SE8002300L - PRESSURE RELEASE VALVE DEVICE - Google Patents
PRESSURE RELEASE VALVE DEVICEInfo
- Publication number
- SE8002300L SE8002300L SE8002300A SE8002300A SE8002300L SE 8002300 L SE8002300 L SE 8002300L SE 8002300 A SE8002300 A SE 8002300A SE 8002300 A SE8002300 A SE 8002300A SE 8002300 L SE8002300 L SE 8002300L
- Authority
- SE
- Sweden
- Prior art keywords
- main valve
- orifice
- pilot valve
- valve
- bleed flow
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
- F15B11/042—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in"
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
- F15B11/044—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the return line, i.e. "meter out"
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Safety Valves (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
A hydraulic pressure relief circuit includes a main valve (14), a bleed flow orifice (18) to provide stability to the main valve, a pilot valve (20) having a differential area piston (30,32) and a damping orifice (46) in conjunction with an accumulator (44). System pressure is limited by opening the main valve and allowing fluid flow from the system back to tank. The main valve is controlled as a bleed flow servo wherein the pilot valve (20) meters the bleed flow from the bleed flow orifice (18) to tank, thereby controlling the opening of the main valve. Fluid flow through the damping orifice (46) in conjunction with the accumulator (44) acts on area (A1) of the pilot valve to provide damping forces acting on the pilot valve with both rising and falling system pressures, thereby limiting the maximum rate of pressure increase in the circuit (10). <IMAGE>
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/024,058 US4201052A (en) | 1979-03-26 | 1979-03-26 | Power transmission |
US06/117,933 US4285362A (en) | 1980-02-04 | 1980-02-04 | Power transmission |
Publications (2)
Publication Number | Publication Date |
---|---|
SE8002300L true SE8002300L (en) | 1980-09-27 |
SE436784B SE436784B (en) | 1985-01-21 |
Family
ID=26697982
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8002300A SE436784B (en) | 1979-03-26 | 1980-03-25 | PRESSURE LIMIT VALVE DEVICE FOR A HYDRAULIC CIRCUIT |
Country Status (6)
Country | Link |
---|---|
AU (1) | AU534468B2 (en) |
CA (1) | CA1130167A (en) |
DE (1) | DE3011233A1 (en) |
GB (1) | GB2047434B (en) |
IN (1) | IN154880B (en) |
SE (1) | SE436784B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE439342C (en) * | 1981-09-28 | 1996-11-18 | Bo Reiner Andersson | Valve device for controlling a linear or rotary hydraulic motor |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3083727A (en) * | 1961-06-30 | 1963-04-02 | Oilgear Co | Pilot operated balanced relief valve with accumulator |
US3578018A (en) * | 1969-04-18 | 1971-05-11 | Abex Corp | Rate of pressure rise limiting valve |
DE7715366U1 (en) * | 1977-05-14 | 1977-09-01 | Robert Bosch Gmbh, 7000 Stuttgart | PRESSURE REGULATING VALVE FOR HYDRAULIC SYSTEMS |
-
1980
- 1980-03-22 DE DE19803011233 patent/DE3011233A1/en active Granted
- 1980-03-25 CA CA348,364A patent/CA1130167A/en not_active Expired
- 1980-03-25 SE SE8002300A patent/SE436784B/en not_active IP Right Cessation
- 1980-03-25 GB GB8009961A patent/GB2047434B/en not_active Expired
- 1980-03-25 AU AU56825/80A patent/AU534468B2/en not_active Ceased
- 1980-09-02 IN IN1002/CAL/80A patent/IN154880B/en unknown
Also Published As
Publication number | Publication date |
---|---|
GB2047434A (en) | 1980-11-26 |
IN154880B (en) | 1984-12-22 |
SE436784B (en) | 1985-01-21 |
DE3011233C2 (en) | 1991-04-18 |
GB2047434B (en) | 1983-03-09 |
DE3011233A1 (en) | 1980-10-09 |
AU534468B2 (en) | 1984-02-02 |
AU5682580A (en) | 1980-10-02 |
CA1130167A (en) | 1982-08-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |
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