Debris catcher with retention within screen
US8257585B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2009 |
| Grant date | Sep 4, 2012 |
| Priority date | — |
| Expiry date | Sep 28, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2201/208
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A debris catcher uses induced circulation from a venturi to urge debris laden flow into the lower end of a housing. An inlet tube maintains velocity so as to keep the debris moving with the fluid stream as it goes up the inlet tube. A screen fits over the open end of the inlet tube and runs down around the inlet tube toward the entrance of the debris laden fluid into the lower end of the housing. There is a clearance around the cylindrical portion of the screen so some flow can exit that way. There is also an open exit through the top of the screen that can be reached after the fluid stream makes two hairpin turns. Many modules can be stacked. Each module has a large screen area for flow to exit and progressive modules can have smaller screen openings in an uphole flow direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.