Design of a New Type Wind Powered Water Pump
Wind has been an
important renewable energy resource for human beings that it has become a key
to utilize and store wind energy in technology development for energy. A lot of
methods have been applied to energy storage, such as power generation, heat
production, water pumping, and gas compression. Wind-powered Chinese
square-pallet chain-pumps used to be the major pumping machinery for farmland
irrigation and salt processing in Tianjin and
northern JiangsuProvince in China
before 1980. Based on the restoration and the engineering analysis of
vertical-axis-type Chinese windmill, Chinese great windmill for short, this
study tends to precede the innovative design of a new type wind powered water
pump.
The windmachine of
the new type wind powered water pump, according to the structure and the motion
mode of Chinese great windmill, focuses on the design of sail. With the
analyses of motion and power between Chinese great windmill and its sail, the
angles of thesail at the first limit position (∅) and the second limit position (λ), when
the optimal torque is output, are acquired for the innovative design of the new
type sail; and, a new type windmill with simply structure, easily disassembled
sail, and possibility to adapt to various directions of wind is further
achieved.
To effectively
enhance the height of pumping and the transmission efficiency, this study
utilizes modern pump designing and transmission mechanism to replace the
Chinese square-pallet chain-pump and the transmission shaft driven by Chinese
great windmill. Pump designing applies double-acting force pump and torque
amplification mechanism combines crank-rock mechanism and slider-crank
mechanism. The new type wind powered water pump therefore couldeffectively
promote the pumping capability and the efficiency of Chinese great windmill as
well as meet the water demand of modern farmland irrigation, salt processing,
and fish farm.