US3681862A - Suction dredger having plural pumps and plural articulated pipe sections - Google Patents

Suction dredger having plural pumps and plural articulated pipe sections Download PDF

Info

Publication number
US3681862A
US3681862A US877141A US3681862DA US3681862A US 3681862 A US3681862 A US 3681862A US 877141 A US877141 A US 877141A US 3681862D A US3681862D A US 3681862DA US 3681862 A US3681862 A US 3681862A
Authority
US
United States
Prior art keywords
pump
suction
dredger
inlet
end section
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.)
Expired - Lifetime
Application number
US877141A
Other languages
English (en)
Inventor
Jan De Koning
Tiako Aaldrik Wolters
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.)
INGBUREAU VOOR SYSTEMS EN OCTR
Nv Ingenieursbureau Voor Systems En Octrooien Spanstaal
Original Assignee
INGBUREAU VOOR SYSTEMS EN OCTR
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 INGBUREAU VOOR SYSTEMS EN OCTR filed Critical INGBUREAU VOOR SYSTEMS EN OCTR
Application granted granted Critical
Publication of US3681862A publication Critical patent/US3681862A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/907—Measuring or control devices, e.g. control units, detection means or sensors

Definitions

  • a suction pipe is inserted into a body of sand below the bottom of a body of water to withdraw water-sand suspension having a desired concentration of sand in such suspension.
  • the sand is drawn in at very high concentration and at some level above this point water is separately introduced so that a desired concentration is obtained.
  • the suction pipe consists of at least two pipe parts swingably connected to each other. The maximum suction output of the submerged pump is obtained by swinging the frame supporting the pump into a vertical position.
  • the invention relates to an improvement of a suction dredger comprising a pump and a suction pipe which is connected to said pump and which has at least one first nozzle for spoil at its lower end and at least one second nozzle mainly for water between the pump and said lower end, wherein said pump is mounted on a frame movably suspended from a ships body which is lowerable and liftable together with said pump relatively to said ships body, at least said first suction nozzle being arranged at an end part of said suction pipe.
  • said end part of said suction pipe is movably connected with said frame supporting said submerged pump.
  • this pump cannot always be positioned at its maximum depth, at which maximum depth the pump has its greatest suction output, owing to the end part of the suction pipe being jammed in solid ground, for instance solid mud or clay covering the spoil or sand to be sucked up.
  • the invention has the object to provide a suction dredger in which this drawback is avoided.
  • the invention provides a suction dredger of the kind mentioned above, wherein said end part of the suction pipe communicates with an inlet part of said pump by means of an intermediate part of said suction pipe which is swingably connected to said inlet part as well as to said end part.
  • the intermediate part of the suction pipe consists of at least two parts swingably connected to each other.
  • the invention further has the object to provide a method of suction dredging particulate material below the bottom of a body of water, which comprises the steps of:
  • the pump is maintained at its maximum depth.
  • FIG. 1 is a preferred suction dredger according to the invention
  • FIG. 2 is another preferred suction dredger according to the invention and FIG. 3 is a part of the suction dredger of FIG. 2.
  • the suction dredger according to the invention of FIG. 1 comprises a ship's body 1, a lowerable and liftable supporting frame 26 swingably mounted about a horizontal axis 25 on the ships body 1, a pump 3 fixed to said frame 26.
  • the discharge pipe 2 of said pump 3 is swingably connected to the inlet pipe 44 of a pump 28 mounted in the ships body I.
  • the discharge pipe 2 is swingably connected about said axis 25.
  • the pressure side of the pump 28 communicates with a conveying pressure line 1 l.
  • the inlet pipe 27 of the pump 3 communicates through a flexible conduit 29 with an intermediate part 4 of the suction pipe 30, which in turn communicates through a flexible conduit 31 with an end part 24 of the suction pipe 30.
  • the intermediate part 4 is swingably connected to the inlet pipe 27 and the end part 24 by means of pivot hinges 32 and 33.
  • the frame 26 and the suction pipe 30 are suspended from the ships body I by means of winches l0 and 8, 9 and cables 7 and 5, 6 for adjustably lifting and lowering them.
  • the lower end of the end part 24 has a first suction nozzle 22 for sucking in mainly spoil 34 surrounding said lower end and being fluidized. This lower end is covered by a cage 21.
  • a second suction nozzle 15 for taking in mainly water is provided in the intermediate part 4, the quantity of water taken in being adjustable by adjusting the flow area of suction nozzle 15 by means of a slide remotely controlled from the ships body for controlling the concentration of spoil in the spoil-water mixture sucked up by the pump 3.
  • the value of this concentration is measured by means of a concentration sensitive pick up 45 incorporated in the intermediate part 4.
  • the pump 3 is submerged at the maximum depth obtained by lowering the frame 2 into the vertical or substantially vertical position, in order to use the maximum suction output of this pump 3.
  • [t can be positioned at its maximum depth corresponding with vertical position of frame 26 independently from the position of the end part 24, 24'.
  • FIG. I shows that the end part 24 of the suction pipe is jammed in a narrow gap 13 of solid ground 18.
  • FIGS. 2 and 3 corresponds with that of FIG. 1 with the exception that the intermediate part 4 consists of two parts 40 and 4b instead of one rigid part, and that the second suction nozzle 15 is provided in the end part 24 in a particular way instead of in the intermediate part 4.
  • the intermediate parts 4a and 4b communicate with each other through a flexible conduit 37 and are swingably connected to each other by means of a pivot hinge 33.
  • the intermediate parts 40 and 4b are suspended from the ships body 1 by means of winches 9a and 9b and cables 6a and 6b.
  • the end part 24 (FIG. 2) consists of an inner tube 23 communicating with the intermediate part 4, a pipe 16 telescopically slidable relatively to the inner pipe 23 by means of a remotely adjustable hydraulic jack 38 and of a jacket 17 surrounding the inner pipe 23 and the slidable pipe 16, and being connected to the inner pipe 23.
  • the jacket 17 is provided with water inlets 39 at its upper end and with a first suction nozzle 22 for spoil at its lower end. Water 40 entering the jacket 17 through inlets 39 flows between jacket 17 and pipes 23 and 16 downwards and enters the slidable pipe 16 through a periphery gap between jacket 17 and the lower edge of slidable pipe 16, said gap forming the second suction nozzle for water.
  • This water and the spoil entering the jacket 17 through the first suction nozzle 22 forms a water-spoil-mixture sucked up by pump 3.
  • the lower edge of the slidable pipe 16 is kept in the vicinity of the level to which the spoil enters the jacket owing to suction of pump 3 and owing to the pressure available in the fluidized spoil 42 at the outside of the suction pipe 30. in the method according to the invention this pressure is picked up by means of pressure sensitive pick up 20.
  • the distance between the first suction nozzle 22 and the second suction nozzle 15 or the lower end of slidable pipe 16 is adjusted in dependence on the pressure picked up by means of pick up or in dependence on the measured value of the concentration picked up by means of above mentioned concentration sensitive pick up 45.. This distance is adjusted by means of hydraulic jack 38.
  • the pressure picked up by pick up 20 is about equal to the sum of the weights of spoil column l-l, and water column [-l,,.
  • the supporting frame 26 can be disposed vertically or substantially vertically irrespective of the position of the end part 24.
  • a suction dredger assembly comprising in combination:
  • suction pipe means connected to the inlet of said second pump for inducting dredger spoil and forming a suspension thereof in water which is delivered to said second pump, said suction pipe means comprising a rigid free end section adapted to be inserted deeply into an underwater body of dredger spoil and an intermediate section extending between said end section above the level of dredger spoil and the inlet of said second pump, said intermediate section being swingably connected both to said end section and to the inlet of said second pump whereby said frame means may be lowered at least substantially to its maximum depth without requiring movement of said end section.
  • suction pipe means presents a first suction nozzle at the free end of said end section and a second suction noule within said end section in selectively spaced relation to said first suction nozzle to effect said formation of suspension.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Cleaning Or Clearing Of The Surface Of Open Water (AREA)
  • Jet Pumps And Other Pumps (AREA)
US877141A 1968-11-20 1969-11-17 Suction dredger having plural pumps and plural articulated pipe sections Expired - Lifetime US3681862A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6816590A NL6816590A (enrdf_load_stackoverflow) 1968-11-20 1968-11-20

Publications (1)

Publication Number Publication Date
US3681862A true US3681862A (en) 1972-08-08

Family

ID=19805212

Family Applications (1)

Application Number Title Priority Date Filing Date
US877141A Expired - Lifetime US3681862A (en) 1968-11-20 1969-11-17 Suction dredger having plural pumps and plural articulated pipe sections

Country Status (4)

Country Link
US (1) US3681862A (enrdf_load_stackoverflow)
DE (1) DE1957777C3 (enrdf_load_stackoverflow)
GB (1) GB1284588A (enrdf_load_stackoverflow)
NL (1) NL6816590A (enrdf_load_stackoverflow)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3748760A (en) * 1970-12-28 1973-07-31 Schuttgutfoerdertechnik Ag Dredging machinery with swinging double ended scoop
US3777376A (en) * 1972-02-04 1973-12-11 Ellicott Machine Corp Articulated ladder construction for cutterhead dredge
US3826023A (en) * 1972-01-28 1974-07-30 Koning J De Wave motion compensating assembly for suction dredger
US3828451A (en) * 1972-01-28 1974-08-13 Ballast Nedam Groep Nv Ducting system for suction dredgers having pivotally connected tube lengths
US3893249A (en) * 1973-02-02 1975-07-08 Tjako Aaldrik Wolters Suction dredger with swell compensation
US3949496A (en) * 1972-01-28 1976-04-13 Konig Jan De Wave compensating system for suction dredgers
US3990379A (en) * 1973-08-22 1976-11-09 N.V. Industrieele Handelscombinatie Holland Dredging apparatus
US4020573A (en) * 1974-02-25 1977-05-03 Ballast-Nedam Group N.V. Method and device for sucking up a solid substance from a stock
US4083135A (en) * 1975-04-15 1978-04-11 Ballast-Nedam Groep, N.V. Flexible connecting arrangement for suction dredgers
US4175342A (en) * 1972-01-28 1979-11-27 Goyo Ballast Company Ltd. Suction dredger
US4295286A (en) * 1980-04-08 1981-10-20 Ihc Holland N.V. Support frame for motor, pump and suction tube of a suction dredger
US4352250A (en) * 1979-12-12 1982-10-05 Koninklijke Bos Kalis Westminster Group N.V. Suction dredger installation
US4470208A (en) * 1981-10-22 1984-09-11 Hendrikus Van Berk Dredge with adjustable bottom support for suction pipe and method
US4790446A (en) * 1982-09-13 1988-12-13 Pivot Masters, Inc. Floating roof drain system
DE19546845B4 (de) * 1994-12-20 2004-04-29 Ihc Holland N.V. Saugbaggerschiff mit einer an einem Kabel aufgehängten Saugvorrichtung, die mit einem Dünungskompensator versehen ist
US6797219B1 (en) 2000-11-28 2004-09-28 Steelcase Development Corporation Method for manufacture of floor panels
RU2272146C1 (ru) * 2005-04-18 2006-03-20 Николай Игоревич Бабичев Установка для подводной гидродобычи полезных ископаемых
RU2324035C1 (ru) * 2006-11-28 2008-05-10 Владимир Васильевич Мельников Эжекторное грунтозаборное устройство
US20090100724A1 (en) * 2007-10-18 2009-04-23 Oceaneering International, Inc. Underwater Sediment Evacuation System
US20130269817A1 (en) * 2012-04-12 2013-10-17 Hitachi, Ltd. Pump suction pipe

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7704643A (nl) * 1977-04-28 1978-10-31 Bos Kalis Westminster Zuigbuisstandregeling.
DE10117156C2 (de) * 2001-04-05 2003-11-06 Habermann A Gmbh & Co Kg Schwimmbagger
DE102007018882A1 (de) * 2007-04-19 2008-10-23 Arthur Habermann Gmbh & Co. Kg Schwimmbagger

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3748760A (en) * 1970-12-28 1973-07-31 Schuttgutfoerdertechnik Ag Dredging machinery with swinging double ended scoop
US3826023A (en) * 1972-01-28 1974-07-30 Koning J De Wave motion compensating assembly for suction dredger
US3828451A (en) * 1972-01-28 1974-08-13 Ballast Nedam Groep Nv Ducting system for suction dredgers having pivotally connected tube lengths
US3949496A (en) * 1972-01-28 1976-04-13 Konig Jan De Wave compensating system for suction dredgers
US4175342A (en) * 1972-01-28 1979-11-27 Goyo Ballast Company Ltd. Suction dredger
US3777376A (en) * 1972-02-04 1973-12-11 Ellicott Machine Corp Articulated ladder construction for cutterhead dredge
US3893249A (en) * 1973-02-02 1975-07-08 Tjako Aaldrik Wolters Suction dredger with swell compensation
US3990379A (en) * 1973-08-22 1976-11-09 N.V. Industrieele Handelscombinatie Holland Dredging apparatus
US4020573A (en) * 1974-02-25 1977-05-03 Ballast-Nedam Group N.V. Method and device for sucking up a solid substance from a stock
US4083135A (en) * 1975-04-15 1978-04-11 Ballast-Nedam Groep, N.V. Flexible connecting arrangement for suction dredgers
US4352250A (en) * 1979-12-12 1982-10-05 Koninklijke Bos Kalis Westminster Group N.V. Suction dredger installation
US4295286A (en) * 1980-04-08 1981-10-20 Ihc Holland N.V. Support frame for motor, pump and suction tube of a suction dredger
US4470208A (en) * 1981-10-22 1984-09-11 Hendrikus Van Berk Dredge with adjustable bottom support for suction pipe and method
US4790446A (en) * 1982-09-13 1988-12-13 Pivot Masters, Inc. Floating roof drain system
DE19546845B4 (de) * 1994-12-20 2004-04-29 Ihc Holland N.V. Saugbaggerschiff mit einer an einem Kabel aufgehängten Saugvorrichtung, die mit einem Dünungskompensator versehen ist
US6797219B1 (en) 2000-11-28 2004-09-28 Steelcase Development Corporation Method for manufacture of floor panels
RU2272146C1 (ru) * 2005-04-18 2006-03-20 Николай Игоревич Бабичев Установка для подводной гидродобычи полезных ископаемых
RU2324035C1 (ru) * 2006-11-28 2008-05-10 Владимир Васильевич Мельников Эжекторное грунтозаборное устройство
US20090100724A1 (en) * 2007-10-18 2009-04-23 Oceaneering International, Inc. Underwater Sediment Evacuation System
US7621059B2 (en) * 2007-10-18 2009-11-24 Oceaneering International, Inc. Underwater sediment evacuation system
US20130269817A1 (en) * 2012-04-12 2013-10-17 Hitachi, Ltd. Pump suction pipe
US9334885B2 (en) * 2012-04-12 2016-05-10 Hitachi, Ltd. Pump suction pipe

Also Published As

Publication number Publication date
DE1957777B2 (de) 1974-02-14
DE1957777A1 (de) 1970-06-04
DE1957777C3 (de) 1974-09-12
GB1284588A (en) 1972-08-09
NL6816590A (enrdf_load_stackoverflow) 1970-05-22

Similar Documents

Publication Publication Date Title
US3681862A (en) Suction dredger having plural pumps and plural articulated pipe sections
US3248812A (en) Collector and hoist for aggregates
NL2007072C2 (en) Drag head and trailing suction hopper dredger.
GB2097839A (en) Device for burying conduits laid on sea beds and for digging up conduits buried in sea beds
US3857651A (en) Pumping units for cyclonic elevator
CA1092686A (en) Method and control system for controlling a suspended implement on variations of the position of the implement in relation to a suspension point
EP0004378B1 (en) Apparatus for the subaqueous entrenching of pipes
JP3763789B2 (ja) 浮泥除去システム
EP0009516A1 (en) Method and device for maintaining tools at a level below a water surface
EP0000075A1 (en) Dredging vessel
EP0079103B1 (en) Dredging apparatus
EP3418452A1 (en) Mechanized, remote controlled, guided lowering of a pneumatic caisson
US3611595A (en) Suction dredger and method of suction dredging
EP0078563B1 (en) Method for suctioning submerged bottom material and a system for carrying out said method
US4217709A (en) Submarine sand sampler
US3853176A (en) Well cleaning apparatus
US20030154634A1 (en) Automatic dredge system and method of operation
CN207685885U (zh) 一种具有铰刀支架提升装置的绞吸挖泥船
US1327651A (en) Hydraulic dredging apparatus
US4429476A (en) Self-immersing jet pump
KR20110117453A (ko) 해상용 오니 인양장치
JPS57205635A (en) Dredging work and water jetting device therefor
JPS62284831A (ja) エアリフト式浚渫装置
US3589040A (en) Mechanism for anticipating the concentration of sand in a dredging suspension
CN210440083U (zh) 一种潜水行走清淤泵车