浅谈长输石油天然气管道环焊缝超声检测.doc

浅谈长输石油天然气管道环焊缝超声检测摘要：近些年，我国的石油、天然气行业发展迅猛，由此衍生的国家对石油以及天然气长输管道的建设发展迅速，我国相继开发建设了陕一京输气管道工程、兰一成一渝输气管道工程、涩一宁一兰输气管道工程、京一石输气管道工程、沧一淄输气管道工程和“西气东输”管道工程、西部原油成品油管道工程。长输管道的正常工作与否直接关系着国家或者地区的经济发展，而无损检测是保证长输管道焊接质量的重要手段之一，能够保证长输管道的使用寿命。随着长输管道建设的不断发展，许多先进的无损检测新技术、新工艺在长输管道无损检测施工中得以推广应用，产生了重大的经济效益和社会效益，使长输管道无损检测的发展逐步进入一种良性循环轨道。现在广泛应用的是全自动超声检测系统来对长输石油以及天然气管道的环焊缝进行无损伤检测。 关键字：长输管道,环焊缝,超声检测 Abstract: in recent years, China’s oil and gas industry developing rapidly, thus derivative country for oil and natural gas pipelines construction development rapidly, our country has successively developed the construction in its gas transport pipeline engineering, a Beijing seems to chongqing into a gas pipeline engineering, astringent YiNing a gas pipeline engineering, Beijing Abram a stone pipeline engineering, surging a Zi gas transmission pipeline engineering and “west-east gas transmission” pipeline engineering, the western crude oil pipeline engineering. The normal work of the pipelines or not directly related to the economic development of the country or region, and nondestructive testing is to guarantee the quality of welding pipeline is one of the important methods, can guarantee that the service life of the pipelines. With long distance pipeline construction development, many advanced nondestructive testing of new technology, new technology in the long distance pipeline construction to nondestructive testing of application, which have produced great economic benefits and social benefit, and make long distance pipeline of NDT development gradually into a virtuous circle orbit. Now a wide range of applications is fully automatic ultrasonic testing system to oil and natural gas pipeline long lost the ring welds are no damage detection. Key word: pipelines, ring welding, ultrasonic testing 中图分类号：P618.13文献标识码：A 文章编号： 1. 长输管道 对于管道运输，我国有着久远的使用历史，根据史书记载，早在秦汉时期，四川省就开始使用竹管输送卤水，随后又用于输送天然气。然而，真正的工业性管道输送开始于19世纪早期。美国宾西法尼亚州，1825年敷设了第一条输气管线，管道采用铸铁管和丝扣连接。直到20世纪二十年代，焊接生产工艺方法在管道上的应用，开创了管道