US3988203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control assembly of a nuclear reactor
Assignee: Individual
•
Filing: 1974-05-10
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Granted: 1976-10-26
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Expires: 1994-05-10
Abstract
Abstract The control assembly of a nuclear reactor according to the invention comprises a sleeve stationarily mounted in the fuel core of the reactor and accommodating a casing movable therein. The casing accommodates two superposed concentric sections formed by fuel and absorbing elements, respectively. Approximately at the boundary between the sections, the casing is provided with openings adapted to remove a part of a cooling medium flowing around said sections and into a space formed between the casing and sleeve. In order to control the flow rate of this part of the cooling medium, depending on the position of the casing relative to the fuel core of the reactor, a throttle means disposed in the zone of the section formed by the absorbing elements is provided.
Inventors
- 👤 Nikolai Grigorievich Kuzavkov
- 👤 Vladimir Vasilievich Pakhomov
- 👤 Ivan Ivanovich Prin
- 👤 Alexandr Sergeevich Shabalin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:34
CPC Classifications
G; G21; G21C; G21C15/00; G21C15/02; G21C15/04; G21C15/06; G21C3/00; G21C3/30; G21C3/32; G21C3/322; G21C3/326; G21C7/00; G21C7/06; G21C7/08; G21C7/10; G21C7/103; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
219 words
In a nuclear reactor having a fuel core, a control assembly, and a coolant comprising: a guide sleeve fixedly mounted in said fuel core and having an inlet and an outlet for circulating coolant; a casing arranged coaxially in said guide sleeve and movable telescopically therein, and having an inlet and an outlet for circulating coolant; a space defined between said casing and said guide sleeve; two vertically superposed sections in said casing; fuel elements forming said first section; absorbing elements forming said second section; at least one opening in the casing approximately at the boundary between said sections, said opening providing for the removal of part of said coolant from said casing into said space between the casing and the guide sleeve; and throttle means on said casing in said space between the casing and the guide sleeve in the zone of said second section formed by absorbing elements, said throttle means being movable with said casing, said throttle means providing full throttling when said throttle means is completely within said guide sleeve and providing less throttling when it is partially withdrawn from said guide sleeve into a region above said outlet said throttle means ensuring control of the flow of said coolant through said space depending on the position of said casing relative to said fuel core.
Claim 2
Dependent Claim
219 words
In a nuclear reactor having a fuel core, a control assembly, and a coolant comprising: a guide sleeve fixedly mounted in said fuel core and having an inlet and an outlet for circulating coolant; a casing arranged coaxially in said guide sleeve and movable telescopically therein, and having an inlet and an outlet for circulating coolant; a space defined between said casing and said guide sleeve; two vertically superposed sections in said casing; fuel elements forming said first section; absorbing elements forming said second section; at least one opening in the casing approximately at the boundary between said sections, said opening providing for the removal of part of said coolant from said casing into said space between the casing and the guide sleeve; and throttle means on said casing in said space between the casing and the guide sleeve in the zone of said second section formed by absorbing elements, said throttle means being movable with said casing, said throttle means providing full throttling when said throttle means is completely within said guide sleeve and providing less throttling when it is partially withdrawn from said guide sleeve into a region above said outlet said throttle means ensuring control of the flow of said coolant through said space depending on the position of said casing relative to said fuel core.
Claim 3
Dependent Claim
25 words
The control assembly according to claim 1, wherein said throttle means is made in the form of projections on the outer surface of said casing.
References Cited (Backward Citations)
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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) | 1979-10-26 | 1980-04-26 | 1980-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-26 | 1984-04-26 | 1984-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-26 | 1988-04-26 | 1988-10-26 | $7700.00 | Window Closed / Lapsed |