CN202352354U - Passive lead-bismuth heat exchanging device capable of realizing natural circulation - Google Patents
Passive lead-bismuth heat exchanging device capable of realizing natural circulation Download PDFInfo
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- CN202352354U CN202352354U CN2011205029188U CN201120502918U CN202352354U CN 202352354 U CN202352354 U CN 202352354U CN 2011205029188 U CN2011205029188 U CN 2011205029188U CN 201120502918 U CN201120502918 U CN 201120502918U CN 202352354 U CN202352354 U CN 202352354U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model belongs to the field of nuclear power heat exchanging equipment, and relates to a passive lead-bismuth heat exchanging device capable of realizing natural circulation and transferring heat through lead-bismuth fluid, in particular to a device comprising a circular ring-shaped natural-circulation and heat-transfer loop and a square ring-shaped natural-circulation and heat-transfer loop and capable of realizing natural circulation and heat transfer at both sides. According to the utility model, an inner circle of an inner ring pipe is a primary-side lead-bismuth alloy fluid passageway, and a secondary-side fluid passageway is arranged between an outer circle of the inner ring pipe and an inner wall of an outer ring pipe; a lead-bismuth alloy heater, a lead-bismuth alloy charging/discharging pump, a lead-bismuth alloy storage tank and the primary-side lead-bismuth alloy fluid passageway form a primary loop, and the secondary-side fluid passageway, a secondary loop cooler and a secondary loop fluid charging/discharging pump form a secondary loop; heat produced by a subcritical reactor of an ADS (Accelerator Driving System) and the lead-bismuth alloy fluid in the inner ring pipe exchange heat with cooling agent in the outer ring pipe; and heat exchanging fluid at the both sides form natural circulation as is driven by density difference. The passive lead-bismuth heat exchanging device capable of realizing natural circulation has the characteristics of high efficiency, energy saving property, safety, reliability and passive property, is easy and easy to implement, and is easy to popularize.
Description
Technical field
The utility model belongs to the nuclear energy field of heat exchange equipment, particularly utilizes the plumbous bismuth heat-exchanger rig of a kind of non-active Natural Circulation of plumbous bismuth fluid heat transferring.Specifically,, take heat out of,, realize the normal power generation of new forms of energy to guarantee the operation of ADS reactor safety by this device at the heat that the ADS subcritical reactor produces.
Background technology
ADS (accelerate driven system, accelerator drive system) is one of the most promising transmuting technology.It is made up of middle ability high current proton precessional magnetometer, outer source neutron generation target and subcritical reactor, is a kind of transmuting of nuclear waste efficiently stove.The ultimate principle of ADS is following: the heavy metal target part of proton beam bombardment in subcritical heap by accelerator produces, cause spallation reaction, and outer cascade produces neutron with nuclear through intranuclear cascade again, and the spallation neutron-producing target is that subcritical heap provides outer source neutron.
In ADS, utilize liquid lead bismuth alloy (PbBi) as the spallation target cooling medium of holding concurrently; Except having good neutronics performance; Also have good anti-radiation performance, heat transfer property and security feature, can improve the life-span of target system and the security of subcritical reactor.Because what ADS reactor core cooling medium adopted is this special material of lead bismuth alloy, therefore, being necessary to design a kind of plumbous bismuth heat-exchanger rig effectively derives heat.
Present stage, domestic ADS was in the starting stage, and research mostly concentrates on the neutronics research in the ADS reactor core, plumbous bismuth heat exchange and install at the early-stage.At present, because the ADS reactor that builds up useless also, work abroad also only conducts a research in experimental loop.1998, the research/development platform of an European Experiment Test Accelerator drive system (XADS) was set up in France, Italy, Spain's decision.In order to satisfy the needs of technical research, the participant has expanded European Union's majority state to.Italy has dropped into very great, the XADS of a 80MW of design.Sweden KTH (KTH) has also born the part of the XADS of European Union plan, has built testing equipment, tests the stable state and the transient thermodynamic hydraulic performance of plumbous bismuth cooled reactor.Heat exchange of taking mainly are simple bushings formula heat exchange in all experiments, and Italy has carried out simple research to U type pipe type heat transfer.But all researchs need the power support, and the manufacturing of plumbous bismuth pump also are a kind of technologies of complicacy all based on the forced circulation heat exchange.Both sides heat exchange stream has omitted plumbous this link of bismuth pump by the plumbous bismuth heat-exchanger rig that the density difference Natural Circulation drives, and does not need power source, and effective transmission of heat is realized on better and safer ground.
Summary of the invention
The purpose of the utility model is mainly to be simple bushings formula heat exchange to heat exchange in the prior art; But all researchs are all based on the forced circulation heat exchange; Need the deficiency of power support and provide a kind of non-active Natural Circulation plumbous bismuth heat-exchanger rig; It is characterized in that said heat-exchanger rig is a kind of device at bilateral realization natural circulation heat transfer, comprise two kinds of natural circulation heat transfer loop structures of annular and side's annular; The fundamental circuit structure of plumbous bismuth heat-exchanger rig is following: constitute a loop by filling the primary side lead bismuth alloy fluid passage 10 of letting out pump 7, lead bismuth alloy storage pool 6 and lead bismuth alloy heat-exchanger rig 3 down on lead bismuth alloy well heater 1, the lead bismuth alloy; Argon gas storage pool 8 is connected on the public passage of primary side lead bismuth alloy fluid passage 10 and lead bismuth alloy well heater 1, lets out pump 7 under filling on lead bismuth alloy storage pool 6 and primary side lead bismuth alloy fluid passage 10 and the lead bismuth alloy and is connected; Let out pump 5 under filling on secondary side fluid passage 9, secondary circuit refrigeratory 2 and the secondary circuit fluid by lead bismuth alloy heat-exchanger rig 3 and constitute secondary circuit, let out pump 5 under filling on secondary circuit cooling medium storage pool 4 and secondary side fluid passage 9 and the secondary circuit fluid and be connected.
Said lead bismuth alloy heat-exchanger rig is that the structure in annular natural circulation heat transfer loop is to support the identical interior endless tube 11 of interconnective 4 structures in the outer endless tube 12 of heat-exchanger rig; Interior endless tube 11 inner rings are primary side lead bismuth alloy fluid passage 10, are secondary side fluid passage 9 between interior endless tube 11 outer rings and outer endless tube 12 inwalls; Lead bismuth alloy heat-exchanger rig two ends are respectively lower collecting box 13 and upper header 14.
Said lead bismuth alloy heat-exchanger rig is in the outer endless tube 12 of side's annular, to support the interior endless tube 11 of side's annular for the structure in annular natural circulation heat transfer loop, side; Interior endless tube 11 inner rings are primary side lead bismuth alloy fluid passage 10, are secondary side fluid passage 9 between interior endless tube outer ring and outer endless tube 12 inwalls; Lead bismuth alloy heat-exchanger rig two ends are respectively lower collecting box 13 and upper header 14.
The outstanding advantage of the utility model is that this device is simple, saves complicated plumbous bismuth pump, need not power source, has energy-saving safety and high reliability features.Meet current energy-saving and emission-reduction policy, carry out marketing easily.ADS can select one of advanced technology for new forms of energy, and the plumbous bismuth heat-exchanger rig of non-active Natural Circulation also must have the important application prospect.
Description of drawings
Fig. 1 is that the plumbous bismuth heat-exchanger rig of Natural Circulation is arranged the loop synoptic diagram.
Fig. 2 is the plumbous bismuth heat-exchanger rig of the non-active Natural Circulation of an a kind of annular vertical view.
Fig. 3 is that the plumbous bismuth heat-exchanger rig of the non-active Natural Circulation of a kind of side's annular shows vertical view.
Fig. 4 is the cross sectional side view of annular and the annular lead bismuth alloy heat-exchanger rig in side, and wherein a is the A-A sectional view of Fig. 2; B is the B-B sectional view of Fig. 2; C is the C-C sectional view of Fig. 3.
Embodiment
The utility model provides a kind of non-active Natural Circulation plumbous bismuth heat-exchanger rig.Explain below in conjunction with accompanying drawing.
Fig. 1 is that the plumbous bismuth heat-exchanger rig of Natural Circulation is arranged the loop synoptic diagram.Among the figure; Constitute a loop by filling the primary side lead bismuth alloy fluid passage 10 of letting out pump 7, lead bismuth alloy storage pool 6 and lead bismuth alloy heat-exchanger rig 3 down on lead bismuth alloy well heater 1, the lead bismuth alloy; Argon gas storage pool 8 is connected on the public passage of primary side lead bismuth alloy fluid passage 10 and lead bismuth alloy well heater 1, lets out pump 7 under filling on lead bismuth alloy storage pool 6 and primary side lead bismuth alloy fluid passage 10 and the lead bismuth alloy and is connected; Let out pump 5 under filling on secondary side fluid passage 9, secondary circuit refrigeratory 2 and the secondary circuit fluid by lead bismuth alloy heat-exchanger rig 3 and constitute secondary circuit, let out pump 5 under filling on secondary circuit cooling medium storage pool 4 and secondary side fluid passage 9 and the secondary circuit fluid and be connected.
This device principle of work is to produce heat from the ADS reactor core, through lower collecting box 13, is flowed into the primary side lead bismuth alloy fluid passage 10 of the plumbous bismuth heat-exchanger rig 3 of non-active Natural Circulation by the thermal liquid lead bismuth alloy; Heat is passed to endless tube 11 in the heat exchange pipeline, owing to be heated at the ADS reactor core, 10 temperature ins are 400 ℃ in interior endless tube primary side lead bismuth alloy fluid passage for it; Outlet temperature is 300 ℃; Interior endless tube 11 carries out exchange heat with secondary side fluid passage 9 interior secondary circuit cooling mediums (temperature in like the low pressure boiled water is 20 ℃, and outlet temperature is 100 ℃), and the liquid lead bismuth alloy that is cooled off flows out to upper header 14; Liquid lead bismuth alloy with lower temperature flows into lead bismuth alloy well heater 1; Continue to absorb the reactor core heat, realize the derivation of heat thus, accomplish a circulation.Wherein, the primary side lead bismuth alloy will be realized Natural Circulation, needs to add argon gas and draws and lifts, to promote its natural-circulation capacity.Though the fusing point of plumbous bismuth eutectic alloy LBE is higher slightly than sodium, its chemical activity is more weak, has heat transfer property and security feature.The cooling medium of secondary side should be able to be cooled to required level with a loop lead bismuth alloy.Continuous working under 340 ℃ of high temperature, thermolytic rate is low, with LBE chemical reaction does not take place, and spontaneous ignition temperature is considerably beyond running temperature.Therefore cooling medium is chosen as boiled water, glycerine and hydrogenated terphenyl; Take counter-flow heat exchange, promptly lead bismuth alloy is mobile takes reversed flow with secondary side working medium, shown in Fig. 4 (a, b, c).
During startup or when maintenance; Let out pump 7 under filling on the lead bismuth alloy lead bismuth alloy in the lead bismuth alloy storage pool 6 is pumped into or pump the loop; The lead bismuth alloy lead bismuth alloy well heater 1 of flowing through arrives lead bismuth alloy heat-exchanger rig 3, is full of to fill on the lead bismuth alloy behind the whole loop to let out pump 7 stoppages in transit down.Fill on the secondary circuit fluid and down let out pump 5 the secondary circuit cooling medium in the secondary circuit cooling medium storage pool 4 is pumped into lead bismuth alloy heat-exchanger rig 3, the heat interchanger 2 that gets into self loop is then let out pump 5 stoppages in transit filling on the secondary circuit fluid under after being full of whole loop.
Fig. 2 is the plumbous bismuth heat-exchanger rig of the non-active Natural Circulation of an a kind of annular vertical view.Among the figure, support the identical interior endless tube 11 of interconnective 4 structures in the outer endless tube 12 of heat-exchanger rig; Interior endless tube 11 inner rings are primary side lead bismuth alloy fluid passage 10, are secondary side fluid passage 9 between interior endless tube 11 outer rings and outer endless tube 12 inwalls; Lead bismuth alloy heat-exchanger rig two ends are respectively lower collecting box 13 and upper header 14.
Fig. 3 is the plumbous bismuth heat-exchanger rig of the non-active Natural Circulation of an a kind of side's annular vertical view.In the outer endless tube 12 of side's annular, support the interior endless tube 11 of side's annular, interior endless tube 11 inner rings are primary side lead bismuth alloy fluid passage 10, are secondary side fluid passage 9 between interior endless tube outer ring and outer endless tube 12 inwalls; Lead bismuth alloy heat-exchanger rig two ends are respectively lower collecting box 13 and upper header 14.Above-mentioned annular is identical with the Natural Circulation type of flow that side's plumbous bismuth heat-exchanger rig of two kinds of Natural Circulation of annular is taked, and structural design has certain difference.The square loop configuration of Fig. 3 representative because rectangle causes the effect of backflow, impels heat exchange to increase, the heat of more evenly taking away reactor core better and being produced.No matter be the annular of Fig. 2, or the square loop configuration of Fig. 3, basic fluid interchange mode is: get into the primary side lead bismuth alloy fluid passage 10 that flows into the plumbous bismuth heat-exchanger rig 3 of non-active Natural Circulation, endless tube 11 in the liquid lead bismuth alloy is passed to heat; And then pass to the flow working medium (like the low pressure boiled water) that gets into secondary side pipeline 9, flow working medium leans on Natural Circulation to flow out secondary side pipeline 9 owing to be heated the generation density difference.Outer endless tube 12 outside flow working medium also will be to the environment distribute heat.Thus, realize the transport process of heat.
The interior endless tube axis of small circle of unit endless tube is 5mm-20mm in the lead bismuth alloy heat-exchanger rig, and outer endless tube diameter is 30mm-100mm, the about 1m-3m of length.Said lead bismuth alloy heat-exchanger rig is made up of materials such as aluminium alloy, austenitic steel or potteries.
Claims (5)
1. the plumbous bismuth heat-exchanger rig of non-active Natural Circulation is characterized in that, said heat-exchanger rig is a kind of device at bilateral realization natural circulation heat transfer, comprises two kinds of natural circulation heat transfer loop structures of annular and side's annular; The fundamental circuit structure of plumbous bismuth heat-exchanger rig is following: constitute a loop by filling the primary side lead bismuth alloy fluid passage (10) of letting out pump (7), lead bismuth alloy storage pool (6) and lead bismuth alloy heat-exchanger rig (3) down on lead bismuth alloy well heater (1), the lead bismuth alloy; Argon gas storage pool (8) is connected on the public passage of primary side lead bismuth alloy fluid passage (10) and lead bismuth alloy well heater (1), lets out pump (7) under filling on lead bismuth alloy storage pool (6) and primary side lead bismuth alloy fluid passage (10) and the lead bismuth alloy and is connected; Let out pump (5) under filling on secondary side fluid passage (9), secondary circuit refrigeratory (2) and the secondary circuit fluid by lead bismuth alloy heat-exchanger rig (3) and constitute secondary circuit, let out pump (5) under filling on secondary circuit cooling medium storage pool (4) and secondary side fluid passage (9) and the secondary circuit fluid and be connected.
2. according to the plumbous bismuth heat-exchanger rig of the said non-active Natural Circulation of claim 1; It is characterized in that said lead bismuth alloy heat-exchanger rig is that the structure in annular natural circulation heat transfer loop is to support the identical interior endless tube (11) of interconnective 4 structures in the outer endless tube (12) of heat-exchanger rig; Interior endless tube (11) inner ring is primary side lead bismuth alloy fluid passage (10), is secondary side fluid passage (9 between interior endless tube (11) outer ring and outer endless tube (12) inwall; Lead bismuth alloy heat-exchanger rig two ends are respectively lower collecting box (13) and upper header (14).
3. according to the plumbous bismuth heat-exchanger rig of the said non-active Natural Circulation of claim 1; It is characterized in that; Said lead bismuth alloy heat-exchanger rig is in the outer endless tube (12) of side's annular, to support the interior endless tube (11) of side's annular for the structure in annular natural circulation heat transfer loop, side; Interior endless tube (11) inner ring is primary side lead bismuth alloy fluid passage (10), is secondary side fluid passage (9 between interior endless tube outer ring and outer endless tube (12) inwall; Lead bismuth alloy heat-exchanger rig two ends are respectively lower collecting box (13) and upper header (14).
4. according to the plumbous bismuth heat-exchanger rig of the said non-active Natural Circulation of claim 1, it is characterized in that said lead bismuth alloy heat-exchanger rig is made up of materials such as aluminium alloy, austenitic steel or potteries.
5. according to the plumbous bismuth heat-exchanger rig of the said non-active Natural Circulation of claim 1, it is characterized in that the interior diameter of endless tube is 5mm-20mm in the lead bismuth alloy heat-exchanger rig, outer endless tube interior diameter is 30mm-100mm, and wall thickness is 3-6mm, length is 1m-3m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205029188U CN202352354U (en) | 2011-12-06 | 2011-12-06 | Passive lead-bismuth heat exchanging device capable of realizing natural circulation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205029188U CN202352354U (en) | 2011-12-06 | 2011-12-06 | Passive lead-bismuth heat exchanging device capable of realizing natural circulation |
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| CN202352354U true CN202352354U (en) | 2012-07-25 |
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| CN2011205029188U Expired - Fee Related CN202352354U (en) | 2011-12-06 | 2011-12-06 | Passive lead-bismuth heat exchanging device capable of realizing natural circulation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102446564A (en) * | 2011-12-06 | 2012-05-09 | 华北电力大学 | Passive natural-circulation lead bismuth heat exchange device and method for discharging heat out of reactor core |
| CN103413579A (en) * | 2013-07-08 | 2013-11-27 | 华北电力大学 | Natural circulation loop system of lead-bismuth alloy |
| CN106837769A (en) * | 2017-01-17 | 2017-06-13 | 西安交通大学 | A kind of lead bismuth alloy airlift pump circulation ability experimental system and its experimental technique |
-
2011
- 2011-12-06 CN CN2011205029188U patent/CN202352354U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102446564A (en) * | 2011-12-06 | 2012-05-09 | 华北电力大学 | Passive natural-circulation lead bismuth heat exchange device and method for discharging heat out of reactor core |
| CN103413579A (en) * | 2013-07-08 | 2013-11-27 | 华北电力大学 | Natural circulation loop system of lead-bismuth alloy |
| CN103413579B (en) * | 2013-07-08 | 2016-04-06 | 华北电力大学 | A kind of natural circulation loop system of lead-bismuth alloy |
| CN106837769A (en) * | 2017-01-17 | 2017-06-13 | 西安交通大学 | A kind of lead bismuth alloy airlift pump circulation ability experimental system and its experimental technique |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20141206 |
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| EXPY | Termination of patent right or utility model |