WO2021223435A1 - Procédé et dispositif pour déterminer les limites d'un renflement d'un revêtement en acier d'une enceinte de confinement de centrale nucléaire - Google Patents

Procédé et dispositif pour déterminer les limites d'un renflement d'un revêtement en acier d'une enceinte de confinement de centrale nucléaire Download PDF

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Publication number
WO2021223435A1
WO2021223435A1 PCT/CN2020/134723 CN2020134723W WO2021223435A1 WO 2021223435 A1 WO2021223435 A1 WO 2021223435A1 CN 2020134723 W CN2020134723 W CN 2020134723W WO 2021223435 A1 WO2021223435 A1 WO 2021223435A1
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WO
WIPO (PCT)
Prior art keywords
bulge
boundary
detection module
ultrasonic detection
determining
Prior art date
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PCT/CN2020/134723
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English (en)
Chinese (zh)
Inventor
何锐
张国军
李少纯
沈东明
赵健
陈威
张波
张复彬
卜玉兵
Original Assignee
中广核工程有限公司
中国广核集团有限公司
中国广核电力股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 中广核工程有限公司, 中国广核集团有限公司, 中国广核电力股份有限公司 filed Critical 中广核工程有限公司
Publication of WO2021223435A1 publication Critical patent/WO2021223435A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C17/00—Monitoring; Testing ; Maintaining
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/023—Solids
    • G01N2291/0234—Metals, e.g. steel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Definitions

  • the invention belongs to the technical field of nuclear power. More specifically, the invention relates to a method and a device for determining the bulging boundary of the steel lining of the containment vessel of a nuclear power plant.
  • the nuclear power plant containment is a cylindrical prestressed reinforced concrete structure with a quasi-spherical dome. It is the last barrier to prevent fission products from fuel and primary radioactive materials from entering the environment. After a loss of water accident (LOCA: Loss of Coolant Accident) occurs in the reactor, a large amount of radioactivity and high-temperature and high-pressure steam-water mixture released can be contained and isolated by the containment to prevent harm to residents around the nuclear power plant.
  • LOCA Loss of Coolant Accident
  • the steel lining is a layer of steel plate attached to the inner wall of the containment, which is an important guarantee for the tightness of the containment.
  • the steel lining is connected to the concrete structure of the containment by rivets welded to the steel lining.
  • the steel lining fits well with the concrete and will not cause hollowing.
  • the steel lining may peel off from the concrete structure and cause bulging. Bulges are the most common type of defects in steel linings, which are detrimental to the integrity of the containment. Bulges that are too large or too high have a serious impact on the safety of the third nuclear safety barrier and need to be inspected, recorded, and tracked.
  • the containment test is widely used to simulate and verify the containment capability of the containment under the conditions of a large break loss of water (LOCA) accident. It is of great significance for ensuring the operation of nuclear power plants, during the unit construction phase and the unit operation phase All need to be tested.
  • An important part of the internal inspection of the inner surface of the containment vessel before and after CTT is to confirm the boundary of the steel lining bulge, so as to track the bulge during the life of the containment and evaluate the performance of the steel lining.
  • the prior art usually uses a mallet to find the boundary of the drum kit by manually tapping the sound.
  • the specific operation steps are as follows:
  • the purpose of the present invention is to overcome the defects of the prior art and provide an efficient and reliable method and device for determining the bulging boundary of the steel lining of the containment vessel of a nuclear power plant.
  • the present invention provides a method for determining the bulging boundary of the steel lining of the containment vessel of a nuclear power plant, which includes the following steps:
  • a handheld electronic mallet equipped with a single-chip microcomputer, an ultrasonic detection module and an inkjet module moves area by area within the boundary of the containment steel lining.
  • the ultrasonic detection module is controlled by the single-chip microcomputer to determine the first bulge boundary point
  • the inkjet module is controlled by the single-chip microcomputer.
  • step 2) Repeat step 2) until all bulge boundary points are determined and the bulge boundary is determined.
  • the electronic mallet includes a mallet head and a handle assembled on the mallet head.
  • the ultrasonic detection module includes a first ultrasonic detection module and a second ultrasonic detection module located on both sides of the inkjet module.
  • the first ultrasonic detection module and the second ultrasonic detection module are both equipped with an ultrasonic transmitting element and an ultrasonic listening element.
  • the echo analysis determines whether there are bulges near the first ultrasonic detection module and the second ultrasonic detection module.
  • the first ultrasonic detection module and the second ultrasonic detection module are respectively provided with a first bulge indicator light and a second bulge indicator light, displaying the first Whether the ultrasonic detection module and the second ultrasonic detection module determine the bulge.
  • the corresponding first bulge indicator or second bulge indicator will change In the first color, if there is no drum kit at the position where the first drum kit indicator light or the second drum kit indicator light is located, the corresponding first drum kit indicator light or the second drum kit indicator light will change to the second color.
  • the first bulge indicator light and the second bulge indicator light are both the first color
  • the first ultrasonic detection module and the second ultrasonic detection module of the electronic mallet are determined.
  • the ultrasonic detection modules are both inside the bulge boundary; if the first bulge indicator light and the second bulge indicator light are both in the second color, it is determined that the first ultrasonic detection module and the second ultrasonic detection module of the electronic mallet are both outside the bulge boundary; if If the first indicator light and the second indicator light have the first color and the second color, it is determined that the electronic mallet is near the boundary of the bulge.
  • the single-chip microcomputer analyzes that the electronic mallet is near the boundary, it controls the inkjet module for inkjet marking.
  • the time interval between two adjacent inkjet marks is not less than 500ms.
  • the present invention also provides a device for determining the bulge boundary of the containment steel lining of a nuclear power plant.
  • the device for determining the bulge boundary of the containment steel lining of a nuclear power plant is an electronic mallet including a handle and a hammer head. It includes a single-chip microcomputer, an inkjet module, a first ultrasonic detection module and a second ultrasonic detection module located on both sides of the inkjet module.
  • the first ultrasonic detection module and the second ultrasonic detection module both include an ultrasonic transmitting element and an ultrasonic listening element.
  • the echo analysis determines whether there is bulging near the first ultrasonic detection module and the second ultrasonic detection module.
  • the first ultrasonic detection module and the second ultrasonic detection module are respectively provided with a first bulge indicator light and a second bulge indicator light, displaying the first Whether the ultrasonic detection module and the second ultrasonic detection module determine the bulge.
  • the corresponding first bulge indicator or second bulge indicator will change In the first color, if there is no drum kit at the position where the first drum kit indicator light or the second drum kit indicator light is located, the corresponding first drum kit indicator light or the second drum kit indicator light will change to the second color.
  • the first bulge indicator light and the second bulge indicator light are both the first color
  • the first ultrasonic detection module and the second ultrasonic detection module of the electronic mallet are determined.
  • the ultrasonic detection modules are both inside the bulge boundary; if the first bulge indicator light and the second bulge indicator light are both in the second color, it is determined that the first ultrasonic detection module and the second ultrasonic detection module of the electronic mallet are both outside the bulge boundary; if If the first indicator light and the second indicator light have the first color and the second color, it is determined that the electronic mallet is near the boundary of the bulge.
  • the inkjet module is controlled to inkjet marking.
  • the time interval between two adjacent inkjet marks is not less than 500ms.
  • the method for determining the bulge boundary of the containment steel lining of the nuclear power plant of the present invention combines the bulge boundary point recognition function and the marking function, which can significantly improve the work efficiency, improve the recognition accuracy of the bulge boundary, and reduce the technical level of the inspectors. Require.
  • the invention discloses a device for determining the bulging boundary of the steel lining of the containment vessel of a nuclear power plant.
  • Figure 1 is a schematic diagram of the structure of the device for determining the bulging boundary of the steel lining of the containment vessel of a nuclear power plant according to the present invention.
  • Figures 2 and 3 are schematic diagrams of the device for determining the boundary of the bulge of the containment steel lining of the nuclear power plant according to the present invention is located on the bulge.
  • Fig. 4 is a schematic diagram of the method for determining the bulging boundary of the steel lining of the nuclear power plant containment vessel according to the present invention.
  • the present invention provides a device for determining the bulge boundary of the containment steel lining of a nuclear power plant.
  • the device for determining the bulge boundary of the containment steel lining of a nuclear power plant is an electronic mallet 10 including a handle 100 and a hammer head 102, wherein The hammer head 102 includes a single-chip microcomputer (not shown), an inkjet module 108, and a first ultrasonic detection module 104 and a second ultrasonic detection module 106 located on both sides of the inkjet module 108.
  • the first ultrasonic detection module 104 and the second ultrasonic detection module 106 have the same structure, and both include an ultrasonic transmitting element 110 and an ultrasonic listening element 112.
  • the single-chip microcomputer determines the first ultrasonic detection module 104 and the second ultrasonic wave according to the echo analysis of the ultrasonic listening element 112. Detect whether there is bulging near the module 106.
  • the working principle of the ultrasonic detection modules 104, 106 is as follows: when the ultrasonic detection modules 104, 106 of the electronic mallet 10 are attached to the steel lining, the ultrasonic emitting element 110 emits to the steel lining Ultrasound, the steel-lined steel plate and concrete bonding surface will reflect the ultrasonic, and the reflected wave is recognized by the ultrasonic listening element 112. When the steel lining at the location of the ultrasonic detection module has a bulge and no bulge, the waveform of the ultrasonic echo will be significantly different.
  • the single-chip microcomputer inside the electronic mallet 10 can analyze whether there is a bulge near the ultrasonic detection modules 104 and 106 based on the echo.
  • the first ultrasonic detection module 104 and the second ultrasonic detection module 106 are respectively provided with a first bulge indicator light (not shown) and a second bulge indicator light (not shown), indicating that the first Whether the ultrasonic detection module 104 and the second ultrasonic detection module 106 determine a bulge. If the first ultrasonic detection module 104 or the second ultrasonic detection module 106 finds a bulge, the corresponding first bulge indicator or second bulge indicator will change to the first color (such as red). If the first bulge indicator or the second bulge indicator is If there is no drum kit at the position of the indicator light, the corresponding first drum kit indicator or second drum kit indicator will change to the second color (such as green).
  • the single-chip microcomputer controls the inkjet module 108 for inkjet marking, that is, the signal is used to control the inkjet module 108 for inkjet marking.
  • the inkjet function of the inkjet module 108 of the electronic mallet 10 is not continuous, and the next inkjet can be performed at least 500 ms after one inkjet.
  • the purpose of the time interval setting is to avoid continuous ejection of the electronic mallet 10 and improve the accuracy of boundary positioning.
  • the present invention also provides a method for determining the bulge boundary of the steel lining of the containment vessel of a nuclear power plant, which includes the following steps:
  • the handheld electronic mallet 10 equipped with a single-chip microcomputer (not shown), ultrasonic detection modules 104, 106 and inkjet module 108 moves area by area within the boundary of the containment steel lining, and the ultrasonic detection modules 104, 106 are controlled by the single-chip microcomputer to determine the first A bulge boundary point, and the ink-jet module 108 is controlled by a single-chip microcomputer to ink-jet mark; in the embodiment shown in FIG. 4, Pa-Pe are the determined boundary points.
  • step 2) Repeat step 2) until all bulge boundary points are determined and the bulge boundary is determined.
  • the electronic hammer 10 includes a hammer head 100 and a handle 102 assembled on the hammer head 100.
  • a single chip microcomputer, an ultrasonic detection module and an inkjet module 108 are arranged in the hammer head 100.
  • the ultrasonic detection module includes a first on both sides of the inkjet module 108.
  • the ultrasonic detection module 104 and the second ultrasonic detection module 106 are arranged in the hammer head 100.
  • the first ultrasonic detection module 104 and the second ultrasonic detection module 106 have the same structure, and both are provided with an ultrasonic transmitting element 110 and an ultrasonic listening element 112. Whether there is a bulge near the ultrasonic detection module 106.
  • the first ultrasonic detection module 104 and the second ultrasonic detection module 106 are respectively provided with a first bulge indicator light and a second bulge indicator light (not shown), which display whether the first ultrasonic detection module 104 and the second ultrasonic detection module 106 determine the bulge . If the first ultrasonic detection module 104 or the second ultrasonic detection module 106 finds a bulge, the corresponding first bulge indicator or second bulge indicator will change to the first color (red), if the first bulge indicator or the second bulge indicator If there is no drum kit at the position of the lamp, the corresponding first drum kit indicator or second drum kit indicator will change to the second color (green).
  • first bulge indicator light and the second bulge indicator light are both in the first color, it is determined that the first ultrasonic detection module 104 and the second ultrasonic detection module 106 of the electronic mallet 10 are both inside the bulge boundary; if the first bulge indicator light and If the second bulge indicator light is in the second color, it is determined that the first ultrasonic detection module 104 and the second ultrasonic detection module 106 of the electronic mallet 10 are both outside the bulge boundary; if one of the first bulge indicator light and the second bulge indicator light is If the first color is the second color, it is determined that the electronic mallet 10 is near the boundary of the bulge.
  • the single-chip microcomputer analyzes that the electronic mallet 10 is near the boundary, the single-chip microcomputer controls the inkjet module 108 to inkjet marks. It should be noted that the inkjet function of the inkjet module 108 of the electronic mallet 10 is not continuous, and the next inkjet can be performed at least 500 ms after one inkjet. The purpose of the time interval setting is to avoid continuous ejection of the electronic mallet 10 and improve the accuracy of boundary positioning.
  • the single-chip microcomputer will control the inkjet module 108 to mark the position as the bulge boundary;
  • both of the drum kit indicators will turn green, which means that this is not a drum kit and no inkjet mark is needed;
  • the electronic mallet 10 moves to P3, if the first drum kit indicator light (left side) turns red, the second drum kit indicator light (right side) turns green, and the inkjet mark;
  • the first drum kit indicator light and the second drum kit indicator light both turn red, which means that the electronic mallet 10 is inside the drum kit and does not require inkjet marking;
  • the method for determining the bulge boundary of the containment steel lining of the nuclear power plant of the present invention combines the bulge boundary point recognition function and the marking function, which can significantly improve work efficiency. Improve the recognition accuracy of the bulge boundary and reduce the requirements for the technical level of the inspectors.
  • the invention discloses a device for determining the bulging boundary of the steel lining of the containment vessel of a nuclear power plant.

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  • Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
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  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

L'invention concerne un procédé pour déterminer les limites d'un renflement d'un revêtement en acier d'une enceinte de confinement de centrale nucléaire, et un dispositif pour déterminer les limites d'un renflement d'un revêtement en acier d'une enceinte de confinement de centrale nucléaire. Le procédé comprend les étapes suivantes consistant à : 1) maintenir, à la main, un maillet électronique (10) pourvu d'un micro-ordinateur monopuce, d'un module de détection ultrasonore et d'un module à jet d'encre (108) pour le déplacer zone par zone dans les limites d'un revêtement en acier d'une enceinte de confinement, commander le module de détection ultrasonore au moyen du micro-ordinateur monopuce pour déterminer un premier point limite de renflement, et commander le module à jet d'encre (108) au moyen du micro-ordinateur monopuce pour pulvériser de l'encre et effectuer un marquage ; 2) déplacer le maillet électronique (10) à proximité du premier point limite de renflement, déterminer le point limite de renflement suivant, et commander le module à jet d'encre (108) au moyen du micro-ordinateur monopuce pour pulvériser de l'encre et effectuer un marquage ; et 3) répéter l'étape 2) jusqu'à ce que tous les points limites de renflement soient déterminés et que les limites d'un renflement soient déterminées. Par comparaison avec l'état de la technique, le procédé pour déterminer les limites d'un renflement d'un revêtement en acier d'une enceinte de confinement de centrale nucléaire intègre une fonction d'identification de points limites de renflement et une fonction de marquage, de telle sorte que l'efficacité de travail peut être remarquablement améliorée, la précision d'identification des limites d'un renflement est améliorée, et les exigences relatives au niveau de technicité du personnel de détection sont réduites.
PCT/CN2020/134723 2020-11-12 2020-12-09 Procédé et dispositif pour déterminer les limites d'un renflement d'un revêtement en acier d'une enceinte de confinement de centrale nucléaire WO2021223435A1 (fr)

Applications Claiming Priority (2)

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CN202011259187.9A CN112433000A (zh) 2020-11-12 2020-11-12 核电站安全壳钢内衬鼓包边界的确定方法和确定装置
CN202011259187.9 2020-11-12

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CN205844265U (zh) * 2016-06-20 2016-12-28 曹英 一种用于房产评估的便携式检测装置
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CN211179658U (zh) * 2019-12-17 2020-08-04 刘冰 一种用于房地产评估的空鼓检测器

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CN105510441B (zh) * 2015-12-22 2018-04-06 北京欧宁航宇检测技术有限公司 多通道组合探头联动检测方法
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0017744A1 (fr) * 1979-04-24 1980-10-29 Westinghouse Electric Corporation Assemblage d'inspection d'une cuve de réacteur en marche avec dispositif de centrage par ultrasons
JP2010145372A (ja) * 2008-12-22 2010-07-01 Toshiba Corp 超音波プローブ、プローブ着脱用移動台車、プローブ設置位置探索用移動台車、超音波プローブ着脱システム、および超音波プローブの取付方法
CN205844265U (zh) * 2016-06-20 2016-12-28 曹英 一种用于房产评估的便携式检测装置
CN207751935U (zh) * 2018-01-31 2018-08-21 南京国通建设工程咨询有限公司 可标记空鼓检测设备
CN109256225A (zh) * 2018-10-30 2019-01-22 中广核工程有限公司 一种核电站安全壳衬里缺陷检测系统、方法以及执行装置
CN211179658U (zh) * 2019-12-17 2020-08-04 刘冰 一种用于房地产评估的空鼓检测器
CN111208202A (zh) * 2020-03-18 2020-05-29 象山诺图超声波设备有限公司 一种住房验收使用的超声波检验标记装置

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