Development Of Multi-function Blasting Test System For Pipeline Components

Pipeline components are widely used in petroleum,power,chemical,municipal,construction,environmental protection and other fields.The performance is directly determined by the material,welding,pressure of pipeline components.As a key test for quality testing of pipeline components,destructive testing has gradually become mandatory.Sampling and testing projects.More and more production plants and testing institutions conduct blasting tests to verify product performance,so a suitable full-scale blasting equipment is needed to meet the needs of users.In this paper,aming at the various blasting test requirements of pipeline components,a multi-functional blasting test system for pipeline components was designed.Four blasting test systems with different pressure levels consisting of mechanical pressure system,automatic control system and automatic test system were designed.The software control system of the blasting test system is designed by the computer and Omron PLC as the blasting test hardware control system.The upper computer of the control system has a good human-computer interaction interface,which can dynamically reflect the pressure changes,holding time and alarm information during the pressure and pressure holding process.The holding machine has real-time motion control and logic control functions.Four kinds of pressure levels are used to achieve automatic boosting and pressure holding control for various caliber pipes and different test pressure ranges.By using two plunger pumps independently and in cooperation,the traditional problems of narrow test pressure range,a single test caliber and low test accuracy of blasting test is overcome.In this paper,a large number of tests and application experiments have been carried out on the blasting test system developed by the pipeline component manufacturer.The results show that the blasting test system of the pipeline component can meet the welded pipe and ERW pipe with the diameter of 219~1422mm,the length of 12 m and the pressure of 300 MPa.With the advantages of small size,low power consumption and wide application range,the blasting test system is suitable for research institutions,testing institutions and steel pipe factory to conduct hydraulic pressure blasting test of steel pipe.