CN103811158A - Externally-hung on-load tap-changer for transformer - Google Patents
Externally-hung on-load tap-changer for transformer Download PDFInfo
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- CN103811158A CN103811158A CN201210453982.0A CN201210453982A CN103811158A CN 103811158 A CN103811158 A CN 103811158A CN 201210453982 A CN201210453982 A CN 201210453982A CN 103811158 A CN103811158 A CN 103811158A
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- tap selector
- riser
- tap
- changer
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Abstract
The invention discloses an externally-hung on-load tap-changer for a transformer. The externally-hung on-load tap-changer comprises a bottom plate, and a first vertical plate and a second vertical plate fixed to both sides of the bottom plate, wherein a change-over switch and a tap selector are arranged in a space constructed by the bottom plate, the first vertical plate and the second vertical plate; the change-over switch and the tap selector are supported by the first vertical plate and the second vertical plate; the outer side of the first vertical plate is provided with a composite sheave mechanism for controlling the change-over switch and the tap selector to act; the bottom plate is provided with a plurality of binding posts. The tap selector and the change-over switch are arranged in parallel in the axial direction and arranged triangularly in the transverse direction, so that the transverse insulating distances among phases of the switch can be increased greatly, and the design requirements of high voltage and high current of the switch are met. Meanwhile, the externally-hung on-load tap-changer can be matched with the triangular connection method of the transformer, and triangular connection arrangement can be realized by using one machine instead of three single-phase externally-hung composite on-load tap-changers.
Description
Technical field
The present invention relates to on-load tap changers of transformers technical field, particularly the plug-in on load tap changer of a kind of transformer.
Background technology:
On load tap changer is to have and carry (not having a power failure) in the situation that at transformer, by changing the tapping of connection transformer, changes the turn ratio of the primary and secondary winding of transformer, thereby reaches the object that changes transformer output voltage.
In conventional art, combined loaded tap-changer generally includes a diverter switch and a tap selector; Diverter switch is upper, tap selector under, middle by mechanical connection, insert in oil tank of transformer from transformer upper cover flange hole entirety.Diverter switch is generally a circle tube member, be sealed in own independent cylindrical shape grease chamber, tap selector is generally a cage construction, has some binding posts on it, in order to connection corresponding to transformer coil tap, be directly immersed in the dielectric of oil tank of transformer.
There is following shortcoming in this structure:
Transformer need be reserved the position of the switch, and volume of transformer is increased.Switch fault is repaired and regular maintenance bothers, and transformer needs entirety to drain the oil and hangs cover, cost of overhaul loss and accident potential.Diverter switch grease chamber, if any seepage or damage, can pollute transformer oil, causes greater loss and accident potential.
Existing external hanging type on load tap changer only has combined type, this combined switch is switching and selection function unification, exactly transition contact, arcing contact, transition resistance and main contact are all compounded on moving contact component, by the rotation of switch spindle, once complete the action of transition and switching.Due to structure, combined switch is often only applicable to the on load tap changer of low voltage low capacity, is not suitable for the instructions for use of high voltage, large electric current.
Another existing combined loaded tap-changer, only has Y type connected mode, need select 3 switches for the transformer of large-scale delta connection, and every control 1 phase wherein causes volume of transformer to increase, difficult wiring, and cost improves.
Summary of the invention
Technical problem to be solved by this invention is intended to overcome the above-mentioned technical problem that existing on load tap changer exists, and provides a kind of transformer plug-in on load tap changer.
Technical problem to be solved by this invention can be achieved through the following technical solutions:
The plug-in on load tap changer of a kind of transformer, comprise a base plate and the first riser and the second riser that are fixed on described base plate both sides, in the space being made up of described base plate and first, second riser, be furnished with diverter switch and tap selector, described diverter switch and tap selector are take the first riser and the second riser as support; There is the composite slot wheel mechanism of controlling diverter switch and tap selector action in described the first riser arranged outside; On described base plate, be provided with some binding posts.
In a preferred embodiment of the invention, described shunting switch and described tap selector, being axially parallel setting and arranging being laterally triangle relation, be above diverter switch, and lower is tap selector.
In a preferred embodiment of the invention, described tap selector comprises odd number group tap selector, even numbers group tap selector, and described odd number group tap selector, even numbers group tap selector are axially parallel and arrange and point be located at the described shunting switch left and right sides, below or upper and lower both sides.
In a preferred embodiment of the invention, the phase relation between the action of odd number group tap selector, even numbers group tap selector and diverter switch and their actions in the control of described composite slot wheel mechanism.
In a preferred embodiment of the invention, described the first riser and the second riser by metal material through casting or be welded.
In a preferred embodiment of the invention, described the first riser and the second riser by insulating material through compression molding.
In a preferred embodiment of the invention, in described shunting switch its transitional function be vacuum tube contact assembly.
Because the present invention has adopted above technical scheme, compared with prior art, there is following significant advantage:
1, adopt above-mentioned tap selector and diverter switch are axially parallel setting and are laterally being triangle relation layout, can greatly increase the lateral isolation distance between the each phase place of switch, realize the designing requirement of switch to high voltage, large electric current, realize external hanging type on load tap changer simultaneously and can adapt to transformer delta connection, make three single-phase plug-in combined load ratio bridging switchs of traditional need just can carry out △ to connect the function of layout, only utilize one of the present invention just can realize.
2, whole combined loaded tap-changer is hung on outside transformer outward, thereby has reduced the volume of transformer, simplifies winding wiring, reduces costs, and the maintenance of Convenient switch, drains the oil without transformer when maintenance and hang cover.
3, switch grease chamber independently separates separately with oil tank of transformer, as switch goes wrong, can not pollute transformer oil.
Accompanying drawing explanation
Describe the present invention in detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is the plug-in on load tap changer structural representation of transformer of the present invention.
Fig. 2 is the plug-in on load tap changer cross sectional representation of transformer of the present invention.
Fig. 3 is the plug-in on load tap changer elevational view of transformer of the present invention.
Fig. 4 is the schematic diagram that the plug-in on load tap changer of transformer of the present invention is seen obliquely upward.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Referring to Fig. 1 to Fig. 4, the plug-in on load tap changer of a kind of transformer providing in figure, comprise a base plate 100 and two risers 210,220 that are fixed on base plate 100 both sides, in the space being made up of base plate 100 and two risers 210,220, be furnished with diverter switch 300 and tap selector, tap selector is divided into odd number group tap selector 410, even numbers group tap selector 420.Base plate 100 in order to transformer on flange connect, be hung on outward outside oil tank of transformer, form external hanging type shunting switch.
There is the composite slot wheel mechanism 500 of controlling diverter switch and tap selector action in riser 210 arranged outside; Composite slot wheel mechanism 500 is being controlled the phase relation between the action of odd number group tap selector 410, even numbers group tap selector 420 and diverter switch 300 and their actions.
Two risers 210,220 can be by metal material through casting or being welded.Also can have by insulating material through compression molding.
In the plug-in on load tap changer of transformer, all binding posts 600 are installed on base plate 100, are connected to facilitate with the winding in transformer.In shunting switch 300, its transitional function is vacuum tube contact assembly.
Above content shows and has described basic principle of the present invention, principal character and advantage of the present invention.The personnel of the industry should understand; the present invention is not subject to the restriction of above-mentioned example; that in above-mentioned example and explanation, describes just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all will fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (7)
1. the plug-in on load tap changer of transformer, it is characterized in that, comprise a base plate and the first riser and the second riser that are fixed on described base plate both sides, in the space being made up of described base plate and first, second riser, be furnished with diverter switch and tap selector, described diverter switch and tap selector are take the first riser and the second riser as support; There is the composite slot wheel mechanism of controlling diverter switch and tap selector action in described the first riser arranged outside; On described base plate, be provided with some binding posts.
2. the plug-in on load tap changer of transformer as claimed in claim 1, is characterized in that, described shunting switch and described tap selector, be axially parallel setting and arrange being laterally triangle relation, and be above diverter switch, lower is tap selector.
3. the plug-in on load tap changer of transformer as claimed in claim 2, it is characterized in that, described tap selector comprises odd number group tap selector, even numbers group tap selector, and described odd number group tap selector, even numbers group tap selector are axially parallel and arrange and point be located at the described shunting switch left and right sides, below or upper and lower both sides.
4. the plug-in on load tap changer of transformer as claimed in claim 2, is characterized in that, the phase relation between the action of odd number group tap selector, even numbers group tap selector and diverter switch and their actions in the control of described composite slot wheel mechanism.
5. the plug-in on load tap changer of transformer as described in claim 1 to 4 any one claim, is characterized in that, described the first riser and the second riser by metal material through casting or be welded.
6. the plug-in on load tap changer of transformer as described in claim 1 to 4 any one claim, is characterized in that, described the first riser and the second riser by insulating material through compression molding.
7. the plug-in on load tap changer of transformer as described in claim 1 to 4 any one claim, is characterized in that, in described shunting switch, its transitional function is vacuum tube contact assembly.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210453982.0A CN103811158B (en) | 2012-11-13 | 2012-11-13 | A kind of plug-in load ratio bridging switch of transformator |
| US14/078,067 US9728327B2 (en) | 2012-11-13 | 2013-11-12 | External on-load tap changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210453982.0A CN103811158B (en) | 2012-11-13 | 2012-11-13 | A kind of plug-in load ratio bridging switch of transformator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103811158A true CN103811158A (en) | 2014-05-21 |
| CN103811158B CN103811158B (en) | 2016-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210453982.0A Active CN103811158B (en) | 2012-11-13 | 2012-11-13 | A kind of plug-in load ratio bridging switch of transformator |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USB531425I5 (en) * | 1974-12-10 | 1976-02-03 | ||
| CN2302587Y (en) * | 1997-04-07 | 1998-12-30 | 常衍太 | On-load switch for air-immersed transformer |
| CN101383222A (en) * | 2008-02-26 | 2009-03-11 | 上海华明电力设备制造有限公司 | Externally hanging combined loaded tap-changer |
| CN101958195A (en) * | 2010-09-19 | 2011-01-26 | 中国农业大学 | Arc-less on-load tap-changer for transformer |
| CN102623155A (en) * | 2011-01-30 | 2012-08-01 | 上海华明电力设备制造有限公司 | Integrated plug-pull combined type vacuum on-load tap changer |
| CN203300411U (en) * | 2012-11-13 | 2013-11-20 | 上海华明电力设备集团有限公司 | Transformer externally hung on-load tap switch |
-
2012
- 2012-11-13 CN CN201210453982.0A patent/CN103811158B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USB531425I5 (en) * | 1974-12-10 | 1976-02-03 | ||
| CN2302587Y (en) * | 1997-04-07 | 1998-12-30 | 常衍太 | On-load switch for air-immersed transformer |
| CN101383222A (en) * | 2008-02-26 | 2009-03-11 | 上海华明电力设备制造有限公司 | Externally hanging combined loaded tap-changer |
| CN101958195A (en) * | 2010-09-19 | 2011-01-26 | 中国农业大学 | Arc-less on-load tap-changer for transformer |
| CN102623155A (en) * | 2011-01-30 | 2012-08-01 | 上海华明电力设备制造有限公司 | Integrated plug-pull combined type vacuum on-load tap changer |
| CN203300411U (en) * | 2012-11-13 | 2013-11-20 | 上海华明电力设备集团有限公司 | Transformer externally hung on-load tap switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103811158B (en) | 2016-06-22 |
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