Device for remote transmission control on reactivity of reactor

Abstract

The invention discloses a device for remote transmission control on reactivity of a reactor. The device comprises a driving mechanism, a transmission shaft and a control drum, wherein the output shaftand the transmission shaft of the driving mechanism are sequentially connected with the control drum; an outer sleeve is arranged outside the transmission shaft; the driving mechanism and the controldrum are respectively provided with shells; and both the shell of the driving mechanism and the shell of the control drum are connected with the outer sleeve in a sealed manner to form sealed spaces.The device has the beneficial effects that a mechanical structure is adopted to remotely control rotation of the control drum, then the reactor can be remotely controlled with high reliability, and radiation interference can be avoided. The outer sleeve of the transmission device is filled with a protection gas, a transmission component, bearings and the like are operated in an inert gas environment, and reliable performance of operation components can be ensured. A transmission rod is connected with the combination of a universal joint coupling and a spline, and thus angle deviation betweena power output shaft and the rotating shaft of the control drum and axial stretching and withdrawing caused by temperature change can be compensated.

Description

technical field [0001] The invention relates to nuclear industry machinery, in particular to a long-distance transmission control reactor reactivity device. Background technique [0002] The reactor's control drum is composed of neutron-absorbing and neutron-reflecting materials. By turning the rotation angle of the control drum on the periphery of the core, the position of the neutron reflective material and neutron absorber material relative to the core is changed, thereby adjusting the reactivity of the reactor. [0003] When the neutron absorbing material 2 on the control drum is towards the position of the core 3, it is to suppress the continuous fission state of the nuclear fuel of the reactor (such as figure 1 shown). When the neutron reflective material 1 on the control drum is towards the position of the core 3, it is to promote the continuous fission state of the reactor nuclear fuel (such as figure 2 shown). [0004] In order to meet the long-distance control...

AI Technical Summary

Problems solved by technology

This approach is not advisable in the field of nuclear power engineering, because radiation will affect signal transmission, resulting in control failure and accidents

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