CN108963925A - A kind of combination hardware fitting - Google Patents
A kind of combination hardware fitting Download PDFInfo
- Publication number
- CN108963925A CN108963925A CN201811097857.4A CN201811097857A CN108963925A CN 108963925 A CN108963925 A CN 108963925A CN 201811097857 A CN201811097857 A CN 201811097857A CN 108963925 A CN108963925 A CN 108963925A
- Authority
- CN
- China
- Prior art keywords
- annulus
- grading ring
- aluminum stranded
- hardware fitting
- pipe mother
- 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
- 239000004020 conductor Substances 0.000 claims abstract description 46
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 45
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 45
- 230000005684 electric field Effects 0.000 claims abstract description 7
- 238000010276 construction Methods 0.000 claims abstract description 5
- 238000005452 bending Methods 0.000 claims abstract description 4
- 239000012212 insulator Substances 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 description 12
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000005428 wave function Effects 0.000 description 1
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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/01—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the form or arrangement of the conductive interconnection between the connecting locations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/03—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations
- H01R11/09—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations the connecting locations being identical
Abstract
The invention discloses a kind of combination hardware fittings, and including connection unit and set on two pipe mothers at connection unit both ends, connection unit includes two grading ring components and connector；Grading ring component is set to one end of pipe mother, and grading ring component is used for uniform electric field；Grading ring component includes the first annulus, the second annulus and the bracket for fixing the first annulus and the second annulus, and the first annulus and the second annulus are in closed；Two grading ring components are different perpendicular to the height on horizontal direction；Connector can allow two pipe mothers to move in the horizontal direction for connecting two pipe mothers, connector by the way that deformation occurs；Connector includes at least two aluminum stranded conductors, and each aluminum stranded conductor is in bending, and the both ends of each aluminum stranded conductor are separately connected two pipe mothers, and every two aluminum stranded conductors combination is in figure of eight intersection construction, and aluminum stranded conductor can be stretched freely.Using the embodiment of the present invention, it is able to achieve the flexible connection of converter station equipment room, to guarantee that change of current station equipment does not lose basic electric property.
Description
Technical field
The present invention relates to fitting technical field more particularly to a kind of combination hardware fittings.
Background technique
D.C. high voltage transmission due to having the characteristics that remote, large capacity, low-loss transmit electric power and economize the land resource,
It is developed rapidly in recent years in China.Converter station be DC transmission engineering key components, converter station generally by
Valve hall, alternating-current field and DC fields composition, there is converter valve, converter power transformer, wall bushing, breaker, disconnecting switch, ground connection to open
Numerous equipment such as pass, smoothing reactor, filter reactor, support insulator, arrester and mutual inductor.Valve hall, alternating-current field and straight
It is that female, fitting and connecting line realize electrical connection by pipe between each equipment in flow field, for being in high earthquake intensity region
Converter station for, under accidental conditions, DC fields inner tubes is female and connection gold utensil will meet electrical, current-carrying and mechanical performance
It is required that.
Under earthquake operating condition, change of current station equipment is understood since ground seismic wave function is different with the mechanical shock characteristic of itself
Equipment is caused to swing in different directions, this will generate biggish relative displacement in equipment room, at this point, the spacing meeting of two equipment
There is change by a relatively large margin, be but basically unchanged however, the pipe capital has the distance between two connecting pins, this leads to two connections
There are biggish stress between end and institute's attached device, it is easily damaged equipment or is disconnected with corresponding equipment, so as to cause valve hall
Lose its basic electric property.
Summary of the invention
The purpose of the embodiment of the present invention is that providing a kind of combination hardware fitting, it is able to satisfy the big relative displacement requirement of each equipment room,
The flexible connection and displacement decoupling for realizing equipment room, to guarantee that change of current station equipment does not lose its basic electric property.
To achieve the above object, it the embodiment of the invention provides a kind of combination hardware fitting, including connection unit and is set to described
Two pipe mothers at connection unit both ends, the connection unit include two grading ring components and connector；Wherein,
The grading ring component is set to one end of the pipe mother, corresponds with the pipe mother, and the grading ring component is used
In uniform electric field；Two grading ring components are different perpendicular to the height on horizontal direction；
The grading ring component is including the first annulus, the second annulus and for fixing first annulus and second circle
The bracket of ring, first annulus and second annulus are in closed；
The connector is female for connecting two pipes, and the connector can allow by the way that deformation occurs described in two
Pipe mother moves in the horizontal direction；
The connector includes at least two aluminum stranded conductors, and each aluminum stranded conductor is in bending, each aluminum stranded conductor
Both ends are separately connected two pipes mothers, and every two aluminum stranded conductor combinations are in figure of eight intersection construction, and the aluminum stranded conductor can be certainly
By stretching.
Compared with prior art, for combination hardware fitting disclosed by the invention for connecting each equipment in converter station, the pipe is female
One end connect the connector, the other end connects each equipment of the converter station；Wherein, the connector includes at least two
Aluminum stranded conductor, every two aluminum stranded conductor combinations are in figure of eight intersection construction, and the aluminum stranded conductor can be stretched freely, so that
Under earthquake operating condition, the connector can allow two pipe mothers to move in the horizontal direction by the way that deformation occurs.It solves
In the prior art under earthquake operating condition, there are biggish stress between two connecting pins and institute's attached device, be easily damaged equipment or
The problem of disconnecting with corresponding equipment, losing its basic electric property so as to cause valve hall, it is big to be able to satisfy each equipment room
Relative displacement requirement, the flexible connection and displacement decoupling of equipment room are realized, so that it is basic to guarantee that change of current station equipment does not lose it
Electric property.
As an improvement of the above scheme, the branch is set up between first annulus and second annulus, the branch
Frame is used to connect one end of the pipe mother, and the grading ring component is fixed on the pipe mother.
As an improvement of the above scheme, it is equipped with fixing piece for connecting the port of the pipe mother of the connection unit,
The fixing piece is cylindrical, and the port of the fixing piece and the pipe mother, which are integrally formed, to be formed；
The grading ring component is fixed on the pipe mother by the bracket for connecting the fixing piece.
As an improvement of the above scheme, first annulus and second annulus are parallel to each other.
As an improvement of the above scheme, first annulus and second annulus is equal in magnitude.
As an improvement of the above scheme, the combination hardware fitting further includes wire clamp, and the wire clamp is set to the port of the pipe mother
On, the wire clamp passes through the connection wire clamp respectively for fixing the aluminum stranded conductor, the both ends of each aluminum stranded conductor to realize
It is female to connect the pipe.
As an improvement of the above scheme, the combination hardware fitting further includes support insulator, the support insulator with it is described
Grading ring component corresponds, and the support insulator is connect with the fixing piece, to support the combination hardware fitting.
Detailed description of the invention
Fig. 1 is a kind of schematic perspective view of combination hardware fitting provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of grading ring component in a kind of combination hardware fitting provided in an embodiment of the present invention；
Fig. 3 is a kind of top view of combination hardware fitting provided in an embodiment of the present invention；
Fig. 4 is a kind of front view of combination hardware fitting provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It is a kind of schematic perspective view of combination hardware fitting provided in an embodiment of the present invention referring to Fig. 1, Fig. 1；Including connection
Unit and two pipe mothers set on the connection unit both ends, the connection unit include two grading ring components and connector；
Wherein,
The grading ring component is set to one end of the pipe mother, corresponds with the pipe mother, and the grading ring component is used
In uniform electric field；
The grading ring component is including the first annulus, the second annulus and for fixing first annulus and second circle
The bracket of ring, first annulus and second annulus are in closed；
The connector is female for connecting two pipes, and the connector can allow by the way that deformation occurs described in two
Pipe mother moves in the horizontal direction；
The connector includes at least two aluminum stranded conductors, and each aluminum stranded conductor is in bending, each aluminum stranded conductor
Both ends are separately connected two pipes mothers, and every two aluminum stranded conductor combinations are in figure of eight intersection construction, and the aluminum stranded conductor can be certainly
By stretching.
Specifically, as shown in Figure 1, described two pipe mothers are respectively pipe mother 1 and pipe mother 5, described two grading ring components point
Not Wei grading ring component 2 and grading ring component 4, the grading ring component 2 is set to one end of the pipe mother 1, with pipe mother 1 one
One is corresponding, and the grading ring component 2 is used for uniform electric field；The connector 3 is for connecting the pipe mother 1 and the pipe mother 5, institute
Stating connector 3 can allow the pipe mother 1 and the pipe mother 5 to move in the horizontal direction by the way that deformation occurs, for example lean on relatively
Closely or it is relatively distant from.
The other end of the pipe mother 1 is used to connect the equipment in converter station, such as smoothing reactor；The pipe mother's 5 is another
One end is used to connect the equipment in converter station, such as filter, thus will be each in the converter station by the combination hardware fitting
A equipment connection.
Preferably, the aluminum stranded conductor in the connector 3 generally comprises 4~6, the aluminum stranded conductor as current-carrying conductor
Particular number and type determined by the maximum current-carrying of the pipe mother.In the case where earthquake conditions do not occur, i.e., the described combination hardware fitting
When under nominal situation, each aluminum stranded conductor is in serpentine, to be in " 8 " word cross knot when two aluminum stranded conductor combinations
Structure, the both ends of each aluminum stranded conductor are separately connected the pipe mother 1 and the pipe mother 5.
Preferably, (the structure phase of the structure of another grading ring component 2 and grading ring component 4 by taking grading ring component 4 as an example
Together), referring to fig. 2, Fig. 2 is the structural schematic diagram of grading ring component in a kind of combination hardware fitting provided in an embodiment of the present invention；It is described
Grading ring component 4 is including the first annulus 41, the second annulus 43 and for fixing first annulus 41 and second annulus 43
Bracket 42；Wherein,
The bracket 42 is set between first annulus 41 and second annulus 43, and the bracket 42 is for connecting institute
The grading ring component 4 is fixed on the pipe mother 5 by the one end for stating pipe mother 5；First annulus 41 and second circle
Ring 43 is in closed.The grading ring component 4 is used to improve the electric field strength distortion of the high voltage of junction, guarantees surrounding electricity
Field distribution is uniform.
Preferably, fixing piece 6, the fixing piece 6 are equipped with for connecting the port of the pipe mother 5 of the connection unit
Cylindrical, the port of the fixing piece 6 and the pipe mother 5, which are integrally formed, to be formed；The bracket 42 is for connecting the fixation
The grading ring component 4 is fixed on the pipe mother 5 by part 6.
First annulus 41 and second annulus 43 are parallel to each other, first annulus 41 and second annulus 43
It is equal in magnitude, the grading ring component 2 and the grading ring component 4 are different perpendicular to the height on horizontal direction.
The i.e. described grading ring component 2 and the grading ring component 4 intersection are staggered, to will not occur when relatively close under earthquake operating condition
Collision.
Preferably, referring to fig. 2, the combination hardware fitting further includes wire clamp 7, and the wire clamp 7 is set to the port of the pipe mother 5
On, the wire clamp 7 is used to fix the aluminum stranded conductor (wire clamp 7 identical with female 5 structures of the pipe also is provided on the pipe mother 1),
The both ends of each aluminum stranded conductor pass through the connection wire clamp 7 respectively to realize the connection pipe mother 1 and the pipe mother 5.
Preferably, the combination hardware fitting further includes support insulator, the support insulator and the grading ring component one
One is corresponding, and the support insulator is connect with the fixing piece 6, to support the combination hardware fitting.
Referring to Fig. 3~4, in normal conditions, the aluminum stranded conductor horizontal length for connecting the pipe mother 1 and the pipe mother 5 is L1.
When earthquake occurs, referring to Fig. 3, when the pipe mother 1 and the pipe mother 5 are relatively distant from, the pipe mother 1 and the pipe are female
5 equipment connected are relatively distant under the action of reversed earthquake directed force F 1 and F2.At this point, by converter station equipment it is flat
It moves, the pipe mother 1, the wire clamp connecting with the pipe mother 1 and the grading ring component 2 can be driven to move to the direction F1, the pipe
Mother 5, the wire clamp connecting with the pipe mother 5 and the grading ring component 4 are moved to the direction F2.The aluminum stranded conductor is in horizontal distance
Length can rise to 2 π r1+2d1 (assuming that data, the specific length and peace for extending aluminum stranded conductor when data reference is embodied
Initial configuration when dress), i.e., the described aluminum stranded conductor can stretchable length maximum can under opposite nominal situation under this earthquake operating condition
To increase by 2 π r1+2d1-L1, by adjusting the length of the aluminum stranded conductor, the equipment room that can meet under different earthquake operating condition is horizontal
Relative displacement requirement.
When earthquake occurs, referring to fig. 4, pipe mother 1 and when relatively close pipe mother 5, the pipe mother 1 and the pipe are female
5 change of current station equipments connected are relatively close under the action of opposition F3 and F4.At this point, pass through the equipment of converter station
Translation can drive the pipe mother 1, the wire clamp connecting with the pipe mother 1 and the grading ring component 2 to move to the direction F3, described
Pipe mother 5, the wire clamp connecting with the pipe mother 5 and the grading ring component 4 are moved to the direction F4.As seen from Figure 4, described to press
Ring assemblies 2 and the grading ring component 4 height in vertical direction are different, are interspersed, for the grading ring component 1,
The first annulus above is d5 at a distance from the pipe mother 1, and the first annulus below is d4 at a distance from the pipe mother 1；For
The grading ring component 4, the first annulus above are d4 at a distance from the pipe mother 5, the first annulus and the pipe mother 5 below
Distance be d5；D3 is the height (wherein, d3 < d4-d5) in the vertical direction of first annulus.Due to d4 > d5+d3,
When the equipment that the pipe mother 1 and the pipe mother 5 are connected is relatively close under this earthquake operating condition, the grading ring component can guarantee
2 and the grading ring component 4 do not contact, the grading ring component 2 and the grading ring component 4 close to each other will not be damaged.
Under this earthquake operating condition (the pipe mother 1 and pipe mother 5 are relatively close), the aluminum stranded conductor is long in horizontal distance
Degree can be compressed to L1-r2 (assuming that data, when specific compressed data is with reference to specific implementation when the length and installation of aluminum stranded conductor
Initial configuration), wherein r2 is the outer radius of second annulus, i.e., the described aluminum stranded conductor can be under this earthquake operating condition relatively just
It is that r2 can meet under different earthquake operating condition by adjusting its length that stretchable length maximum, which can reduce distance, under normal operating condition
Equipment room horizontal relative displacement requirement.
The embodiment of the present invention realizes the flexible connection of equipment room by aluminum stranded conductor fitting and displacement decouples, and solves highland
Horizontal big displacement demand under the conditions of shake in DC fields between equipment.Aluminum stranded conductor is that the connection of equipment room provides in the horizontal direction
Sufficiently large displacement demand is, it can be achieved that stretching out and being inwardly compressed；Grading ring component is guaranteeing articulated part electric field point
Cloth is uniform, meets engine request, and guarantees not to be in contact when left and right sides grading ring component is close to each other in the horizontal direction；
Wire clamp secures aluminum stranded conductor, and completes the connection between pipe mother, and pipe mother is for connecting distinct device.
Compared with prior art, combination hardware fitting disclosed by the invention solves in the prior art under earthquake operating condition, and two
There are biggish stress between connecting pin and institute's attached device, it is easily damaged equipment or is disconnected with corresponding equipment, so as to cause
Valve hall loses the problem of its basic electric property, is able to satisfy the big relative displacement requirement of each equipment room, realizes the soft of equipment room
Property connection and displacement decoupling, to guarantee that change of current station equipment does not lose its basic electric property.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (7)
1. a kind of combination hardware fitting, which is characterized in that including connection unit and set on two pipe mothers at the connection unit both ends, institute
Stating connection unit includes two grading ring components and connector；Wherein,
The grading ring component is set to one end of the pipe mother, corresponds with the pipe mother, and the grading ring component is for equal
Even electric field；Two grading ring components are different perpendicular to the height on horizontal direction；
The grading ring component includes the first annulus, the second annulus and for fixing first annulus and second annulus
Bracket, first annulus and second annulus are in closed；
The connector is female for connecting two pipes, and the connector can allow two pipes female by the way that deformation occurs
It moves in the horizontal direction；
The connector includes at least two aluminum stranded conductors, and each aluminum stranded conductor is in bending, the both ends of each aluminum stranded conductor
It is female to be separately connected two pipes, every two aluminum stranded conductor combinations are in figure of eight intersection construction, and the aluminum stranded conductor can freely be stretched
Directly.
2. combination hardware fitting as described in claim 1, which is characterized in that the branch is set up in first annulus and described second
Between annulus, the bracket is used to connect one end of the pipe mother, and the grading ring component is fixed on the pipe mother.
3. combination hardware fitting as claimed in claim 2, which is characterized in that for connecting the end of the pipe mother of the connection unit
Mouth is equipped with fixing piece, and the fixing piece is cylindrical, and the port of the fixing piece and the pipe mother, which are integrally formed, to be formed；
The grading ring component is fixed on the pipe mother by the bracket for connecting the fixing piece.
4. combination hardware fitting as described in claim 1, which is characterized in that first annulus and second annulus are mutually flat
Row.
5. combination hardware fitting as described in claim 1, which is characterized in that the size phase of first annulus and second annulus
Deng.
6. combination hardware fitting as described in claim 1, which is characterized in that the combination hardware fitting further includes wire clamp, and the wire clamp is set
In on the port of the pipe mother, for the wire clamp for fixing the aluminum stranded conductor, the both ends of each aluminum stranded conductor pass through company respectively
The wire clamp is connect to realize that the connection pipe is female.
7. combination hardware fitting as claimed in claim 3, which is characterized in that the combination hardware fitting further includes support insulator, described
Support insulator and the grading ring component correspond, and the support insulator is connect with the fixing piece, described in support
Combination hardware fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811097857.4A CN108963925B (en) | 2018-09-20 | 2018-09-20 | Combined hardware fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811097857.4A CN108963925B (en) | 2018-09-20 | 2018-09-20 | Combined hardware fitting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108963925A true CN108963925A (en) | 2018-12-07 |
| CN108963925B CN108963925B (en) | 2024-02-13 |
Family
ID=64471639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811097857.4A Active CN108963925B (en) | 2018-09-20 | 2018-09-20 | Combined hardware fitting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108963925B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112542812A (en) * | 2020-12-04 | 2021-03-23 | 江苏双汇电力发展股份有限公司 | Large-current measurement electric power fitting for extra-high voltage direct current transmission project and installation and maintenance method thereof |
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| CN207251137U (en) * | 2017-10-09 | 2018-04-17 | 南方电网科学研究院有限责任公司 | A kind of converter station valve hall has with pipe capital |
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| US3496719A (en) * | 1965-12-01 | 1970-02-24 | Mario Zaltron | Extensible metal watch strap |
| JPH0566095A (en) * | 1991-04-09 | 1993-03-19 | Akutoronikusu Kk | Heat joint device and manufacture thereof |
| JPH1155842A (en) * | 1997-08-04 | 1999-02-26 | Hitachi Cable Ltd | Compression joint for wire having noncircular cross-section |
| JP2000118880A (en) * | 1998-10-10 | 2000-04-25 | Yoshiaki Masuda | Coated body for providing extensibility for linear electric cord, and coated body mounting tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112542812A (en) * | 2020-12-04 | 2021-03-23 | 江苏双汇电力发展股份有限公司 | Large-current measurement electric power fitting for extra-high voltage direct current transmission project and installation and maintenance method thereof |
| CN112542812B (en) * | 2020-12-04 | 2022-04-05 | 江苏双汇电力发展股份有限公司 | Heavy current measurement electric power fitting and installation and maintenance method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108963925B (en) | 2024-02-13 |
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