Wind turbine with variable blade pitch for wind power electrical generator

摘要

The present patent application provides a wind turbine with variable blade pitch. The wind turbine with variable blade pitch includes a turbine shell coaxially disposed at a turbine axis; and at least three evenly distributed blade handle bases fixedly disposed at the outer circumference of the turbine shell. A blade handle axis is coaxially configured on each blade handle base. A blade is fixedly disposed on each blade handle axis. A centrifugal blade pitch changing unit is disposed on the turbine shell and configured to adjust the rotation speed of the wind turbine. When the rotating speed of the wind turbine exceeds the rated rotating speed, it is regulated by the centrifugal blade pitch changing unit, so as to avoid the rotating speed of the wind turbine to be greatly increased due to the wind speed rise and make the wind turbine run stably at the rated rotating speed.

主权项

1. A wind turbine with variable blade pitch for a wind power electrical generator comprising:
a turbine shell coaxially disposed at a turbine axis; at least three evenly distributed blade handle bases fixedly disposed at an outer circumference of the turbine shell, a blade handle axis being coaxially configured on each blade handle base, and a blade being fixedly disposed on each blade handle axis; wherein: a centrifugal blade pitch changing unit is disposed on the turbine shell and configured to adjust a rotation speed of the wind turbine; and wherein the centrifugal blade pitch changing unit comprises a plurality of speed adjustment rods, a speed adjustment spring, and a plurality of adjustment screws, a quantity of the adjustment screws corresponds to a quantity of the blade handle axes, the speed adjustment rods are fixedly disposed on the blade handle axes by a certain angle, a center of gravity of each speed adjustment rod is deviated from a center of an axis of each blade handle axis, a spring fixture dish is fixedly disposed on the turbine shell, a spring push plate is fixedly disposed at an end of the adjustment screws, another end of the adjustment screws extends through the speed adjustment spring and the spring fixture dish, a hinge cover is coaxially connected to each blade handle axis, another end of the adjustment screws are screwedly connected with the hinge cover, an end of the speed adjustment spring is fixedly connected with the spring push plate, another end of the speed adjustment spring is fixedly connected with the spring fixture dish.