JPS5670197A - Liquid level controller for evaporator - Google Patents

Liquid level controller for evaporator

Info

Publication number
JPS5670197A
JPS5670197A JP14646879A JP14646879A JPS5670197A JP S5670197 A JPS5670197 A JP S5670197A JP 14646879 A JP14646879 A JP 14646879A JP 14646879 A JP14646879 A JP 14646879A JP S5670197 A JPS5670197 A JP S5670197A
Authority
JP
Japan
Prior art keywords
liquid level
flowrate
evaporator
lpg
inlet
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.)
Granted
Application number
JP14646879A
Other languages
Japanese (ja)
Other versions
JPH0214598B2 (en
Inventor
Masahide Nomura
Yoshio Sato
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 JP14646879A priority Critical patent/JPS5670197A/en
Publication of JPS5670197A publication Critical patent/JPS5670197A/en
Publication of JPH0214598B2 publication Critical patent/JPH0214598B2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/021—Special adaptations of indicating, measuring, or monitoring equipment having the height as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/035—Propane butane, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0636—Flow or movement of content

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Control Of Non-Electrical Variables (AREA)

Abstract

PURPOSE:To accomplish a stable control of liquid level of an evaporator checking variations in the liquid flowrate at the inlet thereof during the quick load cutting operation by determining a set value of the liquid level thereof for an LPG gas supply plant in thermal generation plants based on the load of the evaporator. CONSTITUTION:A function generator 211 calculates a set value of an LPG liquid level LEVR of an evaporated based on LPG vapor flowrate Fcv3 at the outlet of the evaporator and a deviation LEVE is determined between this value and an LPG liquid level LEV with a subtractor 212. Then, a proportional integrator 213 calculates a signal Fcv1RM for correcting the set value of flowrate at the inlet of the evaporator to which the vapor flowrate Fcv3 is added with an adder 214 to calculate a demand signal Fcv1D for LPG flowrate at the inlet. A subtractor 215 determines a deviation between the demand signal and the liquid flowrate Fcv1 at the inlet to control a regulation valve CV1. This enables stable control of the liquid level during the quick load cutting operation.
JP14646879A 1979-11-14 1979-11-14 Liquid level controller for evaporator Granted JPS5670197A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14646879A JPS5670197A (en) 1979-11-14 1979-11-14 Liquid level controller for evaporator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14646879A JPS5670197A (en) 1979-11-14 1979-11-14 Liquid level controller for evaporator

Publications (2)

Publication Number Publication Date
JPS5670197A true JPS5670197A (en) 1981-06-11
JPH0214598B2 JPH0214598B2 (en) 1990-04-09

Family

ID=15408313

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14646879A Granted JPS5670197A (en) 1979-11-14 1979-11-14 Liquid level controller for evaporator

Country Status (1)

Country Link
JP (1) JPS5670197A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57154598A (en) * 1981-03-20 1982-09-24 Mitsubishi Heavy Ind Ltd Control method for drum level in evaporator
JPS5846300A (en) * 1981-09-11 1983-03-17 Kobe Steel Ltd Method of controlling gas flow in liquefied gas utilizing apparatus
JPH0429197Y2 (en) * 1988-10-13 1992-07-15

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57154598A (en) * 1981-03-20 1982-09-24 Mitsubishi Heavy Ind Ltd Control method for drum level in evaporator
JPH0117037B2 (en) * 1981-03-20 1989-03-28 Mitsubishi Jukogyo Kk
JPS5846300A (en) * 1981-09-11 1983-03-17 Kobe Steel Ltd Method of controlling gas flow in liquefied gas utilizing apparatus
JPH0429197Y2 (en) * 1988-10-13 1992-07-15

Also Published As

Publication number Publication date
JPH0214598B2 (en) 1990-04-09

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