CN201130595Y - Non-excitation bar-type tapping switch - Google Patents
Non-excitation bar-type tapping switch Download PDFInfo
- Publication number
- CN201130595Y CN201130595Y CNU2007200869296U CN200720086929U CN201130595Y CN 201130595 Y CN201130595 Y CN 201130595Y CN U2007200869296 U CNU2007200869296 U CN U2007200869296U CN 200720086929 U CN200720086929 U CN 200720086929U CN 201130595 Y CN201130595 Y CN 201130595Y
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- phase
- moving contact
- fixed contact
- drive screw
- bevel gear
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Abstract
The utility model relates to an exciterless strip tap switch in transformers, which comprises a strip insulator and a plurality of static contacts longitudinally arranged along the insulator at intervals; wherein, a moving contact assembly is arranged on each phase of the static contact; a moving contact of each moving contact assembly is bridged between two adjacent static contacts of each phase; a threaded sleeve of each moving contact assembly is matched with a power screw. The exciterless strip tap switch is characterized in that each phase of the static contact and the moving contact assembly are longitudinally and alternatively arranged on two sides of the insulator at intervals; the ends of the power screw arranged on the two adjacent phases of the moving contact assembly are jointed via a bevel gear pair, thus enabling each phase of power screw to synchronously rotate in the same direction. The exciterless strip tap switch has the advantages of simple structure, small external diameter, reasonable lead connection of the terminal posts, compact size of the charged body of the switch, less effective space occupation of the overall switch in the transformer, suitability for large and medium-sized transformers, adaptability to the transformers with various structures and wiring principles, low cost of manufacture and use cost, portable operation, and reliable running performance.
Description
Technical field
The utility model relates to a kind of no excitation strip-shape tap switch that is used for transformer.
Background technology
Off circuit tap changer can carry out pressure regulation to the output voltage of power transformer, and present application is very extensive.Heterogeneous strip-shape tap switch (being two-phase switch) shown in Fig. 1,4 on market, its structure comprises: insulator 1 and bearing 2, be installed on coaxial insulation drive screw 3,4 between bearing, every fixed contact 5 and moving contact 7 of being provided with mutually to inductive switch, dynamic and static contact is along the coaxial laying of axial homonymy of insulator, switch first line of a couplet operating mechanism 8.This switch is simple in structure owing to it, volume is little enjoys great popularity, and is promoted.But owing to be two, three phase times, switch is arranged vertically in the trigonum, slit of two coils, the connection lead-in wire that comes from adjacent windings like this has at least a phase line to stride across switch, it is not attractive in appearance to cause lead-in wire to be arranged like this, and make the electrified body volume increase during lead-in wire process switch, take the transformer inner space and increase, the advantage that former volume of switch is little is weakened.
Summary of the invention
Technical problem to be solved in the utility model be the deficiency that exists at above-mentioned prior art and provide a kind of simple in structure, be provided with rationally, take the no excitation strip-shape tap switch that the transformer inner space is little, cost of manufacture is low.
The utility model is that the technical scheme that problem adopted of the above-mentioned proposition of solution is: the insulator 1 that includes bar shaped, be installed on fixed contact 5 along insulator longitudinal separation, every phase fixed contact disposes a moving contact component 14, moving contact 7 cross-over connections in the moving contact component 14 are between the adjacent fixed contact of every phase two, swivel nut 10 and drive screw phase configuration in the moving contact component 14, it is characterized in that described every phase fixed contact and moving contact component longitudinally interleaved be arranged at the both sides of insulator, the drive screw that adjacent two-phase moving contact component is disposed is connected by the bevel gear parafacies from beginning to end, so that every phase drive screw all rotates synchronously in the same way.
Press such scheme, described bevel gear pair comprises driving bevel gear 11, intermediary wheel 20 and passive bevel gear 17, and wherein the number of teeth of driving bevel gear and passive bevel gear equates, the pitch of every phase drive screw is identical with thread rotary orientation.
Press such scheme, be installed on bearing 2, be used to install the drive screw of supporting and swivel nut 10 phase configuration at two of every phase fixed contact; Described first phase fixed contact and moving contact component are positioned at the side top of bar shaped insulator, drive screw 3 upper ends of first phase join by clutch 18 and switch operating mechanism 8, and drive screw 3 lower ends are connected with second mutually the drive screw 4 mutually by bevel gear is secondary.
Press such scheme, described fixed contact rear end and binding post 19 link, and fixed contact is cylindric or rectangular block shape; Described moving contact component 14 comprises the supporter 15 in draw-in groove cross section, and a side of supporter connects firmly swivel nut 10, and draw-in groove two inboards of supporter are provided with and the fixed contact 5 clip type moving contact of cross-over connection mutually.
Press such scheme, the fixed contact 5 of the described voltage regulation coil tap that whenever links can be provided with a plurality of, is generally 3-8.
Press such scheme, described every phase fixed contact and moving contact component can be crisscross arranged 2-3 vertically, constitute two-phase or three-phase strip-shape tap switch thus respectively.
The beneficial effects of the utility model are: 1, simple in structure, outside dimension is little, and the binding post lead-in wire connects rationally, switch electrified body size is little, it is little that whole switch takies the transformer useful space, be suitable for using in the large and medium-sized transformer, and can with the transformer phase configuration of various structures and connection principle; 2, making and use cost are low, operate lightly, and runnability is reliable, can be convenient to the simplification and the design of transformer material-saving of transformer device structure.
Description of drawings
Fig. 1 is existing no excitation strip-shape tap switch structure chart.
Fig. 2 is the structure chart of facing of an embodiment of the utility model.
Fig. 3 is the structure chart of facing of another embodiment of the utility model.
Fig. 4 is the E-E cutaway view among Fig. 2.
Fig. 5 is the F-F cutaway view among Fig. 2.
Embodiment
Further specify embodiment of the present utility model below in conjunction with accompanying drawing.
First embodiment such as Fig. 2,4, shown in 5, be that a setting two-phase does not have five grades of shunting switchs of excitation bar shaped, insulator 1 with a strip and block, every phase upper and lower side correspondence at insulator is installed on bearing 2, be provided with drive screw between two bearings, wherein an end of the drive screw 3 of first phase joins by clutch 18 and switch operating mechanism 8, drive screw 3 lower ends are connected with second mutually drive screw 4 upper ends that are arranged on opposite side mutually by bevel gear is secondary, described bevel gear pair comprises driving bevel gear 11, intermediary wheel 20 and passive bevel gear 17, wherein driving bevel gear and passive bevel gear respectively with first mutually drive screw 3 and the drive screw 4 of second phase link to each other, and it is fixing by pin 12, intermediary wheel is installed between two bevel gears, by insulator support, the number of teeth of driving bevel gear and passive bevel gear equates, the pitch of two drive screws is identical with thread rotary orientation, so that every phase drive screw all rotates synchronously in the same way.Be axially arranged with fixed contact 5 corresponding to drive screw along insulator 1, every mutually every row is provided with the fixed contact of 6 equi-spaced apart.The drive screw 3,4 of every phase respectively with swivel nut 10 phase configuration of moving contact component 14, described moving contact component comprises the supporter 15 in draw-in groove cross section, one side of supporter connects firmly mutually with swivel nut 10, the draw-in groove both sides of supporter opposite side are provided with and the adjacent two fixed contacts clip type moving contact of cross-over connection mutually, described clip type moving contact is made of bearing pin 9, moving contact 7 and return spring 8, clip-on two become one group, in the moving contact component also can inside and outside two groups of corresponding configurations with fixed contact are set, make contact-making surface bigger, contact performance is better.Can drive moving contact 7 by switch operating mechanism 8 rotation drive screws moves up and down, because two drive screws are synchronous rotations, therefore make same moved further with two moving contact components of its phase configuration, its swivel nut moves up or down when drive screw 3 rotates, and then driven drive screw 4 drives its swivel nuts and does and being synchronized with the movement up or down.Make transmission stability for improving gear, set up gear support 16 at the corresponding end of screw rod.In addition, arc-extinguish chamber 6 is arranged, the electrified body in the switch can be isolated from the outside like this, further reduce effective overall dimension of switch in the arranged outside of 2 of up and down two bearings.Fixed contact makes it to connect firmly with insulator by bearing pin 13 riveted joints, and the fixed contact afterbody is associated with binding post 19.
When this embodiment was positioned over the triangle interstice coverage of left and right sides adjacent windings, just one joined terminal 19 corresponding to left coil, and one joins terminal corresponding to right coil, and just corresponding with every tap lead connection does not exist certain phase tap lead to stride the phase problem like this.Simply, attractive in appearance, convenient, switch and the lead-in wire volume that takes up room is little.
Another embodiment of the utility model such as Fig. 3,4, shown in 5, for three-phase does not have the excitation strip-shape tap switch, it with the difference of a last embodiment be corresponding to second mutually the opposite side below of fixed contact and moving contact component set up third phase fixed contact and moving contact component, this third phase is in the same side mutually with first of top, the second phase drive screw, 4 lower ends are secondary by bevel gear to be connected mutually with the drive screw upper end of the third phase that is arranged on opposite side, connected structure is identical with the drive screw connected structure of second phase mutually with first, and every phase drive screw is all rotated synchronously in the same way.Be three-phase synchronous operation.No matter this threephase switch is positioned in arbitrary trigonum of two trigonums of three-phase transformer, and just two-phase binding post 19 is in a side, and another terminal that joins is in a side, and is all corresponding with the coil tap lead, and the same embodiment is the same for effect.
For the foregoing description, fixed contact two rows that can be arranged in parallel when electric current amplifies, the clip type moving contact on the same fixed contact also can be organized parallel connection more, to improve current capacity.
Claims (8)
1. one kind is not had the insulator (1) that the excitation strip-shape tap switch includes bar shaped, be installed on fixed contact (5) along insulator longitudinal separation, every phase fixed contact disposes a moving contact component (14), moving contact (7) cross-over connection in the moving contact component (14) is between the adjacent fixed contact of every phase two, swivel nut (10) in the moving contact component (14) and drive screw phase configuration, it is characterized in that described every phase fixed contact and moving contact component longitudinally interleaved be arranged at the both sides of insulator, the drive screw that adjacent two-phase moving contact component is disposed is connected by the bevel gear parafacies from beginning to end, so that every phase drive screw all rotates synchronously in the same way.
2. by the described no excitation strip-shape tap switch of claim 1, it is characterized in that described bevel gear pair comprises driving bevel gear (11), intermediary wheel (20) and passive bevel gear (17), wherein the number of teeth of driving bevel gear and passive bevel gear equates, the pitch of every phase drive screw is identical with thread rotary orientation.
3. by claim 1 or 2 described no excitation strip-shape tap switchs, it is characterized in that being installed on bearing (2), be used to install the drive screw of supporting and swivel nut (10) phase configuration at two of every phase fixed contact.
4. by claim 1 or 2 described no excitation strip-shape tap switchs, it is characterized in that every phase fixed contact and moving contact component can be crisscross arranged 2-3 vertically, constitute two-phase or three-phase strip-shape tap switch thus respectively, the first phase fixed contact and moving contact component are positioned at the side top of bar shaped insulator, the drive screw of first phase (3) upper end joins by clutch (18) and switch operating mechanism (8), and drive screw (3) lower end is connected with second mutually the drive screw (4) mutually by the bevel gear pair.
5. by claim 1 or 2 described no excitation strip-shape tap switchs, it is characterized in that described fixed contact rear end and binding post (19) link, fixed contact is cylindric or rectangular block shape.
6. by claim 1 or 2 described no excitation strip-shape tap switchs, it is characterized in that described moving contact component 14 comprises the supporter in draw-in groove cross section (15), one side of supporter connects firmly swivel nut (10), and draw-in groove two inboards of supporter are provided with and fixed contact (5) the clip type moving contact of cross-over connection mutually.
7. by the described no excitation strip-shape tap switch of claim 6, it is characterized in that described clip type moving contact is made of bearing pin (9), moving contact (7) and return spring (8).
8. by claim 1 or 2 described no excitation strip-shape tap switchs, it is characterized in that the fixed contact (5) of described every phase is provided with 3-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200869296U CN201130595Y (en) | 2007-09-12 | 2007-09-12 | Non-excitation bar-type tapping switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200869296U CN201130595Y (en) | 2007-09-12 | 2007-09-12 | Non-excitation bar-type tapping switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201130595Y true CN201130595Y (en) | 2008-10-08 |
Family
ID=40018461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200869296U Expired - Fee Related CN201130595Y (en) | 2007-09-12 | 2007-09-12 | Non-excitation bar-type tapping switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201130595Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243924A (en) * | 2011-04-01 | 2011-11-16 | 武汉长虹恒通高压设备有限公司 | Off-circuit bar-type modulating capacity tap-changer |
| CN106981382A (en) * | 2017-06-08 | 2017-07-25 | 山东民生电气设备有限公司 | A kind of low voltage tap changer |
-
2007
- 2007-09-12 CN CNU2007200869296U patent/CN201130595Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243924A (en) * | 2011-04-01 | 2011-11-16 | 武汉长虹恒通高压设备有限公司 | Off-circuit bar-type modulating capacity tap-changer |
| CN102243924B (en) * | 2011-04-01 | 2013-09-04 | 武汉长虹恒通高压设备有限公司 | Off-circuit bar-type modulating capacity tap-changer |
| CN106981382A (en) * | 2017-06-08 | 2017-07-25 | 山东民生电气设备有限公司 | A kind of low voltage tap changer |
| CN106981382B (en) * | 2017-06-08 | 2019-05-07 | 山东民生电气设备有限公司 | A kind of low voltage tap changer |
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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 |
Granted publication date: 20081008 Termination date: 20160912 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |