A burnup measurement locator for high temperature gas-cooled reactor

Abstract

The invention provides a burnup measuring and positioning device applied to a high-temperature gas cooled reactor. The burnup measuring and positioning device applied to a high-temperature gas cooled reactor comprises a power component, a magnetic driver, a box body component, a rotor component and a shield, wherein the box body component consists of a box body as well as a ball charge pipe and a ball discharge pipe which are welded on the box body and are coaxial and equal in diameter; the box body is provided with a ball passing through hole, a rotor counter bore and a collimation counter bore; the ball passing through hole has the diameter of 61mm; one ends, which are communicated with the ball passing through hole, of the ball charge pipe and the ball discharge pipe are reducing sections; the rotor component comprises a rotor and bearings; a rotary drum of the rotor is provided with a ball passing through hole and a ventilation hole; the top of the ventilation hole is provided with a conical surface ball stop socket, and the bearings are made by heat-resistant and abrasion-resistant alloy; the power component consists of an alternating-current servo motor with a rotary transformer and a planetary gear speed reducer. The burnup measuring and positioning device provided by the invention can start and stop frequently and perform receiving, ball stopping, positioning and measurement and transmitting rapidly, stably and accurately, is compact in structure, and can guarantee the reliability requirement of long-time running.

Description

technical field [0001] The invention relates to reactor engineering, in particular to a burnup measurement positioner applied to high-temperature gas-cooled reactors. Background technique [0002] The pebble bed high-temperature gas-cooled reactor uses spherical fuel elements to pass through the core multiple times to realize non-stop continuous operation. Each spherical fuel element unloaded from the core enters the burnup measurement positioner set on the unloading pipeline, and after turning to the burnup measurement point, it is burned up through the corresponding burnup measurement system outside the pipeline Measure to ensure that the spent fuel elements that have reached the target burnup are discharged to the spent fuel system; or identify specific types or burnup spherical elements, and then transport them to the target location for detection or research. [0003] The burnup measurement locator is the core equipment in the fuel handling system, and it is also the k...

AI Technical Summary

Problems solved by technology

The lifter consists of a large-diameter distribution plate, a housing with three pairs of through holes, a magnetic drive and power components. There is a vent hole with a ball cup on the distribution plate for receiving and positioning spherical elements. The housing’s The three pairs of through holes all include ball holes and vent holes. The power components are composed of stepper motors, cycloidal pinwheel reducers and rotary encoders. The lifter has technical problems such as ball jamming and positioning drift. The cycle and loading and unloading of components are small, and the influence of the cumulative dose of gamma rays is not considered

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