Rod bundle channel flow pressure measurement experimental device

Abstract

The invention provides a rod bundle channel flow pressure measuring test device, which comprises a water storage tank, a pressure measuring body, and a centrifugal pump, a regulating valve and a thermometer sequentially connected with the water storage tank through a pipeline, wherein the pressure measuring body comprises a rod bundle channel barrel, a rod bundle channel formed by rod bundles arranged in the rod bundle channel barrel; the upper ends of the rod bundles are connected with a high-accuracy rotating disk arranged on a rotating table support through a coupler; two body pressure ports formed up and down are formed in the rod bundle channel barrel; a pressure guiding port is formed in each rod bundle of the rod bundle channel; a sealing rubber plug is arranged at the lower end of each rod bundle; a fast adapter is arranged at the upper end of each rod bundle; pressure difference transmitters are respectively arranged between each pressure guiding port and each fast adapter as well as between the two body pressure ports. The rod bundle channel flow pressure measuring test device provided by the invention can simulate single-phase flow in a reactor rod bundle channel so as to research a resistance characteristic of the rod bundle channel, and is simple in structure, low in cost, accurate and convenient to acquire data, and wide in research working condition range.

Description

technical field [0001] The invention relates to a flow pressure measurement experiment device of a rod bundle channel, which is applied to the measurement of the pressure loss along the rod bundle channel and the anisotropic pressure distribution caused by the positioning grid, and mainly involves fluid mechanics, reactor thermal hydraulics , nuclear safety and other technical fields. Background technique [0002] The rod bundle channel is an atypical flow channel, and the study of the pressure distribution of the fluid in the atypical channel can deepen the research on the resistance mechanism of the spacer grid. As an important part of the PWR fuel assembly, the spacer grid has two parts, which are the frictional resistance along the way (friction resistance) and the local shape resistance (shape resistance). Due to the influence of the spacer grid, the rod The increase of frictional resistance and shape resistance in the bundle channel increases the pressure drop in the ...

AI Technical Summary

Problems solved by technology

Traditional pressure measurement experimental devices can usually only analyze the resistance characteristics in the channel by measuring the pressure drop along the channel, but it is difficult to measure the pressure distribution of each sub-channel without disturbance

Therefore, there is a need for an experimental device that can not only overcome the lack of accuracy of numerical simulation results, but also optimize the current situation that traditional pressure measuring devices can only measure the pressure drop along the rod bundle channel.

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