Metal corrugated pipe external-pressure high-temperature fatigue test device

• Main Authors: DAI YANG, LI HUSHENG, ZHANG DALIN, SUN ZHITAO, MA ZHICHENG, JIA HUA, GUAN CHANGJIANG, QIAN JIANG, ZHANG QUANHOU, MA YUSHAN, LUO XIANNIAN, LI QIU, ZHANG WENLIANG, ZHANG XIUHUA, YU XIANGLIN, WANG XUE
• Format: Patent
• Language: Chinese; English
• Published: 01.12.2020
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a metal corrugated pipe external pressure high-temperature fatigue test device independent of a pressure maintaining system. A gas phase space in an autoclave is utilized to realize a corrugated pipe external pressure high-temperature high-pressure fatigue test under a liquid phase test medium, and the problem that an existing corrugated pipe is difficult to carry out a fatigue test under a high-temperature high-pressure state is solved. The test device comprises a hydraulic servo testing machine and a fatigue test control system; according to the hydraulic servo testing machine, a corrugated pipe to be tested is arranged in an inner cavity of the autoclave through a positioning rod, immersed in a test medium and connected with the hydraulic servo testing machine through a valve rod; a heating device is arranged outside the cylinder wall of the autoclave, and a spraying device is arranged at the position corresponding to the heating device; a pipeline communicated with a low-pressure g