CN108444900B - Oxygen-controlled liquid lead bismuth corrosion and ion irradiation cooperative research experiment device and method - Google Patents
Oxygen-controlled liquid lead bismuth corrosion and ion irradiation cooperative research experiment device and method Download PDFInfo
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- CN108444900B CN108444900B CN201810553367.4A CN201810553367A CN108444900B CN 108444900 B CN108444900 B CN 108444900B CN 201810553367 A CN201810553367 A CN 201810553367A CN 108444900 B CN108444900 B CN 108444900B
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- 239000007788 liquid Substances 0.000 title claims abstract description 311
- 229910052797 bismuth Inorganic materials 0.000 title claims abstract description 290
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 title claims abstract description 289
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 93
- 239000001301 oxygen Substances 0.000 title claims abstract description 93
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 93
- 230000007797 corrosion Effects 0.000 title claims abstract description 46
- 238000005260 corrosion Methods 0.000 title claims abstract description 46
- 238000011160 research Methods 0.000 title claims abstract description 33
- 238000002474 experimental method Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000002844 melting Methods 0.000 claims abstract description 43
- 230000008018 melting Effects 0.000 claims abstract description 43
- 238000010884 ion-beam technique Methods 0.000 claims abstract description 35
- 230000005540 biological transmission Effects 0.000 claims abstract description 23
- 229910052751 metal Inorganic materials 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 15
- 239000007789 gas Substances 0.000 claims description 160
- 239000000523 sample Substances 0.000 claims description 67
- 230000004044 response Effects 0.000 claims description 15
- 238000000605 extraction Methods 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 6
- 230000002195 synergetic effect Effects 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 13
- 239000012530 fluid Substances 0.000 abstract description 5
- 238000002601 radiography Methods 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 150000002500 ions Chemical class 0.000 description 25
- 238000009529 body temperature measurement Methods 0.000 description 4
- 229910000909 Lead-bismuth eutectic Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- CJJMLLCUQDSZIZ-UHFFFAOYSA-N oxobismuth Chemical compound [Bi]=O CJJMLLCUQDSZIZ-UHFFFAOYSA-N 0.000 description 1
- 150000002926 oxygen Chemical class 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013077 target material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
-
- 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
Abstract
The invention provides an oxygen-controlled liquid lead bismuth corrosion and ion irradiation collaborative research experimental device and method, wherein the oxygen-controlled liquid lead bismuth corrosion and ion irradiation collaborative research experimental device comprises an ion beam transmission system, a sample cavity and a liquid lead bismuth loop system, and the sample cavity is respectively connected with the ion beam transmission system and the liquid lead bismuth loop system; the liquid lead bismuth loop system comprises a liquid lead bismuth melting tank, an Ar system, a vacuum system and three branch loop pipelines formed after passing through a first liquid lead bismuth valve. The method can be used for carrying out research experiments of liquid lead bismuth corrosion and ion radiography under the condition of different oxygen concentrations, and is favorable for carrying out experimental research on the fluidity of liquid lead bismuth corrosion materials and metal fluid under the condition of different oxygen concentrations.
Description
Technical Field
The disclosure relates to the technical field of material performance test experimental equipment in liquid lead bismuth corrosion and ion irradiation environments, in particular to an oxygen-control liquid lead bismuth corrosion and ion irradiation collaborative research experimental device and method.
Background
The liquid Lead Bismuth Eutectic (LBE) has good neutron, physical and chemical properties, is a currently accepted preferred coolant material for lead-based cooled reactors (LFR) and accelerator driven subcritical systems (ADS), and is also an important ADS spallation target material. Structural materials in advanced nuclear energy systems that are in service in LBE as coolant or spallation target are subject to very severe conditions, not only by high temperature, intense irradiation, but also by intense corrosion caused by liquid lead bismuth. The corrosion behavior of liquid lead bismuth on metal-based structural materials is mainly divided into oxidation corrosion and dissolution corrosion, both of which are related to the concentration of dissolved oxygen in the liquid lead bismuth. At high oxygen level>10 -6 In wt%) environment, metal atoms in the metal-based structural material diffuse outwards and O ions diffuse inwards, so that metal is formed on the surface of the materialThe oxide layer grows to a certain thickness and is easy to fall off, so that the risk of blocking a pipeline is increased. At low oxygen level<10 -8 In wt%) environment, metallic materials Fe, ni and Cr elements can be largely dissolved in corrosive media, resulting in mass loss of structural elements, thereby reducing the mechanical loading capacity of the material. Based on the development of oxygen control technology, the concentration of dissolved oxygen in the liquid lead bismuth is precisely controlled, so that a layer of compact metal oxide layer with moderate thickness is formed on the surface of the material, and the corrosion of the liquid lead bismuth can be effectively prevented or delayed. In neutron radiation environment, irradiation defects (gap and vacancy) generated in the structural material and the surface oxide layer can cause the diffusion coefficient of alloy elements in the metal matrix to be greatly increased due to the irradiation enhanced diffusion effect. Furthermore, the high density of dislocation structures formed by irradiation is believed to be a rapid pathway for diffusion of metal ions and O ions, and thus it is expected that there will be some synergistic effect of neutron irradiation and liquid lead bismuth corrosion in the material. The synergistic effect is considered to be one of the key problems with high priority in the design and construction of the nuclear energy device, but the research on the synergistic effect of the irradiation of the medium and the corrosion of the liquid lead bismuth is very little at present, and the obtained experimental data is very limited, wherein part of reasons are due to the lack of related experimental devices. Chinese patent 2013106302246 mentions an experimental device for studying the synergy of ion irradiation and liquid lead bismuth corrosion, and basically realizes the study of the synergy of irradiation and liquid lead bismuth corrosion, but lacks a liquid lead bismuth oxygen concentration control system, and generally only can conduct the study of the synergy under the condition of saturated oxygen concentration. In addition, the current liquid lead bismuth loop generally lacks a necessary fluid pressure detection system, and has relatively single experimental function.
Disclosure of Invention
First, the technical problem to be solved
The present disclosure provides an oxygen-controlled liquid lead bismuth corrosion and ion irradiation collaborative research experiment device and method to at least partially solve the technical problems set forth above.
(II) technical scheme
According to one aspect of the present disclosure, there is provided an oxygen-controlled liquid lead bismuth corrosion and ion irradiation collaborative research experiment apparatus including: the system comprises a liquid lead bismuth loop system, an ion beam transmission system, a sample cavity and an emergency safety system; the liquid lead bismuth loop system comprises: the liquid lead bismuth melting tank, the liquid lead bismuth storage tank, the oxygen concentration control chamber, the liquid lead bismuth shielding pump, the electromagnetic flowmeter, the liquid lead bismuth flow scale tank, the heat exchanger, the liquid lead bismuth valve component, the pressure sensor component, the temperature measuring probe, the Ar gas system and the vacuum system; the ion beam transport system includes: electromagnetic scanning equipment, a vacuum pipeline, a vacuum pump, a beam detector, an ion beam spot detector, a quick corresponding valve, a liquid lead bismuth leakage tank and a liquid lead bismuth detector; the sample chamber comprises: experimental sample and temperature measuring probe; the liquid lead bismuth loop system and the ion transmission system are connected into a whole through the sample cavity.
In some embodiments of the present disclosure, a liquid lead bismuth valve assembly includes: the first liquid lead bismuth valve, the second liquid lead bismuth valve, the third liquid lead bismuth valve, the fourth liquid lead bismuth valve and the fifth liquid lead bismuth valve; the pressure sensor assembly includes: a first pressure sensor and a second pressure sensor; the liquid lead bismuth melting tank is connected with the first liquid lead bismuth valve through a loop pipeline and is divided into three branches through the loop pipeline of the first liquid lead bismuth valve; the first branch is connected with the sample cavity through an oxygen concentration control chamber, a second liquid lead bismuth valve, a liquid lead bismuth pump and a second pressure sensor which are sequentially arranged on the loop pipeline; the second branch is connected with the sample cavity through a heater, an electromagnetic flowmeter and a third liquid lead bismuth valve which are sequentially arranged on the loop pipeline, and the heat exchanger, a fourth liquid lead bismuth valve and the first pressure sensor; a liquid lead bismuth flow scale tank is arranged between the third liquid lead bismuth valve and the heat exchanger; the third branch is connected with the liquid lead bismuth storage tank through a fifth liquid lead bismuth valve; the first branch, the second branch and the sample cavity form a closed liquid lead bismuth loop; the loop pipeline flowing into the sample cavity and the loop pipeline flowing out of the sample cavity in the liquid lead bismuth loop system are symmetrical V-shaped pipelines; the first pressure sensor is arranged at the inflow section of the V-shaped pipeline; the second pressure sensor is arranged at the outflow section of the V-shaped pipeline.
In some embodiments of the present disclosure, a heater and a heat preservation layer are provided outside the oxygen concentration control chamber cavity; an Ar/H2 mixed gas inlet is formed in the liquid lead bismuth outlet end of the oxygen concentration control chamber, and an exhaust port is formed in the liquid lead bismuth inlet end; the Ar/H2 mixed gas inlet is connected with an Ar/H2 mixed gas steel cylinder through a gas circuit pipeline, and a gas valve and a gas filter are further arranged on the gas circuit pipeline between the Ar/H2 mixed gas steel cylinder and the Ar/H2 mixed gas inlet; oxygen concentration detectors are respectively arranged at the front end and the rear end of the cavity of the oxygen concentration control chamber; the cavity of the oxygen concentration control chamber is also provided with a liquid level detector, a temperature measuring probe and a barometer.
In some embodiments of the present disclosure, a vacuum system includes: vacuum pump, vacuum gauge and vacuum air valve; the vacuum pump is divided into two vacuum branches through a vacuum pipeline; the first vacuum branch is connected with a liquid lead bismuth flow scale tank through a first vacuum valve and a vacuum gauge which are sequentially arranged on the vacuum pipeline; the second vacuum branch is connected with the liquid lead bismuth melting tank through a second vacuum valve and a vacuum gauge which are sequentially arranged on the vacuum sensor; the Ar gas system includes: ar gas cylinder, ar gas valve, ar gas filter and pressure gauge; the Ar gas cylinder is sequentially connected with a first Ar gas valve, a second Ar gas valve and an Ar gas filter through a gas circuit pipeline; an Ar gas pipeline passing through an Ar gas filter is divided into two branches; the first Ar gas branch is connected with a liquid lead bismuth flow scale tank through a third Ar gas valve in sequence; the second Ar gas branch is connected with the liquid lead bismuth melting tank through a fourth Ar gas valve.
In some embodiments of the disclosure, a liquid lead bismuth outlet pipeline is arranged in the liquid lead bismuth melting tank and is closely attached to the inner wall, and the outlet pipeline penetrates out from the side surface above the tank body and is connected with a liquid lead bismuth loop through a first liquid lead bismuth valve; the outer wall of the melting tank is provided with a heater, an insulating layer and a temperature measuring probe; a vacuum cover plate is arranged on the melting tank, and a liquid level meter, an extraction opening, an Ar gas charging opening and a temperature measuring probe are arranged on the cover plate; the temperature measuring probe can be lifted and adjusted; the air extraction opening is connected with a vacuum system; the Ar gas charging port is connected with an Ar gas system; a vacuum cover plate is arranged on the liquid lead bismuth flow scale tank; the bottom of the liquid lead bismuth flow scale tank is connected with a liquid lead bismuth loop pipeline; the outer wall of the liquid lead bismuth flow scale tank is provided with a heater, a heat preservation layer and a temperature measuring probe; a liquid level sensor, a vacuum extraction opening, an Ar gas charging valve and a temperature measuring probe are arranged on the vacuum cover plate of the liquid lead-bismuth flow scale tank; the temperature measuring probe can be lifted and adjusted; the vacuum extraction opening is connected with a vacuum system; the Ar gas charging valve is connected with an Ar gas system.
In some embodiments of the present disclosure, one side of the experimental sample is in the vacuum pipeline of the ion beam current transmission system, opposite to the ion irradiation direction, and the other side of the experimental sample is in contact with liquid lead bismuth in the liquid lead bismuth loop; the temperature measuring probe extends into the liquid lead bismuth and contacts with the surface of the experimental sample.
In some embodiments of the present disclosure, an electromagnetic scanning device in X and Y directions is disposed at a front end of a vacuum tube of an ion beam transport system; the vacuum pipeline is internally provided with a quick response valve, a vacuum pump, a vacuum gauge, a semi-interception type beam detector, a first beam spot detector, a cooling water jacket, an interception type beam detector, a second beam spot detector and a liquid lead bismuth detector in sequence; the semi-interception type beam detector, the first beam spot detector and the second beam spot detector are vertically lifted through pneumatic control.
In some embodiments of the present disclosure, the emergency security system provides two parallel protection systems; the first way protection system comprises: a liquid lead bismuth detector, a liquid lead bismuth shielding pump and a quick response valve; the liquid lead bismuth detector sends out a liquid lead bismuth leakage alarm, the quick response valve can be automatically closed, and meanwhile, the operation of the shielding pump of the liquid lead bismuth loop system is stopped; the second path protection system includes: a vacuum gauge, a liquid lead bismuth shielding pump and a quick response valve; the vacuum gauge sets a vacuum degree alarm threshold value, the vacuum degree of the ion beam transmission system is lower than the threshold value, the valve is quickly responded to be closed, and meanwhile, the operation of the liquid lead bismuth shielding pump of the liquid lead bismuth loop system is stopped.
According to another aspect of the present disclosure, there is provided an oxygen-controlled liquid lead bismuth corrosion and ion irradiation collaborative research experiment method, comprising: step a: before the experimental device is started, firstly placing a metal cast ingot into a liquid lead bismuth melting tank, fastening a vacuum cover plate of the liquid lead bismuth melting tank, starting a vacuum pump of a liquid lead bismuth loop system, opening a first vacuum air valve and a second vacuum air valve of the vacuum system, closing the second vacuum air valve when the vacuum degree of the liquid lead bismuth loop system reaches a set threshold value, and then filling high-purity Ar gas with the pressure higher than one atmosphere; step b: the method comprises the steps of starting a liquid lead bismuth melting tank heater and a liquid lead bismuth loop heat exchanger power supply, when metal in a liquid lead bismuth melting cavity is completely melted, opening a first Ar gas valve, a second Ar gas valve, a third Ar gas valve and an Ar gas charging valve on the liquid lead bismuth melting tank, pressurizing the liquid lead bismuth melting cavity by an Ar gas steel bottle, sequentially opening the first liquid lead bismuth valve to a fourth liquid lead bismuth valve, simultaneously closing a vacuum system second vacuum gas valve to slowly charge the liquid lead bismuth into a circulation loop, and closing the first liquid lead bismuth valve when the liquid lead bismuth is charged to 1/2-2/3 of the volume of an oxygen concentration control chamber according to liquid level information fed back by an oxygen concentration reaction chamber liquid level sensor; step c: starting a liquid lead bismuth shielding pump, and starting circulating flow of the liquid lead bismuth under the driving of the liquid lead bismuth shielding pump; opening valves of an Ar/H2 mixed gas inlet and an Ar/H2 mixed gas outlet of an oxygen concentration control chamber, continuously introducing Ar/H2 mixed gas with a certain flow rate from one end of the Ar/H2 mixed gas inlet, and controlling the oxygen concentration in liquid lead bismuth to a preset target by combining an oxygen concentration detector arranged in front of an oxygen concentration reaction chamber and an oxygen concentration detector arranged behind the oxygen concentration reaction chamber; step d: starting a vacuum pump of the ion beam current transmission system, starting an electromagnetic scanning system when the vacuum of the liquid lead bismuth loop system reaches a set value, and observing the size and uniformity of an ion beam spot in real time through an ion beam spot detector, so as to continuously adjust parameters of the electromagnetic scanning system and ensure that the uniformity of the beam current irradiated on a sample is more than 95%; step e: combining the semi-interception type beam detector and the interception type beam detector to finish the calibration work of the ion beam intensity; before the irradiation experiment starts, the interception type beam detector and the beam spot detector are ensured not to block beam transmission, and the ion irradiation and corrosion synergistic effect experiment under the condition of a certain oxygen concentration can be performed by opening the front end beam transport system.
In some embodiments of the present disclosure, the liquid lead bismuth loop operating temperature range is 200 ℃ to 600 ℃, and the sample chamber temperature is controlled within the range of 300 ℃ to 550 ℃; the flow rate range of the liquid lead bismuth in the liquid lead bismuth loop is 0-3m/s, and the oxygen concentration control range of the liquid lead bismuth is as follows: 10-4-10 wt%.
(III) beneficial effects
According to the technical scheme, the experimental device and the method for the collaborative research of the oxygen-controlled liquid lead bismuth corrosion and the ion irradiation have at least one or a part of the following beneficial effects:
(1) The method can perform research experiments of liquid lead bismuth corrosion and ion radiography under the condition of different oxygen concentrations.
(2) Is favorable for the experimental study of the fluidity of liquid lead bismuth corrosion materials and metal fluid under the condition of different oxygen concentrations.
Drawings
Fig. 1 is a schematic structural diagram of an experimental device for collaborative research on oxygen-controlled liquid lead bismuth corrosion and ion irradiation according to an embodiment of the disclosure.
[ in the drawings, the main reference numerals of the embodiments of the present disclosure ]
1: a lead bismuth melting tank;
1-1: an extraction opening; 1-2: a liquid level gauge;
1-3: a temperature measurement probe; 1-4: an Ar gas charging valve;
1-5: an exhaust port; 1-6: a barometer;
2-1: a first liquid lead bismuth valve; 2-2: a second liquid lead bismuth valve;
2-3: a third liquid lead bismuth valve; 2-4: a fourth liquid lead bismuth valve;
2-5: a fifth liquid lead bismuth valve;
3: a liquid lead bismuth storage tank;
4: a liquid lead bismuth loop vacuum system;
4-1: a vacuum pump; 4-2: a first vacuum valve;
4-3: a second vacuum valve; 4-4: a second vacuum gauge;
4-5: a first vacuum gauge;
5: an Ar gas system;
5-1: ar gas steel cylinder; 5-2: a first Ar gas valve;
5-3: a second Ar gas valve; 5-4: an Ar gas filter;
5-5: a third Ar gas valve; 5-6: a fourth Ar gas valve;
6: an oxygen concentration control chamber;
6-1：Ar/H 2 a mixed gas inlet; 6-2: a gas filter;
6-3: an air valve; 6-4: ar/H 2 A gas mixture steel cylinder;
6-5: an oxygen concentration detector; 6-6: a liquid level gauge;
6-7: a temperature measurement probe; 6-8: an oxygen concentration detector;
6-9: an exhaust port; 6-10: a gas filter;
7: a heater;
8: an electromagnetic flowmeter;
9: a liquid lead bismuth flow scale tank;
9-1: a vacuum extraction opening; 9-2: a liquid level sensor;
9-3: a temperature measurement probe; 9-4: an Ar gas inlet;
9-5: an exhaust port; 9-6: a barometer;
10: a heat exchanger;
11-1: a first pressure sensor; 11-2: a second pressure sensor;
12: a temperature measurement probe;
13: an experimental sample;
14: a liquid lead bismuth shield pump;
15: a liquid lead bismuth detector;
16: a second beam spot detector;
17: an interception type beam detector;
18: a liquid lead bismuth leakage tank;
19: a cooling water jacket;
20: a first beam spot detector;
21: a semi-interception beam detector;
22: a vacuum gauge;
23: a vacuum pump;
24: a vacuum pipe;
25: a quick response valve;
26: an electromagnetic scanning device;
27: ion beam current.
Detailed Description
The invention provides an oxygen-controlled liquid lead bismuth corrosion and ion irradiation collaborative research experimental device and method, wherein the oxygen-controlled liquid lead bismuth corrosion and ion irradiation collaborative research experimental device comprises an ion beam transmission system, a sample cavity and a liquid lead bismuth loop system, and the sample cavity is respectively connected with the ion beam transmission system and the liquid lead bismuth loop system; the liquid lead bismuth loop system comprises a liquid lead bismuth melting tank, an Ar system, a vacuum system and three branch loop pipelines formed after passing through a first liquid lead bismuth valve. The method can be used for carrying out research experiments of liquid lead bismuth corrosion and ion radiography under the condition of different oxygen concentrations, and is favorable for carrying out experimental research on the fluidity of liquid lead bismuth corrosion materials and metal fluid under the condition of different oxygen concentrations.
For the purposes of promoting an understanding of the principles and advantages of the disclosure, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same.
Certain embodiments of the present disclosure will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments are shown. Indeed, various embodiments of the disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements.
In one exemplary embodiment of the present disclosure, an oxygen-controlled liquid lead bismuth corrosion and ion irradiation collaborative research experiment device is provided. Fig. 1 is a schematic structural diagram of an experimental device for collaborative research on oxygen-controlled liquid lead bismuth corrosion and ion irradiation according to an embodiment of the disclosure. As shown in fig. 1, the ion beam ion source comprises an ion beam transmission system, a sample cavity and a liquid lead bismuth loop system, wherein the sample cavity is respectively connected with the ion beam transmission system and the liquid lead bismuth loop system.
The sample cavity is provided with an experimental sample 13 and a temperature probe 12.
The liquid lead bismuth loop system comprises: the liquid lead bismuth melting tank 1, the Ar gas system 5, the liquid lead bismuth loop vacuum system 4 and a loop pipe which passes through the first liquid lead bismuth valve 2-1 and comprises three branches.
The liquid lead bismuth melting tank 1 is connected with a first liquid lead bismuth valve 2-1 through a loop pipeline, and the liquid lead bismuth melting tank 1 is provided with a vacuum cover plate. The Ar gas system 5 is connected with Ar gas charging valves 1-4 arranged on a vacuum cover plate of the liquid lead bismuth melting tank 1. The liquid lead bismuth loop vacuum system 4 is connected with an extraction opening 1-1 arranged on a vacuum cover plate of the liquid lead bismuth melting tank 1. The loop pipeline of the first branch is connected with the sample cavity through the first branch of the first liquid lead bismuth valve 2-1; an oxygen concentration control chamber 6, a second liquid lead bismuth valve 2-2, a liquid lead bismuth shielding pump 14 and a second pressure sensor 11-2 are sequentially arranged on a loop pipeline of the first branch. The second branch of the first liquid lead bismuth valve 2-1 is passed through, and the loop pipeline of the second branch is connected with the sample cavity; the loop pipeline of the second branch is sequentially provided with a heater 7, an electromagnetic flowmeter 8, a third liquid lead bismuth valve 2-3, a liquid lead bismuth flow scale tank 9, a heat exchanger 10, a fourth liquid lead bismuth valve 2-4 and a first pressure sensor 11-1. The loop pipeline of the first branch and the second branch connected with the sample cavity is in a V-shaped structure. And a loop pipeline of the third branch is connected with the liquid lead bismuth storage tank 3 through the fifth liquid lead bismuth valve 2-5 through the third branch of the first liquid lead bismuth valve 2-1. The outer wall of the liquid lead bismuth flow scale tank 9 in the second branch is also provided with: the heater, the heat preservation layer, the temperature measuring probe 9-3 and the vacuum cover plate; the vacuum cover plate of the liquid lead bismuth flow scale tank is also provided with: the liquid level sensor 9-2, the vacuum pumping port 9-1, the Ar gas inlet 9-4 and the exhaust port 9-5. The liquid level sensor 9-2 is used for measuring the liquid level of the liquid lead bismuth flow scale tank. The vacuum extraction opening 9-1 is connected with the liquid lead bismuth loop vacuum system 4. The Ar gas inlet 9-4 is connected with the gas outlet 9-5, and the Ar gas system 5 is arranged between the Ar gas inlet 9-4 and the gas outlet 9-5; the exhaust port 9-5 is connected with a barometer 9-6.
The oxygen concentration control chamber 6 includes: ar/H 2 Mixed gas inlet 6-1, exhaust port 6-9, ar/H 2 6-4 parts of a gas mixing steel cylinder, 6-3 parts of a gas valve, 6-10 parts of a gas filter, 6-5 parts of an oxygen concentration detector, 6-6 parts of a liquid level meter and a temperature measuring probe6-7。Ar/H 2 The mixed gas inlet 6-1 is arranged at the outlet end of the liquid lead bismuth in the oxygen concentration control chamber 6. The exhaust port 6-9 is arranged at the inlet end of the liquid lead bismuth in the oxygen concentration control chamber. Ar/H 2 Mixed gas steel cylinder 6-4 and Ar/H 2 The mixed gas inlet 6-1 is connected through a gas path pipeline. The air valve 6-3 is arranged at Ar/H 2 Mixed gas inlets 6-1 and Ar/H 2 And 6-4 parts of a gas mixture steel cylinder. The gas filter 6-2 is arranged at Ar/H 2 The mixed gas inlet 6-1 and the gas valve 6-3; the gas filter 6-10 is arranged on a gas path pipeline connected with the gas outlet 6-9. Oxygen concentration detectors 6-5 are respectively arranged at two ends of the cavity of the oxygen concentration control chamber 6. The liquid level gauge 6-6 is arranged on the cavity of the oxygen concentration control chamber 6. The temperature measuring probe 6-7 is arranged on the cavity of the oxygen concentration control chamber 6.
The liquid lead bismuth loop vacuum system 4 comprises: a vacuum pump 4-1, a first vacuum valve 4-2, a first vacuum gauge 4-5, a second vacuum valve 4-3 and a second vacuum gauge 4-4. The vacuum pump 4-1 is connected with a vacuum pipeline; the vacuum line is divided into two vacuum line branches. A first vacuum valve 4-2 and a first vacuum gauge 4-5 are sequentially arranged on a vacuum pipeline branch, and the first vacuum gauge 4-5 is connected with a vacuum extraction opening 9-1 of a liquid lead bismuth flow scale tank 9. The other vacuum pipeline branch is sequentially provided with a second vacuum valve 4-3 and a second vacuum gauge 4-4, and the second vacuum gauge 4-4 is connected with an extraction opening 1-1 of the liquid lead bismuth melting tank 1.
The Ar gas system 5 includes: ar gas cylinder 5-1, first Ar gas valve 5-2, second Ar gas valve 5-3, ar gas filter 5-4, third Ar gas valve 5-5 and fourth Ar gas valve 5-6.Ar gas cylinder 5-1 is connected with the gas pipeline. The first Ar gas valve 5-2 and the second Ar gas valve 5-3 are sequentially arranged on a gas pipeline connected with the Ar gas steel cylinder 5-1. The Ar gas filter 5-4 is arranged on a gas pipeline passing through the second Ar gas valve 5-3; the gas pipeline passing through the Ar gas filter 5-4 is divided into two branches; a gas branch is connected with an Ar gas inlet 9-4 on the liquid lead bismuth flow scale tank 9; the other gas branch is connected with an Ar gas charging valve 1-4 on the liquid lead bismuth melting tank 1. The third Ar gas valve 5-5 is arranged on a gas branch connected with the Ar gas charging valve 1-4 and the gas outlet 1-5 of the liquid lead bismuth melting tank 1 through Ar gas filters 5-4 respectively. The fourth Ar gas valve 5-6 is arranged on a gas branch connected with an Ar gas inlet 9-4 of the liquid lead bismuth flow scale tank 9 through an Ar gas filter 5-4.
The outside of the vacuum line 24 in the ion beam transport system further comprises: the device comprises an electromagnetic scanning device 26, a quick response valve 25, a vacuum pump 23, a cooling water jacket 19, a liquid lead bismuth leakage tank 18 and a liquid lead bismuth detector 15. The vacuum tube 24 in the ion beam transmission system is provided with: a semi-intercepted beam detector 21, a first beam spot detector 20, an intercepted beam detector 17, and a second beam spot detector 16. An electromagnetic scanning device 26 in the X-direction and the Y-direction is provided at one end of the vacuum pipe 24. The semi-intercept beam detector 21 is disposed within the vacuum conduit 24 adjacent to the electromagnetic scanning device 26. The first beam spot detector 20 is disposed within the vacuum conduit 24 adjacent to the semi-intercepted beam detector 21. The intercepting beam detector 17 is arranged in the vacuum duct 24 adjacent to the first beam spot detector 20. The second beam spot detector 16 is disposed within the vacuum conduit 24 adjacent to the intercepted beam detector 17.
The present disclosure also includes an emergency safety system, which is divided into: the system comprises a first path protection system and a second path protection system. A first way protection system for an emergency security system, comprising: a liquid lead bismuth detector 15, a liquid lead bismuth shield pump 14 and a quick response valve 25. The liquid lead bismuth detector 15 gives an alarm of liquid lead bismuth leakage, and the quick response valve 25 is automatically closed, and the operation of the liquid lead bismuth shield pump 14 is stopped. A second path protection system for an emergency safety system, comprising: a vacuum gauge 22, a liquid lead bismuth shield pump 14 and a quick response valve 25. The vacuum gauge 22 sets a vacuum warning threshold, and when the vacuum of the ion beam transmission system is lower than the threshold, the quick response valve 25 is automatically closed, and the operation of the liquid lead bismuth shielding pump 14 is stopped.
In another exemplary embodiment of the present disclosure, there is also provided an oxygen-controlled liquid lead bismuth corrosion and ion irradiation collaborative research experiment method, including the steps of a: before the experimental device is started, firstly, placing a metal cast ingot into a liquid lead bismuth melting tank, fastening a vacuum cover plate of the liquid lead bismuth melting tank, starting a vacuum pump of a liquid lead bismuth loop system, opening a first vacuum air valve and a second vacuum air valve of the vacuum system, and when the vacuum degree of the system reachesThe second vacuum valve is closed when the threshold is set, and then high-purity Ar gas higher than one atmosphere is filled. Step b: and (3) starting a liquid lead bismuth melting tank heater and a liquid lead bismuth loop heat exchanger power supply, when the metal in the liquid lead bismuth melting cavity is completely melted, opening a first Ar gas valve, a second Ar gas valve, a third Ar gas valve and an Ar gas charging valve on the liquid lead bismuth melting tank, pressurizing the liquid lead bismuth melting cavity by an Ar gas steel bottle, sequentially opening the first liquid lead bismuth valve to a fourth liquid lead bismuth valve, simultaneously closing a vacuum system second vacuum gas valve to slowly charge the liquid lead bismuth into a circulation loop, and closing the first liquid lead bismuth valve when the liquid lead bismuth is charged to 1/2-2/3 of the volume of an oxygen concentration control chamber according to the liquid level information fed back by an oxygen concentration reaction chamber liquid level sensor, and stopping charging the liquid lead bismuth. Step c: and starting a liquid lead bismuth shielding pump, and starting the circulating flow of the liquid lead bismuth under the driving of the liquid lead bismuth shielding pump. Opening oxygen concentration control Chamber Ar/H 2 Mixed gas inlet and Ar/H 2 Valve of mixed gas outlet from Ar/H 2 One end of the mixed gas inlet is continuously introduced with Ar/H with a certain flow velocity 2 (H 2 The content is lower than 10 percent) and the oxygen concentration in the liquid lead bismuth is controlled to a preset target by combining an oxygen concentration detector arranged in front of the oxygen concentration reaction chamber and an oxygen concentration detector arranged behind the oxygen concentration reaction chamber. Step d: and starting a vacuum pump of the ion beam current transmission system, starting an electromagnetic scanning system when the system vacuum reaches a set value, and observing the size and uniformity of the ion beam spots in real time through an ion beam spot detector, so as to continuously adjust parameters of the electromagnetic scanning system and ensure that the uniformity of the beam current irradiated on a sample is more than 95%. Step e: combining the semi-interception type beam detector and the interception type beam detector to finish the calibration work of the ion beam intensity; before the irradiation experiment starts, the interception type beam detector and the beam spot detector are ensured not to block beam transmission, and the ion irradiation and corrosion synergistic effect experiment under the condition of a certain oxygen concentration can be performed by opening the front end beam transport system. Wherein, the operating temperature range of the liquid lead bismuth loop is 200 ℃ to 600 ℃, and the temperature of the sample chamber is controlled within 300 ℃ to 550 ℃; the flow rate range of the liquid lead bismuth in the liquid lead bismuth loop is 0-3m/s, and the oxygen concentration control range of the liquid lead bismuth is as follows: 10 -4 -10 -10 wt％。
Thus, embodiments of the present disclosure have been described in detail with reference to the accompanying drawings. It should be noted that, in the drawings or the text of the specification, implementations not shown or described are all forms known to those of ordinary skill in the art, and not described in detail. Furthermore, the above definitions of the elements and methods are not limited to the specific structures, shapes or modes mentioned in the embodiments, and may be simply modified or replaced by those of ordinary skill in the art.
From the foregoing description, those skilled in the art should clearly recognize that the present disclosure is directed to a device and method for collaborative research of oxygen-controlled liquid lead bismuth corrosion and ion irradiation.
In summary, the present disclosure provides a research experiment capable of combining liquid lead bismuth corrosion and ion radiography under different oxygen concentrations, which is beneficial to the research of liquid lead bismuth corrosion materials and metal fluid fluidity under different oxygen concentrations.
It should be further noted that, the directional terms mentioned in the embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., are only referring to the directions of the drawings, and are not intended to limit the scope of the present disclosure. Like elements are denoted by like or similar reference numerals throughout the drawings. Conventional structures or constructions will be omitted when they may cause confusion in understanding the present disclosure.
And the shapes and dimensions of the various elements in the drawings do not reflect actual sizes and proportions, but merely illustrate the contents of the embodiments of the present disclosure. In addition, in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.
Unless otherwise known, numerical parameters in this specification and the appended claims are approximations that may vary depending upon the desired properties sought to be obtained by the present disclosure. In particular, all numbers expressing quantities of ingredients, reaction conditions, and so forth used in the specification and claims are to be understood as being modified in all instances by the term "about". In general, the meaning of expression is meant to include a variation of + -10% in some embodiments, a variation of + -5% in some embodiments, a variation of + -1% in some embodiments, and a variation of + -0.5% in some embodiments by a particular amount.
Furthermore, the word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.
The use of ordinal numbers such as "first," "second," "third," etc., in the description and the claims to modify a corresponding element does not by itself connote any ordinal number of elements or the order of manufacturing or use of the ordinal numbers in a particular claim, merely for enabling an element having a particular name to be clearly distinguished from another element having the same name.
Furthermore, unless specifically described or steps must occur in sequence, the order of the above steps is not limited to the list above and may be changed or rearranged according to the desired design. In addition, the above embodiments may be mixed with each other or other embodiments based on design and reliability, i.e. the technical features of the different embodiments may be freely combined to form more embodiments.
Similarly, it should be appreciated that in the above description of exemplary embodiments of the disclosure, various features of the disclosure are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various disclosed aspects. However, the disclosed method should not be construed as reflecting the intention that: i.e., the claimed disclosure requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this disclosure.
While the foregoing embodiments have been described in some detail for purposes of clarity of understanding, it will be understood that the foregoing embodiments are merely illustrative of the invention and are not intended to limit the invention, and that any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the present disclosure are intended to be included within the scope of the present disclosure.
Claims (8)
1. An oxygen-controlled liquid lead bismuth corrosion and ion irradiation collaborative research experiment device, comprising: the system comprises a liquid lead bismuth loop system, an ion beam transmission system, a sample cavity and an emergency safety system;
the liquid lead bismuth loop system comprises: the liquid lead bismuth melting tank, the liquid lead bismuth storage tank, the oxygen concentration control chamber, the liquid lead bismuth shielding pump, the electromagnetic flowmeter, the liquid lead bismuth flow scale tank, the heat exchanger, the liquid lead bismuth valve component, the pressure sensor component, the temperature measuring probe, the Ar gas system and the vacuum system;
the ion beam transport system includes: electromagnetic scanning equipment, a vacuum pipeline, a vacuum pump, a beam detector, an ion beam spot detector, a quick corresponding valve, a liquid lead bismuth leakage tank and a liquid lead bismuth detector;
the sample chamber comprises: experimental sample and temperature measuring probe;
the liquid lead bismuth loop system and the ion transmission system are connected into a whole through the sample cavity;
wherein, liquid plumbous bismuth valve subassembly includes: the first liquid lead bismuth valve, the second liquid lead bismuth valve, the third liquid lead bismuth valve, the fourth liquid lead bismuth valve and the fifth liquid lead bismuth valve; the pressure sensor assembly includes: a first pressure sensor and a second pressure sensor; the liquid lead bismuth melting tank is connected with the first liquid lead bismuth valve through a loop pipeline and is divided into three branches through the loop pipeline of the first liquid lead bismuth valve;
the first branch is connected with the sample cavity through an oxygen concentration control chamber, a second liquid lead bismuth valve, a liquid lead bismuth pump and a second pressure sensor which are sequentially arranged on the loop pipeline;
the second branch is connected with the sample cavity through a heater, an electromagnetic flowmeter and a third liquid lead bismuth valve which are sequentially arranged on the loop pipeline, and the heat exchanger, a fourth liquid lead bismuth valve and the first pressure sensor; a liquid lead bismuth flow scale tank is arranged between the third liquid lead bismuth valve and the heat exchanger;
the third branch is connected with the liquid lead bismuth storage tank through a fifth liquid lead bismuth valve;
the first branch, the second branch and the sample cavity form a closed liquid lead bismuth loop;
the loop pipeline flowing into the sample cavity and the loop pipeline flowing out of the sample cavity in the liquid lead bismuth loop system are symmetrical V-shaped pipelines; the first pressure sensor is arranged at the inflow section of the V-shaped pipeline; the second pressure sensor is arranged at the outflow section of the V-shaped pipeline;
wherein, the outside of the oxygen concentration control chamber cavity is provided with a heater and a heat preservation layer; ar/H is arranged at the outlet end of the liquid lead bismuth in the oxygen concentration control chamber 2 The mixed gas inlet is provided with an exhaust port at the inlet end of the liquid lead bismuth; the Ar/H ratio is 2 The mixed gas inlet is connected with Ar/H through a gas path pipeline 2 The mixed gas steel cylinders are connected with each other, and are arranged at the Ar/H part 2 Gas cylinder and Ar/H 2 An air valve and an air filter are also arranged on the air path pipeline between the mixed gas inlets; oxygen concentration detectors are respectively arranged at the front end and the rear end of the cavity of the oxygen concentration control chamber; the cavity of the oxygen concentration control chamber is also provided with a liquid level detector, a temperature measuring probe and a barometer.
2. The oxygen-controlled liquid lead bismuth corrosion and ion irradiation collaborative research experiment device according to claim 1, wherein,
the vacuum system includes: vacuum pump, vacuum gauge and vacuum air valve; the vacuum pump is divided into two vacuum branches through a vacuum pipeline; the first vacuum branch is connected with a liquid lead bismuth flow scale tank through a first vacuum valve and a vacuum gauge which are sequentially arranged on the vacuum pipeline; the second vacuum branch is connected with the liquid lead bismuth melting tank through a second vacuum valve and a vacuum gauge which are sequentially arranged on the vacuum sensor;
the Ar gas system includes: ar gas cylinder, ar gas valve, ar gas filter and pressure gauge; the Ar gas cylinder is sequentially connected with a first Ar gas valve, a second Ar gas valve and an Ar gas filter through a gas circuit pipeline; an Ar gas pipeline passing through the Ar gas filter is divided into two branches; the first Ar gas branch is connected with a liquid lead bismuth flow scale tank through a third Ar gas valve in sequence; the second Ar gas branch is connected with the liquid lead bismuth melting tank through a fourth Ar gas valve.
3. The oxygen-controlled liquid lead bismuth corrosion and ion irradiation collaborative research experiment device according to claim 1, wherein,
a liquid lead bismuth outlet pipeline is arranged in the liquid lead bismuth melting tank and clung to the inner wall, and penetrates out from the side surface above the tank body and is connected with a liquid lead bismuth loop through a first liquid lead bismuth valve; the outer wall of the melting tank is provided with a heater, an insulating layer and a temperature measuring probe; a vacuum cover plate is arranged on the melting tank, and a liquid level meter, an extraction opening, an Ar gas charging opening and a temperature measuring probe are arranged on the cover plate; the temperature measuring probe can be lifted and adjusted; the extraction opening is connected with the vacuum system; the Ar gas charging port is connected with the Ar gas system;
a vacuum cover plate is arranged on the liquid lead bismuth flow scale tank; the bottom of the liquid lead bismuth flow scale tank is connected with a liquid lead bismuth loop pipeline; the outer wall of the liquid lead bismuth flow scale tank is provided with a heater, a heat preservation layer and a temperature measuring probe; a liquid level sensor, a vacuum extraction opening, an Ar gas charging valve and a temperature measuring probe are arranged on the vacuum cover plate of the liquid lead bismuth flow scale tank; the temperature measuring probe can be lifted and adjusted; the vacuum extraction opening is connected with the vacuum system; the Ar gas charging valve is connected with the Ar gas system.
4. The oxygen-controlled liquid lead bismuth corrosion and ion irradiation collaborative research experiment device according to claim 1, wherein,
one side of the experimental sample is arranged in a vacuum pipeline of the ion beam transmission system and is opposite to the ion irradiation direction, and the other side of the experimental sample is arranged in a liquid lead bismuth loop and is contacted with liquid lead bismuth; and the temperature measuring probe stretches into the liquid lead bismuth and is contacted with the surface of the experimental sample.
5. The oxygen-controlled liquid lead bismuth corrosion and ion irradiation collaborative research experiment device according to claim 1, wherein,
electromagnetic scanning equipment in X and Y directions is arranged at the front end of the vacuum pipeline of the ion beam transmission system; the vacuum pipeline is internally provided with a quick response valve, a vacuum pump, a vacuum gauge, a semi-interception type beam detector, a first beam spot detector, a cooling water jacket, an interception type beam spot detector, a second beam spot detector and a liquid lead bismuth detector in sequence;
the semi-interception type beam detector, the first beam spot detector and the second beam spot detector are vertically lifted through pneumatic control.
6. The oxygen-controlled liquid lead bismuth corrosion and ion irradiation collaborative research experiment device according to claim 1, wherein the emergency safety system is provided with two parallel protection systems;
the first way protection system comprises: a liquid lead bismuth detector, a liquid lead bismuth shielding pump and a quick response valve; the liquid lead bismuth detector sends out a liquid lead bismuth leakage alarm, the quick response valve can be automatically closed, and meanwhile, the operation of a shielding pump of the liquid lead bismuth loop system is stopped;
the second path protection system includes: a vacuum gauge, a liquid lead bismuth shielding pump and a quick response valve; the vacuum gauge is provided with a vacuum degree alarm threshold, the vacuum degree of the ion beam transmission system is lower than the threshold, the quick response valve is closed, and meanwhile, the operation of the liquid lead bismuth shielding pump of the liquid lead bismuth loop system is stopped.
7. An oxygen-controlled liquid lead bismuth corrosion and ion irradiation collaborative research experiment method using the oxygen-controlled liquid lead bismuth corrosion and ion irradiation collaborative research experiment device according to any one of claims 1 to 6, comprising:
step a: before the experimental device is started, firstly placing a metal cast ingot into a liquid lead bismuth melting tank, fastening a vacuum cover plate of the liquid lead bismuth melting tank, starting a vacuum pump of a liquid lead bismuth loop system, opening a first vacuum air valve and a second vacuum air valve of the vacuum system, closing the second vacuum air valve when the vacuum degree of the liquid lead bismuth loop system reaches a set threshold value, and then filling high-purity Ar gas with the pressure higher than one atmosphere;
step b: the method comprises the steps of starting a liquid lead bismuth melting tank heater and a liquid lead bismuth loop heat exchanger power supply, when metal in a liquid lead bismuth melting cavity is completely melted, opening a first Ar gas valve, a second Ar gas valve, a third Ar gas valve and an Ar gas charging valve on the liquid lead bismuth melting tank, pressurizing the liquid lead bismuth melting cavity by an Ar gas steel bottle, sequentially opening the first liquid lead bismuth valve to a fourth liquid lead bismuth valve, simultaneously closing a vacuum system second vacuum gas valve to slowly charge the liquid lead bismuth into a circulation loop, and closing the first liquid lead bismuth valve when the liquid lead bismuth is charged to 1/2-2/3 of the volume of an oxygen concentration control chamber according to liquid level information fed back by an oxygen concentration reaction chamber liquid level sensor;
step c: starting a liquid lead bismuth shielding pump, and starting circulating flow of the liquid lead bismuth under the driving of the liquid lead bismuth shielding pump; opening oxygen concentration control Chamber Ar/H 2 Mixed gas inlet and Ar/H 2 Valve of mixed gas outlet from Ar/H 2 One end of the mixed gas inlet is continuously introduced with Ar/H with a certain flow velocity 2 The mixed gas is combined with an oxygen concentration detector arranged in front of the oxygen concentration reaction chamber and an oxygen concentration detector arranged behind the oxygen concentration reaction chamber to control the oxygen concentration in the liquid lead bismuth to a preset target;
step d: starting a vacuum pump of the ion beam current transmission system, starting an electromagnetic scanning system when the vacuum of the liquid lead bismuth loop system reaches a set value, and observing the size and uniformity of an ion beam spot in real time through an ion beam spot detector, so as to continuously adjust parameters of the electromagnetic scanning system and ensure that the uniformity of the beam current irradiated on a sample is more than 95%;
step e: combining the semi-interception type beam detector and the interception type beam detector to finish the calibration work of the ion beam intensity; before the irradiation experiment starts, the interception type beam detector and the beam spot detector are ensured not to block beam transmission, and the ion irradiation and corrosion synergistic effect experiment under the condition of a certain oxygen concentration can be performed by opening the front end beam transport system.
8. The experimental method for collaborative research on oxygen-controlled liquid lead bismuth corrosion and ion irradiation according to claim 7, wherein the operating temperature of the liquid lead bismuth loop is 200-600 ℃, and the temperature of the sample chamber is controlled within 300-550 ℃; the flow rate range of the liquid lead bismuth in the liquid lead bismuth loop is 0-3m/s, and the oxygen concentration control range of the liquid lead bismuth is as follows: 10 -4 -10 -10 wt％。
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| CN113031053A (en) * | 2021-01-05 | 2021-06-25 | 中国原子能科学研究院 | Experimental device and experimental system for neutron beam irradiation experiment |
| CN113486482B (en) * | 2021-07-12 | 2022-10-28 | 西安交通大学 | Liquid lead bismuth sweepforward spiral tube bundle speed and temperature boundary layer calculation method |
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