Device for securing a blanket module to a fusion reactor vacuum vessel

Abstract

The invention relates to the field of thermonuclear fusion and can be used in devices for securing a blanket module to the vacuum vessel of a fusion reactor. A device for securing a blanket module toa fusion reactor vacuum vessel comprises a flexible support in the form of rods that are mounted between two flanges, a displacement compensator, and a threaded fastening member in the form of a locknut with a male thread. The displacement compensator is mounted on the flange of the flexible support which is oriented towards the module, said flange having a concave spherical surface, and is rigidly connected to the blanket module, wherein the displacement compensator comprises a locking screw and a supporting sleeve, which are pivotally interconnected, a spacer sleeve, and a coupling sleeve with a spherical protuberance. The spacer sleeve is movably connected to the locking screw and has a convex spherical surface and a concave spherical surface, which form a pivot connection to the flangeof the support and to the spherical protuberance of the coupling sleeve respectively. The coupling sleeve is rigidly connected to a stop surface of the locknut. The technical result of the present invention is an increase in the permissible amount of tension force in the threaded joint between the flexible support and the module, which increases the load-bearing capacity of the device, prevents possible weakening of the threaded joint by virtue of self-locking ability, and provides for self-compensation of angular and axial displacements occurring as the module is mounted on the vacuum vessel.

Description

technical field [0001] The invention relates to the field of thermonuclear fusion, in particular to a device for fixing a cladding module to a fusion reactor vacuum chamber. Background technique [0002] The known means for fixing the cladding module to the vacuum chamber of a fusion reactor consist of a flexible hollow support in the form of a rod designed to fit between two flanges, one of which couples the support with the vacuum chamber , the other flange is connected to the vacuum chamber by a threaded fastener with a locking sleeve fixed inside the cladding module by deformation (Russian Patent No. 2563975, IPC G21Bl / 17, publication date September 2015 27). [0003] This known device comprises: the above-mentioned threaded fastener, which is a bolt whose head is located in a cavity of a flexible support; and a threaded part, which is fixed in a screw hole in said cladding module. The locking sleeve is made of two separate elements rigidly interconnected along conical...

AI Technical Summary

Problems solved by technology

[0011] A disadvantage of the known device for fastening cladding modules to the fusion reactor vacuum chamber described above is that the threaded connection between the bolts and the cladding modules weakens during the cyclic operation of the fusion reactor

The reason for this is the lack of a stop, and the screw restriction in its place would hinder the threaded connection, making it impossible to use a stop

Another disadvantage of this known device is the small section of the shank of the bolt caused by the inner mounting hole, so that the permissible torque values ​​for the screwed connection of the flexible support and the cladding module are limited

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