CN112124543B - Ship propeller-rudder combined vortex-eliminating energy-saving device and installation method - Google Patents
Ship propeller-rudder combined vortex-eliminating energy-saving device and installation method Download PDFInfo
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- CN112124543B CN112124543B CN202011011939.XA CN202011011939A CN112124543B CN 112124543 B CN112124543 B CN 112124543B CN 202011011939 A CN202011011939 A CN 202011011939A CN 112124543 B CN112124543 B CN 112124543B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
- B63H1/28—Other means for improving propeller efficiency
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H23/32—Other parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H23/32—Other parts
- B63H23/36—Shaft tubes
Abstract
The invention provides a vortex-eliminating energy-saving device combined with a ship propeller and a rudder and an installation method thereof, wherein the vortex-eliminating energy-saving device comprises a propeller tail shaft arranged at the tail part of a ship body, a propeller is arranged on the propeller tail shaft, a vortex-eliminating device for eliminating vortex is arranged at the tail part of the propeller tail shaft, and the vortex-eliminating device is fixedly connected with a propeller hub of the propeller and rotates along with the propeller tail shaft; the tail of the vortex eliminating device extends to a groove in the rudder blade; the rudder blade is installed at the tail part of the ship body through a rudder blade rotating shaft assembly. The vortex eliminating device is directly connected with the propeller and the tail shaft, and cannot rotate the crosspiece along with the rudder to form resistance behind the propeller, so that a good vortex eliminating function can be still kept when the rudder is turned.
Description
Technical Field
The invention relates to the technical field of ship energy conservation, in particular to a ship paddle rudder combined vortex-eliminating energy-saving device and an installation method.
Background
The ship energy-saving technology has been developed widely and maturely over the years to date, but there is room for further diving and simplifying the installation method.
One of the existing ship energy-saving technologies, the propeller rear vortex-eliminating fin is a mature energy-saving technology, and the energy-saving mechanism of the propeller rear vortex-eliminating fin is a ship hydrodynamic energy-saving device which is arranged on the tail end face of a propeller and used for recovering the energy loss of a propeller hub vortex. The small blades with the same number as the propellers are added to the military cap of the propeller and coaxially rotate along with the propeller. When the ship sails forward, vortex loss energy can be generated in a flow field near a propeller hub when the propeller rotates, and a vortex-eliminating fin arranged behind the propeller hub synchronously works to break up hub vortex and straighten wake flow, so that the torque of the propeller is reduced, the thrust is increased, the vortex energy loss of the propeller is reduced, and the purpose of improving the efficiency is achieved. According to related documents and reports, the vortex-reducing fin is widely adopted in the shipping industry, but the vortex-reducing fin is characterized in that a small propeller is additionally arranged behind a main propeller, the diameter of the small propeller is about 0.2-0.28D of that of the main propeller, the small propeller needs to be manufactured through various processing links such as molding, casting, processing, polishing and the like, and the manufacturing process is complex and the cost is high; the vortex-eliminating energy-saving device which is simple, suitable and easy to install and formed by combining the propeller and the rudder is developed by combining the energy-saving principle of the vortex-eliminating fin and the rudder ball, so that the vortex-eliminating energy-saving device is extremely low in manufacturing cost and more convenient to install, can be quickly and widely popularized and used, and has great economic benefit and social benefit.
The other energy-saving rudder ball in the existing ship energy-saving technology shows that according to a large amount of international and domestic researches and real ship verification: the rudder ball is usually arranged on the rudder blade of the ship and is opposite to the center of the propeller, the rudder ball is firstly hemispherical and extends towards the rear of the rudder blade in two halves to form a long water drop streamline-shaped body, a low-pressure space behind the hub of the propeller is filled, and the rudder ball has good rectification effect on water flow behind the propeller, so that the energy loss caused by turbulent flow and water flow rotation is reduced. The water flow behind the propeller generates tangential and radial induced speeds due to the action of the propeller, wherein the tangential induced speed causes wake flow rotation, not only does not generate thrust but also can cause energy loss, and finally is dissipated into the water as heat. After the long water drop type rudder ball is arranged behind the propeller, water flow behind the propeller hub is forced to flow through the long water drop type rudder ball, and the surface water flow cannot rotate strongly under the action of water flow viscosity, so that the rectification effect is achieved.
The contraction of the wake flow is reduced, and the theory of related propellers shows that the efficiency of the propeller is influenced by the cross section of the wake flow of the propeller, and the ideal propulsion efficiency of the propeller can be improved by increasing the sectional area of the wake flow of the propeller. The water flow behind the propeller has a forward induced speed, so that the wake flow behind the propeller is contracted, and after the long water drop-shaped rudder ball is installed, the wake flow is outwards extruded, so that the contraction of the wake flow is reduced, and the propulsion efficiency of the propeller is improved.
After the long-drop-shaped rudder ball is installed, the excitation of the rudder and the stern is lightened, and the flow field behind the propeller can be changed, so that the excitation of the rudder and the stern caused by the wake flow is improved.
The technology of the rudder ball is simple and widely adopted due to the simple manufacturing process, but a distance neutral position exists in the mounting gap between the energy-saving device and the propeller objectively, so that the distance is not smooth with the transition of the vortex-eliminating fin of the propeller, the vortex behind the propeller is not actually reduced, and the vortex-eliminating effect of the rudder ball behind the propeller is lost. Furthermore, the method comprises the following steps: when the ship steers to enable the rudder blade to rotate by more than 0-35 degrees, the rudder ball rotates along with the rudder blade to form an included angle with the central line of a propeller shaft system, and at the moment, a rudder ball crosspiece is arranged behind the propeller, not only can the effect of reducing vortex after propeller, but also can form resistance and enable the wake flow after propeller is more disordered. In order to achieve the purpose that a weight meter is compared with an energy-saving technology of a submarine digging ship, a paddle rudder combined energy-saving device for efficiently eliminating the back vortex of a propeller is developed, so that the paddle rudder combined vortex-eliminating energy-saving device which is well matched with a rudder behind the propeller is provided, the propulsion efficiency of the propeller is improved, and vortex-eliminating energy-saving and resistance-reducing are realized.
Disclosure of Invention
The invention mainly aims to solve the defects existing in the prior art and provide a vortex-eliminating energy-saving device for a ship propeller-rudder combination and an installation method thereof.
In order to achieve the technical features, the invention is realized as follows: a vortex-eliminating energy-saving device combined with a ship propeller and a rudder comprises a propeller tail shaft arranged at the tail part of a ship body, wherein a propeller is arranged on the propeller tail shaft, a vortex-eliminating device for eliminating vortex is arranged at the tail part of the propeller tail shaft, and the vortex-eliminating device is fixedly connected with a propeller hub of the propeller and rotates along with the propeller tail shaft; the tail of the vortex eliminating device extends to a groove in the rudder blade; the rudder blade is installed at the tail part of the ship body through a rudder blade rotating shaft assembly.
The propeller tail shaft comprises a key groove shaft section, and the vortex eliminating device and the key groove shaft section form key transmission through a flat key; the screw thread shaft section and the conical shaft section are arranged behind the key groove shaft section, a propeller hub of the propeller is installed on the conical shaft section in a matched mode through a key, a screw thread retaining ring is fixedly installed on the screw thread shaft section and located on the outer side of the propeller, and the screw thread retaining ring is fixedly connected with the propeller through a first bolt assembly; the vortex eliminating device is fixedly connected with the propeller through a second bolt assembly, the conical shaft section is in transition connection with the bearing shaft section, the bearing shaft section is supported on the bearing seat through a bearing, the bearing seat is installed on the tail shaft seat through a third bolt assembly, the tail part of the bearing shaft section is a sealing shaft section, and the sealing shaft section is matched with the tail shaft seat.
A sealing sleeve is arranged between the sealing shaft section and the tail shaft seat, the sealing sleeve is fixedly installed on the tail shaft seat through a fourth bolt assembly, sealing filler is arranged between the sealing sleeve and the sealing shaft section, and the tail shaft seat is fixedly connected with the ship body through a shaft seat supporting plate.
The vortex eliminating device comprises a vortex eliminating shaft seat, a connecting shaft sleeve is arranged at the central part of the vortex eliminating shaft seat, and the connecting shaft sleeve is matched and connected with a key groove shaft section of the propeller tail shaft and transmits torque; a cylindrical shell is fixed on the outer end face of the vortex eliminating shaft seat, a streamline shell is transited at the tail of the cylindrical shell, and the outer end face of the streamline shell is sealed by an arc cover; the other end of the vortex eliminating shaft seat is provided with a connecting flange, flange through holes are uniformly distributed and processed on the connecting flange, and the flange through holes are matched and connected with the end face of the propeller through a second bolt assembly; radial threaded holes which are uniformly distributed along the radial direction are processed on the vortex eliminating shaft seat.
The outer fit of the vortex eliminating shaft seat is provided with a sealing ring assembly, the sealing ring assembly is formed by two halves and comprises an upper half circle and a lower half circle, stepped holes radially arranged along the upper half circle and the lower half circle are machined in the middle of the upper half circle and the lower half circle, radial bolt assemblies matched with radial threaded holes are installed on the stepped holes, and the whole sealing ring assembly is fixed outside the vortex eliminating shaft seat.
The streamline shell and the cylindrical shell are of an integrated structure and are made of seamless steel tube materials by adopting a shrinkage pipe type hot processing technology.
The installation method of the vortex-eliminating energy-saving device of the ship propeller rudder combination comprises the following steps:
firstly, a propeller is positioned and installed on a conical shaft section of a propeller tail shaft through a threaded retainer ring;
step two, fixedly connecting the threaded retainer ring with the propeller through a first bolt assembly;
step three, positioning and mounting a connecting shaft sleeve of the vortex eliminating device on a key groove shaft section of the propeller tail shaft through a flat key;
step four, fixedly connecting a connecting flange of the vortex eliminating device with the end face of the propeller through a first bolt assembly;
fifthly, fixedly mounting an upper semicircular ring and a lower semicircular ring of the sealing ring assembly outside the vortex eliminating shaft seat through a radial bolt assembly, and further sealing and protecting the internal structure of the sealing ring assembly;
and sixthly, ensuring that the streamline shell of the vortex reducing device extends to the inner part of the rudder blade for a section of length during installation.
The invention has the following beneficial effects:
1. the vortex-eliminating energy-saving device with the structure can efficiently eliminate vortex behind the propeller, so that the rear part of the propeller is well matched with the rudder blade, the combined vortex-eliminating energy-saving effect of the propeller and the rudder is finally achieved, the propulsion efficiency of the propeller is improved, and vortex-eliminating energy conservation and resistance reduction are realized. In addition, because the vortex eliminating device is fixedly connected with the propeller, the vortex eliminating device cannot be influenced by steering of the steering engine, and the optimal energy dissipation effect can be obtained even when the rudder blade turns.
2. The vortex eliminating device well replaces the existing rudder ball vortex eliminating mode, and the vortex eliminating device cannot be influenced by steering of the rudder blade. Thereby reducing the negative effect of the propeller wake vortex as much as possible.
3. Through foretell sealing washer subassembly can play fine sealed guard action to the inner structure of vortex axle seat that disappears.
Drawings
The invention is further illustrated by the following figures and examples.
Fig. 1 is a front view of the overall mounting structure of the present invention.
Fig. 2 is a view a-a of fig. 1 of the present invention.
Fig. 3 is a block diagram of the mounting of the components on the propeller shaft of the present invention.
Fig. 4 is a front view of the vortex reducing device of the present invention.
Fig. 5 is a view from direction B of fig. 4 in accordance with the present invention.
Fig. 6 is a cross-sectional view of the vortex reducing device of the present invention.
Fig. 7 is a view of fig. 6 from C-C in accordance with the present invention.
Figure 8 is a front cross-sectional view of the seal ring assembly of the present invention.
Figure 9 is a side view of the hush ring assembly of the present invention.
In the figure: the device comprises a rudder blade 1, a vortex eliminating device 2, a propeller 3, a propeller tail shaft 4, a groove 5, a rudder blade rotating shaft assembly 6, a ship body 7, a flat key 8, a threaded retainer ring 9, a first bolt assembly 10, a second bolt assembly 11, a sealing ring assembly 12, a radial bolt assembly 13, a bearing seat 14, a bearing 15, a third bolt assembly 16, a fourth bolt assembly 17, a tail shaft seat 18, a sealing sleeve 19, a sealing filler 20 and a shaft seat supporting plate 21;
the device comprises a streamline shell 201, a cylindrical shell 202, a vortex eliminating shaft seat 203, a connecting flange 204, a radial threaded hole 205, a flange through hole 206, an arc cover 207 and a connecting shaft sleeve 208;
a keyway shaft section 401, a threaded shaft section 402, a tapered shaft section 403, a bearing shaft section 404, and a seal shaft section 405;
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
Example 1:
as shown in fig. 1 to 9, a vortex-eliminating energy-saving device for a combination of a ship propeller and a rudder comprises a propeller tail shaft 4 installed at the tail of a ship body 7, wherein a propeller 3 is installed on the propeller tail shaft 4, a vortex-eliminating device 2 for eliminating vortex is installed at the tail of the propeller tail shaft 4, and the vortex-eliminating device 2 is fixedly connected with a propeller hub of the propeller 3 and rotates along with the propeller tail shaft 4; the tail part of the vortex reducing device 2 extends to a groove 5 inside the rudder blade 1; the rudder blade 1 is arranged at the tail part of the ship body 7 through a rudder blade rotating shaft assembly 6. The vortex-eliminating energy-saving device with the structure can efficiently eliminate vortex behind the propeller, so that the rear part of the propeller is well matched with the rudder blade, the combined vortex-eliminating energy-saving effect of the propeller and the rudder is finally achieved, the propulsion efficiency of the propeller is improved, and vortex-eliminating energy conservation and resistance reduction are realized. In addition, because the vortex elimination device 2 is fixedly connected with the propeller 3, the vortex elimination device is not influenced by steering of the steering engine, and the optimal energy dissipation effect can be obtained even when the rudder blade turns.
Further, the propeller tail shaft 4 comprises a key groove shaft section 401, and the vortex elimination device 2 and the key groove shaft section 401 form key transmission through a flat key 8; a threaded shaft section 402 and a tapered shaft section 403 are arranged behind the key groove shaft section 401, a propeller hub of the propeller 3 is installed on the tapered shaft section 403 in a key fit manner, a threaded retainer ring 9 is fixedly installed on the threaded shaft section 402 and positioned on the outer side of the propeller 3, and the threaded retainer ring 9 is fixedly connected with the propeller 3 through a first bolt assembly 10; the vortex eliminating device 2 is fixedly connected with the propeller 3 through the second bolt component 11, the conical shaft section 403 is in transition connection with the bearing shaft section 404, the bearing shaft section 404 is supported on the bearing seat 14 through the bearing 15, the bearing seat 14 is installed on the tail shaft seat 18 through the third bolt component 16, the tail of the bearing shaft section 404 is a sealing shaft section 405, and the sealing shaft section 405 is matched with the tail shaft seat 18. The propeller tail shaft 4 with the structure can be used for installing the propeller 3 and the vortex-eliminating device 2, and then the reliable connection of the propeller 3 and the vortex-eliminating device is realized.
Further, a sealing sleeve 19 is arranged between the sealing shaft section 405 and the tail shaft seat 18, the sealing sleeve 19 is fixedly installed on the tail shaft seat 18 through a fourth bolt assembly 17, a sealing filler 20 is arranged between the sealing sleeve 19 and the sealing shaft section 405, and the tail shaft seat 18 is fixedly connected with the ship body 7 through a shaft seat supporting plate 21. The tail part of the propeller tail shaft 4 can be reliably sealed through the structure.
Further, the vortex elimination device 2 comprises a vortex elimination shaft seat 203, a connecting shaft sleeve 208 is arranged at the center of the vortex elimination shaft seat 203, and the connecting shaft sleeve 208 is matched and connected with a key way shaft section 401 of the propeller tail shaft 4 and transmits torque; a cylindrical shell 202 is fixed on the outer end face of the vortex eliminating shaft seat 203, a streamline shell 201 is transited at the tail of the cylindrical shell 202, and the outer end face of the streamline shell 201 is sealed by an arc cover 207; the other end of the vortex eliminating shaft seat 203 is provided with a connecting flange 204, flange through holes 206 are uniformly distributed and processed on the connecting flange 204, and the flange through holes 206 are connected with the end face of the propeller 3 through the second bolt assembly 11 in a matched manner; radial threaded holes 205 uniformly distributed along the radial direction are machined in the deswirler bearing seat 203. The vortex eliminating device 2 well replaces the existing rudder ball vortex eliminating mode, and the vortex eliminating device cannot be influenced by steering of rudder blades. Thereby reducing the negative effect of the propeller wake vortex as much as possible.
Further, the sealing ring assembly 12 is installed in the external matching of the deswirler scroll seat 203, the sealing ring assembly 12 is formed by two halves and comprises an upper half circle 1201 and a lower half circle 1203, stepped holes 1202 radially arranged along the upper half circle 1201 and the lower half circle 1203 are processed in the middle of the upper half circle 1201 and the lower half circle 1203, radial bolt assemblies 13 used for being matched with the radial threaded holes 205 are installed on the stepped holes 1202, and the whole sealing ring assembly 12 is fixed to the external of the deswirler scroll seat 203. The sealing ring assembly 12 can play a good role in sealing and protecting the internal structure of the vortex elimination shaft seat 203.
And the split structure simplifies the installation process and enhances the convenience of use.
Further, the streamline housing 201 and the cylindrical housing 202 are of an integrated structure and are made of seamless steel pipe materials by adopting a contraction pipe type hot processing technology. The forming process simplifies the manufacturing process and reduces the manufacturing cost.
Example 2:
the installation method of the vortex-eliminating energy-saving device of the ship propeller rudder combination comprises the following steps:
firstly, positioning and mounting a propeller 3 on a conical shaft section 403 of a propeller tail shaft 4 through a threaded retainer ring 9;
step two, fixedly connecting the threaded retainer ring 9 with the propeller 3 through the first bolt assembly 10;
thirdly, the connecting shaft sleeve 208 of the vortex eliminating device 2 is positioned and installed on the key groove shaft section 401 of the propeller tail shaft 4 through a flat key;
step four, fixedly connecting the connecting flange 204 of the vortex eliminating device 2 with the end surface of the propeller 3 through the first bolt assembly 10;
step five, fixedly mounting an upper semicircle 1201 and a lower semicircle 1203 of the sealing ring assembly 12 outside the deswirler bearing seat 203 through a radial bolt assembly 13, and further sealing and protecting the internal structure of the deswirler bearing seat;
step six, during installation, the streamline shell 201 of the vortex reducing device 2 is ensured to extend to the inside of the rudder blade 1 for a certain length.
Example 3:
the specific structural dimensions of the vortex reducing device 2 are based on the diameter of a propeller of a ship and the diameter of a propeller shaft, wherein the diameter of the propeller D is known, and the diameter of the propeller shaft D is known.
Specifically, when the size of the vortex reducing device 2 is designed, the relevant parameters are calculated and determined according to the following formula:
propeller hub diameter d1=0.18~0.20D mm；
The length L = 0.18-0.20D mm of the propeller hub;
length l of vortex elimination device1=2~2.5Lmm；
Diameter d of front end of vortex eliminating device2=d1mm；
Diameter d of rear end of vortex-eliminating device3= thickness tmm of rudder blade where the vortex eliminating device extends into the rudder blade;
inner hub diameter d of vortex eliminating device4=0.5d；
Length l of inner hub of vortex-eliminating device2=0.25~0.28d；
Thickness t of connecting flange of vortex eliminating device2=0.05d；
The number h = 6-8 of connecting flange bolts;
the number of screw holes/special screw holes for connecting vortex-eliminating devices is 16-20/6.
The working principle of the invention is as follows:
the front edge of the rudder blade is designed into a groove according to the shape and the size of the vortex eliminating device, the vortex eliminating device arranged on the propeller tail shaft and the propeller directly extends into the rudder blade, and a proper gap is reserved, so that when the propeller rotates, the vortex eliminating device can stably reduce the tail vortex formed by the propeller for a long time, and the vortex eliminating device extends into the rudder blade through the groove on the rudder blade; when the ship sails forwards without steering, the vortex-eliminating device is connected with the rudder blade to form a whole, and compared with the arrangement that a single rudder ball needs to be arranged at a certain distance from the propeller, the adverse effect formed by the gap between the rudder ball and the propeller is safely eliminated; when the ship steers, the vortex eliminating device is directly connected with the propeller and the propeller tail shaft, the crosspiece cannot be rotated along with the rudder to form resistance behind the propeller, and the good vortex eliminating function can be still kept.
Claims (4)
1. The vortex-eliminating energy-saving device for the combination of the ship propeller and the rudder is characterized by comprising a propeller tail shaft (4) arranged at the tail part of a ship body (7), wherein a propeller (3) is arranged on the propeller tail shaft (4), a vortex-eliminating device (2) for eliminating vortex is arranged at the tail part of the propeller tail shaft (4), and the vortex-eliminating device (2) is fixedly connected with a propeller hub of the propeller (3) and rotates along with the propeller tail shaft (4); the tail part of the vortex eliminating device (2) extends to a groove (5) in the rudder blade (1); the rudder blade (1) is arranged at the tail part of the ship body (7) through a rudder blade rotating shaft assembly (6); the propeller tail shaft (4) comprises a key groove shaft section (401), and the vortex removing device (2) and the key groove shaft section (401) form key transmission through a flat key (8); a threaded shaft section (402) and a tapered shaft section (403) are arranged behind the key groove shaft section (401), a propeller hub of the propeller (3) is installed on the tapered shaft section (403) in a key fit mode, a threaded retainer ring (9) is fixedly installed on the threaded shaft section (402) and located on the outer side of the propeller (3), and the threaded retainer ring (9) is fixedly connected with the propeller (3) through a first bolt assembly (10); the vortex eliminating device (2) is fixedly connected with the propeller (3) through a second bolt assembly (11), the conical shaft section (403) is in transition connection with the bearing shaft section (404), the bearing shaft section (404) is supported on the bearing seat (14) through the bearing (15), the bearing seat (14) is installed on the tail shaft seat (18) through a third bolt assembly (16), the tail part of the bearing shaft section (404) is a sealing shaft section (405), and the sealing shaft section (405) is matched with the tail shaft seat (18);
the vortex eliminating device (2) comprises a vortex eliminating shaft seat (203), a connecting shaft sleeve (208) is arranged at the center of one end of the vortex eliminating shaft seat (203), and the connecting shaft sleeve (208) is matched and connected with a key way shaft section (401) of the propeller tail shaft (4) and transmits torque; a cylindrical shell (202) is fixed on the outer end face of the vortex eliminating shaft seat (203), a streamline shell (201) is in transition at the tail of the cylindrical shell (202), and the outer end face of the streamline shell (201) is sealed through an arc cover (207); the other end of the vortex eliminating shaft seat (203) is provided with a connecting flange (204), flange through holes (206) are uniformly distributed and processed on the connecting flange (204), and the flange through holes (206) are connected with the end face of the propeller (3) in a matched mode through second bolt assemblies (11); radial threaded holes (205) uniformly distributed along the radial direction are machined in the deswirler bearing seat (203);
be provided with seal cover (19) between sealed shaft section (405) and tail axle seat (18), seal cover (19) are through fourth bolt assembly (17) fixed mounting on tail axle seat (18), be provided with between seal cover (19) and sealed shaft section (405) sealing filler (20), tail axle seat (18) are through axle seat backup pad (21) and boats and ships body (7) fixed the linking to each other.
2. The ship paddle rudder combined vortex-eliminating energy-saving device according to claim 1, characterized in that: sealing ring subassembly (12) is installed in the external fit of deswirl shaft seat (203), sealing ring subassembly (12) adopts two halves to synthesize, including last half circle (1201) and lower half circle (1203), the middle part of last half circle (1201) and lower half circle (1203) all processes shoulder hole (1202) along its radial arrangement, install on shoulder hole (1202) and be used for with radial screw hole (205) complex radial bolt subassembly (13) to fix the outside at deswirl shaft seat (203) whole sealing ring subassembly (12).
3. The ship paddle rudder combined vortex-eliminating energy-saving device according to claim 1, characterized in that: the streamline shell (201) and the cylindrical shell (202) are of an integrated structure and are made of seamless steel pipe materials by adopting a contraction pipe type hot processing technology.
4. The method for installing the ship paddle rudder combination vortex-eliminating energy-saving device as claimed in any one of claims 1 to 3 is characterized by comprising the following steps of:
firstly, a propeller (3) is positioned and installed on a conical shaft section (403) of a propeller tail shaft (4) through a threaded retainer ring (9);
step two, fixedly connecting the threaded retainer ring (9) with the propeller (3) through a first bolt assembly (10);
thirdly, a connecting shaft sleeve (208) of the vortex eliminating device (2) is positioned and installed on a key groove shaft section (401) of the propeller tail shaft (4) through a flat key;
step four, fixedly connecting a connecting flange (204) of the vortex eliminating device (2) with the end face of the propeller (3) through a second bolt assembly (11);
fifthly, fixedly mounting an upper half circle (1201) and a lower half circle (1203) of the sealing ring assembly (12) outside the vortex eliminating shaft seat (203) through a radial bolt assembly (13) so as to seal and protect the inner structure of the vortex eliminating shaft seat;
and sixthly, ensuring that the streamline shell (201) of the vortex removing device (2) extends to the inner part of the rudder blade (1) for a section of length during installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011011939.XA CN112124543B (en) | 2020-09-23 | 2020-09-23 | Ship propeller-rudder combined vortex-eliminating energy-saving device and installation method |
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| CN202011011939.XA CN112124543B (en) | 2020-09-23 | 2020-09-23 | Ship propeller-rudder combined vortex-eliminating energy-saving device and installation method |
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| CN112124543B true CN112124543B (en) | 2021-10-22 |
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| CN114834617B (en) * | 2022-03-10 | 2023-05-02 | 宜昌一凡船舶设计有限公司 | Welding type energy-saving vortex eliminating fin and production process thereof |
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| JPS61275096A (en) * | 1985-05-29 | 1986-12-05 | Ishikawajima Harima Heavy Ind Co Ltd | Stern structure |
| CN103347780A (en) * | 2011-01-31 | 2013-10-09 | Abb有限公司 | Arrangement for steering a ship and for supplying power to its propulsion system |
| CN103596839A (en) * | 2011-06-14 | 2014-02-19 | Abb有限公司 | A propulsion arrangement in a ship |
| KR20140052513A (en) * | 2012-10-24 | 2014-05-07 | 현대중공업 주식회사 | A propulsion apparatus for ship |
| CN105517891A (en) * | 2013-06-10 | 2016-04-20 | 卡特彼勒推进产品公司 | Propeller arrangement |
| KR20160000358U (en) * | 2014-07-22 | 2016-02-01 | 대우조선해양 주식회사 | Propelling system for ship |
| CN107200115A (en) * | 2016-03-18 | 2017-09-26 | 日本日联海洋株式会社 | Rudder constructs the preparation method with ship |
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| CN112124543A (en) | 2020-12-25 |
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