Sootblower with lance bypass flow
US5237718A · kind A · utility
16Cited by
3References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 1, 1992 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | May 1, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28G1/166
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A sootblower for use in cleaning heat exchanger surfaces in which a drain is provided for selectively draining a portion of the blowing medium from the sootblower lance tube for discarding externally of the heat exchanger. The lance tube drain enables the discharge of blowing medium from the lance tube into the heat exchanger to be reduced during portions of a cleaning cycle in which the lance tube nozzles are not directed toward a surface to be cleaned yet enabling a minimum flow of blowing medium through the lance tube for cooling or other purposes without discharging the minimum flow of blow medium into the heat exchanger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.