CN102148064A - Frame type reactor control rod structure - Google Patents
Frame type reactor control rod structure Download PDFInfo
- Publication number
- CN102148064A CN102148064A CN2011100600435A CN201110060043A CN102148064A CN 102148064 A CN102148064 A CN 102148064A CN 2011100600435 A CN2011100600435 A CN 2011100600435A CN 201110060043 A CN201110060043 A CN 201110060043A CN 102148064 A CN102148064 A CN 102148064A
- Authority
- CN
- China
- Prior art keywords
- control rod
- absorber
- type reactor
- rod structure
- frame
- 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
- 239000006096 absorbing agent Substances 0.000 claims abstract description 34
- 229910052735 hafnium Inorganic materials 0.000 claims description 14
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical group [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 14
- 125000006850 spacer group Chemical group 0.000 claims description 10
- 230000014759 maintenance of location Effects 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 7
- 239000012530 fluid Substances 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 230000002745 absorbent Effects 0.000 description 4
- 239000002250 absorbent Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000009257 reactivity Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052580 B4C Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- 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
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention discloses a frame type reactor control rod structure, which comprises a frame, a framework and a connecting piece, wherein the frame is formed by connecting mutually independent absorbers, the framework is formed by connecting an upper connector, a lower connector and a connecting pipe, and the connecting piece is provided with a spring hook and a positioning sheet; the lower end of the absorber is fixed on the lower joint, and the upper end of the absorber is movably connected on the upper joint; the spring hook and the positioning sheet are fixed on the lower joint. The invention provides the frame type reactor control rod structure which has the advantages of simple structure, small component deformation, convenient manufacturing and installation of the absorber, improved safety and reliability, and convenient remote loading, unloading and replacement.
Description
Technical field
The present invention relates to the reactor engineering technical field, particularly a kind of frame-type reactor control rod structure.
Background technology
In reactor, the control rod system generally includes control rod absorber, control rod drive mechanisms (CRD), control rod guide tube, rod control system etc., be to carry out pile reactivity to control one of most important system,, almost be reactivity control system unique under the normal operating condition particularly for research reactor.For research reactor, the task of control rod control comprises temperature and cavity effect, reactive poisoning effect and the safe shutdown etc. of burnup reactivity shimming, reactor capability adjusting, fuel Doppler effect, moderator and cooling medium.
The main effect of reactor control rod system is by regulating the absorption that amount that absorbent material enters reactor core is controlled neutron, thereby influence is reactive.
The reactor control rod structure mainly contains forms such as bar-shaped (or cluster), square pipe, tubular type, adopts club shaped structure as domestic HWRR, and Japanese JRR-3M adopts the square tubular construction.In the control rod design, manage the thermal neutron and epithermal neutron receptivity of designing requirement except satisfying stacking yard; On structural design, also need to consider to reduce control rod axially, be radially expanded the modular construction distortion that causes; Control rod should keep structural integrity under neutron irradiation, fluid generation vibration, abrasion, pressure surge effect; Reach under shutdown, the earthquake conditions control rod motion, fast inserting, can bear its percussive action, and in guide pipe, move freely.Under normal operating condition and predicted operation incident operating mode, the distortion of control rod assembly should not influence it and insert reactor core.
And aspect the absorbent material selection, reactor control rod neutron absorbing material commonly used has silver, indium, cadmium, hafnium, boron carbide etc.These materials can use separately, also can combine as absorber.Wherein, hafnium has moderate thermal neutron receptivity and higher epithermal neutron receptivity, and many resonance absorbing peaks are arranged in the epithermal region; And formed isotope also has very high absorption cross section behind the hafnium atom intercept neutrons, so hafnium can still keep its receptivity as control material behind Long-Duration Exposure, is a kind of long-life control material.Hafnium fusing point height has favorable mechanical performance and heat-resisting aqueous corrosion performance, and irradiation behaviour is stable.In addition, because the isotope half life period that hafnium produced is shorter, the loading and unloading when being convenient to follow the fluid fuel unit replacement.
At present, domestic research reactor, test reactor, nuclear power station do not use hafnium to make the control absorber.But hafnium is made absorbent material in reactor, and this is a kind of trend of development.Because hafnium is more serious at the irradiation growth that is parallel to the rolling direction hafnium in the irradiation process, and in the existing control rod structure, absorber all is to adopt integral structure, because each face of absorbent material, towards difference, neutron fluence rate differs greatly in reactor core, this species diversity differs greatly the irradiation growth of each face of absorber, make integral structure cause the bending of control rod absorber easily, may cause the rod seizure accident of control rod, reactor operation safety is brought great hidden danger.
Summary of the invention
The present invention has overcome deficiency of the prior art, provides a kind of simple in structure, and the assembly distortion is little, absorber manufacturing and easy for installation, and security and reliability improve, and the frame-type reactor control rod structure of being convenient to remote loading and unloading and changing.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of frame-type reactor control rod structure comprises framework, skeleton, web member, and key is, framework be by mutually independently absorber connect and compose, skeleton is formed by connecting by top connection, lower sub and connecting pipe, web member is made up of carbine and spacer; The lower end of absorber is fixed in the lower sub, and the upper end is movably connected in the top connection; Carbine and spacer are fixed in the lower sub.
Described framework connects and composes square framework for mutual independently 4 absorbers.Described absorber is a hafnium plate.Described top connection, lower sub, connecting pipe are stainless steel.Described upper end be movably connected in the top connection for absorber and slide block by screw retention on the slide rail of top connection.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention adopts mutually independently, and absorber connects to form, make each face of control rod absorber irradiation growth separately independently, adopt the slide rail guidance mode to flexibly connect, can stretch vertically separately after making each absorber irradiation, avoid the thermal expansion of control rod absorber to cause the assembly distortion.Manufacturing and installation that this invention is simple in structure, made things convenient for absorber.Adopt the design of carbine to make the loading and unloading or the replacing of control rod, and become more convenient, improved the reliability that connects simultaneously with being connected of drives structure.
Description of drawings
Fig. 1 control rod structure cut-open view
Fig. 2 A-A sectional view as shown in Figure 1
1 top connection, 2 slide blocks, 3 absorbers, 4 connecting pipes, 5 lower subs, 6 carbines, 7 spacers, 8 boss
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:
A kind of frame-type reactor control rod structure, as shown in Figure 1 and Figure 2, this device is arranged in the reactor core, the control rod lower end with follow fluid fuel assembly upper end and be connected, follow fluid fuel assembly lower end and be connected with the control rod drive mechanisms (CRD) drive link, so just by control rod, follow the body assembly and driving mechanism has constituted a complete reactor control rod system.Whole device places in the control rod guide tube in vertical state, control rod mainly is made of framework, skeleton, web member three parts, its middle frame be by mutually independently absorber 3 connect and compose, skeleton is formed by connecting by top connection 1, connecting pipe 4 and lower sub 5, and web member is made up of carbine 6 and spacer 7; In lower sub 5, the upper end of absorber 3 is movably connected in the top connection 1 by screw retention in the lower end of absorber 3.
Present embodiment preferably adopts mutually independently, and 4 hafnium absorbers 3 connect and compose square framework.Top connection 1, lower sub 5, connecting pipe 4 etc. adopt stainless steel.Wherein absorber 3 upper ends adopt slide rail guidance mode and top connection 1 to flexibly connect, be absorber 3 upper ends and slide block 2 by screw retention on the slide rail of top connection 1, hafnium plate 3 axially can extend mobile, make 3 four faces of control rod absorber irradiation growth separately independently, reduced and set up distortion, improved the safety and the reliability of control rod.
In the lower sub 5 of control rod web member is set, web member is made up of carbine 6 and spacer 7, and carbine 6 and spacer 7 are fixed in the lower sub 5 together by screw.Carbine 6 rotations are inserted into the pilot hole of following body assembly upper end, realize control rod and follow being connected of body assembly.Because spacer 7 rigidity are very strong, spacer 7 energy fixing spring hooks 6 play a supportive role to carbine 6, have strengthened the intensity and the connection stability of hook.
Be provided with handling hole in the control rod upper end, connect specific purpose tool, be used for control rod loading and unloading or replacing.For the vibration of limiter assembly in conduit, top connection and lower sub all be provided with boss 8, to guarantee the fit-up gap of assembly and pipe inner wall, keep the gap even, the cooling of enhancing outer wall.
When carrying out control rod and following the body assembly when being connected, earlier control rod is inserted at a certain angle the junction of following body assembly upper end, Spin Control rod then, make the springs hook 6 on the web member enter into the square pilot hole of following body assembly upper end, like this control rod by carbine with follow the fluid fuel assembly and realized being connected; Otherwise, when carrying out control rod and following the dismounting of body assembly, then control rod is rotated with opposite direction, make carbine 6 and the pilot hole of following the body assembly break away from, again control rod is proposed, realize both separation.
Claims (5)
1. frame-type reactor control rod structure, comprise framework, skeleton, web member, it is characterized in that, framework be by mutually independently absorber connect and compose, skeleton is formed by connecting by top connection, lower sub and connecting pipe, and web member is made up of carbine and spacer; The lower end of absorber is fixed in the lower sub, and the upper end is movably connected in the top connection; Carbine and spacer are fixed in the lower sub.
2. a kind of frame-type reactor control rod structure according to claim 1 is characterized in that, described framework connects and composes square framework for mutual independently 4 absorbers.
3. a kind of frame-type reactor control rod structure according to claim 1 is characterized in that described absorber is a hafnium plate.
4. a kind of frame-type reactor control rod structure according to claim 1 is characterized in that described top connection, lower sub, connecting pipe are stainless steel.
5. a kind of frame-type reactor control rod structure according to claim 1 is characterized in that, described upper end be movably connected in the top connection for absorber and slide block by screw retention on the slide rail of top connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100600435A CN102148064A (en) | 2011-03-14 | 2011-03-14 | Frame type reactor control rod structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100600435A CN102148064A (en) | 2011-03-14 | 2011-03-14 | Frame type reactor control rod structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102148064A true CN102148064A (en) | 2011-08-10 |
Family
ID=44422274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100600435A Pending CN102148064A (en) | 2011-03-14 | 2011-03-14 | Frame type reactor control rod structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102148064A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103077756A (en) * | 2013-01-13 | 2013-05-01 | 中国科学院合肥物质科学研究院 | Clamp device of refueling machine for liquid heavy metal cooling pile |
| CN104094359A (en) * | 2011-12-02 | 2014-10-08 | 原子能和替代能源委员会 | Device for triggering and inserting absorbing members and/or mitigators in fissile area of nuclear reactor and nuclear fuel assembly comprising the device |
| CN109378091A (en) * | 2018-11-12 | 2019-02-22 | 中国原子能科学研究院 | A kind of control rod guide tubes and bundles structure |
| CN109585041A (en) * | 2018-12-29 | 2019-04-05 | 中国原子能科学研究院 | A kind of reactor capability is adjusted and shutdown control rod drive mechanism |
| CN114530265A (en) * | 2022-01-11 | 2022-05-24 | 中国原子能科学研究院 | Safety rod for nuclear reactor and nuclear reactor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5796289A (en) * | 1980-12-08 | 1982-06-15 | Nippon Atomic Ind Group Co | Nuclear reactor control rod |
| JPH04301793A (en) * | 1991-03-29 | 1992-10-26 | Toshiba Corp | Control rod for atomic reactor |
| CN1197533A (en) * | 1996-06-14 | 1998-10-28 | 法玛通公司 | Absorbent pencil for a nuclear reactor control cluster, and method for making same |
| CN101252025A (en) * | 2008-03-13 | 2008-08-27 | 上海核工程研究设计院 | Heavy water stack cobalt regulating rod component |
| CN201975091U (en) * | 2011-03-14 | 2011-09-14 | 中国原子能科学研究院 | Framework type reactor control rod structure |
-
2011
- 2011-03-14 CN CN2011100600435A patent/CN102148064A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5796289A (en) * | 1980-12-08 | 1982-06-15 | Nippon Atomic Ind Group Co | Nuclear reactor control rod |
| JPH04301793A (en) * | 1991-03-29 | 1992-10-26 | Toshiba Corp | Control rod for atomic reactor |
| CN1197533A (en) * | 1996-06-14 | 1998-10-28 | 法玛通公司 | Absorbent pencil for a nuclear reactor control cluster, and method for making same |
| CN101252025A (en) * | 2008-03-13 | 2008-08-27 | 上海核工程研究设计院 | Heavy water stack cobalt regulating rod component |
| CN201975091U (en) * | 2011-03-14 | 2011-09-14 | 中国原子能科学研究院 | Framework type reactor control rod structure |
Non-Patent Citations (2)
| Title |
|---|
| 孙志勇等: "CARR控制棒物理设计计算", 《核动力工程》 * |
| 杨长江等: "中国先进研究堆控制棒组件三维流场分析", 《核动力工程》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104094359A (en) * | 2011-12-02 | 2014-10-08 | 原子能和替代能源委员会 | Device for triggering and inserting absorbing members and/or mitigators in fissile area of nuclear reactor and nuclear fuel assembly comprising the device |
| CN104094359B (en) * | 2011-12-02 | 2016-08-24 | 原子能和替代能源委员会 | For absorption component and/or demulcent being triggered and are inserted into the device fissioned in region of nuclear reactor and including the nuclear fuel assembly of this device |
| CN103077756A (en) * | 2013-01-13 | 2013-05-01 | 中国科学院合肥物质科学研究院 | Clamp device of refueling machine for liquid heavy metal cooling pile |
| CN103077756B (en) * | 2013-01-13 | 2016-02-17 | 中国科学院合肥物质科学研究院 | A kind of refueling machine grip device for liquid heavy metal cools stacks |
| CN109378091A (en) * | 2018-11-12 | 2019-02-22 | 中国原子能科学研究院 | A kind of control rod guide tubes and bundles structure |
| CN109585041A (en) * | 2018-12-29 | 2019-04-05 | 中国原子能科学研究院 | A kind of reactor capability is adjusted and shutdown control rod drive mechanism |
| CN109585041B (en) * | 2018-12-29 | 2024-05-10 | 中国原子能科学研究院 | Control rod driving mechanism for reactor power adjustment and shutdown |
| CN114530265A (en) * | 2022-01-11 | 2022-05-24 | 中国原子能科学研究院 | Safety rod for nuclear reactor and nuclear reactor |
| CN114530265B (en) * | 2022-01-11 | 2024-03-22 | 中国原子能科学研究院 | Safety rod for nuclear reactor and nuclear reactor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101223607B (en) | Advanced gray rod control assembly | |
| CN101369468B (en) | Nuclear reactor robust gray control rod | |
| CN204130191U (en) | Cruciform C&P systems | |
| CN101252025B (en) | Heavy water stack cobalt regulating rod component | |
| CN102148064A (en) | Frame type reactor control rod structure | |
| US20080084957A1 (en) | Nuclear reactor fuel assemblies | |
| CN103858174B (en) | Realize the method for automatic axial power distributed controll | |
| KR20110044267A (en) | Mixed oxide fuel assembly | |
| CN103778972A (en) | Control rod assembly comprising axial partition control rod and heavy metal absorber rod | |
| WO2018107170A1 (en) | Small modular reactor power plant with load following and cogeneration capabilities and methods of using | |
| CN104246903A (en) | Small modular reactor fuel assembly | |
| CN103236276A (en) | Control rod for liquid heavy metal cooling reactor | |
| CN201975091U (en) | Framework type reactor control rod structure | |
| JP5006233B2 (en) | Propagable nuclear fuel assembly using thorium-based nuclear fuel. | |
| CN103474101A (en) | Nuclear reactor core arrangement of nuclear power station | |
| US8670519B2 (en) | Nuclear fuel assembly hold down spring | |
| EP2859555B1 (en) | Nuclear control rod with flexure joint | |
| CN113035383A (en) | Reactor system with high inherent safety | |
| US20120063562A1 (en) | Dual-cooled fuel rod's spacer grids with upper and lower cross-wavy-shape dimple | |
| CN214752962U (en) | Reactor system with high inherent safety | |
| Kim et al. | Reactor shutdown mechanism by top-mounted hydraulic system | |
| CN101656112A (en) | Follower component driven by driving mechanism in pressure shell and water reactor adopting same | |
| De Bruyn et al. | Main achievements of the FP7-LEADER collaborative project of the European Commission regarding the design of a Lead-cooled Fast Reactor | |
| CN203134390U (en) | Backward push type reactor pressure vessel with reactor internals | |
| DiJulio et al. | Performance Optimization of the Neutron Powder Diffractometer at the NC State University PULSTAR Reactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110810 |