GB516529A - Improvements in or relating to electric circuit-breaking devices of the gas-blast type - Google Patents
Improvements in or relating to electric circuit-breaking devices of the gas-blast typeInfo
- Publication number
- GB516529A GB516529A GB1838638A GB1838638A GB516529A GB 516529 A GB516529 A GB 516529A GB 1838638 A GB1838638 A GB 1838638A GB 1838638 A GB1838638 A GB 1838638A GB 516529 A GB516529 A GB 516529A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vents
- gas
- arc
- blast
- rod
- 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
- H01H33/72—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
-
- 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
- H01H33/72—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
- H01H33/74—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber wherein the break is in gas
-
- 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
-
- 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
- H01H33/90—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 this movement being effected by or in conjunction with the contact-operating mechanism
- H01H33/91—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 this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas
-
- 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
- H01H33/98—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow
Abstract
516,529. Fluid-blast switches. REYROLLE & CO., Ltd., A, COATES, F., LEESON, B. H., and ALLAN, A. June 21, 1938, No. 18386. [Class 38 (v)] The arc formed on opening the circuit is drawn across a lateral discharge vent (or a group of vents having aligned throats) in the wall of an enclosure within which the arc is formed, and is forced through such vents by a blast of deionizing gas under pressure supplied to the enclosure through one or more openings in the wall opposite the vents, and the latter are of such size and the arc is drawn in such close proximity thereto, that substantially all the gas discharged through the vents must pass through the arc path. The gas may be air, nitrogen, carbon dioxide, argon or gaseous fluorinated alkyl chloride such as difluorodichloro-methane. In Fig. 1, the fixed contact A with arcing-tip A<2> is in a metal housing A' in an insulating structure comprising a stack of plates B', secured by bolts B<2>, and certain plates being provided with vents B' extending from the central opening. The movable contact rod C is a close fit in the latter and may have an arcing-tip co-operating with A<2> to form the arc adjacent the vents B<3>. The rod C slides in a contact C' to which is attached a lead C‹ arranged to form with C a current-loop to force the arc electrodynamically against the vents, which action may be reinforced or replaced by that of magnetic inserts in certain of the plates. The rod C is in two parts separated by insulation C<4> and may, in the open position, move clear of the structure and into a body of clean gas or liquid, or a separate isolating break may be arranged alongside the main break to act electrodynamically thereon. In the former case gas is prevented from leaking by arranging in the discharge tube D<1> a valve which is opened for the switching operation in order to eliminate back-pressure. The gas-supply pipe G opens directly into the container F<3> acting as a reservoir and above the valve E<2> leads into the structure by way of aligned holes B<4> in the plate B<1>. The rod C may act as a valve controlling the delivery of blast-gas from the ports to the vents by progressively opening either or both of the latter. The vents may be in vertical alignment with one another or may be offset on either side alternately, or they may be arranged in the manner shown at G' in Fig. 8. Fig. 5 shows another structure comprising a pair of blocks H secured face-to-face by bolts H<1> and having registering grooves to form vents H<2>, H<3> and a port or ports H<4>, H<5>, but a further, and horizontal, vent may be provided between those shown. A slot H‹ adjacent the vent-throats ensures proper positioning of the arc in those throats, the slot being of such size that it will be filled by the arc. The slot may extend down the full length of the structure to receive an arcing projection on the rod C, or the latter may be a flat bar filling the slot. The gas-blast may be obtained by the means described in Specification 516,532. The structure D may exhaust into an outer casing N<1>, Fig. 8 by way of vents N located to provide a tortuous path for the escaping blast at N<2>. Transverse annular plates in the casing N' separate the exhaust-space from the remainder, which may contain insulating compound, compressed-gas, or pulverulent material such as magnesia. The lead-in conductors are arranged at right-angles to the movable contact-rod to provide a current-loop for forcing the arc against the vents G<7>. Circuit may be opened by moving the arcing structure and fixing the " movable " contact, or the movable contact may carry a pneumatically-actuated piston. The gas-pressure may also act on a piston on the movable contact to produce opening of the switch. Specification 516,530 is also referred to. The Provisional Specification describes a form employing a tubular blast-conveying contact, there being no other blast-opening.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1854838A GB516238A (en) | 1938-06-22 | 1938-06-22 | Improvements in or relating to electric circuit-breaking devices of the gas-blast type |
Publications (1)
Publication Number | Publication Date |
---|---|
GB516529A true GB516529A (en) | 1940-01-04 |
Family
ID=10114316
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1939038A Expired GB516532A (en) | 1938-06-22 | 1938-06-21 | Improvements in or relating to electric circuit-breaking devices of the gas-blast type |
GB1838938A Expired GB516531A (en) | 1938-06-22 | 1938-06-21 | Improvements in or relating to electric circuit-breakers of the air-blast or gas-blast type |
GB1838738A Expired GB516530A (en) | 1938-06-22 | 1938-06-21 | Improvements in or relating to electric circuit-breaking devices of the gas-blast type |
GB1838638A Expired GB516529A (en) | 1938-06-22 | 1938-06-21 | Improvements in or relating to electric circuit-breaking devices of the gas-blast type |
GB1854838A Expired GB516238A (en) | 1938-06-22 | 1938-06-22 | Improvements in or relating to electric circuit-breaking devices of the gas-blast type |
Family Applications Before (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1939038A Expired GB516532A (en) | 1938-06-22 | 1938-06-21 | Improvements in or relating to electric circuit-breaking devices of the gas-blast type |
GB1838938A Expired GB516531A (en) | 1938-06-22 | 1938-06-21 | Improvements in or relating to electric circuit-breakers of the air-blast or gas-blast type |
GB1838738A Expired GB516530A (en) | 1938-06-22 | 1938-06-21 | Improvements in or relating to electric circuit-breaking devices of the gas-blast type |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1854838A Expired GB516238A (en) | 1938-06-22 | 1938-06-22 | Improvements in or relating to electric circuit-breaking devices of the gas-blast type |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR856708A (en) |
GB (5) | GB516532A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2653204A (en) * | 1949-01-27 | 1953-09-22 | Asea Ab | Equalizing device for air current in air blast circuit breakers |
US3221129A (en) * | 1960-04-29 | 1965-11-30 | Reyrolle A & Co Ltd | Gas-blast circuit breaker of the recirculating gas type |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE884381C (en) * | 1940-09-28 | 1953-07-27 | Aeg | Electric circuit breaker |
US2422784A (en) * | 1944-09-30 | 1947-06-24 | Ite Circuit Breaker Ltd | Circuit breaker |
FR1168741A (en) * | 1957-03-01 | 1958-12-15 | Further training in circuit breakers | |
CH524886A (en) * | 1970-12-01 | 1972-06-30 | Bbc Brown Boveri & Cie | Electric compression switch |
DE2910495C2 (en) * | 1978-03-18 | 1986-08-28 | Mitsubishi Denki K.K., Tokio/Tokyo | Electric circuit breaker |
EP0035581B1 (en) * | 1980-03-10 | 1983-11-16 | Sprecher & Schuh AG | Gas-blast circuit breaker |
GB2332566B (en) * | 1997-12-19 | 2001-09-19 | Rolls Royce Power Eng | Electrical circuit breaker |
-
1938
- 1938-06-21 GB GB1939038A patent/GB516532A/en not_active Expired
- 1938-06-21 GB GB1838938A patent/GB516531A/en not_active Expired
- 1938-06-21 GB GB1838738A patent/GB516530A/en not_active Expired
- 1938-06-21 GB GB1838638A patent/GB516529A/en not_active Expired
- 1938-06-22 GB GB1854838A patent/GB516238A/en not_active Expired
-
1939
- 1939-06-21 FR FR856708D patent/FR856708A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2653204A (en) * | 1949-01-27 | 1953-09-22 | Asea Ab | Equalizing device for air current in air blast circuit breakers |
US3221129A (en) * | 1960-04-29 | 1965-11-30 | Reyrolle A & Co Ltd | Gas-blast circuit breaker of the recirculating gas type |
Also Published As
Publication number | Publication date |
---|---|
GB516238A (en) | 1939-12-28 |
GB516530A (en) | 1940-01-04 |
GB516531A (en) | 1940-01-04 |
GB516532A (en) | 1940-01-04 |
FR856708A (en) | 1940-08-10 |
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