EP2243697A2 - Schaukelbewegungsreduzierungsvorrichtung für Schiff - Google Patents

Schaukelbewegungsreduzierungsvorrichtung für Schiff Download PDF

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Publication number
EP2243697A2
EP2243697A2 EP10152137A EP10152137A EP2243697A2 EP 2243697 A2 EP2243697 A2 EP 2243697A2 EP 10152137 A EP10152137 A EP 10152137A EP 10152137 A EP10152137 A EP 10152137A EP 2243697 A2 EP2243697 A2 EP 2243697A2
Authority
EP
European Patent Office
Prior art keywords
damper
temperature
motor
path
reducing apparatus
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.)
Granted
Application number
EP10152137A
Other languages
English (en)
French (fr)
Other versions
EP2243697B1 (de
EP2243697A3 (de
Inventor
Hiroshi Takeuchi
Katsuya Umemura
Sadahiro Maeda
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Publication of EP2243697A2 publication Critical patent/EP2243697A2/de
Publication of EP2243697A3 publication Critical patent/EP2243697A3/de
Application granted granted Critical
Publication of EP2243697B1 publication Critical patent/EP2243697B1/de
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 
    • B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
    • B63B39/04—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using gyroscopes directly

Definitions

  • the present invention relates to an apparatus for reducing a swinging motion of a ship such as a rolling motion, a pitching motion and a yawing motion.
  • Japanese Patent No. 3,556,857 discloses a swinging motion reducing apparatus for reducing rolling, pitching and yawing motions of a ship.
  • the swinging motion reducing apparatus includes a motor, a flywheel that is driven by the motor, a gimbal mechanism that contains the flywheel, a support section for movably supporting the gimbal mechanism, a frictional damper for controlling a motion of the gimbal mechanism, a power supply for supplying electric power to the motor, and a control section.
  • the control section controls such that the power supply to the motor is stopped to prevent the swinging motion reducing apparatus from being damaged because of the motion of the gimbal mechanism exceeding a limitation of the specification.
  • An object of the present invention is to prevent a swinging motion reducing apparatus for a ship from being damaged.
  • a swing motion reducing apparatus for a ship includes a flywheel, a gimbal mechanism configured to rotatably support the flywheel, a motor configured to rotate the flywheel based on a drive power to be supplied; and a motor driver configured to supply the drive power to the motor.
  • a damper section is configured to brake a swing motion of the gimbal mechanism.
  • a safety unit controls the motor driver to stop the supply of the drive power to the motor when a temperature of the damper section is equal to or higher than a predetermined temperature.
  • a swinging motion reducing apparatus includes a swinging motion reducing apparatus body 10, a motor driver 20, a generator 30, and a safety unit 40.
  • the swinging motion reducing apparatus body 10 includes a motor 13, a damper 15A, and a damper 15B.
  • the generator 30 and the motor 13 are a 3-phase generator and a 3-phase motor, respectively.
  • the motor driver 20 includes an input terminal 21, an output terminal 22, a CM terminal 23, an X1 terminal 24, and a relay 25.
  • the input terminal 21 includes an R terminal, an S terminal, and a T terminal.
  • the output terminal 22 includes a U terminal, a V terminal, and a W terminal.
  • the relay 25 is provided between the input terminal 21 and the output terminal 22.
  • the relay 25 opens and closes a connection between the R terminal and the U terminal, a connection between the S terminal and the V terminal, and a connection between the T terminal and the W terminal.
  • the input terminal 21 is connected to the generator 30 via a breaker switch 31.
  • the output terminal 22 is connected to a power cable 13a of the motor 13.
  • the safety unit 40 includes a bimetal switch 41A provided for the damper 15A and a bimetal switch 41B provided for the damper 15B.
  • the bimetal switches 41A and 41B are in a close state initially, and monitor temperatures of the dampers 15A and 15B, respectively.
  • the bimetal switch 41A opens to set an OFF state when a temperature of the damper 15A increase to a temperature equal to or higher than a predetermined temperature.
  • the bimetal switch 41B opens to set an OFF state when the temperature of the damper 15B increase to a temperature equal to or higher than a predetermined temperature.
  • the CM terminal 23 is connected to the X1 terminal 24 via the bimetal switches 41A and 41B.
  • the connection between the CM terminal 23 and the X1 terminal 24 is in an ON state (a conduction state) when both of the bimetal switches 41A and 41B close, and the connection between the CM terminal 23 and the X1 terminal 24 is in an OFF state (a non-conduction state) when at least one of the bimetal switches 41A and 41B opens.
  • the relay 25 turns the connection between the input terminal 21 and the output terminal 22 to be in the ON state (closes the connection between the input terminal 21 and the output terminal 22) when the connection between the CM terminal 23 and the X1 terminal 24 is in the ON state. Also, the relay 25 turns the connection between the input terminal 21 and the output terminal 22 to be in the OFF state (opens the connection between the input terminal 21 and the output terminal 22) when the connection between the CM terminal 23 and the X1 terminal 24 is in the OFF state.
  • the motor driver 20 supplies a drive power to the motor 13 when the relay 25 keeps the connection between the input terminal 21 and the output terminal 22 in the ON state, and stops the supply of the drive power when the relay 25 turns the connection between the input terminal 21 and the output terminal 22 to be in the OFF state.
  • the swinging motion reducing apparatus body 10 includes the flywheel 11, the gimbal mechanism 12, the motor 13, a gimbal mechanism support section 14, and the dampers 15A and 15B.
  • the gimbal mechanism 12 supports the flywheel 11 so that the flywheel 11 can rotate around a rotation axis S1.
  • the motor 13 drives the flywheel 11.
  • the gimbal mechanism support section 14 supports the gimbal mechanism 12 so that the gimbal mechanism 12 can swing around a swing axis S2.
  • Each of the dampers 15A and 15B brakes the swinging motion of the gimbal mechanism 12 with a fluid resistance of a hydraulic oil.
  • the dampers 15A and 15B are rotary dampers.
  • the swing axis S2 is orthogonal to the rotation axis S1.
  • the gimbal mechanism support section 14 is fixed to a hull.
  • the bimetal switches 41A and 41B are attached to the outer sides of the dampers 15A and 15B, respectively.
  • a principle that the swinging motion reducing apparatus according to the present embodiment reduces the swinging motion of a ship will be described by exemplifying a case that a left or right direction axis (Pitch axis) of the hull is parallel to the swing axis S2.
  • the flywheel 11 is driven by the motor 13 at a high speed so as to have angular momentum H.
  • a gyrotorque T1 represented by an exterior product of the angular momentum H and the angular velocity ⁇ acts to the gimbal mechanism 12, and the gimbal mechanism 12 rolls around the swing axis S2.
  • a counter torque T2 acts to the hull via the gimbal mechanism support section 14.
  • the counter torque T2 is represented by an exterior product of the angular momentum H and the angular velocity ⁇ . Because the counter torque T2 acts to a direction opposite to the roll direction of the hull, the rolling motion in the roll direction of the hull is reduced.
  • the swinging motion reducing apparatus when used under an overload circumstance such as a case where a ship having the swinging motion reducing apparatus according to the present embodiment sails a high wave area, the gimbal mechanism 12 heavily swings so that the temperatures of the dampers 15A and 15B become high, and thus a seal member for sealing the hydraulic oil may be damaged. Since the gimbal mechanism 12 cannot be broken when the hydraulic oil leaks, the swinging motion reducing apparatus may be damaged.
  • the bimetal switch 41A opens to turn the connection between the CM terminal 23 and the X1 terminal 24 to be in the OFF state. Then, since the relay 25 turns the connection between the input terminal 21 and the output terminal 22 to be in the OFF state, the motor driver 20 automatically stops the supply of the drive power. Also, when the temperature of the damper 15B increases the predetermined temperature or more, the motor driver 20 automatically stops the supply of the drive power in the same manner as that of the damper 15A. That is, the safety unit 40 stops the supply of the drive power to the motor driver 20 when at least one of the dampers 15A and 15B exceeds the predetermined temperature. In this manner, the swinging motion reducing apparatus body 10 safely stops and the dampers 15A and 15B can be prevented from being damaged.
  • the temperatures of the damper 15A or 15B becomes high.
  • the present embodiment prevents the swinging motion reducing apparatus from continuing to operate under the condition of occurrence of the failure of the damper 15A or 15B. Accordingly, the damage of the damper 15A or 15B can be prevented and the damage of the swinging motion reducing apparatus body 10 is prevented.
  • the damper 15A or 15B cannot release the heat to circumference, and accordingly a braking performance of the damper 15A or 15B deteriorates.
  • the swinging motion reducing apparatus body 10 may be damaged. According to the present embodiment, since the swinging motion reducing apparatus is stopped in the case of a high atmosphere temperature, the damage of the swinging motion reducing apparatus body 10 can be prevented.
  • the bimetal switches 41A and 41B are respectively arranged on the outer sides of the dampers 15A and 15B, the swinging motion reducing apparatus can be easily assembled. Meanwhile, the bimetal switches 41A and 41B may be arranged in the dampers 15A and 15B, respectively.
  • the swinging motion reducing apparatus for a ship according to a second embodiment of the present invention will be described.
  • the swinging motion reducing apparatus according to the second embodiment of the present invention is configured by replacing the safety unit 40 in the first embodiment with a safety unit 50.
  • the safety unit 50 includes temperature sensors 51A and 51B such as a thermocouple or a thermistor, and a determining section 52.
  • the temperature sensors 51A and 51B are provided for the dampers 15A and 15B, respectively.
  • the temperature sensor 51A monitors a temperature of the damper 15A and outputs a signal indicating the temperature of the damper 15A to the determining section 52.
  • the temperature sensor 51B monitors a temperature of the damper 15B and outputs a signal indicating the temperature of the damper 15B to the determining section 52.
  • the determining section 52 is connected to the CM terminal 23 and the X1 terminal 24, respectively.
  • the determining section 52 determines whether or not the temperatures indicated by the signals sent from the temperature sensors 51A and 51B are higher than a predetermined temperature. When both of the signal sent from the temperature sensor 51A and the signal sent from the temperature sensor 51B indicate a temperature lower than the predetermined temperature, the determining section 52 turns the connection between the CM terminal 23 and the X1 terminal 24 to be in the ON state.
  • the determining section 52 turns the connection between the CM terminal 23 and the X1 terminal 24 to be in the OFF state. Accordingly, when at least one of the dampers 15A and 15B exceeds the predetermined temperature, the safety unit 50 stops the supply of the drive power to the motor 13.
  • the temperature sensors 51A and 51B are arranged on the outer sides of the dampers 15A and 15B, the swinging motion reducing apparatus can be easily assembled. Meanwhile, the temperature sensors 51A and 51B may be arranged in the dampers 15A and 15B, respectively.
  • the generator 30 and the motor 13 may be a single-phase generator and a single-phase motor, respectively.
  • the dampers 15A and 15B may be a frictional damper, a linear damper, or a hydraulic pump.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Vibration Prevention Devices (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Fluid-Pressure Circuits (AREA)
EP10152137A 2009-04-21 2010-01-29 Schaukelbewegungsreduzierungsvorrichtung für Schiff Active EP2243697B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009103158A JP4782216B2 (ja) 2009-04-21 2009-04-21 船舶の減揺装置

Publications (3)

Publication Number Publication Date
EP2243697A2 true EP2243697A2 (de) 2010-10-27
EP2243697A3 EP2243697A3 (de) 2011-11-30
EP2243697B1 EP2243697B1 (de) 2013-03-13

Family

ID=42270174

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10152137A Active EP2243697B1 (de) 2009-04-21 2010-01-29 Schaukelbewegungsreduzierungsvorrichtung für Schiff

Country Status (7)

Country Link
US (1) US20110030604A1 (de)
EP (1) EP2243697B1 (de)
JP (1) JP4782216B2 (de)
AU (1) AU2010200361B2 (de)
ES (1) ES2412269T3 (de)
NZ (1) NZ583020A (de)
TW (1) TWI383920B (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8776709B2 (en) 2012-06-22 2014-07-15 Honeywell International Inc. Apparatus and method for watercraft stabilization
WO2014136192A1 (ja) 2013-03-04 2014-09-12 三菱重工業株式会社 減揺装置及びそれを用いた船舶

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3556857B2 (ja) 1999-04-21 2004-08-25 三菱重工業株式会社 安全機構を有する減揺装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1183530A (en) * 1910-01-04 1916-05-16 Louis Brennan Means for imparting stability to unstable bodies.
US3576134A (en) * 1968-02-19 1971-04-27 Tetra Tech Gyroscopic stabilizer having an adjustable spring
DE1906836C3 (de) * 1969-02-12 1975-01-02 Siemens Ag, 1000 Berlin Und 8000 Muenchen Adaptivregeleinrichtung für einen Regelkreis
US3567134A (en) * 1969-09-09 1971-03-02 Rubbermaid Inc Dual purpose hose
US5628267A (en) * 1993-11-01 1997-05-13 Mitsubishi Jukogyo Kabushiki Kaisha Oscillation suppression device and ship provided with the same
JPH10244990A (ja) * 1997-03-05 1998-09-14 Mitsubishi Heavy Ind Ltd ジャイロ式減揺機
JP2000337433A (ja) * 1999-05-28 2000-12-05 Mitsubishi Heavy Ind Ltd Ｃｍｇ減揺機
JP3486405B2 (ja) * 2001-08-10 2004-01-13 三菱重工業株式会社 減揺装置
US6973847B2 (en) * 2003-06-04 2005-12-13 Gearloose Engineering, Inc. Gyroscopic roll stabilizer for boats
EP1663774A1 (de) * 2003-09-19 2006-06-07 Sea Gyro Pty Ltd. Schiffsstabilisationsvorrichtung und -verfahren
US7240630B2 (en) * 2003-10-08 2007-07-10 Marine Motion Control, Llc Gyrostabilizer for small boats
US7458329B2 (en) * 2004-03-25 2008-12-02 Exxonmobil Upstream Research Company Hydrogyro ship stabilizer and method for stabilizing a vessel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3556857B2 (ja) 1999-04-21 2004-08-25 三菱重工業株式会社 安全機構を有する減揺装置

Also Published As

Publication number Publication date
US20110030604A1 (en) 2011-02-10
NZ583020A (en) 2011-06-30
TW201040075A (en) 2010-11-16
JP2010256042A (ja) 2010-11-11
JP4782216B2 (ja) 2011-09-28
TWI383920B (zh) 2013-02-01
EP2243697B1 (de) 2013-03-13
AU2010200361B2 (en) 2011-04-21
ES2412269T3 (es) 2013-07-10
EP2243697A3 (de) 2011-11-30
AU2010200361A1 (en) 2010-11-04

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