CN204926810U - Device to zincification among plumbous bismuth eutectic alloy of ADS reactor - Google Patents
Device to zincification among plumbous bismuth eutectic alloy of ADS reactor Download PDFInfo
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- CN204926810U CN204926810U CN201520309132.2U CN201520309132U CN204926810U CN 204926810 U CN204926810 U CN 204926810U CN 201520309132 U CN201520309132 U CN 201520309132U CN 204926810 U CN204926810 U CN 204926810U
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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 discloses a device to zincification among plumbous bismuth eutectic alloy of ADS reactor, the device be including having a ADS reactor with the zinc pipe be provided with in the ADS reactor and pass the zincification hole add zinc pipe 1, add zinc pipe 1 and extend to near reactor reactor core it can closed closing cap to be provided with on the zincification hole the closing cap outside is provided with splendid attire portion and injection portion to in adding zinc powder or weak acid zinc salt or contain the additive of zinc element in to the reactor core through the zincification hole, thereby make and contain the zinc element in the cooling agent in the reactor core, through the addition of control zinc element, form the compact oxide thin films of one deck in that the reactor core is inside, thereby improved the life and the security of reactor.
Description
Technical field
The utility model relates to nuclear reactor safety field, by zincification in ADS reactor to improve the performance of reactor, be specifically related to a kind of device to zincification in the plumbous bismuth eutectic alloy of ADS reactor.
Background technology
From the eighties of last century later stage eighties, ADS, as the transmuting heap-type of a kind of advanced person, becomes the focus of international research gradually, and the U.S., European Union, Japan and other countries all list the research of ADS sub-critical reactor in national strategic plan.Its composition comprises: external source neutron-producing target, middle energy high current proton precessional magnetometer and subcritical reactor, be a kind of nuclear waste transmuting stove and incinerator efficiently, LBE (plumbous bismuth eutectic alloy) is first-selected coolant material and spallation target in current ADS (subcritical system of Accelerator driven) design.Described LBE refers to the plumbous bismuth eutectic alloy that mass percent that is plumbous and bismuth is respectively 44% ~ 45% and 55% ~ 56%.
In pressurized-water reactor nuclear power plant, primary Ioops stress-corrosion cracking (PWSSCC) is the most serious to the local corrosion of presurized water reactor structured material, directly relevant to the service life of equipment, reactor will be forced when stress corrosion is serious out of service, in addition, the deposition of corrosion product on equipment is the main source of shutdown radiation dose.Under certain condition, these potential safety hazards can be alleviated at primary Ioops zincification.In early days, first zincification technology is applied to boiling-water reactor, and it adds concentration is 5 μ g/L-15 μ g/L, and in the later stage eighties, zincification technology is applied in presurized water reactor gradually.Zincification technology can reduce radiation dose rate, reduce PWSCC, improve corrosion product deposits the axial power skew abnormal (AOA) caused.
Identical with boiling-water reactor with presurized water reactor, in the ADS reactor operation adopting LBE cooling, LBE can form stronger corrosion abrasive action equally to structured material.The solution of current proposition has a lot, but can be summed up as the skim forming densification on the surface of structured material generally.According to film formation process and opportunity difference can be divided into immersion, surface high-temp, ion implantation, operation again before, run medium.But owing to being subject to the restriction of hydrogen richness and oxygen content in cooling medium, do not formed the scheme appearance of dense oxidation film by zincification in ADS reactor.
For above-mentioned reasons, the present inventor conducts in-depth research existing ADS nuclear reactor art, to design and develop out the device and method of zincification in the plumbous bismuth eutectic alloy of ADS reactor.
Utility model content
In order to overcome the problems referred to above, present inventor has performed and study with keen determination, design a kind of device to zincification in the plumbous bismuth eutectic alloy of ADS reactor, this device is included in the ADS reactor that top offers zincification hole, wherein, what in described ADS reactor, be provided through described zincification hole adds zinc pipe, describedly add the round tube that zinc pipe is diameter 3mm-5mm, described zincification hole is provided with closeable capping, containing portion and injection portion is had in described capping outer setting, so that add zinc powder or weak acid zinc salt or the adjuvant containing Zn-ef ficiency by adding zinc pipe in reactor core, thus make in the cooling medium of heap in-core containing Zn-ef ficiency, by controlling the addition of Zn-ef ficiency, the sull of one deck densification is formed at heap core inner, and, the described openend adding zinc pipe inside upward, make from its inner Zn-ef ficiency sprayed along with lead bismuth alloy upwards flows, improve the formation efficiency of sull, thus complete the utility model.
Specifically, the purpose of this utility model is to provide following aspect:
(1) a kind of device to zincification in the plumbous bismuth eutectic alloy of ADS reactor, it is characterized in that, this device is included in the ADS reactor that top offers zincification hole, what in described ADS reactor, be provided through described zincification hole adds zinc pipe 1, the described zinc pipe 1 that adds extends near reactor core, described in add zinc pipe 1 for adding zinc powder or weak acid zinc salt or the adjuvant containing Zn-ef ficiency in ADS reactor.
(2) device to zincification in the plumbous bismuth eutectic alloy of ADS reactor according to above-mentioned (1), it is characterized in that, described zincification tube section is rounded, and the internal diameter adding zinc pipe is 3mm-5mm.
(3) device to zincification in the plumbous bismuth eutectic alloy of ADS reactor according to above-mentioned (1), it is characterized in that, the described zinc pipe that adds has predetermined radian in the one end near reactor core, and described radian makes to add the top of zinc pipe at the distal opening direction orientating reaction heap of ADS reactor inside.
(4) device to zincification in the plumbous bismuth eutectic alloy of ADS reactor according to above-mentioned (1), is characterized in that, described zincification hole is provided with closeable capping, have containing portion and injection portion in described capping outer setting.
(5) device to zincification in the plumbous bismuth eutectic alloy of ADS reactor according to above-mentioned (4), is characterized in that, time not moisture in the cooling medium of ADS reactor, add the adjuvant containing Zn-ef ficiency by described zincification hole in reactor core;
Time moisture in the cooling medium of ADS reactor, in reactor core, add zinc powder or weak acid zinc salt or the adjuvant containing Zn-ef ficiency by described zincification hole.
(6) device to zincification in the plumbous bismuth eutectic alloy of ADS reactor according to above-mentioned (5), it is characterized in that, the particle diameter of described zinc powder or weak acid zinc salt is 0.5um ~ 10um, and in described weak acid zinc salt, the percent by weight of Zn-ef ficiency is 35% ~ 42%.
(7) device to zincification in the plumbous bismuth eutectic alloy of ADS reactor according to above-mentioned (5) or (6), it is characterized in that, the described adjuvant containing Zn-ef ficiency comprises water and weak acid zinc salt, and described weak acid zinc salt comprises zinc formate or zinc acetate.
(8) device to zincification in the plumbous bismuth eutectic alloy of ADS reactor according to above-mentioned (7), it is characterized in that, based on the general assembly (TW) of the described adjuvant containing Zn-ef ficiency, the weight fraction of Zn-ef ficiency is 0.005-0.007wt%.
(9) device to zincification in the plumbous bismuth eutectic alloy of ADS reactor according to above-mentioned (1), it is characterized in that, the monitoring device of Zn-ef ficiency concentration in its internal coolant of Real-Time Monitoring is provided with at described heap in-core, when described monitoring device monitors the general assembly (TW) based on cooling medium, the weight fraction of Zn-ef ficiency is lower than during for 0.0015wt%, zinc powder or weak acid zinc salt or the adjuvant containing Zn-ef ficiency is added to heap in-core, until based on the general assembly (TW) of cooling medium, till the weight fraction of Zn-ef ficiency reaches more than 0.0025wt%.
What provide according to the utility model comprises the ADS reactor with adding zinc pipe to the device of zincification in the plumbous bismuth eutectic alloy of ADS reactor, can add Zn-ef ficiency, form fine and close sull, thus improve serviceable life and the security of reactor to heap in-core.
Accompanying drawing explanation
Fig. 1 illustrate according to a kind of preferred implementation of the utility model with the ADS reactor structure schematic diagram adding zinc pipe.
Drawing reference numeral illustrates:
1-adds zinc pipe
2-reactor core
3-steam generator
Embodiment
Below by drawings and Examples, the utility model is further described.Illustrated by these, feature of the present utility model and advantage will become more explicit.
Word " exemplary " special here means " as example, embodiment or illustrative ".Here need not be interpreted as being better than or being better than other embodiment as any embodiment illustrated by " exemplary ".Although the various aspects of embodiment shown in the drawings, unless otherwise indicated, accompanying drawing need not be drawn in proportion.
ADS described in the utility model refers to the subcritical system of Accelerator driven, is preferably Accelerator Driven Subcritical clean nuclear power system.
A kind of device to zincification in the plumbous bismuth eutectic alloy of ADS reactor is provided according to the utility model, this device is included in the ADS reactor that top offers zincification hole, wherein, what in described ADS reactor, be provided through described zincification hole adds zinc pipe 1, the described zinc pipe that adds extends near reactor core, in reactor core, zinc powder or weak acid zinc salt or the adjuvant containing Zn-ef ficiency is added by the described zinc pipe that adds, namely add zinc pipe described in be mainly used in adding Zn-ef ficiency to heap in-core, thus make to pile the sull that in-core forms densification, improve the serviceable life of reactor core, reduce and damage risk, further, described sull is specifically formed on all metal surfaces that can contact with lead bismuth alloy of ADS reactor inside, protection is provided to described metal surface, comprise the reactor core 2 of reactor inside and the outside surface of steam generator 3, the composition of sull mainly comprises AB
2o
4the spinel structure of form, wherein A represents bivalent cation, mainly refers to Fe
2+, Ni
2+, Co
2+and Zn
2+deng, B represents Tricationic, mainly refers to Fe
3+and Cr
3+.
In one preferred embodiment, described zincification tube section can be circle, rectangle, polygon etc., and be preferably arranged to circle in the utility model, the internal diameter that described circle adds zinc pipe is 3mm-5mm, can meet zincification amount and zincification speed.
In one preferred embodiment, described in add zinc pipe quantity can be one or more, preferably arrange one in the utility model and add zinc pipe, one adds zinc pipe and enough Zn-ef ficiency namely can be provided to form sull.
In one preferred embodiment, the described zinc pipe that adds has predetermined radian in the one end near reactor core, described radian makes to add the top of zinc pipe at the distal opening direction orientating reaction heap of ADS reactor inside, thus the Zn-ef ficiency entered in reactor by adding zinc pipe upwards can flow along with lead bismuth alloy, be dispersed in whole reactor fully inner, improve the homogeneity of sull distribution, also can improve the synthesis speed of high oxide film.
In one preferred embodiment, described zincification hole is provided with closeable capping, after zincification operation completes, by lidstock zincification hole, prevents the materials such as the cooling medium of heap in-core from flowing out from zincification hole; Containing portion and injection portion is had in described capping outer setting, described containing portion is deposit the zinc-containing substance of reactor core to be added, described zinc-containing substance comprises zinc powder or weak acid zinc salt or the adjuvant etc. containing Zn-ef ficiency, described injection portion is connected with containing portion, injection portion has injection power source, for the zinc-containing substance in containing portion is joined in reactor core by zincification hole, and described injection portion can record the amount added, what can stop zinc-containing substance at any time adds operation, to ensure the accurate of zinc-containing substance addition.
In one preferred embodiment, time not moisture in the cooling medium of ADS reactor, as in the reactor that cools at non contact metal, in reactor core, add adjuvant containing Zn-ef ficiency by the described zinc pipe that adds, time moisture in the cooling medium of ADS reactor, in reactor core, zinc powder or weak acid zinc salt or the adjuvant containing Zn-ef ficiency is added by the described zinc pipe that adds, described containing implication water in the adjuvant of Zn-ef ficiency, by the addition manner of above-mentioned Zn-ef ficiency, ensure that Zn-ef ficiency can react under the environment having water, to produce sull, in the process of zincification, the mass flowrate of Zn-ef ficiency is 0.0003778kg/s ~ 0.00181kg/s, to reduce the impact of admixture confrontation cooling medium work quality, ensure suitable sull synthesis speed, in addition, due to the water inertia of lead bismuth alloy, after the method provided according to the utility model is added into water, the water added can not affect the performance of cooling medium.
In one preferred embodiment, the particle diameter of described zinc powder or weak acid zinc salt is 0.5 μm ~ 10 μm, described zinc powder purity is all more than 99%, further preferably, the purity of described zinc powder is preferably more than 99.99%, and in described weak acid zinc salt, the percent by weight of Zn-ef ficiency is 35% ~ 42%, and preferably about 40%, and the impurity in zinc powder and weak acid zinc salt does not affect for the formation of sull, does not also affect the hot physical property of lead bismuth alloy.
In one preferred embodiment, the described adjuvant containing Zn-ef ficiency comprises water and weak acid zinc salt, and can be salt of weak acid solution, also can be the potpourri of salt of weak acid solution and salt of weak acid, described weak acid zinc salt comprises zinc formate or zinc acetate.
In further preferred embodiment, containing in the adjuvant of Zn-ef ficiency, based on the general assembly (TW) of the described adjuvant containing Zn-ef ficiency, the weight fraction of Zn-ef ficiency is 0.005-0.007wt%.
In one preferred embodiment, the monitoring device of Zn-ef ficiency concentration in its internal coolant of Real-Time Monitoring is provided with at described heap in-core, when described monitoring device monitors the general assembly (TW) based on cooling medium, the weight fraction of Zn-ef ficiency is lower than during for 0.0015wt%, zinc powder or weak acid zinc salt or the adjuvant containing Zn-ef ficiency is added to heap in-core, until based on the general assembly (TW) of cooling medium, till the weight fraction of Zn-ef ficiency reaches more than 0.0025wt%.
In one preferred embodiment, cooling medium in described reactor and the flow direction of lead bismuth alloy are as shown in the black arrow in Fig. 1, from the Zn-ef ficiency added zinc pipe out along with cooling medium upwards flows, finally flow through whole reactor system, make its inner all metal surface contacted with cooling medium form sull.
According to the utility model provide containing the reactor adding zinc pipe; generally adding cooling medium therein later namely can by adding zinc pipe zincification wherein; along with the work of reactor; the oxide film wearing and tearing gradually of its inside; Zn-ef ficiency in cooling medium is constantly supplemented in oxide film; reactor core is made to obtain adequately protecting of oxide film; and the Zn-ef ficiency content in cooling medium constantly declines along with the consumption of Zn-ef ficiency; so open zincification hole when detecting that in cooling medium, Zn-ef ficiency content is too low, to its inner zincification.
According to the method to zincification in the plumbous bismuth eutectic alloy of ADS reactor that the utility model provides, the method is by adopting above-mentioned realizing to the device of zincification in the plumbous bismuth eutectic alloy of ADS reactor, be provided with the reactor core adding zinc pipe, add the Zn-ef ficiency of matters quantity on suitable opportunity to heap in-core by the described zinc pipe that adds, make it form fine and close oxide film.
What provide according to the utility model comprises the reactor with adding zinc pipe to the device of zincification in the plumbous bismuth eutectic alloy of ADS reactor, can add Zn-ef ficiency, form fine and close sull, thus improve serviceable life and the security of reactor in reactor.
More than combine and preferred embodiment the utility model is illustrated, but these embodiments are only exemplary, only play illustrative effect.On this basis, can carry out multiple replacement and improvement to the utility model, these all fall in protection domain of the present utility model.
Claims (4)
1. the device to zincification in the plumbous bismuth eutectic alloy of ADS reactor, it is characterized in that, this device is included in the ADS reactor that top offers zincification hole, what in described ADS reactor, be provided through described zincification hole adds zinc pipe (1), the described zinc pipe (1) that adds extends near reactor core, described in add zinc pipe (1) for adding zinc powder or weak acid zinc salt or the adjuvant containing Zn-ef ficiency in ADS reactor.
2. the device to zincification in the plumbous bismuth eutectic alloy of ADS reactor according to claim 1, it is characterized in that, described zincification tube section is rounded, and the internal diameter adding zinc pipe is 3mm-5mm.
3. the device to zincification in the plumbous bismuth eutectic alloy of ADS reactor according to claim 1, it is characterized in that, the described zinc pipe that adds has predetermined radian in the one end near reactor core, and described radian makes to add the top of zinc pipe at the distal opening direction orientating reaction heap of ADS reactor inside.
4. the device to zincification in the plumbous bismuth eutectic alloy of ADS reactor according to claim 1, is characterized in that, described zincification hole is provided with closeable capping, have containing portion and injection portion in described capping outer setting.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520309132.2U CN204926810U (en) | 2015-05-14 | 2015-05-14 | Device to zincification among plumbous bismuth eutectic alloy of ADS reactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520309132.2U CN204926810U (en) | 2015-05-14 | 2015-05-14 | Device to zincification among plumbous bismuth eutectic alloy of ADS reactor |
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| CN204926810U true CN204926810U (en) | 2015-12-30 |
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| CN201520309132.2U Expired - Fee Related CN204926810U (en) | 2015-05-14 | 2015-05-14 | Device to zincification among plumbous bismuth eutectic alloy of ADS reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882184A (en) * | 2015-05-14 | 2015-09-02 | 华北电力大学 | Device and method for adding zinc to ADS reactor lead-bismuth eutectic alloy |
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2015
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882184A (en) * | 2015-05-14 | 2015-09-02 | 华北电力大学 | Device and method for adding zinc to ADS reactor lead-bismuth eutectic alloy |
| CN104882184B (en) * | 2015-05-14 | 2017-03-29 | 华北电力大学 | The device and method of zincification in ADS reactor lead bismuth eutectic alloys |
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|---|---|---|---|
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20210514 |