US3096744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for regulating the steam temperature in a steam generator
Assignee: Sulzer AG
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Filing: 1959-12-10
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Granted: 1963-07-09
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Expires: 1979-12-10
Abstract
No abstract record available.
Inventors
- 👤 Profos Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:29
CPC Classifications
F; F22; F22G; F22G5/00; F22G5/12; F01; F01K; F01K3/00; F01K3/18; F01K3/20; F01K3/22; F22B; F22B35/00; F22B35/06; F22B35/10; F22B35/102; F22B35/104
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
A STEAM GENERATOR COMPRISING SERIES-CONNECTED UPSTREAM AND DOWNSTREAM HEAT EXCHANGE SURFACES OVER WHICH A WORKING SUBSTANCE FLOWS SUCCESSIVELY, A TEMPERATURE CONTROL CIRCUIT FOR EACH OF SAID SURFACES, EACH SAID CONTROL CIRCUIT COMPRISING MEANS TO DEVELOPA SIGNAL REPRESENTATIVE OF THE OUTPUT STEAM TEMPERATURE OF ITS HEAT EXCHANGE SURFACE, MEANS TO DEVELOP A SIGNAL REPRESENTATIVE OF A REFERENCE TEMPERATURE, MEANS TO COMPARE SAID FIRSTNAMED SIGNAL WITH SAID SIGNAL REPRESENTATIVE OF A REFERENCE TEMPERATURE, AND MEANS TO ADJUST THE STEAM TEMPERATURE AT THE OUTPUT OF ITS HEAT EXCHANGE SURFACE IN ACCORDANCE WITH THE RESULT OF SAID COMPARISON, SAID ADJUSTING MEANS IN THE CONTROL CIRCUIT OF SAID DOWNSTREAM SURFACE COMPRISING WATER INJECTION MEANS UPSTREAM OF SAID DOWNSTREAM SURFACE AND MEANS TO VARY THE QUANTITY OF WATER INJECTED THROUGH SAID INJECTION MEANS DIRECTLY WITH THE STEAM TEMPERATURE AT THE OUTLET OF SAID DOWNSTREAM SURFACE, SAID GENERATOR FURTHER COMPRISING MEANS TO MEASURE THE RATE OF WATER INJECTION UPSTREAM OF SAID DOWNSTREAM SURFACE, AND MEANS TO ADJUST THE REFERENCE TEMPERATURE IN THE CONTROL CIRCUIT OF SAID UPSTREAM SURFACE AS AN INVERSE FUNCTION OF SAID WATER INJECTION RATE.
Claim 2
Dependent Claim
180 words
A STEAM GENERATOR COMPRISING SERIES-CONNECTED UPSTREAM AND DOWNSTREAM HEAT EXCHANGE SURFACES OVER WHICH A WORKING SUBSTANCE FLOWS SUCCESSIVELY, A TEMPERATURE CONTROL CIRCUIT FOR EACH OF SAID SURFACES, EACH SAID CONTROL CIRCUIT COMPRISING MEANS TO DEVELOPA SIGNAL REPRESENTATIVE OF THE OUTPUT STEAM TEMPERATURE OF ITS HEAT EXCHANGE SURFACE, MEANS TO DEVELOP A SIGNAL REPRESENTATIVE OF A REFERENCE TEMPERATURE, MEANS TO COMPARE SAID FIRSTNAMED SIGNAL WITH SAID SIGNAL REPRESENTATIVE OF A REFERENCE TEMPERATURE, AND MEANS TO ADJUST THE STEAM TEMPERATURE AT THE OUTPUT OF ITS HEAT EXCHANGE SURFACE IN ACCORDANCE WITH THE RESULT OF SAID COMPARISON, SAID ADJUSTING MEANS IN THE CONTROL CIRCUIT OF SAID DOWNSTREAM SURFACE COMPRISING WATER INJECTION MEANS UPSTREAM OF SAID DOWNSTREAM SURFACE AND MEANS TO VARY THE QUANTITY OF WATER INJECTED THROUGH SAID INJECTION MEANS DIRECTLY WITH THE STEAM TEMPERATURE AT THE OUTLET OF SAID DOWNSTREAM SURFACE, SAID GENERATOR FURTHER COMPRISING MEANS TO MEASURE THE RATE OF WATER INJECTION UPSTREAM OF SAID DOWNSTREAM SURFACE, AND MEANS TO ADJUST THE REFERENCE TEMPERATURE IN THE CONTROL CIRCUIT OF SAID UPSTREAM SURFACE AS AN INVERSE FUNCTION OF SAID WATER INJECTION RATE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-08 | 1967-01-07 | 1967-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-08 | 1971-01-07 | 1971-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-08 | 1975-01-07 | 1975-07-09 | $7700.00 | Window Closed / Lapsed |