CN109817355A - A kind of cylindrical body sodium-sodium-gas integrated heat exchanger - Google Patents
A kind of cylindrical body sodium-sodium-gas integrated heat exchanger Download PDFInfo
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- CN109817355A CN109817355A CN201811632406.6A CN201811632406A CN109817355A CN 109817355 A CN109817355 A CN 109817355A CN 201811632406 A CN201811632406 A CN 201811632406A CN 109817355 A CN109817355 A CN 109817355A
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- sodium
- tube sheet
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- heat
- transfer pipe
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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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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention relates to reactor accident waste heats to export technical field, specifically discloses a kind of cylindrical body sodium-sodium-gas integrated heat exchanger.Cylinder upper and lower end face in the heat exchanger is respectively equipped with two layers of tube sheet, and the sodium-air heat-transfer pipe of several vertical distributions is provided between two layers of tube sheet, make to form closed secondary side space between two layers of tube sheet, sodium-air heat-transfer pipe lateral wall and cylinder madial wall;It is vertically installed with several sodium-sodium heat-transfer pipe in the secondary side space, and is provided in cylinder upper end side wall and is once connected into sodium mouth with sodium-sodium heat-transfer pipe upper end, is provided with primary sodium mouth out in cylinder bottom side of the wall and is connected with sodium-sodium heat-transfer pipe lower end;Secondary side sodium is formed full of sodium in the secondary side space outside the sodium-sodium heat-transfer pipe.The heat exchanger is reduced to a sodium-sodium-air heat exchanger, simultaneously because leaving the heap container of high neutron irradiation, is significantly reduced to equipment radiation resistance, manufacture and installation requirement, and heat transfer efficiency improves.
Description
Technical field
The invention belongs to reactor accident waste heats to export technical field, and in particular to a kind of cylindrical body sodium-one body heat of sodium-gas
Exchanger.
Background technique
It is required according to nuclear safety codes, all steam generator water supply interruptions, reactor are occurring for sodium-cooled fast reactor nuclear power station
When losing breakdown caused by factory's dispatch from foreign news agency, earthquake, in the case where heat cannot being discharged by main heat-transfer system, accident afterheat
Investment is used to conduct the residual heating of reactor and accumulation of heat to ultimate heat sink (atmosphere) by discharge system, guarantees fuel rod, heap
Inner member and reactor vessel are within the scope of acceptable temperature limit.
Accident afterheat discharge system usually by sodium-sodium heat converter, sodium-air heat exchanger, sodium surge tank and connects it
Pipeline composition.
Sodium-sodium heat converter, for by the heat transfer of accident afterheat discharge system primary Ioops sodium to intermediate loop.Sodium-
Intermediate loop heat is passed to air by air heat exchanger.Heat from reactor core is by two heat exchangers, sodium follows twice
Ring completes transmitting.
In traditional accident afterheat discharge system of circulation twice, the main purpose that intermediate loop is arranged is to realize reactor core heat
Primary Ioops radiosodium and the possible catalytic combustion of air are avoided while amount transmitting, also guarantees that primary Ioops radioactivity does not enter greatly
In compression ring border.
This heat transport schemes come with some shortcomings, and are mainly manifested in following two aspect:
(1) two heat exchangers are needed, cost of equipment is high.
(2) sodium-sodium heat converter is typically mounted in heap container, and installation difficulty is big, and is in high neutron irradiation ring throughout the year
Border.It is high to equipment performance, manufacture and installation requirement.
(3) two sodium Natural Circulation processes are needed, long flow path, flow resistance is big, and heat transfer efficiency is low.
Summary of the invention
The purpose of the present invention is to provide a kind of cylindrical body sodium-sodium-gas integrated heat exchangers, can be directed to existing accident afterheat
The deficiency of discharge system will need the heat transfer that circulating transfer could be completed twice using the strong feature of metallic sodium heating conduction
While to ultimate heat sink, primary Ioops radiosodium and the possible catalytic combustion problem of air still can avoid.
Technical scheme is as follows: a kind of cylindrical body sodium-sodium-gas integrated heat exchanger, which includes cylinder
Body, sodium-air heat-transfer pipe and sodium-sodium heat-transfer pipe, wherein cylinder is cylindrical tube structure, is set respectively in cylinder upper and lower end face
There is two layers of tube sheet, and be provided with the sodium-air heat-transfer pipe of several vertical distributions between two layers of tube sheet, makes two layers of tube sheet, sodium-
Closed secondary side space is formed between air heat-transfer pipe lateral wall and cylinder madial wall;It hangs down in the secondary side space
It is directly provided with several sodium-sodium heat-transfer pipe, and is provided in cylinder upper end side wall and is once connected into sodium mouth with sodium-sodium heat-transfer pipe upper end
It connects, is provided with primary sodium mouth out in cylinder bottom side of the wall and is connected with sodium-sodium heat-transfer pipe lower end;Outside the sodium-sodium heat-transfer pipe
Secondary side space in full of sodium formed secondary side sodium.
The cylinder upper and lower end face is respectively first layer tube sheet and layer 6 tube sheet, and sodium-air heat-transfer pipe is two upper and lower
It is welded respectively with first layer tube sheet and layer 6 tube sheet tube expansion end face;Air can enter sodium-air heat transfer from layer 6 tube sheet
Pipe, and the heat for the secondary side sodium that sodium-air heat transfer pipe outer wall is full of is taken away.
It is provided with below the first layer tube sheet and the fixed third layer tube sheet of cylinder madial wall;The layer 6 pipe
The four layer tube sheet fixed with cylinder madial wall is equipped with above plate;It is equipped between the third layer tube sheet and the 4th layer of tube sheet
Several are arranged vertically sodium-sodium heat-transfer pipe.
Be provided with second layer tube sheet between the first layer tube sheet and third layer tube sheet, in the 4th layer of tube sheet and
Layer 5 tube sheet is provided between layer 6 tube sheet;Sky is formed by the second layer tube sheet, third layer tube sheet and cylinder
Between formed once into sodium room;Being formed by space in the 4th layer of tube sheet, layer 5 tube sheet and the cylinder and sodium-sodium casing is
Once go out sodium room.
Sodium-sodium casing is equipped between the second layer tube sheet and third layer tube sheet, in the 4th layer of tube sheet and the
It is equipped with sodium-sodium casing between five layers of tube sheet, a sodium and air is isolated, avoids direct contact with.
The sodium-sodium heat-transfer pipe is alternately arranged in cylinder with the sodium-air heat-transfer pipe.
The space that the sodium-air heat-transfer pipe, sodium-sodium heat-transfer pipe, sodium-sodium casing and cylinder are surrounded full of sodium,
Form secondary survey sodium.
Cylindrical body sodium-sodium-gas the integrated heat exchanger is mounted on reactor attachment, and will be with sodium-one body heat of sodium-gas
The outlet of reactor core in the hot sodium pipe access reactor that exchanger is once connected into sodium mouth;It will be with sodium-sodium-gas one heat exchange
Device once enters the entrance of reactor core in the cold sodium pipe access reactor that sodium mouth is connected.
Sodium-the sodium-gas integrated heat exchanger installation height meets a sodium highest point and is less than primary tank pressure institute
Corresponding siphon height.
Sodium-sodium-gas integrated heat exchanger top and the bottom are respectively connected to air hose.
Remarkable result of the invention is: a kind of cylindrical drum sodium-sodium-gas integrated heat exchanger of the present invention, setting
Outside heap container, the basic neutron irradiation that excludes influences, and accident afterheat discharge system only passes through two root canal roads and heap container phase
Even, installation is simple, influences on heap container small.Accident afterheat discharge system is reduced to a sodium-sodium-sky from two heat exchangers
Gas-heat exchanger, simultaneously because the heap container of high neutron irradiation is left, it is also bright to equipment radiation resistance, manufacture and installation requirement
It is aobvious to reduce.Cost of equipment will reduce about half.Sodium-sodium-air heat exchanger is integrated design, and heat transfer efficiency improves.Naturally it follows
Ring is reduced to a sodium circulation process from two sodium circulation process, and equipment is few, and flow path resistance reduces.
Detailed description of the invention
Fig. 1 is a kind of cylindrical drum sodium-sodium-gas integrated heat exchanger structural schematic diagram of the present invention;
Fig. 2 is B direction view in Fig. 1;
Fig. 3 is A-A cross-sectional view in Fig. 1;
Fig. 4 is a kind of cylindrical drum sodium-sodium-gas integrated heat exchanger structure use state signal of the present invention
In figure: 1, first layer tube sheet;2, second layer tube sheet;3, third layer tube sheet;4, the 4th layer of tube sheet;5, layer 5 pipe
Plate;6, layer 6 tube sheet;7, sodium-air heat-transfer pipe;8, secondary sodium space;9, sodium-sodium heat-transfer pipe;10, sodium-sodium casing;11,
Cylinder;12, a sodium protects cylinder;13, sodium-sodium-gas integrated heat exchanger;14, cold sodium pipe;15, hot sodium pipe;16, reactor core;
17, screen connects case.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in Figures 1 to 3, a kind of cylindrical drum sodium-sodium-gas integrated heat exchanger, including cylinder 11, sodium-air heat-transfer pipe
7, sodium-sodium heat-transfer pipe 9, wherein cylinder 11 is cylindrical tube structure, and first layer tube sheet 1 is respectively set in 11 upper and lower ends of cylinder
With the two layers totally tube sheet of layer 6 tube sheet 6, several vertical distributions are provided between first layer tube sheet 1 and layer 6 tube sheet 6
Sodium-air heat-transfer pipe 7 allows air to enter sodium-air heat-transfer pipe 7 from layer 6 tube sheet 6, and will be outside sodium-air heat-transfer pipe 7
The heat for the secondary side sodium that wall is full of is taken away;It is respectively arranged in the lower section of first layer tube sheet 1 and the top of layer 6 tube sheet 6
Third layer tube sheet 3 and the 4th layer of tube sheet 4 have several to be arranged vertically in third layer tube sheet 3 and the 4th layer of 4 vertical distribution of tube sheet
Sodium-sodium heat-transfer pipe 9, and sodium-sodium heat-transfer pipe 9 is alternately arranged with sodium-air heat-transfer pipe 7;In first layer tube sheet 1 and third layer pipe
It is provided with second layer tube sheet 2 between plate 3, is provided with layer 5 tube sheet 5 between tube sheet 4 and layer 6 tube sheet 6 at the 4th layer, and
Sodium-sodium casing 10 is installed, at the 4th layer between tube sheet 4 and layer 5 tube sheet 5 between second layer tube sheet 2 and third layer tube sheet 3
Sodium-sodium casing 10 is installed, a sodium and air is isolated, is avoided direct contact with;Second layer tube sheet 2, third layer tube sheet 3 with
Cylinder 11 is formed by space and is formed once into sodium room, and is formed once with the open communication of 11 side wall of cylinder into sodium mouth;?
It is primary sodium room out that four floor tube sheet 4, layer 5 tube sheet 5 and cylinder 11 and sodium-sodium casing 10, which are formed by space, and in cylinder 11
Sidewall opening be connected to be formed once go out sodium mouth;Sodium-air heat-transfer pipe 7, sodium-sodium heat-transfer pipe 9, sodium-sodium casing 10 and cylinder
11 spaces surrounded are full of sodium, form secondary survey sodium;
As shown in figure 4, a kind of sodium-sodium-gas integrated heat exchanger accident afterheat discharge system, sodium-one body heat of sodium-gas is handed over
Parallel operation 13 is mounted near reactor by foundation bolt, and the height of installation i.e. sodium highest point should be less than primary tank pressure institute
Corresponding siphon height;Cold sodium pipe 14 and hot sodium pipe 15 in sodium-sodium-gas integrated heat exchanger 13 is via entrance above heap container
Heap container, and cold sodium pipe 14 is made to be connected with the entrance that screen connects reactor core 16 on case, it is that hot sodium pipe 15 is connected with core exit;
Air hose accesses heat exchanger from top and the bottom respectively.
Claims (10)
1. a kind of cylindrical body sodium-sodium-gas integrated heat exchanger, it is characterised in that: the heat exchanger includes cylinder (11), sodium-sky
Gas heat-transfer pipe (7) and sodium-sodium heat-transfer pipe (9), wherein cylinder (11) is cylindrical tube structure, in cylinder (11) upper and lower end face
It is respectively equipped with two layers of tube sheet, and is provided with the sodium-air heat-transfer pipe (7) of several vertical distributions between two layers of tube sheet, makes two
Closed secondary side space is formed between layer tube sheet, sodium-air heat-transfer pipe (7) lateral wall and cylinder (11) inner sidewall;Institute
Be vertically installed with several sodium-sodium heat-transfer pipe (9) in the secondary side space stated, and cylinder (11) upper end side wall be provided with once into
Sodium mouth is connected with sodium-sodium heat-transfer pipe (9) upper end, is provided in cylinder (11) bottom side of the wall and once goes out sodium mouth and sodium-sodium heat-transfer pipe
(9) lower end is connected;Secondary side sodium is formed full of sodium in the sodium-secondary side space of sodium heat-transfer pipe (9) outside.
2. a kind of cylindrical body sodium-sodium-gas integrated heat exchanger according to claim 1, it is characterised in that: the cylinder
(11) upper and lower end face is respectively first layer tube sheet (1) and layer 6 tube sheet (6), and sodium-air heat-transfer pipe (7) up and down divide by two end faces
It is not welded with first layer tube sheet (1) and layer 6 tube sheet (6) tube expansion;Air can be passed from layer 6 tube sheet (6) into sodium-air
Heat pipe (7), and the heat for the secondary side sodium that sodium-air heat-transfer pipe (7) outer wall is full of is taken away.
3. a kind of cylindrical body sodium-sodium-gas integrated heat exchanger according to claim 2, it is characterised in that: described first
It is provided with below layer tube sheet (1) fixed third layer tube sheet (3) with cylinder (11) inner sidewall;On the layer 6 tube sheet (6)
Side is equipped with the four layer tube sheet (4) fixed with cylinder (11) inner sidewall;In the third layer tube sheet (3) and the 4th layer of tube sheet
(4) it is equipped with several between and is arranged vertically sodium-sodium heat-transfer pipe (9).
4. a kind of cylindrical body sodium-sodium-gas integrated heat exchanger according to claim 3, it is characterised in that: described first
Second layer tube sheet (2) are provided between layer tube sheet (1) and third layer tube sheet (3), in the 4th layer of tube sheet (4) and layer 6
Layer 5 tube sheet (5) are provided between tube sheet (6);In the second layer tube sheet (2), third layer tube sheet (3) and cylinder (11)
Space is formed by be formed once into sodium room;In the 4th layer of tube sheet (4), layer 5 tube sheet (5) and cylinder (11) and sodium-
It is once to go out sodium room that sodium casing (10), which is formed by space,.
5. a kind of cylindrical body sodium-sodium-gas integrated heat exchanger according to claim 3 or 4, it is characterised in that: described
Sodium-sodium casing (10) is equipped between second layer tube sheet (2) and third layer tube sheet (3), in the 4th layer of tube sheet (4) and the 5th
It is equipped with sodium-sodium casing (10) between layer tube sheet (5), a sodium and air is isolated, avoids direct contact with.
6. a kind of cylindrical body sodium-sodium-gas integrated heat exchanger according to claim 1, it is characterised in that: the sodium-
Sodium heat-transfer pipe (9) is alternately arranged in cylinder (11) with the sodium-air heat-transfer pipe (7).
7. a kind of cylindrical body sodium-sodium-gas integrated heat exchanger according to claim 5, it is characterised in that: the sodium-
The space that air heat-transfer pipe (7), sodium-sodium heat-transfer pipe (9), sodium-sodium casing (10) and cylinder (11) are surrounded is full of sodium, is formed
Secondary survey sodium.
8. a kind of sodium-sodium-gas integrated heat-exchanger accident afterheat discharge system, it is characterised in that: by cylinder described in claim 1
Body sodium-sodium-gas integrated heat exchanger (13) is mounted near reactor, and will be primary with sodium-sodium-gas integrated heat exchanger (13)
The outlet of reactor core (16) in hot sodium pipe (15) the access reactor being connected into sodium mouth;It will be with sodium-sodium-gas integrated heat exchanger
(13) once enter the entrance of reactor core (16) in cold sodium pipe (14) the access reactor that sodium mouth is connected.
9. a kind of sodium-sodium according to claim 8-gas integrated heat-exchanger accident afterheat discharge system, it is characterised in that: institute
Sodium-the sodium stated-gas integrated heat exchanger (13) installation height meets a sodium highest point and is less than corresponding to primary tank pressure
Siphon height.
10. a kind of sodium-sodium according to claim 8-gas integrated heat-exchanger accident afterheat discharge system, it is characterised in that:
Sodium-the sodium-gas integrated heat exchanger (13) top and the bottom are respectively connected to air hose.
Priority Applications (1)
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CN201811632406.6A CN109817355B (en) | 2018-12-29 | 2018-12-29 | Cylinder sodium-gas integrated heat exchanger |
Applications Claiming Priority (1)
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CN201811632406.6A CN109817355B (en) | 2018-12-29 | 2018-12-29 | Cylinder sodium-gas integrated heat exchanger |
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CN109817355A true CN109817355A (en) | 2019-05-28 |
CN109817355B CN109817355B (en) | 2020-12-11 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110428913A (en) * | 2019-07-18 | 2019-11-08 | 中广核工程有限公司 | A kind of nuclear power plant's supplement heat rejecter water system and design method |
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