CN104392755A - Liquid-state heavy metal oxygen concentration control solid-liquid exchange reaction apparatus under flowing working condition - Google Patents
Liquid-state heavy metal oxygen concentration control solid-liquid exchange reaction apparatus under flowing working condition Download PDFInfo
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- CN104392755A CN104392755A CN201410493941.3A CN201410493941A CN104392755A CN 104392755 A CN104392755 A CN 104392755A CN 201410493941 A CN201410493941 A CN 201410493941A CN 104392755 A CN104392755 A CN 104392755A
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/02—Devices or arrangements for monitoring coolant or moderator
- G21C17/022—Devices or arrangements for monitoring coolant or moderator for monitoring liquid coolants or moderators
- G21C17/025—Devices or arrangements for monitoring coolant or moderator for monitoring liquid coolants or moderators for monitoring liquid metal coolants
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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
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Abstract
The present invention discloses a liquid-state heavy metal oxygen concentration control solid-liquid exchange reaction apparatus under the flowing working condition, wherein the oxygen concentration in the whole liquid-state heavy metal system is adjusted by controlling the temperature and the flow rate of the liquid-state heavy metal flowing through a reaction container. With the apparatus of the present invention, the problems of the reaction container temperature control, no damage of the mass exchanger on the whole reaction container and the like are cleverly solved. The apparatus comprises a mass exchanger, an oxygen measurement meter, a built-in heating rod, a built-in thermocouple, an air cooling device, a filtration screen type filter, a liquid-state metal valve, a liquid-state metal flow meter, and a reaction container. According to the present invention, the temperature of the liquid-state heavy metal is stable and controllable; the electronically controlled liquid-state metal valve and the liquid-state metal flow meter are adopted to precisely control the flow rate of the liquid-state metal in the reaction container; the filtration screen type filter is arranged, the impurity in the liquid-state heavy metal can be filtered out, and the influence of entering of the impurity into the mass exchanger and adsorbing on the surface of oxygen source particles on the oxygen source particle oxygen exchange efficiency can be prevented; and the flange type or ferrule type connection is adopted so as to provide characteristics of easy removal, easy replacement and easy maintenance.
Description
Technical field
The present invention is applicable to nucleus industry and nuclear technology field, is mainly used in Accelerator Driven Subcritical heap (ADS) and advanced reactor liquid metal coolant oxygen content On-line Control.
Background technology
Liquid lead bismuth alloy LBE (Lead bismuth eutectic) is the preferred material of spallation target and the important candidate material of cooling medium of advanced fast reactor in the subcritical system (ADS) of Accelerator driven.The thermophysical property special due to liquid lead bismuth and chemical property, such as low melting point (123.5 DEG C), higher boiling (1670 DEG C), high heat conductance, low-steam pressure and do not have violent reaction etc. with air and water, liquid lead bismuth is worldwide extensively studied as the cooling medium of ADS spallation target and advanced fast reactor at present.
But it becomes its maximum restriction of extensively using to the corrosivity of steel.Liquid lead bismuth has very severe corrosive to the steel be directly exposed to wherein under middle hot environment.In liquid lead bismuth, in order to prevent the corrosion of material from must there is certain active dissolved oxygen DO, the activity of dissolved oxygen DO, sufficiently mainly with avoiding the thermodynamics of material oxidation layer to dissolve, plays the effect of protective material.But the oxygen activity that will generate lower than PbO, will cause solid-state PbO to separate out if exceeded, and forms oxide residue, pollutes whole liquid lead bismuth system simultaneously.In a word, the operating conditions of liquid lead bismuth must ensure the kinetic balance of oxide layer on surface of material and prevent oxide precipitation from generating.Due to above reason, the dissolved oxygen DO in monitor and forecast liquid lead bismuth is necessary.The method of current control oxygen concentration mainly contains vapor phase method and solid phase method two kinds.The document display published only has the application of solid phase oxygen control in some loop apparatus.Existing one is applicable to experiment solid phase oxygen control device (patent is open), and liquid lead bismuth is static, is applicable to solid phase oxygen control study mechanism, and the control of following solid phase oxygen will be used in lead base reactor, and the operating mode of plumbous bismuth is flowing.The technological difficulties realizing the control of solid phase oxygen under plumbous bismuth flow operating mode are in PbO grain dissolution and deposition process the preventing poison of the accurate control and PbO particle that flow through plumbous bismuth temperature and flow in mass exchanger (corrode Impurity deposition at PbO particle surface, PbO grain dissolution and deposit function and will lose efficacy).The present invention will overcome these difficult points.Under developing a kind of flow operating mode, liquid heavy metal oxygen concentration controls solid-liquid exchange reaction device, is both suitable for Study on Correlative Mechanisms, has larger engineer applied simultaneously and is worth.
Summary of the invention
The technical matters that quasi-solution of the present invention is determined is: overcome the deficiencies in the prior art, provides a kind of security good and structure is simple, convenient operation, and the experimental provision of solid phase oxygen control techniques under being applicable to realize flow operating mode.
The technical matters scheme that quasi-solution of the present invention is determined is: under a kind of flow operating mode, liquid heavy metal oxygen concentration controls solid-liquid exchange reaction device, comprising: liquid metal valve, liquid metal flux meter, reaction vessel, net type filter, oxygen analyser, air cooling device, mass exchanger, built-in heating rod and built-in thermoelectric are even; Wherein liquid metal valve, liquid metal flux meter, net type filter, oxygen analyser are connected on reaction vessel gateway, air cooling device is wrapped in reaction vessel periphery, and mass exchanger, built-in heating rod and built-in thermoelectric are even by cutting ferrule or Flange joint on the reaction vessel; Described mass exchanger is connected with reaction vessel by standard flange, is positioned at reaction vessel cylinder center, is inserted into reaction container bottom, is easy to change; Described built-in heating rod and air cooling device carry out heating and cooling to flowing through liquid heavy metal in mass exchanger, regulates the power of heating or cooling, be used for obtaining suitable liquid heavy metal temperature; In described net type filter filter liquid state heavy metal, impurity prevents impurity from entering in interchanger and is adsorbed on oxygen source particle surface, affects the efficiency that oxygen source particle oxygen exchanges; Open front and back liquid metal valve, regulated by liquid metal flux meter by-pass valve control aperture and flow through liquid heavy metal flow in reaction vessel, after well strainer filters solid impurity wherein after filtration again, in oxygen analyser detection liquid heavy metal, oxygen concentration feeds back to control system and regulates air cooling device cooling power and built-in heating rod heating power to make liquid heavy metal arrive suitable temperature fast, and such liquid heavy metal is carried suitable oxygen concentration after flowing through mass exchanger and oxygen source particle generation oxygen exchange reaction and flowed out reaction vessel.
Further, mass exchanger is by freely stretching spring and oxygen source particle is fixed in mass exchanger by the pressure strip that is connected with spring, to extend when oxygen source has certain consumption freely to stretch spring, mass exchanger inner volume change after compensatory reactionBu Changfanying a period of time, such oxygen source particle is still tightly fixed in mass exchanger, the cylinder wherein holding oxygen source particle is porous structure, guarantee liquid heavy metal can smoothly by with the effect of oxygen source particle.
The advantage that the present invention compared with prior art has is as follows:
(1) overall construction design of the present invention is simple, be easy to realize and operation, mass exchanger, net type filter, lambda sensor, built-in heating rod, built-in thermoelectric are even etc. all adopts flange form or bite type to connect, and solves being tightly connected of device, dismantles the problems such as difficulty; Adopt net type filter to prevent impurity from entering in mass exchanger to be adsorbed on PbO particle surface (anti-PbO particle is poisoned), to affect the efficiency that PbO particle oxygen exchanges, be commonly used to advanced reactor oxygen control experimental study simultaneously.
(2) the present invention is by freely stretching spring and oxygen source particle is fixed in mass exchanger by the pressure strip that is connected with spring, to extend when oxygen source has certain consumption freely to stretch spring, mass exchanger inner volume change after compensatory reactionBu Changfanying a period of time, such oxygen source particle is still tightly fixed in mass exchanger, preventing PbO particles float holding the first half of cylinder of oxygen source particle, affecting oxygen exchange efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention; In figure: 1 is liquid metal valve, 2 is liquid metal flux meter, and 3 is reaction vessel, and 4 is net type filter, and 5 is oxygen analyser, and 6 is air cooling device, and 7 is mass exchanger, and 8 is built-in heating rod, and 9 is that built-in thermoelectric is even;
Fig. 2 is mass exchanger schematic diagram in the present invention; In figure: A1 is flange, A2 is holddown spring, and A3 is pressure strip, and A4 is the cylinder holding PbO particle, and A5 is fixed bar, and A6 is PbO particle, and A7 is hold-down nut.
Embodiment
The present invention is further illustrated below in conjunction with accompanying drawing and specific embodiment.
As shown in Figure 1, under a kind of flow operating mode, liquid heavy metal oxygen concentration controls solid-liquid exchange reaction device, and this device comprises: liquid metal valve 1, liquid metal flux meter 2, reaction vessel 3, net type filter 4, oxygen analyser 5, air cooling device 6, mass exchanger 7, built-in heating rod 8 and built-in thermoelectric even 9.First by the accompanying-heat cable of built-in heating rod 8 and reaction vessel 3 periphery, whole device is preheated to 300 DEG C, is incubated 12 hours, slowly by plumbous bismuth injection experiments system and this device; In experimental system, lambda sensor outgoing signal shows that the oxygen concentration of plumbous bismuth is too low feeds back to control system, strengthen the heating power of built-in heating rod 8 and improve liquid metal valve 1 aperture, the plumbous bismuth temperature and the flow velocity that flow through mass exchanger like this all improve, strengthen the dissolving of PbO particle, producing Pb after PbO dissolves dissolves in lead bismuth alloy with [O], so plumbous bismuth flows out reaction vessel and will carry a large amount of oxygen in whole plumbous bismuth system, and the oxygen analyser 5 of outlet detects oxygen concentration signal higher than import oxygen analyser 5; In like manner, in experimental system, lambda sensor outgoing signal to show in plumbous bismuth that oxygen concentration is too high feeds back to control system, reduce the heating power of built-in heating rod 8 and start air cooling device 6 and reduce liquid metal valve 1 aperture, the plumbous bismuth temperature and the flow velocity that flow through mass exchanger like this all reduce, strengthen dissolved oxygen DO [O] and Pb in plumbous bismuth and form the deposition of PbO particle, be attached to PbO particle surface or stopped by net type filter 4, so plumbous bismuth flows out reaction vessel oxygen concentration to be reduced, and the oxygen analyser 5 of import detects oxygen concentration signal higher than outlet oxygen analyser 5.By automatic control system, realize oxygen concentration in plumbous bismuth and automatically regulate.
As shown in Figure 2, be the structural representation of mass exchanger 7, primary structure comprises: the composition such as flange A1, holddown spring A2, pressure strip A3, the cylinder A4 holding PbO particle, fixed bar A5, PbO particle A6, hold-down nut A7.PbO particle becomes spherical shape, be arranged closely in the cylinder holding PbO particle, by pressure strip and the holddown spring be through in fixed bar, PbO particle is tightly pushed down, when PbO particle diminishes gradually owing to dissolving, spring will extend, and will tightly be fixed in the cylinder holding PbO particle by PbO particle by pushing away pressure strip.Plumbous bismuth enters mass exchanger inside by the porous of the cylinder periphery holding PbO particle and reacts with PbO particle, leaves mass exchanger after carrying out oxygen exchange.Whole mass exchanger is fixed on reaction vessel 3 by flange.
Non-elaborated part of the present invention belongs to techniques well known.
And the above; be only the embodiment in the present invention; but protection scope of the present invention is not limited thereto; any people being familiar with this technology is in the technical scope disclosed by the present invention; the conversion or replacement expected can be understood; all should be encompassed in and of the present inventionly comprise within scope, therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (2)
1. under flow operating mode, liquid heavy metal oxygen concentration controls a solid-liquid exchange reaction device, it is characterized in that comprising: liquid metal valve (1), liquid metal flux meter (2), reaction vessel (3), net type filter (4), oxygen analyser (5), air cooling device (6), mass exchanger (7), built-in heating rod (8) and built-in thermoelectric even (9), wherein liquid metal valve (1), liquid metal flux meter (2), net type filter (4), oxygen analyser (5) are connected on reaction vessel (3) gateway, it is peripheral that air cooling device (6) is wrapped in reaction vessel (3), mass exchanger (7), built-in heating rod (8) and built-in thermoelectric idol (9) by cutting ferrule or Flange joint on reaction vessel (3), described mass exchanger (7) is connected with reaction vessel (3) by standard flange, is positioned at reaction vessel (3) cylinder center, is inserted into reaction container bottom, is easy to change, described built-in heating rod (8) and air cooling device (6) carry out heating and cooling to flowing through liquid heavy metal in mass exchanger, regulates the power of heating or cooling, be used for obtaining suitable liquid heavy metal temperature, impurity in described net type filter (4) filter liquid state heavy metal, prevents impurity from entering in interchanger and is adsorbed on oxygen source particle surface, affects the efficiency that oxygen source particle oxygen exchanges, open front and back liquid metal valve (1), regulated by liquid metal flux meter (2) by-pass valve control aperture and flow through liquid heavy metal flow in reaction vessel (3), after well strainer (4) filters solid impurity wherein after filtration again, in oxygen analyser (5) detection liquid heavy metal, oxygen concentration feeds back to control system and regulates air cooling device (6) cooling power and built-in heating rod (8) heating power to make liquid heavy metal arrive suitable temperature fast, such liquid heavy metal is carried suitable oxygen concentration after flowing through mass exchanger (7) and oxygen source particle generation oxygen exchange reaction and is flowed out reaction vessel.
2. under a kind of flow operating mode according to claim 1, liquid heavy metal oxygen concentration controls solid-liquid exchange reaction device, it is characterized in that: mass exchanger (7) is by freely stretching spring and oxygen source particle is fixed in mass exchanger by the pressure strip that is connected with spring, to extend when oxygen source has certain consumption freely to stretch spring, mass exchanger (7) inner volume change after compensatory reactionBu Changfanying a period of time, such oxygen source particle is still tightly fixed in mass exchanger (7), the cylinder wherein holding oxygen source particle is porous structure, guarantee liquid heavy metal can smoothly by with the effect of oxygen source particle.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016533887A (en) * | 2013-08-26 | 2016-11-04 | ジョイント ストック カンパニー“アクメ−エンジニアリング” | Mass transmission device |
| CN106531237A (en) * | 2016-12-29 | 2017-03-22 | 中科瑞华原子能源技术有限公司 | Running device for lead-base reactor coolant process system |
| CN106601314A (en) * | 2016-12-30 | 2017-04-26 | 中国科学院合肥物质科学研究院 | Oxygen control system and oxygen control method for lead-based reactor coolant |
| CN106774481A (en) * | 2016-12-12 | 2017-05-31 | 中广核研究院有限公司 | The apparatus and system of oxygen concentration in a kind of control liquid LBE/Pb cooling agents |
| CN107610788A (en) * | 2017-09-28 | 2018-01-19 | 岭东核电有限公司 | Solid oxygen control device |
| CN110284043A (en) * | 2019-07-23 | 2019-09-27 | 深圳市启晟新材科技有限公司 | A kind of 200-300 degree nuclear reactor control oxygen type liquid metal and its compatibility technique |
| CN110295300A (en) * | 2019-07-16 | 2019-10-01 | 深圳市启晟新材科技有限公司 | A kind of photo-thermal field 100-200 degree control oxygen type liquid metal compatible with stainless steel and its technique |
| CN110306098A (en) * | 2019-07-23 | 2019-10-08 | 深圳市启晟新材科技有限公司 | A kind of heat transfer of nuclear reactor 300-400 degree liquid metal and its control oxygen activity technique |
| CN110306090A (en) * | 2019-07-14 | 2019-10-08 | 深圳市启晟新材科技有限公司 | A kind of electronic chip 80-120 degree the control oxygen type liquid metal of resistance to corrosive pipeline and its technique |
| CN110317972A (en) * | 2019-07-16 | 2019-10-11 | 深圳市启晟新材科技有限公司 | A kind of control oxygen activity is in the 200-300 degree liquid metal compatible with stainless steel and its technique |
| CN110317988A (en) * | 2019-07-14 | 2019-10-11 | 深圳市启晟新材科技有限公司 | A kind of electronic chip 120-180 degree the control oxygen type liquid metal of resistance to corrosive pipeline and its technique |
| CN110343926A (en) * | 2019-07-14 | 2019-10-18 | 深圳市启晟新材科技有限公司 | A kind of electronic chip 40-80 degree the control oxygen type liquid metal of resistance to corrosive pipeline and its technique |
| CN110343933A (en) * | 2019-07-16 | 2019-10-18 | 深圳市启晟新材科技有限公司 | A kind of photo-thermal field 300-400 degree control oxygen type liquid metal compatible with stainless steel and its technique |
| CN111812969A (en) * | 2020-06-30 | 2020-10-23 | 浙江高晟光热发电技术研究院有限公司 | Dissolved oxygen control device and dissolved oxygen control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2016533887A (en) * | 2013-08-26 | 2016-11-04 | ジョイント ストック カンパニー“アクメ−エンジニアリング” | Mass transmission device |
| CN106774481A (en) * | 2016-12-12 | 2017-05-31 | 中广核研究院有限公司 | The apparatus and system of oxygen concentration in a kind of control liquid LBE/Pb cooling agents |
| CN106774481B (en) * | 2016-12-12 | 2023-11-14 | 中广核研究院有限公司 | Device and system for controlling oxygen concentration in liquid LBE/Pb coolant |
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| CN107610788A (en) * | 2017-09-28 | 2018-01-19 | 岭东核电有限公司 | Solid oxygen control device |
| CN110317988A (en) * | 2019-07-14 | 2019-10-11 | 深圳市启晟新材科技有限公司 | A kind of electronic chip 120-180 degree the control oxygen type liquid metal of resistance to corrosive pipeline and its technique |
| CN110306090A (en) * | 2019-07-14 | 2019-10-08 | 深圳市启晟新材科技有限公司 | A kind of electronic chip 80-120 degree the control oxygen type liquid metal of resistance to corrosive pipeline and its technique |
| CN110343926A (en) * | 2019-07-14 | 2019-10-18 | 深圳市启晟新材科技有限公司 | A kind of electronic chip 40-80 degree the control oxygen type liquid metal of resistance to corrosive pipeline and its technique |
| CN110317972A (en) * | 2019-07-16 | 2019-10-11 | 深圳市启晟新材科技有限公司 | A kind of control oxygen activity is in the 200-300 degree liquid metal compatible with stainless steel and its technique |
| CN110295300A (en) * | 2019-07-16 | 2019-10-01 | 深圳市启晟新材科技有限公司 | A kind of photo-thermal field 100-200 degree control oxygen type liquid metal compatible with stainless steel and its technique |
| CN110343933A (en) * | 2019-07-16 | 2019-10-18 | 深圳市启晟新材科技有限公司 | A kind of photo-thermal field 300-400 degree control oxygen type liquid metal compatible with stainless steel and its technique |
| CN110306098A (en) * | 2019-07-23 | 2019-10-08 | 深圳市启晟新材科技有限公司 | A kind of heat transfer of nuclear reactor 300-400 degree liquid metal and its control oxygen activity technique |
| CN110284043A (en) * | 2019-07-23 | 2019-09-27 | 深圳市启晟新材科技有限公司 | A kind of 200-300 degree nuclear reactor control oxygen type liquid metal and its compatibility technique |
| CN111812969A (en) * | 2020-06-30 | 2020-10-23 | 浙江高晟光热发电技术研究院有限公司 | Dissolved oxygen control device and dissolved oxygen control system |
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