GB1413932A - Method and apparatus for controlling the liquid level above a solid bed - Google Patents

Method and apparatus for controlling the liquid level above a solid bed

Info

Publication number
GB1413932A
GB1413932A GB572174A GB572174A GB1413932A GB 1413932 A GB1413932 A GB 1413932A GB 572174 A GB572174 A GB 572174A GB 572174 A GB572174 A GB 572174A GB 1413932 A GB1413932 A GB 1413932A
Authority
GB
United Kingdom
Prior art keywords
pipe
liquid
bed
bed surface
feb
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.)
Expired
Application number
GB572174A
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.)
Industrial Filter and Pump Manufacturing Co
Original Assignee
Industrial Filter and Pump Manufacturing Co
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
Priority claimed from DE19732306210 external-priority patent/DE2306210C2/en
Application filed by Industrial Filter and Pump Manufacturing Co filed Critical Industrial Filter and Pump Manufacturing Co
Publication of GB1413932A publication Critical patent/GB1413932A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
    • G05D9/04—Level control, e.g. controlling quantity of material stored in vessel with auxiliary non-electric power
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
    • G01F23/16—Indicating, recording, or alarm devices being actuated by mechanical or fluid means, e.g. using gas, mercury, or a diaphragm as transmitting element, or by a column of liquid
    • G01F23/165—Indicating, recording, or alarm devices being actuated by mechanical or fluid means, e.g. using gas, mercury, or a diaphragm as transmitting element, or by a column of liquid of bubbler type
    • G01F23/167—Indicating, recording, or alarm devices being actuated by mechanical or fluid means, e.g. using gas, mercury, or a diaphragm as transmitting element, or by a column of liquid of bubbler type with mechanic or fluid indicating or recording
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
    • G05D9/12—Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Fluid Mechanics (AREA)
  • Power Engineering (AREA)
  • Control Of Non-Electrical Variables (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

1413932 Fluid pressure servomotor systems INDUSTRIAL FILTER & PUMP Mfg CO 7 Feb 1974 [8 Feb 1973] 05721/74 Heading G3P The head of liquid 5 above a solid bed 2 of material which may vary in volume, e.g. an ion exchange resin, is maintained constant by feeding liquid to tank 4 containing the bed when the pressure differential between locations adjacent the bed surface 3 and above liquid 5 falls below a predetermined amount. The respective pressures are sensed by a pipe 9 disposed above liquid 5 and by a pipe 11 immersed in the latter and having a nozzle 12 opening adjacent bed surface 3. Pipe 11 is carried by a float 13 guided vertically on rod 14 and constructed such that it normally rests on bed surface 3. Pipe 11 is connected by flexible hose 10 to a pipe 8 supplied with a constant gas flow through pipe 15. Pipes 8, 9 are connected to differential pressure sensor 7 which transmits a pneumatic signal to regulator 16 controlling pneumatic valve 17 in the liquid feed line 18. To prevent float 13 from settling into bed 2 during extreme operating conditions, a timing relay 19 periodically interrupts the pneumatic control system by operation of a three-way valve 20 which causes pressurized air from line 21 to fully open valve 17 so that the level of liquid 5 rises to a higher than normal value.
GB572174A 1973-02-08 1974-02-07 Method and apparatus for controlling the liquid level above a solid bed Expired GB1413932A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732306210 DE2306210C2 (en) 1973-02-08 Apparatus and method for maintaining a low liquid level above a height-adjustable bed of an ion exchanger

Publications (1)

Publication Number Publication Date
GB1413932A true GB1413932A (en) 1975-11-12

Family

ID=5871349

Family Applications (1)

Application Number Title Priority Date Filing Date
GB572174A Expired GB1413932A (en) 1973-02-08 1974-02-07 Method and apparatus for controlling the liquid level above a solid bed

Country Status (2)

Country Link
FR (1) FR2217743B3 (en)
GB (1) GB1413932A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2098860C (en) * 1992-07-06 1997-03-25 John Mchardy Method and apparatus for detecting the position of liquid-liquid interfaces
CN113951112A (en) * 2021-11-16 2022-01-21 山东科翔软件科技有限公司 Self-propelled mobile irrigation equipment and irrigation control system thereof

Also Published As

Publication number Publication date
FR2217743B3 (en) 1976-11-26
DE2306210A1 (en) 1974-08-15
DE2306210B1 (en) 1974-08-15
FR2217743A1 (en) 1974-09-06

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee