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JPS57146960A - Pressure setter - Google Patents

Pressure setter

Info

Publication number
JPS57146960A
JPS57146960A JP56029888A JP2988881A JPS57146960A JP S57146960 A JPS57146960 A JP S57146960A JP 56029888 A JP56029888 A JP 56029888A JP 2988881 A JP2988881 A JP 2988881A JP S57146960 A JPS57146960 A JP S57146960A
Authority
JP
Japan
Prior art keywords
pressure
output
valve
leak
section
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.)
Pending
Application number
JP56029888A
Other languages
Japanese (ja)
Inventor
Shozo Sakamoto
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56029888A priority Critical patent/JPS57146960A/en
Publication of JPS57146960A publication Critical patent/JPS57146960A/en
Pending 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
    • G05D16/0402—Control of fluid pressure without auxiliary power with two or more controllers mounted in series

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Abstract

PURPOSE:To set the output pressure with high accuracy by providing a leak device associated with a variable throttle mechanism at the output side of a pressure reducing device employing a valve and a valve seat thereby performing the fine adjusting of the output pressure. CONSTITUTION:A branch point 2 is provided at the output port of a reducing valve 1 where one is used as the output while the other is used as the leak and a variable throttle mechanism 3 is provided at the lead side. At first the supply pressure P is applied on the reducing valve 1 which will set the pressure near to the desired pressure P1. If the output pressure is too high, the throttle cross- section is enlarged by said mechanism 3 while when the output pressure is too low the throttle cross-section is reduced to vary the flow thus to perform the fine pressure adjuting and to set the desired pressure P1 accurately.
JP56029888A 1981-03-04 1981-03-04 Pressure setter Pending JPS57146960A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56029888A JPS57146960A (en) 1981-03-04 1981-03-04 Pressure setter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56029888A JPS57146960A (en) 1981-03-04 1981-03-04 Pressure setter

Publications (1)

Publication Number Publication Date
JPS57146960A true JPS57146960A (en) 1982-09-10

Family

ID=12288502

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56029888A Pending JPS57146960A (en) 1981-03-04 1981-03-04 Pressure setter

Country Status (1)

Country Link
JP (1) JPS57146960A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2570520A1 (en) * 1984-09-18 1986-03-21 Renault TWO-LEVEL PRESSURE REGULATING DEVICE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2570520A1 (en) * 1984-09-18 1986-03-21 Renault TWO-LEVEL PRESSURE REGULATING DEVICE
US4664137A (en) * 1984-09-18 1987-05-12 Regie Nationale Des Usines Renault Two-level pressure control device

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