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Research Papers: Operations, Applications & Components

Design and Verification of a Sensing Device for Deformation Measurement of High Temperature Pipes

[+] Author and Article Information
J. H. Jia1

Key Laboratory of Pressure Systems and Safety, Ministry of Education, School of Mechanical Engineering, East China University of Science and Technology, Shanghai 200237, P.R. Chinajhjia@ecust.edu.cn

X. Y. Hu

Key Laboratory of Pressure Systems and Safety, Ministry of Education, School of Mechanical Engineering, East China University of Science and Technology, Shanghai 200237, P.R. Chinaaya277@sohu.com

Z. L. An

Key Laboratory of Pressure Systems and Safety, Ministry of Education, School of Mechanical Engineering, East China University of Science and Technology, Shanghai 200237, P.R. Chinaanziliang123@163.com

F. Z. Xuan

Key Laboratory of Pressure Systems and Safety, Ministry of Education, School of Mechanical Engineering, East China University of Science and Technology, Shanghai 200237, P.R. Chinafzxuan@ecust.edu.cn

S. T. Tu1

Key Laboratory of Pressure Systems and Safety, Ministry of Education, School of Mechanical Engineering, East China University of Science and Technology, Shanghai 200237, P.R. Chinasttu@ecust.edu.cn

1

Corresponding authors.

J. Pressure Vessel Technol 133(4), 041601 (May 09, 2011) (7 pages) doi:10.1115/1.4003461 History: Received March 18, 2010; Revised January 09, 2011; Published May 09, 2011; Online May 09, 2011

In this paper, a sensing device specifically for measuring deformations of high temperature pipes is designed, and its applicability is verified both experimentally and theoretically. First, the design procedure and the working principle of the sensing device are described in detail. Then, experiments are carried out to prove the accuracy and the long-term stability of the sensing device. To verify the accuracy of the device, numerical simulation of the deformation of a pipe model is carried out using finite element method. Results from the experimental measurements are in good agreement with results from the numerical simulation. The long-term stability of the device is validated by monitoring the deformation. Conclusions are drawn that the designed sensing device has high accuracy and excellent stability and can be used for measuring deformations of high temperature pipes in power plants.

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Copyright © 2011 by American Society of Mechanical Engineers
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Figures

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Figure 1

Structure of the designed sensing device

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Figure 2

Schematic of the stabilizer rod

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Figure 3

Positions of the devices

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Figure 4

Schematic plan of the test setup

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Figure 5

Picture of the experimental setup on the creep testing machine

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Figure 6

Finite element model of the test pipe

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Figure 7

The measurement point and the force acting point

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Figure 8

Deformation map of the pipe when the load is 8000 N

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Figure 9

Comparison between experimental and simulation results of the test pipe deformation

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Figure 10

The trussing style of the mounting plate

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Figure 11

High temperature experimental setup on the creep testing machine

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Figure 12

Dimension of the tested pipe

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Figure 13

Finite element model of the test pipe

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Figure 14

Comparison between experimental and simulation results of the test pipe deformation

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