US3127877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Once-through boiler and method of operating the boiler
Assignee: Sulzer AG
•
Filing: 1960-07-15
•
Granted: 1964-04-07
•
Expires: 1980-07-15
Abstract
No abstract record available.
Inventors
- 👤 Profos Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:52
CPC Classifications
G; G21; G21D; G21D5/00; G21D5/04; G21D5/08; G21D5/12; G21D5/14; E; E05; E05B; E05B63/00; E05B63/04; E05B63/048; F; F22; F22B; F22B1/00; F22B1/02; F22B1/08; F22B1/18; F22B1/1823; F22B35/00; F22B35/004; F22B35/06; F22B35/10; F22B35/101; F22B35/102; G21D3/00; G21D3/08; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
269 words
A METHOD OF OPERATING A HEAT EXCHANGER FOR COOLING THE COOLANT FLUID OF A NUCLEAR REACTOR, THE HEAT EXCHANGER HAVING A TUBE SYSTEM FORMING A ONCE-THROUGH TYPE FORCED FLOW VAPOR GENERATOR WHEREIN A VAPORIZABLE OPERATING MEDIUM IS FORCED TO FLOW AT VARIABLE FLOW RATES CORRESPONDING TO VARIABLE LOADS IN COUNTERFLOW RELATION TO THE COLANT ISSUING FROM THE REACTOR CONSECUTIVELY THROUGH A FIRST HEAT EXCHANGE SECTION, A LIQUID SEPARATOR AND THROUGH A SECOND HEAT EXCHANGE SECTION THE METHOD COMPRISING: MAINTAINING A FLOW RATE OF THE OPERATING MEDIUM THROUGH THE FIRST HEAT EXCHANGE SECTION AT WHICH FLOW RATE THE OPERATING MEDIUM LEAVES SAID FIRST HEAT EXCHANGE SECTION IN WET VAPOR STATE, AND SEPARATING THE LIQUID PHASE FROM THE VAPOR PHASE IN SAID SEPARATOR AND CONDUCTING THE VAPOR INTO SAID SECOND HEAT EXCHANGE SECTION AND DIVERTING THE LIQUID PHASE FROM SAID SECOND HEAT EXCHANGE SECTION, UPON OPERATION OF THE HEAT EXCHANGER BELOW A PREDETERMINED LOAD; MAINTAINING A FLOW RATE OF THE OPERATING MEDIUM THROUGH THE FIRST HEAT EXCHANGE SECTION AT WHICH FLOW RATE THE OPERATING MEDIUM LEAVES SAID FIRST HEAT EXCHANGE SECTION IN SATURATED VAPOR STATE AND PASSING THE ENTIRE EFFLUENT OF SAID FIRST HEAT EXCHANGE SECTION INTO SAID SECOND HEAT EXCHANGE SECTION, UPON OPERATION OF THE HEAT EXCHANGER AT SAID PREDETERMINED LOAD; AND MAINTAINING A FLOW RATE OF THE OPERATING MEDIUM THROUGH THE FIRST HEAT EXCHANGE SECTION AT WHICH FLOW RATE THE OPERATING MEDIUM LEAVES SAID FIRST HEAT EXCHANGE SECTION IN SUPERHEATED VAPOR STATE AND PASSING THE ENTIRE EFFLUENT OF SAID FIRST HEAT EXCHANGE SECTION INTO SAID SECOND HEAT EXCHANGE SECTION, UPON OPERATION OF THE HEAT EXCHANGER ABOVE SAID PREDETERMINED LOAD.
Claim 2
Independent Claim
269 words
A METHOD OF OPERATING A HEAT EXCHANGER FOR COOLING THE COOLANT FLUID OF A NUCLEAR REACTOR, THE HEAT EXCHANGER HAVING A TUBE SYSTEM FORMING A ONCE-THROUGH TYPE FORCED FLOW VAPOR GENERATOR WHEREIN A VAPORIZABLE OPERATING MEDIUM IS FORCED TO FLOW AT VARIABLE FLOW RATES CORRESPONDING TO VARIABLE LOADS IN COUNTERFLOW RELATION TO THE COLANT ISSUING FROM THE REACTOR CONSECUTIVELY THROUGH A FIRST HEAT EXCHANGE SECTION, A LIQUID SEPARATOR AND THROUGH A SECOND HEAT EXCHANGE SECTION THE METHOD COMPRISING: MAINTAINING A FLOW RATE OF THE OPERATING MEDIUM THROUGH THE FIRST HEAT EXCHANGE SECTION AT WHICH FLOW RATE THE OPERATING MEDIUM LEAVES SAID FIRST HEAT EXCHANGE SECTION IN WET VAPOR STATE, AND SEPARATING THE LIQUID PHASE FROM THE VAPOR PHASE IN SAID SEPARATOR AND CONDUCTING THE VAPOR INTO SAID SECOND HEAT EXCHANGE SECTION AND DIVERTING THE LIQUID PHASE FROM SAID SECOND HEAT EXCHANGE SECTION, UPON OPERATION OF THE HEAT EXCHANGER BELOW A PREDETERMINED LOAD; MAINTAINING A FLOW RATE OF THE OPERATING MEDIUM THROUGH THE FIRST HEAT EXCHANGE SECTION AT WHICH FLOW RATE THE OPERATING MEDIUM LEAVES SAID FIRST HEAT EXCHANGE SECTION IN SATURATED VAPOR STATE AND PASSING THE ENTIRE EFFLUENT OF SAID FIRST HEAT EXCHANGE SECTION INTO SAID SECOND HEAT EXCHANGE SECTION, UPON OPERATION OF THE HEAT EXCHANGER AT SAID PREDETERMINED LOAD; AND MAINTAINING A FLOW RATE OF THE OPERATING MEDIUM THROUGH THE FIRST HEAT EXCHANGE SECTION AT WHICH FLOW RATE THE OPERATING MEDIUM LEAVES SAID FIRST HEAT EXCHANGE SECTION IN SUPERHEATED VAPOR STATE AND PASSING THE ENTIRE EFFLUENT OF SAID FIRST HEAT EXCHANGE SECTION INTO SAID SECOND HEAT EXCHANGE SECTION, UPON OPERATION OF THE HEAT EXCHANGER ABOVE SAID PREDETERMINED LOAD.
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) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |