CN104465037B - A kind of oil-immersed power transformer iron core grounding structure - Google Patents
A kind of oil-immersed power transformer iron core grounding structure Download PDFInfo
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- CN104465037B CN104465037B CN201410727320.7A CN201410727320A CN104465037B CN 104465037 B CN104465037 B CN 104465037B CN 201410727320 A CN201410727320 A CN 201410727320A CN 104465037 B CN104465037 B CN 104465037B
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- patch panel
- oil
- iron core
- ground strip
- power transformer
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Abstract
A kind of oil-immersed power transformer iron core grounding structure, relates to large-scale power transformer iron core and manufactures field.The present invention solves series connection earthing mode now, exist multipoint earthing or ground connection unreliable time, upper clamping piece unshakable in one's determination must be unclamped, extract copper sheet test, be just difficult to after extracting be inserted into, ground strip can not be compressed after wasting time and energy and repairing very well, cause earthing effect bad.A kind of oil-immersed power transformer iron core grounding structure, including body unshakable in one's determination；Body unshakable in one's determination is separated by oil channel cushion block some oil ducts；Two the most adjacent oil ducts are provided with a patch panel in the upside of oil channel cushion block；Patch panel is fixed by one end of bolt with ground strip；The other end of ground strip is bolted on insulation board and connects grounding sleeve.The part generalization degree of the structure of the present invention is high, and part can prepare in advance, saves installation time；Occur that iron core grounding is bad or during multipoint earthing, single disconnection can check one by one and test, the effectively save Repair of Transformer time.
Description
Technical field
The present invention relates to large-scale power transformer iron core and manufacture field, particularly relate to a kind of oil-immersed type power and become
Depressor iron core grounding structure.
Background technology
At present, according to standard GB/T 6451 requirement, transformer core and metal parts are both needed to reliable ground.
Large-scale power transformer core-diameter is big, due to the requirement of heat radiation, unshakable in one's determination internal must be provided with some oil ducts with
Being easy to oil flow heat dissipation, for this large-scale power transformer, earthing mode in early days is earth, i.e. oil
Road separates each block center unshakable in one's determination and draws a piece of ground copper, is then connected in parallel to grounding sleeve, but, if appointing
Short circuit occurs between one oil duct, and the core area of encirclement is very big, and magnetic flux is a lot, easily produces bigger short circuit and follows
Circular current；And the most commonly used earthing mode is series connection ground connection, between each adjacent oil duct, use copper sheet short circuit,
Surround core area less, do not result in adverse consequences, but, if there is multipoint earthing or ground connection not in iron core
Time reliable, it is difficult to investigate and test, it is necessary to unclamp upper clamping piece unshakable in one's determination, extract copper sheet test, the most difficult after extracting
To be inserted into, ground strip can not be compressed after wasting time and energy and repairing very well, cause earthing effect bad, it is difficult to
Investigation and test.
Summary of the invention
For solving above-mentioned technical problem, the invention provides a kind of oil-immersed power transformer iron core grounding structure.
The technical solution adopted for the present invention to solve the technical problems is: a kind of oil-immersed power transformer is unshakable in one's determination
Ground structure, including body unshakable in one's determination；Described body unshakable in one's determination is separated by oil channel cushion block some oil ducts；Often
Two the most adjacent oil ducts are provided with a patch panel in the upside of oil channel cushion block；One of them patch panel is even
Connect ground strip；Described patch panel is divided into preposition patch panel and rearmounted patch panel；Described preposition patch panel and
Rearmounted patch panel is all made up of lug plate and wiring fixed block；Described wiring fixed block is welded on lug plate
Top side；The lug plate of described preposition patch panel is plugged in an oil duct；Connecing of described rearmounted patch panel
Line sheet is plugged in another adjacent oil duct；Described lug plate and wiring fixed block are equipped with bolt hole
It is fixed by bolt；The described patch panel connecting ground strip passes through the one of screw bolt passes ground strip
The bolt hole of end, the bolt hole of preposition patch panel and rearmounted patch panel is fixed；Described ground strip another
One end is bolted on insulation board and connects grounding sleeve.
Between described adjacent oil duct, every side of patch panel is distributed some stalloys.
Between described adjacent oil duct, every side of patch panel is distributed 3～5 stalloys.
Described ground strip is soft copper band.
Described ground strip is coated with two-layer half lap wrinkle ply of paper and one layer of half lap calico belt from the inside to surface.
Operation principle: carry out ground connection by the way of series connection, connects ground strip to one of them patch panel, real
The purpose of existing one point earth；Patch panel design bolt arrangement so that when the event of power transformer generation iron core grounding
During barrier, only need to open bolt and connect, check one by one and test, finding out the accurate location of fault.
Beneficial effects of the present invention: the part of a kind of oil-immersed power transformer iron core grounding structure of the present invention
Generalization degree is high, and the oil duct quantity of size unshakable in one's determination and setting all can use；Part can shift to an earlier date standard
Standby, save installation time；Realize the purpose of effective one point earth, occur that iron core grounding is bad or multiple spot connects
During ground, single can disconnect, check one by one and test, the effectively save Repair of Transformer time.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of oil-immersed power transformer iron core grounding structure of embodiment；
Fig. 2 is the schematic diagram of the patch panel of a kind of oil-immersed power transformer iron core grounding structure of embodiment；
Fig. 3 is the preposition patch panel in Fig. 2 or the schematic diagram of rearmounted patch panel；
Wherein, 1-oil duct, 2-oil channel cushion block, 3-patch panel, the preposition patch panel of 31-, the rearmounted patch panel of 32-,
301-lug plate, 302-wiring fixed block, 303-bolt hole, 4-ground strip, 5-bolt, 6-insulation board, 7-
Grounding sleeve, 8-stalloy.
Detailed description of the invention
In order to deepen the understanding of the present invention, below in conjunction with drawings and Examples, the present invention is done the most in detail
Thin description, this embodiment is only used for explaining the present invention, constitutes protection scope of the present invention and limit.
Embodiment
As shown in Figure 1, Figure 2 and Figure 3, a kind of oil-immersed power transformer iron core grounding structure, including iron core
Body；Described body unshakable in one's determination is separated by oil channel cushion block 2 some oil ducts 1；Two the most adjacent oil ducts
1 is provided with a patch panel 3 in the upside of oil channel cushion block 2；One of them patch panel 3 connects ground strip 4；
Described patch panel 3 is divided into preposition patch panel 31 and rearmounted patch panel 32；Described preposition patch panel 31 He
Rearmounted patch panel 32 is all made up of lug plate 301 and wiring fixed block 302；Described wiring fixed block 302
It is welded on the top side of lug plate 301；The lug plate 301 of described preposition patch panel 31 is plugged in an oil duct
In；The lug plate 301 of described rearmounted patch panel 32 is plugged in another adjacent oil duct；Described wiring
Sheet 301 and wiring fixed block 302 are equipped with bolt hole 303 be fixed by bolt 5；Described connection
The patch panel 3 of ground strip 4 sequentially passes through one end of ground strip 4, the spiral shell of preposition patch panel 31 by bolt 5
The bolt hole 32 of keyhole and rearmounted patch panel is fixed；The other end of described ground strip 4 is solid by bolt 5
It is scheduled on insulation board 6 and connects grounding sleeve 7；Every side distribution of described 1 patch panel 3 of adjacent oil duct is some
Stalloy 8；Every side of described 1 patch panel 3 of adjacent oil duct is distributed 3～5 stalloys 8；Described connects
Ground sheet 4 is soft copper band；Described ground strip 4 is coated with two-layer half lap wrinkle ply of paper from the inside to surface and one layer of half lap is white
Cloth belt.
Operation principle: carry out ground connection by the way of series connection, one of them patch panel 3 is connected ground strip 4,
Realize the purpose of one point earth；Patch panel 3 designs bolt arrangement so that when power transformer generation iron core connects
During earth fault, only need to open bolt and connect, check one by one and test, finding out the accurate location of fault.
Above-described embodiment should not in any way limit the present invention, all employing equivalents or the side of equivalency transform
The technical scheme that formula obtains all falls within protection scope of the present invention.
Claims (3)
1. an oil-immersed power transformer iron core grounding structure, it is characterised in that: it includes body unshakable in one's determination；
Described body unshakable in one's determination is separated by oil channel cushion block some oil ducts；Two the most adjacent oil ducts are at oil channel cushion block
Upside be provided with a patch panel；One of them patch panel connects ground strip；Described patch panel is divided into
Preposition patch panel and rearmounted patch panel；Described preposition patch panel and rearmounted patch panel are all by lug plate and wiring
Fixed block forms；Described wiring fixed block is welded on the top side of lug plate；Connecing of described preposition patch panel
Line sheet is plugged in an oil duct；The lug plate of described rearmounted patch panel is plugged in another adjacent oil duct
In；Described lug plate and wiring fixed block are equipped with bolt hole be fixed by bolt；Described company
Connect the patch panel of ground strip by one end of screw bolt passes ground strip, the bolt hole of preposition patch panel and after
The bolt hole putting patch panel is fixed；The other end of described ground strip is bolted on insulation board
And connect grounding sleeve；Between described adjacent oil duct, every side of patch panel is distributed some stalloys；Described
Ground strip is soft copper band.
A kind of oil-immersed power transformer iron core grounding structure the most according to claim 1, its feature exists
In: between described adjacent oil duct, every side of patch panel is distributed 3～5 stalloys.
A kind of oil-immersed power transformer iron core grounding structure the most according to claim 1, its feature exists
In: described ground strip is coated with two-layer half lap wrinkle ply of paper and one layer of half lap calico belt from the inside to surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410727320.7A CN104465037B (en) | 2014-12-03 | 2014-12-03 | A kind of oil-immersed power transformer iron core grounding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410727320.7A CN104465037B (en) | 2014-12-03 | 2014-12-03 | A kind of oil-immersed power transformer iron core grounding structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104465037A CN104465037A (en) | 2015-03-25 |
| CN104465037B true CN104465037B (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410727320.7A Active CN104465037B (en) | 2014-12-03 | 2014-12-03 | A kind of oil-immersed power transformer iron core grounding structure |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109521317A (en) * | 2018-12-11 | 2019-03-26 | 保定天威集团特变电气有限公司 | Transformer core multipoint earth faults point detecting method and device |
| CN112259329B (en) * | 2020-10-17 | 2022-09-30 | 国网山东省电力公司淄博供电公司 | Transformer core grounding lead structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0935207A (en) * | 1995-07-21 | 1997-02-07 | Alps Electric Co Ltd | Magnetic head |
| CN201622912U (en) * | 2010-03-12 | 2010-11-03 | 天威保变(合肥)变压器有限公司 | Iron core ground lead |
| CN201655487U (en) * | 2010-03-31 | 2010-11-24 | 卧龙电气集团股份有限公司 | Transformer iron core grounding device |
| CN203617103U (en) * | 2013-12-25 | 2014-05-28 | 保定天威保变电气股份有限公司 | Multi-tap iron core grounding terminal box |
| CN204242767U (en) * | 2014-12-03 | 2015-04-01 | 吴江变压器有限公司 | Oil-immersed power transformer iron core grounding structure |
-
2014
- 2014-12-03 CN CN201410727320.7A patent/CN104465037B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0935207A (en) * | 1995-07-21 | 1997-02-07 | Alps Electric Co Ltd | Magnetic head |
| CN201622912U (en) * | 2010-03-12 | 2010-11-03 | 天威保变(合肥)变压器有限公司 | Iron core ground lead |
| CN201655487U (en) * | 2010-03-31 | 2010-11-24 | 卧龙电气集团股份有限公司 | Transformer iron core grounding device |
| CN203617103U (en) * | 2013-12-25 | 2014-05-28 | 保定天威保变电气股份有限公司 | Multi-tap iron core grounding terminal box |
| CN204242767U (en) * | 2014-12-03 | 2015-04-01 | 吴江变压器有限公司 | Oil-immersed power transformer iron core grounding structure |
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| Publication number | Publication date |
|---|---|
| CN104465037A (en) | 2015-03-25 |
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