CN106848964B - A kind of 35kV all insulation enclosed busbar - Google Patents
A kind of 35kV all insulation enclosed busbar Download PDFInfo
- Publication number
- CN106848964B CN106848964B CN201611006955.3A CN201611006955A CN106848964B CN 106848964 B CN106848964 B CN 106848964B CN 201611006955 A CN201611006955 A CN 201611006955A CN 106848964 B CN106848964 B CN 106848964B
- Authority
- CN
- China
- Prior art keywords
- shell
- disc insulator
- contact tube
- column
- contact
- 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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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/06—Totally-enclosed installations, e.g. in metal casings
- H02G5/061—Tubular casings
-
- 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
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/06—Totally-enclosed installations, e.g. in metal casings
- H02G5/063—Totally-enclosed installations, e.g. in metal casings filled with oil or gas
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Installation Of Bus-Bars (AREA)
Abstract
The present invention relates to a kind of 35kV all insulation enclosed busbars, including contact tube, shell, disc insulator, spring contact, supports insulative column composition, the contact tube is located in shell, and with shell in coaxial cylindrical, both ends are inserted into spring contact, are connected with disc insulator, disc insulator installation and shell both ends, closed air chamber, interior inflatable body are provided between shell and contact tube, contact tube centre installs supports insulative column additional to support contact tube.It has the advantage that: high reliability, using gas-insulated, a possibility that greatly reducing product shelf depreciation；Long-life, extremely strong environmental suitability, space-closed are suitable for any High aititude, high salt fog, and the adverse circumstances such as peracidity considerably reduce the aging of insulating materials；Safety and environmental protection, shell external magnetic field is almost nil, to environment substantially without electromagnetic effect；Operation and maintenance are convenient, and installation is simple, break down and restore fast, faulty section can remove maintenance；It is compact-sized, occupied area can be substantially reduced.
Description
Technical field
The present invention relates to transmission of electricity structure more particularly to a kind of all insulation cast of high current power transmission and distribution transmission of electricity buses.
Background technique
Currently, 35kV tube type bus uses bare bus bar, the wrapped all-insulating tubular bus of filling type polytetrafluoroethylene tape, three
First EP rubbers or the multi-layer co-extruded insulating tube type busbar of silicon rubber and poured with epoxy resin or the automatic four class pipe of gel process of pressure
Type bus.
Wherein, for bare bus bar, be especially used for compact-sized substation in use, often can because bus it is alternate absolutely
Edge is weak and single-phase earthing or phase fault accident occurs, and poor reliability and takes up a large area.
All-insulating tubular bus wrapped for filling type polytetrafluoroethylene tape, due to using wrapped production, it is difficult to avoid layer
Between entrained air bubbles, while polytetrafluoroethylene tape is smooth causes polytetrafluoroethylene tape and shielded layer that can not keep away along the moving of bus axis
Exempt from, thus product partial discharge be difficult to it is up to standard, with operation the time limit increase, the bubble or impurity being mingled with constantly discharge, around bubble
Dielectric constantly corrode, partial discharge level runs down, until flashover breakdown, brings greatly to the safe operation of power grid
It is dangerous.
Ethylene propylene diene rubber or the multi-layer co-extruded insulating tube type busbar of silicon rubber, Chinese patent CN104392801A (are awarded
Power date of publication is 2015.03.04) a kind of coextrusion insulated tube type bus of bright rubber multi-layer of ternary second is disclosed, this structure can not
Realize that bend pipe structure extrudes, while the easy watered and wetting of shielding layer grounding line causes salt face inside tube type bus to climb electricity.In addition, with mother
Comb is further added by one layer of protecting pipe as protective layer and is difficult to adapt to the exceedingly odious outdoor environment such as high salt fog, peracidity, difficult
To guarantee 30 years service life.
For poured with epoxy resin or the automatic gel shaped tube type bus of pressure, using existing cylinder capacitive structure
Shielded layer and ground plane is arranged in form between insulating layer, as (authorization date of publication is Chinese patent CN204215799A
2015.03.18), there are problems that insulating materials and conductor material expand with heat and contract with cold it is inconsistent may cause insulating layer cracking, cause to split
It constantly discharges at seam, partial discharge level runs down, therefore possible partial discharge is exceeded at long conductor after in a few years running, and causes line
Road flashover.
Therefore, in view of the foregoing drawbacks, existing technology need to be innovated.
Summary of the invention
The purpose of the present invention is to provide a kind of 35kV all insulation enclosed busbar, by improving bus structure with reach can
By property height, the service life is long, adapts to the purpose of extraneous adverse circumstances, to solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme:
A kind of 35kV all insulation enclosed busbar, including shell, contact tube, spring contact, disc insulator, supports insulative
Column, the shell are located at outermost, are cylindric pipe structure, for protecting the high-pressure conductor of installation inside it not by any
Extraneous adverse circumstances influence, meanwhile, channel of the shell as earth-return circuit imports Arbitrary Fault electric current in earth mat；Shell
On be provided with inflation valve device, insulating gas can be filled into enclosure interior closed air chamber by inflation valve device；
The supports insulative column is integrally located at enclosure interior, and supports insulative column is fixed on shell by transition plates by inserts lower part
The shell of body pulls out at mouthful sealing plate, is used to support contact tube；The insulated column center conductor and contact tube wrapped up inside supports insulative column
Coaxially；Be conducive to electric fields uniform；Supports insulative column is internally provided with a spring touch finger, makes contact tube and the same current potential of the insulated column；
It is sealed between supports insulative column and shell by sealing element；
The disc insulator is fixed on inside the flange at shell both ends by metal insert, is not exposed in air,
For contact tube, spring touch finger to be isolated with shell and the external world, to achieve the purpose that product all insulation；
Correspondingly, the side that shell upper flange is contacted with disc insulator is provided with step, which is equipped with bolt hole,
With fixing pot type insulator；
Spring contact one end fixation connects on the center conductor of disc insulator, and other end and contact tube activity connect
It connects, inside device has guide sleeve；
The contact tube is that inside is hollow structure, is installed on enclosure interior, and is coaxial tube with shell, conductive
For pipe in insulated column center insert insertion spring contact, contact tube the selection of material can be copper tube or aluminum pipe；Preferably,
Using aluminum pipe；
Correspondingly, shell and contact tube, disc insulator, the enclosed space formed between spring contact are closing
Gas chamber；
Correspondingly, the mixed gas of compressed air, sulfur hexafluoride or sulfur hexafluoride and nitrogen can be used in insulating gas；
Correspondingly, the support of both ends disc insulator can be directly used, without installing supports insulative when contact tube is less than 5m
Column；
Correspondingly, the enclosed busbar can be directly affixed, longer enclosed busbar is formed, the enclosed busbar of lengthening can add
Dress bellows is to consider influence that shell caused by temperature expands with heat and contract with cold.
Compared with prior art, the invention has the benefit that the enclosed busbar is poured using gas-insulated principle and epoxy
Note technology, bus capacity is big, electric fields uniform, the available effective control of partial discharge；Any rugged environment condition of product adaptation；It can
It is long by property height, service life；To ambient enviroment without any electromagnetic radiation；Due to using modularized design, assembly is simple, maintenance side
Just, overall life cycle cost is low.
Detailed description of the invention
Below according to attached drawing, invention is further described in detail.
Fig. 1 is a kind of structural schematic diagram of 35kV all insulation enclosed busbar of the present invention；
Fig. 2 is structural schematic diagram when a kind of 35kV all insulation enclosed busbar conduction length of tube of the present invention is shorter；
Fig. 3 is structural schematic diagram when a kind of 35kV all insulation enclosed busbar multiple groups of the present invention install additional；
In figure:
1, disc insulator epoxy resin casting workpiece；2, disc insulator center insert；3, disc insulator connection is embedding；4, shell
Body；5, shell pulls out a mouthful sealing plate；6, transition plates；7, insulated column center insert；8, spring touch finger；9, insulated column epoxy resin casting workpiece；10,
Insulated column connection inserting part；11, contact tube；12, closed air chamber；13, spring contact；14, guide sleeve；15, inflation valve device；16,
Sealing ring；17, temperature compensation bellows.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
Embodiment 1
The present invention is further detailed below with reference to the accompanying drawings and specific embodiments.
A kind of 35kV all insulation enclosed busbar as shown in Figure 1, including shell 4, contact tube 11, spring contact 13, benzvalene form
Insulator, supports insulative column；
The shell 4 is located at outermost, is cylindric pipe structure, for protecting the high-pressure conductor of installation inside it not
It is influenced by any extraneous adverse circumstances, meanwhile, Arbitrary Fault electric current importing earth mat is worked as in channel of the shell 4 as earth-return circuit
In；It is provided with inflation valve device 15 on shell 4, insulation can be filled into 4 inside closed air chamber 12 of shell by inflation valve device 15
Gas；
The disc insulator is using in epoxy casting technique, including disc insulator epoxy resin casting workpiece 1, disc insulator
Heart inserts 2 and disc insulator connection inserting part 3, are integrally consolidated, and bending resistance and tensile capacity are strong；Disc insulator passes through basin
The insertion of formula insulator connection inserting part 3 is fixed on inside the flange at 4 both ends of shell, is used for contact tube 11, spring touch finger 8 and shell
4 are isolated with extraneous, to achieve the purpose that product all insulation；It is enclosed in disc insulator inside disc insulator center insert 2
Heart conductor；
The supports insulative column uses epoxy casting technique, including insulated column epoxy resin casting workpiece 9, insulated column center insert 7
It with insulated column connection inserting part 10, is integrally consolidated, bubble-free partial discharge is almost nil；Supports insulative column is integrally located at shell 4
Supports insulative column is fixed on shell 4 by inside, inserts lower part by transition plates 6, is used to support contact tube 11；Supports insulative column
The insulated column center conductor and contact tube 11 of inside package are coaxial, are conducive to electric fields uniform；Supports insulative column is internally provided with one
Spring touch finger 13 makes contact tube 11 and the same current potential of the insulated column；
Correspondingly, being equipped with shell between shell 4 and supports insulative column pulls out mouthful sealing plate 5, pass through sealing ring 16 between the two
It is tightly connected, transition plates 6 is fixed on shell and pulls out at mouthful sealing plate 5；
It is hollow structure that the contact tube 11, which is inside, is installed on inside shell 4, and is coaxial tube with shell 4,
Contact tube 11 passes through insulated column center insert 7 and is inserted into spring contact 13, and can move along insulated column center insert 7；Contact tube 4
The selection of material can be copper tube or aluminum pipe, and conductive length of tube is greater than 5m；
13 one end of spring contact fixation connects on the center conductor of disc insulator, and other end and contact tube 4 are living
Dynamic connection, inside device have guide sleeve 14；
Correspondingly, shell 4 and contact tube 11, disc insulator, the enclosed space formed between spring contact 13 4
For closed air chamber 12；
Correspondingly, the mixed gas of compressed air, sulfur hexafluoride or sulfur hexafluoride and nitrogen can be used in insulating gas；
Specific structure composition is as follows: spring touch finger 8 and guide sleeve 14 being housed in spring contact 13, then the spring touches
First 13 can be fixed on disc insulator center insert 2, and each part is fixed on shell 4 by disc insulator connection inserting part 3
Flange inside, on insulated column center insert 7 that then spring touch finger 8 is mounted in, supports insulative column is connected embedding by insulated column
Part 10 is fixedly arranged in transition plates 6, and transition plates 6 is fixed on shell and pulls out a mouthful flange, and it is solid by sealing ring 16 that shell pulls out mouthful sealing plate 5
It is scheduled on and pulls out a mouthful flange；Contact tube 11 passes through insulated column center insert 7 and is inserted into spring contact 13, and can touch in spring
It is stretched in first 13 to consider influence that the temperature of contact tube 11 is expanded with heat and contract with cold；Insulating gas 12 is filled with by inflating valve seat 15
In shell 4.
Embodiment 2
A kind of 35kV all insulation enclosed busbar as shown in Figure 2, including shell 4, contact tube 11, spring contact 13, benzvalene form
Insulator；11 length of contact tube is less than 5m in the structure, and disc insulator is connected directly between the two sides of contact tube 11, is not required to install additional
Insulated column, shell 4, which does not need to open up, pulls out mouth, and other structures are same as Example 1.
Embodiment 3
A kind of 35kV all insulation enclosed busbar as shown in Figure 3, including shell 4, contact tube 11, spring contact 13, benzvalene form
Insulator, supports insulative column and temperature compensation bellows 17；The structure is the package assembly of enclosed busbar, and several segments bus can directly lead to
4 flange of shell equipped with sealing ring 16 is crossed to be fixed, in shell, 4 flanges install temperature compensation bellows 17 additional and carry out temperature-compensating, with
Consider that environment temperature leads to the influence for generation of expanding with heat and contract with cold of shell；Other structures are same as Example 1.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (5)
1. a kind of 35kV all insulation enclosed busbar, including shell, contact tube, spring contact, disc insulator, supports insulative column,
It is characterized by:
The shell is located at outermost, is cylindric pipe structure, is provided with inflation valve device on shell, closes to enclosure interior
Insulating gas is filled in gas chamber；
The supports insulative column is integrally located at enclosure interior, including insulated column epoxy resin casting workpiece, insulated column center insert and insulation
Column connection inserting part, lower part are pulled out at mouthful sealing plate by the shell that transition plates is fixed on shell；The insulation wrapped up inside supports insulative column
Column center conductor and contact tube are coaxial；Supports insulative column is internally provided with a spring touch finger；Lead between supports insulative column and shell
Overstocked seals；
The disc insulator includes that disc insulator epoxy resin casting workpiece, disc insulator center insert are connected with disc insulator
Inserts is fixed on inside the flange at shell both ends, in disc insulator center insert by the insertion of disc insulator connection inserting part
Portion is enclosed with disc insulator center conductor；
Spring contact one end fixation connects on the center conductor of disc insulator, and other end is flexibly connected with contact tube,
Inside device has guide sleeve；
The contact tube is that inside is hollow structure, is installed on enclosure interior, and is coaxial tube with shell；Contact tube is worn
It crosses in insulated column center insert insertion spring contact；
The shell and contact tube, disc insulator, the enclosed space formed between spring contact are closed air chamber.
2. a kind of 35kV all insulation enclosed busbar according to claim 1, it is characterised in that: the enclosed busbar can be with
It is directly affixed, longer enclosed busbar is formed, the enclosed busbar case interface flange of lengthening installs bellows additional.
3. a kind of 35kV all insulation enclosed busbar according to claim 1, it is characterised in that: the contact tube can be along exhausted
Edge column center insert is mobile.
4. a kind of 35kV all insulation enclosed busbar according to claim 1, it is characterised in that: the disc insulator does not have
There is exposure in air.
5. a kind of 35kV all insulation enclosed busbar according to claim 1, it is characterised in that: on the shell flange with
The side of disc insulator contact is provided with step, bolt hole is provided on the step, to fixing pot type insulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611006955.3A CN106848964B (en) | 2016-11-11 | 2016-11-11 | A kind of 35kV all insulation enclosed busbar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611006955.3A CN106848964B (en) | 2016-11-11 | 2016-11-11 | A kind of 35kV all insulation enclosed busbar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106848964A CN106848964A (en) | 2017-06-13 |
| CN106848964B true CN106848964B (en) | 2019-04-05 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611006955.3A Active CN106848964B (en) | 2016-11-11 | 2016-11-11 | A kind of 35kV all insulation enclosed busbar |
Country Status (1)
| Country | Link |
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| CN (1) | CN106848964B (en) |
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| US11056862B2 (en) * | 2017-06-20 | 2021-07-06 | Mitsubishi Electric Corporation | Electrical device connector and switchgear |
| CN108418099A (en) * | 2018-03-10 | 2018-08-17 | 孙萍 | The main drum flange of high pressure GIS shells |
| CN110649543A (en) * | 2018-06-26 | 2020-01-03 | 江苏中顺电气有限公司 | Power transmission bus |
| CN108933003B (en) * | 2018-07-19 | 2024-02-27 | 河北环亚线缆有限公司 | Ultrahigh-voltage insulating gas pipeline cable |
| CN108963928B (en) * | 2018-07-20 | 2021-04-20 | 西安交通大学 | A basic unit and piping lane transmission of electricity GIL for among super/special high voltage piping lane transmission of electricity GIL |
| CN109637756A (en) * | 2018-12-21 | 2019-04-16 | 江苏南瑞恒驰电气装备有限公司 | The novel built-in disc insulator of one kind and component |
| CN110189872B (en) * | 2019-05-13 | 2020-11-06 | 平高集团有限公司 | Pipeline bus and bus unit thereof |
| CN112152174A (en) * | 2019-06-29 | 2020-12-29 | 平高集团有限公司 | Bus unit and pipeline bus |
| CN110504652B (en) * | 2019-09-20 | 2020-11-24 | 国网河南省电力公司南阳供电公司 | Flexible fixing device for metal conductor of enclosed bus of combined electrical appliance |
| CN112086786B (en) * | 2020-07-07 | 2022-03-29 | 国家电网有限公司 | Conducting rod, gas-insulated metal-enclosed switchgear and transmission line |
| CN112572995B (en) * | 2020-11-24 | 2023-04-18 | 河南平高电气股份有限公司 | Conducting rod supporting device for transporting gas insulation wall bushing |
| CN114421393B (en) * | 2021-12-16 | 2023-06-30 | 河南平高电气股份有限公司 | Common-box bus assembly method |
| CN117906889B (en) * | 2024-03-20 | 2024-05-10 | 江苏沃能电气科技有限公司 | Intelligent detection and analysis system for performance of insulating tubular bus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101404393A (en) * | 2008-11-05 | 2009-04-08 | 中国西电电气股份有限公司 | Incoming/outgoing line inflation casing tube for high-voltage switch gear |
| CN201623376U (en) * | 2010-01-26 | 2010-11-03 | 中国西电电气股份有限公司 | Three-phase common main bus interior conductor connecting structure |
| CN102136684A (en) * | 2010-12-30 | 2011-07-27 | 上海思源高压开关有限公司 | Radial compensation bus bar used for high-voltage switch |
| CN202134845U (en) * | 2011-06-29 | 2012-02-01 | 中国西电电气股份有限公司 | Incoming outgoing line inflation sleeve used for high voltage switch device in high altitude region |
| CN204333849U (en) * | 2014-11-14 | 2015-05-13 | 北京电力设备总厂有限公司 | Removable bus unit and rigid gas insulated power circuit |
-
2016
- 2016-11-11 CN CN201611006955.3A patent/CN106848964B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101404393A (en) * | 2008-11-05 | 2009-04-08 | 中国西电电气股份有限公司 | Incoming/outgoing line inflation casing tube for high-voltage switch gear |
| CN201623376U (en) * | 2010-01-26 | 2010-11-03 | 中国西电电气股份有限公司 | Three-phase common main bus interior conductor connecting structure |
| CN102136684A (en) * | 2010-12-30 | 2011-07-27 | 上海思源高压开关有限公司 | Radial compensation bus bar used for high-voltage switch |
| CN202134845U (en) * | 2011-06-29 | 2012-02-01 | 中国西电电气股份有限公司 | Incoming outgoing line inflation sleeve used for high voltage switch device in high altitude region |
| CN204333849U (en) * | 2014-11-14 | 2015-05-13 | 北京电力设备总厂有限公司 | Removable bus unit and rigid gas insulated power circuit |
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| Publication number | Publication date |
|---|---|
| CN106848964A (en) | 2017-06-13 |
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Effective date of registration: 20181011 Address after: 201605 3555, Si Xian Road, Songjiang District, Shanghai. Applicant after: Chint Electric Co., Ltd. Address before: 201600 6 6, Si brick road, Si Jing Town, Songjiang District, Shanghai Applicant before: Shanghai familiar Electric Co., Ltd. |
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