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Accelerator driven sub-critical system split type central measuring cylinder system

An accelerator-driven, measuring column technology, used in reactors, nuclear reactor monitoring, greenhouse gas reduction, etc., can solve the problems of increasing the complexity of the refueling route and the refueling system, increasing the circulation pressure drop, and decreasing the flow rate, etc., to increase the natural circulation flow rate. , the effect of reducing the cycle height and reducing the capacity

Active Publication Date: 2013-05-08
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology

Since the space above 2 meters at the bottom of the pile needs to inject hundreds of tons of liquid lead and bismuth, it is feasible to use forced convection to drive the flow of lead and bismuth. If natural circulation is used, as the core height increases, the circulation pressure drop increases and the flow rate decreases. Or the cycle is interrupted, and the refueling route from the lower part of the stack increases the complexity of the refueling system

Method used

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  • Accelerator driven sub-critical system split type central measuring cylinder system
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  • Accelerator driven sub-critical system split type central measuring cylinder system

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Embodiment Construction

[0019] The following describes the specific implementation of the split central measuring column with reference to the figures.

[0020] Such as Figure 1~3 As shown, the accelerator-driven subcritical reactor split central measuring column system includes a large cock 1, a small cock 2, and a reactor roof support neck 3, which are welded to the main sector 4 of the central measuring column under the large cock and welded to the lower center of the small cock The measuring column is divided into sectors 5, core 6, seven control rod driving mechanisms 11 on the large cock, proton beam tube 9, measuring conduit 8, single control rod driving mechanism 10 on the small cock and refueling machine 7. The large cock 1 is installed in the center of the stack top cover, the small cock 2 is eccentrically installed on the large cock 1, the refueling machine 7 is eccentrically arranged on the small cock 2, and the proton beam tube 9 runs through the center of the large cock and extends to ...

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Abstract

The invention provides an accelerator driven sub-critical system split type central measuring cylinder system which mainly comprises large and small plugs, a central measuring cylinder main fan-shaped section welded below the large plug, a central measuring cylinder branched fan-shaped section welded below the small plug, a control rod driving mechanism, a proton beam tube, a measuring guide tube, a refueling machine and the like, wherein the large plug is positioned in the center of a system top cover; the small plug is screwed to the large plug and is eccentric to the large plug; the refueling machine is arranged on the small plug and is eccentric to the small plug; and the proton beam tube penetrates through the center of the large plug. During system operation, the lower fan-shaped sections of the large and small plugs are closed to form the central measuring cylinder, the lower fan-shaped section of the small plug rotates during refueling, so that the refueling mechanism enters the system to replace a fuel component. The system mainly aims at an accelerator driven lead bismuth cooling rapid neutron transmutation system, and the problem that the system core refueling is obstructed by the integrated central measuring cylinder is solved.

Description

technical field [0001] The invention belongs to the technical field of radioactive nuclear waste treatment, and in particular relates to an accelerator-driven subcritical reactor (Accelerator Driven Sub-critical System, ADS) split-type central measuring column system, involving an accelerator-driven subcritical reactor central measuring column, a cock system and a refueling system. Background technique [0002] Nuclear waste treatment, especially the final treatment of long-lived nuclear waste is a worldwide problem. The "separation-transmutation" method is a new way of nuclear waste treatment, that is, to separate MA and LLFP from high-level radioactive waste through chemical separation. , Using nuclear reaction devices (such as reactors, accelerators) to transform long-lived nuclides into short-lived nuclides or stable nuclides. The Accelerator Driven Sub-critical System (ADS) is currently an ideal device dedicated to the transmutation of radioactive nuclear waste, the ef...

Claims

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Application Information

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IPC IPC(8): G21C19/20G21C17/10
CPCY02E30/30
Inventor 汪卫华何梅生姚曦柏云清曾梅花
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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