CN206471124U - A kind of Low background ring shielding device - Google Patents
A kind of Low background ring shielding device Download PDFInfo
- Publication number
- CN206471124U CN206471124U CN201720116005.XU CN201720116005U CN206471124U CN 206471124 U CN206471124 U CN 206471124U CN 201720116005 U CN201720116005 U CN 201720116005U CN 206471124 U CN206471124 U CN 206471124U
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- Prior art keywords
- screened room
- ring
- low background
- shielding device
- layer
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Abstract
The utility model discloses a kind of Low background ring shielding device, including screened room, screened room bottom is provided with base, and screened room top, which is provided with lid, screened room, is provided with closed shielding cavity；Shading ring is provided with described shielding cavity, shading ring may be provided in the annular groove on the inside of screened room, fixed lobe is provided with annular groove, fixed lobe is six, is evenly distributed in annular groove, screened room is hierarchy, is divided into internal layer, outer layer and intermediate layer.By setting annular groove, lead ring is reinforced, prevents from coming off.
Description
Technical field
The utility model is related to Radiation monitoring field, is exactly a kind of Low background ring shielding device.
Background technology
Radiation control manages department and radiation environment and radiation protection detection is carried out in fields such as geology, environment and biomedicines
When, it is necessary to which the instrument that can be met based on measurement low energy beta activity nucleic measures, at present, light detection device and light shield point
Not Cai Yong aluminum light room be made with easy gobo, without outside lead screen device, it has the disadvantage：Due to apparatus structure excessively
Simply, operation is complex, is suitable only for the person skilled operation of the device.
Utility model content
The technical problems to be solved in the utility model is that lead ring formed by integrally casting does not allow easy cleaning in screened room, and split is set
Easily come off, fixed structure is set, reinforce lead ring, prevent from coming off.
In order to solve the above technical problems, the utility model uses following technological means：
A kind of Low background ring shielding device, including screened room, screened room bottom are provided with base, and screened room top is provided with lid
Closed shielding cavity is provided with body, screened room；Shading ring is provided with described shielding cavity, shading ring may be provided at shielding
In the annular groove of indoor, fixed lobe is provided with annular groove, fixed lobe is six, is evenly distributed in annular groove, is shielded
Room is hierarchy, is divided into internal layer, outer layer and intermediate layer.
Preferably, the utility model further technical scheme is：
The intermediate layer of described screened room is Low background lead layer, and thickness is 10 centimetres.
Described lid side, which is provided with above depression bar, lid, is provided with draw ring.
Provided with two annular grooves in described screened room.
The internal layer of described screened room is oxygen-free copper layer, and thickness is 3 millimeters.
The outer layer of described screened room is low carbon steel layer, and thickness is 1 centimetre.
Described shading ring is lead ring.
Described annular groove diameter is slightly larger than the diameter of lead ring.
Low background lead one-piece casting can be used in the utility model, from new lead to the old lead multiple choices of more than 50 years Low backgrounds,
Correspondence different demands.New lead passes through electrorefining, free from foreign meter；Old lead passes through the storage time of Pb-210 at least two half-life period.
Shielding cavity is poured using professional one-shot forming, it is to avoid foam inside, it is ensured that even density, unshielded weak spot, with pure
Degree is high, the low feature of background.By setting annular groove, lead ring is reinforced, prevents from coming off.
Brief description of the drawings
Fig. 1 is a kind of structural representation of embodiment of the present utility model.
Fig. 2 is the structural representation of annular groove of the present utility model.
Fig. 3 is the structural representation of shading ring of the present utility model.
Fig. 4 is the structural representation of another embodiment of the present utility model.
Description of reference numerals：1- bases；2- screened rooms；3- draw rings；4- lids；5- depression bars；6- annular grooves；7-
Fixed lobe；8- shading rings.
Embodiment
With reference to embodiment, the utility model is further illustrated.
It can be seen from Fig. 1, Fig. 2, Fig. 3, Fig. 4, a kind of Low background ring shielding device of the utility model, by screened room 2, screen
The bottom of room 2 is covered provided with base 1, and the top of screened room 2, which is provided with lid 4, screened room 2, is provided with closed shielding cavity；Described
Shield cavity interior provided with shading ring 8, shading ring 8 may be provided in the annular groove 6 of the inner side of screened room 2, provided with fixation in annular groove 6
Projection 7, fixed lobe 7 be six, be evenly distributed in annular groove 6, screened room 2 be hierarchy, be divided into internal layer, outer layer and in
Interbed, the intermediate layer of described screened room 2 is Low background lead layer, and thickness is 10 centimetres, and the side of lid 4 is provided with depression bar 5, lid 4
Top is provided with draw ring 3, screened room 2 provided with two annular grooves 6, and the internal layer of screened room 2 is oxygen-free copper layer, and thickness is 3 millimeters, screen
The outer layer for covering room 2 is low carbon steel layer, and thickness is 1 centimetre, and shading ring 8 is lead ring, and the diameter of annular groove 6 is slightly larger than the diameter of lead ring.
Due to the foregoing is only embodiment of the present utility model, but protection not limited to this of the present utility model,
Any those skilled in the art it is contemplated that the equivalent change of the technical program technical characteristic or replacement, all cover
Within protection domain of the present utility model.
Claims (8)
1. a kind of Low background ring shielding device, including screened room, screened room bottom are provided with base, screened room top is provided with lid
Closed shielding cavity is provided with body, screened room；It is characterized in that：Shading ring, shading ring are provided with described shielding cavity
It may be provided in the annular groove on the inside of screened room, fixed lobe be provided with annular groove, fixed lobe is six, is evenly distributed on ring
In shape groove, screened room is hierarchy, is divided into internal layer, outer layer and intermediate layer.
2. a kind of Low background ring shielding device according to claim 1, it is characterised in that：The centre of described screened room
Layer is Low background lead layer, and thickness is 10 centimetres.
3. a kind of Low background ring shielding device according to claim 1, it is characterised in that：Described lid side is provided with
Draw ring is provided with above depression bar, lid.
4. a kind of Low background ring shielding device according to claim 1, it is characterised in that：It is provided with described screened room
Two annular grooves.
5. a kind of Low background ring shielding device according to claim 1, it is characterised in that：The internal layer of described screened room
For oxygen-free copper layer, thickness is 3 millimeters.
6. a kind of Low background ring shielding device according to claim 1, it is characterised in that：The outer layer of described screened room
For low carbon steel layer, thickness is 1 centimetre.
7. a kind of Low background ring shielding device according to claim 1, it is characterised in that：Described shading ring is lead
Ring.
8. a kind of Low background ring shielding device according to claim 1, it is characterised in that：Described annular groove diameter is omited
More than the diameter of lead ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720116005.XU CN206471124U (en) | 2017-02-08 | 2017-02-08 | A kind of Low background ring shielding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720116005.XU CN206471124U (en) | 2017-02-08 | 2017-02-08 | A kind of Low background ring shielding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206471124U true CN206471124U (en) | 2017-09-05 |
Family
ID=59703327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720116005.XU Active CN206471124U (en) | 2017-02-08 | 2017-02-08 | A kind of Low background ring shielding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206471124U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752753A (en) * | 2019-03-14 | 2019-05-14 | 山东海强环保科技有限公司 | A kind of combined shielding equipment |
-
2017
- 2017-02-08 CN CN201720116005.XU patent/CN206471124U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752753A (en) * | 2019-03-14 | 2019-05-14 | 山东海强环保科技有限公司 | A kind of combined shielding equipment |
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