Reactor pool video apparatus and system

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By designing a video device for the reactor pool, and utilizing support rods, telescopic rods, and traction mechanisms, efficient monitoring of the reactor pool is achieved, solving the problems of inconvenient access and safety hazards associated with existing equipment, and improving maintenance efficiency and safety.

CN224329520UActive Publication Date: 2026-06-05CHINA GENERAL NUCLEAR POWER OPERATION

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: CHINA GENERAL NUCLEAR POWER OPERATION
Filing Date: 2025-07-29
Publication Date: 2026-06-05

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Abstract

The application relates to a reactor pool video device and system. The reactor pool video device comprises a support, a supporting rod, an extension rod, an illumination assembly, a traction mechanism and a video assembly. In use, the support is placed at the side of a reactor pool, the supporting rod is vertically arranged relative to the support, the extension rod is extended to drive the illumination assembly and the video assembly to extend into the reactor pool, then the supporting rod is rotated around the support to drive the illumination assembly and the video assembly to move above a to-be-observed area, then the video assembly is lowered to the vicinity of the to-be-observed area in the reactor pool through the traction mechanism, the illumination assembly illuminates the to-be-observed area, and the video assembly is used for observing the to-be-observed area to monitor various maintenance operations at various positions in the reactor pool.

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Description

Technical Field

[0001] This application relates to the field of nuclear power plant maintenance technology, and in particular to reactor pool video devices and systems. Background Technology

[0002] During the unit's major overhaul, maintenance work needs to be carried out on the reactor pressure vessel at the bottom of the reactor pit. Because the reactor pool is 10 meters deep, there is insufficient lighting at the bottom, so additional light sources are required.

[0003] Currently, the units are using temporary lights on the pool walls, but these pool wall lights are quite heavy, each weighing up to 15kg, which puts a significant strain on personnel. The pool wall lights lack directional adjustment and have a limited illumination area, failing to meet current brightness requirements and posing a significant safety hazard during installation. When installing the pool wall lights, operators need to wear safety belts, shoe covers, and protective clothing, making movement difficult and reducing installation efficiency. Operators must climb over the railings to install them at the pool edge, where there is no physical protection and a drop of up to 10 meters, posing a risk of falls.

[0004] The prior art proposes a rapid video inspection system for nuclear power plant fuel assemblies, in which camera and lighting components are mounted on the inner wall of the reactor pit using a bracket. However, in this solution, the device is fixed to the inner wall of the reactor pit by the bracket, which is inconvenient to disassemble after a major overhaul, and it is impossible to extend the camera and lighting components into specific positions in the reactor pit. Utility Model Content

[0005] Therefore, it is necessary to provide a reactor pool video device and system to address the problems of existing nuclear power plant fuel assembly rapid video inspection systems, which use brackets to install camera and lighting components on the inner wall of the reactor pit, making disassembly inconvenient after major overhauls and preventing the camera and lighting components from being extended into specific locations within the reactor pit.

[0006] A reactor pool video device is used to observe the internal conditions of the reactor pool during nuclear power plant maintenance. The reactor pool video device includes:

[0007] Support;

[0008] A support rod is vertically installed and rotatably connected to the support about a vertical axis;

[0009] The telescopic rod has one end connected to the end of the support rod away from the support base. The telescopic rod is set at an angle to the support rod and can extend or shorten along its own axis.

[0010] A lighting assembly is connected to the end of the telescopic rod opposite to the support rod;

[0011] A traction mechanism is provided on the support rod; and

[0012] The video component is connected to the traction mechanism and is able to move towards or away from the telescopic pole in a vertical direction under the drive of the traction mechanism.

[0013] In actual use, the aforementioned reactor pool video device first places the support on the side of the reactor pool, sets the support rod vertically relative to the support, and extends and retracts the telescopic rod to extend the lighting and video components into the reactor pool. Then, the support rod is rotated around the support, thereby moving the lighting and video components above the area to be observed. Subsequently, the video component is lowered to the vicinity of the area to be observed in the reactor pool through a traction mechanism. The lighting component illuminates the area to be observed, and the video component is used to observe the area to monitor various maintenance operations at various points in the reactor pool.

[0014] In one embodiment, the traction mechanism includes: a winch assembly, a first guide wheel assembly, a second guide wheel assembly, and a traction rope;

[0015] The winch assembly is mounted on the support rod, and the first guide wheel group and the second guide wheel group are respectively mounted at both ends of the telescopic rod;

[0016] The traction rope is laid on the first guide wheel assembly and the second guide wheel assembly;

[0017] One end of the traction rope is connected to the winch assembly, and the other end is connected to the video assembly. The winch assembly is used to wind the traction rope.

[0018] In one embodiment, the telescopic rod includes a first rod and a second rod, one end of the first rod is connected to the support rod, and the second rod slides with the first rod along the axial direction of the telescopic rod;

[0019] The first guide wheel assembly is located at the end of the first rod opposite to the second rod, and the second guide wheel assembly is located at the end of the second rod opposite to the first rod.

[0020] In one embodiment, the video component includes a camera and cables, the first guide wheel assembly includes a first frame, a first wheel and a second wheel, and the second guide wheel assembly includes a second frame, a third wheel and a fourth wheel;

[0021] The first frame is mounted on the first rod, the first wheel and the second wheel are arranged vertically, and the two ends of the first wheel are rotatably connected to the first frame about a horizontal axis.

[0022] The second frame is mounted on the second rod, and the two ends of the second wheel are rotatably connected to the first frame about a horizontal axis; the third wheel and the fourth wheel are arranged vertically, and the two ends of the third wheel are rotatably connected to the second frame about a horizontal axis, and the two ends of the fourth wheel are rotatably connected to the second frame about a horizontal axis.

[0023] The traction rope is laid on the first wheel and the third wheel, and the cable is laid on the second wheel and the fourth wheel. The end of the traction rope away from the third wheel is connected to the camera, and the end of the cable away from the second wheel is connected to the camera.

[0024] In one embodiment, the reactor pool video device further includes a connecting assembly connected to the support, wherein one end of the support rod opposite to the telescopic rod is rotatably connected to the connecting assembly.

[0025] In one embodiment, the connection assembly includes a mounting base, a bearing, and fasteners;

[0026] The fastener passes through the fixing seat and detachably connects the fixing seat to the support.

[0027] The outer ring of the bearing is located at the end of the fixed seat away from the support, and the end of the support rod away from the telescopic rod is connected to the inner ring of the bearing.

[0028] In one embodiment, the fixed seat includes a sleeve and a connecting part, the support includes a seat body and a sleeve connected together, the sleeve is sleeved on the sleeve, the connecting part is connected to the end of the sleeve away from the seat body, the outer ring of the bearing is disposed at the end of the connecting part away from the sleeve, and the fastener passes through the sleeve and abuts against the sleeve.

[0029] In one embodiment, the lighting assembly includes a main lighting section and an auxiliary lighting section, the main lighting section being connected to the end of the telescopic rod opposite to the support rod, and the auxiliary lighting section being connected to the end of the telescopic rod opposite to the support rod.

[0030] In one embodiment, the reactor pool video device further includes a rotating assembly, which includes a first rotating part and a second rotating part, the first rotating part being connected to the telescopic rod;

[0031] The second rotating part is connected to the first rotating part, and the first rotating part is used to drive the second rotating part to rotate about a horizontal axis. The auxiliary lighting part is connected to the second rotating part, and the second rotating part is used to drive the auxiliary lighting part to rotate about a vertical axis; or

[0032] The second rotating part is connected to the first rotating part, and the first rotating part is used to drive the second rotating part to rotate around a vertical axis. The auxiliary lighting part is connected to the second rotating part, and the second rotating part is used to drive the auxiliary lighting part to rotate around a horizontal axis.

[0033] One embodiment of this application also provides a reactor pool video system, which includes: a remote control module, a display module, and the aforementioned reactor pool video device;

[0034] The remote control module is connected to the display module, the lighting component, and the video component, and is used to control the lighting component and the video component, and to transmit the image of the video component to the display module.

[0035] In actual use, the aforementioned reactor pool video system first places the support at the edge of the reactor pool, then sets the support rod vertically relative to the support. The telescopic rod extends and retracts, causing the lighting and video components to extend into the reactor pool. Subsequently, the support rod rotates around the support, thereby moving the lighting and video components above the area to be observed. Then, the video component is lowered into the vicinity of the area to be observed in the reactor pool via a traction mechanism. The lighting component illuminates the area to be observed, and the video component is used to observe the area to monitor various maintenance operations at various points in the reactor pool. The control module controls the operation of the lighting and video components, and simultaneously transmits the images from the video component to the display module, so that operators can control and observe from the edge of the reactor pool. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of a reactor pool video device according to one embodiment.

[0037] Figure 2 for Figure 1 A magnified view of the connecting component in the middle.

[0038] Figure 3 for Figure 1 Enlarged view of the winch assembly.

[0039] Figure 4 for Figure 1 Enlarged view of the central lighting component.

[0040] Figure 5 for Figure 4 A diagram from another perspective.

[0041] Explanation of icon numbers:

[0042] 10 - Reactor Pool Video Device;

[0043] 100-Support; 110-Base; 111-Top plate; 112-Base frame; 120-Sleeve part;

[0044] 200-Support rod;

[0045] 300 - Telescopic pole; 310 - First pole; 320 - Second pole;

[0046] 400 - Lighting assembly; 410 - Main lighting unit; 420 - Auxiliary lighting unit;

[0047] 500 - Traction mechanism; 510 - Winch assembly; 520 - First guide wheel assembly; 521 - First frame; 522 - First wheel; 523 - Second wheel; 530 - Second guide wheel assembly; 531 - Second frame; 532 - Third wheel; 533 - Fourth wheel; 540 - Traction rope;

[0048] 600 - Video component; 610 - Camera; 620 - Camera connector;

[0049] 700-Connecting assembly; 710-Fixing base; 711-Sleeve sleeve; 712-Connecting part; 713-Limiting protrusion; 714-Limiting component; 715-Limiting plate; 716-Snap-fit plate; 720-Bearing; 730-Fastener;

[0050] 800-First locking assembly; 801-Connecting block; 802-Locking element; 810-Rotating assembly; 811-First rotating part; 812-Second rotating part; 820-Main adjusting part; 821-Clamping piece; 822-Clamping element; 830-Extension plate; 830a-Allowing hole; 840-Rotating rod; 850-Second locking assembly. Detailed Implementation

[0051] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0052] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0053] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0054] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0055] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0056] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0057] See Figure 1 , Figure 1 A schematic diagram of the structure of a reactor pool video device 10 according to an embodiment of this application is shown. The reactor pool video device 10 provided in an embodiment of this application is used to observe the internal condition of the reactor pool during nuclear power plant maintenance. The reactor pool video device 10 includes: a support 100, a support rod 200, a telescopic rod 300, a lighting component 400, a traction mechanism 500, and a video component 600.

[0058] In the aforementioned reactor pool video device 10, the support rod 200 is vertically mounted and rotatably connected to the support 100 about its vertical axis. (See reference...) Figure 2 One end of the telescopic rod 300 is connected to the end of the support rod 200 away from the support 100. The telescopic rod 300 is angled to the support rod 200 and can extend or retract along its own axial direction. The lighting assembly 400 is connected to the end of the telescopic rod 300 away from the support rod 200. The traction mechanism 500 is disposed on the support rod 200. The video assembly 600 is connected to the traction mechanism 500 and can move towards or away from the telescopic rod 300 vertically under the action of the traction mechanism 500.

[0059] In actual use, the aforementioned reactor pool video device 10 first places the support 100 on the side of the reactor pool, sets the support rod 200 vertically relative to the support 100, and extends and retracts the telescopic rod 300 to extend the lighting component 400 and the video component 600 into the reactor pool. Then, the support rod 200 is rotated around the support 100, thereby moving the lighting component 400 and the video component 600 above the area to be observed. Subsequently, the video component 600 is lowered to the vicinity of the area to be observed in the reactor pool by the traction mechanism 500. The lighting component 400 illuminates the area to be observed, and the video component 600 is used to observe the area to monitor various maintenance operations at various points in the reactor pool.

[0060] Preferably, the reactor pool video device 10 further includes a rotating rod 840, which is detachably connected to the support rod 200 and extends horizontally. By connecting the rotating rod 840 to the support rod 200, the support rod 200 can be rotated by holding the rotating rod 840, making it easier to rotate the support rod 200 relative to the support 100 around its vertical axis. Specifically, the side wall of the support rod 200 is provided with one of the following: a threaded hole, a shaped hole, or a round hole. The rotating rod 840 passes through and is adapted to the aforementioned hole to achieve a detachable connection between the rotating rod 840 and the support rod 200.

[0061] See Figure 1 and Figure 3 In one embodiment, the traction mechanism 500 includes a winch assembly 510, a first guide wheel assembly 520, a second guide wheel assembly 530, and a traction rope 540. The winch assembly 510 is disposed on the support rod 200, and the first guide wheel assembly 520 and the second guide wheel assembly 530 are respectively disposed at both ends of the telescopic rod 300. The traction rope 540 is laid on the first guide wheel assembly 520 and the second guide wheel assembly 530. One end of the traction rope 540 is connected to the winch assembly 510, and the other end is connected to the video assembly 600. The winch assembly 510 is used to wind the traction rope 540.

[0062] Specifically, the structure of the winch assembly 510 is based on the prior art, including components such as a handle, a shaft, a support plate, and a wheel. The winch assembly 510 in this application can lock the traction rope 540, which can be a ratchet structure, or a locking structure, abutment structure, etc., and the specific form is not limited.

[0063] In this embodiment, one end of the traction rope 540 is connected to the winch assembly 510 and extends along the extension direction of the support rod 200. The first guide wheel assembly 520 turns the traction rope 540 extending from the winch assembly 510 to extend along the extension direction of the telescopic rod 300. The second guide wheel assembly 530 turns the traction rope 540 extending along the extension direction of the telescopic rod 300 to the vertical direction. The end of the traction rope 540 away from the winch assembly 510 is connected to the video component 600. The traction rope 540 drives the video component 600 to move closer to or away from the telescopic rod 300 in the vertical direction. This allows the operator located at the reactor pool to operate the winch assembly 510 set on the support rod 200, so that the video component 600 can extend vertically into the reactor pool to monitor the maintenance process.

[0064] See Figure 1 and Figure 3In one embodiment, the telescopic rod 300 includes a first rod 310 and a second rod 320. One end of the first rod 310 is connected to the support rod 200, and the second rod 320 slides with the first rod 310 along the axial direction of the telescopic rod 300. A first guide wheel assembly 520 is disposed at the end of the first rod 310 opposite to the second rod 320, and a second guide wheel assembly 530 is disposed at the end of the second rod 320 opposite to the first rod 310.

[0065] In this embodiment, the first rod 310 extends the second rod 320 above the reactor pool, and the second rod 320 then slides along the axial direction of the telescopic rod 300 to further extend the first rod 310, thereby enabling the video component 600 and the lighting component 400 to move fully above the reactor pool.

[0066] Specifically, the first rod 310 and the second rod 320 together form an electric telescopic rod 300, or the first rod 310 is provided with a sliding groove and the second rod 320 has a sliding part, which slides in conjunction with the sliding groove, so that the first rod 310 and the second rod 320 slide in conjunction along the axial direction of the telescopic rod 300 itself.

[0067] When the sum of the lengths of the first rod 310 and the second rod 320 is greater than or equal to the diameter of the reactor pool, the rotation angle of the support rod 200 allows the telescopic rod 300 to completely sweep across the opening of the reactor pool, and the length of the traction rope 540 is sufficient to ensure that the vertical drop height of the video component 600 is greater than or equal to the sum of the depth of the reactor pool and the height of the reactor pool video device 10, then the lighting component 400 and the video component 600 can be moved to any position above the bottom wall of the reactor pool without moving the support 100, and the video component 600 can be moved to any position within the space of the reactor pool.

[0068] See Figure 1 , Figure 3 and Figure 4In one embodiment, the video component 600 includes a camera 610 and cables. A first guide wheel assembly 520 includes a first frame 521, a first wheel 522, and a second wheel 523. A second guide wheel assembly 530 includes a second frame 531, a third wheel 532, and a fourth wheel 533. The first frame 521 is mounted on a first rod 310. The first wheel 522 and the second wheel 523 are arranged vertically, with both ends of the first wheel 522 rotatably connected to the first frame 521 about a horizontal axis. The second frame 531 is mounted on a second rod 320, with both ends of the second wheel 523 rotatably connected to the first frame 521 about a horizontal axis. The third wheel 532 and the fourth wheel 533 are arranged vertically, with both ends of the third wheel 532 and the fourth wheel 533 rotatably connected to the second frame 531 about a horizontal axis. The traction rope 540 is laid on the first wheel 522 and the third wheel 532, and the cable is laid on the second wheel 523 and the fourth wheel 533. The end of the traction rope 540 away from the third wheel 532 is connected to the camera 610, and the end of the cable away from the second wheel 523 is connected to the camera 610.

[0069] In this embodiment, the first frame 521 supports the first wheel 522 and the second wheel 523, and the first wheel 522 and the second wheel 523 are arranged vertically. The second frame 531 supports the third wheel 532 and the fourth wheel 533, which are also arranged vertically. This enables the winching of two sets of ropes or cables. The traction rope 540 is laid on the first wheel 522 and the third wheel 532, so that the traction rope 540 is turned by the first wheel 522 and the third wheel 532. It extends from the winch assembly 510 along the support rod 200, the telescopic rod 300 and the vertical direction of the telescopic rod 300 away from the support rod 200, thereby ensuring that the rotating winch assembly 510 winches the traction rope 540 and the camera 610 to rise or fall. The cable is laid on the second wheel 523 and the fourth wheel 533 and connected to the camera 610. The cable can be turned along the support rod 200 and the telescopic rod 300 through the second wheel 523 and the fourth wheel 533 to achieve cable straightening. The cable does not bear the weight of the camera 610 but only transmits signals and supplies power to the camera 610. The cable can be wound by a winch or pulled by the operator.

[0070] In this application, the first round 522 is located below the second round 523, and the third round 532 is located below the fourth round 533, so that the traction rope 540 is located below the cable. The traction rope 540 can better bear the weight of the camera 610, ensuring that the cable is not stressed, thereby protecting the cable.

[0071] Alternatively, 522 in the first round can be below 523 in the second round, and 532 in the third round can be above 533 in the fourth round. The specific arrangement is not limited.

[0072] Preferably, there are two traction ropes 540. The first wheel 522 and the third wheel 532 each have two ring grooves. The two ring grooves of the first wheel 522 limit the two traction ropes 540, and the two ring grooves of the third wheel 532 limit the two traction ropes 540.

[0073] See Figure 1 and Figure 2 In one embodiment, the reactor pool video device 10 further includes a connecting component 700, which is connected to the support 100, and the end of the support rod 200 away from the telescopic rod 300 is rotatably connected to the connecting component 700.

[0074] Specifically, the connecting assembly 700 includes a fixed base 710, a bearing 720, and a fastener 730. The fastener 730 passes through the fixed base 710 and detachably connects the fixed base 710 to the support 100. The outer ring of the bearing 720 is located at the end of the fixed base 710 opposite to the support 100, and the end of the support rod 200 opposite to the telescopic rod 300 is connected to the inner ring of the bearing 720. In this embodiment, by setting the fixed base 710 and using the fastener 730 to detachably connect the fixed base 710 to the support 100, a detachable connection between the support rod 200 and the support 100 is achieved. By setting the bearing 720, the support rod 200 and the fixed base 710 can rotate relative to the support 100 in the vertical direction, thereby enabling the support rod 200 to rotate relative to the support 100 in the vertical direction.

[0075] See Figure 1 and Figure 2 In one embodiment, the fixed base 710 includes a sleeve 711 and a connecting portion 712, the support 100 includes a seat body 110 and a sleeve portion 120 connected to each other, the sleeve 711 is sleeved on the sleeve portion 120, the connecting portion 712 is connected to the end of the sleeve 711 away from the seat body 110, the outer ring of the bearing 720 is disposed at the end of the connecting portion 712 away from the sleeve 711, and the fastener 730 passes through the sleeve 711 and abuts against the sleeve portion 120.

[0076] In this embodiment, the sleeve 711 is fitted onto the sleeve portion 120, thereby limiting the horizontal movement of the fixed seat 710 and the support 100. By providing the connecting portion 712, the fixed seat 710 can only be lifted after being fitted onto the sleeve portion 120 to release the limitation with the support 100. By having the fastener 730 pass through the sleeve 711 and abut against the sleeve portion 120, the fixed seat 710 cannot be lifted in the vertical direction, thereby achieving a detachable connection between the fixed seat 710 and the support 100.

[0077] The fastener 730 is a threaded component that is threadedly engaged with the sleeve 711. By rotating the fastener 730, the fastener 730 can be made to abut against the sleeve portion 120, thereby connecting the fixed seat 710 and the support 100. Alternatively, the threaded component can be simultaneously inserted into both the sleeve 711 and the sleeve portion 120 to connect the fixed seat 710 and the support 100.

[0078] Specifically, in this application, the sleeve 711 can be cylindrical, or it can be a cylindrical structure formed by two arc-shaped plates or multiple right-angled plates. The specific form is not limited, as long as the sleeve 711 can be sleeved on the sleeve part 120 in the vertical direction.

[0079] See Figure 1 and Figure 2 In one embodiment, the fixing base 710 further includes a plurality of corresponding limiting protrusions 713 and a plurality of limiting members 714. One end of the limiting member 714 is connected to the base body 110, and the other end is engaged with the limiting protrusion 713 in the vertical direction. Specifically, the base 110 includes a top plate 111 and a base frame 112. One side of the top plate 111 is connected to the base frame 112, and the other side of the top plate 111 is connected to the sleeve part 120. The limiting member 714 includes a limiting plate 715, two snap-fit plates 716, and a threaded member. Both ends of the limiting plate 715 are connected to the two snap-fit plates 716. The snap-fit plates 716 are at an angle to the limiting plate 715. The threaded member passes through one of the snap-fit plates 716 and abuts against the side of the top plate 111 away from the sleeve 711. The threaded member is threadedly engaged with the snap-fit plate 716. The other snap-fit plate 716 abuts against the side of the limiting protrusion 713 in the vertical direction away from the top plate 111.

[0080] During installation, the fixing seat 710 is first connected to the support 100 using fasteners 730. Then, the limiting member 714 is snapped onto the limiting protrusion 713. One of the snapping plates 716 is located on the side of the top plate 111 away from the sleeve 711, and the other snapping plate 716 is located on the side of the limiting protrusion 713 in the vertical direction away from the top plate 111. Then, the threaded part is passed through one of the snapping plates 716 and tightened, thereby abutting against the side of the top plate 111 away from the sleeve 711, so as to realize the limiting member 714 limiting the limiting protrusion 713 in the vertical direction.

[0081] See Figure 1 and Figure 2 In one embodiment, the reactor pool video device 10 further includes a first locking assembly 800. The first locking assembly 800 is connected to the connecting portion 712 and is capable of abutting against the inner ring of the bearing 720. Specifically, the first locking assembly 800 includes a connecting block 801 and a locking member 802. The connecting block 801 is connected to the connecting portion 712, and the locking member 802 passes through the connecting portion 712 and abuts against the inner ring of the bearing 720.

[0082] In another embodiment, the first locking assembly 800 is connected to the support rod 200 and is capable of abutting against the outer ring of the bearing 720. The first locking assembly 800 includes a connecting block 801 and a locking member 802. The connecting block 801 is connected to the support rod 200, and the locking member 802 passes through the connecting block 801 and abuts against the outer ring of the bearing 720. The locking member 802 is a threaded component such as a screw or bolt.

[0083] Preferably, see further. Figure 5 The reactor pool video device 10 also includes a second locking assembly 850, which passes through the end of the first rod 310 opposite to the support rod 200 and abuts against the second rod 320, thereby enabling the release of the second rod 320 or fixing the position of the second rod 320 relative to the first rod 310. The second locking assembly 850 can be a screw and nut threadedly engaged assembly, or it can be an assembly composed of multiple pins abutting against the second rod 320.

[0084] See Figure 1 and Figure 4 In one embodiment, the lighting assembly 400 includes a main lighting unit 410 and an auxiliary lighting unit 420. The main lighting unit 410 is connected to the end of the telescopic rod 300 opposite to the support rod 200, and the auxiliary lighting unit 420 is connected to the end of the telescopic rod 300 opposite to the support rod 200. Thus, the main lighting unit 410 provides illumination during maintenance, and the auxiliary lighting unit 420 provides supplementary lighting.

[0085] See Figure 1 , Figure 4 and Figure 5 In one embodiment, the reactor pool video device 10 further includes a rotating assembly 810, which includes a first rotating part 811 and a second rotating part 812. The first rotating part 811 is connected to the telescopic rod 300. The second rotating part 812 is connected to the first rotating part 811. The first rotating part 811 is used to drive the second rotating part 812 to rotate about a horizontal axis. The auxiliary lighting part 420 is connected to the second rotating part 812. The second rotating part 812 is used to drive the auxiliary lighting part 420 to rotate about a vertical axis.

[0086] In another embodiment, the second rotating part 812 is connected to the first rotating part 811. The first rotating part 811 drives the second rotating part 812 to rotate about a vertical axis. The auxiliary lighting part 420 is connected to the second rotating part 812, and the second rotating part 812 drives the auxiliary lighting part 420 to rotate about a horizontal axis. This allows the first rotating part 811 and the second rotating part 812 to drive the auxiliary lighting part 420 to rotate about both a horizontal and a vertical axis. The maximum angle of rotation of the auxiliary lighting part 420 about the horizontal axis is 35°, and the maximum angle of rotation about the vertical axis is 350°. Generally, the illumination brightness of the main lighting part 410 is greater than that of the auxiliary lighting part 420. The main lighting part 410 and the tenant lighting part are lighting tools such as light boxes or lamps.

[0087] See Figure 1 , Figure 4 and Figure 5 In one embodiment, the reactor pool video device 10 further includes a main adjustment unit 820, which is rotatably connected to the telescopic rod 300 in the vertical direction. The main adjustment unit 820 is also connected to the main lighting unit 410 to drive the main lighting unit 410 to rotate in the vertical direction.

[0088] Specifically, the main adjustment unit 820 includes two clamping plates 821 and a clamping member 822. The two clamping plates 821 are located on both sides of the telescopic rod 300. The clamping member 822 is used to clamp the two clamping plates 821. The clamping member 822 can be an elastic clamp or a threaded member that passes through the two clamping plates 821. One of the clamping plates 821 is connected to the main lighting unit 410. When it is necessary to adjust the angle of the main lighting unit 410, the two clamping plates 821 are rotated relative to the telescopic rod 300 and then the two clamping plates 821 are clamped by the clamping member 822, thereby fixing the main lighting unit 410 relative to the telescopic rod 300 at the required angle.

[0089] See Figure 1 , Figure 4 and Figure 5 In one embodiment, the reactor pool video device 10 further includes an extension plate 830. One end of the extension plate 830 is connected to the end of the telescopic rod 300 away from the support rod 200, and the other end is connected to the main lighting unit 410. The extension plate 830 has a clearance hole 830a in the vertical direction. The second frame 531 is connected to the telescopic rod 300 and passes through the clearance hole 830a. The auxiliary lighting unit 420 is connected to the telescopic rod 300 and is located on the side of the video assembly 600 away from the main lighting unit 410. This allows the traction rope 540 to pass through the clearance hole 830a and connect vertically downwards to the camera 610, ensuring that the main lighting unit 410 and the auxiliary lighting unit 420 are located on both sides of the camera 610, providing sufficient illumination from different angles during the monitoring process.

[0090] Specifically, the video assembly 600 also includes a camera connector 620, which connects to the top of the camera 610 and is used to connect the traction rope 540. The camera 610 is an eagle-eye camera 610.

[0091] In another embodiment, the support 100 comprises a base rod and a guardrail. A bearing 720 is provided in the connecting part 712 to drive the support rod 200 to rotate. The base rod and guardrail are supported on the side of the connecting part 712 away from the support rod 200. A clamping part is provided at the bottom of the connecting part 712 to clamp the long tube of the guardrail. A chain is also provided, with one end detachably connected to the bottom of the connecting part 712 and the other end detachably connected to the guardrail. Specifically, a connecting ring and a positive / negative threaded connector are used to hang the chain on the connecting part 712 and the guardrail, and tensioned. The connecting part 712 is a connecting plate.

[0092] Preferably, the reactor pool video device 10 also includes an underwater monitoring unit, and a traction rope 540 and cable connecting the underwater monitoring unit. By opening a traction hole on the extension plate 830, the traction rope 540 and cable are passed through the traction hole, with one end for the operator to pull and the other end connected to the underwater television. The underwater monitoring unit can be raised or lowered by the supporting and pulling structure, and the underwater monitoring unit can be submerged below the water surface of the reactor pool for monitoring and observation.

[0093] Specifically, the support rod 200 extends vertically, the telescopic rod 300 and the extension plate 830 extend horizontally, and the main lighting unit 410 illuminates downwards.

[0094] One embodiment of this application also provides a reactor pool video system, which includes a remote control module, a display module, and a reactor pool video device 10.

[0095] The remote control module is connected to the display module, the lighting component 400, and the video component 600, and is used to control the lighting component 400 and the video component 600, and to transmit the image of the video component 600 to the display module.

[0096] In actual use, the aforementioned reactor pool video system first places the support 100 at the edge of the reactor pool, and sets the support rod 200 vertically relative to the support 100. The telescopic rod 300 extends and retracts, causing the lighting component 400 and video component 600 to extend into the reactor pool. Then, the support rod 200 is rotated around the support 100, thereby moving the lighting component 400 and video component 600 above the area to be observed. Subsequently, the video component 600 is lowered to the vicinity of the area to be observed in the reactor pool through the traction mechanism 500. The lighting component 400 illuminates the area to be observed, and the video component 600 is used to observe the area to monitor various maintenance operations at various points in the reactor pool. The control module controls the operation of the lighting component 400 and video component 600, and simultaneously transmits the image of the video component 600 to the display module so that operators can control and observe from the edge of the reactor pool.

[0097] Specifically, the reactor pool video system also includes an early warning unit, which is connected to the end of the telescopic rod 300 away from the support rod 200. The early warning unit is connected to the control module and is used to transmit the collision signal to the control module and display it through the display module, so that the operator can know the collision situation near the telescopic rod 300.

[0098] This application can be used for lighting and video inspection of reactor pools in multi-unit nuclear power plants. Personnel can install the lighting directly on the ground without having to climb over guardrails to reach the pool edge, thus avoiding the risk of falls. The lighting fixture is half the weight, and its brightness and illumination angle are adjustable, significantly improving the ambient brightness of the reactor pool and reducing the need for personnel to hold the lighting fixture, thereby improving work efficiency. It features visualization capabilities, allowing for full-range monitoring of the environment around the reactor pool and focusing to detect foreign matter residue, reducing the workload and time required for inspections, and enabling visual recording and documentation. The installation and removal of the device are all carried out on the ground, avoiding high-risk operations with personnel without physical protection, preventing falls, saving collective radiation dose, and contributing to the optimization of overhaul radiation dose.

[0099] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0100] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A reactor pool video device for observing the internal conditions of a reactor pool during nuclear power plant maintenance, characterized in that, The reactor pool video device includes: Support; A support rod is vertically installed and rotatably connected to the support about a vertical axis; The telescopic rod has one end connected to the end of the support rod away from the support base. The telescopic rod is set at an angle to the support rod and can extend or shorten along its own axis. A lighting assembly is connected to the end of the telescopic rod opposite to the support rod; A traction mechanism is provided on the support rod; and The video component is connected to the traction mechanism and is able to move towards or away from the telescopic pole in a vertical direction under the drive of the traction mechanism.

2. The reactor pool video device according to claim 1, characterized in that, The traction mechanism includes: a winch assembly, a first guide wheel assembly, a second guide wheel assembly, and a traction rope; The winch assembly is mounted on the support rod, and the first guide wheel group and the second guide wheel group are respectively mounted at both ends of the telescopic rod; The traction rope is laid on the first guide wheel assembly and the second guide wheel assembly; One end of the traction rope is connected to the winch assembly, and the other end is connected to the video assembly. The winch assembly is used to wind the traction rope.

3. The reactor pool video device according to claim 2, characterized in that, The telescopic rod includes a first rod and a second rod, one end of the first rod is connected to the support rod, and the second rod slides with the first rod along the axial direction of the telescopic rod; The first guide wheel assembly is located at the end of the first rod opposite to the second rod, and the second guide wheel assembly is located at the end of the second rod opposite to the first rod.

4. The reactor pool video device according to claim 3, characterized in that, The video component includes a camera and cables; the first guide wheel assembly includes a first frame, a first wheel, and a second wheel; and the second guide wheel assembly includes a second frame, a third wheel, and a fourth wheel. The first frame is mounted on the first rod, the first wheel and the second wheel are arranged vertically, and the two ends of the first wheel are rotatably connected to the first frame about a horizontal axis. The second frame is mounted on the second rod, and the two ends of the second wheel are rotatably connected to the first frame about a horizontal axis; the third wheel and the fourth wheel are arranged vertically, and the two ends of the third wheel are rotatably connected to the second frame about a horizontal axis, and the two ends of the fourth wheel are rotatably connected to the second frame about a horizontal axis. The traction rope is laid on the first wheel and the third wheel, and the cable is laid on the second wheel and the fourth wheel. The end of the traction rope away from the third wheel is connected to the camera, and the end of the cable away from the second wheel is connected to the camera.

5. The reactor pool video device according to claim 1, characterized in that, The reactor pool video device also includes a connecting component, which is connected to the support, and the end of the support rod opposite to the telescopic rod is rotatably connected to the connecting component.

6. The reactor pool video device according to claim 5, characterized in that, The connecting assembly includes a mounting base, a bearing, and fasteners; The fastener passes through the fixing seat and detachably connects the fixing seat to the support. The outer ring of the bearing is located at the end of the fixed seat away from the support, and the end of the support rod away from the telescopic rod is connected to the inner ring of the bearing.

7. The reactor pool video device according to claim 6, characterized in that, The fixed seat includes a sleeve and a connecting part. The support includes a seat body and a sleeve connected together. The sleeve is sleeved on the sleeve. The connecting part is connected to the end of the sleeve away from the seat body. The outer ring of the bearing is disposed at the end of the connecting part away from the sleeve. The fastener passes through the sleeve and abuts against the sleeve.

8. The reactor pool video device according to claim 4, characterized in that, The lighting assembly includes a main lighting section and an auxiliary lighting section. The main lighting section is connected to the end of the telescopic rod opposite to the support rod, and the auxiliary lighting section is connected to the end of the telescopic rod opposite to the support rod.

9. The reactor pool video device according to claim 8, characterized in that, The reactor pool video device also includes a rotating assembly, which includes a first rotating part and a second rotating part, wherein the first rotating part is connected to the telescopic rod. The second rotating part is connected to the first rotating part, and the first rotating part is used to drive the second rotating part to rotate about a horizontal axis. The auxiliary lighting part is connected to the second rotating part, and the second rotating part is used to drive the auxiliary lighting part to rotate about a vertical axis; or The second rotating part is connected to the first rotating part, and the first rotating part is used to drive the second rotating part to rotate around a vertical axis. The auxiliary lighting part is connected to the second rotating part, and the second rotating part is used to drive the auxiliary lighting part to rotate around a horizontal axis.

10. A reactor pool video system, characterized in that, The reactor pool video system includes: a remote control module, a display module, and the reactor pool video device according to any one of claims 1-9; The remote control module is connected to the display module, the lighting component, and the video component, and is used to control the lighting component and the video component, and to transmit the image of the video component to the display module.