Key Features
- Composite Shell: Molded glass/carbon fiber epoxy construction for a very high strength-to-weight ratio.
- Corrosion & Temperature Resistance: Engineered resin system resists UV, salt spray and extreme temperatures, ensuring longevity.
- Aerodynamic Shape: Streamlined contour minimizes drag and noise. External surfaces use glossy UV-stable gelcoat.
- Lightning Readiness: Internal static discharge paths or integrated conductive mesh available to meet lightning protection requirements.
- Balanced Design: Precision balance tuning during manufacture minimizes vibrations during operation.
Benefits
- Protects Hub Mechanics: Shields the rotor hub, pitch system, and nacelle from the elements, greatly reducing wear on these components.
- Performance Reliability: Robust design avoids debris ingress, improving uptime and reducing service calls.
- Weight Savings: Lightweight spinner cover reduces the rotor’s rotational inertia, improving turbine start-up and control.
- Aesthetic & Branding: Smooth, glossy finish improves the visual profile and can be custom-painted or textured per customer specification.
Applications
- Used on the rotor hub of wind turbines across all power classes (IEC I-IV) and environments (offshore/onshore). Spinner covers can be retrofitted on existing hubs or incorporated into new turbine designs. Typical uses include protecting the yaw/pitch drives and guiding airflow into the nacelle.
Technical Specifications
- Spinner covers range from a few meters in diameter on small turbines to over 6 m on multi-megawatt machines. Materials and laminate schedules are engineered for tensile/compressive strength typically exceeding 1000–2000 MPa in fiber direction. Fastening flanges and mounting bushings (often metallic inserts) are molded in. Optional integrations include sensor ports, lightning protection tabs, and ventilation slots.
Unique Selling Points (USPs)
- We deliver custom-engineered spinner covers with complete quality control. Each cover is designed in collaboration with the customer to ensure compatibility with their hub system. Our composites are validated for offshore/offshore use, and we provide tailored logistics (packaging, just-in-time delivery) for global turbine assembly.
- Shell
- Door
- Cap
Shell
In the wind turbine context, a shell often refers to a large structural composite panel or housing component (such as a nacelle side or top panel). These shells are molded from fiberglass or carbon-fiber laminates, creating a rigid yet lightweight enclosure. For example, a nacelle side-shell is produced as a large curved panel that integrates with the bedplate and covers. Our composite shells feature precise tolerances and high-quality finishes, making installation straightforward. Engineered for weather resistance, they protect internal systems from moisture and UV exposure.
Key Features
- Fiberglass/carbon composite construction; molded to exact dimensions; gel-coated exterior for UV and abrasion protection; integrated stiffening ribs or inserts for load-bearing; sealed joints and flanges for mounting.
Benefits
- Provide durable, corrosion-free cladding for turbine bodies; contribute to the overall stiffness of the nacelle or tower section; reduce noise and vibration due to dampening properties of composites.
Applications
- Nacelle side panels, top covers, or custom enclosures on wind turbines and renewable energy equipment.
Technical Specifications
- Typical shell panels are multi-layer laminates (~5–10 mm thickness) with sandwich or solid construction, rated for loads per IEC 61400 structural standards. Available in various sizes up to full-nacelle dimensions.
Unique Selling Points (USPs)
- Our shells are designed in-house to integrate with OEM hardware. We can co-mold attachment points and incorporate design features like insulation pockets, firefighting material, or cable raceways, adding value beyond just a panel.
Door
Access doors and hatches on wind turbines are composite (FRP) or hybrid panels that allow technicians to safely enter the turbine nacelle or tower. Constructed from reinforced plastic laminates, these doors are designed for frequent use and exposure to weather. They are waterproof and often include foam seals, non-skid surfaces, and safety glazing as needed. Wind-turbine access doors are engineered for a precise fit on tower bases, ladder cages, and nacelle entrances, providing secure closure and easy operation.
Key Features
- Corrosion-resistant FRP laminate; integrated handles and hinges with stainless or galvanized hardware; weather seals (EPDM gaskets); optional vision panels or ventilation openings; lockable mechanisms.
Benefits
- Allow safe, ergonomic access for maintenance personnel; resist rust and salt spray in offshore/onshore environments; reduce thermal bridging compared to metal doors; lightweight construction eases manual operation.
Applications
- Nacelle entrance doors, tower base doors, access hatches on platforms and walkways.
Technical Specifications
- Doors are typically 30–60 mm thick, meeting wind-load and impact criteria. Fire-rated options and UL-approved hardware are available. Standard sizes match ladder cages (e.g. 600×1800 mm) and OEM openings.
Unique Selling Points (USPs)
- We can supply ready-to-install FRP door assemblies with certified sealing and safety ratings. Custom logos or colors can be molded in. Non-metallic construction ensures electrical insulation for added safety.
Cap
In wind turbines, a cap often refers to blade tip or root caps – the molded end-pieces that finish off the blade profile. A tip cap is a small composite dome attached at the blade tip; its purpose is to seal the blade interior and streamline airflow. Made of the same fiberglass or carbon composite as the blade, the tip cap is bonded with tough adhesive and coated for UV protection. Tip caps prevent moisture ingress and help manage noise at the blade tip. A root cap similarly covers the blade root interface, enclosing the hub connection and often containing attachment hardware. Caps are precision-molded to match the blade geometry exactly.
Key Features
- Composite layup matched to blade shell material; smooth aerodynamic shape; compatible bonding surfaces; UV-stable finish.
Benefits
- Prevent ingress of debris and rain into the blade; maintain the designed tip shape to minimize noise and turbulence; improve safety (prevents birds entering the hollow blade).
Applications
- Tip and root caps on wind turbine blades of all lengths, in onshore/offshore turbines. Also used on small auxiliary structures to seal ends.
Technical Specifications
- Tip caps weigh a few kilograms, typically made of 2–5 mm fiberglass laminate. They meet the same flammability and structural standards as the main blade. Root caps are larger and may incorporate connection hardware (flange, ringfittings) within the cap assembly.
Unique Selling Points (USPs)
- We supply blade caps that are pre-cured and ready for bonding. Precision tooling ensures a perfect match with any blade profile. Customized caps for active de-icing systems or lightning termination can be provided on request.