CN203520888U - Shielding device of high-radioactivity component of nuclear power station - Google Patents
Shielding device of high-radioactivity component of nuclear power station Download PDFInfo
- Publication number
- CN203520888U CN203520888U CN201320522861.7U CN201320522861U CN203520888U CN 203520888 U CN203520888 U CN 203520888U CN 201320522861 U CN201320522861 U CN 201320522861U CN 203520888 U CN203520888 U CN 203520888U
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- shield
- power station
- nuclear power
- high radioactivity
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model relates to a shielding device of a high-radioactivity component of a nuclear power station, which is used for shielding a high-radioactivity valve of a nuclear power station. The shielding device comprises a first shielding body and a second shielding body covering each other, wherein the first shielding body and the second shielding body are provided with a first half cavity and a second half cavity together forming an inner cavity for containing the high-radioactivity valve when the first shielding body and the second shielding body cover each other. In the shielding device of a high-radioactivity component of a nuclear power station, when the first shielding body and the second shielding body cover each other, the high-radioactivity valve can be contained in the inner cavity together formed by the first shielding body and the second shielding body covering each other so as to realize a good shielding effect. By adopting the shielding device to shield the high-radioactivity valve of the nuclear power station, the shielding device has the advantages of small volume, small space occupation and convenience in assembly and disassembly and the like and can be applied to a high-radioactivity valve needing long-time shielding or with a small mounting space and can be used for conveniently overhauling the high-radioactivity valve.
Description
Technical field
The utility model relates to the high radioactivity shield technology field of nuclear power station, is specially the shield assembly of nuclear power station high radioactivity parts.
Background technology
Nuclear power station is to utilize nuclear fission principle to produce the system of electric energy, and it is a calorie source, is again a radioactive radiation source that intensity is high.Fission reaction has produced a large amount of artificial radioisotopes, and the product after these radioactive isotope decays often also has radioactivity, only has through a series of decay and just can become stable isotope.
People find in long-term practice and application, and a small amount of radioactive ray irradiates the not health of entail dangers to human body, and excessive radioactive ray irradiates to be known from experience and produce injury people, makes people pathogenic, carcinogenic, lethal.The exposure time is longer, and the radiation dose being subject to is just larger, endangers also larger.Therefore, human body should be avoided in radiation dose large place life, operation.
And intensity can weaken during the radioactive ray penetrating material that radiation source radiates, certain thickness screen mass-energy weakens the intensity of ray.Therefore, enough thick screen (shielding material) is set between radiation source and human body, just can reduces radiation level, make the suffered dosage of human body lower than personaldoselimit, thereby guarantee personal safety.Therefore, the main points of shielding protection are between radiographic source and human body, to place a kind of shielding material that can effectively absorb ray.
For the shielding of the high radioactivity valve place hot spots such as nuclear power station PTR601 602VB, the scheme that prior art provides is that the surrounding at valve builds framing scaffold, then at framing scaffold, hangs sheet lead and shields.This shielding mode, on the one hand because needs build framing scaffold and hang sheet lead at framing scaffold, so workload is large, complicated, resource consumption is large, efficiency is low; On the other hand, this shielding mode is that the surrounding at valve hangs sheet lead, thus can only play shielding action to the surrounding of valve, and protective effect is provided can not to the staff that equipment is overhauled, shield effectiveness has significant limitation.
Relevant explanation:
Personaldoselimit (Individual dose limits): be that radiation protection authoritative department (as the ICRP of ICRP, state supremacy power department) (refers to the vocational activity relevant with radiation to definite putting into practice, as nuclear industry) and often with lasting irradiation (as the public relevant with source be subject to according to) dosage level of foundation, higher than the irradiation of this level, to individual consequence, be regarded as unacceptable.
Utility model content
The purpose of this utility model is to overcome above-mentioned technical matters, and a kind of shield assembly of nuclear power station high radioactivity parts is provided.
The utility model is by the following technical solutions:
A shield assembly for nuclear power station high radioactivity parts, for the shielding of nuclear power station high radioactivity valve, comprises the first shield and the secondary shielding body that mutually cover; Described the first shield and secondary shielding body have respectively the first half chambeies and the second half chambeies of when described the first shield and described secondary shielding body cover the mutually common inner chamber that forms accommodating high radioactivity valve.
Further, described the first shield and described secondary shielding body correspondence offer through hole, and described the first shield and described secondary shielding body are connected and fixed by wearing the bolt of described through hole.
Further, described bolt is single ended bolt or stud bolt.
Further, described through hole corresponding four corner locations that are arranged at described the first shield and described secondary shielding body respectively.
Further, described the first shield and secondary shielding body are the shell-like structure that lead material casting forms.
Further, also comprise by the upper cartridge body of accommodating described the first shield and the lower box body of accommodating described secondary shielding body and cover mutually the box body forming.
Further, one end of described upper cartridge body and described lower box body is connected through the hinge, and the other end connects by buckle structure.
Further, described buckle structure is be arranged at grab on described upper cartridge body or buckling groove and be correspondingly located at buckling groove or the grab on described lower box body.
Further, one end of described upper cartridge body and described lower box body connects by the first buckle structure, and the other end connects by the second buckle structure.
Further, described the first buckle structure and described the second buckle structure are corresponding grab and the buckling groove arranging.
Further, described box body is stainless steel box body.
Further, described box body is also provided with handle.
The shield assembly of a kind of nuclear power station high radioactivity parts that the utility model provides, when the first shield and secondary shielding body cover mutually, high radioactivity valve can be placed in by the first shield and secondary shielding body and mutually cover in the common inner chamber forming, thereby play good shield effectiveness.Adopt this shield assembly to shield nuclear power station high radioactivity valve, have that volume is little, little, the easy accessibility of taking up room, can be applied to need on permanent shielding or the narrow and small high radioactivity valve of installing space, can be conveniently to advantages such as high radioactivity valve overhaul.
Accompanying drawing explanation
Structural representation before the first shield of the shield assembly of the nuclear power station high radioactivity parts that Fig. 1 provides for the utility model embodiment and secondary shielding body cover mutually;
Structural representation after the first shielding of the shield assembly of the nuclear power station high radioactivity parts that Fig. 2 provides for the utility model embodiment covers mutually with secondary shielding body;
Bolt that Fig. 3 provides for the utility model embodiment structural representation that the first shield and secondary shielding body are connected and fixed triangular in shape;
Structural representation before the box body of the shield assembly of the nuclear power station high radioactivity parts that Fig. 4 provides for the utility model embodiment covers;
Accommodating first shield of box body of the shield assembly of the nuclear power station high radioactivity parts that Fig. 5 provides for the utility model embodiment and the structural representation of secondary shielding body;
Structural representation after mutually covering after accommodating first shield of box body of the shield assembly of the nuclear power station high radioactivity parts that Fig. 6 provides for the utility model embodiment and secondary shielding body.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.Should be appreciated that specific embodiment described herein, only for explaining the utility model, is not limited to the utility model.
With reference to Fig. 1,2, the structural representation after the first shielding of the shield assembly of the structural representation before the first shield of the shield assembly of the nuclear power station high radioactivity parts that the utility model embodiment provides and secondary shielding body cover mutually, the nuclear power station high radioactivity parts that the utility model embodiment provides covers mutually with secondary shielding body.
The shield assembly of a kind of nuclear power station high radioactivity parts that the utility model embodiment provides, for the shielding of valve, comprises the first shield 11 and the secondary shielding body 12 that mutually cover; The first shield 11 and secondary shielding body 12 have respectively the first half chambeies 21 and the second half chambeies 22 of when the first shield 11 and secondary shielding body 12 cover the mutually common inner chamber 2 that forms accommodating high radioactivity valve.
The shield assembly of a kind of nuclear power station high radioactivity parts that the utility model provides, when the first shield 11 and secondary shielding body 12 cover mutually, high radioactivity valve can be placed in by the first shield 11 and secondary shielding body 12 and mutually cover in the common inner chamber forming 2, thereby play good shield effectiveness.Adopt this shield assembly to shield nuclear power station high radioactivity valve, have that volume is little, little, the easy accessibility of taking up room, can be applied to need on permanent shielding or the narrow and small high radioactivity valve of installing space, can be conveniently to advantages such as high radioactivity valve overhaul.
In the present embodiment, the first shield 11 and secondary shielding body 12 correspondences offer through hole 3, the first shields 11 and secondary shielding body 12 is connected and fixed by wearing the bolt 4 of through hole 3.
Wherein, bolt 4 is single ended bolt or stud bolt.
In the present embodiment, through hole 3 is corresponding four corners that are arranged at the first shield 11 and secondary shielding body 12 respectively.
Through hole 3 is arranged at four corners of the first shield 11 and secondary shielding body 12, can guarantee the fastness after the first shield 11 covers mutually with secondary shielding body 12.
In other embodiments, with reference to Fig. 3, bolt 4 that the utility model embodiment the provides structural representation that the first shield 11 and secondary shielding body 12 are connected and fixed triangular in shape.Guaranteeing under the prerequisite of the fastness after the first shield 11 covers mutually with secondary shielding body 12, for the speed that reduces the operation of processing and accelerate to install, through hole 3 can distribution triangular in shape be arranged on the first shield 11 and secondary shielding body 12, now bolt 4 is also triangular in shape is connected and fixed the first shield 11 and secondary shielding body 12.
In the present embodiment, the shell-like structure that the first shield 11 and secondary shielding body 12 form for lead material casting.
At present, the shielding material that nuclear power station is conventional has sheet lead, concrete walls, ceramic tile etc.And in the present embodiment, selected for the material of the first shield 11 and secondary shielding body 12, with reference to following 2 points:
The shield one, with same units area quality, even if they are made of different materials, also can provide the X that myopia is equal, the decay of gamma-rays flux.Therefore,, for the X that decays, gamma-rays flux, main requirement is to provide screening mass.Also have a second-order effects, the atomic number of shielding material is higher, and the X of given mass area ratio, gamma-rays flux decline are also larger.Therefore,, when limited space is processed, conventionally use the material (for example plumbous) of high density high atomic number.
Two, the alpha ray shield of nuclear power station is mainly aimed at X, gamma-rays, and the selection of shielding material is mainly considered to following aspect:
Barrier propterty (such as the generation of scattering, absorption, secondary radiation, activation etc.);
Structural behaviour (space, weight etc.);
Stability (with the incompatibility of other material);
Cost is low, source is wide, easily process, installation and maintenance are convenient etc.;
In sum, for the shielding of the high radioactivity valves such as PTR601 602VB of nuclear power station, should select the plumbous material as the first shield 11 and secondary shielding body 12.
In other embodiments, the first shield 11 and secondary shielding body 12 also can be the shield that the material of other maskable nuclear radiation such as zinc or iron is made.
In conjunction with Fig. 1,2, with reference to Fig. 4,5,6, the structural representation after mutually covering after accommodating first shield of box body of the shield assembly of accommodating first shield of box body of shield assembly of the structural representation of the box body of the shield assembly of the nuclear power station high radioactivity parts that the utility model embodiment provides before covering, nuclear power station high radioactivity parts that the utility model embodiment provides and the structural representation of secondary shielding body, nuclear power station high radioactivity parts that the utility model embodiment provides and secondary shielding body.
In the present embodiment, the shield assembly of nuclear power station high radioactivity parts also comprises by the upper cartridge body 41 of accommodating the first shield 11 and the lower box body 42 of accommodating secondary shielding body 12 and covers mutually the box body 4 forming.
By this box body 4, can protect the damage causing due to collision etc. using, in handling process of the first shield 11 and secondary shielding body 12.Adopt this box body 4, the first shield 11 and secondary shielding body 12 are placed in respectively in upper cartridge body 41 and lower box body 42, also can save the syndeton between the first shield 11 and secondary shielding body 12, save through hole 3 and bolt 4.
In the present embodiment, one end of upper cartridge body 41 and lower box body 42 connects by hinge (not shown), and the other end connects by buckle structure (not shown).
By hinge (not shown), upper cartridge body 41 can carry out opening and closing movement with lower box body 42; And by this buckle structure (not shown), upper cartridge body 41 and lower box body 42 firmly can be covered mutually.The upper cartridge body 41 of this box body 4 and this connected mode of lower box body 42, when the dismounting that high radioactivity valve is shielded, box body 4 is opened, now the one end between upper cartridge body 41 and lower box body 42 still links together by hinge 43, and the other end forms opening, by this opening can be very easily by high radioactivity valve lid in box body 4.Therefore this box body 4, providing in the present embodiment can further facilitate the dismounting of the shield assembly of this nuclear power station high radioactivity valve.
In the present embodiment, buckle structure (not shown) is be arranged at grab on upper cartridge body 41 or buckling groove and be correspondingly located at buckling groove or the grab on lower box body 42.
In other embodiments, one end of upper cartridge body 41 and lower box body 42 connects by the first buckle structure, and the other end connects by the second buckle structure.
Wherein, the first buckle structure and the second buckle structure are corresponding grab and the buckling groove arranging.Above-mentioned upper cartridge body 41 and lower box body 42 one end connect by hinge (not shown), in the connected mode that the other end connects by buckle structure (not shown), due to upper cartridge body 41 with the opening and closing movement of lower box body 42 for to carry out around hinge 43, so the first half chambeies 21 of the first shield 11 and secondary shielding body 12 and the second half formed inner chambers 2 in chamber 22 are difficult to mate with the profile of high radioactivity valve.And upper cartridge body 41 in this embodiment and one end of lower box body 42 connect by the first buckle structure, the other end connects by the second buckle structure, upper cartridge body 41 can directly connect or be separated with the opening and closing movement of lower box body 42, therefore, adopt this connected mode, the first half chambeies 21 of the first shield 11 and secondary shielding body 12 and the second half formed inner chambers 2 in chamber 22 can mate with the profile of high radioactivity valve completely, thereby inner chamber 2 is tightr with contacting of high radioactivity valve.
In the present embodiment, box body 4 is stainless steel box body.In other fact Examples, box body 4 also can be the box body that other materials such as adopting plastics, iron is made.Adopt stainless steel, can be the protection that the first shield 11 and secondary shielding body 12 provide sufficient intensity.
In the present embodiment, box body 4 is also provided with handle (not shown).By this handle (not shown), can facilitate the carrying of the shield of this nuclear power station high radioactivity valve.
Above are only the utility model preferred embodiment, be not limited to the utility model, all any modifications of doing within principle of the present utility model, be equal to and replace and improvement etc., within all should being included in the scope of the utility model protection.
Claims (12)
1. a shield assembly for nuclear power station high radioactivity parts, the shielding for nuclear power station high radioactivity valve, is characterized in that, comprises the first shield (11) and the secondary shielding body (12) that mutually cover; Described the first shield (11) and secondary shielding body (12) have respectively the first half chambeies (21) and the second half chambeies (22) of when described the first shield (11) and described secondary shielding body (12) cover the mutually common inner chamber (2) that forms accommodating high radioactivity valve.
2. the shield assembly of nuclear power station high radioactivity parts as claimed in claim 1, it is characterized in that, described the first shield (11) and described secondary shielding body (12) correspondence offer through hole (3), and described the first shield (11) and described secondary shielding body (12) are connected and fixed by wearing the bolt (4) of described through hole (3).
3. the shield assembly of nuclear power station high radioactivity parts as claimed in claim 2, is characterized in that, described bolt (4) is single ended bolt or stud bolt.
4. the shield assembly of nuclear power station high radioactivity parts as claimed in claim 2 or claim 3, is characterized in that, described through hole (3) respectively correspondence is arranged at four corner locations of described the first shield (11) and described secondary shielding body (12).
5. the shield assembly of the nuclear power station high radioactivity parts as described in claim 1～3 any one, is characterized in that, the shell-like structure that described the first shield (11) and secondary shielding body (12) form for lead material casting.
6. the shield assembly of nuclear power station high radioactivity parts as claimed in claim 1, it is characterized in that, also comprise by the upper cartridge body (41) of accommodating described the first shield (11) and the lower box body (42) of accommodating described secondary shielding body (12) and cover mutually the box body (4) forming.
7. the shield assembly of nuclear power station high radioactivity parts as claimed in claim 6, is characterized in that, one end of described upper cartridge body (41) and described lower box body (42) is connected through the hinge, and the other end connects by buckle structure.
8. the shield assembly of nuclear power station high radioactivity parts as claimed in claim 7, it is characterized in that, described buckle structure is located at buckling groove or the grab on described lower box body (42) for being arranged at grab on described upper cartridge body (41) or buckling groove and correspondence.
9. the shield assembly of nuclear power station high radioactivity parts as claimed in claim 6, is characterized in that, one end of described upper cartridge body (41) and described lower box body (42) connects by the first buckle structure, and the other end connects by the second buckle structure.
10. the shield assembly of nuclear power station high radioactivity parts as claimed in claim 9, is characterized in that, described the first buckle structure and described the second buckle structure are corresponding grab and the buckling groove arranging.
The shield assembly of 11. nuclear power station high radioactivity parts as described in claim 6～10, is characterized in that, described box body (4) is stainless steel box body.
The shield assembly of 12. nuclear power station high radioactivity parts as described in claim 6～10, is characterized in that, described box body (4) is also provided with handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320522861.7U CN203520888U (en) | 2013-08-16 | 2013-08-16 | Shielding device of high-radioactivity component of nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320522861.7U CN203520888U (en) | 2013-08-16 | 2013-08-16 | Shielding device of high-radioactivity component of nuclear power station |
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| Publication Number | Publication Date |
|---|---|
| CN203520888U true CN203520888U (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320522861.7U Expired - Fee Related CN203520888U (en) | 2013-08-16 | 2013-08-16 | Shielding device of high-radioactivity component of nuclear power station |
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| CN (1) | CN203520888U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111667930A (en) * | 2020-05-26 | 2020-09-15 | 中国原子能科学研究院 | DD neutron generator shielding device |
-
2013
- 2013-08-16 CN CN201320522861.7U patent/CN203520888U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111667930A (en) * | 2020-05-26 | 2020-09-15 | 中国原子能科学研究院 | DD neutron generator shielding device |
| CN111667930B (en) * | 2020-05-26 | 2022-06-28 | 中国原子能科学研究院 | DD neutron generator shielding device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 |
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| CF01 | Termination of patent right due to non-payment of annual fee |