WO2020145843A1 - Reversing and steering waterjet propulsion unit - Google Patents

Reversing and steering waterjet propulsion unit Download PDF

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Publication number
WO2020145843A1
WO2020145843A1 PCT/RU2019/000940 RU2019000940W WO2020145843A1 WO 2020145843 A1 WO2020145843 A1 WO 2020145843A1 RU 2019000940 W RU2019000940 W RU 2019000940W WO 2020145843 A1 WO2020145843 A1 WO 2020145843A1
Authority
WO
WIPO (PCT)
Prior art keywords
water conduit
reversing
propulsion unit
astern
head
Prior art date
Application number
PCT/RU2019/000940
Other languages
French (fr)
Inventor
Konstantin Vadimovich Govorov
Original Assignee
Konstantin Vadimovich Govorov
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 Konstantin Vadimovich Govorov filed Critical Konstantin Vadimovich Govorov
Publication of WO2020145843A1 publication Critical patent/WO2020145843A1/en

Links

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
    • B63H11/107—Direction control of propulsive fluid
    • B63H11/11—Direction control of propulsive fluid with bucket or clamshell-type reversing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
    • B63B1/18—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type
    • B63B1/22—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type with adjustable planing surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
    • B63B39/06—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water
    • B63B39/061—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water by using trimflaps, i.e. flaps mounted on the rear of a boat, e.g. speed boat
    • 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
    • B63H11/107—Direction control of propulsive fluid
    • B63H11/113—Pivoted outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/44—Steering or slowing-down by extensible flaps or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/48—Steering or slowing-down by deflection of propeller slipstream otherwise than by rudder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/50—Slowing-down means not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
    • B63B1/18—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type
    • B63B2001/183—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type having non-floating planing surfaces, e.g. attached skis or plate-shaped bodies

Definitions

  • the invention relates to the field of shipbuilding, in particular to reversing and steering devices of waterjet propelled ships.
  • a reversing and steering wateqet propulsion unit comprising a reversing flap pivotally hinged on a horizontal axis behind the duct is known.
  • the reversing device is mounted onto the portions of the waterjet propulsion unit (RU, Cl, No. 2534500, 2014).
  • a curved astern water conduit mounted on a horizontal axis (RU, Cl, No. 2659367, 29.06.2018) is the closest analogue to the claimed device.
  • the claimed invention is directed to increasing the propulsion unit efficiency by reduced hydrodynamic losses and simplified design.
  • the deflector accommodates a ship control pivot head
  • the astern water conduit is made tubular and directly mounted on the pivot head underneath outlet thereof by means of an eye attached to the outer surface of the pivot head and a bracket interacting with the lateral surface of the tubular solid water conduit, wherein, in operating position of the water conduit, the edge portion of the control head is located in the inner cavity of the curved water conduit.
  • the outlet end portion of the reversing tubular water conduit is made rectilinear.
  • the astern water conduit is designed integral with a hydraulic plate.
  • An annular cutting out is provided in the inner cavity of the end portion of the reversing water conduit, the inner cavity of the end portion in the operating position is in contact with the outer surface of the edge portion of the control head, the diameter of which is larger than the outer diameter of the pivot control head.
  • the claimed invention meets the patentability criterion of "novelty", because the search did not reveal a source of information from which a solution would be known that matches the set of features of an independent claim.
  • Fig. 1 shows a general view of the wateijet propulsion unit in the "ahead and astarboard" position
  • Fig. 2 is a general view in the "astern and aport” position
  • Fig. 3 is a longitudinal section at the time of moving ahead
  • Fig. 4 is a longitudinal section at the time of moving astern
  • Fig. 5 is an option of combining the water conduit with the hydraulic plate.
  • the claimed reversing and steering waterjet propulsion unit is mounted on the transom 1 of a river or sea ship and comprises a deflector 2 with a pivot head 3, on the outer surface of which a tubular reversing curved astern water conduit 4 is pivotally mounted, the output section 5 of the water conduit 4 is made rectilinear.
  • the water conduit 4 in cross section can be made of any shape: round, rectangular (square), oval, etc.
  • the water conduit 4 is placed under the outlet of the pivot head 3 by means of a pair of brackets 6 and eyes 7 hingedly connected to each other.
  • the head 3 provides a protrusion 8 interacting with a tie rod, cable, servodrive (not shown).
  • One of the brackets 6 is equipped with a lever 9 for controlling the water conduit 4, the lever 9 interacts with a cable, tie rod or servodrive (not shown), by means of which the water conduit 4 is rotated to change the "ahead/stop/astem" movement mode.
  • the end portion of the pivot head 3 at the time of rotating the water conduit 4 to move the ship astern is placed in the inner cavity of the end portion of the reversing water conduit 4.
  • a cutting out (groove) 10 with an elastic sealing gasket (not shown) is provided for a tighter connection of the pivot head 3 with the water conduit 4 in the inner end portion thereof.
  • the diameter of the annular cutting out of the water conduit 4 is slightly larger than the outer diameter of the control pivot head 3.
  • a hydraulic plate 11 is mounted at the lower end edges of the brackets 6, the hydraulic plate 11 is designed integral with the astern water conduit 4.
  • the hydraulic plate 11 can be located both below the astern water conduit 4, and can be integrated in the middle portion thereof, i.e. combined with each other.
  • Stiffening ribs 12 parallel to the longitudinal axis of the water conduit 4 are mounted on the lower surface of the hydraulic plate 11.
  • the hydraulic plate 11 is placed in the recess of ship's hydroski 13, the cantilever part of which extends beyond the transom 1.
  • the device operates as follows.
  • the head 3 When the ship moves forward by transmitting force to the protrusion 8 by the drive, the head 3 is rotated and, as a result, the ship maneuvers by controlling the thrust vector.
  • the stiffening ribs of the hydraulic plate 11 play the role of additional rudders, and the hydraulic plate 11 itself improves the hydrodynamic properties of the ship in the planing mode, the water conduit 4 having no contact with the outlet of the pivot head 3.
  • the water conduit 4 in the eye 7 is rotated by acting on the bracket 6 through the lever 9, thereby placing the groove 10 of the water conduit 4 on the outer surface of the end portion of the pivot head 3, the gap is sealed with an elastic gasket, thereby changing the direction of movement of the outgoing water flow from the deflector 2 of the propulsion unit to the direction of the bow of the ship.
  • the ship thus moves astern. Since the astern water conduit 4 is attached directly on the pivot head 3, the rotation of the pivot head 3 provides astern maneuvering by controlling the thrust vector, whereby the hydraulic plate 11 acts as a wave baffle.
  • the hydraulic plate 11 acts as a dynamic brake.
  • the middle position of the device corresponds to zero thrust at the time when the waterjet propulsion unit operates.
  • Trimming is performed as follows. In the planing mode of ship's movement, the operator, using the reverse control drive, smoothly changes the inclination angle of the hydraulic plate 11 to negative values, whereby the front of the hydraulic plate rises into the recess provided in the hull of the ship, and the rear of the hydraulic plate 11 falls beyond the overall cross section of the ship's hull, whereby the recess in the ship's hull forms a stem redan such that the incoming water flow creates excessive pressure at the rear of the hydraulic plate 11, thus providing a lifting force that is transmitted through the points of attachment of the reverse to the transom portion of the ship 1.
  • the dynamic braking mode is performed as follows.
  • the front of the hydraulic plate 11 goes beyond the overall cross section of the ship's hull, whereas the rear portion rises.
  • the hydraulic plate 11 with the front portion thereof captures the oncoming flow of water and directs it upward at an angle, thus providing a braking effect and negative lifting force that, through the mounts of the reverse, acts on the stem portion of the ship, thereby preventing the bow of the ship from deepening.

Abstract

The invention relates to the field of shipbuilding, in particular to reversing and steering devices of waterjet propelled ships. The reversing and steering waterjet propulsion unit comprises a deflector and a reversing curved astern water conduit mounted rotably in a vertical plane. The deflector accommodates a ship control pivot head, a reversing water conduit is made tubular and mounted directly on the pivot head underneath the outlet thereof by means of an eye attached to the outer surface of the pivot head and a bracket interacting with the lateral surface of the tubular solid water conduit. In the operating position of the water conduit, the edge portion of the control head is located in the inner cavity of the curved water conduit. An increase in the propulsion unit efficiency due to reduced hydrodynamic losses and simplification of the design are achieved.

Description

REVERSING AND STEERING WATERJET PROPULSION UNIT
The invention relates to the field of shipbuilding, in particular to reversing and steering devices of waterjet propelled ships.
A reversing and steering wateqet propulsion unit comprising a reversing flap pivotally hinged on a horizontal axis behind the duct is known. The reversing device is mounted onto the portions of the waterjet propulsion unit (RU, Cl, No. 2534500, 2014).
The disadvantages of the prior art solution are low efficiency and design complexity.
A curved astern water conduit mounted on a horizontal axis (RU, Cl, No. 2659367, 29.06.2018) is the closest analogue to the claimed device.
The disadvantages of the known solution are low efficiency due to hydrodynamic losses at the time of changing the direction of the propulsive jet when moving astern and design complexity.
The claimed invention is directed to increasing the propulsion unit efficiency by reduced hydrodynamic losses and simplified design.
Said technical results are achieved by the fact that, in the reversing and steering wateqet propulsion unit comprising a deflector and a reversed curved astern water conduit pivotally mounted in a vertical plane, the deflector accommodates a ship control pivot head, the astern water conduit is made tubular and directly mounted on the pivot head underneath outlet thereof by means of an eye attached to the outer surface of the pivot head and a bracket interacting with the lateral surface of the tubular solid water conduit, wherein, in operating position of the water conduit, the edge portion of the control head is located in the inner cavity of the curved water conduit.
The outlet end portion of the reversing tubular water conduit is made rectilinear.
The astern water conduit is designed integral with a hydraulic plate.
An annular cutting out is provided in the inner cavity of the end portion of the reversing water conduit, the inner cavity of the end portion in the operating position is in contact with the outer surface of the edge portion of the control head, the diameter of which is larger than the outer diameter of the pivot control head.
The claimed invention meets the patentability criterion of "novelty", because the search did not reveal a source of information from which a solution would be known that matches the set of features of an independent claim.
The implementation of the claimed invention does not contradict the well-known laws of physics of mechanics, and was also tested on prototypes of special equipment, therefore, one may confirm the compliance thereof with the patentability criterion of “industrial applicability”.
Since no known sources of information provide the practice of placing a water conduit on a pivot head such that pairing of the former with the outlet of the latter is provided for moving astern, the proposed technical solution meets the patentability criterion of“inventive step”.
Fig. 1 shows a general view of the wateijet propulsion unit in the "ahead and astarboard" position; Fig. 2 is a general view in the "astern and aport" position; Fig. 3 is a longitudinal section at the time of moving ahead; Fig. 4 is a longitudinal section at the time of moving astern; Fig. 5 is an option of combining the water conduit with the hydraulic plate.
The claimed reversing and steering waterjet propulsion unit is mounted on the transom 1 of a river or sea ship and comprises a deflector 2 with a pivot head 3, on the outer surface of which a tubular reversing curved astern water conduit 4 is pivotally mounted, the output section 5 of the water conduit 4 is made rectilinear. The water conduit 4 in cross section can be made of any shape: round, rectangular (square), oval, etc.
The water conduit 4 is placed under the outlet of the pivot head 3 by means of a pair of brackets 6 and eyes 7 hingedly connected to each other.
In order to turn a ship, the head 3 provides a protrusion 8 interacting with a tie rod, cable, servodrive (not shown).
One of the brackets 6 is equipped with a lever 9 for controlling the water conduit 4, the lever 9 interacts with a cable, tie rod or servodrive (not shown), by means of which the water conduit 4 is rotated to change the "ahead/stop/astem" movement mode.
The end portion of the pivot head 3 at the time of rotating the water conduit 4 to move the ship astern is placed in the inner cavity of the end portion of the reversing water conduit 4. For a tighter connection of the pivot head 3 with the water conduit 4 in the inner end portion thereof, a cutting out (groove) 10 with an elastic sealing gasket (not shown) is provided. The diameter of the annular cutting out of the water conduit 4 is slightly larger than the outer diameter of the control pivot head 3.
A hydraulic plate 11 is mounted at the lower end edges of the brackets 6, the hydraulic plate 11 is designed integral with the astern water conduit 4. The hydraulic plate 11 can be located both below the astern water conduit 4, and can be integrated in the middle portion thereof, i.e. combined with each other.
Stiffening ribs 12 parallel to the longitudinal axis of the water conduit 4 are mounted on the lower surface of the hydraulic plate 11. The hydraulic plate 11 is placed in the recess of ship's hydroski 13, the cantilever part of which extends beyond the transom 1.
The device operates as follows.
When the ship moves forward by transmitting force to the protrusion 8 by the drive, the head 3 is rotated and, as a result, the ship maneuvers by controlling the thrust vector. When moving ahead, the stiffening ribs of the hydraulic plate 11 play the role of additional rudders, and the hydraulic plate 11 itself improves the hydrodynamic properties of the ship in the planing mode, the water conduit 4 having no contact with the outlet of the pivot head 3.
If necessary, the water conduit 4 in the eye 7 is rotated by acting on the bracket 6 through the lever 9, thereby placing the groove 10 of the water conduit 4 on the outer surface of the end portion of the pivot head 3, the gap is sealed with an elastic gasket, thereby changing the direction of movement of the outgoing water flow from the deflector 2 of the propulsion unit to the direction of the bow of the ship. The ship thus moves astern. Since the astern water conduit 4 is attached directly on the pivot head 3, the rotation of the pivot head 3 provides astern maneuvering by controlling the thrust vector, whereby the hydraulic plate 11 acts as a wave baffle.
To implement the "STOP" mode, a partial rotation of the water conduit 4 in the eye 7 is performed, at this time the propulsion jets balance each other at the time when the jet propulsion unit operates.
When the hydraulic plate 11 is mounted at a negative angle, the hydraulic plate at the time of moving ahead performs the role of an adjustable trimmer.
In the process of changing the position of the device to astern movement position, a the time of moving ahead, the hydraulic plate 11 acts as a dynamic brake.
The middle position of the device corresponds to zero thrust at the time when the waterjet propulsion unit operates.
Trimming is performed as follows. In the planing mode of ship's movement, the operator, using the reverse control drive, smoothly changes the inclination angle of the hydraulic plate 11 to negative values, whereby the front of the hydraulic plate rises into the recess provided in the hull of the ship, and the rear of the hydraulic plate 11 falls beyond the overall cross section of the ship's hull, whereby the recess in the ship's hull forms a stem redan such that the incoming water flow creates excessive pressure at the rear of the hydraulic plate 11, thus providing a lifting force that is transmitted through the points of attachment of the reverse to the transom portion of the ship 1.
The dynamic braking mode is performed as follows. When changing the position of the reverse to the“zero” or“reverse” position in the planing mode of ship's movement, the front of the hydraulic plate 11 goes beyond the overall cross section of the ship's hull, whereas the rear portion rises. The hydraulic plate 11 with the front portion thereof captures the oncoming flow of water and directs it upward at an angle, thus providing a braking effect and negative lifting force that, through the mounts of the reverse, acts on the stem portion of the ship, thereby preventing the bow of the ship from deepening.

Claims

Claims
1. A reversing and steering waterjet propulsion unit comprising a deflector and a reversing curved astern water conduit mounted rotably in a vertical plane, wherein the deflector accommodates a ship control pivot head, the astern water conduit is made tubular and directly mounted on the pivot head underneath outlet thereof by means of an eye attached to the outer surface of the pivot head and a bracket interacting with the lateral surface of the tubular solid water conduit, wherein, in operating position of the water conduit, the edge portion of the pivot control head is located in the inner cavity of the curved water conduit.
2. A propulsion unit according to Claim 1, wherein the outlet end portion of the reversing tubular water conduit is made rectilinear.
3. A propulsion unit according to Claim 1, wherein the astern water conduit is designed integral with a hydraulic plate.
4. A propulsion unit according to Claim 1, wherein an annular cutting out is provided in the inner cavity of the end portion of the reversing water conduit, the inner cavity of the end portion portion in the operating position is in contact with the outer surface of the edge portion of the control head, the diameter of which is larger than the outer diameter of the pivot control head.
PCT/RU2019/000940 2019-01-11 2019-12-13 Reversing and steering waterjet propulsion unit WO2020145843A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2019100311 2019-01-11
RU2019100311A RU2701287C1 (en) 2019-01-11 2019-01-11 Reverse-steering water-jet propeller

Publications (1)

Publication Number Publication Date
WO2020145843A1 true WO2020145843A1 (en) 2020-07-16

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ID=68063408

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2019/000940 WO2020145843A1 (en) 2019-01-11 2019-12-13 Reversing and steering waterjet propulsion unit

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WO (1) WO2020145843A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004541A (en) * 1973-07-25 1977-01-25 Hydro-Tech Corporation Jet boat pump
US6547611B1 (en) * 1999-08-16 2003-04-15 Polaris Industries Inc. Electric reverse system for personal watercraft
US20030100231A1 (en) * 2001-10-24 2003-05-29 Tsuide Yanagihara Reverse thrust arrangement for small watercraft
US20080182463A1 (en) * 2006-09-01 2008-07-31 Luc St-Pierre Commonly actuated trim and reverse system for a jet propulsion watercraft
US9682757B1 (en) * 2016-01-29 2017-06-20 Brp Us Inc. Method for reversing a jet propelled watercraft
US20180050777A1 (en) * 2016-08-19 2018-02-22 Waimed Enterprises, LLC Closed tunnel system and directional device for outboard jet motors

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3143857A (en) * 1960-05-02 1964-08-11 Star Fire Marine Jet Company Combined forward and reverse steering device for jet propelled aquatic vehicles
JP3121333B2 (en) * 1989-08-03 2000-12-25 三信工業株式会社 Water injection propulsion device
RU2205774C1 (en) * 2002-05-06 2003-06-10 Федеральное государственное унитарное предприятие "Центральный научно-исследовательский институт им. акад. А.Н.Крылова" Water-jet propulsion and steering complex
RU2659367C1 (en) * 2017-03-16 2018-06-29 Акционерное общество "Зеленодольское проектно-конструкторское бюро" (АО "Зеленодольское ПКБ") Water-jet propeller reverse control device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004541A (en) * 1973-07-25 1977-01-25 Hydro-Tech Corporation Jet boat pump
US6547611B1 (en) * 1999-08-16 2003-04-15 Polaris Industries Inc. Electric reverse system for personal watercraft
US20030100231A1 (en) * 2001-10-24 2003-05-29 Tsuide Yanagihara Reverse thrust arrangement for small watercraft
US20080182463A1 (en) * 2006-09-01 2008-07-31 Luc St-Pierre Commonly actuated trim and reverse system for a jet propulsion watercraft
US9682757B1 (en) * 2016-01-29 2017-06-20 Brp Us Inc. Method for reversing a jet propelled watercraft
US20180050777A1 (en) * 2016-08-19 2018-02-22 Waimed Enterprises, LLC Closed tunnel system and directional device for outboard jet motors
US10618619B2 (en) * 2016-08-19 2020-04-14 Waimed Enterprises, LLC Closed tunnel system and directional device for outboard jet motors

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