GB561078A - Improvements in air or gas blast electric switches - Google Patents
Improvements in air or gas blast electric switchesInfo
- Publication number
- GB561078A GB561078A GB10682/42A GB1068242A GB561078A GB 561078 A GB561078 A GB 561078A GB 10682/42 A GB10682/42 A GB 10682/42A GB 1068242 A GB1068242 A GB 1068242A GB 561078 A GB561078 A GB 561078A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blast
- valve
- contact
- nozzle
- piston
- 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
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/16—Impedances connected with contacts
Landscapes
- Circuit Breakers (AREA)
Abstract
561,078. Gas-blast switches. FLUR. SCHEIM, C. H., and METROPOLITANVICKERS ELECTRICAL CO., Ltd. July 30, 1942, No. 10682. [Class 38 (v)] Gas-blast switches employing nozzle-contacts or insulating nozzles to guide the blast have the pressure on the discharge side of the nozzle increased or otherwise controlled by means of a valve responsive also to pressure on the inlet side, so as to increase the gapdielectric strength' and compensate for arc - temperature changes. In a simple form, the insulating nozzle itself, or a nozzle contact, is movable to form a valve, and has two unequal piston surfaces subject to the inlet and discharge pressures, the movable contact being withdrawn through the nozzle, or from it, against the blast, Fig. 1 (not shown). Alternatively, the insulating nozzle is formed at the top of a chamber to which blast is supplied, and is closed by a valve so. as to be subject to the dischargepressure, a smaller upper surface of the valve being subject to the inlet-pressure through a pipe, Fig. 2 (not shown). In both these forms' the contact is moved pneumatically against spring action, and accordingly, where a series isolating switch is employed and more particularly where automatic reclosing means are provided for the arrangement as a whole, it is desirable to'maintain the blast-contacts open in a pressure-gas atmosphere, as in Fig. 3. The movable contact 9a is raised by a piston 36 in a cylinder 35 to which air is admitted from chamber 1 through aperture 49 and passage 50, the air also passing through segmented contact 31 to the upper face of piston 41 lying within flange 43. The lower face co-operating with lip 47 forms a valve controlling the discharge to the space between structural members 32, 33 in accordance with the relative pressures. At a given point in the opening movement, ports 56, 57 pass air to the outer cylinder 53 and through restricted passages 54, 55 in members 32, 33, to the upper face of flange 43, so closing the valve 41 after a delay determined by the size of passages 54, 55 and holding the contacts separated in high-pressure atmosphere so long as the main control valve is open, and allowing the series-isolator to reclose. The lower contact 2a may be tubular, or may be movable in the manner of the contact 9a. Two of such blast-switches may be arranged in series, one over the other, with the fixed contact of the second mounted on the top of cylinder 35 and the blast and operating fluid supplied through a pipe leading from chamber 1 into the corresponding chamber of the second, Fig. 4 (not shown). In Fig. 6, a resistance 81 shunts the main break (not shown) in the manner described in Specification 541,949, and is introduced by auxiliary electrodes, of which 73 is fixed to cylinder 35 and the other 74 is movable by piston 90 so as to separate from 73 in a nozzle 72 after the main piston has uncovered a port 64. The auxiliary electrodes are subjected to a blast and may be controlled by a valve 93. Alternatively, the upper electrode also may be fixed at a relatively short distance from the lower one, Fig. 5 (not shown), and a valve provided for it. In both forms, the valvemay be completely closed, as in Fig. 3, after the auxiliary arc is quenched.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB10682/42A GB561078A (en) | 1942-07-30 | 1942-07-30 | Improvements in air or gas blast electric switches |
US495746A US2367934A (en) | 1942-07-30 | 1943-07-22 | Fluid blast circuit breaker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB10682/42A GB561078A (en) | 1942-07-30 | 1942-07-30 | Improvements in air or gas blast electric switches |
Publications (1)
Publication Number | Publication Date |
---|---|
GB561078A true GB561078A (en) | 1944-05-04 |
Family
ID=9972333
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB10682/42A Expired GB561078A (en) | 1942-07-30 | 1942-07-30 | Improvements in air or gas blast electric switches |
Country Status (2)
Country | Link |
---|---|
US (1) | US2367934A (en) |
GB (1) | GB561078A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111955352A (en) * | 2020-09-08 | 2020-11-20 | 李银增 | Live pig self-cooling colony house and cooling method thereof |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE458962A (en) * | 1942-05-29 | |||
SE115691C1 (en) * | 1944-05-20 | 1946-01-22 | Asea Ab | Compressed air switch |
US2459612A (en) * | 1944-12-22 | 1949-01-18 | Westinghouse Electric Corp | Compressed gas circuit interrupter |
BE462653A (en) * | 1945-01-27 | |||
FR912902A (en) * | 1945-03-08 | 1946-08-23 | Merlin Gerin | Compressed gas switch with delayed cut connector |
US2452221A (en) * | 1945-08-27 | 1948-10-26 | Pacific Electric Mfg Corp | Fluid blast arc extinguishing circuit breaker |
US2581571A (en) * | 1945-10-24 | 1952-01-08 | Westinghouse Electric Corp | Circuit interrupter |
BE488495A (en) * | 1948-04-23 | |||
US2725446A (en) * | 1950-11-18 | 1955-11-29 | Westinghouse Electric Corp | Circuit interrupter |
US2911546A (en) * | 1957-11-21 | 1959-11-03 | Gen Electric | Electric circuit breaker |
US3043940A (en) * | 1958-01-10 | 1962-07-10 | Westinghouse Electric Corp | Compressed-gas circuit interrupter |
US3133176A (en) * | 1960-08-08 | 1964-05-12 | Gen Electric | Gas blast circuit breaker |
JPS528505B1 (en) * | 1970-02-06 | 1977-03-09 |
-
1942
- 1942-07-30 GB GB10682/42A patent/GB561078A/en not_active Expired
-
1943
- 1943-07-22 US US495746A patent/US2367934A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111955352A (en) * | 2020-09-08 | 2020-11-20 | 李银增 | Live pig self-cooling colony house and cooling method thereof |
Also Published As
Publication number | Publication date |
---|---|
US2367934A (en) | 1945-01-23 |
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