[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

JPS5756688A - Flow rate controller - Google Patents

Flow rate controller

Info

Publication number
JPS5756688A
JPS5756688A JP13151080A JP13151080A JPS5756688A JP S5756688 A JPS5756688 A JP S5756688A JP 13151080 A JP13151080 A JP 13151080A JP 13151080 A JP13151080 A JP 13151080A JP S5756688 A JPS5756688 A JP S5756688A
Authority
JP
Japan
Prior art keywords
valve
flow rate
motor
opening
setter
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
JP13151080A
Other languages
Japanese (ja)
Inventor
Koji Kuwabara
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP13151080A priority Critical patent/JPS5756688A/en
Publication of JPS5756688A publication Critical patent/JPS5756688A/en
Pending legal-status Critical Current

Links

Landscapes

  • Regulation And Control Of Combustion (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

PURPOSE: To minimize an increasing flow rate caused by an increase of a motor's revolution speed in a forced ventilator or the like of a boiler when it fails to work by temporarly fixing an opening of a valve in response to an output of a valve opening setter to forcedly close the valve to its indicated degree.
CONSTITUTION: A valve opening setter 21 is a function generator which receives an input of a signal of a required flow rate setter 10 and outputs an opening of a valve 1 required for providing a preset flow rate when a pump 2 drives to a rating speed. When a motor revolution speed controller 5 fails to work, a power supply of a motor 3 is switched to a commercial power supply so that a revolution speed of the motor 3 increases. Once an output is switched from a valve opening controller 14 to the valve opening setter 21, the indicated valve opening value of a valve 1 is instantaneously reduced and the valve 1 is abruptly choked so that a flow rate may be prevented from increasing. That is, the moment a trouble occurs, an indication of closing the valve 1 is dispatched to forcedly choke it to a preset opening so that an increase of a flow rate caused by an increasing revolution speed of the motor may be inhibited to a minimum for stable flow control.
COPYRIGHT: (C)1982,JPO&Japio
JP13151080A 1980-09-24 1980-09-24 Flow rate controller Pending JPS5756688A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13151080A JPS5756688A (en) 1980-09-24 1980-09-24 Flow rate controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13151080A JPS5756688A (en) 1980-09-24 1980-09-24 Flow rate controller

Publications (1)

Publication Number Publication Date
JPS5756688A true JPS5756688A (en) 1982-04-05

Family

ID=15059714

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13151080A Pending JPS5756688A (en) 1980-09-24 1980-09-24 Flow rate controller

Country Status (1)

Country Link
JP (1) JPS5756688A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59161614A (en) * 1983-03-04 1984-09-12 Mitsubishi Heavy Ind Ltd Vvvf controller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59161614A (en) * 1983-03-04 1984-09-12 Mitsubishi Heavy Ind Ltd Vvvf controller

Similar Documents

Publication Publication Date Title
JPS5399103A (en) Boiler feed water pump controller
JPS57126572A (en) Operation controlling method for water wheel and pump water wheel
JPS5756688A (en) Flow rate controller
JPS5246203A (en) Method of controlling feed-water pumps for power genration plant
JPS5716207A (en) Feed water turbine pump controller
JPS56164202A (en) Fluidic device
JPS56106086A (en) Controlling device for flow rate of feed water
JPS5471203A (en) Feed water flow and feed water pressure control device at transformer operation plant
JPS5625616A (en) Inner furnace pressure control system for boiler equipment
JPS5513601A (en) Speed controller with automatic overload regulation circuit for blower or the like
JPS5660806A (en) Regulator valve opening controller
JPS5496609A (en) Spray controller of turbin exhaust chamber
JPS54121341A (en) Controlling of load limiter
JPS56118572A (en) Method of controlling tandem system pumping-up power plant
JPS53120001A (en) Turbine control device
JPS5756690A (en) Parallel operation of pump
JPS5738608A (en) Emergency generator
JPS52134930A (en) Air flow rate regulator
JPS55123097A (en) Controller for preventing water hammering
JPS5490404A (en) Feed water flow rate controller
JPS5635201A (en) Rush flow preventing device
JPS57210106A (en) Controller for turbine
JPS56146077A (en) Operation of hydraulic turbine
JPS56126605A (en) Turbine controller
JPS5752604A (en) Turbine bypass control device