CN206163303U - Draw bail is wrapped to oily inverted type current transformer major insulation - Google Patents
Draw bail is wrapped to oily inverted type current transformer major insulation Download PDFInfo
- Publication number
- CN206163303U CN206163303U CN201621236873.3U CN201621236873U CN206163303U CN 206163303 U CN206163303 U CN 206163303U CN 201621236873 U CN201621236873 U CN 201621236873U CN 206163303 U CN206163303 U CN 206163303U
- Authority
- CN
- China
- Prior art keywords
- major insulation
- fairlead
- wrapped
- ring portion
- insulation
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a draw bail is wrapped to oily inverted type current transformer major insulation belongs to the mutual -inductor and makes technical field. Technical scheme is: set up one shield cover (6) outside secondary winding (7), shield cover (6) and fairlead (1) reliable hookup, fairlead and ring portion set up two owner's screens, and shield cover (6) constitute the owner with fairlead (1) and shield one, connect the electronegative potential, and lead part branch major insulation and ring portion major insulation outermost position set up the owner and shield two (4), connect the high potential, major insulation (2) are wrapped to the fairlead, and ring portion major insulation is wrapped through screw thread and shield cover (6) hookup after wrapping major insulation together again to the fairlead, be equipped with a plurality of ends screen (3) partial pressure structure in the lead part branch major insulation to reserve length and equal the nevertheless echelonment ladder poor (5) of thickness imbalance, couple with ring portion major insulation. The utility model discloses a positive effect: lead part branch major insulation adopts the machine to wrap, and improved and wrapped the quality and wrap efficiency, simple structure, technology is reasonable, improves the overall product quality.
Description
Technical field
This utility model is related to a kind of oil-immersed inverted current transformer major insulation wrapping draw bail, belongs to transformer system
Make technical field.
Background technology
Oil-immersed current transformer is divided into two kinds of oil immersed erected current transformer and oil-immersed inverted current transformer, oil
Leaching vertical current transformer major insulation is wrapped up outside first winding, and first winding is generally " u "-shaped, and major insulation is wrapped up by machine
Device is completed.Oil-immersed inverted current transformer major insulation is wrapped up outside Secondary Winding, generally manual wrapping, wraps up efficiency
Low, quality is unstable.
Utility model content
The purpose of this utility model is to provide a kind of oil-immersed inverted current transformer major insulation wrapping draw bail, lead
Part major insulation is wrapped up using machine, improves wrapping quality and wrapping efficiency, simple structure, rational technology, improves product whole
Weight, solves produced problem in background technology.
Technical solutions of the utility model：
A kind of oil-immersed inverted current transformer major insulation wraps up draw bail, comprising fairlead, major insulation, end screen, master
Screen, radome and Secondary Winding, arrange a radome, radome and fairlead positive connection outside Secondary Winding；Fairlead
Two main screens are set with ring portion, radome constitutes main screen one, connects electronegative potential with fairlead, and lead portion major insulation and ring portion master are exhausted
Edge outermost position arranges main screen two, connects high potential；Fairlead wraps up lead portion major insulation, and wrapping lead portion master is exhausted for fairlead
It is linked together with radome by screw thread after edge, then wraps up ring portion major insulation；Lead portion major insulation is provided with multiple end screens
Partial-pressure structure, and reserve equal length but the unequal stepped ladder of thickness is poor, coupled with ring portion major insulation.
The lead portion major insulation, can be wrapped up with whole cable paper, it is also possible to banded cable or crimped paper band half lap
Wrapping.
Oil-immersed inverted current transformer major insulation is wrapped up, and a point two parts are carried out：The wrapping of lead portion major insulation is using whole
Cable paper wrapping is opened, or cable paper band or crimped paper band half lap are wrapped up, and are machine wrapping；The wrapping of lead portion major insulation is completed
Afterwards, then ring portion major insulation wrapping is carried out, the wrapping of ring portion major insulation is entered using machine or manual wrapping with lead portion major insulation
Row connection；Lead portion major insulation, using multiple end screen partial-pressure structures, and reserves equal length but thickness is unequal stepped
Ladder is poor, is easy to be coupled with ring portion major insulation.
Good effect of the present utility model：Lead portion major insulation is wrapped up using machine, improves wrapping quality and wrapping
Efficiency, simple structure, rational technology improves product total quality.
Description of the drawings
Fig. 1 is embodiment schematic diagram of the present utility model；
In figure：1 fairlead, 2 major insulations, 3 end screens, 4 main screens two, poor 5 stepped ladders, 6 radomes, 7 Secondary Windings.
Specific embodiment
Below in conjunction with the accompanying drawings, this utility model is described further by embodiment.
A kind of oil-immersed inverted current transformer major insulation wraps up draw bail, comprising fairlead 1, major insulation 2, end screen 3,
Main screen, radome 6 and Secondary Winding 7, in one radome 6 of outer setting of Secondary Winding 7, radome 6 and the reliable connection of fairlead 1
Connect；Fairlead and ring portion arrange two main screens, and radome 6 constitutes main screen one, connects electronegative potential with fairlead 1, and lead portion master is exhausted
Edge and ring portion major insulation outermost position arrange main screen 24, connect high potential；Fairlead 1 wraps up major insulation 2, and the wrapping of fairlead 1 is main exhausted
It is linked together with radome 6 by screw thread after edge 2, then wraps up ring portion major insulation；Lead portion major insulation is provided with multiple ends
Shield 3 partial-pressure structures, and reserve equal length but the unequal stepped ladder of thickness differs from 5, coupled with ring portion major insulation.
The lead tube portion major insulation, is wrapped up with whole cable paper, or uses banded cable, or with crimped paper with half-stack package
Prick.
Oil-immersed inverted current transformer major insulation is wrapped up, and a point two parts are carried out：The lead portion major insulation bag of fairlead 1
Prick using whole cable paper wrapping, or use banded cable, or wrapped up with crimped paper band half lap, be machine wrapping；The lead of fairlead 1
After the completion of the major insulation wrapping of part, then ring portion major insulation wrapping is carried out, the wrapping of ring portion major insulation is wrapped up using machine or by hand, and
Coupled with lead portion major insulation；Lead portion major insulation, using multiple partial-pressure structures of end screen 3, and reserves equal length
But the unequal stepped ladder of thickness is poor, it is easy to be coupled with ring portion major insulation.
The stepped ladder is poor, and connecting mode is as follows：
Power-frequency voltage U in short-term is tolerated by productsPermit with the axial power frequency of insulation and use field intensity ElDetermine the overall length of stepped ladder difference
Degree LC；
N equal length cascaded surface is separated into, each cascaded surface length is S；
Each ladder radius surface ykStart radius r are wrapped up by lead portion major insulationC, lead portion major insulation wrapping completion
Radius R and step number n determines；
Complete stepped ladder difference to determine；
Step number wants value reasonable, it is impossible to very few, crossing that I haven't seen you for ages and makes at cascaded surface climb electric-field strength radially along face exceed and permit with climbing
Electric-field strength, it is possible to cause to climb electricity；Can not be excessive, excessive complex process enforcement difficulty is big.
Embodiment：Stepped ladder is designed by taking 110kV current transformers as an example poor.Tolerate power-frequency voltage U in short-termsTake 230kV,
The axial power frequency of insulation permits uses field intensity ElTake 1.25kV/mm, the total length L of stepped ladder differenceC≥Us/El=230/1.25=
184mm, takes LC=200mm, is divided into 10 equal length cascaded surfaces, and each cascaded surface length is S=LC/ n=200/10=20mm,
Major insulation wraps up start radius rCTake 31.4mm, major insulation wrapping completion radius R takes 57.7mm, then the 1st ladder from inside to outside
The radius y in face1=rC(R/rC)1/n=31.4（57.7/31.4）1/10=33.4mm, by that analogy y2=35.5mm, y3=37.7mm, y4=
40.1mm, y5=42.6mm, y6=45.3mm, y7=48.1mm, y8=51.1mm, y9=54.3mm, y10=57.7mm。
Claims (2)
1. a kind of oil-immersed inverted current transformer major insulation wraps up draw bail, it is characterised in that：Comprising fairlead（1）, it is main
Insulation（2）, end screen（3）, main screen, radome（6）And Secondary Winding（7）, in Secondary Winding（7）One radome of outer setting（6）,
Radome（6）With fairlead（1）Positive connection；Fairlead and ring portion arrange two main screens, radome（6）With fairlead（1）Structure
Into main screen one, electronegative potential is connect, lead portion major insulation and ring portion major insulation outermost position arrange main screen two（4）, connect high potential；Draw
Spool（1）Wrapping major insulation（2）, fairlead（1）Wrapping major insulation（2）Afterwards by screw thread and radome（6）It is linked together, then
Wrapping ring portion major insulation；Fairlead（1）The major insulation at place is provided with multiple end screens（3）Partial-pressure structure, and reserve equal length but
The unequal stepped ladder of thickness is poor（5）, coupled with ring portion major insulation.
2. a kind of oil-immersed inverted current transformer major insulation according to claim 1 wraps up draw bail, and its feature exists
In：Major insulation at the fairlead, is wrapped up with whole cable paper, or uses banded cable, or is wrapped up with crimped paper band half lap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621236873.3U CN206163303U (en) | 2016-11-18 | 2016-11-18 | Draw bail is wrapped to oily inverted type current transformer major insulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621236873.3U CN206163303U (en) | 2016-11-18 | 2016-11-18 | Draw bail is wrapped to oily inverted type current transformer major insulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206163303U true CN206163303U (en) | 2017-05-10 |
Family
ID=58660395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621236873.3U Expired - Fee Related CN206163303U (en) | 2016-11-18 | 2016-11-18 | Draw bail is wrapped to oily inverted type current transformer major insulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206163303U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106384658A (en) * | 2016-11-18 | 2017-02-08 | 保定天威互感器有限公司 | Oil-immersed inversion type current transformer major insulation wrapping connection structure and method |
-
2016
- 2016-11-18 CN CN201621236873.3U patent/CN206163303U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106384658A (en) * | 2016-11-18 | 2017-02-08 | 保定天威互感器有限公司 | Oil-immersed inversion type current transformer major insulation wrapping connection structure and method |
| CN106384658B (en) * | 2016-11-18 | 2017-12-15 | 保定天威互感器有限公司 | A kind of oil-immersed inverted current transformer major insulation wraps up coupling method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170510 Termination date: 20181118 |