CN205487752U - Special high voltage transformers's pin connection structure and special high voltage transformers - Google Patents
Special high voltage transformers's pin connection structure and special high voltage transformers Download PDFInfo
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- CN205487752U CN205487752U CN201520771947.2U CN201520771947U CN205487752U CN 205487752 U CN205487752 U CN 205487752U CN 201520771947 U CN201520771947 U CN 201520771947U CN 205487752 U CN205487752 U CN 205487752U
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Abstract
The utility model discloses a special high voltage transformers's pin connection structure and special high voltage transformers. In this secret agent high voltage transformers's pin connection structure, this secret agent high voltage transformers adopts the parallelly connected structure of twin columns, wherein, the coiling direction of I post winding in the twin columns be the right side around to, the coiling direction of II post windings be a left side around to, the lead wire of II post windings includes consecutive four sections, include the section of drawing forth after drawing forth from II post windings promptly, be in the changeover portion between I post winding and the II post windings, continue coiling continuous around the section to the I post winding, and the junction section of joining with the lead wire of I post winding, the junction section of the lead wire of II post windings and the lead wire of I post winding are parallelly connected draws forth, the changeover portion of the lead wire of II post windings and the distance of the ware body central line between twin columns are close to. Adopt this pin connection structure, can don't additionally increase under the prerequisite of oil tank inner space, just can guarantee among the special high voltage transformers insulation distance of the lead wire between twin columns to the oil tank inner wall betterly to the manufacturing cost and the cost of transportation of transformer have greatly been saved.
Description
Technical field
This utility model belongs to technical field of transformer manufacturing, is specifically related to the lead link structure of a kind of extra-high voltage transformer and comprises the extra-high voltage transformer of this lead link structure.
Background technology
Along with developing rapidly of country's extra-high voltage electric transmission and transformation industry, the development of 1000kV transformator is increasingly rapider, and 1000kV generator transformer is the voltage that generator outlet voltage directly rises to 1100kV extra-high voltage transformer.Using 1000kV generator transformer, can greatly reduce power transmitting device, therefore it is one of key equipment of AC extra high voltage power transmission network.
For the extra-high voltage transformer of this high-capacity, being limited by traffic condition, 1000kV generator transformer generally need to use single-phase double-column parallel-connection structure could meet movement requirement.Owing between 1000kV generator transformer twin columns, locus is limited, and the link position of extra-high voltage lead-in wire is high voltage, high electric field position between twin columns, therefore the connected mode gone between is the most crucial, deal with improperly and internal field will be caused too high, causing partial discharge of transformer excessive, more serious meeting causes transformator disruptive discharge.If using traditional lead-in wire connected mode, the insulation distance of the lead-in wire of 1000kV transformator to be met to tank wall, then the space in fuel tank to increase a lot, and its manufacturing cost and cost of transportation all can increase a lot.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency present in prior art, the lead link structure of a kind of extra-high voltage transformer is provided and comprises the extra-high voltage transformer of this lead link structure, use this lead link structure, can be on the premise of the most extra increase fuel tank internal space, just can preferably ensure that in extra-high voltage transformer, going between twin columns arrives the insulation distance of inner wall of oil tank, thus dramatically saves on manufacturing cost and the cost of transportation of transformator.
Solve this utility model technical problem and be employed technical scheme comprise that the lead link structure of this extra-high voltage transformer, this extra-high voltage transformer uses twin columns parallel-connection structure, wherein, the coiling direction of I post winding in twin columns be right around to, the coiling direction of II post winding be left around to, the lead-in wire of II post winding includes four sections be sequentially connected, i.e. include the extraction section after II post winding is drawn, it is in the changeover portion between I post winding and II post winding, continue coiling continuing around section to I post winding, and the junction section of the lead-in wire junction with I post winding, the junction section of the lead-in wire of II post winding is in parallel with the lead-in wire of I post winding draws, the distance of the device body centrage between the changeover portion of the lead-in wire of described II post winding and twin columns is close.
Preferably, the continuous coiling direction around section on I post winding of the lead-in wire of described II post winding is in opposite direction with the coiling of I post winding.
Preferably, the 1/8～1/6 of the outermost layer circumference circle of the continuous a length of I post winding around section of the lead-in wire of described II post winding.
Preferably, the outermost layer circumference of described I post winding head end First Line cake being reserved with locus, the lead-in wire of II post winding is wound at this locus.
It may further be preferable that the changeover portion of the lead-in wire of II post winding is parallel with the line of centres of twin columns.
This utility model also provides for a kind of extra-high voltage transformer, and this extra-high voltage transformer uses twin columns parallel-connection structure, and this extra-high voltage transformer uses above-mentioned lead link structure.
Preferably, this extra-high voltage transformer includes that fuel tank, described twin columns are located at fuel tank internal, is provided with dividing plate between inner wall of oil tank and twin columns, and the changeover portion of the lead-in wire of described II post winding is between dividing plate and the line of centres of twin columns.
Specifically, this utility model lead link structure has the advantages that
The connected mode of lead-in wire between the twin columns of the transformator that this utility model preferably solves high-capacity twin columns parallel-connection structure.In using this lead link structure, by specify two posts respective around to, and it is continuous on another post to make the lead-in wire of a wherein post continue after extraction, the extra-high voltage between twin columns thus can be made to go between very close to the device body centrage between twin columns, therefore lead-in wire can be made to be in a relatively uniform extra-high voltage electric field, effectively improve the electric field strength at connecting lead wire.Further, this lead link structure is used so that the wrapping of the shielding measure of lead-in wire and lead wire insulation processes, all simpler than traditional connected mode, more convenient operation, reliability are higher.The more important thing is this lead wire connection method of employing, on the premise of need not additionally increase fuel tank internal space, the most preferably ensure that the extra-high voltage between twin columns goes between the insulation distance of inner wall of oil tank, is greatly saved manufacturing cost and the cost of transportation of transformator.
The lead link structure of this utility model extra-high voltage transformer is particularly well-suited in the extra-high voltage transformer of 500-1000kV.
Accompanying drawing explanation
Fig. 1 is the structural representation of the lead link structure of extra-high voltage transformer in this utility model embodiment；
Fig. 2 is the structural representation of line between the twin columns of extra-high voltage transformer in Fig. 1；
Fig. 3 is the Q-Q view (when the lead-in wire of II post winding is in I post winding side) in Fig. 2；
Fig. 4 is the P-P view (when the lead-in wire of II post winding is in II post winding side) in Fig. 2；
In figure: 1-colds pressing pipe；2-changeover portion；3-device body square ring；4-dividing plate；The device body of 5-I post winding；The device body of 6-II post winding；7-device body screen；The lead-in wire of 8-II post winding；9-aluminium foil；10-metallizes insulating paper；11-lead wire insulation layer；12-corrugated board；13-goes between profiled member.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model, the technical scheme in this utility model is carried out clear, complete description, it is clear that described embodiment is a part of embodiment of the present utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained on the premise of not making creative work, broadly fall into the scope of this utility model protection.
This utility model provides the lead link structure of a kind of extra-high voltage transformer, this extra-high voltage transformer uses twin columns parallel-connection structure, wherein, the coiling direction of I post winding in twin columns be right around to, the coiling direction of II post winding be left around to, the lead-in wire of II post winding includes four sections be sequentially connected, i.e. extraction section after II post winding is drawn, it is in the changeover portion between I post winding and II post winding, continue coiling continuing around section to I post winding, and the junction section of the lead-in wire junction with I post winding, the junction section of the lead-in wire of II post winding is in parallel with the lead-in wire of I post winding draws, the distance of the device body centrage between the changeover portion of the lead-in wire of described II post winding and twin columns is close.
It addition, this utility model also provides for a kind of extra-high voltage transformer, this extra-high voltage transformer uses twin columns parallel-connection structure, and this extra-high voltage transformer uses above-mentioned lead link structure.
For making those skilled in the art be more fully understood that the technical solution of the utility model, with specific embodiment, this utility model is described in further detail below in conjunction with the accompanying drawings.
Embodiment:
The present embodiment provides the extra-high voltage transformer of a kind of 1000kV, this extra-high voltage transformer uses single-phase double-column parallel-connection structure, therefore this extra-high voltage transformer includes twin columns, it is respectively I post winding and II post winding, and the lead link structure between these extra-high voltage transformer twin columns uses the lead link structure shown in Fig. 1.
As shown in Figure 1, I post winding and the coiling of II post winding in twin columns are in opposite direction, wherein, the coiling direction of I post winding be right around to, the coiling direction of II post winding be left around to, the lead-in wire of II post winding includes four sections be sequentially connected, i.e. include the extraction section after II post winding extraction, the changeover portion being between I post winding and II post winding, continue the junction section that the coiling continuous lead-in wire around section and with I post winding to I post winding is joined, and the extraction in parallel with the lead-in wire of I post winding of the junction section of the lead-in wire of II post winding.
In the present embodiment, the continuous coiling direction around section on I post winding of the lead-in wire of described II post winding is in opposite direction with the coiling of I post winding, be a left side around to.And II post winding lead-in wire the continuous a length of I post winding around section outermost layer circumference circle 1/8～1/6.Preferably the 1/6 of the outermost layer circumference circle of I post winding.
Preferably, the outermost layer circumference of described I post winding head end First Line cake is reserved with a few stall space position, so so that the continuous of the lead-in wire of II post winding can be wound on this locus around section.
In the present embodiment, the changeover portion 2 of the lead-in wire of described II post winding (i.e. dot-dash line segment A ' A in Fig. 2 " illustrate) parallel with the line of centres of twin columns (i.e. I post winding and II post winding), and the distance of the device body centrage between these changeover portion and twin columns is close.Specifically, this extra-high voltage transformer includes that fuel tank, described twin columns are all located in described fuel tank, is respectively equipped with many logos and utensils body screen 7 outside the device body 5 of I post winding and the device body 6 of II post winding.As in figure 2 it is shown, be provided with dividing plate 4 between inner wall of oil tank and twin columns, dividing plate 4 is placed between two device body screens of twin columns, and the changeover portion 2 of the lead-in wire of described II post winding is located at the inner side of dividing plate 4, is i.e. between dividing plate 4 and the line of centres of twin columns.
Preferably, in the present embodiment, technological operation for convenience, changeover portion 2 is respectively to be extended one section by the end drawing section with the continuous head end around section in fact, and is connected by pipe 1 of colding pressing by above-mentioned two sections extended and formed.Certainly, changeover portion 2 also can respectively be extended one section by the end drawing section with first section continued around section, then be welded to connect these two sections and formed.
As shown in Figure 4, in the present embodiment, part when being in II post winding side of changeover portion 2 for the lead-in wire of II post winding, on lead-in wire, first crimping is colded pressing pipe 1, is then coated with aluminium foil 9, metal wrinkled paper 10, lead wire insulation layer 11, multi-wall corrugated board 12 and multilamellar lead-in wire shape layer 13 on pipe from inside to outside colding pressing.Wherein, each layer corrugated board 12 and each layer lead-in wire shape layer 13 are spaced on lead wire insulation layer 11.Cladding aluminium foil 9 is in order to the lead-in wire 8 of II post winding is filled rounding.
Same, as shown in Figure 3, in the present embodiment, part when being in I post winding side of changeover portion 2 for the lead-in wire of II post winding, on lead-in wire, first crimping is colded pressing pipe 1, is then coated with aluminium foil 9, metal wrinkled paper 10, lead wire insulation layer 11, multi-wall corrugated board 12 and multilamellar lead-in wire shape layer 13 on pipe from inside to outside colding pressing.Wherein, the metal covering of metallization crimped paper 10 is close to aluminium foil side, and each layer corrugated board 12 and each layer lead-in wire shape layer 13 are spaced on lead wire insulation layer 11.Cladding aluminium foil 9 is in order to the lead-in wire 8 of II post winding is filled rounding.
In the present embodiment, above-mentioned lead link structure is the lead wire connection method by following extra-high voltage transformer and makes.When coiling, the coiling direction of I post winding in twin columns be right around to, the coiling direction of II post winding be left around to, and I post winding is in winding process, the outermost layer circumference of its head end First Line cake can not be for full circle, a few stall space position need to be reserved, so that the lead-in wire of II post winding is after drawing II post winding, it is possible to be wound at the above-mentioned locus of I post winding.The lead-in wire of II post winding is after drawing II post winding, and in continuation coiling to I post winding, the lead-in wire with I post winding is joined the most again, and both after junction, parallel connection is drawn again.Preferably, the specification of the lead-in wire of II post winding is identical with the wire gauge of first section of I post winding.
Wherein, the lead-in wire of described II post winding coiling direction on I post winding is in opposite direction with the coiling of I post winding, and the 1/8～1/6 of the outermost layer circumference circle of a length of I post winding of coiling that the lead-in wire of II post winding is on the outermost layer circumference of I post winding.It is preferably 1/6.
And the lead-in wire of II post winding after drawing on II post winding until to continue coiling close to the distance of this device body centrage being between the changeover portion twin columns and twin columns on I post winding, and described changeover portion is parallel with the line of centres of twin columns.
In the present embodiment, in order to technological operation is convenient, lead-in wire continuous making II post winding the most respectively around section and draws section, and then by continuous around section with draw section and couple together, the part of this connection is exactly in the middle part of twin columns, thus constitutes the changeover portion of the lead-in wire of II post winding.That is, in the present embodiment, the lead-in wire of II post winding is continued coiling concretely comprising the following steps to I post winding after drawing II post winding: be wound on by a section lead on the outermost layer circumference of I post winding, until the lead-in wire of the end of this wire and I post winding is joined, and the head end of this wire and the lead-in wire of II post winding are connected as a single entity by pipe 1 of colding pressing.
Wherein, the arrow direction shown in Fig. 1 is the sense of current of winding in extra-high voltage transformer.
Preferably, as shown in Figure 3,4, the lead-in wire 8 of II post winding all uses aluminium foil 9 to be coated with in I post winding side with in II post winding side, then bag half lap layer of metal crimped paper 10 again on aluminium foil 9, and make the metal covering of metallization crimped paper 10 be close to aluminium foil side, then unite on metallization insulating paper 10 bag lead wire insulation layer 11, corrugated board 12 and lead-in wire profiled member 13.
In the present embodiment, on lead-in wire during wrapping lead-in wire profiled member, for the easy for installation of profiled member 13 that go between, lead-in wire profiled member is in this part in the middle part of twin columns disconnect, then being connected in one after the lead-in wire profiled member of I post winding side and the lead-in wire profiled member of II winding side, side being overlapped in the middle part of twin columns, its concrete lap of splice is about 160mm.
It is understood that embodiment of above is merely to illustrate that principle of the present utility model and the illustrative embodiments that uses, but this utility model is not limited thereto.For those skilled in the art, in the case of without departing from spirit of the present utility model and essence, can make various modification and improvement, these modification and improvement are also considered as protection domain of the present utility model.
Claims (7)
1. a lead link structure for extra-high voltage transformer, this extra-high voltage transformer uses
Twin columns parallel-connection structure, it is characterised in that the coiling direction of I post winding in twin columns is right
Around to, the coiling direction of II post winding be left around to, the lead-in wire of II post winding includes successively
Four sections be connected, i.e. include the extraction section after II post winding is drawn, are in I post winding
And II changeover portion between post winding, continue coiling to I post winding continuous around section, with
And with I post winding lead-in wire join junction section, the junction section of the lead-in wire of II post winding with
The lead-in wire parallel connection of I post winding is drawn, the changeover portion of the lead-in wire of described II post winding and twin columns
Between the distance of device body centrage close.
2. the lead link structure of extra-high voltage transformer as claimed in claim 1, it is special
Levy and be, the continuous coiling direction around section on I post winding of the lead-in wire of described II post winding
Coiling with I post winding is in opposite direction.
3. the lead link structure of extra-high voltage transformer as claimed in claim 1, it is special
Levy and be, the outermost of the continuous a length of I post winding around section of the lead-in wire of described II post winding
The 1/8～1/6 of layer circumference circle.
4. the lead link structure of extra-high voltage transformer as claimed in claim 3, it is special
Levy and be, the outermost layer circumference of described I post winding head end First Line cake is reserved with space
Position, the continuous of the lead-in wire of II post winding is wound on this locus around section.
5. the lead-in wire of the extra-high voltage transformer as described in any one of claim 1-4 connects knot
Structure, it is characterised in that the changeover portion of the lead-in wire of II post winding is put down with the line of centres of twin columns
OK.
6. an extra-high voltage transformer, this extra-high voltage transformer uses twin columns parallel-connection structure,
It is characterized in that, this extra-high voltage transformer uses drawing described in any one of claim 1-5
Wire connection structure.
Extra-high voltage transformer the most according to claim 6, it is characterised in that this spy
High-tension transformer includes that fuel tank, described twin columns are located at fuel tank internal, inner wall of oil tank and twin columns
Between be provided with dividing plate, the changeover portion of the lead-in wire of described II post winding is in dividing plate and twin columns
Between the line of centres.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520771947.2U CN205487752U (en) | 2015-09-30 | 2015-09-30 | Special high voltage transformers's pin connection structure and special high voltage transformers |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520771947.2U CN205487752U (en) | 2015-09-30 | 2015-09-30 | Special high voltage transformers's pin connection structure and special high voltage transformers |
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| CN205487752U true CN205487752U (en) | 2016-08-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106558417A (en) * | 2015-09-30 | 2017-04-05 | 特变电工衡阳变压器有限公司 | The lead wire connection method of extra-high voltage transformer, lead link structure and extra-high voltage transformer |
-
2015
- 2015-09-30 CN CN201520771947.2U patent/CN205487752U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106558417A (en) * | 2015-09-30 | 2017-04-05 | 特变电工衡阳变压器有限公司 | The lead wire connection method of extra-high voltage transformer, lead link structure and extra-high voltage transformer |
| CN106558417B (en) * | 2015-09-30 | 2019-06-21 | 特变电工衡阳变压器有限公司 | Lead wire connection method, lead wire connection structure and the extra-high voltage transformer of extra-high voltage transformer |
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