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首页> 外文会议>American Society of Civil Engineers(ASCE) International Conference on Pipeline Engineering and Construction v.2; 20030713-20030716; Baltimore,MD; US >State-of-the-Art in Sensor Technologies for Pipe Inspection
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State-of-the-Art in Sensor Technologies for Pipe Inspection

机译：管道检测传感器技术的最新发展

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Pipelines are inherently safer to the public than other modes of freight transportation for natural gas and hazardous liquids (such as oil products) because they are, for the most part, located underground. Nevertheless, the volatile nature of these products means that pipeline accidents can have serious consequences. For example, when a pipeline ruptured and spilled about 250,000 gallons of gasoline into a creek in Bellingham, Washington, in June 1999, three people were killed, eight were injured, several buildings were damaged, and the banks of the creek were destroyed along a 1.5-mile section. The United States is critically dependent on natural gas and petroleum liquids transported through pipelines. The infrastructure that currently transports these energy resources is aging, with a significant fraction being more than 50 years old. The enormity of the problem of deteriorating pipeline infrastructure is apparent. Since rebuilding the piping system is not financially realistic, pipeline operators require the capacity to monitor the condition of buried pipes. Thus, a reliable pipeline assessment and management system is necessary so that pipeline operators can develop long-term, cost-effective maintenance, repair, and rehabilitation programs. These programs are necessary to ensure that critical pipeline sections are repaired or replaced before they fail. The quality of the assessment can be optimized by choosing the most suitable sensors for the particular inspection problem. In order to do this, it is necessary to define the specifications of the required inspection and, consequently, to take into account details of the nature and characteristics of the pipe. Studies have shown that the structural performance and behavior of the pipe is dependent on type of backfill placed around the pipe, construction sequence, compaction control, surface loads, and the type of pipe material. To fully understand the condition of a pipe network additional information other than pipe surface condition is necessary. The aim of this paper is to review currently used and newly developed sensing methods suitable for assessing the condition of sewer pipes. A research is underway at Penn State to determine if Non-Contact Ultrasound (NCU) can be used to quantify the state of defects in pipelines. The goal of this research is to develop a test method that can add complementary pipe information to existing surface image assessments. Superposing an ultrasonic image onto an optical image of the sample creates a visual context in which interpretation and analysis are easily achieved.
机译：与天然气和有害液体（例如石油产品）的其他货运方式相比，管道本质上对公众更安全，因为管道大部分位于地下。但是，这些产品的易失性意味着管道事故可能会造成严重后果。例如，1999年6月，当一条管道破裂并将大约25万加仑汽油洒入华盛顿州贝灵厄姆的一条小河中时，三人死亡，八人受伤，几栋建筑物被毁，小河两岸被摧毁。 1.5英里部分。美国严重依赖通过管道运输的天然气和石油液体。当前运输这些能源的基础设施正在老化，其中很大一部分已经使用了50多年。管道基础设施不断恶化的问题是显而易见的。由于重建管道系统在财务上不现实，因此管道运营商需要具有监视地下管道状况的能力。因此，必须有可靠的管道评估和管理系统，以便管道运营商可以制定长期的，具有成本效益的维护，维修和修复计划。这些程序对于确保关键管道部分在故障之前得到修复或更换是必不可少的。评估质量可以通过针对特定检查问题选择最合适的传感器来优化。为此，有必要定义所需检查的规格，并因此考虑到管子的性质和特性的细节。研究表明，管道的结构性能和行为取决于管道周围回填的类型，施工顺序，压实控制，表面载荷以及管道材料的类型。为了完全了解管网的状况，除了管面状况外，还需要其他信息。本文的目的是回顾适用于评估下水道状况的当前使用和最新开发的传感方法。宾夕法尼亚州立大学正在进行一项研究，以确定是否可以使用非接触超声（NCU）量化管道中的缺陷状态。这项研究的目的是开发一种测试方法，该方法可以将补充的管道信息添加到现有的表面图像评估中。将超声图像叠加到样品的光学图像上可以创建视觉环境，在其中可以轻松实现解释和分析。

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