CN109256229B - Double-cover sealing transfer equipment - Google Patents
Double-cover sealing transfer equipment Download PDFInfo
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- CN109256229B CN109256229B CN201811099235.5A CN201811099235A CN109256229B CN 109256229 B CN109256229 B CN 109256229B CN 201811099235 A CN201811099235 A CN 201811099235A CN 109256229 B CN109256229 B CN 109256229B
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- barrel cover
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- 238000007789 sealing Methods 0.000 title claims abstract description 61
- 230000007246 mechanism Effects 0.000 claims abstract description 40
- 210000001503 joint Anatomy 0.000 claims abstract description 20
- 239000003638 chemical reducing agent Substances 0.000 claims description 8
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- 230000008602 contraction Effects 0.000 claims description 2
- 230000003028 elevating effect Effects 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 14
- 230000001360 synchronised effect Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 2
- 239000000443 aerosol Substances 0.000 description 12
- 230000002285 radioactive effect Effects 0.000 description 12
- 230000006872 improvement Effects 0.000 description 8
- 230000033001 locomotion Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000012857 radioactive material Substances 0.000 description 5
- 239000000941 radioactive substance Substances 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F5/00—Transportable or portable shielded containers
- G21F5/06—Details of, or accessories to, the containers
- G21F5/12—Closures for containers; Sealing arrangements
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F5/00—Transportable or portable shielded containers
- G21F5/06—Details of, or accessories to, the containers
- G21F5/14—Devices for handling containers or shipping-casks, e.g. transporting devices loading and unloading, filling of containers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Pressure Vessels And Lids Thereof (AREA)
- Handcart (AREA)
Abstract
The invention relates to double-cover sealing transfer equipment, and belongs to the technical field of sealing devices. The double-cover sealing transfer equipment comprises a shielding barrel, a shielding barrel cover, an airtight transfer barrel and an airtight transfer barrel cover, and further comprises a shielding container transfer trolley, a shielding container lifting mechanism and a butt joint shielding cabin. The airtight transfer barrel cover and the shielding barrel cover are combined together through a locking/unlocking mechanism to finish synchronous opening, closing, separating and other actions, and the airtight material transferring operation system is realized through the actions. After the two layers of covers are combined into a whole, the two layers of covers can be synchronously opened, and the two independent sealing systems are combined into a unified sealing system, so that the outside of the system is not polluted. When the double-layer cover complex is restored to be buckled, the double-layer cover complex can be unlocked again to form two independent sealing covers, and the original unified sealing system is divided into two independent and separable sealing systems. The invention not only can solve the air tightness problem in the transfer operation, but also can ensure the personal safety of operators to the maximum extent.
Description
Technical Field
The invention relates to double-cover sealing transfer equipment, and belongs to the technical field of sealing devices.
Background
Currently, airtight transfer casks and outer shielding casks are used to transfer radioactive material between non-adjacent shielding isolators, which need to be done in a dedicated shielding isolator when doing this. The operation flow is as follows: and lifting the transfer barrel from the transfer trolley to the primary-secondary trolley, conveying the airtight transfer barrel and the shielding barrel into the isolator by the primary-secondary trolley, closing the airtight door of the isolator, opening the two layers of tank covers by using a special tool, and taking out radioactive substances in the tank. The process of loading the radioactive material is reversed from that described above. During the operation of taking out or loading volatile radioactive materials, the shielding isolator is filled with radioactive aerosol, the outer surface of the shielding transportation container is inevitably polluted, and when the shielding transportation container leaves the isolator for transportation, the radioactive aerosol attached to the surface of the shielding transportation container can cause a certain degree of pollution to the passing area.
Disclosure of Invention
The invention aims to: aiming at the technical problems in the prior art, the invention aims to provide the double-cover sealing transfer equipment which not only can solve the air tightness problem in transfer operation, but also can ensure the personal safety of operators to the maximum extent.
The technical scheme is as follows: in order to achieve the above object, the present invention adopts the following technical scheme:
the double-cover sealed transfer equipment comprises a shielding barrel cover, an airtight transfer barrel cover, a shielding container transfer trolley and a shielding container lifting mechanism, and also comprises an opposite-interface shielding cabin;
the shielding barrel cover is provided with a shielding barrel cover locking ring, and a shielding barrel cover lock catch is fixedly arranged on the shielding barrel cover locking ring;
a barrel chamber locking block is arranged at the upper end of the shielding barrel;
the locking ring of the shielding barrel cover is rotated to enable the locking buckle of the shielding barrel cover to be matched with the locking block of the barrel chamber so as to lock and unlock the shielding barrel cover and the shielding barrel;
a barrel cover locking pin is arranged at the lower end of the shielding barrel cover;
a barrel cover locking pin sheave is fixed at the upper part of the airtight transfer barrel cover, and a clamping groove is formed in the barrel cover locking pin sheave; the locking/unlocking of the airtight transfer barrel cover and the shielding barrel cover is realized by matching the barrel cover locking pin with the barrel cover locking pin grooved pulley clamping groove;
when the airtight transfer barrel cover and the shielding barrel cover are unlocked, the shielding barrel cover and the shielding barrel are locked, and the airtight transfer barrel cover and the airtight transfer barrel are buckled; when the airtight transfer bucket cover and the shielding bucket cover are locked, the shielding bucket cover and the shielding bucket are unlocked, and the airtight transfer bucket cover and the shielding bucket cover are synchronously opened and closed;
the components of the shielding container transfer trolley comprise a trolley body bracket, wheels, a handle and a bearing bracket; the shielding container transfer trolley comprises a trolley body support, a shielding container transfer trolley, a shielding container, a sliding block mechanism, a rotating shaft and a control device, wherein a handle is arranged on the trolley body support;
the gravity center of the shielding container is positioned in the connecting line of the three wheels, so that the stability of the transfer trolley in the running process is ensured. And a positioning guide device is arranged on the lower cross beam of the transfer trolley, so that the transfer trolley is ensured to be positioned at the bottom of the shielding isolator smoothly and accurately, and the subsequent butt joint operation of the shielding container and the shielding isolator is conveniently carried out.
The vertical column of the lifting mechanism of the shielding container is fixed on the base, the vertical linear guide rail and the lifting screw rod are respectively fixed on two sides of the vertical column, the main lifting arm is in sliding connection with the linear guide rail through the sliding block, the lifting screw rod penetrates through a screw rod nut fixed on a support at one end of the main lifting arm, and the stepping motor and the planetary gear reducer fixed on the vertical column are combined to drive the main lifting arm to move on the linear guide rail through the lifting screw rod; the other end of the main lifting arm is provided with a shielding container secondary lifting mechanism, a screw rod shaft of the secondary lifting mechanism is arranged on the main lifting arm through a screw rod bearing, a stepping motor of the secondary lifting mechanism and a planetary gear reducer are combined to drive the screw rod shaft to rotate, a screw rod nut is arranged on the screw rod shaft, the upper end and the lower end of a shielding container lifting rod are fixedly connected with an airtight transfer barrel positioning tray and the screw rod nut respectively, a positioning bracket is arranged on the main lifting arm, and the shielding container lifting rod passes through a limiting hole of the positioning bracket fixed on the main lifting arm;
the shielding container lifting mechanism is positioned outside the shielding isolator, irradiation dose is weak, electric equipment cannot be influenced, and stable and continuous power is required for lifting action, so that the power for the secondary lifting action is provided by the stepping motor matched with the planetary gear reducer. In order to ensure that the shielding outer barrel and the airtight transfer barrel can be accurately in butt joint with corresponding mechanisms, linear guide rails are arranged on upright posts of the lifting mechanism, and the axial positioning accuracy is +/-0.02 mm. The guide rail combined with the sliding block not only ensures that the shielding container keeps the accuracy of a moving track in vertical movement, but also counteracts component force which acts on the guide rail and is not in the vertical direction. Therefore, the transmission efficiency of the lifting system is improved, the abrasion of the lifting screw rod is reduced, and the service life of the lifting system is prolonged.
The lower part of the supporting frame of the interface shielding cabin is provided with a transport vehicle positioning guide mechanism, the outer shielding box is fixed on the upper part of the supporting frame, and the box chamber shielding cover drives the cylinder to drive the box chamber shielding cover to horizontally move on the linear guide rail so as to realize the opening and closing of the outer shielding box; the airtight transfer bucket positioned on the transfer trolley of the shielding container is lifted by the lifting mechanism of the shielding container, the butt joint of the airtight transfer bucket and the outer shielding box is completed, a clamping groove on the transfer bucket cover is meshed with a clamping block on the shielding cover of the box chamber during butt joint, and meanwhile, the limit lock pin of the transfer bucket cover is automatically unlocked, and the transfer bucket cover is horizontally opened or buckled under the drive of the shielding cover of the box chamber; when the transfer barrel is out of butt joint, the limiting lock pin automatically resets, and the transfer barrel cover is locked with the airtight transfer barrel cover.
The advantage of this is that the interface shield compartment is used to ensure the integrity of the radiation shield when radioactive material is transferred between the shield isolator and the transfer cask, preventing operator exposure to the external radiation dose field. After the shielding transfer barrel is lifted by the lifting device, the upper part of the shielding transfer barrel is inserted into the shielding cabin, and the barrel cover and the shielding cover of the box chamber are synchronously opened and closed. At this time, the outer shielding box and the shielding transfer barrel form a complete shielding body together, so that gamma rays are effectively shielded.
As a further improvement, a locking cover/unlocking driving cylinder is arranged on the shielding barrel cover, and the rotation of the shielding barrel cover locking ring and the expansion and contraction of the barrel cover locking pin are synchronously driven by the locking cover/unlocking driving cylinder.
The locking and unlocking actions of the transfer barrel cover and the barrel chamber sealing cover and the locking and unlocking actions of the barrel chamber sealing cover and the shielding barrel are driven by a single linear cylinder, so that the driving mechanism is ensured to be simplified most, and the two actions are ensured to be completely synchronous. When the barrel chamber sealing cover is locked with the shielding barrel, the barrel chamber sealing cover is unlocked with the transfer barrel cover, and the transfer barrel can be separated from butt joint; on the contrary, when the barrel chamber sealing cover and the shielding barrel are unlocked, the barrel chamber sealing cover and the transferring barrel cover are locked, and at the moment, the two layers of sealing covers can be synchronously opened to start material transferring operation.
The locking cover and unlocking driving cylinder can be a double-acting cylinder with the model of festo DSNU-12-10-P-A linear motion, the air supply pressure is 6bar, the theoretical acting force is 51N, and the stroke is 10mm. The linear motion output by the cylinder has double functions, and drives the locking ring of the sealing cover of the barrel chamber to rotate, so that the locking and unlocking functions of the sealing cover and the shielding barrel are realized; the locking pin is driven to stretch out and draw back so as to lock and unlock the box sealing cover and the transfer barrel cover.
A sealing ring is arranged between the shielding barrel cover and the airtight transfer barrel cover, and when the shielding barrel cover and the airtight transfer barrel cover are locked, the outer surfaces of the shielding barrel cover and the airtight transfer barrel cover are tightly combined together through the sealing ring to form a double-cover complex.
The sealing ring has the advantages that the sealing ring is used for realizing air tightness between the barrel chamber sealing cover and the transfer barrel cover, so that the radioactive aerosol can not permeate into a gap between two layers of cover bodies to pollute the outer surface. When the double covers are opened together, the outer surfaces of the two layers of cover bodies are tightly combined together and sealed by the barrel chamber sealing cover and the transfer barrel cover sealing ring, so that the outer surfaces of the double covers are not polluted even if the double covers are exposed to radioactive aerosol. After the double-cap composite is separated, the "inner surface" of the composite becomes the outer surface of the independent system, which is not contaminated, in a "clean" state. When the double covers are closed, all surfaces contaminated by radioactive aerosol are closed by the system, and the surfaces are not exposed, so that pollution caused by secondary volatilization is avoided.
As a further improvement, the shielding barrel cover is also provided with a manual cover opening handle for controlling the opening and closing of the shielding barrel cover.
As a further improvement, a barrel chamber sealing cover mandrel is fixedly arranged in the middle of the shielding barrel cover.
As a further improvement, the body frame of the shielding container transfer vehicle is made of aluminum alloy sections.
The advantage is that the main body part is made of aluminum alloy section bar to reduce the weight of the car body.
The double-cover sealing device is a system in which an airtight transfer barrel cover and a shielding barrel cover are combined together through a locking/unlocking mechanism to finish synchronous opening, closing, separating and other actions, and the airtight ground material transferring operation is performed through the actions. After the two layers of covers are combined into a whole, the two layers of covers can be synchronously opened, and the two independent sealing systems are combined into a unified sealing system, so that the outside of the system is not polluted. When the double-layer cover complex is restored to be buckled, the double-layer cover complex can be unlocked again to form two independent sealing covers, and the original unified sealing system is divided into two independent and separable sealing systems. The double covers refer to the transfer barrel cover and the barrel chamber sealing cover.
Compared with the prior art, the double-cover sealing transfer equipment has the beneficial effects that:
(1) The device is suitable for storing and transporting volatile radioactive substances, the whole transportation operation process keeps an airtight state, radioactive aerosol is prevented from leaking to a personnel operation area, and the risk of radioactive aerosol pollution is obviously reduced;
(2) The degree of automation is high. The automatic executing elements are all pneumatic elements, and the operation flows of butt joint/separation of double covers, container opening, cover buckling and the like are automatically completed, so that the reliability of the equipment is improved, and the failure rate of the equipment is reduced;
(3) Meanwhile, the working intensity of operators is reduced, and the use efficiency of equipment is improved;
(4) By using the double-cover locking device, the volatile radioactive substance can be directly transported between different isolators by combining other mechanisms of the sealed transport system without passing through an ear box or an air lock;
(5) Not only can solve the air tightness problem in the transfer operation, but also can ensure the personal safety of operators to the maximum extent.
Drawings
FIG. 1 is a schematic view of a dual lid sealed transfer device of the present invention;
FIG. 2 is a schematic view of a dual cap seal locking mechanism of the present invention;
FIG. 3 is a schematic view of a shielded container transfer cart of the present invention;
FIG. 4 is a schematic view of a shielded container lifting mechanism of the present invention;
fig. 5 is a schematic view of the docking pod of the present invention.
In the figure: 1. locking/unlocking driving cylinder; 2. a shielding barrel cover mandrel; 3. a locking ring of the shielding barrel cover; 31. locking the shielding barrel cover; 4. a barrel cover locking pin grooved pulley; 5. a barrel chamber locking block; 6. a barrel cover locking pin; 7. a manual uncapping handle; 8. a shielding barrel cover; seventhly, shielding the cabin at the butt joint port; a shielding barrel; 11. a shielded container transfer cart; 12. a shielding container lifting mechanism; 13. a vehicle body bracket; 14. a handle; 15. a shielding container; 16. a load bearing bracket; 17. a wheel; 18. a column; 19, lifting the screw rod; fifthly, positioning a tray of the airtight transfer barrel; a main lifting arm; 22, a stepping motor; 23, shielding a container lifting rod; 24. a linear guide rail; 25, a base; 26. a box chamber shielding cover displacement driving cylinder; 27, a box shielding cover; 28, an outer shielding box; 29. a support frame; 30, a positioning and guiding mechanism of the transport vehicle.
Detailed Description
The invention will be further illustrated by the following description of specific examples, which are given in connection with the accompanying drawings and are to be construed as illustrative only and not limiting the scope of the invention.
As shown in fig. 1 to 5, the double-cover sealed transfer device of the present invention includes a shielding barrel 10, a shielding barrel cover 8, an airtight transfer barrel cover, a shielding container transfer trolley 11, and a shielding container lifting mechanism 12, and is characterized in that: the double-cover sealed transfer equipment also comprises an interface shielding cabin 9;
the shielding barrel cover is provided with a shielding barrel cover locking ring 3, and a shielding barrel cover lock catch 31 is fixedly arranged on the shielding barrel cover locking ring 3;
the upper end of the shielding barrel is provided with a barrel chamber locking block 5;
the shielding barrel cover locking ring 3 is rotated to enable the shielding barrel cover lock catch 31 to be matched with the barrel chamber locking block 5 so as to lock and unlock the shielding barrel cover 8 and the shielding barrel;
the lower end of the shielding barrel cover is provided with a barrel cover locking pin 6;
a barrel cover locking pin sheave 4 is fixed at the upper part of the airtight transfer barrel cover, and a clamping groove is formed in the barrel cover locking pin sheave 4; the locking/unlocking of the airtight transfer barrel cover and the shielding barrel cover is realized by matching the barrel cover locking pin 6 with the clamping groove of the barrel cover locking pin grooved wheel 4;
when the airtight transfer bucket cover and the shielding bucket cover 8 are unlocked, the shielding bucket cover and the shielding bucket are locked, and the airtight transfer bucket cover and the airtight transfer bucket are buckled; when the airtight transfer bucket cover and the shielding bucket cover are locked, the shielding bucket cover and the shielding bucket are unlocked, and the airtight transfer bucket cover and the shielding bucket cover are synchronously opened and closed;
the components of the shielded container transfer cart 11 comprise a cart body bracket 13, wheels 17, a handle 14 and a bearing bracket 16; the handle 14 is arranged on the car body bracket 13, the wheels 17 are arranged on the lower cross beam at the bottom of the car body bracket 14, the rear wheels of the shielding container transfer car are steering wheels with brake devices, the upper part of the car body bracket 13 is a bearing bracket 16, and the shielding container 15 realizes the transverse, longitudinal and vertical movement on the bearing bracket 16 and the rotation in the horizontal plane and the rotation in the vertical plane through the guide rail, the sliding block mechanism and the rotating shaft on the bearing bracket;
the gravity center of the shielding container is positioned in the connecting line of the three wheels, so that the stability of the transfer trolley in the running process is ensured. And a positioning guide device is arranged on the lower cross beam of the transfer trolley, so that the transfer trolley is ensured to be positioned at the bottom of the shielding isolator smoothly and accurately, and the subsequent butt joint operation of the shielding container and the shielding isolator is conveniently carried out.
The upright 18 of the shielding container lifting mechanism 12 is fixed on a base 25, a vertical linear guide rail 24 and a lifting screw rod 19 are respectively fixed on two sides of the upright 18, a main lifting arm 21 is in sliding connection with the linear guide rail 24 through a sliding block, the lifting screw rod 19 penetrates through a screw rod nut fixed on a bracket at one end of the main lifting arm 21, and a stepping motor 22 fixed on the upright and a planetary gear reducer are combined to drive the main lifting arm 21 to move on the linear guide rail 24 through the lifting screw rod; a shielding container secondary lifting mechanism is arranged at the other end of the main lifting arm 21, a screw rod shaft of the secondary lifting mechanism is arranged on the main lifting arm 21 through a screw rod bearing, a stepping motor of the secondary lifting mechanism and a planetary gear reducer are combined to drive the screw rod shaft to rotate, a screw rod nut is arranged on the screw rod shaft, the upper end and the lower end of a shielding container lifting rod 23 are respectively fixedly connected with an airtight transfer container positioning tray 20 and the screw rod nut, a positioning bracket is arranged on the main lifting arm 21, and the shielding container lifting rod 23 penetrates through a limiting hole of the positioning bracket fixed on the main lifting arm 21;
the shielding container lifting mechanism is positioned outside the shielding isolator, irradiation dose is weak, electric equipment cannot be influenced, and stable and continuous power is required for lifting action, so that the power for the secondary lifting action is provided by the stepping motor matched with the planetary gear reducer. In order to ensure that the shielding outer barrel and the airtight transfer barrel can be accurately in butt joint with corresponding mechanisms, linear guide rails are arranged on upright posts of the lifting mechanism, and the axial positioning accuracy is +/-0.02 mm. The guide rail combined with the sliding block not only ensures that the shielding container keeps the accuracy of a moving track in vertical movement, but also counteracts component force which acts on the guide rail and is not in the vertical direction. Therefore, the transmission efficiency of the lifting system is improved, the abrasion of the lifting screw rod is reduced, and the service life of the lifting system is prolonged.
The lower part of a supporting frame 29 of the interface shielding cabin 9 is provided with a transport vehicle positioning and guiding mechanism 30, an outer shielding box 28 is fixed on the upper part of the supporting frame 29, and a box shielding cover driving cylinder 26 drives a box shielding cover to horizontally move on a linear guide rail so as to realize the opening and closing of the outer shielding box 28; the airtight transfer bucket positioned on the transfer trolley 11 of the shielding container is lifted by the lifting mechanism of the shielding container, the butt joint of the airtight transfer bucket and the outer shielding box 28 is completed, a clamping groove on the transfer bucket cover is meshed with a clamping block on the shielding cover 27 of the box chamber during butt joint, and meanwhile, the limiting lock pin of the transfer bucket cover is automatically unlocked, and the transfer bucket cover is horizontally opened or buckled under the drive of the shielding cover of the box chamber; when the transfer barrel is out of butt joint, the limiting lock pin automatically resets, and the transfer barrel cover is locked with the airtight transfer barrel cover.
The advantage of this is that the interface shield compartment is used to ensure the integrity of the radiation shield when radioactive material is transferred between the shield isolator and the transfer cask, preventing operator exposure to the external radiation dose field. After the shielding transfer barrel is lifted by the lifting device, the upper part of the shielding transfer barrel is inserted into the shielding cabin, and the barrel cover and the shielding cover of the box chamber are synchronously opened and closed. At this time, the outer shielding box and the shielding transfer barrel form a complete shielding body together, so that gamma rays are effectively shielded.
As a further improvement, the shielding barrel cover is provided with a locking cover/unlocking driving cylinder 1, and the rotation of the shielding barrel cover locking ring 3 and the extension and retraction of the barrel cover locking pin 6 are synchronously driven by the locking cover/unlocking driving cylinder 1.
The locking and unlocking actions of the transfer barrel cover and the barrel chamber sealing cover and the locking and unlocking actions of the barrel chamber sealing cover and the shielding barrel are driven by a single linear cylinder, so that the driving mechanism is ensured to be simplified most, and the two actions are ensured to be completely synchronous. When the barrel chamber sealing cover is locked with the shielding barrel, the barrel chamber sealing cover is unlocked with the transfer barrel cover, and the transfer barrel can be separated from butt joint; on the contrary, when the barrel chamber sealing cover and the shielding barrel are unlocked, the barrel chamber sealing cover and the transferring barrel cover are locked, and at the moment, the two layers of sealing covers can be synchronously opened to start material transferring operation.
The locking cover and unlocking driving cylinder can be a double-acting cylinder with the model of festo DSNU-12-10-P-A linear motion, the air supply pressure is 6bar, the theoretical acting force is 51N, and the stroke is 10mm. The linear motion output by the cylinder has double functions, and drives the locking ring of the sealing cover of the barrel chamber to rotate, so that the locking and unlocking functions of the sealing cover and the shielding barrel are realized; the locking pin is driven to stretch out and draw back so as to lock and unlock the box sealing cover and the transfer barrel cover.
As a further improvement, a sealing ring is arranged between the shielding barrel cover 8 and the airtight transfer barrel cover, and when the shielding barrel cover and the airtight transfer barrel cover are locked, the outer surfaces of the shielding barrel cover 8 and the airtight transfer barrel cover are tightly combined together through the sealing ring to form a double-cover complex.
The sealing ring has the advantages that the sealing ring is used for realizing air tightness between the barrel chamber sealing cover and the transfer barrel cover, so that the radioactive aerosol can not permeate into a gap between two layers of cover bodies to pollute the outer surface. When the double covers are opened together, the outer surfaces of the two layers of cover bodies are tightly combined together and sealed by the barrel chamber sealing cover and the transfer barrel cover sealing ring, so that the outer surfaces of the double covers are not polluted even if the double covers are exposed to radioactive aerosol. After the double-cap composite is separated, the "inner surface" of the composite becomes the outer surface of the independent system, which is not contaminated, in a "clean" state. When the double covers are closed, all surfaces contaminated by radioactive aerosol are closed by the system, and the surfaces are not exposed, so that pollution caused by secondary volatilization is avoided.
As a further improvement, the shielding barrel cover 8 is also provided with a manual cover opening handle 7 for controlling the opening and closing of the shielding barrel cover.
As a further improvement, a barrel chamber sealing cover mandrel 2 is fixedly arranged in the middle of the shielding barrel cover 8.
As a further development, the body frame 13 of the shielding container transfer vehicle 11 is made of aluminum alloy profiles.
The advantage is that the main body part is made of aluminum alloy section bar to reduce the weight of the car body.
Compared with the prior art, the double-cover sealing transfer equipment has the beneficial effects that: the device is suitable for storing and transporting volatile radioactive substances, the whole transportation operation process keeps an airtight state, radioactive aerosol is prevented from leaking to a personnel operation area, and the risk of radioactive aerosol pollution is obviously reduced; the degree of automation is high. The automatic executing elements are all pneumatic elements, and the operation flows of butt joint/separation of double covers, container opening, cover buckling and the like are automatically completed, so that the reliability of the equipment is improved, and the failure rate of the equipment is reduced; meanwhile, the working intensity of operators is reduced, and the use efficiency of equipment is improved; by using the double-cover locking device disclosed by the invention, the volatile radioactive substances can be directly transported between different isolators by combining other mechanisms of the sealed transport system without passing through an ear box or an air lock.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (6)
1. The utility model provides a sealed transfer equipment of double cover, sealed transfer equipment of double cover includes shielding bucket (10) shielding bung (8), airtight transport bucket, airtight transport bung, shielding container transfer car (11), shielding container elevating system (12), its characterized in that: the double-cover sealed transfer equipment also comprises a butt joint shielding cabin (9);
the shielding barrel cover is provided with a shielding barrel cover locking ring (3), and a shielding barrel cover lock catch (31) is fixedly arranged on the shielding barrel cover locking ring (3);
a barrel chamber locking block (5) is arranged at the upper end of the shielding barrel;
the shielding barrel cover locking ring (3) is rotated to enable the shielding barrel cover lock catch (31) to be matched with the barrel chamber locking block (5) so as to lock and unlock the shielding barrel cover (8) and the shielding barrel;
a barrel cover locking pin (6) is arranged at the lower end of the shielding barrel cover;
a barrel cover locking pin sheave (4) is fixed at the upper part of the airtight transfer barrel cover, and a clamping groove is formed in the barrel cover locking pin sheave (4); the locking/unlocking of the airtight transfer barrel cover and the shielding barrel cover is realized by matching the barrel cover locking pin (6) with the clamping groove of the barrel cover locking pin grooved wheel (4);
when the airtight transfer barrel cover and the shielding barrel cover (8) are unlocked, the shielding barrel cover and the shielding barrel are locked, and the airtight transfer barrel cover and the airtight transfer barrel are buckled; when the airtight transfer bucket cover and the shielding bucket cover are locked, the shielding bucket cover and the shielding bucket are unlocked, and the airtight transfer bucket cover and the shielding bucket cover are synchronously opened and closed;
the components of the shielding container transfer trolley (11) comprise a trolley body bracket (13), wheels (17), a handle (14) and a bearing bracket (16); the shielding container transfer trolley is characterized in that a handle (14) is arranged on the trolley body support (13), wheels (17) are arranged on a lower cross beam at the bottom of the trolley body support (13), steering wheels with brake devices are arranged at rear wheels of the shielding container transfer trolley, a bearing support (16) is arranged at the upper part of the trolley body support (13), and the shielding container (15) moves transversely, longitudinally and vertically on the bearing support (16) and rotates in the horizontal plane and rotates in the vertical plane through a guide rail, a sliding block mechanism and a rotating shaft on the bearing support;
the vertical column (18) of the shielding container lifting mechanism (12) is fixed on the base (25), the vertical linear guide rail (24) and the lifting screw rod (19) are respectively fixed on two sides of the vertical column (18), the main lifting arm (21) is in sliding connection with the linear guide rail (24) through a sliding block, the lifting screw rod (19) penetrates through a screw rod nut fixed on a bracket at one end of the main lifting arm (21), and the stepping motor (22) fixed on the vertical column and the planetary gear reducer are combined to drive the main lifting arm (21) to move on the linear guide rail (24) through the lifting screw rod; the other end of the main lifting arm (21) is provided with a shielding container secondary lifting mechanism, a screw rod shaft of the secondary lifting mechanism is arranged on the main lifting arm (21) through a screw rod bearing, a stepping motor of the secondary lifting mechanism and a planetary gear reducer are combined to drive the screw rod shaft to rotate, a screw rod nut is arranged on the screw rod shaft, the upper end and the lower end of a shielding container lifting rod (23) are respectively fixedly connected with an airtight transfer barrel positioning tray (20) and the screw rod nut, a positioning bracket is arranged on the main lifting arm (21), and the shielding container lifting rod (23) penetrates through a limiting hole of the positioning bracket fixed on the main lifting arm (21);
the lower part of a supporting frame (29) of the interface shielding cabin (9) is provided with a transport vehicle positioning guide mechanism (30), an outer shielding box (28) is fixed on the upper part of the supporting frame (29), and a box chamber shielding cover driving cylinder (26) drives a box chamber shielding cover to horizontally move on a linear guide rail so as to realize the opening and closing of the outer shielding box (28); the airtight transfer barrel positioned on the transfer trolley (11) of the shielding container is lifted by the lifting mechanism of the shielding container, the butt joint of the airtight transfer barrel and the outer shielding box (28) is completed, when the airtight transfer barrel is in butt joint, the clamping groove on the transfer barrel cover is meshed with the clamping block on the shielding cover (27) of the box chamber, meanwhile, the limiting lock pin of the transfer barrel cover is automatically unlocked, and the transfer barrel cover is horizontally opened or buckled under the drive of the shielding cover of the box chamber; when the transfer barrel is out of butt joint, the limiting lock pin automatically resets, and the transfer barrel cover is locked with the airtight transfer barrel cover.
2. A double-lid sealed transfer device according to claim 1, wherein: the shielding barrel cover is provided with a locking cover/unlocking driving cylinder (1), and rotation of the shielding barrel cover locking ring (3) and expansion and contraction of the barrel cover locking pin (6) are synchronously driven by the locking cover/unlocking driving cylinder (1).
3. A double-lid sealed transfer device according to claim 1, wherein: a sealing ring is arranged between the shielding barrel cover (8) and the airtight transfer barrel cover, and when the shielding barrel cover and the airtight transfer barrel cover are locked, the outer surfaces of the shielding barrel cover (8) and the airtight transfer barrel cover are tightly combined together through the sealing ring to form a double-cover complex.
4. A double-lid sealed transfer device according to claim 1, wherein: the shielding barrel cover (8) is also provided with a manual cover opening handle (7) for controlling the opening and closing of the shielding barrel cover.
5. A double-lid sealed transfer device according to claim 1, wherein: the middle part of the shielding barrel cover (8) is fixedly provided with a barrel chamber sealing cover mandrel (2).
6. A double-lid sealed transfer device according to claim 1, wherein: the body support (13) of the shielding container transfer vehicle (11) is made of aluminum alloy profiles.
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| CN201811099235.5A CN109256229B (en) | 2018-09-20 | 2018-09-20 | Double-cover sealing transfer equipment |
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| CN201811099235.5A CN109256229B (en) | 2018-09-20 | 2018-09-20 | Double-cover sealing transfer equipment |
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| CN109256229B true CN109256229B (en) | 2023-10-31 |
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| CN114684556B (en) * | 2022-03-02 | 2024-05-31 | 中国核电工程有限公司 | Vertical sealing transfer device |
| CN116798672B (en) * | 2023-08-29 | 2023-11-17 | 湖南千智机器人科技发展有限公司 | Radiation article shielding transfer system |
| CN117698814B (en) * | 2024-02-06 | 2024-04-19 | 成都德力斯实业有限公司 | Automatic butt joint transfer trolley with shielding and sealing functions |
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