A fuel rod stopper

Abstract

The present application belongs to the field of machinery, and particularly relates to a material blocking device for fuel rods. The device comprises a shaft, a left support plate, a right support plate and a machine base. The left support plate is fixed to the left side of the machine base, and the right support plate is fixed to the right side of the machine base. The upper part of the left support plate and the right support plate is provided with a hole, and the shaft passes through the hole in the upper part of the left support plate and the right support plate. A protrusion is fixed to the side of the shaft close to the left support plate. A short block and a long block are fixed to the left support plate. A blocking column is fixed to the middle position of the shaft. A handle is fixed to the outside of the shaft on the side of the right support plate. The device has the following advantages: (1) sufficient space is left below the reading number of the fuel rod; (2) the use of the material blocking device conforms to the operation specification of material blocking and releasing; (3) 6-point equidistant material blocking can ensure the straightness requirement of the fuel rod during the material blocking process; (4) the position and space below the reading number of the fuel rod can be adjusted by adjusting the installation position; and (5) the operation is convenient, and the material blocking and releasing process is easily realized.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of machinery, and particularly relates to a fuel rod material blocking device. BACKGROUND

[0002] During the flow process of fuel rods on a transmission line, different operations (such as welding, X-ray inspection, etc.) are performed in different processes, and the rod number of the fuel rod needs to be recorded before and after the operation is performed to track the state of each rod in each process. When manually recording the bar code data thereon, it is often required to scan and read the number at a fixed position, and the rod number data of each fuel rod is manually recorded by the staff each time. Since the support material rod on the transmission line has a certain inclination, the fuel rod will automatically roll downward, and when the support material rod is fully arranged, the manual number reading operation is not convenient (the code scanner has a certain width, and the fuel rods arranged closely together do not leave space for the code scanner to contact the rods), in order to solve the above problems, the original method is to tie a contactable cloth strip on the support material rod, and a certain space is left for the support material rod through the cloth strip to facilitate manual data recording, but since the number reading is completed, the staff often needs to untie the cloth strip to make the fuel rod roll downward freely, which increases the repetitive operation and reduces the transmission efficiency, and the method has poor reliability and is difficult to guarantee the straightness of the fuel rod (the cloth strip is soft, and the fuel rod will have a certain impact force during the downward rolling process, which will drive the cloth strip to move downward, if part of the cloth strip moves and part of the cloth strip does not move, multiple points that are not collinear will be formed, thereby making it difficult to guarantee the straightness of the fuel rod). SUMMARY

[0003] The purpose of the present application is to provide a fuel rod material blocking device to solve the problems of no space below the fuel rod number reading, non-standard cloth strip material blocking, difficulty in guaranteeing the straightness of the fuel rod by cloth strip material blocking, material blocking at any position on the transmission line, and time-consuming and laborious personnel cloth strip tying / untying.

[0004] The technical scheme of the present application is as follows: a fuel rod material blocking device, comprising a shaft, a left support plate, a right support plate and a machine base; the left support plate is fixed on the left side of the machine base, the right support plate is fixed on the right side of the machine base, the upper part of the left support plate and the right support plate is provided with a hole, the shaft passes through the hole in the upper part of the left support plate and the right support plate, a protruding block is fixed on the side of the shaft close to the left support plate, a short block and a long block are fixed on the left support plate, a blocking column is fixed at the middle position of the shaft, and a handle is fixed on the outside of the shaft on the side of the right support plate.

[0005] The handle is fixed to the shaft through a bolt and a nut.

[0006] The handle is fixed to the shaft through a tolerance fit.

[0007] The shaft has a structure in which the middle diameter is large and the diameters of the two ends are small.

[0008] The hole diameter of the upper end of the left support plate and the right support plate is larger than the diameter of the small shaft at both ends of the shaft, and the diameter of the middle of the shaft is larger than the hole diameter of the hole at the upper end of the left support plate and the right support plate.

[0009] The left support plate is fixed on the left side of the machine base through locking screws.

[0010] The right support plate is fixed on the right side of the machine base through locking screws.

[0011] The shaft is fixed with a protruding block on the side close to the left support plate through welding.

[0012] The stop column comprises two structures, and the part fixed on the shaft is a metal structure.

[0013] The metal structure is sleeved with a polyethylene ring, and the polyethylene ring is in clearance fit with the metal structure.

[0014] The beneficial effects of the present application are as follows: (1) sufficient space is left below the fuel rod reading number; (2) the use of the material stopping device conforms to the material feeding / stoppage operation specification; (3) 6-point equidistant stopping can ensure the straightness requirement in the fuel rod stopping process; (4) by adjusting the installation position, the position and space below the fuel rod reading number can be adjusted; (5) the operation is convenient, and the stopping / material feeding process is easy to realize; (6) the stopping / material feeding efficiency is improved by 4 times. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a front view of the material stopping device for fuel rods provided by the present application;

[0016] Figure 2 It is a top view of the material stopping device for fuel rods provided by the present application;

[0017] Figure 3 It is a left view of the material stopping device for fuel rods provided by the present application;

[0018] Figure 4 It is a schematic view without the material stopping device;

[0019] Figure 5 It is a schematic view with the material stopping device;

[0020] Figure 6 It is a front view of the material stopping device for fuel rods provided by the present application in the material feeding state;

[0021] Figure 7 It is a left view of the material stopping device for fuel rods provided by the present application in the material feeding state.

[0022] Figure: 1 shaft, 2 protruding block, 3 left support plate, 4 blocking column, 5 right support plate, 6 bolt, 7 handle, 8 nut, 9 locking screw, 10 machine base, 11 long block, 12 short block, 13 fuel rod, 14 supporting rod, 15 fuel rod blocking device, 16 space left. DETAILED DESCRIPTION

[0023] The application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] As Figures 1-3 shown, a fuel rod blocking device includes a shaft 1, a protruding block 2, a left support plate 3, a blocking column 4, a right support plate 5, a bolt 6, a handle 7, a nut 8, a locking screw 9, a machine base 10, a long block 11 and a short block 12.

[0025] As Figures 1-3 shown, a through hole is drilled in the middle of the left support plate 3, the locking screw 9 passes through the through hole in the middle of the left support plate 3 and is fixed to the left side of the machine base 10, a through hole is drilled in the middle of the right support plate 5, the locking screw 9 passes through the through hole in the middle of the right support plate 5 and is fixed to the right side of the machine base 10, holes are opened in the upper parts of the left support plate 3 and the right support plate 5, the shaft 1 passes through the holes in the upper parts of the left support plate 3 and the right support plate 5,

[0026] The shaft 1 can rotate to control the blocking and discharging actions. In order to ensure that the shaft 1 will not fall due to axial movement during use, the shaft 1 has a structure with a large middle diameter and small diameters at both ends, and the through holes in the upper parts of the left support plate 3 and the right support plate 5 are slightly larger than the diameters of the small shafts at both ends of the shaft 1, which can ensure that the small shafts at both ends can pass freely, while the middle shaft has a diameter larger than the size of the through holes in the upper parts of the left support plate 3 and the right support plate 5, which can realize the axial constraint of the shaft 1 within a certain range and prevent the shaft 1 from sliding out of the left support plate 3 or the right support plate 5. The protruding block 2 is fixed to the side close to the left support plate 3 of the shaft 1 by welding, as Figure 3 shown, the short block 12 and the long block 11 are fixed to the left support plate 3, and the shaft 1 is pressed on the left support plate 3 and the right support plate 5 by gravity; the protruding block 2 is in different positions and contacts the long block 11 or the short block 12 to realize the discharging or blocking action.

[0027] When blocking material: the protruding block 2 and the short block 12 (not in contact with the long block 11) are in pressure contact together; when discharging material: the protruding block 2 and the long block 11 (not in contact with the short block 12) are in pressure contact together. The left support plate 3 is used for supporting the whole set of devices, and also plays a limiting role within a certain range to avoid the shaft 1 from sliding out and falling. The left support plate 3 has a slot hole slightly larger than the left end small shaft of the shaft 1 and the protruding block 2 on the upper part, which can realize the insertion of the left end small shaft of the shaft 1 and the protruding block 2; a through hole is drilled in the middle part, which is fixed on the machine base 10 through a locking screw 9. The left support plate 3 is subjected to the gravity of the shaft 1; the left support plate 3 is connected with the long block 11 and the short block 12 through welding, and the cooperation of the protruding block 2 on the shaft 1 with the long block 11 and the short block 12 realizes the discharging and blocking actions; the left support plate 3 is fixed on the machine base 10 by the locking screw 9 through pressure.

[0028] The shaft 1 is fixed with a blocking column 4 at the middle position, the blocking column 4 is in direct contact with the fuel rod, and the blocking of the fuel rod is realized through the blocking column 4. In order to avoid scratching the fuel rod, the blocking column 4 comprises two structures, the part welded on the shaft 1 is a metal structure, and the metal structure is sleeved with a polyethylene ring, the polyethylene ring and the metal structure are in clearance fit, when the shaft 1 is moved to discharge material, because the polyethylene ring and the fuel rod are in rolling friction, the friction force is small, so that the generation of new injuries or marks on the surface of the fuel rod can be guaranteed. The blocking column 4 is fixed on the shaft 1 by welding. The right support plate 5 is used for supporting the whole set of devices, and also plays a limiting role within a certain range to avoid the shaft 1 from sliding out and falling. The right support plate 5 has a through hole drilled on the upper part, which is slightly larger than the size of the right end small shaft of the shaft 1, and is subjected to the gravity of the shaft 1; a through hole is drilled in the middle part of the right support plate 5, which is fixed on the machine base 10 by the locking screw 9 through pressure.

[0029] The bolt 6 is used to connect the handle 7 with the shaft 1, and the bolt 6 is connected with the nut 8 through a threaded structure. The handle 7 is used for manual discharging / blocking operation, which can increase comfort and is more convenient for manual operation. The handle 7 is matched with the shaft 1 through tolerance fit; and is subjected to the pressure of the bolt 6 and the nut. The nut 8 is used in cooperation with the bolt 6. The machine base 10 is the main support of the whole set of devices, and is responsible for supporting all parts thereon. The long block 11 is used for blocking the protruding block 2, so that the blocking column 4 is just rotated by 90° to realize discharging, but can prevent the shaft 1 from turning too much. The long block 11 is fixed on the left support plate 3 by welding, and is in contact with the protruding block 2 when discharging. The short block 12 is used for blocking the protruding block 2, so that the blocking column 4 is perpendicular to the horizontal plane to realize blocking. The short block 12 is fixed on the left support plate 3 by welding, and is in contact with the protruding block 2 when blocking.

[0030] The use method of the present application is as follows:

[0031] Discharging: hold the handle 7, push the handle 7 along the axial direction (from right to left) until the protrusion 2 does not contact the short block 12, release the handle, the shaft 1 is driven to overturn by the gravity of the stop post 4, when rotating 90°, the protrusion 2 contacts the long block 11, the stop post 4 and the shaft 1 stop rotating, at this time, since the stop post 4 is below the fuel rod height, the fuel rod can freely roll down.

[0032] Blocking: the reverse process of the above discharging. Hold the handle 7, rotate the handle 7 counterclockwise by about 90°, after the protrusion contacts the short block 12, continue to pull along the axial direction (from left to right), stop pulling when the protrusion 2 is partially located in the middle of the left support plate 3, at this time, the protrusion 2 is clamped in the slot hole of the left support plate 3, the stop post 4 is perpendicular to the horizontal plane, and the rear fuel rod is placed down, the blocking at the position can be realized.

[0033] From Figure 4 It can be seen that when the fuel rods are all closely arranged together, it is difficult for a person to read the number with a handheld code scanner, and as Figure 5 shown, when the blocking device is used to block the fuel rods at a certain position, a certain space is left below, facilitating reading the number of the fuel rods.

[0034] The innovation points of the present application are as follows:

[0035] (1) Split structure

[0036] The whole device is designed as 12 parts, which are separated, can be quickly installed together to form a whole, and can be quickly disassembled, which is beneficial to the maintenance of the device. Since the stop post 4 directly contacts the fuel rod, it is a vulnerable part. If the stop post 4 is only made of a metal part welded on the shaft 1, although it is convenient for welding and has sufficient supporting force, the metal can easily damage the fuel rod and add new wounds or marks on the surface thereof. Therefore, the stop post 4 is made of two parts: the inner part is a metal column welded with the shaft 1, and the outer part is a polyethylene ring, which can ensure the surface quality of the fuel rod.

[0037] (2) Overturning structure

[0038] If the stop post 4 moves along the axial direction to discharge, the fuel rod and the stop post 4 generate sliding friction, the friction force is large, and it is easy to cause scratches or marks on the surface thereof. Therefore, the device is designed to have a rolling friction structure, including the stop post 4 discharging along the vertical direction of the axial direction of the fuel rod and the polyethylene ring gap matching the metal column, which are all rolling friction, so as to reduce the potential impact of the friction force on the surface of the fuel rod.

[0039] (3) long and short blocks: long block 11 and short block 12 are respectively in contact with the convex block 2 to realize the actions of discharging and blocking, wherein the size of the long block 11 extending out of the left support plate 3 is longer than that of the short block 12, and through the cooperation of the convex block 2, the switching can be quickly performed; and the long block 11 and the short block 12 are arranged at 90° on the left support plate 3, mainly considering that when blocking, the blocking column 4 needs to be perpendicular to the horizontal plane and fully contact with the fuel rod; when discharging, the blocking column 4 will not freely deflect too large an angle (if the angle deflects too large, it may be turned over from the other side, partially contact the fuel rod, and affect the discharging), and since the diameter of the shaft 1 is larger than the diameter of the blocking column 4, when the blocking column 4 is horizontal, the fuel rod will not contact the blocking column 4.

[0040] The advantages of the present application are as follows:

[0041] (1) easy to operate

[0042] Only need to push the handle 7, and the discharging process can be realized after releasing the hand; the handle 7 is reversely rotated, and the blocking can be realized by pulling back.

[0043] (2) high reliability

[0044] The device can effectively form 6 coplanar support points, and is more standardized and reliable in use.

[0045] (3) ensure straightness

[0046] Since 6-point support is formed, the straightness requirement of the fuel rod can be ensured, and at the same time, since the design of overturning and rolling friction is adopted, no new injury or trace is added on the surface of the fuel rod.

Claims

1. A material blocking device for a fuel rod, characterized by: The utility model provides a material feeding device, which comprises a shaft, a left support plate, a right support plate and a base; the left support plate is fixed on the left side of the base, the right support plate is fixed on the right side of the base, the upper part of the left support plate and the right support plate is provided with a hole, the shaft passes through the hole in the upper part of the left support plate and the right support plate, a protruding block is fixed on the side of the shaft close to the left support plate, a short block and a long block are fixed on the left support plate, a blocking column is fixed at the middle position of the shaft, a handle is fixed on the outer part of the side of the shaft close to the right support plate; the handle is fixed on the shaft through a bolt and a nut, the handle drives the shaft to rotate, the shaft is provided with a structure that the middle diameter is large and the diameters of the two ends are small, the protruding block is at different positions and realizes the feeding or blocking action by contacting the long block or the short block.

2. A stopper for a fuel rod as defined in claim 1, characterized in that: The handle is fixed on the shaft through a tolerance fit.

3. A stopper for a fuel rod as defined in claim 1, characterized in that: The diameter of the hole in the upper end of the left support plate and the right support plate is larger than the diameter of the small shaft at the two ends of the shaft, and the diameter of the shaft in the middle is larger than the diameter of the hole in the upper end of the left support plate and the right support plate.

4. The stopper for a fuel rod as set forth in claim 1, characterized by: The left support plate is fixed on the left side of the base through a locking screw.

5. A stopper for a fuel rod as defined in claim 1, characterized in that: The right support plate is fixed on the right side of the base through a locking screw.

6. A stopper for a fuel rod as defined in claim 1, characterized in that: The protruding block is fixed on the side of the shaft close to the left support plate through welding.

7. A stopper for a fuel rod as defined in claim 1, characterized by: The blocking column comprises two structures, and the part fixed on the shaft is a metal structure.

8. A stopper for a fuel rod as defined in claim 7, characterized in that: The metal structure is sleeved with a polyethylene ring, and the polyethylene ring and the metal structure are in clearance fit.

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