WO2018157398A1 - 一种微型可升降式视频检查装置 - Google Patents

一种微型可升降式视频检查装置 Download PDF

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Publication number
WO2018157398A1
WO2018157398A1 PCT/CN2017/075646 CN2017075646W WO2018157398A1 WO 2018157398 A1 WO2018157398 A1 WO 2018157398A1 CN 2017075646 W CN2017075646 W CN 2017075646W WO 2018157398 A1 WO2018157398 A1 WO 2018157398A1
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video inspection
cable
support base
miniature
fixed shaft
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PCT/CN2017/075646
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English (en)
French (fr)
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赵伟
李瑞霞
李彦伟
袁建中
刘波
朱性利
陈海林
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核动力运行研究所
中核武汉核电运行技术股份有限公司
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Priority to PCT/CN2017/075646 priority Critical patent/WO2018157398A1/zh
Publication of WO2018157398A1 publication Critical patent/WO2018157398A1/zh

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    • 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

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  • the invention relates to the field of nuclear power inspection equipment, and in particular to a miniature liftable video inspection device.
  • the main heat transfer system pipe branch support and hanger is the core equipment of the nuclear reactor. The vibration during operation will cause wear plate wear, support hanger offset, nut dropout and pipe wear, etc., which need to be checked frequently.
  • China's nuclear power plant mainstream reactor type main heat transfer system pipe branch pipe has 5 layers per row, each layer has 4 to 5 support hangers. Each branch hoisting a branch pipe, the distance between the horizontal pipe of the row and the hanger is small. Due to the compact space structure of the inspection and hanger, the support and hanger are staggered and the space is small. When the inspection area of the lower part of the hanger is directly visually inspected, it can only be observed from the passage after the insulation layer is removed. Only the top and bottom abutments and their accessories can be inspected.
  • the working space is narrow, the temperature is high (35 ⁇ 50 °C), and the irradiation dose rate is high in the working environment.
  • the steam generator manhole is opened, there is loose pollution, and the number of supporting hangers is large. The inspectors are inspecting the hangers.
  • the radiation dose is high, and the risk of surface contamination and internal pollution is high.
  • indirect visual inspection is used at home and abroad for the inspection of the integrity of the support and hanger.
  • the lower support and hanger of the Canadian CANDU stack is indirectly visualized using automated equipment (video inspection system) for inspection.
  • Serpentine robot from The lower part of the aisle enters for inspection, and after the failure of the snake-shaped robot, the hand-held long rod endoscope is used.
  • a telescopic video inspection device as shown in FIG. 3 has appeared in the prior patent, and a scissor-type front end telescopic structure formed by connecting a plurality of support rods and pin connections is provided, and a camera module is disposed on the head of the front end telescopic structure, in practice.
  • the position of the camera module is controlled to change laterally within the narrow interval of the nuclear reactor support and hanger by the contraction or unfolding movement of the front-end telescopic structure, thereby achieving the purpose of video observation and reducing the radiation dose and loose pollution received by the inspector.
  • a miniature liftable video inspection device is disposed on the front end telescopic structure and includes:
  • a guide rail is fixed on one surface of the support bottom plate, and a slide table sliding along the guide rail is sleeved on the guide rail;
  • a fixed shaft is disposed between the first support base and the second support base, and the fixed shaft is sleeved There is a wire reel, one end of the fixed shaft is connected with a worm, the other end of the worm is connected to a motor, and the motor is fixed on the support bottom plate;
  • one end of the cable is fixed on the coiled wire drum, and the other end is connected to the camera module.
  • the cable is a flat cable.
  • a plurality of wires for transmitting video signals and electrical signals of the camera module are disposed in the cable.
  • a sliding brush is disposed at an end of the fixed shaft opposite to the worm.
  • the sliding brush is a multi-channel conductive sliding brush, and the inner wire of the cable is matched with the inner channel of the sliding brush one-to-one.
  • the first connecting block is fixed on the same surface of the supporting bottom plate and the guiding rail
  • the second connecting block is fixed on the sliding table, the second connecting block and the sliding table It can be slid on the guide rail as a whole.
  • the first connecting block and the second connecting block are both connected to the front end telescopic structure.
  • the cable and the camera module are connected by an aviation plug.
  • the motor can drive the worm to rotate and drive the coiled wire reel to rotate around the fixed shaft.
  • the micro-liftable video inspection device of the present invention can drive the movement of the flat cable through the micro-disc rotation in a narrow space, thereby realizing the lifting movement of the camera module in a narrow space, thereby enabling Complete automatic video inspection of each layer of the pipe branch support hanger of the main heat transfer system of the nuclear reactor.
  • the micro-liftable video inspection device of the present invention can freely adjust the position of the camera module by the movement of the front end telescopic structure and the retracting operation of the flat cable, thereby freely adjusting the detection range to achieve Good observation effect.
  • the flat cable used in the micro-liftable video inspection device of the present invention has a certain flexibility in the axial direction to facilitate rotation and retraction, and has a certain rigid performance in the circumferential direction to substantially ensure that the camera module does not sway from side to side, thereby facilitating video.
  • the positioning in the inspection, and the flat cable contains a plurality of thin wires and a multi-channel sliding brush, which can ensure the power and video signals of the camera and the LED light source in the transmission camera module are not disturbed, and can ensure the back end electrical Wiring is not affected by the movement of the reel.
  • the micro-liftable video inspection device of the present invention effectively expands the detection range compared with the existing products, and can replace the manual direct visual method of the current unreachable area, thereby effectively solving the manual detection efficiency and labor intensity. Large, high irradiation dose and high cost of testing.
  • FIG. 1 is a schematic structural view of a conventional telescopic video inspection apparatus
  • FIG. 2 is a left side view showing the structure of a miniature liftable video inspection device according to an embodiment of the present invention
  • Fig. 3 is a front elevational view showing the structure of a miniature liftable video inspection apparatus according to an embodiment of the present invention.
  • an embodiment of the present invention provides a micro-liftable video inspection device, which is disposed on a front end telescopic structure, and includes:
  • a support plate 2 a support rail 3 is fixed on one surface of the support base plate 2, and the guide rail 3 is sleeved with a slide table 4 slidable along the guide rail 3;
  • a first support base 6 and a second support base 9 disposed on a side of the support base plate 2 opposite to the guide rail 3, and a fixed shaft is disposed between the first support base 6 and the second support base 9
  • the sleeve is provided with a wire reel 10, one end of the fixed shaft is connected with a worm 8 , the other end of the worm 8 is connected to a motor 7 , and the motor 7 is fixed on the support base 2 ;
  • the cable 12 is fixed on one end of the cable reel 10 and connected to the camera module 13 at the other end.
  • Cable 12 can be a flat cable. Because of its flat shape, in addition to facilitating coiling, the cable 12 has a certain flexibility in its axial direction, which is convenient for rotation to achieve retraction; it has a certain rigidity in the circumferential direction of the cable, and can basically ensure that the module does not rise and fall when the camera is lifted. Shake left and right to facilitate positioning in video inspection.
  • a plurality of wires for transmitting the video signal and the electrical signal of the camera module 13 are disposed in the cable 12.
  • a sliding brush 11 is provided at one end of the fixed shaft opposite to the worm gear 8.
  • the sliding brush 11 is a multi-channel conductive sliding brush, and the wires in the cable 12 are matched with the channels in the sliding brush 11 one-to-one.
  • the use of the inner cable of the cable and the multi-channel sliding brush 11 can ensure that the power supply and video signals of the camera 15 and the LED light source 14 in the transmission camera module 13 are not disturbed, and the back end electrical wiring is ensured not to be reeled by the reel. 10 effects of sports.
  • the support base plate 2 is fixed with the first connecting block 1 on the same surface as the guide rail 3,
  • a second connecting block 5 is fixed on the sliding table 4, and the second connecting block 5 and the sliding table 4 are slidably integrated on the guide rail 3.
  • the first connecting block 1 and the second connecting block 5 are both connected to the front end telescopic structure.
  • the micro-liftable video inspection device of the present invention is disposed on the front end telescopic structure of the telescopic video inspection device shown in FIG. 1 , and is connected to the front end telescopic structure through the first connection block 1 and the second connection block 5, and the front end
  • the device is horizontally displaced; in the vertical direction, the center of gravity of the front end telescopic structure is reduced due to the expansion, and the second connecting block 5 and the sliding table 4 are also slid on the guide rail 3 to adjust the micro-can
  • the vertical displacement of the lift video inspection device and the attitude of the camera module is adjusted.
  • the cable 12 is connected to the camera module 13 via an aviation plug. Ensure that the connection is stable and the signal transmission is stable and clear.
  • the motor 7 can drive the worm 8 to rotate and drive the reel 10 to rotate about the fixed axis.
  • the working principle of the micro-liftable video inspection device of the invention is:
  • the micro-liftable video inspection device of the present invention drives the retracting action of the cable 12 through the micro-disc reel 10 by the transmission structure disposed in the device, so that the motor 7 can control the lifting and lowering of the cable 12 in the vertical direction.
  • the camera module 13 connected to the cable 12 is lifted and lowered to realize the lifting movement of the camera module 13 in a narrow space, thereby completing the automatic video inspection of each layer of the pipe branch support hanger of the nuclear heat reactor main heat transmission system.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
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Abstract

本发明公开了一种微型可升降式视频检查装置，涉及核电检验设备领域，包括设于支撑底板上与所述导轨相对一面的第一支撑座和第二支撑座，所述第一支撑座和第二支撑座间设有固定轴，所述固定轴上套设有一盘线卷筒，所述固定轴一端连接有涡轮蜗杆，所述涡轮蜗杆的另一端与一电机相连，所述电机固设在所述支撑底板上；电缆，所述电缆一端固设在所述盘线卷筒上、另一端与摄像头模组相连。本发明的微型可升降式视频检查装置通过微型的盘线卷筒转动带动扁平电缆的收放动作，实现摄像头模组在狭窄空间内的升降运动，进而能完成核反应堆主热传输系统管道支管支吊架各层的自动视频检查。

Description

一种微型可升降式视频检查装置 技术领域
本发明涉及核电检验设备领域，具体涉及一种微型可升降式视频检查装置。
背景技术
中国核电事业发展迅速，核设备的安全问题一直受到关注。目视检验是核电厂在役检查的主要手段之一，在核电厂在役检查时广泛应用。
主热传输系统管道支管支吊架是核反应堆的核心设备，在运行期间的震动会产生耐磨片磨损、支吊架偏移、螺母脱落和管道磨损等问题，需要经常检视。我国核电站主流堆型中主热传输系统管道支管每排有5层，每层支管上有4～5个支吊架。每个支吊架吊起一根支管，排与排的支吊架水平管间距很小。由于受检支吊架空间结构紧凑，支吊架相互交错排列，空间狭小，下层部分的支吊架受检区域采用直接目视检验时，只能在拆除保温层后从通道观察，这样基本上只能对最上面一层且靠近过道的支吊架及其配件进行检查。另外工作空间狭小、温度高(35～50℃)、工作环境辐照剂量率高，当蒸汽发生器人孔打开后还有松散污染，并且支吊架的数量多，检验人员在检验支吊架时受到的辐射剂量高，表面粘污和内污染的风险较高。
针对以上特征，国内外均采用间接目视方法进行支吊架完整性的检查，在加拿大CANDU堆型的下部支吊架采用间接目视使用自动化设备(视频检验系统)进行检验，采用英国OC公司的蛇形机器人从 过道下部进入进行检验，蛇形机器人出现故障后，采用手持式长杆内窥镜进行。国内还没有这类检验的自动化设备，到目前为止国内下层支吊架现场检验还处于空白阶段。
现有专利中已出现了一种如图3所示的伸缩式视频检查装置，通过设置若干支撑杆和销钉连接形成的剪式前端伸缩结构，在前端伸缩结构头部设置摄像头模组，在实际工作中，通过前端伸缩结构的收缩或展开运动，控制摄像头模组的位置在核反应堆支吊架的狭窄区间内横向变化，达到视频观测目的，减少检验人员检测时所受的辐射剂量和松散污染。但由于该装置中摄像头模组位置固定，其在竖直方向上的位移受限；同时，其摄像头模组的观测角度仅随前端伸缩结构的变化而略微变化，其观测范围无法控制，因此难以达到较好的观测效果。
为了更加全面地检验主热传输系统管道支管支吊架及其辅助系统的完整性，维护核电站设备安全可靠运行、提高检验技术能力、降低检验人员的受照剂量，现在研制一套具有在狭窄空间内实现竖直升降的视频检查装置具有十分重要的意义和必要性。
发明内容
针对现有技术中存在的缺陷，本发明的目的在于提供一种微型可升降式视频检查装置，可在狭窄空间内完成反应堆支吊架各层的视频检查。
为达到以上目的，本发明采取的技术方案是：
一种微型可升降式视频检查装置，其设于前端伸缩结构上，包括：
支撑底板，所述支撑底板的一个面上固设有一导轨，所述导轨上套设有一可沿所述导轨滑动的滑台；
设于支撑底板上与所述导轨相对一面的第一支撑座和第二支撑座，所述第一支撑座和第二支撑座间设有固定轴，所述固定轴上套设 有一盘线卷筒，所述固定轴一端连接有涡轮蜗杆，所述涡轮蜗杆的另一端与一电机相连，所述电机固设在所述支撑底板上；
电缆，所述电缆一端固设在所述盘线卷筒上、另一端与摄像头模组相连。
在上述技术方案的基础上，所述电缆为扁平形线缆。
在上述技术方案的基础上，所述电缆内设有多股用于传输所述摄像头模组视频信号和电信号的导线。
在上述技术方案的基础上，所述固定轴上与所述涡轮蜗杆相对的一端设有一滑刷。
在上述技术方案的基础上，所述滑刷为多通道导电滑刷，所述电缆内导线与所述滑刷内通道一一对应配合。
在上述技术方案的基础上，所述支撑底板与导轨相同的面上固设有第一连接块，所述滑台上固设有第二连接块，所述第二连接块与所述滑台可连为一整体在所述导轨上滑动。
在上述技术方案的基础上，所述第一连接块和第二连接块均与所述前端伸缩结构相连接。
在上述技术方案的基础上，所述电缆与所述摄像头模组通过航空插头相连。
在上述技术方案的基础上，所述电机可驱动所述涡轮蜗杆转动，并传动所述盘线卷筒绕所述固定轴转动。
与现有技术相比，本发明的优点在于：
(1)本发明的微型可升降式视频检查装置可在狭窄空间内，通过微型的盘线卷筒转动带动扁平电缆的收放动作，实现了摄像头模组在狭窄空间内的升降运动，进而能完成核反应堆主热传输系统管道支管支吊架各层的自动视频检查。
(2)本发明的微型可升降式视频检查装置与现有装置相比，可通过前端伸缩结构的移动和扁平电缆的收放动作自由调整摄像头模组的位置，从而自由调整检测范围，达到更好的观测效果。
(3)本发明的微型可升降式视频检查装置采用的扁平电缆在轴向具有一定的柔性便于旋转实现收放，在周向又具有一定刚性能基本保证摄像头模组不左右晃动，从而便于视频检查中的定位，且该扁平电缆内含有多股细线与多通道滑刷配合使用，既能保证传输摄像头模组中摄像头和LED光源的电源和视频信号不受干扰，又能保证后端电气接线不受盘线卷筒运动的影响。
(4)本发明的微型可升降式视频检查装置相比现有产品有效地扩大了检测范围，能代替现行的不可达区域的人工直接目视方法，从而能有效解决人工检测效率低、劳动强度大、辐照剂量高、检测成本大的难题。
附图说明
图1为现有的伸缩式视频检查装置的结构示意图；
图2为本发明实施例中微型可升降式视频检查装置的结构左视图；
图3为本发明实施例中微型可升降式视频检查装置的结构主视图。
图中：1-第一连接块，2-支撑底板，3-导轨，4-滑台，5-第二连接块，6-第一支撑座，7-直流电机，8-涡轮蜗杆，9-第二支撑座，10-盘线卷筒，11-滑刷，12-电缆，13-摄像头模组，14-LED灯，15-摄像头。
具体实施方式
以下结合附图及实施例对本发明作进一步详细说明。
参见图2、图3所示，本发明实施例提供一种微型可升降式视频检查装置，其设于前端伸缩结构上，包括：
支撑底板2，所述支撑底板2的一个面上固设有一导轨3，所述导轨3上套设有一可沿所述导轨3滑动的滑台4；
设于支撑底板2上与所述导轨3相对一面的第一支撑座6和第二支撑座9，所述第一支撑座6和第二支撑座9间设有固定轴，所述固定轴上套设有一盘线卷筒10，所述固定轴一端连接有涡轮蜗杆8，所述涡轮蜗杆8的另一端与一电机7相连，所述电机7固设在所述支撑底板2上；
电缆12，所述电缆12一端固设在所述盘线卷筒10上、另一端与摄像头模组13相连。
电缆12可为扁平形线缆。由于其形状为扁平形，除了便于盘绕外，所述电缆12在其轴向具有一定的柔性，便于旋转实现收放；在缆线周向具有一定的刚性，能基本保证摄像头升降时模组不左右晃动，从而便于视频检查中的定位。
电缆12内设有多股用于传输所述摄像头模组13视频信号和电信号的导线。固定轴上与所述涡轮蜗杆8相对的一端设有一滑刷11。
所述滑刷11为多通道导电滑刷，所述电缆12内导线与所述滑刷11内通道一一对应配合。电缆内导线与多通道滑刷11的配合使用，既能保证传输摄像头模组13中摄像头15和LED光源14的电源和视频信号不受干扰，又能保证后端电气接线不受盘线卷筒10运动的影响。
所述支撑底板2与导轨3相同的面上固设有第一连接块1，所述 滑台4上固设有第二连接块5，所述第二连接块5与所述滑台4可连为一整体在所述导轨3上滑动。
第一连接块1和第二连接块5均与前端伸缩结构相连接。
本发明的微型可升降式视频检查装置，其设于如图1所示的伸缩式视频检查装置的前端伸缩结构上，通过第一连接块1和第二连接块5与前端伸缩结构相连，前端伸缩结构伸缩时，本装置发生水平位移；在竖直方向上，由于伸缩时前端伸缩结构重心降低，也会带动第二连接块5和滑台4在导轨3上滑动，调整本发明的微型可升降式视频检查装置的竖直位移和摄像头模组的姿态。
所述电缆12与所述摄像头模组13通过航空插头相连。保证连接稳固、信号传输稳定清晰。
所述电机7可驱动所述涡轮蜗杆8转动，并传动所述盘线卷筒10绕所述固定轴转动。
本发明微型可升降式视频检查装置的工作原理为：
本发明微型可升降式视频检查装置通过设置在装置内的传动结构，通过微型的盘线卷筒10转动带动电缆12的收放动作，使得电机7可控制电缆12在竖直方向上的升降，使连接在电缆12上的摄像头模组13随之升降，实现了摄像头模组13在狭窄空间内的升降运动，进而能完成核反应堆主热传输系统管道支管支吊架各层的自动视频检查。
本发明不局限于上述实施方式，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围之内。本说明书中未作详细描述的内容属于本领域专业技术人员公知的现有技术。

Claims (9)

  1. 一种微型可升降式视频检查装置，其设于前端伸缩结构上，其特征在于，包括：
    支撑底板(2)，所述支撑底板(2)的一个面上固设有一导轨(3)，所述导轨(3)上套设有一可沿所述导轨(3)滑动的滑台(4)；
    设于支撑底板(2)上与所述导轨(3)相对一面的第一支撑座(6)和第二支撑座(9)，所述第一支撑座(6)和第二支撑座(9)间设有固定轴，所述固定轴上套设有一盘线卷筒(10)，所述固定轴一端连接有涡轮蜗杆(8)，所述涡轮蜗杆(8)的另一端与一电机(7)相连，所述电机(7)固设在所述支撑底板(2)上；
    电缆(12)，所述电缆(12)一端固设在所述盘线卷筒(10)上、另一端与摄像头模组(13)相连。
  2. 如权利要求1所述的微型可升降式视频检查装置，其特征在于：所述电缆(12)为扁平形线缆。
  3. 如权利要求2所述的微型可升降式视频检查装置，其特征在于：所述电缆(12)内设有多股用于传输所述摄像头模组(13)视频信号和电信号的导线。
  4. 如权利要求3所述的微型可升降式视频检查装置，其特征在于：所述固定轴上与所述涡轮蜗杆(8)相对的一端设有一滑刷(11)。
  5. 如权利要求4所述的微型可升降式视频检查装置，其特征在于：所述滑刷(11)为多通道导电滑刷，所述电缆(12)内导线与所述滑刷(11)内通道一一对应配合。
  6. 如权利要求1所述的微型可升降式视频检查装置，其特征在于：所述支撑底板(2)与导轨(3)相同的面上固设有第一连接块(1)，所述滑台(4)上固设有第二连接块(5)，所述第二连接块(5)与所 述滑台(4)可连为一整体在所述导轨(3)上滑动。
  7. 如权利要求6所述的微型可升降式视频检查装置，其特征在于：所述第一连接块(1)和第二连接块(5)均与所述前端伸缩结构相连接。
  8. 如权利要求1所述的微型可升降式视频检查装置，其特征在于：所述电缆(12)与所述摄像头模组(13)通过航空插头相连。
  9. 如权利要求1所述的微型可升降式视频检查装置，其特征在于：所述电机(7)可驱动所述涡轮蜗杆(8)转动，并传动所述盘线卷筒(10)绕所述固定轴转动。
PCT/CN2017/075646 2017-03-03 2017-03-03 一种微型可升降式视频检查装置 WO2018157398A1 (zh)

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CN201995074U (zh) * 2011-01-21 2011-09-28 天津市技术物理研究所 一种辐照场移动式视频监控装置
CN203504671U (zh) * 2013-10-17 2014-03-26 甘肃第六建设集团股份有限公司 一种用于超深桩孔验收影像获取的摄像机固定控制装置
CN105161327A (zh) * 2015-09-30 2015-12-16 华能国际电力股份有限公司玉环电厂 开关安全操作装置
CN105806937A (zh) * 2014-12-30 2016-07-27 中核武汉核电运行技术股份有限公司 一种蒸汽发生器传热管超声检查系统
CN106044596A (zh) * 2016-08-22 2016-10-26 上海核工程研究设计院 一种同步式装卸料机水下摄像装置

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Publication number Priority date Publication date Assignee Title
CN201995074U (zh) * 2011-01-21 2011-09-28 天津市技术物理研究所 一种辐照场移动式视频监控装置
CN203504671U (zh) * 2013-10-17 2014-03-26 甘肃第六建设集团股份有限公司 一种用于超深桩孔验收影像获取的摄像机固定控制装置
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