GB516238A - 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
- GB516238A GB516238A GB1854838A GB1854838A GB516238A GB 516238 A GB516238 A GB 516238A GB 1854838 A GB1854838 A GB 1854838A GB 1854838 A GB1854838 A GB 1854838A GB 516238 A GB516238 A GB 516238A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contact
- enclosure
- gas
- arc
- vents
- 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
516,238. Gas-blast switches. REYROLLE & CO., Ltd., A., COATES, F., LEESON, B. H., and ALLAN, A. June 22, 1938, Nos. 18548/38, and 16269/39. [Class 38 (v)] In a gas-blast switch in which the arc is drawn out within an enclosure past one or more lateral vents in the wall thereof, and a second arc in series with the main arc sets up a pressure which forces the blast through the arc and out from the enclosure through the vents, a member constituted by one of the relatively movable contact-members of the main break, or by a part associated therewith is arranged to act as a valve for controlling the blast. The generation of the blast may be aided by disposing in proximity to the series arc, fibre, boron, or other insulating material which gives off gas when acted upon by the arc. Preferably the vent throats are so small, and the arc is drawn in such close proximity thereto, that all the gas discharged through the vents must pass through the arc path. The positioning of the arc may be assisted by magnetic inserts in the enclosure body and by placing the main and series breaks so as to form a current loop acting electrodynamically on the main arc. as well as by arranging the arcing tips against the vents, and by providing in the enclosure a narrow slot from which the vents extend. The movable main or series contact may be withdrawn completely from the enclosure into insulating liquid or clean gas, or the enclosure may be placed in a pressure-gas casing and the discharge led directly by way of a contactoperated valve to the outside. In Fig. 1, the main fixed and movable rod contact A, C separate in an enclosure B in an insulating structure comprising blocks B' secured together by lateral bolts B<2> and having registering grooves cut in their engaging faces to form lateral vents B' and a port, or ports, B' to which is connected the gas - supply pipe B<5> from the adjacent chamber E containing the series-break E<1>, E<3>. The contacts C, E<3> are electrically connected through sliding contacts C<3>, E<5> and plate C<1> and are insulated at C<4>, E<6> from the operating mechanism, which comprises pivoted cranks F<1>, F<2>, links F<5>, F<6>, and a link F', the arrangement being such that the series break opens first and a valve B<6> is opened at once to admit the gas-pressure to the enclosure B. The blast is controlled by the contact C acting as a valve which initially closes the vents B<3> and port B'. The vents may be radially arranged with respect to the arc, or they may be offset and straight or curved so as to discharge on either side of the central plane of the ports and vent throats. In Fig. 2, the enclosure B and chamber E are in the same structure in which the pipe B<@> is formed as a duct. The rod E' is lowered by the operating mechanism to draw the series arc and when adequate pressure is developed, the movable contact G is raised by means of its piston G' against the action of spring G<3>, and acts as a valve to control the blast through the vents B<3>. In Fig. 3 the vents H<2> and ports H' are formed by slots in alternate plates H of a stack, and the valve is formed by a separate member H<5> operated by a spring H<6> and normally held closed by a projection H' on the movable contact C. The ports H' communicate with the supply pipe B<5> over a passage H' formed by aligned holes in the stack, no valve B<6> being provided. This arrangement may be modified, Fig. 4 (not shown), by dispensing with the ports and admitting the blast into the enclosure through a hollow movable contact which acts as the valve and is apertured so as to communicate with a container which surrounds the contact C' and receives the end of the gas-supply pipe from the series break. The aperture is normally closed but opens at the moment the contact moves. This arrangement may be modified by maintaining communication between the pipe and hollow contact and placing a depending plug in the enclosure so as to close the hollow contact when the breaker is closed. In Fig. 6, the enclosure B and chamber E are in the same structure, as in Fig. 2, and a further isolating gap L', L<2> is provided in an adjacent chamber L and operated so as to open after the series and main breaks. The main break is effected by movement of the insulating structure, the contact G of the main break being fixed to the top plate of the casing D. This movement is effected by a rod K and lever K' from a yoke K<2> operated by a cam K<3> on the shaft F' which carries the crank arm F<1> operating the contact E'. Blast-control is effected by a valve K<4> which is placed in the duct B<5> and fixed to the top plate of casing D so as to be opened by downward movement of the structure. The chamber L may contain liquid or compressed gas, such as air, nitrogen, carbon dioxide, argon, or difluoro-dichloro-methane, or other fluorinated alkyl chloride. In Fig. 7, the main contacts N, A separate in a structure comprising an insulating tube M, with a lateral opening M', and one or more annular insulating plates M<2> closely surrounding the movable contact and provided with a passage M<3> co-operating with the opening M' and a gas-inlet passage M' leading into a space M'. Contact N carries a piston N<3> which slides in a cylinder N<2> in metal casing N<1> and is normally urged upwards by a spring N' to bring a surface N<5> thereon against a valve-seating N" and shut off the enclosure B. A stop N<7> limits the downward movement of N to the position shown, which is the most favourable for arc-extinction, and an extension of the contact engages a ring contact N<8>. The cylinder N<2> communicates with an insulating casing O in which is supported by brackets O<6> a further insulating chamber O<1> in which the series break occurs between O<2>, O<3>. The chamber O is closed by the extension O<5>. The movable contact O<3> passes through a ring contact O<4> to provide an adequate isolating gap. Instead of being operated by the gas-pressure, the contact N may be mechanically operated to separate after the series break, Fig. 8 (not shown). The casing D may have discharge outlets opposite the vents and leading into a surrounding casing, the discharge-part of which is separated from upper and lower parts containing compressed gas, insulating compound, or pulverulent solid insulations such as magnesia.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1838638A GB516529A (en) | 1938-06-22 | 1938-06-21 | Improvements in or relating to electric circuit-breaking devices of the gas-blast type |
GB1939038A GB516532A (en) | 1938-06-22 | 1938-06-21 | Improvements in or relating to electric circuit-breaking devices of the gas-blast type |
GB1838738A GB516530A (en) | 1938-06-22 | 1938-06-21 | Improvements in or relating to electric circuit-breaking devices of the gas-blast type |
GB1838938A GB516531A (en) | 1938-06-22 | 1938-06-21 | Improvements in or relating to electric circuit-breakers of the air-blast or gas-blast type |
GB1854838A GB516238A (en) | 1938-06-22 | 1938-06-22 | Improvements in or relating to electric circuit-breaking devices of the gas-blast type |
FR856708D FR856708A (en) | 1938-06-22 | 1939-06-21 | Improvements to electric switch devices of the blown gas type |
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 |
---|---|
GB516238A true GB516238A (en) | 1939-12-28 |
Family
ID=10114316
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1838738A Expired GB516530A (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 |
GB1838638A Expired GB516529A (en) | 1938-06-22 | 1938-06-21 | Improvements in or relating to electric circuit-breaking devices of the gas-blast type |
GB1939038A Expired GB516532A (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 (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1838738A Expired GB516530A (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 |
GB1838638A Expired GB516529A (en) | 1938-06-22 | 1938-06-21 | Improvements in or relating to electric circuit-breaking devices of the gas-blast type |
GB1939038A Expired GB516532A (en) | 1938-06-22 | 1938-06-21 | 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) | GB516530A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2422784A (en) * | 1944-09-30 | 1947-06-24 | Ite Circuit Breaker Ltd | Circuit breaker |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE884381C (en) * | 1940-09-28 | 1953-07-27 | Aeg | Electric circuit breaker |
US2653204A (en) * | 1949-01-27 | 1953-09-22 | Asea Ab | Equalizing device for air current in air blast circuit breakers |
FR1168741A (en) * | 1957-03-01 | 1958-12-15 | Further training in circuit breakers | |
GB979783A (en) * | 1960-04-29 | 1965-01-06 | Reyrolle A & Co Ltd | Improvements relating to high-voltage electric circuit-breakers of the gas-blast type |
CH524886A (en) * | 1970-12-01 | 1972-06-30 | Bbc Brown Boveri & Cie | Electric compression switch |
CH645756A5 (en) * | 1978-03-18 | 1984-10-15 | Mitsubishi Electric Corp | DEVICE FOR CLEARING THE ELECTRIC ARC RESULTING FROM SWITCHING. |
ATE5358T1 (en) * | 1980-03-10 | 1983-12-15 | Sprecher & Schuh Ag | GAS SWITCH. |
GB2332566B (en) * | 1997-12-19 | 2001-09-19 | Rolls Royce Power Eng | Electrical circuit breaker |
-
1938
- 1938-06-21 GB GB1838738A patent/GB516530A/en not_active Expired
- 1938-06-21 GB GB1838938A patent/GB516531A/en not_active Expired
- 1938-06-21 GB GB1838638A patent/GB516529A/en not_active Expired
- 1938-06-21 GB GB1939038A patent/GB516532A/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 (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2422784A (en) * | 1944-09-30 | 1947-06-24 | Ite Circuit Breaker Ltd | Circuit breaker |
Also Published As
Publication number | Publication date |
---|---|
GB516531A (en) | 1940-01-04 |
GB516529A (en) | 1940-01-04 |
GB516532A (en) | 1940-01-04 |
FR856708A (en) | 1940-08-10 |
GB516530A (en) | 1940-01-04 |
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