An oil and gas pipeline wall thickness and defect detection system, which comprises a sensor fixing device and the 32 group can realize the adaptive adjustment of the coarse radial spring circumferential array measuring head parts, as well as for the implementation of measurement process control, signal acquisition and data processing and the environmental temperature compensation control system, sensor fixed in the device, two disc body (1) and disc connector (3) through a bolt (2) to form a whole, ball joint (33) through the spherical hinge connecting piece (32) and the connecting bolt (31) and (1) the lateral plate connected; 32 sets of measuring head is divided into two parts different span uniformly on the sensor fixing device, the slide bar (4) end of the connecting pin (27) and a measuring head plate (10) connected to the other end through the adjustment of the spring (9) and with a through hole. The coarse adjustment screw (6), and the adjustment of the spring (9) and coarse screw (6) in the free expansion; the coarse adjustment screw (6) through the screw thread and the disc body (1) is connected to the coarse lock nut (5) installed in the coarse screw (6), and the plate body (1) the outer circumference to realize locking function, adjusting spring coarse nut (8) and adjust the spring lock nut (7) installed in the coarse screw (6), coarse nut (8) in the coarse screw (6) on the move to change the regulating spring (9) the initial state, the coarse lock nut nut (7) and coarse (8) to realize locking function; adjusting spring (9) through the end of the spring seat (28) and (10) close to the measuring head base plate, the other end is arranged in a coarse adjustment nut (8), a measuring head, a copying wheel (12 through) The profiling wheel fixing nut (13) mounted on the profiling wheel bracket (14), (14) the profiling wheel bracket and the bottom plate through the profiling wheel bracket mounting bolt (29) and a contour wheel bracket nut (30) is connected with the back thread guide rod (17) installed on the preload adjustment nut (18). Reply to the guide rod (17) and the top connector (16) connected by a screw thread, the bottom end is arranged in the guiding seat (20), the preload adjustment nut (18) and a guide seat (20) is arranged between the return spring (19), connecting piece return mechanism (16) through a connecting bolt (15) and bottom plate (10) fixed seat guide return mechanism (20) through the guide screw (26) is fixed on the U type soft magnetic material (25), U type soft magnetic material (25) are wound on the excitation line Ring (24), support (21) bonded to the U type soft magnetic material (25), Holzer (22) device stuck on the two magnetic element (23), and with the adhesive on the support frame (21) of the top.
【技术实现步骤摘要】
本专利技术涉及一种油气管道壁厚及缺陷检测系统,用于对天然气、煤气或石油管道壁厚和缺陷的检测,属于无损检测技术、传感器技术、机器人技术。
技术介绍
石油天然气管道输送在国民经济中占有极为重要的地位。油气管道输送的基本要求是安全、高效。管道一旦发生事故,不仅会造成巨大经济损失,而且对社会和环境也会产生严重的后果,其直接、间接经济损失巨大,修理费用也非常高,因此,对在役长距离油气输送管道,尤其是对新建和老龄管道的检测更显重要。目前对于管道壁厚及缺陷的检测主要有漏滋法、超声法、涡流法、电磁超声法等。对于漏磁法专利G01N 28/82公告了一种检测铁质杆件、管件周向缺陷的探伤机,专利CN2546518Y采用励磁线圈整体磁化的方式对被测管道进行缺陷检测,专利CN2286158Y的钢管漏磁探伤机公布了一种采用直流励磁的方式检测钢管周向或轴向分布缺陷的装置,以上3种装置只能在被测管道外侧对缺陷进行定性检测,无法识别其厚度大小。超声检测原理是根据超声回波的时间延迟和方向的改变,来探测管道腐蚀坑的大小、裂纹和应力的存在,该种方法用计算机解读时较为方便和准确,但因在检测过程中必须使用耦合剂,很难适应煤气、天然气管道在线检测的要求。对于涡流检测,多用于导电材料表面缺陷、薄板厚度以及涂层厚度的检测,由于趋肤效应的影响,其涡流无法渗透大于5mm的厚度。专利号为CN 1051086A的电磁超声自动探伤技术,由于接收信号励磁线圈与被测表面的距离大小直接影响测量精度,故不能应用于在线检测;专利G01N28/82虽然解决了CN 1051086A的问题,但未涉及厚度测量。
技术实现思路
本专利技 ...
【技术保护点】
【技术特征摘要】
【专利技术属性】
技术研发人员:颜国正,左建勇,丁国清,张云伟,付西光,颜德田,
申请(专利权)人:上海交通大学,
类型:发明
国别省市:
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