CN107600354B - Turbulent flow system for reducing ship rolling motion - Google Patents
Turbulent flow system for reducing ship rolling motion Download PDFInfo
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- CN107600354B CN107600354B CN201710926134.XA CN201710926134A CN107600354B CN 107600354 B CN107600354 B CN 107600354B CN 201710926134 A CN201710926134 A CN 201710926134A CN 107600354 B CN107600354 B CN 107600354B
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- spoiler
- ship
- servo motor
- angular displacement
- driving mechanism
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
Abstract
A turbulence system for reducing ship rolling motion belongs to the technical field of ship resistance reduction and stabilization. The device comprises a spoiler, a servo motor, a driving mechanism and a control system. The servo motor is connected with the eccentric wheel through the transmission shaft, and the eccentric wheel rotates to be pushed by the roller and the spoiler makes reciprocating motion under the action of the reset spring. The control system comprises a motion measurement sensor, a control platform and a data acquisition system, wherein the control platform processes angular displacement data measured by the gyroscope according to a relation between the set extending length of the spoiler and the angular displacement of the ship body to obtain the real-time extending length of the spoiler, and then the servo motor is controlled to move the spoiler to the set extending length meeting the angular displacement of the ship body through the driving mechanism. The device provides the spoiler for reducing the rolling motion of the ship, can simultaneously realize drag reduction and rolling reduction, is simple and convenient to install, can obviously improve the safety and the rapidity of the ship during navigation, and has good commercial and military applications.
Description
Technical Field
The invention relates to a turbulence system for reducing ship rolling motion, and belongs to the technical field of ship resistance reduction and stabilization.
Background
Rapidity and seakeeping are one of the important balance for measuring the sailing performance of modern ships, and the advantages and disadvantages of the rapidity and seakeeping are directly determined on economy, safety and suitability. The ship can generate larger wave-making resistance and swinging motion during high-speed navigation. The increase in drag has a very detrimental effect on the rapidity of the vessel. In a rolling motion, roll affects the vessel most unfavorably. When the roll is too severe, it poses serious challenges to the safety and comfort of the cargo, crewman, and the utility of the weapon equipment is also greatly reduced.
In order to solve the two problems, the existing drag reduction modes mainly comprise a spoiler, a wave pressing plate, bubble drag reduction and the like, but the anti-rolling effect is limited; the rolling motion is reduced by adding attachments such as stabilizer fins, bilge keels, stabilizer tanks and the like. These appendages can effectively play a role in stabilizing the roll, but increase the resistance of the ship when sailing. It is therefore necessary to develop a marine installation that combines drag reduction and roll reduction and is easy to install and maintain.
Disclosure of Invention
In order to overcome the problems in the prior art, the invention provides a spoiler system for reducing the rolling motion of a ship, which is simple in structure, and can reduce the rolling motion of the ship while reducing the navigation resistance of the ship.
The technical scheme adopted by the invention is as follows: the utility model provides a reduce vortex system of boats and ships roll motion, it includes a spoiler and a safety cover, and it still includes a servo motor, a actuating mechanism and a control system, the safety cover adopts the recess structure of installation actuating mechanism and spoiler, actuating mechanism contains eccentric wheel, push rod and reset spring, and the push rod passes fixed bearing and spoiler connection after sheathes in reset spring, and servo motor connects the eccentric wheel through the transmission shaft, and the eccentric wheel is rotatory to promote the push rod to reciprocate under reset spring's effect through the roller; the control system comprises a motion measurement sensor, a control platform and a data acquisition system which are electrically connected with each other, the control platform is electrically connected with the servo motor through wires, the motion measurement sensor comprises a velocimeter for measuring the navigational speed of the ship and a gyroscope for rolling angular displacement, the control platform processes angular displacement data measured by the gyroscope according to a relational expression between a spoiler set extension length and a ship body angular displacement to obtain a real-time spoiler extension length, and then the servo motor is controlled to move the spoiler to the set extension length meeting the ship body angular displacement through a driving mechanism.
The number of the spoilers is two, and the spoilers are symmetrically arranged at the edge of the ship tail sealing plate.
The shape of the spoiler and the shape of the protective cover are consistent with the shape of the bottom of the tail sealing plate.
The beneficial effects of the invention are as follows: the spoiler system for reducing the rolling motion of the ship comprises a spoiler, a servo motor, a driving mechanism and a control system. The servo motor is connected with the eccentric wheel through the transmission shaft, and the eccentric wheel rotates to be pushed by the roller and the spoiler makes reciprocating motion under the action of the reset spring. The control system comprises a motion measurement sensor, a control platform and a data acquisition system, wherein the control platform processes angular displacement data measured by the gyroscope according to a relation between the set extending length of the spoiler and the angular displacement of the ship body to obtain the real-time extending length of the spoiler, and then the servo motor is controlled to move the spoiler to the set extending length meeting the angular displacement of the ship body through the driving mechanism. The system provides the spoiler for reducing the rolling motion of the ship, can simultaneously realize drag reduction and rolling reduction, is simple and convenient to install, can obviously improve the safety and the rapidity of the ship during navigation, and has good commercial and military applications.
Drawings
Fig. 1 is a schematic structural view of a spoiler system for reducing rolling motions of a ship.
Fig. 2 is A-A view of fig. 1.
FIG. 3 is a schematic view of the spoiler shown extended.
Fig. 4 is a layout of two spoiler arrangements.
Fig. 5 is a state diagram of the spoiler when the ship leans left.
Fig. 6 is a state diagram of the spoiler when the ship leans right.
In the figure: 1. the motion measuring device comprises a motion measuring sensor 2, a control platform 3, a data acquisition system 4, a lead 5, a servo motor 6, a transmission shaft 7, a protection cover 8, an eccentric wheel 9, a push rod 10, a return spring 11, a fixed bearing 12, a spoiler 13 and a roller.
Detailed Description
For a clearer understanding of the objects and technical aspects of the present invention, the following detailed description is made with reference to the accompanying drawings.
Fig. 1 and 2 show a schematic structural view of a spoiler system for reducing rolling motions of a ship. In the figure, the spoiler system for reducing the rolling motion of the ship comprises a spoiler 12, a protective cover 7, a servo motor 5, a driving mechanism and a control system. The protective cover 7 adopts a groove structure for mounting the driving mechanism and the spoiler 12. The driving mechanism comprises an eccentric wheel 8, a push rod 9 and a return spring 10, wherein the push rod 9 is sleeved with the return spring 10 and then passes through a fixed bearing 11 to be connected with a spoiler 12, the servo motor 5 is connected with the eccentric wheel 8 through a driving shaft 6, and the eccentric wheel 8 rotates to push the push rod 9 to reciprocate under the action of the return spring 10 through a roller 13. The control system comprises a motion measurement sensor 1, a control platform 2 and a data acquisition system 3 which are electrically connected with each other, wherein the control platform 2 is electrically connected with a servo motor 5 through a wire 4. The motion measuring sensor 1 comprises a velocimeter for measuring the navigational speed of the ship and a gyroscope for measuring the roll angular displacement, the control platform 2 processes the angular displacement data measured by the gyroscope according to the relation between the set extending length of the spoiler 12 and the angular displacement of the ship body to obtain the real-time extending length of the spoiler, and then the servo motor 5 is controlled to move the spoiler 12 to meet the set extending length of the angular displacement of the ship body through the driving mechanism (as shown in fig. 3).
The spoilers 12 are symmetrically mounted at the edges of the ship's tail seal plate (as shown in fig. 4). The shape of the spoiler 12 and the protective cover 7 is consistent with the shape of the bottom of the tail seal plate.
By adopting the technical scheme, the motion measurement sensor comprises a gyroscope: the device is used for measuring the real-time angular displacement of the ship, and comprises a roll angle, a roll angular speed and a roll angular acceleration; a velometer: and measuring the navigational speed of the ship in real time.
The data acquisition system 3 is connected with the sensor through a wire and is used for acquiring and storing the motion state of the ship in real time.
The control platform 2 processes the data of the sensor. According to the existing control strategy, real-time roll angle values, roll angle speed values and roll angle acceleration values of the ship are respectively amplified in proportion, proportional coefficients corresponding to the motion amounts are automatically switched under different navigational speeds, a control algorithm is introduced to obtain the stretching length of a theoretical spoiler, the stretching length is converted into a voltage value, and a servo motor is driven, so that better drag reduction and roll reduction effects are brought to the optimal control mode under different navigational speeds.
The driving device of the transmission part is a servo motor and is connected with the eccentric wheel through a transmission shaft. The fixed bearing is fixed on the protective cover. The protective cover is fixed on the tail sealing plate of the ship, a vertical groove is formed in the protective cover, and the spoiler is arranged in the vertical groove of the protective cover. The lower end of the push rod passes through the fixed bearing and is connected with the spoiler. The roller is connected with the eccentric wheel and is arranged at the upper end of the push rod. And a reset spring is arranged between the upper end of the push rod and the fixed bearing, and the whole transmission system device is divided into two sets and symmetrically installed about the middle longitudinal section.
According to previous research results, the detention of the spoiler affects the fluid velocity in its vicinity, and also changes the pressure distribution in front, creating lift and improving wave making resistance. As shown in fig. 5 and 6, when the ship rolls to one side, the spoilers on the corresponding side extend a certain length and the spoilers on the other side do not extend, so that an upward lift force is generated, and a restoring moment is generated to counteract the roll motion response.
When the whole set of device starts to work: the servo motor drives the eccentric wheel to rotate, and the roller fixed on the push rod is connected with the eccentric wheel and drives the push rod to vertically move, so as to drive the spoiler to vertically move in the protective cover; the spoiler is arranged in the vertical groove of the protective cover; the size of the protective cover cannot exceed the range of the tail sealing plate; the extending length of the spoiler is at most 2 per mill L (L is the ship length), and if the extending length is longer, the spoiler has better drag reduction and rolling reduction effects, and the extending length of the spoiler can be properly increased.
Claims (3)
1. A spoiler system for reducing rolling movements of a vessel, comprising a spoiler (12) and a protective cover (7), characterized in that: the device also comprises a servo motor (5), a driving mechanism and a control system, wherein the protective cover (7) adopts a groove structure for installing the driving mechanism and the spoiler (12), the driving mechanism comprises an eccentric wheel (8), a push rod (9) and a return spring (10), the push rod (9) is sleeved with the return spring (10) and then passes through a fixed bearing (11) to be connected with the spoiler (12), the servo motor (5) is connected with the eccentric wheel (8) through a driving shaft (6), and the eccentric wheel (8) rotates to push the push rod (9) to reciprocate under the action of the return spring (10) through a roller (13); the control system comprises a motion measurement sensor (1), a control platform (2) and a data acquisition system (3) which are electrically connected with each other, wherein the control platform (2) is electrically connected with a servo motor (5) through a lead (4), the motion measurement sensor (1) comprises a speedometer for measuring the navigational speed of a ship and a gyroscope for rolling angular displacement, the control platform (2) sets a relation between the extending length and the angular displacement of the ship body according to a spoiler (12), angular displacement data measured by the gyroscope are processed to obtain the extending length of the spoiler in real time, and then the servo motor (5) is controlled to move the spoiler (12) to the set extending length which meets the angular displacement of the ship body through a driving mechanism.
2. A spoiler system for reducing rolling motion of a vessel according to claim 1, wherein: two spoilers (12) are symmetrically arranged at the edge of the ship tail sealing plate.
3. A spoiler system for reducing rolling motion of a vessel according to claim 1, wherein: the shape of the spoiler (12) and the shape of the protective cover (7) are consistent with the shape of the bottom of the tail sealing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710926134.XA CN107600354B (en) | 2017-10-06 | 2017-10-06 | Turbulent flow system for reducing ship rolling motion |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710926134.XA CN107600354B (en) | 2017-10-06 | 2017-10-06 | Turbulent flow system for reducing ship rolling motion |
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| CN107600354A CN107600354A (en) | 2018-01-19 |
| CN107600354B true CN107600354B (en) | 2023-09-19 |
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| CN108995761B (en) * | 2018-07-17 | 2020-02-07 | 浙江海洋大学 | Ship body capable of reducing river resistance |
| CN112238929A (en) * | 2018-08-15 | 2021-01-19 | 东莞市奇趣机器人科技有限公司 | Hydraulic weakening friction reducing device for underwater robot |
| CN109050783B (en) * | 2018-08-31 | 2020-02-14 | 中国运载火箭技术研究院 | Flow disturbing device and flow disturbing sheet for autonomous disturbance triggering turbulence flow transition |
| CN110143254B (en) * | 2019-05-15 | 2021-09-21 | 南京理工大学 | Supercavitation generation device |
| CN110194249A (en) * | 2019-06-06 | 2019-09-03 | 厦门大学嘉庚学院 | Carrying speedboat hull autobalance systems stabilisation |
| CN110282071B (en) * | 2019-07-23 | 2020-04-28 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Multifunctional turbulence device suitable for medium-high speed ship |
| CN113428312B (en) * | 2021-06-28 | 2022-09-20 | 中舟海洋科技(上海)有限公司 | Ship intercepting actuating mechanism and intercepting plate thereof |
| CN114228933B (en) * | 2022-02-16 | 2023-02-21 | 英辉南方造船（广州番禺）有限公司 | Interception plate mechanism and use method thereof |
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| US4915048A (en) * | 1987-04-28 | 1990-04-10 | Corwin R. Horton | Vessel with improved hydrodynamic performance |
| JPH05286484A (en) * | 1992-04-06 | 1993-11-02 | Yanmaa Zosen Kk | Swing suppressing device for vessel |
| JPH07228292A (en) * | 1994-02-15 | 1995-08-29 | Mitsubishi Heavy Ind Ltd | Hull pitching preventing device |
| CN1310680A (en) * | 1998-05-29 | 2001-08-29 | 朗尼·H·奥德加德 | High speed hybrid marine vessel |
| KR20040027759A (en) * | 2004-03-03 | 2004-04-01 | 김영복 | Apparatus for controlling and pitching of a small ship |
| KR20160000507U (en) * | 2014-08-04 | 2016-02-15 | 현대중공업 주식회사 | Catamaran |
| CN207737473U (en) * | 2017-10-06 | 2018-08-17 | 大连理工大学 | A kind of flow-disturbing system reducing ship rolling motion |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6823812B2 (en) * | 2001-05-25 | 2004-11-30 | Von Wolske James P. | Trim tabs and surface drive propeller bite control |
| US20090188416A1 (en) * | 2007-03-09 | 2009-07-30 | Hickok William L | Fin stabilizer to reduce roll for boats in turns method and apparatus |
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Patent Citations (9)
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|---|---|---|---|---|
| JPS58224880A (en) * | 1982-06-23 | 1983-12-27 | Kawasaki Heavy Ind Ltd | Hull resistance reducing device |
| NO885767D0 (en) * | 1987-04-28 | 1988-12-27 | Horton Corwin R | VESSEL WITH IMPROVED HYDRODYNAMIC PROPERTIES. |
| US4915048A (en) * | 1987-04-28 | 1990-04-10 | Corwin R. Horton | Vessel with improved hydrodynamic performance |
| JPH05286484A (en) * | 1992-04-06 | 1993-11-02 | Yanmaa Zosen Kk | Swing suppressing device for vessel |
| JPH07228292A (en) * | 1994-02-15 | 1995-08-29 | Mitsubishi Heavy Ind Ltd | Hull pitching preventing device |
| CN1310680A (en) * | 1998-05-29 | 2001-08-29 | 朗尼·H·奥德加德 | High speed hybrid marine vessel |
| KR20040027759A (en) * | 2004-03-03 | 2004-04-01 | 김영복 | Apparatus for controlling and pitching of a small ship |
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