US3835805A - Thruster unit - Google Patents

Thruster unit Download PDF

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Publication number
US3835805A
US3835805A US00366777A US36677773A US3835805A US 3835805 A US3835805 A US 3835805A US 00366777 A US00366777 A US 00366777A US 36677773 A US36677773 A US 36677773A US 3835805 A US3835805 A US 3835805A
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US
United States
Prior art keywords
deflector
passage
vertical
pump
assembly
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
US00366777A
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English (en)
Inventor
O Slade
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.)
SAMUEL J WHITE AND CO Ltd
Original Assignee
SAMUEL J WHITE AND 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 SAMUEL J WHITE AND CO Ltd filed Critical SAMUEL J WHITE AND CO Ltd
Application granted granted Critical
Publication of US3835805A publication Critical patent/US3835805A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H11/00—Marine propulsion by water jets
    • B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
    • B63H11/10—Marine propulsion by water jets the propulsive medium being ambient water having means for deflecting jet or influencing cross-section thereof
    • B63H11/101—Marine propulsion by water jets the propulsive medium being ambient water having means for deflecting jet or influencing cross-section thereof having means for deflecting jet into a propulsive direction substantially parallel to the plane of the pump outlet opening
    • B63H11/102—Marine propulsion by water jets the propulsive medium being ambient water having means for deflecting jet or influencing cross-section thereof having means for deflecting jet into a propulsive direction substantially parallel to the plane of the pump outlet opening the inlet opening and the outlet opening of the pump being substantially coplanar
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H11/00—Marine propulsion by water jets
    • B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
    • B63H11/04—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
    • B63H11/08—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type

Definitions

  • ABSTRACT This invention is a bow thruster for a ship and consists of a design enabling the movable components to be easily withdrawn for repair or replacement.
  • a rotary pump and a rotary deflector each consisting of a rotor and a stator are each a slide fit in a corresponding vertical passage in a unitary housing which is a permanent fixture in the ships hull, together with a cross passage joining the vertical passages at the top. Either the pump, or the deflector, or both, can be slid out of its vertical passage for maintenance and that can be done from above without having to go into dry dock.
  • This invention relates to a thruster unit for a ship and one example is to provide a thruster unit which is particularly simple to disassemble for maintenance purposes. For example some previously known thruster units required access from the bottom of the hull for maintenance purposes which frequently necessitated using a dry dock but one object of the present invention is to enable the components that are likely to require maintenance to be removable from within the ship.
  • a thruster unit for a ship comprises a unitary housing defining a pair of side by side, open ended vertical passages with a transverse passage joining them near their respective upper ends and a pump assembly removably fitted into one vertical passage from its upper end and a deflector assembly fitted into the other vertical passage from its upper end.
  • the housing can be built into the hull possibly by welding or bolting to a plate fitted into an elongated hole in the bottom of the hull and then the pump assembly and the deflector assembly respectively can be simply lowered into the respective vertical passages and secured in position.
  • Drives and lubricating means will be at the upper end and can simply be disconnected prior to withdrawal of the complete assembly upwards from the vertical passage if maintenance is necessary.
  • either or both the pump assembly and the deflector assembly comprise a rotor mounted for rotation in a stator which can be slide fitted in the corresponding vertical passage. This avoids the problem of having to be sealed between openings of the vertical passage and the assembly.
  • the pump or deflector or both can be fitted with curved guide plates forming a part of the stator so that water which is pumped from one vertical passage to the other through the transverse passage is turned simply through the two right angles without excessive losses.
  • FIGURE is a horizontal section of a bow thruster unit for a barge embodying the invention.
  • the bow thruster unit consists essentially of three components, a pump assembly 11, a deflector assembly 12 and the housing assembly 13.
  • the housing assembly is carried on a thick steel plate 14 which fits into a corresponding elongated hole cut in the flat bottom 15 of the hull of the barge and welded into place
  • the plate 14 has two circular holes or openings immediately below a pair of hollow cylindrical members 16 and 17 defining vertical passage which extend vertically side by side, being welded at their bottom edges at 18 to the openings in the plate 14.
  • the members 16 and 17 are interconnected near their upper ends by a short transverse cylinder 19 welded around corresponding opposed openings in the sides of the passages.
  • This housing assembly thus defines a pas sage for water to flow upwards in the member 16, horizontally through the passage 19, and downwards in the member 17.
  • the pump assembly 11 can be slid vertically into the member 16 and it comprises a rotor on a shaft 21 carrying a pump 22 and a stator sleeve 23 which is a slide fit at 24 in the lower end of the member 16.
  • the assembly 11 includes a top plate 25 which is bolted around the top of the member 16 and includes lubricating and bearing arrangements and also three curved guide plates 26 and stiffenerplates 27 which form a part of the stator assembly welded around a tube 28 within which the shaft 21 rotates and which act to turn water pumped upwardly by the pump 22 simply through an angle of into the horizontal passage 19.
  • the lower end of the member 16 is closed by a protective grill 29 but this is not in contact with the pump assembly 11.
  • the deflector assembly 12 is generally similar to the pump assembly 11 except that at the bottom end of its shaft 31 it carries a rotatable deflector ring 32 consisting of deflector plates which can discharge water flowing downwards in the member 17 to have a horizontal component of movement which is in any selected direction in the horizontal plane so that the thrust produced by the unit can be in a direction chosen by appropriate rotation of the shaft 31. It should be noted that the deflector 32 can slide with clearance within the bottom end of the member 17 and that the part 33 of the plate 14 which surrounds the deflector 32 is bevelled to define one side of the discharge passage.
  • a thruster unit for a ship which comprises: a unitary housing defining two vertical, open-ended cylindrical passages adapted to receive a pump assembly and a deflector assembly respectively and a transverse passage joining the two vertical passages near their respective upper ends; means for mounting said housing within the hull of said ship with the lower ends of said cylindrical passages open through the bottom of the ship; a pump assembly; means for removably fitting said pump assembly into one of the vertical passages from the upper end thereof, said pump assembly being adapted to pump water from the open lower end of the said one vertical passage through said transverse passage to the other of said vertical passages; a deflector assembly; means for removably fitting said deflector assembly into said other of the vertical passages from the upper end thereof, said deflector assembly being adapted to impart a horizontal component of motion in a selected direction to water emerging from the lower end of the said other vertical passage under the influence of the pump assembly, the pump assembly and the deflector assembly each including a stator adapted to be slidably fitted in the stat
  • said housing hull mounting means includes a mounting plate integral with said housing, said plate being adapted to be fitted into a corresponding hole in the bottom of the hull of a ship.
  • a thruster unit in which the stators of the pump assembly and of the deflector assembly each include curved guide plates for turning the flow of water between its respective vertical passage and the transverse passage without excessive energy losses.
  • a thruster unit for a ship which comprises: a mounting plate adapted to be fitted into a corresponding hole in the bottom of the hull of a ship; a unitary housing integral with the mounting plate, the housing defining two, side by side vertical cylindrical passages having open lower and upper ends and a transverse passage joining the two passages adjacent their upper ends; pump means removably fitted into one of the vertical passages so as to be removable through the upper end thereof; drive means for the pump means, said pump drive means being positioned above the upper end of said pump passage; deflector means removable fitted into the other of the vertical passages so as to be removable through the upper end thereof, and drive means for the deflector means, said deflector drive means being positioned above the upper end of said deflector passage, whereby water may be pumped by said pump means from the lower end of the said one passage through the transverse passage to the deflector means, the deflector means serving to impart to the water emerging therefrom a horizontal component of motion in a selected direction.
  • a thruster unit in which the pump means comprises: a stator adapted to be slidably fitted in the said one vertical passage; curved guide plates for turning water between the said one vertical passage and the transverse passage without excessive losses; and a rotor mounted for rotation in the stator.
  • a thruster unit in which the deflector means comprises: a stator adapted to be slidably fitted in the other said vertical passage; curved guide plates for turning water between the transverse passage and the other said vertical passage without excessive losses; and a rotor mounted for rotation in the stator.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US00366777A 1972-06-05 1973-06-04 Thruster unit Expired - Lifetime US3835805A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2608072A GB1382126A (en) 1972-06-05 1972-06-05 Thruster unit for a ship

Publications (1)

Publication Number Publication Date
US3835805A true US3835805A (en) 1974-09-17

Family

ID=10238038

Family Applications (1)

Application Number Title Priority Date Filing Date
US00366777A Expired - Lifetime US3835805A (en) 1972-06-05 1973-06-04 Thruster unit

Country Status (7)

Country Link
US (1) US3835805A (de)
BE (1) BE800498A (de)
CA (1) CA971046A (de)
DE (1) DE2328555A1 (de)
FR (1) FR2187602B1 (de)
GB (1) GB1382126A (de)
NL (1) NL7307761A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5547996A (en) * 1978-09-28 1980-04-05 Mitsui Eng & Shipbuild Co Ltd Slow-speed steering device of working ship
US9193427B1 (en) * 2015-04-07 2015-11-24 Gulf Coast Shipyard Group, Inc. Floating vessel with appendages for reduced vibration and increased thruster capacity
NL2021426B1 (en) * 2018-08-03 2020-02-12 Veth Propulsion B V A method of providing a watercraft with a thruster; a thruster unit, and a watercraft.
CN112810787A (zh) * 2020-10-12 2021-05-18 南京高精船用设备有限公司 一种船舶用推进系统
CN115009499A (zh) * 2022-06-17 2022-09-06 沪东中华造船(集团)有限公司 一种锁轴盘对中方法及锁轴盘装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0024443A1 (de) * 1979-08-23 1981-03-11 Machinefabriek en Reparatiebedrijf Lips-Keller B.V. Als Einbaueinheit konstruierte Einrichtung zum Steuern eines Schiffsbuges
GR75264B (de) * 1980-06-19 1984-07-13 Schottel Werft

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2213611A (en) * 1938-05-09 1940-09-03 Ronning Adolph Boat propelling and stabilizing apparatus
US3082732A (en) * 1960-12-29 1963-03-26 Richard C Stallman Water jet motor for boats

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB210930A (en) * 1922-12-14 1924-02-14 James Herbert Wainwright Gill Improvements in or relating to the manoeuvring or steering of ships and other vessels

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2213611A (en) * 1938-05-09 1940-09-03 Ronning Adolph Boat propelling and stabilizing apparatus
US3082732A (en) * 1960-12-29 1963-03-26 Richard C Stallman Water jet motor for boats

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5547996A (en) * 1978-09-28 1980-04-05 Mitsui Eng & Shipbuild Co Ltd Slow-speed steering device of working ship
US9193427B1 (en) * 2015-04-07 2015-11-24 Gulf Coast Shipyard Group, Inc. Floating vessel with appendages for reduced vibration and increased thruster capacity
NL2021426B1 (en) * 2018-08-03 2020-02-12 Veth Propulsion B V A method of providing a watercraft with a thruster; a thruster unit, and a watercraft.
CN112810787A (zh) * 2020-10-12 2021-05-18 南京高精船用设备有限公司 一种船舶用推进系统
CN115009499A (zh) * 2022-06-17 2022-09-06 沪东中华造船(集团)有限公司 一种锁轴盘对中方法及锁轴盘装置
CN115009499B (zh) * 2022-06-17 2024-06-11 沪东中华造船(集团)有限公司 一种锁轴盘对中方法及锁轴盘装置

Also Published As

Publication number Publication date
CA971046A (en) 1975-07-15
FR2187602B1 (de) 1976-04-23
GB1382126A (en) 1975-01-29
NL7307761A (de) 1973-12-07
FR2187602A1 (de) 1974-01-18
DE2328555A1 (de) 1973-12-20
BE800498A (fr) 1973-12-05

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