CN204029591U - A kind of on-load voltage regulation capacity transfer shunting switch - Google Patents
A kind of on-load voltage regulation capacity transfer shunting switch Download PDFInfo
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- CN204029591U CN204029591U CN201420373796.0U CN201420373796U CN204029591U CN 204029591 U CN204029591 U CN 204029591U CN 201420373796 U CN201420373796 U CN 201420373796U CN 204029591 U CN204029591 U CN 204029591U
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- static contact
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Abstract
A kind of on-load voltage regulation capacity transfer shunting switch, comprise three cover operating mechanisms, three capacitance switchs and two tap changers, operating mechanism respectively has a set of bistable permanent magnetic assembly and poke rod thereof, switch respectively comprises an insulating cylinder in sealed vacuum shape, and the diverter surface of movable contact spring and static contact is all positioned at the vacuum cylinder chamber of insulating cylinder; The diverter surface width of three capacitance switch mesohigh side static contact pieces is less than the width of low-pressure side.The utility model is positioned at vacuum cylinder chamber due to the diverter surface of active and static contact, therefore has that arc extinction performance is reliable, long service life and transformer oil can not be subject to the advantage that electric arc pollutes; Moreover, adopt first cutoff high winding, again cutoff low winding, first connect low pressure winding, after connecting the technology of high pressure winding again, achieve electric arc little, be conducive to remanent magnetism in eliminating transformer iron core, avoid shoving and overvoltage when again connecting high-pressure side winding, effectively reduce the object of handoff procedure voltage fluctuation amplitude.
Description
Technical field
The utility model relates to a kind of pressure regulating and capacitance regulating transformer part, particularly relates to a kind ofly to mate the on-load voltage regulation capacity transfer shunting switch used with pressure regulating and capacitance regulating transformer.
Background technology
Loaded capacity regulating voltage regulating shunting switch is the device that transformer carries out adjustment capacity and voltage under excitation or non-interrupt load state, is particularly useful for load variations and the larger capacity regulating voltage adjusting distribution transformer of power network fluctuation, realizes energy-saving and cost-reducing.It is placed in distribution transformer fuel tank, be immersed in transformer oil, structure comprises the pressure regulation part that the capacity transfer part be made up of some operating mechanisms and capacitance switch, some operating mechanisms and tap changer are formed, two-part operating mechanism structure is identical, and the structure of capacity transfer and tap changer is also basically identical.Every capacitance switch or tap changer comprise an insulating cylinder of being cast by epoxy resin separately, be provided with the transmission component and movable contact spring that are associated with operating mechanism, barrel is embedded with static contact in the cylinder chamber of this insulating cylinder.During operation, operating mechanism is according to the instruction of transformer automatic controller, by transmission component, movable contact spring is turned round in the cylinder chamber of insulating cylinder, to complete two switchings: one be transformer high-voltage winding triangle-star, low pressure winding also-capacity transfer of series connection mode switches, two be the high, medium and low gear of transformer high-voltage winding pressure regulation switch, realize capacity and pressure regulating object.Problem is: 1, in capacity and pressure regulating process, and active and static contact, because switching the electric arc that produces, can pollute arc-extinguishing medium transformer oil, cause transformer oil insulation property to decline rapidly, seriously jeopardize transformer useful life, and potential safety hazard is large.2, when capacity transfer switches, all contacts synchronism switching of high and low pressure group, large by low-pressure side winding big current function influence electric arc, dynamic and static contact is very easily burnt.
Summary of the invention
For solving the problems referred to above that prior art exists, the utility model aims to provide a kind of on-load voltage regulation capacity transfer shunting switch, this shunting switch active and static contact switches the electric arc produced, and can not pollute arc-extinguishing medium transformer oil, has long service life, advantage that reliability is high; Moreover switching arc is relatively little.
For achieving the above object, the utility model have employed following technical proposals:
A kind of on-load voltage regulation capacity transfer shunting switch, comprises the mounting panel be arranged in transformer oil box cavity, and is placed in the functional unit at this mounting panel top and the switch block be positioned at bottom this mounting panel; Described functional unit comprises the identical capacity transfer operating mechanism of structure, the first pressure regulation operating mechanism and the second pressure regulation operating mechanism, described switch block comprises the first roughly consistent capacitance switch of structure, the second capacitance switch and the 3rd capacitance switch, and the first tap changer and the second tap changer; Described capacity transfer operating mechanism, the first pressure regulation operating mechanism or the second pressure regulation operating mechanism have a set of bistable permanent magnetic assembly and poke rod thereof, and the upper end of described poke rod is associated with the iron core in bistable permanent magnetic assembly; Described first capacitance switch, the second capacitance switch, the 3rd capacitance switch, the first tap changer or the second tap changer, comprise an insulating cylinder, and be provided with a set of transmission component and one group of movable contact spring in the cylinder chamber of this insulating cylinder, barrel bottom is embedded with three groups of static contacts; It is characterized in that: the cylinder chamber of described insulating cylinder is sealed vacuum shape, the diverter surface of described one group of movable contact spring and three groups of static contacts is all positioned at the vacuum cylinder chamber of described insulating cylinder.
As when preferably specifically implementing, the cylindrical shell of described insulating cylinder is formed by upper shell, lower shell, upper cover plate and lower cover sealed attachment, and the lower shell that wherein upper shell made of metal material and nonmetallic materials make is screwed into one; Described three groups of static contacts are embedded on described lower shell; A vacuum exhaust pipe is provided with in described upper cover plate.
As when preferably specifically implementing, described transmission component comprises drive link, bellows, driver blade, bearing pin, drive plate, steady pin and Compress Spring thereof; Bellows-sheathed is located on the shaft of drive link, its inner port and shaft sealed attachment, the wall sealed attachment of external port and described cylindrical shell; Outer end and the described poke rod of described drive link are connected, and the inner of drive link is hinged through bearing pin and driver blade, and this driver blade is fixed on the central shaft upper end of drive plate; Suitable with three groups of static contacts, three movable contact springs are radially positioned in described drive plate periphery through steady pin and Compress Spring thereof.
As when preferably specifically implementing, three groups of static contacts of described first capacitance switch, the second capacitance switch and the 3rd capacitance switch are respectively high-pressure side static contact group, the first low-pressure side static contact group and the second low-pressure side static contact group; Each group is made up of four static contacts respectively, their circumferences cast on lower shell, wherein: in the first low-pressure side static contact group and the second low-pressure side static contact group, the sheet body width of all static contacts is consistent, spacing distance between sheet with sheet is consistent, and in the static contact group of high-pressure side, the sheet body width of four static contacts is less than the sheet body width of the static contact in two low-pressure side static contact groups.
As when preferably specifically implementing, three groups of static contacts in described first tap changer or the second tap changer are high-pressure side static contact group, each group is made up of four static contacts respectively, their circumferences cast on lower shell, and the sheet body width of all static contacts, and spacing distance between sheet with sheet is consistent.
Compared with prior art, the utility model has following innovation and advantage
One, after making the insulating cylinder of three capacitance switchs and two tap changers into sealed vacuum structure, the diverter surface of movable contact spring and static contact is made to be in a chamber, changing arc-extinguishing medium transformer oil is vacuum medium, therefore, have that arc extinction performance is reliable, long service life and transformer oil can not be subject to the plurality of advantages that electric arc pollutes.
Two, utilize that the sheet of four static contacts in the static contact group of high-pressure side is wide, spacing distance difference between sheet and sheet, make three capacitance switchs in handoff procedure, achieve first cutoff high winding, again cutoff low winding, or first connect low pressure winding, then connect the object of high pressure winding.Its advantage is: first disconnected high-pressure side winding, because high voltage side current is less, the electric arc produced is also just less, not only easily broken, and after the disconnection of high-pressure side winding, low-pressure side winding just loses electric current, therefore, can avoid switching low-pressure side winding under big current situation and the phenomenon of burning the dynamic and static contact of low pressure, thus effectively extend switch electric life.In like manner, first connect low-pressure side winding, then connect high-pressure side winding, the dynamic and static contact of energy available protecting, extends switch electric life.This process is conducive to remanent magnetism in eliminating transformer iron core simultaneously, avoids shoving and overvoltage when again connecting high-pressure side winding, effectively reduces handoff procedure voltage fluctuation amplitude.
Three, after vacuum insulation cylinder cylindrical shell adopts metal upper shell and nonmetal lower shell structure, before not affecting static contact and arranging under topic, solve vacuum insulation cylinder when all adopting insulating material to make, the volume of existence be large, cast time easily produce the problem that stress and cylindrical shell easily crack.
For deepening understanding of the present utility model, be described in further detail by embodiment below in conjunction with accompanying drawing.
Accompanying drawing explanation
Fig. 1 is the perspective view of the utility model embodiment.
Fig. 2 is the perspective view of a capacitance switch in Fig. 1, does not draw upper cover plate structure in figure.
Fig. 3 is the structural representation after Fig. 2 longitudinally cutting.
Fig. 4 be Fig. 2 look up structural representation.
Fig. 5 is the plan structure schematic diagram of Fig. 2.
In figure: mounting panel 1, the first pressure regulation operating mechanism 2, second pressure regulation operating mechanism 3, static contact 4, diverter surface 41, holder 5, capacity transfer operating mechanism 6, poke rod 7, cylindrical shell 8, upper cover plate 81, lower cover 82, upper shell 83, installing hole 831, screw thread 832, lower shell 84, drive link 9, bellows 91, driver blade 92, bearing pin 93, drive plate 94, steady pin and Compress Spring 95, vacuum exhaust pipe 96, sealing ring 97, movable contact spring 10, high-pressure side static contact group Z, first low-pressure side static contact group X, the second low-pressure side static contact group Y.
Embodiment
See Fig. 1.Mounting panel 1 is horizontal is fixedly mounted on transformer inner chamber top, its end face is used for fixing operation parts, that is: capacity transfer operating mechanism 6, first pressure regulation operating mechanism 2 and the second pressure regulation operating mechanism 3, the composition structure of these three mechanisms is identical, has a set of independently bistable permanent magnetic assembly and poke rod 7 thereof respectively.Automatic controller output on coil connection transformer in bistable permanent magnetic assembly, the upper end of poke rod 7 and the iron core of coil are connected, and are limited by iron core, and shaft passes mounting panel 1 to downward-extension.The bottom surface of mounting panel 1 is used for floatless switch parts, that is: the first capacitance switch, the second capacitance switch and the 3rd capacitance switch, and first tap changer and the second tap changer, the structure of these five switches is roughly consistent, as seen from Figure 1, they comprise a set of transmission component in a vacuum insulation cylinder and cylinder chamber thereof and one group of movable contact spring separately.The cylindrical shell 8 of vacuum insulation cylinder is fixed on mounting panel 1 through holder 5, the bottom of cylindrical shell 8, and circumference is cast three groups of static contacts 4.In this example, three drive links 9 of a poke rod 7 of capacity transfer operating mechanism 6 and the first capacitance switch, the second capacitance switch or the 3rd capacitance switch form a link gear, realize switching static contact object.First pressure regulation operating mechanism 2 and the second pressure regulation operating mechanism 3 corresponding first tap changer and the second tap changer respectively, that is: a tap changer is responsible for by each operating mechanism.
See Fig. 3, and composition graphs 2, Fig. 4 and Fig. 5.Described transmission component comprises drive link 9, bellows 91, driver blade 92, bearing pin 93, drive plate 94, steady pin and Compress Spring 95, sealing ring 97 and movable contact spring 10.Bellows 91 is set on the shaft of drive link 9, the shaft seal welding of its inner port and drive link 9, the wall seal welding of external port and cylindrical shell 8, and bellows 91 can axial shrinkage and stretching, guarantees sealing during drive link 9 displacement.After poke rod 7 extends, be connected with the outer end of the drive link 9 of cylindrical shell 8 side, the other end sealed type of drive link 9 enters cylindrical shell 8, and the driver blade 92 in bearing pin 93 with transmission component is hinged.Driver blade 92 is fixed on the central shaft upper end of drive plate 94.Suitable with three groups of static contacts, three movable contact springs 10 form one group of overall turn, are radially positioned in the periphery of drive plate 94 through steady pin and Compress Spring 95 thereof, touch respectively close with corresponding static contact group.During operation, poke rod 7 makes the clockwise or counterclockwise rotation of drive plate 94 through drive link 9, driver blade 92, central shaft, completes the switching of contact.
The structure of cylindrical shell 8 has two schemes available: one is the overall structure that cylindrical shell 8 all adopts insulating material casting, two is the Split type structures adopted as shown in Figure 3, that is: this cylindrical shell 8 is made up of upper shell 83 and lower shell 84 two parts, then screws through internal and external threads 832 sealing and connects into entirety.When the latter makes, upper shell 83 can adopt metal material, has that the thin intensity of wall is high, take up room the plurality of advantages such as little.During assembling, for realizing the vacuum seal of insulating cylinder, after transmission component and movable contact spring 10 load cylindrical shell 8, cover upper cover plate 81 and lower cover 82, along cover plate surrounding, gap sealing is good with fluid sealant.In upper cover plate 81, implant an A'Book wall steel pipe, that is: vacuum exhaust pipe 96, extracts chamber air out with vacuum pump, after vacuum degree to set point, with instrument book wall steel pipe folder flat and melting welding sealing.
Cylindrical shell 8 adopts integral type or split type, distinguishes to some extent the sealing fixed solution of bellows 91 outer end.During integral type, owing to adopting insulating material casting to form, therefore, the bore of receiving drive link 9 should arrange a metal insert, for bellows 91 seal welding.Time split type, can directly by the outer end seal welding of bellows 91 in bore opening's edge.
See Fig. 2 and Fig. 4, and composition graphs 3 and Fig. 5.
Capacity transfer structure.In the first capacitance switch, the second capacitance switch or the 3rd capacitance switch, three groups of static contacts of every capacitance switch are respectively the first low-pressure side static contact group X, second low-pressure side static contact group Y and high-pressure side below static contact group Z(is respectively referred to as X group, Y group and Z group), often organize corresponding contact and be respectively X1, X2, X3, X4, Y1, Y2, Y3, Y4 and Z1, Z2, Z3, Z4 be totally 12 contacts.Their circumferences cast in the bottom of lower shell 84, often organize contact separation certain interval.Exposed outside cylindrical shell 8 for a slice static contact 4,12 contacts, diverter surface 41 is all positioned at vacuum cylinder chamber.The innovation of capacitance switch switching construction is: in X group and Y group, the sheet body width (i.e. the width of diverter surface 41) of eight static contacts 4 is consistent, and the spacing distance between sheet with sheet is also consistent; In Z group, the sheet body width of four static contacts 4 is then less than the sheet body width of the static contact 4 in X group and Y group.This structure brings following result: because the stationary contact blade of Z group and X group and Y group is wide, sheet spacing there are differences, make three movable contact springs 10 synchronous switching should occur the time difference: Z group is first broken, break after X group and Y group, or, X group and Y group are first led to, logical after Z group.The effect brought is: because high-pressure side Z group is first broken, the little electric arc of electric current is corresponding also just less, not only easily broken, and after the disconnection of Z group, X group and Y group just lose electric current, therefore, avoid and under big current situation, switch low-pressure side winding and the phenomenon of burning dynamic and static contact, switch long service life, reliability is high.In like manner, low-pressure side winding X group and Y group are first led to, logical after the winding Z group of high-pressure side, can the dynamic and static contact of available protecting.Meanwhile, this process is conducive to remanent magnetism in eliminating transformer iron core, avoids shoving and overvoltage when again connecting high-pressure side winding, effectively reduces handoff procedure voltage fluctuation amplitude.
Pressure adjusting structure.Three groups of static contacts in first tap changer or the second tap changer are high-pressure side static contact group, each group is made up of four static contacts respectively, their circumferences cast on lower shell, and the sheet body width of all static contacts, and spacing between sheet with sheet is consistent.
During work, the output loop of automatic controller Executive Module is connected with the coil of the bistable permanent magnetic assembly in the second pressure regulation operating mechanism 3 with capacity transfer operating mechanism 6, first pressure regulation operating mechanism 2 respectively, when corresponding output loop triggers, according to the corresponding output loop of pre-conditioned triggering Executive Module, thus control corresponding operating mechanism action, gone to control capacitance switch or tap changer action by corresponding poke rod 7 again, and then complete the switching of active and static contact, realize capacity and pressure regulating object.
Above-described embodiment only for explaining the present utility model thinking, and should not be considered as the restriction to the utility model protection range, any simple variant structure done by embodiment, all should include the protection range of the application in.
Claims (5)
1. an on-load voltage regulation capacity transfer shunting switch, comprises the mounting panel (1) be arranged in transformer oil box cavity, and is placed in the functional unit at this mounting panel (1) top and is positioned at the switch block of this mounting panel (1) bottom; Described functional unit comprises the identical capacity transfer operating mechanism (6) of structure, the first pressure regulation operating mechanism (2) and the second pressure regulation operating mechanism (3), described switch block comprises the first roughly consistent capacitance switch of structure, the second capacitance switch and the 3rd capacitance switch, and the first tap changer, the second tap changer; Described capacity transfer operating mechanism (6), the first pressure regulation operating mechanism (2) or the second pressure regulation operating mechanism (3) have a set of bistable permanent magnetic assembly and poke rod (7) thereof, and the upper end of described poke rod (7) is associated with the iron core in bistable permanent magnetic assembly; Described first capacitance switch, the second capacitance switch, the 3rd capacitance switch, the first tap changer or the second tap changer, comprise an insulating cylinder (8), be provided with a set of transmission component in the cylinder chamber of this insulating cylinder and one group of movable contact spring (10), barrel bottom are embedded with three groups of static contacts; It is characterized in that: the cylinder chamber of described insulating cylinder is sealed vacuum shape, the diverter surface (41) of described one group of movable contact spring (10) and three groups of static contacts (4) is all positioned at the vacuum cylinder chamber of described insulating cylinder.
2. on-load voltage regulation capacity transfer shunting switch as claimed in claim 1, it is characterized in that: the cylindrical shell (8) of described insulating cylinder is formed by upper shell (83), lower shell (84), upper cover plate (81) and lower cover (82) sealed attachment, the lower shell (84) that wherein upper shell (83) made of metal material and nonmetallic materials make is screwed into one; Described three groups of static contacts are embedded on described lower shell (83); A vacuum exhaust pipe (96) is provided with in described upper cover plate (81).
3. on-load voltage regulation capacity transfer shunting switch as claimed in claim 2, is characterized in that: described transmission component comprises drive link (9), bellows (91), driver blade (92), bearing pin (93), drive plate (94), steady pin and Compress Spring (95) thereof; Bellows (91) is set on the shaft of drive link (9), its inner port and shaft sealed attachment, the wall sealed attachment of external port and described cylindrical shell (8); Outer end and the described poke rod (7) of described drive link (9) are connected, and the inner of drive link (9) is hinged through bearing pin (93) and driver blade (92), and this driver blade (92) is fixed on the central shaft upper end of drive plate (94); Suitable with three groups of static contacts, three movable contact springs (10) are radially positioned in described drive plate (94) periphery through steady pin and Compress Spring (95) thereof.
4. on-load voltage regulation capacity transfer shunting switch as claimed in claim 1, is characterized in that: three groups of static contacts of described first capacitance switch, the second capacitance switch and the 3rd capacitance switch are respectively high-pressure side static contact group (Z), the first low-pressure side static contact group (X) and the second low-pressure side static contact group (Y); Each group is made up of four static contacts (4) respectively, their circumferences cast on lower shell (82), wherein: in the first low-pressure side static contact group (X) and the second low-pressure side static contact group (Y), the sheet body width of all static contacts (4) is consistent, spacing distance between sheet with sheet is consistent, and in high-pressure side static contact group (Z), the sheet body width of four static contacts is less than the sheet body width of the static contact in two low-pressure side static contact groups.
5. on-load voltage regulation capacity transfer shunting switch as claimed in claim 1, it is characterized in that: three groups of static contacts in described first tap changer or the second tap changer are high-pressure side static contact group, each group is made up of four static contacts respectively, their circumferences cast on lower shell, and the sheet body width of all static contacts, and spacing distance between sheet with sheet is consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420373796.0U CN204029591U (en) | 2014-07-08 | 2014-07-08 | A kind of on-load voltage regulation capacity transfer shunting switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420373796.0U CN204029591U (en) | 2014-07-08 | 2014-07-08 | A kind of on-load voltage regulation capacity transfer shunting switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204029591U true CN204029591U (en) | 2014-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420373796.0U Withdrawn - After Issue CN204029591U (en) | 2014-07-08 | 2014-07-08 | A kind of on-load voltage regulation capacity transfer shunting switch |
Country Status (1)
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| CN (1) | CN204029591U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104112575A (en) * | 2014-07-08 | 2014-10-22 | 纪元电气集团有限公司 | On-load voltage regulating and capacitance regulating tapping switch |
| CN107424740A (en) * | 2017-08-08 | 2017-12-01 | 芜湖市凯鑫避雷器有限责任公司 | A kind of transformer with fine setting travel mechanism |
-
2014
- 2014-07-08 CN CN201420373796.0U patent/CN204029591U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104112575A (en) * | 2014-07-08 | 2014-10-22 | 纪元电气集团有限公司 | On-load voltage regulating and capacitance regulating tapping switch |
| CN107424740A (en) * | 2017-08-08 | 2017-12-01 | 芜湖市凯鑫避雷器有限责任公司 | A kind of transformer with fine setting travel mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151222 Address after: Jiangshan City, Zhejiang province 324100 Quzhou City Road No. 198 Qing Hu Zhen Village intersection Patentee after: ZHEJIANG JIYUAN TRANSFORMER CO., LTD. Address before: 324100, Zhejiang Province, Quzhou Province, Zhejiang Province, Qing City, Qing Lake Town junction village junction No. 198 Patentee before: Jiyuan Electric Group Co., Ltd. Patentee before: Zhejiang Era High Voltage Appliance Switch Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20141217 Effective date of abandoning: 20160907 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |