CN109036593A - A kind of novel core barrel structure - Google Patents

A kind of novel core barrel structure Download PDF

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Publication number
CN109036593A
CN109036593A CN201810803222.5A CN201810803222A CN109036593A CN 109036593 A CN109036593 A CN 109036593A CN 201810803222 A CN201810803222 A CN 201810803222A CN 109036593 A CN109036593 A CN 109036593A
Authority
CN
China
Prior art keywords
cylinder
flange
inner flange
part inner
mutually fixed
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
Application number
CN201810803222.5A
Other languages
Chinese (zh)
Inventor
韩万富
黄天荣
路广遥
宋磊
刘青松
唐叔建
芮旻
周建民
翟立宏
钟金童
周国丰
董超群
赵月扬
袁杰
张超
苏晓炜
陈青山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China General Nuclear Power Corp
China Nuclear Power Technology Research Institute Co Ltd
CGN Power Co Ltd
China Nuclear Power Institute Co Ltd
Original Assignee
China General Nuclear Power Corp
China Nuclear Power Technology Research Institute Co Ltd
CGN Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China General Nuclear Power Corp, China Nuclear Power Technology Research Institute Co Ltd, CGN Power Co Ltd filed Critical China General Nuclear Power Corp
Priority to CN201810803222.5A priority Critical patent/CN109036593A/en
Publication of CN109036593A publication Critical patent/CN109036593A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21CNUCLEAR REACTORS
    • G21C5/00Moderator or core structure; Selection of materials for use as moderator
    • G21C5/02Details
    • G21C5/10Means for supporting the complete structure
    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21CNUCLEAR REACTORS
    • G21C19/00Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
    • G21C19/02Details of handling arrangements
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

The invention discloses a kind of novel core barrel structures, for in the pressure vessel of presurized water reactor, it includes at least upper support flange (1), top cylinder (2), lower cylinder (4), lower part inner flange (6) and reactor core lower plate (5), in which: at least provided with hole for hoist (10) on the upper support flange (1);The top cylinder (2) is mutually fixed with the upper support flange (1), provided circumferentially about has multilayer discharge orifice (20) at its;The lower cylinder (4) is mutually fixed with top cylinder (2) bottom end;The upper end of the lower part inner flange (6) and the bottom end of the lower cylinder (4) are mutually fixed;Lower part inner flange (6) upper surface is provided with bearing step (60), and reactor core lower plate (5) is placed on the bearing step (60) and mutually fixes with lower part inner flange (6).Implement the present invention, have many advantages, such as it is simple and strong in structure, be easy to lift, conducive to scram.

Description

A kind of novel core barrel structure
Technical field
The present invention relates to technical field of nuclear power, more particularly to a kind of novel core barrel structure.
Background technique
In the reactor core of existing presurized water reactor, the scram by realizing control rod using hanging basket component is needed.But it is existing There is hanging basket component generally using discharge orifice is concentrated, in realizing the course of work, the collection middle outlet is because of transverse flow caused by suction; If the load reaches a certain level, control rod guide tubes and bundles component can be made to bend;On the other hand the transversely acting meeting Cause the frictional force between control rod and guide cylinder to become larger, is unfavorable for Dropping of control rod.
Therefore how to provide a kind of performance more preferably core barrel component becomes a problem to be solved.
Summary of the invention
Technical problem to be solved by the present invention lies in, a kind of novel core barrel structure is provided, it is simple with structure Securely, it is easy to lift, is conducive to the advantages that scram.
In order to solve the above technical problems, the embodiment of the present invention provides a kind of novel core barrel structure, for presurized water reactor In pressure vessel, upper support flange, top cylinder, lower cylinder, lower part inner flange and reactor core lower plate are included at least, In:
At least provided with lifting advances through hole on the upper support flange;
The top cylinder is mutually fixed with the upper support flange, provided circumferentially about has multilayer discharge orifice at its;
The lower cylinder is mutually fixed with top cylinder bottom end;
The upper end of the lower part inner flange is mutually fixed with the lower cylinder bottom end;
Lower part inner flange upper surface is provided with bearing step, and reactor core lower plate is placed on the bearing step and mutually consolidates with inner flange It is fixed.
Wherein, upper support flange upper surface is further provided with step and cooling for installing holddown spring Discharge orifice.
Wherein, middle part supported flange is provided between top cylinder and lower cylinder.
Wherein, upper support flange and the upper end of the top cylinder are mutually fixed by welding manner, the lower part Nei Fa Blue upper end and the lower end of the lower cylinder are mutually fixed by welding manner;
Wherein, it is attached between the reactor core lower plate and lower part inner flange using mechanical system.
Wherein, the reactor core lower plate is attached by the way of cold charge pin with the lower part inner flange.
Wherein, surrounding is provided with multiple radial positioning keyways on the outside of the inner flange of lower part, the multiple radial positioning keyway with Radial support key on reactor pressure vessel cylinder matches.
Wherein, the upper support flange, top cylinder, lower cylinder, middle part supported flange, lower part inner flange and heap Core lower plate is all made of stainless steel material and is made.
Implement the present invention, have it is following the utility model has the advantages that
Novel core barrel structure provided by the invention, uses stainless steel material, and various components structure is simple, and connects Mode is secured;
Due to being provided with multiple rows of discharge orifice in cradle cylinder body, it is indoor epicoele can be effectively reduced in hoisting process Transverse flow, it is possible to reduce lateral load and frictional force between control rod and guide cylinder can be reduced, be conducive to control rod realization Linear scram;
Increase intermediate supported flange in cradle cylinder body middle position, pressing force can be provided for other component;
Using mechanical connection between cradle cylinder body and reactor core lower plate, while reactor core lower plate being made to take into account manhole plate effect, without in addition opening If manhole.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art To obtain other drawings based on these drawings.
Fig. 1 is a kind of cross-sectional view of one embodiment of novel core barrel structure provided by the invention;
Fig. 2 is part A lower part inner flange and board fixing structure schematic diagram under reactor core in one embodiment of Fig. 1;
Fig. 3 is the structural schematic diagram that part A lower part inner flange and reactor core lower plate are fixed in another embodiment of Fig. 1.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, being a kind of cross-sectional view of one embodiment of novel core barrel structure provided by the invention;Together As shown in connection with fig. 2.In this embodiment, the novel core barrel structure is at least wrapping in the pressure vessel of presurized water reactor Upper support flange 1, top cylinder 2, lower cylinder 4, middle part supported flange 3, lower part inner flange 6 and reactor core lower plate 5 are included, In:
At least provided with lifting advances through hole 10, the step 11 for installing holddown spring and cold on the upper support flange 1 But discharge orifice 12;
The top cylinder 2 is fixed with 1 phase of upper support flange, provided circumferentially about has multilayer discharge orifice 20 at its;
The lower cylinder 4 is mutually fixed with 2 bottom end of top cylinder;
Middle part supported flange 3 is set between top cylinder 2 and lower cylinder 4, and middle part supported flange is mainly used for providing compression Power compresses the components being located on the downside of it;
The upper end of the lower part inner flange 6 and the bottom end of the lower cylinder 4 are mutually fixed;
Inner flange 6 upper surface in lower part is provided with bearing step 60, and reactor core lower plate 5 is placed on the bearing step 60 and and inner flange 6 phases are fixed.
Wherein, upper support flange 1 and the upper end of the top cylinder 2 are mutually fixed by welding manner, in the lower part The upper end of flange 6 and the lower end of the lower cylinder 4 are mutually fixed by welding manner;
It is attached between the reactor core lower plate 5 and lower part inner flange 6 using mechanical system (such as bolt 7).
Further, multiple radial positioning keyways 61, the multiple radial positioning are provided in 6 outside surrounding of lower part inner flange Keyway 61 is matched with the radial support key 9 on reactor pressure vessel cylinder, to realize the positioning centering of hanging basket installation, simultaneously Secondary supporting role is provided under the accident that hanging basket is broken.
Wherein, the upper support flange 1, top cylinder 2, lower cylinder 4, middle part supported flange 3, lower part inner flange 6 And reactor core lower plate 5 is all made of stainless steel material and is made.Specifically, in one example, the upper support flange 1 can be by Stainless steel forgings are processed into, and the top cylinder 2 and lower cylinder 4 can be formed by stainless steel plate is coiling welded, the middle part pressure Tight flange 3 can be made of stainless steel forgings, to improve intensity.Lower part inner flange 6 can also be made of stainless steel forgings.
It is understood that in the present embodiment, it is uniformly provided with multilayer discharge orifice 20 on the top cylinder 2, from And the concentration discharge orifice in traditional hanging basket component is substituted, it can export to avoid concentrating because of transverse flow caused by suction;On the one hand The transversely acting load to control rod guide tubes and bundles component can be reduced, avoids bending;On the other hand guide cylinder can be reduced Exit transverse flow is to the transversely acting of control rod, and frictional force between caused control rod and guide cylinder falls conducive to control rod Stick.
As shown in figure 3, showing the knot that part A lower part inner flange and reactor core lower plate are fixed in another embodiment of Fig. 1 Structure schematic diagram.In this embodiment, it is with the difference of Fig. 2, is adopted between the reactor core lower plate 5 and the lower part inner flange 6 It is attached with the mode of cold charge pin 8.Using this connection type, reactor core lower plate 5 can be made to also serve as the function of manhole plate, specifically Ground, as long as taking out all cold charge pins 8, so that it may reactor core lower plate 5 is easily opened, to form one in the bottom of hanging basket Manhole.
Implement the present invention, have it is following the utility model has the advantages that
Novel core barrel structure provided by the invention, uses stainless steel material, and various components structure is simple, and connects Mode is secured;
Due to being provided with multiple rows of discharge orifice in cradle cylinder body, it is indoor epicoele can be effectively reduced in hoisting process Transverse flow, it is possible to reduce lateral load and frictional force between control rod and guide cylinder can be reduced, be conducive to control rod realization Linear scram;
Increase intermediate supported flange in cradle cylinder body middle position, pressing force can be provided for other component;
Using mechanical connection between cradle cylinder body and reactor core lower plate, while reactor core lower plate being made to take into account manhole plate effect, without in addition opening If manhole.
Above disclosed is only a preferred embodiment of the present invention, cannot limit the power of the present invention with this certainly Sharp range, therefore equivalent changes made in accordance with the claims of the present invention, are still within the scope of the present invention.

Claims (8)

1. a kind of novel core barrel structure, in the pressure vessel of presurized water reactor, which is characterized in that it includes at least top branch Hold flange (1), top cylinder (2), lower cylinder (4), lower part inner flange (6) and reactor core lower plate (5), in which:
At least provided with hole for hoist (10) on the upper support flange (1);
The top cylinder (2) is mutually fixed with the upper support flange (1), provided circumferentially about has multilayer discharge orifice at its (20);
The lower cylinder (4) is mutually fixed with top cylinder (2) bottom end;
The upper end of the lower part inner flange (6) and the bottom end of the lower cylinder (4) are mutually fixed;
Lower part inner flange (6) upper surface is provided with bearing step (60), and reactor core lower plate (5) is placed on the bearing step (60) simultaneously It is mutually fixed with lower part inner flange (6).
2. structure as described in claim 1, which is characterized in that upper support flange (1) upper surface is further provided with For installing step (11) and the cooling discharge orifice 12 of holddown spring.
3. structure as described in claim 1, which is characterized in that in being provided between top cylinder (2) and lower cylinder (4) Portion's supported flange (3).
4. structure as claimed in claim 3, which is characterized in that the upper end of upper support flange (1) and the top cylinder (2) It is mutually fixed by welding manner, the upper end of the lower part inner flange (6) and the lower end of the lower cylinder (4) pass through welding manner It is mutually fixed.
5. structure as claimed in claim 4, which is characterized in that used between the reactor core lower plate (5) and lower part inner flange (6) Mechanical system is attached.
6. structure as claimed in claim 4, which is characterized in that between the reactor core lower plate (5) and the lower part inner flange (6) It is attached by the way of cold charge pin (8).
7. such as structure described in claim 5 or 6, which is characterized in that in lower part, surrounding is provided with multiple radial directions on the outside of inner flange (6) Positioning spline (61), the multiple radial positioning keyway (61) and radial support key (9) phase on reactor pressure vessel cylinder Cooperation.
8. structure as claimed in claim 7, which is characterized in that the upper support flange (1), top cylinder (2), lower sleeve Body (4), middle part supported flange (3), lower part inner flange (6) and reactor core lower plate (5) are all made of stainless steel material and are made.
CN201810803222.5A 2018-07-20 2018-07-20 A kind of novel core barrel structure Pending CN109036593A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810803222.5A CN109036593A (en) 2018-07-20 2018-07-20 A kind of novel core barrel structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810803222.5A CN109036593A (en) 2018-07-20 2018-07-20 A kind of novel core barrel structure

Publications (1)

Publication Number Publication Date
CN109036593A true CN109036593A (en) 2018-12-18

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110767337A (en) * 2019-10-29 2020-02-07 中国原子能科学研究院 Flange connection structure

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0160603A1 (en) * 1984-04-11 1985-11-06 Novatome Plug closure for a fast neutron nuclear reactor core
JPH09281267A (en) * 1996-04-10 1997-10-31 Ishikawajima Harima Heavy Ind Co Ltd Reactor pressure vessel
JP2005338097A (en) * 2005-07-05 2005-12-08 Toshiba Corp Repair device and machining device for structure
CN1917095A (en) * 2005-08-19 2007-02-21 中国核动力研究设计院 Shell type reactor in normal presure and low temperature
CN102842347A (en) * 2012-10-08 2012-12-26 中国核工业华兴建设有限公司 Special testing device for small measuring chamber of nuclear power plant reactor cavity
CN103106931A (en) * 2013-02-04 2013-05-15 中国核动力研究设计院 Reactor internal suitable for supercritical water-cooled reactor two-flow core
CN103106932A (en) * 2013-02-04 2013-05-15 中国核动力研究设计院 Flow-concentrating type two-flow super-critical water-cooled reactor
CN103474104A (en) * 2012-06-08 2013-12-25 中国核动力研究设计院 Split-type integral pressurized water reactor with down-suspended basket
CN105957560A (en) * 2016-07-05 2016-09-21 上海核工程研究设计院 Reactor body structure of reactor of pressurized water reactor nuclear power plant
CN207124043U (en) * 2017-07-26 2018-03-20 四川大学 Reactor coolant presses down whirlpool and flow distribution device and reactor core internals
CN108062985A (en) * 2017-12-28 2018-05-22 中广核研究院有限公司 For the pressure vessel of reactor
CN108257686A (en) * 2017-12-28 2018-07-06 中广核研究院有限公司 Reactor, reactor main equipment and the water proof ring for reactor main equipment
CN208873480U (en) * 2018-07-20 2019-05-17 中广核研究院有限公司 A kind of novel core barrel structure

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0160603A1 (en) * 1984-04-11 1985-11-06 Novatome Plug closure for a fast neutron nuclear reactor core
JPH09281267A (en) * 1996-04-10 1997-10-31 Ishikawajima Harima Heavy Ind Co Ltd Reactor pressure vessel
JP2005338097A (en) * 2005-07-05 2005-12-08 Toshiba Corp Repair device and machining device for structure
CN1917095A (en) * 2005-08-19 2007-02-21 中国核动力研究设计院 Shell type reactor in normal presure and low temperature
CN103474104A (en) * 2012-06-08 2013-12-25 中国核动力研究设计院 Split-type integral pressurized water reactor with down-suspended basket
CN102842347A (en) * 2012-10-08 2012-12-26 中国核工业华兴建设有限公司 Special testing device for small measuring chamber of nuclear power plant reactor cavity
CN103106932A (en) * 2013-02-04 2013-05-15 中国核动力研究设计院 Flow-concentrating type two-flow super-critical water-cooled reactor
CN103106931A (en) * 2013-02-04 2013-05-15 中国核动力研究设计院 Reactor internal suitable for supercritical water-cooled reactor two-flow core
CN105957560A (en) * 2016-07-05 2016-09-21 上海核工程研究设计院 Reactor body structure of reactor of pressurized water reactor nuclear power plant
CN207124043U (en) * 2017-07-26 2018-03-20 四川大学 Reactor coolant presses down whirlpool and flow distribution device and reactor core internals
CN108062985A (en) * 2017-12-28 2018-05-22 中广核研究院有限公司 For the pressure vessel of reactor
CN108257686A (en) * 2017-12-28 2018-07-06 中广核研究院有限公司 Reactor, reactor main equipment and the water proof ring for reactor main equipment
CN208873480U (en) * 2018-07-20 2019-05-17 中广核研究院有限公司 A kind of novel core barrel structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110767337A (en) * 2019-10-29 2020-02-07 中国原子能科学研究院 Flange connection structure
CN110767337B (en) * 2019-10-29 2021-08-20 中国原子能科学研究院 Flange connection structure

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