Local Positioning Structure for Reactor Electric Heating Simulation Rod Bundle

Abstract

The invention discloses a local positioning structure for reactor electric heating simulation rod bundles, which comprises several electric heating rods arranged parallel to each other. The rods are fixed as an integral structure, and the winding ribs on each electric heating rod are in contact with the adjacent electric heating rods or the winding ribs on the adjacent electric heating rods. The present invention adopts the overall processing technology of rib winding and electric heating rod, which has high mechanical strength, strong erosion resistance, low production technical difficulty and low cost, is suitable for mass production, and improves positioning reliability; rib winding and electric heating rod bundle adopt The same material avoids additional stress caused by the difference in thermal expansion of heterogeneous materials, improves the structural stability of the ribs, and ensures the functional characteristics of the ribs during the test cycle; the self-positioning method does not require additional additional structures , which reduces the difficulty of assembling the experimental body; for different specifications of electric heating simulation components, the positioning function is realized by adjusting the geometric parameters of the ribs.

Description

technical field [0001] The invention relates to a positioning structure for a reactor electric heating simulation rod bundle, in particular to a local positioning structure for a reactor electric heating simulation rod bundle. Background technique [0002] The electric heating rod bundle of the reactor component is an important simulation part for the thermal hydraulic characteristics of the fuel assembly in the ex-reactor experiment. Distribution, flow heat transfer experiments, rod bundle channel mixing characteristics experiments, etc. [0003] As an important fuel assembly simulation part, the electric heating rod bundle uses direct current or alternating current to heat the metal tube. The metal tube with the same current flow may be bent and deformed under the action of the ampere force. In addition, the electric heating rod is in the high temperature fluid. In the washdown environment, there may be errors in processing, installation, and positioning. Under the influ...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the processing of the local positioning structure of the electric heating rod bundle is difficult, the realization cost is high, or the influence on the flow field is obvious, which is not conducive to the study of the experimental characteristics of the light rod. Reactor electric heating simulates the local positioning structure of the rod bundle. This local positioning structure can realize the radial positioning of the electric heating rod bundle, maintain the overall structure and shape of the electric heating rod bundle, and will not significantly affect the flow field. It meets the research requirements of experimental characteristics, and has simple structure, reliable performance, not easy to fall off, low cost, and can realize self-positioning

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