Experimental measurement device and method for additional mass matrix between circular and cylindrical members of annular fluid region of reactor

A technology of adding mass and measuring device, applied in the direction of measuring device, testing of machine/structural components, vibration testing, etc., can solve the problems of increasing uncertainty, large difference in results, etc., to increase top weight, save material, increase The effect of safety and durability

Pending Publication Date: 2021-10-19
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

In general, there are few devices for measuring the additional mass matrix in experiments, but in actual experimental measurements, the selection of sensor types and the arrangement of positions have a great influence on the experimental results, and the flui

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  • Experimental measurement device and method for additional mass matrix between circular and cylindrical members of annular fluid region of reactor
  • Experimental measurement device and method for additional mass matrix between circular and cylindrical members of annular fluid region of reactor
  • Experimental measurement device and method for additional mass matrix between circular and cylindrical members of annular fluid region of reactor

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Example Embodiment

[0035] The embodiments will be described in detail below in conjunction with the accompanying drawings.

[0036] Many devices in the fast reactor, such as the main pump, intermediate heat exchanger (IHX), independent heat exchanger (DHX), etc., are closely arranged in the ring area of ​​the reactor body, and these devices are equipped with heat shields and support cylinders. Due to the irregular and tight arrangement of these support cylinders, the fluid-structure coupling effect generated by the fluid and equipment in the fast reactor under seismic conditions needs to be evaluated. At present, the finite element method is generally used to model the specific layout, and the vibration characteristics of the model under some specific working conditions are obtained through numerical simulation to evaluate its fluid-solid coupling effect. The finite element modeling method has a certain reference, but generally lacks experimental verification, and because the gap between the sup...

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Abstract

The invention provides an experimental measurement device and method for an additional mass matrix between circular and cylindrical members of an annular fluid region of a reactor, simplification and scaling are carried out according to a fast reactor model, and five branch circular bearing cylinders are symmetrically placed in a semi-annular region device with an included angle of 180 degrees relative to a main pump bearing cylinder according to a placement relation in a fast reactor body; the semi-annular region device is filled with water, each bearing cylinder is provided with three layers of measuring points, the measuring points are all underwater, and each layer of measuring points is provided with an acceleration sensor and a pressure sensor for measuring acceleration and pressure. A vibration exciter is used for carrying out vibration excitation on each bearing cylinder, and an additional mass matrix is obtained through calculation according to a formula of fluid acting force borne by a plurality of interacting entities in water. According to the invention, the obtained result is more accurate and stable by selecting the sensors and the measuring point positions in a targeted manner. By adopting the measurement mode of the device, the fluid-solid coupling characteristic between adjacent cylinders in a limited drainage basin can be better evaluated.

Description

technical field [0001] The invention belongs to the technical field of nuclear power energy, and in particular relates to an experimental measurement device and method for an additional mass matrix between cylindrical components in an annular fluid domain of a reactor. Background technique [0002] There are many adjacent non-coaxial equipment support cylinders in the reactor body, and the fluid-solid coupling between these support cylinders will increase significantly as the distance between the cylinders decreases. For non-coaxial cylinders, the existing formulas are aimed at the fluid-solid coupling characteristics of a single object in an infinite fluid domain, and the derivation formula for its additional mass is not suitable for the calculation of the fluid-solid coupling parameters of the equipment supports in the stack body. On the one hand, the fluid domain of the stack body is an annular domain, which is inconsistent with the fluid vibration parameters and mode sha...

Claims

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Application Information

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IPC IPC(8): G01M7/02
CPCG01M7/025G01M7/022Y02E30/30
Inventor 陆道纲段德萱刘雨
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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