Failure Diagnosis and Measurements Correction of Flow meters in Large-Scale Chemical Plant under Long-Term Continuous Operation

大型化工厂长期连续运行流量计的故障诊断与测量校正

• 批准号: 20560714
• 负责人: TSUGE Yoshifumi
• 金额: $ 2.91万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20560714/
• 关键词: プロセス運転; 設備管理; 故障診断; 流量計; 測定値補正; 保全; 長期連続運転

We developed the two methods for estimating errors contained in the measured values of flowmeters, considering results of the failure diagnosis method based on control limits. First method was formulated as a quadratic programming problem under constraints of material and component balances using measured values obtained in one steady state. Second method was formulated as an nonlinear optimization problem under constraint of material balance, supposing that errors contained in the measured values don't become smaller and the measured values were obtained in more than one steady states during a long-term continuous operation. The effectiveness of these estimation methods were demonstrated by the numerical simulations with the use of an ethanol plant.

考虑到基于控制限值的故障诊断方法的结果，我们开发了两种方法来估计流量计测量值中包含的误差。第一种方法被制定为一个二次规划问题的约束下的材料和组件的平衡，使用测量值在一个稳态。第二种方法是在物料平衡约束下的非线性优化问题，假设测量值中包含的误差不会变小，并且测量值是在长期连续运行的多个稳态下获得的。以某乙醇厂为例进行了数值模拟，验证了这些方法的有效性。

项目成果

An Error Estimation Method of Flowmeters using Results of Failure Diagnosis Based on Control Limits

基于控制限的故障诊断结果的流量计误差估计方法

• 发表时间: 2009
• 期刊: Proceeding of the 22nd International symposium on Chemical Engineering, Daejeon, Korea OG-03
• 作者: 小松真一;木村直樹;柘植義文
• 通讯作者: 柘植義文

A Method for Error Estimation of Flowmeters considering Results of Failure Diagnosis Based on Control Limits

基于控制限的考虑故障诊断结果的流量计误差估计方法

• 发表时间: 2010
• 期刊: Proceedings of 5th International Symposium on Design, Operation and Control of Chemical Processes (PSE Asia 2010), Singapore
• 作者: Shinichi KOMATSU;Naoki KIMURA;Yoshifumi TSUGE
• 通讯作者: Yoshifumi TSUGE

管理幅を基にした流量計の故障診断および測定値の補正

基于控制宽度的流量计故障诊断及测量值修正

• 发表时间: 2010
• 作者: 小松真一;木村直樹;柘植義文
• 通讯作者: 柘植義文

A Proposal of Error Estimation Method for the Improvement of Failure Diagnosis based on Control Limits

基于控制限的改进故障诊断的误差估计方法的提出

• 发表时间: 2010
• 期刊: Proceeding of the 23rd International Symposium on Chemical Engineering, Fukuoka, Japan OI-03
• 作者: Satoshi HATANAKA;Naoki KIMURA;Yoshifumi TSUGE
• 通讯作者: Yoshifumi TSUGE

管理幅を基にした故障診断の結果を考慮した誤差推定法の改良

基于控制宽度考虑故障诊断结果的误差估计方法改进

• 发表时间: 2009
• 期刊: 信学技報 R2009-33
• 作者: 小松真一;木村直樹;柘植義文
• 通讯作者: 柘植義文