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WO2018032036A1 - Prise de liquide flottante - Google Patents

Prise de liquide flottante Download PDF

Info

Publication number
WO2018032036A1
WO2018032036A1 PCT/AU2017/050697 AU2017050697W WO2018032036A1 WO 2018032036 A1 WO2018032036 A1 WO 2018032036A1 AU 2017050697 W AU2017050697 W AU 2017050697W WO 2018032036 A1 WO2018032036 A1 WO 2018032036A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid
intake
floating
upper portion
intake according
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/AU2017/050697
Other languages
English (en)
Inventor
Rob Hair
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.)
Rbh Engineering Pty Ltd
Original Assignee
Rbh Engineering Pty 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
Priority claimed from AU2016902646A external-priority patent/AU2016902646A0/en
Application filed by Rbh Engineering Pty Ltd filed Critical Rbh Engineering Pty Ltd
Publication of WO2018032036A1 publication Critical patent/WO2018032036A1/fr
Priority to AU2018100309A priority Critical patent/AU2018100309A4/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0087—Settling tanks provided with means for ensuring a special flow pattern, e.g. even inflow or outflow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2427—The feed or discharge opening located at a distant position from the side walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2444—Discharge mechanisms for the classified liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/30—Control equipment
    • B01D21/307—Passive control mechanisms without external energy, e.g. using a float

Definitions

  • the present invention relates to a floating liquid intake for a liquid suction removal system.
  • Settling ponds are known for separating solids or immiscible liquids from water.
  • Settling ponds have found uses in mining sites where the tailings by-products entrained in water is separated in the pond water, with the by-product settled out as sediment is then able to be pumped from the pond for reuse.
  • Another approach is to provide a float which dangles the pump inlet into the pond.
  • a strong suction from the pump can create a vortex in the water which can turn into a whirlpool that can allow air to enter the inlet.
  • the inlet is not at the surface where the cleanest water is located.
  • the present invention seeks to overcome or at least substantially ameliorate, the disadvantages and/or shortcomings of prior systems.
  • a floating liquid intake for a liquid suction removal system comprising:
  • a generally planar upper portion and a smaller generally planar lower portion substantially parallel to the upper portion and suspended from the upper portion so as to provide a cavity therebetween; a floatation portion arranged around the periphery of the upper portion and having sufficient positive buoyancy such that the intake will float in a liquid; an open pipe within the cavity for connection to a liquid suction removal system.
  • an opening into the cavity between the periphery of the lower portion and the underside of the upper portion so as to draw liquid from beneath, but near to the surface of the liquid.
  • the cavity provides a clear travel path of liquid from the periphery of the lower portion to the pipe opening.
  • the upper portion is substantially dome shaped.
  • the lower portion is substantially inversely dome shaped relative to the upper portion.
  • the floatation portion provides a barrier against a suction vortex forming between the open pipe and a surface of the liquid in which the intake is placed in use.
  • the upper portion is supported above the pipe by a column portion.
  • the column portion has an opening into an upper region of the cavity and an opening into the open pipe.
  • the open pipe has its opening downwardly facing the lower portion.
  • the pipe opening is lower than the opening into the cavity.
  • the pipe extends sideways from the upper portion, substantially as the surface of the liquid.
  • the upper and lower portions are substantially circular in plan view.
  • the floatation portion comprises a radially extending positively buoyant material.
  • the positively buoyant material extends radially from the periphery of the smaller lower portion in plan view.
  • the periphery of the upper portion has a downwardly extending lip.
  • the upper portion comprises an inner circular frame member with a plurality of radially extending spokes supporting an outer circular frame member.
  • the frame has a covering extending over the frames.
  • the cover is saucer shaped so as to form the dome shape.
  • the lower portion comprises a circular frame.
  • the circular frame of the lower portion is substantially the same diameter as the inner circular frame of the upper member.
  • the lower portion has a covering extending inwardly from the circular frame.
  • the covering is saucer shaped so as to form the inverse dome shape.
  • the covering has holes therein.
  • the holes allow liquid to flood into the lower portion so that the inlet is able to sink into the liquid to bring the floatation portion into contact with the surface of the liquid when the intake is first placed into the liquid.
  • the hole in the column portion allows air to escape into the pipe during flooding of the liquid into the hollow.
  • the opening of the pipe is below the floatation portion such that liquid will enter the pipe sufficiently for the pipe to be primed.
  • the floatation portion is positively buoyant to an extent that when the hollow is flooded the upper surface of the floatation portion is substantially level with the surface of the liquid.
  • a floating liquid intake for a liquid suction removal system comprising:
  • a hollow disc shaped body with a cavity inside the body; a floatation portion arranged around the periphery of the body and having sufficient positive buoyancy such that the intake will float in a liquid; an open pipe within the cavity for connection to a liquid suction removal system.
  • Figure 1 is a conceptual isometric view of the floating liquid intake for a liquid suction removal system according to an embodiment of the present invention
  • Figure 2 is a horizontal cross sectional view of the floating liquid intake of Figure 1 ;
  • Figure 3 is a vertical cross-section view of the floating liquid intake according to another embodiment of the present invention.
  • Figure 4 is an underside view of the intake of Figure 3; and [0027] Figure 5 is a top plan view of the intake of Figure 4. Detailed Description
  • a floating liquid intake 10 for a liquid suction removal system comprising a pipe 12 with a downwardly directed opening.
  • the opening defines a centre point of a generally disc shaped body 14 body having an in internal cavity 60.
  • the pipe 12 extends sideways from the centre point.
  • the disc shaped body 14 is defined by a generally dome shaped planar upper portion 30 and a smaller generally dome shaped planar lower portion 32 substantially parallel to the upper portion 30.
  • the dome shape of the lower portion 32 is inverted relative to the dome shape of the upper portion 30.
  • the lower portion 32 is suspended from the upper portion 30.
  • a floatation portion 28 is provided around the periphery of the upper portion 30 and has sufficient positive buoyancy such that the intake 10 will float in a liquid, which is typically water.
  • the pipe 12 has an opening 52 into the cavity 60 for communication of the inside of the cavity 60, via the pipe 12, to a liquid suction removal system, such as or including a pump.
  • the upper portion 30 comprises an inner circular frame member 16 with a plurality of radially extending spokes 20 supporting an outer circular frame member 18.
  • the inner circular frame 16 is formed of 1 10mm PN16 Polyethylene (PE) pipe.
  • the 16 frame has a pipe centre to pipe centre diameter of 2140mm, although other dimensions are possible.
  • the outer circular frame 18 is formed of 160mm PN16 PE pipe.
  • the frame 18 has a pipe centre to pipe centre diameter of 2830mm, although other dimensions are possible.
  • the outer circular frame 18 may be filled with closed cell foam.
  • the annulus formed between the inner circular frame 16 and the outer circular frame 18 may be provided with closed cell foam so as to form the floatation portion 28.
  • the frame 16 has a covering 70 extending over the frames.
  • the cover 70 is saucer shaped so as to form the dome shape.
  • the cover 70 is substantially rigid and preferably formed of 10 mm thick high density polyethylene (HDPE), or other appropriate material.
  • the lower portion 32 comprises a circular frame 24.
  • the circular frame 24 is substantially the same diameter as the inner circular frame 16.
  • the lower portion 32 has a covering 72 extending inwardly from the circular frame 24.
  • the covering 72 is saucer shaped so as to form the inverse dome shape and is preferably formed of 10 mm thick HDPE, or other appropriate material.
  • the covering 72 has holes 34 therein.
  • the holes 34 allow liquid to flood into the lower portion 32 so that inlet 10 is able to sink into the liquid to bring the floatation portion 28 into contact with the surface of the liquid when the intake 10 is first placed into the liquid.
  • the holes 34 are on the sloped portion of the covering 72 and in Figures 3 and 4 the holes are on the flat portion of the covering 72.
  • the opening 52 of the pipe is below the floatation portion 28 such that liquid will enter the pipe 12 sufficiently for the pipe 12 to be primed.
  • the upper portion 30 is supported above the pipe 12 by a column portion 40, preferably in the form of a 1 10mm PN16 PE pipe.
  • the column portion 40 has an opening 42 into an upper region of the cavity 60 and an opening 44 into the pipe 12.
  • the holes 42 and 44 in the column portion 40 allows air to escape the cavity 60 into the pipe 12 during flooding of the liquid into the cavity 60.
  • the holes 42 and 44 are 20mm in diameter.
  • the holes 42 and 44 are for flooding of the upper portion of the cavity 60 via a dry prime system.
  • the floatation portion 28 provides a barrier against a suction vortex forming between the pipe opening 52 and a surface of the liquid in which the intake 10 is placed in use.
  • the larger diameter of the pipe of frame 18 provides a downwardly directed lip into the body of liquid.
  • the floatation portion 28 is positively buoyant to an extent that when the cavity 60 is flooded the upper surface of the floatation portion 28 is substantially level with the surface of the liquid.
  • the outer circular frame 18 may be connected to the circular frame 24 by brace connection 38.
  • These sections are preferably formed of 20mm thick PE section.
  • the brace connections 38 are aligned with the spokes 20.
  • the pipe 12 is 315mm PN16 PE pipe.
  • the pipe 12 terminates in a stub flange 52 for connection to another pipe forming part of or leading to the liquid suction removal system.
  • the relative sizes of the intake may be as described, but other dimensions are possible.
  • the centre to centre diameter of the outer circular frame 18 of Figure 2 is about 3190mm.
  • the centre to centre diameter of the inner circular frame 16 is about 21 10mm.
  • the inner circular frame 16 is spaced from the circular frame 24 by about 50mm.
  • the dome height of the covers 70 and 72 are each about 300mm. In the embodiment of Figure 3 the height of the cover 70 is about 410mm
  • the intake 10 is attached to a boom or rigid section of pipe via the stub flange 52 for manipulation, the stub flange 52 is also connected to a pipe 12 connected to a self- priming pump.
  • the intake 10 can then be lowered into a liquid, such as water in a settling pond or a dam.
  • the liquid can then enter to cavity 60 via the flood holes 34. Air will initially escape via the opening 36, and via column 40 and pipe 12 until the underside of the floatation portion 28 seals with the surface of the liquid.
  • Floatation portion 28 provides positive buoyancy sufficient for the intake 10 to remain floating. It is desirable that the intake sink to the point where the upper surface of the floatation portion 28 is at the surface of the liquid or just submerged so that the floatation portion 28 provides a barrier to prevent formation of a suction vortex in the liquid when pumping commences.
  • the shape of the body 14 substantially evenly distributes the suction negative pressure out to the substantially annulus shaped opening so that liquid is drawn in, in a relatively non-turbulent flow.
  • the intake 10 can accommodate flow rates from 1 cubic meter to 1000 cubic meters per hour in depth of at least 450mm.
  • the holes 34 also allow the lower portion 32 to drain as it is lifted from the liquid.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Removal Of Floating Material (AREA)

Abstract

Une entrée de liquide flottante pour un système de suppression par aspiration de liquide comprend une partie supérieure généralement plane; et une partie inférieure généralement plane plus petite sensiblement parallèle à la partie supérieure et suspendue à la partie supérieure de manière à ménager une cavité entre elles. Une partie de flottaison est disposée autour de la périphérie de la partie supérieure et présente une flottabilité positive suffisante pour que l'entrée flotte dans un liquide. Un tuyau ouvert se trouve à l'intérieur de la cavité pour être relié à système de suppression aspiration de liquide.
PCT/AU2017/050697 2016-07-05 2017-07-05 Prise de liquide flottante Ceased WO2018032036A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2018100309A AU2018100309A4 (en) 2016-07-05 2018-03-23 Floating liquid intake

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2016902646 2016-07-05
AU2016902646A AU2016902646A0 (en) 2016-07-05 Floating Liquid Intake

Related Child Applications (1)

Application Number Title Priority Date Filing Date
AU2018100309A Division AU2018100309A4 (en) 2016-07-05 2018-03-23 Floating liquid intake

Publications (1)

Publication Number Publication Date
WO2018032036A1 true WO2018032036A1 (fr) 2018-02-22

Family

ID=61195886

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2017/050697 Ceased WO2018032036A1 (fr) 2016-07-05 2017-07-05 Prise de liquide flottante

Country Status (1)

Country Link
WO (1) WO2018032036A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11207615B2 (en) 2017-12-22 2021-12-28 Turret IP Pty Ltd Floating liquid intake

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3534859A (en) * 1969-03-11 1970-10-20 Gulf Research Development Co Apparatus for removal of oil floating on water or the like
US3782552A (en) * 1972-03-22 1974-01-01 S Wendell Floating suction nozzle
US4243529A (en) * 1979-01-15 1981-01-06 Oil Recovery Systems, Inc. Oil collecting apparatus
DE19843840A1 (de) * 1998-09-24 2000-03-30 Joachim Mueller Schwimmfähige Kompakt-Axialpumpe insbesondere zum Einsatz in der Bewässerung und der Teichbelüftung
US20070227986A1 (en) * 2004-08-02 2007-10-04 Otv Sa Device for Collecting Clarified Water for a Basin and Corresponding Basin

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3534859A (en) * 1969-03-11 1970-10-20 Gulf Research Development Co Apparatus for removal of oil floating on water or the like
US3782552A (en) * 1972-03-22 1974-01-01 S Wendell Floating suction nozzle
US4243529A (en) * 1979-01-15 1981-01-06 Oil Recovery Systems, Inc. Oil collecting apparatus
DE19843840A1 (de) * 1998-09-24 2000-03-30 Joachim Mueller Schwimmfähige Kompakt-Axialpumpe insbesondere zum Einsatz in der Bewässerung und der Teichbelüftung
US20070227986A1 (en) * 2004-08-02 2007-10-04 Otv Sa Device for Collecting Clarified Water for a Basin and Corresponding Basin

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11207615B2 (en) 2017-12-22 2021-12-28 Turret IP Pty Ltd Floating liquid intake
US11679346B2 (en) 2017-12-22 2023-06-20 Turret IP Pty Ltd Floating liquid intake

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