Measuring apparatus for the coolant outlet temperature in nuclear-reactor fuel elements

Claim 1

A NUCLEAR REACTOR HAVING A FLUID PRESSURE CHAMBER IN WHICH A FUEL ELEMENT IS SUSPENDED BY A TUBULAR ATTACHMENT ROD EXTENDING FROM THE OUTSIDE OF SAID CHAMBER DOWNWARDLY TO ITS INSIDE, SAID ELEMENT HAVING AN ATTACHMENT HEAD TO WHICH THE LOWER END OF SAID ROD IS ATTACHED AND SAID HEAD HAVING A PASSAGE EXTENDING DOWNWARDLY THERETHROUGH AND ALIGNED WITH THE INSIDE OF SAID ROD, AND FROM WHICH HEAD AN ELONGATED ENCLOSURE DEPENDS AND WHEREIN SPACED BELOW SAID HEAD AND WITHIN SAID ENCLOSURE A FUEL ROD SUPPORT PLAE IS POSITIONED FROM WHICH A MULTIPLICITY OF FUEL RODS DEPEND, SAID HEAD FORMING A COOLANT INLET FOR SAID ENCLOSURE AND THE ENCLOSURE''S BOTTOM END BEING OPEN FOR DOWNWARD FLOW OF COOLANT THERETHROUGH, A GUIDE TUBE HAVING AN INSIDE ALIGNED WITH THE LOWER END OF SAID HEAD''S AND DEPENDING FROM SAID HEAD THROUGH SAID SUPPORT PLATE AND SAID FUEL RODS TO BELOW THE LOWER ENDS OF THE FUEL RODS, SAID GUIDE TUBE HAVING A BOTTOM END POSITIONES WITHIN SAID DOWNWARD FLOW OF COOLANT, MEANS FOR TRANSMITTING INFORMATION ABOUT SAID COOLANT AT SAID GUIDE TUBE''S BOTTOM END EXTENDING UPWARDLY THROUGH SAID GUIDE TUBE AND SAID ATTACHMEN HEAD AND SAID ATTACHMENT ROD TO THE OUTSIDE OF SAID FLUID PRESSURE CHAMBER WHICH RANSMITTING MEANS CAN BE SLIDABLE INSERTED INTO AND WITHDRAWN FROM SAID CHAMBER, AND MEANS FOR PREVENTING THE ESCAPE OF FLUID FROM SAID PRESSURE CHAMBER VIA SAID GUIDE TUBE, ATTACHMENT HEAD AND ATTACHMENT ROD.