Drum net piece defect identification device

Abstract

The utility model relates to a drum net sheet defect identification device, which comprises a connecting mechanism, an image acquisition mechanism and two illuminating lamps, the two illuminating lamps are distributed left and right, the two illuminating lamps are connected with a handrail of a pump room through the connecting mechanism, and the image acquisition mechanism is connected with the handrail of the pump room; the illuminating lamp is in a long strip shape and is parallel to the left-right direction. The connecting mechanism comprises a lifting assembly and two supporting assemblies, the lifting assembly is located between the two illuminating lamps, the two supporting assemblies correspond to the two illuminating lamps in a one-to-one mode, and the supporting assemblies are located on the sides, away from the lifting assembly, of the illuminating lamps. The lamp tube is lightened to generate light rays which act on the mesh, the image acquisition precision is improved, in addition, in the storage process, the plane sides of the two illuminating lamps are attached, the two illuminating lamps are fixed through the clamping rings, the effect of protecting the lamp tube is achieved, and the protection performance is improved.

Description

Technical Field

[0001] This utility model relates to a defect identification device for drum mesh sheets, belonging to the field of nuclear power drum mesh monitoring technology. Background Technology

[0002] In nuclear power plant cooling systems, drum filters are used in conjunction with upstream trash racks to intercept suspended and floating debris larger than 3mm in diameter in seawater. The debris is carried to the surface and then flushed away through backwashing lines to ensure the normal operation of downstream equipment. With diameters exceeding 20m, drum filters are rotating filtration devices with mesh panels mounted on the circumference of a drum-shaped frame. Water enters the drum filter from the outer circumference, is filtered by the mesh, and then flows out along one side of the filter. When foreign objects in the water source clog the mesh panels, it reduces the cooling water flow rate of the nuclear power plant. When the cooling water flow rate drops to a safe limit, it triggers an emergency shutdown of the nuclear power plant, affecting its safe operation. Furthermore, the mesh panels typically operate in seawater with high salinity, and the influence of water flow makes them susceptible to structural corrosion and damage, affecting the filtration capacity of the drum filters and allowing oversized foreign objects to enter the cooling water pipes, threatening the safe operation of critical cooling equipment in the nuclear power plant. Therefore, it is necessary to regularly monitor the mesh of the nuclear power plant's grid to ensure that the mesh is not blocked or structurally damaged.

[0003] Chinese utility model patent CN117011257A discloses a method, system, and computer equipment for detecting the mesh of a nuclear power plant's drum mesh. The method includes: acquiring full-coverage images of the mesh using an array camera while the drum mesh rotates, obtaining multiple local images of the mesh in both the axial and circumferential directions; processing each local image to identify the mesh hole contours and marking the positions of the corresponding mesh holes in the local image based on the contours; registering and fusing the multiple local images in both the axial and circumferential directions to obtain a spliced ​​image of the mesh; calculating the area of ​​each mesh hole in the spliced ​​image and determining whether the mesh holes are abnormal based on the calculated areas. Implementing this utility model reduces labor intensity and operational risks, while also achieving higher accuracy and ensuring the safe operation of the nuclear power plant's cooling equipment. However, in the existing technology, because the equipment is located in a semi-enclosed indoor space with no strong lighting and is relatively dark, and there is also a lot of water vapor, it affects the accuracy of mesh recognition.

[0004] Therefore, there is a need for a device to identify defects in drum-shaped wire mesh to improve the accuracy of mesh identification. Summary of the Invention

[0005] The technical problem to be solved by this utility model is: in order to overcome the shortcomings of the prior art, to provide a drum mesh defect identification device to improve the mesh identification accuracy.

[0006] The technical solution adopted by this utility model to solve the above problems is as follows: a drum mesh defect identification device, including a connecting mechanism, an image acquisition mechanism and two lighting lamps, the two lighting lamps are distributed on the left and right, and both lighting lamps are connected to the railing of the pump room through the connecting mechanism. The image acquisition mechanism is connected to the railing of the pump room.

[0007] The lighting lamp is long and narrow, and it is parallel to the left and right directions.

[0008] The connecting mechanism includes a lifting assembly and two support assemblies. The lifting assembly is located between two lights, and the two support assemblies correspond one-to-one with the two lights. The support assemblies are located on the side of the lights away from the lifting assembly. One end of each light is rotatably connected to the lifting assembly, and the other end of each light is connected to the railing through the support assemblies.

[0009] The lifting assembly includes a fixed tube, a telescopic rod, and a connecting rod. Both the fixed tube and the telescopic rod are vertically arranged. The bottom end of the telescopic rod is inserted into the fixed tube, and the telescopic rod is slidably connected to the fixed tube. The telescopic rod is locked to the fixed rod by a first screw. One end of the connecting rod is rotatably connected to the telescopic rod, and the other end of the connecting rod is inserted into a rotating rod. The rotating rod is parallel to the lighting lamp, and the rotating rod is rotatably connected to the connecting rod. The rotating rod is locked to the connecting rod, and two lighting lamps are rotatably connected to the two ends of the rotating rod, respectively.

[0010] Preferably, the support assembly includes a support rod, one end of which is rotatably connected to a lighting lamp, and the other end of which is provided with a first locking member, and the support rod is connected to the railing through the first locking member.

[0011] Preferably, the first locking member includes two locking strips that form a ring when they are joined together. One of the locking strips is fixedly mounted on the support rod, and the two locking strips are locked together by a third screw.

[0012] Preferably, the image acquisition mechanism includes a support plate, a second locking member is provided at the bottom of the support plate, the support plate is connected to the railing through the second locking member, a movable module is provided at the top of the support plate, a guide rod is provided on the movable part of the movable module, the guide rod is arranged vertically, a lifting ring is movably sleeved on the guide rod, the lifting ring is locked to the guide rod by a fourth screw, and a camera is connected to the lifting ring.

[0013] Preferably, the camera is rotatably connected to the lifting ring.

[0014] Preferably, the moving module includes a lead screw, which is horizontally arranged, and a slider is threaded onto the lead screw. A guide rod is fixedly mounted on the slider, and the lead screw is driven by a motor.

[0015] Preferably, the image acquisition mechanism further includes a movable base, on which an industrial control computer and a display screen are mounted.

[0016] Preferably, the vertical cross-sectional shape of the lighting lamp is semi-circular, and the planar side of the lighting lamp is concave to form a cavity, in which a lamp tube is disposed.

[0017] Preferably, the outer peripheral wall of the lighting lamp is provided with a slot.

[0018] Preferably, the rotating rod is locked to the connecting rod by a second screw.

[0019] Compared with the prior art, the advantages of this utility model are:

[0020] This utility model discloses a defect identification device for drum mesh sheets. When collecting image information of the mesh sheet, it improves the image acquisition accuracy by illuminating lamps to generate light and applying it to the mesh sheet. In addition, during the storage process, the two lamps are attached to each other on their flat sides and fixed with retaining rings, which protects the lamps and improves the protection. Attached Figure Description

[0021] Figure 1 This is a perspective view of the working state of the drum mesh defect identification device of this utility model;

[0022] Figure 2 for Figure 1 The main view;

[0023] Figure 3 for Figure 1 The left view;

[0024] Figure 4 for Figure 1 Top view;

[0025] Figure 5 for Figure 4 Enlarged view of part A;

[0026] Figure 6 A schematic diagram of the connection structure between the fixed pipe and the telescopic rod;

[0027] Figure 7 This is a schematic diagram of the connection structure between the support rod and the first locking element;

[0028] Figure 8 This is a structural diagram showing the two lights when they are stowed away.

[0029] Figure 9 for Figure 8 Enlarged view of part B;

[0030] Figure 10 A three-dimensional diagram of a lighting fixture;

[0031] Figure 11 This is a 3D view of the image acquisition mechanism.

[0032] in:

[0033] 1. Connecting mechanism; 2. Image acquisition mechanism; 3. Lighting lamp; 4. Railing.

[0034] Lifting component 11, support component 12;

[0035] Fixed tube 111, telescopic rod 112, connecting rod 113, first screw 114, second screw 115, rotating rod 116;

[0036] Support rod 121, first locking element 122;

[0037] Clip 1221, third screw 1222;

[0038] Support plate 21, second locking component 22, moving module 23, guide rod 24, lifting ring 25, fourth screw 26, camera 27, moving base 28;

[0039] Industrial computer 281, display screen 282;

[0040] Lead screw 231, slider 232, motor 233;

[0041] Cavity 31, lamp tube 32, slot 33, retaining ring 34. Detailed Implementation

[0042] like Figure 1-11 As shown, a defect identification device for a drum mesh sheet in this embodiment includes a connecting mechanism 1, an image acquisition mechanism 2, and two lighting lamps 3. The two lighting lamps 3 are arranged symmetrically on the left and right sides. Both lighting lamps 3 are connected to the railing 4 of the pump room through the connecting mechanism 1. The image acquisition mechanism 2 is connected to the railing 4 of the pump room.

[0043] The lighting lamp 3 is elongated and parallel to the left and right directions;

[0044] The vertical cross-sectional shape of the lighting lamp 3 is semi-circular, and the planar side of the lighting lamp 3 is recessed to form a cavity 31, and a lamp tube 32 is disposed in the cavity 31.

[0045] The outer peripheral wall of the lighting lamp 3 is provided with a slot 33;

[0046] The connecting mechanism 1 includes a lifting component 11 and two support components 12. The lifting component 11 is located between two lighting lamps 3. The two support components 12 correspond one-to-one with the two lighting lamps 3. The support components 12 are located on the side of the lighting lamps 3 away from the lifting component 11. One end of the lighting lamp 3 is rotatably connected to the lifting component 11, and the other end of the lighting lamp 3 is connected to the railing 4 through the support components 12.

[0047] The lifting assembly 11 includes a fixed tube 111, a telescopic rod 112, and a connecting rod 113. Both the fixed tube 111 and the telescopic rod 112 are vertically arranged. The bottom end of the telescopic rod 112 is inserted into the fixed tube 111, and the telescopic rod 112 is slidably connected to the fixed tube 111. The telescopic rod 112 is locked to the fixed rod by a first screw 114. One end of the connecting rod 113 is rotatably connected to the telescopic rod 112, and the other end of the connecting rod 113 is inserted into a rotating rod 116. The rotating rod 116 is parallel to the lighting lamp 3, and the rotating rod 116 is rotatably connected to the connecting rod 113. The rotating rod 116 is locked to the connecting rod 113 by a second screw 115. The two lighting lamps 3 are rotatably connected to the two ends of the rotating rod 116 respectively.

[0048] The support assembly 12 includes a support rod 121, one end of which is rotatably connected to the lighting lamp 3, and the other end of which is provided with a first locking member 122. The support rod 121 is connected to the railing 4 through the first locking member 122.

[0049] The first locking member 122 includes two locking strips 1221, which together form a ring. One of the locking strips 1221 is fixedly mounted on the support rod 121, and the two locking strips 1221 are locked together by a third screw 1222.

[0050] The image acquisition mechanism 2 includes a support plate 21. A second locking member 22 is provided at the bottom of the support plate 21. The support plate 21 is connected to the railing 4 through the second locking member 22. A movable module 23 is provided at the top of the support plate 21. A guide rod 24 is provided on the movable part of the movable module 23. The guide rod 24 is arranged vertically. A lifting ring 25 is movably sleeved on the guide rod 24. The lifting ring 25 is locked to the guide rod 24 by a fourth screw 26. A camera 27 is rotatably connected to the lifting ring 25.

[0051] The movable module 23 includes a lead screw 231, which is horizontally arranged. A slider 232 is threadedly connected to the lead screw 231. A guide rod 24 is fixedly arranged on the slider 232. The lead screw is driven by a motor 233.

[0052] The image acquisition mechanism 2 also includes a movable base 28, on which an industrial control computer 281 and a display screen 282 are mounted;

[0053] Working principle:

[0054] Fix the fixed pipe 111 to the railing 4 of the pump room. After adjusting the depth of the telescopic rod 112 inserted into the fixed pipe 111, tighten the first screw 114 to fix the telescopic rod 112 to the fixed pipe 111. Then, rotate the rotating rod 116 on the connecting rod 113 and tighten the second screw 115 to lock the rotating rod 116 and the connecting rod 113, thereby adjusting the lighting angle of the lighting lamp 3. Next, fix one end of the support rod 121 to the railing 4 through the first locking member 122. That is, after the two locking strips 1221 surround the railing 4, lock them with the third screw 1222 to fix the support rod 121 to the railing 4. In this way, the lighting lamp 3 is fixed to the railing 4.

[0055] The camera 27 acquires image information of the mesh, and the lamp tube 32 is lit to generate light and act on the mesh, improving the image acquisition accuracy. The camera 27, light source, lens and image acquisition card are selected according to the size, pixel accuracy and working distance of the mesh to be inspected. The industrial control computer 281 with reasonable configuration is selected according to the image size, number of units and detection speed requirements. The industrial control computer 281 is a general term for a tool that uses a bus structure to detect and control the production process and electromechanical equipment and process equipment. The detection data is displayed on the display screen 282.

[0056] In addition, when the motor 233 is started, the lead screw 231 is rotated, which drives the slider 232 to move horizontally. The movement of the slider 232 drives the guide rod 24 to move synchronously, which in turn drives the camera 27 to move horizontally. After the fourth screw 26 is loosened, the lifting ring 25 is raised and lowered on the guide rod 24, which realizes the adjustment of the position of the camera 27. At the same time, the camera 27 is rotatably connected to the lifting ring 25, which facilitates the adjustment of the angle of the camera 27.

[0057] When the drum mesh defect identification device is finished and needs to be stored, remove the fixing tube 111 and support rod 121 from the railing 4, and pull the telescopic rod 112 out from the fixing tube 111. At the same time, separate the support rod 121 from the lighting lamp 3. Then, rotate the two lighting lamps 3 around the rotating rod 116 and make the plane sides of the two lighting lamps 3 fit together. After fitting together, the two lighting lamps 3 form a cylinder, and the two slots 33 form an annular groove. Then, put the elastic retaining ring 34 into the annular groove to fix the two lighting lamps 3. In this way, the lamp tube 32 is protected.

[0058] In summary, when acquiring image information from the mesh, the light tube 32 is lit to generate light and act on the mesh, thereby improving the image acquisition accuracy. In addition, during the storage process, the two lighting lamps 3 are attached to each other on their flat sides and fixed by the retaining ring 34, which protects the lamp tube 32 and improves the protection.

[0059] In addition to the above embodiments, this utility model also includes other implementation methods. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of this utility model.

Claims

1. A device for identifying defects in drum-shaped wire mesh sheets, characterized in that: It includes a connecting mechanism (1), an image acquisition mechanism (2), and two lighting lamps (3). The two lighting lamps (3) are distributed on the left and right sides. Both lighting lamps (3) are connected to the railing (4) of the pump room through the connecting mechanism (1). The image acquisition mechanism (2) is connected to the railing (4) of the pump room. The lighting lamp (3) is long and narrow, and the lighting lamp (3) is parallel to the left and right directions; The connecting mechanism (1) includes a lifting component (11) and two support components (12). The lifting component (11) is located between two lighting lamps (3). The two support components (12) correspond one-to-one with the two lighting lamps (3). The support components (12) are located on the side of the lighting lamps (3) away from the lifting component (11). One end of the lighting lamp (3) is rotatably connected to the lifting component (11), and the other end of the lighting lamp (3) is connected to the railing (4) through the support components (12). The lifting assembly (11) includes a fixed tube (111), a telescopic rod (112), and a connecting rod (113). The fixed tube (111) and the telescopic rod (112) are both vertically arranged. The bottom end of the telescopic rod (112) is inserted into the fixed tube (111). The telescopic rod (112) is slidably connected to the fixed tube (111). The telescopic rod (112) is locked to the fixed rod by a first screw (114). One end of the connecting rod (113) is rotatably connected to the telescopic rod (112). The other end of the connecting rod (113) is inserted into a rotating rod (116). The rotating rod (116) is parallel to the lighting lamp (3). The rotating rod (116) is rotatably connected to the connecting rod (113). The rotating rod (116) is locked to the connecting rod (113). The two lighting lamps (3) are rotatably connected to the two ends of the rotating rod (116) respectively.

2. The device for identifying defects in drum-shaped mesh sheets according to claim 1, characterized in that: The support assembly (12) includes a support rod (121), one end of which is rotatably connected to a lighting lamp (3), and the other end of which is provided with a first locking member (122). The support rod (121) is connected to the railing (4) through the first locking member (122).

3. The drum mesh defect identification device according to claim 2, characterized in that: The first locking member (122) includes two locking strips (1221), which are arranged in a ring. One of the locking strips (1221) is fixedly mounted on the support rod (121), and the two locking strips (1221) are locked together by a third screw (1222).

4. The drum mesh defect identification device according to claim 1, characterized in that: The image acquisition mechanism (2) includes a support plate (21), a second locking member (22) is provided at the bottom of the support plate (21), the support plate (21) is connected to the railing (4) through the second locking member (22), a moving module (23) is provided at the top of the support plate (21), a guide rod (24) is provided on the movable part of the moving module (23), the guide rod (24) is arranged vertically, a lifting ring (25) is movably sleeved on the guide rod (24), the lifting ring (25) is locked to the guide rod (24) by a fourth screw (26), and a camera (27) is connected to the lifting ring (25).

5. The drum mesh defect identification device according to claim 4, characterized in that: The camera (27) is rotatably connected to the lifting ring (25).

6. The drum mesh defect identification device according to claim 4, characterized in that: The moving module (23) includes a lead screw (231), which is horizontally arranged. A slider (232) is threaded onto the lead screw (231), and a guide rod (24) is fixedly arranged on the slider (232). The lead screw is driven by a motor (233).

7. The drum mesh defect identification device according to claim 4, characterized in that: The image acquisition mechanism (2) also includes a movable base (28), on which an industrial control computer (281) and a display screen (282) are mounted.

8. The device for identifying defects in drum-shaped mesh sheets according to claim 1, characterized in that: The vertical cross-sectional shape of the lighting lamp (3) is semi-circular, and the planar side of the lighting lamp (3) is recessed to form a cavity (31), and a lamp tube (32) is provided in the cavity (31).

9. A defect identification device for drum mesh sheets according to claim 8, characterized in that: The outer peripheral wall of the lighting lamp (3) is provided with a slot (33).

10. A drum mesh defect identification device according to claim 1, characterized in that: The rotating rod (116) is locked to the connecting rod (113) by the second screw (115).

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