CN102543225A - Crossed columnar full-travel continuous guide part of pressurized water nuclear reactor - Google Patents
Crossed columnar full-travel continuous guide part of pressurized water nuclear reactor Download PDFInfo
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- CN102543225A CN102543225A CN2010105857130A CN201010585713A CN102543225A CN 102543225 A CN102543225 A CN 102543225A CN 2010105857130 A CN2010105857130 A CN 2010105857130A CN 201010585713 A CN201010585713 A CN 201010585713A CN 102543225 A CN102543225 A CN 102543225A
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- cruciform
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- pressurized water
- water nuclear
- guide part
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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 belongs to a reactor internal of a pressurized water nuclear reactor, particularly relating to a crossed columnar full-travel continuous guide part of a pressurized water nuclear reactor for providing guidance for a control rod assembly of a reactor. Locating and bearing transitional parts, circumferential locating parts and connecting parts of the locating and bearing transitional parts and the circumferential locating parts are removed on condition that the guide part disclosed by the invention controls the ratio of the control bar travel to the control bar diameter and a transverse flowing speed of a coolant. The guide part is directly connected with the member part of the fixed guide part of the reactor. The difficulty in setting the guide part when the reactor cores are arranged in a compact manner is solved, so that the structure of the guide part is greatly simplified. A crossed columnar full-travel continuous guide part with the advantages of generality, interchangeability, simple structure, high economical efficiency, and safe and reliable use is provided for the pressurized water nuclear reactor with a compact reactor core arrangement.
Description
Technical field
The invention belongs to the pressurized water nuclear reactor in-pile component, be particularly related to a kind of pressurized water nuclear reactor cruciform pillar total travel continuous steerable spare that the reactor control rod assembly provides guiding.
Background technology
In the pressurized water nuclear reactor in-pile component, what guiding is provided for the reactor control rod assembly is the guide in the reactor core internals.The quality of guiding not only influences the smoothness of control rod assembly axially-movable, also affects the rod drop time of control rod assembly full-height position, affects the safe shutdown of reactor.Just because like this; The emphasis that is designed to reactor structure overall design concern of guide; And the version of guidance set; Closely related with the general layout of nuclear reactor, according to layout, the arrangement of control rod, quantity, the rod footpath and the ratio of stroke, the transverse flow speed of cooling medium of control rod assembly, comprehensively confirm structure, the location and fixing of guide.
In the reactor of pressurized water type dispersed placement, because the stroke of control rod assembly is bigger, and rod footpath ratio is bigger, and reactor core is furnished with bigger bulk, adopts bundled tube guidance set or cartridge type guidance set traditionally.Chinese patent " bundled tube is to whole-travel continuous star frame guiding component " like patent 200810191777.5; And for example the patent No. is 200810078679.0 Chinese patent " pressurized water nuclear reactor cartridge type riveted joint type total travel continuous steerable assembly "; These two kinds of guides; Though structure is different, be the assembly type guide, its structure is by guidance set, keeper, supporting member, circumferential keeper and web member; Composition has interchangeability, separable guidance set, again assembly is located, is fixed on reactor core upper plate and the support plate.Because assembly will occupy bigger bulk; Arrange under the compact situation at reactor core; The bulk that is provided is also little; Adopt the assembly type guiding obviously not satisfy the situation of reactor core compact Layout, under the precondition of control rod footpath ratio and cooling medium transverse flow speed, should change the structure of design concept, simplification guidance set.
Summary of the invention
The object of the present invention is to provide a kind of have shared property, interchangeability, designs simplification, good economy performance and safe and reliable pressurized water nuclear reactor cruciform pillar total travel continuous steerable spare.
Technical scheme of the present invention is following:
A kind of pressurized water nuclear reactor cruciform pillar total travel continuous steerable spare comprises locating support plate and reactor core upper plate,
It is characterized in that:Described guide is connected bottom through locating support plate connection top with the reactor core upper plate by two cruciform guideposts and forms; Every cruciform guidepost is provided with canned paragraph, guide section, positioning section; Canned paragraph inserts in the locating support plate, through the gland nut axial restraint, matches with the opening limit casing, and with the circumferential position of adjustable anti-switch block limit; Positioning section inserts in the reactor core upper plate, matches with the pilot hole of reactor core upper plate.
Its supplementary features are:
The spigot surface of said guide section is made up of cambered surface and two side planes, is the star section of left-right symmetric, front and back symmetry; Curved guiding surface and X axis symmetry, side and Y be symmetry axially, and two sides of symmetry are parallel to each other, and parallel with cambered surface X axle, and the Y axle is vertical; Upper end at spigot surface is provided with lead-in chamfered; Positioning section is by forming with the coaxial cylinder of curved guiding surface, two parallel and symmetrical with the X axle, vertical with Y axle sides; Canned paragraph by with the coaxial cylinder of curved guiding surface, double-screw bolt face and limit circumferentially the symmetrical plane of position form.
The spigot surface of said cruciform guidepost and the surfaceness of locating surface are 1.6 μ m, and the double-screw bolt surface is 3.2 μ m, and all the other are 6.3 μ m;
The guide surface of the cruciform guidepost of said guide and double-screw bolt surface be hard chrome plating all, coating hardness HB >=700; Thickness of coating: spigot surface is 0.025mm ~ 0.028mm, and the double-screw bolt surface is 0.005mm ~ 0.008mm.
The positioning limit pipe that described opening limit casing is an openable, the lower end of pipe have four grooves, through managing the adjusting in inside and outside footpath, realize the radial location to the cruciform guidepost; Cooperate adjustable anti-switch block and locating support plate, realization is circumferentially spacing to the cruciform guidepost.
Effect of the present invention is: pressurized water nuclear reactor cruciform pillar total travel continuous steerable spare of the present invention; Under the condition of control control rod stroke and control rod diameter ratio and cooling medium transverse flow speed; Location, supporting transition piece, circumferential keeper and their web member have been cancelled; The guide that will be used to lead directly is connected with the member of location, fixed guide; Directly locate, be fixed on reactor core upper plate and the support plate; Solve when reactor core is arranged compactness the guidance set problem of difficult is set, greatly simplify the structure, arrange compact nuclear reactor for pressurized water type, reactor core a kind of have shared property, interchangeability, designs simplification, good economy performance and safe and reliable cruciform pillar total travel continuous steerable spare are provided.
Description of drawings
Fig. 1 is the structural representation of cruciform pillar total travel continuous steerable spare of the present invention.
Fig. 2 is the vertical view after Fig. 1 removes gland nut.
Fig. 3 is a cruciform guidepost structural representation.
Fig. 4 is that the A of Fig. 3 is to view.
Fig. 5 is that the B of Fig. 3 is to view.
Fig. 6 is an opening limit casing structural representation.
Fig. 7 is the A-A view of Fig. 6.
Among the figure: 1. locating support plate; 2. gland nut; 3. opening limit casing; 4. adjustable anti-switch block; 5. cruciform guidepost; 6. reactor core upper plate; 7. canned paragraph; 8. guide section; 9. positioning section; 10. lead-in chamfered.
Embodiment
Like Fig. 1, shown in Figure 2, guide of the present invention is connected bottom through locating support plate 1 connection top with reactor core upper plate 6 by two cruciform guideposts 5 and forms.Distance between two cruciform guideposts 5 on cruciform guidepost 5 tops is arranged according to reactor core and single group control rod assembly starframe full-size is confirmed.Every cruciform guidepost 5 is provided with canned paragraph 7, guide section 8, positioning section 9.Canned paragraph 7 inserts in the locating support plate 1, through gland nut 2 axial restraints, matches with opening limit casing 3, and with the circumferential position of adjustable anti-switch block 4 limits.Positioning section 9 inserts in the reactor core upper plates 6, matches with the pilot hole of reactor core upper plate 6.
Like Fig. 3, Fig. 4, shown in Figure 5, the spigot surface of the guide section 8 of cruciform guidepost is made up of cambered surface and two side planes, is the star section of left-right symmetric, front and back symmetry; Curved guiding surface is in the X-direction symmetry, and the side is in the Y direction symmetry, and the side of symmetry is parallel to each other, and parallel with the cambered surface X axis, and Y is axially vertical; In the upper end of spigot surface, be provided with lead-in chamfered 10; Positioning section 9 axially is made up of two vertical sides, Y parallel with X axis and symmetrical with the coaxial cylinder of curved guiding surface; Canned paragraph 7 by with the coaxial cylinder of curved guiding surface, double-screw bolt face and limit circumferentially the symmetrical plane of position form.
The guide surface of cruciform guidepost 5 and double-screw bolt surface be hard chrome plating all, coating hardness HB >=700; Thickness of coating: spigot surface is 0.025mm ~ 0.028mm, and the double-screw bolt surface is 0.005mm ~ 0.008mm.
The surfaceness of spigot surface, locating surface is 1.6 μ m, and the double-screw bolt surface is 3.2 μ m, and all the other are 6.3 μ m.
Like Fig. 6, shown in Figure 7, opening limit casing 3 is positioning limit pipes of an openable, and the lower end of pipe has four grooves, through managing the adjusting in inside and outside footpath, realizes the radial location to cruciform guidepost 5.Have the circumferentially grooves of position of two limits on the sleeve pipe, cooperate adjustable anti-switch block 4 and locating support plate 1, realization is circumferentially spacing to cruciform guidepost 5.
Guide of the present invention with the assembling of reactor core internals in; Cruciform guidepost 5 has some groups; Two cruciform guideposts 5 are one group; Some groups of two adjacent cruciform guideposts 5 of guidepost can be each other one group, and its upper and lower connects to form a cylindrical member by same locating support plate 1 and reactor core upper plate 6 respectively.
During assembling, earlier locating support plate 1 and reactor core upper plate 6 are implemented the prepackage of corresponding aperture system, again that cruciform guidepost 5 is in place on reactor core upper plate 6; The orientation that locating support plate 1 is confirmed by prepackage is in place, confirms the orientation of reactor core upper plate 6 and locating support plate 1 with process conditions, the situation that matches of the upper surface of inspection cruciform guidepost 5 upper and lower end faces and reactor core upper plate 6, the lower surface of locating support plate 1, checks the alignment of cruciform guidepost 5 upper end cylinders and locating support plate 1; Again that opening limit casing 3 is in place on adjustable anti-switch block 4, after adjustment, the smoothness that inspection pulls and pushes; Change process conditions into product spare then; Adjustable anti-switch block 4 is implemented argon arc spot welding, tighten gland nut 2, the applying degree of inspection cruciform guidepost 5 upper surfaces and locating support plate 1 lower surface; The allowable clearance amount is less than 0.03mm; Detect the smoothness that guide whole process pulls and pushes, after meeting the demands, gland nut 2 is implemented locking argon arc spot welding.
Claims (5)
1. a pressurized water nuclear reactor cruciform pillar total travel continuous steerable spare comprises locating support plate (1) and reactor core upper plate (6),
It is characterized in that:Described guide is connected bottom through locating support plate (1) connection top with reactor core upper plate (6) by two cruciform guideposts (5) and forms; Every cruciform guidepost (5) is provided with canned paragraph (7), guide section (8), positioning section (9); Canned paragraph (7) inserts in the locating support plate (1), through gland nut (2) axial restraint, matches with opening limit casing (3), and with the circumferential position of adjustable anti-switch block (4) limit; Positioning section (9) inserts in the reactor core upper plate (6), matches with the pilot hole of reactor core upper plate (6).
2. according to the described pressurized water nuclear reactor cruciform of claim 1 pillar total travel continuous steerable spare,
It is characterized in that:The spigot surface of said guide section (8) is made up of cambered surface and two side planes, is the star section of left-right symmetric, front and back symmetry; Curved guiding surface and X axis symmetry, side and Y be symmetry axially, and two sides of symmetry are parallel to each other, and parallel with cambered surface X axle, and the Y axle is vertical; In the upper end of spigot surface, be provided with lead-in chamfered (10); Positioning section (9) is by forming with the coaxial cylinder of curved guiding surface, two parallel and symmetrical with the X axle, vertical with Y axle sides; Canned paragraph (7) by with the coaxial cylinder of curved guiding surface, double-screw bolt face and limit circumferentially the symmetrical plane of position form.
3. according to claim 1 or 2 described pressurized water nuclear reactor cruciform pillar total travel continuous steerable spares,
It is characterized in that:The spigot surface of said cruciform guidepost (5) and the surfaceness of locating surface are 1.6 m, and the double-screw bolt surface is 3.2 m, and all the other are 6.3 m.
4. pressurized water nuclear reactor cruciform pillar total travel continuous steerable spare according to claim 3 is characterized in that: the guide surface of the cruciform guidepost (5) of said guide and double-screw bolt surface be hard chrome plating all, coating hardness HB >=700; Thickness of coating: spigot surface is 0.025mm ~ 0.028mm, and the double-screw bolt surface is 0.005mm ~ 0.008mm.
5. according to the described pressurized water nuclear reactor cruciform of claim 1 pillar total travel continuous steerable spare; It is characterized in that: described opening limit casing (3) is the positioning limit pipe of an openable; The lower end of pipe has four grooves; Through managing the adjusting in inside and outside footpath, realize radial location to cruciform guidepost (5); Cooperate adjustable anti-switch block (4) and locating support plate (1), realization is circumferentially spacing to cruciform guidepost (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010585713.0A CN102543225B (en) | 2010-12-14 | 2010-12-14 | Crossed columnar full-travel continuous guide part of pressurized water nuclear reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010585713.0A CN102543225B (en) | 2010-12-14 | 2010-12-14 | Crossed columnar full-travel continuous guide part of pressurized water nuclear reactor |
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| Publication Number | Publication Date |
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| CN102543225A true CN102543225A (en) | 2012-07-04 |
| CN102543225B CN102543225B (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010585713.0A Active CN102543225B (en) | 2010-12-14 | 2010-12-14 | Crossed columnar full-travel continuous guide part of pressurized water nuclear reactor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103903656A (en) * | 2012-12-26 | 2014-07-02 | 中国核动力研究设计院 | Reactor internals of pressurized water nuclear reactor |
| CN111868837A (en) * | 2018-01-15 | 2020-10-30 | 俄罗斯国家原子能公司 | Actuating mechanism for a system for controlling and protecting a nuclear reactor |
| CN112404816A (en) * | 2020-11-10 | 2021-02-26 | 中国核动力研究设计院 | Cross-shaped workpiece assembling and welding device |
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| US4347621A (en) * | 1977-10-25 | 1982-08-31 | Environmental Institute Of Michigan | Trochoidal nuclear fusion reactor |
| CN86101773A (en) * | 1985-03-22 | 1986-09-17 | 西屋电气公司 | Nuclear reactor |
| CN1060921A (en) * | 1990-09-20 | 1992-05-06 | 法玛通公司 | The guide piece of nuclear reactor control cluster |
| JPH10186074A (en) * | 1996-12-27 | 1998-07-14 | Mitsubishi Heavy Ind Ltd | Aseismatic grid of fuel assembly for nuclear reactor, fuel assembly, and nuclear reactor core |
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2010
- 2010-12-14 CN CN201010585713.0A patent/CN102543225B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4347621A (en) * | 1977-10-25 | 1982-08-31 | Environmental Institute Of Michigan | Trochoidal nuclear fusion reactor |
| CN86101773A (en) * | 1985-03-22 | 1986-09-17 | 西屋电气公司 | Nuclear reactor |
| CN1060921A (en) * | 1990-09-20 | 1992-05-06 | 法玛通公司 | The guide piece of nuclear reactor control cluster |
| JPH10186074A (en) * | 1996-12-27 | 1998-07-14 | Mitsubishi Heavy Ind Ltd | Aseismatic grid of fuel assembly for nuclear reactor, fuel assembly, and nuclear reactor core |
Non-Patent Citations (2)
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| 朱发文 等: "一种适用于十字形控制棒的超临界燃料组件设计", 《核动力工程》 * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103903656A (en) * | 2012-12-26 | 2014-07-02 | 中国核动力研究设计院 | Reactor internals of pressurized water nuclear reactor |
| CN103903656B (en) * | 2012-12-26 | 2016-08-03 | 中国核动力研究设计院 | Pressurized water nuclear reactor in-pile component |
| CN111868837A (en) * | 2018-01-15 | 2020-10-30 | 俄罗斯国家原子能公司 | Actuating mechanism for a system for controlling and protecting a nuclear reactor |
| CN111868837B (en) * | 2018-01-15 | 2023-12-15 | 俄罗斯国家原子能公司 | Actuating mechanism for a system for controlling and protecting a nuclear reactor |
| CN112404816A (en) * | 2020-11-10 | 2021-02-26 | 中国核动力研究设计院 | Cross-shaped workpiece assembling and welding device |
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| CN102543225B (en) | 2014-08-06 |
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