Mechanically attached fitting for use in a sour environment
US8870237B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 4, 2011 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Mar 14, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L13/146
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fitting for coupling with a pipe in a sour environment includes a coupling body, a ring positioned to fit over an end of the coupling body, a main seal formed on an inner surface of the coupling body, a transition section positioned adjacent the main seal, an inboard seal formed on an inner surface of the coupling body, and an outboard seal formed on an inner surface of the coupling body. The transition section is formed as an indentation on the inner surface of the coupling body and has a first portion with a first diameter and a second portion with a second diameter, with the first diameter being greater than the second diameter. When the ring is fitted over the at least one end of the coupling body via force, the ring and coupling body apply a coupling force to the main seal, the outboard seal and the inboard seal to connect the pipe to the coupling body in a non-leaking manner. The fitting is made of a low alloy carbon steel material. The main seal includes a first seal, a second seal, and a third seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.