CN100530459C - Excitation-free positive-negative voltage-regulation tap changer - Google Patents
Excitation-free positive-negative voltage-regulation tap changer Download PDFInfo
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- CN100530459C CN100530459C CNB2006101250086A CN200610125008A CN100530459C CN 100530459 C CN100530459 C CN 100530459C CN B2006101250086 A CNB2006101250086 A CN B2006101250086A CN 200610125008 A CN200610125008 A CN 200610125008A CN 100530459 C CN100530459 C CN 100530459C
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- fixed contact
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Abstract
The invention involves a kind of off-circuit tap-changer without field excitation that is used for transformer, the features of which are the fixed contactor on each layer that is arranged on the insulator including the main coil tap (K) that connects with each phase, the output contactor (X) and the fixed contactor that connects with the pressure regulation coil, among which the quantity of the fixed contactor that connect with the main coil tap (K) and the quantity of the fixed contactor that connect with the pressure regulation coil tap is same and are arranged on a half circumference of one side of the insulator crisscross and intervalic, the quantity of the fixed contact of the output contactor (X) and the quantity of the fixed contactor that connnect with the tap of pressure regulation coil is same and are arranged on the opposite half circumference of the other side of the insulator crisscross and intervalic, two movable contacts subassembly are designed on the insulation axis by corresponding to the fixed contact on each layer. The invention does not only simplify the contact structure of switch, compress the axial structure of switch, reduce the height of switch dramatically, but also enhance the whole stiffness of switch, and makes it more beneficial to be connected outside and to be connected separated, distribute and arrange wirings as well as the disposal of the insulation among which, and makes it convenient to maintain.
Description
Technical field
The present invention relates to a kind of excitation-free positive-negative voltage-regulation tap changer that is used for transformer, is the improvement to existing off circuit tap changer.
Background technology
The different excitation-free positive-negative voltage-regulation tap changer of several structures has been proposed in Chinese patent 00230482.1,03275712.3.These switches have compact conformation, small and exquisite, characteristics such as profile is elongated, can make full use of the useful space of transformer.But be staggeredly arranged because its K layer and X layer are respectively levels,, make the switch axial length too high, cause some transformers on internal height, can't arrange with the raising of switching voltage grade and the increase of electric current.In addition, because switch spindle is long, contact in parallel is too much, and it is not enough that switch spindle rigidity seems, also makes switch main body rigidity variation simultaneously, thereby its scope of application is restricted.For a lot of three-winding on-load tap-changing transformers, generally loaded switch and off circuit tap changer are held layout altogether, the bigger excitation-free positive-negative voltage-regulation tap changer of enough spatial placement external diameter scopes is just arranged here, the structural advantage of above-mentioned switch is just no longer obvious.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of excitation-free positive-negative voltage-regulation tap to close at the deficiency of above-mentioned prior art existence, and it is not only simple and compact for structure, and axial dimension is short, good rigidity, and serviceability is reliable and stable, is convenient to safeguard.
The present invention is that to address the above problem the technical scheme of being taked as follows: include upper bracket 1 and undersetting 2, last, be installed on insulator 9 and insulation axle 5 between the undersetting, the upper end of insulation axle joins with the rotating shaft 3 that is threaded onto on the upper bracket, be installed on moving contact component on the insulation axle, circumferentially be installed on fixed contact in the insulator, including in every layer of fixed contact that its difference is to arrange on insulator whenever links is connected to the fixed contact 15 of main coil tap (K), the fixed contact 16 of output contact (X) and the fixed contact 13 that is connected in voltage regulation coil, wherein fixed contact 13 quantity that are connected to the fixed contact 15 of main coil tap (K) and are connected in the voltage regulation coil tap at the half circumference first line of a couplet of insulator one side equate and staggeredly arrange at interval, the insulator opposite side to semi-circumference on export contact (X) fixed contact 16 equate with fixed contact 13 quantity that connect the voltage regulation coil tap and staggered layout at interval, half-and-half the fixed contact of arranging 15 that is connected in main coil tap (K) equate with fixed contact 16 quantity of exporting contact (X) and cloth set symmetrical, half-and-half the cloth set and the coupled position of the fixed contact 13 of the connection voltage regulation coil tap of arranging are also symmetrical, be provided with two moving contact components corresponding to every layer of fixed contact insulation axle, two moving contact components are along circumferential 180 ° of symmetric arrangement and each moving contact component and two adjacent fixed contact cross-over connections mutually.
Press such scheme, described dynamic and static structure of contact terminal is 1～3 layer, can constitute single-phase, two-phase or the positive and negative tune switch of three-phase respectively.
Press such scheme, the fixed contact of the described fixed contact that is connected in main coil tap (K) 15 and output contact (X) 16 every layer be respectively 3～8, constitute 5～13 switch gears.
Press such scheme, described insulator can be cage type or tubular construction.
Press such scheme, described moving contact component comprise the supporter 10 that links with insulation axle and with the moving contact 8 of fixed contact cross-over connection, install moving contact 8 by bearing pin 6 and spring 7 on the supporter 10.
Beneficial effect of the present invention is:
1, with one mutually in the fixed contact combination of a plurality of positive-negative voltage-regulations to be arranged in insulator circumferential with one deck, not only simplified the structure of contact terminal of switch, and compressed the axial arrangement of switch, the switch height is reduced greatly, thereby adapted to some transformer height limitation requirements, also reduced rigidity requirement simultaneously main shaft and Switch main body.
2, the switch external diameter strengthens and helps strengthening the main shaft size, has improved the integral rigidity of switch, also is more conducive to switch simultaneously and outreaches tap lead arrangement and insulation processing therebetween, and be convenient to safeguard.
3, moving contact becomes 180 ° of symmetric arrangement, and moving contact is offset the reaction force symmetry of main shaft, and the main shaft bending resistance will further strengthen, and more help the stable of contact pressure simultaneously.
Description of drawings
Fig. 1 is the positive view of one embodiment of the present of invention.
Fig. 2 is the E-E cutaway view among Fig. 1.
Fig. 3 is the elementary diagram of one embodiment of the present of invention.
Embodiment
Describe embodiments of the invention below in conjunction with accompanying drawing.For a kind of single-phase (A phase) five grades of excitation-free positive-negatives are transferred shunting switch, this switch is columnar structured, include upper bracket 1 and undersetting 2, between upper and lower bearing, be installed on the insulation axle 5 of cylindrical shape insulator 9 and square-section, the upper end of insulation axle links with the rotating shaft 3 that is threaded onto on the upper bracket, and the rotating shaft upper end joins with operating mechanism 4; In insulator, circumferentially be installed on one deck fixed contact, include fixed contact 15, the output contact (X) that is connected in main coil W tap (K) in the described fixed contact and be connected in voltage regulation coil W by screw 12
1, W
2The fixed contact 13 of tap, the fixed contact 15 that wherein is connected in main coil tap (K) respectively has 3 with the fixed contact 13 that is connected in the voltage regulation coil tap, staggered interval is arranged on half circumference of insulator one side, and 3 fixed contacts 13 that connect voltage regulation coil tap (1,2,3) are arranged in the direction of the clock; The fixed contact 16 of output contact (X) respectively has 3 with the fixed contact 13 that connects the voltage regulation coil tap, staggered interval be arranged in the insulator opposite side on the semi-circumference, 3 fixed contacts 13 that connect voltage regulation coil tap (1,2,3) are by the counter clockwise direction layout; The fixed contact of half-and-half arranging that is connected in main coil tap (K) 15 is symmetrical with the fixed contact 16 cloth set left and right sides of output contact (X), and half-and-half also the left and right sides is symmetrical for the cloth set of the fixed contact 13 of the connection voltage regulation coil tap of arranging and coupled position; Fixed contact is column, the cross section is a large semi-circular, the rear end of each fixed contact and binding post 17 link, main coil tap (K) in the layer together, output contact (X), voltage regulation coil tap (1,2,3) are passed through binding post 17 usefulness flow deflectors 14 short circuits with the identical contact that connects the position respectively, link with the transformer tap lead again.Be provided with two moving contact components corresponding to every layer of fixed contact insulation axle, two moving contact components are along circumferential 180 ° of symmetric arrangement and each moving contact component and two adjacent fixed contact cross-over connections mutually, described moving contact component comprise with insulation axle 5 supporters that link 10 and with the round moving contact 8 of fixed contact cross-over connection, install round moving contact 8 by bearing pin 6 and spring 7 on the supporter 10, supporter 10 is fixed on the insulation axle by bolt 18, the round moving contact is provided with 4～6 down vertically by the big I of switching current, to improve its contact performance.Two one of moving contact components are matched with the fixed contact 13 that is connected in the voltage regulation coil tap with the fixed contact of half-and-half arranging that is connected in main coil tap (K) 15, another fixed contact 16 with the output contact (X) that other half-and-half arranges is matched with the fixed contact 13 that connects the voltage regulation coil tap, two moving contact component mutually insulateds.
When 5 rotations of operating mechanism actuating rotating shaft 3 drive insulation axles, the moving contact 8 of both sides rotates the completing place conversion simultaneously, and its operating position concerns as following table:
| Tap position | The pressure regulation position | The left side connects | The right side connects | Number of |
| 1 | +2 | K-3 | 1-X | W+W1+W2 |
| 2 | +1 | K-2 | 1-X | W+ |
| 3 | 0 | K-2 | 2-X | W |
| 4 | -1 | K-1 | 2-X | W-W2 |
| 5 | -2 | K-1 | 3-X | W-W1-W2 |
In the present embodiment, during switching manipulation, moving contact is crossed the dead point and is discharged automatic archiving, and feel is strong, reliability is high.The switch integral rigidity is good, the reliability height.
Dynamic/static contact structure of the present invention can be two-layer or three layers, and every layer of structure is identical, then constitutes two-phase or three-phase excitation-free positive-negative and transfers shunting switch, and alternate output contact short circuit then constitutes the three-phase Y connection, otherwise forms star-star-delta connection Y-Y-or other special white relation.
Claims (9)
1, a kind of excitation-free positive-negative voltage-regulation tap changer, include upper bracket (1) and undersetting (2), last, be installed on insulator (9) and insulation axle (5) between the undersetting, the upper end of insulation axle joins with the rotating shaft (3) that is threaded onto on the upper bracket, be installed on moving contact component on the insulation axle, circumferentially be installed on fixed contact in the insulator, the fixed contact (15) that including in the every layer of fixed contact that it is characterized in that arranging on insulator whenever links is connected to main coil tap (K), the fixed contact (16) of output contact (X) and be connected in the fixed contact (13) of voltage regulation coil, wherein fixed contact (13) quantity that is connected to the fixed contact (15) of main coil tap (K) and is connected in the voltage regulation coil tap at the half circumference first line of a couplet of insulator one side equates and staggeredly arranges at interval, the insulator opposite side to semi-circumference on export contact (X) fixed contact (16) equate with fixed contact (13) quantity that connects the voltage regulation coil tap and staggered layout at interval, half-and-half the fixed contact of arranging that is connected in main coil tap (K) (15) equate with fixed contact (16) quantity of exporting contact (X) and cloth set symmetrical, half-and-half the cloth set and the coupled position of the fixed contact (13) of the connection voltage regulation coil tap of arranging are also symmetrical, be provided with two moving contact components corresponding to every layer of fixed contact insulation axle (5), two moving contact components are along circumferential 180 ° of symmetric arrangement and each moving contact component and two adjacent fixed contact cross-over connections mutually.
2, by the described excitation-free positive-negative voltage-regulation tap changer of claim 1, it is characterized in that described dynamic and static structure of contact terminal is 1～3 layer, can constitute single-phase, two-phase or the positive and negative tune switch of three-phase respectively.
3, by claim 1 or 2 described excitation-free positive-negative voltage-regulation tap changers, it is characterized in that the described fixed contact (15) that is connected in main coil tap (K) is respectively 3～8 for every layer with the fixed contact (16) of exporting contact (X), constitutes 5～13 switch gears.
4, by claim 1 or 2 described excitation-free positive-negative voltage-regulation tap changers, it is characterized in that described insulator can be cage type or tubular construction.
5, by claim 1 or 2 described excitation-free positive-negative voltage-regulation tap changers, it is characterized in that described moving contact component comprise the supporter (10) that links with insulation axle (5) and with the moving contact (8) of fixed contact cross-over connection, install moving contact (8) by bearing pin (6) and spring (7) on the supporter.
6, by the described excitation-free positive-negative voltage-regulation tap changer of claim 5, it is characterized in that described moving contact is the round moving contact, upper and lower settings is 4～6 vertically.
7, by claim 1 or 2 described excitation-free positive-negative voltage-regulation tap changers, it is characterized in that fixed contact is column, the cross section is a large semi-circular, the rear end of each fixed contact and binding post (17) link, main coil tap (K) in the layer together, output contact (X), voltage regulation coil tap (1,2,3) are passed through binding post (17) with flow deflector (14) short circuit with the identical contact that connects the position respectively, link with the transformer tap lead again.
8, by claim 1 or 2 described excitation-free positive-negative voltage-regulation tap changers, the fixed contact that is connected in main coil tap (K) (15) that it is characterized in that double layout is symmetrical with fixed contact (16) the cloth set left and right sides of output contact (X), and half-and-half also the left and right sides is symmetrical for the cloth set of the fixed contact (13) of the connection voltage regulation coil tap of arranging and coupled position.
9, by claim 1 or 2 described excitation-free positive-negative voltage-regulation tap changers, it is characterized in that one of two moving contact component and the fixed contact of half-and-half arranging that is connected in main coil tap (K) (15) and be connected in the fixed contact (13) of voltage regulation coil tap matched, the fixed contact (16) of the output contact (X) that another and other half-and-half arrange and to connect the fixed contact (13) of voltage regulation coil tap matched, two moving contact component mutually insulateds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101250086A CN100530459C (en) | 2006-11-13 | 2006-11-13 | Excitation-free positive-negative voltage-regulation tap changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101250086A CN100530459C (en) | 2006-11-13 | 2006-11-13 | Excitation-free positive-negative voltage-regulation tap changer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1979703A CN1979703A (en) | 2007-06-13 |
| CN100530459C true CN100530459C (en) | 2009-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101250086A Expired - Fee Related CN100530459C (en) | 2006-11-13 | 2006-11-13 | Excitation-free positive-negative voltage-regulation tap changer |
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| CN (1) | CN100530459C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101452758B (en) * | 2007-12-04 | 2011-09-28 | 任宏宇 | Tap switch fixed contact array of unequal turn positive and negative pressure regulating manner |
| CN101572174B (en) * | 2009-03-06 | 2013-03-13 | 武汉泰普变压器开关有限公司 | Unloading off-circuit tapping switch |
| CN106158309B (en) * | 2016-08-30 | 2019-03-15 | 武汉泰普变压器开关有限公司 | A kind of seven grades of off circuit tap changers of positive-negative voltage-regulation |
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2006
- 2006-11-13 CN CNB2006101250086A patent/CN100530459C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1979703A (en) | 2007-06-13 |
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