GB337686A - Improvements in or relating to valves for steam conduits and the like - Google Patents
Improvements in or relating to valves for steam conduits and the likeInfo
- Publication number
- GB337686A GB337686A GB146530A GB146530A GB337686A GB 337686 A GB337686 A GB 337686A GB 146530 A GB146530 A GB 146530A GB 146530 A GB146530 A GB 146530A GB 337686 A GB337686 A GB 337686A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vessel
- valve
- lever
- pipe
- closing
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/32—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting on a servo-mechanism or on a catch-releasing mechanism
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Turbines (AREA)
Abstract
337,686. Elektrowerke Akt.-Ges., and Krõmer, B. Jan. 15, 1930. Valves actuated by vessels receiving and discharging liquids.-Relates to a rotary plug valve for steam conduits of the kind supported by coaxial trunnions 13 in ball or roller bearings 14, and having slightly-spaced closure surfaces so as to obtain a rapid, though incomplete, closing of the conduit, the casing and plug passages 10, 15 forming together a Venturi passage. In this valve arrangement the pressure difference at two points 31, 35 of the Venturi passage is utilized for closing the valve rapidly in case of pipe fracture. For this purpose the point 31 at the large cross-section is connected by a pipe 30 to a vessel 27 containing mercury &c., and the point 35 at the throat of the passage, is connected to a vessel 28 suspended on a lever 29 and counterweighted at 39. In the event of excess fluid flow, caused, for example, by pipe fracture, the consequent reduction of pressure in the vessel 28 allows mercury to pass from vessel 27 to vessel 28, which consequently falls. This action, through the lever 29 and cord 41, withdraws a catch bolt 23 and releases a weighted arm 25 secured to the spindle of the valve, which is thereupon closed, the closed position being located by a stop 26 on the valve casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB146530A GB337686A (en) | 1930-01-15 | 1930-01-15 | Improvements in or relating to valves for steam conduits and the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB146530A GB337686A (en) | 1930-01-15 | 1930-01-15 | Improvements in or relating to valves for steam conduits and the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB337686A true GB337686A (en) | 1930-11-06 |
Family
ID=9722449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB146530A Expired GB337686A (en) | 1930-01-15 | 1930-01-15 | Improvements in or relating to valves for steam conduits and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB337686A (en) |
-
1930
- 1930-01-15 GB GB146530A patent/GB337686A/en not_active Expired
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