CN103076820A - Experimental device suitable for solid-phase oxygen control reaction - Google Patents
Experimental device suitable for solid-phase oxygen control reaction Download PDFInfo
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- CN103076820A CN103076820A CN2013100195452A CN201310019545A CN103076820A CN 103076820 A CN103076820 A CN 103076820A CN 2013100195452 A CN2013100195452 A CN 2013100195452A CN 201310019545 A CN201310019545 A CN 201310019545A CN 103076820 A CN103076820 A CN 103076820A
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Abstract
The invention relates to an experimental device suitable for solid-phase oxygen control reaction. The oxygen concentration of liquid lead bismuth is controlled by controlling intermittent immersion of a mass exchanger and the liquid lead bismuth. The device is cleverly designed to solve the problems of seal connection, difficulty in disassembly and the like, and the device is composed of a mass exchanger, a bellows, an oxygen meter, a thermocouple, a seal flange, an air inlet/outlet, a tank body and the like. According to the experimental device, the bellows is adopted to connect and seal, so as to lift the mass exchanger, the oxygen meter and a liquid level meter, and thus, measuring instruments such as the mass exchanger, the oxygen meter and the like do not need to be installed in a high-temperature lead bismuth melting state. Additionally, the bellows is used for lifting the mass exchanger, so that the mass exchanger can be intermittently immersed into the liquid lead bismuth, so as to control the oxygen concentration of the liquid lead bismuth in the tank body.
Description
Technical field
The present invention relates to a kind of pre-grinding device for Accelerator Driven Subcritical heap (ADS) oxygen control technology, for the oxygen control techniques of following ADS reactor provides simple research platform and tachnical storage.
Background technology
Liquid lead bismuth alloy LBE (Lead bismuth eutectic) is the preferred material of hash target in the subcritical system (ADS) of Accelerator driven and the important candidate material of cooling medium of advanced fast reactor.Because special thermophysical property and the chemical property of liquid lead bismuth, low melting point (123.5 ℃) for example, higher boiling (1670 ℃), high heat conductance, low-steam pressure and do not have violent reaction etc. with empty G﹠W, liquid lead bismuth are at present as the cooling medium of ADS spallation target and advanced fast reactor broad research worldwide.
But its corrosivity to steel becomes the restriction of its maximum of extensively using.The liquid lead bismuth has very severe corrosive to the steel that are directly exposed to wherein under middle hot environment.In the liquid lead bismuth, must there be the dissolved oxygen DO of certain activity for the corrosion that prevents material, the activity of dissolved oxygen DO must be abundant to avoid the thermodynamics dissolving of material oxidation layer, plays the effect of protective material.But to be lower than simultaneously the oxygen activity that PbO generates, will cause solid-state PbO to separate out if exceed, form oxide residue, pollute whole liquid lead bismuth system.In a word, the operating conditions of liquid lead bismuth must guarantee the kinetic balance of oxide layer on surface of material and prevent that oxide precipitation from generating.Owing to above reason, the dissolved oxygen DO in monitoring and the control liquid lead bismuth is necessary.At present the method for control oxygen concentration mainly contains two kinds of vapor phase method and solid phase methods.Wherein the solid phase method method only the Russian grasp technique because the possible military use of technique, announced can be for reference data very limited.
Russia's physics and power engineering research institute have designed simple static solid phase oxygen control device.Their device does not use corrugated tube, insert in the plumbous bismuth need such as mass exchanger, lambda sensor at high temperature plumbous bismuth cover again ring flange after melting, need under the argon shield environment, operate, in glove box, increased the operation easier in the experimentation.The present invention will overcome this difficult point.Simultaneously, the demand of oxygen control techniques just a kind ofly is applicable to realize that the experimental provision of solid phase oxygen control reaction can provide oxygen control techniques research Important Platform.
Summary of the invention
The technical matters that quasi-solution of the present invention is determined is: overcome the deficiencies in the prior art, provide that a kind of security is good and simple in structure, the experimental provision that is applicable to realize oxygen control reaction of convenient operation.
The technical matters scheme that quasi-solution of the present invention is determined is: a kind of experimental provision that is applicable to realize solid phase oxygen control reaction comprises: air intake opening 1, vacuum orifice 2, thermopair 3, multiple spot liquid level gauge 4, mass exchanger 5, the second corrugated tube 6, oxygen analyser 7, the first corrugated tube 8, gas outlet 9, rain glass 10 and tank body 11; Described mass exchanger 5 is connected on the ring flange by the first corrugated tube 8, insert in the tank body 11 by 6 liftings of the second corrugated tube again, by the second corrugated tube 6 mass exchanger 5 lower ends are controlled on the liquid lead bismuth liquid level, intermittence is controlled at mass exchanger 5 under the liquid lead bismuth liquid level by lifting the second corrugated tube 6 or the first corrugated tube 8 again, like this by realizing the control of oxygen concentration in the intermittent submergence liquid lead bismuth of mass exchanger 5; Described oxygen analyser 7 is connected on the ring flange by cutting ferrule and pipe, multiple spot liquid level gauge 4 is connected on the ring flange by little flange, thermopair 3 is connected on the ring flange by cutting ferrule and pipe, and all be inserted in the tank body 11 by 6 liftings of the second corrugated tube, measure respectively the oxygen concentration of liquid lead bismuth, the degree of depth of insertion and the temperature of liquid lead bismuth; Described air intake opening 1, gas outlet 9 and vacuum orifice 2 directly are welded on the ring flange and are communicated with tank body 11, and all join a ball valve; Described rain glass 10 is connected to reaction chamber by pipe on the ring flange, measures the air pressure of whole reaction chamber.
Described multiple spot liquid level gauge 4 has 4 liquid-level probes, and the longest liquid level gauge is contour with oxygen analyser 7 bottoms; Vice-minister's liquid level gauge and mass exchanger 5 bottoms are contour; Inferior short liquid level gauge and mass exchanger 5 centers are contour; The shortest liquid level gauge and mass exchanger top are contour; Can touch in the liquid lead bismuth when the shortest liquid level gauge rigidly connects by regulating the second corrugated tube 6, illustrate in mass exchanger 5 whole submergence liquid lead bismuths, when vice-minister's liquid level gauge has just left liquid lead bismuth liquid level, illustrate that mass exchanger breaks away from the liquid lead bismuth fully.
The advantage that the present invention compared with prior art has is as follows:
(1) overall construction design of the present invention is simple, and security is good, need to not remove and install under the heated condition in special closed container.What solved device is tightly connected, dismantles the problem such as difficulty, and the present invention is easy to realize and operation, can generally be used for plumbous bismuth oxygen control experimental study.
(2) the present invention realizes by two sections corrugated tubes in the intermittent submergence liquid lead bismuth of mass exchanger, thereby realizes that oxygen exchanges to control oxygen concentration in the liquid lead bismuth.By regulating the second corrugated tube mass exchanger is adjusted on the liquid lead bismuth liquid level first, at this moment oxygen analyser has inserted in the liquid lead bismuth, regulate the second corrugated tube by continuation again or regulate the first corrugated tube (length of the first corrugated tube adjusting equals the height of mass exchanger) with in the intermittent submergence liquid lead of the mass exchanger bismuth, liquid lead bismuth oxygen concentration reaches control in the tank body.Like this, need not the surveying instruments such as installation quality interchanger, oxygen analyser under the plumbous bismuth melting state of high temperature.
(3) the present invention uses corrugated tube lifting mass exchanger, can be intermittent with in the mass exchanger submergence liquid lead bismuth, realize the control of liquid lead bismuth oxygen concentration in the tank body.Can realize for a long time like this control of oxygen concentration, can be static corrosion experiment etc. rational oxygen concentration is provided.
(4) oxygen analyser of the present invention is connected on the ring flange by cutting ferrule and pipe, connects by the second corrugated tube to be inserted in the tank body liquid lead bismuth, measures the oxygen concentration in the liquid lead bismuth.The free convenient disassembly oxygen analyser of cutting ferrule pipe is changed, and oxygen analyser and plumbous bismuth were discontiguous when corrugated tube guaranteed the cooling of liquid lead bismuth, avoided the oxygen analyser ceramic pipe to deposit in the Solid Lead bismuth.
(5) gas outlet of the present invention adds a pressure relief valve, and gaseous tension increases when regulating corrugated tube like this, can in time discharge by blowdown valve, and inside will not have larger pressure existence like this, use simultaneously the rain glass detected pressures, guarantee the security of corrugated tube.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is mass exchanger schematic diagram among the present invention.
Embodiment
As shown in Figure 1, the present invention includes air intake opening 1, vacuum orifice 2, thermopair 3, multiple spot liquid level gauge 4, mass exchanger 5, the second corrugated tube 6, oxygen analyser 7, the first corrugated tube 8, gas outlet 9, rain glass 10, tank body 11.At first the Solid Lead bismuth is packed in the tank body, charge weight can be asked by calculation of parameter such as quality, density for the 4/5(that accounts for the tank body capacity after melting); With the first corrugated tube 8 be connected corrugated tube 6 and be stretched to behind the maximum length place and by vacuum orifice 2 device vacuumized about 30min end flanges under the second corrugated tube is connected sealing with tank body 11 after, then close vacuum orifice, fill 99.999% argon gas to 0.12MPa, again vacuumize, repeatedly heat tank body 11 after 3 times the Solid Lead bismuth is melted; After plumbous bismuth melts the second corrugated tube 6 is down regulated, treating that vice-minister's liquid level gauge and liquid lead bismuth rigidly connect stops to regulate the second corrugated tube 6 after touch, at this moment, mass exchanger 5 does not contact with plumbous bismuth, and oxygen analyser 7, thermopair 3 have inserted temperature and the oxygen concentration of surveying respectively the liquid lead bismuth in the liquid lead bismuth; Treat that oxygen concentration measurements in the tank body 11 is lower than the oxygen concentration value of requirement, rigidly connect and stop after touch regulating by regulating the second corrugated tube 6 to the shortest liquid level gauge and liquid lead bismuth, at this moment in the mass exchanger 5 complete submergence liquid lead bismuths, realize the transmission of liquid lead bismuth oxygen between mass exchanger 5 and the tank body 11, until being converted into oxygen concentration behind oxygen analyser 7 outgoing signals in suitable scope the time, return original state; Or treat that oxygen concentration measurements in the tank body 11 is lower than the oxygen concentration value of requirement, regulate the first corrugated tube 8, regulating length is the height of mass exchanger, at this moment mass exchanger 5 is also fully in the submergence liquid lead bismuth, realize the transmission of liquid lead bismuth oxygen between mass exchanger 5 and the tank body 11, until being converted into oxygen concentration behind oxygen analyser 7 outgoing signals in suitable scope the time, return original state.
As shown in Figure 2; be the structural representation of mass exchanger 5, primary structure comprises: PbO particle A10 in connection handle A1, outer protective cover A2, the outlet of liquid lead bismuth A3, internal protection layer A4, outlet buffering A5, reaction vessel outlet A6, liquid lead bismuth import A7, the A8 of switch room, metal filter A9, the reaction vessel.Wherein A1 links to each other with connecting link, liquid metal enters into from A7 and arrives reaction vessel and the exchange of PbO particle generation oxygen after the A8 of switch room sees through metal filter A9, liquid metal enters buffer zone A5 by reaction vessel outlet A6 after again seeing through lower end metal filter after the exchange, promote rear the outflow from the A3 outlet with whole mass exchanger and enter tank body, realize the oxygen concentration exchange.A2 is the outer protective cover of reaction vessel, and A4 is protective cover in the reaction vessel, and the metal filter is fixed between the interior protective cover exactly.Beginning mass exchanger integral body is higher than liquid lead bismuth liquid level, then by regulating the second corrugated tube 6 or the first corrugated tube 8 with in its whole submergence liquid lead bismuths, PbO with again mass exchanger is promoted after the liquid lead bismuth fully mixes, the liquid lead bismuth entered tank body from outlet A3 outflow after the oxygen exchange occured, and reached the purpose of control oxygen.
The non-elaborated part of the present invention belongs to techniques well known.
And the above; only be the embodiment among the present invention; but protection scope of the present invention is not limited to this; anyly be familiar with the people of this technology in the disclosed technical scope of the present invention; can understand conversion or the replacement expected; all should be encompassed in of the present invention comprising within the scope, therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (2)
1. an experimental provision that is applicable to realize solid phase oxygen control reaction is characterized in that comprising: air intake opening (1), vacuum orifice (2), thermopair (3), multiple spot liquid level gauge (4), mass exchanger (5), the second corrugated tube (6), oxygen analyser (7), the first corrugated tube (8), gas outlet (9), rain glass (10) and tank body (11); Described mass exchanger (5) is connected on the ring flange by the first corrugated tube (8), insert in the tank body (11) by the second corrugated tube (6) lifting again, by the second corrugated tube (6) mass exchanger (5) lower end is controlled on the liquid lead bismuth liquid level, intermittence is controlled at mass exchanger (5) under the liquid lead bismuth liquid level by lifting the second corrugated tube (6) or the first corrugated tube (8) again, like this by realizing the control of oxygen concentration in the intermittent submergence liquid lead bismuth of mass exchanger (5); Described oxygen analyser (7) is connected on the ring flange by cutting ferrule and pipe, multiple spot liquid level gauge (4) is connected on the ring flange by little flange, thermopair (3) is connected on the ring flange by cutting ferrule and pipe, and all pass through the second corrugated tube (6) lifting and be inserted in the tank body (11), measure respectively the oxygen concentration of liquid lead bismuth, the degree of depth of insertion and the temperature of liquid lead bismuth; Described air intake opening (1), gas outlet (9) and vacuum orifice (2) directly are welded on the ring flange and are communicated with tank body (11), and all join a ball valve; Described rain glass (10) is connected to reaction chamber by pipe on the ring flange, measures the air pressure of whole reaction chamber.
2. a kind of experimental provision that is applicable to realize solid phase oxygen control reaction according to claim 1, it is characterized in that: described multiple spot liquid level gauge (4) has 4 liquid-level probes, and the longest liquid level gauge is contour with oxygen analyser (7) bottom; Vice-minister's liquid level gauge and mass exchanger (5) bottom is contour; Inferior short liquid level gauge and mass exchanger (5) center are contour; The shortest liquid level gauge and mass exchanger top are contour; Can touch in the liquid lead bismuth when the shortest liquid level gauge rigidly connects by regulating the second corrugated tube (6), illustrate in the whole submergence liquid lead bismuths of mass exchanger (5), when vice-minister's liquid level gauge has just left liquid lead bismuth liquid level, illustrate that mass exchanger breaks away from the liquid lead bismuth fully.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104392755A (en) * | 2014-09-24 | 2015-03-04 | 中国科学院合肥物质科学研究院 | Liquid-state heavy metal oxygen concentration control solid-liquid exchange reaction apparatus under flowing working condition |
| CN104614285A (en) * | 2015-02-05 | 2015-05-13 | 中国科学院合肥物质科学研究院 | Device for measuring oxygen transfer rate in liquid metal |
| CN105739552A (en) * | 2016-02-03 | 2016-07-06 | 华北电力大学 | Oxygen control device used for liquid lead or liquid lead-bismuth alloy loop system and method thereof |
| CN111398149A (en) * | 2020-04-30 | 2020-07-10 | 中国核动力研究设计院 | Static immersion test device and test method for liquid lead bismuth environment |
| CN114864119A (en) * | 2022-04-24 | 2022-08-05 | 中国原子能科学研究院 | Oxygen content control device and reaction system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102735737A (en) * | 2012-06-26 | 2012-10-17 | 中国科学院合肥物质科学研究院 | Liquid state alloy oxygen concentration sensor |
| CN102749949A (en) * | 2012-06-29 | 2012-10-24 | 中国科学院合肥物质科学研究院 | Experimental apparatus suitable for realizing oxygen-controlled reaction |
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2013
- 2013-01-18 CN CN201310019545.2A patent/CN103076820B/en active Active
Patent Citations (2)
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| CN102735737A (en) * | 2012-06-26 | 2012-10-17 | 中国科学院合肥物质科学研究院 | Liquid state alloy oxygen concentration sensor |
| CN102749949A (en) * | 2012-06-29 | 2012-10-24 | 中国科学院合肥物质科学研究院 | Experimental apparatus suitable for realizing oxygen-controlled reaction |
Non-Patent Citations (1)
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| 王改英等: "液态铅铋氧浓度测量技术初步研究", 《核科学与工程》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104392755A (en) * | 2014-09-24 | 2015-03-04 | 中国科学院合肥物质科学研究院 | Liquid-state heavy metal oxygen concentration control solid-liquid exchange reaction apparatus under flowing working condition |
| CN104392755B (en) * | 2014-09-24 | 2017-02-15 | 中国科学院合肥物质科学研究院 | Liquid-state heavy metal oxygen concentration control solid-liquid exchange reaction apparatus under flowing working condition |
| CN104614285A (en) * | 2015-02-05 | 2015-05-13 | 中国科学院合肥物质科学研究院 | Device for measuring oxygen transfer rate in liquid metal |
| CN105739552A (en) * | 2016-02-03 | 2016-07-06 | 华北电力大学 | Oxygen control device used for liquid lead or liquid lead-bismuth alloy loop system and method thereof |
| CN105739552B (en) * | 2016-02-03 | 2018-08-28 | 华北电力大学 | For liquid lead or the oxygen control devices and methods therefor of liquid lead bismuth alloy circuit system |
| CN111398149A (en) * | 2020-04-30 | 2020-07-10 | 中国核动力研究设计院 | Static immersion test device and test method for liquid lead bismuth environment |
| CN114864119A (en) * | 2022-04-24 | 2022-08-05 | 中国原子能科学研究院 | Oxygen content control device and reaction system |
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| CN103076820B (en) | 2015-12-23 |
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