CN107339425B - Double-ring sealing device for controlling cross contamination - Google Patents
Double-ring sealing device for controlling cross contamination Download PDFInfo
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- CN107339425B CN107339425B CN201710493665.4A CN201710493665A CN107339425B CN 107339425 B CN107339425 B CN 107339425B CN 201710493665 A CN201710493665 A CN 201710493665A CN 107339425 B CN107339425 B CN 107339425B
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- 238000007789 sealing Methods 0.000 title claims abstract description 123
- 238000012864 cross contamination Methods 0.000 title claims abstract description 29
- 238000012546 transfer Methods 0.000 claims abstract description 72
- 238000003825 pressing Methods 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 11
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 101100327917 Caenorhabditis elegans chup-1 gene Proteins 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000012857 radioactive material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
Abstract
The invention discloses a double-ring sealing device for controlling cross contamination, which comprises a flange component, a sealing cover component and an anti-falling component, wherein the flange component is arranged on the sealing cover component; the flange assembly comprises a connecting plate, an upper flange, a lower flange and a transfer channel; the connecting plate is arranged at a transfer interface between two adjacent box chambers, and the upper flange and the lower flange respectively extend into the two box chambers; the transfer channel penetrates through the connecting plate, the upper flange and the lower flange; the sealing cover assembly comprises a sealing cover and a grabbing device; after grabbing, the transferring container cover body and the sealing cover form a first closed space, and the outer surface of the transferring container cover body is positioned in the first closed space; the sealing cover is detachable and forms a second closed space with the upper flange; the main body of the transfer container is detachable and forms a third closed space with the lower flange; the anti-falling assembly prevents the sealing cover from being separated from the upper flange. The invention has the beneficial effects that: the atmosphere between the box bodies can not generate cross contamination in the transfer process, and the outer surface of the product cup is not polluted by the atmosphere of the box body on the inner side.
Description
Technical Field
The invention relates to a special sealing structure, in particular to a double-ring sealing device for controlling cross contamination, which is mainly used for strictly controlling the cross contamination of atmosphere between two adjacent closed box chambers and the contamination of the outer surface of a transfer container when materials are transferred between the two adjacent closed box chambers.
Background
In the field of nuclear chemical engineering, the production and processing of radioactive materials are generally carried out in a cell line consisting of a plurality of sealed hot cells, work cells, and glove boxes (collectively referred to as "sealed cells", simply referred to as "cells"). The transfer of material between compartments therefore requires transfer ports on each compartment to interface with the devices used to transfer the material (e.g., transfer containers, etc.). In order to prevent the leakage of harmful gas and aerosol during material transportation by utilizing a transportation container and the like between chambers and further pollute the environment and hurt human bodies, a special sealing device is needed to be used as a transportation interface to ensure the special sealing requirement of material transportation. This requires that the sealing device not only ensures that the material does not escape in the form of a gas stream to the outside during transport, but also ensures that any surfaces other than the interior surfaces of the chamber and the transport container which are in contact with the material are not contaminated by opening and closing the sealing lid (or door) during transport, i.e. that surfaces other than any sealing interface are not exposed to the atmosphere with the material. Such sealing techniques are "double cap seals". However, some prior art transfer containers do not allow for the disposal of a seal on the container body (e.g., 'product cups' for long-term storage). The prior art double-cap sealing technique (e.g., patent application No. 201210356649 entitled "a multi-point locking double-cap sealing device") has had to provide a seal on the transfer container and thus has not met the above-mentioned application requirements.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a double-ring sealing device for controlling cross contamination, so that the cross contamination of the atmosphere between boxes in the transferring process can be avoided, and the outer surface of a product cup (comprising a cup body and the outer wall of a cup cover) is not polluted by the atmosphere of the box body on the inner side.
In order to achieve the above object, the technical solution of the present invention is as follows:
a double-ring sealing device for controlling cross contamination comprises a flange component, a sealing cover component and an anti-falling component;
the flange assembly comprises a connecting plate, an upper flange, a lower flange and a transfer channel; the connecting plate is arranged at a transfer interface between two adjacent box chambers, and the upper flange and the lower flange are arranged on the connecting plate and respectively extend into two different box chambers; the transfer channel penetrates through the connecting plate, the upper flange and the lower flange;
the sealing cover assembly comprises a sealing cover for blocking the transfer channel and a gripping device for gripping the cover body of the transfer container; after the grabbing, the transferring container cover body and the sealing cover form a first closed space, and the outer surface of the transferring container cover body is positioned in the first closed space;
the sealing cover can be detached to form a second closed space with the upper flange; the main body of the transfer container can be detachably arranged to form a third closed space with the lower flange;
the anticreep subassembly set up in transport the kneck, can prevent sealed lid breaks away from with last flange.
Further, the above mentioned double-ring sealing device for controlling cross contamination, the gripping device comprises a handle, a gripping head and a gripping rod; the handle and the grabbing head are respectively arranged at two ends of the grabbing rod, and the grabbing rod penetrates through the sealing cover; the sealing cover is provided with a sliding sleeve, and the grabbing rod can move axially along the grabbing rod relative to the sealing cover so as to enable the grabbing head to move in the sliding sleeve; the handle and the gripping head are relatively fixed.
Furthermore, in the above-mentioned double-ring sealing device for controlling cross contamination, the gripper is provided with a locking hook, and the cover of the transfer container is provided with a cross bar which is matched with the locking hook so that the locking hook can hook or separate from the cross bar when the gripper rotates; or the grabbing head is provided with a cross bar, and the cover body of the transfer container is provided with a clamping cavity with an opening matched with the shape of the cross bar; the screens chamber space is greater than the crosspiece is so that when grabbing the head rotation the screens chamber blocks the crosspiece or the crosspiece can by screens chamber opening withdraws from the screens chamber.
Further, in the above double-ring sealing device for controlling cross contamination, a sliding sleeve sealing ring is arranged on a contact part of the sliding sleeve and the grab rod.
Furthermore, in the above double-ring sealing device for controlling cross contamination, a sealing groove for accommodating the lower sealing ring is arranged on the contact surface of the lower flange and the main body of the transfer container.
Further, the double-ring sealing device for controlling cross contamination is characterized in that the lower flange is provided with an internal thread, and the transfer container body is provided with an external thread matched with the internal thread.
Further, in the above double-ring sealing device for controlling cross contamination, an upper sealing ring is arranged between the upper flange and the sealing cover.
Furthermore, the anti-drop device of the double-ring sealing device for controlling cross contamination comprises a pressing block and a shaft; the shaft is fixed relative to the chamber; the pressing block is arranged on the shaft and can rotate around the shaft to move to the position above the sealing cover or move out of the position above the sealing cover.
Furthermore, in the double-ring sealing device for controlling cross contamination, a cup cover sealing ring is further arranged on the contact surface of the sealing cover and the transfer container cover body.
Further, in the double-ring sealing device for controlling cross contamination, the bottom surface of the sealing cover is provided with a dovetail groove, and the cup cover sealing ring is arranged in the dovetail groove.
The invention has the beneficial effects that:
1. set up the sealing member on transporting the interface between the box, realize that the atmosphere between the transfer process box can not produce cross contamination to the surface of product cup (including the outer wall of cup and bowl cover) is not infected with by the atmosphere of inboard box.
2. The structure is simple. Compared with the special-shaped sealing element in the double-cover sealing technology, the standard sealing element is used, redesign and verification processes are omitted, and the processing and manufacturing difficulty is reduced.
3. The operation is simple. After the product cup is in butt joint with the flange, the cup cover of the product cup is grabbed, and the sealing cover is opened, so that articles can be taken out; and after the article is put back, the operation is reversed.
Drawings
FIG. 1 is a schematic structural view of one embodiment of the cross-contamination control dual-ring seal of the present invention.
Fig. 2 is a schematic view showing a closed structure of the sealing cover of the embodiment shown in fig. 1.
Fig. 3 is a schematic view illustrating a structure in which the sealing cover of the embodiment shown in fig. 1 is opened.
Fig. 4 is a schematic structural view of a manner of engagement of a gripper head with a transfer container cover according to another embodiment of the present invention.
Fig. 5 is a schematic structural view of a connection mode of a lower flange and a main body of a transfer container in a third embodiment of the invention.
In the above drawings, 1, a transport container body; 2. a transfer container lid; 3. a lower seal ring; 4. a lower flange; 5. a cabinet partition; 6. a connecting plate; 7. an upper flange; 8. an upper sealing ring; 9. a cup cover sealing ring; 10. a sealing cover; 11. a handle; 12. a sliding sleeve sealing ring; 13. a sliding sleeve; 14. a head is grabbed; 15. a shaft; 16. and (7) briquetting.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
Example 1
As shown in fig. 1, 2 and 3, the present invention provides a double-ring sealing device for controlling cross contamination, which includes a flange assembly, a sealing cap assembly and a drop-off prevention assembly; the flange assembly comprises a connecting plate 6, an upper flange 7, a lower flange 4 and a transfer channel; the connecting plate 6 is arranged at a transfer interface between two adjacent box chambers, and the upper flange 7 and the lower flange 4 are arranged on the connecting plate 6 and respectively extend into two different box chambers; the transfer channel penetrates through the connecting plate 6, the upper flange 7 and the lower flange 4; the sealing cover assembly comprises a sealing cover 10 for blocking the transfer channel and a gripping device for gripping the transfer container cover body 2; after the grabbing, the transferring container cover body 2 and the sealing cover 10 form a first closed space, and the outer surface of the transferring container cover body 2 is positioned in the first closed space; the sealing cover 10 is detachably provided with the upper flange 7 to form a second closed space (a gas atmosphere space of the chamber a); the transfer container body 1 is detachably provided with a third closed space (a gas atmosphere space of the chamber B) formed by the lower flange 4; the anti-falling component is arranged at the transfer interface (arranged on the box chamber partition plate 5 between the box chamber A and the box chamber B in the embodiment), and can prevent the sealing cover 10 from being separated from the upper flange 7.
The specific operation method of the double-ring sealing structure of the embodiment is as follows:
1. in an initial state as shown in fig. 2, the sealing cap 10 is fastened to the upper flange 7 and pressed by the anti-slip assembly, and a side surface (cylindrical surface) of the sealing cap 10 forms a sealing interface with an inner surface of the upper flange 7.
2. The transfer container is controlled to ascend so that the transfer container body 1 is connected with the lower flange 4 (the transfer container in this embodiment is a product cup, and the ascending can be realized by a lifting platform arranged at the lower part of the product cup 1), and at this time, the inner surface of the lower flange 4 and the outer surface of the transfer container body 1 form a sealing interface.
3. The control anti-slip assembly releases its restriction of the sealing cap 10.
4. The transfer container lid 2 (in this embodiment, a product lid) is grasped by a grasping device, so that the transfer container lid 2 and the sealing cover 10 form a first closed space and the outer surface of the transfer container lid 2 is located in the first closed space.
5. The combination of the sealing cap 10 and the transfer container top 2 is removed (the removed configuration is shown in fig. 3) and material is taken out/put into the transfer container through the transfer passage.
6. And (3) putting back the combined body of the sealing cover 10 and the cup cover 2, so that the sealing cover 10 blocks the transfer channel again, and operating the anti-falling assembly to limit the sealing cover 10. At this time, the cylindrical surface of the sealing cap 10 forms a sealing interface with the inner surface of the upper flange 7.
7. After the container cover 2 to be transferred is combined with the transfer container body 1, the grabbing device is controlled to release the grabbing of the transfer container cover 2.
8. The transfer container body 1 is separated from the lower flange 4, so that the materials are transferred from the box chamber A to the box chamber B while the atmosphere of the box chamber A and the atmosphere of the box chamber B are prevented from being cross-polluted.
Before the transfer container is connected, a sealing cover 10 blocks the transfer passage; the upper flange 7 forms a sealing interface with the sealing lid 10, thus performing the function of atmospheric isolation between two adjacent compartments (A, B). After the transfer channel is opened, a sealing interface is formed between the lower flange 4 and the transfer container body 1, and the gas atmosphere of the box chamber A is communicated with the interior of the transfer container and isolated from the box chamber B. The outer surface of the transfer container top 2 (herein, the outer surface refers to the surface of the transfer container top 2 that is in contact with the gas atmosphere of the box chamber B) is located in the first closed space, thereby preventing the gas atmosphere in the box chamber a from contaminating the outer surface of the transfer container top 2. Thus, during material transfer, the gas atmospheres in chamber A, B are isolated from each other and do not contaminate each other.
The grasping apparatus in this embodiment includes a handle 11, a grasping head 14, and a grasping rod; the handle 11 and the grabbing head 14 are respectively arranged at two ends of the grabbing rod, and the grabbing rod penetrates through the sealing cover 10; the sealing cover 10 is provided with a sliding sleeve 13, and the grabbing rod can move axially along the grabbing rod relative to the sealing cover 10 so as to enable the grabbing head 14 to move in the sliding sleeve 13; the handle 11 and the gripper head 14 are relatively fixed. In this embodiment, the gripper 14 is provided with a locking hook, and the transfer container cover 2 is provided with a locking hook which is engaged with the cross rod to lock or disengage the cross rod when the gripper 14 rotates.
In order to ensure the sealing performance of each closed space, a sliding sleeve sealing ring 12 is arranged on the part of the sliding sleeve 13, which is in contact with the grabbing rod. And a sealing groove for accommodating the lower sealing ring 3 is arranged on the contact surface of the lower flange 4 and the transferring container body 1. An upper sealing ring 8 is arranged between the upper flange 7 and the sealing cover 10. And a cup cover sealing ring 9 is also arranged on the contact surface of the sealing cover 10 and the transferring container cover body 2. The bottom surface of the sealing cover 10 is provided with a dovetail groove, the cup cover sealing ring 9 is arranged in the dovetail groove, and therefore the cup cover sealing ring 9 is clamped through the dovetail groove to prevent the cup cover sealing ring 9 from falling.
The anti-falling device in the embodiment comprises a pressing block 16 and a shaft 15; the shaft 15 is fixed relative to the housing; the pressing block 16 is disposed on the shaft 15 and can rotate around the shaft 15 to move above the sealing cover 10 or move out of the sealing cover 10.
Example 2
The basic structure is the same as in example 1, with the difference that the gripper head 14 grips the transfer container top 2 in a different manner: as shown in fig. 5, a cross-piece is provided on the gripper head 14 and a locking cavity with an opening matching the shape of the cross-piece is provided on the transfer container lid 2; the screens chamber space is greater than crosspiece so that when grabbing head 14 rotatory the screens chamber blocks the crosspiece or the crosspiece can by screens chamber opening withdraws from the screens chamber.
Example 3
The basic structure is the same as that of example 1, except that the lower flange 4 is connected to the main body 1 of the transfer container in a different manner: as shown in fig. 4, the lower flange 4 is provided with an internal thread, and the transfer container body 1 is provided with an external thread matching the internal thread. The lower flange 4 and the transfer container body 1 are sealed by means of threaded connection. In addition, in this embodiment, the upper seal ring 8 and the lid seal ring 9 may also be an integrated special-shaped seal ring.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.
Claims (8)
1. A double-ring sealing device for controlling cross contamination is characterized in that: the anti-dropping flange assembly comprises a flange assembly, a sealing cover assembly and an anti-dropping assembly;
the flange assembly comprises a connecting plate (6), an upper flange (7), a lower flange (4) and a transfer channel; the connecting plate (6) is arranged at a transfer interface between two adjacent box chambers, and the upper flange (7) and the lower flange (4) are arranged on the connecting plate (6) and respectively extend into two different box chambers; the transfer channel penetrates through the connecting plate (6), the upper flange (7) and the lower flange (4);
the sealing cover assembly comprises a sealing cover (10) for blocking the transfer channel and a gripping device for gripping the transfer container cover body (2); after the grabbing, the transferring container cover body (2) and the sealing cover (10) form a first closed space, and the outer surface of the transferring container cover body (2) is positioned in the first closed space;
the sealing cover (10) can be detached to form a second closed space with the upper flange (7); a sealing groove for accommodating a lower sealing ring (3) is formed in the contact surface of the lower flange (4) and the transfer container body (1), and the transfer container body (1) can detachably form a third closed space with the lower flange (4);
the anti-falling assembly is arranged at the transfer interface and can prevent the sealing cover (10) from being separated from the upper flange (7);
the gripping device comprises a handle (11), a gripping head (14) and a gripping rod; a handle (11) and a grabbing head (14) are respectively arranged at two ends of the grabbing rod, and the grabbing rod penetrates through the sealing cover (10); a sliding sleeve (13) is arranged on the sealing cover (10), and the grabbing rod can move axially along the grabbing rod relative to the sealing cover (10) so as to enable the grabbing head (14) to move in the sliding sleeve (13); the handle (11) and the gripping head (14) are relatively fixed.
2. The double-ring seal for controlling cross-contamination of claim 1, wherein: a clamping hook is arranged on the gripper head (14), and a cross rod matched with the clamping hook is arranged on the transfer container cover body (2) so that the clamping hook can hook or separate from the cross rod when the gripper head (14) rotates; or a cross bar is arranged on the grabbing head (14), and a clamping cavity with an opening matched with the shape of the cross bar is arranged on the transferring container cover body (2); the screens chamber space is greater than the crosspiece so that when grabbing head (14) rotatory the screens chamber blocks the crosspiece or the crosspiece can by screens chamber opening withdraws from the screens chamber.
3. The double-ring seal for controlling cross-contamination of claim 1, wherein: a sliding sleeve sealing ring (12) is arranged on the part of the sliding sleeve (13) contacted with the grabbing rod.
4. The double-ring seal for controlling cross-contamination of claim 1, wherein: be provided with the internal thread on lower flange (4), be provided with on the transportation container main part (1) with internal thread complex external screw thread.
5. The double-ring seal for controlling cross-contamination of claim 1, wherein: an upper sealing ring (8) is arranged between the upper flange (7) and the sealing cover (10).
6. The double-ring seal for controlling cross-contamination of claim 1, wherein: the anti-falling component comprises a pressing block (16) and a shaft (15); the shaft (15) is fixed relative to the two chambers; the pressing block (16) is arranged on the shaft (15) and can rotate around the shaft (15) to move above the sealing cover (10) or move out of the sealing cover (10).
7. A double-ring seal for controlling cross-contamination according to any one of claims 1 to 6, wherein: the sealing cover (10) and the contact surface of the transferring container cover body (2) are also provided with a cup cover sealing ring (9).
8. The double-ring seal for controlling cross-contamination of claim 7, wherein: the bottom surface of the sealing cover (10) is provided with a dovetail groove, and the cup cover sealing ring (9) is arranged in the dovetail groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710493665.4A CN107339425B (en) | 2017-06-26 | 2017-06-26 | Double-ring sealing device for controlling cross contamination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710493665.4A CN107339425B (en) | 2017-06-26 | 2017-06-26 | Double-ring sealing device for controlling cross contamination |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107339425A CN107339425A (en) | 2017-11-10 |
| CN107339425B true CN107339425B (en) | 2021-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710493665.4A Active CN107339425B (en) | 2017-06-26 | 2017-06-26 | Double-ring sealing device for controlling cross contamination |
Country Status (1)
| Country | Link |
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| CN (1) | CN107339425B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110544545B (en) * | 2018-09-20 | 2021-01-05 | 原子高科股份有限公司 | Sealed transferring method for radioactive substance |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4972652A (en) * | 1988-02-26 | 1990-11-27 | British Nuclear Fuels Plc | Closures for containers |
| GB2218663B (en) * | 1987-12-22 | 1991-05-15 | Atomic Energy Authority Uk | Lid system. |
| CN202134219U (en) * | 2011-06-20 | 2012-02-01 | 中国核电工程有限公司 | Handheld protective transferring container |
| CN104485145A (en) * | 2014-10-29 | 2015-04-01 | 中国核电工程有限公司 | Gravity type double-cover sealing device |
| CN107743738B (en) * | 2012-10-26 | 2015-12-23 | 中国核电工程有限公司 | It is a kind of manually operated double-canopy |
| CN205172372U (en) * | 2015-10-27 | 2016-04-20 | 西安西航集团航空航天地面设备有限公司 | Shielding sealing door |
| CN106742899A (en) * | 2016-11-21 | 2017-05-31 | 中国核电工程有限公司 | A kind of double-canopy sealing transporter |
-
2017
- 2017-06-26 CN CN201710493665.4A patent/CN107339425B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2218663B (en) * | 1987-12-22 | 1991-05-15 | Atomic Energy Authority Uk | Lid system. |
| US4972652A (en) * | 1988-02-26 | 1990-11-27 | British Nuclear Fuels Plc | Closures for containers |
| CN202134219U (en) * | 2011-06-20 | 2012-02-01 | 中国核电工程有限公司 | Handheld protective transferring container |
| CN107743738B (en) * | 2012-10-26 | 2015-12-23 | 中国核电工程有限公司 | It is a kind of manually operated double-canopy |
| CN104485145A (en) * | 2014-10-29 | 2015-04-01 | 中国核电工程有限公司 | Gravity type double-cover sealing device |
| CN205172372U (en) * | 2015-10-27 | 2016-04-20 | 西安西航集团航空航天地面设备有限公司 | Shielding sealing door |
| CN106742899A (en) * | 2016-11-21 | 2017-05-31 | 中国核电工程有限公司 | A kind of double-canopy sealing transporter |
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| CN107339425A (en) | 2017-11-10 |
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