GB540321A - Improvements in or relating to apparatus actuated by or controlling fluid under pressure - Google Patents
Improvements in or relating to apparatus actuated by or controlling fluid under pressureInfo
- Publication number
- GB540321A GB540321A GB859240A GB859240A GB540321A GB 540321 A GB540321 A GB 540321A GB 859240 A GB859240 A GB 859240A GB 859240 A GB859240 A GB 859240A GB 540321 A GB540321 A GB 540321A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- piston
- control
- pressure
- air
- 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
- H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
- H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
- H01H33/32—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator pneumatic
Landscapes
- Safety Valves (AREA)
Abstract
540,321. Fluid-actuated valves. ENGLISH ELECTRIC CO., Ltd., BLANDFORD, A. R., and ROWLAND, F. G. May 13, 1940, No. 8592. [Class 135] A valve device particularly applicable to the control of the compressed air operation of electric switch gear such as air-blast circuit breakers or a combination of such a circuit-breaker with an isolating switch and actuated by the application of fluid pressure to a piston or the like is provided with means whereby fluid pressure is permitted to leak to the back of the piston when the valve is open and so facilitate its closure. In the arrangement shown compressed air from a reservoir 1 passes to an outlet conduit 4 when a valve 2 is opened against the action of a spring 8 by the admission of fluid pressure from the reservoir to the upper side of the piston 7 under the control of the valve (not shown). When the valve 2 is open air leaks through apertures 10, which may be adjustably throttled, to the underside of the piston to build up a pressure to assist the spring 8 in closing the valve 2 when the control valve is operated to connect the control conduit 9 to atmosphere. An auxiliary piston 11 subject to the pressure in the outlet chamber 3, may after a pre-determined interval, act either mechanically or through air pressure or electromagnetic means to actuate the same or a second control valve to initiate the reclosing of the main valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB859240A GB540321A (en) | 1940-05-13 | 1940-05-13 | Improvements in or relating to apparatus actuated by or controlling fluid under pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB859240A GB540321A (en) | 1940-05-13 | 1940-05-13 | Improvements in or relating to apparatus actuated by or controlling fluid under pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB540321A true GB540321A (en) | 1941-10-13 |
Family
ID=9855449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB859240A Expired GB540321A (en) | 1940-05-13 | 1940-05-13 | Improvements in or relating to apparatus actuated by or controlling fluid under pressure |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB540321A (en) |
-
1940
- 1940-05-13 GB GB859240A patent/GB540321A/en not_active Expired
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