Valve installation apparatus and methods
US7799177B2 · kind B2 · utility
1Cited by
12References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2004 |
| Grant date | Sep 21, 2010 |
| Priority date | — |
| Expiry date | Apr 11, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49306
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A deheader valve is fitted onto an existing or new coke drum by initially positioning the body and valve, and then raising the valve to mate with the flange using a lifting device other than a chain fall. The vertical positioning of the deheader valve is preferably accomplished with a hydraulic or pneumatic piston, winch, scissor jack, ratchet jack, screw jack, and so forth. The distance traveled by the valve using these devices is more than 2 cm, commonly at least 20 cm, and in some installations up to 40 cm or more. In retrofit situations an oil inlet is provided in a side wall of the drum above the bottom drum flange.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.