Method and device for unclogging the top surface of the tube plate of a steam generator
US4452183A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 12, 1982 |
| Grant date | Jun 5, 1984 |
| Priority date | — |
| Expiry date | May 12, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF22B37/483
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method and device for unclogging the top surface of the tube plate of a steam generator comprising, in a cylindrical vessel, a bundle of bent tubes of inverted U-shape and connected to a tube plate. The unclogging is achieved by two water jets under high pressure coming from projection heads and which can be directed towards the tube plate. These two water jets are moved simultaneously and symetrically with respect to the diametric boundary line of two zones in the form of a semi-circle on the tube plate. At the same time the detached sludge is removed by aspiration of this sludge throughout the length of the peripheral zone of the tube plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.