CN112160878B - Fan pond test blade and wheel hub connection structure - Google Patents
Fan pond test blade and wheel hub connection structure Download PDFInfo
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- CN112160878B CN112160878B CN202011048921.7A CN202011048921A CN112160878B CN 112160878 B CN112160878 B CN 112160878B CN 202011048921 A CN202011048921 A CN 202011048921A CN 112160878 B CN112160878 B CN 112160878B
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- blade
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Life Sciences & Earth Sciences (AREA)
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- Sustainable Energy (AREA)
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a fan pool test blade and hub connecting structure which comprises hub triangular forks, wherein blade root slots are arranged at the tops of all corner forks of each hub triangular fork in a matched mode, each blade root slot is of a thin-wall cuboid structure, a gear disc is arranged at the bottom of each blade root slot, a blade rotating shaft is arranged in the middle of the bottom of the gear disc, and a plurality of first fastening long holes are formed in the circumferential direction of the gear disc; an angle adjusting disc is arranged on the top surface of each angle fork of the hub triangular fork, a rotating hole is formed in the middle of each angle adjusting disc, a plurality of second fastening long holes are uniformly formed in the circumferential direction of each angle adjusting disc at intervals, and a plurality of positioning teeth are arranged on the inner wall surface of each angle adjusting disc at intervals; the blade rotating shaft is inserted into the rotating hole, and the gear disc is matched with the positioning teeth; the first fastening long hole and the second fastening long hole are connected through the bolt, the work is reliable, and the use and the operation are convenient.
Description
Technical Field
The invention relates to the technical field of ocean engineering hydrodynamic tests, in particular to a fan pool test blade and hub connecting structure, which is particularly applied to a fixed or floating wind power generation device pool test.
Background
In recent years, with the continuous development of new energy industry, floating wind power generation is becoming the focus of research at home and abroad. Coupling response analysis of various mechanical characteristics such as aerodynamic force, hydrodynamic force, structural power and the like is involved in design and development of the floating wind power generation, the theory and numerical technology are not mature, and a fully-coupled pool model test is the most effective and reliable way for system performance evaluation. However, due to the complexity of the floating wind power system, the pool model test has many difficulties and challenges, wherein the difficulty of the system design of the upper fan blade is the greatest:
1) the mass of a blade and a hub system in the model is extremely small under the influence of the scale ratio relation, and the mass of three blades (more than one meter) and the hub are generally within 500 g;
2) in the test, the blade has the requirement of variable pitch, the axial rotation angle of the blade needs to be continuously adjusted, the three-blade adjustment angle needs to be consistent in height, otherwise, the blade is easy to swing and vibrate due to eccentricity;
the design of the connecting structure of the fan pool test blade and the hub directly influences the smooth development of the test and the accuracy of test data;
as the floating wind power generation is a novel industry, all technologies are in an exploration and growth stage, related water tank tests are less developed, and a standard and reliable water tank test technology is lacked. Under the influence of the technical difficulties, the domestic pool simulation of the wind blades mostly adopts fixed pitch, and then the rotation of the blades is not considered, or the structural form is complex, so that the quality similarity is difficult to meet. Therefore, the blade and hub connecting structure which is simple and reliable in structure, light and easy to operate is established, and the method has important significance for improving the floating wind power pool model test efficiency and improving the test technology.
Disclosure of Invention
The applicant provides a fan pool test blade and hub connection structure aiming at the defects in the prior art, so that the fan pool test blade and hub connection structure is more efficient, accurate, simple, convenient and stable, and can meet the simulation requirements of floating and fixed wind power equipment pool test fans.
The technical scheme adopted by the invention is as follows:
a fan pool test blade and hub connecting structure comprises hub triangular forks, wherein blade root slots are arranged at the tops of the corner forks of the hub triangular forks in a matched mode;
the blade root slot is of a thin-wall cuboid structure, a gear disc is arranged at the bottom of the blade root slot, a blade rotating shaft is arranged in the middle of the bottom of the gear disc, and a plurality of first fastening long holes are formed in the circumferential direction of the gear disc;
an angle adjusting disc is arranged on the top surface of each angle fork of the hub triangular fork, a rotating hole is formed in the middle of each angle adjusting disc, a plurality of second fastening long holes are uniformly formed in the circumferential direction of each angle adjusting disc at intervals, and a plurality of positioning teeth are arranged on the inner wall surface of each angle adjusting disc at intervals;
the blade rotating shaft is inserted into the rotating hole, and the gear disc is matched with the positioning teeth;
the first fastening long hole and the second fastening long hole are connected through a bolt.
The further technical scheme is as follows:
gear teeth are arranged on the outer circular surface of the gear disc and matched with the positioning teeth.
The positioning teeth are in a sharp-angled structure.
And the root of the fan blade model is directly inserted into the blade root slot.
The middle part of the hub triangle fork is provided with a hub shaft.
The invention has the following beneficial effects:
the blade and blade root slot assembly is compact and reasonable in structure and convenient to operate, the blade and blade root slot are installed in a plug-in mode, and the angle between the blade root slot and the hub is adjusted and locked by the gear disc and the positioning teeth. All adopt aluminium or light aluminum alloy processing, whole device simple structure is light, flexible operation, location accuracy, easy installation and disassembly. The functional requirements of fan quality similarity simulation and pitch adjustment can be met simultaneously, the test efficiency is effectively improved, and the simulation precision is improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a front view of a root slot of the present invention.
Fig. 3 is a side view of fig. 2.
Fig. 4 is a top view of fig. 2.
FIG. 5 is a schematic structural view of the hub spider of the present invention.
FIG. 6 is a partial top view of the hub spider of the present invention.
Wherein: 1. a blade root slot; 2. a hub triangle fork; 3. an angle adjusting disk; 4. a gear plate; 5. a blade rotating shaft; 7. hole turning; 8. a hub shaft; 9. a second fastening long hole; 10. and positioning teeth.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 to 6, the connection structure of the fan pool test blade and the hub in the embodiment includes a hub triangular fork 2, and a blade root slot 1 is installed at the top of each corner fork of the hub triangular fork 2 in a matching manner;
the single blade root slot 1 is of a thin-wall cuboid structure, a gear disc 4 is arranged at the bottom of the blade root slot 1, a blade rotating shaft 5 is arranged in the middle of the bottom of the gear disc 4, and a plurality of first fastening long holes are formed in the circumferential direction of the gear disc 4;
an angle adjusting disc 3 is arranged on the top surface of each angle fork of the hub triangular fork 2, a rotating hole 7 is formed in the middle of each angle adjusting disc 3, a plurality of second fastening long holes 9 are uniformly formed in the circumferential direction of each angle adjusting disc 3 at intervals, and a plurality of positioning teeth 10 are arranged on the inner wall surface of each angle adjusting disc 3 at intervals;
the blade rotating shaft 5 is inserted into the rotating hole 7, and the gear disc 4 is matched with the positioning teeth 10;
the first fastening long hole and the second fastening long hole 9 are connected by a bolt.
Gear teeth are arranged on the outer circular surface of the gear disc 4 and matched with the positioning teeth 10.
The positioning teeth 10 are pointed.
The root of the fan blade model is directly inserted into the blade root slot 1.
The hub shaft 8 is arranged in the middle of the hub triangle fork 2.
The fan water tank test blade and hub connection structure is completely processed by aluminum or light aluminum alloy, and the whole structure consists of three blade root slots 1 and a hub triangular fork 2.
The root of the fan blade model is directly inserted into the blade root slot 1 for fixing and can be adopted. The blade root slot 1 is connected with the hub triangle fork 2 through the angle adjusting disc 3, and the blade root slot 1 and the angle adjusting disc 3 can rotate for 360 degrees and are locked.
The bottom of the blade root slot 1 is provided with a gear disc 4, the angle adjusting disc 3 of the hub triangle fork 2 is provided with four positioning teeth 10, the gear disc 4 is locked in an angle mode in four directions, namely, the upper direction, the lower direction, the left direction and the right direction, and the blade pitch angle can be adjusted by adjusting the relative angle between the gear disc 4 and the positioning teeth 10.
The gear disc 4 and the angle adjusting disc 3 are respectively provided with a fastening long hole, and after the pitch angle is determined, a bolt penetrates through the fastening long hole to be locked, so that the fan blade and the hub can be firmly connected. When the angle of the pitch angle is readjusted, the bolt is loosened to adjust the angle, and the pitch angle is locked again.
Referring to fig. 1 to 6, the whole connecting structure is divided into three blade root slots 1 and a hub triangular fork 2, the three blades are respectively and directly inserted into the blade root slots 1 through root connecting sections and fixed by glue or through screws; the blade root slot 1 is connected with the angle adjusting disc 3 on the hub triangle fork 2 respectively, the blade rotating shaft 5 is inserted into the rotating hole 7, the blade root slot 1 is rotated to determine the blade pitch angle, and the gear disc 4 and the positioning teeth 10 are meshed to realize angle locking. And four bolts are respectively inserted into the first fastening long hole and the second fastening long hole 9 to fixedly connect the blade root slot 1 with the hub triangular fork 2. And when the blade angle is adjusted, the four bolts are removed, the gear disc 4 is rotated again to determine the angle, the gear disc is meshed with the positioning teeth 10, and the four bolts are installed again to fixedly connect the blade root slot 1 with the hub triangle fork 2 again.
The specific working process of the invention is as follows:
the existing fan blade is inserted into the blade root slot 1 and fixedly connected, the rotation angle of the gear wheel disc 4 on the blade root slot 1 is adjusted, the gear wheel disc is occluded with the positioning teeth 10 to realize angle locking after the rotation angle is determined, the first fastening long hole and the second fastening long hole 9 are respectively inserted by bolts to fixedly connect the blade root slot 1 with the hub triangular fork 2, and the fan blade locking device is convenient to install and convenient to adjust.
The above description is intended to be illustrative and not restrictive, and the scope of the invention is defined by the appended claims, which may be modified in any manner within the scope of the invention.
Claims (1)
1. The utility model provides a fan pond test blade and wheel hub connection structure which characterized in that: the blade-mounted hub assembly comprises a hub triangular fork (2), wherein a blade root slot (1) is installed at the top of each corner fork of the hub triangular fork (2) in a matched mode, a single blade root slot (1) is of a thin-wall cuboid structure, a gear disc (4) is arranged at the bottom of each blade root slot (1), a blade rotating shaft (5) is arranged in the middle of the bottom of each gear disc (4), and a plurality of first fastening long holes are formed in the gear disc (4) in the circumferential direction;
an angle adjusting disc (3) is arranged on the top surface of each angle fork of the hub triangular fork (2), a rotating hole (7) is formed in the middle of each angle adjusting disc (3), a plurality of second fastening long holes (9) are uniformly arranged in the circumferential direction of each angle adjusting disc (3) at intervals, and a plurality of positioning teeth (10) are arranged on the inner wall surface of each angle adjusting disc (3) at intervals;
the blade rotating shaft (5) is inserted into the rotating hole (7), and the gear disc (4) is matched with the positioning teeth (10);
the first fastening long hole and the second fastening long hole (9) are connected through a bolt; gear teeth are arranged on the outer circular surface of the gear disc (4) and matched with the positioning teeth (10); the positioning teeth (10) are in a sharp-angled structure; the root of the fan blade model is directly inserted into the blade root slot (1); the middle part of the hub triangle fork (2) is provided with a hub shaft (8);
the working process is as follows:
the existing fan blade is inserted into the blade root slot (1) and fixedly connected, the rotation angle of the gear wheel disc (4) on the blade root slot (1) is adjusted, the gear wheel disc and the positioning teeth (10) are meshed to realize angle locking after the rotation angle is determined, and bolts are respectively inserted into the first fastening long hole and the second fastening long hole (9) to fixedly connect the blade root slot (1) and the hub triangle fork (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011048921.7A CN112160878B (en) | 2020-09-29 | 2020-09-29 | Fan pond test blade and wheel hub connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011048921.7A CN112160878B (en) | 2020-09-29 | 2020-09-29 | Fan pond test blade and wheel hub connection structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112160878A CN112160878A (en) | 2021-01-01 |
| CN112160878B true CN112160878B (en) | 2021-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011048921.7A Active CN112160878B (en) | 2020-09-29 | 2020-09-29 | Fan pond test blade and wheel hub connection structure |
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| CN (1) | CN112160878B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206466162U (en) * | 2016-12-20 | 2017-09-05 | 天津欧坤运动器材科技有限公司 | A kind of blade fixed seat |
| CN110005582A (en) * | 2019-05-16 | 2019-07-12 | 上海交通大学 | A kind of unsteady aerodynamic characteristics tests research system and method for offshore floating type blower |
| CN110030165A (en) * | 2019-05-16 | 2019-07-19 | 上海交通大学 | A kind of floating blower scale model rotating vane aerodynamic loading monitoring device and method |
| CN110287573B (en) * | 2019-06-19 | 2023-01-10 | 上海交通大学 | Model blade design method suitable for floating fan scaling model pool test |
| CN210135033U (en) * | 2019-07-15 | 2020-03-10 | 湖南科技大学 | Horizontal shaft wind turbine device for wind tunnel test |
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2020
- 2020-09-29 CN CN202011048921.7A patent/CN112160878B/en active Active
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