Kaplan Turbine Runner 1600mm Four Blade Stainless Steel for Low Head Hydropower Station Replacement

Four Blade Kaplan Turbine Runner for Low Head Stations

This Kaplan runner is built for low head hydropower stations that need a drop in replacement without reworking the existing draft tube and distributor. The hub and four blades are cast in stainless steel ZG06Cr13Ni4Mo, then machined to the dimensions recovered from an on site 3D scan of the original runner, so the blade to runner chamber clearance stays within the design range after installation.

Product Parameters

Replacement Workflow

• Site survey and 3D laser scan of the existing runner, shaft flange and runner chamber
• Point cloud comparison against original drawings to fix the new fit dimensions
• Casting, weld procedure qualification, stress relief and full machining of hub bore and keyway
• Pre assembly on the shop jig with blade tip clearance and hub seal check
• Optional matching supply of runner chamber liner, guide vane bushes and shaft seal

Why This Runner

Low head units are sensitive to blade tip clearance. Because the fitting dimensions come from the scanned original, the new runner does not need site grinding to fit the existing chamber, which shortens the outage window. The stainless grade resists sand erosion in river run off stations better than carbon steel, and G6.3 balancing keeps vibration low across the full blade angle range.

Packing and Delivery

The runner is coated with rust preventive, bolted to a steel skid and packed in a seaworthy wooden case. Lead time is typically 70 to 100 days after scan data and deposit confirmation, depending on diameter and blade configuration.

About DSSD

Deyang Dongsen Hydropower Equipment Co., Ltd. is based in Deyang, Sichuan, China and has supplied turbine generator sets and EPC services for more than 500 hydropower stations since 2007, covering Francis, Kaplan, Tubular, Pelton and Turgo units from 100 kW to 50 MW.