Guiding device for reactor control rod bundle

Abstract

The invention relates to a guiding device for a reactor control rod bundle. The guiding device for the reactor control rod bundle is characterized by comprising a shell and a core body arranged insidethe shell, wherein the core body comprises a bottom plate, a plurality of integrated guiding plates, a plurality of integrated guiding pipes and a plurality of fixing plates; the integrated guiding plates are longitudinally arranged on the bottom plate and are oppositely arranged; the integrated guiding pipes are longitudinally arranged on the bottom plate, are spaced from the guiding plates andare parallel to one another; the fixing plates are arranged on the guiding plates and the guiding pipes longitudinally at intervals in a sleeving manner, are used for fixing the guiding plates and theguiding pipes, and carries out total travel guiding on the control rod bundle, the circumstance that the control rod bundle is blocked or even jammed when passing through the guiding plates or / and the guiding pipes is avoided, abrasion of the control rod bundle is relieved, and an anti-rotation function of a lead screw roller nut type driving mechanism at any point in a process of lifting the control rod bundle can be fulfilled; and thus, collision friction between the control rod bundle and the guiding device is prevented, and safety control on a reactor is enhanced.

Description

technical field [0001] The invention relates to the technical field of nuclear power, in particular to a guiding device for a reactor control rod bundle. Background technique [0002] Control rod bundles are made of neutron-absorbing materials such as boron and cadmium. There is a set of mechanical devices outside the nuclear reaction pressure vessel to manipulate the control rod bundle. When the control rod bundle is fully inserted into the reaction center, it can absorb a large number of neutrons to prevent the fission chain reaction from proceeding. If the control rod bundle is pulled out a little, the reactor will start to run, and the speed of the chain reaction will reach a certain stable value; if you want to increase the energy released by the reactor, you only need to pull out the control rod bundle a little more, so that the absorbed neutrons will decrease , more neutrons participate in the fission reaction. To stop the chain reaction, insert the control rod bun...

AI Technical Summary

Problems solved by technology

This form of guiding device will cause jamming or even jamming when the control rod bundle passes through the element and cuts the pipe, especially on a ship with swaying conditions, which will cause wear to the control rod bundle, and this guiding device Suitable for magnetic lift type drive mechanism, not suitable for screw roller nut type drive mechanism

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