GB1259263A - - Google Patents
Info
- Publication number
- GB1259263A GB1259263A GB1259263DA GB1259263A GB 1259263 A GB1259263 A GB 1259263A GB 1259263D A GB1259263D A GB 1259263DA GB 1259263 A GB1259263 A GB 1259263A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- gas
- pressure
- blast
- cylinder
- 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.)
- Expired
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
- H01H33/80—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid flow of arc-extinguishing fluid from a pressure source being controlled by a valve
- H01H33/82—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid flow of arc-extinguishing fluid from a pressure source being controlled by a valve the fluid being air or gas
Landscapes
- Circuit Breakers (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
1,259,263. Gas blast circuit breakers. BROWN BOVERI & CO. Ltd. 16 Feb., 1970 [18 Feb., 1969], No. 7281/70. Heading H1N. A gas blast circuit-breaker comprises a highpressure gas chamber 6 having gas blast outlets 2d controlled by a slidable cylinder 7 with corresponding peripheral orifices 7a and operated by an insulated push-rod 8. The highpressure gas released enters an upper chamber 2b and hence causes a drive piston 11 to move downwards and so operate a mechanical linkage 12a, 12b, 12c. Movable nozzle contact 5 is released from fixed contact 4 and toggle linkage 13 assumes a second set position. The piston 11 moves within an apertured cylinder 10 movable by the piston within a compartment formed in the housing 2. Four axially spaced lateral ports 9 are provided in the wall of the compartment to correspond with cylinder ports 9<SP>1</SP> in one of the cylinder positions. Upward movement of the push-rod 8 from the open circuit-breaker position of Fig. 1b (not shown) provides a highpressure blast to the lower face of the piston 11 through the lowest port 9 causing the breaker contacts to close. The lower part of the housing 2 is maintained at a low pressure by a compressor, as with the nozzle contact open the high-pressure blast passes through the nozzle and tends to prevent a pressure differential occurring across the piston. A compressor, which may be both pressure and temperature controlled, may return gas from the lower pressure zone to the high pressure chamber.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH241269A CH495625A (en) | 1969-02-18 | 1969-02-18 | Gas pressure switch |
| DE1908249A DE1908249C3 (en) | 1969-02-18 | 1969-02-19 | Gas switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1259263A true GB1259263A (en) | 1972-01-05 |
Family
ID=25690392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1259263D Expired GB1259263A (en) | 1969-02-18 | 1970-02-16 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3597557A (en) |
| CH (1) | CH495625A (en) |
| DE (1) | DE1908249C3 (en) |
| FR (1) | FR2035466A5 (en) |
| GB (1) | GB1259263A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3852548A (en) * | 1973-07-18 | 1974-12-03 | Allis Chalmers | Actuating mechanism for contact and blast valve unit |
| US4307273A (en) * | 1978-03-24 | 1981-12-22 | Hitachi, Ltd. | Gas blast circuit breaker |
| US4418336A (en) * | 1981-07-17 | 1983-11-29 | Taylor John D | Alarm indicating dislocation of fire extinguisher |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE921521C (en) * | 1952-10-08 | 1954-12-20 | Voigt & Haeffner Ag | Liquid extinguishing chamber with differential pump piston |
| FR1128745A (en) * | 1955-07-11 | 1957-01-09 | Hydraulic cylinder particularly suitable for controlling high voltage circuit breakers | |
| DE1218584B (en) * | 1963-12-30 | 1966-06-08 | Licentia Gmbh | High-voltage circuit breaker with arc extinguishing by a flowing extinguishing agent |
| DE1216962B (en) * | 1964-01-24 | 1966-05-18 | Bbc Brown Boveri & Cie | Device for pressure gas switch |
| DE1233048B (en) * | 1965-12-18 | 1967-01-26 | Licentia Gmbh | High-voltage circuit breaker with arc extinguishing by a flowing extinguishing agent |
| US3436505A (en) * | 1966-05-04 | 1969-04-01 | Ite Circuit Breaker Ltd | Slide valve for gas blast breakers |
-
1969
- 1969-02-18 CH CH241269A patent/CH495625A/en not_active IP Right Cessation
- 1969-02-19 DE DE1908249A patent/DE1908249C3/en not_active Expired
-
1970
- 1970-02-12 US US10852A patent/US3597557A/en not_active Expired - Lifetime
- 1970-02-16 GB GB1259263D patent/GB1259263A/en not_active Expired
- 1970-02-16 FR FR7005374A patent/FR2035466A5/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1908249C3 (en) | 1980-01-10 |
| CH495625A (en) | 1970-08-31 |
| DE1908249B2 (en) | 1979-04-12 |
| US3597557A (en) | 1971-08-03 |
| DE1908249A1 (en) | 1970-09-17 |
| FR2035466A5 (en) | 1970-12-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| 435 | Patent endorsed 'licences of right' on the date specified (sect. 35/1949) | ||
| PCNP | Patent ceased through non-payment of renewal fee |