CN2791844Y - Excitation-free tap changer - Google Patents
Excitation-free tap changer Download PDFInfo
- Publication number
- CN2791844Y CN2791844Y CN 200520095801 CN200520095801U CN2791844Y CN 2791844 Y CN2791844 Y CN 2791844Y CN 200520095801 CN200520095801 CN 200520095801 CN 200520095801 U CN200520095801 U CN 200520095801U CN 2791844 Y CN2791844 Y CN 2791844Y
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- contacts
- decide
- main insulation
- moving contact
- fixed
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- 238000009413 insulation Methods 0.000 claims abstract description 64
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000012212 insulator Substances 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 238000001035 drying Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 241000555745 Sciuridae Species 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
The utility model relates to an excitation-free tap switch, particularly a three-phase combined drum-shaped excitation-free tap switch. The utility model is composed of three parts, a main insulator, a fixed contact group, and movable contact groups, wherein the fixed contact group is matched with three grooves of an upper and a lower supporting plates of the fixed contact group through a fixed insulation pipe of the main insulator and three teeth which support the insulation pipe, and is fixed on the main insulation pipe through screw bolts and screw nuts to form a whole; the movable contact groups are fixed on a main insulation shaft through screws, and are corresponding to the positions of three groups of the movable contact groups. The movable contact groups of the utility model are switched from one service position to another service position and have a function of automatic homing and a hand feeling of automatic homing, the turning moment is small, the contact pressure between the movable contact groups and the fixed contact group is uniform, and the operation can be carried out in a dry state. Because the structure of the switch combines an enclosed type structure and an open type structure, the utility model can separate an electrified body from outside and is convenient for circulation of electric insulating oil.
Description
Technical field
The utility model relates to a kind of off circuit tap changer, particularly a kind of three phase combined cydariform off circuit tap changer, and this switch application is in large and medium-sized oil-immersed power transformer or oil immersed type special transformer.
Background technology
The three-phase off circuit tap changer that is applied to large and medium-sized oil-immersed power transformer or oil immersed type special transformer at present has two kinds of structures.A kind of is the three-phase drum organization, and another kind is a three-phase squirrel cage shape structure, and all there are some drawbacks in these two kinds of structures.The defective that three-phase squirrel cage shape structure exists: overall volume is big, has increased the manufacturing cost of main frame transformer; Electrified body all is in naked state, is not easy to insulation processing; Do not have feel during operation, movable contact spring does not have the automatic homing function, easily causes movable contact spring not reach the position.There is defective in the three-phase drum organization: the three-phase electrified body is in together in the insulating cylinder of a relative closure, is not easy to transformer oil circulation, causes the transformer temperature rise to raise, and assembling, inconvenient maintenance; Rotating torque is big, is difficult for adjusted under drying regime.
Summary of the invention
The utility model provides a kind of three phase combined cydariform off circuit tap changer in order to overcome the drawback that above-mentioned two kinds of structures exist.The moving contact group of this switch switches to another station from a station and has automatic homing function and automatic homing feel, and rotating torque is little, moving, deciding sets of contacts, to press power indirectly even, under drying regime, all can operate, because the structure of this switch is the combination of enclosed type and open type, thereby it can separate electrified body and outside and be convenient to transformer oil and circulates.
A kind of off circuit tap changer, by the main insulation body, decide sets of contacts, moving contact group three parts are formed, it is characterized in that: the main insulation body is made up of main insulation pipe 1, main insulation axle 12, fixed insulation pipe 2 and supports insulative pipe 20, connects in aggregates by bolt 3, nut 4; Decide sets of contacts by upper supporting plate 6, plug screw 7, decide contact (8,9), lower carrier plate 10 is formed, will decide contact (8,9) by plug screw 7 and connector lug 11 and be fixed on upper supporting plate 6, the lower carrier plate 10 to form and decide sets of contacts; The moving contact group is made up of supporter 15, spring 16, fairlead 17, moving contact 18, bearing pin 19, spring 16 is packed in the hole of supporter 15, spring 16 is with fairlead 17, moving contact 18 is arranged in the groove of supporter 15, passes moving contact 18 and supporter 15 hole between the two fixes by bearing pin 19; Decide sets of contacts by the fixed insulation pipe 2 of main insulation body and three teeth and the upper supporting plate 6 of deciding sets of contacts, lower carrier plate 10 three-flutes coupling of supports insulative pipe 20, be fixed on by bolt 3, nut 4 and form an integral body on the main insulation pipe 1; The moving contact group is fixed on the main insulation axle 12 by screw 14, and corresponding with three groups of moving contact group positions.
Described main insulation axle 12 axle center and main insulation pipe 1, to decide sets of contacts concentric, and external diameter and the centre bore of deciding upper supporting plate 6 in the sets of contacts, lower carrier plate 10 are movingly and concentric with it rotation.
Describedly decide contact (8,9) for cylindrical, and two ends are designed to oblate.Described moving contact 18 is semicircle, and the centre has mounting hole.
Moving contact group of the present utility model switches to another station from a station and has automatic homing function and automatic homing feel, and rotating torque is little, moving, deciding sets of contacts, to press power indirectly even, under drying regime, all can operate, because the structure of this switch is the combination of enclosed type and open type, thereby it can separate electrified body and outside and be convenient to transformer oil and circulates.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is a N-N cutaway view of the present utility model.
Fig. 3 is a moving contact group structural representation.
Fig. 4 is a moving contact group dextrad half sectional view.
Fig. 5 is for deciding the sets of contacts structural representation.
Fig. 6 is for deciding sets of contacts A-A cutaway view.
Fig. 7 voltage-regulation principle figure.
Fig. 8 is for to decide contact 8 two ends to view.
Fig. 9 is for to decide contact 9 two ends to view.
Figure 10 is the structural front view of moving contact.
Embodiment
Reaching operation principle in conjunction with the accompanying drawings is further described the utility model.
The utility model design feature:
1, as Fig. 1, the switch main body structure is the combination of enclosed type and open type, not only isolates exposed electrified body but also be convenient to the transformer oil circulation.Have on the tube wall because of the main insulation pipe 1 of switch to see and look into hole and fairlead, see at main insulation pipe 1 and look into Kong Chu and be set with isolated tube 13, this isolated tube 13 can be around 1 rotation of main insulation pipe.Also have on the isolated tube 13 to see and look into hole and stopper slot, can see by rotation isolated tube 13 and look into or the isolating switch internal structure.When the stopper slot on the isolated tube 13 blocks bolt 3, can stop isolated tube 13 independently to rotate.Exhausted knot processing has been carried out according to the difference of the class of insulation in 11 surfaces, passes corresponding connection with the transformer tap lead from fairlead, and the hole is looked in the sight on the main insulation pipe 1 and fairlead also is convenient to the transformer oil circulation except that above-mentioned functions, to reduce the temperature rise of switch inside.
2, three-phase moving contact group in the Switch main body, to decide sets of contacts be a kind of combining structure, not only guaranteed switch performances but also be convenient to install, safeguard, as shown in Figure 1, decide sets of contacts and see Fig. 5, Fig. 6, decide contact 8 structures and see Fig. 8, decide contact 9 structures and see Fig. 9, decide sets of contacts by upper supporting plate 6, plug screw 7, decide contact (8,9), lower carrier plate 10 is formed, the three-flute coupling of three teeth by fixed insulation pipe 2 and supports insulative pipe 20 and upper supporting plate 6, lower carrier plate 10 is utilized bolt 3, nut 4 to be fixed on and is formed a fixing integral body on the main insulation pipe 1.
3, the moving contact group is seen Fig. 3, is made up of supporter 15, spring 16, fairlead 17, moving contact 18, bearing pin 19, is fixed on the main insulation axle 12 by screw 14, and is corresponding with three groups of moving contact group positions respectively.Main insulation axle 12 axle center and main insulation pipe 1, to decide sets of contacts concentric, and external diameter with decide upper supporting plate 6 in the sets of contacts, lower carrier plate 10 centre bores movingly and concentric with it rotation.The moving contact group can automatic homing in transfer process, and produces the automatic homing feel, and rotating torque is little, and is moving, decide sets of contacts and press power indirectly symmetrically and evenly.
From Fig. 3, Fig. 4 as can be seen moving contact 18 constrain in supporter 15 grooves by bearing pin 19, it both can be made certain radial alignment along the groove of supporter 15 and move, and can rotate to an angle around bearing pin 19 again, simultaneously makes circular motion with main insulation axle 12 again.The structure of moving contact is seen Figure 10.When transmission mechanism blocked bayonet lock 5 rotation main insulation axles 12, the moving contact group is rotation synchronously thereupon.When moving contact 18 rotates to when deciding contact 9 face of cylinder peaks, spring 16 is in maximum energy storage state.Because coherence effect when the elastic force of spring 16 and moving contact 18 self rotate, this moment, moving contact 18 played pendulum, can quick and precisely cut two of λ decides between the sets of contacts, and the playback that generation is split by force is in feel, the elastic force of spring 16 transmits by fairlead 17 simultaneously, at moving contact 18 and decide between the contact 9 to produce enough contact pressures, because the point of application of spring 16 directly is arranged in moving contact 18 and decides the position that contact 9 contacts, thereby the operation rotating torque is little, and is moving, decide sets of contacts and press power indirectly symmetrically and evenly.
This switch is made up of transmission mechanism and Switch main body, and wherein transmission mechanism is a known technology, no longer illustrates at this, and the Switch main body structure is seen Fig. 1, Switch main body mainly by the main insulation body, decide sets of contacts, moving contact group three parts are formed.The main insulation body is made up of main insulation pipe 1 and main insulation axle 12, by bolt 3, nut 4, fixed insulation pipe 2 and supports insulative pipe 20 main insulation pipe 1 and main insulation axle 12 is fixed into switch main insulation body; Decide sets of contacts by upper supporting plate 6, plug screw 7, decide contact (8,9), lower carrier plate 10 is formed, will decide contact (8,9) by plug screw 7 and connector lug 11 and be fixed on upper supporting plate 6, the lower carrier plate 10 to form and decide sets of contacts; The deciding contact and wouldn't install of the hole of the diameter 28mm in upper supporting plate 6, the lower carrier plate 10 place wherein is so that final assembly; The moving contact group is by supporter 15, spring 16, fairlead 17, moving contact 18, bearing pin 19 is formed, getting 2 springs 16 is respectively charged in two holes of supporter 15 same grooves, put fairlead 17 again, in 18 card entry slots, and the hole of moving contact 18 and the hole of supporter 15 are coincided, again bearing pin 19 is passed from the hole and the fixing moving contact group of forming, decide sets of contacts by the main insulation body fixed insulation pipe 2 and three teeth of supports insulative pipe 20 with decide sets of contacts upper supporting plate 6, lower carrier plate 10 three-flutes coupling, by bolt 3, nut 4 is fixing in aggregates, the moving contact group is fixed on the main insulation axle 12 by screw 14, and corresponding with three groups of moving contact group positions.
The assembly process of Switch main body is seen Fig. 1.
The first step: assembling A, B gets along decides sets of contacts, at first with 1 supports insulative pipe, 20 usefulness bolts 3, nut 4 is fixed on the A of main insulation pipe 1, between the B phase, decide sets of contacts with two again and place main insulation pipe 1, maintenance two is decided the sets of contacts reservation and is decided the contact empty place is looked into the hole in the sight of main insulation pipe 1 position, and make and decide upper supporting plate 6 in the sets of contacts, three teeth of the supported insulated tube 20 of the three-flute of lower carrier plate 10 block, utilize another part supports insulative pipe 20 and a fixed insulation pipe 2 to block the three-flute of deciding the sets of contacts other end again, and utilize bolt 3, nut 4 is fixed on fixed insulation pipe 2 and supports insulative pipe 20 on the main insulation pipe 1.
Second step: assembling main insulation axle 12 and C get along decides sets of contacts, at first get along and decide to load onto axle sleeve 21 on the upper supporting plate 6 that lower carrier plate 10 in the sets of contacts and C get along at A, main insulation axle 12 being penetrated A, B gets along and decides in the centre bore of sets of contacts again, then C is got along and decide sets of contacts and be inserted on the main insulation axle 12, and keep itself and A, B to get along deciding the sets of contacts orientation consistent, utilize first step same procedure to decide sets of contacts fixedly on the main insulation pipe 1, bayonet lock 5 is installed on main insulation axle 12 at last what C got along.
The 3rd step: the installation of moving contact group, get three groups of moving contact groups, look into the hole and decide the sets of contacts reserved empty position by the sight of main insulation pipe 1, be respectively charged in the three-flute of main insulation axle 12 correspondences, utilize screw 14 fastening then.
The 4th step: the sets of contacts of deciding that the reserved empty position place is installed, earlier block bayonet lock 5 with transmission mechanism, rotation main insulation axle 12, the three-phase moving contact group is transformed on other station, to decide the diameters that contact 8 directly inserts upper supporting plates 6, lower carrier plate 10 again is in the 28mm hole, utilizes plug screw 7, connector lug 11 fastening then.
The 5th step: check debugging.The voltage-regulation principle of switch is seen Fig. 7.Change the service position of moving contact group by the main shaft of transmission mechanism rotary switch body, since moving contact with decide contacting of contact different station, make adjacent two to decide the contact short circuit, thereby change and decide the transformer coil number that contact links to each other, finally reach adjustment voltage purpose.
Claims (4)
1, a kind of off circuit tap changer, by the main insulation body, decide sets of contacts, moving contact group three parts are formed, it is characterized in that: the main insulation body is made up of main insulation pipe (1), main insulation axle (12), fixed insulation pipe (2) and supports insulative pipe (20), connects in aggregates by bolt (3), nut (4); Decide sets of contacts by upper supporting plate (6), plug screw (7), decide contact (8,9), lower carrier plate (10) is formed, will decide contact (8,9) by plug screw (7) and connector lug (11) and be fixed on upper supporting plate (6), lower carrier plate (10) and go up to form and decide sets of contacts; The moving contact group is made up of supporter (15), spring (16), fairlead (17), moving contact (18), bearing pin (19), spring (16) is packed in the hole of supporter (15), spring (16) is with fairlead (17), moving contact (18) is arranged in the groove of supporter (15), passes moving contact (18) and supporter (15) hole between the two fixes by bearing pin (19); Decide sets of contacts by the fixed insulation pipe (2) of main insulation body and three teeth and the upper supporting plate (6) of deciding sets of contacts, lower carrier plate (10) three-flute coupling of supports insulative pipe (20), be fixed on main insulation pipe (1) by bolt (3), nut (4) and go up formation one integral body; The moving contact group is fixed on the main insulation axle (12) by screw (14), and corresponding with three groups of moving contact group positions.
2, right 1 described off circuit tap changer as requested, it is characterized in that: described main insulation axle (12) axle center and main insulation pipe (1), to decide sets of contacts concentric, and external diameter and the centre bore of deciding upper supporting plate in the sets of contacts (6), lower carrier plate (10) are movingly and concentric with it rotation.
3, right 1 described off circuit tap changer as requested is characterized in that: describedly decide contact (8,9) for cylindrical, and two ends are designed to oblate.
4, right 1 described off circuit tap changer as requested is characterized in that: described moving contact (18) is for semicircle, and the centre has mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520095801 CN2791844Y (en) | 2005-04-05 | 2005-04-05 | Excitation-free tap changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520095801 CN2791844Y (en) | 2005-04-05 | 2005-04-05 | Excitation-free tap changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2791844Y true CN2791844Y (en) | 2006-06-28 |
Family
ID=36807899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520095801 Expired - Fee Related CN2791844Y (en) | 2005-04-05 | 2005-04-05 | Excitation-free tap changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2791844Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964269A (en) * | 2010-11-01 | 2011-02-02 | 株洲南车时代电气股份有限公司 | Conversion-drum three-position isolating mode and isolating switch |
| CN101807474B (en) * | 2008-08-14 | 2013-07-17 | 库帕技术公司 | Tap changer switch |
| CN110211823A (en) * | 2019-06-12 | 2019-09-06 | 西安西变组件有限公司 | Tap switch and temperature rise experimental provision |
-
2005
- 2005-04-05 CN CN 200520095801 patent/CN2791844Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807474B (en) * | 2008-08-14 | 2013-07-17 | 库帕技术公司 | Tap changer switch |
| CN101964269A (en) * | 2010-11-01 | 2011-02-02 | 株洲南车时代电气股份有限公司 | Conversion-drum three-position isolating mode and isolating switch |
| CN101964269B (en) * | 2010-11-01 | 2013-03-06 | 株洲南车时代电气股份有限公司 | Conversion-drum three-position isolating mode and isolating switch |
| CN110211823A (en) * | 2019-06-12 | 2019-09-06 | 西安西变组件有限公司 | Tap switch and temperature rise experimental provision |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WUHAN CHANGHONG HENGTONG HIGH PRESSURE EQUIPMENT C Free format text: FORMER OWNER: HE YOULIN Effective date: 20090911 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090911 Address after: No. 2 Ming Ming community, Jiangxia District, Hubei, Wuhan Province: 430200 Patentee after: Wuhan Changhong Hengtong High Pressure Equipment Co., Ltd. Address before: No. 2 Ming Ming community, Jiangxia District, Hubei, Wuhan Province: 430200 Patentee before: He Youlin |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060628 Termination date: 20120405 |