Thermally activated trigger device

Patent · Tue Aug 09 00:00:00 EDT 1988

OSTI ID:6531932

Harty, R B; Camaret, T L

This patent describes a nuclear space reactor, a thermally activated trigger device for rendering the reactor subcritical upon reentry to the earth's atmosphere, the device comprising: a closed vessel, a piston slideably mounted in the vessel to divide it into first and second compartments, an inert gas contained within each of the compartments at substantially the same pressure, a connecting rod operatively connected to the piston and to actuator means, the actuator means providing for moving means for rendering the reactor subcritical upon movement of the connecting rod; a bellows having opposite ends, one of the ends being affixed to and in sealing engagement with the connecting rod and the other of the ends being affixed to and in sealing engagement with the vessel for permitting linear movement of the connecting rod and preventing any escape of the inert gas from the closed vessel; and normally closed pipes communicating with one of the compartments for venting the inert gas therefrom when any of the pipes is open, the pipes being located at different parts of the nuclear space reactor so that the closed ends thereof are exposed to the atmosphere upon reentry of the reactor to the atmosphere. The pipes are designed to open at a selected temperature resulting from the reentry so that the gas leaves the communicating compartment via an open pipe to cause a difference in pressure between the compartments sufficient for the higher pressure in the other compartment to move the piston and thereby activate the actuator means.

• Assignee: Rockwell International Corp., El Segundo, CA
• Patent Number(s): US 4762662
• Application Number: TRN: 89-003513
• OSTI ID: 6531932
• Resource Relation: Patent File Date: Filed date 31 Oct 1985
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
SPACE POWER REACTORS
EQUIPMENT PROTECTION DEVICES
DESIGN
GAS FLOW
PIPES
REACTOR CONTROL SYSTEMS
REACTOR SAFETY
REENTRY
SUBCRITICALITY
TEMPERATURE DEPENDENCE
THERMODYNAMICS
CONTROL SYSTEMS
FLUID FLOW
MOBILE REACTORS
POWER REACTORS
REACTORS
SAFETY
NESDPS Office of Nuclear Energy Space and Defense Power Systems
220900* - Nuclear Reactor Technology- Reactor Safety
210600 - Power Reactors
Auxiliary
Mobile Package
& Transportable