CN208873480U - A kind of novel core barrel structure - Google Patents
A kind of novel core barrel structure Download PDFInfo
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- CN208873480U CN208873480U CN201821154972.6U CN201821154972U CN208873480U CN 208873480 U CN208873480 U CN 208873480U CN 201821154972 U CN201821154972 U CN 201821154972U CN 208873480 U CN208873480 U CN 208873480U
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- cylinder
- flange
- inner flange
- part inner
- mutually fixed
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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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- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The utility model 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 lifting advances through hole (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 utility model, have many advantages, such as it is simple and strong in structure, be easy to lift, conducive to scram.
Description
Technical field
The utility model 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.
Utility model content
Technical problem to be solved by the utility model is to provide a kind of novel core barrel structures, with structure
Simply securely, it is easy to lift, is conducive to the advantages that scram.
In order to solve the above technical problems, the utility model embodiment provides a kind of novel core barrel structure, for pressing water
In the pressure vessel of heap, include at least under upper support flange, top cylinder, lower cylinder, lower part inner flange and reactor core
Plate, in which:
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, reactor core lower plate be placed on the bearing step and with inner flange phase
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 utility model, have it is following the utility model has the advantages that
Novel core barrel structure provided by the utility model, uses stainless steel material, and various components structure is simple,
And connection type is secured；
Due to being provided with multiple rows of discharge orifice in cradle cylinder body, upper chamber can be effectively reduced in hoisting process
Interior 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
Realize 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, not had to another
Manhole is opened up outside.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, is also possible 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 utility model；
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
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1, being a kind of cross-sectional view of one embodiment of novel core barrel structure provided by the utility model；
Together as shown in connection with fig. 2.In this embodiment, the novel core barrel structure is used in the pressure vessel of presurized water reactor, until
It less include 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, in which:
On the upper support flange 1 at least provided with lifting advances through hole 10, for install the step 11 of holddown spring with
And cooling 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
Pressing force 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；
6 upper surface of lower part inner flange be provided with bearing step 60, reactor core lower plate 5 be placed on the bearing step 60 and with it is interior
6 phase of flange is 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
Transverse flow is exported at window to the transversely acting of control rod, the frictional force between caused control rod and guide cylinder is conducive to control
Stick scram.
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 utility model, have it is following the utility model has the advantages that
Novel core barrel structure provided by the utility model, uses stainless steel material, and various components structure is simple,
And connection type is secured；
Due to being provided with multiple rows of discharge orifice in cradle cylinder body, upper chamber can be effectively reduced in hoisting process
Interior 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
Realize 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, not had to another
Manhole is opened up outside.
Above disclosed is only a kind of preferred embodiment of the utility model, certainly cannot be practical to limit with this
Novel interest field, therefore equivalent variations made according to the claim of the utility model still belong to what the utility model was covered
Range.
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 lifting advances through hole (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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821154972.6U CN208873480U (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 |
|---|---|---|---|
| CN201821154972.6U CN208873480U (en) | 2018-07-20 | 2018-07-20 | A kind of novel core barrel structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208873480U true CN208873480U (en) | 2019-05-17 |
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ID=66463268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821154972.6U Active CN208873480U (en) | 2018-07-20 | 2018-07-20 | A kind of novel core barrel structure |
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| Country | Link |
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| CN (1) | CN208873480U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036593A (en) * | 2018-07-20 | 2018-12-18 | 中广核研究院有限公司 | A kind of novel core barrel structure |
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2018
- 2018-07-20 CN CN201821154972.6U patent/CN208873480U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036593A (en) * | 2018-07-20 | 2018-12-18 | 中广核研究院有限公司 | A kind of novel core barrel structure |
| CN109036593B (en) * | 2018-07-20 | 2024-06-11 | 中广核研究院有限公司 | Reactor core hanging basket structure |
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