CN2821821Y - Drum shape no-exciting tap changer - Google Patents
Drum shape no-exciting tap changer Download PDFInfo
- Publication number
- CN2821821Y CN2821821Y CN 200520044203 CN200520044203U CN2821821Y CN 2821821 Y CN2821821 Y CN 2821821Y CN 200520044203 CN200520044203 CN 200520044203 CN 200520044203 U CN200520044203 U CN 200520044203U CN 2821821 Y CN2821821 Y CN 2821821Y
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- China
- Prior art keywords
- main shaft
- insulation main
- contact
- tap changer
- cylindrical shape
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- Expired - Fee Related
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Abstract
The utility model provides a drum-shaped no-exciting tap changer which comprises an outer cylinder, multiple static contacts installed on the outer cylinder, an upper and a lower supporting disks arranged in the outer cylinder, a center shaft installed between the upper and the lower supporting disks, and a moving contact installed on the center shaft, wherein the center shaft comprises an upper joint, a cylinder-shaped insulation main shaft and a lower joint which are connected in sequence; the upper joint is installed on the upper supporting disk, the lower joint is installed on the lower supporting disk, and the insulation main shaft rotates along the centers of the upper and the lower supporting disks through the upper and the lower joints; a gap is arranged at the corresponding position of the cylinder-shaped insulation main shaft to the static contacts, and the moving contact is installed in the gap. The drum-shaped no-exciting tap changer of the utility model can bear a large radial force and is favorable for bearing a tangential force, both of the contact position accuracy and the contact action reliability of the tap changer are greatly enhanced, and both of the contact pressure and the contact operation force are changed slightly when every shift converts.
Description
Technical field
The utility model relates to a kind of electric equipment, relates in particular to a kind of cydariform off circuit tap changer.
Background technology
Off circuit tap changer is used for power transformer or industrial transformers, under the situation of transformer outage, realizes the conversion of Transformer Winding tap by the tap conversion of switch, thereby adjusts the output voltage of transformer.
Existing cydariform off circuit tap changer comprises urceolus 11, is installed in a plurality of fixed contacts 12 on the urceolus, is arranged on pallet up and down 13,14 in the urceolus, is installed in the central shaft 15 between the pallet up and down and is installed in moving contact 16 on the central shaft 15 as shown in Figure 1 and Figure 2.Urceolus 11 is main support section, not only be installed in the transformer switch is fastening, and each fixed contact 12 also is fixedly installed in corresponding position on its circumference.Pallet 13,14 is connected firmly by screw 17 and urceolus respectively up and down, respectively is provided with a centre bore 131,141 in the center of two pallets.Central shaft 15 is made up of top connection 151, lower contact 152 and insulation main shaft 153, and last lower contact connects firmly with the insulation main shaft respectively, and inserts in the centre bore of pallet up and down rotatablely respectively, and the insulation main shaft rotates by the center of pallet about the last lower contact edge.Insulation main shaft 153 is rectangular bar shaped, insulation main shaft 153 with the corresponding position of fixed contact, be provided with a breach 1531, moving contact 16 is installed in this breach, and is connected as a single entity concentricity rotation by screw 18 and insulation main shaft.
The operation principle of cydariform off circuit tap changer is, when a certain tap position, moving contact is connected across between certain two fixed contact, when needs carry out the tap conversion, the stressed rotation of top connection drives the insulation main shaft and rotate, and then the drive moving contact turns between the two adjacent fixed contacts, and with its conducting, thereby realize the tap conversion.
The insulation main shaft of the cydariform off circuit tap changer of prior art is rectangular bar shaped, finds to exist following shortcoming in running:
1, make the stress of insulation main shaft unbalanced
For this type of switch of heterogeneous coaxial, voltage levels, big current specification, its total height is higher, so the main shaft that insulate is subjected to sizable radial load when resting position, and when transforming gear, need bear sizable tangential force again.For rectangular bar shaped insulation main shaft, because long-term stress is unbalanced, easily cause distortion, thereby cause the accident that dynamic and static contact contact is unreliable even generation is more serious;
2, processing request height, assembling is adjusted inconvenient
Be to guarantee that the shunting switch dynamic/static contact can reliable break-make, require top connection and lower contact and insulation spindle mounted after, unanimity is wanted at its center.And rectangular bar shaped insulation main shaft unusual difficulty in centering center during with last lower contact assembling requires highly to part processing, and crudy be cannot say for sure to demonstrate,prove;
Summary of the invention
The purpose of this utility model is to overcome the problems referred to above that the cydariform off circuit tap changer of prior art exists, and a kind of cydariform off circuit tap changer of new structure is provided.
The purpose of this utility model is achieved in that a kind of cydariform off circuit tap changer, comprises urceolus, is installed in a plurality of fixed contacts on the urceolus, is arranged on pallet up and down in the urceolus, is installed in the central shaft between the pallet up and down and is installed in moving contact on the central shaft; Described central shaft comprises top connection, insulation main shaft and the lower contact that order links to each other, top connection is installed on the top tray, lower contact is installed in down on the pallet, the insulation main shaft is by the center rotation of pallet up and down of last lower contact edge, moving contact is installed on the insulation main shaft, is characterized in that described insulation main shaft is cylindrical, cylindrical shape insulation main shaft be provided with a breach with the corresponding position of fixed contact, described moving contact is installed in this breach.
Above-mentioned cydariform off circuit tap changer, wherein, described top connection and lower contact are respectively equipped with the adaptive contiguous block of internal diameter with cylindrical shape insulation main shaft at the link with cylindrical shape insulation main shaft, and top connection and the lower contact contiguous block by separately respectively are nested in the cylinder of cylindrical shape insulation main shaft and are fixedly linked with the insulation main shaft.
Above-mentioned cydariform off circuit tap changer, wherein, an engaging lug is respectively extended at the two ends up and down of described moving contact, and moving contact is fixedly linked by the barrel at two ends about two engaging lugs about it and the cylindrical shape insulation main shaft breach.
The utility model cydariform off circuit tap changer makes it compared with prior art owing to adopted above technical scheme, has following advantage and characteristics:
1, cylindrical shape insulation main shaft is compared rectangular bar shaped insulation main shaft and not only can be born big radial load, and is very beneficial for bearing tangential force;
2, the contact position precision of shunting switch and reliable in action all have sizable raising;
3, because cylindrical shape insulation main shaft itself has pivot, top connection, lower contact are insulated with cylindrical shape after the spindle mounted, and its center is the nature unanimity, so during each transforming gear, contact pressure and operating physical force all change not quite.
Description of drawings
Fig. 1 is the structural representation of prior art cydariform off circuit tap changer;
Fig. 2 is that the A-A of cydariform off circuit tap changer shown in Figure 1 is to view;
Fig. 3 is the structural representation of the utility model cydariform off circuit tap changer;
Fig. 4 is that the B-B of cydariform off circuit tap changer shown in Figure 3 is to view.
Embodiment
Referring to Fig. 3, Fig. 4, the utility model cydariform off circuit tap changer comprises urceolus 21, is installed in a plurality of fixed contacts 22 on the urceolus, is arranged on pallet up and down 23,24 in the urceolus, is installed in the central shaft 25 between the pallet up and down and is installed in moving contact 26 on the central shaft 25.Urceolus 21 is main support section, not only be installed in the transformer switch is fastening, and each fixed contact 22 also is fixedly installed in corresponding position on its circumference.Pallet 23,24 is connected firmly by screw 27 and urceolus respectively up and down, respectively is provided with a centre bore 231,241 in the center of two pallets.Central shaft 25 comprises top connection 251, cylindrical shape insulation main shaft 253 and the lower contact 252 that order links to each other, top connection 251 is installed in the centre bore 231 of top tray 23, lower contact 252 is installed in down in the centre bore 241 of pallet 24, top connection 251 is provided with the adaptive contiguous block 2511 of internal diameter with cylindrical shape insulation main shaft at the link with cylindrical shape insulation main shaft 253, and top connection 251 is nested in by its contiguous block 2511 in the cylinder of cylindrical shape insulation main shaft upper end and by screw 29 and insulation main shaft and is fixedly linked.Lower contact 252 is provided with the adaptive contiguous block 2521 of internal diameter with cylindrical shape insulation main shaft at the link with cylindrical shape insulation main shaft 253, and lower contact 252 is nested in by its contiguous block 2521 in the cylinder of lower end of cylindrical shape insulation main shaft and by screw (not shown) and insulation main shaft and is fixedly linked.Insulation main shaft 253 is by the center rotation of pallet up and down of last lower contact edge.The insulation main shaft 253 be provided with a breach 2531 with fixed contact 22 corresponding positions, an engaging lug 261,262 is respectively extended at the two ends up and down of moving contact 26, moving contact by its up and down the insulate barrel at two ends up and down of main shaft breach 2531 of two engaging lugs and cylindrical shape be fixedly linked and be installed in this breach 2531, and be connected as a single entity concentricity rotation by screw 28 and insulation main shaft.
Claims (3)
1, a kind of cydariform off circuit tap changer comprises urceolus, is installed in a plurality of fixed contacts on the urceolus, is arranged on pallet up and down in the urceolus, is installed in the central shaft between the pallet up and down and is installed in moving contact on the central shaft; Described central shaft comprises top connection, insulation main shaft and the lower contact that order links to each other, top connection is installed on the top tray, lower contact is installed in down on the pallet, the insulation main shaft is by the center rotation of pallet up and down of last lower contact edge, moving contact is installed on the insulation main shaft, it is characterized in that: described insulation main shaft is cylindrical, cylindrical shape insulation main shaft be provided with a breach with the corresponding position of fixed contact, described moving contact is installed in this breach.
2, cydariform off circuit tap changer as claimed in claim 1, it is characterized in that: described top connection and lower contact are respectively equipped with the adaptive contiguous block of internal diameter with cylindrical shape insulation main shaft at the link with cylindrical shape insulation main shaft, and top connection and the lower contact contiguous block by separately respectively are nested in the cylinder of cylindrical shape insulation main shaft and are fixedly linked with the insulation main shaft.
3, cydariform off circuit tap changer as claimed in claim 1 is characterized in that: an engaging lug is respectively extended at the two ends up and down of described moving contact, and moving contact is fixedly linked by the barrel at two ends about two engaging lugs about it and the cylindrical shape insulation main shaft breach.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520044203 CN2821821Y (en) | 2005-08-10 | 2005-08-10 | Drum shape no-exciting tap changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520044203 CN2821821Y (en) | 2005-08-10 | 2005-08-10 | Drum shape no-exciting tap changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2821821Y true CN2821821Y (en) | 2006-09-27 |
Family
ID=37018375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520044203 Expired - Fee Related CN2821821Y (en) | 2005-08-10 | 2005-08-10 | Drum shape no-exciting tap changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2821821Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101673637B (en) * | 2008-09-09 | 2012-02-08 | 宝元数控精密股份有限公司 | Range switch |
-
2005
- 2005-08-10 CN CN 200520044203 patent/CN2821821Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101673637B (en) * | 2008-09-09 | 2012-02-08 | 宝元数控精密股份有限公司 | Range switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060927 Termination date: 20130810 |