CN112158307A - Novel intelligent resistance-reducing bilge keel - Google Patents
Novel intelligent resistance-reducing bilge keel Download PDFInfo
- Publication number
- CN112158307A CN112158307A CN202010962094.6A CN202010962094A CN112158307A CN 112158307 A CN112158307 A CN 112158307A CN 202010962094 A CN202010962094 A CN 202010962094A CN 112158307 A CN112158307 A CN 112158307A
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- Prior art keywords
- bilge
- intelligent
- keels
- control module
- bilge keels
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- 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
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- 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
- B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
- B63B1/40—Other means for varying the inherent hydrodynamic characteristics of hulls by diminishing wave resistance
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- 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
- B63B2039/067—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 effecting motion dampening by means of fixed or movable resistance bodies, e.g. by bilge keels
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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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Toys (AREA)
Abstract
The invention relates to a novel intelligent resistance-reducing bilge keel, which comprises a conventional bilge keel part, a discrete bilge keel part and an intelligent control module, wherein the conventional bilge keel part is connected with the intelligent control module; the discrete bilge keel part is arranged at a part with a flow line difference under each working condition of the bilge part and comprises a plurality of leaf-shaped rotatable bilge keels, and the leaf-shaped rotatable bilge keels are connected with the intelligent control module. Compared with the prior art, the intelligent angle-adjusting device removes the parts, which are inconsistent with the flow line and caused by various working conditions such as various speeds, various draughts and the like, in the conventional bilge keels, and replaces the parts with the flow line by a plurality of discrete blade-shaped bilge keel structures capable of intelligently adjusting the angle, and the discrete blade-shaped bilge keel structures intelligently adjust the angle along the flow line when sailing, so that the resistance is reduced, and the intelligent angle-adjusting device has important use value for ships which the parallel middle body is short and the sailing working conditions are complicated and changeable.
Description
Technical Field
The invention relates to a bilge keel, in particular to a novel intelligent resistance-reducing bilge keel.
Background
The bilge keels are an attached structure arranged at the bilge part of the ship body and used for providing damping when the ship rolls so as to reduce the rolling degree. The design of the conventional fixed bilge keels needs to be arranged along the surface flow line of the ship body under a certain sailing working condition. Some types of ships have short parallel middle bodies (such as maritime work auxiliary ships), complex navigation and working conditions and various navigation speed and draft working conditions. The bilge keels arranged according to a certain working condition are often inconsistent with the surface flow line of the ship body under other working conditions, so that the resistance is increased.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a novel intelligent bilge keel.
The purpose of the invention can be realized by the following technical scheme:
a novel intelligent resistance-reducing bilge keel comprises a conventional bilge keel part, a discrete bilge keel part and an intelligent control module; the discrete bilge keel part is arranged at a part with a flow line difference under each working condition of the bilge part and comprises a plurality of leaf-shaped rotatable bilge keels, and the leaf-shaped rotatable bilge keels are connected with the intelligent control module.
Preferably, the conventional bilge keel part is arranged in the parallel middle body part or a part with no difference in flow line under each working condition of the bilge.
Preferably, the blade-shaped rotatable bilge keel comprises blades and a rotating assembly arranged in the blades, a sensor group is arranged on the rotating assembly, and the rotating assembly and the sensor group are both connected with the intelligent control module.
Preferably, the intelligent control module prestores streamline data of the ship under various working conditions and a program for judging the streamline direction according to the real-time torque data, and the intelligent control module controls the angle of each blade according to the data provided by the sensor group to achieve the condition of minimum resistance.
Preferably, the blade-shaped rotatable bilge keels are provided with a gravity balance device.
Preferably, the rotating assembly comprises a shaft, a bearing and a corner actuator.
Preferably, one end of the shaft is fixed on the hull shell, and reinforcing ribs are arranged inside the shell plate.
Preferably, the shaft is of a hollow structure, and the cable connected with the intelligent control module passes through the inside of the shaft and penetrates through the hull.
Preferably, the blades are of a hollow streamline steel structure, and the shaft is eccentrically arranged relative to the blades, so that the torque sensor in the sensor group can sense the torque caused by water flow.
Preferably, the sensor group includes a torque sensor and a rotation angle sensor.
Compared with the prior art, the invention has the following advantages:
1. the bilge keels arranged according to a certain working condition are often inconsistent with the flow line of the surface of a ship body under other working conditions, so that the resistance is increased, the parts, which are inconsistent with the flow line due to the situation, in the conventional bilge keels are removed, the parts are replaced by a plurality of discrete bilge keel structures capable of intelligently adjusting angles, the angles of the discrete bilge keel structures are intelligently adjusted along the flow line when the ship sails, so that the resistance is reduced, and the bilge keel structure has important use value for ships which the parallel middle body is short (such as marine auxiliary ships) and the sailing working conditions are complicated and changeable.
2. The invention can keep the proper anti-rolling effect of the bilge keels in the full navigational speed range.
3. The gravity balance device is arranged in the blade, so that torque errors of the blade due to gravity imbalance can be avoided.
Drawings
FIG. 1 is a schematic layout of the apparatus of the present invention;
FIG. 2 is a structural view of a blade-shaped rotatable bilge keel in the device of the invention;
the figure is marked with: 1. the device comprises a blade-shaped rotatable bilge keel, a conventional bilge keel part, an intelligent control module, a cable, a blade, a gravity balance device, a rotating angle executing mechanism, a shaft, a sensor group and a bearing, wherein the blade-shaped rotatable bilge keel is 2, the conventional bilge keel part is 3, and the gravity balance device is 7.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Examples
As shown in fig. 1, the present application provides a novel intelligent resistance-reducing bilge keel, which reforms a part of a conventional fixed bilge keel into a plurality of discrete bilge keels capable of intelligently adjusting angles, and can reduce the resistance increase caused by inconsistent moving direction and flow line of the bilge keels under various complex navigation conditions. The novel intelligent resistance-reducing bilge keel comprises a conventional bilge keel part 2, a discrete bilge keel part and an intelligent control module 3. The conventional bilge keel part 2 has no difference from the conventional bilge keel design, but is only arranged on the parallel midbody part, or is a part which is proved by CFD calculation or model experiment to have no difference in flow line under various working conditions of the bilge. The discrete bilge keel part is arranged at a part with different flow lines under various working conditions of bilge parts, which is proved by CFD calculation or model experiments, and comprises a plurality of leaf-shaped rotatable bilge keels 1, and the leaf-shaped rotatable bilge keels 1 are connected with the intelligent control module 3. The intelligent control module 3 can automatically adjust the angle of the blades 5 according to data provided by components such as a torque sensor in the blade-shaped rotatable bilge keels 1 and data obtained by CFD or model experiments, so that the angle is consistent with the direction of the streamline.
As shown in fig. 2, the blade-shaped rotatable bilge keels 1 comprise blades 5, a rotating assembly arranged in the blades 5 and a gravity balance device 6, wherein a sensor group 9 is arranged on the rotating assembly, and the rotating assembly and the sensor group 9 are both connected with the intelligent control module 3. The rotating assembly comprises a shaft 8, a bearing 10 and a corner executing mechanism 7, and the corner executing mechanism 7 can adjust the angle of the blade 5 according to the instruction of the intelligent control module 3. One end of the shaft 8 is fixed on the hull shell, and reinforcing ribs are arranged inside the shell plate. The shaft 8 is of a hollow structure, and the cable 4 connected with the intelligent control module 3 passes through the inside of the shaft 8 and penetrates through the hull. The blades 5 are of a hollow streamline steel structure, and the shaft 8 is eccentrically arranged relative to the blades 5, so that the torque sensors in the sensor group 9 can sense torque caused by water flow. The gravity balancing device 6 ensures that the blade 5 does not experience torque errors due to gravity imbalance.
The sensor group 9 comprises a torque sensor, a rotation angle sensor and other fault diagnosis, environmental perception and other additional functional sensors.
The intelligent control module 3 prestores streamline data obtained by CFD or model experiments under various working conditions (draught and navigational speed) of the ship and a program for judging the streamline direction according to real-time torque data, and can control the angle of the blade 5 according to information provided by components such as a torque sensor and the like and the prestored data so as to achieve the condition of minimum resistance.
Claims (10)
1. A novel intelligent resistance-reducing bilge keel is characterized by comprising a conventional bilge keel part (2), a discrete bilge keel part and an intelligent control module (3); the discrete bilge keel part is arranged at a part with a flow line difference under each working condition of the bilge part and comprises a plurality of leaf-shaped rotatable bilge keels (1), and the leaf-shaped rotatable bilge keels (1) are connected with the intelligent control module (3).
2. The new intelligent bilge keels of claim 1, wherein said conventional bilge keels (2) are arranged in parallel midbody parts or parts with no difference in flow line under each working condition of bilge.
3. The novel intelligent bilge keels of claim 1, wherein the blade-shaped rotatable bilge keels (1) comprise blades (5) and rotating assemblies arranged in the blades (5), the rotating assemblies are provided with sensor groups (9), and the rotating assemblies and the sensor groups (9) are connected with the intelligent control module (3).
4. The novel intelligent bilge keels of claim 3, wherein streamline data under various working conditions of a ship and a program for judging the streamline direction according to real-time torque data are prestored in the intelligent control module (3), and the intelligent control module (3) controls the angle of each blade (5) according to data provided by the sensor group (9) to achieve the condition of minimum resistance.
5. The new intelligent bilge keels of claim 3, characterized in that said leaf-shaped rotatable bilge keels (1) are provided with gravity balancing means (6).
6. The new intelligent bilge keels of claim 3, wherein said rotating assembly comprises a shaft (8), bearings (10) and a corner actuator (7).
7. The new intelligent bilge keels of claim 6, wherein one end of said shaft (8) is fixed on the hull shell and the reinforcing ribs are arranged inside the shell plate.
8. The new intelligent bilge keels of claim 7, wherein said shaft (8) is hollow, and the cables (4) connected to the intelligent control module (3) pass through the inside of the shaft (8) and through the hull.
9. The novel intelligent bilge keels of claim 6, wherein the blades (5) are of a hollow streamline steel structure, and the shaft (8) is eccentrically arranged relative to the blades (5), so that the torque sensors in the sensor group (9) can sense the torque caused by water flow.
10. The new intelligent bilge keels of claim 3, wherein said sensor group (9) comprises a torque sensor and a rotation angle sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010962094.6A CN112158307A (en) | 2020-09-14 | 2020-09-14 | Novel intelligent resistance-reducing bilge keel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010962094.6A CN112158307A (en) | 2020-09-14 | 2020-09-14 | Novel intelligent resistance-reducing bilge keel |
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| Publication Number | Publication Date |
|---|---|
| CN112158307A true CN112158307A (en) | 2021-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010962094.6A Pending CN112158307A (en) | 2020-09-14 | 2020-09-14 | Novel intelligent resistance-reducing bilge keel |
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| CN (1) | CN112158307A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112158308A (en) * | 2020-09-27 | 2021-01-01 | 上海交通大学 | Novel low resistance bilge keel structure of marine auxiliary ship |
| CN113022807A (en) * | 2021-04-27 | 2021-06-25 | 广船国际有限公司 | Bilge keel structure of ship |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61119490A (en) * | 1984-11-15 | 1986-06-06 | Mitsubishi Heavy Ind Ltd | Hull-rolling reducing apparatus |
| CN101481010A (en) * | 2008-01-09 | 2009-07-15 | 林友根 | Device for reducing ship swaying as well as producing thrust |
| KR20130134034A (en) * | 2012-05-30 | 2013-12-10 | 인하대학교 산학협력단 | The fixed type fin stabilizer utilizing the coanda effect |
| CN107640301A (en) * | 2017-09-06 | 2018-01-30 | 哈尔滨工程大学 | One kind, which subtracts, shakes the drag reduction tandem wing and equipped with tandem-winged ship |
-
2020
- 2020-09-14 CN CN202010962094.6A patent/CN112158307A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61119490A (en) * | 1984-11-15 | 1986-06-06 | Mitsubishi Heavy Ind Ltd | Hull-rolling reducing apparatus |
| CN101481010A (en) * | 2008-01-09 | 2009-07-15 | 林友根 | Device for reducing ship swaying as well as producing thrust |
| KR20130134034A (en) * | 2012-05-30 | 2013-12-10 | 인하대학교 산학협력단 | The fixed type fin stabilizer utilizing the coanda effect |
| CN107640301A (en) * | 2017-09-06 | 2018-01-30 | 哈尔滨工程大学 | One kind, which subtracts, shakes the drag reduction tandem wing and equipped with tandem-winged ship |
Non-Patent Citations (3)
| Title |
|---|
| 丁勇等: "鳍与舭龙骨的水动力干扰", 《中国造船》 * |
| 夏征农: "《辞海工程技术分册》", 31 December 1987 * |
| 许辉等: "减摇鳍与舭龙骨不同组合方式对船舶快速性影响研究", 《武汉理工大学学报（交通科学与工程版）》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112158308A (en) * | 2020-09-27 | 2021-01-01 | 上海交通大学 | Novel low resistance bilge keel structure of marine auxiliary ship |
| CN113022807A (en) * | 2021-04-27 | 2021-06-25 | 广船国际有限公司 | Bilge keel structure of ship |
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Application publication date: 20210101 |