Multidirectional fretting wear device and testing method for heat transmission pipe of steam generator

A technology of steam generator and fretting wear, which is applied in the direction of testing wear resistance, etc. It can solve the problems that affect the safety and reliable operation of nuclear power plants, restrict the integrity evaluation and life prediction of steam generators, and achieve high precision and reproducibility Good, accurate experimental data

Active Publication Date: 2014-02-26
SOUTHWEST JIAOTONG UNIV +1
View PDF10 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, there are no experimental equipment and test methods specially designed for nuclear power heat transfer tube fretting wear experiments, no basic experimental data accumulation of heat transfer tube fretting...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multidirectional fretting wear device and testing method for heat transmission pipe of steam generator
  • Multidirectional fretting wear device and testing method for heat transmission pipe of steam generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] figure 1 , figure 2 Shown is a multi-directional fretting wear device for steam generator heat transfer tubes, which consists of a frame, a driving device, a leveling and lifting system, and a data acquisition and control system, wherein:

[0033] The composition of the frame is: the base 10 is provided with a gantry frame, the two columns 11 of the gantry frame are covered with a vertically movable center beam 12, and the upper surface of the center beam 12 is connected to the gantry through the screw pair 14. The top beam 13 of the frame is connected;

[0034] The composition of the test piece driving device is: the upper end of the piezoelectric ceramic actuator 21 is fixedly connected to the lower surface of the middle part of the center beam 12, and the lower end passes through the flexible joint 23, the connecting rod 22, the load cell 25 and the clamping block test piece in sequence. The upper clamp 26 of 28 is connected, and a displacement sensor 27 is instal...

Embodiment 2

[0046] The structure of the multi-directional fretting wear device of the heat transfer tube in this example is basically the same as that of the device in Example 1, except that the liquid holding wall 33 is removed.

[0047] The method of using the multi-directional fretting wear device of this example to carry out the multi-directional fretting wear test of the heat transfer tube is as follows:

[0048] a. Clamp the block test piece 28 on the upper fixture 26, adjust the vertical height of the middle beam 12 through the screw pair 14, make the block test piece 28 close to the heat transfer tube 30, and then adjust the front and rear of the angular displacement table 37 The inclination angle keeps the heat transfer tube 30 parallel to the plane of the block test piece 28, and then the lifting platform 36 is adjusted to keep the block test piece 28 in good line contact with the heat transfer tube 30;

[0049] b. The data acquisition control system controls the piezoelectric c...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a multidirectional fretting wear device and a testing method for a heat transmission pipe of a steam generator. The device is composed of a rack, a driving device, a leveling hoisting system and a data acquisition control system, wherein the structure of the test piece driving device is as follows: the upper end of a piezoelectric ceramic acting device is fixedly connected with a middle beam and the lower end of the piezoelectric ceramic acting device is connected with an upper clamp for clamping a block-shaped test piece sequentially via a flexible connector, a connection rod and a force sensor; a displacement sensor is mounted between the upper clamp and the middle beam; the structure of the leveling hoisting system of the heat transmission pipe is as follows: an angular displacement platform is fixedly arranged on a base and a hoisting platform is fixedly arranged on the angular displacement platform; a test piece supporting plate is mounted on the hoisting platform; two cylindrical test pieces which are the same in diameter are placed on the supporting plate and are close to each other; the outer sides of the cylindrical test pieces are close to clamping plates and the clamping plates are in threaded connection with lower pressing plates; the lower pressing plates are in tight fit with the cylindrical test pieces; the heat transmission pipe is placed in the two cylindrical test pieces. The device is simple in structure and easy to operate, can carry out a multidirectional fretting wear test on the heat transmission pipe, and can provide accurate, reliable and high-precision experimental data.

Description

technical field [0001] The invention belongs to a multi-directional compound fretting wear device specially applied to a heat transfer tube of a steam generator and a multi-directional compound fretting wear test method for a heat transfer tube of a steam generator. Background technique [0002] Fretting refers to the relative motion of extremely small amplitude (micron level) between two contact surfaces (such as tight fitting surfaces) under the action of alternating loads such as mechanical vibration, fatigue load, electromagnetic vibration or thermal cycle. The contacting surfaces are usually nominally stationary, i.e. fretting occurs in mechanical parts that are "tightly" fitted. [0003] The heat transfer tubes of steam generators in nuclear power plants transfer heat through the flow of high-temperature fluids. Due to the uneven flow rate and temperature of each part of the fluid, fretting and fretting wear will occur between the heat transfer tube and its supporting...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01N3/56
Inventor 朱旻昊蔡振兵彭金方刘新龙周仲荣米雪熊雪梅钱浩谢永诚李晨林绍萱徐雪莲
Owner SOUTHWEST JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap