CN112635084A - Sodium leakage receiving and inhibiting device for sodium-cooled fast reactor pit - Google Patents
Sodium leakage receiving and inhibiting device for sodium-cooled fast reactor pit Download PDFInfo
- Publication number
- CN112635084A CN112635084A CN202011430575.9A CN202011430575A CN112635084A CN 112635084 A CN112635084 A CN 112635084A CN 202011430575 A CN202011430575 A CN 202011430575A CN 112635084 A CN112635084 A CN 112635084A
- Authority
- CN
- China
- Prior art keywords
- sodium
- pit
- supporting
- top cover
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 title claims abstract description 82
- 229910052708 sodium Inorganic materials 0.000 title claims abstract description 82
- 239000011734 sodium Substances 0.000 title claims abstract description 82
- 230000002401 inhibitory effect Effects 0.000 title claims abstract description 40
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 230000002093 peripheral effect Effects 0.000 claims description 39
- 238000003466 welding Methods 0.000 claims description 16
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 13
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 13
- 241001330002 Bambuseae Species 0.000 claims description 13
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 13
- 239000011425 bamboo Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 11
- 230000005484 gravity Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 8
- 238000005253 cladding Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 229910001338 liquidmetal Inorganic materials 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 229910000619 316 stainless steel Inorganic materials 0.000 description 1
- 206010000369 Accident Diseases 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000272168 Laridae Species 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C9/00—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices
- G21C9/04—Means for suppressing fires ; Earthquake protection
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention belongs to the technical field of reactor safety, and particularly relates to a sodium leakage receiving and inhibiting device for a sodium-cooled fast reactor pit, which is arranged on a steel covering surface forming the pit (3), and comprises a plurality of supporting cylinders which are concentrically arranged by taking the circle center of the pit (3) as the center and a plurality of top cover plates (4) which are hermetically covered on the tops of the supporting cylinders, wherein each top cover plate (4) is provided with a drain outlet (5), and liquid sodium leaked on the top cover plates (4) can enter a collecting space formed by the top cover plates (4), the supporting cylinders and the steel covering surface from the drain outlets (5). The invention can meet the basic functions of receiving sodium leakage and inhibiting sodium fire, can also meet the safety function under the earthquake load condition, can be installed after the gas heating pipeline of the reactor body is dismantled, and can ensure that installers can safely evacuate.
Description
Technical Field
The invention belongs to the technical field of reactor safety, and particularly relates to a sodium leakage receiving and inhibiting device for a sodium-cooled fast reactor pit.
Background
The sodium-cooled fast reactor adopts liquid metal sodium as a coolant. Most of coolant sodium in a reactor primary loop is sealed in a reactor main container, and a layer of protective container is arranged outside the reactor main container. Normally, molten metal sodium does not leak out of the main container and the protective container, but in an extreme accident condition, sodium leakage and sodium fire accidents caused by the rupture of the boundary of the main container and the protective container can occur. The leaking sodium flows into the pile pit, may damage the additional structure of the pile container, and in severe cases may cause the whole pile body to collapse, thus aggravating the accident result. In addition, sodium flowing into the pit burns to produce a large quantity of sodium aerosol with strong radioactivity, which may cause the radioactive containment to fail. In order to cope with the situation that sodium flows into the pile pit under the extreme accident condition, strict precautionary measures are required.
To deal with the large sodium leakage, a sodium receiving disk system is generally adopted to receive the leaked sodium, and the sodium receiving disk system can extinguish the sodium fire. The gull et al, the institute of atomic energy science in china, has proposed a sodium leakage receiving and suppressing device (patent publication No. CN101231896A) for receiving leaked liquid metal sodium and suppressing sodium fire, which is used in a primary and secondary sodium circuit equipment room where large sodium leakage may occur. The working principle of the sodium receiving disc system is as follows: the leaked sodium is received into the sodium receiving disc, and a large amount of sodium is isolated from being directly contacted with air, so that the aim of inhibiting the combustion of the sodium is fulfilled. Such sodium receiving tray systems have been used in sodium circuit rooms in fast neutron reactor plants. The sodium leakage receiving and inhibiting device provided by the invention is formed by splicing and combining a plurality of inhibiting discs with independent structures, and has the characteristic of flexible installation and disassembly. However, the sodium leakage receiving and inhibiting device in the pile pit has high requirements on the type of earthquake resistance due to the fact that the sodium leakage receiving and inhibiting device belongs to nuclear safety equipment, and the requirements cannot be met under the earthquake load condition if an installation mode that a single sodium leakage disc splicing structure is spliced and directly placed on a steel cover face is adopted. In addition, the spliced sodium leakage receiving restraining disc structure is not suitable to be adopted under the conditions of pit stacking installation and special environment, and the disassembly requirement is not required.
Disclosure of Invention
In view of the above problems, the present invention provides a pit sodium leakage receiving and inhibiting device with an integral structure, which can adopt a structure and an installation mode that are welded and fixed with a steel cladding structure, and meets the basic functions of receiving sodium leakage and inhibiting sodium fire, and simultaneously meets the safety function under earthquake load conditions.
In order to achieve the purpose, the technical scheme adopted by the invention is that the sodium leakage receiving and inhibiting device for the sodium-cooled fast reactor pit is arranged on a steel clad surface forming the pit, wherein the sodium leakage receiving and inhibiting device comprises a plurality of supporting cylinders which are concentrically arranged by taking the circle center of the pit as the center and a plurality of top cover plates which are hermetically covered on the tops of the supporting cylinders, each top cover plate is provided with a drain outlet, and liquid sodium leaked on the top cover plate can enter a collecting space formed by the top cover plate, the supporting cylinders and the steel clad surface from the drain outlets.
Further, the supporting cylinders comprise a central supporting cylinder positioned at the innermost side and a plurality of peripheral supporting cylinders surrounding the periphery of the central supporting cylinder, the central supporting cylinder is a straight cylinder, the peripheral supporting cylinders are straight cylinders provided with openings, the openings are arranged at the same position, and the openings are used for arranging an air duct cover plate; the lower part of the supporting cylinder is connected with the steel covering surface and the keel of the steel covering surface in a welding mode.
Furthermore, a first drainage pipe is arranged on the outer sides of the cylinder walls of the central supporting cylinder and the peripheral supporting cylinder, a top end opening of the first drainage pipe is connected with the drainage port in the top cover plate, a bottom end opening of the first drainage pipe is not in contact with the steel clad surface of the pile pit, and liquid sodium leaked on the top cover plate can enter the collection space from the drainage port through the first drainage pipe.
Further, the bottom of the wall of the peripheral supporting cylinder positioned at the outermost side is hermetically connected with the steel clad surface of the pile pit; besides the peripheral supporting barrel on the outermost side, notches are formed in the barrel walls of the central supporting barrel and the other peripheral supporting barrels and are positioned at the bottom end opening of the first drainage pipe, and the notches are communicated with spaces among the supporting barrels.
Further, the cross section of the first drainage pipe is semicircular, and the notch is rectangular.
Further, the top cover plate is arranged at the top of each support cylinder and located between two adjacent support cylinders, the top cover plates are connected with each other in a sealing mode through welding, and the top cover plates are connected with the support cylinders in a sealing mode through welding.
Furthermore, a support lug is arranged at the top of the support cylinder, and the top cover plate is welded at the top of the support cylinder through the support lug; the outer side of the top of the central supporting cylinder is provided with the support lug, the inner side of the top of the outer peripheral supporting cylinder at the outermost side is provided with the support lug, and the inner side and the outer side of the top of the outer peripheral supporting cylinder between the central supporting cylinder and the outer peripheral supporting cylinder at the outermost side are both provided with the support lug.
Further, the top cover plate is of a fan-shaped structure and inclines towards one side of the drain outlet, and liquid sodium leaked on the top cover plate can flow into the drain outlet under the action of gravity; the top cover plate is provided with a plurality of handles.
Further, the top of a center support section of thick bamboo is equipped with central funnel, first blow off pipe is connected to the lower extreme of central funnel, leaks and is in liquid sodium on the central funnel can flow into under the action of gravity first blow off pipe gets into in the collection space, central funnel with the top of a center support section of thick bamboo is through welding sealing connection.
Furthermore, a supporting structure is arranged on the outer side of the peripheral supporting barrel on the outermost side and used for supporting the top cover plate between the side wall of the stack pit and the peripheral supporting barrel on the outermost side, and the top cover plate is connected with the side wall of the stack pit in a sealing mode through welding.
The invention has the beneficial effects that:
because the invention provides a receiving and inhibiting device for sodium leakage of a pile pit, which adopts an integral structure and a structure and an installation mode that the receiving and inhibiting device is welded and fixed with a steel cladding structure, the basic functions of receiving sodium leakage and inhibiting sodium fire are met, and simultaneously, the safety function under the earthquake load condition can also be met, because the top cover plate 4 adopts a special funnel-shaped structural design, the receiving and inhibiting device can be installed after a gas heating pipeline of a pile body is dismantled, and installation personnel can safely withdraw.
Drawings
Fig. 1 is a top view of a sodium leakage receiving and inhibiting device for a sodium-cooled fast reactor pit according to an embodiment of the invention;
FIG. 2 is a view from A-A of FIG. 1;
FIG. 3 is a schematic view of a core holder 1 according to an embodiment of the invention;
FIG. 4 is a view from the A-A direction of FIG. 3;
FIG. 5 is a schematic view of a peripheral support cartridge 2 according to an embodiment of the present invention;
FIG. 6 is a view from the B-B direction of FIG. 5;
FIG. 7 is a schematic view of the top closure 4 (attached to the core support basket 1) according to an embodiment of the present invention;
FIG. 8 is a view from the A-A direction of FIG. 7;
FIG. 9 is a schematic view of the top cover 4 (attached to the duct cover 6) in accordance with an embodiment of the present invention;
FIG. 10 is a view from the B-B direction of FIG. 9;
FIG. 11 is a schematic view of a support structure 12 according to an embodiment of the present invention;
in the figure: 1-central supporting cylinder, 2-peripheral supporting cylinder, 3-pile pit, 4-top cover plate, 5-discharge port, 6-air duct cover plate, 7-first discharge pipe, 8-notch, 9-lug, 10-central funnel, 11-second discharge pipe, 12-supporting structure and 13-handle.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1 and 2, the sodium leakage receiving and inhibiting device for the sodium-cooled fast reactor pit provided by the invention is arranged on a steel clad surface forming the pit 3, wherein the sodium leakage receiving and inhibiting device comprises a plurality of supporting cylinders which are concentrically arranged by taking the center of the pit 3 as the center and a plurality of top cover plates 4 which are hermetically covered on the tops of the supporting cylinders, each top cover plate 4 is provided with a drain outlet 5, liquid sodium leaked on the top cover plates 4 can enter a collecting space formed by the top cover plates 4, the supporting cylinders and the steel clad surface from the drain outlets 5, and the supporting cylinders, the top cover plates 4 and the steel clad surface form a sealed container with communicated internal space for inhibiting the combustion of metal sodium.
The supporting cylinders comprise a central supporting cylinder 1 positioned at the innermost side and a plurality of peripheral supporting cylinders 2 surrounding the periphery of the central supporting cylinder 1, the central supporting cylinder 1 is a straight cylinder (shown in figures 3 and 4), the peripheral supporting cylinders 2 are straight cylinders provided with openings (shown in figures 5 and 6), the openings are arranged at the same position, the openings are used for arranging an air duct cover plate 6 and are used for placing stack pit bottom air supply pipes, and the stack pit bottom air supply pipes extend into the stack pit from the 90-degree direction; the lower part of the supporting cylinder is connected with the steel covering surface and the keel of the steel covering surface in a welding mode.
The section of thick bamboo wall outside of a section of thick bamboo 1 and a peripheral support section of thick bamboo 2 is equipped with first drainage pipe 7, and the top end opening of first drainage pipe 7 links to each other with drain outlet 5 on the top apron 4, and the bottom opening of first drainage pipe 7 does not contact with the steel clad surface of piling pit 3, and the liquid sodium that leaks on top apron 4 can follow drain outlet 5 and get into in the collection space that top apron 4, a support section of thick bamboo and steel clad surface constitute through first drainage pipe 7.
The bottom of the wall of the peripheral supporting cylinder 2 positioned at the outermost side is hermetically connected with the steel clad surface of the pile pit 3 (without a gap); except for the outermost peripheral supporting barrel 2, notches 8 are formed in the barrel walls of the central supporting barrel 1 and the rest peripheral supporting barrels 2 at the positions of the bottom end openings of the first drainage pipes 7, and the gaps 8 are communicated with the spaces among the supporting barrels.
The cross section of the first drain pipe 7 is semicircular, and the notch 8 is rectangular.
The top cover plate 4 is arranged at the top of each supporting cylinder and positioned between two adjacent supporting cylinders, the top cover plates 4 are connected through welding and sealing, and the top cover plates 4 are connected with the supporting cylinders through welding and sealing.
The top of the supporting cylinder is provided with a support lug 9, and the top cover plate 4 is welded on the top of the supporting cylinder through the support lug 9; the outer side of the top of the central supporting cylinder 1 is provided with a support lug 9, the inner side of the top of the peripheral supporting cylinder 2 at the outermost side is provided with the support lug 9, and the inner side and the outer side of the top of the peripheral supporting cylinder 2 between the central supporting cylinder 1 and the peripheral supporting cylinder 2 at the outermost side are both provided with the support lugs 9.
As shown in fig. 7, 8, 9 and 10, the top cover plate 4 has a fan-shaped structure, and is inclined toward the drain opening 5, so that the liquid sodium leaked on the top cover plate 4 can flow into the drain opening 5 under the action of gravity; the top cover plate 4 is provided with a plurality of lifting handles 13 which play a role in lifting the top cover plate 4 in the installation process; the size and form of the top cover plate 4 need to be designed according to the size of the stack pit 3 and the size of the supporting cylinder, and the top cover plate can be a cover plate with various sizes and forms.
The top of a central supporting cylinder 1 is provided with a central funnel 10, the lower end of the central funnel 10 is connected with a second drainage pipe 11, liquid sodium leaked on the central funnel 10 can flow into the second drainage pipe 11 under the action of gravity to enter a collecting space formed by a top cover plate 4, a supporting cylinder and a steel cover surface, and the central funnel 10 is connected with the top of the central supporting cylinder 1 in a welding and sealing manner.
As shown in fig. 1 and 11, a support structure 12 is provided at the outer side of the outermost peripheral support cylinder 2 for supporting the top cover plate 4 between the side wall of the stack pit 3 and the outermost peripheral support cylinder 2, and the top cover plate 4 and the side wall of the stack pit 3 are hermetically connected by welding.
The sodium leakage receiving and inhibiting device for the sodium-cooled fast reactor pit also needs to avoid other system equipment, pipelines and embedded parts interfering with the sodium leakage receiving and inhibiting device and reserve a space.
Example (b):
the size of the stack pit 3 is phi 12000mm, as shown in fig. 1, a stack pit bottom air supply pipe extends into the stack pit 3 in the 90-degree direction, the total width of the air supply pipe and the supporting piece is about 1200mm, the end part of the air supply pipe is 980mm away from the center of the stack pit, and a space needs to be reserved for the stack pit bottom air supply pipe by the sodium leakage receiving and inhibiting device. Therefore, the air duct cover plate 6 with the width of 1800mm is arranged in the 90-degree direction of the stack pit, and the air duct cover plate 6 is not provided with a discharge hole for discharging sodium.
Five supporting cylinders with different specifications are designed according to the size of the pile pit 3, the inner diameter of a central supporting cylinder 1 is 1480mm, the inner diameters of other peripheral supporting cylinders 2 are 2980mm, 5580mm, 8180mm and 10780mm from inside to outside in sequence, the thickness of each supporting cylinder is 10mm, and the height of each supporting cylinder is 700 mm; the axes of the five supporting cylinders coincide with the axis of the bottom of the pile pit, and the lower parts of the supporting cylinders are welded with the steel cladding and the steel cladding keel. The outer side of the central supporting cylinder 1 is provided with 7 support lugs 9, the inner side of the outermost peripheral supporting cylinder 2 is provided with 31 support lugs 9, and the inner side and the outer side of the periphery of other peripheral supporting cylinders 2 are respectively provided with 20, 30 and 44 support lugs 9.
The top cover plate 4 is of a fan-shaped structure and is arranged on the upper portion of the barrel body, the lug 9 of the top cover plate is welded with the barrel body of the supporting barrel, the thickness of the top cover plate 4 is 10mm, the top cover plate types are 15 structural sizes in total according to the size of the supporting barrel body and the arrangement of the top cover plate 4, and the total number of the top cover plate 4 is 100 fan-shaped. The outer side of the outermost peripheral support cylinder 2 (the peripheral support cylinder 2 adjacent to the pit 3) is provided with a support structure 12 for supporting the outermost peripheral top cover plate 4. The top cover plates 4 of the blocks are connected by welding. The top cover plate 4 has a certain inclination after being installed, the high inner side of the outer side is low, the drain outlet 5 communicated with the drain pipe (the first drain pipe 7 and the second drain pipe 11) is arranged on the lower side of the elevation, and the metal sodium can conveniently flow into the sodium leakage receiving and inhibiting device. The first drain pipe 7 is
The semicircular pipe is welded at the outer side of the supporting cylinder; at the bottom opening of each first drainage pipe 7, the lower part of each supporting cylinder is provided with a notch 8 with the width of 40mm and the height of 30mm, and 5 supporting cylinders, a top cover plate 4 and a steel cover surface form a sealed container with communicated inner space for inhibiting the combustion of the metal sodium.
The upper part of the central supporting cylinder 1 is a central leakThe inner diameters of the hopper 10, the outer ring of the central funnel 10 and the central supporting cylinder 1
The cylinder body of the central funnel 10 is welded, and the center of the central funnel is
The bottom of the second drainage pipe 11 is provided with a notch 8.
The main material used may be stainless steel, such as 304 stainless steel, 316 stainless steel, etc., in view of the failure of the pit bottom sodium receiving and inhibiting device to be replaced or maintained during the normal operating life of the reactor.
The sodium leakage receiving and inhibiting device is an on-site manufacturing device which is arranged at the lower part of a reactor pit 3 of a reactor hall. Before the stack body is installed, all parts such as the support cylinders, the top cover plate 4 and the like are conveyed into the bottom of the stack pit 3 for placing; a supporting cylinder of the sodium leakage receiving and inhibiting device is welded and fixed with a steel cladding system, and the supporting cylinder needs to be installed with a pit steel cladding at the same time. The cartridges may be transported in blocks/sections.
The device according to the present invention is not limited to the embodiments described in the specific embodiments, and those skilled in the art can derive other embodiments according to the technical solutions of the present invention, and also belong to the technical innovation scope of the present invention.
Claims (10)
1. A sodium leakage receiving and inhibiting device for a sodium-cooled fast reactor pit is arranged on a steel cover surface forming a pit (3), and is characterized in that: include with the centre of a circle of heap hole (3) is the center, is a plurality of support cylinder and the sealed cover that the concentric circles form was arranged a plurality of top apron (4) at support cylinder top, every top apron (4) are equipped with drain outlet (5), leak and be in liquid sodium on top apron (4) can be followed drain outlet (5) get into top apron (4) the support cylinder with in the collection space that the steel clad can constitute.
2. The sodium leakage receiving and inhibiting device for the sodium-cooled fast reactor pit as claimed in claim 1, wherein: the supporting cylinders comprise a central supporting cylinder (1) positioned at the innermost side and a plurality of peripheral supporting cylinders (2) surrounding the periphery of the central supporting cylinder (1), the central supporting cylinder (1) is a straight cylinder, the peripheral supporting cylinders (2) are straight cylinders provided with openings, the openings are arranged at the same position, and the openings are used for arranging an air duct cover plate (6); the lower part of the supporting cylinder is connected with the steel covering surface and the keel of the steel covering surface in a welding mode.
3. The sodium leakage receiving and inhibiting device for the sodium-cooled fast reactor pit as claimed in claim 2, wherein: the center support section of thick bamboo (1) with the section of thick bamboo wall outside of a peripheral support section of thick bamboo (2) is equipped with first leakage pipe (7), the top opening of first leakage pipe (7) with on top apron (4) drain hole (5) link to each other, the bottom opening of first leakage pipe (7) with pile hole (3) the steel clad can contactless, leak and be in liquid sodium on top apron (4) can be followed drain hole (5) process in getting into the collection space first leakage pipe (7).
4. The sodium leakage receiving and inhibiting device for the sodium-cooled fast reactor pit as claimed in claim 3, wherein: the bottom of the cylinder wall of the peripheral supporting cylinder (2) positioned at the outermost side is hermetically connected with the steel clad surface of the pile pit (3); besides the peripheral supporting barrel (2) on the outermost side, notches (8) are formed in the positions, located at the bottom end opening of the first drainage pipe (7), of the barrel walls of the central supporting barrel (1) and the rest peripheral supporting barrels (2), and the gaps (8) are communicated with spaces among the supporting barrels.
5. The sodium leakage receiving and inhibiting device for the sodium-cooled fast reactor pit as claimed in claim 3, wherein: the cross section of the first drainage pipe (7) is semicircular, and the notch (8) is rectangular.
6. The sodium leakage receiving and inhibiting device for the sodium-cooled fast reactor pit as claimed in claim 2, wherein: the top cover plates (4) are arranged at the tops of the support cylinders and located between the two adjacent support cylinders, the top cover plates (4) are connected in a sealing mode through welding, and the top cover plates (4) are connected with the support cylinders in a sealing mode through welding.
7. The sodium leakage receiving and inhibiting device for the sodium-cooled fast reactor pit as claimed in claim 6, wherein: a support lug (9) is arranged at the top of the support cylinder, and the top cover plate (4) is welded at the top of the support cylinder through the support lug (9); the top outside of a central support section of thick bamboo (1) is equipped with journal stirrup (9), the outside the top inboard of a peripheral support section of thick bamboo (2) is equipped with journal stirrup (9), is located a central support section of thick bamboo (1) and the outside the peripheral support section of thick bamboo (2) between the top inside and outside all is equipped with journal stirrup (9).
8. The sodium leakage receiving and inhibiting device for the sodium-cooled fast reactor pit as claimed in claim 3, wherein: the top cover plate (4) is of a fan-shaped structure and inclines towards one side of the drain outlet (5), and liquid sodium leaked on the top cover plate (4) can flow into the drain outlet (5) under the action of gravity; the top cover plate (4) is provided with a plurality of handles (13).
9. The sodium leakage receiving and inhibiting device for the sodium-cooled fast reactor pit as claimed in claim 2, wherein: the top of a central supporting cylinder (1) is provided with a central funnel (10), the lower end of the central funnel (10) is connected with a second drainage pipe (11), liquid sodium leaked on the central funnel (10) can flow into the second drainage pipe (11) under the action of gravity to enter the collection space, and the central funnel (10) is connected with the top of the central supporting cylinder (1) in a welding and sealing manner.
10. The sodium leakage receiving and inhibiting device for the sodium-cooled fast reactor pit as claimed in claim 7, wherein: and a supporting structure (12) is arranged on the outer side of the peripheral supporting barrel (2) on the outermost side and used for supporting the top cover plate (4) between the side wall of the stack pit (3) and the peripheral supporting barrel (2) on the outermost side, and the top cover plate (4) is connected with the side wall of the stack pit (3) in a sealing manner through welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011430575.9A CN112635084A (en) | 2020-12-09 | 2020-12-09 | Sodium leakage receiving and inhibiting device for sodium-cooled fast reactor pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011430575.9A CN112635084A (en) | 2020-12-09 | 2020-12-09 | Sodium leakage receiving and inhibiting device for sodium-cooled fast reactor pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112635084A true CN112635084A (en) | 2021-04-09 |
Family
ID=75309000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011430575.9A Pending CN112635084A (en) | 2020-12-09 | 2020-12-09 | Sodium leakage receiving and inhibiting device for sodium-cooled fast reactor pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112635084A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2276663A1 (en) * | 1974-06-25 | 1976-01-23 | Commissariat Energie Atomique | SUPPORT STRUCTURE FOR QUICK NEUTRON NUCLEAR REACTOR CORE |
| CN1067132A (en) * | 1991-05-17 | 1992-12-16 | 法玛通公司 | The device of the nuclear reactor that melts behind recovery and the cooling accident |
| CN101231896A (en) * | 2007-12-11 | 2008-07-30 | 中国原子能科学研究院 | Sodium leakage receiving and inhibiting device |
| KR20110024107A (en) * | 2009-09-01 | 2011-03-09 | 한국원자력연구원 | A broad acoustic leak detector in a steam generator of sodium-cooled fast reactor and method using the same |
| CN102945686A (en) * | 2012-11-02 | 2013-02-27 | 中国核电工程有限公司 | Spent fuel pool state continuous monitoring method and system |
| CN108364699A (en) * | 2018-04-13 | 2018-08-03 | 中广核研究院有限公司 | A kind of reactor pressure vessel for coolant metal fast reactor |
-
2020
- 2020-12-09 CN CN202011430575.9A patent/CN112635084A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2276663A1 (en) * | 1974-06-25 | 1976-01-23 | Commissariat Energie Atomique | SUPPORT STRUCTURE FOR QUICK NEUTRON NUCLEAR REACTOR CORE |
| CN1067132A (en) * | 1991-05-17 | 1992-12-16 | 法玛通公司 | The device of the nuclear reactor that melts behind recovery and the cooling accident |
| CN101231896A (en) * | 2007-12-11 | 2008-07-30 | 中国原子能科学研究院 | Sodium leakage receiving and inhibiting device |
| KR20110024107A (en) * | 2009-09-01 | 2011-03-09 | 한국원자력연구원 | A broad acoustic leak detector in a steam generator of sodium-cooled fast reactor and method using the same |
| CN102945686A (en) * | 2012-11-02 | 2013-02-27 | 中国核电工程有限公司 | Spent fuel pool state continuous monitoring method and system |
| CN108364699A (en) * | 2018-04-13 | 2018-08-03 | 中广核研究院有限公司 | A kind of reactor pressure vessel for coolant metal fast reactor |
Non-Patent Citations (2)
| Title |
|---|
| 朴君等: "基于有限元分析法的钠火事故下钢覆面完整性分析", 《核科学与工程》 * |
| 梁翰哲等: "液态金属冷却反应堆主容器双向密封特性分析", 《核科学与工程》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109616235B (en) | Temporary discharging storage device | |
| KR100702806B1 (en) | Apparatus suitable for transporting and storing nuclear fuel rods and methods for using the apparatus | |
| TWI478175B (en) | Atomic furnace storage containers and atomic energy units | |
| JPH06222177A (en) | Assembly for protection of corium | |
| CN110176316B (en) | U-shaped pipe internal heat exchange type reactor core melt trapping device | |
| CN210167124U (en) | Containment pressure relief and filtration system | |
| JP2008546985A (en) | Heat exchanger assembly for high temperature reactors. | |
| CN112700892B (en) | Multiple defence and refrigerated reactor core catcher | |
| JP4908561B2 (en) | Reactor containment vessel and nuclear power plant using the same | |
| US5229067A (en) | Liquid metal cooled nuclear reactor | |
| US4192053A (en) | Method for retubing a steam generator | |
| CN113314238B (en) | Three-generation nuclear power station reactor plant, arrangement method thereof and nuclear power station | |
| US4382907A (en) | Liquid metal cooled nuclear reactor | |
| CN112635084A (en) | Sodium leakage receiving and inhibiting device for sodium-cooled fast reactor pit | |
| JPS60187887A (en) | High-temperature gas reactor for intermediate rank output | |
| EP3364420B1 (en) | Dry storage facility with waste heat exhaust and ventilation system for spent nuclear fuel | |
| SE443471B (en) | STORAGE TANK AND WAY TO MAKE THIS | |
| WO2022111436A1 (en) | Device for reactor core melt containment in severe accident of nuclear power plant | |
| US3748227A (en) | Containment system for a sodium cooled reactor | |
| JP4287106B2 (en) | Reactor containment equipment | |
| CN220584934U (en) | Passive containment cooling system | |
| CN211502350U (en) | Spent fuel pool and isolation device for preventing pipeline break loss of spent fuel pool | |
| CN116344074B (en) | Top shield structure for reactor | |
| CN216337464U (en) | Sealing equipment for preventing gasification furnace annular gap fault | |
| CN102810337B (en) | Auxiliary water storage type passive double-layered containment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210409 |