GB1359000A - Liquid level control apparatus - Google Patents

Liquid level control apparatus

Info

Publication number
GB1359000A
GB1359000A GB2942271A GB2942271A GB1359000A GB 1359000 A GB1359000 A GB 1359000A GB 2942271 A GB2942271 A GB 2942271A GB 2942271 A GB2942271 A GB 2942271A GB 1359000 A GB1359000 A GB 1359000A
Authority
GB
United Kingdom
Prior art keywords
pressure
bulb
vapour
duct
container
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
GB2942271A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB1359000A publication Critical patent/GB1359000A/en
Expired 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
    • 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
    • G05D9/02—Level control, e.g. controlling quantity of material stored in vessel without auxiliary power
    • 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
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/04—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by other properties of handled fluid before transfer
    • F17C2223/042—Localisation of the removal point
    • F17C2223/043—Localisation of the removal point in the gas
    • F17C2223/045—Localisation of the removal point in the gas with a dip tube
    • 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
    • F17C2223/04—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by other properties of handled fluid before transfer
    • F17C2223/042—Localisation of the removal point
    • F17C2223/046—Localisation of the removal point in the liquid
    • F17C2223/047—Localisation of the removal point in the liquid with a dip tube
    • 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
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/0408—Level of content in the vessel
    • 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
    • F17C2250/061—Level of content in the vessel

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

1359000 Fluid-pressure servomotor systems PHILIPS' GLOEILAMPENFABRIEKEN NV 23 June 1971 [26 June 1970] 29422/71 Heading G3P [Also in Divisions F2 and G1] Apparatus for maintaining the level of a liquefied gas, e.g. nitrogen, in a container 1 between upper and lower limits, the liquefied gas being supplied through siphon 2 from a storage container 3, has two vapour pressure bulbs 6, 7 positioned at the limits, each bulb containing a medium, e.g. nitrogen, under pressure which condenses at the temperature of the liquefied gas, the filling pressure of bulb 7 being for example seven atmospheres and that of bulb 6 four atmospheres, the pressure differential between bulbs 6 and 7 operating a first control valve 8 and, via a duct 19, a second control valve 21 by which the storage container 3 can be communicated either with a pressure vessel 31 or with a vapour outlet 5. If the level falls below bulb 7, excess pressure in duct 17 displaces piston member 9 upwards (as viewed in Fig.1) and, via duct 19, displaces piston member 22 to the left thus placing the vapour space of container 3 in communication with pressure vessel 31 such that liquefied gas is siphoned into container 1. When the level reaches bulb 7, the vapour therein condenses, but compression spring 20 shuts member 9 against seating 18 quickly so that there is enough residual pressure in duct 19 to keep piston member 22 to the left. When the level reaches bulb 6 the vapour therein condenses and spring 20 acts to open valve 8, and the vapour trapped in duct 19 condenses. Spring 33 then moves piston member 22 to the right thereby communicating container 3 with vapour outlet 5 so that no more liquid is siphoned into container 1. Only when the level again falls below bulb 7 will pressure build up in duct 19 to move piston member 22 to the left to recommence the cycle. To provide better sealing and particularly to avoid communication of pressure vessel 31 with outlet 5 during motion of the piston member 22, the members 9, 22 may be provided with O-ring seals as in Figs.2-5 (not shown), and in this case the pressure media may act directly on the faces of the piston members.
GB2942271A 1970-06-26 1971-06-23 Liquid level control apparatus Expired GB1359000A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7009420A NL7009420A (en) 1970-06-26 1970-06-26

Publications (1)

Publication Number Publication Date
GB1359000A true GB1359000A (en) 1974-07-03

Family

ID=19810421

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2942271A Expired GB1359000A (en) 1970-06-26 1971-06-23 Liquid level control apparatus

Country Status (9)

Country Link
US (1) US3845636A (en)
BE (1) BE769012A (en)
CA (1) CA940004A (en)
CH (1) CH531211A (en)
DE (1) DE2129870A1 (en)
FR (1) FR2099987A5 (en)
GB (1) GB1359000A (en)
NL (1) NL7009420A (en)
SE (1) SE365050B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129122A (en) * 1982-10-25 1984-05-10 British Gas Corp Fluid flow control system particularly for a gas holder

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4041725A (en) * 1976-03-04 1977-08-16 Galt Equipment Limited Control system for refrigeration unit
SE399753B (en) * 1976-06-01 1978-02-27 Aga Ab DEVICE FOR FILLING A LIQUID FROM A STORAGE CONTAINER TO A BOX
FR2394040A1 (en) * 1977-06-09 1979-01-05 Automatis Regul Appar Mes Et POWER SUPPLY FOR CRYOSTAT
DE2806829C3 (en) * 1978-02-17 1984-09-20 Deutsche Forschungs- Und Versuchsanstalt Fuer Luft- Und Raumfahrt E.V., 5000 Koeln Device for deep freezing of objects
US4475348A (en) * 1982-07-26 1984-10-09 Minnesota Valley Engineering, Inc. Method and apparatus for filling cryogenic liquid cylinders
DE3417055C2 (en) * 1984-05-09 1986-05-07 Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn Helium II phase separator
DE3530168C1 (en) * 1985-08-23 1986-12-18 Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn Adjustable helium II phase separator
JPS62200099A (en) * 1986-02-27 1987-09-03 Mitsubishi Electric Corp Very low temperature liquid supply system
JP2551067B2 (en) * 1987-12-26 1996-11-06 アイシン精機株式会社 Cooling system
FR2649451B1 (en) * 1989-07-05 1991-10-25 Europ Propulsion HIGH PRESSURE LIQUID ACCUMULATOR WITH REGULATED LIQUID LEVEL
US5215101A (en) * 1990-05-10 1993-06-01 Symbiosis Corporation Sharply angled kelly (Jacobs's) clamp
US5258004A (en) * 1991-04-04 1993-11-02 Symbiosis Corporation Double acting, dual pivot thoracoscopic surgical lung clamps
US20070095668A1 (en) * 2005-10-31 2007-05-03 Phillip Pendleton Liquid nitrogen level control system
US11402067B2 (en) 2018-12-28 2022-08-02 Chart Inc. Storage tank with pressure actuated fill termination assembly

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756765A (en) * 1954-06-01 1956-07-31 Machlett Lab Inc System for maintaining liquid level
US3049887A (en) * 1960-02-15 1962-08-21 Gen Dynamics Corp Liquid control device
US3151468A (en) * 1962-04-26 1964-10-06 Cryogenics Inc Liquid level control for cold traps
CH427869A (en) * 1964-10-28 1967-01-15 Max Planck Gesellschaft Refill device for low-boiling liquids

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129122A (en) * 1982-10-25 1984-05-10 British Gas Corp Fluid flow control system particularly for a gas holder

Also Published As

Publication number Publication date
CH531211A (en) 1972-11-30
BE769012A (en) 1971-12-24
SE365050B (en) 1974-03-11
NL7009420A (en) 1971-12-28
CA940004A (en) 1974-01-15
FR2099987A5 (en) 1972-03-17
US3845636A (en) 1974-11-05
DE2129870A1 (en) 1972-01-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees