GB270743A - Improvements in apparatus for the expansion of steam - Google Patents
Improvements in apparatus for the expansion of steamInfo
- Publication number
- GB270743A GB270743A GB12213/27A GB1221327A GB270743A GB 270743 A GB270743 A GB 270743A GB 12213/27 A GB12213/27 A GB 12213/27A GB 1221327 A GB1221327 A GB 1221327A GB 270743 A GB270743 A GB 270743A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valves
- series
- coupled
- close
- smaller
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/04—Control of fluid pressure without auxiliary power
- G05D16/0404—Control of fluid pressure without auxiliary power with two or more controllers mounted in parallel
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/14—Control of fluid pressure with auxiliary non-electric power
- G05D16/18—Control of fluid pressure with auxiliary non-electric power derived from an external source
- G05D16/187—Control of fluid pressure with auxiliary non-electric power derived from an external source using pistons within the main valve
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Power Engineering (AREA)
- Safety Valves (AREA)
- Control Of Turbines (AREA)
Abstract
270,743. Akt.-Ges. Brown, Boveri, et Cie. May 7, 1926, [Convention date]. Pressure-regulating valves.- A reducing valve device is provided with a series of closure members of increasing cross sectional area so arranged that at any given time only one of the closures is in operation while the preceding smaller one and the succeeding larger one are closed. In the form shown in the Figure, three valves 5, 7 and 11 are arranged in parallel on the conduit 30 and are actuated by hydraulic pressure admitted through a pipe 23 acting on spring loaded pistons 18, 19 and 20, and controlled by a pressure regulator. Each of the valves 7, 11 is coupled to an auxiliary valve 21 so arranged that as each of the smaller valves reaches its full open position its actuating supply is interrupted to permit it to close, and transfer its duty to the next larger valve. The valves may be coupled by a series of cams arranged to open and close the valves in the required sequence. The invention may be applied to safety valves.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE270743X | 1926-05-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB270743A true GB270743A (en) | 1927-09-08 |
Family
ID=6001789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12213/27A Expired GB270743A (en) | 1926-05-07 | 1927-05-06 | Improvements in apparatus for the expansion of steam |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB270743A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2784738A (en) * | 1952-01-15 | 1957-03-12 | Jr Adolph E Thurber | Valves for controlling the operation of hydraulic elevators |
-
1927
- 1927-05-06 GB GB12213/27A patent/GB270743A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2784738A (en) * | 1952-01-15 | 1957-03-12 | Jr Adolph E Thurber | Valves for controlling the operation of hydraulic elevators |
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