CN114334206A - Movable shielding body and glove box - Google Patents
Movable shielding body and glove box Download PDFInfo
- Publication number
- CN114334206A CN114334206A CN202111590233.8A CN202111590233A CN114334206A CN 114334206 A CN114334206 A CN 114334206A CN 202111590233 A CN202111590233 A CN 202111590233A CN 114334206 A CN114334206 A CN 114334206A
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- shielding structure
- block
- shield
- fixed
- shielding
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- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 9
- 239000010935 stainless steel Substances 0.000 claims abstract description 9
- 239000000446 fuel Substances 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 5
- 230000013011 mating Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000012857 radioactive material Substances 0.000 description 4
- 230000005855 radiation Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003758 nuclear fuel Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012840 feeding operation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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Abstract
The invention discloses a movable shielding body, which comprises: the fixed shielding structure comprises a shielding shell and a stainless steel frame, wherein the shielding shell and the stainless steel frame are connected through screws to form a stepped feeding channel and an inner cavity; a movable shielding structure coupled with the fixed shielding structure, the movable shielding structure being movable in an axial direction relative to the fixed shielding structure; and the driving mechanism is used for providing a driving force to drive the movement of the movable shielding structure. The invention also discloses the glove box.
Description
Technical Field
The invention belongs to the field of radioactive nuclear fuel manufacturing, and particularly relates to a movable shielding body structure which is used for shielding protection in the processes of feeding of MOX (mixed oxide) fuel rods, manual bundling assembly, discharging of fuel rod bundles and the like, and dynamic shielding of radioactive materials is realized.
Background
In the field of nuclear fuel manufacturing, a shield and a glove box are generally integrated to perform overall protection in a situation where radioactive materials need to be manually operated inside the glove box. The addition of the thickness of the shielding shell easily leads to the increase of the thickness of the glove box, the manufacturing cost is high, meanwhile, an operator needs to carry lead-containing gloves (or tungsten-containing gloves and the like) to operate, the difficulty in material entering and exiting operation is high, and the short-distance observation cannot be carried out.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art, and provides a movable shield and a glove box, wherein the movable shield is used for solving the safety protection problem of radioactive material MOX fuel rods in the glove box during manual close-range bundling operation and during moving out of the glove box.
In order to solve the above technical problem, the present invention provides a movable shield, which includes: the fixed shielding structure comprises a shielding shell and a stainless steel frame, wherein the shielding shell and the stainless steel frame are connected through screws to form a stepped feeding channel and an inner cavity; a movable shielding structure coupled with the fixed shielding structure, the movable shielding structure being movable in an axial direction relative to the fixed shielding structure; and the driving mechanism is used for providing a driving force to drive the movement of the movable shielding structure.
According to the invention, the mobile shielding structure comprises a steel shell, a shielding plate and a guiding motion assembly arranged on the shielding plate, wherein the steel shell and the shielding plate are fixedly connected, and the guiding motion assembly is used for connecting the mobile shielding structure and the fixed shielding structure.
According to the invention, the guided movement assembly comprises a guide rail and a slide block, wherein the guide rail is fixed on the movable shielding structure through a screw, and the slide block is fixed on the fixed shielding structure through a screw.
According to the invention, there are two guide rails and four slide blocks, each guide rail cooperating with two slide blocks.
According to the invention, the drive mechanism comprises: a cylinder for providing a driving force; the push block is driven by the air cylinder to move forwards and backwards along the axial direction; the guide shaft is fixedly connected with the movable shielding structure and slidably connected with the push block, and the movable shielding structure is driven by the cylinder to move forwards and backwards along the axial direction; clutch module, including pendulum piece and separation piece, the pendulum piece is located the ejector pad with rotatable mode on, along with the ejector pad motion, the separation piece sets up the suitable position at the motion orbit of pendulum piece with fixed mode, wherein, be equipped with the recess on the guiding axle, the pendulum piece can block in the recess of guiding axle.
According to the invention, the separating block is used for separating the swinging block from the groove of the guide shaft, the separating block is arranged at a position corresponding to the position of the groove of the guide shaft when the guide shaft drives the movable shielding structure to move to the position which is maximally extended relative to the fixed shielding structure, after the swinging block is separated from the groove of the guide shaft, the guide shaft and the movable shielding structure stop moving, and the pushing block can further move along the axial direction in the positive direction under the driving of the air cylinder.
According to the invention, the drive mechanism further comprises: the guide sleeve is arranged on the push block, and the guide sleeve is sleeved in the guide sleeve to realize slidable connection with the push block; and the auxiliary supporting seat is fixedly arranged on the motion trail of the guide shaft and is used for carrying out auxiliary supporting on the guide shaft.
The invention has the beneficial technical effects that:
the movable shielding body can move along with materials to be shielded, dynamic shielding in a large range as far as possible is achieved, and meanwhile materials for manufacturing shielding shells can be effectively saved. The stepped channel formed by the fixed shielding structure can effectively reduce the radiation degree of the active region of the MOX fuel rod while ensuring the material to enter and exit. By arranging the movable shielding body, the follow-up protection of the active area of the operated MOX fuel bundle can be realized, and the protection safety of the fuel bundle when the fuel bundle is taken out of the box is ensured. The movable shielding structure can meet the requirements of close-range long-time observation and operation of operators, and has the advantages of ingenious structure, small occupied space, convenience in operation and the like.
The movable shielding body provided by the invention can be used for shielding the active area of the material in a targeted manner, so that the shielding and protection requirements of radioactive materials during feeding and discharging are met, and meanwhile, the manual close-range operation and observation are facilitated.
Drawings
FIG. 1 is a perspective view of a moving shield according to an embodiment of the present invention, showing a moving shield structure pushed out of a fixed shield structure;
FIG. 2 is a perspective view of a stationary shield structure of a portable shield according to an embodiment of the present invention;
FIG. 3 is a perspective view of a mobile shield structure of the mobile shield according to an embodiment of the present invention, showing the mobile shield structure in an initial position;
fig. 4 is a perspective view of a driving mechanism of a moving shield structure of a moving shield according to an embodiment of the present invention.
In the figure: 1-fixed shielding structure, 2-movable shielding structure, 3-shielding shell, 4-stainless steel frame, 5-steel shell, 6-shielding plate, 7-guiding motion component, 8-driving mechanism, 9-guide rail, 10-sliding block, 11-cylinder, 12-pushing block, 13-support, 14-guide shaft, 15-clutch component, 16-fuel rod bundle, 17-connecting plate, 18-L-shaped connecting plate, 19-swinging block, 20-pin shaft, 21-separating plate, 22-guide sleeve and 23-auxiliary support seat.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention is further described in detail below with reference to the accompanying drawings and examples.
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example 1
Fig. 1 is a perspective view of a movable shield according to an embodiment of the present invention, showing a state in which a movable shield structure is pushed out from a fixed shield structure. Fig. 2 is a perspective view of a fixed shielding structure of a mobile shield according to an embodiment of the present invention. Fig. 3 is a perspective view of a moving shield structure of a moving shield according to an embodiment of the present invention, showing a state in which the moving shield structure is in an initial position.
As shown in fig. 1, the movable shielding body in the present embodiment includes a fixed shielding structure 1, a movable shielding structure 2, and a driving mechanism 8. Wherein the moving shielding structure 2 is movable in one direction (hereinafter, referred to as axial direction, i.e., X direction in the drawing) with respect to the fixed shielding structure 1. The fixed shield structure 1 and the moving shield structure 2 will be described in detail below with reference to fig. 2 and 3, respectively.
As shown in fig. 2, a fixed shield structure 1 of a mobile shield according to an embodiment of the present invention is mainly formed of a shield case 3 and a stainless frame 4, and the shield case 3 and the stainless frame 4 are connected by screws to form a stepped feed passage and an inner cavity. The fixed shielding structure 1 of the movable shielding body according to the embodiment of the invention is used for shielding the active area of the MOX (mixed oxide) fuel rod during the feeding process, and due to the stepped feeding channel formed between the shielding shell 3 and the stainless steel frame 4, the radiation of the MOX fuel rod during the feeding process is prevented from directly reaching the outside of the fixed shielding structure 1, the scattering of the active area is well reduced, and the fixed shielding structure plays a good role in protecting the feeding operation of the MOX fuel rod.
As shown in fig. 3, the mobile shielding structure 2 includes a steel housing 5 and a shielding plate 6. The steel shell 5 and the shielding plate 6 are fixedly connected through screws. Also shown in fig. 3 is a drive mechanism 8, the drive mechanism 8 being used to drive the moving shielding structure 2 in axial movement and to push out the fuel bundle. The drive mechanism 8 of fig. 3 will be described in more detail below in connection with fig. 4.
Fig. 4 is a perspective view of a drive mechanism 8 of a moving shield according to an embodiment of the present invention.
The driving mechanism 8 comprises a cylinder 11, a push block 12, a support 13, a guide shaft 14 and a swing block 19. The push block 12 is used to push the fuel bundle 16 in the axial direction (X direction) to push the fuel bundle 16 out of the glove box. The pendulum block 19 is connected to the L-shaped link plate 18 by a pin 20 so as to be pivotable relative to the L-shaped link plate 18, the L-shaped link plate 18 being connected to the push block 12 by a screw, so that the pendulum block 19 moves together with the push block 12. The pendulum mass 19 and the release mass 21 together form the clutch pack 15, the release mass 21 being fixed in the axial direction. In the drive mechanism 8, a push block 12 is driven by a cylinder 11 to move in the axial direction (X direction in the drawing).
The driving mechanism 8 may further include a guide sleeve 22 and an auxiliary support seat 23, wherein the guide sleeve 22 is used for connecting with the guide shaft 14, and the guide shaft 14 can slide in the guide sleeve 22; the auxiliary support seat 23 is used to provide additional support for the guide shaft 14 to prevent the guide shaft 14 from bending and deforming.
The connection of the moving shield structure 2 to the fixed shield structure 1 and the connection of the moving shield structure 2 to the guide shaft 14 are explained as follows.
As shown in fig. 1 to 4, the moving shielding structure 2 is connected to the fixed shielding structure 1 by a guide movement assembly 7. The guided movement assembly 7 comprises a guide rail 9 and a slider 10. The guide rails 9 are fixed to the shield plates 6 of the mobile shield structure 2 by screws. The slider 10 is fixed to the fixed shielding structure 1 by screws. The relative movement in the axial direction between the fixed shielding structure 1 and the moving shielding structure 2 is achieved by the relative movement between the guide rails 9 of the guided movement assembly 7 and the sliders 10.
As shown in fig. 3, one end of the mobile shielding structure 2 is fixedly connected to the guide shaft 14 of the driving mechanism 8 via a connecting plate 17. The guide shaft 14 is driven by the cylinder 11, and the guide shaft 14 drives the movable shielding structure 2 to move together during the movement of the movable shielding structure 2 relative to the fixed shielding structure 1 in the axial direction. As shown in fig. 3, a groove is formed on the guide shaft 14. The recess is adapted to engage and disengage a wobble block 19 in the clutch pack 15. The pendulum mass 19 of the clutch assembly 15 can engage under gravity into a recess in the guide shaft 14.
The working flow of the mobile shield according to the embodiment of the present invention is described below with reference to fig. 1 to 4:
first, individual fuel rods are fed through a stepped feed channel formed between the shield case 3 and the stainless steel frame 4 and bundled into a fuel bundle 16 within the moving shield according to an embodiment of the present invention.
The cylinder 11 then needs to drive the fuel bundle 16 in an axial direction (X-direction) to push it out of the moving shield according to an embodiment of the present invention. In this process, the cylinder 11 drives the push block 12, the push block 12 pushes the fuel bundle 16 to move along the axial direction (X direction), and at the same time, the guide shaft 14 and the moving shielding structure 2 move together along the axial direction by the cooperation of the swing block 19 with the groove of the guide shaft 14 and the fixed connection of one end of the moving shielding structure 2 with the guide shaft 14 through the connecting plate 17, thereby realizing the axial extension of the moving shielding structure 2 relative to the fixed shielding structure 1, as shown in fig. 1. When the mobile shielding structure 2 is moved from the position shown in fig. 3 to the position shown in fig. 1, the pendulum mass 19 is moved to the position of the separating mass 21, at which point the pendulum mass 19 can be separated from the guide shaft 14 by means of the separating mass 21. Specifically, the disengagement block 21 lifts the swing block 19, thereby urging the swing block 19 out of the groove in the guide shaft 14. When the pendulum mass 19 disengages the groove on the guide shaft 14, the movement of the guide shaft 14 is stopped and the movement of the mobile shielding structure 2 is thus stopped. Subsequently, the cylinder 11 continues to drive the push block 12 and the fuel bundle 16 further axially until the fuel bundle 16 is pushed out of the glove box.
Finally, after the fuel bundle 16 is pushed out of the glove box, the cylinder 11 drives the push block 12 to move in reverse to the initial position shown in fig. 3, i.e., the return-to-zero position. In the process, the air cylinder 11 drives the push block 12 to move reversely (in the-X direction) together with the swing block 12 to pass through the position of the separation block 21 and then reach the groove of the guide shaft 14, and the swing block 12 is embedded into the groove of the guide shaft 14 under the action of gravity. At this time, the cylinder 11 continues to drive the push block 12, and the guide shaft 14 moves reversely (in the-X direction) together with the push block 12 by the insertion of the swing block 12, and at the same time, the movable shielding structure 2 also moves reversely by the driving of the guide shaft 14 until returning to the initial position shown in fig. 3, at which time, the movable shielding structure 2 retracts into the fixed shielding structure 1. Thereby entering the next duty cycle.
Example 2
The embodiment also discloses a glove box, including the box, still include foretell portable shielding body, portable shielding body locates in the box to be in the active area of material, be used for pushing out the glove box with the fuel rod, and shield the material simultaneously dynamically.
According to the invention, the movable shielding body can move along with the materials to be shielded, so that dynamic shielding in a large range as far as possible is realized, and meanwhile, the material for manufacturing the shielding shell can be effectively saved. The stepped channel formed by the fixed shielding structure can effectively reduce the radiation degree of the active region of the MOX fuel rod while ensuring the material to enter and exit. By arranging the movable shielding body, the follow-up protection of the active area of the operated MOX fuel bundle can be realized, and the protection safety of the fuel bundle when the fuel bundle is taken out of the box is ensured. The movable shielding structure can meet the requirements of close-range long-time observation and operation of operators, and has the advantages of ingenious structure, small occupied space, convenience in operation and the like.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (8)
1. A portable shield, comprising:
the fixed shielding structure comprises a shielding shell and a stainless steel frame, wherein the shielding shell and the stainless steel frame are connected through screws to form an inner cavity and a stepped feeding channel for fuel rods to enter and exit;
the movable shielding structure is combined with the inner cavity of the fixed shielding structure, and the movable shielding structure can move in the axial direction relative to the fixed shielding structure, so that the shielding range of the active region is expanded;
and the driving mechanism is used for providing driving force to push the fuel rod and drive the movement of the movable shielding structure.
2. The mobile shield of claim 1, wherein the mobile shield structure comprises a steel housing, a shield plate, and a guided motion assembly disposed on the shield plate,
the steel housing forms a fixed connection with the shield plate and the guided motion assembly connects the moving shield structure with the fixed shield structure and serves to guide the motion of the moving shield structure relative to the fixed shield structure.
3. The portable shielding body of claim 2, wherein the guided motion assembly comprises a guide rail and a slider, wherein the guide rail is fixed to the movable shielding structure and the slider is fixed to the fixed shielding structure.
4. The portable shielding of claim 3, wherein there are two rails and four slides, each rail mating with two slides.
5. The portable shield of claim 1, wherein the drive mechanism comprises:
a cylinder for providing a driving force;
the push block is driven by the air cylinder to move in the axial direction in the forward direction and the reverse direction and used for pushing the fuel rod;
the guide shaft is fixedly connected with the movable shielding structure and slidably connected with the push block, and the movable shielding structure is driven by the cylinder to move forwards and backwards along the axial direction;
the clutch component comprises a swinging block and a separating block, the swinging block is rotatably arranged on the pushing block and moves along with the pushing block, the separating block is fixedly arranged at a proper position of the movement track of the swinging block,
the guide shaft is provided with a groove, and the swinging block can be clamped into the groove of the guide shaft.
6. The movable type shielding body of claim 5, wherein the separation block is used for separating the swing block from the groove of the guide shaft, the separation block is disposed at a position corresponding to the groove of the guide shaft when the guide shaft drives the movable shielding structure to move to a position where the movable shielding structure is maximally extended relative to the fixed shielding structure, after the swing block is separated from the groove of the guide shaft, the guide shaft and the movable shielding structure stop moving, and the push block further moves in a forward direction along the axial direction under the driving of the cylinder.
7. The portable shield of claim 5, the drive mechanism further comprising:
the guide sleeve is arranged on the push block, and the guide sleeve is sleeved in the guide sleeve to realize slidable connection with the push block;
and the auxiliary supporting seat is fixedly arranged on the motion trail of the guide shaft and is used for carrying out auxiliary supporting on the guide shaft.
8. A glove box comprising a box body, characterized by further comprising a mobile shield according to any of claims 1 to 7,
the movable shielding body is arranged in the box body, is positioned in an active area of the material and is used for pushing the fuel rod out of the glove box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111590233.8A CN114334206A (en) | 2021-12-23 | 2021-12-23 | Movable shielding body and glove box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111590233.8A CN114334206A (en) | 2021-12-23 | 2021-12-23 | Movable shielding body and glove box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114334206A true CN114334206A (en) | 2022-04-12 |
Family
ID=81054615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111590233.8A Pending CN114334206A (en) | 2021-12-23 | 2021-12-23 | Movable shielding body and glove box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114334206A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010027260A1 (en) * | 2000-03-29 | 2001-10-04 | Minoru Uematsu | Synchronized moving radiation shield apparatus |
| JP2007071656A (en) * | 2005-09-06 | 2007-03-22 | Shimizu Corp | Conveying/stationing device shielding method in radioactive waste disposal facility and conveying/stationing device operating device |
| CN105453187A (en) * | 2013-05-23 | 2016-03-30 | 加拿大光源公司 | Production of molybdenum-99 using electron beams |
| CN108957063A (en) * | 2018-09-04 | 2018-12-07 | 广州市诚臻电子科技有限公司 | A kind of screened room of automation |
| GB202011410D0 (en) * | 2020-07-23 | 2020-09-09 | Rolls Royce Plc | Nuclear refuelling device |
-
2021
- 2021-12-23 CN CN202111590233.8A patent/CN114334206A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010027260A1 (en) * | 2000-03-29 | 2001-10-04 | Minoru Uematsu | Synchronized moving radiation shield apparatus |
| JP2007071656A (en) * | 2005-09-06 | 2007-03-22 | Shimizu Corp | Conveying/stationing device shielding method in radioactive waste disposal facility and conveying/stationing device operating device |
| CN105453187A (en) * | 2013-05-23 | 2016-03-30 | 加拿大光源公司 | Production of molybdenum-99 using electron beams |
| CN108957063A (en) * | 2018-09-04 | 2018-12-07 | 广州市诚臻电子科技有限公司 | A kind of screened room of automation |
| GB202011410D0 (en) * | 2020-07-23 | 2020-09-09 | Rolls Royce Plc | Nuclear refuelling device |
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