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WO2001040739A1 - Indicateur de niveau d'un liquide - Google Patents

Indicateur de niveau d'un liquide Download PDF

Info

Publication number
WO2001040739A1
WO2001040739A1 PCT/ZA2000/000230 ZA0000230W WO0140739A1 WO 2001040739 A1 WO2001040739 A1 WO 2001040739A1 ZA 0000230 W ZA0000230 W ZA 0000230W WO 0140739 A1 WO0140739 A1 WO 0140739A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid
tube
level indicator
liquid level
level
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.)
Ceased
Application number
PCT/ZA2000/000230
Other languages
English (en)
Inventor
Christiaan De Wet Hoogendyk
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AU18231/01A priority Critical patent/AU1823101A/en
Publication of WO2001040739A1 publication Critical patent/WO2001040739A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • G01F23/04—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 dip members, e.g. dip-sticks
    • 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
    • G01F23/02—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 gauge glasses or other apparatus involving a window or transparent tube for directly observing the level to be measured or the level of a liquid column in free communication with the main body of the liquid

Definitions

  • This invention relates to indicating the liquid level in vessels such as tanks and, more particularly but not exclusively, to underground fuel tank.
  • BAC-r ⁇ ROOSD OFTHE INVENTION ft is common practice, especially with underground tanks to determine the liquid level in the tank with a dip stick.
  • the wet mark give an indication of the volume content of liquid in the tank. This wet mark is always higher than the actual level due to the wave action and surface tension of the liquid thus giving an inaccurate indication.
  • petrol tends to "creep" up against the dipstick, giving an higher indication of ihe petrol level an the actual petrol level.
  • Electronic measuring equipment is a possible option but it is expensive.
  • a tube open on both ends, dipped into a liquid will have when in equilibrium a liquid level in Ihe tube at the same level as the level of the liquid it is dipped into.
  • the height of liquid in the tube equals the depth of liquid in the container. It is the intension of this invention to use this to obtain a more accurate indication of the liquid level. A more accurate indication of ihe liquid level would result in determined a more accurate liquid volume content, for stock taking purposes for instance. The more accurate the volume content measurement is the easier it is to detect any losses and the better the control.
  • Figure 1 is a cross sectional view of a liquid level indicator in accordance with the present invention.
  • the liquid level indicator constructed of material inert to fuel, consist of a transparent tube (1), preferably with graduations (2) , and equipped with a device such as a valve (3) fitted preferably at die bottom end of the tube. If the instrument is placed vertically into the vessel (6) with liquid (5), the liquid push up into ihe tube if the valve (3) is open. When reaching equilibrium the liquid level (5') in the tube equals die liquid level (5) in die container. If die liquid level (5) need to be known the device need to be lifted up out of the tank to about eye level. The exit of liquid from the tube (1) when lifted can be prevented with the valve (3) that close prior to lifting or at die moment the instrument is lifted. Thus the liquid level (5') remains unchanged in the tube (1). The volume content of liquid in the container can either be calculated using die height of liquid in the tube or read of directly against the correctly marked increments (2).
  • the liquid level indicator is especially suitable for determining the fuel levels and volume content in underground tanks such as are in use by fuel depots and filling stations.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Level Indicators Using A Float (AREA)

Abstract

Cet indicateur de niveau d'un liquide sert à déterminer le contenu volumique d'un liquide dans des citernes, telles que des citernes à carburant enterrées. Ce dispositif se compose d'un tube transparent (1), de préférence gradué (2) et équipé d'une soupape (3) située au niveau de l'extrémité inférieure du tube. Si on place l'instrument verticalement dans la citerne (6) contenant un liquide (4), le liquide remonte dans le tube si la soupape (3) est ouverte. Lors de l'atteinte du point d'équilibre, le niveau de liquide (5') dans le tube est égal au niveau du liquide (5) dans la citerne. Lorsque l'on retire le tube (1) en le soulevant, la soupape empêche (3) le liquide de sortir du tube car elle se ferme avant le soulèvement, ou au moment du soulèvement, du tube. Ainsi le niveau de liquide reste inchangé dans le tube (1). Le contenu volumique du liquide peut soit se calculer à l'aide de la hauteur du liquide présent dans le tube, soit se lire directement sur les graduations marquées (2).
PCT/ZA2000/000230 1999-12-04 2000-11-24 Indicateur de niveau d'un liquide Ceased WO2001040739A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU18231/01A AU1823101A (en) 1999-12-04 2000-11-24 Liquid level indicator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA99/3766 1999-12-04
ZA993766 1999-12-04

Publications (1)

Publication Number Publication Date
WO2001040739A1 true WO2001040739A1 (fr) 2001-06-07

Family

ID=25587760

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ZA2000/000230 Ceased WO2001040739A1 (fr) 1999-12-04 2000-11-24 Indicateur de niveau d'un liquide

Country Status (2)

Country Link
AU (1) AU1823101A (fr)
WO (1) WO2001040739A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110411534A (zh) * 2019-09-06 2019-11-05 无锡市产品质量监督检验院 蓄电池液位高度测试仪

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1237839A (fr) * 1959-06-23 1960-08-05 Jauge de niveau du liquide dans un réservoir
US3169322A (en) * 1961-07-17 1965-02-16 Joseph V Mile Combined gage and sampler device
US3390463A (en) * 1966-04-19 1968-07-02 Margaret Hirsch Liquid-level gauge
US4335606A (en) * 1980-06-13 1982-06-22 Michalak Janusz K Apparatus and method for measuring fluid

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1237839A (fr) * 1959-06-23 1960-08-05 Jauge de niveau du liquide dans un réservoir
US3169322A (en) * 1961-07-17 1965-02-16 Joseph V Mile Combined gage and sampler device
US3390463A (en) * 1966-04-19 1968-07-02 Margaret Hirsch Liquid-level gauge
US4335606A (en) * 1980-06-13 1982-06-22 Michalak Janusz K Apparatus and method for measuring fluid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110411534A (zh) * 2019-09-06 2019-11-05 无锡市产品质量监督检验院 蓄电池液位高度测试仪

Also Published As

Publication number Publication date
AU1823101A (en) 2001-06-12

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