Abstract:
The present invention relates to a pipe inspection robot launching and receiving device. The present invention includes a stopple fitting that has a branch pipe portion which surrounds piping and allows a through-hole perforated in the piping to communicate with the outside; a sandwich valve that is fixed to the branch pipe portion; a sealed tube that is mounted on the sandwich valve, accommodates the pipe inspection robot, and is sealed by an end cap; a holder portion that is disposed in the end cap and holds the pipe inspection robot in the sealed tube; and a holder operating unit that operates the holder portion to separate the pipe inspection robot from the holder portion. In the pipe inspection robot launching and receiving device according to the present invention having the above-described configuration, the pipe inspection robot is accommodated and supported in a detachable manner, and the holder portion is provided with manual pulling and automatic locking functions, and thus the pipe inspection robot is unlikely to start due to malfunctioning. In addition, the pipe inspection robot that returns after completing operations can be received and automatically fixed in the device. Accordingly, the recovery of the pipe inspection robot is facilitated, and uniform pressure and purge systems are provided to allow safe use.
Abstract:
PURPOSE: A link structure for holding a sensor system for pipe nondestructive inspection is provided to easily prevent the degradation of the performance of a robot which passes through a pipe. CONSTITUTION: A link structure for holding a sensor system for pipe nondestructive inspection comprises a sensor system (20), a pipe inspection robot (10), two links (100,200), and an elastomer (300). The sensor system inspects a pipeline based on magnetic leakage. The pipe inspection robot, in which the sensor system is mounted, performs an inspection while the robot freely travels the pipeline. Each one end of the two links is hinge-connected respectively to the sensor system and the pipe inspection robot, and each of the other ends of the two links is slot-connected so that central points are intersected into an X shape. Restraining units are formed on the upper and lower parts of the two links around the central points. The front and rear ends of the elastomer are installed respectively in the two links so that the elastomer horizontally connects the two links.
Abstract:
PURPOSE: A sensor device for a nondestructive inspection with a magnetic force controlling function is provided to obtain excellent inspection performance by maintaining the maximum magnetization level as an area of a magnetic circuit where a magnetic force passes through is large and no barrier exists in the magnetic circuit. CONSTITUTION: A sensor device(11) for a nondestructive inspection with a magnetic force controlling function comprises a base(13), a sensing unit(39), a first main magnet(25), a second main magnet(26), a first magnet holder(41), and a first driving unit. The base extended in a travelling direction includes a sensing unit installation surface on the central top surface in an extended direction and functions as a yoke providing a magnetic passage. The sensing unit is mounted on the sensing unit installation surface and includes a plurality of hole sensors. The hole sensors are mounted on the sensing unit installation surface and sense a leakage flux. The first main magnet is a plate type magnet of predetermined thickness and arranged in one later side of the sensing unit on the top surface of the base. The N and S poles of the first main magnet are magnetized in a thickness direction. The second main magnet is arranged in a side opposite to the first main magnet while the sensor unit is interposed between the first and second main magnets. The N and S poles of the second main magnet are magnetized in a thickness direction. The first magnet holder supports the main magnet to be rotatable. The first driving unit rotates the first main magnet through the first magnet holder, thereby controlling a magnetic flux formed between the first and second main magnets.
Abstract:
PURPOSE: A magnetic flux leakage pig is provided to prevent performance reduction of an eddy current sensor due to magnetic noises and to enable smooth traveling in a pipe. CONSTITUTION: A magnetic flux leakage pig(1) comprises a body(2), a first mount cup(10), a second mount cup(11), a hall sensor, an eddy current sensor, and a bypasser. The body in which magnetic field induction units(3) inducing a magnetic field in a pipe are installed travels inside the pipe. The first mount cup is composed of a connection part and an elastic movable part arranged in the radial direction along the circumferential surface of the body and arranged between the magnetic field induction units. The second mount cup is composed of a connection part, an elastic movable part, and a sealing part and arranged in the rear end of the body. The hall sensor measures the flux of magnetic leakage to detect defects of the pipe. The eddy current sensor determines the location of the pipe defects. The bypasser allows the magnetic flux around the eddy current sensor to pass therethrough.
Abstract:
A magnetic flux leakage pig is provided to increase saturation of magnetic field in an internal wall of a pipe by a magnetic field induction unit formed with several plate brushes. A magnetic flux leakage pig includes a body(2), magnetic field induction units(3), a sensor module(5), and a supporter(7). The magnetic field induction units are installed on the exterior of a pipe for inducing magnetic field on the internal wall of the pipe, where each of the magnetic field induction units consists of several plate brushes for uniform induction of the magnetic field. The sensor module is positioned between the magnetic field induction units and detects leakage of the magnetic field from the pipe. The supporter fixes and supports the sensor module on a back yoke(4b).
Abstract:
PURPOSE: Provided is a real time monitoring system for a gas pipe which places an acceleration sensor into the gas pipe available currently so that it monitors shock given to the pipe in real time. CONSTITUTION: The real time monitoring system for the gas pipe comprises the parts of: acceleration sensor A,B(20, 30) which detect shock of the pipe at both edges of the gas pipe(10) buried; an amplifier and a bandpass filter(40) which amplify and filter the detected signal; a signal treater(50) which converts the amplified signal into an A/D to trigger; and a data analysis instrument(70) which receives the triggered signal through a modem(60) and sends signal into a monitor(80) to print out.
Abstract:
본 고안은 배관의 유지/보수를 위한 점검이 보다 효율적으로 이루어질 수 있도록 하는 피그(PIG)의 센서 내장형 기계식 핑거(Mechanical finger)에 관한 것으로, 가스배관의 검사나 각종 배관 검사 등이 용이하게 하여 검사 비용의 절약과 인텔리전트 피그(Intelligent PIG) 장비에 사용된 기술과 유사한 기술을 필요로 하는 각종 정밀 장비를 자체 개발할 수 있는 기반을 제공하며, 가스 배관의 손상으로 인한 사고를 미연에 방지하는 데 있다. 상기 목적을 달성하기 위한 본 고안은 원통체로 된 바디(10)와; 상기 바디(10)의 외원주면을 따라에 방사상으로 설치되는 지지브라켓트(12)에 설치되며, 타측의 자유단(20b)이 일측의 고정단(20a)을 지지브라켓트(12)와 연결하기 위한 축핀(14)을 기점으로 회동할 수 있게 설치되는 다수의 가이드링크(20)와; 상기 가이드링크(20)의 중앙부에 고정되어 가이드링크(20)가 케이블(32)에 의해 일방향으로 회전 인장력이 작용할 수 있도록 인장스프링(30)이 구비된 케이블(32)과; 표면에 다수의 구멍(41)이 천공되어 체결부재(42)를 통해 상기 가이드링크(20)에 선택적으로 조립되며, 선단에는 조립되는 롤러(50)가 배관(P)의 내주면과 접촉되는 보조가이드(40)와; 배관(P)의 내주면과 접촉으로 인해 변화되는 가이드링크(20)의 회전량에 따른 자속의 변화를 감지하도록 축핀(14) 내부에 내장되는 홀센서(70);로 이루어진다.
Abstract:
PURPOSE: A seismic monitoring system is provided to rapidly confirm and measure an earthquake to precisely predict damages due to the earthquake for coping effectively with the tense situation and store the seismic wave data semi-permanently for future investigation. CONSTITUTION: A seismic monitoring system includes a seismic wave monitoring unit for sensing generation of seismic and measuring the movement of ground by acceleration unit, and a seismic wave receiving part for analyzing the acceleration data of the ground, filtering seismic components of natural frequency band at which a supply maintenance office is weakest, performing a vector synthesizing of a horizontal two components(south and north, east and west) and a vertical one component to compute a maximum ground acceleration, determining whether the movement of the ground is an earthquake or a simple impact, analyzing seismic response characteristics and comparing a state of a gas supply management office with a preset value if the movement is determined to be the earthquake, and storing the data and transmitting a seismic alarm, the maximum ground acceleration and a spectrum intensity to a control part.