High-Temperature Insulating FRP Cylinder for Wind Turbine Coupling
Wind Turbine Coupling High-Temperature Resistant Insulating FRP Tube (Pipe) – manufactured using glass fiber as reinforcement and high-temperature resistant epoxy resin as matrix, through winding/vacuum pressure impregnation (VPI) process. It serves as an insulating load-bearing tube installed in the high-speed shaft coupling, providing torque transmission, electrical isolation, heat resistance, and vibration damping functions.
1. Product Performance Parameters
(1) Electrical Insulation Performance
Power-frequency breakdown dielectric strength: ≥42 kV/10mm, ensuring reliable insulation barrier;
Normal-state insulation resistance: ≥10¹³ Ω, with no significant insulation degradation in high-humidity and salt-spray environments;
Resistant to partial discharge, suppressing harmonic conduction from frequency converters.
(2) Mechanical Properties
High circumferential tensile and torsional strength, capable of stably transmitting the rated torque of the wind turbine high-speed shaft;
Wound layer structure resistant to creep, with no loosening or delamination under long-term torsional loads;
Excellent toughness, buffering impact loads during start/stop and pitch adjustment, not prone to brittle fracture.
(3) Temperature Resistance and Flame Retardancy
Long-term continuous operating temperature: -45°C to 135°C, suitable for high-temperature conditions of wind turbine high-speed shafts;
Short-term peak temperature resistance up to 150°C, with no resin softening or flowing at high temperatures;
V0-grade flame retardant and self-extinguishing, with no molten dripping during combustion, meeting wind power fire protection standards.
(4) Outdoor Weather Resistance and Corrosion Protection
Salt spray resistance: withstanding 5000 hours of neutral salt spray testing, suitable for offshore wind power high-salt environments;
Resistant to UV radiation, wind, frost, rain, snow, and high-low temperature cycles, with no powdering or cracking during long-term outdoor use;
Resistant to lubricating oil, gear oil, and weak acids/alkalis, with stable performance when in contact with unit lubrication media.
(5) Customizable Dimensions
Customizable inner diameter, outer diameter, tube length, and standard wall thickness; machining allowance can be reserved at both ends for on-demand turning of flange assembly steps and positioning grooves, with high dimensional accuracy and achieved coaxiality.
2. Product Features
(1) Insulation isolation: blocks shaft currents, protects bearings and gearboxes, reducing electrical corrosion risks.
(2) High-temperature resistance: suitable for high-temperature operating conditions of wind turbine high-speed shafts.
(3) Lightweight and high-strength: 50%+ lighter than steel, with strength close to carbon steel, reducing drive system loads.
(4) Weather resistance and durability: resistant to aging, damp heat, and salt spray, suitable for harsh onshore/offshore environments.
(5) Low torsional loss: stable torsional stiffness and excellent transmission efficiency.
3. Application Fields
(1) Onshore wind turbine drive systems
(2) Offshore wind turbine equipment
(3) Insulating isolation tubes for high-power couplers in photovoltaic energy storage converters
(4) Insulating sleeves for high-power traction motor couplers in rail transit
(5) Insulation isolation components for drive systems of large industrial variable-frequency motors and high-speed generator sets
4. Ordering Instructions
(1) Customizable parameters: tube inner diameter, outer diameter, overall length, wall thickness, winding angle, and temperature resistance grade.
(2) Value-added machining services: positioning grooves, precision surface grinding, and flange matching precision machining.
