US3812907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchangers
Assignee: United Kingdom Atomic Energy Authority
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Filing: 1972-05-08
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Granted: 1974-05-28
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Expires: 1992-05-08
Abstract
Abstract In a tube-in-shell heat exchanger, each tube plate is secured along its outer edge to the shell of the heat exchanger by an intermediate annular member extending across a gap between the outer edge of the tube plate and the shell, the radial crosssection of the annular member being of arched form. Thermal insulation for the tube plates consisting of a series of plate members edge on to the tube plate and arranged parallel one to another between successive rows of the heat exchanger tubes, is also described.
Inventors
- 👤 D Linning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:05
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/0219; Y; Y10; Y10S; Y10S165/00; Y10S165/051; Y10S165/052; Y10S165/06; Y10S165/061
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
116 words
In a tube-in-shell heat exchanger in which a bundle of parallel heat exchanger tubes extend between tube plates at either end of the bundle, said tubes being connected with holes in the tube plates, and a shell within which said bundle of tubes is disposed with means for securing said tube plates to said shell, the improvement wherein said means for securing each tube plate to said shell comprises an annular member intermediate each said tube plate and said shell, said member being secured to the outer edge of the respective tube plate and to said shell to extend across a gap therebetween, and the radial cross section of said annular member being of arched form.
Claim 2
Dependent Claim
116 words
In a tube-in-shell heat exchanger in which a bundle of parallel heat exchanger tubes extend between tube plates at either end of the bundle, said tubes being connected with holes in the tube plates, and a shell within which said bundle of tubes is disposed with means for securing said tube plates to said shell, the improvement wherein said means for securing each tube plate to said shell comprises an annular member intermediate each said tube plate and said shell, said member being secured to the outer edge of the respective tube plate and to said shell to extend across a gap therebetween, and the radial cross section of said annular member being of arched form.
Claim 3
Dependent Claim
18 words
A heat exchanger according to claim 1, characterised by the radial cross section of said member being semi-circular.
Claim 4
Dependent Claim
46 words
A heat exchanger according to claim 2, characterised in that said annular member is arranged so that its inner and outer edges are substantially in the plane in which the respective tube plate lies and are joined with said tube plate and said shell by welding.
Claim 5
Dependent Claim
17 words
A heat exchanger according to claim 1, characterised by said annular member being made of laminated form.
Claim 6
Dependent Claim
47 words
A heat exchanger according to claim 1, characterised by said tube plates each having thermal insulation comprising a series of individual and mutually isolated plate members edge on to the respective tube plate and arranged parallel to one another between successive rows of the heat exchanger tubes.
Claim 7
Dependent Claim
22 words
A heat exchanger according to claim 5, characterised by said plate members being plane for extending in straight runs between said tubes.
Claim 8
Dependent Claim
26 words
A heat exchanger according to claim 5, characterised by said plate members being of convoluted form for extending between said tubes where these are closely pitched.
Claim 9
Dependent Claim
35 words
A heat exchanger according to claim 5, characterised by said plate members being supported from their ends by a ring mounted on the face of the respective tube plate and encircling said heat exchanger tubes.
Claim 10
Dependent Claim
39 words
A heat exchanger according to claim 1 wherein the inner periphery of said annular arched member is secured to the outer edge of the respective tube plate, and the outer periphery of said member is secured to 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) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |