Transcription of Field Pole Attachment Cracking on Hydrogenerators
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Field Pole Attachment Cracking on Hydrogenerators
This paper presented at the 2016 International Conference of Doble Clients Field pole Attachment Cracking on Hydrogenerators Bill Moore, Director, Technical Services National Electric Coil Introduction Rotor Field poles on Hydrogenerators use dovetail, Tee head or radial bolt attachments to attach to the rotor spider. Dovetail and Tee head attachments are more common and can consist of single or double Attachment arrangements. Tapered keys are driven in place between the Attachment and the rotor rim to tighten and secure the Field pole to the rotor spider. A dovetail arrangement is shown below in Figure 1, and a Tee head arrangement in Figure 2. Figure 1 above showing dovetail Attachment to the rotor rim. Figure 2 above shows a Tee head Attachment of the rotor pole to the rotor rim. This paper presented at the 2016 International Conference of Doble Clients Background Due to rotational forces during operation, attachments can be highly stressed.
This paper presented at the 2016 International Conference of Doble Clients Field Pole Attachment Cracking on Hydrogenerators . Bill Moore, P.E. Director, Technical Services
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