EP2229485B1 - Dredging vessel - Google Patents

Dredging vessel Download PDF

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Publication number
EP2229485B1
EP2229485B1 EP08849929A EP08849929A EP2229485B1 EP 2229485 B1 EP2229485 B1 EP 2229485B1 EP 08849929 A EP08849929 A EP 08849929A EP 08849929 A EP08849929 A EP 08849929A EP 2229485 B1 EP2229485 B1 EP 2229485B1
Authority
EP
European Patent Office
Prior art keywords
water
head
arms
pair
vessel 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.)
Active
Application number
EP08849929A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2229485A1 (en
Inventor
John Simon Blight
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.)
SILT TEK Ltd
Original Assignee
Silt Tek 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 Silt Tek Ltd filed Critical Silt Tek Ltd
Priority to PL08849929T priority Critical patent/PL2229485T3/pl
Publication of EP2229485A1 publication Critical patent/EP2229485A1/en
Application granted granted Critical
Publication of EP2229485B1 publication Critical patent/EP2229485B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • 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
    • E02F3/8833—Floating installations
    • E02F3/885—Floating installations self propelled, e.g. ship
    • 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
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9206—Digging devices using blowing effect only, like jets or propellers
    • 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
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9243—Passive suction heads with no mechanical cutting means
    • E02F3/925—Passive suction heads with no mechanical cutting means with jets
    • 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
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9256—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head
    • E02F3/9262—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head with jets
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/28—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways
    • E02F5/287—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways with jet nozzles

Definitions

  • the invention relates to a dredging vessel.
  • a dredging vessel comprising:
  • the head is connected between one first end of a pair of arms, the other second end of the pair of arms being connected to the floating vessel, said pair of arms keeping the head in a fixed position relative to the floating vessel.
  • the pair of arms is pivoted to the vessel.
  • the pair of arms extends forward from the rear end of the vessel.
  • the head comprises a first bar having along its length water outlets in the form of a plurality of nozzles.
  • the nozzles are each connected to the water pump through hoses.
  • the first bar can rotate relative to the pair of arms whereby to adjust the angle or the nozzles relative to the pair of arms.
  • the first bar may be rotated using a hydraulic ram.
  • the head further comprises a second bar having along its length water outlets in the form of a plurality of nozzles.
  • the nozzles are each connected to the water pump through hoses.
  • the second bar can rotate relative to the pair of arms whereby to adjust the angle or the nozzles relative to the pair of arms.
  • the second bar may be rotated using a hydraulic ram.
  • the first and second bars may be rotated independently.
  • jets of water from nozzles from both first and second bars form a "V" to disturb the particulate material with maximum effect.
  • Vessel 1 has a floating member in the form of a barge 2 adapted to float in ambient water.
  • Barge 2 has a bow 2A and stem 2B.
  • Barge 2 has adjacent its stem 2B propulsion means in the form of a propeller 3 to drive and manoeuvre the barge 2.
  • one or more bow thrusters 4 may be provided.
  • a pair of arms 10A,10B is pivoted at one second end to the stern 2A of barge 2. Arms 10A,10B extend forward from the stern 2B, and can be raised or lowered using a wire 11.
  • a head in the form of first and second of rotating bars 12,13 are provided between first ends of arms 10A,10B forward of the propeller 3.
  • Bar 12 has a lever 12A at one end connected to a hydraulic ram 12B.
  • Bar 13 has a lever 13A at end connected to a hydraulic ram 13B. Operation of hydraulic rams 12B13B rotate bars 12,13.
  • Bars 12,13 are kept in a fixed position relative to barge 2 by means of wire 11. Bars 12,13 can be raised or lowered so they are adjacent the water bed by lengthening or shortening a wire 11. Bars 12 and 13 each support a plurality of nozzles 14 each connected by a hydraulic pipe 15 to outlet of high pressure water pump 16. Pump 16 has an inlet 16A connected to ambient water. Bars 12,13 move along the water bed upon movement of the barge 2 relative to the water bed.
  • the water pump 16 delivers water under pressure to the nozzles. Jets of water emerge from the nozzles to disturb particulate material on a water bed whereby it mixes with ambient water.
  • propeller 3 draws disturbed particulate material mixed with ambient water up towards the barge 2, and the propeller 3 ejects disturbed particulate material mixed with ambient water to the rear of the vessel where it can move out of the area as the water flows (e.g. as a river or with the tide).
  • bars 12,13 are rotated so that the jets of water from nozzles 14 from both bars 12 and 13 form a "V" to disturb the particulate material with maximum effect.
  • Bars 12 and 13 are rotated into different positions to accommodate different angles of pair of arms 10A,10B relative to barge 2.
  • the nozzles from bar 13 may direct jets of water backwards and the nozzles from bar 12 may direct jets of water forwards.
  • a single hydraulic motor 17 (or other mechanical or electrical or electronic power source) may be used to power pump 16 and propeller 3.
  • the force of water from the twin spray-bar action (bars 12 and 13) undercuts and dislodges particulate material from the waterbed. This is particularly effective when used on hard-packed mud or silt where a single spray-bar or bar with low pressure water jets may have limited impact.
  • the twin spray bars break up chunks of mud or silt into small particles through the pulverising action of the two interlocking spray streams.
  • the forward bar 13 which angles spray towards the rear of the barge, acts additionally to accelerate the stream of water containing particulate material towards the rear of the barge where the action of the barge propeller moves the particulate material into the ambient current or outgoing tidal stream.
  • the pressure of water fed to each bar 12,13 from the water pump 16 can be varied to accentuate the undercutting effect, the pulverising effect or to flush water containing particulate material in suspension towards the rear of the barge, according to the operational requirement.
  • the arms connected to the spray bars, and which pivot at the stem of the barge must be raised and lowered according to the depth of water the barge is operating in. It follows that, in order to maintain the optimal angle of the V-spray to the waterbed, the spray-bars must be capable of being rotated independently as the arms are raised or lowered, and this may be a key part of the design.
  • the invention may take a form different to that specifically described above.
  • the head could comprise just a single bar 13.
  • the nozzles 14 could be adjusted or selected for controlling flow rates of water.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Table Devices Or Equipment (AREA)
  • Cleaning Or Clearing Of The Surface Of Open Water (AREA)
  • Disintegrating Or Milling (AREA)
  • Lubricants (AREA)
  • Catching Or Destruction (AREA)
  • Toys (AREA)
  • Hydraulic Turbines (AREA)
EP08849929A 2007-11-16 2008-11-14 Dredging vessel Active EP2229485B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08849929T PL2229485T3 (pl) 2007-11-16 2008-11-14 Pogłębiarka

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0722577A GB2454729A (en) 2007-11-16 2007-11-16 Dredging vessel with a propeller used for propulsion and for distributing dredged sediment
PCT/EP2008/065616 WO2009063080A1 (en) 2007-11-16 2008-11-14 Dredging vessel

Publications (2)

Publication Number Publication Date
EP2229485A1 EP2229485A1 (en) 2010-09-22
EP2229485B1 true EP2229485B1 (en) 2012-02-08

Family

ID=38896475

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08849929A Active EP2229485B1 (en) 2007-11-16 2008-11-14 Dredging vessel

Country Status (8)

Country Link
EP (1) EP2229485B1 (pt)
AT (1) ATE544913T1 (pt)
DK (1) DK2229485T3 (pt)
ES (1) ES2382254T3 (pt)
GB (1) GB2454729A (pt)
PL (1) PL2229485T3 (pt)
PT (1) PT2229485E (pt)
WO (1) WO2009063080A1 (pt)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109826265A (zh) * 2019-01-08 2019-05-31 王美玲 一种单机组水压式挖泥船

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0916961D0 (en) * 2009-09-28 2009-11-11 Harris Nicholas Improvements in or relating to dredging and scouring
WO2012163865A2 (en) 2011-05-28 2012-12-06 John Simon Blight Improved heads for dredging
GB2491571A (en) * 2011-05-28 2012-12-12 John Simon Blight Dredging system with internal water channels
CN103112552A (zh) * 2011-11-16 2013-05-22 张瑞麟 疏浚冲淤船
CN105178379A (zh) * 2015-10-18 2015-12-23 陆璟璇 一种城市水利工程清淤装置
CN108222097A (zh) * 2018-01-29 2018-06-29 芜湖市皖南造船有限公司 一种挖泥船
CN112554262A (zh) * 2020-11-29 2021-03-26 李彦虎 一种具有搅拌功能的水利工程快速清淤装置
GB2616696B (en) * 2022-10-24 2024-06-05 Harwich Haven Authority Sediment agitating method and apparatus

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2318587A (en) * 1942-01-03 1943-05-11 Jr James D Andrews Subaqueous grading apparatus
US2978819A (en) * 1957-08-01 1961-04-11 Fairley Inc Shell dredger
FR1359325A (fr) 1963-03-14 1964-04-24 Drague automotrice porteuse, refouleuse et suceuse en marche
US4409746A (en) * 1981-02-05 1983-10-18 Conoco Inc. Vortex injection dredging apparatus and method
NL8300990A (nl) * 1983-03-18 1984-10-16 Ir Reijer Nicolaas Van Weezenb Werkwijze voor het verwijderen van slib of modder van de bodem van een watergebied.
US5285587A (en) * 1993-03-29 1994-02-15 Krenzler Leo M Underwater mining dredge
US5546682A (en) * 1994-10-05 1996-08-20 Skerry; Eric Sediment relocation machine
GB2359101A (en) * 2000-02-09 2001-08-15 Thomas Hasler Dredging Vessel
GB2427884A (en) * 2005-07-01 2007-01-10 Wayne Challis Propulsion dredging attachment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109826265A (zh) * 2019-01-08 2019-05-31 王美玲 一种单机组水压式挖泥船
CN109826265B (zh) * 2019-01-08 2021-04-16 王美玲 一种单机组水压式挖泥船

Also Published As

Publication number Publication date
DK2229485T3 (da) 2012-05-29
WO2009063080A1 (en) 2009-05-22
ATE544913T1 (de) 2012-02-15
EP2229485A1 (en) 2010-09-22
ES2382254T3 (es) 2012-06-06
GB0722577D0 (en) 2007-12-27
GB2454729A (en) 2009-05-20
PL2229485T3 (pl) 2012-07-31
PT2229485E (pt) 2012-05-17

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