Plate type heat exchanger plate sheet crack imaging system
A technology of plate heat exchanger and imaging system, applied in instruments, scientific instruments, measuring devices, etc., can solve the problems of non-compliance with environmental protection requirements, easy detection of blind spots, long plate detection time, etc., and it is difficult to solve the missed detection rate. control effect
Inactive Publication Date: 2019-03-22
SHENYANG POLYTECHNIC UNIV +1
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Problems solved by technology
These two methods in the prior art have their own defects. The fluorescent ultraviolet transillumination method can only detect the penetrating cracks of the plate, and the inspectors are exposed to light radiation for a long time, which will cause visual fatigue, and blind spots are prone to appear in the inspection.
The penetrant detection method is only sensitive to open cracks. During the spraying process of the penetrant, the penetrant slides along the surface of the board to produce penetrant accumulation, and the cracks are easily covered up. In addition, the penetrant spraying and cleaning process will pollute the environment and do not meet environmental protection requirements. ;Long detection time for each plate, high cost
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[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. The specific embodiments described by the accompanying drawings are exemplary and are only used to explain the present invention rather than limit the present invention.
[0018] see Figures 1 to 2 , the plate crack imaging system of the plate heat exchanger of the present invention includes a plate carrying mechanism, a translation mechanism, an image acquisition device, and an image display device; through the movement of the translation mechanism, the image acquisition device and the plate move relatively to collect the Inspect the appearance image of the Pattern. The plate carrying mechanism supports the plates of the plate heat exchanger to be inspected, and cooperates with the translation mechanism to make the plates and the image acquisition device form relative motion.
[0019] The image acquisition device is composed of a camera, a len...
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The invention provides a plate type heat exchanger plate sheet crack imaging system, and relates to a technology for detecting the crack defect of a plate type heat exchanger. The system comprises a plate sheet bearing mechanism, a transverse moving mechanism, an image collecting device and an image display device, wherein the plate sheet bearing mechanism supports a plate type heat exchanger plate to be detected and is matched with the transverse moving mechanism, so that the plate sheet and the image collecting device can form the relative movement; or a roller conveying mechanism forms a transverse moving mechanism and carries the plate sheet, so that the plate sheet and the image collecting device form relative movement. The image collecting device collects the appearance image of theplate sheet to be detected, and converts the appearance image into a digital image in a computer; the image display device displays the appearance image of the plate surface; the crack image of the plate sheet is observed through a display screen of the computer. By using the technical scheme, an operator can clearly observe the crack existence on the computer display screen; the manual detectionin a posture of bending down on the plate sheet is not needed; the automatic detection of the plate sheet crack can also be realized, so that the defects of manual detection are also solved.
Description
technical field [0001] The invention relates to a technology for detecting crack defects of a plate heat exchanger, in particular to a plate crack imaging system for a plate heat exchanger. Background technique [0002] After the plates of the plate heat exchanger are pressed and formed, cracks may appear on the plates due to mold manufacturing, wear and raw material defects. At present, we mainly rely on the naked eye to check for cracks. Since the cracks that usually exist are mostly small cracks, the manual inspection cycle is long, which is easy to cause eye fatigue and affect the detection results. It varies from person to person. According to the energy industry standard NB / T47004.1-2017 (NB / T47004-2009) of the People's Republic of China promulgated by the National Energy Administration on December 27, 2017, according to the requirements of the industry standard, there are mainly two types of corrugated plate crack inspection in the prior art. Two methods: fluorescen...
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Login to View More IPC IPC(8): G01N21/88G01N21/01
CPCG01N21/01G01N21/88
Inventor 苑玮琦莫赤芒汤永华詹福才杨俊成王旭东姚凯郭明礼
Owner SHENYANG POLYTECHNIC UNIV