CN103106932B - Collecting type double-flow Supercritical-Pressure Light Water Cooled Reactor - Google Patents
Collecting type double-flow Supercritical-Pressure Light Water Cooled Reactor Download PDFInfo
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- CN103106932B CN103106932B CN201310042981.1A CN201310042981A CN103106932B CN 103106932 B CN103106932 B CN 103106932B CN 201310042981 A CN201310042981 A CN 201310042981A CN 103106932 B CN103106932 B CN 103106932B
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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 collecting type double-flow Supercritical-Pressure Light Water Cooled Reactor, comprise reactor pressure vessel, outlet thermal sleeve (204) and the in-pile component be arranged in reactor pressure vessel, the lower chambers of ring cavity and connection ring cavity is configured with between reactor pressure vessel and in-pile component, upper cavity is provided with in in-pile component, outlet vapor chamber, the mixing chamber of manifold and connection upper cavity, upper cavity and ring cavity are connected, manifold and lower chambers are connected, outlet thermal sleeve (204) and outlet vapor chamber are connected, reactor pressure vessel is provided with the entrance sleeve (107) connecting ring cavity and the discharge coupling pipe (103) connecting outlet thermal sleeve (204), mixing chamber and outlet vapor chamber are all connected by fuel assembly and manifold.The present invention adopts said structure, and one-piece construction is simple, is convenient to realize, and by being designed to two-flow core structure, avoids the risk that too much flow process causes reactor core safety coefficient to reduce.
Description
Technical field
The present invention relates to Supercritical-Pressure Light Water Cooled Reactor, specifically collecting type double-flow Supercritical-Pressure Light Water Cooled Reactor.
Background technology
Supercritical-Pressure Light Water Cooled Reactor (SCWR) take water as cooling medium, a kind of reactor of outlet water state on critical point (374 DEG C, 22.1MPa).Because operational factor is higher, consider the restriction of the aspect such as current material, manufacture level, Supercritical-Pressure Light Water Cooled Reactor is designed to multipaths structure more.Supercritical-Pressure Light Water Cooled Reactor conventional is at present designed to three flowage structures more, and the reactor axial distribution of three flowage structures is even, but complex structure, too much flow process number can make reactor natural-circulation capacity decline, and reactor core safety coefficient reduces.
Summary of the invention
Too much and the baroque defect of the flow process that the object of the invention is to exist for existing Supercritical-Pressure Light Water Cooled Reactor, provides that a kind of structure is simple, flow process rational collecting type double-flow Supercritical-Pressure Light Water Cooled Reactor.
Object of the present invention is achieved through the following technical solutions: collecting type double-flow Supercritical-Pressure Light Water Cooled Reactor, comprise reactor pressure vessel, outlet thermal sleeve and the in-pile component be arranged in reactor pressure vessel, be configured with ring cavity between described reactor pressure vessel and in-pile component and connect the lower chambers of ring cavity, upper cavity is provided with in described in-pile component, outlet vapor chamber, the mixing chamber of manifold and connection upper cavity, upper cavity and ring cavity are connected, manifold and lower chambers are connected, described outlet thermal sleeve and outlet vapor chamber are connected, described reactor pressure vessel is provided with the entrance sleeve connecting ring cavity and the discharge coupling pipe connecting outlet thermal sleeve, described mixing chamber and outlet vapor chamber are all connected by fuel assembly and manifold.The present invention is when applying, after inlet water enters reactor from entrance sleeve, part water enters in upper cavity by ring cavity, another part water is by ring cavity and enter in manifold with lower chambers, the water entered in upper cavity enters in manifold through fuel assembly again after hybrid chamber, after summarizing the water entered from lower chambers in manifold, in manifold, water enters in outlet vapor chamber by fuel assembly from the bottom to top, after collecting in outlet vapor chamber, mixing, reactor is flowed out along outlet thermal sleeve, and then the circulation of realization response reactor coolant.Wherein, the fuel assembly connecting mixing chamber and manifold is a flow process fuel assembly, the fuel assembly connecting outlet vapor chamber and manifold is two flow process fuel assemblies, distribute according to rational flow process to the process of manifold after ring cavity, upper cavity, mixing chamber successively entering water from entrance sleeve, the cooling medium as moderator, a flow process fuel assembly flows through core region.The present invention is collected by manifold achievement unit subentry cooling medium, all moderator and a flow process fuel assembly outlet coolant and is mixed, and realizes the cooling medium isolation of one, two flow process fuel assemblies by outlet vapor chamber and above-critical state goes out collecting, mix and deriving of saliva.
Described in-pile component comprises cradle cylinder body, be connected to the reactor core lower plate of cradle cylinder body lower end, the manifold housing be connected with reactor core lower plate, be fixed on the hold-down barrel in cradle cylinder body, be connected to the reactor core upper plate of hold-down barrel lower end and the bottom support casting be arranged in hold-down barrel and upper coaming plate, described upper cavity is the hold-down barrel inner region above bottom support casting, the described upper and lower two ends of upper coaming plate are connected with bottom support casting and reactor core upper plate respectively, described mixing chamber is upper coaming plate, the cavity formed between bottom support casting and reactor core upper plate three, bottom support casting is provided with the discharge orifice connecting upper cavity and mixing chamber, described outlet vapor chamber is upper coaming plate, bottom support casting, the annular housing that reactor core upper plate and hold-down barrel are formed, described manifold is the cavity formed between reactor core lower plate and manifold housing, described ring cavity is the region between cradle cylinder body outer wall and the cylinder inboard wall of reactor pressure vessel, lower chambers is the cavity formed between manifold housing and the low head of reactor pressure vessel, described manifold housing is provided with the discharge orifice connecting lower chambers and manifold, described cradle cylinder body and hold-down barrel top are equipped with the perforate of circumference, described ring cavity and upper cavity are connected by the perforate of cradle cylinder body and hold-down barrel.The water entered when the present invention applies in upper cavity enters upper cavity from the circumferential perforate on cradle cylinder body and hold-down barrel top, then to enter after mixing chamber from the discharge orifice bottom support casting and flow in manifold through fuel assembly.
The inwall of described cradle cylinder body is provided with sealing sustained ring, and described hold-down barrel lower end is arranged on sealing sustained ring and seals circular gap between hold-down barrel lower end and cradle cylinder body.Under the effect of sealing sustained ring, the isolation of inlet water and core region can be realized.
Cradle cylinder body inwall between described sealing sustained ring and reactor core lower plate is connected with coaming plate forming board.
Described fuel assembly comprises the sub-component that base, bottom nozzle and upper and lower two ends are connected with upper base and bottom nozzle respectively, described bottom nozzle to be fixed in reactor core lower plate and to connect with manifold, and described upper base is through reactor core upper plate and contact with bottom support casting lower surface.So, the present invention compresses fuel assembly when applying by bottom support casting
As preferably, in each fuel assembly, the quantity of sub-component is 4.
Independently moderator passage and coolant channel is provided with in described sub-component.
Because the fuel assembly connected when the present invention applies needed for manifold and mixing chamber and connection manifold and outlet vapor chamber all needs many groups, in order to guaranteed flow distributes rationally, in described reactor core lower plate, be provided with the throttling element on the passage being positioned at fuel assembly connection manifold.
Described outlet thermal sleeve one end is radially connected with outlet vapor chamber through after cradle cylinder body, hold-down barrel successively, and its other end is connected with thermal sleeve push-tight mechanism.The present invention by setting up thermal sleeve push-tight mechanism, and then can utilize thermal sleeve push-tight mechanism's inner spring and helicitic texture control outlet thermal sleeve and hold-down barrel push-tight, be separated and reassemble.
Be pressed on hold-down barrel under the top cover of described reactor pressure vessel, and be provided with holddown spring between hold-down barrel and top cover.The present invention is by setting up holddown spring, and the snap-in force that so can be provided by top cover realizes the compression to in-pile component and fuel assembly.
Compared with prior art, the present invention has following beneficial effect: the design of (1) in-pile component of the present invention achieves the double-flow cooling medium circulation in Supercritical-Pressure Light Water Cooled Reactor, provide rational flow process and flow field distribution, the region flowed through because of entirety is reduced, and structure of the present invention like this also can be simplified.
(2) the present invention apply time go out saliva through outlet thermal sleeve after flow out through discharge coupling pipe again, go out saliva to contact with the cylinder inboard wall of reactor pressure vessel, and then make reactor pressure vessel can carry out design on the basis of current material, save cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the structural representation that embodiments of the invention have when fluid circulates.
Name in accompanying drawing corresponding to Reference numeral is called: 101, top cover, 102, top cylindrical shell, 103, discharge coupling pipe, 104, reactor core section cylindrical shell, 105, low head, 106, control rod drive mechanisms (CRD) base, 107, entrance sleeve, 108, thermal sleeve push-tight mechanism, 201, upper support plate, 202, throttling element, 203, manifold housing, 204, outlet thermal sleeve, 205, Compress Spring, 206, cradle cylinder body, 207, reactor core lower plate, 208, coaming plate forming board, 209, sealing sustained ring, 210, hold-down barrel, 211, reactor core upper plate, 212, bottom support casting, 213, upper coaming plate, 214, control rod guidance set, 301, upper base, 302, sub-component, 303, bottom nozzle.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment:
As shown in Figures 1 and 2, collecting type double-flow Supercritical-Pressure Light Water Cooled Reactor, the in-pile component comprising reactor pressure vessel, outlet thermal sleeve 204 and be arranged in reactor pressure vessel, wherein, reactor pressure vessel overall geometry is similar to traditional pressurized water type reactor pressure vessel, is made up of top cover 101, top cylindrical shell 102, reactor core section cylindrical shell 104 and low head 105.Wherein, top cover 101 is furnished with some control rod drive mechanisms (CRD) bases 106.In-pile component comprises cradle cylinder body 206, control rod guidance set 214, the reactor core lower plate 207 being connected to cradle cylinder body 206 lower end, the manifold housing 203 be connected with reactor core lower plate 207, the hold-down barrel 210 be fixed in cradle cylinder body 206, the reactor core upper plate 211 being connected to hold-down barrel 210 lower end and the bottom support casting 212 be arranged in hold-down barrel 210 and upper coaming plate 213.Hold-down barrel 210 inner region above bottom support casting 212 forms upper cavity, upper coaming plate about 213 two ends are connected with bottom support casting 212 and reactor core upper plate 211 respectively, the cavity formed between upper coaming plate 213, bottom support casting 212 and reactor core upper plate 211 three is mixing chamber, and bottom support casting 212 is provided with the discharge orifice connecting upper cavity and mixing chamber.The annular housing that upper coaming plate 213, bottom support casting 212, reactor core upper plate 211 and hold-down barrel 210 4 are formed is outlet vapor chamber, and the cavity formed between reactor core lower plate 207 and manifold housing 203 is manifold.Region between cradle cylinder body 206 outer wall and the cylinder inboard wall of reactor pressure vessel forms ring cavity, the cavity formed between the low head 105 of manifold housing 203 and reactor pressure vessel is lower chambers, ring cavity and lower chambers are connected, manifold housing 203 is provided with the discharge orifice connecting lower chambers and manifold, both cradle cylinder body 206 and hold-down barrel 210 top is equipped with the perforate of circumference, and ring cavity and upper cavity pass through cradle cylinder body 206 and the perforate both hold-down barrel 210 is connected.The top cover of reactor pressure vessel is pressed on hold-down barrel 210 for 101 times, and is provided with holddown spring 205 between hold-down barrel 210 and top cover 101.As preferably, the region that top cover 101 presses down hold-down barrel 210 is annular region, and holddown spring 205 is the Z-shaped spring structure of ring-type.Also be provided with in hold-down barrel 210 and be connected with its inwall and be positioned at the upper support plate 201 above bottom support casting 212, upper support plate 201 is also provided with discharge orifice, and control rod guidance set 214 realizes location by upper support plate 215 and bottom support casting 212.
Outlet thermal sleeve 204 one end is radially connected through after cradle cylinder body 206, hold-down barrel 210 and outlet vapor chamber successively, and its other end is connected with thermal sleeve push-tight mechanism 108.In order to enhanced leaktightness performance, outlet thermal sleeve 204 coordinates with the perforate on hold-down barrel 210 and relies on sealing ring to realize sealing.The top cylindrical shell 102 of reactor pressure vessel is provided with the entrance sleeve 107 connecting ring cavity and the discharge coupling pipe 103 connecting outlet thermal sleeve 204.
The inwall of cradle cylinder body 206 is provided with sealing sustained ring 209, and hold-down barrel 210 lower end is arranged on circular gap sealing sustained ring 209 sealed between hold-down barrel 210 lower end and cradle cylinder body 206.In order to reduce the impact of reactor core on reactor pressure vessel irradiation, cradle cylinder body 206 inwall between sealing sustained ring 209 and reactor core lower plate 207 is connected with coaming plate forming board 208, and then by coaming plate forming board 208, certain isolation is carried out to the fuel assembly radiation in heap.
Mixing chamber and outlet vapor chamber are all connected by fuel assembly and manifold, fuel assembly comprises the sub-component 302 that base 301, bottom nozzle 303 and upper and lower two ends are connected with upper base 301 and bottom nozzle 303 respectively, bottom nozzle 301 to be fixed in reactor core lower plate 207 and to connect with manifold, and upper base 303 is through reactor core upper plate 211 and contact with bottom support casting 212 lower surface.Wherein, upper base 301 sidepiece has window, as the entrance of a flow process fuel assembly cooling medium or the outlet of two flow process fuel assembly cooling mediums.As preferably, in each fuel assembly, the quantity of sub-component 302 is 4, and is provided with independently moderator passage and coolant channel in each sub-component 302.In order to make assignment of traffic even, in reactor core lower plate 207, be provided with the throttling element 202 on the passage being positioned at fuel assembly connection manifold.
Above content is the further description done the present invention in conjunction with concrete preferred implementation, can not assert that the specific embodiment of the present invention is confined to these explanations.For general technical staff of the technical field of the invention, not departing from other embodiments drawn under technical scheme of the present invention, all should be included in protection scope of the present invention.
Claims (9)
1. collecting type double-flow Supercritical-Pressure Light Water Cooled Reactor, it is characterized in that: comprise reactor pressure vessel, outlet thermal sleeve (204) and the in-pile component be arranged in reactor pressure vessel, be configured with ring cavity between described reactor pressure vessel and in-pile component and connect the lower chambers of ring cavity, upper cavity is provided with in described in-pile component, outlet vapor chamber, the mixing chamber of manifold and connection upper cavity, upper cavity and ring cavity are connected, manifold and lower chambers are connected, described outlet thermal sleeve (204) and outlet vapor chamber are connected, described reactor pressure vessel is provided with the entrance sleeve (107) connecting ring cavity and the discharge coupling pipe (103) connecting outlet thermal sleeve (204), described mixing chamber and outlet vapor chamber are all connected by fuel assembly and manifold, described in-pile component comprises cradle cylinder body (206), be connected to the reactor core lower plate (207) of cradle cylinder body (206) lower end, the manifold housing (203) be connected with reactor core lower plate (207), be fixed on the hold-down barrel (210) in cradle cylinder body (206), be connected to the reactor core upper plate (211) of hold-down barrel (210) lower end and the bottom support casting (212) be arranged in hold-down barrel (210) and upper coaming plate (213), described upper cavity is hold-down barrel (210) inner region of bottom support casting (212) top, described upper coaming plate (213) is connected with bottom support casting (212) and reactor core upper plate (211) at two ends up and down respectively, described mixing chamber is upper coaming plate (213), the cavity formed between bottom support casting (212) and reactor core upper plate (211) three, bottom support casting (212) is provided with the discharge orifice connecting upper cavity and mixing chamber, described outlet vapor chamber is upper coaming plate (213), bottom support casting (212), the annular housing that reactor core upper plate (211) and hold-down barrel (210) four are formed, described manifold is the cavity formed between reactor core lower plate (207) and manifold housing (203), described ring cavity is cradle cylinder body (206) region between outer wall and the cylinder inboard wall of reactor pressure vessel, lower chambers is the cavity formed between the low head (105) of manifold housing (203) and reactor pressure vessel, described manifold housing (203) is provided with the discharge orifice connecting lower chambers and manifold, described cradle cylinder body (206) and both tops of hold-down barrel (210) are equipped with the perforate of circumference, described ring cavity and upper cavity are connected by cradle cylinder body (206) and hold-down barrel (210) both perforates.
2. collecting type double-flow Supercritical-Pressure Light Water Cooled Reactor according to claim 1, it is characterized in that: the inwall of described cradle cylinder body (206) is provided with sealing sustained ring (209), described hold-down barrel (210) lower end is arranged on circular gap sealing sustained ring (209) sealed between hold-down barrel (210) lower end and cradle cylinder body (206).
3. collecting type double-flow Supercritical-Pressure Light Water Cooled Reactor according to claim 2, is characterized in that: cradle cylinder body (206) inwall between described sealing sustained ring (209) and reactor core lower plate (207) is connected with coaming plate forming board (208).
4. collecting type double-flow Supercritical-Pressure Light Water Cooled Reactor according to claim 1, it is characterized in that: described fuel assembly comprises the sub-component (302) that base (301), bottom nozzle (303) and upper and lower two ends are connected with upper base (301) and bottom nozzle (303) respectively, it is upper and connect with manifold that described bottom nozzle (301) is fixed on reactor core lower plate (207), and described upper base (303) is through reactor core upper plate (211) and contact with bottom support casting (212) lower surface.
5. collecting type double-flow Supercritical-Pressure Light Water Cooled Reactor according to claim 4, is characterized in that: in each fuel assembly, the quantity of sub-component (302) is 4.
6. collecting type double-flow Supercritical-Pressure Light Water Cooled Reactor according to claim 4, is characterized in that: be provided with independently moderator passage and coolant channel in described sub-component (302).
7. collecting type double-flow Supercritical-Pressure Light Water Cooled Reactor according to claim 4, is characterized in that: be provided with the throttling element (202) on the passage being positioned at fuel assembly connection manifold in described reactor core lower plate (207).
8. according to the collecting type double-flow Supercritical-Pressure Light Water Cooled Reactor in claim 1 ~ 7 described in any one, it is characterized in that: described outlet thermal sleeve (204) one end is radially connected with outlet vapor chamber through cradle cylinder body (206), hold-down barrel (210) successively afterwards, and its other end is connected with thermal sleeve push-tight mechanism (108).
9. according to the collecting type double-flow Supercritical-Pressure Light Water Cooled Reactor in claim 1 ~ 7 described in any one, it is characterized in that: be pressed on hold-down barrel (210) under the top cover (101) of described reactor pressure vessel, and be provided with holddown spring (205) between hold-down barrel (210) and top cover (101).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310042981.1A CN103106932B (en) | 2013-02-04 | 2013-02-04 | Collecting type double-flow Supercritical-Pressure Light Water Cooled Reactor |
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| CN201310042981.1A CN103106932B (en) | 2013-02-04 | 2013-02-04 | Collecting type double-flow Supercritical-Pressure Light Water Cooled Reactor |
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| CN103106932B true CN103106932B (en) | 2015-12-30 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108257684B (en) * | 2017-12-28 | 2023-10-31 | 中广核研究院有限公司 | Reactor pressure vessel and method for operating the same |
| CN108062985B (en) * | 2017-12-28 | 2024-05-10 | 中广核研究院有限公司 | Pressure vessel for a reactor |
| CN109036593B (en) * | 2018-07-20 | 2024-06-11 | 中广核研究院有限公司 | Reactor core hanging basket structure |
| CN110111914A (en) * | 2019-04-28 | 2019-08-09 | 中广核研究院有限公司 | A kind of nuclear reactor and its in-pile component |
| CN110164568A (en) * | 2019-05-17 | 2019-08-23 | 中广核研究院有限公司 | A kind of reactor body construction suitable for double-layer sleeve structure nuclear steam supply system |
| CN110136849A (en) * | 2019-05-17 | 2019-08-16 | 中广核研究院有限公司 | A kind of reactor body construction of the nuclear steam supply system with double-layer sleeve structure |
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