Probe structure capable of being used for intertubular automatic video inspection of steam generator

A steam generator and video technology, which is applied in the directions of instruments, scientific instruments, and the indication of the working conditions of boilers, can solve the problems of high requirements for operating skills, uneven video inspection quality, and increased collective dose of personnel, and achieves a solid structure. , compact structure, easy to operate

Pending Publication Date: 2019-03-29
RES INST OF NUCLEAR POWER OPERATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the manual inspection method has the advantages of simple tool structure and good adaptability, it requires inspectors to work near the SG for a long time during the inspection, which will cause a significant increase in the collective dose of personnel
At the same time, manual video inspection requires high operational skills, and the quality of video inspection varies according to individual skills.

Method used

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  • Probe structure capable of being used for intertubular automatic video inspection of steam generator
  • Probe structure capable of being used for intertubular automatic video inspection of steam generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 1 As shown, a probe structure that can be used for automatic video inspection between steam generator tubes includes two parts: the probe end 6 and the probe steel strip 2 . The probe end 6 is fixed on the left end of the probe steel band 2, and is used for video inspection of the cleanliness of the inter-tube area of ​​the heat transfer tube 12 inside the steam generator 13, and at the same time grasps the foreign matter found. The probe steel belt is used to transport the probe end 6 to the video inspection position, and protect the cables connected to the probe end 6 .

[0034] The probe end 6 includes a probe end housing, a fastening screw 7 , a downward lens 8 , an LED light source 9 , a foreign object grasping channel 10 and a forward lens 11 . The downward lens 8, the LED light source 9, the foreign matter grasping channel 10 and the forward lens 11 are arranged inside the probe end shell. The left end of the probe end shell is provided with a pl...

Embodiment 2

[0043] Such as figure 1 As shown, a probe structure that can be used for automatic video inspection between steam generator tubes includes two parts: the probe end 6 and the probe steel strip 2 . The probe end 6 is fixed on the left end of the probe steel band 2, and is used for video inspection of the cleanliness of the inter-tube area of ​​the heat transfer tube 12 inside the steam generator 13, and at the same time grasps the foreign matter found. The probe steel belt is used to transport the probe end 6 to the video inspection position, and protect the cables connected to the probe end 6 .

[0044] The probe end 6 includes a probe end housing, a fastening screw 7 , a downward lens 8 , an LED light source 9 , a foreign object grasping channel 10 and a forward lens 11 . The downward lens 8, the LED light source 9, the foreign matter grasping channel 10 and the forward lens 11 are arranged inside the probe end shell. The left end of the probe end shell is provided with a pl...

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PUM

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Abstract

The invention belongs to the technical field of maintenance of a steam generator of a nuclear power plant, and particularly relates to a probe structure capable of being used for an intertubular automatic video inspection of the steam generator. The probe for the intertubular automatic video inspection of the steam generator is compact in size, firm in structure, easy to operate, and is intended to replace the conventional video endoscope to realize the intertubular automatic video inspection of the steam generator. The probe further comprises a foreign matter grabbing channel, which can grabthe found foreign matter during the video inspection. The probe comprises two parts of a probe end and a probe steel strip. The probe end is fixed at the left end of the probe steel strip, and is usedfor performing a cleanness video inspection on the intertubular areas of the heat transferring tubes inside the steam generator, and at the same time, grasping the found foreign matter. The probe steel strip is used for conveying the probe end to a video inspection position, and protecting the cable connecting the probe end.

Description

technical field [0001] The invention belongs to the technical field of maintenance of steam generators in nuclear power plants, and in particular relates to a probe structure that can be used for automatic video inspection between steam generator tubes. Background technique [0002] In the steam generator of nuclear power plant, referred to as SG, the heat transfer tube is an important pressure boundary of the primary circuit. Through the video inspection of the cleanliness of the SG secondary side, you can understand the distribution of sludge on the SG secondary side, check whether there are foreign objects, let the power station operators know the status of the SG in time, and evaluate whether the current cleanliness meets the requirements for safe operation of the power station , and take follow-up relevant measures based on this to eliminate potential hazards in time. [0003] At present, the domestic SG secondary side cleanliness video inspection work uses simple vide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/88G01N21/01F22B37/38
CPCF22B37/38G01N21/01G01N21/88
Inventor 刘一博李杰毛琦李文辉程檀熊前山雷霆梁云雷
Owner RES INST OF NUCLEAR POWER OPERATION
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