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SUNFUN Group specializes in intelligent and sustainable industrial development. Driving quality advancement in manufacturing across China and the globe through technological innovation, we are committed to creating green value for a better human life.
We have deep expertise in smart energy and smart manufacturing, consistently achieving breakthroughs in precision production. Our capabilities range from 0.001-mm precision machining to the manufacture of components weighing from 0.1 grams to 150 tons. We maintain energy consumption within 0.1% and implement fully intelligent process management—all supported by four decades of specialized experience!
Innovation is the foundation of the growth of our group. We have built an open and collaborative innovation ecosystem, partnering with governments, enterprises, universities, and institutions to enable cooperative innovation and shared value, injecting sustained momentum into the industry.<br/>
As an accredited technology enterprise with its own institute and talent academy, SUNFUN has completed more than ten national-level R&D tasks and undertaken major projects commissioned by agencies such as the NDRC, MOST, and MIIT.
Upper part: length 9200 mm, width 3010 mm, height 3650mm.
Weight 28500Kg Lower part: length 10000 mm, width 4080 mm, height 3050mm.
Weight 57581kg Total weight of the cylinder 86081Kg
Product Overview
The CNB0 Exhausting Cylinder (Low-Pressure Outer Cylinder) serves as the primary conduit for steam transition within a steam turbine system. It facilitates the transfer of steam from the turbine’s internal stages to the condenser. As the steam’s kinetic energy is converted into mechanical energy, the cylinder directs the residual steam through the exhaust port and into the condenser to complete the energy conversion cycle.
Product Features & Technical Specifications
Manufacturing & Welding Standards
● Material Composition: The cylinder body is constructed from high-quality carbon steel, utilizing specialized welding techniques (Arc welding, Tungsten Inert Gas (TIG) shielded welding, and Metal Arc welding) in strict accordance with SQZ43.112.
● Quality Inspection: * Weld defect levels comply with ISO 5817-B and 5817-C.
● 100% Ultrasonic Testing (UT) is performed on the inspection area per SQB49.49 (Non-destructive testing of welded joints).
● 100% Surface Defect Inspection ensures structural integrity.
● Heat Treatment: Post-weld heat treatment (PWHT) is executed according to SQZ43.143 (Technical Specifications for Purchasing of Welded Inner Cylinders and Exhaust Cylinders).
Precision Machining & Processing
● Distributed Processes: The cylinder undergoes a rigorous production route guided by the "Steam Turbine Metalworking Process Card."
● Equipment: Rough and fine machining are conducted using high-precision CNC boring and milling machines, large-scale drilling machines, and vertical lathes.
● Finishing: Post-processing involves comprehensive cleaning and rust-proofing before final assembly.
Product Advantages
● Core Role in Energy Conversion: Essential for maintaining the efficiency of the steam cycle by ensuring smooth exhaust flow.
● Structural Reliability: Adherence to ISO and SQB/SQZ standards guarantees high-level weld quality and durability.
● Precision Engineering: Advanced CNC machining ensures tight tolerances for complex industrial and power generation environments.
● System Stability Support: Modern thermal power units (utilizing these cylinders) provide critical peak-shaving and frequency regulation capabilities, compensating for the instability of renewable energy sources (wind and solar).
Product Applications
● Power Generation: As the core component of steam turbines in thermal power plants, which remain a pillar of the power system due to mature technology and cost-effective fuel sources.
● Industrial Drive Systems: Used in various large-scale industrial models to drive equipment such as large fans, water pumps, and compressors.
● Marine Propulsion: Applied in shipboard steam turbines to drive propellers and provide primary propulsion power.
