US3780564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flue gas dew point temperature transducer
Assignee: Individual
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Filing: 1972-05-16
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Granted: 1973-12-25
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Expires: 1992-05-16
Abstract
Abstract A flue gas dew point temperature transducer having a heated shell with primary cell electrodes and a thermoelement disposed on the portion of the shell surface which serves as a flue gas vapor condensation area. Cooling said condensation area is effected by a coolant supplied to and led off said condensation area by a coolant inlet and a coolant outlet duct mounted inside the transducer shell. One of the ducts forms a helix wound around the other duct, whereby the measurement accuracy is enhanced and the transducer application range is extended.
Inventors
- 👤 T Levina
- 👤 M Serkh
- 👤 I Guzynin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:17
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/56; G01N25/66; G01N25/68; G01N25/14; G01N25/142
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
155 words
A flue gas dew point temperature transducer comprising: a shell, a part of the external surface of said shell serving as a flue gas vapor condensation area; two electrodes of a primary cell disposed on said flue gas vapor condensation area; a thermoelement disposed on said flue gas vapor condensation area; a coolant inlet duct disposed within said shell adapted to feed a coolant to the interior of said shell for cooling said flue gAs vapor condensation area; a coolant outlet duct disposed within said shell and in communicating with said coolant inlet duct, one of said ducts being made in the form of a helix wound around the other of said ducts, said helix in spaced relationship with the inner surface of said shell so as to permit uniform flow of Coolant along said inner shell surface in at least the area of said flue gas vapor condensation; and means for heating said shell.
Claim 2
Dependent Claim
155 words
A flue gas dew point temperature transducer comprising: a shell, a part of the external surface of said shell serving as a flue gas vapor condensation area; two electrodes of a primary cell disposed on said flue gas vapor condensation area; a thermoelement disposed on said flue gas vapor condensation area; a coolant inlet duct disposed within said shell adapted to feed a coolant to the interior of said shell for cooling said flue gAs vapor condensation area; a coolant outlet duct disposed within said shell and in communicating with said coolant inlet duct, one of said ducts being made in the form of a helix wound around the other of said ducts, said helix in spaced relationship with the inner surface of said shell so as to permit uniform flow of Coolant along said inner shell surface in at least the area of said flue gas vapor condensation; and means for heating said shell.
Claim 3
Dependent Claim
36 words
A transducer of claim 1, said space between the internal surface of said shell and said helical duct forming an annular clearance adapted to enhance the efficiency of cooling of said flue gas vapor condensation area.
Claim 4
Dependent Claim
46 words
A transducer of claim 1, comprising a heat-insulating material screen being positioned in said shell, said screen extending in proximate spaced relationship across the coolant outlet end of said coolant inlet duct, said screen being disposed at a clearance with the internal surface of said shell.
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) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |