Spherical fuel flow field and pressure field measurement experiment device

A spherical fuel and experimental device technology, applied in the direction of reducing greenhouse gases, climate sustainability, reactors, etc., can solve the problems of restricting the research and development and design of spherical fuel elements, the thermal and hydraulic properties of spherical fuel elements, etc., to eliminate light path blocking. And the effect of distortion and fine measurement

Pending Publication Date: 2022-02-25
XIAN THERMAL POWER RES INST CO LTD +1
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Problems solved by technology

Therefore, due to the limitations of technical means and complex core structure, the current research on the thermal-hydraulic characteristics of spherical fuel elements mostly stays in the prediction of macroscopic parameters, and some phenomena and mechanisms have not been effectively revealed in essence. These problems restrict R&D and design work on spherical fuel elements

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  • Spherical fuel flow field and pressure field measurement experiment device
  • Spherical fuel flow field and pressure field measurement experiment device

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Embodiment Construction

[0027] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only The embodiments are a part of the present invention, not all embodiments, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concepts disclosed in the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0028] The schematic diagrams of the structures according to the disclosed embodiments of th...

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Abstract

The invention discloses a spherical fuel flow field and pressure field measurement experiment device, which is characterized in that a visual test cylinder is filled with a plurality of PMMA balls, the bottom of the visual test cylinder is provided with a honeycomb plate, the honeycomb plate is connected with the upper end of a corrugated pipe, the lower end of the corrugated pipe is communicated with the upper end of an inlet section, the lower end of the inlet section is closed, a plurality of flow channel inlets are formed in the side face of the inlet section, the top of the visual test cylinder is connected with the outlet section, a flow channel outlet is formed in the side face of the outlet section, an upper sealing head of a transparent structure is arranged at the top of the outlet section, an exhaust hole is formed in the upper sealing head, and the laser directly faces the side face of the visual test cylinder. A first CCD high-speed camera directly faces the upper sealing head, and a second CCD high-speed camera directly faces the side face of the visual test cylinder; according to the device, light path shielding and distortion in the pebble bed fuel element are eliminated, and fine measurement of a flow field is achieved.

Description

technical field [0001] The invention belongs to the technical field of fluid mechanics and nuclear reactor thermal hydraulics, and relates to an experimental device for measuring spherical fuel flow field and pressure field. Background technique [0002] The core fuel element is the core of the reactor, and its performance is directly related to the safe operation of the reactor. Graphite is used as the matrix material, and the internally dispersed TRISO (Tristructural-isotropic) fuel particles have the characteristics of high temperature resistance, and can still ensure that the fission products are confined inside the fuel ball at 1600 ° C, preventing the outward diffusion of radioactive substances. This fuel technology effectively improves the inherent safety of the reactor, and its high temperature resistance enables the reactor to obtain a higher coolant outlet temperature, further laying the foundation for improving the system's operating efficiency and economic level....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C17/08G21C17/10
CPCG21C17/08G21C17/10Y02E30/30
Inventor 祁沛垚张瑞祥马晓珑武方杰马晨常重喜叶林于德李超于爱军刘军强陈光辉张彬
Owner XIAN THERMAL POWER RES INST CO LTD
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