Clamp ring type metal sealgas pipe joint
US11761565B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2021 |
| Grant date | Sep 19, 2023 |
| Priority date | — |
| Expiry date | Nov 26, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L25/0036
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A clamp ring type metal seal gas pipe joint is connected to one end of a gas pipe, and includes a fitting joint, a nut, and a clamp ring. Axial contact surfaces of the clamp ring and the fitting joint are respectively provided with a convex portion configured in a convex V shape and a concave portion configured in a concave V shape matched with each other, so that an end part of the gas pipe is compressed and self-flared to form a sealing part when the fitting joint is tightened. In the process of tightening the nut and the fitting joint, the end part of the metal bellow is compressed and self-flared by the convex portion of the clamp ring and the concave portion of the fitting joint to form a cone surface to realize limit fixation and form a double sealing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.