EP1155429A1 - Vakuumschaltkammer mit ringförmigem isolator - Google Patents
Vakuumschaltkammer mit ringförmigem isolatorInfo
- Publication number
- EP1155429A1 EP1155429A1 EP00912399A EP00912399A EP1155429A1 EP 1155429 A1 EP1155429 A1 EP 1155429A1 EP 00912399 A EP00912399 A EP 00912399A EP 00912399 A EP00912399 A EP 00912399A EP 1155429 A1 EP1155429 A1 EP 1155429A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact piece
- membrane
- power connection
- movable contact
- switching
- 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
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
-
- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/6606—Terminal arrangements
- H01H2033/6613—Cooling arrangements directly associated with the terminal arrangements
-
- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66238—Specific bellows details
Definitions
- the invention is in the field of electrical components and can be used in the structural design of vacuum interrupters, the housings of which have two cap-like metal parts and an annular insulator and are provided for switching purposes in the lower alternating voltage range (up to 1000 V).
- the two cap-like metal parts made of copper are each at the end of the tubular wall area by means of a plumb line with the annular insulator connected vacuum-tight.
- a bellows is soldered with its one end in the immediate vicinity of the movable contact piece to its contact bolt and is surrounded concentrically by the annular insulator ;
- a cap-shaped protective shield on the bottom of the movable contact piece protects the bellows against electrical loads.
- This switching tube does not have any special shielding to protect the inner insulating section formed by the annular insulator, since a relatively broad end face of the annular insulator faces away from the contact area.
- the power connections of this known vacuum interrupter chamber are designed as bolts which are passed axially through the respective cap-like metal part.
- the two contact pieces are otherwise as Pot contacts executed; but other well-known ones also come
- Another known contact form is provided, for example, by so-called spiral petal contacts with, in particular, flat, plate-like contact electrodes which are provided with slots running inwards from the outer circumference. These slots can each consist of a rectilinear section and a hole breaking through the contact surface (EP 0 532 513 B1).
- Vacuum interrupters are already known as switching elements for low-voltage contactors, in which the bellows forms part of the outer surface of the housing and in this case is soldered in a vacuum-tight manner on the one hand to the power connection of the movable contact bolt and on the other hand to the end with a short tubular insulator (DE 37 09 585 C2).
- the bellows can be connected to the insulator as well as to the power connection of the movable contact bolt by cutting edge soldering (DE 195 10 850 Cl).
- vacuum switches which have to switch a current of approximately 4,000 A at a switching voltage of approximately 4 volts and in which cylindrical contacts are embedded in planar conductive end plates in order to provide an electrical one
- Each contact is soldered in a vacuum-tight manner via a corrugated, disc-shaped membrane to an insulating ring arranged concentrically to the switching path.
- an axial ring flange designed as a cutting edge soldering connection between the membranes and the insulating ring, there is a holder for a short pipe section -shielded shielding included (US
- the ⁇ tromanschluß of the fixed contact piece is formed as a plate, that the two contact pieces surrounding metal member is tubular and the end side connected to the plate and in that the resilient me ⁇ -metallic barrier wall of a concentric corrugations Provided, disc-shaped membrane, which is soldered on the one hand to the power connection designed as a bolt of the movable contact piece and on the other hand via an axially extending ring flange to the annular insulator.
- the number and size must be suitably dimensioned Depth of corrugations for the membrane.
- the membrane has a number Z of full corrugations with a wall thickness between 0.1 and 0.2 mm and a corrugation depth of approximately half the switching stroke, which is greater than 1 + integer of the third root from the outside Diaphragm diameter D A minus power connection bolt diameter D B multiplied by the wall thickness s of the membrane, but at least 3, whereby the individual dimensions m mm are to be used.
- the above-mentioned boundary condition is as a mathematically formulated relationship: Z> 1 + integer ( ⁇ [ ⁇ O R - D B ) * s]), at least 3.
- the corrugation can be selected such that the radius of curvature corresponds approximately to the switching stroke and the individual shaft antinode corresponds to an arc with a circumferential angle of approximately 90 °.
- the corrugation can also be sinusoidal with straight flanks.
- constructive measures can be used, as are already proposed in the older German patent application 198 02 893.8.
- the flat design of the new vacuum holding chambers can be even more pronounced if the contact pieces are designed as spiral contacts, in particular as flat spiral contacts.
- the use of spiral contacts also leads to better arcing, which results in better switching capacity.
- a disc-shaped vapor barrier between the movable contact piece and the associated power connection bolt which, for example, consists of a chromium-nickel steel and which, in the case of vacuum interrupters with low switching capacity, may be used to mechanically reinforce the thickness of the latter reduced movable spiral contact can be used.
- the new design of the vacuum interrupter also enables a direct connection of the fixed contact piece to the associated plate-like power connection, which ensures optimal heat dissipation when using a connecting pin with a large diameter for the movable contact piece.
- the overall compact design eliminates the need for a special guide for the connecting bolt for the movable contact piece, as has hitherto been customary for vacuum interrupters for circuit breakers using a plastic bushing. This enables a higher thermal load on the vacuum interrupter.
- the new construction of the vacuum holding chamber also makes it possible to construct all individual parts - except for the ring-shaped insulator - so that they can be soldered to one another in a single operation (seal soldering) without the use of expensive and complex soldering molds. For this purpose, it is advisable to connect the fixed contact piece to the plate-like power connection via a short centering stub, while the movable contact piece is connected to the corrugated membrane in a centered manner via the contact pin.
- the shape of the tubular part surrounding the two contact pieces - particularly in their design as flat spiral contacts - depends on the switching capacity provided in each case. With a small switching capacity of about 40 to 60 kA, this part can be designed as a cylinder. With greater switching capacity, i.e. for larger contact diameters, it is advisable to provide the tubular part with a conical taper at the end facing the annular insulator; this enables the use of an insulator and a corrugated membrane with a significantly smaller diameter than that of the spiral contacts.
- tubular part which is preferably made of copper
- the insulating ring arranged between the corrugated membrane and the tubular part of the housing can be designed in a known manner by appropriate design of its cross-sectional contour so that the arrangement of a shield to protect against the deposition of metal vapor particles. If, on the other hand, the insulating ring only fulfills the insulating function, the tubular metal part can have an approach which acts as a steam shield, as is already proposed per se in the earlier German patent application 198 26 766.5.
- the transition from the area belonging to the housing to the area serving as a steam screen is designed in a wave-like manner, so that the metal part only touches the end face of the insulating ring in a linear manner and thus enables a kind of cutting edge soldering in this area.
- FIG. 1 shows the switching chamber in cross section
- Figure 2 shows the plate-like power connection in plan view.
- the housing consists of an upper metal plate 1 made of copper functioning as a power connection, a hollow cylindrical wall part 3 made of copper butt-soldered to it, an annular insulator 4, a corrugated membrane 5 arranged coaxially to the annular insulator 4 and a cylindrical power connection bolt 2.
- the ring-shaped insulator is of the same type as the insulator according to DE 44 22 316 AI, ie approximately square in cross-section and with a bevel and an undercut.
- a fixed flat spiral contact 6 and a movable, flat spiral contact 7 are arranged within the housing.
- the spiral contact 6 is connected to the plate 1 via a short centering connection 61, which engages in a centering hole in the spiral contact.
- the spiral contact 7 is seated on a centering extension 21 of the current supply which causes a narrowing of the current flow. guide pin 2. This is soldered to the corrugated membrane 5 at its other end in the area of a centering projection 22. The membrane 5 is in turn soldered to the insulator 4 via the axially extending ring flange 51. This ring flange can be formed in one piece with the membrane.
- a vapor barrier 9 is arranged in the form of a flat disc made of a mechanically strong material such as chrome-nickel steel. This vapor barrier 9 serves to shade the annular insulator 4 from metal particles of the spiral contacts 6 and 7 released during the switching process.
- the construction of the vacuum interrupter is chosen so that all individual parts can be soldered together in a single soldering process.
- the degassing gaps required for this can be provided in the joining area between the annular insulator 4 and the hollow cylindrical wall part 3 using means known from the prior art.
- a tubular part 3 is provided as the wall part, the ends of which are soldered on the one hand to the metal plate 1 and on the other hand to the one end face of the annular insulator 4; in the right part of the illustration, the wall part 31 is formed in one piece with a shield 32 and is designed to be slightly wave-like in the transition area from the wall part to the shield.
- an insulating ring 41 is used in the right part of the illustration, which has a simple, rectangular cross section.
- a cutting edge soldering is provided on the circumference of the power connection bolt 2
- the corrugated membrane 52 is soldered to the power connection bolt 2 in the region of a centering shoulder.
- an annular flange 51 welded to the membrane is provided in the left-hand illustration, while in the right-hand illustration the annular flange is formed in one piece with the membrane.
- FIG. 2 shows a plan view of the plate 1 of the vacuum holding chambers according to FIG. 1, which acts as a power connection.
- a rectangular or square shape of the flat plate 1 leaves enough space for bores 11, which are used to fasten the power connection to a corresponding part of an associated switching device.
- the membrane shown in FIG. 1 can have the following dimensions, for example:
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19910148 | 1999-02-26 | ||
DE19910148A DE19910148C2 (de) | 1999-02-26 | 1999-02-26 | Vakuumschaltkammer mit ringförmigem Isolator |
PCT/DE2000/000576 WO2000052719A1 (de) | 1999-02-26 | 2000-02-25 | Vakuumschaltkammer mit ringförmigem isolator |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1155429A1 true EP1155429A1 (de) | 2001-11-21 |
EP1155429B1 EP1155429B1 (de) | 2003-01-08 |
Family
ID=7900120
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00912399A Expired - Lifetime EP1155429B1 (de) | 1999-02-26 | 2000-02-25 | Vakuumschaltkammer mit ringförmigem isolator |
Country Status (7)
Country | Link |
---|---|
US (1) | US6864456B1 (de) |
EP (1) | EP1155429B1 (de) |
JP (1) | JP2002538592A (de) |
CN (1) | CN1178254C (de) |
DE (2) | DE19910148C2 (de) |
HK (1) | HK1042773B (de) |
WO (1) | WO2000052719A1 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10065091A1 (de) | 2000-12-21 | 2002-06-27 | Siemens Ag | Kontaktanordnung für eine Vakuumschaltröhre |
NL1020347C2 (nl) * | 2002-04-09 | 2003-10-13 | Holec Holland Nv | Keramische buis voor vacuümonderbreker. Keramische buis voor vacuümonderbreker. |
US7397012B2 (en) * | 2005-05-31 | 2008-07-08 | Thomas & Betts International, Inc. | High current switch and method of operation |
DE102008024419B3 (de) * | 2008-05-16 | 2009-12-31 | Siemens Aktiengesellschaft | Schaltkammer |
DE602008004770D1 (de) * | 2008-09-01 | 2011-03-10 | Abb Technology Ag | Niederspannungs-, Mittelspannungs- oder Hochspannungsanordnung |
US8408925B2 (en) * | 2010-02-03 | 2013-04-02 | Thomas & Betts International, Inc. | Visible open for switchgear assembly |
JP5573250B2 (ja) * | 2010-03-09 | 2014-08-20 | オムロン株式会社 | 封止接点装置 |
US8388381B2 (en) | 2010-07-21 | 2013-03-05 | Thomas & Betts International, Inc. | Visible open for switchgear assembly |
JP5567952B2 (ja) * | 2010-09-10 | 2014-08-06 | パナソニック株式会社 | 接点装置 |
DE102011004212B3 (de) * | 2011-02-16 | 2012-04-26 | Siemens Aktiengesellschaft | Kontaktscheibe für eine Vakuumschaltröhre |
CN102931009A (zh) * | 2011-08-09 | 2013-02-13 | 安徽宇腾真空电气有限责任公司 | 真空开关的加工方法 |
KR20180073179A (ko) * | 2016-12-22 | 2018-07-02 | 엘에스산전 주식회사 | 진공 인터럽터 |
US10541094B1 (en) | 2018-07-27 | 2020-01-21 | Eaton Intelligent Power Limited | Vacuum interrupter with radial bellows |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1813389A1 (de) * | 1968-04-29 | 1970-09-17 | Inst Prueffeld Fuer Elek Sche | Bogenloeschkammer fuer Vakuumschaltgeraete |
DD125892A1 (de) * | 1976-04-12 | 1977-06-01 | ||
DE2725092A1 (de) | 1977-06-03 | 1978-12-14 | Bbc Brown Boveri & Cie | Vakuumschalter |
US4216360A (en) * | 1978-07-27 | 1980-08-05 | Westinghouse Electric Corp. | Low voltage vacuum switch with internal arcing shield |
US4216361A (en) * | 1978-11-17 | 1980-08-05 | Westinghouse Electric Corp. | Low voltage vacuum switch with plural conic shields about the contacts |
DE3343918A1 (de) * | 1983-12-05 | 1985-06-13 | Siemens AG, 1000 Berlin und 8000 München | Vakuumschalter fuer den niederspannungsbereich, insbesondere niederspannungsschuetz |
DE3501603A1 (de) * | 1984-02-02 | 1985-08-01 | Westinghouse Electric Corp., Pittsburgh, Pa. | Niederspannung-hochfrequenz-vakuumschalter |
US4667071A (en) * | 1985-08-30 | 1987-05-19 | General Electric Company | Low voltage vacuum circuit interrupter |
US4672156A (en) * | 1986-04-04 | 1987-06-09 | Westinghouse Electric Corp. | Vacuum interrupter with bellows shield |
DE3825407A1 (de) * | 1988-07-27 | 1990-02-01 | Sachsenwerk Ag | Schaltkammer eines vakuumschalters |
EP0532513B1 (de) * | 1990-06-07 | 1995-02-08 | Siemens Aktiengesellschaft | Kontaktanordnung für eine vakuumschaltröhre |
DE9401655U1 (de) * | 1993-06-18 | 1994-11-03 | Siemens Ag | Vakuumschaltröhre mit ringförigem Isolator |
DE19510850C1 (de) * | 1995-03-17 | 1996-07-25 | Siemens Ag | Vakuumschaltröhre |
EP0740321A3 (de) * | 1995-04-26 | 1998-04-22 | Hitachi, Ltd. | Elektrode für Vakuumlastschalter |
DE19802893A1 (de) * | 1998-01-21 | 1999-07-22 | Siemens Ag | Vakuumschaltkammer mit ringförmigem Isolator |
DE19826766C1 (de) * | 1998-06-12 | 2000-03-30 | Siemens Ag | Vakuumschaltröhre mit einem dem Isolator zugeordneten Dampfschirm |
US6162543A (en) | 1998-12-11 | 2000-12-19 | Saint-Gobain Industrial Ceramics, Inc. | High purity siliconized silicon carbide having high thermal shock resistance |
-
1999
- 1999-02-26 DE DE19910148A patent/DE19910148C2/de not_active Expired - Fee Related
-
2000
- 2000-02-25 WO PCT/DE2000/000576 patent/WO2000052719A1/de active IP Right Grant
- 2000-02-25 CN CNB008043450A patent/CN1178254C/zh not_active Expired - Fee Related
- 2000-02-25 EP EP00912399A patent/EP1155429B1/de not_active Expired - Lifetime
- 2000-02-25 DE DE50001042T patent/DE50001042D1/de not_active Expired - Lifetime
- 2000-02-25 JP JP2000603058A patent/JP2002538592A/ja active Pending
- 2000-02-25 US US09/914,193 patent/US6864456B1/en not_active Expired - Fee Related
-
2002
- 2002-06-18 HK HK02104505.8A patent/HK1042773B/zh not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO0052719A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN1178254C (zh) | 2004-12-01 |
DE19910148A1 (de) | 2000-09-14 |
DE50001042D1 (de) | 2003-02-13 |
EP1155429B1 (de) | 2003-01-08 |
WO2000052719A1 (de) | 2000-09-08 |
HK1042773B (zh) | 2005-05-06 |
DE19910148C2 (de) | 2001-03-22 |
HK1042773A1 (en) | 2002-08-23 |
JP2002538592A (ja) | 2002-11-12 |
CN1341267A (zh) | 2002-03-20 |
US6864456B1 (en) | 2005-03-08 |
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