CN2681308Y - Off circuit tap changer - Google Patents
Off circuit tap changer Download PDFInfo
- Publication number
- CN2681308Y CN2681308Y CN 200420017391 CN200420017391U CN2681308Y CN 2681308 Y CN2681308 Y CN 2681308Y CN 200420017391 CN200420017391 CN 200420017391 CN 200420017391 U CN200420017391 U CN 200420017391U CN 2681308 Y CN2681308 Y CN 2681308Y
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- CN
- China
- Prior art keywords
- circuit tap
- insulating part
- stationary contact
- rotating shaft
- contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
The utility model discloses a non-excitation tap changer used in transformer, which is composed of an operating mechanism, a rotating shaft, an insulating part, an insulating board, a movable contact, a static contact, etc. The utility model is characterized in that the static contact is a column structure, the movable contact equipped on the rotating shaft is an arc structure, which are equipped in the insulating part. The utility model because of adopting the structures, greatly improves the insulating level among each static contact and each movable contact; it is particularly suitable on the tapping switch of less gearshift, higher insulating level, and used for transformer to non-excitation regulate voltage.
Description
The utility model relates to a kind of off circuit tap changer that is used for transformer.
Off circuit tap changer of the prior art as shown in Figure 1, 2, be single-phase no excitation drum-shaped shunting switch, it will improve, and insulation level can only increase the spacing of stationary contact post (6) between contact, also must strengthen for the diameter that needs moving contact (5) of actuating simultaneously, the increase of moving contact and stationary contact intercolumniation spacing is just limited like this, and action back moving contact (5) stability is also poor, thereby this drum switch is because structural limitations can not satisfy insulation level requirement between higher contact.And the used switch of some special transformer in the reality (as the meticulous accent of rectification, the isallobaric device of electric furnace and power transformer and tap changer on a large scale) often require the switch gear few but between contact insulation level have relatively high expectations.
The purpose of this utility model is to avoid above-mentioned prior art weak point and provides a kind of simple in structure, install, use, safeguard more easy, the off circuit tap changer that switch built-in electrical insulation level is high.
The technical solution of the utility model is: comprise operating mechanism (1), rotating shaft (2), insulating part (3), insulation board (4), moving contact (5), stationary contact post (6), it is characterized in that stationary contact post (6) is a column structure, the moving contact (5) that is installed in the rotating shaft (2) is an arc structure, moving contact and stationary contact post are radially joining, and moving contact (5), stationary contact post (6) are all installed in insulating part (3).
In the such scheme, be provided with oil clearance (7) and division board (8b) between moving contact (5) and stationary contact post (6) and between each stationary contact post (6).Two groups of above dynamic and static contact contact groups are set in the insulating part (3) simultaneously, drive by rotating shaft (2) between two groups, constitute heterogeneous switch or high-current switch.Rotating shaft (2) also is provided with isolating cylinder (9) for insulation material and eccentric structure on it.Stationary contact post (6) is threaded onto up and down on two insulation boards (4), or is fixedly linked on insulating part (3) inwall.Insulating part (3) is a tubular, or is the cage type that a plurality of insulating bars constitute.Be fixed with supporter (11) in the rotating shaft (2), moving contact is installed on the supporter by spring (12).In insulating part (3) periphery one or more layers insulating cylinder (14) is set.Periphery at isolating cylinder (9) is provided with radially division board (8a).
According to such scheme, principal character of the present utility model is that stationary contact post (6) is a column structure, and is positioned at moving contact system outside and distributes circumferentially, thereby externally field uniformity is good.Moving contact (5) is fan-shaped, be positioned at stationary contact post (6), under spring (12) thrust, engage with stationary contact post (6), the employing of this fan-shaped moving contact (5) has improved the insulation distance between moving contact (5) and the disengaged stationary contact post (6) greatly, allows operating voltage and test voltage between contact thereby improve.Outer insulator (3) the generation blanketing effect is set, make switch take the inner useful space of transformer and dwindle greatly, be beneficial to the material-saving design of transformer, the raising of insulation level, also make volume of switch more help miniaturization.
The dynamic and static sets of contacts of many groups is set in the insulating part (3), then makes heterogeneousization of switch or big electric currentization.As mutually insulated between a plurality of sets of contacts, then constitute heterogeneous switch, do not constitute large current contacts as the then many groups of mutually insulated are in parallel between group.Many groups or heterogeneous combination then make transformer use the switch-desk number to reduce, and synchronism is good, install, operation, safeguard and simplify that reliability improves.
Rotating shaft (2) thus improve further then that creep distance has improved withstand voltage level between dynamic and static contact for the insulation material.Stationary contact post (6) is threaded onto on the insulation board (4) simpler, and stationary contact post (6) also can be fixed on insulating part (3) inwall when insulation level has specific (special) requirements.Insulating part (3) can be tubular, also the cage type that can be made of a plurality of insulating bars.The insulating part periphery is provided with one or more layers insulating cylinder (14), further improves electric field.Periphery at isolating cylinder (9) radially is provided with division board between stationary contact post (6), further improve the medium insulation of stationary contact intercolumniation.
The utility model features simple structure, processing ease, cost are low, are applicable to that the scope switch that especially insulation level is had relatively high expectations between contact is on the asc switches such as thickness tune switch, the conversion of Y-Δ, connection in series-parallel on the various large-scale and special transformers.
Below in conjunction with a description of drawings embodiment of the present utility model.
Fig. 1 is existing single-phase switch front view.
Fig. 2 is the B-B view of Fig. 1.
Fig. 3 is the single-phase switch master cutaway view of an embodiment of the utility model.
Fig. 4 cuts open figure for the C-C of Fig. 3 and Fig. 5.
Fig. 5 is the main cutaway view of another embodiment of the present utility model.
An embodiment of the present utility model is single-phase two gear off circuit tap changer body parts shown in Fig. 3,4.
Have the first line of a couplet operating mechanism (1), be threaded onto up and down rotating shaft (2) clutch mutually at two insulation boards (4) middle part.The insulation board periphery is provided with stationary contact post (6), be connected to the lead-in wire (10) that divides wiring to link to each other with coil on the stationary contact post (6), be fixed with supporter (11) in the rotating shaft (2), moving contact (5) is installed on the supporter (11) by spring (12), moving contact (5) is engaged with stationary contact post (6) under tail springs (12) pressure effect, and moving contact, stationary contact post and insulation board all are loaded in the insulating part (3).When main axis rotation, moving contact (5) is realized voltage regulation function thereupon rotating to change to the another location from a position.
For improving insulation level between adjacent stationary contact post (6), many places are provided with oil clearance (7) and division board (8b) therebetween on insulation board (4), for improving moving contact (5) and not connecing insulation level between stationary contact post (6), be provided with isolating cylinder (9), cage (13) betwixt, when switch rotating shaft (2) was the insulation material, insulation level further improved between dynamic and static contact.For improving insulation level between stationary contact post (6), also be provided with oil clearance (7) and division board (8b) in the diagram on tubular insulating part (3) barrel, and radially dividing plate (8a) be set in the periphery of isolating cylinder (9).For improving the peripheral and peripheral insulation level of switch, switch external insulating part periphery can be provided with one or more layers insulating cylinder (14).
Switch is finished by the installing hole on the insulating part (3) at the fixing of transformer.
Second embodiment of the utility model is shown in Fig. 4,5.
When switching current is excessive, consider insulation board intensity and the upward convenience of shunt leads of striking the post, the sets of contacts of two groups of parallel connections can be set in insulating part (3) simultaneously.Connect by shaft coupling (15) therebetween.The structure of every group of sets of contacts is identical with a last embodiment.
If be designed to heterogeneously, then several picture groups of multi-parallel are shown sets of contacts in an insulating part (3), connect with the insulation axle between per two groups, then constitute heterogeneous switch, heterogeneous like this coaxial synchronous rotation reliability height, and also be beneficial to the design of transformer material-saving.
If stationary contact post (6) quantity increases, then can be used for more gears.With insulation level difference between contact and gear difference, switch external diameter size also changes thereupon.
Insulating part (3) the cage type switch that can constitute by many vertical insulating bar circumferential arrangement in case of necessity.
Claims (9)
1, a kind of off circuit tap changer, comprise operating mechanism (1), rotating shaft (2), insulating part (3), insulation board (4), moving contact (5), stationary contact post (6), it is characterized in that stationary contact post (6) is a column structure, the moving contact (5) that is installed in the rotating shaft (2) is an arc structure, moving contact and stationary contact post are radially joining, and moving contact (5), stationary contact post (6) are all installed in insulating part (3).
2,, it is characterized in that reaching between each stationary contact post (6) between moving contact (5) and stationary contact post (6) and be provided with oil clearance (7) and division board (8b) by the described off circuit tap changer of claim 1.
3, by claim 1 or 2 described off circuit tap changers, it is characterized in that being provided with simultaneously in the insulating part (3) two groups of above dynamic and static contact contact groups, drive by rotating shaft (2) between two groups, constitute heterogeneous switch or high-current switch.
4,, it is characterized in that rotating shaft (2) for insulation material and eccentric structure, also is provided with isolating cylinder (9) on it by claim 1 or 2 described off circuit tap changers.
5,, it is characterized in that stationary contact post (6) is threaded onto up and down on two insulation boards (4), or be fixedly linked on insulating part (3) inwall by claim 1 or 2 described off circuit tap changers.
6,, it is characterized in that insulating part (3) is tubular, or be the cage type that a plurality of insulating bars constitute by claim 1 or 2 described off circuit tap changers.
7, by claim 1 or 2 described off circuit tap changers, it is characterized in that being fixed with supporter (11) in the rotating shaft (2), moving contact is installed on the supporter by spring (12).
8, by claim 1 or 2 described off circuit tap changers, it is characterized in that one or more layers insulating cylinder (14) being set in insulating part (3) periphery.
9, by claim 1 or 2 described off circuit tap changers, it is characterized in that radially division board (8a) being set in the periphery of isolating cylinder (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420017391 CN2681308Y (en) | 2004-03-11 | 2004-03-11 | Off circuit tap changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420017391 CN2681308Y (en) | 2004-03-11 | 2004-03-11 | Off circuit tap changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2681308Y true CN2681308Y (en) | 2005-02-23 |
Family
ID=34606524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420017391 Expired - Lifetime CN2681308Y (en) | 2004-03-11 | 2004-03-11 | Off circuit tap changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2681308Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101477885B (en) * | 2008-09-25 | 2011-07-06 | 武汉泰普变压器开关有限公司 | Non-exciting shunting switch convenient for shifting |
| US9601260B2 (en) | 2013-08-12 | 2017-03-21 | Abb Schweiz Ag | Method of manufacturing an electromagnetic induction device and an electromagnetic induction device |
-
2004
- 2004-03-11 CN CN 200420017391 patent/CN2681308Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101477885B (en) * | 2008-09-25 | 2011-07-06 | 武汉泰普变压器开关有限公司 | Non-exciting shunting switch convenient for shifting |
| US9601260B2 (en) | 2013-08-12 | 2017-03-21 | Abb Schweiz Ag | Method of manufacturing an electromagnetic induction device and an electromagnetic induction device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WUHAN QINPU TRANSFORMER SWITCH CO., LTD. Free format text: FORMER OWNER: LIU GANG Effective date: 20091127 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20091127 Address after: No. 1, sunshine Avenue, temple Development Zone, Jiangxia District, Hubei, Wuhan, China: 430223 Patentee after: Wuhan Qin Jian transformer switch Co., Ltd. Address before: Torch Road, Temple Hill District, East Lake New Technology Development Zone, Hubei, Wuhan, 430223 Patentee before: Liu Gang |
|
| CU03 | Correction of utility model patent gazette |
Correction item: Patentee Correct: Wuhan Taipu Transformer Changer Co., Ltd.|430223 Wuhan City, Jiangxia Province Temple District Development Zone, sunshine Avenue, special No. 1 False: Wuhan Qin Jian transformer switch Co., Ltd.|430223 Wuhan City, Jiangxia Province Temple District Development Zone, sunshine Avenue, special No. 1 Number: 52 Volume: 25 |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140311 Granted publication date: 20050223 |