EP1905052A1 - AUSDEHNUNGSGEFÄß FÜR STUFENSCHALTER - Google Patents
AUSDEHNUNGSGEFÄß FÜR STUFENSCHALTERInfo
- Publication number
- EP1905052A1 EP1905052A1 EP06777798A EP06777798A EP1905052A1 EP 1905052 A1 EP1905052 A1 EP 1905052A1 EP 06777798 A EP06777798 A EP 06777798A EP 06777798 A EP06777798 A EP 06777798A EP 1905052 A1 EP1905052 A1 EP 1905052A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- arrangement according
- switch
- compensator
- insulating liquid
- expansion vessel
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
-
- 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
- H01H9/0044—Casings; Mountings; Disposition in transformer housing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/404—Protective devices specially adapted for fluid filled transformers
-
- 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
- H01F29/025—Constructional details of transformers or reactors with tapping on coil or windings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
- H01H33/55—Oil reservoirs or tanks; Lowering means therefor
- H01H33/555—Protective arrangements responsive to abnormal fluid pressure, liquid level or liquid displacement, e.g. Buchholz relays
Definitions
- the invention relates to a ge ⁇ filled with an insulating liquid tap changer and means for receiving the thermally induced volume fluctuations of this insulating liquid.
- the invention enables a hermetic closure of the switch vessel and thus a significant reduction in the aging of the switch oil.
- the use of the arrangement according to the invention also makes it possible to dispense with dehumidifier, external expansion vessel and associated piping. Furthermore, the invention solves the problem of gas accumulation in the piping to the expansion vessel of hermetically sealed switches.
- Tap changers of the type mentioned above are mainly used in power transformers for regulating the voltage under load. In operation occurs by heating the over- switching resistors, heat dissipation through the switch and its vessel surrounding insulating and cooling medium of Transforma ⁇ tors and other influences to significant temperature fluctuations. These cause significant changes in the volume of the insulating liquid of the tap changer. Furthermore, it is by switching arcs and / or heating of the over- switching resistors for thermal decomposition of Isolierflüs ⁇ stechnik and the resulting gas evolution. These gases rise due to their lower density and must be removed by suitable measures.
- the invention described hereinafter permits a com pensation ⁇ the change in the volume of the insulating liquid in the operation of the switch, while avoiding the disadvantages mentioned above.
- the present invention uses a bellows / compensator to absorb the thermally induced volume fluctuations of the insulating liquid of the switch.
- this compensation device forms a compact assembly oh ⁇ ne additional piping and is mounted directly on the switch.
- the shape of the expansion vessel is largely adapted to the contour of the tap changer head, so that the space requirement is kept small.
- the expansion tank thus forms a unit with the switch and remains attached during transport.
- the cumbersome installation of expansion vessel and pipes in the installation of the transformer omitted.
- For volume compensation operations only the differential volume between the stretched condition and the collapsed condition can be used with bellows and / or compensators.
- the basic volume in the folded state is not usable.
- the non-usable Volu is ⁇ men by introducing a cup- or pot-shaped insert to a minimum limited.
- this pot is formed so that a cavity is created, which can be used to accommodate or accommodate the necessary protection and monitoring technology.
- this pot is designed such that it serves as a cover and protective cover for the protection, monitoring and control devices.
- this pot is the
- the compensation body becomes part of the switch. Additional external construction ⁇ groups eliminated and lead to a simplification of the whole transformer. Problems with gas accumulation in pipelines and obstruction of the oil flow in the event of temperature changes of the insulating liquid are ruled out by omission of the assemblies subject to these problems.
- the inventive design of the volume compensation device makes it possible to achieve a complete closure of the insulating liquid of the switch from the atmosphere / ambient air.
- the absorption of moisture and oxygen by the insulating liquid is prevented.
- An influence of the electr. Damping strength of the insulating liquid by moisture is avoided and the aging of the Iso ⁇ lier slimkeit significantly reduced.
- the outer expan ⁇ tion vessel, the dehumidifier and the associated piping can be omitted.
- the regular examination of the Standes of the desiccant in the dehumidifier can be ⁇ saves and it comes to cost savings by eliminating the costly regular replacement of desiccant. Pollution and disposal problems caused by spent desiccants are avoided.
- the switch is equipped with a gas release valve (V3).
- V3 gas release valve
- This can expediently be designed or controlled in such a way that it responds to a small gas pressure, but not depending on the presence of insulating liquid.
- This is advantageous ⁇ way legally realized by controlling the gas discharge valve by means of a float (SW).
- SW float
- a constant pumping of the gases is possible.
- DI large-area pressure relief valve
- DI large-area pressure relief valve
- this design made ⁇ light also a leakage monitoring.
- a guide tube By using a guide tube, the bellows of the expansion joint can be protected against since ⁇ royal Dodge (buckling).
- This guide tube can also be used to accommodate the occurring during transport of the transformer lateral acceleration forces.
- the Druckwellenleit adopted for the pressure relief valve is used as a guide tube for the bellows.
- the Druckwellenleit adopted is designed such that a secure transmission of the pressure waves is ensured both with stretched compensator and with a compressed compensator.
- Movable basic element of the compensator is the metal bellows, which has an axial mobility due to its ring-shaped circumferential waves, which in the case of application fertil in the expansion vessel according to the invention to compensate for the thermally induced volume changes of the insulating liquid of the tap changer is used.
- This bellows derives its mobility from the flexibility of the radial standing flanks. It is preferable for the described application, the lyre-shaped shaft due to the great flexibility with sufficient compressive strength.
- the compensating body is provided with a spring element in order to achieve a predetermined pressure play.
- spring elements can also be formed by the body of the compensator itself ⁇ the.
- the compensating device is equipped with a volume limitation in one or both directions. This allows, for example, in the switch vessel a special requirements corresponding pressure game rea ⁇ be linstrument. This limitation is also possible by a stroke limitation of the compensation elements and a multi-part compensating device with chambers of different spring constant.
- FIG. 1 shows a switch (S) with a switch head (SK), which is arranged on the cover (TD) of a transformer.
- the space inside the switch (S) is filled with insulating liquid. Since the housing of the switch (S) terminates this herm ⁇ table, it comes when heating the Isolierplus ⁇ speed of the switch to an increase in the internal pressure in the switch. This pressure increase causes an expansion of the compensator (K). Gases which form as a result of thermal oil decomposition rise upwards and are guided through the cylindrical pipe sections (R1) to a monitoring device (D1). One of the two pipe segments (Rl) is arranged on the movable end plate of the compensator.
- Pressure relief valve are passed.
- the oil passage in the expansion vessel of the rule space in the exemplary embodiment by Zvi ⁇ between the two pipe or guide pieces (R1 + R2) formed is, is so designed that it for the slow running thermally dependent volume fluctuations of a sufficient flow of oil allows for the explosionsarti ⁇ is gen increases in volume in case of damage but such damping that does not have the pressure wave to the bellows via ⁇ wear but is guided within the pipe socket (Rl) to the pressure relief valve (Dl).
- FIG. 2 shows a tap changer (S) according to the invention with expansion vessel, wherein a usual for tap changer protective relay (D2) via the pipe (R2) with the interior of the switch (S) is connected.
- D2 tap changer protective relay
- FIG. 3 shows an embodiment of the Heidelbergerausdeh ⁇ expansion vessel in which a bellows (K) is built as a negative Kompensa ⁇ tor in the cylindrical expansion vessel.
- the axial movement of the bellows results in the adjustment of the Volu ⁇ mens.
- the movable inner cover plate of the off ⁇ expansion vessel (P2) and the bellows (K) form a cavity which is ge for accommodating the monitoring device of the switch ⁇ uses.
- the movement of the cover plate (P2) is used on a display device (AV) for indicating the oil volume or the corresponding temperature of the insulating liquid of the tap changer.
- AV display device
- FIG. 4 shows an embodiment of the Heidelbergerausdeh ⁇ expansion vessel in which a bellows (K) as a positive expansion joint tor the variations in volume of the insulating liquid of the Stu ⁇ fenschalters compensates.
- a bellows (K) as a positive expansion joint tor the variations in volume of the insulating liquid of the Stu ⁇ fenschalters compensates.
- a fixed topfförmi ⁇ ger inner cylinder (T) which encloses the monitoring devices of the stu ⁇ fenschalters.
- This cup-shaped inner cylinder (T) is advantageously largely adapted to the shape of the bellows (K) in the compressed state.
- this inner cylinder serves at the same time as oil collection hood and
- FIG. 5 shows a transformer as an electrical component with a hermetically sealed housing (4) which is filled with an insulating liquid (5).
- a pipe ⁇ line which is connected to a Buchholz relay (Bl) and an expansion vessel (Kl).
- a membrane In the expansion vessel (Kl) a membrane is housed, which separates the insulating liquid from the gas.
- the gas space is equipped via a pipe (R7) with further chambers for a second gas cushion (K2), which are arranged such that a thermal decoupling of the gas cushion (K2) from the temperature of the insulating liquid (5) takes place in the transformer.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL06777798T PL1905052T3 (pl) | 2005-07-15 | 2006-07-14 | Naczynie rozszerzalnościowe do przełącznika stopniowego |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510033925 DE102005033925A1 (de) | 2005-07-15 | 2005-07-15 | Ausdehnungsgefäß für Stufenschalter |
DE102005034851 | 2005-07-17 | ||
PCT/EP2006/064292 WO2007009960A1 (de) | 2005-07-15 | 2006-07-14 | AUSDEHNUNGSGEFÄß FÜR STUFENSCHALTER |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1905052A1 true EP1905052A1 (de) | 2008-04-02 |
EP1905052B1 EP1905052B1 (de) | 2017-03-01 |
Family
ID=37114482
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06777798.7A Not-in-force EP1905052B1 (de) | 2005-07-15 | 2006-07-14 | Ausdehnungsgefäss für stufenschalter |
Country Status (6)
Country | Link |
---|---|
US (1) | US20080196920A1 (de) |
EP (1) | EP1905052B1 (de) |
ES (1) | ES2626259T3 (de) |
PL (1) | PL1905052T3 (de) |
PT (1) | PT1905052T (de) |
WO (1) | WO2007009960A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013100264A1 (de) | 2013-01-11 | 2014-07-17 | Maschinenfabrik Reinhausen Gmbh | Laststufenschalter mit einer Verbindung zum Ölvolumen eines Transformators |
DE102013100266A1 (de) | 2013-01-11 | 2014-07-17 | Maschinenfabrik Reinhausen Gmbh | Laststufenschalter |
DE102013100263A1 (de) | 2013-01-11 | 2014-07-31 | Maschinenfabrik Reinhausen Gmbh | Laststufenschalter mit einer Verbindung zum Ölvolumen eines Transformators |
EP2955729A1 (de) * | 2014-06-13 | 2015-12-16 | Siemens Aktiengesellschaft | Stützvorrichtung eines Aktivteils eines Stromwandlers |
EP3057112B1 (de) * | 2015-02-16 | 2020-05-20 | ABB Power Grids Switzerland AG | Öltransformator |
EP3121825B1 (de) * | 2015-07-22 | 2020-09-16 | Siemens Aktiengesellschaft | Aufnahmevorrichtung zur aufnahme von isolierflüssigkeit |
CN108630397A (zh) * | 2017-03-15 | 2018-10-09 | 沈阳海为电力装备股份有限公司 | 一种带分流阀的变压器地下储油冷却补偿装置 |
CN108630398A (zh) * | 2017-03-15 | 2018-10-09 | 沈阳海为电力装备股份有限公司 | 一种波纹补偿散热器 |
CN110440083B (zh) * | 2019-09-16 | 2024-05-24 | 上海克硫环保科技股份有限公司 | 一种膨胀节结构及换热装置 |
EP4095874A1 (de) * | 2021-05-24 | 2022-11-30 | Hitachi Energy Switzerland AG | Stufenschalteranordnung und transformatortankanordnung |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB425169A (en) * | 1933-09-08 | 1935-03-08 | John Lindley Thompson | Improvements in or relating to expansion chambers for hermetically sealed tanks or casings, applicable to the cooling tanks of electrical apparatus |
DE748174C (de) * | 1940-03-01 | 1944-10-27 | Gehaeuse fuer Transformatoren, Kondensatoren oder aehnlcihe elektrische Geraete | |
DE755544C (de) * | 1941-06-04 | 1953-08-31 | Siemens Schuckertwerke A G | Schutzeinrichtung zum Anzeigen von Stoerungen in fluessigkeits-gefuellten Behaeltern, insbesondere elektrischen Geraete- und Maschinengehaeusen |
US2623083A (en) * | 1941-08-13 | 1952-12-23 | Schlumberger Prospection | Acceleration-insensitive measuring instrument |
CH269213A (de) * | 1946-12-14 | 1950-06-30 | Skoda Entreprise Nationale Ets | Stromwandler für Höchstspannungen. |
US2903500A (en) * | 1952-10-28 | 1959-09-08 | Western Union Telegraph Co | Submersible chamber |
DE1913402U (de) * | 1964-08-24 | 1965-04-08 | Siemens Ag | Mit einem isoliermittel gefuelltes, gegen- ueber der aussenluft dicht abgeschlossenes gehaeuse fuer ein hochspannungsgeraet, wie transformator, messwandler od. dgl., mit ausdehnungsgefaess. |
US3532842A (en) * | 1966-08-05 | 1970-10-06 | Gen Electric | Switch actuating and control mechanism for vacuum type electric circuit interrupters with lost-motion and bellows biasing means |
US3715798A (en) * | 1970-06-12 | 1973-02-13 | Dezurik Corp | Assembling bellows damper unit |
US3670276A (en) * | 1971-02-11 | 1972-06-13 | Ltv Ling Altec Inc | Hermetic transformer |
CA989947A (en) * | 1973-02-13 | 1976-05-25 | Canadian General Electric Company Limited | Pressurized oil-filled capacitor structure |
JPS5243940A (en) * | 1975-10-03 | 1977-04-06 | Hitachi Ltd | Bellows |
DE2806745A1 (de) * | 1978-02-17 | 1979-08-23 | Ritz Messwandler Kg | Oel-ausdehnungsgefaess ohne innere oelfuellung |
JPS59134516A (ja) * | 1983-01-20 | 1984-08-02 | 三菱電機株式会社 | 負荷時タツプ切換装置 |
JPS61128506A (ja) * | 1984-11-28 | 1986-06-16 | Mitsubishi Electric Corp | 油入電気機器 |
JPH03192707A (ja) * | 1989-12-22 | 1991-08-22 | Hitachi Ltd | 不燃負荷時タップ切換器 |
JPH0666080U (ja) * | 1993-02-22 | 1994-09-16 | 住友電装株式会社 | 防水筺体 |
US5937893A (en) * | 1997-05-27 | 1999-08-17 | Qualitrol Corporation | Shield for pressure relief device |
ATE389840T1 (de) * | 2003-03-19 | 2008-04-15 | Reinhausen Maschf Scheubeck | Druckentlastungsventil |
-
2006
- 2006-07-14 ES ES06777798.7T patent/ES2626259T3/es active Active
- 2006-07-14 PL PL06777798T patent/PL1905052T3/pl unknown
- 2006-07-14 US US11/995,771 patent/US20080196920A1/en not_active Abandoned
- 2006-07-14 PT PT67777987T patent/PT1905052T/pt unknown
- 2006-07-14 EP EP06777798.7A patent/EP1905052B1/de not_active Not-in-force
- 2006-07-14 WO PCT/EP2006/064292 patent/WO2007009960A1/de not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO2007009960A1 * |
Also Published As
Publication number | Publication date |
---|---|
ES2626259T3 (es) | 2017-07-24 |
PT1905052T (pt) | 2017-05-03 |
US20080196920A1 (en) | 2008-08-21 |
PL1905052T3 (pl) | 2017-08-31 |
EP1905052B1 (de) | 2017-03-01 |
WO2007009960A1 (de) | 2007-01-25 |
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