US3577784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for measuring coke oven flue wall temperatures
Assignee: Raymond Kaiser Engineers Inc
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Filing: 1968-12-30
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Granted: 1971-05-04
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Expires: 1988-12-30
Abstract
Abstract A hollow probe having an angularly positioned reflective surface is inserted through an inspection opening in a coke oven battery roof into an ''''off'''' flue. The reflective surface is focused on the flue wall at a preselected elevation and reflects the radiant energy emitted by the flue wall along an unobstructed vertical passageway within the probe to a radiation pyrometer positioned externally of the flue where the flue wall temperature is determined and recorded. The probe includes three concentric cylindrical members. Adjacent the lower end portion of the probe there is an opening in the cylindrical members providing a window for the reflective surface. A coolant is circulated between the outer and intermediate cylindrical members and an inert gas is blown through the central passageway to prevent contamination of the reflective surface.
Inventors
- 👤 Joseph E Kovacic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:57
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/02; G01J5/06; G01J5/061; C; C10; C10B; C10B45/00; G01J5/0044; G01J5/0205; G01J5/04; G01J5/041; G01J5/08; G01J5/0813; G01J5/0818; G01J5/084; G01J5/0843
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
41 words
A method for measuring the temperature of a wall in a coke oven flue as set forth in claim 1 which includes, conveying a stream of gas across said reflective surface to maintain said reflective surface substantially free of particulate material.
Claim 2
Dependent Claim
33 words
A method for measuring the temperature of a wall in a coke oven flue as set forth in claim 2 which includes, cooling said probe while said probe is positioned in said flue.
Claim 3
Dependent Claim
60 words
A method for measuring the temperature of a wall in a coke oven flue as set forth in claim 1 which includes, reflecting the radiant energy emitted by said flue wall adjacent one end of said probe through an unobstructed enclosed passageway in said probe to the sensing head of a radiation pyrometer adjacent the other end of said probe.
Claim 4
Dependent Claim
39 words
A method for measuring the temperature of a wall in a coke oven flue as set forth in claim 1 which includes, moving said reflective surface vertically within said flue to obtain a temperature profile of said flue wall.
Claim 5
Dependent Claim
142 words
Apparatus for measuring the temperature profile of a wall in a coke oven flue that emits radiant energy comprising: an elongated cylindrical probe having a lower end portion and an upper end portion with an axial unobstructed passageway therebetween, said probe having an opening in the sidewall adjacent said lower end portion for use in said flue so that said radiant energy can pass through said opening into said probe passageway, a mirror having a reflective surface positioned in said probe passageway opposite said opening, said mirror oriented in said passageway to reflect said radiant energy entering through said opening upwardly through said unobstructed passageway, and a radiation pyrometer having a sensing head directed toward the mirror in said passageway, said radiation pyrometer sensing head operable to receive and to focus said radiant energy reflected by said mirror through said unobstructed passageway.
Claim 6
Dependent Claim
41 words
Apparatus for measuring the temperature profile of a wall in a coke oven flue that emits radiant energy as set forth in claim 6 which includes, means to cool said probe while said probe is positioned in a coke oven flue.
Claim 7
Dependent Claim
37 words
Apparatus for measuring the temperature profile of a wall in a coke oven flue that emits radiant energy as set forth in claim 6 which includes, means to maintain said mirror reflective surface free of particulate material.
Claim 8
Dependent Claim
73 words
Apparatus for measuring the temperature profile of a wall in a coke oven flue that emits radiant energy as set forth in claim 6 in which said probe includes, a plurality of concentric tubes forming said axial unobstructed passageway, in intermediate annular passageway and an outer annular passageway, and means to circulate a cooling fluid through said intermediate and outer annular passageways to cool said probe while positioned in a coke oven flue.
Claim 9
Dependent Claim
94 words
Apparatus for measuring the temperature profile of a wall in a coke oven flue that emits radiant energy as set forth in claim 6 which includes: a window enclosing said probe end portion, a source of gas, an inlet opening in the sidewall of said probe adjacent said probe upper end portion, means connecting said source of gas to said opening, and means to circulate said gas through said inlet opening, downwardly through said unobstructed axial passageway and across the reflective surface of said mirror to maintain said reflective surface free of particulate matter.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |