CN204460618U - Radioactivity factory building spiral duct - Google Patents
Radioactivity factory building spiral duct Download PDFInfo
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- CN204460618U CN204460618U CN201420784382.7U CN201420784382U CN204460618U CN 204460618 U CN204460618 U CN 204460618U CN 201420784382 U CN201420784382 U CN 201420784382U CN 204460618 U CN204460618 U CN 204460618U
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- spiral duct
- factory building
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- radioactivity
- barrier shield
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Abstract
The utility model provides a kind of radioactivity factory building spiral duct, and described spiral duct comprises outer tube and is arranged on the spiral duct body (1) in described outer tube, and described outer tube is applied in barrier shield (2); The two ends of described outer tube are equipped with flange with threaded hole, often hold described flange to be connected with the airduct of corresponding end.Spiral duct of the present utility model, has saved the arrangement space of ventilation shaft, has saved and make up shielding, and improves the convenience that ventilation shaft connects; Structure is simple, easy for installation, effectively can shield ray, and does not affect the supply and exhaust air current composition in room.
Description
Technical field
The utility model belongs to radioactivity power house ventilation field, is specifically related to radioactivity factory building spiral duct, and this spiral duct is applicable in the product of process or the material radioactivity factory building hot cell with γ or neutron irradiation or canyon seal box room.
Background technology
In the ventilating system of radioactivity factory building, the seal box such as hot cell and canyon room is as heat dissipation capacity and the higher room of radioactive level, the supply and exhaust pipe design in these rooms is extremely important, and this directly determines the employment security of the gentle staff of radioactive water of hot cell and canyon and adjacent room thereof.
In existing radioactivity power house ventilation pipe design, designer generally takes the form of pipe penetration, in concrete wall with elbow or add compensate shielding form to shield ray.Conventional way has:
Compensating shielding 4 is located at outside barrier shield 2 entirely, and airduct 3 runs through in barrier shield 2, and barrier shield 2 material is concrete or cast iron plate, corresponding compensation shielding material be iron or lead (see Fig. 4 a);
The straight airduct 3 of diagonal passes barrier shield 2, and compensate shielding 4 and be entirely located at outside barrier shield, barrier shield material is concrete or cast iron plate, and corresponding compensation shielding material is iron or lead (see Fig. 4 b);
Compensating shielding 4 is located at inside and outside barrier shield 2 respectively, and barrier shield 2 material is concrete, compensates shielding 4 material and can be iron or lead (see Fig. 4 c);
Fold-line-shaped airduct 3, the compensation shielding of its both sides 4 is embedded in barrier shield 2, and barrier shield 2 material is concrete, compensates shielding material and can be iron or lead (see Fig. 5 a);
The fold-line-shaped airduct 3 of bottom, seal box room, it compensates shielding 4 and is embedded in barrier shield 2 outside airduct, and barrier shield material is concrete, and compensating shielding material is iron or lead (see Fig. 5 b);
Fold-line-shaped airduct 3 forms the installation in place in barrier shield 2 again of a component with compensation shielding 4, and barrier shield material is concrete or cast iron plate, and corresponding compensation shielding material is iron or lead (see Fig. 5 c);
Above Normal practice carries out shielding protection in the mode of ray energy attenuation after repeatedly reflecting, although effect is better, but the elbow in concrete walls with compensate shield arrange extremely inconvenient, and this kind of method also can increase the retired demolition work difficulty of radioactivity factory building, because pipe built-in is in concrete wall, almost cannot remove pipeline when not destroying body of wall, shutoff can only be carried out to pipeline.
Utility model content
For the defect existed in prior art, the utility model provides a kind of radioactivity factory building spiral duct, has saved the arrangement space of ventilation shaft, has improve the convenience of the connection of ventilation shaft; Structure is simple, easy for installation.
For reaching above object, the technical solution adopted in the utility model is: provide a kind of radioactivity factory building spiral duct, and described spiral duct comprises outer tube and is arranged on the spiral duct body in described outer tube, and described outer tube is applied in barrier shield.
Further, the two ends of described outer tube are equipped with flange with threaded hole, and each described flange is connected with the airduct of its corresponding end.
Further, described spiral duct body adopts with described outer tube and sells or be threaded.
Further, on described spiral duct body, spirochetal head number is 3,4 or 5.
Further, the external diameter of described spiral duct body is 300mm, 500mm or 750mm.
Further, the pitch h1 on described spiral duct body is 600mm, 800mm or 1000mmm.
Further, on described spiral duct body, the thickness h 2 of thread axis is 60mm.
Further, described spiral duct body upper spindle diameter is 50mm, 80mm or 110mm.
Further, the minimum installation length of described spiral duct is 450mm, and maximum installation length is 2200mm.
Further, the wall thickness of described outer tube is 2mm or 3mm.
Advantageous Effects of the present utility model is: the utility model, by adopting spiral duct, not only effectively ensure that the alpha ray shield in room and the normal ventilation in room, also a saving the arrangement space of ventilation shaft, improves the convenience that ventilation shaft connects; Structure is simple, easy for installation; The utility model, owing to utilizing helicla flute as runner, ensure that the continuity that seal box room shields, and suitable to the seal box room barrier shield at gamma-emitting damping capacity and place; In addition, draft is also very little by the pressure drop produced during this spiral duct.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model spiral duct body;
Fig. 2 is the utility model spiral duct scheme of installation;
Fig. 3 is the structural representation that the length of the utility model spiral duct is greater than passed through barrier shield thickness;
Fig. 4 a-4c compensates the structural representation that shielding is arranged in the ventilation penetration outside barrier shield in prior art;
Fig. 5 a-5c compensates the structural representation that shielding is arranged in the ventilation penetration in barrier shield in prior art.
In figure:
1-spiral duct body 2-barrier shield 3-airduct 4-compensates shielding
11-conveyor screw 12-thread 13-axle
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in further detail.
As shown in Figure 1, 2, be the radioactivity factory building spiral duct that the utility model provides, this spiral duct comprises outer tube and is arranged on the spiral duct body 1 in outer tube, and outer tube is applied in barrier shield 2.
Wherein, the two ends of outer tube are equipped with flange with threaded hole, and each flange is connected with the airduct in the barrier shield 2 of its corresponding end; Spiral duct body adopts with outer tube to be sold or is threaded.
Spiral duct is in order to keep the protection level equal with seal box room barrier shield, and material (as the cast iron) density being used for manufacturing spiral duct should be not less than seal box room barrier shield material (if density is 2.2t/m
3normal concrete) 3 times.It is concrete seal box room that this kind of spiral duct is generally used for barrier shield material, and does not need to arrange compensation shielding.
In the following two cases, the barrier shield thickness of also tackling spiral duct thickeies, as shown in Figure 3;
Situation one: barrier shield thickness is less than the minimal design length of spiral duct requirement.
Situation two: the averag density of barrier shield material is greater than 2.2t/m
3, thus the minimum length of spiral duct is greater than barrier shield thickness.
The material of spiral duct:
Spiral duct can cylinder iron, the metal manufacture such as stainless steel or lead.If only consider, neutron shield manufactures spiral duct with regard to the plastics such as available polyethylene, polypropylene.
Spiral duct bulk material, when selecting, also needs to consider following factor, as mechanical performance, and machining property, homogenieity, attenuation.
Preferred Gray Cast HT200 (GB/T 9439-19880) manufactures spiral duct.
Outer tube and flange generally adopt carbon structural steels Q235A to manufacture.Should adopt austenitic stainless steel (ANSI304 series) when the γ radiation level of seal box indoor is higher, the selection of grade of steel should match with the corrosivity of overcurrent gas, or consistent with the selection of seal box indoor box body.
The dimensions of spiral duct:
Spiral duct has two kinds of length:
1) equal with seal box room, place barrier shield thickness, barrier shield material is concrete, Mi Du≤2.2t/m3, as shown in Figure 2.
2) when barrier shield material be loaded concrete or barrier shield descend thickness to be less than the minimum length of spiral duct most time, its length is greater than barrier shield thickness, as shown in Figure 3.
First on demand in following three kinds of conventional helical air channels, basic size is selected:
1) Φ 300, minimum length 450mm;
2) Φ 500, minimum length 600mm;
3) Φ 750, minimum length 800mm.
Finally select after considering following factor:
1) air quantity is required;
2) allowable pressure drop;
3) thickness of usable area and barrier shield;
4) inside and outside barrier shield, connect the free space of airduct.
Finally also need to carry out attenuation capacity calculation to spiral duct, ensure, with barrier shield, there is suitable ability.
Spiral duct standard size is in table 1:
The standard size of table 1 spiral duct:
The utility model is not limited to the above-mentioned specification that specifically provides and size, according to actual conditions with need to carry out adaptive adjustment and change.
In sum, the spiral duct that the utility model provides, not only ensure that the shield effectiveness of ray and the function of ventilating system, has saved the arrangement space of ventilation shaft, has improve the convenience of the connection of ventilation shaft.
Radioactivity factory building spiral duct of the present utility model is not limited to above-mentioned detailed description of the invention, and those skilled in the art draw other embodiment according to the technical solution of the utility model, belongs to technological innovation scope of the present utility model equally.
Claims (10)
1. a radioactivity factory building spiral duct, is characterized in that: described spiral duct comprises outer tube and is arranged on the spiral duct body (1) in described outer tube, and described outer tube is applied in barrier shield (2).
2. radioactivity factory building spiral duct as claimed in claim 1, it is characterized in that: the two ends of described outer tube are equipped with flange with threaded hole, each described flange is connected with the airduct of its corresponding end.
3. radioactivity factory building spiral duct as claimed in claim 2, is characterized in that: described spiral duct body (1) adopts with described outer tube sells or be threaded.
4. radioactivity factory building spiral duct as claimed in claim 3, is characterized in that: the head number of the upper conveyor screw (11) of described spiral duct body (1) is 3,4 or 5.
5. the radioactivity factory building spiral duct as described in any one of claim 1-4, is characterized in that: the external diameter of described spiral duct body (1) is 300mm, 500mm or 750mm.
6. radioactivity factory building spiral duct as claimed in claim 5, is characterized in that: the pitch h1 on described spiral duct body (1) is 600mm, 800mm or 1000mmm.
7. radioactivity factory building spiral duct as claimed in claim 6, is characterized in that: the thickness h 2 of upper thread (12) axis of described spiral duct body (1) is 60mm.
8. radioactivity factory building spiral duct as claimed in claim 7, is characterized in that: described spiral duct body (1) upper spindle (13) diameter is 50mm, 80mm or 110mm.
9. radioactivity factory building spiral duct as claimed in claim 8, it is characterized in that: the minimum installation length of described spiral duct is 450mm, maximum installation length is 2200mm.
10. radioactivity factory building spiral duct as claimed in claim 9, is characterized in that: the wall thickness of described outer tube is 2mm or 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420784382.7U CN204460618U (en) | 2014-12-11 | 2014-12-11 | Radioactivity factory building spiral duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420784382.7U CN204460618U (en) | 2014-12-11 | 2014-12-11 | Radioactivity factory building spiral duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204460618U true CN204460618U (en) | 2015-07-08 |
Family
ID=53667493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420784382.7U Active CN204460618U (en) | 2014-12-11 | 2014-12-11 | Radioactivity factory building spiral duct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204460618U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143915A (en) * | 2017-05-02 | 2017-09-08 | 青岛海尔空调器有限总公司 | Indoor apparatus of air conditioner and its air guide structure |
| CN107143991A (en) * | 2017-05-02 | 2017-09-08 | 青岛海尔空调器有限总公司 | Air conditioner air guide structure and air conditioner |
| CN112902349A (en) * | 2019-12-02 | 2021-06-04 | Lg电子株式会社 | Directional airflow device and air purifier with same |
-
2014
- 2014-12-11 CN CN201420784382.7U patent/CN204460618U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143915A (en) * | 2017-05-02 | 2017-09-08 | 青岛海尔空调器有限总公司 | Indoor apparatus of air conditioner and its air guide structure |
| CN107143991A (en) * | 2017-05-02 | 2017-09-08 | 青岛海尔空调器有限总公司 | Air conditioner air guide structure and air conditioner |
| CN112902349A (en) * | 2019-12-02 | 2021-06-04 | Lg电子株式会社 | Directional airflow device and air purifier with same |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |