June 19, 2021
KCNA Pyongyang Times

New type of water turbine blade developed

Date: 13/05/2021 | Source: Pyongyang Times | Read original version at source

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The DPRK scientists have developed a new type of hydraulic turbine blade.

They established a theory on designing a new-type water turbine and created three-dimensional designs of blade models in different types. They also confirmed correct numerical values of such important factors as head, flow quantity and rotational frequency of turbine to develop a water turbine blade satisfying the requirements for optimization in the operation zone of light load and overload of the generator.

“As compared to the ordinary one, the new blade has 3 to 3.5% higher efficiency, reduces vibration to one third and doubles the repair cycle of the generator by nearly stabilizing cavitation,” said Chae Yong Chol, chief of the hydraulic machinery section of the power research institute under Hamhung University of Hydraulic Engineering.

In collaboration with a relevant unit, he succeeded in establishing a hydraulic turbine blade production process comprising casting, precision processing and assembly.

The new blade has already been introduced into the Jangjingang, Hochongang and other large and small power stations across the country and proved its worth.

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