EP0832387A1 - Federbelasteter faltenbalgregler - Google Patents

Federbelasteter faltenbalgregler

Info

Publication number
EP0832387A1
EP0832387A1 EP96923547A EP96923547A EP0832387A1 EP 0832387 A1 EP0832387 A1 EP 0832387A1 EP 96923547 A EP96923547 A EP 96923547A EP 96923547 A EP96923547 A EP 96923547A EP 0832387 A1 EP0832387 A1 EP 0832387A1
Authority
EP
European Patent Office
Prior art keywords
regulator
poppet
spring
pressure
chamber
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.)
Withdrawn
Application number
EP96923547A
Other languages
English (en)
French (fr)
Other versions
EP0832387A4 (de
Inventor
Paul George Eidsmore
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Swagelok Co
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0832387A1 publication Critical patent/EP0832387A1/de
Publication of EP0832387A4 publication Critical patent/EP0832387A4/de
Withdrawn legal-status Critical Current

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
    • G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
    • G05D16/0616—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a bellow
    • G05D16/0619—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a bellow acting directly on the obturator

Definitions

  • This application relates to pressurized fluid systems and more particularly to an apparatus for regulating the pressure in the system.
  • the invention will be described with particular reference to a pressure regulator containing a spring loaded bellows assembly but it will be appreciated that selected aspects of the invention may have application in related fluid environments and uses.
  • FIGURE 1 is a longitudinal cross-sectional view of the new pressure regulator formed in accordance with the subject invention
  • FIGURE 2 is a longitudinal cross-sectional view of a modified regulator used as a back pressure regulator.
  • FIGURE 1 there is shown a preferred embodiment of the invention in which high pressure fluid enters inlet port A of body 19 and then continues on to the poppet chamber B.
  • the fluid's passage from chamber B to chamber C through the orifice 20 is controlled by the opening between the movable poppet 22 and the orifice seat 21. After the fluid enters chamber C, it exits the body 19 via the outlet port D.
  • the fluid pressure in chamber C acts against the movable bellows face plate 16, which is connected to the poppet stem 18, which extends through the orifice 20,
  • the poppet stem is, in turn, connected to the poppet 22.
  • the bellows face plate 16 is welded to a flexible bellows 15, which is welded to a bellows support collar 14.
  • the bellows support collar is welded to an upper housing 17, which is welded to a main body 19.
  • the pressure acting on the bellows face plate 16 is counteracted by a regulator spring 7 which pushes on the opposite side of the face plate.
  • a regulator spring 7 which pushes on the opposite side of the face plate.
  • the face plate yields to the greater force and moves upward, moving the poppet stem and poppet until the poppet seals against the poppet seat. Once the poppet engages the seat, further flow is stopped and a corresponding increase in pressure occurs.
  • the pressure in chamber C is reduced and the regulator spring force then exceeds the fluid force on the face plate. This causes the face plate, the poppet stem, and the poppet to move downward thereby opening the orifice passage and allowing flow to resume.
  • the pressure setting can be varied by adjusting the amount of regulator spring force. This is accomplished by turning adjusting knob 1 which is attached by set screw 2 to adjusting shaft 3. Threaded onto the adjusting shaft 3 is a spring compression nut 6 which is prevented from turning because its hex points slide in grooves machined into spring housing 5. Hence as the adjusting shaft rotates, the spring compression nut axially advances or retracts applying increased or decreased spring force on the back side of the bellows face plate 16.
  • the regulator has a mechanism for preventing oscillations or vibrations. This is accomplished by an O-ring 10 housed in an O-ring catch 9 that fits tight over a damper shaft 12. This arrangement exerts a slight resistance to movement of the bellows face plate 16 as it responds to rapid pressure changes.
  • the damper shaft 12 is provided with a taper so that just as the poppet is about to close, the O-ring's tight fit diminishes so as not to resist the sealing force necessary to stop all flow between the poppet 22 and the orifice seat 21.
  • This regulator assures that when the adjusting knob is turned to fully retract the spring compression nut, and therefore, all regulator spring force, the bellows face plate will move upward and the poppet will be urged to move tightly against the orifice seat.
  • a body base 23 Welded to the bottom of the main body 19 is a body base 23 which has an access port to service the poppet 22. This port is sealed by a gasket 24 being pressed against a seat by a set screw 25.
  • the poppet 22' is located in chamber C for sealing on the upper or opposite face of orifice 20'.
  • the assembly can be used as a back pressure regulator in which the port D becomes the inlet and the port A is the outlet.
  • the poppet stem 18' is of reduced length and the poppet 22' is inverted relative to the FIGURE l configuration to seal on the upper seat.
  • the pressure in the inlet D acts on the bellows and regulator spring to provide a predetermined pressure at which the poppet is lifted from the seat. This controls the fluid flow (and pressure) to the outlet A as desired with a back pressure regulator.
  • this embodiment is structurally and functionally identical to the FIGURE 1 embodiment.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Fluid Pressure (AREA)
  • Safety Valves (AREA)
EP96923547A 1995-07-03 1996-07-03 Federbelasteter faltenbalgregler Withdrawn EP0832387A4 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US85695P 1995-07-03 1995-07-03
US856P 1995-07-03
PCT/US1996/011101 WO1997002447A1 (en) 1995-07-03 1996-07-03 Spring loaded bellows regulator

Publications (2)

Publication Number Publication Date
EP0832387A1 true EP0832387A1 (de) 1998-04-01
EP0832387A4 EP0832387A4 (de) 1999-01-27

Family

ID=21693305

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96923547A Withdrawn EP0832387A4 (de) 1995-07-03 1996-07-03 Federbelasteter faltenbalgregler

Country Status (3)

Country Link
EP (1) EP0832387A4 (de)
JP (1) JP4138874B2 (de)
WO (1) WO1997002447A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5931809A (en) * 1995-07-14 1999-08-03 Depotech Corporation Epidural administration of therapeutic compounds with sustained rate of release
JP3556565B2 (ja) * 2000-04-14 2004-08-18 川重冷熱工業株式会社 高精度安全弁
CN108571486B (zh) * 2018-07-06 2021-08-06 江苏军源装备制造有限公司 一种用于工程机械负载敏感系统的插装阀

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2318721A (en) * 1941-01-11 1943-05-11 Union Carbide & Carbon Corp Fluid pressure regulator
DE916921C (de) * 1944-06-20 1954-08-19 Samson Appbau Aktien Ges Regelventil fuer UEber- und Unterdurck
US2770251A (en) * 1953-06-25 1956-11-13 Daniel And Florence Guggenheim Quick-acting reducing valve
EP0275931A2 (de) * 1987-01-21 1988-07-27 Hitachi, Ltd. Ausdehnungsventil
US4760862A (en) * 1986-02-17 1988-08-02 Ckd Kabushiki Kaisha Air pressure regulator
US5303734A (en) * 1993-02-01 1994-04-19 Eidsmore Paul G Pressure regulator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2912799A1 (de) * 1979-03-30 1980-10-09 Bosch Gmbh Robert Druckregelventil
US4424738A (en) * 1981-11-06 1984-01-10 Air-Dry Corporation Fluid controller with diaphragm and piston

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2318721A (en) * 1941-01-11 1943-05-11 Union Carbide & Carbon Corp Fluid pressure regulator
DE916921C (de) * 1944-06-20 1954-08-19 Samson Appbau Aktien Ges Regelventil fuer UEber- und Unterdurck
US2770251A (en) * 1953-06-25 1956-11-13 Daniel And Florence Guggenheim Quick-acting reducing valve
US4760862A (en) * 1986-02-17 1988-08-02 Ckd Kabushiki Kaisha Air pressure regulator
EP0275931A2 (de) * 1987-01-21 1988-07-27 Hitachi, Ltd. Ausdehnungsventil
US5303734A (en) * 1993-02-01 1994-04-19 Eidsmore Paul G Pressure regulator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9702447A1 *

Also Published As

Publication number Publication date
EP0832387A4 (de) 1999-01-27
JP4138874B2 (ja) 2008-08-27
WO1997002447A1 (en) 1997-01-23
JPH11508990A (ja) 1999-08-03

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