The muscle that pitches wind-turbine blades can come from either a hydraulic or electric device on most turbines rated at and below 2.5 MW. But for turbines over 3 MW, the job of pitching blades more often falls to hydraulics. And hydraulics can handle more. “Hydraulics in wind turbines usually refers to the assemblies for…
Trends in slip rings
Slip rings provide a reliable transmission of power or signals from stationary cables in the nacelle to rotating equipment in the hub. A basic slip-ring assembly uses solid metal rings and graphite or precious-metal wire brushes, which contact the outside diameter of the rotating metal ring. As the ring turns, electrical current or signal conducts through…
Deublin’s multi-passage soft-seal rotating unions now available
A new product line of multi-passage soft-seal rotating unions is now available from Deublin Company. Rotating unions are components in a broad range of equipment applications that require connection between stationary supply lines, and rotating equipment including cylinders, rolls, spindles and clutches. While rotating unions are used to convey virtually all types of liquid or…
Deublin Company Launches New Website
A new website is now available from Deublin Company, a global manufacturer of rotary unions used in a variety of equipment and process industries. The new website includes hundreds of products available for purchase via secure credit card transaction, along with detailed specifications and application information. The website can be accessed at the following domain:…
Slip ring company acquires seal manufacturer
Deublin Co. has acquired Barco Seals of Cary, Ill. Both companies manufacture fluid power components used in a variety of equipment and process industries. Founded in 1908, Barco developed swivels and ball joints for the railroad industry. Over the years, Barco developed and manufactured hundreds of rotating unions, plane, and self-aligning swivel joints. Deublin Co., founded…
Slip rings tested for years of trouble-free operation
In response to demands for longer, uninterrupted service life, DEUBLIN Co. manufactures a complete line of electrical slip ring systems. These devices are used in many industrial applications such as wind turbines, tooling machines, plastic-molding machines, propulsion centrifuges, robotics, and others. The company says its slip rings are optimized with material configurations tested and proven…
Slip rings ready for demanding apps
Slip rings for a wide variety of industrial applications come from Deublin Co., Waukegan, Ill. The devices are easily configured for both power connections and signal connections. The signal portion of the slip rings is compatible with Ethernet, Profinet, RS-232, RS-485, RS-422, CAN as well as generic analog or digital sensing and 24V control signals.…
Hydraulic pitch control for wind-turbine blades
Generating steady shaft speed on a wind turbine means constantly adjusting the pitch of each blade to accommodate wind variations. The blades connect to a huge hub mounted to a shaft that turns a gearbox and a generator. Best turbine efficiency calls for a continuous pitch control on the blades. Blade pitch is powered by…