Counterweight automatic variable pitch system of generator, motor and engine

Abstract

The invention discloses a counterweight automatic variable pitch system of a generator, a motor and an engine. The automatic counterweight variable pitch system comprises a main shaft and a pluralityof blades distributed around the axis of the main shaft, and is characterized by further comprising a blade cavity shell which is arranged on the main shaft and is used for installing the blades, an elastic movable steering mechanism which is used for guiding the blades to deflect when the blades move relative to the blade cavity shell, and is used for applying elastic force to the blades, a bladecounterweight assembly which is used for counteracting the influence of the branch force formed by the blade gravity in the directions of the center lines of the blades in the rotation process of theblades, and the generator, or the motor or the engine which is connected to a rotating shaft. The system can be used for automatically obtaining optimal combinations of pitch angle and rotation speedon different types of turbine machines, and a pure mechanical structure is adopted, so that the influence of power failure and an inaccurate wind speed meter or user error is avoided, then the reliability, the strictness and the control efficiency of the system are improved, and the defects that an existing active control system is extremely complex and expensive are overcome. In addition, the automatic variable pitch system further overcomes the periodic influence of gravity during rotation of the blades.

Description

technical field [0001] The invention relates to blade technology, in particular to a counterweight automatic pitch-changing system for a generator, a motor and an engine. Background technique [0002] At present, devices that use rotating blades to achieve power input or power output are widely used, for example, they are widely used in wind power generators, water turbines, screw propellers, turbines, rotary machines and other equipment. Wherein, since the blade is affected by the velocity of the fluid (gas or liquid) during the rotation process, it is usually necessary to adjust the pitch angle of the blade for different flow velocities. In the prior art, the pitch angle of the blades is usually adjusted by means of electronic control, and the pitch angle of the blades is adjusted by using a computer system to detect the wind speed. However, all of the above rely on several subsystems, such as computers, software, anemometers, thermometers, etc., which are easily affected...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to provide an automatic pitch system, which solves the defects of low reliability and high cost of the automatic pitch system in the prior art, realizes improving the reliability of the automatic pitch system, and reduces its manufacturing cost and maintenance cost

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