CN109326431A - A kind of oil-immersed transformer and its assembly method - Google Patents
A kind of oil-immersed transformer and its assembly method Download PDFInfo
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- CN109326431A CN109326431A CN201811306121.3A CN201811306121A CN109326431A CN 109326431 A CN109326431 A CN 109326431A CN 201811306121 A CN201811306121 A CN 201811306121A CN 109326431 A CN109326431 A CN 109326431A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000004804 winding Methods 0.000 claims abstract description 136
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 83
- 238000005192 partition Methods 0.000 claims abstract description 12
- 229910052742 iron Inorganic materials 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 3
- 239000000123 paper Substances 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- 238000003475 lamination Methods 0.000 abstract description 5
- 239000002023 wood Substances 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 239000000284 extract Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
-
- 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
- H01F30/00—Fixed transformers not covered by group H01F19/00
- H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
- H01F30/12—Two-phase, three-phase or polyphase transformers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Insulating Of Coils (AREA)
Abstract
The present invention proposes a kind of oil-immersed transformer and its assembly method, installation step are as follows: disassembly upper clamping piece and upper yoke；Remove coil windings pressing element；Suit coil winding；Upper yoke carries out inserted sheet, and installs the upper clamping piece；Check each unit status.Simultaneously, oil-immersed transformer includes oil-filled transformer body, iron core and three-phase coil winding are equipped with inside oil-filled transformer body, coil windings surround and are coated on the outside of iron core, and it is isolated between each coil windings by phase partition, phase partition two sides offset with the outer surface of coil windings respectively, coil windings include high-voltage winding and low pressure winding, low pressure winding is set in outside iron core, high-voltage winding is set in outside low pressure winding, by insulating board between low pressure winding and high-voltage winding, stay or corrugated board isolation, coaming plate is installed between coil windings and iron core, insulating board is equipped between coaming plate and iron core.Lamination wood is replaced with insulating board in transformer body, shortens the distance between coil and iron core.
Description
Technical field
The present invention relates to oil-immersed transformer field more particularly to a kind of oil-immersed transformer and its assembly methods.
Background technique
Transformer is the weight component in electric power power transmission and transformation system, and usage amount is very huge, the main function of transformer
Mainly realized jointly by iron core, high-tension coil and low-voltage coil, in the currently used transformer, high-tension coil and
Low-voltage coil collectively forms alternate winding, and is looped around on iron core, and is then isolated by spacing board between each phase winding.
It is equipped with lamination wood between coil windings and iron core, keeps the distance between coil windings and iron core excessive, is unfavorable for becoming
The long-play of depressor, efficiency are not good enough.
Summary of the invention
The purpose of the invention is to provide a kind of oil-immersed transformer and its assembly method, process is clear, transformer device
Lamination wood is replaced with insulating board in body, the distance between coil and iron core is shortened, reduces cost.
To achieve the goals above, the present invention proposes a kind of assembly method of oil-immersed transformer, the specific steps are as follows:
Step S1: disassembly upper clamping piece and upper yoke；
Step S1.1: iron core is clamped with iron core fixture；
Step S1.2: it removes and draws screw rod, unclamp the iron yoke screw rod of two sides；
Step S1.3: the upper clamping piece and clamp insulation are removed；
Step S1.4: the upper yoke is dismantled to using the iron core of stacked on iron yoke technique；
Step S1.5: terminating the disassembly of the upper yoke, removes the iron core fixture；
Step S2: coil windings pressing element is removed；
Step S2.1: relief panel；
Step S2.2: coil windings are checked, the height of each coil windings is consistent, the winding protruding head of the coil windings
And the position alignment of tap outlet；
Step S2.3: the winding protruding head carries out insulating wrapping；
Step S3: suit coil winding；
Step S3.1: cushion block is put in the coil windings bottom side, and suspension hook is symmetrically set to below the cushion block, the coil
Winding is fixed with the cushion block by symmetrically arranged two tied ropes, and suspension hook slings the coil windings using the cushion block；
Step S3.2: it is leveled up using the surface that cardboard supports folder；
Step S3.3: the coil windings are sleeved on iron core, confirm the direction of the winding protruding head, along the iron core
Circumference installs coaming plate between the coil windings and the iron core, installs phase partition between the adjacent coil windings；
Step S3.4: the end of the coil windings is smooth, keeps the upper clamping piece parallel with lower clamping piece and apart from height one
It causes；
Step S3.5: fit on core insulation and the pressing plate；
Step S4: the upper yoke carries out inserted sheet, and installs the upper clamping piece；
Step S4.1: inserted sheet is successively carried out from side or among big grade separately to two sides inserted sheet step by step；
Step S4.2: installing ground strip after installing the upper clamping piece, tenses the iron yoke screw rod of two sides, full wafer；
Step S4.3: the ground strip is inserted into the upper yoke and lower yoke, and detects the iron core to the upper clamping piece
Whether insulate with lower clamping piece.
Further, in the assembly method of the oil-immersed transformer, in step S2.3, the winding protruding head is curved
Crimped paper, then one layer of half lap of band of packet parallel fabric are wrapped after folding.
Further, in the assembly method of the oil-immersed transformer, in step S3.3, the coil windings packet
Include low pressure winding and high-voltage winding, the high-voltage winding set as the low pressure winding outside, the low pressure winding and high-voltage winding
Between be enclosed with insulating board, stay or corrugated board.
Further, in the assembly method of the oil-immersed transformer, in step S4.1, by the line before inserted sheet
The airway of circle winding upper end is blocked, and utilizes " ∏ " clip to fasten when inserted sheet, after inserted sheet using folder bolt extract described in " ∏ "
Clip, and clamped the upper yoke by fastener.
Further, in the assembly method of the oil-immersed transformer, in step S4.2, the iron core diameter≤
When Φ 200mm, the insertion depth of the ground strip is 30mm；When the iron core diameter is 250~330mm of Φ, the ground strip
Insertion depth be 50mm.
Further, in the assembly method of the oil-immersed transformer, which is characterized in that in step S4.2, institute
Upper clamping piece is stated with the iron core by insulating end ring insulation.
The present invention also proposes a kind of oil-immersed transformer, including oil-filled transformer body, the oil-immersed transformer sheet
Internal portion is equipped with iron core and three-phase coil winding, and the coil windings surround and are coated on the outside of the iron core, and each line
It encloses between winding and is isolated by phase partition, outer surface of the phase partition two sides respectively with the coil windings offsets, institute
It states coil windings to be made of high-voltage winding and low pressure winding, the low pressure winding is set on the outside of the iron core, the high voltage winding
Group is set on the outside of the low pressure winding, between the low pressure winding and high-voltage winding by insulating board, stay or corrugated board every
From, coaming plate is installed between the coil windings and the iron core, between the coaming plate and the iron core be equipped with insulating board.
Further, in the oil-immersed transformer, the coaming plate is in U-typed, and two blocks of coaming plates are opposite and side
Edge overlap joint, the insulating board are set to the lap-joint of two blocks of coaming plates.
Further, in the oil-immersed transformer, the overlap joint size of the coaming plate should be 30~50mm.
Compared with prior art, the beneficial effects are mainly reflected as follows: assembly process is clear.Meanwhile transformer device
Lamination wood is replaced with insulating board in body, the distance between coil and iron core is shortened, reduces cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of oil-immersed transformer in the present invention；
Fig. 2 is A-A sectional structure chart in Fig. 1；
Fig. 3 is B-B sectional structure chart in Fig. 2；
Fig. 4 is the radial structural schematic diagram of Fig. 3 coil and iron yoke inserted sheet；
Fig. 5 is coaming plate overlapped structure structure chart in Fig. 2.
Wherein: upper clamping piece 11, lower clamping piece 12, upper yoke 21, lower yoke 22, iron core 3, pressing plate 41, cushion block 42, insulating end ring
43, coil windings 5, low pressure winding 51, high-voltage winding 52, winding protruding head 53, coaming plate 61, phase partition 62, insulating board 63.
Specific embodiment
It is described in more detail below in conjunction with assembly method of the schematic diagram to oil-immersed transformer of the invention, wherein
Illustrating the preferred embodiment of the present invention, it should be appreciated that those skilled in the art can modify invention described herein, and still
So realize advantageous effects of the invention.Therefore, following description should be understood as the widely known of those skilled in the art,
And it is not intended as limitation of the present invention.
In the description of the present invention, it should be noted that " transverse direction ", " vertical if any term " center " for the noun of locality
To ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top",
The indicating positions such as "bottom", "inner", "outside", " clockwise ", " counterclockwise " and positional relationship are orientation based on the figure or position
Relationship is set, the narration present invention is merely for convenience of and simplifies description, rather than the device or element of indication or suggestion meaning are necessary
It constructs and operates with specific orientation, with particular orientation, should not be understood as limiting specific protection scope of the invention.
In the present invention, except as otherwise clear stipulaties and restriction, should make if any term " assembling ", " connected ", " connection " term
Broad sense goes to understand, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It is also possible to mechanical connect
It connects；It can be directly connected, be also possible to be connected by intermediary, can be and be connected inside two elements.For ability
For the those of ordinary skill of domain, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
The present invention is more specifically described by way of example referring to attached drawing in the following passage.According to following explanation, the present invention
The advantages of and feature will become apparent from.It should be noted that attached drawing is all made of very simplified form and uses non-accurate ratio,
Only for the purpose of facilitating and clarifying the purpose of the embodiments of the invention.
The present invention proposes a kind of oil-immersed transformer and its assembly method, the specific steps are as follows:
Step S1: disassembly upper clamping piece 11 and upper yoke 21；
Step S1.1: iron core 3 is clamped with iron core fixture；
Step S1.2: it removes and draws screw rod, unclamp the iron yoke screw rod of two sides；
Step S1.3: upper clamping piece 11 and clamp insulation are removed；
Step S1.4: upper yoke 21 is dismantled to using the iron core 3 of stacked on 21 technique of iron yoke；
Step S1.5: terminate the disassembly of upper yoke 21, remove iron core fixture；
Step S2: 5 pressing element of coil windings is removed；
Step S2.1: relief panel 41；
Step S2.2: check coil windings 5, the height of each coil windings 5 is consistent, the winding protruding head 53 of coil windings 5 and
Tap the position alignment of outlet；
Step S2.3: winding protruding head 53 carries out insulating wrapping；Winding protruding head 53 wraps crimped paper, then packet parallel fabric after bending
One layer of half lap of band.
Step S3: suit coil winding 5；
Step S3.1: cushion block 42 is put in 5 bottom side of coil windings, and suspension hook is symmetrically set to the lower section of cushion block 42, coil windings 5 with
Cushion block 42 is fixed by symmetrically arranged two tied ropes, and suspension hook slings coil windings 5 using cushion block 42；
Step S3.2: it is leveled up using the surface that cardboard supports folder；
Step S3.3: coil windings 5 are sleeved on iron core 3, are confirmed the direction of winding protruding head 53, are existed along 3 circumference of iron core
Coaming plate 61 is installed between coil windings 5 and iron core 3, phase partition 62 is installed between adjacent windings winding 5；Coil windings 5 are wrapped
Include low pressure winding 51 and high-voltage winding 52,52 sets of high-voltage winding as low pressure winding 51 outside, low pressure winding 51 and high-voltage winding 52
Between be enclosed with insulating board 63, stay or corrugated board.
Step S3.4: the end of coil windings 5 is smooth, keeps upper clamping piece 11 parallel with lower clamping piece 12 and consistent apart from height；
Step S3.5: the insulation of assembly upper yoke 21 and pressing plate 41；
Step S4: upper yoke 21 carries out inserted sheet, and installs upper clamping piece 11；
Step S4.1: inserted sheet is successively carried out from side or among big grade separately to two sides inserted sheet step by step；By line before inserted sheet
The airway of circle 5 upper end of winding is blocked, and utilizes " ∏ " clip to fasten when inserted sheet, extracts " ∏ " clevis using folder bolt after inserted sheet
Son, and clamped upper yoke 21 by fastener.
Step S4.2: ground strip is installed after installation upper clamping piece 11, tenses the iron yoke screw rod of two sides, full wafer；3 diameter of iron core≤
When Φ 200mm, the insertion depth of ground strip is 30mm；When 3 diameter of iron core is 250~330mm of Φ, the insertion depth of ground strip is
50mm.Upper clamping piece 11 is insulated with iron core 3 by insulating end ring 43.
Step S4.3: ground strip is inserted into upper yoke 21 and lower yoke 22, and detects iron core 3 to upper clamping piece 11 and lower clamping piece 12
Whether insulate.
As shown in Figures 1 to 5, the present invention also proposes a kind of oil-immersed transformer, including oil-filled transformer body, oil immersion
Iron core 3 and three-phase coil winding 5 are equipped with inside formula transformer body, coil windings 5, which are surround, is coated on 3 outside of iron core, and each
It is isolated between coil windings 5 by phase partition 62, outer surface of 62 two sides of phase partition respectively with coil windings 5 offsets, line
Circle winding 5 is made of high-voltage winding 52 and low pressure winding 51, and low pressure winding 51 is set in 3 outside of iron core, and high-voltage winding 52 is arranged
In 51 outside of low pressure winding, it is isolated between low pressure winding 51 and high-voltage winding 52 by insulating board 63, stay or corrugated board, coil
Coaming plate 61 is installed between winding 5 and iron core 3, insulating board 63 is equipped between coaming plate 61 and iron core 3.
Further, as shown in Fig. 2, in the present embodiment, high-voltage winding 52 and low pressure winding 51 are in oblong knot
Structure is simultaneously coaxially distributed.As shown in figure 5, coaming plate 61 is in U-typed, two blocks coaming plate 61 is opposite and overlapping edges, insulating board 63 are set to
The lap-joint of two blocks of coaming plates 61.The overlap joint size of coaming plate 61 should be 30~50mm.
To sum up, in the present embodiment, the assembly method of the oil-immersed transformer of proposition, assembly process are clear.Meanwhile transformation
Lamination wood is replaced with insulating board in device body, the distance between coil and iron core is shortened, reduces cost.
The above is only a preferred embodiment of the present invention, does not play the role of any restrictions to the present invention.Belonging to any
Those skilled in the art, in the range of not departing from technical solution of the present invention, to the invention discloses technical solution and
Technology contents make the variation such as any type of equivalent replacement or modification, belong to the content without departing from technical solution of the present invention, still
Within belonging to the scope of protection of the present invention.
Claims (9)
1. a kind of assembly method of oil-immersed transformer, which is characterized in that specific step is as follows:
Step S1: disassembly upper clamping piece and upper yoke；
Step S1.1: iron core is clamped with iron core fixture；
Step S1.2: it removes and draws screw rod, unclamp the iron yoke screw rod of two sides；
Step S1.3: the upper clamping piece and clamp insulation are removed；
Step S1.4: the upper yoke is dismantled to using the iron core of stacked on iron yoke technique；
Step S1.5: terminating the disassembly of the upper yoke, removes the iron core fixture；
Step S2: coil windings pressing element is removed；
Step S2.1: relief panel；
Step S2.2: check coil windings, the height of each coil windings is consistent, the winding protruding head of the coil windings and point
The position alignment of leading-out wire；
Step S2.3: the winding protruding head carries out insulating wrapping；
Step S3: suit coil winding；
Step S3.1: cushion block is put in the coil windings bottom side, and suspension hook is symmetrically set to below the cushion block, the coil windings
It is fixed with the cushion block by symmetrically arranged two tied ropes, suspension hook slings the coil windings using the cushion block；
Step S3.2: it is leveled up using the surface that cardboard supports folder；
Step S3.3: the coil windings are sleeved on iron core, confirm the direction of the winding protruding head, along the iron core circumference
Coaming plate is installed between the coil windings and the iron core, phase partition is installed between the adjacent coil windings；
Step S3.4: the end of the coil windings is smooth, keeps the upper clamping piece parallel with lower clamping piece and consistent apart from height；
Step S3.5: fit on core insulation and the pressing plate；
Step S4: the upper yoke carries out inserted sheet, and installs the upper clamping piece；
Step S4.1: inserted sheet is successively carried out from side or among big grade separately to two sides inserted sheet step by step；
Step S4.2: installing ground strip after installing the upper clamping piece, tenses the iron yoke screw rod of two sides, full wafer；
Step S4.3: the ground strip is inserted into the upper yoke and lower yoke, and detect the iron core to the upper clamping piece and under
Whether folder insulate.
2. the assembly method of oil-immersed transformer according to claim 1, which is characterized in that described in step S2.3
Crimped paper, then one layer of half lap of band of packet parallel fabric are wrapped after winding protruding head bending.
3. the assembly method of oil-immersed transformer according to claim 1, which is characterized in that described in step S3.3
Coil windings include low pressure winding and high-voltage winding, the high-voltage winding set as the low pressure winding outside, the low pressure winding
Insulating board, stay or corrugated board are enclosed between high-voltage winding.
4. the assembly method of oil-immersed transformer according to claim 1, which is characterized in that in step S4.1, inserted sheet
The preceding airway by the coil windings upper end is blocked, and utilizes " ∏ " clip to fasten when inserted sheet, is pulled out after inserted sheet using folder bolt
Described " ∏ " clip out, and clamped the upper yoke by fastener.
5. the assembly method of oil-immersed transformer according to claim 1, which is characterized in that described in step S4.2
When iron core diameter≤Φ 200mm, the insertion depth of the ground strip is 30mm；When the iron core diameter is 250~330mm of Φ,
The insertion depth of the ground strip is 50mm.
6. the assembly method of oil-immersed transformer according to claim 1, which is characterized in that described in step S4.2
The insulating end ring that passes through of upper clamping piece and the iron core insulate.
7. a kind of oil-immersed transformer, which is characterized in that including oil-filled transformer body, in the oil-filled transformer body
Portion is equipped with iron core and three-phase coil winding, the coil windings around being coated on the outside of the iron core, and each coil around
It is isolated between group by phase partition, outer surface of the phase partition two sides respectively with the coil windings offsets, the line
Circle winding is made of high-voltage winding and low pressure winding, and the low pressure winding is set on the outside of the iron core, the high-voltage winding set
It is located on the outside of the low pressure winding, the low pressure winding is isolated between high-voltage winding by insulating board, stay or corrugated board, institute
It states and coaming plate is installed between coil windings and the iron core, insulating board is equipped between the coaming plate and the iron core.
8. oil-immersed transformer according to claim 7, which is characterized in that the coaming plate is in U-typed, two blocks of coaming plates
Opposite and overlapping edges, the insulating board are set to the lap-joint of two blocks of coaming plates.
9. oil-immersed transformer according to claim 8, which is characterized in that the overlap joint size of the coaming plate should be 30~
50mm。
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| CN201811306121.3A CN109326431A (en) | 2018-11-05 | 2018-11-05 | A kind of oil-immersed transformer and its assembly method |
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| CN201811306121.3A CN109326431A (en) | 2018-11-05 | 2018-11-05 | A kind of oil-immersed transformer and its assembly method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391082A (en) * | 2019-08-13 | 2019-10-29 | 中变集团上海变压器有限公司 | One kind is dry to get higher crimping ring mould |
| CN110428959A (en) * | 2019-08-08 | 2019-11-08 | 福州天宇电气股份有限公司 | Using the winding phase insulation structure and its assembly method of bent plate |
| CN110600252A (en) * | 2019-08-01 | 2019-12-20 | 山东电力设备有限公司 | Integral sleeving method for ultra-high voltage transformer body |
| CN110890194A (en) * | 2019-11-01 | 2020-03-17 | 深圳市中航比特通讯技术有限公司 | Oil-immersed high-frequency high-voltage transformer |
| CN114050034A (en) * | 2021-11-09 | 2022-02-15 | 广东四会互感器厂有限公司 | Transformer for safely and symmetrically converting two-phase alternating current high voltage into three-phase commercial power supply |
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