阅读说明：本技术 一种多层交错式φ型风力机 (A kind of multi-layer intercrossed formula φ type wind energy conversion system ) 是由 柯世堂 杜琳 王晓海 孙捷 朱容宽 董依帆 王振逸 王飞天 吴鸿鑫 王硕 韩光 于 2019-09-29 设计创作，主要内容包括：本发明公开了一种多层交错式φ型风力机叶片结构,其中：包括风力机轴以及若干层横截面为机翼状的弯叶片组,这若干层弯叶片组以内外分层的方式固定在风力机轴上,每层弯叶片组均包括若干个弯叶片,弯叶片均为上端和下端均与风力机轴固定、中部向外弯折的φ型风机叶片,内层的弯叶片与外层的弯叶片错开一定角度地沿环向布设于风力机轴一周。本发明能够有效提高风捕捉能力,从而改善自启动性能,各层风力机叶片结构固定在风力机轴的位置也对称分布,可以增强结构的整体性,提升风力机轴的屈曲稳定性,提高风能的利用率,且弯叶片通过螺栓套筒与风力机轴固定,使内层风力机叶片的安装、拆除简便,便于维修。(The invention discloses a kind of multi-layer intercrossed formula φ type wind turbine blade structures, wherein: being winglike bent blades group including wind turbine shaft and several layers cross section, this several layers bent blades group is fixed on wind turbine shaft in a manner of inside and outside layering, every layer of bent blades group includes several bent blades, bent blades be top and bottom fixed with wind turbine shaft, the φ type fan blade of middle part outward bending, the bent blades of internal layer and the bent blades of outer layer are staggered and are angularly circumferentially laid in wind turbine shaft one week.The present invention can effectively improve wind capturing ability, so as to improve self-starting performance, the position that each layer wind turbine blade structure is fixed on wind turbine shaft is also symmetrical, the globality of structure can be enhanced, the buckling stability for promoting wind turbine shaft, improves the utilization rate of wind energy, and bent blades are fixed by bolt collar and wind turbine shaft, make the installation of internal layer pneumatic equipment bladess, remove simplicity, it is easy to repair.)

1. a kind of multi-layer intercrossed formula φ type wind turbine blade structure, it is characterized in that: including that wind turbine shaft (1) and several layers are transversal Face is winglike bent blades group, this several layers bent blades group is fixed on wind turbine shaft (1) in a manner of inside and outside layering, every layer Bent blades group includes several bent blades (2), and the bent blades (2) are that top and bottom are solid with wind turbine shaft (1) Fixed, middle part outward bending φ type fan blade, the bent blades of internal layer and the bent blades of outer layer are staggered angularly circumferentially It is laid in wind turbine shaft one week.

2. a kind of multi-layer intercrossed formula φ type wind turbine blade structure according to claim 1, it is characterized in that: the curved leaf of each layer The bent blades (2) of piece group all interlock with the bent blades (2) close to one layer of bent blades group on the outside of it identical angle, remember the angle For α, then the number of plies n of the bent blades group is maximum are as follows: n=[120/ α], wherein n is natural number.

3. a kind of multi-layer intercrossed formula φ type wind turbine blade structure according to claim 2, it is characterized in that: the curved leaf of internal layer Piece (2) is identical with the cross sectional dimensions of bent blades (2) of outer layer.

4. a kind of multi-layer intercrossed formula φ type wind turbine blade structure according to claim 2, it is characterized in that: the curved leaf of outer layer The radius of turn of piece (2) with close to the ratio between radius of turn of bent blades (2) on the inside of it be 3:2.

5. a kind of multi-layer intercrossed formula φ type wind turbine blade structure according to claim 2, it is characterized in that: each layer bent blades The central axis of bent blades (2) horizontal direction of group is respectively positioned on same level.

6. a kind of multi-layer intercrossed formula φ type wind turbine blade structure according to claim 2, it is characterized in that: adjacent bent blades Bent blades (2) stagger angle of group is 15 ° or 20 °.

7. a kind of multi-layer intercrossed formula φ type wind turbine blade structure according to claim 2, it is characterized in that: bent blades (2) Both ends are fixedly installed with bolt collar (3), and the bolt hole passed through for bolt (4), spiral shell are offered on the bolt collar (3) Bent blades (2) are fixed on wind energy conversion system also cross the fixation hole reserved on bolt collar (3) and wind turbine shaft (1) by bolt (4) On axis (1).

8. a kind of multi-layer intercrossed formula φ type wind turbine blade structure according to claim 7, it is characterized in that: every layer of bent blades Group includes three bent blades (2), and the radians such as these three bent blades (2) are laid in wind turbine shaft (1) one week；Correspondingly, curved leaf The top and bottom of piece (2) are welded with the bolt collar of arc-shaped flaky (3), the bolt collars (3) of three arc-shaped flakies close to It is enclosed in wind turbine shaft (1) one week.

9. a kind of multi-layer intercrossed formula φ type wind turbine blade structure according to claim 8, it is characterized in that: the wind-force Arbor (1) lower end is fixed on windmill tower frame (5), and can be rotated relative to windmill tower frame (5).

Technical field

The invention belongs to the wind energy conversion system bent blades of vertical axis aerogenerator field more particularly to different radiuses of rotation according to Certain regularly arranged lift vertical shaft wind energy conversion system is specifically related to a kind of multi-layer intercrossed formula φ type wind energy conversion system.

Background technique

With the increasingly intensification of energy supply problem, wind energy is as a kind of ideal renewable and clean energy resource by people's Extensive concern.Wind-driven generator used at present mainly includes horizontal axis wind-driven generator and vertical axis aerogenerator.With Horizontal axis wind-driven generator is compared, and vertical axis aerogenerator has that safety is good, low noise, easy to install low with maintenance cost etc. Advantage possesses vast application prospect in terms of the energy conservation and environmental protection construction of city.

Traditional φ type lift wind energy conversion system, can there is a preferable wind energy capturing ability under suitable wind speed, but compared with Just more difficult starting under low wind speed, and under the wind direction of certain situations, which is also not easy to start.This will affect curved blade profile The popularization and use of vertical axis windmill.

Summary of the invention

The technical problem to be solved by the present invention is to solve the above shortcomings of the prior art and to provide a kind of improvement self-startings It can and adapt to a kind of multi-layer intercrossed formula φ type wind energy conversion system of more wind directions.

To realize the above-mentioned technical purpose, the technical scheme adopted by the invention is as follows:

A kind of multi-layer intercrossed formula φ type wind turbine blade structure, in which: including wind turbine shaft and several layers cross section be wing The bent blades group of shape, this several layers bent blades group are fixed on wind turbine shaft in a manner of inside and outside layering, and every layer of bent blades group is equal Including several bent blades, bent blades be top and bottom fixed with wind turbine shaft, the φ type blower of middle part outward bending Blade, the bent blades of internal layer and the bent blades of outer layer, which are staggered, to be angularly circumferentially laid in wind turbine shaft one week.

To optimize above-mentioned technical proposal, the concrete measure taken further include:

The bent blades of each layer of above-mentioned bent blades group are all staggeredly identical as the bent blades close to one layer of bent blades group on the outside of it Angle, remember that the angle is α, then the number of plies n of bent blades group is maximum are as follows: n=[120/ α], wherein n is natural number.

The cross sectional dimensions of the bent blades of the bent blades and outer layer of above-mentioned internal layer is identical.

The radius of turn of the bent blades of above-mentioned outer layer with close to the ratio between radius of turn of bent blades on the inside of it be 3:2.

The central axis of the bent blades horizontal direction of above-mentioned each layer bent blades group is respectively positioned on same level.

The bent blades stagger angle of above-mentioned adjacent bent blades group is 15 ° or 20 °.

Above-mentioned bent blades both ends are fixedly installed with bolt collar, and the bolt passed through for bolt is offered on bolt collar Bent blades are fixed on wind turbine shaft by hole, bolt also cross the fixation hole reserved on bolt collar and wind turbine shaft.

Every layer of above-mentioned bent blades group includes three bent blades, and the radians such as these three bent blades are laid in wind turbine shaft one Week；Correspondingly, the top and bottom of bent blades are welded with the bolt collar of arc-shaped flaky, the bolt collar of three arc-shaped flakies Close to hooping in wind turbine shaft one week.

Above-mentioned wind turbine shaft lower end is fixed on windmill tower frame, and can be rotated relative to windmill tower frame.

A kind of multi-layer intercrossed formula φ type wind turbine blade structure of the invention, the airfoil type bent blades group provided with multilayer, Each layer of airfoil type bent blades all interlock identical angle with close to the deck type bent blades on the outside of it, the stagger angle 15 ° or 20 ° can be chosen.In the case where stagger angle is constant, by the situation of change to specific torque coefficient, determination can be folded The maximum number of plies added.The wind turbine blade structure of this more superposition numbers of plies, can effectively improve wind capturing ability, so as to improve certainly Starting performance, the position that each layer wind turbine blade structure is fixed on wind turbine shaft is also symmetrical, and the entirety of structure can be enhanced Property, the buckling stability of wind turbine shaft is promoted, the utilization rate of wind energy is improved, and bent blades are solid by bolt collar and wind turbine shaft It is fixed, make the installation of internal layer pneumatic equipment bladess, remove simplicity, it is easy to repair.

Detailed description of the invention

Fig. 1 is the overall structure diagram of the double-layer staggered formula φ type wind energy conversion system of the present invention, and stagger angle is 20 °；

Fig. 2 is the top view of the double-layer staggered formula φ type wind energy conversion system of the present invention, and stagger angle is 20 °；

Fig. 3 is the overall structure diagram of three layers of alternating expression φ type wind energy conversion system of the invention, and stagger angle is 20 °；

Fig. 4 is the top view of three layers of alternating expression φ type wind energy conversion system of the invention, and stagger angle is 20 °；

Fig. 5 is the fixed partial structural diagram of bolt.

Appended drawing reference are as follows: wind turbine shaft 1, bent blades 2, bolt collar 3, bolt 4, windmill tower frame 5.

Specific embodiment

The embodiment of the present invention is described in further detail below in conjunction with attached drawing.

A kind of multi-layer intercrossed formula φ type wind turbine blade structure of the present embodiment, in which: including wind turbine shaft 1 and several Layer cross section is winglike bent blades group, this several layers bent blades group is fixed on wind turbine shaft 1 in a manner of inside and outside layering, Every layer of bent blades group includes several bent blades 2, bent blades 2 be top and bottom with wind turbine shaft 1 fixed, middle part to The φ type fan blade of outer bending, the bent blades of internal layer and the bent blades of outer layer are staggered and are angularly circumferentially laid in wind-force Arbor one week.