CN104240773B - Open-celled structure on reactor pressure vessel convex head - Google Patents
Open-celled structure on reactor pressure vessel convex head Download PDFInfo
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- CN104240773B CN104240773B CN201410476964.3A CN201410476964A CN104240773B CN 104240773 B CN104240773 B CN 104240773B CN 201410476964 A CN201410476964 A CN 201410476964A CN 104240773 B CN104240773 B CN 104240773B
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- hole
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- interference fit
- middle interference
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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 invention discloses planting the open-celled structure on reactor pressure vessel convex head, it is divided into 3 sections, it is respectively upper seam section through hole, middle interference fit section through hole, lower seam section through hole, the upper surface of the lower surface diameter of upper seam section through hole and lower seam section through hole is with diameter greater than the diameter of middle interference fit section through hole, this can reduce the difficulty of processing of perforate, improves the machining accuracy of middle interference fit section through hole.
Description
Technical field
The invention belongs to reactor pressure vessel convex head technical field, specially reactor pressure vessel convex head
On open-celled structure.
Background technology
Reactor pressure vessel convex head（Including upper low head）On typically require as reactor control and measurement assembly
In the passage providing in entrance heap.Corresponding perforate should be carried out therefore when convex head designs, and penetration piece is set, to be formed
Above-mentioned passage.
Penetration piece and convex head need to carry out encapsulation process, and the requirement on machining accuracy of this device to hole is higher, needs penetration piece
Outer wall is closely connected with through-hole wall.Traditional open-celled structure on existing convex head is through-hole form, that is, in the range of overall length
Diameter is consistent.The axis out of plumb in the upper and lower end face of through hole and hole, and aperture bottom also need to prepare for partial-penetration weld Ni-based
Pre- heap, this makes troubles to the processing in hole.In addition, in interference fit, the discontinuity that penetration piece is circumferentially gone up, it is unfavorable for
Ensure the perpendicularity of penetration piece.
Content of the invention
Present invention design is intended to design a kind of new open-celled structure, solves the difficulty of processing of perforate and penetration piece interference is joined
The problem of circumferential unbalance stress during conjunction.
The implementation of the present invention is as follows：Open-celled structure on reactor pressure vessel convex head, including running through reaction
The penetration piece installation through-hole of core pressure vessel convex head, penetration piece installation through-hole is through hole straight down, and penetration piece is installed
Upper seam section through hole that through hole includes being sequentially communicated from top to bottom, middle interference fit section through hole, lower seam section through hole, Ni-based pre-
Heap through hole, wherein, middle interference fit section through hole is the consistent through hole of overall length scope interior diameter, in the non-central portion of convex end socket
Separately during hole：The upper surface of upper seam section through hole becomes the folder less than 90 degree with the above-below direction axis of middle interference fit section through hole
Angle, the lower surface of upper seam section through hole becomes 90 degree of angle, lower seam with the above-below direction axis of middle interference fit section through hole
The upper surface of Duan Tongkong becomes 90 degree of angle with the above-below direction axis of middle interference fit section through hole, under lower seam section through hole
End face becomes the angle less than 90 degree with the above-below direction axis of middle interference fit section through hole；The lower surface of upper seam section through hole is straight
The upper surface of footpath and lower seam section through hole is with diameter greater than the diameter of middle interference fit section through hole；In convex end socket central part separately
Kong Shi：The upper surface of upper seam section through hole becomes 90 degree of angle with the above-below direction axis of middle interference fit section through hole, above only
The lower surface of mouth section through hole becomes 90 degree of angle with the above-below direction axis of middle interference fit section through hole, lower seam section through hole
Upper surface becomes 90 degree of angle with the above-below direction axis of middle interference fit section through hole, the lower surface of lower seam section through hole with
Between the above-below direction axis of interference fit section through hole become 90 degree of angle.
The design principle of the present invention is：Open-celled structure on reactor pressure vessel convex head is divided into 3 sections, respectively
Upper seam section through hole, middle interference fit section through hole, lower seam section through hole, the lower surface diameter of upper seam section through hole and lower only
With diameter greater than the diameter of middle interference fit section through hole, this can reduce the difficulty of processing of perforate, carry for the upper surface of mouth section through hole
The machining accuracy of interference fit section through hole between senior middle school.In addition, the upper and lower end face of middle interference fit section through hole is perpendicular to opening axis
Line, this can ensure that penetration piece install on convex head after uniformity from circumference to stress.Middle interference fit section through hole is
Penetration piece and the mating part of convex head.
End socket due to reactor pressure vessel is convex head, therefore, from convex head during non-summit perforate, can make
Become scenario described below：The upper surface of upper seam section through hole is become less than 90 degree with the above-below direction axis of middle interference fit section through hole
Angle, the lower surface of upper seam section through hole becomes 90 degree of angle with the above-below direction axis of middle interference fit section through hole, down only
The upper surface of mouth section through hole becomes 90 degree of angle with the above-below direction axis of middle interference fit section through hole, lower seam section through hole
Lower surface becomes the angle less than 90 degree with the above-below direction axis of middle interference fit section through hole.
Ni-based pre- heap through-hole wall is provided with Ni-based pre- stack layers, the lower surface of Ni-based pre- heap through hole and middle interference fit section
The above-below direction axis of through hole becomes the angle less than 90 degree.It is easy to form uniformly Ni-based pre- stack layers.
The lower surface of upper seam section through hole is less than upper surface minimum point 0.5 mm to 1mm of upper seam section through hole, so that on
The processing of seam section through hole.
The upper surface of lower seam section through hole is higher than peak 0.5 mm to 1mm of Ni-based pre- heap through hole, so that lower seam section
The processing of through hole.
The cross section minimum dimension of Ni-based pre- heap through hole is equal to the upper surface cross sectional dimensions of lower seam section through hole, adds nickel
Ni-based pre- heap through hole after the pre- stack layers of base is the Ni-based pre- heap through hole of liner, cross section minimum dimension of the Ni-based pre- heap through hole of liner etc.
Upper surface cross sectional dimensions in lower seam section through hole.
It is an advantage of the current invention that：The difficulty of processing of perforate can be reduced, improve the processing of middle interference fit section through hole
Precision.In addition, the upper and lower end face of middle interference fit section through hole is perpendicular to bore axis, this can ensure that penetration piece seals in convex
After installing on head, circumference is to the uniformity of stress.
Brief description
Fig. 1 is the cross-sectional of the present invention.
The label of in figure is expressed as：1- reactor pressure vessel convex head；2- penetration piece installation through-hole；On 3- only
Mouth section through hole；Interference fit section through hole in the middle of 4-；Seam section through hole under 5-；The Ni-based pre- heap through hole of 6-.
Specific embodiment
Embodiment one
As shown in Figure 1.
Open-celled structure on reactor pressure vessel convex head, including running through reactor pressure vessel convex head 1
Penetration piece installation through-hole 2, penetration piece installation through-hole 2 be through hole straight down it is characterised in that：Penetration piece installation through-hole 2 wraps
Include the upper seam section through hole 3 being sequentially communicated from top to bottom, middle interference fit section through hole 4, lower seam section through hole 5, Ni-based pre- heap
Through hole 6, wherein, middle interference fit section through hole 4 is the consistent through hole of overall length scope interior diameter, in the non-central portion of convex end socket
Separately during hole：The upper surface of upper seam section through hole 3 is become less than 90 degree with the above-below direction axis of middle interference fit section through hole 4
Angle, the lower surface of upper seam section through hole 3 becomes 90 degree of angle with the above-below direction axis of middle interference fit section through hole 4, under
The upper surface of seam section through hole 5 becomes 90 degree of angle with the above-below direction axis of middle interference fit section through hole 4, and lower seam section is led to
The lower surface in hole 5 becomes the angle less than 90 degree with the above-below direction axis of middle interference fit section through hole 4；Upper seam section through hole 3
Lower surface diameter and lower seam section through hole 5 upper surface with diameter greater than middle interference fit section through hole 4 diameter.In convex envelope
During head core perforate：The upper surface of upper seam section through hole 3 becomes 90 with the above-below direction axis of middle interference fit section through hole 4
The angle of degree, the lower surface of upper seam section through hole 3 becomes 90 degree of folder with the above-below direction axis of middle interference fit section through hole 4
Angle, the upper surface of lower seam section through hole 5 becomes 90 degree of angle with the above-below direction axis of middle interference fit section through hole 4, down only
The lower surface of mouth section through hole 5 becomes 90 degree of angle with the above-below direction axis of middle interference fit section through hole 4.
The design principle of the present invention is：Open-celled structure on reactor pressure vessel convex head is divided into 3 sections, respectively
Upper seam section through hole 3, middle interference fit section through hole 4, lower seam section through hole 5, the lower surface diameter of upper seam section through hole 3 and
With diameter greater than the diameter of middle interference fit section through hole 4, this can reduce the difficult processing of perforate for the upper surface of lower seam section through hole 5
Degree, improves the machining accuracy of middle interference fit section through hole 4.In addition, the upper and lower end face of middle interference fit section through hole 4 perpendicular to
Bore axis, this can ensure that penetration piece installs the uniformity to stress for the Later Zhou Dynasty, one of the Five Dynasties on convex head.Middle interference fit section is led to
Hole 4 is the mating part of penetration piece and convex head.
End socket due to reactor pressure vessel is convex head 1, therefore, from convex head 1 during non-summit perforate, meeting
Cause scenario described below：The upper surface of upper seam section through hole 3 becomes to be less than 90 with the above-below direction axis of middle interference fit section through hole 4
The angle of degree, the lower surface of upper seam section through hole 3 becomes 90 degree of folder with the above-below direction axis of middle interference fit section through hole 4
Angle, the upper surface of lower seam section through hole 5 becomes 90 degree of angle with the above-below direction axis of middle interference fit section through hole 4, down only
The lower surface of mouth section through hole 5 becomes the angle less than 90 degree with the above-below direction axis of middle interference fit section through hole 4.
Preferably, the lower surface of upper seam section through hole 3 be less than upper seam section through hole 3 upper surface minimum point 0.5 mm extremely
1mm, so that the processing of upper seam section through hole.
The upper surface of lower seam section through hole is higher than peak 0.5 mm to 1mm of Ni-based pre- heap through hole, so that lower seam section
The processing of through hole.
The cross section minimum dimension of Ni-based pre- heap through hole 6 is equal to the upper surface cross sectional dimensions of lower seam section through hole 5, adds
Ni-based pre- heap through hole 6 after Ni-based pre- stack layers is the Ni-based pre- heap through hole of liner, the cross section minimum chi of the Ni-based pre- heap through hole of liner
The very little upper surface cross sectional dimensions equal to lower seam section through hole 5.
It is an advantage of the current invention that：The difficulty of processing of perforate can be reduced, improve the processing of middle interference fit section through hole 4
Precision.In addition, the upper and lower end face of middle interference fit section through hole 4 is perpendicular to bore axis, this can ensure that penetration piece in convex
After installing on end socket, circumference is to the uniformity of stress.
As described above, the present invention then can be realized well.
Claims (5)
1. the open-celled structure on reactor pressure vessel convex head, including running through reactor pressure vessel convex head（1）'s
Penetration piece installation through-hole（2）, penetration piece installation through-hole（2）Through hole straight down it is characterised in that：Penetration piece installation through-hole
（2）Including the upper seam section through hole being sequentially communicated from top to bottom（3）, middle interference fit section through hole（4）, lower seam section through hole
（5）, Ni-based pre- heap through hole（6）, wherein, middle interference fit section through hole（4）For the through hole that overall length scope interior diameter is consistent；?
During the non-central part open of convex end socket：Upper seam section through hole（3）Lower surface diameter and lower seam section through hole（5）Upper surface
With diameter greater than middle interference fit section through hole（4）Diameter, upper seam section through hole（3）Upper surface lead to middle interference fit section
Hole（4）Above-below direction axis become less than 90 degree of angle, upper seam section through hole（3）Lower surface lead to middle interference fit section
Hole（4）Above-below direction axis become 90 degree of angle, lower seam section through hole（5）Upper surface and middle interference fit section through hole
（4）Above-below direction axis become 90 degree of angle, lower seam section through hole（5）Lower surface and middle interference fit section through hole（4）
Above-below direction axis become less than 90 degree of angle；In convex end socket core perforate：Upper seam section through hole（3）Upper end
Face and middle interference fit section through hole（4）Above-below direction axis become 90 degree of angle, upper seam section through hole（3）Lower surface with
Middle interference fit section through hole（4）Above-below direction axis become 90 degree of angle, lower seam section through hole（5）Upper surface with middle
Interference fit section through hole（4）Above-below direction axis become 90 degree of angle, lower seam section through hole（5）Lower surface and middle interference
Cooperation section through hole（4）Above-below direction axis become 90 degree of angle.
2. the open-celled structure on reactor pressure vessel convex head according to claim 1 it is characterised in that：Ni-based pre-
Heap through hole（6）Inwall is provided with Ni-based pre- stack layers, Ni-based pre- heap through hole（6）Lower surface and middle interference fit section through hole（4）
Above-below direction axis become less than 90 degree of angle.
3. the open-celled structure on reactor pressure vessel convex head according to claim 1 it is characterised in that：Upper seam
Duan Tongkong（3）Lower surface be less than upper seam section through hole（3）Upper surface minimum point 0.5 mm to 1mm.
4. the open-celled structure on reactor pressure vessel convex head according to claim 2 it is characterised in that：Lower seam
Duan Tongkong（5）Upper surface be higher than Ni-based pre- heap through hole（6）Peak 0.5 mm to 1mm.
5. the open-celled structure on reactor pressure vessel convex head according to claim 4 it is characterised in that：Ni-based pre-
Heap through hole（6）Cross section minimum dimension be equal to lower seam section through hole（5）Upper surface cross sectional dimensions, add Ni-based pre- stack layers
Ni-based pre- heap through hole afterwards（6）For the Ni-based pre- heap through hole of liner, the cross section minimum dimension of the Ni-based pre- heap through hole of liner is equal to down
Seam section through hole（5）Upper surface cross sectional dimensions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410476964.3A CN104240773B (en) | 2014-09-18 | 2014-09-18 | Open-celled structure on reactor pressure vessel convex head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410476964.3A CN104240773B (en) | 2014-09-18 | 2014-09-18 | Open-celled structure on reactor pressure vessel convex head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104240773A CN104240773A (en) | 2014-12-24 |
| CN104240773B true CN104240773B (en) | 2017-03-08 |
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| CN201410476964.3A Active CN104240773B (en) | 2014-09-18 | 2014-09-18 | Open-celled structure on reactor pressure vessel convex head |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6188741B1 (en) * | 1997-08-29 | 2001-02-13 | General Electric Company | Machined stub tube in a bottom head of a boiling water reactor |
| CN102737740A (en) * | 2012-06-13 | 2012-10-17 | 中国核动力研究设计院 | Guiding device of pressurized water reactor in-core instrumentation system |
| CN103366843A (en) * | 2013-07-22 | 2013-10-23 | 中国核动力研究设计院 | Guiding structure of straight inserted detector for nuclear reactor |
| CN204045216U (en) * | 2014-09-18 | 2014-12-24 | 中国核动力研究设计院 | Open-celled structure on reactor pressure vessel convex head |
-
2014
- 2014-09-18 CN CN201410476964.3A patent/CN104240773B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6188741B1 (en) * | 1997-08-29 | 2001-02-13 | General Electric Company | Machined stub tube in a bottom head of a boiling water reactor |
| CN102737740A (en) * | 2012-06-13 | 2012-10-17 | 中国核动力研究设计院 | Guiding device of pressurized water reactor in-core instrumentation system |
| CN103366843A (en) * | 2013-07-22 | 2013-10-23 | 中国核动力研究设计院 | Guiding structure of straight inserted detector for nuclear reactor |
| CN204045216U (en) * | 2014-09-18 | 2014-12-24 | 中国核动力研究设计院 | Open-celled structure on reactor pressure vessel convex head |
Non-Patent Citations (2)
| Title |
|---|
| CPR1000反应堆压力容器镍基管座贯穿件与上封头焊接质量的控制;钟本路 等;《金属加工》;20140420(第8期);论文第2-3节、附图1-3 * |
| 反应堆压力容器主要焊缝结构及特点;匡艳军 黄宗仁;《金属加工》;20081020(第20期);第21-24页 * |
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| CN104240773A (en) | 2014-12-24 |
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