Assembly and method for preventing axial migration of springs in generator rotors
US10749395B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2018 |
| Grant date | Aug 18, 2020 |
| Priority date | — |
| Expiry date | Nov 2, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K15/13
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An assembly and a method for preventing an axial migration of a spring in a generator rotor are presented. The assembly includes a step pin radially disposed through an amortisseur and inserted into a spring of the generator rotor. The step pin is arranged axially apart from an adjacent radial vent passage and radially extends through the spring into a slot clearance between the spring and a creepage. The amortisseur includes a counter bore to retain a pin head and a pin shoulder. The spring includes a pin hole for a pin body extending therethrough. Diameters of the counter bore and the pin hole are smaller than diameters of amortisseur radial vent aperture and spring radial vent aperture. The step pin prevents an axial migration of the spring in rotor slots.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.