EP0729638A1 - Electrical gas-blast switch - Google Patents
Electrical gas-blast switchInfo
- Publication number
- EP0729638A1 EP0729638A1 EP95900060A EP95900060A EP0729638A1 EP 0729638 A1 EP0729638 A1 EP 0729638A1 EP 95900060 A EP95900060 A EP 95900060A EP 95900060 A EP95900060 A EP 95900060A EP 0729638 A1 EP0729638 A1 EP 0729638A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compression
- gas
- switch
- drive
- armature
- 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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H33/882—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts the movement being assisted by accelerating coils
Definitions
- the invention relates to an electrical pressure gas switch with a contact arrangement, which contains a fixed contact piece, a connecting piece and a switching piece that can be moved by a drive, with a compression device for generating an extinguishing gas flow with a compression piston and a compression cylinder, which during the switching-off process of a switch-on position can be displaced relative to one another by the drive, and with a stator that can be excited by a switch-off current, the magnetic field of which causes an axial movement of at least one armature to support the drive.
- Such a pressure gas switch is known from DE-Al-40 10 006 and DE-Al-40 10 007.
- the contact arrangement of the known compressed gas switch contains a switching element which can be moved by a drive and which, in the switched-on state (switched-on position), connects a fixed contact element to a connector through which the load current flows.
- the compression device comprises a compression piston and a compression cylinder which delimit a compression space. When switching off, the piston and cylinder are moved relative to each other. Extinguishing gas located in the compression space is compressed and serves to blow the arc that arises from the contact piece when the contact piece runs off. SFg, for example, is used as the extinguishing gas.
- the contact arrangement is partially surrounded by a stator made of ferromagnetic material and having at least one continuous slot.
- the compression cylinder (DE-Al-40 10 006) or the compression piston (DE-Al 40 10 007) has at least one rod-shaped anchor. Only after partial movement of the compression cylinder during the switch-off process, the armature comes into the area of influence of the magnetic field of the stator, which is excited by the breaking current, which pulls the armature into the slot of the stator to support the drive. The drive-supporting axial movement of the armature, which only begins after the compression cylinder movement has started, is therefore not available for the initial acceleration of the compression cylinder.
- the nominal current flows through the compression cylinder.
- the switch-off current commutates to a gradient coil after a certain movement distance of the cylinder and causes the movement of an annular piston which directly supports the arc blowing.
- US Pat. No. 4,438,308 describes a gas pressure switch in which an auxiliary blowing effect due to spring coils contracting as a result of the cut-off current only begins after the compression cylinder has been moved considerably by a drive.
- the object of the invention is to provide a compressed gas switch in which, particularly at the beginning of the switching-off movement of the compression cylinder, the magnetic effect of the switching-off current is already almost completely available and which enables a quick stop movement with a comparatively low required drive power .
- Stator are arranged such that the magnetic field already causes the armature movement in the switch-on position.
- the two for example, in the event of a short circuit, a significantly increased (short-circuit) current causes an armature movement before the pressure gas switch is triggered and before the switching element and the compression cylinder begin to move, which leads to a reduction in the volume of the compression chamber.
- the compression chamber thus forms a pneumatic energy store.
- the acceleration energy required for the moving switch parts at the start of the switch-off process can advantageously be made available to a large extent by the energy store, so that the drive can be dimensioned inexpensively with a comparatively low output overall.
- the switch according to the invention can switch comparatively quickly.
- a constructively preferred development of the invention provides that the energy store is arranged within the compression cylinder.
- Compression chamber is formed by an output piston which is mechanically connected to the drive.
- the armature can serve directly as the drive piston of the compression chamber.
- the drive piston and the driven piston can have different cross-sections for advantageous adaptation to the required stroke and power requirements.
- the compression chamber thus advantageously also forms a stroke and force converter.
- the stator is a coil.
- the coil consists of a portion of the connector, the wall of which is traversed by a helically wound radial slot.
- FIG. 1 shows a first compressed gas switch according to the invention in the switched-on position
- Figure 2 shows the section along the line II-II in Figure 1 and Figure 3 shows another gas switch.
- the compressed gas switch has a contact arrangement 1 with a fixed contact piece 2, a load current-carrying connection piece 3 coaxially opposite one another at a fixed distance, and a movable contact piece 5.
- the movable contact piece 5 is firmly connected to a compression cylinder 6. Together with a stationary compression piston 7 and a filler 8, this forms a mechanical compression device 10 for an extinguishing gas 11.
- the compression cylinder 6 is connected to a mechanical drive 13 by means of a shift rod 12, which is only indicated, of which a rod 14 and only parts of a fork 15 are shown.
- the connecting piece 3, towards which the compression cylinder 6 moves in the direction of arrow A when it is switched off, is at its end 19 facing away from the arc chamber 18 of two approximately half-moon-shaped, approximately 90 mm high yokes 20, 21 (FIG. 2) surround.
- Guide shafts are formed between their pole faces 20a, 20b and 21a, 21b, which receive two armatures 23, 24.
- Arranged in the central region 26 of the yokes 20, 21 are two conductors 27, 28 which flow through in the same direction as the rated current or cut-off current. Together with the yokes 20, 21, this arrangement forms a stator 29 for the armatures 23, 24.
- the anchors 23, 24 are connected to a ring piston 32 via tie rods 30, 31.
- the piston 32 delimits a compression chamber 34, which is closed on the outside by the compression cylinder 6 and on the inside and bottom by a guide part 36.
- the piston-cylinder system 32, 36, 6 forms a pneumatic energy store 37.
- FIG. 1 shows the conditions in the "switch-on position" 38.
- the load current (short-circuit current) rises before the switch is triggered to such an extent that a magnetic field of the stator 29 is built up that the armatures 23, 24 reach its effective area and between the pole faces 20a, 21a and 20b , 21b of the stator 29 can be pulled (in the view according to FIG. 2, the anchors are shown in this position and their reference numbers are placed in brackets).
- the piston 32 rigidly connected to the armatures 23, 24 via the tie rods 30, 31 is consequently moved in the direction of arrow A while compressing the extinguishing gas contained in the compression chamber 34. The movement of the piston 32 ends before the switch is triggered, i. H.
- the pneumatic energy stored in the compression chamber 34 is immediately available.
- the bottom area of the guide part 36 is pressurized with the compression chamber overpressure, which acts strongly to support the drive during the initial movement (acceleration) of the compression cylinder 6 and possibly other switch parts, so that a fast switching with comparatively low drive power is possible.
- FIG. 3 shows an embodiment of a compressed gas switch modified in terms of the armature arrangement and the stator in FIG Switch-on position 38. Parts corresponding to FIG. 1 are provided with the same reference symbols.
- An armature 50 is movable in a guide tube 52 lined with insulating material 51 against the force of a positioning spring 53 in the direction of a rear flange 55.
- the armature 50 delimits with its one end face 56 a compression chamber 58, the jacket of which is surrounded by the insulating material 51 and a rear part 59 of the connecting piece 3.
- the other end face of the compression camera 58 is delimited by an output piston 60, which is mechanically connected to a fork 62 via a pipe 61.
- a section 64 of the connecting part 59 forms a coil 65 surrounding the compression chamber 58, in that the wall of the section 64 is penetrated by a continuous radial slot 66 which is wound like a screw. The turns are well insulated from each other.
- a cut-off current flowing through the coil 65 generates a magnetic field in the stator 67 formed by the coil 65, which moves the armature 50 in the direction of arrow A to the flange 55.
- Extinguishing gas contained in the compression chamber 58 is compressed.
- the compression chamber 58 acts as an energy store and transmits the stored energy via the output piston 60 to the fork 62.
- An opening 69 serves for the quenching gas outlet during the movement of the compression cylinder 6.
- the above-mentioned configuration of a compressed gas switch allows a particularly compact arrangement of the compression chamber, which is particularly suitable for the use of a coil as a stator. Due to the design of the pressurized surface 56 of the armature 50 and the surface 70 of the driven piston 60, one is optimal adjustment of the drive support to the stroke and power requirements possible. It can also be provided that the armature 50 is latched in such a way that the latch can only be released again when the switch is in the on position. The release can be done via a guide rod 71 of the positioning spring 53. This can prevent the compression chamber 58 from acting on a short circuit against the switch-on movement when switched on.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4339925A DE4339925A1 (en) | 1993-11-19 | 1993-11-19 | Electric gas pressure switch |
DE4339925 | 1993-11-19 | ||
PCT/DE1994/001296 WO1995014302A1 (en) | 1993-11-19 | 1994-10-27 | Electrical gas-blast switch |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0729638A1 true EP0729638A1 (en) | 1996-09-04 |
EP0729638B1 EP0729638B1 (en) | 1997-06-04 |
Family
ID=6503249
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95900060A Expired - Lifetime EP0729638B1 (en) | 1993-11-19 | 1994-10-27 | Electrical gas-blast switch |
Country Status (6)
Country | Link |
---|---|
US (1) | US5705781A (en) |
EP (1) | EP0729638B1 (en) |
JP (1) | JPH09505179A (en) |
CA (1) | CA2176953A1 (en) |
DE (2) | DE4339925A1 (en) |
WO (1) | WO1995014302A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19745550A1 (en) * | 1997-10-10 | 1999-04-15 | Siemens Ag | Gas-blast circuit-breaker arrangement |
US11467856B2 (en) * | 2002-12-12 | 2022-10-11 | Flexiworld Technologies, Inc. | Portable USB device for internet access service |
US7908401B2 (en) | 2002-12-12 | 2011-03-15 | Flexiworld Technology, Inc. | Method and device for wireless communication between computing devices |
CN107885679B (en) | 2003-04-11 | 2021-10-08 | 富意科技公司 | Integrated circuit storage device or method capable of realizing automatic operation |
WO2014093682A1 (en) * | 2012-12-12 | 2014-06-19 | Southern States, Llc | Sealed solenoid magnetically operated high voltage electric power switch |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3590188A (en) * | 1966-09-01 | 1971-06-29 | Westinghouse Electric Corp | Fluid-blast circuit interrupter with piston assembly and electromagnetic driving means |
US3621171A (en) * | 1968-05-06 | 1971-11-16 | Hitachi Ltd | Gas blast circuit breaker with puffer piston having an electrodynamic assist in the form of axially overlapping coils |
US3902031A (en) * | 1974-07-17 | 1975-08-26 | Ite Imperial Corp | Puffer interrupter operating mechanism with magnetic assist and arcless and switchless coil cut-in |
US4041263A (en) * | 1975-08-22 | 1977-08-09 | General Electric Company | Electric circuit interrupter of the puffer type comprising a magnetically actuated piston |
CH594977A5 (en) * | 1976-03-29 | 1978-01-31 | Bbc Brown Boveri & Cie | |
DE3015946A1 (en) * | 1980-04-25 | 1981-10-29 | Brown, Boveri & Cie Ag, 6800 Mannheim | PISTON SWITCH |
DE3124075A1 (en) * | 1981-03-30 | 1982-09-16 | Ernst Prof. Dr.techn.habil. 1000 Berlin Slamecka | HIGH VOLTAGE SWITCHING CHAMBER |
DE3141324C2 (en) * | 1981-10-17 | 1986-02-06 | BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau | Circuit breaker |
FR2542499B1 (en) * | 1983-03-11 | 1985-06-28 | Alsthom Atlantique | PNEUMATIC SELF-BLOWING CIRCUIT BREAKER |
DE4010007A1 (en) * | 1990-03-26 | 1991-10-02 | Siemens Ag | Pressure gas circuit breaker with driven compression cylinder |
DE4010006A1 (en) * | 1990-03-26 | 1991-10-02 | Siemens Ag | Electrical pressure gas circuit breaker with mechanical compression - quenches gas and has conductor through which current flows in longitudinal direction surrounded by at least one ferromagnetic body |
-
1993
- 1993-11-19 DE DE4339925A patent/DE4339925A1/en not_active Withdrawn
-
1994
- 1994-10-27 DE DE59403055T patent/DE59403055D1/en not_active Expired - Fee Related
- 1994-10-27 WO PCT/DE1994/001296 patent/WO1995014302A1/en active IP Right Grant
- 1994-10-27 US US08/646,303 patent/US5705781A/en not_active Expired - Fee Related
- 1994-10-27 JP JP7514146A patent/JPH09505179A/en active Pending
- 1994-10-27 EP EP95900060A patent/EP0729638B1/en not_active Expired - Lifetime
- 1994-10-27 CA CA002176953A patent/CA2176953A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO9514302A1 * |
Also Published As
Publication number | Publication date |
---|---|
CA2176953A1 (en) | 1995-05-26 |
JPH09505179A (en) | 1997-05-20 |
WO1995014302A1 (en) | 1995-05-26 |
EP0729638B1 (en) | 1997-06-04 |
DE4339925A1 (en) | 1995-05-24 |
US5705781A (en) | 1998-01-06 |
DE59403055D1 (en) | 1997-07-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1359597B1 (en) | Circuit breaker | |
EP4191845A1 (en) | Electrodynamic drive | |
EP1124243A2 (en) | Circuit breaker | |
EP0039096B1 (en) | Puffer type gas-blast circuit interrupter | |
EP0766278A2 (en) | Circuit breaker | |
EP0729638B1 (en) | Electrical gas-blast switch | |
DE3141324A1 (en) | CIRCUIT BREAKER | |
DE2319836C3 (en) | Circuit breaker | |
DE2935673A1 (en) | SELF-CLEARING SWITCH | |
EP0442311B1 (en) | Fast electromagnetic trip unit for electrical switching devices | |
EP2257954B1 (en) | Electromagnetic actuator | |
EP1671343B1 (en) | Drive for a vacuum switch gear | |
WO1991015025A1 (en) | Gas-driven power switch with power-assisted piston | |
EP2506272A1 (en) | Quick-switching lifting magnet | |
EP0729637B1 (en) | Electrical gas-blast switch | |
DE1690503A1 (en) | Flow switch | |
DE1102860B (en) | Circuit breaker | |
WO1995033274A1 (en) | Compressed-gas circuit breaker with a nozzle made of insulating material | |
DE3239672A1 (en) | ELECTROMAGNET FOR A STARTER ENGINE OF AN INTERNAL COMBUSTION ENGINE WITH TWO WINDINGS | |
DE3104411C2 (en) | ||
AT225785B (en) | Surge generator | |
WO2021121838A1 (en) | Electrical switching device | |
DE1255814B (en) | Electromagnetic rapid control device | |
CH607658A5 (en) | Gas-blast circuit breaker | |
DE2324992B2 (en) | CIRCUIT BREAKER |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19960404 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE CH DE FR GB LI NL SE |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: ROLFF, KLAUS-PETER Inventor name: HABEDANK, ULRICH, DR. |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
17Q | First examination report despatched |
Effective date: 19961119 |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): BE CH DE FR GB LI NL SE |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: SIEMENS SCHWEIZ AG |
|
REF | Corresponds to: |
Ref document number: 59403055 Country of ref document: DE Date of ref document: 19970710 |
|
ET | Fr: translation filed | ||
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19970811 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19980909 Year of fee payment: 5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 19981016 Year of fee payment: 5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19981023 Year of fee payment: 5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19981027 Year of fee payment: 5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19981030 Year of fee payment: 5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19981217 Year of fee payment: 5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 19990119 Year of fee payment: 5 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19991027 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19991030 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19991031 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19991031 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19991031 |
|
BERE | Be: lapsed |
Owner name: SIEMENS A.G. Effective date: 19991031 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000501 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19991027 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
EUG | Se: european patent has lapsed |
Ref document number: 95900060.5 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000630 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20000501 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000801 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |