CN205428502U - Small -size reactor of integration - Google Patents
Small -size reactor of integration Download PDFInfo
- Publication number
- CN205428502U CN205428502U CN201520872298.5U CN201520872298U CN205428502U CN 205428502 U CN205428502 U CN 205428502U CN 201520872298 U CN201520872298 U CN 201520872298U CN 205428502 U CN205428502 U CN 205428502U
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- Prior art keywords
- cylinder
- main pump
- reactor
- pressure vessel
- control rod
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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
-
- 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 belongs to pressurized -water type reactor general structural design technique specifically discloses a small -size reactor of integration. It include pressure vessel with be located pressure vessel the reactor core, compress tightly subassembly, control rod assembly, direction subassembly, control rod drive mechanism and direct current steam generator, still include the main pump with pressure vessel barrel lug connection, the reactor core includes core barrel and fuel assembly, be equipped with in core barrel and compress tightly subassembly and control rod assembly, pressure vessel and main pump lug connection, main pump horizontal installation, its entry is equipped with diverging device. The firing equipment is established on the pressure vessel top cap, carries out pressure control through temperature regulation is direct to the cooling agent in the pressure vessel, be equivalent to simultaneously arrange main equipment such as steam generator, steady voltage equipment and control rod drive mechanism in reactor pressure vessel in. Cancel outside loop pipe way, eliminated big cut accident, compact structure, control rod drive mechanism is built -in, has eliminated control rod ejection accident, and fixed security improves greatly.
Description
Technical field
This utility model belongs to pressurized water type reactor general structure design technology, is specifically related to the integrated small reactor of a kind of built-in steam generator, CRDM and manostat.
Background technology
The common most dispersed placement of pressurized water type reactor, steam generator, manostat be placed in the outside independent space of reactor pressure vessel, and main pump is placed on main pipeline, and they have a certain distance from reactor pressure vessel, and the hall space taken is bigger；CRDM is positioned on pressure vessels top cover, and outside arranges ventilation, the torr structure such as line, antidetonation, bulky, Heavy Weight.Further, since main pipeline and CRDM are pressure boundaries, there is damaged and that control rod ejection accident occurs possibility, bring potential safety hazard to reactor.The general power of this reactor is relatively big, and flexible arrangement is poor, the limited space of security performance lifting, it is impossible to meet people to power supply, heat supply, steam supply, freeze, the multifarious demand such as oil recovery.
Summary of the invention
The purpose of this utility model is to provide the integrated small reactor that a kind of compact conformation, security performance are high, take up room little.
The technical solution of the utility model is as follows:
Integrated small reactor, it include pressure vessel and the reactor core being positioned at pressure vessel, hold down assembly, C&P systems, guidance set, CRDM and once through steam generator, described pressure vessel includes pressure vessels top cover and pressure container cylinder, also includes the main pump being directly connected to pressure container cylinder；Described reactor core includes being positioned at the core barrel of pressure container cylinder bottom and being positioned at the fuel assembly of core barrel；It is provided with in core barrel and is positioned at holding down assembly above fuel assembly；Described C&P systems is positioned at core barrel；Described guidance set is to be located at the interior control rod guide tubes and bundles that holds down assembly；Described CRDM is positioned at above control rod guide tubes and bundles, described CRDM is externally provided with clamping cylinder, the inside of clamping cylinder is fixed with gripper shoe, the drive rod of described CRDM fixedly mounts through above-mentioned support plate, described clamping cylinder upper end is fixed with limiting plate, and the upper end of CRDM passes above-mentioned limiting plate；It is provided with holddown spring between flange face and the upper flanges face of clamping cylinder of described pressure vessels top cover lower end；Form annular chamber between described clamping cylinder and pressure container cylinder, be provided with some once through steam generators uniformly in described annular chamber inner circumferential；Described pressure vessels top cover is provided with and adds heat pipe；Being machined with main pump installing hole on described pressure container cylinder, its level height is between once through steam generator and reactor core, and the coolant input of described main pump is arranged in above-mentioned installing hole, and main pump is horizontally mounted；The entrance of described main pump is provided with part flow arrangement.
In above-mentioned integrated small reactor: after the wiring of described CRDM is grouped boundling, the most a branch of derive pressure vessels top cover by stem；The lower end of described stem is fixed on limiting plate, and upper end passes base, and described base is welded on pressure vessels top cover,
In above-mentioned integrated small reactor: described part flow arrangement is the shunt cylinder being fixed in pressure vessel, the barrel of described shunt cylinder is machined with tap hole, the lower end of the shunt cylinder that the position of tap hole is corresponding and described with the coolant entrance position of main pump seals with core barrel and installs.
In above-mentioned integrated small reactor: the lower end of described shunt cylinder is installed by realizing sealing with core barrel.
In above-mentioned integrated small reactor: be fixed with ring-shaped bearing platform in described pressure container cylinder, its inside lower end is machined with a circle lip, and the upper end of described cradle cylinder body is machined with flange, and flange is pressed in the lip of ring-shaped bearing platform；A circle annular opening it is machined with, as the passage of coolant circulation on ring-shaped bearing platform.
In above-mentioned integrated small reactor: be fixed with limited block in the bottom (head) of described pressure container cylinder, all contact with limited block with side wall lower ends bottom described core barrel.
In above-mentioned integrated small reactor: described main pump is horizontal shielding main pump.
The beneficial effects of the utility model are:
Firing equipment is arranged on pressure vessels top cover, directly the coolant in pressure vessel is carried out Stress control by temperature regulation, be equivalent to be placed in reactor pressure vessel by the main equipments such as steam generator, pressure stabilizing device and CRDM simultaneously, main pump is directly connected with pressure vessel, eliminate the return of outside, eliminate large break accident, its compact conformation；CRDM is built-in, eliminates control rod ejection accident, and fixing safety is greatly improved.
CRDM wiring packet boundling is derived pressure vessels top cover by stem.The entire infrastructure not only realizing CRDM is internally installed at pressure vessel, utilizes base to install stem, the Reliable guarantee integrity of pressure boundary, and readily accessible installation, it is simple to repair and maintenance simultaneously.
In order to adapt to the main pump that transverse-plug type direct with pressure vessel is connected, design shunt cylinder, make coolant after steam generator is out, discharge orifice from shunt cylinder barrel is flowed into the coolant entrance pipeline of main pump, is flowed among the ring cavity between pressure vessel lower end sidewall and core barrel after outlet conduit flows out again.
At pressure vessel indoor design ring-shaped bearing platform, not only ensure that cradle cylinder body and the installation held down assembly, ensure that the coolant flowed out from steam generator flows into part flow arrangement by ring-shaped bearing platform simultaneously, enter main pump.
The main pump that the application uses is horizontal shielding main pump, it is to avoid the stator winding of motor contacts with coolant with rotor, and impeller and armature spindle are inclusive in pressure boundary, there is not the risk of leakage.The most horizontal main pump is directly installed on pressure vessel, eliminates main pipeline, and safety is higher, and structure is the compactest.
Devise the limited block being welded on reactor pressure vessel cylinder bottom (head), it is possible to core barrel is carried out cross spacing, further ensure Stability Analysis of Structures with reliable.
Sealing ring is utilized to realize the sealing between part flow arrangement and core barrel, it is ensured that the sealing of pressure boundary.
Accompanying drawing explanation
Fig. 1 is integrated small reactor structure schematic diagram；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the sectional view of shunt cylinder；
Fig. 4 is shunt cylinder 3-D solid structure schematic diagram；
In figure: 1. pressure vessels top cover；2. pressure container cylinder；3. once through steam generator；4. ring-shaped bearing platform；5. main pump；6. shunt cylinder；7. sealing ring；8. limited block；9. base；10. add heat pipe；11. stems；12. limiting plates；13. holddown springs；14. clamping cylinders；15. CRDMs；16. support plates；17. control rod guide tubes and bundles；18. hold down assembly；19. core barrels；20. fuel assemblies；21. C&P systems.
Detailed description of the invention
Below in conjunction with the accompanying drawings and this utility model is described in further detail by specific embodiment.
As depicted in figs. 1 and 2, integrated small reactor built-in steam generator, CRDM and add the pressure stabilizing device that heat pipe is constituted.
Welding annular supporting station 4 in pressure container cylinder 2, by such structure by core barrel 19 and hold down assembly 18 flange hang on it.Fuel assembly 20 is placed in core barrel 19, by 18 compressions that hold down assembly.Hold down assembly 18 top be clamping cylinder 14 and holddown spring 13 successively, pressure vessels top cover 1 compresses axial load clamping cylinder 14 the most at last, core barrel 19, fuel assembly 20 and 18 compressions that hold down assembly that holddown spring 13 produces, preventing its upper and lower play, four block weldings limited block 8 on reactor pressure vessel cylinder 2 bottom (head) carries out cross spacing to core barrel 19.Limiting plate 12 and support plate 16 are fixedly connected on clamping cylinder 14.The upper end of clamping cylinder 14 has some discharge orifices, and the coolant after fuel assembly 20 heats flows out from this hole, enters exterior chamber.
CRDM 15 is through support plate 16, and is fixedly mounted on support plate 16, and upper end passes limiting plate 12, and is carried out spacing by limiting plate 12 to it, prevents that displacement is excessive causes structural failure.The lower end of CRDM 15 is connected with C&P systems 21, and drives the upper and lower motion of C&P systems 21, and control rod guide tubes and bundles 17 is fixed on and holds down assembly on 18, provides motion guide for it.The wiring of CRDM 15 derives pressure vessels top cover 1 by stem 11 after being grouped boundling.Stem 11 lower end is fixed on limiting plate 12, and upper end passes base 9, and base 9 is welded on pressure vessels top cover 1.
Multiple stage once through steam generator 3 is evenly arranged in the ring cavity between reactor pressure vessel cylinder 2 and clamping cylinder 14, once through steam generator 3 upper end is welded with reactor pressure vessel cylinder 2, lower end is spacing by ring-shaped bearing platform 4, coolant by through ring-shaped bearing platform 4 to dirty.On ring-shaped bearing platform 4, every corresponding discharge orifice of once through steam generator 3, coolant after cooling flows out from this hole.The upper end of shunt cylinder 6 is fixedly connected on the lower surface of ring-shaped bearing platform 4, lower end is laid has the sealing ring 7 of resilience after compression, and compressed sealing by the boss arranged on core barrel 19 barrel, thus the space of supporting station 4 bottom is separated into two independent regions.Multiple stage main pump 5 is fixed on the reactor pressure vessel cylinder 2 below supporting station 4, entrance is adjacent to shunt cylinder 6, coolant enters the region of hanging basket side after flowing out from the hole of supporting station 4, then concentrate in the perforate from shunt cylinder 6 barrel and flow in main pump 5, pressurized after reinject reactor core.
Stable-pressure device is formed in being arranged on pressure vessels top cover 1 by firing equipment, add heat pipe 10 to be arranged in pressure vessels top cover 1, directly the coolant in pressure vessel is carried out Stress control by temperature regulation, being thered is provided vapour, liquid biphase volume space by pressure vessels top cover 1, coolant can be by fluctuation hole stream entry/exit.
The concrete structure of shunt cylinder 6 as shown in Figure 3 and Figure 4.Shunt cylinder 6 in the application is the tubular turned up in upper edge, and the upper end on upper edge is also machined with flange, makes shunt cylinder 6 fixedly mount with ring-shaped bearing platform 4 by flange.Barrel is machined with tap hole, and the position of each tap hole is corresponding with the coolant entrance position of main pump 5, and the coolant flow down from ring-shaped bearing platform 4 flows into main pump 5 from tap hole.
Above-described embodiment is only preferred embodiment of the present utility model; the not restriction to this utility model protection domain; in every case use design principle of the present utility model, and carry out non-creativeness work on this basis and the change made, within protection domain of the present utility model all should be belonged to.
Claims (7)
1. integrated small reactor, it includes pressure vessel and is positioned at the reactor core of pressure vessel, hold down assembly (18), C&P systems, guidance set, CRDM (15) and once through steam generator (3), described pressure vessel includes pressure vessels top cover (1) and pressure container cylinder (2), it is characterised in that: also include the main pump (5) being directly connected to pressure container cylinder (2)；Described reactor core includes the core barrel (19) being positioned at pressure container cylinder (2) bottom and is positioned at the fuel assembly (20) of core barrel (19)；Hold down assembly (18) being positioned at fuel assembly (20) top it are provided with in core barrel (19)；Described C&P systems (21) is positioned at core barrel (19)；Described guidance set is to be located at the control rod guide tubes and bundles (17) held down assembly in (18)；Described CRDM (15) is positioned at control rod guide tubes and bundles (17) top, described CRDM (15) is externally provided with clamping cylinder (14), the inside of clamping cylinder (14) is fixed with gripper shoe (16), the drive rod of described CRDM fixedly mounts through above-mentioned support plate (16), described clamping cylinder (14) upper end is fixed with limiting plate (12), and the upper end of CRDM (15) passes above-mentioned limiting plate (12)；It is provided with holddown spring (13) between flange face and the upper flanges face of clamping cylinder (14) of described pressure vessels top cover (1) lower end；Form annular chamber between described clamping cylinder (14) and pressure container cylinder (2), be provided with some once through steam generators (3) uniformly in described annular chamber inner circumferential；Described pressure vessels top cover (1) is provided with and adds heat pipe (10)；It is machined with main pump installing hole on described pressure container cylinder (2), its level height is positioned between once through steam generator (3) and reactor core, the coolant input of described main pump (5) is arranged in above-mentioned installing hole, and main pump (5) is horizontally mounted；The entrance of described main pump (5) is provided with part flow arrangement.
2. integrated small reactor as claimed in claim 1, it is characterised in that: after the wiring of described CRDM 15 is grouped boundling, the most a branch of by stem (11) derivation pressure vessels top cover 1；The lower end of described stem (11) is fixed on limiting plate (12), and upper end passes base 9, and described base 9 is welded on pressure vessels top cover (1),
3. integrated small reactor as claimed in claim 1, it is characterized in that: described part flow arrangement is the shunt cylinder (6) being fixed in pressure container cylinder (2), the barrel of described shunt cylinder (6) is machined with tap hole, the lower end of the shunt cylinder (6) that the position of tap hole is corresponding and described with the coolant entrance position of main pump (5) seals with core barrel (19) and installs.
4. integrated small reactor as claimed in claim 3, it is characterised in that: the lower end of described shunt cylinder (6) is installed by realizing sealing with core barrel (19).
5. integrated small reactor as claimed in claim 1, it is characterized in that: in described pressure container cylinder (2), be fixed with ring-shaped bearing platform (4), its inside lower end is machined with a circle lip, the upper end of described cradle cylinder body (19) is machined with flange, and flange is pressed in the lip of ring-shaped bearing platform (4)；A circle annular opening it is machined with, as the passage of coolant circulation on ring-shaped bearing platform (4).
6. the integrated small reactor as described in Claims 1 to 5, it is characterized in that: be fixed with limited block (8) in the bottom (head) of described pressure container cylinder (2), described core barrel (19) bottom all contacts with limited block (8) with side wall lower ends.
7. integrated small reactor as claimed in any one of claims 1 to 5, wherein, it is characterised in that: described main pump (5) is horizontal shielding main pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520872298.5U CN205428502U (en) | 2015-11-05 | 2015-11-05 | Small -size reactor of integration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520872298.5U CN205428502U (en) | 2015-11-05 | 2015-11-05 | Small -size reactor of integration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205428502U true CN205428502U (en) | 2016-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520872298.5U Withdrawn - After Issue CN205428502U (en) | 2015-11-05 | 2015-11-05 | Small -size reactor of integration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205428502U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105280257A (en) * | 2015-11-05 | 2016-01-27 | 中国核动力研究设计院 | Integrated small reactor |
| CN106297908A (en) * | 2016-09-29 | 2017-01-04 | 中国核动力研究设计院 | It is applied to bunch formula control rod method for arranging and the operation management method of small-sized presurized water reactor |
| CN108648839A (en) * | 2018-05-14 | 2018-10-12 | 中国核动力研究设计院 | The flow passage system of integral type nuclear reactor pressure-bearing type main pump |
| CN108648834A (en) * | 2018-04-19 | 2018-10-12 | 西安交通大学 | Honeycomb briquet type fuel assembly and small size long-life lead bismuth cool down fast reactor reactor core |
| CN108766592A (en) * | 2018-05-07 | 2018-11-06 | 哈尔滨工程大学 | A kind of full Natural Circulation Integrated PWR of flash distillation driving |
| CN114017765A (en) * | 2021-11-03 | 2022-02-08 | 中广核研究院有限公司 | Flow distribution structure of steam generator |
-
2015
- 2015-11-05 CN CN201520872298.5U patent/CN205428502U/en not_active Withdrawn - After Issue
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105280257A (en) * | 2015-11-05 | 2016-01-27 | 中国核动力研究设计院 | Integrated small reactor |
| CN106297908A (en) * | 2016-09-29 | 2017-01-04 | 中国核动力研究设计院 | It is applied to bunch formula control rod method for arranging and the operation management method of small-sized presurized water reactor |
| CN106297908B (en) * | 2016-09-29 | 2018-05-29 | 中国核动力研究设计院 | Cluster formula control rod method for arranging and operation management method applied to small-sized presurized water reactor |
| CN108648834A (en) * | 2018-04-19 | 2018-10-12 | 西安交通大学 | Honeycomb briquet type fuel assembly and small size long-life lead bismuth cool down fast reactor reactor core |
| CN108648834B (en) * | 2018-04-19 | 2019-04-09 | 西安交通大学 | Honeycomb briquet type fuel assembly and the cooling fast reactor reactor core of small size long-life lead bismuth |
| CN108766592A (en) * | 2018-05-07 | 2018-11-06 | 哈尔滨工程大学 | A kind of full Natural Circulation Integrated PWR of flash distillation driving |
| CN108648839A (en) * | 2018-05-14 | 2018-10-12 | 中国核动力研究设计院 | The flow passage system of integral type nuclear reactor pressure-bearing type main pump |
| CN114017765A (en) * | 2021-11-03 | 2022-02-08 | 中广核研究院有限公司 | Flow distribution structure of steam generator |
| CN114017765B (en) * | 2021-11-03 | 2024-03-29 | 中广核研究院有限公司 | Flow distribution structure of steam generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160803 Effective date of abandoning: 20180706 |