Reducing cracking adjacent shell flange connecting bolts
US6467988B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 2000 |
| Grant date | Oct 22, 2002 |
| Priority date | — |
| Expiry date | May 20, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/75
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A flanged joint connection for connecting together by a bolted connection a pair of casing shells having connecting flanges. The connection reduces bearing stress concentrations adjacent fillets provided at the junction of the flange and the casing shell surface. A rectilinear edge portion is provided on a bolt head or a spacer, or both, to avoid point contact of the bolt head or spacer and the flange face or fillet. The rectilinear edge portion includes a convexly-curved surface that faces the fillet. The incidence of cracks between a bolt hole and the fillet, as well as the incidence of circumferential cracks between adjacent bolt holes is significantly reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.