CN205122206U - Rotatable apron - Google Patents
Rotatable apron Download PDFInfo
- Publication number
- CN205122206U CN205122206U CN201520812751.3U CN201520812751U CN205122206U CN 205122206 U CN205122206 U CN 205122206U CN 201520812751 U CN201520812751 U CN 201520812751U CN 205122206 U CN205122206 U CN 205122206U
- Authority
- CN
- China
- Prior art keywords
- cover plate
- upper cover
- aperture
- apron
- lower cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Filtering Of Dispersed Particles In Gases (AREA)
- Sampling And Sample Adjustment (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The utility model belongs to the technical field of the useless filter of nuclear power station is changed and is transported, a rotatable apron is disclosed. This apron including the upper cover plate of disc with lap two -layer structure down, the upper cover plate lies in down apron top and upper cover plate and laps the center and be equipped with the through -hole that runs through with lower, be provided with a second aperture that corresponds with this aperture on being provided with the first aperture of one or more, upper cover plate around wherein lapping down, the shape and the diameter homogeneous of first aperture and second aperture are sent, down the apron all around on be provided with the stop device more than the two, the diameter of upper cover plate is lighter than down the apron and lies in the stop device, still be provided with down the steel ball gyro wheel on the apron, the upper cover plate moves lapping to rotate upward down through this steel ball gyro wheel. The utility model provides a rotatable apron has convenient to use, the effectual beneficial effect of radiation -blocking.
Description
Technical field
The utility model belongs to nuclear power station and to give up filter replacement and transhipment technical field, is specifically related to a kind of rotatable cover plate.
Background technology
In every platform unit of nuclear power station, several radioactive water filtrator is all installed, in the ground steel case that the position of water filter generally locates below ground level, the chief component of filtrator comprises ground hatch deck, container upper cover, filter element retainer and filter core etc. according to sequence of positions from top to bottom, and wherein ground hatch deck is concordant with ground.According to nuclear power station regulation, filter element reaches all to be needed when differential pressure reaches setting value to change certain service time, and it is temporary just to need loading cask flask to be transported to refuse temporary library when useless filter element contact agent dose rate is greater than 2mSv/h.
At present, change useless filtrator, adopt gripping tool ground hatch deck, container upper cover, filter element retainer and filter core to be taken out according to sequencing and be transferred to correct position and process.But, environment and personnel can discharge certain radioactivity towards periphery at the radiomaterial opening hatch deck after-filter inside, ground, be unfavorable for handling safety.China Atomic Energy Science Research Institute has applied for the patent of " a kind of radiation shielded device " by name, including a drawer-like barricade in device disclosed in this patent, when not needing gripping tool to operate, its closedown effectively can be reduced the radiation shielded device of dosage suffered by surrounding environment and personnel.But utilize gripping tool to each parts of filtrator carry out grasping manipulation open barricade time, still have certain radiomaterial and leak.The utility model proposes a kind of rotatable cover plate that significantly can reduce radioactive dosage.
Utility model content
(1) utility model object
Problem existing for prior art, the utility model provide one can effectively reduce nuclear power station to give up in filter replacement and transport process discharge radioactive rotatable cover plate.
(2) technical scheme
In order to solve the problem existing for prior art, the utility model is achieved through the following technical solutions:
A kind of rotatable cover plate, this cover plate comprises discoidal upper cover plate and lower cover double-layer structure, and upper cover plate is positioned at above lower cover and upper cover plate and lower cover center are provided with the through hole run through; Wherein the surrounding of lower cover is provided with and one or more first aperture, upper cover plate is provided with a second orifice corresponding with this aperture, and the first aperture is all consistent with diameter with the shape of second orifice; The surrounding of lower cover is provided with plural stop means, and the diameter of upper cover plate is less than lower cover and is positioned at this stop means; Lower cover is also provided with steel ball roller, and upper cover plate is rotated on lower cover by this steel ball roller.
Preferably, the quantity of described first aperture, position are corresponding with the quantity and position nuclear power station filter container covering fixed screw.
Preferably, upper cover plate and lower cover are provided with lifting lifting ear.
Preferably, the material of upper cover plate and lower cover is stainless steel or lead.
(3) beneficial effect
The rotatable cover plate that the utility model provides comprises upper and lower two-layer cover plate, and this cover plate has easy to use, that radioactive shield is effective beneficial effect.Specific operation process and beneficial effect are: change and transhipment nuclear power station give up filtrator as container upper cover time, first the radiation shielded device of drawer-like is placed on above container upper cover, then rotatable cover plate is placed on above radiation shielded device, container upper cover lifting tool to be inserted in upper cover plate and the through hole of lower cover and to be connected with container upper cover, then the upper cover bolt disassembly instrument corresponding with container upper cover fixed screw is utilized to insert in the second orifice of upper cover plate, rotary upper cover plate utilizes upper cover bolt disassembly instrument to be unclamped by the fixed screw on container upper cover after making second orifice corresponding with each first aperture respectively, so that container upper cover is transferred to correct position by container upper cover lifting tool together with rotatable cover plate.
Accompanying drawing explanation
Fig. 1 is lower cover structural representation; Wherein 1 is the first aperture; 3 is steel ball rollers; 4 is stop means; 5 is lifting lifting ears, and 6 is through holes;
Fig. 2 is upper cover plate structural representation; Wherein 2 is second orifices, and 6 is through holes;
Fig. 3 is upper cover plate, lower cover coordinates schematic diagram.
Embodiment
Below in conjunction with specification drawings and specific embodiments, the application is further elaborated.
Embodiment 1
A kind of rotatable cover plate, this cover plate comprises discoidal upper cover plate and lower cover double-layer structure, and upper cover plate is positioned at above lower cover and upper cover plate and lower cover center are provided with the through hole 6 run through; As shown in Figure 1, wherein the surrounding of lower cover is provided with that eight the first apertures 1, upper cover plate to be provided with second orifice 2, first aperture 1 corresponding with this aperture all consistent with diameter with the shape of second orifice 2 to lower cover schematic diagram; The surrounding of lower cover is provided with eight stop means 4, the diameter of upper cover plate is less than lower cover and is positioned at this stop means 4; Lower cover is also provided with steel ball roller 3, and upper cover plate is rotated on lower cover by this steel ball roller 3.Upper cover plate and lower cover are provided with lifting lifting ear 5, and the material of upper cover plate and lower cover is stainless steel.
Wherein the quantity of the first aperture 1, position are corresponding with the quantity and position nuclear power station filter container covering fixed screw.
Specific operation process is: change and transhipment nuclear power station give up filtrator as container upper cover time, first the radiation shielded device of drawer-like is placed on above container upper cover, then rotatable cover plate is placed on above radiation shielded device, container upper cover lifting tool to be inserted in upper cover plate and the through hole of lower cover and to be connected with container upper cover, then the upper cover bolt disassembly instrument corresponding with container upper cover fixed screw is utilized to insert in the second orifice of upper cover plate, rotary upper cover plate utilizes upper cover bolt disassembly instrument to be unclamped by the fixed screw on container upper cover after making second orifice corresponding with each first aperture respectively, so that container upper cover is transferred to correct position by container upper cover lifting tool together with rotatable cover plate.
Embodiment 2
As different from Example 1, the material of upper cover plate and lower cover is plumbous.
Claims (4)
1. a rotatable cover plate, this cover plate comprises discoidal upper cover plate and lower cover double-layer structure, and upper cover plate is positioned at above lower cover and upper cover plate and lower cover center are provided with the through hole run through; Wherein the surrounding of lower cover is provided with and one or more first aperture, upper cover plate is provided with a second orifice corresponding with this aperture, and the first aperture is all consistent with diameter with the shape of second orifice; The surrounding of lower cover is provided with plural stop means, and the diameter of upper cover plate is less than lower cover and is positioned at this stop means; Lower cover is also provided with steel ball roller, and upper cover plate is rotated on lower cover by this steel ball roller.
2. the rotatable cover plate of one according to claim 1, is characterized in that, quantity, the position of described first aperture are corresponding with the quantity and position nuclear power station filter container covering fixed screw.
3. the rotatable cover plate of one according to claim 1, is characterized in that, upper cover plate and lower cover are provided with lifting lifting ear.
4. the rotatable cover plate of one according to claim 1, is characterized in that, the material of upper cover plate and lower cover is stainless steel or lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520812751.3U CN205122206U (en) | 2015-10-20 | 2015-10-20 | Rotatable apron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520812751.3U CN205122206U (en) | 2015-10-20 | 2015-10-20 | Rotatable apron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205122206U true CN205122206U (en) | 2016-03-30 |
Family
ID=55577792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520812751.3U Active CN205122206U (en) | 2015-10-20 | 2015-10-20 | Rotatable apron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205122206U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107219083A (en) * | 2017-05-23 | 2017-09-29 | 大连洁能重工股份有限公司 | Useless filter element replacing transhipment principle prototype experimental rig |
| CN108831577A (en) * | 2018-05-17 | 2018-11-16 | 中国核电工程有限公司 | A kind of automation of transfer container opens, closes and locking mechanism |
-
2015
- 2015-10-20 CN CN201520812751.3U patent/CN205122206U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107219083A (en) * | 2017-05-23 | 2017-09-29 | 大连洁能重工股份有限公司 | Useless filter element replacing transhipment principle prototype experimental rig |
| CN107219083B (en) * | 2017-05-23 | 2019-04-26 | 大连洁能重工股份有限公司 | Useless filter element replacing transports principle prototype experimental rig |
| CN108831577A (en) * | 2018-05-17 | 2018-11-16 | 中国核电工程有限公司 | A kind of automation of transfer container opens, closes and locking mechanism |
| CN108831577B (en) * | 2018-05-17 | 2021-07-20 | 中国核电工程有限公司 | Automatic opening, closing and locking mechanism for transfer container |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |