core with the insulation structure is completely solved, and the more reliable sealing effect is achieved; in addition, the end screen measuring terminal is eliminated, so that the problems of connection and sealing between the end screen measuring terminal and the mounting flange do not exist, and the risk problem that the end screen lead discharges to the metal mounting flange does not exist.
The above description is only a preferred embodiment of the present patent, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the inventive concept, and these modifications and decorations should also be regarded as the protection scope of the present patent.
Claims (9)
1. The utility model provides a pure dry-type high-voltage bushing of mounting flange insulation system integral type which characterized in that: the capacitor core is arranged outside the current-carrying conductor, the umbrella skirt is arranged outside the capacitor core, the mounting flange is arranged outside the capacitor core close to the tail end of the current-carrying conductor, and the mounting flange and the capacitor core are in an integrated molding structure;
the manufacturing method comprises the following steps:
(1) cutting the current-carrying conductor according to a preset length, and then polishing and cleaning the surface of the current-carrying conductor;
(2) manufacturing a capacitor core on the outer side of a current-carrying conductor in a mode of alternately winding and bonding glue-impregnated fibers and a capacitor screen, embedding and connecting a tail screen lead on a tail screen of the capacitor core, and winding the outer side of the capacitor core through the glue-impregnated fibers to form a mounting flange blank;
(3) heating and curing the capacitor core;
(4) processing the mounting flange blank by the solidified capacitor core through a lathe, and forming a mounting flange after the mounting flange blank is processed through the lathe;
(5) installing an umbrella skirt on the outer side of the processed capacitor core;
(6) the head metal accessory is hermetically arranged at the head end of the current-carrying conductor, and the tail metal accessory is hermetically arranged at the tail end of the current-carrying conductor.
2. A mounting flange insulation structure integrated all-dry high voltage bushing according to claim 1, wherein the shed is a silicone rubber shed or an epoxy resin shed.
3. The all-dry high-voltage bushing integrated with the mounting flange insulation structure as claimed in claim 1, wherein a head metal fitting is installed at the head end of the current-carrying conductor, and sealing rings are disposed between the head metal fitting and the current-carrying conductor and between the head metal fitting and the capacitor core.
4. A mounting flange insulation structure integrated pure dry high voltage bushing according to claim 1, wherein a tail metal fitting is mounted at the tail end of the current carrying conductor, and the tail metal fitting, the current carrying conductor and the capacitor core are sealed by a sealing ring.
5. A mounting flange insulation structure integrated pure dry high voltage bushing according to claim 1, wherein the end screen lead of the capacitor core is led out at the mounting flange.
6. The method for manufacturing the mounting flange insulation structure integrated pure dry high voltage bushing according to claim 1, wherein in the step (2), the mounting flange blank is formed by uniformly winding a plurality of glass fiber roving after dipping in glue, the glass fiber roving is mutually staggered and lapped and is uniformly wound on the outer side of the capacitor core, and an included angle between the winding direction of the glass fiber roving and the axis of the capacitor core is gradually decreased from the innermost winding layer to the outermost winding layer.
7. The manufacturing method of the mounting flange insulating structure integrated pure dry high voltage bushing as claimed in claim 6, wherein the angle between the winding direction of the glass fiber roving in the innermost winding layer and the axis of the capacitor core is 70 °; the angle between the winding direction of the glass fiber twistless roving in the outermost winding layer and the axis of the capacitor core is 28 degrees.
8. The method for manufacturing the all-dry high-voltage bushing integrated with the mounting flange insulation structure as claimed in claim 1, wherein the specific steps of heating and curing the capacitor core in step (3) are as follows: firstly, preheating the capacitor core for 20 minutes at 85 ℃, then heating and curing for 45 minutes at 100 ℃, then heating to 145 ℃ for curing for 2.5 hours, finally heating to 170 ℃ for curing for 3.5 hours, and then preserving heat for 30 minutes at 120 ℃ to finish curing.
9. The method for manufacturing the mounting flange insulating structure integrated pure dry high voltage bushing according to claim 6, wherein the shed in step (5) is a silicon rubber shed, and is injection vulcanized to the outer side of the capacitor core by adopting an integral injection molding process or is adhered to the outer side of the capacitor core by an adhesive after being vulcanization molded by adopting a silicon rubber single shed; or the epoxy resin umbrella skirt is poured outside the capacitor core through a mould by adopting an epoxy resin pressure gel process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011083172.1A CN112420290B (en) | 2020-10-12 | 2020-10-12 | Integrated pure-dry high-voltage bushing with mounting flange insulation structure and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011083172.1A CN112420290B (en) | 2020-10-12 | 2020-10-12 | Integrated pure-dry high-voltage bushing with mounting flange insulation structure and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112420290A CN112420290A (en) | 2021-02-26 |
| CN112420290B true CN112420290B (en) | 2022-09-16 |
Family
ID=74854887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011083172.1A Active CN112420290B (en) | 2020-10-12 | 2020-10-12 | Integrated pure-dry high-voltage bushing with mounting flange insulation structure and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112420290B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113643863A (en) * | 2021-05-26 | 2021-11-12 | 江苏智达高压电气有限公司 | Novel dry-type sleeve for electric power system |
| CN113936873B (en) * | 2021-11-09 | 2022-09-30 | 清华大学 | Manufacturing method of dry-type high-voltage self-uniform field sleeve based on glue-impregnated fiber process |
| CN114203370B (en) * | 2021-11-30 | 2023-12-08 | 搏世因（北京）高压电气有限公司 | Low-temperature superconductive AC/DC sleeve and manufacturing method thereof |
| CN117059352B (en) * | 2023-10-13 | 2024-01-30 | 搏世因（北京）高压电气有限公司 | Glue-immersed fiber capacitive dry sleeve and manufacturing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB618474A (en) * | 1942-03-06 | 1949-02-22 | Comp Generale Electricite | Improvements in the construction of the terminals and the like of cables |
| CN202049188U (en) * | 2011-05-13 | 2011-11-23 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Leakage current sampling device for end shield of high-voltage bushing |
| 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 |
| CN107478973A (en) * | 2017-10-10 | 2017-12-15 | 国网江苏省电力公司电力科学研究院 | A kind of Oil-impregnated Paper Condenser Bushing in History experimental model device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1186783C (en) * | 2003-01-07 | 2005-01-26 | 孙闻峰 | Dry type high-voltage capacitor core and making method thereof |
| CN2591820Y (en) * | 2003-01-07 | 2003-12-10 | 孙闻峰 | Dry type high voltage sleeves |
| CN202134291U (en) * | 2011-06-20 | 2012-02-01 | 中国西电电气股份有限公司 | Novel hollow composite insulator |
| CN203941765U (en) * | 2014-07-10 | 2014-11-12 | 南京智达电气有限公司 | A kind of condenser type dry sleeve |
| CN204407108U (en) * | 2015-03-24 | 2015-06-17 | 中瑞电气有限公司 | Use for electric locomotive DC capacitor formula sleeve pipe |
| CN104966549A (en) * | 2015-07-06 | 2015-10-07 | 苏州翰为电气科技有限公司 | Epoxy resin dry type sleeve |
| CN205862977U (en) * | 2016-06-28 | 2017-01-04 | 搏世因（北京）高压电气有限公司 | High-strength composite electric capacity molding box becomes specialized barrel |
| EP3561819B1 (en) * | 2018-04-26 | 2022-01-26 | Hitachi Energy Switzerland AG | Bushing equipped with an optical fibre |
| CN108923355A (en) * | 2018-10-12 | 2018-11-30 | 山东彼岸电力科技有限公司 | A kind of capacitive type wall bushing |
-
2020
- 2020-10-12 CN CN202011083172.1A patent/CN112420290B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB618474A (en) * | 1942-03-06 | 1949-02-22 | Comp Generale Electricite | Improvements in the construction of the terminals and the like of cables |
| CN202049188U (en) * | 2011-05-13 | 2011-11-23 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Leakage current sampling device for end shield of high-voltage bushing |
| 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 |
| CN107478973A (en) * | 2017-10-10 | 2017-12-15 | 国网江苏省电力公司电力科学研究院 | A kind of Oil-impregnated Paper Condenser Bushing in History experimental model device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112420290A (en) | 2021-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112420290B (en) | Integrated pure-dry high-voltage bushing with mounting flange insulation structure and manufacturing method thereof | |
| CN102203886B (en) | Method of manufacturing ground-burial type solid insulated transformer | |
| CN108335880A (en) | Outdoor dry-type transformer | |
| CN2591820Y (en) | Dry type high voltage sleeves | |
| CN201523206U (en) | Cable terminal head for rail traction power system cable terminal head | |
| WO2017025037A1 (en) | Insulation sleeve and insulation pipe | |
| CN104916377A (en) | Insulating bush made of thermoplastic material and production method thereof | |
| CN209357555U (en) | Integration injection silicon rubber composite insulation outdoor voltage transformer | |
| CN113593794B (en) | Automatic pressure gel pure dry type capacitor type high-voltage insulating sleeve and manufacturing method thereof | |
| CN109036808A (en) | A kind of air reactor composite insulation structure | |
| CN201303242Y (en) | Plug-in prefabricated connector for middle and low voltage power cable | |
| CN209544048U (en) | A kind of arrester | |
| CN112002504A (en) | Development method of epoxy resin impregnated glass fiber direct current sleeve | |
| CN209000646U (en) | A kind of insulating sleeve | |
| CN207529728U (en) | A kind of insulation mandrel | |
| CN211265141U (en) | Glass fiber reinforced plastic type dry-type wall bushing | |
| CN110010313A (en) | A kind of top insulation suitable for electric express locomotive | |
| WO2019105126A1 (en) | Composite insulator and method for manufacturing same, and composite casing | |
| CN210073597U (en) | Outdoor three-phase integrated current transformer with stress cone and semiconductor tube | |
| CN219676980U (en) | Casing pipe of integral injection umbrella skirt external insulation structure | |
| CN109524185B (en) | Composite insulator for station and production process thereof | |
| CN207038262U (en) | A kind of electronic current mutual inductor and its optical fiber composite insulator | |
| CN212485038U (en) | Optical fiber insulator for transformer substation | |
| CN214897922U (en) | Insulating sleeve | |
| CN215378361U (en) | Wall bushing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |