JPS57120781A - Control valve - Google Patents

Control valve

Info

Publication number
JPS57120781A
JPS57120781A JP752081A JP752081A JPS57120781A JP S57120781 A JPS57120781 A JP S57120781A JP 752081 A JP752081 A JP 752081A JP 752081 A JP752081 A JP 752081A JP S57120781 A JPS57120781 A JP S57120781A
Authority
JP
Japan
Prior art keywords
pressure
chamber
set value
supplied
follower
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
JP752081A
Other languages
Japanese (ja)
Inventor
Eiichi Morozumi
Tadashi Kojima
Kentaro Inoue
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.)
Azbil Corp
Original Assignee
Azbil Corp
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 Azbil Corp filed Critical Azbil Corp
Priority to JP752081A priority Critical patent/JPS57120781A/en
Publication of JPS57120781A publication Critical patent/JPS57120781A/en
Pending legal-status Critical Current

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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
    • F16K31/40—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor

Abstract

PURPOSE:To exactly keep the flow rate of a fluid at a set value all the time by controlling the opening degree of a flow rate control valve according to the difference between a set value given from outside and the pressure of a fluid to be controlled. CONSTITUTION:When a drive signal is supplied from a drive circuit 9, a liquid inside a chamber 24 is supplied under pressure to a chamber 25 by an electromagnetic pump 22 to raise the internal pressure of the chamber 25, and a follower 27 perceives the rise of the pressure and goes down, whereupon a valve body 1 falls against a spring 7 to enlarge the opening area of a port 5. Also, when the pressure of the chamber 25 is lowered, the valve body 1 goes up, together with a follower 27, by the action of the spring 7 to reduce the opening area of the port 5. By this, the pressure of gas inside an outlet pathway 4 is controlled and detected by a pressure sensor 6. In a comparator 8, a set value outside is compared with the output signal of the sensor 6, a drive signal is supplied to an actuator 2.
JP752081A 1981-01-20 1981-01-20 Control valve Pending JPS57120781A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP752081A JPS57120781A (en) 1981-01-20 1981-01-20 Control valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP752081A JPS57120781A (en) 1981-01-20 1981-01-20 Control valve

Publications (1)

Publication Number Publication Date
JPS57120781A true JPS57120781A (en) 1982-07-27

Family

ID=11668045

Family Applications (1)

Application Number Title Priority Date Filing Date
JP752081A Pending JPS57120781A (en) 1981-01-20 1981-01-20 Control valve

Country Status (1)

Country Link
JP (1) JPS57120781A (en)

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