CN201758093U - No-excitation voltage regulating tap switch - Google Patents
No-excitation voltage regulating tap switch Download PDFInfo
- Publication number
- CN201758093U CN201758093U CN2010202756557U CN201020275655U CN201758093U CN 201758093 U CN201758093 U CN 201758093U CN 2010202756557 U CN2010202756557 U CN 2010202756557U CN 201020275655 U CN201020275655 U CN 201020275655U CN 201758093 U CN201758093 U CN 201758093U
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- CN
- China
- Prior art keywords
- pressure adjustment
- moving contact
- shunting switch
- excitation pressure
- rotation axis
- 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 - Fee Related
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Abstract
The utility model discloses a no-excitation voltage regulating tap switch, wherein an insulating handle passing through an insulating box is connected with a rotating shaft, the rotating shaft is connected with moving contacts through springs, the moving contacts have tight contact with fixed contact pillars through concave surfaces at the front parts, the fixed contact pillars are fixed on upper and lower insulating plates, the fixed contact pillars are connected with each tap on the main coil of a transformer through binding posts, and the moving contacts are connected to the tail end of the coil of the transformer through the rotating shaft and a lead connector. In the utility model, the moving contacts are connected to the tail end of the coil of the transformer through the rotating shaft and the lead connector, so that the number of the fixed contact pillars can be remarkably reduced, the production cost can be saved, and the insulating quality and the stability of the tap switch can be improved. In addition, the tap switch of the utility model can be combined for use, so as to meet occasions requiring one-phase transformation and three-phase transformation at the same time.
Description
Technical field
The utility model relates to a kind of non-excitation pressure adjustment shunting switch, particularly relate to a kind of non-excitation pressure adjustment shunting switch that is used on the transformer, it not only can use as single-phase non-excitation pressure adjustment shunting switch, and can be combined into three-phase non-excitation pressure adjustment shunting switch and use.
Background technology
Off circuit tap changer (or claim no on-load shunting switch) is all to disconnect promptly at transformer with electrical network in each side of transformer not having under the situation of excitation by changing a kind of regulator that Transformer Winding tap link position reaches the adjustment secondary voltage.Present off circuit tap changer can be divided into single-phase and three-phase by the number of phases; Can be divided into horizontal and vertical by mounting means; Can be divided into cydariform, cage type etc. by version.China's publication number is the application for a patent for invention of CN101661833, a kind of excitation-free cage type tapping switch for transformer is disclosed, the characteristics of this application for a patent for invention are to have under the same annular fixed contact axial spacing situation, creepage distance of insulation on the insulating bar just is multiplied, improve switch built-in electrical insulation level or effectively reduced the switch axial height, but structure is too complicated, has increased production cost, is not easy to safeguard.
The utility model content
Technical problem to be solved in the utility model is, a kind of off circuit tap changer is provided, and its switch motion position is accurate, and flexible operation, convenience have good stable, and can be used in combination.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of non-excitation pressure adjustment shunting switch, wherein, insulated handle passes insulation booth and links to each other with rotation axis, rotation axis links to each other with moving contact by spring, and moving contact closely contacts with the stationary contact post by the concave surface of front portion, and the stationary contact post is fixed on the lower insulation plate, the stationary contact post links to each other with each tap on the transformer main coil by binding post, and moving contact is connected to the end of transformer coil by rotation axis, pigtail splice.
Preferably, the both sides of described moving contact have pulley, the resistance in the time of can reducing the moving contact gear shift.
Preferably, except that moving contact and the contacted part of stationary contact post, the outside of moving contact and rotation axis all is surrounded by insulating barrier; Moving contact and stationary contact post itself can adopt brass material to make.
Preferably, above-mentioned non-excitation pressure adjustment shunting switch can be combined into a three-phase does not have the non-excitation pressure adjustment shunting switch, wherein, connects by insulating part between the rotation axis.
Preferably, described non-excitation pressure adjustment shunting switch also comprises: keeper makes insulated handle can only rotate a circle around the shaft at most.
The utility model has the advantages that, because moving contact of the present utility model is directly connected to the end of transformer coil by rotation axis, pigtail splice, thereby not only can significantly reduce the number of stationary contact post, save production cost, and can promote the insulating properties and the stability of shunting switch.In addition, because the utility model can be used in combination the occasion of therefore can satisfy the demand simultaneously single-phase transformation and three-phase transformation.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Fig. 1 is the utility model non-excitation pressure adjustment shunting switch overall structure schematic diagram.
Fig. 2 is the cutaway view of non-excitation pressure adjustment shunting switch shown in Figure 1 along the B-B line.
Fig. 3 is the structural representation of moving contact shown in Figure 1.
Fig. 4 is the schematic diagram of insulated handle and keeper.
State diagram when Fig. 5 is used in combination for the utility model non-excitation pressure adjustment shunting switch.
Embodiment
For further disclosing the technical solution of the utility model, convenient your auditor's censorship is described with reference to the accompanying drawings execution mode of the present utility model now:
Fig. 1 is the utility model non-excitation pressure adjustment shunting switch overall structure schematic diagram, and the shunting switch shown in the figure is used for the occasion of single-phase transformation; Fig. 2 is the cutaway view of non-excitation pressure adjustment shunting switch shown in Figure 1 along the B-B line, there is shown moving contact 31 by anterior concave surface the situation during with stationary contact post 4 tight contacts; Fig. 3 is the structural representation of moving contact shown in Figure 1, there is shown the pulley 33 of moving contact 31 both sides; Fig. 4 is the schematic diagram of insulated handle 2 and keeper 22, shows the position relation between insulated handle 2 and the keeper 22; State diagram when Fig. 5 is used in combination for the utility model.
In the utility model, insulated handle 2 passes insulation booth 1 and links to each other with rotation axis 3, rotation axis 3 links to each other with moving contact 31 by spring 32, moving contact 31 closely contacts with stationary contact post 4 by anterior concave surface, stationary contact post 4 is fixed on the lower insulation plate 5, stationary contact post 4 links to each other with each tap on the transformer main coil by binding post 6, and moving contact 31 is connected to the end of transformer coil by rotation axis 3, pigtail splice 7.
The both sides of moving contact 31 have pulley 33, and pulley 33 at first contacts with the stationary contact post during gear shift, the resistance when pulley 33 utilizes the rotation of self to reduce moving contact 31 gear shift.In addition, moving contact 31, stationary contact post 4 can adopt brass material to make; Except that moving contact 31 and stationary contact post 4 contacted parts, the outside of moving contact 31 and rotation axis 3 all is surrounded by insulating barrier to promote insulation property.
As shown in Figure 5, above-mentioned non-excitation pressure adjustment shunting switch can be combined into a three-phase does not have the non-excitation pressure adjustment shunting switch, wherein, connects by insulating part 8 between the rotation axis 3, makes the later rotation axis 3 of combination fuse and carries out coaxial rotation.
Described non-excitation pressure adjustment shunting switch can also comprise keeper 22, make insulated handle 2 can only 21 rotate a circle around the shaft at most, had after the keeper 22, pigtail splice 7 can be made an integral body and carry out coaxial rotation with rotation axis 3, save the connecting link between pigtail splice 7 and the rotation axis 3, further increased the stability of connection line.
Set forth operation principle of the present utility model below in conjunction with accompanying drawing: during pressure regulation, confirming under the situation that each side of transformer all disconnects with electrical network, rotate insulated handle 2,3 of rotation axiss follow insulated handle 2 to rotate, and can finish the transformation process when moving contact 31 switches on another stationary contact post 4 by a stationary contact post 4.In addition, when insulated handle 2 went to keeper 22 places, because the resistance shelves of keeper 22, insulated handle 2 can not continue to rotate and can only be along counter-rotation till touching keeper 22 once more along this direction.As shown in Figure 5, its principle was the same when shunting switch was used in combination, and just three single-phase non-excitation pressure adjustment shunting switchs are worked respectively simultaneously, finish the task of three-phase transformation.
More than, basic design of the present utility model and basic principle have been set forth by description of listed embodiment.But the utility model never is limited to above-mentioned listed execution mode, and every equivalent variations, improvement and deliberately of inferior quality behavior of doing based on the technical solution of the utility model of change all should belong to protection range of the present utility model.
Claims (6)
1. non-excitation pressure adjustment shunting switch, it is characterized in that, insulated handle (2) passes insulation booth (1) and links to each other with rotation axis (3), rotation axis (3) links to each other with moving contact (31) by spring (32), moving contact (31) closely contacts with stationary contact post (4) by anterior concave surface, stationary contact post (4) is fixed on the lower insulation plate (5), stationary contact post (4) links to each other with each tap on the transformer main coil by binding post (6), and moving contact (31) is connected to the end of transformer coil by rotation axis (3), pigtail splice (7).
2. according to the described non-excitation pressure adjustment shunting switch of claim 1, it is characterized in that the both sides of described moving contact (31) have pulley (33), the resistance in the time of can reducing moving contact (31) gear shift.
3. according to claim 1 or 2 described non-excitation pressure adjustment shunting switchs, it is characterized in that except that moving contact (31) and the contacted part of stationary contact post (4), the outside of moving contact (31) and rotation axis (3) all is surrounded by insulating barrier.
4. according to the described non-excitation pressure adjustment shunting switch of claim 3, it is characterized in that moving contact (31) and stationary contact post (4) adopt brass material to make.
5. according to the described non-excitation pressure adjustment shunting switch of claim 4, it is characterized in that, above-mentioned non-excitation pressure adjustment shunting switch can be combined into a three-phase non-excitation pressure adjustment shunting switch, wherein, connect by insulating part (8) between the rotation axis (3).
6. according to the described non-excitation pressure adjustment shunting switch of claim 4, it is characterized in that, also comprise: keeper (22), make insulated handle (2) at most around the shaft (21) rotate a circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202756557U CN201758093U (en) | 2010-07-29 | 2010-07-29 | No-excitation voltage regulating tap switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202756557U CN201758093U (en) | 2010-07-29 | 2010-07-29 | No-excitation voltage regulating tap switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201758093U true CN201758093U (en) | 2011-03-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202756557U Expired - Fee Related CN201758093U (en) | 2010-07-29 | 2010-07-29 | No-excitation voltage regulating tap switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201758093U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108376625A (en) * | 2018-03-01 | 2018-08-07 | 安阳师范学院 | A kind of electronic switch of rotatable control |
| CN110085460A (en) * | 2019-06-05 | 2019-08-02 | 贵州长征电气有限公司 | A kind of nine grades of off circuit tap changers of drum type positive-negative voltage-regulation |
| CN111864676A (en) * | 2019-04-28 | 2020-10-30 | 北京国电恒嘉科技产业集团有限公司 | Air type bus duct distribution sleeve joint plug box |
-
2010
- 2010-07-29 CN CN2010202756557U patent/CN201758093U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108376625A (en) * | 2018-03-01 | 2018-08-07 | 安阳师范学院 | A kind of electronic switch of rotatable control |
| CN111864676A (en) * | 2019-04-28 | 2020-10-30 | 北京国电恒嘉科技产业集团有限公司 | Air type bus duct distribution sleeve joint plug box |
| CN110085460A (en) * | 2019-06-05 | 2019-08-02 | 贵州长征电气有限公司 | A kind of nine grades of off circuit tap changers of drum type positive-negative voltage-regulation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110309 Termination date: 20160729 |