Tube-plate contact type fretting wear clamp of high-temperature high-pressure water and using method

Abstract

The invention belongs to the field of machining clamps, relates to a clamp for fretting wear, in particular to a tube-plate contact type fretting wear clamp of high-temperature high-pressure water anda using method, and solves the problems of fastening and parallelism between friction pairs in a tube / plate contact fretting wear experiment under the condition of high-temperature and high-pressurewater. The clamp is provided with: a fixed clamping plate, a plate-shaped sample clamp fixing plate, a screw rod, a plate-shaped sample clamp, a baffle, a transverse shaft transmission rod, a connecting stud, a fastening nut of the connecting stud, a tubular sample fixing base, an arc-shaped fastening clamping block, a plate-shaped sample clamp fixing plate bracket, fastening screws, fastening nuts and the like, and can be used for carrying out a tube / plate contact fretting wear experiment in high-temperature and high-pressure water. According to the clamp, the problem that it is difficult toguarantee the tightness and parallelism between friction pairs at the same time in a tube / plate contact type fretting wear experiment is solved, the accuracy and repeatability of the experiment are effectively improved, and the clamp is simple in structure, convenient to operate and low in cost.

Description

technical field [0001] The invention belongs to the field of processing fixtures, and relates to a fixture for fretting wear, in particular to a high-temperature and high-pressure water pipe / plate contact type fretting wear fixture and a use method. Background technique [0002] In the pressurized water reactor nuclear power plant, the failure of the steam generator heat transfer tube connecting the primary and secondary water circuits due to fretting wear has become the most important reason, which seriously threatens the safe operation of the nuclear power plant. The contact mode between the heat transfer tube, the anti-vibration bar and the support plate is a tube / plate contact. In the actual experiment process, it is difficult to ensure its fastness and parallelism at the same time, resulting in large experimental errors, and even the test results under the same conditions may be There will be an order of magnitude difference, and the accuracy and repeatability of the ex...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a fixture for high-temperature and high-pressure water pipe / plate contact fretting wear and its use method, so as to solve the problem that it is difficult to ensure the fastness and parallelism between friction pairs in the tube / plate contact fretting wear experiment at the same time difficult problems, thereby improving the accuracy and reproducibility of experiments

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