CN106449056B - A kind of transformer outgoing line device - Google Patents
A kind of transformer outgoing line device Download PDFInfo
- Publication number
- CN106449056B CN106449056B CN201610826307.6A CN201610826307A CN106449056B CN 106449056 B CN106449056 B CN 106449056B CN 201610826307 A CN201610826307 A CN 201610826307A CN 106449056 B CN106449056 B CN 106449056B
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- CN
- China
- Prior art keywords
- paper tube
- equalizing ball
- voltage equalizing
- voltage
- insulation shielding
- 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
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- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformers For Measuring Instruments (AREA)
- Insulating Of Coils (AREA)
Abstract
The present invention relates to a kind of transformer outgoing line devices, casing including voltage equalizing ball and end insertion voltage equalizing ball, the voltage equalizing ball periphery is equipped with insulation shielding paper tube, the insulation shielding paper tube is at least two layers thin paper cylinder small oil gap structure separated by stay, and insulation shielding paper tube internal diameter is greater than voltage equalizing ball diameter and casing maximum gauge；The voltage equalizing ball lower end is connected with insulating bag rolling tube, and high-voltage leading-out wire is penetrated from insulating bag rolling tube head end after external wire, drawn after voltage equalizing ball from casing by outlet in the middle part of high-voltage winding.Insulation distance needed for the present invention is small, stability, high reliablity, and structure is simple, and the manufacturing cycle is short, and manufacturing cost is low.
Description
Technical field
The present invention relates to a kind of outgoing line devices, and in particular to a kind of transformer outgoing line device.
Background technique
500kV voltage class outlet structure is the key that one of super-pressure self coupling power transformer design, outlet structure
It is reliable and stable directly to determine that transformer long-term safety stable operation.For outlet structure, there are three aspect basic demands: electricity
Gas performance, mechanical strength and temperature increase requirement, while to consider the craftsmanship and economy manufactured.
500kV grade winding mostly uses greatly thiol outlet, and the outlet structure that coil outlet at present to casing is drawn can
To be divided into direct outlet and two kinds of leading-out wire.
Direct outlet structure, winding outlet are directly drawn through casing through insulating wrapping.Due to there is no shielding construction, electric field
Be unevenly distributed, for guarantee transformer safety stable operation, need biggish insulation distance around, stability and reliability compared with
It is low, while will lead to the increase of transformer overall volume and the increase of material cost, economy decline.
Indirect outlet structure, winding outlet are further added by metallic shield and insulation system (are generally done outside simple insulating wrapping
Integral molding outgoing line device), then drawn through casing.Since the presence of molding outgoing line device keeps field distribution more uniform,
Surrounding insulation distance reduces than direct outlet structure, can reduce transformer overall volume to a certain degree.Current 500kV voltage etc.
In grade power transformer, indirect outlet structure is widely adopted with its high reliability and stability.But its outgoing line device makes
Complex process, fabrication cycle is long, and manufacturing cost is high, it has also become restricts one of the key point that transformer manufacturing cost reduces.
Summary of the invention
In view of the above-mentioned problems, the present invention provides and a kind of makes transformer outgoing line device simple, that stability is high.
To solve the above problems, the technical scheme adopted by the invention is as follows: a kind of transformer outgoing line device, including voltage equalizing ball and
The casing of voltage equalizing ball is inserted into end, and the voltage equalizing ball periphery is equipped with insulation shielding paper tube, and the insulation shielding paper tube is at least
Two layers of thin paper cylinder small oil gap structure separated by stay, insulation shielding paper tube internal diameter is greater than voltage equalizing ball diameter and casing is maximum straight
Diameter；The voltage equalizing ball lower end is connected with insulating bag rolling tube, and high-voltage leading-out wire is by outlet in the middle part of high-voltage winding, from exhausted after external wire
Edge wrapping pipe head end penetrates, and draws after voltage equalizing ball from casing.
Insulation shielding paper tube is the thin paper cylinder small oil gap structure separated by stay, guarantees sufficient insulation shielding effect.For
Creepage phenomenon is avoided, insulation shielding paper tube internal diameter is greater than voltage equalizing ball diameter and the most thick section diameter of casing, guarantees insulation shielding paper
Cylinder is not contacted with part in casing oil and voltage equalizing ball.Insulation shielding paper tube length about 800-1000mm, weight is in 20kg or so, i.e.,
It ensure that the enough 500kV electric field strength ranges of covering, and be easily installed operation, improve craftsmanship.
High-voltage winding outlet designs the insulating wrapping thickness of 30mm, using large-section lead, guarantees outlet structure electrical resistance
Can be reliable and stable, and meet temperature increase requirement.
The insulation shielding paper tube includes the three-ply paper cylinder nested together, is divided between every two layers of paper tube by stay
It cuts, stay and paper tube are attached by rivet.
Two layers of the rivet point, the jack of two layers of rivet is staggered, and every layer of rivet can only connect two layers of adjacent paper tube.Each
Rivet only fixes adjacent two layers of paper cylinder, must not run through three-ply paper cylinder.(purpose being designed in this way be in order to guarantee sufficiently to insulate, because
To be the destruction to paper tube insulation at rivet perforation, not through the insulation breakdown for being avoided that connectivity.
To guarantee that the outgoing line device has enough mechanical strengths, the insulation shielding paper tube is fixed on iron core by clamping piece
Folder.
The present invention is only applicable to 400kV and 500kV grade, and lower than this voltage class need not use this device, and compare
The high device of these level is again unreliable, this is specially designed for the outlet of 400-500kV grade, is economy and reliability
Balance consider.
On the basis of above, surrounding insulation distance is reduced, reaches reduction volume of transformer, reduces steel, transformer oil etc.
The purpose of material cost.
Insulation distance needed for the present invention is small, stability, high reliablity, and structure is simple, and the manufacturing cycle is short, manufacturing cost
It is low.
Detailed description of the invention
Fig. 1 is overall structure figure of the invention；
Fig. 2 is the structure chart of insulation shielding paper tube；
Fig. 3 is insulation shielding paper tube rivet distribution map；
Wherein, 1, core clamping, 2, casing, 3, clamping piece, 4, insulation shielding paper tube, 5, voltage equalizing ball, 6, insulating bag rolling tube,
7, conducting wire, 8, winding protruding head, 41, rivet, 42, paper tube, 43, stay, 411, outer layer rivet, 412, internal layer rivet.
Specific embodiment
A kind of transformer outgoing line device, as shown in Figure 1, include the casing 2 of voltage equalizing ball 5 and end insertion voltage equalizing ball 5, it is described
5 periphery of voltage equalizing ball is equipped with insulation shielding paper tube 4, and 4 internal diameter of insulation shielding paper tube is greater than 2 maximum gauge of 5 diameter of voltage equalizing ball and casing；
5 lower end of voltage equalizing ball is connected with insulating bag rolling tube 6, and by outlet in the middle part of high-voltage winding, winding protruding head 8 is external to lead high-voltage leading-out wire
It penetrates after line 7 from 6 head end of insulating bag rolling tube, is drawn after voltage equalizing ball 5 from casing 2.The insulation shielding paper tube is consolidated by clamping piece 3
Due to core clamping 1.
As shown in Figure 2 and Figure 3, the insulation shielding paper tube 4 is three layers of thin paper cylinder small oil gap knot separated by stay 43
Structure is split between every two layers of paper tube 42 by stay 43 including the three-ply paper cylinder 42 nested together, stay 43 and paper tube 42
It is attached by rivet 41.Two layers of the rivet point: outer layer rivet 411 and internal layer rivet 412.Outer layer rivet 411 and internal layer riveting
The jack of nail 412 is staggered, and every layer of rivet 41 can only connect two layers of adjacent paper tube 42.
Claims (2)
1. a kind of transformer outgoing line device, the casing including voltage equalizing ball and end insertion voltage equalizing ball, it is characterised in that: described to press
Ball periphery is equipped with insulation shielding paper tube, and the insulation shielding paper tube is three layers of thin paper cylinder small oil gap structure separated by stay,
Insulation shielding paper tube internal diameter is greater than voltage equalizing ball diameter and casing maximum gauge；The voltage equalizing ball lower end is connected with insulating bag rolling tube,
High-voltage leading-out wire is penetrated, from casing after voltage equalizing ball after external wire from insulating bag rolling tube head end by outlet in the middle part of high-voltage winding
It draws；Wherein, it is split between every adjacent two layers paper tube by stay, stay and paper tube are attached by rivet, the rivet
Divide two layers, the jack of two layers of rivet is staggered, and every layer of rivet can only connect two layers of adjacent paper tube.
2. transformer outgoing line device according to claim 1, it is characterised in that: the insulation shielding paper tube is consolidated by clamping piece
Due to core clamping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610826307.6A CN106449056B (en) | 2016-09-18 | 2016-09-18 | A kind of transformer outgoing line device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610826307.6A CN106449056B (en) | 2016-09-18 | 2016-09-18 | A kind of transformer outgoing line device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106449056A CN106449056A (en) | 2017-02-22 |
| CN106449056B true CN106449056B (en) | 2019-10-01 |
Family
ID=58168327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610826307.6A Active CN106449056B (en) | 2016-09-18 | 2016-09-18 | A kind of transformer outgoing line device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106449056B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113611502A (en) * | 2021-07-23 | 2021-11-05 | 保定天威保变电气股份有限公司 | High-voltage integrated outgoing line arrangement method for 500kV three-phase transformer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19508072A1 (en) * | 1995-02-27 | 1996-09-05 | Aeg Tro Transformatoren Gmbh | Mfg. method of transformer winding end leads insulation |
| CN2750432Y (en) * | 2004-08-03 | 2006-01-04 | 特变电工沈阳变压器集团有限公司 | Insulation structure of transformer lead |
| CN204695942U (en) * | 2015-07-01 | 2015-10-07 | 山东电力设备有限公司 | A kind of paralleling reactor of extra-high voltage high-voltage terminal structure |
| CN206003608U (en) * | 2016-09-18 | 2017-03-08 | 山东电力设备有限公司 | A kind of transformator outgoing line device |
-
2016
- 2016-09-18 CN CN201610826307.6A patent/CN106449056B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19508072A1 (en) * | 1995-02-27 | 1996-09-05 | Aeg Tro Transformatoren Gmbh | Mfg. method of transformer winding end leads insulation |
| CN2750432Y (en) * | 2004-08-03 | 2006-01-04 | 特变电工沈阳变压器集团有限公司 | Insulation structure of transformer lead |
| CN204695942U (en) * | 2015-07-01 | 2015-10-07 | 山东电力设备有限公司 | A kind of paralleling reactor of extra-high voltage high-voltage terminal structure |
| CN206003608U (en) * | 2016-09-18 | 2017-03-08 | 山东电力设备有限公司 | A kind of transformator outgoing line device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106449056A (en) | 2017-02-22 |
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