Sootblower nozzle assembly with an improved downstream nozzle
US6764030B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 2, 2002 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Sep 17, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S239/13
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
The present invention discloses a new design of the nozzle and the lance tube of a sootblower to clean the interior of a heat exchanger by impingement of a jet of cleaning medium. In accordance with the teachings of the present invention the sootblower design developed, incorporates a nozzle at the tip of the distal end of the lance tube (downstream nozzle). The lance tube also includes an upstream nozzle positioned opposite and longitudinally apart the distal end nozzle. This design allows for the flow of the cleaning medium to enter into the inlet end of the nozzle without coming to a halt at the end of the lance tube. Further, the present invention also provides for a converging channel to be disposed in the interior of the lance tube to direct the flow of cleaning medium passing the upstream nozzle into the inlet end of the downstream nozzle with minimal hydraulic losses and flow maldistribution. The present invention also discloses an airfoil body to be placed around the upstream nozzle to minimize the flow disturbances caused by the bluff body of the converging channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.