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M21 backpressure turbine is single stage backpressure.Its rotor uses a velocity-compounded stage impeller..Nozzle pitch diameter is 624mm.Its speed regulating system can use KOEI electronic speed governing,and also can use woodward TG17 or TG13 mechanical governor and TG17E+2301A controller electronic governing system,thin oil site forced lubrication.Its speed of main shaft is 1500-4500r/min,and it can achieve gear shaft output to installation of gearbox according to user requirements.The main feature of models is the use of low-temperature,low-pressure steam as steam source dragging revolving mechanical to realize the energy stave using for energy conservation and economize on raw materials.
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