CN219927952U - Conduit structure of streamline inner wall and propeller using same - Google Patents
Conduit structure of streamline inner wall and propeller using same Download PDFInfo
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- CN219927952U CN219927952U CN202321486673.3U CN202321486673U CN219927952U CN 219927952 U CN219927952 U CN 219927952U CN 202321486673 U CN202321486673 U CN 202321486673U CN 219927952 U CN219927952 U CN 219927952U
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- 239000012530 fluid Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to a conduit structure of a streamline inner wall and a propeller structure using the conduit structure, which comprises a conduit, a first propeller, a second propeller and a rotating shaft, wherein the first propeller and the second propeller are both rotatably arranged on the inner wall of the conduit, the length direction of the rotating shaft is the same as the length direction of the conduit, the first propeller is fixedly sleeved at the front end of the rotating shaft, and the second propeller is fixedly sleeved at the rear end of the rotating shaft; the inner wall of first screw is equipped with first cambered surface, the inner wall of second screw is equipped with the second cambered surface, first cambered surface and second cambered surface are by the continuous shrink of front and back. The utility model increases hydrodynamic performance without changing motor power, and solves the problem that the traditional pushing machine needs to consume larger power to obtain higher pushing efficiency.
Description
Technical Field
The utility model relates to the technical field of propellers, in particular to a conduit structure of a streamline inner wall and a propeller using the same.
Background
At present, a ship propeller is a power device for providing power for a ship and driving the ship to sail, and is mainly divided into two major types, namely manpower and machinery, wherein the manpower propeller comprises a ship oar, a ship oar and the like, and the machinery propeller is mainly a propeller, and the propeller is usually driven by an engine and can also be driven by a motor.
The manual marine propeller provides smaller power for ships, mainly provides power for small ships with low sailing speed, and is often applied to water entertainment, sports and other scenes.
The power provided by the mechanical marine propeller can be large or small, and is the main power device of the current ship. At present, the navigational speed of the large and medium-sized ships is generally less than 30 knots, the navigational speed is lower, and if the navigational speed is increased, larger power is required to be increased, so that the economical efficiency is greatly reduced. For a few high speed boats, higher speeds are also achieved with greater power consumption and propulsion efficiency is lower.
Disclosure of Invention
The utility model aims to provide a conduit structure of a streamline inner wall, which increases hydrodynamic performance under the condition of not changing motor power and solves the problem that a traditional pushing machine needs to consume larger power to obtain higher pushing efficiency.
The utility model aims to provide a propeller, which adopts the conduit structure with the streamline inner wall, so that the total resistance of the propeller can be reduced, the propulsion efficiency of the propeller is improved, and the problem that a traditional pushing machine needs to consume larger power to obtain higher propulsion efficiency is solved.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a conduit structure of streamline inner wall and use its propeller, includes pipe, first screw, second screw and pivot, first screw and second screw all rotate install in the inner wall of pipe, the length direction of pivot is the same with the length direction of pipe, first screw fixed cover is located the front end of pivot, the fixed cover of second screw is located the rear end of pivot;
the inner wall of first screw is equipped with first cambered surface, the inner wall of second screw is equipped with the second cambered surface, first cambered surface and second cambered surface are by the continuous shrink of front and back.
Optionally, the diameter of the rear end of the first cambered surface is larger than the diameter of the front end of the second cambered surface, and the first cambered surface and the second cambered surface form a discontinuous streamline structure which continuously contracts from front to back.
Optionally, the front end of pipe is equipped with leading kuppe, the inboard of leading kuppe is equipped with the third cambered surface, the rear end of third cambered surface with first cambered surface is connected, the third cambered surface first cambered surface with the second cambered surface forms intermittent front to back continuous shrink's streamline structure.
Optionally, the rear end of pipe is equipped with the rear-mounted kuppe, the inboard of rear-mounted kuppe is equipped with the fourth cambered surface, the front end of fourth cambered surface with the second cambered surface is connected, third cambered surface first cambered surface second cambered surface with the fourth cambered surface forms intermittent front to back continuous shrink's streamline structure.
Optionally, a fifth cambered surface is arranged on the inner wall of the conduit, the front end of the fifth cambered surface is connected with the first cambered surface, and the rear end of the fifth cambered surface is connected with the second cambered surface; the third cambered surface, the first cambered surface, the fifth cambered surface, the second cambered surface and the fourth cambered surface form an uninterrupted streamline structure which continuously contracts from front to back.
Optionally, an arc surface is arranged on the outer side of the rear dome, the arc surface is continuously enlarged from outside to inside, and the arc surface is connected with the rear end of the fourth arc surface.
Optionally, the front end of the third cambered surface is connected with the outer wall of the catheter, and the third cambered surface is in a parabolic shape protruding towards the front end.
A propeller comprises a conduit structure with a streamline inner wall.
Compared with the prior art, the embodiment of the utility model has the following beneficial effects:
1. the inner wall of first screw is provided with the first cambered surface of continuous shrink, and the inner wall of second screw also is provided with the second cambered surface of continuous shrink, and the fluid can be under the guide of first cambered surface and second cambered surface, accelerates the center that flows to the pipe, reduces the fluid to the solid resistance, can effectively reduce the emergence of air vaporization phenomenon on the screw blade, improves propulsion efficiency, reduces noise production, reduces cavitation phenomenon and takes place, has protected the structure of screw, improves thrust output. Compared with the traditional propeller with the double-stage propeller, the scheme can increase hydrodynamic performance under the condition of not changing the power of the motor, and solves the problem that the traditional pushing machine needs to consume larger power to obtain higher propulsion efficiency;
2. the diameters of the first cambered surface and the second cambered surface are limited, so that the front end diameter of the second cambered surface is smaller than the rear end diameter of the first cambered surface, the first cambered surface and the second cambered surface form a broken streamline structure which continuously contracts from front to back, the integral streamline of the inner wall of the guide pipe is improved, and the resistance of the propeller is reduced.
Drawings
FIG. 1 is a cross-sectional view of a conduit structure with a streamlined inner wall according to an embodiment of the present utility model;
FIG. 2 is a cross-sectional view of a first propeller and a second propeller according to one embodiment of the present utility model;
FIG. 3 is a schematic view of a first propeller and a second propeller according to an embodiment of the present utility model;
FIG. 4 is a schematic view of a propeller according to an embodiment of the present utility model;
wherein, 1, the conduit; 11. a fifth cambered surface; 2. a front air guide sleeve; 21. a third cambered surface; 3. a rear air guide sleeve; 31. a fourth cambered surface; 32. an arc surface; 4. a first propeller; 41. a first cambered surface; 5. a second propeller; 51. a second cambered surface; 6. a rotating shaft; 7. a propeller.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly, for distinguishing between the descriptive features, and not sequentially, and not lightly.
In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
A streamline inner wall conduit structure and a propeller using the same according to an embodiment of the present utility model will be described with reference to fig. 1 to 4.
The conduit structure of the streamline inner wall comprises a conduit 1, a first propeller 4, a second propeller 5 and a rotating shaft 6, wherein the first propeller 4 and the second propeller 5 are rotatably arranged on the inner wall of the conduit 1, the length direction of the rotating shaft 6 is the same as the length direction of the conduit 1, the first propeller 4 is fixedly sleeved at the front end of the rotating shaft 6, and the second propeller 5 is fixedly sleeved at the rear end of the rotating shaft 6;
the inner wall of the first propeller 4 is provided with a first cambered surface 41, the inner wall of the second propeller 5 is provided with a second cambered surface 51, and both the first cambered surface 41 and the second cambered surface 51 continuously shrink from front to back.
According to the conduit structure of the streamline inner wall, the first propeller 4 and the second propeller 5 are arranged in the conduit 1 front and back, so that the first propeller 4 and the second propeller 5 act together to generate axial thrust which is sequential or forward, and the propeller 7 with the double-stage propeller can be applied to occasions with larger power. The inner wall of the first propeller 4 is provided with a first cambered surface 41 which is continuously contracted, the inner wall of the second propeller 5 is also provided with a second cambered surface 51 which is continuously contracted, and fluid can flow to the center of the conduit 1 under the guidance of the first cambered surface 41 and the second cambered surface 51, so that the resistance of the fluid can be effectively reduced. The first cambered surface 41 and the second cambered surface 51 are continuously contracted from front to back, so that the overall pressure of the first propeller 4 and the second propeller 5 is increased, and the rotating speed range of the first propeller 4 and the second propeller 5 which are normally used is increased, so that higher propelling power density is obtained. Compared with the propeller 7 of the traditional double-stage propeller, the scheme can increase hydrodynamic performance under the condition of not changing motor power, and solves the problem that the traditional pushing machine needs to consume larger power to obtain higher propulsion efficiency.
The diameter of the rear end of the first cambered surface 41 is larger than that of the front end of the second cambered surface 51, and the first cambered surface 41 and the second cambered surface 51 form a discontinuous streamline structure which continuously contracts from front to back.
The diameter of the first cambered surface 41 and the diameter of the second cambered surface 51 are limited, so that the diameter of the front end of the second cambered surface 51 is smaller than the diameter of the rear end of the first cambered surface 41, the first cambered surface 41 and the second cambered surface 51 form a broken streamline structure which continuously contracts from front to back, the integral streamline of the inner wall of the guide pipe 1 is improved, the resistance of the propeller 7 is reduced, the air vaporization phenomenon on the propeller blade can be effectively reduced, the propulsion efficiency is improved, the noise generation is reduced, the cavitation phenomenon is reduced, the structure of the propeller is protected, and the thrust output is improved.
The front end of the guide pipe 1 is provided with a front guide cover 2, the inner side of the front guide cover 2 is provided with a third cambered surface 21, the rear end of the third cambered surface 21 is connected with the first cambered surface 41, and the third cambered surface 21, the first cambered surface 41 and the second cambered surface 51 form a discontinuous streamline structure which continuously contracts from front to back.
In order to reduce the resistance of the propeller 7 better, a front guide cover 2 is arranged at the front end of the guide pipe 1, and a third cambered surface 21 is arranged on the inner side of the front guide cover 2. The third cambered surface 21 continuously contracts from front to back, and the rear end of the third cambered surface 21 is connected with the front end of the first cambered surface 41, so that the inlet of the front-arranged air guide sleeve 2 is large.
Wherein, the third cambered surface 21, the first cambered surface 41 and the second cambered surface 51 are all continuously contracted inwards, so that the third cambered surface 21, the first cambered surface 41 and the second cambered surface 51 can form a discontinuous streamline structure which is continuously contracted from front to back, the integral streamline of the inner wall of the conduit 1 is further improved, and the resistance of the propeller 7 is reduced.
The rear end of the guide pipe 1 is provided with a rear guide cover 3, the inner side of the rear guide cover 3 is provided with a fourth cambered surface 31, the front end of the fourth cambered surface 31 is connected with the second cambered surface 51, and the third cambered surface 21, the first cambered surface 41, the second cambered surface 51 and the fourth cambered surface 31 form a discontinuous streamline structure which continuously contracts from front to back.
It should be noted that the rear end of the duct 1 is also provided with a rear dome 3, and the fourth cambered surface 31 of the inner wall of the rear dome 3 is connected with the second cambered surface 51, so as to ensure that the outlet of the rear dome 3 is smaller than the inlet of the front dome 2. The front guide cover 2 with a large inlet and the rear guide cover 3 with a small outlet jointly act, so that a supercharging effect can be achieved on the inner wall of the guide pipe 1, and the propulsion efficiency of the propeller 7 is effectively improved.
In addition, the fourth cambered surface 31 is connected with the second cambered surface 51, and the first cambered surface 41 and the third cambered surface 21 are connected, so that two sections of streamline structures which continuously shrink from front to back are formed on the inner wall of the guide pipe 1, and fluid can flow towards the center of the propeller under the guidance of the streamline structures.
At this time, the streamline structure, the front guide cover 2 with a large inlet and the rear guide cover 3 with a small outlet are matched with each other, so that the pressurizing effect in the propeller 7 can be further improved, the resistance of the propeller 7 is obviously reduced, and the propelling efficiency of the propeller 7 is further improved.
The inner wall of the guide pipe 1 is provided with a fifth cambered surface 11, the front end of the fifth cambered surface 11 is connected with the first cambered surface 41, and the rear end of the fifth cambered surface 11 is connected with the second cambered surface 51; the third cambered surface 21, the first cambered surface 41, the fifth cambered surface 11, the second cambered surface 51 and the fourth cambered surface 31 form an uninterrupted streamline structure which continuously contracts from front to back.
The front section of the fifth cambered surface 11 is connected with the rear end of the first cambered surface 41, and the rear end of the fifth cambered surface 11 is connected with the front end of the second cambered surface 51, so that the third cambered surface 21, the first cambered surface 41, the fifth cambered surface 11, the second cambered surface 51 and the fourth cambered surface 31 can form a complete and uninterrupted streamline structure which continuously contracts from front to back, thereby forming a streamline inner wall on the inner wall of the guide pipe 1, reducing the flow resistance of fluid, and further improving the propelling efficiency of the propeller 7.
The outer side of the rear air guide sleeve 3 is provided with an arc surface 32, the arc surface 32 is continuously enlarged from outside to inside, and the arc surface 32 is connected with the rear end of the fourth arc surface 31.
The outer side of the rear-mounted air guide sleeve 3 is also provided with an arc surface 32, wherein the arc surface 32 is connected with a fourth arc surface 31, and the arc surface 32 is enlarged from outside to inside to the rear end, so that the appearance of the propeller 7 is also provided with a streamline structure, the resistance of the shell of the propeller 7 can be obviously reduced, and the corresponding total resistance is also greatly reduced. Therefore, the arc surface 32 is arranged on the rear-mounted air guide sleeve 3, so that the sailing performance and the propelling efficiency of the propeller 7 can be remarkably improved.
The front end of the third cambered surface 21 is connected with the outer wall of the catheter 1, and the third cambered surface 21 is parabolic and protrudes towards the front end.
The front end of the third cambered surface 21 is connected with the outer wall of the guide pipe 1, so that the smoothness of the shell of the propeller 7 can be improved, and the resistance of the shell of the propeller 7 can be reduced. In addition, the third cambered surface 21 is in a parabolic shape protruding forward, when the fluid flows through the third cambered surface 21, a part of the fluid can flow into the propeller 7 under the guidance of the third cambered surface 21, and another part of the fluid can flow to the outer side of the propeller 7, so that the shell resistance of the propeller 7 is further reduced.
A propeller comprises a conduit structure with a streamline inner wall. The propeller adopts the conduit structure with the streamline inner wall, so that the total resistance of the propeller 7 can be reduced, and the propulsion efficiency of the propeller 7 can be improved.
The structure of a conduit for the inner wall of a flow line and other constitution and operation of a propeller using the same according to an embodiment of the present utility model are well known to those skilled in the art, and will not be described in detail herein.
In the description herein, reference to the term "embodiment," "example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. The conduit structure of the streamline inner wall is characterized by comprising a conduit, a first propeller, a second propeller and a rotating shaft, wherein the first propeller and the second propeller are both rotatably arranged on the inner wall of the conduit, the length direction of the rotating shaft is the same as that of the conduit, the first propeller is fixedly sleeved at the front end of the rotating shaft, and the second propeller is fixedly sleeved at the rear end of the rotating shaft;
the inner wall of first screw is equipped with first cambered surface, the inner wall of second screw is equipped with the second cambered surface, first cambered surface and second cambered surface are by the continuous shrink of front and back.
2. The conduit structure of claim 1, wherein the rear end of the first cambered surface has a larger diameter than the front end of the second cambered surface, and the first cambered surface and the second cambered surface form a discontinuous flow line structure which continuously contracts from front to back.
3. The conduit structure of a streamline inner wall according to claim 1, wherein a front end of the conduit is provided with a front guide cover, a third cambered surface is arranged on the inner side of the front guide cover, the rear end of the third cambered surface is connected with the first cambered surface, and the third cambered surface, the first cambered surface and the second cambered surface form a discontinuous streamline structure which continuously contracts from front to back.
4. A conduit structure with a streamline inner wall according to claim 3, wherein the rear end of the conduit is provided with a rear dome, the inner side of the rear dome is provided with a fourth cambered surface, the front end of the fourth cambered surface is connected with the second cambered surface, and the third cambered surface, the first cambered surface, the second cambered surface and the fourth cambered surface form a discontinuous streamline structure which continuously contracts from front to back.
5. The conduit structure of a streamline inner wall according to claim 4, wherein a fifth cambered surface is arranged on the inner wall of the conduit, the front end of the fifth cambered surface is connected with the first cambered surface, and the rear end of the fifth cambered surface is connected with the second cambered surface; the third cambered surface, the first cambered surface, the fifth cambered surface, the second cambered surface and the fourth cambered surface form an uninterrupted streamline structure which continuously contracts from front to back.
6. The conduit structure according to claim 4, wherein the outer side of the rear dome is provided with an arc surface, the arc surface is continuously enlarged from outside to inside, and the arc surface is connected with the rear end of the fourth arc surface.
7. A conduit structure according to claim 3, wherein the front end of the third cambered surface is connected with the outer wall of the conduit, and the third cambered surface is parabolic and protrudes towards the front end.
8. A propeller comprising a streamlined inner wall conduit structure according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321486673.3U CN219927952U (en) | 2023-06-12 | 2023-06-12 | Conduit structure of streamline inner wall and propeller using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321486673.3U CN219927952U (en) | 2023-06-12 | 2023-06-12 | Conduit structure of streamline inner wall and propeller using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219927952U true CN219927952U (en) | 2023-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321486673.3U Active CN219927952U (en) | 2023-06-12 | 2023-06-12 | Conduit structure of streamline inner wall and propeller using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219927952U (en) |
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2023
- 2023-06-12 CN CN202321486673.3U patent/CN219927952U/en active Active
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