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US3861360A
Expired / Lapsed
US
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Steam generator buckstay leveler systems
Assignee: Combustion Engineering Inc
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Filing: 1974-04-10
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Granted: 1975-01-21
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Expires: 1994-04-10
Abstract
Abstract Apparatus is disclosed for maintaining the buckstays of a steam generator level. Upper and lower buckstays are mounted in a cantilever fashion from vertically expanding steam generator furnace walls. A first rigid member extends vertically upward from the lower buckstay and a second rigid hollow member extends vertically downward from the upper buckstay and telescopically engages the first member. The bending moment of each buckstay around its support is resisted by a horizontal force acting between the two vertical members through their telescopic engagement.
Inventors
- 👤 Jr John Mohr Shank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:56
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/10; F22B37/20; F22B37/208
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
163 words
Apparatus for maintaining level the buckstays of a steam generator having a vertically expanding furnace structure, said steam generator having a first buckstay at a lower elevation, a first support supporting said first buckstay from the furnace structure in a cantilever fashion; said steam generator also having a second buckstay at an upper elevation, and a second support supporting said second buckstay from the furnace structure in a cantilever fashion comprising: a first member rigidly fastened to said first buckstay and extending upwardly; an a second member rigidly fastened to said buckstay and extending downwardly and slidably and telescopingly engaging said first member, said telescopic engagement of said first and second members permitting transmission of horizontal force said first and second members at an intermediate elevation between said first and second buckstay elevation; said intermediate elevation being a vertical distance from said first and second supports in inverse proportion to the bending moment of said first and second buckstays around their respective supports.
Claim 2
Dependent Claim
163 words
Apparatus for maintaining level the buckstays of a steam generator having a vertically expanding furnace structure, said steam generator having a first buckstay at a lower elevation, a first support supporting said first buckstay from the furnace structure in a cantilever fashion; said steam generator also having a second buckstay at an upper elevation, and a second support supporting said second buckstay from the furnace structure in a cantilever fashion comprising: a first member rigidly fastened to said first buckstay and extending upwardly; an a second member rigidly fastened to said buckstay and extending downwardly and slidably and telescopingly engaging said first member, said telescopic engagement of said first and second members permitting transmission of horizontal force said first and second members at an intermediate elevation between said first and second buckstay elevation; said intermediate elevation being a vertical distance from said first and second supports in inverse proportion to the bending moment of said first and second buckstays around their respective supports.
Claim 3
Dependent Claim
59 words
Apparatus as in claim 1 wherein said first member comprises a first pipe of circular cross section welded to said first buckstay and extending vertically upward and said second member comprises a second circular pipe having an inner diameter greater than the outer diameter of said first pipe and extending vertically downward in telescopic relation with said first pipe.
Claim 4
Dependent Claim
56 words
Apparatus as in claim 1 wherein said first member comprises a pipe of circular cross section welded to said first buckstay and extending vertically upward and said second member comprises a square tube having an inner flat-to-flat dimension greater than the outer diameter of said pipe and extending vertically downward in telescopic relation to said pipe.
Claim 5
Dependent Claim
35 words
Apparatus as in claim 1 wherein the bending moment of each buckstay around its respective support is equal and the horizontal force is transmitted at an elevation equi-distant from said first and second buckstay elevations.
Claim 6
Dependent Claim
99 words
Apparatus as in claim 1 wherein said first and second buckstays, said first and second supports, and said first and second members comprise a buckstay structure; having also an identical buckstay structure on the opposite side of the furnace structure; buckstay ties connecting each end of the upper buckstay on one side of the furnace to the corresponding end of the upper buckstay on the other side of the furnace; and buckstay ties connecting each end of the lower buckstay on one side of the furnace to the corresponding ends of the buckstay on the opposite of the furnace.
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) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |