CN204991405U - Outlet structure and high impedance transformer of high impedance transformer - Google Patents
Outlet structure and high impedance transformer of high impedance transformer Download PDFInfo
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- CN204991405U CN204991405U CN201520746799.9U CN201520746799U CN204991405U CN 204991405 U CN204991405 U CN 204991405U CN 201520746799 U CN201520746799 U CN 201520746799U CN 204991405 U CN204991405 U CN 204991405U
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Abstract
The utility model discloses an outlet structure and high impedance transformer of high impedance transformer. This outlet structure includes the insulation protective layer of cladding outside high voltage winding's tip lead wire, insulation protective layer includes oil stream passageway and insulating layer, wherein, oil stream passageway and insulating layer adopt butt -joint structural to form respectively, stagger mutually with the butt joint position of insulating layer in the butt joint position of oil stream passageway. Partial discharge, the reliability height of taking place rational in infrastructure, difficult of this outlet structure.
Description
Technical field
The utility model belongs to technical field of transformer manufacturing, is specifically related to a kind of outlet structure of high-impedance transformer and comprises the high-impedance transformer of this outlet structure.
Background technology
High-impedance transformer is adopted to be in bulk power system, reduce one of transformer short-circuit electric current, the effective measures improving anti-short circuit capability.At present, for the high-impedance transformer that high pressure winding is built-in, its coils arrangement adopts the insulation system of iron core-high pressure winding-middle pressure winding-tap-changing windings-low pressure winding.Because high pressure winding is near unshakable in one's determination, high pressure coil diameter is little, D.C. resistance is little, loss declines, simultaneously little, the weight of volume declines, cost reduces, and therefore the transformer of this structure is able to extensive use in each grid company, such as, be used to the city net transformer station that some are in the 220kV electric pressure of load center.
But the built-in high-impedance transformer of high pressure winding is arranged in inner side because of high pressure winding (i.e. high-tension coil), and close with iron core, therefore high pressure winding can only adopt end outlet.Like this, for the outlet structure of the end leads of 220kV electric pressure, its insulation distance with iron core, core clamping, nail pressing etc. must be taken into full account.Because electric pressure is high, the end outlet wrapping insulation of high pressure winding is thicker, considers the factor of practical operation order, usually adopts the technique of segmentation wrapping insulation.As a rule, the changeover portion of insulation thickness change usually becomes the link of insulation property weakness.In engineering practice, easily occur that outlet structure because of high pressure winding overhang is unreasonable and cause the phenomenon of partial discharge.
For manufacturing enterprise, prevent the high partial discharge problem caused of end field intensity, ensure that the insulating wrapping of high pressure winding overhang outlet meets temperature increase requirement is the problem having challenge simultaneously.
Utility model content
Technical problem to be solved in the utility model is for above shortcomings in prior art, provide a kind of rational in infrastructure, not easily occur partial discharge, high-impedance transformer that reliability is high outlet structure and comprise the high-impedance transformer of this outlet structure.
The technical scheme that solution the utility model technical problem adopts is the insulating protective layer that the outlet structure of this high-impedance transformer comprises outside the end leads being coated on high pressure winding; described insulating protective layer comprises oil flow channel and insulating barrier; wherein; described oil flow channel and insulating barrier adopt docking structure to be formed respectively, and the docking location of described oil flow channel and the docking location of insulating barrier stagger mutually.
Preferably, described oil flow channel and insulating barrier respectively adopt two-layer more than, the interval setting successively outside the end leads of high pressure winding of described two-layer above oil flow channel and insulating barrier, the docking location of oil flow channel of whole layers and the docking location of the insulating barrier of whole layer stagger all mutually, or the docking location of the docking location of the oil flow channel of part layer and the insulating barrier of part layer staggers mutually.
Preferably, be also set with oblique cartridge type square ring outside the bottom of the protection section of the end leads of described high pressure winding, the top of the protection section of the end leads of high pressure winding is gripped by wire clamp.
More preferably; the protection section of the end leads of described high pressure winding comprises different three sections of diameter from bottom to top successively; be respectively hypomere, changeover portion and epimere that diameter increases successively; described oblique cartridge type square ring is sleeved on outside the hypomere of protection section of the end leads of high pressure winding, and the epimere of the protection section of the end leads of described high pressure winding is clamped by described wire clamp.
Preferably, described oil flow channel to be docked with corrugated board by corrugated board and is formed, or oil flow channel to be docked with insulating oil duct by corrugated board and formed.
Further preferably, described insulating protective layer comprises inner side insulating protective layer and outside insulating protective layer, and described inner side insulating protective layer and outside insulating protective layer are coated on outside the end leads of high pressure winding successively,
Inner side insulating protective layer comprises the first oil flow channel, the first insulating barrier, the second oil flow channel and the second insulating barrier that from inside to outside set gradually;
Outside insulating protective layer comprises the 3rd oil flow channel and the 3rd insulating barrier, and described 3rd oil flow channel is coated on outside the second insulating barrier, and the 3rd insulating barrier is coated on outside the 3rd oil flow channel.
It is further preferred that described first oil flow channel and the first insulating barrier adopt whole pack arrangement, the length of the first oil flow channel and the first insulating barrier is equal, and this both length is equal with the length of the hypomere of the protection section of the end leads of high pressure winding;
Described second oil flow channel and the second insulating barrier all adopt docking structure, and the docking location of the second oil flow channel and the second insulating barrier staggers;
Described 3rd oil flow channel and the 3rd insulating barrier all adopt docking structure, and the docking location of the 3rd oil flow channel and the 3rd insulating barrier staggers.
It is further preferred that the length of described second oil flow channel, the second insulating barrier, the 3rd oil flow channel and the 3rd insulating barrier is all equal with the length of the protection section of the end leads of high pressure winding;
Described first oil flow channel is made up of the first corrugated board, and described first corrugated board adopts whole pack arrangement, and the insulation molding part that the first insulating barrier is sulfate pulp by material is formed, and described insulation molding part adopts whole pack arrangement;
Described second oil flow channel is docked by the second corrugated board and the first insulating oil duct and forms, and the docking location of described second corrugated board and the first insulating oil duct is located at the hypomere of protection section and the bonding station of changeover portion of the end leads of high pressure winding; Described second insulating barrier is docked by the first cardboard and the first docking cardboard and forms, and the length of described first cardboard is less than the length of the second corrugated board;
3rd oil flow channel is docked by triple wall corrugated board and the 3rd docking corrugated board and forms, and described triple wall corrugated board docks the docking location of corrugated board with the 3rd and the first cardboard flushes with the first docking location docking cardboard; Described 3rd insulating barrier is docked by the second cardboard and the second docking cardboard and forms, and the length of described second cardboard is less than the length of triple wall corrugated board.
Further preferably, this outlet structure also includes whole bag insulating protective layer, and described whole bag insulating protective layer is located at outside insulating protective layer, and whole bag insulating protective layer comprises the 4th oil flow channel and the 4th insulating barrier,
Described 4th oil flow channel and the 4th insulating barrier adopt whole pack arrangement, and the length of described 4th oil flow channel and the 4th insulating barrier is all equal with the length of the protection section of the end leads of high pressure winding.
It is further preferred that described 4th oil flow channel is made up of the 4th corrugated board, described 4th corrugated board adopts whole pack arrangement;
Described 4th insulating barrier is made up of the 3rd cardboard, and described 3rd cardboard adopts whole pack arrangement.
Preferably, described end leads wraps up the insulation crimped paper having different-thickness from the root of high pressure winding, thus makes the protection section of described end leads form diameter different hypomere, changeover portion and epimere successively from bottom to top.
The utility model also provides a kind of high-impedance transformer, and it comprises high pressure winding, and the outlet structure of described high pressure winding adopts above-mentioned outlet structure.
The outlet structure of the utility model high-impedance transformer specifically refers to the outlet structure of high voltage winding group; this outlet structure specifically can a point two procedures complete; by the end leads of high pressure winding segmentation wrapping insulation crimped paper from its root; by outsourcing four-layer corrugated paper board, one deck insulation molding part, triplex board on insulation crimped paper, the protection section of the end leads of high pressure winding can be formed.In above-mentioned two procedures; staggered by the position that the docking of wrapped same layer cardboard and same oil flow channel (can be formed by corrugated board) are docked; thus increasing creepage distance, each section that the insulation thickness for the protection section of the end leads of high pressure winding changes provides reliable protection.Meanwhile, the unobstructed oil flow channel formed for being docked with insulating oil duct by corrugated board, can strengthen heat radiation.And the oil clearance segmentation between the root of end leads to pressing plate is placed end circle and the square ring with sandwich construction, the distance of itself and folder wedge angle can be ensured by controlling angle that end leads draws and oblique cartridge type square ring, and can reliable retention be carried out by wire clamp at an upper portion thereof.
The outlet structure of the utility model high-impedance transformer can action row strong, be easy to realize, effectively can prevent the partial discharge problem caused because end field intensity is high, can ensure that the insulating wrapping of end outlet meets temperature increase requirement simultaneously.
Specifically, this outlet structure has following beneficial effect:
(1) this outlet structure is rational in infrastructure, and this structure is by being completed by two procedures, and process sequence is reasonable, can action row strong, be easy to realize.
(2) this outlet structure by wrapping up couch board, corrugated board, square ring and insulation molding part in end leads, effectively can ensure that the insulation thickness of end leads meets the demands.
(3) by the structure adopting cardboard, oil flow channel (corrugated board) docking location staggers, there is partial discharge phenomenon because creepage distance is inadequate in the changeover portion that can effectively prevent the insulation thickness of end leads from changing.
(4) owing to adopting docking mode to form oil flow channel between corrugated board, between corrugated board and insulating oil duct, can heat be taken away by oil stream, namely can form heat radiation oil circuit, thus effectively can solve the problem of temperature rise of end leads.
(5) adopt oblique cartridge type square ring in this outlet structure, effective protection can be provided to from the end leads position close to folder wedge angle.
Accompanying drawing explanation
Fig. 1 is the structural representation of the outlet structure of high-impedance transformer in the utility model embodiment 1;
Fig. 2 is the A-A view in Fig. 1;
Fig. 3 is the B-B view in Fig. 1.
In figure: 1-first corrugated board; 2-second corrugated board; 3-triple wall corrugated board; 4-insulation molding part; 5-first cardboard; 6-second cardboard; The oblique cartridge type square ring of 7-; 8-first insulating oil duct; 9-the 3rd docks corrugated board; 10-the 4th corrugated board; 11-first docks cardboard; 12-second docks cardboard; 13-the 3rd cardboard; 14-end leads; 15-pressing plate; 16-square ring; 17-high pressure winding; 18-folder; 19-wire clamp.
Embodiment
Below in conjunction with the accompanying drawing in the utility model, carry out clear, complete description to the technical scheme in the utility model, obviously, described embodiment is a part of embodiment of the present utility model, instead of whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope of the utility model protection.
The utility model provides a kind of outlet structure of high-impedance transformer; comprise the insulating protective layer outside the end leads being coated on high pressure winding; described insulating protective layer comprises oil flow channel and insulating barrier; wherein; described oil flow channel and insulating barrier adopt docking structure to be formed respectively, and the docking location of described oil flow channel and the docking location of insulating barrier stagger mutually.
Preferably, described oil flow channel and insulating barrier respectively adopt two-layer more than, the interval setting successively outside the end leads of high pressure winding of described two-layer above oil flow channel and insulating barrier, the docking location of oil flow channel of whole layers and the docking location of the insulating barrier of whole layer stagger all mutually, or the docking location of the docking location of the oil flow channel of part layer and the insulating barrier of part layer staggers mutually.
The utility model also provides a kind of high-impedance transformer comprising above-mentioned outlet structure.
For making those skilled in the art understand the technical solution of the utility model better, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Embodiment 1:
The present embodiment provides a kind of high-impedance transformer of 220kV electric pressure, and in this high-impedance transformer, its outlet structure adopts the outlet structure shown in Fig. 1-3.
In the present embodiment, the outlet structure of high-impedance transformer disclosed in Fig. 1 is specially the outlet structure of the end leads of high pressure winding.The outlet structure of this high-impedance transformer comprises the insulating protective layer outside the end leads being coated on high pressure winding; described insulating protective layer comprises oil flow channel and insulating barrier; described oil flow channel and insulating barrier adopt docking structure to be formed respectively, and the docking location of described oil flow channel and the docking location of insulating barrier stagger mutually.
See Fig. 1, in the present embodiment, the protection section of the end leads of described high pressure winding specifically refers to that the end leads 14 of high voltage winding group is coated with this part of insulating protective layer.The position of the protection section of the end leads of high pressure winding specifically finger ends lead-in wire 14 clamped from its root to end leads by wire clamp 19 this part.
Preferably, wholely in end leads 14 be surrounded by insulation crimped paper, described insulation crimped paper is directly wrapped up in end leads 14, and described insulating protective layer is located at outside insulation crimped paper.
End leads 14 is drawn from high pressure winding 17, and after bending and molding, the angle of inclination after its bending is the span of α, α is 23 °-29 °.
In the present embodiment; because the wire gauge of high pressure winding is different; simultaneously for convenience of operation; end leads 14 just wraps up the insulation crimped paper having different-thickness from the root of high pressure winding; after end leads being wrapped from bottom to top insulation crimped paper; for the protection Duan Eryan of end leads, just define three sections of varying diameters, i.e. the hypomere, changeover portion and the epimere that increase successively of diameter.Wherein, the diameter of hypomere is d1, and length is L4; The diameter of epimere is d2; The shape of changeover portion is truncated cone-shaped, and on it, diameter of a circle is d1, and lower diameter of a circle is d2, and length is L1.Preferably, the span of the span of L4 to be the span of 300-400mm, L1 be 40-70mm, d1 is the span of 35-50mm, d2 is 45-60mm.
In the present embodiment, after end leads 14 is drawn from high pressure winding 17, then pass from the square ring be located at pressing plate 15, and then by the wire clamp 19 that folder in high-impedance transformer 18 is arranged, it is reliably gripped.In the present embodiment, square ring fixing on preferred pressing plate 15 adopts oblique cartridge type square ring (certainly also can adopt straight barrel type square ring) 7, so that strengthen the insulation property of outlet structure, simultaneously in order to reduce the overall dimensions of this outlet structure.
Wherein, oblique cartridge type square ring 7 is sleeved on outside the hypomere of protection section of the end leads of high pressure winding.Under the condition that operating space is enough, preferred tiltedly cartridge type square ring 7 makes the oil flow channel in insulating protective layer as far as possible, the docking location of insulating barrier covers in wherein.
Between high pressure winding 17 and pressing plate 15, also can being provided with the end circle for splitting oil clearance and enclosing suitable each layer square ring 16 with end.Preferred described end circle adopts sandwich construction, and the oil clearance between each layer square ring is communicated with each oil flow channel in insulating protective layer, jointly to be formed heat radiation oil circuit.In the present embodiment, end circle can adopt 5 layers or 6 layers.
Preferably, oil flow channel can be docked with corrugated board by corrugated board and be formed, or oil flow channel to be docked with insulating oil duct by corrugated board and formed.That is, oil flow channel can be made up of corrugated board.Certainly, oil flow channel also can be substituted by other insulating parts with oil clearance space.
In the present embodiment; described insulating protective layer comprises inner side insulating protective layer and outside insulating protective layer; described inner side insulating protective layer and outside insulating protective layer are coated in the end leads of high pressure winding successively, thus form the protection section of the end leads of high pressure winding.
As shown in Figure 1, 2, inner side insulating protective layer comprises the first oil flow channel and the first insulating barrier, the second oil flow channel and the second insulating barrier that from inside to outside set gradually.
Described first oil flow channel and the first insulating barrier adopt whole pack arrangement; the length of the first oil flow channel and the first insulating barrier is equal; and this both length is all equal with the length of the hypomere of the protection section of the end leads of high pressure winding, namely the length of the first oil flow channel and the first insulating barrier is L4.
Concrete, in the present embodiment, the first oil flow channel is made up of the first corrugated board 1, and the first corrugated board 1 adopts whole pack arrangement, and namely the length of the first corrugated board 1 is equal with the length of the hypomere of the protection section of the end leads of high pressure winding; First insulating barrier is made up of insulation molding part 4, and insulation molding part 4 adopts whole pack arrangement, and namely the length of insulation molding part 4 is equal with the length of the hypomere of the protection section of the end leads of high pressure winding.Preferably, the material of insulation molding part 4 preferably adopts sulfate pulp.Preferred insulation molding part 4 overlaps fixing with square ring 16 (being specially one deck square ring near high pressure winding).
Wherein, described second oil flow channel and the second insulating barrier all adopt docking structure, and the docking location of the second oil flow channel and the second insulating barrier staggers.In the present embodiment, the length of the second oil flow channel is equal with the length of the second insulating barrier, and both length is equal with the total length of the protection section of the end leads of high pressure winding.
Concrete, in the present embodiment, described second oil flow channel is made up of the second corrugated board 2 and the first insulating oil duct 8 (other insulating parts that the first insulating oil duct also can be corrugated board or has an oil clearance replaced) docking, the docking location of described second corrugated board and the first insulating oil duct is located at the hypomere of protection section and the bonding station of changeover portion of the end leads of high pressure winding, namely the length of the second corrugated board 2 is equal with the length of the hypomere of the protection section of the end leads of high pressure winding, and its length is L4; Described second insulating barrier is docked by the first cardboard 5 and the first docking cardboard 11 and forms, and this docking location is preferably in the inside of oblique cartridge type square ring 7, and concrete docking location can be located at the extension line place, downside of size L2.Thus, the length of the first cardboard 5 is less than the length of the second corrugated board 2.In the present embodiment, the first cardboard 5 and the first docking cardboard 11 all adopt conventional insulating board to make.
Outside insulating protective layer comprises the 3rd oil flow channel and the 3rd insulating barrier, and described 3rd oil flow channel is coated on outside the second insulating barrier, and the 3rd insulating barrier is coated on outside the 3rd oil flow channel.The length of the 3rd oil flow channel and the 3rd insulating barrier is all equal with the total length of the protection section of the end leads of high pressure winding.
Described 3rd oil flow channel and the 3rd insulating barrier all adopt docking structure, and the docking location of the 3rd oil flow channel and the 3rd insulating barrier staggers, and the length that staggers is (L3-L2).3rd oil flow channel is coated on outside the second insulating barrier, and the 3rd insulating barrier is coated on outside the 3rd oil flow channel.
Concrete, in the present embodiment, 3rd oil flow channel is docked by triple wall corrugated board 3 and the 3rd docking corrugated board 9 and forms, concrete docking location is located at the extension line place, downside of size L2, preferably triple wall corrugated board 3 is all in the inside of oblique cartridge type square ring 7, and namely preferably its docking location is in the inside of oblique cartridge type square ring 7; Described 3rd insulating barrier is docked by the second cardboard 6 and the second docking cardboard 12 and forms, its docking location is in the inside of oblique cartridge type square ring 7, concrete docking location is at the extension line place, downside of size L3, because the size limit place, upside of size L2 and L3 flushes with the size limit place, upside of size L4, and L3 is greater than L2, the length of visible second cardboard 6 is less than the length of triple wall corrugated board 3.Second cardboard 6 and the second docking cardboard 12 all adopt conventional insulating board to make.
As shown in Figure 1, the downside extension line of size L2 is triple wall corrugated board 3 docks corrugated board 9 docking location with the 3rd, and on the downside of L3, extension line is the second cardboard 6 docks cardboard 12 docking location with second.The span of preferred L2 is the span 90-110mm of 40-60mm, L3.
Preferably, this outlet structure also includes whole bag insulating protective layer, and described whole bag insulating protective layer is coated on the outside of insulating protective layer, and in the present embodiment, whole bag insulating protective layer is specifically located at outside the insulating protective layer of outside.Whole bag insulating protective layer comprises the 4th oil flow channel and the 4th insulating barrier.
Wherein, described 4th oil flow channel and the 4th insulating barrier all adopt whole pack arrangement, and the length of described 4th oil flow channel and the 4th insulating barrier is all equal with the total length of the protection section of the end leads of high pressure winding.
Concrete, in the present embodiment, described 4th oil flow channel is made up of the 4th corrugated board 10, and the 4th corrugated board 10 adopts whole pack arrangement, and namely the length of the 4th corrugated board 10 is equal with the total length of the protection section of end leads; Described 4th insulating barrier is made up of the 3rd cardboard 13, and the 3rd cardboard 13 adopts whole pack arrangement, and namely the length of the 3rd cardboard 13 is equal with the total length of the protection section of the end leads of high pressure winding.
In the present embodiment, this outlet structure adopts two procedures to make, and is namely set with operation and lead-in wire operation.
As Fig. 1, shown in 2, in suit operation, after end leads 14 is drawn from high pressure winding 17, first by its bending and molding, controlling its angle of inclination is α, and end leads 14 is wrapped insulation crimped paper to its diameter be d1, then in end leads 14, the first corrugated board 1 and insulation molding part 4 is wrapped up successively, the length of insulation molding part 4 is L4, then assemble between high pressure winding 17 and pressing plate 15 for splitting end circle and its corresponding square ring 16 of oil clearance, and insulation molding part 4 and the square ring 16 near high pressure winding are fixed together, then continue to wrap up the second corrugated board 2 in order in insulation molding part 4, first cardboard 5, triple wall corrugated board 3 and the second cardboard 6.Wherein the first corrugated board 1, second corrugated board 2 is identical with the length of insulation molding part 4, and the length of the first cardboard 5 and triple wall corrugated board 3 reduces L2 relative to former three, and the length of the second cardboard 6 reduces L3 relative to former three.After this operation has been wrapped up, the cross section of this outlet structure is as shown in A-A view in Fig. 2.In suit operation, wrap up above-mentioned part, end leads 14 has been inserted in the oblique cartridge type square ring 7 on pressing plate 15.
Then lead-in wire operation is carried out.In lead-in wire operation, first in end leads 14, bag insulation crimped paper makes the diameter of its epimere be transitioned into d2 from d1, and wherein the length of changeover portion is L1.After end leads 14 being wrapped insulation crimped paper to d2, place the first insulating oil duct 8 to dock with the second corrugated board 2 in the outside of end leads 14, first docking cardboard 11 is docked with the first cardboard 5,3rd docking corrugated board 9 is docked with triple wall corrugated board 3, the second docking cardboard 12 is docked with the second cardboard 6.The docking location of different levels can be formed thus, thus the docking location of the docking location of oil flow channel and insulating barrier can be staggered mutually.Then the 4th corrugated board 10 of coated whole and the 3rd cardboard 13 of whole again in outside, bottom bag near the crooked place of end leads 14, to form described whole bag insulating protective layer.Wherein, internal diameter and the length of oblique cartridge type square ring 7 select suitable size according to actual conditions, with convenient for assembly and meet insulation property require for principle.After completing aforesaid operations, the cross section of this outlet structure is as shown in B-B view in Fig. 3.Finally, by wire clamp 19, the end leads 14 after having wrapped up is fixed.Namely the outlet structure of the high-impedance transformer in the present embodiment is defined.
Embodiment 2:
The outlet structure of the high-impedance transformer in the present embodiment is from the different of the outlet structure in embodiment 1: in the present embodiment, and the structure of the inner side insulating protective layer in insulating protective layer is different.
In the present embodiment; inside the insulating protective layer of inner side, insulating protective layer only includes the first oil flow channel and the first insulating barrier that from inside to outside set gradually; and not there is the second oil flow channel and the second insulating barrier, and the first oil flow channel radially size can suitably increase for the size in embodiment 1.
In the present embodiment, other structures of outlet structure are all identical with the outlet structure in embodiment 1, repeat no more here.
Be understandable that, the illustrative embodiments that above execution mode is only used to principle of the present utility model is described and adopts, but the utility model is not limited thereto.For those skilled in the art, when not 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 range of the present utility model.
Claims (12)
1. the outlet structure of a high-impedance transformer; comprise the insulating protective layer outside the end leads being coated on high pressure winding; described insulating protective layer comprises oil flow channel and insulating barrier; it is characterized in that; described oil flow channel and insulating barrier adopt docking structure to be formed respectively, and the docking location of described oil flow channel and the docking location of insulating barrier stagger mutually.
2. the outlet structure of high-impedance transformer as claimed in claim 1, it is characterized in that, described oil flow channel and insulating barrier respectively adopt two-layer more than, the interval setting successively outside the end leads of high pressure winding of described two-layer above oil flow channel and insulating barrier, the docking location of oil flow channel of whole layers and the docking location of the insulating barrier of whole layer stagger all mutually, or the docking location of the docking location of the oil flow channel of part layer and the insulating barrier of part layer staggers mutually.
3. the outlet structure of high-impedance transformer as claimed in claim 1; it is characterized in that; also be set with oblique cartridge type square ring outside the bottom of the protection section of the end leads of described high pressure winding, the top of the protection section of the end leads of high pressure winding is gripped by wire clamp.
4. the outlet structure of high-impedance transformer as claimed in claim 3; it is characterized in that; the protection section of the end leads of described high pressure winding comprises different three sections of diameter from bottom to top successively; be respectively hypomere, changeover portion and epimere that diameter increases successively; described oblique cartridge type square ring is sleeved on outside the hypomere of protection section of the end leads of high pressure winding, and the epimere of the protection section of the end leads of described high pressure winding is clamped by described wire clamp.
5. the outlet structure of high-impedance transformer as claimed in claim 4, is characterized in that, described oil flow channel to be docked with corrugated board by corrugated board and formed, or oil flow channel to be docked with insulating oil duct by corrugated board and formed.
6. the outlet structure of high-impedance transformer as claimed in claim 4; it is characterized in that; described insulating protective layer comprises inner side insulating protective layer and outside insulating protective layer, and described inner side insulating protective layer and outside insulating protective layer are coated on outside the end leads of high pressure winding successively
Inner side insulating protective layer comprises the first oil flow channel, the first insulating barrier, the second oil flow channel and the second insulating barrier that from inside to outside set gradually;
Outside insulating protective layer comprises the 3rd oil flow channel and the 3rd insulating barrier, and described 3rd oil flow channel is coated on outside the second insulating barrier, and the 3rd insulating barrier is coated on outside the 3rd oil flow channel.
7. the outlet structure of high-impedance transformer as claimed in claim 6, is characterized in that,
Described first oil flow channel and the first insulating barrier adopt whole pack arrangement, and the length of the first oil flow channel and the first insulating barrier is equal, and this both length is equal with the length of the hypomere of the protection section of the end leads of high pressure winding;
Described second oil flow channel and the second insulating barrier all adopt docking structure, and the docking location of the second oil flow channel and the second insulating barrier staggers;
Described 3rd oil flow channel and the 3rd insulating barrier all adopt docking structure, and the docking location of the 3rd oil flow channel and the 3rd insulating barrier staggers.
8. the outlet structure of high-impedance transformer as claimed in claim 7, is characterized in that,
The length of described second oil flow channel, the second insulating barrier, the 3rd oil flow channel and the 3rd insulating barrier is all equal with the length of the protection section of the end leads of high pressure winding;
Described first oil flow channel is made up of the first corrugated board, and described first corrugated board adopts whole pack arrangement, and the insulation molding part that the first insulating barrier is sulfate pulp by material is formed, and described insulation molding part adopts whole pack arrangement;
Described second oil flow channel is docked by the second corrugated board and the first insulating oil duct and forms, and the docking location of described second corrugated board and the first insulating oil duct is located at the hypomere of protection section and the bonding station of changeover portion of the end leads of high pressure winding; Described second insulating barrier is docked by the first cardboard and the first docking cardboard and forms, and the length of described first cardboard is less than the length of the second corrugated board;
3rd oil flow channel is docked by triple wall corrugated board and the 3rd docking corrugated board and forms, and described triple wall corrugated board docks the docking location of corrugated board with the 3rd and the first cardboard flushes with the first docking location docking cardboard; Described 3rd insulating barrier is docked by the second cardboard and the second docking cardboard and forms, and the length of described second cardboard is less than the length of triple wall corrugated board.
9. the outlet structure of the high-impedance transformer as described in any one of claim 6-8; it is characterized in that, this outlet structure also includes whole bag insulating protective layer, and described whole bag insulating protective layer is located at outside insulating protective layer; whole bag insulating protective layer comprises the 4th oil flow channel and the 4th insulating barrier
Described 4th oil flow channel and the 4th insulating barrier adopt whole pack arrangement, and the length of described 4th oil flow channel and the 4th insulating barrier is all equal with the length of the protection section of the end leads of high pressure winding.
10. the outlet structure of high-impedance transformer as claimed in claim 9, is characterized in that,
Described 4th oil flow channel is made up of the 4th corrugated board, and described 4th corrugated board adopts whole pack arrangement;
Described 4th insulating barrier is made up of the 3rd cardboard, and described 3rd cardboard adopts whole pack arrangement.
The outlet structure of 11. high-impedance transformers as claimed in claim 9; it is characterized in that; described end leads wraps up the insulation crimped paper having different-thickness from the root of high pressure winding, thus makes the protection section of described end leads form diameter different hypomere, changeover portion and epimere successively from bottom to top.
12. 1 kinds of high-impedance transformers, comprise high pressure winding, it is characterized in that, described high pressure winding adopts the outlet structure described in any one of claim 1-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520746799.9U CN204991405U (en) | 2015-09-24 | 2015-09-24 | Outlet structure and high impedance transformer of high impedance transformer |
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| CN201520746799.9U CN204991405U (en) | 2015-09-24 | 2015-09-24 | Outlet structure and high impedance transformer of high impedance transformer |
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| CN204991405U true CN204991405U (en) | 2016-01-20 |
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| CN201520746799.9U Active CN204991405U (en) | 2015-09-24 | 2015-09-24 | Outlet structure and high impedance transformer of high impedance transformer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106558404A (en) * | 2015-09-24 | 2017-04-05 | 特变电工衡阳变压器有限公司 | The outlet structure and high-impedance transformer of high-impedance transformer |
| CN107045926A (en) * | 2017-03-17 | 2017-08-15 | 保定天威保变电气股份有限公司 | A kind of transformer 500kV tubular moulding lead wire insulation binding structure for binding and method |
| CN111292937A (en) * | 2018-12-07 | 2020-06-16 | 西安西变中特电气有限责任公司 | 110kV winding outgoing line insulation structure and natural ester insulation oil transformer |
-
2015
- 2015-09-24 CN CN201520746799.9U patent/CN204991405U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106558404A (en) * | 2015-09-24 | 2017-04-05 | 特变电工衡阳变压器有限公司 | The outlet structure and high-impedance transformer of high-impedance transformer |
| CN106558404B (en) * | 2015-09-24 | 2018-11-20 | 特变电工衡阳变压器有限公司 | The outlet structure and high-impedance transformer of high-impedance transformer |
| CN107045926A (en) * | 2017-03-17 | 2017-08-15 | 保定天威保变电气股份有限公司 | A kind of transformer 500kV tubular moulding lead wire insulation binding structure for binding and method |
| CN107045926B (en) * | 2017-03-17 | 2018-05-15 | 保定天威保变电气股份有限公司 | A kind of transformer 500kV tubular moulding lead wire insulation binding structure for binding and method |
| CN111292937A (en) * | 2018-12-07 | 2020-06-16 | 西安西变中特电气有限责任公司 | 110kV winding outgoing line insulation structure and natural ester insulation oil transformer |
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