Method of preventing recirculation pump cavitation and forced recirculation pump type steam-generating apparatus using the method
US4278051A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 30, 1979 |
| Grant date | Jul 14, 1981 |
| Priority date | — |
| Expiry date | Mar 30, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF22D11/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method of preventing a recirculation pump cavitation and a forced recirculation type steam-generating apparatus are disclosed in which water is forcibly circulated by a recirculation pump. The pressure of the steam-generating section of the steam-generating apparatus and the temperature of water at the suction side of the recirculation pump are detected. The rotational speed of the recirculation pump is reduced to a predetermined speed level when the difference between the saturation temperature associated with the detected pressure and the water temperature is reduced below a predetermined value, thus preventing the cavitation which otherwise might occur in the recirculation pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.