Electronic drain system
US4197990A · kind A · utility
30Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1978 |
| Grant date | Apr 15, 1980 |
| Priority date | — |
| Expiry date | Aug 28, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16T1/48
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The disclosure relates to automated drain valves for pressurized fluid conduits such as steam conduits. Recognizing that there is a direct relationship between steam temperature and steam pressure at the saturation line; the saturation line is used to derive a variable set point for an automated drain system and method. The saturation temperature is compared with the actual temperature to determine the positioning of the conduit drain valves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.