US2237461A - Liquid level gauge equipment - Google Patents

Liquid level gauge equipment Download PDF

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Publication number
US2237461A
US2237461A US177793A US17779337A US2237461A US 2237461 A US2237461 A US 2237461A US 177793 A US177793 A US 177793A US 17779337 A US17779337 A US 17779337A US 2237461 A US2237461 A US 2237461A
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United States
Prior art keywords
tube
roof
tank
liquid level
level gauge
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Expired - Lifetime
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US177793A
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John J Tokheim
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Individual
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    • 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
    • G01F23/30—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 floats
    • G01F23/40—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 floats using bands or wires as transmission elements
    • G01F23/42—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 floats using bands or wires as transmission elements using mechanically actuated indicating means

Definitions

  • This invention relates to sealing means, and has generally in View to provide a simple, practical, efficient sealing means especially intended to substantially eliminate loss of vapor through a roof opening of a volatile liquid storage tank of the so-called pulsating or floating roof type in which the roof rises and falls with rise and fall of liquid in the tank and wherein a roof opening is provided to accommodate a tube containing liquid level indicating equipment.
  • Ill designates a liquid storage tank having a floating roof l8, 1. e., a roof which rises and falls with rise and fall of the level of the liquid in the tank.
  • the roof I8 is provided with oneor more air chambers or pontoons l9 by which the roof is caused to float on the liquid in the tank, and, in accordance with known practice, means 20 is provided to afford a vapor seal between the roof and the tank.
  • the roof I8 Through the roof I8, or through one of the pontoons thereof, is formed an opening, and extending through this opening to, or substantially to, the bottom of the tank, and above the roof to the highestmost position of the latter, is a pipe or tube II to accommodate suitable means for indicating the level of liquid in the tank Ill
  • the pipe or tube H is suitably vented to the atmosphere above the roof l8, as indicated at I3
  • the roof l8 is a provided with a tubular formation 2
  • is immaterial, inasmuch as said space is suitably sealed at its top as, for example, by a seal 25 between the cover 22 and. the top of the tubular formation 2
  • is suitably sealed at its top as, for example, by a seal 25 between the cover 22 and. the top of the tubular formation 2
  • a vapor seal for a device for measuring the liquid contents of a tank wherein the tank includes a vertically movable roof having an opening therein and the measuring device includes a vertically disposed fixed tube extending through said opening, said seal comprising a vertically disposed, open-ended tubular member carried by the roof and defining the opening therein, a lateral flange at the upper end of said tubular member, an intermediate, vertically disposed, open-ended tubular member surrounding said tube and vertically movable therealong, said intermediate tubular member being disposed within said roof-carried tubular member and being spaced therefrom to permit horizontal movement of the roof relative to said intermediate tubular member, a lateral flange at the upper end of said intermediate tubular member overlying the lateral flange of said first mentioned tubular member, packing means between said flanges, and packing means between said intermediate tubular member and said tube.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Description

April 8, 1941. J TOKHEiM 2,237,461
LIQUID LEVEL GAUGE EQUIPMENT Filed Doc. 2, 1937 zj ohn fl Toiiheim Patented Apr. 8, 1941 UNITED STATES PATENT OFFICE 1 Claim.
This invention relates to sealing means, and has generally in View to provide a simple, practical, efficient sealing means especially intended to substantially eliminate loss of vapor through a roof opening of a volatile liquid storage tank of the so-called pulsating or floating roof type in which the roof rises and falls with rise and fall of liquid in the tank and wherein a roof opening is provided to accommodate a tube containing liquid level indicating equipment.
The invention is illustrated in the accompanying drawing, wherein the figure is a vertical section through a liquid storage tank of the pulsating or floating roof type equipped with sealing means in accordance with the invention.
Referring to the drawing in detail, Ill designates a liquid storage tank having a floating roof l8, 1. e., a roof which rises and falls with rise and fall of the level of the liquid in the tank. The roof I8 is provided with oneor more air chambers or pontoons l9 by which the roof is caused to float on the liquid in the tank, and, in accordance with known practice, means 20 is provided to afford a vapor seal between the roof and the tank. Through the roof I8, or through one of the pontoons thereof, is formed an opening, and extending through this opening to, or substantially to, the bottom of the tank, and above the roof to the highestmost position of the latter, is a pipe or tube II to accommodate suitable means for indicating the level of liquid in the tank Ill The pipe or tube H is suitably vented to the atmosphere above the roof l8, as indicated at I3 As illustrated in the present instance, the roof l8 is a provided with a tubular formation 2| through which the pipe or tube ll extends, a cover 22 is provided for this tubular formation, a freely sliding packed joint 23 is provided between said cover 22 and the pipe or tube l I, and extending downwardly from the cover in surrounding, slightly spaced relationship to the pipe or tube II is a tube 24 which is open at its bottom. The width of the space between the tube 24 and the tubular formation 2| is immaterial, inasmuch as said space is suitably sealed at its top as, for example, by a seal 25 between the cover 22 and. the top of the tubular formation 2|. Thus, even though the joint 23 may not be entirely tight, little or no loss of tank vapor occurs because of the very small area of the space between the tube 24 and the pipe or tube l I. In association with any given tank roof having an opening of a given diameter, it may be desired to employ a tube ll of small or large diameter. For a tube ll of any given diameter there is provided a tube 24 of only slightly greater diameter so that only a small space exists between the tube II and the tube 24. Any tube 24 may be sealed at its top to the top of the tube 2|.
Without further description it is thought that the features and advantages of the invention will be-readily apparent to those skilled in the art, and it will of course be understood that changes in the form, proportion and minor details of construction may be resorted to, without departing from the spirit of the invention and scope of the appended claim.
I claim:
A vapor seal for a device for measuring the liquid contents of a tank wherein the tank includes a vertically movable roof having an opening therein and the measuring device includes a vertically disposed fixed tube extending through said opening, said seal comprising a vertically disposed, open-ended tubular member carried by the roof and defining the opening therein, a lateral flange at the upper end of said tubular member, an intermediate, vertically disposed, open-ended tubular member surrounding said tube and vertically movable therealong, said intermediate tubular member being disposed within said roof-carried tubular member and being spaced therefrom to permit horizontal movement of the roof relative to said intermediate tubular member, a lateral flange at the upper end of said intermediate tubular member overlying the lateral flange of said first mentioned tubular member, packing means between said flanges, and packing means between said intermediate tubular member and said tube.
JOHN J. TOKHEIM.
US177793A 1937-12-02 1937-12-02 Liquid level gauge equipment Expired - Lifetime US2237461A (en)

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2422869A (en) * 1945-02-05 1947-06-24 John H Wiggins Gaging and sampling apparatus for liquid storage tanks
US2486823A (en) * 1947-07-02 1949-11-01 Socony Vacuum Oil Co Inc Compensating means for liquid level indicators
US2567920A (en) * 1945-10-06 1951-09-18 Chicago Bridge & Iron Co Floating roof
US2587526A (en) * 1947-10-28 1952-02-26 Sun Oil Co Floating roof tank gauge
US2957347A (en) * 1957-12-05 1960-10-25 Sun Oil Co Apparatus for gauging liquid level
US3240064A (en) * 1964-10-20 1966-03-15 Phillips Petroleum Co Liquid level gauge for frozen earth storage tank
US3862701A (en) * 1972-01-31 1975-01-28 Chicago Bridge & Iron Co Automatic bleeder vent for covered floating roof tanks
US4260068A (en) * 1980-01-10 1981-04-07 Texaco Inc. Storage tank and floating roof with a gauge well having a floating seal therein
US4790447A (en) * 1982-09-13 1988-12-13 Caltex Oil (Australia) Pty. Limited Modification to floating roof tank design
US4957214A (en) * 1982-09-13 1990-09-18 California Texas Oil Corporation Modification to floating roof tank design
US5423446A (en) * 1993-04-20 1995-06-13 Johnson; Ronald G. Vapor seal for floating roof of liquid storage tank
US5560509A (en) * 1994-03-21 1996-10-01 Chicago Bridge & Iron Technical Services Company Guide pole fitting seal for floating roof storage tanks
WO2001071295A1 (en) * 2000-03-17 2001-09-27 Hal-Tech Ltd. Alternative liquid environment measurement system and method
US6505445B2 (en) 2001-06-11 2003-01-14 Petrex, Inc. Floating cover
US6922956B2 (en) 2001-06-11 2005-08-02 Petrex, Inc. Floating cover
US9199207B1 (en) * 2009-10-16 2015-12-01 Marathon Petroleum Company Lp Gauge well mixer

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2422869A (en) * 1945-02-05 1947-06-24 John H Wiggins Gaging and sampling apparatus for liquid storage tanks
US2567920A (en) * 1945-10-06 1951-09-18 Chicago Bridge & Iron Co Floating roof
US2486823A (en) * 1947-07-02 1949-11-01 Socony Vacuum Oil Co Inc Compensating means for liquid level indicators
US2587526A (en) * 1947-10-28 1952-02-26 Sun Oil Co Floating roof tank gauge
US2957347A (en) * 1957-12-05 1960-10-25 Sun Oil Co Apparatus for gauging liquid level
US3240064A (en) * 1964-10-20 1966-03-15 Phillips Petroleum Co Liquid level gauge for frozen earth storage tank
US3862701A (en) * 1972-01-31 1975-01-28 Chicago Bridge & Iron Co Automatic bleeder vent for covered floating roof tanks
US4260068A (en) * 1980-01-10 1981-04-07 Texaco Inc. Storage tank and floating roof with a gauge well having a floating seal therein
US4790447A (en) * 1982-09-13 1988-12-13 Caltex Oil (Australia) Pty. Limited Modification to floating roof tank design
US4957214A (en) * 1982-09-13 1990-09-18 California Texas Oil Corporation Modification to floating roof tank design
US5423446A (en) * 1993-04-20 1995-06-13 Johnson; Ronald G. Vapor seal for floating roof of liquid storage tank
US5560509A (en) * 1994-03-21 1996-10-01 Chicago Bridge & Iron Technical Services Company Guide pole fitting seal for floating roof storage tanks
AU686786B2 (en) * 1994-03-21 1998-02-12 Chicago Bridge & Iron Co. Guide pole fitting seal for floating roof storage tanks
GB2301857B (en) * 1994-03-21 1998-05-06 Chicago Bridge & Iron Tech Guide pole fitting seal for floating roof storage tanks
US5829621A (en) * 1994-03-21 1998-11-03 Chicago Bridge & Iron Technical Services Company Guide pole fitting seal for floating roof storage tanks
WO2001071295A1 (en) * 2000-03-17 2001-09-27 Hal-Tech Ltd. Alternative liquid environment measurement system and method
US6363783B1 (en) * 2000-03-17 2002-04-02 Hal-Tech, Ltd Alternative liquid environment measurement system and method
US6505445B2 (en) 2001-06-11 2003-01-14 Petrex, Inc. Floating cover
US6922956B2 (en) 2001-06-11 2005-08-02 Petrex, Inc. Floating cover
US9199207B1 (en) * 2009-10-16 2015-12-01 Marathon Petroleum Company Lp Gauge well mixer

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