Tower applications

Wind turbine towers consist of numerous bolted connections, which are distributed throughout the structure. This large quantity of connections increases the complexity of maintenance and requires comprehensive inspection and maintenance plans to ensure all connections are properly addressed.​

Wind turbine towers are often degraded due to harsh conditions making repairs difficult, expensive, and time consuming. Nord-Lock Group products can improve structural integrity and reduce maintenance time.​

Common issues:

Securing structures subject to vibration

Ladders, railings, and steel structures are susceptible to damage due to vibration and loads over time. This can result in damage to the turbine or unsafe working conditions. 

The unique design of Nord-Lock® washers prevents loosening caused by vibrations and dynamic loads, ensuring the integrity of the joint. By preventing spontaneous loosening, Nord-Lock washers help maintain the integrity of the joints, reduce the risk of downtime, and contribute to the long term efficiency of the turbines. 

Working within confined radial spaces​

Bolted connections in wind turbine towers often require specific preloading and torque control during installation to achieve proper tension. However, maintaining and ensuring the correct preload in the bolts over time can be challenging. External factors, such as wind-induced vibrations or tower movement, can affect the preload and cause bolts to loosen or fail.​

Both Boltight® mechanical tensioners and Superbolt® mechanical tensioners can address confined radial spaces.​

The Boltight Typhoon+ multi-stage and single-stage range of tensioners are light and simple to use and provide high and accurate preloads with a minimum diameter envelope. ​

Superbolt multi-jackbolt tensioners break down high torque requirements into manageable torques, so only simple hand tools are needed.​

Remote monitoring of preload​

Bolted connections in wind turbine towers often require specific preloading and torque control during installation to achieve proper tension. However, maintaining and ensuring the correct preload in the bolts over time can be challenging. External factors, such as wind-induced vibrations or tower movement, can affect the preload and cause bolts to loosen or fail.​

Superbolt® Load-Sensing Tensioners (LST) replace traditional nuts to provide remote preload monitoring and a live reading of data.​

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