System for monitoring flow rate difference in water cooling conduit
US4090179A · kind A · utility
20Cited by
3References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 21, 1977 |
| Grant date | May 16, 1978 |
| Priority date | — |
| Expiry date | Jan 21, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21B7/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for monitoring the frequency difference between pulse output signals derived from a pair of flowmeters interposed, respectively, in the inlet and outlet lines of a flow conduit supplying cooling water to the tuyere of a blast furnace, the frequency difference being indicative of water leakage. The pulse output signals produced by the respective flowmeters during each predetermined measuring period are integrated. The integrated values are compared with each other, the difference therebetween being monitored whereby when the difference exceeds a predetermined set value, an alarm is generated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.