Hits:

Date of Publication:2022-10-10

Journal:机械工程学报

Affiliation of Author(s):运载工程与力学学部

Issue:24

Page Number:15-23

ISSN No.:0577-6686

Abstract:To realize the pipeline whole circumference inner corrosion on-line monitoring and promote the measurement accuracy, a new method based on the traditional electrical resistance(ER) approach is developed for corrosion monitoring on account of the new type ring pair ER probe. The measuring error produced by the geometry restriction and temperature difference can be solved through the ring pair probe. Through the set of multi segments on the circumference of the ring pair and the calculation of resistance ratio of each segment, the pipeline whole direct on-line corrosion monitoring is realized. The temperature difference between the inner pipe wall and outer pipe wall can also be calculated and monitored through the ring pair method. The formation of the condensate liquid film in the vapor transportation pipeline can be forecasted. Based on the research, a four quadrants ring pair sensor, traditional wire ER sensor and high accuracy thermocouples are arranged into the X65 pipeline which is placed in the laboratory to monitor the pipeline inner corrosion and the temperature difference between the inner and outer pipe wall. The results shows that the method which uses the new type ring pair ER probe can measure the temperature difference between the inner and outer pipe wall. And through the comparison with the corrosion coupon, it is found that the ring pair ER sensor had high measurement accuracy on the corrosion depth and corrosion rate than the traditional wire ER sensor. © 2015 Journal of Mechanical Engineering.

Note:新增回溯数据