阅读说明：本技术 一种垂直轴风力发电机增功降噪装置 (Power increasing and noise reducing device of vertical axis wind driven generator ) 是由 唐新姿 王效禹 袁可人 于 2020-07-29 设计创作，主要内容包括：本发明公开了一种垂直轴风力发电机增功降噪装置,属于风力发电领域。一种垂直轴风力发电机增功降噪装置由上顶座、下底座、集风板和多孔导流板组成；所述多孔导流板上设置有多个均匀分布的圆形小孔；所述圆形小孔的排列方式可以是矩形、圆形和三角形。本发明通过所述多孔导流板改变自然来流风的方向,设置多个圆形小孔有效降低流场湍流强度,从而提升垂直轴风力发电机功率,降低风力机流场噪音；多孔导流板位于泄风限位位置时实现弃风泄风,提高垂直轴风力发电机抗风能力和安全性；多孔导流板设置多个限位位置,适合不同工况不同类型的垂直轴风力发电机,有利于实现批量生产,降低单台成本。(The invention discloses a power increasing and noise reducing device of a vertical axis wind driven generator, and belongs to the field of wind power generation. A vertical axis wind turbine power increasing and noise reducing device is composed of an upper top seat, a lower base, a wind collecting plate and a porous guide plate; a plurality of uniformly distributed round small holes are formed in the porous guide plate; the arrangement of the circular holes may be rectangular, circular and triangular. The direction of natural incoming wind is changed through the porous guide plate, and the plurality of round small holes are arranged to effectively reduce the turbulence intensity of the flow field, so that the power of the vertical axis wind turbine is improved, and the noise of the flow field of the wind turbine is reduced; when the porous guide plate is positioned at the wind-discharging limiting position, wind-abandoning and wind-discharging are realized, and the wind resistance and the safety of the vertical axis wind driven generator are improved; the porous guide plate is provided with a plurality of limiting positions, is suitable for vertical axis wind driven generators with different working conditions and different types, is favorable for realizing batch production, and reduces the cost of a single machine.)

1. A vertical axis aerogenerator increases merit and falls device of making an uproar which characterized in that: consists of an upper top seat, a lower base, an air collecting plate and a porous guide plate; the upper top seat, the lower base and the wind collecting plate are of an integral structure formed by welding thin plates; the number of the wind collecting plates and the number of the porous guide plates are consistent and the wind collecting plates and the porous guide plates are uniformly distributed in the circumferential direction; the upper top seat and the lower base are of open hollow round platform structures, and the upper top seat and the lower base respectively comprise an upper conical plate, a lower conical plate, an upper annular flat plate and a lower annular flat plate which are consistent in size and shape; the wind collecting plates are fixedly arranged along the radial directions of the upper conical plate and the lower conical plate; the porous guide plate and the wind collecting plate are connected end to end through hinges; the porous guide plate rotates around the axis of the hinge; a plurality of groups of limiting holes are formed in the lower annular flat plate; the number of the limiting hole groups is consistent with that of the porous guide plates; a plurality of uniformly distributed round small holes are formed in the porous guide plate; the arrangement mode of the circular small holes can be rectangular, circular and triangular; the bottom of the porous guide plate is provided with a limiting pin; and the limiting pin is matched with the limiting hole on the lower circular flat plate to realize positioning and fixing.

2. The power increasing and noise reducing device of the vertical axis wind turbine according to claim 1, wherein: each group of limiting holes of the multiple groups of limiting holes comprises a plurality of limiting holes and are uniformly distributed in a fan shape by taking the shaft center as the center of a circle; after the limiting holes in the plurality of limiting holes and the limiting pins are positioned and fixed, the limiting holes which enable the guide plate to be radially overlapped with the lower annular flat plate are called zero-degree limiting holes; the limiting hole which is positioned and fixed with the limiting pin and enables the guide plate to be tangent with the inner circle of the lower annular flat plate is called as a wind-discharging limiting hole; the wind-leakage limiting hole comprises a right wind-leakage limiting hole and a left wind-leakage limiting hole.

Technical Field

The invention belongs to the technical field of wind power generation, and particularly relates to a power increasing and noise reducing device of a vertical axis wind driven generator.

Background

The vertical axis wind turbine generator is widely applied because a yaw system is not needed, the structure is simple, and the like, wherein the H-shaped vertical axis wind turbine is a typical lifting force type vertical axis wind turbine generator. The wind driven generator has the advantages that the overall efficiency of the wind wheel is not high due to the fact that the attack angle of the blade airfoil is constantly changed during operation, and the wind wheel is difficult to self-start during low wind. In order to solve the problems of low wind energy utilization efficiency, difficult self-starting and the like of the H-shaped vertical axis wind turbine, the wind energy collecting and shielding device comprises a variable pitch technology, an energy collecting and wind collecting technology and the like. The variable pitch technology adjusts the airfoil angle of attack of the blade in a mechanical or electric control mode to enable the airfoil angle of attack to work in a proper range, and the technology is complex and high in cost, so that most of the existing H-shaped vertical axis wind turbines are of a fixed blade lift type. The performance of the wind driven generator is improved to a certain extent by the technologies of energy-gathering shielding, wind gathering and the like, but the technology is substantially equivalent to that a baffle is arranged in front of the incoming flow of the blade, a flow field is greatly subjected to interference, turbulence and vortex are intensified, the rotating wind turbine blade and the static wind gathering cover enable fluid to be subjected to impact coupling excitation, and the noise pollution of the whole machine during operation is more serious; meanwhile, due to the fact that the structure is fixed and lacks flexibility, the problems that the performance is low under non-designed working conditions, and the wind driven generator and the wind collecting cover are subjected to huge wind load in strong wind exist, and the like, and the cost is higher for the safety of the structure; in addition, the wind turbine can play a role only by designing and customizing according to specific model parameters of the H-shaped vertical axis wind turbine, the cost of a single wind turbine is high, and the practical application of the technology is limited.

Disclosure of Invention

In order to solve the problems, the invention provides a power increasing and noise reducing device for a vertical axis wind driven generator, which can effectively reduce noise, improve the comprehensive performance of an H-shaped vertical axis wind driven generator under variable working conditions, improve the wind resistance and the safety, can adapt to various types of H-shaped vertical axis wind driven generators, is favorable for realizing batch production and reduces the cost of a single machine.

The technical scheme adopted by the invention is as follows:

the invention discloses a power increasing and noise reducing device of a vertical axis wind driven generator, which is characterized in that: a vertical axis aerogenerator increases merit and falls device of making an uproar which characterized in that: consists of an upper top seat, a lower base, an air collecting plate and a porous guide plate; the upper top seat, the lower base and the wind collecting plate are of an integral structure formed by welding thin plates; the number of the wind collecting plates and the number of the porous guide plates are consistent and the wind collecting plates and the porous guide plates are uniformly distributed in the circumferential direction; the upper top seat and the lower base are of open hollow round platform structures, and the upper top seat and the lower base respectively comprise an upper conical plate, a lower conical plate, an upper annular flat plate and a lower annular flat plate which are consistent in size and shape; the wind collecting plates are fixedly arranged along the radial directions of the upper conical plate and the lower conical plate; the porous guide plate and the wind collecting plate are connected end to end through hinges; the porous guide plate rotates around the axis of the hinge; a plurality of groups of limiting holes are formed in the lower annular flat plate; the number of the limiting hole groups is consistent with that of the porous guide plates; a plurality of uniformly distributed round small holes are formed in the porous guide plate; the arrangement mode of the circular small holes can be rectangular, circular and triangular; the bottom of the porous guide plate is provided with a limiting pin; and the limiting pin is matched with the limiting hole on the lower circular flat plate to realize positioning and fixing.

Furthermore, each group of limiting holes of the multiple groups of limiting holes comprises a plurality of limiting holes and are uniformly distributed in a fan shape by taking the shaft center as the center of a circle; after the limiting holes in the plurality of limiting holes and the limiting pins are positioned and fixed, the limiting holes which enable the guide plate to be radially overlapped with the lower annular flat plate are called zero-degree limiting holes; the limiting hole which is positioned and fixed with the limiting pin and enables the guide plate to be tangent with the inner circle of the lower annular flat plate is called as a wind-discharging limiting hole; the wind-leakage limiting hole comprises a right wind-leakage limiting hole and a left wind-leakage limiting hole.

Compared with the prior art, the invention has the beneficial effects that:

1. the porous guide plate is provided with a plurality of uniformly distributed round small holes, so that the turbulence intensity of incoming wind can be reduced, and the noise of a flow field is effectively reduced.

2. The porous guide plate rotates around the axis of the hinge, can rotate freely to realize angle adjustment, can adjust the wind direction of the H-shaped vertical axis wind turbines with fixed blades under different working conditions, different wing profiles and different installation angles by changing the angle of the porous guide plate, is suitable for various H-shaped vertical axis wind turbines, is favorable for realizing batch production, and reduces the cost of a single wind turbine.

3. The wind wheel of the H-shaped vertical axis wind turbine is bypassed by most of airflow to realize wind abandoning and wind discharging when the limiting pin of the multi-hole guide plate is matched and fixed with the left side limiting hole of the left deflection wind discharging limiting hole or the right side limiting hole of the right deflection wind discharging limiting hole, so that the wind resistance and the safety of the vertical axis wind turbine under the strong wind working condition are improved.

Drawings

Fig. 1 is a schematic front view of a power increasing and noise reducing device of a vertical axis wind turbine.

FIG. 2 is a schematic axial view of a power increasing and noise reducing device of a vertical axis wind turbine.

FIG. 3 is a schematic diagram of a partial enlarged position limiting hole of a power increasing and noise reducing device of a vertical axis wind turbine.

Fig. 4 is a partially enlarged schematic view of a porous flow guide plate structure of a power increasing and noise reducing device of a vertical axis wind turbine.

The reference numbers in the figures illustrate: the wind-proof structure comprises an upper top seat 1, an upper conical plate 11, an upper annular flat plate 12, a wind collecting plate 2, hinges 3, an axis 31, a porous guide plate 4, a circular small hole 41, a limiting pin 5, a lower base 6, a lower conical plate 61, a lower annular flat plate 62, an outer circle 63, an inner circle 64, a limiting hole 7, a right-side wind-discharging limiting hole 71, a zero-degree limiting hole 72 and a left-side wind-discharging limiting hole 73.

Detailed Description

The invention will be further described with reference to the following drawings:

as shown in fig. 1, fig. 2 and fig. 3, the power increasing and noise reducing device of a vertical axis wind turbine of the present invention is characterized in that: the device consists of an upper top seat 1, a lower bottom seat 6, a wind collecting plate 2 and a porous guide plate 4; the upper top seat 1, the lower bottom seat 6 and the wind collecting plate 2 are of an integral structure formed by welding thin plates; the number of the wind collecting plates 2 is consistent with that of the porous guide plates 4, and the wind collecting plates and the porous guide plates are uniformly distributed in the circumferential direction; the upper top seat 1 and the lower bottom seat 6 are in open hollow round platform structures, and the upper top seat 1 and the lower bottom seat 6 respectively comprise an upper conical plate 11, a lower conical plate 61, an upper annular flat plate 12 and a lower annular flat plate 62 which are consistent in size and shape; the wind collecting plate 2 is fixedly installed along the radial direction of the upper conical plate 11 and the lower conical plate 61; the porous guide plate 4 is connected with the wind collecting plate 2 end to end through hinges 3; the porous guide plate 4 rotates around the axle center 31 of the hinge 3; a plurality of groups of limiting holes 7 are formed in the lower annular flat plate 62 of the lower base 6; the number of the groups of the limiting holes 7 is consistent with that of the porous guide plates 4; a plurality of uniformly distributed round small holes 41 are arranged on the porous guide plate 4; the arrangement mode of the round small holes 41 can be rectangle, circle and triangle; the bottom of the porous guide plate 4 is provided with a limit pin 5; the limiting pin 5 is matched with the limiting hole 7 on the lower annular flat plate 62 to realize positioning and fixing.

As shown in fig. 4, each of the plurality of sets of limiting holes 7 of the present invention comprises a plurality of limiting holes and is uniformly distributed in a fan shape with the shaft center 31 as a center; after the limiting pin 5 and one of the limiting holes 7 are positioned and fixed, the limiting hole which radially overlaps the guide plate 4 and the lower annular flat plate 62 is called a zero-degree limiting hole 72; the limiting hole which is positioned and fixed with the limiting pin 5 in the plurality of limiting holes 7 and enables the guide plate 4 to be tangent to the inner circle 64 of the lower circular flat plate 62 is called as a wind-discharging limiting hole; the wind-leakage limiting hole comprises a right wind-leakage limiting hole 71 and a left wind-leakage limiting hole 73.

The specific working process of the device is as follows:

when wind passes through the porous guide plate 4, part of the airflow flows through the round small holes 41 of the porous guide plate, so that the flow field is more uniform and stable, the vortex formed by the airflow is reduced, the turbulence intensity is reduced, and the noise of the flow field is reduced.

When the natural wind speed is lower than the starting wind speed, the porous guide plate 4 is rotated, so that the limiting pin 5 of the porous guide plate 4 is matched and fixed with the limiting hole between the left deflection wind-leakage limiting hole 73 and the right deflection wind-leakage limiting hole 71, the mounting angle of the porous guide plate 4 is changed to obtain incoming wind in different directions, and the change of the airfoil attack angle of the wind turbine is realized to increase the starting torque.

When the natural wind speed is lower than the rated wind speed, the porous guide plate 4 is rotated, the limiting pin 5 of the porous guide plate 4 is matched and fixed with the limiting hole between the left deflection wind-leakage limiting hole 73 and the right deflection wind-leakage limiting hole 71, so that the installation angle of the porous guide plate 4 is changed to obtain incoming wind in different directions, the airfoil type attack angle of the wind machine is changed, the attack angle of the wind machine is always in the optimal range under different wind speeds, and the variable working condition wind energy utilization coefficient of the wind machine is improved.

When the incoming wind speed is higher than the safe wind speed, the multi-hole guide plate 4 is rotated, so that the limiting pin 5 of the multi-hole guide plate 4 is matched and fixed with the left side limiting hole 73 of the left deflection wind leakage limiting hole 73 or the left side limiting hole of the left deflection wind leakage limiting hole 73 or the right side limiting hole 71 of the right deflection wind leakage limiting hole 71, most of the airflow bypasses the wind wheel of the wind machine to achieve wind abandon, and the wind resistance and the safety of the generator are improved.

When the wing profiles of the H-shaped vertical axis wind turbine are different or the blade installation angles are different, the multi-hole guide plate 4 is rotated, so that clockwise rotating air flows in different directions are obtained when the limiting pin 5 of the multi-hole guide plate 4 is matched and fixed with different limiting holes between the zero-degree limiting hole 72 and the left deflection wind limiting hole 73; the limiting pin 5 of the porous guide plate 4 is matched and fixed with different limiting holes between the zero degree limiting hole 72 and the right deflection wind limiting hole 71 to obtain anticlockwise rotating air flows in different directions; the device can adapt to H-shaped vertical axis wind turbines with different airfoil profiles and blade installation angles.

The embodiments described in this specification are merely illustrative of implementations of the inventive concept and the scope of the present invention should not be considered limited to the specific forms set forth in the embodiments but rather by the equivalents thereof as may occur to those skilled in the art upon consideration of the present inventive concept.