CN211856383U

CN211856383U - Appearance inspection device for new fuel assembly

Info

Publication number: CN211856383U
Application number: CN202020321276.0U
Authority: CN
Inventors: 鲁栋; 姜郭炜; 石中华; 邹森; 沈伟杰; 金金; 邓志新; 胡怡辉; 胡胜; 周忠政; 朱泽宇; 王文聪
Original assignee: Nuclear Star Nuclear Power Technology Haiyan Co ltd; CNNC Nuclear Power Operation Management Co Ltd
Current assignee: Nuclear Star Nuclear Power Technology Haiyan Co ltd; CNNC Nuclear Power Operation Management Co Ltd
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2020-11-03
Anticipated expiration: 2030-03-16

Abstract

The utility model discloses a new fuel assembly appearance inspection device, which comprises a frame and four groups of guide rail assemblies which are distributed in a rectangular shape, wherein one group of guide rail assemblies is arranged on a rotating assembly, the rotating assembly can drive the guide rail assemblies to rotate, and the rest guide rail assemblies are fixedly arranged on the frame; the guide rail assembly comprises a power assembly, a slide rail and a slide block, wherein the slide rail and the slide block are matched with each other; and a group of lighting assemblies are arranged between the adjacent guide rail assemblies. The utility model realizes the left and right movement of the video inspection component by arranging the electric guide rail, and can compensate the hoisting deviation of the fuel component; through setting up rotating assembly, can realize that one side guide rail carries out the switching at the hoist and mount in-process of fuel assembly transportation container in the rotation of 90 degrees in the horizontal plane, avoid producing the interference to hoist and mount route.

Description

Appearance inspection device for new fuel assembly

Technical Field

The utility model relates to a pressurized water reactor nuclear power station nuclear fuel assembly visual inspection technical field, in particular to new fuel assembly visual inspection device.

Background

In a pressurized water reactor nuclear power plant, as a first barrier against the leakage of radioactive substances, the fuel assemblies must ensure the integrity of the boundary during the entire period of use, and once the fuel cladding is broken, the radioactive substances are released into the coolant of the primary circuit, causing damage to the production operation. Therefore, starting from the source, ensuring that new fuel assemblies are not missing into the plant is an important fundamental task for fuel management in nuclear power plants.

Although the nuclear fuel has strict quality management measures in the whole manufacturing process to avoid various manufacturing defects, in view of the fact that the nuclear fuel can finally reach a nuclear power plant after being manufactured and needing to go through the links of boxing, container hoisting, long-distance railway or road transportation and the like, in order to avoid accidental damage of nuclear fuel assemblies caused by collision, vibration and the like of the links, nuclear power plant technicians can carry out appearance inspection on each group of fuel assemblies after the fuel assemblies are transported to the site to stop receiving new fuel assemblies with damage into the plant as far as possible.

The appearance inspection of the new fuel assembly is usually carried out in a nuclear fuel plant of a nuclear power plant, and the current common method is manual visual inspection, namely, the process of lifting the nuclear fuel assembly out of a transport container is utilized, and the two outer surfaces of the fuel assembly which are at right angles are respectively observed by two persons in a group through naked eyes to inspect whether the surface of the fuel assembly has gouges or other defects. In this way, whether the identification ability of the moving object is objectively limited by human eyes under the field illumination condition or the continuous high-intensity operation is carried out for a long time, the defect can be missed to be detected due to the inevitable visual fatigue. Another important drawback of such a procedure is that a complete original appearance record of the nuclear fuel assembly as it enters the plant cannot be kept, so that subsequently, in the event of a nuclear fuel cladding failure, an important original record for traceability is missing.

Disclosure of Invention

The utility model aims at providing a can be in pressurized water reactor nuclear power plant's nuclear fuel factory building quick assembly disassembly, do not influence nuclear fuel assembly hoist and mount operation, can develop the new fuel assembly inspection device of four surface outward appearance inspections of nuclear fuel assembly simultaneously to solve existing artifical visual inspection and easily leak the inspection, can't preserve defects such as original image document.

Therefore, the technical scheme of the utility model is that: a fuel assembly visual inspection device, characterized by: the device comprises a rack and four groups of guide rail assemblies which are distributed in a rectangular shape, wherein one group of guide rail assemblies is arranged on a rotating assembly, the rotating assembly can drive the guide rail assemblies to rotate, and the rest guide rail assemblies are fixedly arranged on the rack; the guide rail assembly comprises a power assembly, a slide rail and a slide block, wherein the slide rail and the slide block are matched with each other; and a group of lighting assemblies are arranged between the adjacent guide rail assemblies.

Preferably, in the four sets of guide rail assemblies, a second guide rail assembly and a third guide rail assembly which are parallel to each other are respectively arranged at two ends of the first guide rail assembly and in the vertical direction, and the fourth guide rail assembly is arranged at one end of the second guide rail assembly and one end of the third guide rail assembly, which are far away from the first guide rail assembly, and is vertical to the second guide rail assembly and the third guide rail assembly; the rotating assembly is positioned at one end of the first guide rail assembly close to the second guide rail assembly and can drive the first guide rail assembly to rotate by 90 degrees.

Preferably, the rotating assembly is fixedly mounted on the frame and comprises a rotating bracket, and the first guide rail assembly is mounted on the rotating bracket; the rotating bracket is fixed on a rotating shaft, the rotating shaft is connected with a shaft of a rotating motor through a coupler, and the rotating motor drives the rotating bracket and the first guide rail assembly to rotate.

Preferably, the power assembly further comprises a driving motor and a driving rod, and the driving motor is connected with the driving rod and drives the driving rod to rotate; the driving rod is movably matched with the sliding block to drive the sliding block to move along the sliding rail.

Preferably, the video inspection assembly comprises a motorized pan and tilt head, and the camera is mounted on the motorized pan and tilt head and can rotate 350 degrees in the horizontal direction and 90 degrees in the vertical direction.

Preferably, the four groups of lighting assemblies are respectively arranged on two sides of the second guide rail assembly and the third guide rail assembly, each lighting assembly comprises a fixing clamp and an LED square lamp, and the lighting assemblies are installed on the rack through the fixing clamps.

The utility model discloses set up four groups of guide rails, set up a video inspection subassembly on every group guide rail, and the video inspection subassembly can be followed the guide rail and removed, and video inspection equipment is from taking electronic cloud platform, but program control realizes 350 degrees of horizontal direction, the rotation of 90 degrees of vertical direction to the realization is to the compensation of fuel assembly hoist and mount deviation, even fuel assembly does not hoist to inspection device plane geometric center, also can realize carrying out outward appearance inspection to four faces simultaneously. The lighting assembly may provide sufficient illumination for the video inspection assembly. Meanwhile, the first group of guide rails can rotate 90 degrees and are parallel to the second group of guide rails to form a U-shaped structure with one side opened, so that the interference of the first group of guide rails to the hoisting process can be avoided in the moving process of the fuel assembly transportation container.

The utility model realizes the left and right movement of the video inspection component by arranging the electric guide rail, and can compensate the hoisting deviation of the fuel component; through setting up rotating assembly, can realize that one side guide rail carries out the switching at the hoist and mount in-process of fuel assembly transportation container in the rotation of 90 degrees in the horizontal plane, avoid producing the interference to hoist and mount route.

Drawings

The following detailed description is made with reference to the accompanying drawings and embodiments of the present invention

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the rotating assembly of the present invention;

fig. 3 is a schematic structural view of the guide rail assembly of the present invention;

fig. 4 is a schematic structural diagram of the lighting assembly of the present invention.

Labeled as: the device comprises a rotating assembly 1, a rotating support 11, a pin shaft 12, a rotating shaft 13, a positioning block 14, a motor support 15, a plum blossom coupling 16, a motor 17, a fixed support 18, a first guide rail assembly 2, a carbon fiber tube 21, a slider 22, a driving motor 23, a driving rod 24, a clamping base 25, a second guide rail assembly 3, a third guide rail assembly 4, a fourth guide rail assembly 5, a lighting assembly 6, a square lamp 61, a fixed clamp 62 and a video inspection assembly 7.

Detailed Description

See the drawings. The fuel assembly inspection device comprises four groups of guide rail assemblies, a rotating assembly 1, a lighting assembly 6, a video inspection assembly 7 and a control system.

The four groups of guide rail assemblies are distributed in a rectangular shape and comprise a first guide rail assembly 2, a second guide rail assembly 3, a third guide rail assembly 4 and a fourth guide rail assembly 5; each group of guide rail assemblies comprises two carbon fiber tubes 21, a sliding block 22, a driving motor 23 and a driving rod 24, the two parallel carbon fiber tubes 21 with equal length are fixed through clamping bases 25 on two sides to form a sliding rail with a frame structure, and the sliding block 22 is installed on the sliding rail; the driving motor 23 is installed on the clamping base 25, the driving rod 24 is arranged between the two carbon fiber tubes 21, one end of the driving rod is connected with a motor shaft of the driving motor and driven by the driving motor, and the driving rod is movably matched with the sliding block to drive the sliding block to move along the sliding rail.

The second guide rail assembly 3, the third guide rail assembly 4 and the fourth guide rail assembly 5 are fixedly arranged on a frame or a fence of a factory building, which can be quickly disassembled and assembled, through clamping modules; the first guide rail assembly is arranged on the rotating assembly, and the rotating assembly is fixedly arranged on the rack or the fence. The first guide rail assembly 2 is used as a starting point, the clockwise interval is 90 degrees, and the first guide rail assembly 2, the second guide rail assembly 3, the fourth guide rail assembly 5 and the third guide rail assembly 4 are sequentially distributed in the circumferential direction. When the four-side defect inspection is carried out on the new fuel assembly, the first guide rail assembly 2 is perpendicular to the second guide rail assembly 3 and the third guide rail assembly 4 on the two sides to form a quadrilateral-like closed structure; hoisting downwards the fuel assembly transportation container, when the hoisting port is passed through, the rotating assembly 1 drives the first guide rail assembly 2 to rotate 90 degrees clockwise, so that the first guide rail assembly 2 is parallel to the second guide rail assembly 3, an opening U-shaped structure is formed on one side, the fuel assembly transportation container can pass through the U-shaped structure, and the first guide rail assembly is prevented from interfering the hoisting process.

Rotating assembly 1 includes runing rest 11, round pin axle 12, pivot 13, locating piece 14, motor support 15, plum blossom shaft coupling 16, motor 17, fixed bolster 18, wherein, runing rest 11 is connected with pivot 13 through round pin axle 12, and the runing motor is connected with locating piece 14 through motor support 18, and the output shaft of runing motor is connected with the pivot 13 of fixing in locating piece 14 through plum blossom shaft coupling 16 for the runing motor can drive the runing rest and rotate, and first guide rail set spare is installed on this runing rest, fixed bolster 18 is installed at locating piece 14 side, and rotating assembly passes through fixed bolster 18 and installs on the frame or the rail of factory building.

The sliding blocks 22 of each group of guide rail assemblies are respectively provided with a video inspection assembly 7, and the video inspection assemblies 7 are provided with electric pan heads and can be controlled by programs to realize rotation of 350 degrees in the horizontal direction and 90 degrees in the vertical direction; the left and right movement of the guide rail assembly is matched, the compensation of the hoisting deviation of the fuel assembly can be realized, and even if the fuel assembly is not hoisted to the geometric center of the plane of the inspection device, the defect inspection of four surfaces can be simultaneously realized.

The four groups of lighting assemblies are respectively arranged on two sides of the second guide rail assembly and the third guide rail assembly, the lighting assembly 6 comprises an LED square lamp 61 and a fixing clamp 62, and the lighting assemblies are installed on a frame or a fence of a factory building through the fixing clamp.

The control system comprises a visual control interface and a deeply customized industrial upper computer. The instructions for manual operation of the control interface are as follows: firstly, switching on and off a power supply; moving the four groups of guide rail assemblies to the left and right; the rotating assembly rotates by 90 degrees; adjusting the brightness of the four groups of lighting assemblies; adjusting parameters (a tripod head elevation angle, a camera focus and a focal length) of four groups of cameras; sixthly, component unpacking and preview of an inspection picture.

Claims

1. A new fuel assembly visual inspection device characterized by: the device comprises a rack and four groups of guide rail assemblies which are distributed in a rectangular shape, wherein one group of guide rail assemblies is arranged on a rotating assembly, the rotating assembly can drive the guide rail assemblies to rotate, and the rest guide rail assemblies are fixedly arranged on the rack; the guide rail assembly comprises a power assembly, a slide rail and a slide block, wherein the slide rail and the slide block are matched with each other; and a group of lighting assemblies are arranged between the adjacent guide rail assemblies.

2. The visual inspection device of a new fuel assembly as set forth in claim 1, wherein: in the four groups of guide rail assemblies, a second guide rail assembly and a third guide rail assembly which are parallel to each other are respectively arranged at two ends of the first guide rail assembly and in the vertical direction of the first guide rail assembly, and a fourth guide rail assembly is arranged at one end of the second guide rail assembly and one end of the third guide rail assembly, which are far away from the first guide rail assembly, and is vertical to the second guide rail assembly and the third guide rail assembly; the rotating assembly is positioned at one end of the first guide rail assembly close to the second guide rail assembly and can drive the first guide rail assembly to rotate by 90 degrees.

3. The visual inspection device of a new fuel assembly as set forth in claim 1, wherein: the rotating assembly is fixedly arranged on the rack and comprises a rotating bracket, and the first guide rail assembly is arranged on the rotating bracket; the rotating bracket is fixed on a rotating shaft, the rotating shaft is connected with a shaft of a rotating motor through a coupler, and the rotating motor drives the rotating bracket and the first guide rail assembly to rotate.

4. The visual inspection device of a new fuel assembly as set forth in claim 1, wherein: the power assembly also comprises a driving motor and a driving rod, and the driving motor is connected with the driving rod and drives the driving rod to rotate; the driving rod is movably matched with the sliding block to drive the sliding block to move along the sliding rail.

5. The visual inspection device of a new fuel assembly as set forth in claim 1, wherein: the video inspection assembly comprises an electric holder, and the camera is installed on the electric holder and can rotate by 350 degrees in the horizontal direction and 90 degrees in the vertical direction.

6. The visual inspection device of a new fuel assembly as set forth in claim 1, wherein: the four groups of lighting assemblies are respectively arranged on two sides of the second guide rail assembly and the third guide rail assembly, each lighting assembly comprises a fixing clamp and an LED square lamp, and the lighting assemblies are installed on the rack through the fixing clamps.