CN110641669A - Hydrodynamic energy-saving combined guide pipe hydrofoil for ship - Google Patents
Hydrodynamic energy-saving combined guide pipe hydrofoil for ship Download PDFInfo
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- CN110641669A CN110641669A CN201910984481.7A CN201910984481A CN110641669A CN 110641669 A CN110641669 A CN 110641669A CN 201910984481 A CN201910984481 A CN 201910984481A CN 110641669 A CN110641669 A CN 110641669A
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- guide pipe
- hydrofoil
- conduit
- hydrofoils
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/14—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in non-rotating ducts or rings, e.g. adjustable for steering purpose
- B63H5/15—Nozzles, e.g. Kort-type
Abstract
The invention discloses a hydrodynamic energy-saving combined type guide pipe hydrofoil for a ship, and belongs to the technical field of hydrodynamic energy saving of ships. The method comprises the following steps: the guide pipe consists of a non-full-circle annular guide pipe and a non-full-circle elliptical guide pipe, the non-full-circle elliptical guide pipe is connected with the ship body through a plurality of hydrofoils, one end of the non-full-circle annular guide pipe is connected with the ship body, the other end of the non-full-circle annular guide pipe is connected with one end of the non-full-circle elliptical guide pipe, and two ends of the non-full-circle annular guide pipe are respectively connected with the ship body; the hydrofoils are radially and outwards distributed on the inner side and the outer side of the incomplete elliptical ring conduit by taking the axis of the propeller as the center, wherein the hydrofoils comprise outer hydrofoils of the conduit and inner hydrofoils of the conduit, one ends of the outer hydrofoils of the conduit are fixedly arranged on the outer side of the incomplete elliptical ring conduit, and two ends of the inner hydrofoils of the conduit are respectively connected with the inner side of the incomplete elliptical ring conduit and the ship body. The hydrodynamic force energy-saving combined type guide pipe hydrofoil for the ship is used for improving the ship propulsion efficiency and reducing the propulsion power of a main engine.
Description
Technical Field
The invention relates to the technical field of hydrodynamic energy conservation of ships, in particular to a hydrodynamic energy-saving combined guide pipe hydrofoil for ships, and particularly relates to a hydrodynamic energy-saving device for ships, which is suitable for flow in front of a paddle and can provide prerotation of a propeller and improve unfavorable flow at the tail of the ship.
Background
With the increasing global warming effect, IMO (International Maritime Organization) puts higher requirements on Energy saving and emission reduction in ship navigation, mainly embodying quantitative limitations in two aspects, namely EEDI (Energy Efficiency design index) index as the emission reduction requirement in ship design and EEOI (ship Energy Efficiency operation index) index as the emission reduction requirement in ship navigation. Wherein the former requires a 30% reduction in the EEDI (design for energy efficiency index) index of a new ship by 2025. In such a short time, to achieve the emission reduction target, the research on ship design and hydrodynamic performance is a very serious challenge. Therefore, various measures are actively taken by the shipbuilding community, wherein the ship hydrodynamic energy-saving technology is an important and effective emission reduction measure.
Hydrodynamic energy saving technology is not a completely new technology, and a large number of such technologies have been developed and successfully applied to real ships in the world over the last forty years. However, with the development of the ship profile technology, the new ship profile gradually weakens the function of the existing ship hydrodynamic energy-saving technology, and the hydrodynamic technology suitable for the new ship profile needs to be developed. Meanwhile, due to the development of computational fluid dynamics technology, details of flow information around the ship are generally and easily obtained, and under the current conditions, on one hand, the energy-saving technical principle is further clear, and on the other hand, the flow details can indicate the detailed optimization of the hydrodynamic energy-saving device. Therefore, a novel hydrodynamic energy-saving device which is more suitable for the flow field at the tail of the ship and can provide more sufficient prerotation for the propeller is provided, and the problem to be solved urgently is solved.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a hydrodynamic energy-saving combined type guide pipe hydrofoil for ships, which can homogenize the flow of fluid entering a small radius range of a propeller, particularly the fluid close to a propeller hub, and can maximize the lift force of the guide pipe by changing and selecting the wing profile, angle, chord length and position of the hydrofoil; the hydrofoil changes the flow direction entering the large radius range of the propeller to form tangential flow opposite to the rotation direction of the propeller, so that the propulsion efficiency of the propeller is improved, and finally the purpose of reducing the required main engine power at the same navigational speed is achieved.
The specific technical scheme is as follows:
a hydrodynamic energy-saving combined duct hydrofoil for ships, comprising: the ship comprises a guide pipe and a plurality of hydrofoils, wherein the guide pipe consists of a non-complete circular ring guide pipe and a non-complete elliptical ring guide pipe, the non-complete elliptical ring guide pipe is connected with a ship body through the hydrofoils, one end of the non-complete circular ring guide pipe is connected with the ship body, the other end of the non-complete circular ring guide pipe is connected with one end of the non-complete elliptical ring guide pipe, and the non-complete circular ring guide pipe is of a fan-shaped structure.
The incomplete elliptical ring guide pipe and the incomplete circular ring guide pipe are independently arranged, the incomplete elliptical ring guide pipe is connected with the ship body through a plurality of hydrofoils, and two ends of the incomplete circular ring guide pipe are respectively connected with the ship body.
The hydrofoils are radially and outwards distributed on the inner side and the outer side of the incomplete elliptical ring conduit by taking the axis of the propeller as the center, wherein the hydrofoils comprise outer hydrofoils of the conduit and inner hydrofoils of the conduit, one ends of the outer hydrofoils of the conduit are fixedly arranged on the outer side of the incomplete elliptical ring conduit, and two ends of the inner hydrofoils of the conduit are respectively connected with the inner side of the incomplete elliptical ring conduit and the ship body.
In the hydrodynamic energy-saving combined conduit hydrofoil for the ship, the number of the hydrofoils outside the conduit is more than that of the hydrofoils inside the conduit; or the number of the hydrofoils in the conduit is more than that of the hydrofoils outside the conduit; or the number of hydrofoils outside the conduit is equal to the number of hydrofoils inside the conduit.
In the hydrodynamic energy-saving combined type guide pipe hydrofoil for the ship, the hydrofoil is characterized in that the number of the hydrofoils in the guide pipe and the number of the hydrofoils outside the guide pipe are respectively 2-5.
In the hydrodynamic energy-saving combined conduit hydrofoil for the ship, the characteristic is also that the chord length of the longitudinal section of the conduit is changed along the circumferential direction; or the chord length of the longitudinal section of the duct, remains constant in the circumferential direction.
The hydrodynamic force energy-saving combined type guide pipe hydrofoil for the ship is characterized in that the included angle between the length direction of the outer circumferential surface of the guide pipe and the advancing direction of the ship is-5-15 degrees, and the included angle changes along the circumferential direction of the guide pipe or keeps unchanged along the circumferential direction of the guide pipe.
The hydrodynamic energy-saving combined type guide pipe hydrofoil for the ship is characterized in that the non-complete circular guide pipe and the non-complete elliptical guide pipe are arranged in a staggered mode from front to back according to specific flow field information of propeller accessories; the non-full circle ring conduit and the non-full ellipse ring conduit are flush at the front and back positions.
The hydrodynamic energy-saving combined type guide pipe hydrofoil for the ship is characterized in that the length direction of the outer circumferential surface of the non-complete circular guide pipe and the length direction of the outer circumferential surface of the non-complete elliptical guide pipe are respectively arranged in a staggered mode or aligned with an included angle formed by the advancing direction of the ship according to specific flow field information of propeller accessories.
In the hydrodynamic energy-saving combined conduit hydrofoil for the ship, the farthest distance between one end of the conduit outer hydrofoil, which is far away from the non-complete elliptical ring conduit, and the axis of the propeller is equal to the radius of the propeller.
The hydrodynamic energy-saving combined type guide pipe hydrofoil for the ship is further characterized in that the span length ratio of the hydrofoil in the guide pipe to the hydrofoil outside the guide pipe is 3: 7-1: 0.
The hydrodynamic energy-saving combined guide pipe hydrofoil for the ship is also characterized in that the included angle between the width direction of the hydrofoil and the forward direction of the ship is-5-15 degrees.
The hydrodynamic energy-saving combined conduit hydrofoil for the ship is also characterized in that the section chord length, the section shape and the angle of the hydrofoil can be changed along the extending direction of the hydrofoil.
The hydrodynamic energy-saving combined type guide pipe hydrofoil for the ship is characterized in that a port structure and a starboard structure of the combined type guide pipe hydrofoil are determined according to the steering of a propeller of the ship, the steering of the propeller of the ship is right-handed, a non-complete elliptical ring guide pipe and a plurality of hydrofoils are arranged on the port of the combined type guide pipe hydrofoil, and a non-complete circular ring guide pipe is arranged on the starboard of the combined type guide pipe hydrofoil; the propeller of the ship turns to left-handed, the starboard of the combined type guide pipe hydrofoil is provided with an incomplete elliptical ring guide pipe and a plurality of hydrofoils, and the port of the combined type guide pipe hydrofoil is provided with an incomplete circular ring guide pipe.
The positive effects of the technical scheme are as follows:
the invention provides a hydrodynamic force energy-saving combined type guide pipe hydrofoil for a ship, 1, a guide pipe is formed by combining a non-complete circular guide pipe and a non-complete elliptical guide pipe, and can be more suitable for a tail flow field of a ship body, so that the flow of fluid entering a small radius range of a propeller, particularly the fluid close to a propeller hub of the propeller, is homogenized, the propelling efficiency of the propeller is improved, and the purpose of reducing the required main engine power at the same navigational speed is finally achieved; 2. the guide pipe can generate thrust through the change and selection of the wing profile, the angle, the chord length and the position; 3. the hydrofoils are distributed in a radial shape, the flow direction entering the disc surface of the propeller can be changed, and tangential flow opposite to the rotation direction of the propeller is formed, so that the propelling efficiency of the propeller is improved, and the purpose of reducing the power of a main engine required at the same navigational speed is finally achieved.
Drawings
FIG. 1 is a front view of an embodiment of a marine hydrodynamic energy saving compound conduit hydrofoil of the present invention;
FIG. 2 is a perspective view of an embodiment of a marine hydrodynamic energy saving combined duct hydrofoil of the present invention;
FIG. 3 is a right side view of an embodiment of a marine hydrodynamic energy saving compound duct hydrofoil of the present invention;
FIG. 4 is a left side view of an embodiment of a marine hydrodynamic energy saving compound duct hydrofoil of the present invention;
FIG. 5 is a top view of an embodiment of a marine hydrodynamic energy saving compound conduit hydrofoil of the present invention;
FIG. 6 is a schematic view of the installation position of an embodiment of the hydrodynamic energy-saving combined conduit hydrofoil for the ship;
FIG. 7 is a front view of an embodiment of a hydrodynamic energy saving compound duct hydrofoil for a ship of the present invention;
FIG. 8 is a side view of an embodiment of a hydrodynamic energy saving compound duct hydrofoil for a ship of the present invention;
FIG. 9 is a top view of an embodiment of a marine hydrodynamic energy saving compound conduit hydrofoil of the present invention;
FIG. 10 is a cross-sectional view of an embodiment of a hydrodynamic energy saving compound duct hydrofoil for a ship of the present invention;
fig. 11 is a cross-sectional view of an embodiment of a hydrodynamic energy saving composite conduit hydrofoil for a ship of the present invention.
In the drawings: 1. a conduit; 11. a non-full circle annular duct; 12. a non-complete elliptical ring catheter; 2. a hydrofoil; 21. an outer hydrofoil of the conduit; 22. a hydrofoil in the conduit; 3. a ship body.
Detailed Description
In order to make the technical means, the creation features, the achievement objects and the effects of the invention easy to understand, the following embodiments specifically describe a hydrodynamic energy-saving combined type conduit hydrofoil for a ship provided by the invention with reference to fig. 1 to 11.
In this embodiment, the hydrodynamic energy-saving combined conduit hydrofoil for the ship mainly comprises a conduit 1, a non-complete circular ring conduit 11, a non-complete elliptical ring conduit 12, a hydrofoil 2, an outer conduit hydrofoil 21, an inner conduit hydrofoil 22 and a hull 3.
This combination formula pipe hydrofoil sets up in screw place ahead and is close to the boats and ships afterbody of screw, combination formula pipe hydrofoil includes pipe 1 and a plurality of hydrofoil 2, wherein pipe 1 comprises incomplete ring of ellipse pipe 11 and incomplete elliptical ring pipe 12, and incomplete elliptical ring pipe 12 is connected with hull 3 through a plurality of hydrofoils 2, the left end and the 2 fixed connection of hydrofoil or the free setting of incomplete elliptical ring pipe 12, the inboard and the 2 fixed connection of hydrofoils of left end are kept away from to incomplete elliptical ring pipe 12, the one end and the 3 connections of hull of incomplete ring pipe 11, the other end of incomplete ring of ellipse pipe 11 is connected with the one end of incomplete elliptical ring pipe 12, and incomplete ring of ellipse pipe is fan-shaped structure. The cross section of the catheter 1 is shown in fig. 10, where the side a is the inside of the catheter 1, the side B is the outside of the catheter 1, the outside of the longitudinal section of the catheter 1 is arranged in an inclined straight line, and the inside of the longitudinal section of the catheter 1 is arranged in an arc shape.
In addition, an embodiment is provided, wherein the incomplete elliptical ring guide pipe 12 and the incomplete circular ring guide pipe 11 in the guide pipe 1 are separated from each other and are arranged independently, the incomplete elliptical ring guide pipe 12 is connected with the ship body 3 through a plurality of hydrofoils 2, and two ends of the incomplete circular ring guide pipe 11 are respectively connected with the ship body 3.
The combined type guide pipe hydrofoil is of an asymmetric structure, when a ship propeller is a right-handed propeller, the incomplete elliptical ring guide pipe 12 is arranged on a port in front of the propeller, the incomplete circular ring guide pipe 11 is arranged on a starboard in front of the propeller, and the hydrofoil 2 is arranged on the port in front of the propeller; when the ship propeller is a left-handed propeller, the non-complete circular ring guide pipe 11 is arranged on a port side in front of the propeller, the non-complete elliptical ring guide pipe 12 is arranged on a starboard side in front of the propeller, and the hydrofoil 2 is arranged on the starboard side in front of the propeller.
The hydrofoils 2 are radially and outwards distributed on the inner side and the outer side of the incomplete elliptical ring conduit 12 by taking the propeller axis as the center, wherein the hydrofoils 2 comprise an outer conduit hydrofoil 21 and an inner conduit hydrofoil 22, one end of the outer conduit hydrofoil 21 is fixedly arranged on the outer side of the incomplete elliptical ring conduit 12, two ends of the inner conduit hydrofoil 22 are respectively connected with the inner side of the incomplete elliptical ring conduit 12 and the ship body 3, the cross-sectional shape of the hydrofoils 2 is shown in figure 11, the side a is a wing back, and the side b is a wing surface. The design of the ducts 1 and the hydrofoils 2 is mainly to homogenize the flow of the fluid entering the small radius range of the propeller, in particular close to the hub of the propeller, in order to increase the propulsion efficiency of the propeller and finally achieve the objective of reducing the main engine power required at the same speed.
In a preferred embodiment, as shown in fig. 1 and 2, the number of the outer hydrofoils 21 of the conduit is more than the number of the inner hydrofoils 22 of the conduit; or the number of hydrofoils 22 inside the duct is greater than the number of hydrofoils 21 outside the duct; or the number of outer hydrofoils 21 and the number of inner hydrofoils 22 are equal. The number of outer hydrofoils 21 of the duct is preferably greater than the number of inner hydrofoils 22 of the duct, chosen according to the vessel itself and the flow field environment in which it is located.
In a preferred embodiment, as shown in fig. 1 and 2, the number of the duct inner hydrofoils 22 and the duct outer hydrofoils 21 is 2 to 5. Further, the number of the duct inner hydrofoils 22 is 3, and the number of the duct outer hydrofoils 21 is 4.
In a preferred embodiment, as shown in fig. 3, 4, 5, the chord length of the longitudinal section of the duct 1 varies in the circumferential direction; or the chord length of the longitudinal section of the duct 1, remains constant in the circumferential direction.
In a preferred embodiment, as shown in fig. 3, 4 and 5, the angle between the length direction of the outer circumferential surface of the guide pipe 1 and the advancing direction of the ship is-5 to 15 degrees, and the angle varies along the circumferential direction of the guide pipe 1 or remains constant along the circumferential direction of the guide pipe 1.
In a preferred embodiment, as shown in fig. 1 and 2, the non-complete circular ring conduit 11 and the non-complete elliptical ring conduit 12 are arranged in a front-back staggered mode according to specific flow field information of the propeller accessories; the non-full circle ring duct 11 and the non-full circle elliptical ring duct 12 are flush in the front-rear position.
In a preferred embodiment, as shown in fig. 1 and fig. 2, the length direction of the outer circumferential surface of the non-complete circular ring conduit 11 and the length direction of the outer circumferential surface of the non-complete elliptical ring conduit 12 are respectively offset or aligned with an included angle formed by the advancing direction of the ship according to specific flow field information of the propeller accessory.
In a preferred embodiment, as shown in fig. 1 and 2, the farthest distance between the end of the duct outer hydrofoil 21 facing away from the non-complete elliptical ring duct 12 and the axis of the propeller is equal to the radius of the propeller, so that the range of the combined duct hydrofoil completely covers the area of the propeller.
In a preferred embodiment, as shown in fig. 1, 2, 9 and 11, the ratio of the span length of the inner hydrofoil 22 of the duct to the span length of the outer hydrofoil 21 of the duct is 3:7 to 1:0, and the ratio of the span length of the outer hydrofoil 21 of the duct to the span length of the inner hydrofoil 22 of the duct is 0.05 to 0.15.
In a preferred embodiment, as shown in fig. 1, 2 and 6, the angle between the width direction of the hydrofoil 2 and the forward direction of the ship is-5 ° to 15 °, and further-2 ° to 10 °.
In a preferred embodiment, as shown in fig. 9 and 11, the hydrofoil 2 is adjusted in accordance with the actual conditions of the propeller blades and the flow field information, with the cross-sectional chord length, cross-sectional shape, and angle of the hydrofoil 2 being variable in the extending direction of the hydrofoil.
In a preferred embodiment, the port and starboard configurations of the combined duct hydrofoil are determined according to the propeller steering of the ship, the combined duct hydrofoil is configured as shown in fig. 1 and 2 for a ship mounted on a right propeller, and the port and starboard configurations shown in fig. 1 are changed for a ship mounted on a left propeller. Specifically, a propeller of the ship turns to a right-handed screw, a non-complete elliptical ring conduit and a plurality of hydrofoils are arranged on the port side of the combined conduit hydrofoil, and a non-complete circular ring conduit is arranged on the starboard side of the combined conduit hydrofoil; the propeller of the ship turns to left-handed, the starboard of the combined type guide pipe hydrofoil is provided with an incomplete elliptical ring guide pipe and a plurality of hydrofoils, and the port of the combined type guide pipe hydrofoil is provided with an incomplete circular ring guide pipe.
In the following description, a specific embodiment is described, and it should be noted that the structures, processes, and materials described in the following embodiment are only used to illustrate the feasibility of the embodiment, and are not intended to limit the scope of the present invention.
The parameters of the conduit and hydrofoil related to the invention are selected and designed as follows:
firstly, determining the axial distance between an energy-saving device (a combined guide pipe hydrofoil) and the surface of a propeller disc according to the geometric shapes and the flow characteristics of the front part and the rear part of a propeller; secondly, determining the size ratio of the guide pipe to the hydrofoil in the radial direction of the propeller, wherein the span length ratio of the hydrofoil outside the guide pipe to the hydrofoil inside the guide pipe is within the range of 0.05-0.15; thirdly, determining the circumferential arrangement angle position of the hydrofoil relative to the propeller and the pitching angle (which is equal to the installation angle, the leading edge of the hydrofoil faces downwards, and the trailing edge of the hydrofoil faces upwards to be positive) of the flowing fluid, wherein the pitching angle is-2-10 degrees; fourthly, determining the circumferential size of the guide pipe, namely the positions of two ends of the non-complete circular ring guide pipe and the non-complete elliptical ring guide pipe according to the tail flow field information of the ship body, and further determining the number of the hydrofoils in the guide pipe and the number of the hydrofoils outside the guide pipe.
The above process is usually designed according to the result of the flow numerical calculation of the target ship type, and the final energy-saving effect of the design scheme is usually verified through a water pool model test. After the design scheme passes through structural strength evaluation, the actual ship implementation is provided.
The following examples provide a practical design process of the hydrodynamic force energy-saving combined type guide pipe hydrofoil for the ship applied to a type cargo ship:
firstly, according to market research and shipowner requirements, a type I target ship is determined, and the main dimensions and technical indexes are as follows:
the total length is as follows: 330m, type width: 57m, design draft: 21.4m, water discharge: 308000t, speed of flight 13kn, propeller rotation direction: dextrorotation, propeller diameter: 9.4m, propeller design rotation speed: 65 r/min.
Then, the optimal implementation of the hydrodynamic economizer is determined as follows:
the longitudinal distance from the tail edge of the energy-saving device (the combined guide pipe hydrofoil) to the surface of the propeller disk is 1.25 m;
the spread shape (the circumferential direction of the outer circle) of the guide pipe is according to the right rotary direction of the propeller, the port adopts an incomplete elliptical ring guide pipe, the starboard adopts a combined form of an incomplete circular ring guide pipe, the guide pipe changes the chord length along the spread direction (the circumferential direction of the outer circle), wherein the chord length of the guide pipe at the longitudinal section in the ship body is longest, the chord lengths at two ends of the guide pipe are shortest, and the chord lengths are gradually shortened from the middle part to the two ends, the top view of each guide pipe is a right-angle trapezoid, and the top view is two right-angle trapezoids; the chord length of the conduit at the middle longitudinal section is the largest, so that the conduit at the middle longitudinal section is close to the ship body, the lap joint of the conduit and the ship body is convenient to strengthen, the sections at the two sides of the conduit shrink according to the flow field, and the resistance of the conduit can be reduced.
The span length ratio of the outer hydrofoil of the conduit to the inner hydrofoil of the conduit is 0.05-0.15.
The number of the hydrofoils in the guide pipe is 3, and the hydrofoils are distributed along the circumferential angle, wherein one hydrofoil is located at the position where the axis of the propeller is located at an upward 10 DEG horizontal plane, and the other hydrofoils are respectively arranged at the position where the hydrofoils in the guide pipe with the determined positions are located at an upward 35 DEG position and a downward 30 DEG position.
The number of the hydrofoils outside the guide pipe is 4, the peripheral angles of the hydrofoils are distributed as follows, one hydrofoil is located on the horizontal plane where the axis of the propeller is located, the second hydrofoil is located 20 degrees upwards on the horizontal plane where the axis of the propeller is located, the installation angles of the other two hydrofoils in the guide pipe located on the two sides are the same, and the length directions of the hydrofoils are overlapped.
The included angle between the section chord length of the hydrofoil and the advancing direction of the ship is changed along with the change of the span length.
Wherein the port part of the catheter is unfolded to an elliptical arc of 110 degrees; the starboard portion was spanwise a 155 deg. arc.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. A hydrodynamic force energy-saving combined type guide tube hydrofoil for a ship is characterized in that the combined type guide tube hydrofoil is arranged in front of a propeller and connected with a ship body, and comprises: the ship comprises a guide pipe and a plurality of hydrofoils, wherein the guide pipe consists of a non-complete circular ring guide pipe and a non-complete circular ring guide pipe, the non-complete circular ring guide pipe is connected with the ship body through the hydrofoils, one end of the non-complete circular ring guide pipe is connected with the ship body, the other end of the non-complete circular ring guide pipe is connected with one end of the non-complete circular ring guide pipe, and the non-complete circular ring guide pipe is of a fan-shaped structure;
or the incomplete elliptical ring guide pipe and the incomplete circular ring guide pipe are independently arranged, the incomplete elliptical ring guide pipe is connected with the ship body through a plurality of hydrofoils, and two ends of the incomplete circular ring guide pipe are respectively connected with the ship body;
the hydrofoils are radially and outwards distributed on the inner side and the outer side of the incomplete elliptical ring guide pipe by taking the propeller axis as the center, wherein the hydrofoils comprise outer hydrofoils of the guide pipe and inner hydrofoils of the guide pipe, one end of each outer hydrofoil of the guide pipe is fixedly arranged on the outer side of the incomplete elliptical ring guide pipe, and the two ends of each inner hydrofoil of the guide pipe are respectively connected with the inner side of the incomplete elliptical ring guide pipe and the ship body.
2. The hydrodynamic force energy saving combined conduit hydrofoil for ships according to claim 1, wherein the number of the outer conduit hydrofoils is more than the number of the inner conduit hydrofoils; or the number of the hydrofoils in the conduit is more than that of the hydrofoils outside the conduit; or the number of the hydrofoils outside the conduit is equal to that of the hydrofoils inside the conduit.
3. The hydrodynamic force energy-saving combined conduit hydrofoil for ships according to claim 1, wherein the number of the inner conduit hydrofoil and the outer conduit hydrofoil is 2-5 respectively.
4. The hydrodynamic force energy saving combined conduit hydrofoil for ships according to claim 1, wherein the chord length of the longitudinal section of the conduit varies along the circumferential direction; or the chord length of the longitudinal section of the duct remains constant in the circumferential direction.
5. The hydrodynamic force energy-saving combined type guide tube hydrofoil for ships according to claim 1, wherein an included angle between the length direction of the outer circumferential surface of the guide tube and the advancing direction of the ship is-5 to 15 degrees, and the included angle varies along the circumferential direction of the guide tube or remains constant along the circumferential direction of the guide tube.
6. The hydrodynamic force energy-saving combined conduit hydrofoil for ships according to claim 1, wherein the non-complete circular conduit and the non-complete elliptical conduit are arranged in a staggered manner from front to back; or the non-complete circular ring conduit and the non-complete elliptical ring conduit are flush in the front and back positions.
7. The hydrodynamic force energy-saving combined conduit hydrofoil for ships according to claim 6, wherein the length direction of the outer circumferential surface of the non-complete circular conduit and the length direction of the outer circumferential surface of the non-complete elliptical conduit are respectively staggered or aligned with an included angle formed by the advancing direction of a ship.
8. A hydrodynamic energy saving combined duct hydrofoil for ships according to claim 1 characterized in that the farthest distance between the end of the duct outer hydrofoil facing away from the non-complete elliptical ring duct and the axis of the propeller is equal to the radius of the propeller.
9. The hydrodynamic force energy-saving combined type guide pipe hydrofoil for the ship according to claim 1, wherein the span length ratio of the inner hydrofoil of the guide pipe to the outer hydrofoil of the guide pipe is 3: 7-1: 0, and the included angle between the width direction of the hydrofoil and the forward direction of the ship is-5-15 degrees.
10. A hydrodynamic energy-saving combined duct hydrofoil for ships according to claim 1, wherein the port structure and the starboard structure of the combined duct hydrofoil are determined according to the turning of the propeller of a ship, the turning of the propeller of the ship is right-handed, the port of the combined duct hydrofoil is provided with the incomplete elliptical ring duct and a plurality of hydrofoils, and the starboard of the combined duct hydrofoil is provided with the incomplete circular ring duct; the propeller of the ship turns to a left-handed direction, the incomplete elliptical ring guide pipe and the plurality of hydrofoils are arranged on the starboard of the combined guide pipe hydrofoils, and the incomplete circular ring guide pipe is arranged on the port of the combined guide pipe hydrofoils.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113879498A (en) * | 2021-11-10 | 2022-01-04 | 中国船舶工业集团公司第七0八研究所 | Marine spiral line type guide pipe fin |
| CN115056951A (en) * | 2022-05-23 | 2022-09-16 | 中国船舶工业集团公司第七0八研究所 | Marine hyperbolic fairing wing |
| CN115416832A (en) * | 2022-09-05 | 2022-12-02 | 大连中远海运重工有限公司 | Spiral honeycomb duct energy-saving device for ship |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101200215A (en) * | 2006-12-13 | 2008-06-18 | 万国造船株式会社 | Shipping pipe, manufacture method thereof and shipping having the same |
| KR20110083998A (en) * | 2010-01-15 | 2011-07-21 | 대우조선해양 주식회사 | Duct for ship |
| KR20120124205A (en) * | 2011-05-03 | 2012-11-13 | 에스피피조선 주식회사 | Fuel-efficiecy Improving crown duct for ship |
| CN104828226A (en) * | 2015-04-21 | 2015-08-12 | 中国船舶工业集团公司第七〇八研究所 | Auxiliary propulsion energy-saving device for ship hydrodynamics |
| CN204775955U (en) * | 2015-06-17 | 2015-11-18 | 南通海国机械有限公司 | Boats and ships are with guide pulley of prewhirling that catchments |
| CN205931199U (en) * | 2016-07-06 | 2017-02-08 | 中船重工（上海）节能技术发展有限公司 | Marine annular airflow fence |
| CN106985990A (en) * | 2017-03-15 | 2017-07-28 | 中船重工（上海）节能技术发展有限公司 | A kind of preposition flap peculiar to vessel |
| JP2018016091A (en) * | 2016-07-25 | 2018-02-01 | 三菱重工業株式会社 | Marine vessel |
| JP2018020584A (en) * | 2016-08-01 | 2018-02-08 | 三井造船株式会社 | Marine vessel |
| JP2018079832A (en) * | 2016-11-17 | 2018-05-24 | ナカシマプロペラ株式会社 | Stern duct |
| KR20190110857A (en) * | 2018-03-21 | 2019-10-01 | 삼성중공업 주식회사 | Propulsion efficiency enhancing apparatus |
-
2019
- 2019-10-16 CN CN201910984481.7A patent/CN110641669A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101200215A (en) * | 2006-12-13 | 2008-06-18 | 万国造船株式会社 | Shipping pipe, manufacture method thereof and shipping having the same |
| KR20110083998A (en) * | 2010-01-15 | 2011-07-21 | 대우조선해양 주식회사 | Duct for ship |
| KR20120124205A (en) * | 2011-05-03 | 2012-11-13 | 에스피피조선 주식회사 | Fuel-efficiecy Improving crown duct for ship |
| CN104828226A (en) * | 2015-04-21 | 2015-08-12 | 中国船舶工业集团公司第七〇八研究所 | Auxiliary propulsion energy-saving device for ship hydrodynamics |
| CN204775955U (en) * | 2015-06-17 | 2015-11-18 | 南通海国机械有限公司 | Boats and ships are with guide pulley of prewhirling that catchments |
| CN205931199U (en) * | 2016-07-06 | 2017-02-08 | 中船重工（上海）节能技术发展有限公司 | Marine annular airflow fence |
| JP2018016091A (en) * | 2016-07-25 | 2018-02-01 | 三菱重工業株式会社 | Marine vessel |
| JP2018020584A (en) * | 2016-08-01 | 2018-02-08 | 三井造船株式会社 | Marine vessel |
| JP2018079832A (en) * | 2016-11-17 | 2018-05-24 | ナカシマプロペラ株式会社 | Stern duct |
| CN106985990A (en) * | 2017-03-15 | 2017-07-28 | 中船重工（上海）节能技术发展有限公司 | A kind of preposition flap peculiar to vessel |
| KR20190110857A (en) * | 2018-03-21 | 2019-10-01 | 삼성중공업 주식회사 | Propulsion efficiency enhancing apparatus |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113879498A (en) * | 2021-11-10 | 2022-01-04 | 中国船舶工业集团公司第七0八研究所 | Marine spiral line type guide pipe fin |
| CN115056951A (en) * | 2022-05-23 | 2022-09-16 | 中国船舶工业集团公司第七0八研究所 | Marine hyperbolic fairing wing |
| CN115056951B (en) * | 2022-05-23 | 2024-03-22 | 中国船舶工业集团公司第七0八研究所 | Hyperbolic rectifying wing for ship |
| CN115416832A (en) * | 2022-09-05 | 2022-12-02 | 大连中远海运重工有限公司 | Spiral honeycomb duct energy-saving device for ship |
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Application publication date: 20200103 |