KR20110035304A - Eddy current test probe for tube of heat exchanger - Google Patents

Eddy current test probe for tube of heat exchanger Download PDF

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KR20110035304A
KR20110035304A KR1020090092951A KR20090092951A KR20110035304A KR 20110035304 A KR20110035304 A KR 20110035304A KR 1020090092951 A KR1020090092951 A KR 1020090092951A KR 20090092951 A KR20090092951 A KR 20090092951A KR 20110035304 A KR20110035304 A KR 20110035304A
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eddy current
customs
inspection
heat exchanger
camera
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KR1020090092951A
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Korean (ko)
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김태주
김재동
김창수
조용배
이승표
정남두
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한국수력원자력 주식회사
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8803—Visual inspection
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8806—Specially adapted optical and illumination features
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
    • G01N27/9013—Arrangements for scanning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
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  • Chemical Kinetics & Catalysis (AREA)
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  • Signal Processing (AREA)
  • Engineering & Computer Science (AREA)
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  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

PURPOSE: An inspection apparatus for a tube of a heat exchanger is provided to simultaneously perform an eddy current inspection and a manual inspection and to accurately photograph the damaged part of a tube. CONSTITUTION: An inspection apparatus for a tube of a heat exchanger comprises an eddy current probe, a camera(32), an LED(33), and a manual inspection part(20). The eddy current probe is inserted into a tube and receives a signal from an eddy current test part. The eddy current probe transmits an electric signal to the eddy current test part. The camera is installed in the front end of the eddy current probe and photographs the inside the tube. The LED lights the photographed area of the camera. The manual inspection part displays the photographed image on a screen.

Description

열교환기 세관의 검사장치{Eddy current test probe for tube of heat exchanger}Eddy current test probe for tube of heat exchanger}

본 발명은 열교환기 세관의 검사장치에 관한 것으로, 보다 상세하게는 와전류검사와 육안검사를 동시에 수행할 수 있는 열교환기 세관의 검사장치에 관한 것이다.The present invention relates to an inspection device for heat exchanger customs, and more particularly, to an inspection device for heat exchanger customs that can simultaneously perform eddy current inspection and visual inspection.

일반적으로, 발전소의 증기발생기와 같은 다양한 형태의 열교환기는 다수의 세관에 의하여 열교환이 이루어진다. 상기 다수의 세관은 다양한 수화학적인 환경, 세관 내외부측의 냉각재와 급수 흐름에 의한 유동발생, 슬러지와 같은 2차 생성물 축적 등에 의해 다양한 종류의 경년열화 결함이 발생하게 된다.In general, various types of heat exchangers such as steam generators of power plants are heat exchanged by a plurality of customs. In the plurality of customs, various kinds of deterioration defects are generated by various hydrochemical environments, flows caused by coolant and feedwater flows in and out of customs, and secondary product accumulation such as sludge.

이와 같은 결함들을 효과적으로 검출하기 위하여 비파괴검사방법 중 하나인 와전류검사법(Eddy Current Test)을 수행한다. In order to detect such defects effectively, Eddy Current Test, one of the non-destructive testing methods, is performed.

와전류검사법을 수행하기 위하여 와전류탐촉자를 세관에 넣어 그 세관을 통해 이동하면서 세관 내경의 미세한 직경변화, 이물질, 제작시 보수된 부위에서 발생하는 복합결함신호, 곡관부 및 튜브시트와 튜브 용접부에서의 결함등을 전기적인 신호로 변환하여 나타낸다. In order to perform the eddy current test, the eddy current probe is placed in the tubules and moved through the tubules. And the like are converted into electrical signals.

이와 같은 와전류탐촉자의 전기적인 신호를 평가자가 해석하고 있으며, 따라서 그 평가자간 다양한 의견 차이가 발생할 수 있다.The evaluator interprets the electrical signal of the eddy current detector. Therefore, various opinion differences may occur between the evaluators.

세관 내면의 이상신호에 의해 평가자간 차이를 좁힐 수 없거나 확인이 필요한 경우에는 육안검사를 위해 와전류탐촉자를 세관으로부터 제거하고, 다시 파이버스코프(fiber scope) 등의 육안검사장치를 세관에 삽입하여 확인하게 된다. If the difference between evaluators cannot be narrowed due to abnormal signal inside the customs or if confirmation is necessary, remove the eddy current probe from the customs for visual inspection and insert a visual inspection device such as a fiber scope into customs to check. do.

그러나 파이버스코프는 상기 와전류탐촉자와는 다르게 그 직경이 세관의 내경과 일치하지 않기 때문에 세관에 삽입되었을 때, 흔들림이 발생하여 손상의 원인을 확인하기 어렵고, 정확한 위치의 판단이 쉽지 않은 문제점이 있었다.However, unlike the eddy current probe, the fiber scope has a problem in that its diameter does not coincide with the inner diameter of the capillary tube, so when it is inserted into the tubule, it is difficult to identify the cause of the damage due to shaking, and it is not easy to determine the exact position.

즉, 와전류탐촉자의 전기적인 신호가 손상이 있는 것으로 해석되는 위치와 현재의 파이버스코프의 위치를 정확하게 일치시킬 수 없어 육안검사의 신뢰성이 저하되는 문제점이 있었다.That is, there is a problem that the reliability of visual inspection is deteriorated since the electrical signal of the eddy current detector cannot be exactly matched with the position of the current fiber scope.

또한, 육안검사를 위해 와전류검사용 와전류탐촉자를 제거해야 하기 때문에 작업자가 방사능 구역에서 작업하는 시간이 길어져 방사능 피폭의 위험이 더 있으며, 작업시간이 많이 소요되고 비용이 증가하는 문제점이 있었다.In addition, because the eddy current probe for the eddy current inspection to remove for the visual inspection, the operator has a long time to work in the radioactive zone, there is a risk of radiation exposure, there is a problem that takes a long time and increases the cost.

상기와 같은 문제점을 감안한 본 발명이 해결하고자 하는 과제는, 와전류검사와 함께 육안검사도 동시에 수행할 수 있는 열교환기 세관의 검사장치를 제공함에 있다.The problem to be solved by the present invention in view of the above problems is to provide an inspection device for heat exchanger customs that can be performed simultaneously with the eddy current inspection and visual inspection.

또한 육안검사시 세관과의 직경 불일치를 해소하여 정확한 육안 검사가 가능하며, 와전류 검사에 의해 손상된 부분을 정확하게 육안 검사할 수 있는 열교환기 세관의 검사장치를 제공함에 있다.In addition, it is possible to precisely inspect the naked eye by eliminating the diameter mismatch with the customs during visual inspection, and to provide an inspection device for the heat exchanger customs that can visually inspect the damaged part by the eddy current inspection.

상기와 같은 과제를 해결하기 위한 본 발명 열교환기 세관의 검사장치는, 세관 내에 삽입되어 와전류시험부의 신호를 공급받아 상기 세관의 상태에 따른 전기신호를 상기 와전류시험부로 송신하는 와전류탐촉자와, 상기 와전류탐촉자의 선단부에 설치되어 상기 와전류탐촉 위치와 동일 범위의 세관 내부를 촬영하는 카메라와, 상기 카메라의 촬영 영역을 조명하는 엘이디와, 상기 카메라의 촬영 영상을 화면에 표시하는 육안검사부를 포함한다.The inspection apparatus of the heat exchanger customs tube of the present invention for solving the above problems, the eddy current probe is inserted into the customs tube receives the eddy current test unit signal and transmits an electrical signal according to the state of the custom tube to the eddy current test unit, the eddy current It is installed on the tip of the probe includes a camera for capturing the interior of the customs within the same range as the eddy current probe position, an LED for illuminating the photographing area of the camera, and a visual inspection unit for displaying the captured image of the camera on the screen.

본 발명 열교환기 세관의 검사장치는, 와전류탐촉자의 선단부에 카메라와 어두운 세관 내에서도 밝은 영상을 얻을 수 있도록 엘이디 조명을 구비하여, 와전류 검사에 의한 손상부를 정확하게 촬영하여 육안검사가 가능하여 검사의 신뢰성을 향상시킬 수 있는 효과가 있다.The heat exchanger customs inspection device of the present invention is equipped with an LED illumination at the tip of the eddy current probe to obtain a bright image even in the dark customs and the camera, it is possible to visually inspect the damage by the eddy current inspection to ensure the reliability of the inspection There is an effect that can be improved.

또한 종래 파이버스코프와 세관의 직경 차이에 의한 흔들림 발생을 방지하여 정확한 육안검사가 가능하며, 와전류검사와 육안검사를 동시에 수행할 수 있어 검사시간을 단축할 수 있으며, 종래와 같이 와전류탐침을 제거한 후 다시 육안검사장비를 세관에 삽입할 필요가 없어져 방사능 피폭으로 부터 보다 안전한 작업환경을 제공할 수 있는 효과가 있다.In addition, accurate visual inspection is possible by preventing the occurrence of shaking due to the difference in diameter between the conventional fiber scope and the customs. The eddy current test and the visual test can be performed at the same time, and the inspection time can be shortened. Again, there is no need to insert visual inspection equipment into the customs, thereby providing a safer working environment from radiation exposure.

이하, 상기와 같이 구성되는 본 발명의 바람직한 실시예에 따른 열교환기 세관의 검사장치의 구성과 작용을 첨부한 도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings, the configuration and operation of the inspection device of the heat exchanger tube according to a preferred embodiment of the present invention configured as described above will be described in detail.

도 1은 본 발명의 제1실시예에 따른 열교환기 세관의 검사장치의 구성도이다.1 is a configuration of the inspection device of the heat exchanger customs according to the first embodiment of the present invention.

도 1을 참조하면 본 발명의 제1실시예에 따른 열교환기 세관의 검사장치는, 와전류검사신호를 출력하고, 수신되는 전기신호를 수신하여 표시하는 와전류검사부(10)와, 모니터를 포함하여 수신되는 영상신호를 처리 및 표시하는 육안검사부(20)와, 상기 와전류검사부(10)의 와전류검사신호를 수신하여 세관의 직경, 이물의 축적 등의 변화에 따라 변화되는 상기 전기신호를 출력함과 아울러 조명이 되는 환경에서 상기 세관의 내부를 촬영하여 상기 육안검사부(20)로 송신하는 촬영 및 와전류 검출부(30)를 포함한다.Referring to FIG. 1, an inspection apparatus for a heat exchanger tube according to a first embodiment of the present invention includes an eddy current inspection unit 10 for outputting an eddy current inspection signal, receiving and displaying a received electrical signal, and a monitor. The visual inspection unit 20 for processing and displaying a video signal to be processed, and the eddy current inspection signal of the eddy current inspection unit 10 to receive the output of the electrical signal that changes according to changes in the diameter of the customs, accumulation of foreign matter, etc. It includes a photographing and eddy current detection unit 30 for photographing the interior of the customs in the environment to be illuminated and transmitted to the visual inspection unit 20.

상기 촬영 및 와전류 검출부(30)는 본체(31)의 선단부에 구비되는 카메라(32)와, 상기 카메라(32)의 촬영영역을 조명하는 다수의 엘이디(33)와, 상기 카메라(32)의 후단에 위치하여 상기 와전류검사신호를 상기 세관의 상태에 따라 변경하여 전기신호로서 출력하는 차동 코일(differential coils, 34)과, 상기 본체(31)의 후단에서 상기 와전류검사부(10) 및 육안검사부(20)에 연결되는 신호라인을 내장하며 상기 본체(31)를 세관의 내측으로 이동시킬 수 있도록 절곡가능한 연결부(35)를 포함한다.The photographing and eddy current detector 30 includes a camera 32 provided at the front end of the main body 31, a plurality of LEDs 33 for illuminating the photographing area of the camera 32, and a rear end of the camera 32. Differential coils (34) for changing the eddy current inspection signal according to the state of the customs and outputting it as an electrical signal, and the eddy current inspection unit (10) and the visual inspection unit (20) at the rear end of the main body (31). It includes a signal line connected to the) and bendable connecting portion 35 to move the main body 31 to the inside of the customs.

이하, 상기와 같이 구성되는 본 발명의 제1실시예에 따른 열교환기 세관의 검사장치의 구성과 작용을 보다 상세히 설명한다.Hereinafter, the configuration and operation of the inspection device of the heat exchanger tube according to the first embodiment of the present invention configured as described above in more detail.

먼저 작업자는 상기 촬영 및 와전류 검출부(30)의 본체(31)를 열교환기의 세관에 삽입한다. 상기 촬영 및 와전류 검출부(30)의 본체(31)의 선단부에는 카메라(32)가 엘이디(33)의 조명에 의해 우수한 영상을 촬영할 수 있으며, 그 본체(31)는 작업자가 연결부(35)를 그 세관으로 밀어 넣어 이동시킨다.First, the operator inserts the main body 31 of the photographing and eddy current detection unit 30 into the tubule of the heat exchanger. At the tip of the main body 31 of the photographing and eddy current detection unit 30, the camera 32 can capture an excellent image by the illumination of the LED 33, and the main body 31 is connected to the operator 35 by the operator. Push into customs to move.

상기 엘이디(33)는 카메라(32)의 렌즈 주변에서 원형으로 배치되는 것이 바람직하다. 이는 세관이 원통형 관으로 일부에서만 엘이디(33)가 조명되는 경우 명암이 발생하여 미세한 손상을 촬영하기 어렵게 되기 때문이다.The LED 33 is preferably arranged in a circle around the lens of the camera 32. This is because when the LED 33 is only partially illuminated by the tubular tubular tube, contrast occurs and it becomes difficult to photograph the fine damage.

이와 같이 본체(31)가 세관의 내부를 이동하면서 차동 코일(34)에는 상기 와전류검사부(10)의 와전류검사신호가 인가되어 그 차동 코일(34)에 흐르며, 그 차동 코일(34)은 세관의 미세한 내경의 직경 차이에 의해서도 그 와전류검사신호와는 다른 형태의 전기적인 신호를 상기 와전류검사부(10)로 보내게 된다.As the main body 31 moves inside the tubule, the eddy current test signal of the eddy current test unit 10 is applied to the differential coil 34 and flows to the differential coil 34, and the differential coil 34 is The small difference in the diameter of the inner diameter also sends an electrical signal different from the eddy current inspection signal to the eddy current inspection unit 10.

상기 차동 코일(34)은 세관 내외부의 마모결함, 직경의 미세 변화, 이물질, 슬러지, 제작결함, 관통결함 등 세관의 불연속성을 검사할 수 있다. The differential coil 34 may inspect the discontinuity of the tubules such as wear defects inside and outside the tubules, minute changes in diameter, foreign matter, sludge, fabrication defects, through defects, and the like.

상기와 같은 세관의 불연속성에 따른 전기신호의 변화는 와전류검사부(10)에서 표시되며, 작업자는 그 와전류검사부(10)에 수신되는 전기신호의 특성에 따라 해당 위치의 손상 종류 및 정도를 판단하게 된다.The change in the electrical signal according to the discontinuity of the customs is displayed in the eddy current inspection unit 10, the operator is to determine the type and extent of damage of the location according to the characteristics of the electrical signal received by the eddy current inspection unit 10. .

이때 손상의 종류 및 정도에 대한 판단이 용이하지 않거나, 작업자간에 서로 다른 판단을 하는 경우 상기 본체(31)의 선단부에 마련된 카메라(32)의 촬영영상을 직접 육안으로 확인하여 그 와전류검사결과를 확인할 수 있게 된다.In this case, it is not easy to judge the type and extent of the damage, or if the operator makes different judgments, check the captured image of the camera 32 provided at the front end of the main body 31 with the naked eye to check the eddy current test result. It becomes possible.

상기 카메라(32)의 위치와 상기 차동 코일(34)의 위치는 미차가 있는 것이나 세관의 길이 및 손상의 면적 등을 고려할 때에는 실질적으로 동일한 위치로 있는 것이며, 이에 따라 차동 코일(34)에 의해 손상 영역으로 검출된 세관의 내측의 손상여부 및 정보를 다시 육안으로 확인할 때, 그 차동 코일(24)의 검출영역과 카메 라(32)의 촬영영역을 일치시켜 시험의 신뢰성을 높일 수 있게 된다.The position of the camera 32 and the position of the differential coil 34 are different from each other, but are substantially the same position in consideration of the length of the customs and the area of damage, and thus the damage of the differential coil 34. When visually confirming the damage and the information of the inner side of the tubules detected as the area, the detection area of the differential coil 24 and the imaging area of the camera 32 can be matched to increase the reliability of the test.

또한 세관의 미세한 찌그러짐 등의 손상이 발생하여 상기 본체(31)가 삽입되지 않는 부분도 촬영하여 그 부분에서의 세관의 손상 종류 및 정도를 쉽게 확인할 수 있게 된다.In addition, a fine crush or damage of the customs can be generated to shoot the portion where the main body 31 is not inserted, it is possible to easily determine the type and extent of damage to the customs in that portion.

종래에는 와전류검사탐침이 삽입되지 않는 경우 그 와전류검사탐침을 세관으로부터 제거하고, 육안검사를 위한 파이버스코프를 다시 세관에 삽입해야 했으나, 본 발명에서는 외전류검사와 육안검사를 동시에 수행할 수 있게 되어 검사시간을 단축하며, 작업자의 방사능 피폭을 줄일 수 있게 된다.Conventionally, when the eddy current test probe is not inserted, the eddy current test probe has to be removed from the customs and a fiber scope for visual inspection has to be inserted back into the customs. However, in the present invention, the external current test and the visual test can be simultaneously performed. The inspection time is shortened and the radiation exposure of the worker can be reduced.

도 2는 본 발명의 제2실시예에 따른 열교환기 세관의 검사장치의 구성도이다.Figure 2 is a block diagram of the inspection device of the heat exchanger customs according to the second embodiment of the present invention.

도 2를 참조하면 본 발명의 제2실시예에 따른 열교환기의 세관 검사장치는, 다른 구성은 상기 도 1을 참조하여 상세히 설명한 본 발명의 제1실시예에 따른 열교환기의 세관 검사장치와 동일한 구성이며, 그 차동 코일(34)을 회전형 탐촉자인 회전형 탐색부(36)로 대체된다.2, the customs inspection device of the heat exchanger according to the second embodiment of the present invention, the other configuration is the same as the customs inspection device of the heat exchanger according to the first embodiment of the present invention described in detail with reference to FIG. Configuration, and the differential coil 34 is replaced by a rotary searcher 36 which is a rotary probe.

상기 회전형 탐색부(36)는 쉴드코일, 팬케이크코일 등을 포함하여 증기발생기의 튜브 시트와 세관 용접부 사이에서 슬러지 침적에 의해 발생되는 응력부식균열 등의 특정한 부위 및 정밀 확인 검사등을 수행할 수 있는 것이다.The rotary search unit 36 may perform a specific inspection and inspection such as a stress corrosion crack generated by sludge deposition between the tube sheet of the steam generator and the tubular welded portion of the steam generator, including a shield coil and a pancake coil. It is.

이와 같은 검사를 통해 세관의 손상을 조기에 검출할 수 있어 세관의 누설을 방지하고, 건전성을 확보할 수 있다.Through such inspection, damage to customs can be detected at an early stage, thereby preventing the leakage of customs and ensuring soundness.

도 3은 본 발명의 제3실시예에 따른 열교환기 세관의 검사장치의 구성도이다.3 is a configuration of the inspection device of the heat exchanger customs according to the third embodiment of the present invention.

도 3을 참조하면 본 발명의 제3실시예에 따른 열교환기 세관의 검사장치는, 다른 구성은 상기 도 1과 도 2를 각각 참조하여 상세히 설명한 본 발명의 제1실시예 및 제2실시예에 따른 열교환기 세관의 검사장치와 동일한 구성이며, 그 차동 코일(34) 또는 회전형 탐색부(36) 대신 배열된 팬케이크 코일(array pancake coil,37)을 사용한다.Referring to Figure 3, the inspection device of the heat exchanger customs tube according to the third embodiment of the present invention, the other configuration in the first embodiment and the second embodiment of the present invention described in detail with reference to Figs. The same configuration as that of the inspection device of the heat exchanger tube according to the present invention uses an array pancake coil 37 arranged instead of the differential coil 34 or the rotary searcher 36.

상기 배열된 팬케이크 코일(37)은 와전류 검사속도가 늦은 단점이 있지만, 상기 차동 코일(34)이나 회전형 탐색부(36)가 각각 가지는 장점을 모두 포함하고 있는 것이다.The arranged pancake coil 37 has a disadvantage in that the eddy current inspection speed is slow, but includes all the advantages of the differential coil 34 and the rotary search unit 36, respectively.

이와 같이 본 발명은 와전류검사를 위한 와전류탐촉자의 선단부에 카메라(32)와, 그 카메라(32)가 촬상하는 세관의 내부를 조명하는 엘이디(33)를 더 포함시켜, 와전류검사와 육안검사를 동시에 수행할 수 있게 되며, 그 서로 다른 두 검사의 위치를 동기화하여 검사의 신뢰성을 향상시킬 수 있게 된다.As described above, the present invention further includes a camera 32 at the tip of the eddy current probe for eddy current inspection, and an LED 33 for illuminating the inside of the capillary imaged by the camera 32 to simultaneously perform eddy current inspection and visual inspection. It can be performed, and the reliability of the test can be improved by synchronizing the positions of the two different tests.

도 1은 본 발명의 제1실시예에 따른 열교환기 세관의 검사장치의 구성도이다.1 is a configuration of the inspection device of the heat exchanger customs according to the first embodiment of the present invention.

도 2는 본 발명의 제2실시예에 따른 열교환기 세관의 검사장치의 구성도이다.Figure 2 is a block diagram of the inspection device of the heat exchanger customs according to the second embodiment of the present invention.

도 3은 본 발명의 제3실시예에 따른 열교환기 세관의 검사장치의 구성도이다.3 is a configuration of the inspection device of the heat exchanger customs according to the third embodiment of the present invention.

*도면의 주요 부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

10:와전류검사부 20:육안검사부10: eddy current inspection unit 20: visual inspection

30:촬영 및 와전류 검출부 31:본체30: photographing and eddy current detector 31: the body

32:카메라 33:엘이디32: Camera 33: LED

34:차동 코일 35:연결부34: differential coil 35: connection

36:회전형 탐색부 37:배열된 팬케이크 코일 36: rotary search unit 37: arrayed pancake coil

Claims (3)

세관 내에 삽입되어 와전류시험부의 신호를 공급받아 상기 세관의 상태에 따른 전기신호를 상기 와전류시험부로 송신하는 와전류탐촉자;An eddy current probe inserted into a customs tube and receiving a signal of the eddy current test unit to transmit an electrical signal according to the state of the customs to the eddy current test unit; 상기 와전류탐촉자의 선단부에 설치되어 상기 와전류탐촉 위치와 동일 범위의 세관 내부를 촬영하는 카메라; A camera installed at the distal end of the eddy current probe to capture the inside of the customs inside the same range as the eddy current probe position; 상기 카메라의 촬영 영역을 조명하는 엘이디; 및An LED illuminating a photographing area of the camera; And 상기 카메라의 촬영 영상을 화면에 표시하는 육안검사부를 포함하는 열교환기 세관의 검사장치.Inspection device of the heat exchanger customs comprising a visual inspection to display the captured image of the camera on the screen. 제1항에 있어서,The method of claim 1, 상기 와전류탐촉자는,The eddy current probe, 차동 코일, 회전탐촉부 또는 배열된 팬케이크 코일을 구비하는 것을 특징으로 하는 열교환기 세관의 검사장치.Device for inspecting heat exchanger customs, characterized in that it comprises a differential coil, a rotary probe or an array of pancake coils. 제1항 또는 제2항에 있어서,The method according to claim 1 or 2, 상기 엘이디는,The LED is, 상기 카메라의 렌즈 주변에서 원형으로 다수 배치되는 것을 특징으로 하는 열교환기 세관의 검사장치.Apparatus for inspection of heat exchanger customs, characterized in that a plurality of circularly arranged around the lens of the camera.
KR1020090092951A 2009-09-30 2009-09-30 Eddy current test probe for tube of heat exchanger KR20110035304A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101996760B1 (en) * 2018-10-17 2019-07-04 한전케이피에스 주식회사 A probe device for detecting defects in a steam generator tube and for detecting foreign objects around the steam generator tube
KR20200007116A (en) 2018-07-11 2020-01-22 주식회사 영국전자 FBHE Fluidization Monitoring System
CN114252664A (en) * 2020-09-22 2022-03-29 细美事有限公司 Probe station
KR20220106588A (en) * 2021-01-22 2022-07-29 한국수력원자력 주식회사 Flexible arrayed and current probe for non-destructive testing of welds

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200007116A (en) 2018-07-11 2020-01-22 주식회사 영국전자 FBHE Fluidization Monitoring System
KR101996760B1 (en) * 2018-10-17 2019-07-04 한전케이피에스 주식회사 A probe device for detecting defects in a steam generator tube and for detecting foreign objects around the steam generator tube
CN114252664A (en) * 2020-09-22 2022-03-29 细美事有限公司 Probe station
CN114252664B (en) * 2020-09-22 2024-02-20 细美事有限公司 Probe station
KR20220106588A (en) * 2021-01-22 2022-07-29 한국수력원자력 주식회사 Flexible arrayed and current probe for non-destructive testing of welds

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