scholarly journals Methods and Systems for High-temperature Strain Measurement of the Main Steam Pipe of a Boiler of a Power Plant While in Service

2016 ◽  
Vol 20 (6) ◽  
pp. 770-777 ◽  
Author(s):  
Chen Guang ◽  
Feng Qibo ◽  
Ding Keqin
Keyword(s):  
High Temperature ◽  
Power Plant ◽  
Strain Measurement ◽  
Steam Pipe ◽  
Main Steam ◽  
Temperature Strain

Design and Test of an Extensometer for Strain Monitoring of High Temperature Pipelines

2012 ◽  
Vol 134 (4) ◽  
Author(s):  
X. Y. Hu ◽  
J. H. Jia ◽  
N. Wang ◽  
X. M. Xia ◽  
Z. D. Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Power Plant ◽  
Room Temperature ◽  
Design Procedure ◽  
High Accuracy ◽  
Deformation Monitoring ◽  
Strain Monitoring ◽  
Site Monitoring ◽  
Steam Pipe ◽  
Main Steam

In this paper, an extensometer was specifically designed for online deformation monitoring of high temperature pipes and its applicability was verified experimentally. The design procedure and the installation of the extensometer were described in detail. Experiments were carried out to prove the accuracy and the reliability of the extensometer. The laboratory test at room temperature was performed. The reliability of the extensometer at high temperature was validated by on-site monitoring of the deformation of a main steam pipe operating at 540 °C in a power plant. It was demonstrated that the designed extensometer has a high accuracy and an excellent reliability for measurement of the deformation of the high temperature pipes.

On-Line Health Monitoring Research on T-Joint of Main Steam Piping

2013 ◽  
Vol 330 ◽  
pp. 549-552 ◽  
Author(s):  
J.H. Jia ◽  
H.C. Zhang ◽  
X.Y. Hu ◽  
L.P. Cai ◽  
S.T. Tu
Keyword(s):  
High Temperature ◽  
Power Plant ◽  
Residual Life ◽  
Thermal Power ◽  
Creep Damage ◽  
Piping System ◽  
Main Challenge ◽  
On Line ◽  
Main Steam ◽  
Creep Monitoring

The main challenge of long-time creep monitoring on site is a reliable sensor. In this paper, a sensing device is developed specifically for high temperature creep monitoring. And it is applied to on-line monitor the strain of material on T-joint of main steam piping. Its reliability is verified theoretically using the finite element method and experimentally by high temperature on site test. The creep damage of the T joint is evaluated basing on the creep rate sensed by the sensing device. And the residual life is predicted for the piping system using the Monkman-Grant equation. This system is useful for safety assessment procedures in thermal power plant, nuclear power plant and petrochemical industries.

The Creep Measurement of 475°C Pipeline Using Moire Interferometry

1998 ◽  
Vol 120 (2) ◽  
pp. 144-148 ◽  
Author(s):  
X. Huimin ◽  
Z. Daqing ◽  
D. Fulong ◽  
Z. Wei ◽  
P. Dietz ◽  
...  
Keyword(s):  
High Temperature ◽  
Power Plant ◽  
Experimental Method ◽  
Moiré Interferometry ◽  
Experimental Results ◽  
Measuring Error ◽  
Moire Interferometry ◽  
Interferometry Method ◽  
Main Steam ◽  
Creep Measurement

In this study, a new experimental method for measuring the creep of pipeline using moire interferometry was proposed. Curved-surface-deformed grating replicating technique was combined with the high-temperature-resistant grating and moire interferometry method, and was applied to measure the creep of a 475°C main steam pipeline in the Qinghe Power Plant for 3600 h. The measuring principle and experimental techniques are described. The measuring error and experimental results are discussed in detail.

Residual life prediction of service exposed main steam pipe of boilers in a thermal power plant

2000 ◽  
Vol 7 (5) ◽  
pp. 359-376 ◽  
Author(s):  
A.K. Ray ◽  
Y.N. Tiwari ◽  
R.K. Sinha ◽  
S. Chaudhuri ◽  
R. Singh
Keyword(s):  
Power Plant ◽  
Thermal Power Plant ◽  
Life Prediction ◽  
Residual Life ◽  
Thermal Power ◽  
Steam Pipe ◽  
Residual Life Prediction ◽  
Main Steam

RESISTANCE MATERIALS FOR HIGH-TEMPERATURE STRAIN MEASUREMENT

Strain ◽  
1968 ◽  
Vol 4 (3) ◽  
pp. 10-17
Author(s):  
A. GRINDROD ◽  
J. D. NODEN
Keyword(s):  
High Temperature ◽  
Strain Measurement ◽  
Temperature Strain
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