CN111674535B - Nacelle propeller suction type resistance suppression and auxiliary heat dissipation device - Google Patents
Nacelle propeller suction type resistance suppression and auxiliary heat dissipation device Download PDFInfo
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- CN111674535B CN111674535B CN202010585602.3A CN202010585602A CN111674535B CN 111674535 B CN111674535 B CN 111674535B CN 202010585602 A CN202010585602 A CN 202010585602A CN 111674535 B CN111674535 B CN 111674535B
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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
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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
- 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
- B63H5/16—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in recesses; with stationary water-guiding elements; Means to prevent fouling of the propeller, e.g. guards, cages or screens
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Abstract
The invention relates to a nacelle propeller suction type resistance restraining and auxiliary heat dissipating device, which starts from a connection area of a nacelle body and a bracket, propels the outer edge of a motor along the nacelle body to the tail part of the nacelle body; the method is characterized in that: comprises a vortex suction module, a flow guide channel module and a water flow propulsion module; the eddy current suction module is arranged on the surface of the nacelle body and is communicated with the inside of the nacelle body; the diversion channel module is arranged in the nacelle body, and two ends of the diversion channel module are respectively connected with the vortex suction module and the water flow propulsion module; the size and the speed of water flow in the device are controlled mainly by adjusting the power of the water flow propelling device; the fluid environment around the nacelle is improved, the pressure resistance is reduced, and the generation of wake vortex is inhibited; the method has the advantages that the low-temperature fluid is utilized to rapidly flow through the nacelle propeller in the process, so that the heat dissipation efficiency of the nacelle propeller is improved, and the area which is difficult to dissipate heat originally is improved.
Description
Technical Field
The invention relates to the technical field of ship propulsion, in particular to a nacelle propeller suction-type resistance restraining and auxiliary heat radiating device.
Background
With the gradual improvement of the performance standard of modern ships, the requirements on navigation performance, energy conservation, environmental protection and the like are more and more strict. Pod propulsion as one of the new propulsion systems has enjoyed great success in the commercial sector due to its outstanding features and performances. The towed pod propeller is a common pod propeller type in the market at present, and the propulsion form of the towed pod propeller is completely different from that of a traditional propeller. The existence of the pod changes the original wake condition of the propeller to a certain extent, and the interaction between the wake and the pod changes the overall performance of the propeller.
In practical application of the conventional towed nacelle propeller at present, a nacelle body flow field and a nacelle body structure influence the overall propelling effect. Firstly, the nacelle is positioned at the downstream of the propeller, the surface of the tail cabin body is folded, the cross section is reduced, and a low-pressure area can be generated in high-speed wake; in contrast, the front end of the nacelle body and the front end of the nacelle bracket squeeze the volume of fluid to form a high-pressure area, and the high-pressure area form pressure resistance to reduce the overall thrust of the propeller, thereby reducing the propulsion efficiency. Secondly, the propeller of the propeller generates lateral force to affect the peripheral flow field of the nacelle, and the course can be ensured only by setting a small amount of deflection angle of the propeller or frequently steering during straight sailing, so that the energy consumption is increased. Meanwhile, the tail flow of the nacelle can form vortex, so that the difference of the service lives of materials on two sides of the nacelle can be caused while the propelling efficiency of the nacelle is reduced, and the nacelle is not suitable for maintenance. Moreover, the built-in propulsion motor in the nacelle, the heating problem of its work is generally directly utilized the surrounding flow field environment through the nacelle wall and dispels the heat, but is restricted by nacelle structure, and the general nacelle body is comparatively wide with the support junction structural design, and vertical bulky, the heat dissipation is difficult. And the flow field is more complicated and the turbulent dissipation is serious. Secondly, utilize the sea water heat dissipation, generally for promoting the radiating effect, generally adopt single layer construction, be difficult to use bilayer structure, can't enjoy advantages such as protection that bilayer structure brought.
Disclosure of Invention
The invention aims to solve the technical problem of providing a nacelle propeller suction resistance restraining and auxiliary heat radiating device, which further optimizes the hydrodynamic performance of a towed nacelle propeller.
In order to solve the technical problems, the technical scheme of the invention is as follows: a nacelle propeller suction type resistance suppression and auxiliary heat dissipation device starts from a connection area of a nacelle body and a support, and propels the outer edge of a motor along the nacelle body to the tail of the nacelle body; the innovation points are as follows: comprises a vortex suction module, a flow guide channel module and a water flow propulsion module; the eddy current suction module is arranged on the surface of the nacelle body and is communicated with the inside of the nacelle body; the diversion channel module is arranged in the nacelle body, and two ends of the diversion channel module are respectively connected with the vortex suction module and the water flow propulsion module;
the vortex suction modules are uniformly distributed on the left side and the right side of the connecting area of the hanging cabin body and the bracket and are communicated with each other, or holes are formed in the front end of the bracket and are arranged in the surface area of the high-pressure area at the front edge of the bracket under the designed working condition; the vortex suction module comprises a fixed frame, a grating, a guide plate, a filter screen and a vortex detection sensor; the fixed frame is embedded in the surface of the pod body and is communicated with the inner wall of the pod body; the grid is arranged on the fixed frame; the filter screen is arranged in the fixed frame and is positioned on the inner side of the grating; the guide plate is arranged on the fixed frame and positioned on the outer side of the grating, the guide plate is of an adjustable structure, the guide plate is provided with a linkage rod, and the linkage rod drives the guide plate to swing through a power source to control the opening and closing of the vortex suction module or adjust the guide direction; the eddy current detection sensor is arranged on the surface of the hanging cabin body and is positioned on the side edge of the fixing frame;
the flow guide channel module comprises a front flow guide pipe and a rear flow guide pipe; the front flow guiding pipe is arranged in the nacelle body, and the input end of the front flow guiding pipe is connected to a channel formed between the vortex suction module and the nacelle body; the output end of the front flow guide pipe is connected with the input end of the rear flow guide pipe, and a cavity for accommodating the water flow propelling module is formed at the joint of the front flow guide pipe and the rear flow guide pipe; a flow sensor is arranged on the inner wall of the joint of the front flow guide pipe and the vortex suction module; the rear guide pipe is arranged along the horizontal direction, the output end of the rear guide pipe extends out of the tail end of the nacelle, and the tail end is provided with a tail sensor; the front flow guiding pipe is of a pipeline structure and is provided with an initial attack angle, the surface of the nacelle body is obliquely inserted into the nacelle body to adapt to propeller wake flow and bulkhead boundary flow from the front of the nacelle body, the front flow guiding pipe is wound on the outer wall of a motor provided with a temperature sensor to provide heat dissipation, and the shape of a water channel is changed.
Furthermore, the front flow guide pipe is of a channel structure, a channel between walls is designed by utilizing a double-layer structure of the nacelle body, and the front flow guide pipe built by utilizing a double-layered wall of the nacelle body enables the propulsion motor to be directly connected with the inner wall of the nacelle body and is used for cooling; meanwhile, the cross or Y-shaped partition plates are arranged in the channels, so that the influence of the lateral force of the front flow field of a part of the nacelle is offset, and the sinking resistance of the nacelle body can be improved.
Furthermore, the diversion channel module adopts a pipeline structure in which a cross-shaped or Y-shaped partition plate is arranged, so that the lateral force from the incoming flow is reduced.
Further, the water flow propulsion module is of a propeller structure or a drainage pump body; the water flow propulsion module is arranged at a position where the front guide pipe is connected with the rear guide pipe to form a cavity, and a power source is connected to the water flow propulsion module; the output main shaft of the motor is extended to be connected with the differential mechanism, so that the water flow propulsion module is driven to operate.
Furthermore, the power source connected with the linkage rod and the water flow propulsion module are both from a motor arranged in the nacelle body by adopting the power source connected with the propeller structure; the water flow propulsion module adopts a power source of the drainage pump body and can be directly provided by the ship body.
Furthermore, a control unit is arranged on the water flow propulsion module, and the control unit adjusts the power of the water flow propulsion module through a vortex detection sensor and a tail sensor or through a temperature sensor on a nacelle motor.
The invention has the advantages that:
1) the invention mainly controls the size and the speed of water flow in the device by adjusting the power of the water flow propelling device; the fluid environment around the nacelle is improved, the pressure resistance is reduced, and the generation of wake vortex is inhibited; in the process, the low-temperature fluid flows through the pod propeller quickly, so that the heat dissipation efficiency of the pod propeller is improved, and the original area difficult to dissipate heat is improved;
2) according to the invention, low-temperature fluid is sucked in a high-pressure area at the front side of the nacelle body, so that the fluid lateral force generated by the propeller is reduced, water flow is guided out to a low-pressure area at the tail part, the pressure difference between the front and the rear of the nacelle is reduced, and the resistance effect caused by wake vortex formation on the nacelle propeller is inhibited; meanwhile, the low-temperature fluid flows through the motor in a short distance, so that the heat dissipation efficiency of the motor is improved, and heat dissipation is performed on areas difficult to dissipate heat; in the process, the original vacant space and the original power structure of the nacelle body are utilized, adverse factors in the traditional design are reduced, and the modification of the original mature structure is reduced by utilizing automation; the nacelle propeller is more available due to the double-wall structure, the adaptability of the nacelle propeller to different hydrodynamic environments is integrally improved, the stability of a nacelle propulsion system is improved, the nacelle propeller is more convenient and safer, the navigation cost is integrally reduced, and the hydrodynamic performance of the nacelle during working is effectively improved.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic view of the overall structure of a nacelle propeller suction resistance suppression and auxiliary heat dissipation device according to the present invention.
Fig. 2 is a nacelle flow plant pressure distribution diagram of a nacelle propeller suction resistance suppression and auxiliary heat dissipation device of the present invention.
Fig. 3 is a front-tail cone same-horizontal-plane pressure distribution diagram of the nacelle propeller suction resistance suppression and auxiliary heat dissipation device of the present invention.
Fig. 4 is a partial structure view of a diversion channel module of a nacelle propeller suction resistance suppression and auxiliary heat dissipation device according to the present invention.
Fig. 5 is a cross-sectional relative velocity diagram of a nacelle body of the nacelle propeller suction resistance suppression and auxiliary heat dissipation device of the present invention.
Fig. 6 is a diagram of internal turbulent dissipation of boundary layer flow of a nacelle body of the nacelle propeller suction resistance suppression and auxiliary heat dissipation device according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The suction type resistance restraining and auxiliary heat dissipating device of the pod propeller is shown in fig. 1, and the device starts from a connection area of a pod body and a bracket, pushes the outer edge of a motor along the pod body and reaches the tail part of the pod body; comprises a vortex suction module 1, a flow guide channel module 2 and a water flow propulsion module 3; the eddy current suction module 1 is arranged on the surface of the nacelle body and is communicated with the inside of the nacelle body; the diversion channel module 2 is arranged in the nacelle body, and two ends of the diversion channel module 2 are respectively connected with the vortex suction module 1 and the water flow propulsion module 3.
The vortex suction modules 1 are uniformly distributed on the left side and the right side of the connecting area of the hanging cabin body and the bracket and are communicated with each other, or holes are formed in the front end of the bracket and are arranged in the surface area of the high-pressure area at the front edge of the bracket under the designed working condition; as shown in fig. 4, the vortex suction module 1 includes a fixed frame 11, a grill 12, a baffle 13, a screen 14, and a vortex detection sensor 15; the fixed frame 11 is embedded in the surface of the nacelle body, and the fixed frame 11 is communicated with the inner wall of the nacelle body; the grid 12 is mounted on the fixed frame 11; the filter screen 14 is installed in the fixed frame 11 to be positioned at the inner side of the grill 12; the guide plate 14 is arranged on the fixed frame and positioned on the outer side of the grid 12, the guide plate 13 is an adjustable structure, the guide plate 13 is provided with a linkage rod, and the linkage rod drives the guide plate 13 to swing through a power source to control the opening and closing of the vortex suction module 2 or adjust the flow guide direction; the eddy current detection sensor 15 is arranged on the surface of the nacelle body and is positioned on the side of the fixed frame 11.
The diversion channel module 2 comprises a front diversion pipe 21 and a rear diversion pipe 22; the front flow guiding pipe 21 is arranged in the nacelle body, and the input end of the front flow guiding pipe 21 is connected to a channel formed between the vortex suction module 1 and the nacelle body; the output end of the front flow guide pipe 21 is connected with the input end of the rear flow guide pipe 22, and a cavity for accommodating the water flow propelling module is formed at the joint of the front flow guide pipe 21 and the rear flow guide pipe 22; a flow sensor 16 is arranged on the inner wall of the joint of the front flow guide pipe 21 and the vortex suction module 1; the rear guide pipe 22 is arranged along the horizontal direction, the output end of the rear guide pipe 22 extends out of the tail end of the nacelle, and the tail end is provided with a tail sensor; the front flow guiding pipe 21 is of a pipeline structure and is provided with an initial attack angle, the surface of the nacelle body is obliquely inserted into the nacelle body to adapt to propeller wake flow and bulkhead boundary flow from the front of the nacelle body, and the front flow guiding pipe is wound on the outer wall of a motor provided with a temperature sensor to provide heat dissipation and change the shape of a water channel.
The front diversion pipe 21 is of a channel structure, a channel between walls is designed by utilizing a double-layer structure of the nacelle body, the front diversion pipe built by utilizing a double-wall structure of the nacelle body is utilized, so that the propulsion motor is directly connected with the inner wall of the nacelle body, and the front diversion pipe is utilized for cooling; meanwhile, the cross or Y-shaped partition plates are arranged in the channels, so that the influence of the lateral force of the front flow field of a part of the nacelle is offset, and the sinking resistance of the nacelle body can be improved.
The diversion channel module 2 adopts a pipeline structure in which a cross-shaped or Y-shaped partition plate is arranged, so that the lateral force from the incoming flow is reduced.
The water flow propulsion module 3 is of a propeller structure or a drainage pump body; the water flow propulsion module 3 is arranged at a position where the front guide pipe 21 is connected with the rear guide pipe 22 to form a cavity, and the water flow propulsion module 3 is connected with a power source; the output main shaft of the motor is extended to be connected with the differential mechanism, so that the water flow propulsion module is driven to operate.
The power source connected with the linkage rod and the water flow propulsion module are both from a motor arranged in the nacelle body by adopting the power source connected with the propeller structure; the water flow propulsion module 3 adopts a power source of a drainage pump body and can be directly provided by the ship body.
The water flow propulsion module 3 is provided with a control unit, and the control unit adjusts the power of the water flow propulsion module through a vortex detection sensor and a tail sensor or through a temperature sensor on a nacelle motor.
As shown in fig. 2, there is a high pressure area at the front end of the nacelle stand and the nacelle body, and an opposite low pressure area at the rear of the nacelle; if the diameter of the pod body is D, the diameter of the high-pressure area is about 0.75D, and the diameter of the low-pressure area is 0.2D; setting the outlet of the rear diversion channel to be about 0.15D, and diverting the fluid in the high-pressure area to effectively inhibit the formation of the low-pressure area, wherein taking the simplest diversion channel module as an example, the length of a fixed frame is set to be 0.3D, and the length-width ratio is 2: 1; the outlet position of the rear guide pipe is arranged, as shown in fig. 3, the low-pressure center can be obviously found, and the outlet position is arranged at the low-pressure center of the tail vortex of the nacelle.
Turbulent kinetic energy dissipation exists in the working process of the nacelle, and the turbulent kinetic energy dissipation rate refers to the speed of converting turbulent kinetic energy into molecular thermal motion kinetic energy under the action of molecular viscosity; it is generally measured in terms of the turbulent kinetic energy lost per mass of fluid per unit time, expressed as epsilon:
Cμusually 0.09; k is turbulence energy, and is estimated by turbulence average speed and turbulence intensity; l is the turbulence scale. The larger the turbulence dissipation degree is, the more the internal energy generated by the same turbulence is, the more the heat dissipation is not facilitated; as shown in fig. 5 and 6, the nacelle has a high relative speed at the joint between the nacelle body and the support, and the turbulent dissipation near the boundary layer is increased rapidly, which is not favorable for rapidly dissipating the heat of the propulsion motor.
The working principle of the invention is as follows: the low-temperature fluid is sucked in a high-pressure area at the front side of the nacelle body, so that the lateral force of the fluid generated by the propeller is reduced, the water flow is guided out to a low-pressure area at the tail part, the pressure difference between the front and the rear of the nacelle is reduced, and the resistance effect caused by wake vortex formation on the propeller of the nacelle is inhibited; meanwhile, the low-temperature fluid flows through the motor in a short distance, so that the heat dissipation efficiency of the motor is improved, and heat dissipation is performed on areas difficult to dissipate heat.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A nacelle propeller suction type resistance suppression and auxiliary heat dissipation device starts from a connection area of a nacelle body and a support, and propels the outer edge of a motor along the nacelle body to the tail of the nacelle body; the method is characterized in that: comprises a vortex suction module, a flow guide channel module and a water flow propulsion module; the eddy current suction module is arranged on the surface of the nacelle body and is communicated with the inside of the nacelle body; the diversion channel module is arranged in the nacelle body, and two ends of the diversion channel module are respectively connected with the vortex suction module and the water flow propulsion module;
the vortex suction modules are uniformly distributed on the left side and the right side of the connecting area of the hanging cabin body and the bracket and are communicated with each other, or holes are formed in the front end of the bracket and are arranged in the surface area of the high-pressure area at the front edge of the bracket under the designed working condition; the vortex suction module comprises a fixed frame, a grating, a guide plate, a filter screen and a vortex detection sensor; the fixed frame is embedded in the surface of the pod body and is communicated with the inner wall of the pod body; the grid is arranged on the fixed frame; the filter screen is arranged in the fixed frame and is positioned on the inner side of the grating; the guide plate is arranged on the fixed frame and positioned on the outer side of the grating, the guide plate is of an adjustable structure, the guide plate is provided with a linkage rod, and the linkage rod drives the guide plate to swing through a power source to control the opening and closing of the vortex suction module or adjust the guide direction; the eddy current detection sensor is arranged on the surface of the hanging cabin body and is positioned on the side edge of the fixing frame;
the flow guide channel module comprises a front flow guide pipe and a rear flow guide pipe; the front flow guiding pipe is arranged in the nacelle body, and the input end of the front flow guiding pipe is connected to a channel formed between the vortex suction module and the nacelle body; the output end of the front flow guide pipe is connected with the input end of the rear flow guide pipe, and a cavity for accommodating the water flow propelling module is formed at the joint of the front flow guide pipe and the rear flow guide pipe; a flow sensor is arranged on the inner wall of the joint of the front flow guide pipe and the vortex suction module; the rear guide pipe is arranged along the horizontal direction, the output end of the rear guide pipe extends out of the tail end of the nacelle, and the tail end is provided with a tail sensor; the front flow guiding pipe is of a pipeline structure and is provided with an initial attack angle, the surface of the nacelle body is obliquely inserted into the nacelle body to adapt to propeller wake flow and bulkhead boundary flow from the front of the nacelle body, the front flow guiding pipe is wound on the outer wall of a motor provided with a temperature sensor to provide heat dissipation, and the shape of a water channel is changed.
2. The pod propeller suction drag suppression and auxiliary heat dissipation device of claim 1, wherein: the front diversion pipe is of a channel structure, a double-layer structure of the nacelle body is utilized, channels between walls are designed, the front diversion pipe built by the double walls of the nacelle body is utilized, the propulsion motor is directly connected with the inner wall of the nacelle body, and the front diversion pipe is utilized for cooling; meanwhile, the cross or Y-shaped partition plates are arranged in the channels, so that the influence of the lateral force of the front flow field of a part of the nacelle is offset, and the sinking resistance of the nacelle body can be improved.
3. The pod propeller suction drag suppression and auxiliary heat dissipation device of claim 1, wherein: the diversion channel module adopts a pipeline structure, and is provided with a cross or Y-shaped partition plate, so that the lateral force from the incoming flow is reduced.
4. The pod propeller suction drag suppression and auxiliary heat dissipation device of claim 1, wherein: the water flow propulsion module is of a propeller structure or a drainage pump body; the water flow propulsion module is arranged at a position where the front guide pipe is connected with the rear guide pipe to form a cavity, and a power source is connected to the water flow propulsion module; the output main shaft of the motor is extended to be connected with the differential mechanism, so that the water flow propulsion module is driven to operate.
5. The pod propeller suction drag suppression and auxiliary heat dissipation device of claim 1 or 4, wherein: the power source connected with the linkage rod and the water flow propulsion module are both from a motor arranged in the nacelle body by adopting the power source connected with the propeller structure; the water flow propulsion module adopts a power source of the drainage pump body and can be directly provided by the ship body.
6. The pod propeller suction drag suppression and auxiliary heat dissipation device of claim 4, wherein: the water flow propulsion module is provided with a control unit, and the control unit adjusts the power of the water flow propulsion module through a vortex detection sensor and a tail sensor or through a temperature sensor on a nacelle motor.
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| CN114194403B (en) * | 2022-01-25 | 2023-06-02 | 广东汇天航空航天科技有限公司 | Heat radiation structure of driving device and aircraft |
| CN114435570A (en) * | 2022-03-04 | 2022-05-06 | 江苏科技大学 | Pod propeller with additional energy-saving device behind paddle |
| CN115924049A (en) * | 2023-03-15 | 2023-04-07 | 哈尔滨工程大学 | Marine propulsion device based on thermal effect drag reduction |
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| CN1393372A (en) * | 2001-06-29 | 2003-01-29 | 三菱重工业株式会社 | Shipping propelling equipment |
| CN110435864A (en) * | 2018-05-04 | 2019-11-12 | 西门子股份公司 | Gondola driver |
| CN111216861A (en) * | 2020-03-24 | 2020-06-02 | 江苏科技大学 | Novel combined vortex-fin-eliminating device of pod propeller and design method thereof |
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Application publication date: 20200918 Assignee: NANJING HIGH ACCURATE MARINE EQUIPMENT Co.,Ltd. Assignor: JIANGSU University OF SCIENCE AND TECHNOLOGY Contract record no.: X2022990000313 Denomination of invention: A suction resistance suppression and auxiliary heat dissipation device for POD propeller Granted publication date: 20210430 License type: Common License Record date: 20220620 |