EP2569785A1 - Umsteller für einen transformator - Google Patents
Umsteller für einen transformatorInfo
- Publication number
- EP2569785A1 EP2569785A1 EP11707088A EP11707088A EP2569785A1 EP 2569785 A1 EP2569785 A1 EP 2569785A1 EP 11707088 A EP11707088 A EP 11707088A EP 11707088 A EP11707088 A EP 11707088A EP 2569785 A1 EP2569785 A1 EP 2569785A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- opening
- longitudinal axis
- cooling medium
- mla
- 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.)
- Withdrawn
Links
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
- H01H1/00—Contacts
- H01H1/62—Heating or cooling of contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
-
- 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
- H01H9/52—Cooling of switch parts
- H01H2009/523—Cooling of switch parts by using heat pipes
Definitions
- the invention relates to a diverter for a transformer according to the preamble of claim 1.
- the transformation ratio in the unloaded, i. Ström- and voltage-free state by means of a diverter is changeable.
- the transformer is particularly adaptable to different loads.
- Generic diverters consist of a plurality of mutually parallel, beabs- tandeten and circularly arranged around a central longitudinal axis contact bars and a relative to the contact rods rotatable contact arrangement, which is positionable by rotating about the central longitudinal axis in a plurality of switching positions and wherein in the different switching positions in each case two contact rods via the contact arrangement conductive connected to each other.
- the contact arrangement consists for example of a plurality of contact elements which are individually spring-loaded with respect to the central longitudinal axis radially displaceable and are pressed by springs against the contact rods.
- the essential aspect of the invention is that to produce a convection cooling the contact bars are at least partially hollow and each have at least a first opening for flowing in a cooling medium and at least one second opening for the outflow of a cooling medium, wherein the first and second openings along the central longitudinal axis are arranged spaced from each other.
- the cooling medium due to convection i. flow through this interior due to a temperature gradient in the interior of the contact rod and thereby absorb heat from the inside of the contact rod and dissipate.
- the wall of the contact rod is cooled not only by the flow caused on the outside by convection, but also on the inside and thereby advantageously lowered the contact temperature.
- the insulating oil contained in the housing of the diverter forms the cooling medium, so that no further coolant is required.
- the contact rods are tubular and the first and / or second opening is formed by the open tube ends.
- the pipe end can be closed by means of a connecting line or a closing element, for example a hemispherical closing element, and the first and / or second opening can be introduced into this closing element.
- a closing element for example a hemispherical closing element
- the first and / or second opening may also be a bore, which is introduced laterally into the wall of the contact rod, so that the interior of the contact rod is opened through these openings to the outside.
- the first opening is preferably arranged below and the second opening above the contact arrangement, so that the cooling medium can flow past the place of heat generation and thereby dissipate the heat.
- the figure shows an example of a diverter according to the invention with convection cooling in a side view.
- the reference numeral 1 in the figure denotes a diverter, which is shown detached from the housing.
- the diverter 1 consists of a plurality of mutually parallel, spaced and circularly arranged about a central longitudinal axis MLA contact bars 2, which are arranged by an upper and a lower cage ring 3 fixed to each other.
- a selector shaft 4 is provided along the central longitudinal axis MLA, which is mounted rotatably about this central longitudinal axis MLA in the cage rings 3.
- a contact assembly 5 is fixed to the shift shaft 4, which projects radially from this shift shaft 4 and is designed for the conductive connection of two contact rods 2.
- the contact assembly 5 is formed by a contact plate set having a plurality of spaced apart contact elements 5.1, each contact element 5.1 individually spring-loaded at least radially relative to the shift shaft 4 is displaceable.
- the contact rods 2 are at least partially hollow with an inner space 8 and have at least a first opening 6 for flowing a cooling medium in this interior 8 of the contact rod 2 and at least a second opening 7 for discharging the cooling medium from the interior eighth of the contact rod 2 out, wherein the first and second openings 6, 7 along the central longitudinal axis MLA are arranged spaced from each other.
- the cooling medium is preferably an insulating oil with which the housing (not shown) of the diverter 1 is filled and which completely surrounds the contact rods 2.
- the contact rods 2 are tubular.
- the tube interior thus forms the interior 8, which can be traversed by the insulating oil by convection flow.
- one tube end may form the first opening 6 and the opposite tube end the second tube opening 7.
- the tube ends may be closed by hemispherical caps, so that the formation of leakage currents to minimize the electric field strength between the individual contact bars 2 is reduced.
- the first or second openings 6, 7 can then be introduced into these hemispherical caps, so that the cooling medium flows through the entire contact rod 2.
- the first and second openings are each introduced laterally into the wall 2.1 of the contact rods 2, wherein the first opening 6 lies below the contact arrangement 5 and the second opening 7 lies above the contact arrangement 5.
- the first or second opening 6, 7 may be laterally inserted into the wall 2.1 of the contact rod 2 and be provided a further opening at the free ends of the contact rod 2.
Landscapes
- Transformer Cooling (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010020138.3A DE102010020138B4 (de) | 2010-05-11 | 2010-05-11 | Umsteller für einen Transformator |
PCT/EP2011/000855 WO2011141078A1 (de) | 2010-05-11 | 2011-02-23 | Umsteller für einen transformator |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2569785A1 true EP2569785A1 (de) | 2013-03-20 |
Family
ID=43876999
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11707088A Withdrawn EP2569785A1 (de) | 2010-05-11 | 2011-02-23 | Umsteller für einen transformator |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2569785A1 (de) |
CN (1) | CN102906839A (de) |
DE (1) | DE102010020138B4 (de) |
WO (1) | WO2011141078A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2797088A1 (de) * | 2013-04-23 | 2014-10-29 | ABB Technology AG | Spule für einen Trockentransformator und Trockentransformator |
WO2015086067A1 (en) * | 2013-12-11 | 2015-06-18 | Abb Technology Ag | Vacuum circuit breaker |
DE102020122451A1 (de) * | 2020-08-27 | 2022-03-03 | Maschinenfabrik Reinhausen Gmbh | Wähler |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE373895A (de) * | 1929-10-03 | |||
US3467794A (en) * | 1968-03-25 | 1969-09-16 | Westinghouse Electric Corp | Tap changer |
US3652812A (en) * | 1970-09-28 | 1972-03-28 | Westinghouse Electric Corp | Tap changer switch with radial pressurized movable contact structure |
DE2420888C3 (de) * | 1974-04-30 | 1982-02-11 | Transformatoren Union Ag, 7000 Stuttgart | Säulenartige Schleifringanordnung für den Wähler und Anzapfumsteller von Stufenschaltern für Transformatoren |
US4496805A (en) * | 1983-09-09 | 1985-01-29 | Warco, Inc. | Transformer switch |
CN100442410C (zh) * | 2006-06-02 | 2008-12-10 | 武汉泰普变压器开关有限公司 | 一种带有屏蔽装置的无励磁分接开关 |
DE102007023124B3 (de) * | 2007-05-16 | 2008-10-02 | Maschinenfabrik Reinhausen Gmbh | Schaltanordnung |
-
2010
- 2010-05-11 DE DE102010020138.3A patent/DE102010020138B4/de not_active Expired - Fee Related
-
2011
- 2011-02-23 CN CN2011800232234A patent/CN102906839A/zh active Pending
- 2011-02-23 WO PCT/EP2011/000855 patent/WO2011141078A1/de active Application Filing
- 2011-02-23 EP EP11707088A patent/EP2569785A1/de not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2011141078A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102010020138A1 (de) | 2011-11-17 |
WO2011141078A1 (de) | 2011-11-17 |
CN102906839A (zh) | 2013-01-30 |
DE102010020138B4 (de) | 2015-08-13 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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Effective date: 20121211 |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: HOCHMUTH, HARALD Inventor name: SCHUSTER, THOMAS |
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Effective date: 20140321 |
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