CN107978441A - GIS current transformers and its shielding cylinder - Google Patents
GIS current transformers and its shielding cylinder Download PDFInfo
- Publication number
- CN107978441A CN107978441A CN201711108820.2A CN201711108820A CN107978441A CN 107978441 A CN107978441 A CN 107978441A CN 201711108820 A CN201711108820 A CN 201711108820A CN 107978441 A CN107978441 A CN 107978441A
- Authority
- CN
- China
- Prior art keywords
- shielding
- shielding cylinder
- ring
- current transformers
- seat
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
-
- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
Abstract
The present invention relates to a kind of GIS current transformers and its shielding cylinder.The GIS current transformers include the shielding cylinder and ring shielding seat being connected with each other, the outer circumferential surface of the shielding cylinder connecting pin is equipped with annular groove, it is interior equipped with the threaded fastener being used for and the axial block of the cell wall of annular groove along shielding cylinder coordinates circumferentially arranged with threaded hole corresponding with ring groove position, threaded hole on the ring shielding seat.The GIS current transformers include the shielding cylinder and ring shielding seat being connected with each other, annular groove is set on the outer circumferential surface of shielding cylinder connecting pin, the threaded hole set on ring shielding seat is corresponding with ring groove position, the threaded fastener for being used for coordinating with the axial block of the cell wall of annular groove along shielding cylinder is equipped with threaded hole, even if the threaded hole skewness on ring shielding seat, nor affects on the axial restraint of ring shielding seat and shielding cylinder；In addition, the screw thread of threaded hole is from torque, it is not easy to is damaged.
Description
Technical field
The present invention relates to a kind of GIS current transformers and its shielding cylinder.
Background technology
Current transformer is essential important spare part in GIS products.Notification number is CN203118757U, the day for announcing
A kind of GIS Current Transformers are disclosed for the Chinese patent document of 2013.08.07, as shown in Figure 1, the GIS Current Mutual Inductances
Device includes current shielding cylinder 2, Primary Conductor 9 and current coil 10, and shielding cylinder 2 is connected with shielding case, shielding case forms ring-shaped screen
Seat 3 is covered, Primary Conductor 9 is passed through from the axle center of shielding cylinder 2, and current coil 10 is sleeved on the outer wall of shielding cylinder.
At present, as shown in Figure 2 to Figure 3, GIS is typically connected in the shielding cylinder 2 of current transformer 1 with ring shielding seat 3
Land in being set on the inner wall at end, ring shielding seat coordinates with interior land along the axial block of shielding cylinder, on the barrel of shielding cylinder 2
It is machined with uniformly distributed threaded hole, processing through hole corresponding with the threaded hole on shielding cylinder on ring shielding seat, with screw 4 by annular
Shielding seat 3 is connected on shielding cylinder 2.But shielding cylinder 2 is spinning part, mismachining tolerance is big, the screw thread processed on shielding cylinder 2
Hole is not easy to be aligned with the threaded hole on ring shielding seat 3, causes ring shielding seat and shielding cylinder assembly connection relatively difficult；Separately
Outside, shielding cylinder is aluminum alloy material, and the effective length of threaded hole is shorter, and above-mentioned connection mode screw 4 is not easy to fasten, and is transported in GIS
Threaded hole is easily compromised in defeated and operational process.
The content of the invention
It is an object of the invention to provide a kind of connection structure at GIS switchgears shielding end, GIS in the prior art is solved
The problem of threaded hole processed on the shielding cylinder of current transformer is not easy to be aligned with the threaded hole on ring shielding seat；This hair
Bright purpose, which also resides in, provides a kind of shielding cylinder of GIS current transformers.
To achieve the above object, the technical solution of GIS current transformers of the present invention is：
Technical solution 1：GIS current transformers, including the shielding cylinder of interconnection and ring shielding seat, the shielding cylinder connecting pin
Outer circumferential surface be equipped with annular groove, circumferentially arranged with threaded hole corresponding with ring groove position on the ring shielding seat, in threaded hole
Equipped with the threaded fastener coordinated for axial block of the cell wall with annular groove along shielding cylinder.Its advantage is：The GIS electric currents
Mutual inductor includes the shielding cylinder and ring shielding seat being connected with each other, and annular groove, ring-shaped screen are set on the outer circumferential surface of shielding cylinder connecting pin
Cover that the threaded hole set on seat is corresponding with ring groove position, be equipped with threaded hole and be used to keep off along the axial direction of shielding cylinder with the cell wall of annular groove
The threaded fastener only coordinated, even if the threaded hole skewness on ring shielding seat, nor affects on ring shielding seat and shielding
The axial restraint of cylinder；In addition, the screw thread of threaded hole is from torque, it is not easy to is damaged.
Technical solution 2：On the basis of technical solution 1, the threaded fastener has the inserted terminal in insertion annular groove, institute
State the slot bottom that inserted terminal reaches the annular groove.Its advantage is：Threaded fastener has the inserted terminal in insertion annular groove, grafting
End reaches the slot bottom of the annular groove, ensure that the reliability of ring shielding seat axially position.
Technical solution 3：On the basis of technical solution 1, the outer circumferential surface of the shielding cylinder is equipped with outer land, outer land handle
Shielding cylinder is divided into major diameter section and path section, and stepped hole is equipped with the ring shielding seat, and the major diameter section adaptation of stepped hole is socketed in
In the path section of shielding cylinder.
Technical solution 4：On the basis of technical solution 3, between the end face of the ring shielding seat connecting pin and outer land
It is spaced.
Technical solution 5：On the basis of technical solution 3 or 4, the radial dimension of the ring shielding seat connecting pin and shielding
The radial dimension of the major diameter section of cylinder is identical.Its advantage is：The radial dimension of ring shielding seat connecting pin and shielding cylinder it is big
The radial dimension of footpath section is identical, reduces the space shared by ring shielding seat.
Technical solution 6：On the basis of any one of technical solution 1 to 4, the threaded fastener includes stud, on stud
Equipped with the locking mechanism being adapted to for stud.
Technical solution 7：On the basis of technical solution 6, the locking mechanism is locking nut.
The technical solution of the shielding cylinder of GIS current transformers of the present invention is：
Technical solution 1：The shielding cylinder end of GIS current transformers is connected with ring shielding seat, the shielding cylinder connecting pin it is outer
Side face is equipped with annular groove, circumferentially arranged with threaded hole corresponding with ring groove position on the ring shielding seat, is equipped with threaded hole
The threaded fastener that axial block for the cell wall with annular groove along shielding cylinder coordinates.
Technical solution 2：On the basis of technical solution 1, the threaded fastener has the inserted terminal in insertion annular groove, institute
State the slot bottom that inserted terminal reaches the annular groove.
Technical solution 3：On the basis of technical solution 1, the outer circumferential surface of the shielding cylinder is equipped with outer land, outer land handle
Shielding cylinder is divided into major diameter section and path section, and stepped hole is equipped with the ring shielding seat, and the major diameter section adaptation of stepped hole is socketed in
In the path section of shielding cylinder.
Technical solution 4：On the basis of technical solution 3, between the end face of the ring shielding seat connecting pin and outer land
It is spaced.
Technical solution 5：On the basis of technical solution 3 or 4, the radial dimension of the ring shielding seat connecting pin and shielding
The radial dimension of the major diameter section of cylinder is identical.Its advantage is：The radial dimension of ring shielding seat connecting pin and shielding cylinder it is big
The radial dimension of footpath section is identical, reduces the space shared by ring shielding seat.
Technical solution 6：On the basis of any one of technical solution 1 to 4, the threaded fastener includes stud, on stud
Equipped with the locking mechanism being adapted to for stud.
Technical solution 7：On the basis of technical solution 6, the locking mechanism is locking nut.
Brief description of the drawings
Fig. 1 is structural representation Fig. 1 of GIS Current Transformers in the prior art；
Fig. 2 is structural representation Fig. 2 of GIS Current Transformers in the prior art；
Fig. 3 is the partial enlarged view of A in Fig. 2；
Fig. 4 is the structure diagram for the connection structure that GIS switchgears of the present invention shield end.
Description of reference numerals：1. mutual inductor body；2. shielding cylinder；3. ring shielding seat；4. screw；5. stud；6. locking
Nut；7. annular groove；8. interval；9. Primary Conductor；10. current coil.
Embodiment
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
The embodiment 1 of GIS current transformers of the present invention, as shown in figure 4, invention GIS current transformers include mutual inductor
Body 1, mutual inductor body 1 include the shielding cylinder 2 and ring shielding seat 3 being connected with each other, are set on the outer circumferential surface of 2 connecting pin of shielding cylinder
There is an annular groove 7, along the threaded hole being circumferentially with 7 position correspondence of annular groove of ring shielding seat 3, threaded hole edge on ring shielding seat 3
Shielding cylinder 2 is provided at circumferentially spaced, and the quantity of threaded hole is 4, is equipped with and is used for the cell wall of annular groove along shielding cylinder 2 in threaded hole
The threaded fastener that coordinates of axial block, threaded fastener includes stud 5, and stud 5 is equipped with the lock for being adapted to stud 5
Locking structure, locking mechanism are locking nut 6, and stud 5 has the inserted terminal in insertion annular groove 7, and inserted terminal reaches the groove of annular groove 7
Bottom.
The outer circumferential surface of shielding cylinder 2 is equipped with outer land, and shielding cylinder 2 is divided into major diameter section and path section, ring-shaped screen by outer land
Cover and ladder hole section is equipped with seat 3, the major diameter section adaptation of ladder hole section is socketed in the path section of shielding cylinder 2, and ring shielding seat 3 connects
Connect spaced 8 between the end face at end and outer land, the radial dimension of 3 connecting pin of ring shielding seat and the major diameter section of shielding cylinder 2
Radial dimension it is identical.
The shielding cylinder 2 and ring shielding seat 3 of GIS current transformers of the present invention are when being attached, in 2 path section of shielding cylinder
Suitable position processing annular groove 7, circumferential processing and four spiral shells of annular groove 7 position correspondence of the ring shielding seat 3 along ring shielding seat 3
Pit, the major diameter section adaptation of ladder hole section is socketed in the path section of shielding cylinder 2, makes the bottom end face and shielding cylinder of major diameter section
2 end face is combined closely, and finally, the stud 5 of threaded fastener is screwed into the threaded hole of ring shielding seat 3 and is inserted into shielding cylinder 2
Annular groove 7 slot bottom, then with locking nut 6 lock stud 5.Annular groove 7 is set on the shielding cylinder 2 of GIS current transformers of the present invention,
The position correspondence of the threaded hole and annular groove 7 on ring shielding seat 3 is only needed, stud 5 carries out axially position to ring shielding seat 3, i.e.,
Make threaded hole skewness, nor affect on the assembly connection of ring shielding seat 3 and shielding cylinder 2.
The embodiment 2 of GIS current transformers of the present invention, and the difference is that only for embodiment 1, does not set on shielding cylinder 2
Outer land is put, ladder hole section is set in ring shielding seat 3, the major diameter section adaptation of stepped hole is socketed on shielding cylinder 2, ring shielding
The outside diameter of 3 connecting pins of seat is more than the outside diameter of shielding cylinder 2.But the size of this setup ring shielding seat 3 is larger.
The embodiment 3 of GIS current transformers of the present invention, and the difference is that only for embodiment 1, ring shielding seat 3
Interval 8 is not provided between upper surface and outer land.
The embodiment 4 of GIS current transformers of the present invention, with the difference is that only for embodiment 1, ring shielding seat 3 connects
The radial dimension for connecing end is more than the radial dimension of shielding cylinder 2.
The embodiment 5 of GIS current transformers of the present invention, with the difference is that only for embodiment 1, threaded fastener is inserted
The slot bottom that end does not reach annular groove 7 is connect, can also realize the axially position of ring shielding seat 3.
The embodiment 6 of GIS current transformers of the present invention, with the difference is that only for embodiment 1, threaded fastener is tight
Determine screw.
In other embodiments, the threaded hole on ring shielding seat can be provided at circumferentially spaced four along ring shielding seat
More than, such as six or eight threaded holes are set on ring shielding seat, it can ensure that ring shielding seat is assembled with shielding cylinder
The reliability of connection.
In other embodiments, the threaded hole on ring shielding seat can be provided at circumferentially spaced two along ring shielding seat
Or three, but threaded hole setting is fewer, threaded fastener setting is fewer, and GIS current transformers are in GIS switchgears
Assembly connection is less reliable in operation or course of conveying.
The embodiment of the shielding cylinder of GIS current transformers of the present invention, the shielding cylinder of the GIS current transformers and above-mentioned hair
The structure of the shielding cylinder of any embodiment of bright GIS current transformers is identical, is not repeated to illustrate.
Claims (10)
1.GIS current transformers, including the shielding cylinder of interconnection and ring shielding seat, it is characterised in that：The shielding cylinder connects
The outer circumferential surface for connecing end is equipped with annular groove, circumferentially arranged with threaded hole corresponding with ring groove position, screw thread on the ring shielding seat
The threaded fastener for being used for coordinating with the axial block of the cell wall of annular groove along shielding cylinder is equipped with hole.
2. GIS current transformers according to claim 1, it is characterised in that：The threaded fastener has insertion annular groove
Interior inserted terminal, the inserted terminal reach the slot bottom of the annular groove.
3. GIS current transformers according to claim 1, it is characterised in that：The outer circumferential surface of the shielding cylinder is equipped with outer
Shielding cylinder is divided into major diameter section and path section, stepped hole, the major diameter of stepped hole is equipped with the ring shielding seat by land, outer land
Section adaptation is socketed in the path section of shielding cylinder.
4. GIS current transformers according to claim 3, it is characterised in that：The end face of the ring shielding seat connecting pin
It is spaced between outer land.
5. the GIS current transformers according to claim 3 or 4, it is characterised in that：The footpath of the ring shielding seat connecting pin
It is identical with the radial dimension of the major diameter section of shielding cylinder to size.
6. GIS current transformers according to any one of claims 1 to 4, it is characterised in that：The threaded fastener includes
Stud, stud are equipped with the locking mechanism for being used for stud adaptation.
7. GIS current transformers according to claim 6, it is characterised in that：The locking mechanism is locking nut.
The shielding cylinder of 8.GIS current transformers, the end of shielding cylinder are connected with ring shielding seat, it is characterised in that：The shielding
The outer circumferential surface of cylinder connecting pin is equipped with annular groove, circumferentially arranged with threaded hole corresponding with ring groove position on the ring shielding seat,
The threaded fastener for being used for coordinating with the axial block of the cell wall of annular groove along shielding cylinder is equipped with threaded hole.
9. the shielding cylinder of GIS current transformers according to claim 8, it is characterised in that：The threaded fastener has
The inserted terminal being inserted into annular groove, the inserted terminal reach the slot bottom of the annular groove.
10. the shielding cylinder of GIS current transformers according to claim 8, it is characterised in that：The outer circumferential surface of the shielding cylinder
Outer land is equipped with, shielding cylinder is divided into major diameter section and path section, stepped hole, ladder are equipped with the ring shielding seat by outer land
The major diameter section adaptation in hole is socketed in the path section of shielding cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711108820.2A CN107978441A (en) | 2017-11-11 | 2017-11-11 | GIS current transformers and its shielding cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711108820.2A CN107978441A (en) | 2017-11-11 | 2017-11-11 | GIS current transformers and its shielding cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107978441A true CN107978441A (en) | 2018-05-01 |
Family
ID=62013230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711108820.2A Pending CN107978441A (en) | 2017-11-11 | 2017-11-11 | GIS current transformers and its shielding cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107978441A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113871176A (en) * | 2021-08-25 | 2021-12-31 | 河南平高电气股份有限公司 | External current transformer and GIS |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201898025U (en) * | 2010-11-04 | 2011-07-13 | 平高集团有限公司 | Current transformator and shielding case |
| CN202196659U (en) * | 2011-07-18 | 2012-04-18 | 平高集团有限公司 | Electronic type current transformer and its outer screen shield |
| CN102930967A (en) * | 2012-10-30 | 2013-02-13 | 中国西电电气股份有限公司 | Bundled current transformer for GIS and manufacturing method of transformer |
| EP2645384A1 (en) * | 2012-03-27 | 2013-10-02 | Siemens Aktiengesellschaft | Transformer and method for manufacturing a transformer |
| CN207425605U (en) * | 2017-11-11 | 2018-05-29 | 河南森源电气股份有限公司 | A kind of GIS current transformers and its shielding cylinder |
-
2017
- 2017-11-11 CN CN201711108820.2A patent/CN107978441A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201898025U (en) * | 2010-11-04 | 2011-07-13 | 平高集团有限公司 | Current transformator and shielding case |
| CN202196659U (en) * | 2011-07-18 | 2012-04-18 | 平高集团有限公司 | Electronic type current transformer and its outer screen shield |
| EP2645384A1 (en) * | 2012-03-27 | 2013-10-02 | Siemens Aktiengesellschaft | Transformer and method for manufacturing a transformer |
| CN102930967A (en) * | 2012-10-30 | 2013-02-13 | 中国西电电气股份有限公司 | Bundled current transformer for GIS and manufacturing method of transformer |
| CN207425605U (en) * | 2017-11-11 | 2018-05-29 | 河南森源电气股份有限公司 | A kind of GIS current transformers and its shielding cylinder |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113871176A (en) * | 2021-08-25 | 2021-12-31 | 河南平高电气股份有限公司 | External current transformer and GIS |
| CN113871176B (en) * | 2021-08-25 | 2024-04-05 | 河南平高电气股份有限公司 | External current transformer and GIS |
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