Pipe burst safety device for natural gas pipe lines or the like
US4100932A · kind A · utility
2Cited by
4References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 28, 1976 |
| Grant date | Jul 18, 1978 |
| Priority date | — |
| Expiry date | May 28, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7762
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pipe line has a check valve therein, operable by an actuator. The actuator is connected to be operated by fluid pressure from the pipe line, and is connected with the pipe line by a control circuit including valve means. A differential pressure valve is connected in the control circuit, and is constructed to sense a drop in pressure within the pipe line downstream of the control valve. Upon sensing such a pressure drop, the differential pressure valve is effective to cause connection of the actuator to pipe line pressure upstream of the check valve, whereby the latter is automatically closed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.