CN108257684B - Reactor pressure vessel and method for operating the same - Google Patents
Reactor pressure vessel and method for operating the same Download PDFInfo
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- CN108257684B CN108257684B CN201711457701.8A CN201711457701A CN108257684B CN 108257684 B CN108257684 B CN 108257684B CN 201711457701 A CN201711457701 A CN 201711457701A CN 108257684 B CN108257684 B CN 108257684B
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- cavity assembly
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000000945 filler Substances 0.000 claims abstract description 33
- 238000002347 injection Methods 0.000 claims description 20
- 239000007924 injection Substances 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 17
- 239000002826 coolant Substances 0.000 claims description 15
- 239000007921 spray Substances 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 210000002445 nipple Anatomy 0.000 claims description 7
- 238000012360 testing method Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 description 8
- 238000005242 forging Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/02—Details
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/02—Details
- G21C13/028—Seals, e.g. for pressure vessels or containment vessels
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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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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
The invention discloses a reactor pressure vessel and a working method thereof, wherein the pressure vessel comprises a closed vessel main body, a flow guide ring cavity assembly and at least one inner connecting pipe; at least one filler neck is arranged on the side surface of the container main body, and the diversion ring cavity assembly is axially arranged in the container main body; the upper end of the diversion ring cavity assembly is positioned above the filler neck and connected to the inner wall of the container main body, and the lower end of the diversion ring cavity assembly is positioned below the filler neck and connected to the inner wall of the container main body; the inner connecting pipe is arranged in the connecting pipe mouth, one end of the inner connecting pipe is connected to the diversion ring cavity assembly, and the other end of the inner connecting pipe corresponds to the pipe mouth of the connecting pipe mouth; the space among the periphery of the guide ring cavity assembly, the periphery of the inner connecting pipe and the inner wall of the corresponding container main body forms a guide ring cavity; the inner channel of the inner connecting pipe, the inner channel of the guide ring cavity assembly and the inner space of the container main body are communicated to form an inner flow channel; the internal flow passage is isolated from the guide ring cavity. The invention meets the requirement of compact arrangement and is suitable for ocean working conditions.
Description
Technical Field
The invention relates to the technical field of nuclear power, in particular to a reactor pressure vessel and a working method thereof.
Background
Currently, energy supply is increasingly tense, and small stacks are touted by countries around the world, especially offshore small stacks, due to their wide applicability, shorter construction period and lower construction cost.
The traditional land high-power reactor is not limited by space, and the main pipeline structure which has a simple structure and occupies more space can be adopted in the aspect of a reactor pressure vessel to realize the circulation of the primary loop coolant. On the one hand, the limitation of space must be considered, the height of the pressure container is reduced as much as possible, and the pressure container and other main equipment are compactly arranged; on the other hand, small stacks on the sea are affected by sea waves and have the possibility of overturning, so wind loads must be considered as a critical design factor, whereas traditional land stacks do not have this consideration and are not suitable for marine conditions.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a reactor pressure vessel meeting the requirement of compact arrangement and a working method thereof.
The technical scheme adopted for solving the technical problems is as follows: providing a reactor pressure vessel comprising a closed vessel body, a flow-guiding annular cavity assembly and at least one inner connecting pipe; the side surface of the container main body is provided with at least one filler neck, and the diversion ring cavity assembly is axially arranged in the container main body;
the upper end of the diversion ring cavity assembly is positioned above the filler neck and connected to the inner wall of the container main body, and the lower end of the diversion ring cavity assembly is positioned below the filler neck and connected to the inner wall of the container main body; the inner connecting pipe is arranged in the connecting pipe mouth, one end of the inner connecting pipe is connected to the diversion ring cavity assembly, and the other end of the inner connecting pipe corresponds to the pipe mouth of the connecting pipe mouth;
the inner channel of the inner connecting pipe, the inner channel of the guide ring cavity assembly and the inner space of the container main body are communicated to form an inner flow channel; the outer periphery of the guide ring cavity assembly, the outer periphery of the inner connecting tube and the corresponding space between the inner walls of the container main body form a guide ring cavity; the guide ring cavity is positioned on the outer ring of the inner flow passage and isolated from the inner flow passage.
Preferably, the container main body comprises a cylinder body with upper and lower ends open, a top cover and a bottom seal, the filler neck is arranged on the side surface of the cylinder body, and the diversion ring cavity assembly is arranged in the cylinder body;
the cylinder body is provided with a flange section which is integrally connected to the upper end face of the cylinder body, and the peripheral surface of the flange section is connected with the peripheral side face of the cylinder body; the top cover is connected to the flange section in a sealing manner, the bottom seal is connected to the lower end of the cylinder in a sealing manner, and the upper end and the lower end of the cylinder are respectively sealed.
Preferably, the top cover is a hemispherical sealing head with a flange ring at the periphery, the flange ring is matched on the flange section, a plurality of groups of fastening components are circumferentially arranged along the flange ring and locked on the flange ring and the flange section.
Preferably, the top cover is provided with a plurality of control rod driving mechanism tube seats and a pile testing connecting tube; the control rod driving mechanism tube seat and the pile measuring connecting tube are arranged at intervals and are vertically connected to the top cover.
Preferably, the cylinder comprises a connecting pipe section cylinder and a reactor core section cylinder which are connected in an axial direction; the flange section is connected to the upper end of the pipe connecting section cylinder, and the bottom seal is connected to the lower end of the reactor core section cylinder;
the filler neck is arranged on the pipe connecting section cylinder body, and the flow guide annular cavity component is arranged in the pipe connecting section cylinder body.
Preferably, a plurality of support keys are arranged in the reactor core section cylinder body; the plurality of support keys are symmetrically arranged on the inner wall surface of the reactor core section cylinder body, which is close to the bottom seal.
Preferably, the guide ring cavity assembly comprises a guide ring body; the upper end and the lower end of the guide ring body are respectively connected to the inner wall of the container main body.
Preferably, the flow guiding ring cavity assembly further comprises a corrugated pipe, and the corrugated pipe is arranged between the lower end and/or the lower end of the flow guiding ring body and the inner wall of the container main body.
Preferably, the side surface of the container main body is also provided with at least one pipe connecting port penetrating to the flow guide ring cavity assembly, and the periphery of the pipe opening of the pipe connecting port is provided with an annular boss; the guide ring cavity assembly is provided with an interface which is communicated with the connecting pipe port in a relative way;
the connecting pipe mouth and the connecting pipe mouth are positioned at the same axial height on the container main body.
Preferably, the reactor pressure vessel further comprises at least one injection and/or shower pipe; the injection pipe and/or the spray pipe are/is inserted into the pipe connecting port, and one end of the injection pipe and/or the spray pipe penetrates through the pipe connecting port to be connected to the interface of the flow guide ring cavity assembly; the interface and one end of the injection pipe and/or the spray pipe are/is provided with a connecting pipe boss for sealing and connecting the two.
The invention also provides a working method of the reactor pressure vessel, which comprises the following steps:
the coolant of the first loop enters the internal flow passage in the container main body after being pressurized by the main pump, flows through the reactor core along the internal flow passage and flows out of the internal flow passage to enter the steam generator;
the coolant exchanges heat in the steam generator and then enters the guide ring cavity in the container main body; the coolant flows along the pilot ring cavity and out of the pilot ring cavity back to the main pump.
The invention has the beneficial effects that: through setting up the interior connecting tube cooperation in water conservancy diversion ring chamber subassembly and the filler neck in the container, save traditional trunk line structure for pressure vessel can hug closely the butt joint with steam generator and main pump, reduced the interval between the main equipment, make the arrangement of first circuit coolant system equipment compacter, satisfy compact arrangement requirement, thereby be applicable to small-size heap in the sea.
In addition, the flange ring is arranged in the pressure vessel by adopting a reverse flange design, so that the outer diameter of the flange is reduced, the peripheral operation space of the reactor pressure vessel is increased, and the welding and daily operation and maintenance in the manufacturing process are facilitated; the safety reliability margin of the reactor pressure vessel is enhanced, and the sealing performance is superior to that of the forward flange, so that the sealing reliability of the reactor pressure vessel V is ensured under various ocean load working conditions.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic cross-sectional view of a reactor pressure vessel in one direction according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a reactor pressure vessel according to an embodiment of the present invention in another direction.
Detailed Description
For a clearer understanding of technical features, objects and effects of the present invention, a detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in fig. 1, a reactor pressure vessel according to an embodiment of the present invention includes a closed vessel body 10, a baffle ring cavity assembly 20, and at least one inner connecting tube 30. At least one filler neck 40 is provided on the side of the container body 10, and the deflector ring cavity assembly 20 is axially disposed within the container body 10.
The upper end of the deflector ring chamber assembly 20 is connected to the inner wall of the container body 10 above the filler neck 40, and the lower end is connected to the inner wall of the container body 10 below the filler neck 40. The inner nipple 30 is disposed in the filler neck 40, with one end connected to the deflector ring cavity assembly 20 and the other end corresponding to the orifice of the filler neck 40. Wherein the internal passage of the inner tube 30, the internal passage of the guide ring cavity assembly 20 and the internal space of the container body 10 are communicated to form an internal flow passage 101; the space between the outer circumference of the guide ring cavity assembly 20, the outer circumference of the inner adapter tube 30 and the inner wall of the corresponding container body 10 forms a guide ring cavity 102; the guide ring cavity 102 is located on the outer ring of the inner flow channel 101 and is isolated from the inner flow channel 101.
The filler neck 40 can be closely abutted with the steam generator and the main pump through the inner connecting pipe 30, so that a main pipeline structure between main equipment is omitted, the distance between the main equipment is reduced, and the compact arrangement requirement is met, therefore, the pressure vessel is suitable for ocean working conditions and can be used for offshore small stacks.
The container body 10 includes a cylinder 11 with open upper and lower ends, a top cover 12, and a bottom seal 13, wherein the top cover 12 and the bottom seal 13 are respectively connected to the upper and lower ends of the cylinder 11 in a sealing manner, and the upper and lower ends of the cylinder 11 are sealed to form a sealed container body 10.
Specifically, the cylinder 11 is provided with a flange section 50, and the top cover 12 is connected to the flange section 50 in a sealing manner. The flange section 50 is integrally connected to the upper end face of the cylinder 11, and the peripheral face of the flange section 50 is connected with the peripheral side face of the cylinder 11, so that the flange section 50 is reversely arranged in the peripheral forward direction compared with the flange on the traditional pressure vessel, the flange outer diameter of the pressure vessel is reduced, the peripheral operation space of the pressure vessel of the reactor is enlarged, and the welding and daily operation and maintenance in the manufacturing process are facilitated.
The flange section 50 may have an outer diameter that is the same as or slightly larger than the outer diameter of the upper end of the adjoining barrel 11.
In this embodiment, the top cover 12 is a hemispherical end socket with a flange ring at the periphery, the flange ring of the top cover 12 is matched with the flange section 50, the matching surfaces of the flange ring and the flange ring are provided with sealing rings, and multiple groups of fastening components 14 such as bolt components are circumferentially arranged along the flange ring and are locked on the flange ring and the flange section 50, so that the top cover 12 is fastened on the cylinder 11. Due to the arrangement of the flange section 50 on the cylinder 11, the diameter of the sealing ring and the diameter of the isocentric circle of the fastening component 14 such as a bolt component can be reduced, and meanwhile, the pretightening force and the axial separation amount of the required fastening component 14 such as the bolt component are smaller, so that the sealing performance is better than that of a forward flange.
The top cover 12 is forged from a unitary forging.
The top cover 12 is further provided with a plurality of Control Rod Drive Mechanism (CRDM) sockets 60 and stack test takeover tubes 70. The control rod driving mechanism tube base 60 and the stack connecting tube 70 are arranged at required intervals and are vertically connected to the top cover 12 by means of cold-pack J-seam welding.
The bottom seal 13 may be composed of an elliptical seal head and a straight edge section connected to the periphery of the elliptical seal head, the straight edge section is connected with the cylinder 11, and the two sections may be integrally formed by welding.
Further, the barrel 11 includes an axially joined nozzle segment barrel 111 and core segment barrel 112. The height of the core segment cylinder 112 is greater than the height of the nozzle segment cylinder 111 in axial height, with the interior space of the core segment cylinder 112 acting as the core main cavity.
The flange section 50 is connected to the upper end of the pipe section cylinder 111, and the flange section 50 and the pipe section cylinder 111 can be formed into an integral structure through integral forging, so that saddle-shaped girth welds formed by welding are reduced, the safety and reliability of the pipe section cylinder 111 of the reactor pressure vessel are improved, and meanwhile, the in-service inspection workload is reduced.
The bottom seal 13 is attached to the lower end of the core section barrel 112.
A plurality of support keys 15 are further provided within the core barrel 112. A plurality of support keys 15 are symmetrically arranged on the inner wall surface of the core segment cylinder 112 near the bottom seal 13 for fixing the core support plate within the cylinder 11.
On the container body 10, the filler neck 40 is provided mainly on the side of the cylinder 11, specifically, the filler neck 40 is provided on the pipe segment cylinder 111. The tube-receiving section cylinder 111 is manufactured from a unitary forging, is given a reasonable forging ratio, and is machined with the filler neck 40. The nozzle of the filler neck 40 protrudes from the side of the cartridge 11.
Typically, the filler neck 40 is provided with four, one for each of a circuit inlet and a circuit outlet; an inner nipple 30 is provided in each nipple 40. The two inlets of the first loop are symmetrically arranged, and the two outlets of the first loop are symmetrically arranged.
The flow guiding annular cavity assembly 20 is arranged on the inner wall of the cylinder 11 in the container main body 10, and is specifically arranged in the pipe connecting section cylinder 111. The baffle ring cavity assembly 20 may include a baffle ring body 21; the guide ring body 21 has a cylindrical structure with a certain height, and the upper end and the lower end of the guide ring body are respectively connected to the inner wall of the cylinder 11.
Specifically, the upper end of the guide ring body 21 is fixed on the inner wall of the pipe section cylinder 111 through a positioning pin and is plug-welded for preventing the separation, and the lower end of the guide ring body 21 is fixed on the inner wall of the pipe section cylinder 111 through a positioning pin and is plug-welded for preventing the separation.
The baffle ring cavity assembly 20 may further include a bellows 22, where the bellows 22 is disposed between the lower end and/or the lower end of the baffle ring body 21 and the inner wall of the container body 10, and connects the upper end and the lower end of the baffle ring body 21 with the corresponding inner wall in a sealing manner, so as to completely isolate the inner flow channel 101 from the baffle ring cavity 102. The bellows 22 has thermal expansion properties while sealing. Of course, the bellows 22 may be replaced with a seal ring.
In the present embodiment, as shown in fig. 1, the bellows 22 is welded between the lower end of the baffle ring 21 and the inner wall of the pipe section cylinder 111.
The inner nipple 30 is transversely disposed within the nipple 40, with one end connected to the deflector ring cavity assembly 20 and the other end corresponding to the orifice of the nipple 40. An opening of the inner flow passage 101 is formed corresponding to an end port of the inner tube 30 at the mouth of the filler neck 40 for the coolant to pass into and out of the inner flow passage 101. An opening of the deflector ring chamber 102 is formed corresponding to an annular space between the outer periphery of one end of the inner tube 30 at the mouth of the filler neck 40 and the mouth of the tube, for the coolant to pass into and out of the deflector ring chamber 102.
In addition, in the present invention, referring to fig. 1 and 2, at least one nozzle 16 is provided on the side of the container body 10 for inserting the injection tube and/or the shower tube. The filler neck 16 is mainly provided on the filler neck tube 111 of the tube 11 at the same axial height as the filler neck 40 on the container body 10.
The nozzle periphery of the nozzle 16 is provided with an annular boss 17. The annular boss 17 is located on the side of the cylinder 11 and can be formed by direct machining of thickened annulus material on the cylinder 11.
The nozzle 16 penetrates through the guide ring cavity assembly 20, and an interface which is communicated with the nozzle 16 is arranged on the guide ring cavity assembly 20, so that the injection pipe and/or the spray pipe can pass through the nozzle 16 to be connected to the interface of the guide ring cavity assembly 20 and be communicated with the inside of the guide ring cavity assembly 20.
The annular boss 17 can be further connected with an annular safety end 18 in a welding mode, and the axial length of the safety end 18 is larger than the height of the annular boss 17 on the side face of the cylinder 11. The safety end 18 replaces the socket and spigot girth weld for welding the injection pipe 80 and/or the spray pipe with the cylinder, and improves the safety and reliability of the reactor pressure vessel pipe joint section cylinder.
Further, the reactor pressure vessel of the present invention may also include at least one injection tube 80 and/or shower tube. The injection pipe 80 and/or the spray pipe are/is inserted into the pipe connection port 16, and one end of the injection pipe passes through the pipe connection port 16 and is connected to the interface of the diversion ring cavity assembly 20. One end of the interface, the injection pipe 80 and/or the spray pipe is provided with a connecting pipe boss 23 for sealing and connecting the interface and the injection pipe 80 and/or the spray pipe.
The adapter boss 23 may be formed by build-up welding. Specifically, taking the injection pipe 80 as an example, one end of the injection pipe 80 sequentially penetrates into the annular boss 17 and the pipe connecting port 16 until being inserted into the interface of the flow guiding annular cavity assembly 20, and surfacing is performed on the periphery of the interface, so that one end of the injection pipe 80 is sealed on the interface. The core in the vessel body 10 is injected with water through the injection pipe 80 in the event of a serious accident, thereby realizing a basic safety function of core flooding.
The working method of the reactor pressure vessel comprises the following steps:
the coolant of the first circuit enters the internal flow passage 101 through the openings of the internal flow passage 101 on the inner connecting pipe 30 in the two symmetrically arranged connecting pipe nozzles 40 after being pressurized by the main pump; after flowing through the core along the internal flow channel 101, the coolant flows out of the internal flow channel 101 through the openings of the internal flow channel 101 in the other two symmetrically disposed filler neck 40 and into the steam generator.
The coolant enters the guide ring cavity 102 through the openings of the guide ring cavities 102 in the two symmetrically arranged filler neck 40 after heat exchange in the steam generator; the coolant flows along the deflector ring cavity 102 and out of the deflector ring cavity 102 through the openings of the deflector ring cavities 102 in the other two symmetrically disposed filler neck 40 back to the main pump, thereby completing the circulation of the primary circuit coolant.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (8)
1. A reactor pressure vessel characterized by comprising a closed vessel body (10), a deflector ring cavity assembly (20) and at least one inner connecting tube (30); at least one filler neck (40) is arranged on the side surface of the container main body (10), and the diversion ring cavity assembly (20) is axially arranged in the container main body (10);
the upper end of the diversion ring cavity assembly (20) is positioned above the filler neck (40) and connected to the inner wall of the container main body (10), and the lower end of the diversion ring cavity assembly (20) is positioned below the filler neck (40) and connected to the inner wall of the container main body (10); the inner connecting pipe (30) is arranged in the connecting pipe mouth (40), one end of the inner connecting pipe is connected to the diversion ring cavity assembly (20), and the other end of the inner connecting pipe corresponds to the pipe mouth of the connecting pipe mouth (40);
the inner channel of the inner connecting pipe (30), the inner channel of the diversion ring cavity assembly (20) and the inner space of the container main body (10) are communicated to form an inner flow channel (101); the space among the periphery of the diversion ring cavity assembly (20), the periphery of the inner connecting tube (30) and the inner wall of the corresponding container main body (10) forms a diversion ring cavity (102); the guide ring cavity (102) is positioned on the outer ring of the inner flow channel (101) and isolated from the inner flow channel (101);
the container main body (10) comprises a cylinder body (11) with upper and lower ends open, a top cover (12) and a bottom seal (13), the filler neck (40) is arranged on the side surface of the cylinder body (11), and the flow guide ring cavity assembly (20) is arranged in the cylinder body (11);
the cylinder body (11) is provided with a flange section (50), the flange section (50) is integrally connected to the upper end face of the cylinder body (11), and the peripheral surface of the flange section (50) is connected with the peripheral side face of the cylinder body (11); the top cover (12) is connected to the flange section (50) in a sealing way, the bottom seal (13) is connected to the lower end of the cylinder body (11) in a sealing way, and the upper end and the lower end of the cylinder body (11) are respectively sealed;
the guide ring cavity assembly (20) comprises a guide ring body (21) and a corrugated pipe (22); the upper end and the lower end of the guide ring body (21) are respectively connected to the inner wall of the container main body (10); the corrugated pipe (22) is arranged between the lower end and/or the lower end of the guide ring body (21) and the inner wall of the container main body (10).
2. Reactor pressure vessel according to claim 1, wherein the top cover (12) is a hemispherical head provided peripherally with a flange ring fitted over the flange section (50), a plurality of sets of fastening assemblies (14) being arranged circumferentially along the flange ring, locking onto the flange ring and the flange section (50).
3. The reactor pressure vessel of claim 1 wherein the top cover (12) is provided with a plurality of control rod drive mechanism sockets (60) and a stack measurement nipple (70); the control rod driving mechanism tube seat (60) and the pile testing connecting tube (70) are arranged at intervals and are vertically connected to the top cover (12).
4. The reactor pressure vessel of claim 1 wherein the barrel (11) comprises an axially joined nozzle segment barrel (111) and core segment barrel (112); the flange section (50) is connected to the upper end of the pipe section cylinder (111), and the bottom seal (13) is connected to the lower end of the reactor core section cylinder (112);
the filler neck (40) is arranged on the pipe section cylinder (111), and the diversion ring cavity assembly (20) is arranged in the pipe section cylinder (111).
5. The reactor pressure vessel of claim 4 wherein a plurality of support keys (15) are provided within the core segment cylinder (112); the plurality of support keys (15) are symmetrically arranged on the inner wall surface of the reactor core section cylinder (112) close to the bottom seal (13).
6. Reactor pressure vessel according to any of claims 1-5, characterized in that at least one nozzle (16) is also provided on the side of the vessel body (10) penetrating into the flow ring chamber assembly (20), the nozzle periphery of the nozzle (16) being provided with an annular boss (17); an interface which is communicated with the connecting pipe port (16) relatively is arranged on the diversion ring cavity assembly (20);
the connecting pipe mouth (16) and the connecting pipe mouth (40) are positioned at the same axial height on the container main body (10).
7. The reactor pressure vessel of claim 6, further comprising at least one safety injection pipe (80) and/or shower pipe; the injection pipe (80) and/or the spray pipe are/is inserted into the pipe connecting opening (16), and one end of the injection pipe passes through the pipe connecting opening (16) to be connected to the interface of the flow guide ring cavity assembly (20); the interface is provided with a connecting pipe boss (23) at one end of the injection pipe (80) and/or the spray pipe to connect the two in a sealing way.
8. A method of operating a reactor pressure vessel as claimed in any one of claims 1 to 7, comprising the steps of:
a loop coolant enters an internal flow passage (101) in the container body (10) after being pressurized by the main pump, flows through the reactor core along the internal flow passage (101) and then flows out of the internal flow passage (101) to enter the steam generator;
the coolant passes through a diversion ring cavity (102) in the container main body (10) after heat exchange in the steam generator; the coolant flows along the diversion ring cavity (102) and then flows out of the diversion ring cavity (102) to return to the main pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711457701.8A CN108257684B (en) | 2017-12-28 | 2017-12-28 | Reactor pressure vessel and method for operating the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711457701.8A CN108257684B (en) | 2017-12-28 | 2017-12-28 | Reactor pressure vessel and method for operating the same |
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| Publication Number | Publication Date |
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| CN108257684A CN108257684A (en) | 2018-07-06 |
| CN108257684B true CN108257684B (en) | 2023-10-31 |
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| CN108711458B (en) * | 2018-07-18 | 2024-03-22 | 中广核研究院有限公司 | Reactor pressure vessel and support device for pressure vessel outlet nozzle |
| CN108806807A (en) * | 2018-07-20 | 2018-11-13 | 中广核研究院有限公司 | A kind of small-sized heap primary Ioops main equipment structure of novel compact Layout |
| CN108922643A (en) * | 2018-07-20 | 2018-11-30 | 中广核研究院有限公司 | A kind of small-sized heap reactor-loop overall structure of compact Layout |
| CN109256220B (en) * | 2018-09-20 | 2020-07-07 | 中广核研究院有限公司 | Stabiliser and connection structure of flow distribution cover and heat protection sleeve thereof |
| CN109887622A (en) * | 2019-03-06 | 2019-06-14 | 中广核研究院有限公司 | A kind of reactor and the flow passage structure for reactor |
| 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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