针对天津港-华北石化原油管道工程项目青县中间热泵站离心泵的配管工作，利用CAESAR Ⅱ软件对泵进出口管道的受力情况进行应力分析，并根据应力分析计算结果对管道安装进行方案的优化调整，使离心泵管嘴受力满足厂家资料及标准规范的要求，并满足长期安全运行的需要。

The CAESAR Ⅱ software is used to do stress analysis on the pipelines at both entrance and outlet of the centrifugal pumps at Qingxian halfway heat pump station in Tianjin Port-North China Petrochemical crude oil pipeline project.And then the pipeline installation scheme is adjusted and optimized according to the stress analysis results so that the stress on centrifugal pump nozzle can better meet the requirements of its manufacturers and standard specifications,as well as meet the requirements for long-term safe operation.