CN-122014495-A - Composite vertical axis wind turbine with automatically adjustable lift-drag blades and system

CN122014495ACN 122014495 ACN122014495 ACN 122014495ACN-122014495-A

Abstract

The embodiment of the disclosure provides a compound vertical axis wind turbine with automatically adjustable lift resistance blades, which comprises a power generation device and an impeller assembly in transmission connection with the power generation device, wherein the impeller assembly comprises a resistance wheel assembly and a lift wheel assembly which are coaxially arranged, the resistance wheel assembly comprises at least one rotatable resistance blade, the lift wheel assembly comprises at least one lift blade capable of sliding radially, the impeller assembly further comprises a linkage rod for connecting the resistance blade and the lift blade, and the lift blade is configured to drive the linkage rod under the action of centrifugal force generated by rotation so as to drive the resistance blade to rotate from a unfolded starting position to a retracted working position.

Inventors

CHEN BAOKANG
DUAN ZUHUA
CHEN QIRUI
WEI ZHENZU
LIANG HAO
GUO WENKANG
WANG JIAWEI
SONG YUBAO
MEI ZHENFENG
ZHOU WENKANG
ZHU JINYONG
YAO XIAOLIN
ZHANG LIJUN
JING ZHENGJUN
SHANG ZHENGLAN

Assignees

西安热工研究院有限公司
苏州西热节能环保技术有限公司

Dates

Publication Date: 20260512
Application Date: 20260227

Claims (10)

1. The composite vertical axis wind turbine with automatically adjustable lift resistance blades is characterized by comprising a power generation device and an impeller assembly in transmission connection with the power generation device; the impeller assembly comprises a resistance wheel assembly and a lift wheel assembly which are coaxially arranged, the resistance wheel assembly comprises at least one rotatable resistance blade, the lift wheel assembly comprises at least one lift blade capable of sliding radially, and the impeller assembly further comprises a linkage rod for connecting the resistance blade and the lift blade; wherein the lift blades are configured to drive the linkage rod under centrifugal force generated by rotation to drive the resistance blades to rotate from a deployed starting position to a retracted working position.
2. The automatically adjustable lift vane compound type vertical axis wind turbine of claim 1, wherein said lift wheel assembly comprises a center flange, a spring barrel disposed on said center flange, an elastic member preloaded in said spring barrel, and a spring lever slidably disposed in said spring barrel and connected to said lift vane.
3. The automatically adjustable lift-drag vane compound vertical axis wind turbine of claim 2, wherein the resilient member comprises a spring, wherein the spring is configured to provide a preload force to the spring rod that causes radial contraction thereof.
4. The automatically adjustable lift-drag blade compound vertical axis wind turbine of claim 2, wherein the lift wheel assembly further comprises a threaded sleeve in threaded connection with the spring rod, and a T-block in threaded connection with the threaded sleeve and the lift blade, respectively; One end of the linkage rod is hinged with the resistance blade, and the other end of the linkage rod is hinged with the threaded sleeve.
5. The automatically adjustable lift-drag blade compound vertical axis wind turbine of claim 1, wherein the lift wheel assembly further comprises lift baffles disposed at opposite ends of the lift blades.
6. The composite vertical axis wind turbine with automatically adjustable lift resistance blades according to claim 1, wherein the resistance wheel assembly comprises mounting plates which are relatively parallel and are arranged at intervals, and a plurality of support rods which are uniformly distributed between the two mounting plates, wherein the resistance blades are rotatably arranged on the support rods.
7. The automatically adjustable lift-drag blade compound vertical axis wind turbine of claim 6, wherein the drag wheel assembly further comprises a limit stop disposed on the drag blade and adapted to abut the mounting plate, wherein the linkage rod is hinged to the drag blade via the limit stop.
8. The automatically adjustable lift-drag blade compound vertical axis wind turbine of claim 1, wherein the drag wheel assembly further comprises drag baffles disposed at opposite ends of the drag blade.
9. The automatically adjustable lift-drag-blade composite vertical-axis wind turbine of claim 1, wherein the drag wheel assembly comprises three drag blades circumferentially spaced apart, the lift wheel assembly comprises three lift blades circumferentially spaced apart, and the impeller assembly comprises three linkage rods, wherein the three drag blades and the three lift blades are circumferentially staggered.
10. A wind power generation system, characterized in that the system comprises a composite vertical axis wind turbine with automatically adjustable lift-drag blades according to any one of claims 1-9.

Description

Composite vertical axis wind turbine with automatically adjustable lift-drag blades and system Technical Field The embodiment of the disclosure belongs to the technical field of wind power generation equipment, and particularly relates to a compound vertical axis wind turbine with automatically adjustable lift resistance blades and a system thereof. Background Existing drag type vertical axis fans (e.g., savonius fans) are typically high in starting torque, low in efficiency, and lift type vertical axis fans (e.g., darrieus fans) are typically high in efficiency but poor in self-starting capability. The lift-drag composite vertical axis wind driven generator is designed by combining the principles of lift-drag type blades and drag-drag type blades on the same fan, improves starting performance through the drag-drag type blades, and obtains higher power generation efficiency through the lift-drag type blades. The lift-drag composite vertical axis wind turbine solves the problem of difficult starting of a pure lift type fan through ingenious combination. The resistance blade in the lift-drag composite vertical axis wind turbine can generate certain starting torque under any wind direction and low wind speed, solves the problem of difficult starting of a pure lift type wind turbine at low wind speed, but also has the fatal defects that the upper limit of wind energy utilization efficiency of the resistance type component per se is low (the Cp value of the Betz limit is far lower than that of the lift type wind turbine), the airflow speed after passing through the wind turbine can be obviously reduced, turbulent flow with disordered directions is generated, the pneumatic performance of the rear lift type wind turbine is seriously disturbed, and the overall efficiency is generally lower than that of the pure lift type vertical axis wind turbine. Namely, because of the rotation of the resistance wheel, turbulence can be generated on a flow field of the fan, so that the wind energy utilization rate of the vertical axis fan is low, and finally the power generation efficiency is reduced. Therefore, how to solve the above technical problems is a technical problem to be solved by those skilled in the art. Disclosure of Invention The embodiment of the disclosure aims at least solving one of the technical problems in the prior art and provides a compound vertical axis wind turbine with automatically adjustable lift-drag blades and a system thereof. In a first aspect of embodiments of the present disclosure, there is provided a composite vertical axis wind turbine with automatically adjustable lift-drag blades, comprising: the power generation device and the impeller assembly are in transmission connection with the power generation device; the impeller assembly comprises a resistance wheel assembly and a lift wheel assembly which are coaxially arranged, the resistance wheel assembly comprises at least one rotatable resistance blade, the lift wheel assembly comprises at least one lift blade capable of sliding radially, and the impeller assembly further comprises a linkage rod for connecting the resistance blade and the lift blade; wherein the lift blades are configured to drive the linkage rod under centrifugal force generated by rotation to drive the resistance blades to rotate from a deployed starting position to a retracted working position. In some embodiments, the lift wheel assembly includes a middle flange, a spring barrel disposed in the middle flange, an elastic member preloaded in the spring barrel, and a spring lever slidably disposed in the spring barrel and coupled to the lift blade. In some embodiments, the resilient member comprises a spring, wherein the spring is configured to provide a pre-load force to the spring rod that radially contracts the spring rod. In some embodiments, the lifting wheel assembly further comprises a threaded sleeve in threaded connection with the spring rod, and a T-block in connection with the threaded sleeve and the lifting blade, respectively; One end of the linkage rod is hinged with the resistance blade, and the other end of the linkage rod is hinged with the threaded sleeve. In some embodiments, the lift wheel assembly further comprises lift baffles disposed at opposite ends of the lift blades. In some embodiments, the resistance wheel assembly comprises a mounting plate which is relatively parallel and arranged at intervals, and a plurality of support rods which are uniformly distributed between the two mounting plates, wherein the resistance blades are rotatably arranged on the support rods. In some embodiments, the drag wheel assembly further comprises a limit stop disposed on the drag blade and adapted to abut the mounting plate, wherein the linkage rod is hinged to the drag blade via the limit stop. In some embodiments, the drag wheel assembly further comprises drag baffles disposed at opposite ends of the drag blade. In some embodiments, the drag wheel assembly compris