GB875256A - A pilot valve controlled pressure regulating valve - Google Patents
A pilot valve controlled pressure regulating valveInfo
- Publication number
- GB875256A GB875256A GB35853/57A GB3585357A GB875256A GB 875256 A GB875256 A GB 875256A GB 35853/57 A GB35853/57 A GB 35853/57A GB 3585357 A GB3585357 A GB 3585357A GB 875256 A GB875256 A GB 875256A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- servomotor
- piston
- spring
- fitted
- 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
- G05D23/00—Control of temperature
- G05D23/01—Control of temperature without auxiliary power
- G05D23/12—Control of temperature without auxiliary power with sensing element responsive to pressure or volume changes in a confined fluid
- G05D23/125—Control of temperature without auxiliary power with sensing element responsive to pressure or volume changes in a confined fluid the sensing element being placed outside a regulating fluid flow
-
- 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
- G05D16/16—Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid
- G05D16/166—Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid 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)
- Control Of Fluid Pressure (AREA)
- Temperature-Responsive Valves (AREA)
- Details Of Valves (AREA)
Abstract
875,256. Fluid-pressure servomotor control systems. CLAUSEN, M., [trading as DANFOSS VED INGENIOR MADS CLAUSEN]. Nov. 18, 1957 [Dec. 24, 1956], No. 35853/57. Class 135. A fluid-pressure servomotor control system for regulating the suction in a line 4, Fig. 1, from the evaporator of a refrigeration plant to maintain the temperature in the evaporator at a desired fixed value, comprises a pressureregulating valve 1, having a valve member 12, Fig. 2, connected by a rod 11 to a spring-loaded servomotor piston 7 and a spring-loaded pilot valve 2, adjustable to adjust the operating temperature, fitted in an equalizing pipe 3 connecting the line 4 to the space above the servomotor piston. Depending upon the suction in the line 4 the pilot valve 2 more or less opens to adjust the position of the servomotor piston 7 which has a restricted opening 16 therethrough to the valve outlet 15 to re-establish balance between the gas pressure in the plant and the servomotor loading spring. To prevent undue oscillating of the valve member 12 when the pressure difference on the two sides of the valve member is large, i.e. at small valve openings, a cylindrical part 18 having a radial distance between it and the valve seat sleeve 13 less than or equal to the axial length of the part 18 is fitted on the outlet face of the valve member. To further increase the effectiveness of the part 18, its outer end 20 may be coned. To avoid oscillations at low-pressure differences on the two sides of the valve member, a non-return valve comprising a leaf spring 21 may be fitted to open the outlet end 8 of the equalizing pipe 3 when the suction has attained a predetermined value. The leaf spring prevents mechanical oscillations of the servo-piston being fed back through the pipe 3 and restricts the space above the piston to avoid fluctuating gas pressures. The spring-loaded pilot valve 2 may be replaced by either thermostatically or electrically operated valves and may be fitted in the regulating valve housing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DED24584A DE1132770B (en) | 1956-12-24 | 1956-12-24 | Control valve with pilot control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB875256A true GB875256A (en) | 1961-08-16 |
Family
ID=7038235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB35853/57A Expired GB875256A (en) | 1956-12-24 | 1957-11-18 | A pilot valve controlled pressure regulating valve |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1132770B (en) |
| GB (1) | GB875256A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2233793A (en) * | 1989-07-10 | 1991-01-16 | Danfoss As | Servo-controlled expansion valve arrangements for a volatile fluid |
| CN110805703A (en) * | 2019-12-06 | 2020-02-18 | 北京比泽尔制冷设备有限公司 | Pressure regulating valve and refrigerating system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3676247D1 (en) * | 1985-01-29 | 1991-01-31 | Sun Hydraulics Corp | NORMALLY CLOSED LIQUID LOGICAL SWITCH. |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE392587C (en) * | 1923-04-01 | 1924-03-29 | Siller & Rodenkirchen G M B H | United suction and pressure valve for compressors |
| US1739584A (en) * | 1928-04-05 | 1929-12-17 | Westinghouse Air Brake Co | Angle-cock device |
| DE532353C (en) * | 1930-07-09 | 1931-08-27 | Moteurs Dugelay Soc D | Lamellar valve |
| DE596150C (en) * | 1931-08-30 | 1934-04-27 | Josef Menge | Time-limited flushing device that closes automatically by spring force |
| DE620122C (en) * | 1933-10-17 | 1935-10-14 | Walter Wagner Dr Ing | Flushing device |
| DE618880C (en) * | 1934-08-28 | 1935-09-18 | Triton Belco Akt Ges | Self-closing flushing valve for gases and liquids with adjustable volume delivery |
| DE661531C (en) * | 1936-08-04 | 1938-06-20 | Triton Belco Akt Ges | Flush valve |
| US2197320A (en) * | 1937-12-06 | 1940-04-16 | Frick Co | Electric control valve |
| US2291783A (en) * | 1939-03-11 | 1942-08-04 | Honeywell Regulator Co | Hydraulic valve |
| GB579526A (en) * | 1944-05-17 | 1946-08-07 | Avery Ltd W & T | Improvements in vibratory mechanism |
| US2610819A (en) * | 1944-09-04 | 1952-09-16 | Saunders Valve Co Ltd | Automatic stop and vent valve |
| US2524446A (en) * | 1946-08-24 | 1950-10-03 | Bailey Meter Co | Control apparatus |
| US2625953A (en) * | 1947-01-02 | 1953-01-20 | Hays Mfg Co | Self-closing valve |
| GB636363A (en) * | 1947-08-28 | 1950-04-26 | William Lawrence Ingram | Improvements in valves controlled by auxiliary or relay devices |
| DE854132C (en) * | 1949-03-12 | 1952-11-17 | Christian Buerkert | Electromagnetic shut-off valve |
-
1956
- 1956-12-24 DE DED24584A patent/DE1132770B/en active Pending
-
1957
- 1957-11-18 GB GB35853/57A patent/GB875256A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2233793A (en) * | 1989-07-10 | 1991-01-16 | Danfoss As | Servo-controlled expansion valve arrangements for a volatile fluid |
| GB2233793B (en) * | 1989-07-10 | 1993-07-07 | Danfoss As | Servo-controlled expansion valve arrangements for a volatile fluid |
| CN110805703A (en) * | 2019-12-06 | 2020-02-18 | 北京比泽尔制冷设备有限公司 | Pressure regulating valve and refrigerating system |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1132770B (en) | 1962-07-05 |
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