Reactor core photographing equipment for nuclear power plant

Abstract

The utility model discloses nuclear power plant reactor core photographing equipment, which comprises a mounting shell, a photographing device and a connecting assembly, the mounting shell comprises a main shell, a first side shell and a second side shell, and a space between the first side shell and the second side shell forms a mounting space; the photographing device is installed in the installation space, one end of the outer side face of the photographing device is connected with the first side shell through a wiring shaft, the other end of the outer side face of the photographing device is connected with the second side shell through a driving shaft, and a first driving assembly connected with the driving shaft is further arranged in the installation shell; the connecting assembly comprises a connecting shaft and a long rod connecting piece connected with the connecting shaft, one end of the connecting shaft is rotatably installed in the main shell, and a second driving assembly connected with the connecting shaft is further arranged in the installation shell. The nuclear power plant reactor core photographing equipment can realize multi-angle adjustment, can capture underwater pictures of different heights and visual angles, realizes multi-angle photographing inspection of a nuclear power plant reactor core, and effectively improves the detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power technology, and in particular to a nuclear power plant core photography device. Background Technology

[0002] Nuclear power plant core photography refers to the use of cameras to verify the numbering information of fuel assemblies in the reactor core after each major overhaul and refueling process. This confirms that the information matches the core loading diagram and prevents serious events such as uneven power distribution and accidental criticality caused by incorrect refueling sequence. Due to factors such as core water flow, thermal disturbance, and irradiation, core photography has long presented challenges in observing component numbering in certain areas. Furthermore, current camera equipment cannot adjust the camera angle, severely impacting the efficiency of core photography. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a nuclear power plant core photography device to solve the problem of low operating efficiency of camera devices in nuclear power plant core photography in related technologies.

[0004] The technical solution adopted by this utility model to solve its technical problem is: to construct a nuclear power plant core photography equipment, including a mounting shell, a photography device and a connecting assembly. The mounting shell has a U-shaped structure. The mounting shell includes a main shell and a first side shell and a second side shell connected to both ends of the main shell. The inner cavities of the main shell, the first side shell and the second side shell are connected. The space between the first side shell and the second side shell forms an installation space.

[0005] The photographic device is installed in the installation space, and one end of the outer side of the photographic device is connected to the first side housing through a wiring shaft, and the other end of the outer side of the photographic device is connected to the second side housing through a drive shaft. The installation housing is also provided with a first drive assembly connected to the drive shaft.

[0006] The connecting assembly includes a connecting shaft and a long rod connector connected to the connecting shaft. One end of the connecting shaft is rotatably mounted inside the main housing. The mounting housing also contains a second drive assembly connected to the connecting shaft.

[0007] In some embodiments, the first drive assembly includes a first drive motor, a first gear, a second gear, and a first transmission belt. The first drive motor is mounted on the inner bottom wall of the main housing. The first gear and the second gear are located inside the second side housing. The output end of the first drive motor is connected to the first gear. The second gear is connected to the drive shaft. The first transmission belt connects the first gear and the second gear.

[0008] In some embodiments, the first drive assembly further includes a third gear disposed between the first gear and the second gear, the third gear being used to contact the first drive belt.

[0009] In some embodiments, a bearing housing is provided inside the second side housing, the drive shaft passes through the bearing housing, and a bearing sleeved on the outer periphery of the drive shaft is provided inside the bearing housing.

[0010] In some embodiments, the bearing housing is provided with a first monitoring sensor, and the second gear is provided with a first actuating element.

[0011] In some embodiments, the second drive assembly includes a second drive motor, a fourth gear, a fifth gear, and a second transmission belt. The second drive motor is located inside the first side housing. The output end of the second drive motor is connected to the fourth gear. The fifth gear is fixedly connected to the connecting shaft. The second transmission belt connects the fourth gear and the fifth gear.

[0012] In some embodiments, the inner bottom wall of the main housing is provided with a mounting base connected to the second drive motor, the mounting base is provided with a second monitoring sensor, and the connecting shaft is provided with a second actuating element.

[0013] In some embodiments, the photographic device includes a housing, a camera, and a lens;

[0014] The housing has a first end and a second end opposite to each other. The first end of the housing is provided with a window, and the window is provided with a cover. The housing is connected to the wiring shaft and the drive shaft, and the inner cavity of the housing is in communication with the hollow inner cavity of the wiring shaft.

[0015] The camera and the lens are connected to each other and are installed inside the housing. The housing is equipped with an aperture adjustment motor and a focus adjustment motor. The output end of the aperture adjustment motor is equipped with a sixth gear that is connected to the aperture ring of the lens, and the output end of the focus adjustment motor is equipped with a seventh gear that is connected to the focus ring of the lens.

[0016] In some embodiments, the camera is mounted inside the housing via a mounting bracket, and both the aperture adjustment motor and the focus adjustment motor are connected to the mounting bracket.

[0017] In some embodiments, the nuclear power plant core photography equipment further includes a light source assembly;

[0018] The light source assembly includes an annular cover and a light source disposed within the annular cover. The annular cover is fitted around the outer periphery of the outer shell and is fixedly connected to the outer shell via connecting posts.

[0019] The following are the beneficial effects of implementing this utility model: the nuclear power plant core photography equipment can achieve multi-angle adjustment and capture underwater images at different heights and angles, realizing multi-angle photographic inspection of the nuclear power plant core. The application of this nuclear power plant core photography equipment effectively improves the inspection efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solution of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show some embodiments of this utility model and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort. In the drawings:

[0021] Figure 1 This is one of the structural schematic diagrams of a nuclear power plant core photography device in some embodiments of this utility model;

[0022] Figure 2 This is the second schematic diagram of the structure of the nuclear power plant core photography equipment in some embodiments of this utility model;

[0023] Figure 3 This is the third of the structural schematic diagrams of the nuclear power plant core photography equipment in some embodiments of this utility model;

[0024] Figure 4 This is one of the partial structural schematic diagrams of the nuclear power plant core photography equipment in some embodiments of this utility model;

[0025] Figure 5 This is the second partial structural schematic diagram of the nuclear power plant core photography equipment in some embodiments of this utility model;

[0026] Figure 6 This is the third of some structural schematic diagrams of the nuclear power plant core photography equipment in some embodiments of this utility model;

[0027] Figure 7 This is the fourth partial structural schematic diagram of the nuclear power plant core photography equipment in some embodiments of this utility model. Detailed Implementation

[0028] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0029] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" 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. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0030] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0031] See Figures 1 to 7 This utility model discloses a nuclear power plant core photography equipment, which can be applied to different tasks such as nuclear power plant core photography, spent pool inventory, and foreign object inspection. For example, it can obtain the serial number features on the fuel assembly tube seat and related components.

[0032] The nuclear power plant core photography equipment includes a mounting shell 10, a photography device 20, and a connecting assembly 30. The mounting shell 10 has a U-shaped structure and includes a main shell 11 and a first side shell 12 and a second side shell 13 connected to both ends of the main shell 11. The inner cavities of the main shell 11, the first side shell 12, and the second side shell 13 are interconnected. The space between the first side shell 12 and the second side shell 13 forms an installation space 10a (e.g., ...). Figure 1 (As shown).

[0033] The camera device 20 is installed in the installation space 10a, and one end of the outer side of the camera device 20 is connected to the first side housing 12 through the wiring shaft 40. The other end of the outer side of the camera device 20 is connected to the second side housing 13 through the drive shaft 50. The installation housing 10 is also provided with a first drive assembly 60 connected to the drive shaft 50. The first drive assembly 60 can drive the drive shaft 50 to rotate, thereby driving the camera device 20 to rotate.

[0034] The connecting assembly 30 includes a connecting shaft 31 and a long rod connector 32 connected to the connecting shaft 31. The long rod connector 32 can be used to connect a long rod, which can be detachably connected to the long rod connector 32. One end of the connecting shaft 31 is rotatably mounted inside the main housing 11. The housing 10 also has a second drive assembly 70 connected to the connecting shaft 31. The second drive assembly 70 drives the connecting shaft 31 to rotate, thereby enabling the circumferential rotation of the photographic device 20. This allows the nuclear power plant core photographic equipment to achieve multi-angle adjustment, capture underwater images at different heights and angles, and the photographic device 20 can rotate horizontally around its own axis to track targets or capture panoramic images, enabling multi-angle photographic inspection of the nuclear power plant core.

[0035] In some embodiments, the photographic device 20 can achieve a pitch motion of ±90° in the vertical direction and a rotation motion of 230° around its own axis in the horizontal direction.

[0036] Combination Figure 4 , Figure 6 as well as Figure 7In some embodiments, the first drive assembly 60 includes a first drive motor 61, a first gear 62, a second gear 63, and a first transmission belt 64. The first drive motor 61 is mounted on the inner bottom wall of the main housing 11. The first gear 62 and the second gear 63 are located inside the second side housing 13. The output end of the first drive motor 61 is connected to the first gear 62, and the second gear 63 is connected to the drive shaft 50. The first transmission belt 64 connects the first gear 62 and the second gear 63. The first transmission belt 64 can be a synchronous belt, and the first drive motor 61 can be a servo motor. Servo motors have high adjustment accuracy and forward / reverse rotation functions.

[0037] Combination Figure 4 , Figure 6 as well as Figure 7 In some embodiments, the first drive assembly 60 further includes a third gear 65, which is disposed between the first gear 62 and the second gear 63. The third gear 65 is used to contact the first transmission belt 64 and can be used to tension the first transmission belt 64. The third gear 65 can be mounted in the second side housing 13 via a slide block. The third gear 65 can be connected to a drive member, which is used to drive the third gear 65 to contact or move away from the first transmission belt 64. The drive member includes, but is not limited to, a drive motor coupled with a lead screw transmission structure connected to the slide block, or the drive member includes, but is not limited to, a cylinder, with the cylinder's extension rod connected to the slide block. Of course, in some embodiments, the third gear 65 may not be provided; no specific limitation is made here.

[0038] Combination Figure 4 , Figure 6 as well as Figure 7 In some embodiments, the second side housing 13 is provided with a bearing seat 66, the drive shaft 50 passes through the bearing seat 66, and the bearing seat 66 is provided with a bearing 67 sleeved on the outer periphery of the drive shaft 50.

[0039] Combination Figure 4 , Figure 6 as well as Figure 7 In some embodiments, the bearing housing 66 is provided with a first monitoring sensor 68, and the second gear 63 is provided with a first actuating element 69, so as to monitor the adjustment status of the drive shaft 50. The first monitoring sensor 68 includes, but is not limited to, proximity switches, limit switches, microwave ranging sensors or infrared ranging sensors, etc., which are not specifically limited here.

[0040] Combination Figure 5 , Figure 6 as well as Figure 7In some embodiments, the second drive assembly 70 includes a second drive motor 71, a fourth gear 72, a fifth gear 73, and a second transmission belt 74. The second drive motor 71 may be located inside the first side housing 12, and its output end is located inside the first side housing 12 and connected to the fourth gear 72. The fifth gear 73 is fixedly connected to the connecting shaft 31, and the second transmission belt 74 connects the fourth gear 72 and the fifth gear 73. The second drive motor 71 may be a servo motor, which has high adjustment accuracy and forward / reverse rotation capabilities. The second transmission belt 74 may be a synchronous belt.

[0041] Combination Figure 5 , Figure 6 as well as Figure 7 In some embodiments, the inner bottom wall of the main housing 11 is provided with a mounting base 75 connected to the second drive motor 71. The mounting base 75 is provided with a second monitoring sensor 76, and the connecting shaft 31 is provided with a second actuating element 77, so as to monitor the adjustment status of the connecting shaft 31. The second monitoring sensor 76 includes, but is not limited to, proximity switches, limit switches, microwave ranging sensors or infrared ranging sensors, etc., which are not specifically limited here.

[0042] like Figure 4 and Figure 6 As shown, in some embodiments, a circuit board 90 may also be provided inside the second side housing 13. The circuit board 90 may be connected to the first drive motor 61, the first monitoring sensor 68, the second drive motor 71, the second monitoring sensor 76, etc., via wired or wireless means. The circuit board 90 may be, but is not limited to, a PCB board.

[0043] In some embodiments, the main housing 11 may further include a cylindrical portion 14 (such as...). Figure 1 As shown), the connecting shaft 31 is mounted on the cylindrical portion 14, and the portion of the connecting shaft 31 located inside the cylindrical portion 14 may be provided with a bearing and a dynamic sealing structure, which is not specifically limited here. In some embodiments, the connecting shaft 31 may be a hollow shaft, and the portion of the connecting shaft 31 located outside the main housing 11 may also be provided with a waterproof socket 33 (e.g., Figure 1 (As shown), to facilitate cable connection. Of course, the waterproof socket 33 may not be installed; no specific limitation is made here.

[0044] In some embodiments, the connecting shaft 31, the wiring shaft 40, and the drive shaft 50 may be equipped with Glyd rings to achieve dynamic sealing during rotational motion.

[0045] like Figures 1 to 7As shown, in some embodiments, the photographic device 20 includes a housing 21, a camera 22, and a lens 23. The photographic device 20 can acquire image information of the structure of a nuclear power plant reactor core, including but not limited to image information and video information.

[0046] The outer casing 21 is generally cylindrical in shape and has a first end and a second end. The first end of the outer casing 21 is provided with a viewing window 211, and the viewing window 211 is provided with a cover 24 (e.g., ...). Figure 2 (As shown); the housing 21 is connected to the cable routing shaft 40 and the drive shaft 50, and the inner cavity of the housing 21 communicates with the hollow inner cavity of the cable routing shaft 40. The cable routing shaft 40 can be used for cable routing, and the cable can connect the camera 22 to external monitoring equipment such as an industrial control computer or a nuclear power plant control platform, and can be used for signal and data transmission. Of course, the camera 22 can also use wireless transmission for data transmission, which is not specifically limited here.

[0047] The camera 22 and the lens 23 are interconnected and mounted inside the housing 21. The end of the lens 23 furthest from the camera 22 is positioned opposite the pressure cover 24. The housing 21 contains an aperture adjustment motor 25 and a focus adjustment motor 26. The output end of the aperture adjustment motor 25 has a sixth gear 251 connected to the aperture ring 231 of the lens 23 to adjust the aperture size of the lens 23. The output end of the focus adjustment motor 26 has a seventh gear 261 connected to the focus ring 232 of the lens 23 to adjust the focus of the lens 23.

[0048] Preferably, the camera 22 employs a high-performance color CMOS sensor, capable of achieving a frame rate of 26 frames per second at a resolution of 20 megapixels. The surface field of view of this nuclear power plant core photography equipment is approximately 500mm*500mm, and the underwater field of view is approximately 350mm*350mm.

[0049] like Figure 6 and Figure 7 As shown, in some embodiments, the camera 22 is mounted inside the housing 21 via a mounting bracket 27, and both the aperture adjustment motor 25 and the focus adjustment motor 26 are connected to the mounting bracket 27.

[0050] like Figure 2 As shown, the nuclear power plant core photography equipment also includes a light source assembly 80 to improve the working environment brightness of the nuclear power plant core photography equipment, thereby obtaining clearer image information; the light source assembly 80 includes an annular cover 81 and a light source 82 disposed within the annular cover 81. The annular cover 81 is fitted around the outer periphery of the outer shell 21, and the annular cover 81 is fixedly connected to the outer shell 21 by a connecting post 83. The connecting post 83 may be one or more, and the light source 82 includes, but is not limited to, an LED light source.

[0051] The nuclear power plant's reactor core photography equipment, after actual testing and verification during a major overhaul of the nuclear power plant, completed the inspection of 157 fuel assemblies in the reactor core in just 57 minutes, effectively improving the efficiency of inspection and testing.

[0052] In addition, the nuclear power plant's core photography equipment has a relatively compact structure, making it better suited to the working environment of the nuclear power plant core.

[0053] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A nuclear power plant core photographing apparatus, characterized by, The utility model provides a kind of camera module, including installation shell (10), photographic device (20) and connecting assembly (30), the installation shell (10) is U-shaped structure, the installation shell (10) includes main shell (11) and with the first side shell (12) and second side shell (13) being connected to both ends of the main shell (11), the inner cavity of the main shell (11), the first side shell (12) and second side shell (13) are communicated and are arranged, and the space between the first side shell (12) and the second side shell (13) forms installation space (10a). The photographic device (20) is installed in the installation space (10a), and one end of the outer side of the photographic device (20) is connected with the first side shell (12) by wire shaft (40), and the other end of the outer side of the photographic device (20) is connected with the second side shell (13) by driving shaft (50), and the installation shell (10) is further provided with the first driving assembly (60) connected with the driving shaft (50). The connecting assembly (30) includes connecting shaft (31) and long rod connecting piece (32) connected with the connecting shaft (31), one end of the connecting shaft (31) is rotatably installed in the main shell (11), and the installation shell (10) is further provided with the second driving assembly (70) connected with the connecting shaft (31).

2. The nuclear power plant core photographing apparatus according to claim 1, characterized by The first driving assembly (60) includes first driving motor (61), first gear (62), second gear (63) and first transmission belt (64), the first driving motor (61) is installed on the inner bottom wall of the main shell (11), the first gear (62) and the second gear (63) are located in the second side shell (13), the output end of the first driving motor (61) is connected with the first gear (62), the second gear (63) is connected with the driving shaft (50), and the first transmission belt (64) connects the first gear (62) and the second gear (63).

3. The nuclear power plant core photographing apparatus according to claim 2, characterized by The first driving assembly (60) further includes third gear (65), the third gear (65) is arranged between the first gear (62) and the second gear (63), and the third gear (65) is used for being in contact with the first transmission belt (64).

4. The nuclear power plant core photographing apparatus according to claim 3, characterized by The second side shell (13) is provided with bearing seat (66), the driving shaft (50) is arranged in the bearing seat (66), and the bearing seat (66) is provided with bearing (67) arranged on the outer periphery of the driving shaft (50).

5. The nuclear power plant core photographing apparatus according to claim 4, characterized by The bearing seat (66) is provided with first monitoring sensor (68), and the second gear (63) is provided with first touch piece (69).

6. The nuclear power plant core photographing apparatus according to claim 1, characterized by The second driving assembly (70) comprises a second driving motor (71), a fourth gear (72), a fifth gear (73) and a second transmission belt (74), the second driving motor (71) is located in the first side shell (12), the output end of the second driving motor (71) is connected with the fourth gear (72), the fifth gear (73) is fixedly connected with the connecting shaft (31), and the second transmission belt (74) connects the fourth gear (72) and the fifth gear (73).

7. The nuclear power plant core photographing apparatus according to claim 6, characterized by The inner bottom wall of the main shell (11) is provided with a mounting seat (75) connected with the second driving motor (71), the mounting seat (75) is provided with a second monitoring sensor (76), and the connecting shaft (31) is provided with a second touch piece (77).

8. The nuclear power plant core photographing apparatus according to claim 1, characterized by The camera device (20) comprises a shell (21), a camera (22) and a lens (23); The shell (21) has opposite first and second ends, the first end of the shell (21) is provided with a window (211), the window (211) is provided with a gland (24), the shell (21) is connected with the wiring shaft (40) and the driving shaft (50), and the inner cavity of the shell (21) is in communication with the hollow inner cavity of the wiring shaft (40); The camera (22) and the lens (23) are connected with each other and are installed in the shell (21), the shell (21) is provided with an aperture adjusting motor (25) and a focal length adjusting motor (26), the output end of the aperture adjusting motor (25) is provided with a sixth gear (251) connected with an aperture gear ring (231) of the lens (23), and the output end of the focal length adjusting motor (26) is provided with a seventh gear (261) connected with a focal length gear ring (232) of the lens (23).

9. The nuclear power plant core photographing apparatus according to claim 8, characterized by The camera (22) is installed in the shell (21) through a fixing seat (27), and the aperture adjusting motor (25) and the focal length adjusting motor (26) are connected with the fixing seat (27).

10. The nuclear power plant core photographing apparatus according to claim 8, characterized by The nuclear power plant core photographing equipment further comprises a light source assembly (80); The light source assembly (80) comprises a ring-shaped cover (81) and a light source (82) arranged in the ring-shaped cover (81), the ring-shaped cover (81) is sleeved on the outer periphery of the shell (21), and the ring-shaped cover (81) is fixedly connected with the shell (21) through a connecting column (83).

Images