1.2 MPa承压能力翻转内衬标准和质量检验

Standards and Quality Inspection of Cured-in-place Pipe Technology with 1. 2 MPa Pressure Capacity

介绍翻转内衬技术修复老旧燃气管道的原理和优势、在国内的应用现状、国内外相关标准及认证情况。以北京市某段设计压力为1.0 MPa、运行压力为0.8 MPa的次高压B燃气管道为试验管段,选取德国某公司生产的承压能力(修复后燃气管道的运行压力)为1.2 MPa的翻转内衬材料,进行翻转内衬技术修复试验。进行修复前母管评估、材料孔洞爆破试验、管道强度试验、样管剥离试验、连续变压试验以及修复后试运行,结果均合格,表明承压能力为1.2 MPa的翻转内衬技术适用于老旧燃气管道修复。展望翻转内衬技术修复老旧燃气管道的发展前景。

The principle and advantages of cured-in-place pipe technology to rehabilitate the old gas pipeline, the domestic application status, the relat- ed standards at home and abroad and the certification situation are introduced. A segment of sub-high pres-sure B gas pipeline with a design pressure of 1.0 MPa and a working pressure of 0.8 MPa in Beijing is used as the test pipeline, and the cured-in-place pipe mate- rial with 1.2 MPa pressure capacity （working pressure of rehabilitated gas pipeline ） produced by a German company is selected to conduct the with cured-in-place pipe technology. main pipeline, the material hole rehabilitation test The evaluation of blasting test, the pipeline strength test, the sample pipe stripping test and the continuous pressure variation test before the re- habilitation as well as the commissioning after the reha- bilitation are conducted. All the results are qualified, which show that the cured-in-place pipe technology with 1.2 MPa pressure capacity is suitable for the reha- bilitation of old gas pipeline. The development pros-pects of cured-in-place pipe technology to rehabilitate the old gas pipeline are forecasted.