CN103311011A - A tap selector and a method for assembling a tap selector - Google Patents
A tap selector and a method for assembling a tap selector Download PDFInfo
- Publication number
- CN103311011A CN103311011A CN2013100731746A CN201310073174A CN103311011A CN 103311011 A CN103311011 A CN 103311011A CN 2013100731746 A CN2013100731746 A CN 2013100731746A CN 201310073174 A CN201310073174 A CN 201310073174A CN 103311011 A CN103311011 A CN 103311011A
- Authority
- CN
- China
- Prior art keywords
- current collector
- capability
- tap selector
- tap
- interior section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000004020 conductor Substances 0.000 claims abstract description 14
- 238000009413 insulation Methods 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000004804 winding Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H9/0016—Contact arrangements for tap changers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
- H01H11/06—Fixing of contacts to carrier ; Fixing of contacts to insulating carrier
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Breakers (AREA)
Abstract
The invention relates to a tap selector for a tap changer. The tap selector includes a plurality of moving contacts (31). Each moving contact (31) is electrically connected to a respective current collector arm (32) and each current collector arm (32) is electrically connected to a conductor for electrical connection with a diverter switch. According to the invention each of at least some of the current collector arms (32) is assembled from two separate parts (32a, 32b) joined together. One of these is an inner part (32a) that is electrically connected to a respective moving contact (31). The other one is an outer part (32b) that is electrically connected to the conductor. The invention also relates to a method for assembling such a tap selector.
Description
Technical field
The present invention relates to capability of tap selector for tap changer in first aspect, wherein this capability of tap selector comprises a plurality of current collectors, each current collector is electrically connected to current collector arm separately, and each current collector arm is electrically connected to the conductor that is electrically connected for change over switch.
In second aspect, the present invention relates to a kind ofly be used for the method for the capability of tap selector of tap changer for assembling, this method comprises to bar provides a plurality of fixed contacts.
Background technology
Tap changer is generally used for being connected in order to change its interconversion rate with transformer.In having the transformer of tap changer, a winding in the transformer has the number of turn that is connected to circuit of fixed qty.Another winding has a fixed connection point, and can select another tie point among some current collectors, to obtain required voltage.Selectable current collector can be along being positioned at back each other with 70% to the 100% corresponding part of extending fully of winding.
After the load that is connected to transformer changes or owing to other influences, may need to change tie point.Usually in response to parameter sensing, automatically trigger the demand of the change of tapping point.Tap changes and to comprise that a plurality of operations, this operation for example comprise via spring and load accumulator disconnection and Closing Switch and accurate selector arm is moved to new fixed contact.Must carry out these operations according to specific order and according to the special time relation.
Tap changes operation and comprises that the connection from a tie point to adjacent tie point changes.This is by be used for setting up with the accurate selector arm execution that contacts of separately current collector.
The illustrative example of capability of tap selector is for example disclosed in US3652812, US5374781, EP325139, DE3936420, JP63148607 and CN101572174.
When making that movable contact contacts with one of them current collector, thereby set up a kind of like this circuit, wherein tap is connected to change over switch via this movable contact and fixed contact in this circuit.By the connection of the current collector arm foundation relevant with the fixed contact of discussing from current collector.The conductor that shares via whole current collector arms is connected to change over switch with each current collector arm.
The needed length of current collector arm may be caused various problems when the assembling capability of tap selector.
One of them this problem is that the capability of tap selector of the type typically has for the insulative cylinders body that surrounds the fixed contact set, thereby the conductor that the current collector arm is connected to is positioned at this insulative cylinders external body.The current collector arm therefore must this cylinder of extend past.Thereby because the length of the current collector arm that needs, so for the assembling capability of tap selector, be problematic.The current collector arm that is attached to current collector hinders a kind of like this insertion of assembly, and wherein, this current collector is installed in the screen at this assembly.Can avoid this problem by the cylindrical wall with segmentation, but this becomes for many application mechanical strength too a little less than.
Summary of the invention
The objective of the invention is to overcome the above-mentioned shortcoming relevant with the assembling of capability of tap selector.
This purpose is implemented in the capability of tap selector of the sort of type of describing in the introduction according to specification, comprise concrete feature: from two independent sectors that are bonded together, namely be electrically connected to the interior section and the exterior section that is connected to this conductor of current collector separately, assemble each the current collector arm at least some these current collector arms.
Because the current collector arm is by two independent parts manufacturings, so the unit with current collector may be inserted on every side in the insulative cylinders body, wherein only the interior section of each current collector arm attaches to this current collector.Thereby can be so that assembling be more much easier.After these were inserted into the insulative cylinders body, the exterior section of current collector arm separately can be attached to interior section.
In order to help assembling, it is just enough only some current collector arms to be divided into two parts in principle.But in most of situation, preferred all current collector arms have the type, because this helps realize simple assembling to the full extent.This also has the advantage that structure will be more single.
According to a preferred implementation, this capability of tap selector comprises bar, wherein be installed to each this current collector on this bar and cylindrical insulation wall around this bar, this cylindrical insulation wall has a plurality of openings, wherein current collector arm separately extends through this opening.
In order to have the fixed contact that is configured on this bar, the layout that this is normally favourable, the compact structure that this causes providing the logic configuration of current collector and allows reasonable manufacturing.Because as mentioned above, in assembling one of more pertinent problem be when capability of tap selector be when having that type capability of tap selector of cylindrical insulation wall, interested in especially application of the present invention when insulation wall occurring.
According to another preferred implementation, the major part at least of this interior section is positioned on the inside of this cylindrical insulation wall and the major part at least of this exterior section is positioned on the outside of this insulation wall.
When solving the relevant packing problem of appearance with insulation wall, the relative position of part separately and extend and further help simplification and assemble.
According to another preferred implementation, the length of this interior section is greater than the length of this exterior section.
This feasible easier this part that depends on each other.
According to another preferred implementation, at least one interior section and exterior section have the shielding projection.
Shielding projection on any one or two part makes it possible to operate on the higher voltage and can not produce disturbing effect to the current collector arm.Preferably there is this shielding projection in each part.This is conducive to this shielding projection configuration as the annulus around various piece, in order to provide shielding in whole directions vertical with the current collector arm.Preferably should shield projection and various piece is manufactured in the object in order to help manufacturing.
According to another preferred implementation, each shielding projection is placed near shielding wall.
Thereby in obtaining the most important zone of shielding, provide shielding.
According to another preferred implementation, by screw means this interior section and this exterior section are bonded together.
Therefore if realize the simple and safe joint of this part and the demand of removing takes place then can easily discharge this joint.
According to another preferred implementation, this screw means comprises at least one screw, each screw have mainly this current collector arm vertically in the direction of extending, and each screw is through the insertion of the hole in this exterior section and extend into screwed hole in this interior section.
Thereby with screw this part to be tightened in will be easy especially together.Preferably use two screws.The screw of the type engages also has the advantage that does not need to rotate relative to each other this part when engaging this part.Thereby will limit the angle direction of this exterior section well, this is conducive to this exterior section to the connection of the conductor of guiding change over switch.
According to another preferred implementation, this screw means comprises two screws, and these two screws are oriented and make this screw converge towards the direction of this interior section from this exterior section.
The configuration of the inclination of this screw allows to have between the screw terminal at the place, outer end of this exterior section enough greatly to be used for twisting easily the distance of this screw, thereby this interior section can relative thin and size need not thicker, only to be used for providing corresponding distance at the place, end of screw.
The invention still further relates to a kind of tap changer, this tap changer comprises according to of the present invention, particularly, and according to the capability of tap selector of any one preferred implementation of the present invention.
In addition, the present invention relates to possess transformer according to tap changer of the present invention.
According to a second aspect of the invention, purpose of the present invention is implemented in the sort of method described in the introduction of specification and comprises concrete steps:
-interior section of current collector arm is attached to each current collector;
-the insulative cylinders body is provided;
-a plurality of the openings of manufacturing in this insulative cylinders body;
-this bar axially is inserted into the inside of this insulative cylinders body;
This bar of-location, thereby each described interior section and a described register;
Each described opening of-process inserts the exterior section of described current collector arm; And
-each described interior section is connected to separately a described exterior section.
According to preferred implementation, utilize the assembly with capability of tap selector of the present invention, with any of preferred implementation of the present invention, corresponding assembly is carried out this method particularly.
Tap changer of the present invention, transformer of the present invention and method of the present invention have the advantage identical with the advantage of capability of tap selector of the present invention and its preferred implementation, have wherein above described the advantage of tap changer of the present invention and its preferred implementation.
Specified above-mentioned preferred implementation of the present invention in the dependent claims.To be appreciated that any possible combination by above-mentioned preferred implementation and any possible combination by the feature described in the description of these execution modes and hereinafter example can constitute further preferred embodiment certainly.
With the following detailed description by an example of the present invention and come further to explain the present invention with reference to the accompanying drawings.
Description of drawings
Fig. 1 a-1c schematically illustrates the tap changer that capability of tap selector of the present invention is applicable to.
Fig. 2 is the end view according to the part of capability of tap selector of the present invention.
Fig. 3 is the part cross-sectional side view according to current collector arm of the present invention.
Fig. 4 is the end view of the current collector arm of Fig. 3.
Fig. 5 is the vertical view of the current collector arm of Fig. 3.
Embodiment
Fig. 1 a-1c schematically illustrates tap changer.Fig. 1 a is the single-phase figure of a kind of like this tap changer 100 of being applicable to of equipment according to the present invention.Tap changer 100 is connected to the adjusting winding of transformer and has one group of different tap 102, and in this case, the quantity of tap is 16, but this quantity can be some other quantity from 5 to 35 any amount for example.The tap changer of Fig. 1 a be the change over switch type and comprise change over switch 120 and capability of tap selector 110.
The capability of tap selector 110 of Fig. 1 utilizes to be selected to operate with accurate the selection in advance, and therefore comprises selector arm 51 and accurate selector arm 101 in advance.The selector arm in advance 51 and the accurate selector arm 101 that move to operate by the rotation separately shown in Fig. 1 b and the 1c.Selector arm 51 can move between two fixed contacts in advance, and can be so that any contact of accurate selector arm 101 and 5 to 9 different contacts.Therefore nearly 35 different taps of expression of the integrated positioning of selector arm 51 and accurate selector arm 101 in advance.
Fig. 2 is the end view according to the part of capability of tap selector of the present invention.Center rod 30 possesses a plurality of current collectors 31.Can be so that (not showing) fixed contact contacts with a selected current collector in this current collector 31.Current collector arm 32 is fixedly connected to each current collector 31.The outer end of each current collector arm 32 is configured to be fixedly joined to the conductor (not shown) of guiding change over switch.
With one heart around bar 30, wherein only shown the part of this insulative cylinders body by insulative cylinders body 33 in the figure.Separately opening 36 in each current collector arm 32 extend past insulative cylinders body 33.Current collector arm 32 can be the solid metal rod for example copper or brass etc.
By two independent sectors that are bonded together, interior section 32a and exterior section 32b constitute current collector arm 32.Interior section 32a radially extends outwardly into apart from the distance of insulative cylinders body 33 weak points from current collector.Exterior section 32b extends from the outer end of its be connected to conductor and runs into just till the interior section 32a of insulative cylinders body 33 inside up to it through the opening 36 the insulative cylinders body 33.
Fig. 3 illustrates current collector arm 32 in more detail in the part cross section.Its two parts are met each other at outer end face 43 places of the interior section 32a that just is positioned at insulative cylinders body 33 inside.By a pair of screw 39 these two parts are bonded together.Non-threaded hole 38 among each screw 39 extend past exterior section 32b and enter screwed hole 37 among the interior section 32a.This screw mainly extends in the longitudinal direction of current collector arm 32, but converges slightly each other in inside direction.Be provided for the recess 41 of screw cap 40.Be provided for the hole 42 of connection of the conductor of change over switch.
In Fig. 4, show the end view of current collector arm 32 and in Fig. 5, shown the vertical view of current collector arm 32.By these features, can see the shape of the outer end of exterior section 32b, wherein, the flat surfaces 44 in vertical plane is configured in each side to be used for the installation to the conductor of going to change over switch.
In the time will assembling capability of tap selector, bar 30 axially is inserted in the cylinder insulation wall 33, and its king-rod 30 has the interior section 32a that is connected to each current collector 31 in this current collector 31 of current collector 31 and current collector arm 32.This can accomplish under the help of gravity easily.Bar 30 is oriented and makes each interior section 32a become to align with separately opening 36 in the cylinder insulation wall 33 then.After this, insert exterior section 32b through each opening 36, thereby exterior section 32b becomes and contacts with separately interior section 32a and with the hole 37,38 that is in alignment with each other.
In each exterior section 32b, the hole by in them 38 is inserted screws 39 and further is inserted in the screwed hole 37 of interior section 32a of alignment then.By tighten the screws nail 39 that two parts are fixed to one another then.After assembling, the installing hole 42 by on the flat surfaces 44 on the very outer end of part 32b externally can be connected to the conductor of going to change over switch with the exterior section 32b of each current collector arm 32.
Claims (13)
1. capability of tap selector that is used for tap changer, wherein said capability of tap selector comprises a plurality of current collectors (31), each current collector (31) is electrically connected to current collector arm (32) separately, each current collector arm (32) is electrically connected to the conductor that is electrically connected for change over switch, it is characterized in that, from two independent sector (32a that are bonded together, 32b), namely be electrically connected to the interior section (32a) of described current collector (31) separately and be connected to the exterior section (32b) of described conductor, assemble each the current collector arm (32) at least some described current collector arms (32).
2. capability of tap selector according to claim 1, it is characterized in that, described capability of tap selector comprises bar (30), wherein each described current collector (31) is installed on the described bar (30), with the cylinder insulation wall (33) around described bar (30), described cylinder insulation wall (33) has a plurality of openings (36), and wherein current collector arm (32) separately extends through described opening (36).
3. capability of tap selector according to claim 2, it is characterized in that the major part at least of described interior section (32a) is positioned on the inside of described cylinder insulation wall (33) and the major part at least of described exterior section (32b) is positioned on the outside of described insulation wall (33).
4. according to any described capability of tap selector among the claim 1-3, it is characterized in that described interior section (32a) has the length greater than the length of described exterior section (32b).
5. according to any described capability of tap selector among the claim 1-4, it is characterized in that at least one in described interior section (32a) and the described exterior section (32b) has shielding projection (34,35).
6. capability of tap selector according to claim 5 is characterized in that, each shielding projection (34,35) is placed near described insulation wall (33).
7. according to any described capability of tap selector among the claim 1-6, it is characterized in that, by screw means described interior section (32a) and described exterior section (32b) are bonded together.
8. capability of tap selector according to claim 7, it is characterized in that, described screw means comprises at least one screw (39), each screw (39) have mainly described current collector arm (32) vertically in the direction of extending, and each screw (39) passes through hole (38) in the described exterior section (32b) and inserts and extend into screwed hole (37) in the described interior section (32a).
9. capability of tap selector according to claim 8, it is characterized in that, described screw means comprises two screws (39), and described two screws (39) are oriented and make described screw (39) converge towards the direction of described interior section (32a) from described exterior section (32b).
10. a tap changer is characterized in that, described tap changer comprises according to any described capability of tap selector among the claim 1-9.
11. a transformer is characterized in that described transformer comprises tap changer according to claim 10.
12. one kind is used for the method that assembling is used for the capability of tap selector of tap changer, described method comprises the step that the bar (30) with a plurality of mobile contacts (31) is provided, and it is characterized in that described method is further comprising the steps of:
-interior section (32a) of current collector arm (32) is attached to each current collector (31);
-insulative cylinders body (33) is provided;
-manufacturing a plurality of openings (36) in described insulative cylinders body (33);
-described bar (30) axially is inserted into the inside of described insulative cylinders body (33);
-locate described bar (30), make that in each described interior section (32a) and the described opening (36) aligns;
Each described opening (36) of-process inserts the exterior section (32b) of described current collector arm (32); And
-each described interior section (32a) is connected to separately a described exterior section (32b).
13. method according to claim 12 is characterized in that, utilizes and carries out described method according to the corresponding assembly of any described assembly among the claim 1-9.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20120158342 EP2637186B1 (en) | 2012-03-07 | 2012-03-07 | A tap selector and a method for assembling a tap selector |
| EP12158342.1 | 2012-03-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103311011A true CN103311011A (en) | 2013-09-18 |
| CN103311011B CN103311011B (en) | 2016-11-16 |
Family
ID=45841271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310073174.6A Active CN103311011B (en) | 2012-03-07 | 2013-03-06 | Capability of tap selector and the method being used for assembling capability of tap selector |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP2637186B1 (en) |
| CN (1) | CN103311011B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105321741A (en) * | 2014-08-01 | 2016-02-10 | Abb技术有限公司 | On-load tap-changer for dry transformers and dry transformer |
| CN106463287A (en) * | 2014-03-31 | 2017-02-22 | Abb瑞士股份有限公司 | Dry transformer load switch |
| CN114072891A (en) * | 2019-07-01 | 2022-02-18 | 日立能源瑞士股份公司 | Tap changer barrier in a power transformer |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2985773A1 (en) * | 2014-08-13 | 2016-02-17 | ABB Technology AG | On-load tap-changer for dry transformers and dry transformer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3652812A (en) * | 1970-09-28 | 1972-03-28 | Westinghouse Electric Corp | Tap changer switch with radial pressurized movable contact structure |
| JPS63148607A (en) * | 1986-12-12 | 1988-06-21 | Hitachi Ltd | Tap changer for transformer |
| DE3936420A1 (en) * | 1989-11-02 | 1991-05-08 | Reinhausen Maschf Scheubeck | Screened contact for transformer tap switch - has screen held on shaft by recessed spring plate, insertable over contact end |
| EP0543120A2 (en) * | 1991-11-19 | 1993-05-26 | Maschinenfabrik Reinhausen Gmbh | Contact assembly. |
| CN201167022Y (en) * | 2008-02-26 | 2008-12-17 | 上海华明电力设备制造有限公司 | Unloading type structure for cage body lath of an excition-free tap switch |
| CN101572174A (en) * | 2009-03-06 | 2009-11-04 | 武汉泰普变压器开关有限公司 | Unloading off-circuit tapping switch |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3801152A1 (en) * | 1988-01-16 | 1989-07-27 | Reinhausen Maschf Scheubeck | CONTACT ARRANGEMENT SITTING IN AN INSULATING WALL FOR STEPPERS OF STEPPING TRANSFORMERS |
-
2012
- 2012-03-07 EP EP20120158342 patent/EP2637186B1/en active Active
-
2013
- 2013-03-06 CN CN201310073174.6A patent/CN103311011B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3652812A (en) * | 1970-09-28 | 1972-03-28 | Westinghouse Electric Corp | Tap changer switch with radial pressurized movable contact structure |
| JPS63148607A (en) * | 1986-12-12 | 1988-06-21 | Hitachi Ltd | Tap changer for transformer |
| DE3936420A1 (en) * | 1989-11-02 | 1991-05-08 | Reinhausen Maschf Scheubeck | Screened contact for transformer tap switch - has screen held on shaft by recessed spring plate, insertable over contact end |
| EP0543120A2 (en) * | 1991-11-19 | 1993-05-26 | Maschinenfabrik Reinhausen Gmbh | Contact assembly. |
| CN201167022Y (en) * | 2008-02-26 | 2008-12-17 | 上海华明电力设备制造有限公司 | Unloading type structure for cage body lath of an excition-free tap switch |
| CN101572174A (en) * | 2009-03-06 | 2009-11-04 | 武汉泰普变压器开关有限公司 | Unloading off-circuit tapping switch |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106463287A (en) * | 2014-03-31 | 2017-02-22 | Abb瑞士股份有限公司 | Dry transformer load switch |
| CN106463287B (en) * | 2014-03-31 | 2018-12-07 | Abb瑞士股份有限公司 | Dry-type transformer load switch |
| CN105321741A (en) * | 2014-08-01 | 2016-02-10 | Abb技术有限公司 | On-load tap-changer for dry transformers and dry transformer |
| CN114072891A (en) * | 2019-07-01 | 2022-02-18 | 日立能源瑞士股份公司 | Tap changer barrier in a power transformer |
| CN114072891B (en) * | 2019-07-01 | 2024-02-27 | 日立能源有限公司 | Tap changer barrier in a power transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2637186B1 (en) | 2014-09-17 |
| EP2637186A1 (en) | 2013-09-11 |
| CN103311011B (en) | 2016-11-16 |
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