Spherical fuel element disintegration device

A spherical fuel element and electrolytic cell technology, which is applied in nuclear engineering, radioactive purification, etc., can solve the problems of being unsuitable for shielding rooms and unable to obtain the position information of coated particles, etc., and achieves easy remote control, avoiding interference and pollution, and compact equipment Effect

Active Publication Date: 2016-07-13
TSINGHUA UNIV
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  • Abstract
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Problems solved by technology

The electrochemical disintegration method has mild conditions and is easy to control, but the position information of the coated particles cannot be obtained in the above two patent documents, and it is not suitable for remote operation by manipulators in a closed shielded room, such as a heat chamber or a glove box

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Embodiment Construction

[0014] The spherical fuel element dismantling device that the present invention proposes, its structure is as follows figure 1 As shown, it includes a base 1, a door-shaped column 2, a rotating motor 3, a lifting module 7, a rotating module 8, a cantilever bracket 4, an electrolytic cell 6, a screw motor 7, a scale 9, a mesh cathode 10, a ball screw 11, Screw nut 12, sliding seat 13, fixture 14, connecting frame 15, DC power supply 16, limit switch 17, guide rail 18, opening groove 19. One side of the door-shaped column 2 is fixed on the base 1, and the column has an open groove 19, and the rotating module 8 is relatively fixed with the other side of the door-shaped column 2. The short arm of the cantilever bracket 4 is linked with the output shaft of the rotary module 8 . Rotating motor 3 is fixed on the end of the long arm of cantilever support 4 . The lifting module 7 is fixed on the upper or lower part of one side of the door column 2 . The electrolytic cell 6 is relati...

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Abstract

The invention relates to a spherical fuel element disintegration device, and belongs to the technical field of nuclear fuel element aftertreatment.The device comprises a base, a door-shaped stand column, a first rotating motor, a second rotating motor, a cantilever support, an electrolytic cell, a lead screw motor, a mesh cathode and the like.One side of the door-shaped stand column is fixed on the base, the second rotating motor is relatively fixed with the other side of the door-shaped stand column, the short arm of the cantilever support is in linkage with an output shaft of the second rotating motor, the first rotating motor is fixed at the end of the long arm of the cantilever support, the lead screw motor is fixed on the lower portion of one side of the door-shaped stand column, the electrolytic cell is relatively fixed with a nut through a sliding seat, and the mesh cathode in the electrolytic cell is connected with a negative pole.The spherical fuel element disintegration device is compact in structure, convenient to operate, prone to achieve remote control and very beneficial for breakage mechanism research of coated particles in fuel elements subjected to irradiation or heat treatment and analysis of burnup and fission products, interference and contamination among samples of various batches are effectively avoided.

Description

technical field [0001] The invention relates to a spherical fuel element dismantling device, which belongs to the technical field of nuclear fuel element reprocessing. Background technique [0002] High-temperature gas-cooled reactor (HTGR) has attracted the attention of countries all over the world, especially developing countries, because of its inherent safety, high power generation efficiency, and wide range of applications. It is expected to be widely used as one of the fourth-generation advanced reactor types. The high-temperature gas-cooled reactor belongs to the modular pebble bed reactor, and its spherical fuel element has a diameter of 60 mm. It is made of coated fuel particles (about 0.92 mm in diameter) and matrix graphite powder and mixed and pressed into fuel core balls (50 mm in diameter). A 5mm-thick matrix graphite shell is pressed outside the fuel core ball, and each ball contains about 5-7g of uranium. Spherical fuel elements run in the high temperature g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21F9/28
CPCG21F9/28
Inventor 陈晓彤卢振明赵宏生刘兵唐春和朱钧国
Owner TSINGHUA UNIV
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