CN203026147U - Lower reactor core board for controlling deformation - Google Patents
Lower reactor core board for controlling deformation Download PDFInfo
- Publication number
- CN203026147U CN203026147U CN2012207347067U CN201220734706U CN203026147U CN 203026147 U CN203026147 U CN 203026147U CN 2012207347067 U CN2012207347067 U CN 2012207347067U CN 201220734706 U CN201220734706 U CN 201220734706U CN 203026147 U CN203026147 U CN 203026147U
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- China
- Prior art keywords
- core plate
- lower core
- reactor core
- hole
- core board
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- 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.)
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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 the technical field of nuclear power, and in particular discloses a lower reactor core board for controlling deformation. The lower reactor core board is a round board which is provided with coolant runner holes, wherein every four coolant runner holes are form a group, and the quantity of the coolant runner holes is consist with the quantity of reactor core fuel components; and a stress relief hole which is a counter bore that is 100-120mm deep is machined at the outer side of the circumference of the lower surface of the lower reactor core board. Through the stress relief hole in the back surface, the lower reactor core board can eliminate processing stress of the lower reactor core board in manufacturing process and prevent deformation; the lower reactor core board is provided with the coolant runner holes which are corresponding to the arrangement of the flue components and is provided with an aligning hole for the lower reactor core board and an upper reactor core board, so as to meet process demand of cooling the coolant in a running manner and to satisfy the requirement of aligning the lower reactor core board and the upper reactor core board, therefore, the lower reactor core board can be precisely and reliably mounted.
Description
Technical field
The utility model belongs to the nuclear power technology field, is specifically related to a kind of lower core plate of hanging basket assembly.
Background technology
Hanging basket assembly in pressurized water nuclear reactor, be affected by temperature effect, irradiation effect affects, thermal (temperature difference) stress affects, stream causes the most serious assembly of vibration effect.
Lower core plate is the important component part of hanging basket assembly, and lower core plate provides location and supporting for fuel assembly.Current, the lower core plate that the home and abroad nuclear power is commonly used all adopts lower core plate-core support plate's fabricated structure, as shown in Figure 1, by uniform bolt 2 and register pin 5 on lower core plate edge, lower core plate 1 is fixed on the lower core plate sustained ring 6 of cradle cylinder body 3 inside.Lower core plate 1 has been born all load that applied by fuel assembly.By lower core plate sustained ring 6 and reactor core support column 7, load is passed to core support plate 4 and cradle cylinder body 3, wherein, core support plate 4 and cradle cylinder body 3 are for being welded to connect.
In prior art, lower core plate links together by the reactor core support column with core support plate, this time core plate by register pin be bolted on sustained ring, above-mentioned total is fixed by welding in cradle cylinder body.Its shortcoming is, sustained ring and core support plate still adopt with the connected mode of hanging basket respectively and be welded to connect, and being welded to connect between it is difficult to control deformation, and anti-between threaded connector shakes, endurance, resistance to ag(e)ing are poor, and structure is very complicated, and economy is also poor.
Summary of the invention
The purpose of this utility model is to provide a kind of lower core plate of controlling deformation, the whole comparatively complicated structure that it replaces original core support plate, sustained ring, support column and original lower core plate to form, and the variation by structure, make it be connected from welding the interference that becomes pin with the connected mode of cradle cylinder body with bolt and connect, thus the purpose of core plate deformation under controlling.
Realize that the technical solution of the utility model is as follows:
A kind of lower core plate of controlling deformation, described lower core plate is circular slab, and plate is provided with the coolant flow passages hole, and four, described coolant flow passages hole is one group, and the quantity in coolant flow passages hole is consistent with the reactor fuel component count; The lower surface of described lower core plate is processed with periphery and is processed with the stress-removal hole, and it is counterbore, and hole depth is 100～120mm.
In the lower core plate of above-mentioned control deformation, in every group the coolant flow passages hole in described coolant flow passages hole, a side in relative two coolant flow passages holes is provided with the blind hole I that is connected.
In the lower core plate of above-mentioned control deformation, evenly be provided with mesopore on the center of described lower core plate and circumference.
In the lower core plate of above-mentioned control deformation, be processed with the blind hole II that is connected on the side of lower core plate.
In the lower core plate of above-mentioned control deformation, the lower surface of described lower core plate is flange, and flange is provided with the connection pin-and-hole that is connected with cradle cylinder body for it.
In the lower core plate of above-mentioned control deformation, the edge of described lower core plate upper surface evenly is provided with the locating blind hole.
In the lower core plate of above-mentioned control deformation, the aperture in described stress-removal hole is 1/20 of lower core plate diameter.
The obtained beneficial effect of the utility model is as follows: have the stress-removal hole at the lower core plate back side, can eliminate the machining stress of lower core plate in manufacture process, prevent deformation; Have on lower core plate with fuel assembly and arrange corresponding coolant flow passages hole, have simultaneously for lower core plate and upper core plate to mesopore, satisfied the cooling technological requirement of ANALYSIS OF COOLANT FLOW, simultaneously also satisfy time core plate and the requirement of upper core plate centering, made installation more accurately reliable; Be processed as in lower core plate design four locating blind holes that forming board is installed simultaneously, satisfied the requirement that the post forming plate is installed; In addition, the design of the blind hole that is connected has been satisfied the cooperation of time core plate and cradle cylinder body and fuel assembly register pin and has been installed, it is installed more accurately reliable, be evenly equipped with simultaneously to connect on flange and use the technique unthreaded hole, make lower core plate and cradle cylinder body realize that interference is connected, install more solid and reliable.
Description of drawings
Fig. 1 is lower core plate and cradle cylinder body connection diagram in prior art;
Fig. 2 is lower core plate schematic diagram of the present utility model;
Fig. 3 is the vertical view of Fig. 2;
Fig. 4 is the upward view of Fig. 2;
In figure: 1. descend core plate; 2. bolt; 3. cradle cylinder body; 4. core support plate; 5. register pin; 6. descend the core plate sustained ring; 7. reactor core support column; 8. to mesopore; 9. locating blind hole; 10. coolant flow passages hole; The blind hole I 11. be connected; 12. stress-removal hole; The blind hole II 13. be connected; 14. connection pin-and-hole.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
As shown in Figures 2 and 3, lower core plate 1 adopts the solid forging manufacturing, is circular slab, and thickness of slab is that optimum is got 300mm.On plate, processing is used for the coolant flow passages hole 10 of cooling fuel assembly, and described coolant flow passages hole 10 is through hole.
Lower surface at circular slab is processed with flange, is processed with the connection pin-and-hole 14 that is connected with cradle cylinder body 2 for it on flange, and lower core plate is connected with the cradle cylinder body interference, makes lower core plate 1 be arranged on bottom cradle cylinder body.
For with other associated components (as the forming board) location and installation in the hanging basket assembly on lower core plate, even four forming boards of processing locating blind hole 9 of installing at the edge of lower core plate upper surface.
Be processed with the blind hole II 13 that is connected on the side of lower core plate 1, be used for the installation that coordinates with cradle cylinder body.
As shown in Figure 3, for lower core plate and upper core plate are carried out centering, evenly be processed with 5 to mesopore 8 on the center of lower core plate and circumference.
Fig. 3 has provided the layout in coolant flow passages hole 10, and every four coolant flow passages holes 10 are one group of corresponding group fuel assembly, and quantity is consistent with the reactor fuel component count.
As shown in Figure 3, in 4 every group coolant flow passages holes 10, be processed with respectively the blind hole I 11 that is connected on the limit in relative two coolant flow passages holes 10, thereby can coordinate with the fuel assembly register pin installation.
As shown in Figure 4, in order to eliminate the machining stress of lower core plate in manufacture process, be processed with periphery at the lower surface of lower core plate 1 and be processed with stress-removal hole 12, it is counterbore, and hole depth is 100～120mm, is 105mm in this enforcement.Stress-removal hole 12 is evenly arranged in the circumference of lower core plate 1, and the aperture is 1/20 of lower core plate 1 diameter.
Lower core plate adopts solid forging, is circular slab, and its plate external diameter is definite according to the cradle cylinder body internal diameter, and its thickness is 300mm.On lower core plate, be processed with coolant flow passages hole 10, the position in hole is corresponding with the fuel assembly position, and other hole is the stress equilibrium hole, the pilot hole with fabrication hole and fuel is installed.
The location of the location of lower core plate and cradle cylinder body, lower core plate and fuel assembly all adopts the gapless interference with compatibility to be connected.
Being processed by solid forging of lower core plate, at first blank passes through solution treatment, and after roughing, stress-removal is processed, and these measures all have the effect of controlling deformation.
Obviously, those skilled in the art can carry out various changes and modification and not break away from spirit and scope of the present utility model the utility model.If these are revised and within modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model also is intended to comprise these changes and modification interior.
Claims (7)
1. lower core plate of controlling deformation, it is characterized in that: described lower core plate is circular slab, plate is provided with coolant flow passages hole (10), and (10) four, described coolant flow passages hole is one group, and the quantity in coolant flow passages hole (10) is consistent with the reactor fuel component count; The lower surface of described lower core plate is processed with periphery and is processed with stress-removal hole (12), and it is counterbore, and hole depth is 100～120mm.
2. the lower core plate of control deformation as claimed in claim 1, it is characterized in that: in 4 the every group coolant flow passages holes (10) in described coolant flow passages hole (10), a side in relative two coolant flow passages holes (10) is provided with the blind hole I (11) that is connected.
3. the lower core plate of control deformation as claimed in claim 1, is characterized in that: evenly be provided with on the center of described lower core plate and circumference mesopore (8).
4. the lower core plate of control deformation as claimed in claim 1, is characterized in that: be processed with the blind hole II (13) that is connected on the side of described lower core plate.
5. the lower core plate of control deformation as claimed in claim 1, it is characterized in that: the lower surface of described lower core plate is flange, flange is provided with the connection pin-and-hole (14) that is connected with cradle cylinder body for it.
6. the lower core plate of control deformation as claimed in claim 1, it is characterized in that: the edge of described lower core plate upper surface evenly is provided with locating blind hole (9).
7. the lower core plate of control deformation as claimed in claim 1, it is characterized in that: the aperture in described stress-removal hole (12) is 1/20 of lower core plate 1 diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207347067U CN203026147U (en) | 2012-12-28 | 2012-12-28 | Lower reactor core board for controlling deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207347067U CN203026147U (en) | 2012-12-28 | 2012-12-28 | Lower reactor core board for controlling deformation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203026147U true CN203026147U (en) | 2013-06-26 |
Family
ID=48650113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207347067U Expired - Lifetime CN203026147U (en) | 2012-12-28 | 2012-12-28 | Lower reactor core board for controlling deformation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203026147U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105895177A (en) * | 2015-02-17 | 2016-08-24 | 株式会社东芝 | Method for manufacturing core barrel and core barrel |
-
2012
- 2012-12-28 CN CN2012207347067U patent/CN203026147U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105895177A (en) * | 2015-02-17 | 2016-08-24 | 株式会社东芝 | Method for manufacturing core barrel and core barrel |
| US10286494B2 (en) | 2015-02-17 | 2019-05-14 | Kabushiki Kaisha Toshiba | Method for manufacturing core barrel and core barrel |
| CN105895177B (en) * | 2015-02-17 | 2019-08-20 | 株式会社东芝 | The manufacturing method and core barrel of core barrel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130626 |
|
| CX01 | Expiry of patent term |