EP0091264A1 - Equipement de pompage submersible - Google Patents

Equipement de pompage submersible Download PDF

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Publication number
EP0091264A1
EP0091264A1 EP83301759A EP83301759A EP0091264A1 EP 0091264 A1 EP0091264 A1 EP 0091264A1 EP 83301759 A EP83301759 A EP 83301759A EP 83301759 A EP83301759 A EP 83301759A EP 0091264 A1 EP0091264 A1 EP 0091264A1
Authority
EP
European Patent Office
Prior art keywords
suction
ducting
discharge
pair
arms
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.)
Withdrawn
Application number
EP83301759A
Other languages
German (de)
English (en)
Inventor
John Charles Hill
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.)
ALLUVIAL MINING AND SHAFT SINKING CO Ltd
Original Assignee
ALLUVIAL MINING AND SHAFT SINKING CO 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
Application filed by ALLUVIAL MINING AND SHAFT SINKING CO Ltd filed Critical ALLUVIAL MINING AND SHAFT SINKING CO Ltd
Publication of EP0091264A1 publication Critical patent/EP0091264A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/905—Manipulating or supporting suction pipes or ladders; Mechanical supports or floaters therefor; pipe joints for suction pipes
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/8858—Submerged units
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F7/00—Equipment for conveying or separating excavated material
    • E02F7/10—Pipelines for conveying excavated materials

Definitions

  • This invention relates to pumping equipment and more especially to submersible pumping equipment suitable for handling and transfer of entrained solids underwater.
  • the equipment of the invention is useful for example in suction-dredging, underwater landfill or dumping, or underwater jet-blasting of resistant bottom layers.
  • the equipment should be of high power and capacity. This means that in addition to the normal hazards of deep diving, the diver must ensure that, for example, the suction on the sea-bed material does not prejudice his own safety, or that the exhaust from the material being deposited does not cause such turbulence and mechanical disturbance as to hazard his position. In practice, this means that the diver operating such equipment has a tendency to instruct for its operation in short bursts, interspersed with visual or tactile exploration of the cavity (or deposit) formed by the flow of water.
  • the present invention provides submersible pumping such equipment with articulated rigid arms supporting or constituting suction and exhaust ducting, the arms being exactly controllable as to position by an operator remote from the pump whereby a programme of excavation or deposition can be carried out in a predetermined fashion and optionally recorded.
  • the invention provides submersible equipment comprising a framework carrying a submersible jet-pump unit with a suction inlet and a discharge outlet;the framework having pivoted, directly or indirectly, at one end thereof and at a substantially vertical pivot the inner end of one of a first pair of articulated arms supporting or constituting suction ducting; and the framwork having attached at the other end thereof discharge ducting adapted to be capable of discharge placement at a fixed location remote from the framework.
  • the discharge ducting may be an elongate flexible hose, having at its outer end (a) a diffuser means to minimise the tendency of the hose to move about and (b) securing means for attachment to an anchor.
  • a diver may be used to position the discharge end of the equipment, but is of course not needed for operation of the equipment per se.
  • the discharge ducting may be constituted by, or supported by, a second pair of rigid articulated arms pivoted directly or indirectly at the other end of said framework.
  • a jet-pump is a submersible pump in which a jet of water is pumped into a housing to create vacuum conditions such as to entrain water through a second, suction inlet and pass the combined streams, and any entrained solids, through a common discharge outlet.
  • the framework will usually support a primary pump for the jet (e.g. a clean water impeller pump) preferably of a type with more than one water outlet attachable to operate the jet-pump.
  • the framework can optionally support a suitable stabilising vane or rail; base skids; and a suitable hoisting sling.
  • the framework and its attachment as described above can be capable of assembly or disassembly in relation to an undersea sledge, which may be provided with motive power e.g. a hydraulic power pack, or with replacement and/or supplementary operating power sources, and/or retractable stabilising feet.
  • motive power e.g. a hydraulic power pack
  • replacement and/or supplementary operating power sources e.g. a hydraulic power pack
  • retractable stabilising feet e.g. a hydraulic power pack
  • the first pair of arms is preferably distinct from, although supporting, the suction ducting.
  • the inner end of the inner arm of the first pair is attached by a substantially horizontal and transverse pivot to a connecting piece itself connected to the substantially vertical pivot. (This therefore constitutes an "indirect”pivotal linkage).
  • the outer end of the inner arm is pivoted usually also by a horizontal transverse pivot, to a point intermediate the ends of the outer arm.
  • the suction ducting supported thereby can either be constituted by separate rigid pivotally interconnecting portions in communication at their innermost end via flexible ducting member to the jet pump suction inlet, or be a supported length of flexible hose, or be more rigid hose but with flexible joint portions.
  • the suction ducting possesses three successive portions, defining between themselves two pivotal or flexible intercommunications. The"inner of these communications can lie at the pivot point between the arms of the first pair of arms; the outer intercommunication can lie at the outer end of the outer arm.
  • controllable piston-cylinder arrangements controlling each relevant pivot or intercommunication.
  • These may be provided with read-out and/or logging facilities to give an immediate and/or permanent record of position.
  • the "discharge” end preferably comprises the elongate flexible hose, as discussed above. If it does utilises the support arms, these may have the same mutual arrangement as at the "suction" end of the equipment.
  • any rigid arms of the second pair are actually constituted by rigid discharge ducting.
  • the inner end of the inner discharge ducting arm unit of the pair preferably has a transverse horizontal pivotal (or flexible) intercommuniaation with a discharge end piece of the jet-pump; and similarly the pivotal (or flexible) intercommunication with the outer discharge ducting unit is preferably transverse and horizontal.
  • selective and separate positioning can be :provided by separate piston-cylinder arrangements for each such intercommunication, and each can be provided with a remote read-out and/or logging facility.
  • aspects of the invention include (a) a method of dredging whether of an area or a trench, in which the above equipment is used e.g. by continuous pumping as the first pair of arms is moved (ii) a method of selective excavation using equipment e.g.
  • the assembly shown in Figure 1 can be considered in three main portions,namely the pumping unit generally indicated at 1, the suction unit 2, and the discharge unit 3.
  • the pumping unit 1 has a tubular support framework 4 (vented to allow flooding and draining) with a lifting sling 5 connected at 6 and 7 having an eye 8 for attachment to a suitable lifting cable.
  • Support framework 4 at its lower end has tubular base skids 9 and a stabilizing sail or vane 10 in case it is desired to work with the unit suspended rather than standing on the sea bed.
  • the operative portion of the pumping unit has an intake pump housing 11 with outlets 12, to provide a motive flow of water. As shown, one outlet 12 is attached to the inlet of a jet-pump housing.
  • the jet-pump also possesses suction inlet 1 4 , diffuser 15 and mixing chamber 13 and discharge outlet 16. Typically, it possesses a solidly constructed mild steel body providing two 6" suction ports.
  • the discharge mixing chamber is a casting designed to withstand the continuous pumping of highly abrasive materials, i.e. sand,gravel etc.
  • the jet pump typically has a designed throughpass of 6" which allows the pumping of trash and particles up to a 51" sphere.
  • a swivel mounting 17 To one end of the framework 4 is located a swivel mounting 17.
  • Suction unit 2 generally comprises an arrangement of pivoted rigid articulated arms, supporting pivotally intercommunicating suction pipe portions, for controlled movement by hydraulic piston-cylinder arrangements about the various pivot points.
  • Connecting piece 18 is pivoted around a generally vertical axis of swivel mounting 17 by means of a hydraulic piston-cylinder arrangement (not shown).
  • the lower end of rigid arm 19 is pivoted to the connecting piece about a horizontal transverse axis at 20 by a further piston-cylinder arrangement, also not shown.
  • Arm 19 can thus pivot through 180°.
  • the upper end of arm 19 is pivoted about a horizontal pivot 21 to a position near the upper end of arm 22.
  • the angle between arms 19 and 22 is changeable by a piston-cylinder arrangement 23, itself pivotally attached at 24 and 25. Arms 19 and 22 are typically 3 m. long.
  • Rigid suction pipe portion 26 (e.g. of 10 cm bore) lies along arm 19, and is put in communication at its inner end 27 with suction inlet 14 of jet-pump 13 by means of a large-gauge flexible heavy-duty hose member 28. At its outer end 29, and at the general location of pivot point 21 the suction pipe portion 26 is pivotally in communication with a second rigid suction pipe portion 30 lying along arm 22. Portion 30, at its outer end 31, is itself pivotally in communication with an outermost suction pipe portion 32.
  • portions 30 and 32 Relative angular movement of portions 30 and 32 is ensured by piston-cylinder arrangement 33, pivoted at 34 near one end of arm 22 and at 35 to bracket 36 itself pivoted at 37 to an intermediate point of arm 22 so as to move link-rod 38 itself pivotally connected at 39 to the outermost portion 32.
  • hose can be supported along arms 19 and 22. Such hose may pass over a hose support cradle where the arms meet.
  • Discharge unit 3 has a rigid inner discharge pipe unit 40 pivotally intercommunicating at 41 with jet-pump outlet 16. Angular movement about this intercommunication is provided by further piston-cylinder arrangement 42 pivoted at its inner end (not shown) to framework 4 and at its outer end 43 to bracket 44.
  • the unit 3 also has a rigid outer discharge pipe unit 45 pivotally intercommuncating at 46 to the inner unit 40. Angular movement about this intercommunication 46 is provided by piston cylinder arrangement 47 pivoted at 48 to bracket 44 and at 49 to rigid extension 50 of outerpipe unit 45.
  • a diffuser outlet 60 and anchor 61 are attached to the outer end .(which can be typically 30 m distant) for positioning by a diver.
  • hose 59 can be of 15 cm internal diameter, and, like the suction hose, be made of suitable synthetic polymer e.g. rigid polyvinylchloride.
  • Figure 2 also shows a sledge mounting 58 for deplaceable pump equipment.
  • intake pump 11 pumps water through outlet 12 into the jet-pump 13.
  • This jet-pump entrains through suction inlet 14 water in the suction pipes, which in turn entrains water entering at the end of the outermost suction pipe unit 32 and any adjacent solids such as silt or gravel.
  • the two streams of water are mixed in chamber 15 and pumped out through outlet 16 into the two discharge pipe units.
  • the equipment also allows suction, or backfill, operations to be carried out at short notice in locations which are inaccessible in the time available, or otherwise uisafe, for divers. Also, it allows for control from a vessel which can be remote from the unit itself or control from a location on a river bank rather than in a service vessel.
  • a surrounding cylindrical shell can be provided around the outermost suction pipe portion 32, fed by a flexible auxiliary water supply connected to the unused outlet 12, to facilitate the suction of reproducible samples of large bulk.
  • a rake member can be associated with the equipment, possbily on the tubular framework 4 for operation by movement of the whole equipment, but more preferably on a rigid arm e.g. arm 22 for prior raking movements to remove construction debris or waste from the sea-bed prior to suction.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
EP83301759A 1982-03-29 1983-03-29 Equipement de pompage submersible Withdrawn EP0091264A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8209197 1982-03-29
GB8209197 1982-03-29

Publications (1)

Publication Number Publication Date
EP0091264A1 true EP0091264A1 (fr) 1983-10-12

Family

ID=10529370

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83301759A Withdrawn EP0091264A1 (fr) 1982-03-29 1983-03-29 Equipement de pompage submersible

Country Status (1)

Country Link
EP (1) EP0091264A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997025488A1 (fr) * 1996-01-06 1997-07-17 Ledingham Chalmers Trustee Company Limited Ameliorations apportees ou afferentes a un appareil d'exploitation miniere sous-marine
GB2324821A (en) * 1996-01-06 1998-11-04 Ledingham Chalmers Trustee Com Improvements in or relating to underwater mining apparatus
WO2001032503A2 (fr) * 1999-11-03 2001-05-10 Gto Subsea As Procece et dispositif permettant le deplacement sous-marin de pierres et de matieres solides
WO2001075235A1 (fr) * 2000-04-05 2001-10-11 Gto-Subsea As Appareil et procede de dragage sous-marin
EP0927286B1 (fr) * 1996-09-18 2003-03-12 PSL Group Norway ASA Drague
EP1951396A1 (fr) * 2005-11-22 2008-08-06 Ultra Aquatic Technology Pty Ltd Procede et appareil de collecte et/ou de retrait de boue
WO2016205859A1 (fr) * 2015-06-24 2016-12-29 Walding Daniel Amélioration des conditions de surf
IT201800002671A1 (it) * 2018-02-14 2019-08-14 Cristiano Rosa Unita’ operativa aspirante indipendente.
WO2021099074A1 (fr) * 2019-11-18 2021-05-27 Harwich Haven Authority Procédé et appareil de dragage
US11229861B2 (en) 2017-04-13 2022-01-25 Airrat Pty Ltd Sludge harvester improvements

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2044088A (en) * 1933-12-11 1936-06-16 U S Submarine Motorship Dredge Hydraulic material elevator
FR1553816A (fr) * 1967-10-19 1969-01-17
US3683521A (en) * 1970-03-05 1972-08-15 Ocean Science & Eng Submersible dredge
EP0034857A1 (fr) * 1980-02-26 1981-09-02 Jacobus Maria Josef Hofland Dispositif de dragage mobile
NL8001714A (nl) * 1980-03-24 1981-10-16 Hollands Aannemersbedrijf Zane Baggerwerktuig voor het graven van gaten of geulen in een waterbedding.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2044088A (en) * 1933-12-11 1936-06-16 U S Submarine Motorship Dredge Hydraulic material elevator
FR1553816A (fr) * 1967-10-19 1969-01-17
US3683521A (en) * 1970-03-05 1972-08-15 Ocean Science & Eng Submersible dredge
EP0034857A1 (fr) * 1980-02-26 1981-09-02 Jacobus Maria Josef Hofland Dispositif de dragage mobile
NL8001714A (nl) * 1980-03-24 1981-10-16 Hollands Aannemersbedrijf Zane Baggerwerktuig voor het graven van gaten of geulen in een waterbedding.

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997025488A1 (fr) * 1996-01-06 1997-07-17 Ledingham Chalmers Trustee Company Limited Ameliorations apportees ou afferentes a un appareil d'exploitation miniere sous-marine
GB2324821A (en) * 1996-01-06 1998-11-04 Ledingham Chalmers Trustee Com Improvements in or relating to underwater mining apparatus
GB2324821B (en) * 1996-01-06 2000-02-16 Ledingham Chalmers Trustee Com Improvements in or relating to underwater mining apparatus
US6178670B1 (en) 1996-01-06 2001-01-30 Rotech Holdings Limited Underwater mining apparatus
EP0927286B1 (fr) * 1996-09-18 2003-03-12 PSL Group Norway ASA Drague
WO2001032503A2 (fr) * 1999-11-03 2001-05-10 Gto Subsea As Procece et dispositif permettant le deplacement sous-marin de pierres et de matieres solides
US6966132B1 (en) 1999-11-03 2005-11-22 Gto Subsea As Method and device for moving subsea rocks and sediments
WO2001032503A3 (fr) * 1999-11-03 2003-02-06 Gto Subsea As Procece et dispositif permettant le deplacement sous-marin de pierres et de matieres solides
AU2001250680B2 (en) * 2000-04-05 2005-08-11 Fossura As Method and device for subsea dredging
US6868625B2 (en) 2000-04-05 2005-03-22 Fossura As Method and device for subsea dredging
JP2003529689A (ja) * 2000-04-05 2003-10-07 ゲーテーオー−サブシー・アーエス 海中浚渫方法及び装置
WO2001075235A1 (fr) * 2000-04-05 2001-10-11 Gto-Subsea As Appareil et procede de dragage sous-marin
EP1951396A1 (fr) * 2005-11-22 2008-08-06 Ultra Aquatic Technology Pty Ltd Procede et appareil de collecte et/ou de retrait de boue
EP1951396B1 (fr) * 2005-11-22 2015-04-15 Ultra Aquatic Technology Pty Ltd Procédé et appareil de collecte et/ou de retrait de boue
WO2016205859A1 (fr) * 2015-06-24 2016-12-29 Walding Daniel Amélioration des conditions de surf
US10472785B2 (en) 2015-06-24 2019-11-12 Daniel WALDING Surf conditions
US11229861B2 (en) 2017-04-13 2022-01-25 Airrat Pty Ltd Sludge harvester improvements
IT201800002671A1 (it) * 2018-02-14 2019-08-14 Cristiano Rosa Unita’ operativa aspirante indipendente.
WO2021099074A1 (fr) * 2019-11-18 2021-05-27 Harwich Haven Authority Procédé et appareil de dragage
AU2020385538B2 (en) * 2019-11-18 2022-03-03 Harwich Haven Authority Dredging method and apparatus
US11578472B2 (en) 2019-11-18 2023-02-14 Harwich Haven Authority Dredging method and apparatus

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Inventor name: HILL, JOHN CHARLES