• Proceedings of the Korean Society of Precision Engineering Conference
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• 2004.05a
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• pp.79-79
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• 2004

벨로우즈는 형상자체가 가지는 유연성으로 인하여 배관시스템에서 발생하는 변형을 흡수하여 시스템의 파손을 방지하기 위해 주로 사용한다. 특히 자동차, 항공기, 선박의 파이프 배관시스템 설계시 열, 고압에 의한 변형 방지, 배기계의 진동 흡수 등을 위해 가장 널리 사용되고 있다. 또한 벨로우즈는 파이프라인에는 모든 경우에 사용이 가능하고, 설치와 유지보수가 간단하다는 이점이 있다.(중략)

• Proceedings of the Korean Society of Marine Engineers Conference
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• 2005.06a
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• pp.722-740
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• 2005

본 논문은 최근의 석유탐사 및 개발사업 현장에서 사용되고 있는 최신의 측량기술 및 해양공사의 측량 기술 표준화 동향을 소개하고, 이에 기반하여 동해1 가스전 해저배관 공사에 적용한 사례를 기술하였다. 해저배관 시설공사를 수행하기 위한 사전측량 및 시공지원 측량은 다양한 탐사장비가 동원되며, 각 장비들의 운영, 자료처리, 해석, 도면화를 위하여 실시간지원이 가능한 시스템을 운영하는 기술이 요구된다. 이를 위하여 해저배관 시공단계별(Pre-Installation Survey, Touch-down Monitoring, As-laid As-Built Survey, Post-installation Survey) 요구되는 측량성과 및 이를 획득하기 위한 소해측량 시스템의 성능평가 및 정확도 분석을 수행하였다. 또한, 해저지형 탐사를 위해 동원된 소해측량시스템(Swath Sonar System)에서 취득되는 수심(Bathymetry) 및 후방산란 음압(Backscattered Amplitude) 자료를 맵핑하여 해저배관의 설치 경로를 측량하는 기법에 대하여 소개하고, 추후 해저배관 보호 및 관리시의 효율적인 모니터링 기법을 제시한다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.3
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• pp.1270-1274
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• 2012

The pipe laid underground more than three decades ago are already starting to reveal the problem like corrosion. There have been many studies to design robotic system for a cost-effective revival of old pipes. And the ability to inspect in the pipes, the ability to treat and repaint the pipes and the fault-tolerant robotic system are well known important factors for the robotic system. It's real hard part to manage the underground pipes for companies because it needs high technical and too much money. According to this reasons, in this paper, we had design an in-pipe robotic system having abilities to inspect outworn pipes, to treat and paint old pipes. This new robot system is pressing wall type robot, and it has a good carrying power for working.

• 월간 기계설비
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• s.40
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• pp.50-56
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• 1993

장인상 대한주택공사 기계설치 1처 과정은 모든 건축물의 고층화가 가속화되고 있는 가운데 배관설비 규정의 내용과 제정 배경을 살펴보고, 규정 적용상의 효과와 문제점을 검토함으로써 공동주택 배관시스템 개발의 방향을 제시한 원고를 (사)공기조화$\cdot$냉동 공학회의 기술자료(제22권 제3호)에 게재, 본지에서는 그 내용중 일부를 요약 발췌 게재한 것임을 밝혀드립니다.

• Journal of the Society of Disaster Information
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• v.14 no.4
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• pp.450-457
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• 2018

Purpose: The evaluation of seismic performance of critical structures has been emerging a key issue in Korea, since a magnitude 5.8 earthquake, the worst in Koran history, struck Gyeongju, southern area in Korea on september 12th, 2016. In particular, the catastrophic failure of nonstructural components such as sprinkler piping systems can cause significant economic loss or loss of life during and after an earthquake. The nonstructural components can be more fragile than structural components in seismic behavior. Method: This study presents the seismic performance evaluation of fire protection piping system, using coupled building-piping system installed with Triple Friction Pendulum Bearings (TPBs). Kobe (Japan), Kocaeli (Turkey), and GyeongJu (Korea) were selected to consider the uncertainty of ground motions in this study. Result: In the simulation results, it was observed that the reduction of maximum displacements of the piping system with the TPBs' system was significant: Kobe, Kocaeli, and Gyeongju cases were 49%, 14.4% and 21.5%, respectively. Conclusion: Therefore, using seismically isolated system in a building-piping system can be more effective to reduce the seismic risk than a normally installed building-piping systems without TPBs in strong earthquakes.

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 1999.06a
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• pp.99-104
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• 1999

화재 진압시스템 중 가장 대표적이고 많이 사용되는 설비는 스프링클러 시스템이다. 국내에 설치되고있는 스프링클러 시스템은 많은 문제점을 가지고 있으며 특히 배관방식과 설계부분이 그러하다. 지금까지의 국내의 스프링클러 시스템 설계는 규약배관방식만으로 이루어졌으며, 최근에 수리계산 방식의 인정이 법제화되어 사용이 늘어날 전망이지만, 이미 선진외국은 오래 전부터 수리계산방식을 사용하고 있으며, 급속히 발전되고있는 컴퓨터 프로그램을 이용한 수리계산 설계를 시행하고 있다. 특히 선진국에서는 국내에서는 사용하지 않고 있는 격자배관 방식(Gird System)을 사용하고 있는데 이는 컴퓨터 프로그램에 의한 설계로만 가능하다. (중략)

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2006.11a
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• pp.122-126
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• 2006

Two types of pressurization system and low weight feeding piping system are developed. With sub-system tests, ullage pressure control performance was verified for 1 step and 2 step pressurization system and the feeding performance of feeding piping system was also verified. The weight of the feeding piping system is low enough for the application of launch vehicle. In addition, LOX conditioning system is developed for avoiding geysering and LOX temperature rise. Integrated performance was verified through integrated on-board feeding system performance tests.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.39 no.2
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• pp.199-206
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• 2015

In this study, a new diagnosis method which can predict the working states of a pipe or its element in realtime is proposed by using an artificial neural network. The displacement data of an inspection element of a piping system are obtained by the use of PIV (particle image velocimetry), and are used for teaching a neural network. The measurement system consists of a camera, a light source and a host computer in which the artificial neural network is installed. In order to validate the constructed monitoring system, performance test was attempted for two kinds of mobile phone of which vibration modes are known. Three values of acceleration (minimum, maximum, mean) were tested for teaching the neural network. It was verified that mean values were appropriate to be used for monitoring data. The constructed diagnosis system could monitor the operation condition of a gas pipe.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.2
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• pp.58-65
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• 2020

3D Models of offshore plant piping materials designed by 3D CAD systems are provided to the production processes in the form of 2D piping drawings and 2D piping installation drawings. In addition to the standard engineering information, the purchasing, procurement, manufacturing, installation, and inspection of raw materials are managed systematically in an integrated process control system. The existing integrated process management system can help reduce the processing time by managing the flow and progress of resources systematically, but it does not include 3D design model information. Hence, it is difficult to understand complicated pipe structures before installing the pipe. In addition, when design changes or immediate design modifications are required, it is difficult to find related data or exchange information quickly with each other. To solve this problem, an offshore plant-piping process-monitoring system was developed based on a 3D model. The 3D model-based piping monitoring system is based on Visual Studio 2017 C# and UNITY3D so that the piping-process work information can be linked to the 3D CAD model in real time. In addition, the 3D model could check the progress of the pipe installation process, such as block, size, and material, and the progress of functional inspection items, such as cleaning, hydraulic inspection, and pneumatic inspection.

• Nuclear industry
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• v.19 no.12 s.202
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• pp.59-65
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• 1999

원자력발전소는 우라늄 핵연료를 태워서 물을 끓여 증기를 발생시키고 이 고압 증기로 터빈을 돌려 전기를 생산하는데, 이와 같은 일련의 과정은 고압 용기나 배관을 사용하여 가능하게 된다. 이와 같은 고압 용기 및 고압 배관은 그 기기 안에 핵반응 물질이 들어 있다는 점을 고려해 볼 때 그 기기의 건전성 확보는 매우 중요한 일 중 하나이다. 본고에서는 원자력발전소의 원자로 압력 용기를 비롯하여 압력 배관의 용접부에 대한 결함 탐지에 사용되는 자동 초음파 탐상 기기에 관하여 서술하고자 한다.