CN2938366Y - Switchover mechanism of on-load tap changer - Google Patents
Switchover mechanism of on-load tap changer Download PDFInfo
- Publication number
- CN2938366Y CN2938366Y CN 200620044389 CN200620044389U CN2938366Y CN 2938366 Y CN2938366 Y CN 2938366Y CN 200620044389 CN200620044389 CN 200620044389 CN 200620044389 U CN200620044389 U CN 200620044389U CN 2938366 Y CN2938366 Y CN 2938366Y
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- CN
- China
- Prior art keywords
- insulating cylinder
- load tap
- tap changer
- switching mechanism
- insulation cylinder
- 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 new type of on load tap changer switching device, comprising an insulation cylinder, a plurality of binding posts arranged on the outer wall of the insulation cylinder, moving contact units and a fixed contact arranged inside the insulation cylinder, and a drive mechanism arranged on the top of the insulation cylinder. A central axle controlled by the drive mechanism is arranged in the central part of the insulation cylinder; and the moving contact units are repectively arranged in the central axle according to three phases with the help of a installation branch plate for installing the moving contacts. The utility model characterizes in that one end of every binding post is stretched out of the insulation cylinder and the other end goes to the inside of the insulation cylinder and thus forms a installation seat for installing the fixed contact.Every of the fixed contacts is fixed inside the insulation cylinder by the installation seat for installing the fixed contact and then is electrically connected with the binding posts. When the central axle is rotated, the moving contacts shifts between the different fixed contacts. The insulation cylinder is designed as an integrated structure, which avoids the original assembled structure that is assembled by the wall and the bottom of the insulation cylinder ,reduces the machining and assembling procedures, and at the same time avoids the possibility of oil leakage of the oil room, thereby simplifying the whole structure with convenient installation and repair.
Description
Technical field
The utility model is the novel switching mechanism about on load tap changer.
Background technology
On load tap changer be electric pressure at the most frequently used tap changer of the distribution transformer of 35KV, electric current≤400A, be that present domestic distribution system is selected more product for use.
In the prior art, a kind of cagelike structure of the many employings of the switching mechanism of on load tap changer, as shown in Figure 1.Comprise insulating cylinder 11, cage body 12, be located at the upper flange 13 at insulating cylinder top and be located at the interior transmission mechanism 14 of upper flange.On the insulating cylinder outer wall, be distributed with binding post 16 by A, B, C three-phase.
See also Fig. 2.Described cage body 12 is located in the insulating cylinder 11, has cage body train wheel bridge 121 and cage body lower plate 122 on the cage body 12.Periphery at the cage body is provided with a plurality of laths 123 between cage body train wheel bridge 121 and cage body lower plate 122, the fixed contact 17 of A, B, three phase places of C is installed in respectively on the lath 123 of cage body periphery, presses A, B, C three-phase layering layout.The central authorities of cage body 12 are provided with central shaft 124, and central shaft is provided with the moving contact of A, B, three phase places of C support plate 125 is installed, and described each phase moving contact group 15 is located at respectively on each self-corresponding installation support plate.
During assembling, each parts with cage body 12 are assembled into Switch main body earlier, and then lifting advances in the grease chamber that is made up of upper flange, insulating cylinder and the tube end etc., makes the fixed contact on the switch body corresponding one by one with binding post on the insulating cylinder, and presses down the close contact binding post in the effect of spring.During work, central shaft makes the moving contact group and switches between the fixed contact on the cage body under the drive of motor drive mechanism and control.
Though this on load tap changer has the effect of switching,, therefore make complex structure because its parts are many.
Summary of the invention
The utility model is the above-mentioned shortcoming that exists at prior art, and a kind of structural reduction, the switching novel switching mechanism of on load tap changer reliable, easy to maintenance of making that provides.
The technical scheme that the utility model is taked is: the novel switching mechanism of on load tap changer, the transmission mechanism that comprises insulating cylinder, is located at a plurality of binding posts on the insulating cylinder outer wall, is located at moving contact group in the insulating cylinder and fixed contact and is arranged on the insulating cylinder top; Be characterized in that the central authorities of described insulating cylinder are provided with the central shaft that is subjected to transmission mechanism control, described moving contact group is installed support plate by moving contact respectively by three phase places and is located on the central shaft; Described each binding post one end is stretched outside insulating cylinder, and the other end traverses to and forms a fixed contact mount pad in the insulating cylinder, and described each fixed contact is fixed in the insulating cylinder by described fixed contact mount pad, is electrically connected with binding post; When central shaft rotated, described moving contact switched between different fixed contacts.
The novel switching mechanism of above-mentioned on load tap changer wherein, is that one-shot forming constitutes at the bottom of described insulating cylinder, the insulating cylinder tube, forms an overall structure.
The novel switching mechanism of above-mentioned on load tap changer wherein, forms three layers of through hole by circle distribution on the described insulating cylinder barrel, described each binding post is separately positioned in each self-corresponding through hole.
The novel switching mechanism of above-mentioned on load tap changer, wherein, described insulating cylinder is made of unsaturated polyester glass fiber laminar film plastics.
The novel switching mechanism of above-mentioned on load tap changer, wherein, the diameter that described moving contact is installed support plate amplifies, when rotating with described central shaft, be located at moving contact group on this installation support plate and can contact and switch with fixed contact and be as the criterion.
The novel switching mechanism of above-mentioned on load tap changer, wherein, the tube of described insulating cylinder is provided with the bearing pedestal of mounting center axle bearing at the end.
The novel switching mechanism of above-mentioned on load tap changer, wherein, the top of described insulating cylinder is provided with upper flange, and described transmission mechanism is located in the upper flange.
The novel switching mechanism of above-mentioned on load tap changer, wherein, described insulating cylinder nozzle be provided with sealing ring between upper flange is connected, the position that described insulating cylinder nozzle outer wall combines with sealing ring is provided with sealing ring notch is installed.
The novel switching mechanism of above-mentioned on load tap changer, wherein, described upper flange top is provided with top cover, and this top cover is provided with conservator.
Because the utility model has adopted above technical scheme, the good effect of its generation is tangible:
1, insulating cylinder is the integral body of a compression moulding, and the tube circle wall is provided with the hole that fixed contact is installed, and the tube upper flange is provided with through hole of installing with upper flange and the seam that plays location, sealing function; Tube bottom is provided with the bearing saddle bore of mounting center axle bearing.This tube is an overall structure, and each hole is a pressure injection and forms on the tube, does not need machine work once more.
2, this material of pressure injection is unsaturated polyester glass fiber laminar film plastics, this strength of materials height, little, the good insulation preformance of distortion.
3, fixed contact is installed in the inwall of insulating cylinder, has saved the cage body in the device in the past, make easy for installation, safeguard simply, and saved raw material.
Description of drawings
Concrete structure of the present utility model is further provided by following embodiment and accompanying drawing thereof.
Fig. 1 be prior art on load tap changer switching mechanism totally in conjunction with schematic diagram.
Fig. 2 is the structural representation of prior art on load tap changer switching mechanism cage body.
Fig. 3 is the overall structure schematic diagram of the novel switching mechanism of the utility model on load tap changer.
Fig. 4 is the cross-sectional structure schematic diagram of the novel switching mechanism of the utility model on load tap changer.
Structural representation when Fig. 5 is the fixed contact of novel switching mechanism of the utility model on load tap changer and binding post combination.
Fig. 6 is the F-F cutaway view of Fig. 4.
Fig. 7 is the E part enlarged diagram of Fig. 4.
Embodiment
See also Fig. 3, Fig. 4, Fig. 5.The novel switching mechanism of the utility model on load tap changer, comprise insulating cylinder 21, be located at a plurality of binding posts 22 on the insulating cylinder outer wall, be located in the insulating cylinder moving contact group 23 and by a plurality of fixed contacts 24 of circle distribution and the transmission mechanism 25 that is arranged on the insulating cylinder top.Described insulating cylinder is the integral body that is made of the one-shot forming of unsaturated polyester glass fiber laminar film plastics with the tube end and binding post.The tube of insulating cylinder 21 is provided with the bearing pedestal 212 of mounting center axle bearing at the end 211.Be provided with the upper flange 26 of centre bore at the top of insulating cylinder, described transmission mechanism 25 is located in the upper flange.Be provided with sealing ring at the position that insulating cylinder nozzle outer wall combines with sealing ring notch (not shown) is installed, by the sealing circle notch is installed between making the insulating cylinder nozzle and upper flange being connected sealing ring 29 is set.
The novel switching mechanism of the utility model on load tap changer also is provided with top cover 261 at the upper flange top, and this top cover is provided with conservator 28.
Central authorities at insulating cylinder are provided with the central shaft 27 that is subjected to transmission mechanism control between the supreme flange connecting hole of tube lower shaft bearing, central shaft is provided with the moving contact support plate 271,272,273 of three phase places, and each phase moving contact group is located at respectively on each self-corresponding moving contact support plate.Also be provided with transition resistance dish 4 on each moving contact support plate.Form three layers of through hole by circle distribution on the described insulating cylinder barrel, described each binding post 22 distributes and is arranged in each self-corresponding through hole.During installation, described each binding post 22 1 end are stretched outside insulating cylinder, the other end traverses to and forms a fixed contact mount pad 3 (please cooperate referring to Fig. 5) in the insulating cylinder, and described each fixed contact 24 is fixed in the insulating cylinder by fixed contact mount pad separately, is electrically connected with binding post; When central shaft rotated, described moving contact group was switched (please cooperate referring to Fig. 6, Fig. 7) between each fixed contact.
Please consult Fig. 4 again.In the novel switching mechanism of the utility model on load tap changer, because fixed contact is mounted on the mount pad of nearly insulating cylinder inwall, near the insulating cylinder inwall, therefore, the diameter of described moving contact support plate will want big by moving contact support plate more of the prior art, when rotating, be located at moving contact group on this moving contact support plate and can contact with fixed contact and be benchmark with described central shaft.
The utility model has the advantages that:
1, simple for structure, saved a series of parts such as the lath in the original cage body, upper lower plate, make Assembling and easy to maintenance.
2, insulating cylinder is as an overall structure moulding, avoided original structure by insulation barrel and the tube group at the end Assembling structure cuts machining and assembling procedure, has avoided simultaneously the possibility of grease chamber's seepage.
3, owing to be an injection-compression molding, so all installing holes also outpour simultaneously, save a large amount of machineries and add The worker, the uniformity of assurance size.
Claims (9)
1, the novel switching mechanism of on load tap changer, the transmission mechanism that comprises insulating cylinder, is located at a plurality of binding posts of insulation on the barrel, is located at moving contact group in the insulating cylinder and fixed contact and is arranged on the insulating cylinder top; It is characterized in that the central authorities of described insulating cylinder are provided with the central shaft that is subjected to transmission mechanism control, described moving contact group is installed support plate by moving contact respectively by three phase places and is located on the central shaft; Described each binding post one end is stretched outside insulating cylinder, and the other end traverses to and forms a fixed contact mount pad in the insulating cylinder, and described each fixed contact is fixed in the insulating cylinder by described fixed contact mount pad, is electrically connected with binding post; When central shaft rotated, described moving contact switched between different fixed contacts.
2, the novel switching mechanism of on load tap changer according to claim 1 is characterized in that, is that one-shot forming constitutes at the bottom of described insulating cylinder, the insulating cylinder tube, forms an overall structure.
3, the novel switching mechanism of on load tap changer according to claim 1, it is characterized in that, form three layers of through hole on the described insulating cylinder barrel by circle distribution, described each binding post is separately positioned in each self-corresponding through hole, one end is stretched and form binding post outside insulating cylinder, and the other end traverses to and forms a fixed contact mount pad in the insulating cylinder.
According to the novel switching mechanism of claim 1,2 or 3 described on load tap changeres, it is characterized in that 4, described insulating cylinder is made of unsaturated polyester glass fiber laminar film plastics.
5, the novel switching mechanism of on load tap changer according to claim 1, it is characterized in that, the diameter that described moving contact is installed support plate amplifies, when rotating with described central shaft, be located at moving contact group on this installation support plate and can contact and switch with fixed contact and be as the criterion.
6, the novel switching mechanism of on load tap changer according to claim 1 is characterized in that, the tube of described insulating cylinder is provided with the bearing pedestal of mounting center axle bearing at the end.
7, the novel switching mechanism of on load tap changer according to claim 1 is characterized in that, the top of described insulating cylinder is provided with upper flange, and described transmission mechanism is located in the upper flange.
8, the novel switching mechanism of on load tap changer according to claim 7, it is characterized in that, described insulating cylinder nozzle be provided with sealing ring between upper flange is connected, the position that described insulating cylinder nozzle outer wall combines with sealing ring is provided with sealing ring notch is installed.
9, the novel switching mechanism of on load tap changer according to claim 7 is characterized in that, described upper flange top is provided with top cover, and this top cover is provided with conservator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620044389 CN2938366Y (en) | 2006-07-31 | 2006-07-31 | Switchover mechanism of on-load tap changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620044389 CN2938366Y (en) | 2006-07-31 | 2006-07-31 | Switchover mechanism of on-load tap changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2938366Y true CN2938366Y (en) | 2007-08-22 |
Family
ID=38362392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620044389 Expired - Fee Related CN2938366Y (en) | 2006-07-31 | 2006-07-31 | Switchover mechanism of on-load tap changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2938366Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102024552A (en) * | 2009-09-15 | 2011-04-20 | 上海华明电力设备制造有限公司 | Large-rotating angle quick mechanism used for on-load tap-changer |
| CN103578711A (en) * | 2012-07-24 | 2014-02-12 | 莫诺工业有限公司 | Zero-load voltage retainer for ultra high voltage transformer |
-
2006
- 2006-07-31 CN CN 200620044389 patent/CN2938366Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102024552A (en) * | 2009-09-15 | 2011-04-20 | 上海华明电力设备制造有限公司 | Large-rotating angle quick mechanism used for on-load tap-changer |
| CN102024552B (en) * | 2009-09-15 | 2012-10-03 | 上海华明电力设备制造有限公司 | Large-rotating angle quick mechanism used for on-load tap-changer |
| CN103578711A (en) * | 2012-07-24 | 2014-02-12 | 莫诺工业有限公司 | Zero-load voltage retainer for ultra high voltage transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shanghai Huaming High-Voltage Switchgear Co., Ltd. Assignor: Huaming Power Equipment Manufacturing Co., Ltd., Shanghai Contract fulfillment period: 2007.8.31 to 2015.8.30 Contract record no.: 2008310000035 Denomination of utility model: Switchover mechanism of on-load tap changer Granted publication date: 20070822 License type: Exclusive license Record date: 20080917 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.8.31 TO 2015.8.30 Name of requester: SHANGHAI HUAMING HIGH-VOLTAGE ELECTRIC SWITCH MAN Effective date: 20080917 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070822 Termination date: 20150731 |
|
| EXPY | Termination of patent right or utility model |