CN105957562A - Reactivity control sleeve - Google Patents
Reactivity control sleeve Download PDFInfo
- Publication number
- CN105957562A CN105957562A CN201610523476.2A CN201610523476A CN105957562A CN 105957562 A CN105957562 A CN 105957562A CN 201610523476 A CN201610523476 A CN 201610523476A CN 105957562 A CN105957562 A CN 105957562A
- Authority
- CN
- China
- Prior art keywords
- fixed body
- neutron absorber
- reflection layer
- overlapped
- absorber material
- 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.)
- Pending
Links
- 230000009257 reactivity Effects 0.000 title claims abstract description 12
- 239000000463 material Substances 0.000 claims description 31
- 239000006096 absorbing agent Substances 0.000 claims description 25
- 239000000446 fuel Substances 0.000 claims description 6
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical group [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 230000007246 mechanism Effects 0.000 abstract description 11
- 239000011358 absorbing material Substances 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003758 nuclear fuel Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C7/00—Control of nuclear reaction
- G21C7/28—Control of nuclear reaction by displacement of the reflector or parts thereof
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Radiation-Therapy Devices (AREA)
Abstract
The invention provides a reactivity control sleeve. The reactivity control sleeve comprises a hollow fixing body, a neutron absorbing material, sliding reflective layers and a driving device, wherein the neutron absorbing material is uniformly arranged on the hollow fixing body by sections; the sliding reflective layers are arranged at the inner side of the hollow fixing body, and are surrounded on the inner wall of the hollow fixing body by sections at intervals; the driving device is used for driving the sliding reflective layers to move up and down, so as to enable the sliding reflective layers to shield the neutron absorbing material or expose out of the neutron absorbing material. Compared with the prior art, the reactivity control sleeve has the beneficial effects that the heights of the driving mechanism and a control bar travel pressure-resistant casing are obviously reduced; the reactivity control sleeve is suitable for nuclear reactors with smaller power, the height of the whole reactor body is obviously reduced, and the safety of the reactor is improved.
Description
Technical field
The present invention relates to a kind of reactive control overlap.
Background technology
In nuclear reactor engineering, reactive control is realized by control rod mechanism.Such as Fig. 7 institute
Showing, traditional control rod mechanism, the cluster of its control rod is (generally by having the material group absorbing neutron ability
Become) symmetrical and be inserted in equably in fuel assembly, control rod mechanism is by driving the cluster of control rod on the whole
Lower movement, it is achieved reactive control.The design of traditional control rod mechanism, primarily to realize in combustion
Material component internal arranges control rod cluster as much as possible, to provide enough negative reactivity, could offset combustion
The positive reactivity of nuclear fuel in charge bar, thus ensure the safety of reactor.But, traditional control rod mechanism
Also exist and there is volume greatly, the problem of stroke length.
Small reactor (electrical power ＜ 300MWe), the quantity of its fuel rod is conventional standard reactor (electricity
Power is generally 1000MWe) 30% or less, the reactivity of whole reactor core is relatively low.Therefore,
Can be by the peripheral disposition neutron absorber material at fuel assembly, to realize controlling reactive purpose.
On the other hand, Small reactor requires that the volume of whole reactor is less, and tradition as shown in Figure 7
The design of control rod mechanism, be to limit one of restraining factors that Small reactor reduces in short transverse.
Therefore, how to provide a kind of volume little, stroke is short, and safety height control rod mechanism becomes and urgently solves
Problem certainly.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, propose a kind of reactivity and control set, described reactive control is overlapped
Including hollow fixed body, neutron absorber material, sliding reflection layer and driving means, wherein, described neutron
Absorbing material is uniformly and step-by-step arrangement is on described hollow fixed body；Described sliding reflection layer be arranged at described in
The inner side of empty fixed body, section gap ground is around the inwall of described hollow fixed body；Described driving means drives
Described sliding reflection layer moves up and down so that described sliding reflection layer cover described neutron absorber material or
Described neutron absorber material is made to expose.
Preferably, described neutron absorber material is set greater than equal to 2 sections, every section of described neutron absorber material
Be set to along described hollow fixed body radially extend ring-type.
Preferably, described sliding reflection layer shape is suitable with the shape of described neutron absorber material, thus
Move up and down under the driving of described driving means and just cover described neutron absorber material.
Preferably, the described reactive set that controls is enclosed in outside fuel assembly.
Preferably, described sliding reflection layer is metal material.
Preferably, described sliding reflection layer is the material with reflected neutron ability.
Preferably, the cross section of described hollow fixed body is arbitrary shape.
Preferably, the cross section of described hollow fixed body is circular.
Preferably, the cross section of described hollow fixed body is square.
Compared with prior art, the present invention has and significantly reduces drive mechanism and control rod stroke pneumatic shell
Highly, it is applicable to lower-powered nuclear reactor, makes the highly significant of whole reactor body reduce,
Add the beneficial effect of the safety of reactor simultaneously.
Accompanying drawing explanation
Fig. 1 is that reactive control theing meet the preferred embodiment of the present invention is enclosed within the state exposing neutron absorber material
Under axonometric chart.
Fig. 2 is the reactive state controlling to be enclosed within shield neutrons absorbing material meeting the preferred embodiment of the present invention
Under axonometric chart.
Fig. 3 is that reactive control theing meet the preferred embodiment of the present invention is enclosed within the state exposing neutron absorber material
Under sectional view.
Fig. 4 is the reactive state controlling to be enclosed within shield neutrons absorbing material meeting the preferred embodiment of the present invention
Under sectional view.
Fig. 5 is the reactive exploded view controlling set meeting the preferred embodiment of the present invention.
Fig. 6 is the axonometric chart meeting the another kind of embodiment that reactivity of the present invention controls set.
Fig. 7 is the schematic diagram of traditional control rod mechanism.
Detailed description of the invention
Understandable for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from, below in conjunction with the accompanying drawings and
The present invention is further detailed explanation for detailed description of the invention.
As shown in Fig. 1 to Fig. 6, the present invention proposes a kind of reactive set that controls, and described reactivity controls set bag
Include hollow fixed body 1, neutron absorber material 2, sliding reflection layer 3 and driving means 4, wherein,
Uniformly and step-by-step arrangement is on described hollow fixed body 1 for described neutron absorber material 2；
Described sliding reflection layer 3 is arranged at the inner side of described hollow fixed body 1, and section gap ground is around described
The inwall of hollow fixed body 1；
Described driving means 4 drives described sliding reflection layer 3 to move up and down, so that described sliding reflection layer 3
Cover described neutron absorber material 2 or make described neutron absorber material 2 expose.
Preferably, as it is shown in figure 5, described neutron absorber material 2 is set greater than equal to 2 sections, every section of institute
State neutron absorber material 2 be set to along described hollow fixed body 1 radially extend ring-type.
Preferably, as it is shown on figure 3, the shape of described sliding reflection layer 3 shape and described neutron absorber material 2
Shape is suitable, thus moves up and down under the driving of described driving means 4 and just cover described neutron
Absorbing material 2.
Preferably, the described reactive set that controls is enclosed in outside fuel assembly.
Preferably, described sliding reflection layer 3 is metal material.
Preferably, described sliding reflection layer 3 is the material with reflected neutron ability.
Preferably, the cross section of described hollow fixed body 1 is arbitrary shape.
Preferably, as it is shown in figure 5, the cross section of described hollow fixed body 1 is circular.
Preferably, as shown in Figure 6, the cross section of described hollow fixed body 1 is square.
Compared with prior art, the present invention has and significantly reduces drive mechanism and control rod stroke pneumatic shell
Highly, it is applicable to lower-powered nuclear reactor, makes the highly significant of whole reactor body reduce,
Add the beneficial effect of the safety of reactor simultaneously.
In this specification, each embodiment uses the mode gone forward one by one to describe, and what each embodiment stressed is
With the difference of other embodiments, between each embodiment, identical similar portion sees mutually.For
For system disclosed in embodiment, owing to corresponding to the method disclosed in Example, so the comparison described is simple
Single, relevant part sees method part and illustrates.
Each specifically should being used for can be used different methods to realize described merit by those skilled in the art
Can, but this realization is it is not considered that beyond the scope of this invention.
Obviously, those skilled in the art can carry out various change and modification without deviating from the present invention to invention
Spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and
Within the scope of equivalent technologies, then the present invention is also intended to change and including modification include these.
Claims (9)
1. one kind reactive controls set, it is characterised in that described reactive control set include hollow fixed body,
Neutron absorber material, sliding reflection layer and driving means, wherein,
Described neutron absorber material is uniformly and step-by-step arrangement is on described hollow fixed body；
Described sliding reflection layer is arranged at the inner side of described hollow fixed body, and section gap ground is around described hollow
The inwall of fixed body；
Described driving means drives described sliding reflection layer to move up and down, so that described sliding reflection layer covers
Described neutron absorber material or make described neutron absorber material expose.
2. reactive control as claimed in claim 1 is overlapped, it is characterised in that described neutron absorber material sets
Being set to more than or equal to 2 sections, every section of described neutron absorber material is set to prolong along the radial direction of described hollow fixed body
That stretches is ring-type.
3. reactive control as claimed in claim 1 is overlapped, it is characterised in that described sliding reflection layer shape
Suitable with the shape of described neutron absorber material, thus move down on carrying out under the driving of described driving means
Move and just cover described neutron absorber material.
4. reactive control as claimed in claim 1 is overlapped, it is characterised in that described reactivity controls set bag
It is trapped among outside fuel assembly.
5. reactive control as claimed in claim 1 is overlapped, it is characterised in that described sliding reflection layer is gold
Belong to material.
6. reactive control as claimed in claim 1 is overlapped, it is characterised in that described sliding reflection layer is tool
There is the material of reflected neutron ability.
7. reactive control as claimed in claim 1 is overlapped, it is characterised in that cutting of described hollow fixed body
Face is arbitrary shape.
8. reactive control as claimed in claim 1 is overlapped, it is characterised in that cutting of described hollow fixed body
Face is circular.
9. reactive control as claimed in claim 1 is overlapped, it is characterised in that cutting of described hollow fixed body
Face is square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610523476.2A CN105957562A (en) | 2016-07-05 | 2016-07-05 | Reactivity control sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610523476.2A CN105957562A (en) | 2016-07-05 | 2016-07-05 | Reactivity control sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105957562A true CN105957562A (en) | 2016-09-21 |
Family
ID=56902413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610523476.2A Pending CN105957562A (en) | 2016-07-05 | 2016-07-05 | Reactivity control sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105957562A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106910536A (en) * | 2017-04-18 | 2017-06-30 | 中国科学院近代物理研究所 | Reactivity control system and nuclear reactor |
| CN108269623A (en) * | 2016-12-30 | 2018-07-10 | 韩国科学技术院 | Nuclear fuel assembly for thermal neutron reactor |
| CN110415839A (en) * | 2019-07-23 | 2019-11-05 | 哈尔滨工程大学 | A kind of nuclear reactor control device based on varistructure |
| CN112037937A (en) * | 2020-09-07 | 2020-12-04 | 中国舰船研究设计中心 | Grid type control drum device of small fast neutron reactor |
| CN113241201A (en) * | 2021-04-29 | 2021-08-10 | 西南科技大学 | Non-uniform control rod with non-uniform reflecting layer |
| CN114530264A (en) * | 2022-01-04 | 2022-05-24 | 中国原子能科学研究院 | Space heap |
Citations (12)
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|---|---|---|---|---|
| GB889702A (en) * | 1959-03-21 | 1962-02-21 | Siemens Ag | A control and shut-down device for a nuclear reactor |
| FR1355718A (en) * | 1963-02-06 | 1964-03-20 | Method and devices for controlling the criticality of a nuclear reactor | |
| FR1399363A (en) * | 1964-06-23 | 1965-05-14 | Hitachi Ltd | Thermal neutron reactor |
| GB1132472A (en) * | 1965-08-13 | 1968-11-06 | English Electric Co Ltd | Controlling nuclear reactors |
| GB1148093A (en) * | 1965-08-13 | 1969-04-10 | English Electric Co Ltd | Controlling nuclear reactors |
| US4568515A (en) * | 1985-02-08 | 1986-02-04 | The United States Of America As Represented By The United States Department Of Energy | Control system for a small fission reactor |
| GB8717137D0 (en) * | 1987-07-28 | 1990-11-21 | Nat Nuclear Corp Ltd | Nuclear reactor-based power source |
| JPH0651082A (en) * | 1992-07-30 | 1994-02-25 | Toshiba Corp | Nuclear reactor of reflector control type |
| JPH10206580A (en) * | 1997-01-27 | 1998-08-07 | Toshiba Corp | Fast reactor |
| US20050220251A1 (en) * | 2004-02-19 | 2005-10-06 | Kabushiki Kaisha Toshiba | Fast reactor having reflector control system and neutron reflector thereof |
| JP2008191069A (en) * | 2007-02-07 | 2008-08-21 | Toshiba Corp | Reflector control type fast reactor, and neutron detector installation method and operation method for same |
| CN206363765U (en) * | 2016-07-05 | 2017-07-28 | 上海核工程研究设计院 | A kind of reactivity control set |
-
2016
- 2016-07-05 CN CN201610523476.2A patent/CN105957562A/en active Pending
Patent Citations (12)
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|---|---|---|---|---|
| GB889702A (en) * | 1959-03-21 | 1962-02-21 | Siemens Ag | A control and shut-down device for a nuclear reactor |
| FR1355718A (en) * | 1963-02-06 | 1964-03-20 | Method and devices for controlling the criticality of a nuclear reactor | |
| FR1399363A (en) * | 1964-06-23 | 1965-05-14 | Hitachi Ltd | Thermal neutron reactor |
| GB1132472A (en) * | 1965-08-13 | 1968-11-06 | English Electric Co Ltd | Controlling nuclear reactors |
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| US4568515A (en) * | 1985-02-08 | 1986-02-04 | The United States Of America As Represented By The United States Department Of Energy | Control system for a small fission reactor |
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| JPH0651082A (en) * | 1992-07-30 | 1994-02-25 | Toshiba Corp | Nuclear reactor of reflector control type |
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| US20050220251A1 (en) * | 2004-02-19 | 2005-10-06 | Kabushiki Kaisha Toshiba | Fast reactor having reflector control system and neutron reflector thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108269623A (en) * | 2016-12-30 | 2018-07-10 | 韩国科学技术院 | Nuclear fuel assembly for thermal neutron reactor |
| CN106910536A (en) * | 2017-04-18 | 2017-06-30 | 中国科学院近代物理研究所 | Reactivity control system and nuclear reactor |
| CN106910536B (en) * | 2017-04-18 | 2018-11-06 | 中国科学院近代物理研究所 | Reactivity control system and nuclear reactor |
| CN110415839A (en) * | 2019-07-23 | 2019-11-05 | 哈尔滨工程大学 | A kind of nuclear reactor control device based on varistructure |
| CN110415839B (en) * | 2019-07-23 | 2023-07-14 | 哈尔滨工程大学 | Nuclear reactor control device based on variable structure |
| CN112037937A (en) * | 2020-09-07 | 2020-12-04 | 中国舰船研究设计中心 | Grid type control drum device of small fast neutron reactor |
| CN113241201A (en) * | 2021-04-29 | 2021-08-10 | 西南科技大学 | Non-uniform control rod with non-uniform reflecting layer |
| CN113241201B (en) * | 2021-04-29 | 2022-03-04 | 西南科技大学 | Non-uniform control rod with non-uniform reflecting layer |
| CN114530264A (en) * | 2022-01-04 | 2022-05-24 | 中国原子能科学研究院 | Space heap |
| CN114530264B (en) * | 2022-01-04 | 2024-02-20 | 中国原子能科学研究院 | Space pile |
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| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Applicant after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai Applicant before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160921 |
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| WD01 | Invention patent application deemed withdrawn after publication |