GB502218A - Improvements in or relating to high-lift safety valves for steam boilers - Google Patents
Improvements in or relating to high-lift safety valves for steam boilersInfo
- Publication number
- GB502218A GB502218A GB11411/38A GB1141138A GB502218A GB 502218 A GB502218 A GB 502218A GB 11411/38 A GB11411/38 A GB 11411/38A GB 1141138 A GB1141138 A GB 1141138A GB 502218 A GB502218 A GB 502218A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- pressure
- bore
- valve
- spring
- 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
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/08—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for providing a large discharge passage
Abstract
502,218. Safety valves. KNORRBREMSE AKT.-GES. April 13, 1938, No. 11411. Convention date, May 3. 1937. Addition to 492,878. [Class 135] In the high-lift safety valve for steam boilers claimed in the parent Specification, the valve e in the controlling device c is maintained closed by the greater strength of its closing spring g over that of its opening spring i until after a certain lapse of time a steam pressure is built up in a chamber c<1> surrounding the spring g sufficient to overcome the resistance of the latter. The springs g, i are enclosed in bellows p, h respectively. The chamber c<1> communicates by a small bore o less than the bore of the pipe b with a chamber k which, when the valve c opens, connects the pipes b, f leading to the huddling chamber and the counter pressure chamber of the safety valve respectively. The size of the bore o and of the bellows p are chosen so that the time required for the pressure to build up to the necessary value in the chamber c<1> corresponds to that required for the pressure in the huddling chamber to fall to the desired value.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE502218X | 1937-05-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB502218A true GB502218A (en) | 1939-03-14 |
Family
ID=6545864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11411/38A Expired GB502218A (en) | 1937-05-03 | 1938-04-13 | Improvements in or relating to high-lift safety valves for steam boilers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB502218A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3212769A (en) * | 1961-10-25 | 1965-10-19 | Bridgestone Tire Co Ltd | Air cushion suspension device with variable throttling means |
-
1938
- 1938-04-13 GB GB11411/38A patent/GB502218A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3212769A (en) * | 1961-10-25 | 1965-10-19 | Bridgestone Tire Co Ltd | Air cushion suspension device with variable throttling means |
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