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Fretting wear test device and system

A fretting wear and test device technology, applied in the direction of applying repetitive force/pulsation force to test material strength and test wear resistance, can solve problems such as easy failure and unfavorable test, and achieve the effect of positive pressure stability

Active Publication Date: 2020-05-22
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing high-temperature fretting wear test devices often use springs as the loading method in the corrosive solution environment, but this loading method is prone to failure, which is not conducive to long-term tests

Method used

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  • Fretting wear test device and system
  • Fretting wear test device and system
  • Fretting wear test device and system

Examples

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Embodiment approach

[0054] A tangential fretting wear test device for simulating the environment of a sodium-cooled reactor, including a container cover 2 of liquid sodium, through which the bolt 1 is fixed by the support, and the support 23 is fixed on the container cover 2 under the action of the positioning sleeve 7, and the upper moving head The positioning plate 24 and the lower moving head positioning plate 30 connect the two pillars 23 . The movement rod 3 runs through the container cover 2 of liquid sodium, and is connected by the movement head assembly 4 , the upper movement head positioning plate 24 and the lower movement head positioning plate 30 . The displacement measuring element is composed of LVDT chuck 18 , LVDT piece 19 and LVDT iron core 21 , wherein the LVDT chuck 18 is fixedly connected to the moving rod 3 , and the LVDT iron core 21 is fixedly connected through the fixed plate 20 and the sealing ring cover plate 17 . sports bar 3 and figure 2 The moving head assembly 4 sho...

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Abstract

The invention provides a fretting wear testing device, comprising a frame assembly, a tube sample assembly, and a plate sample assembly. The tube sample assembly and the plate sample assembly are bothmounted on the frame assembly. The frame assembly comprises pillars and a moving head positioning plate. A plurality of pillars comprises a first pillar and a second pillar. The tube sample assemblycomprises a tube sample and a tube fixing device. The plate sample assembly comprises an anti-vibration strip sample and a moving head assembly. Two ends of the tube fixing device extending along thelength and two ends of the moving head positioning plate extending along the length are respectively mounted on the first pillar and the second pillar. The moving head assembly is connected to the moving head positioning plate. The tube sample and the anti-vibration strip sample are respectively mounted on the tube fixing device and the moving head assembly. The invention further provides a fretting wear testing system. The invention adopts the lever loading method instead of the spring loading to avoid the loading failure in the high corrosive environment, and can realize the fretting wear test in the sodium solution environment.

Description

technical field [0001] The invention relates to the field of mechanical engineering, in particular to a fretting wear test device and system, in particular to a tangential fretting wear test device and system for simulating a sodium-cooled reactor environment. Background technique [0002] Fretting refers to the relative motion of two contact surfaces with a very small amplitude (usually the amplitude is less than 300 μm) under the action of external vibration or fatigue stress. As one of the fourth-generation advanced nuclear reactors, sodium-cooled fast reactors also face problems caused by fretting. The intermediate heat exchanger and steam generator of the sodium-cooled fast reactor are the main equipment of the fast reactor, which is the interface between the reactor sodium pool and the steam circuit. During the operation of the heat exchanger, the heat transfer tube generates flow-induced vibration due to the instability of the medium flow, resulting in fretting wear ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/34G01N3/56
CPCG01N3/34G01N3/56
Inventor 郭相龙张乐福赖平
Owner SHANGHAI JIAOTONG UNIV
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