摘要:
A control rod drive mechanism (CRDM) configured to latch onto the lifting rod of a control rod assembly and including separate latch engagement and latch holding mechanisms. A CRDM configured to latch onto the lifting rod of a control rod assembly and including a four-bar linkage closing the latch, wherein the four-bar linkage biases the latch closed under force of gravity.
摘要:
A nuclear reactor includes a pressure vessel (10), and a control rod assembly including at least one movable control rod (18) comprising a neutron absorbing material, a control rod drive mechanism (CRDM) (14) for controlling movement of the at least one control rod, and a coupling operatively connecting the at least one control rod and the CRDM. The coupling includes a first portion comprising a first material having a first density at room temperature, and a second portion comprising a second material having a second density at room temperature that is greater than the first density. In some embodiments the coupling includes a connecting rod (30) including a hollow or partially hollow connecting rod tube (90) comprising a first material having a first density and a filler (92) disposed in the hollow or partially hollow connecting rod tube, the filler comprising a second material having a second density greater than the first density.
摘要:
A control rod drive mechanism (CRDM) configured to latch onto the lifting rod of a control rod assembly and including separate latch engagement and latch holding mechanisms. A CRDM configured to latch onto the lifting rod of a control rod assembly and including a four-bar linkage closing the latch, wherein the four-bar linkage biases the latch closed under force of gravity.