CN111007888A - Dissolved oxygen control system in liquid metal coolant - Google Patents
Dissolved oxygen control system in liquid metal coolant Download PDFInfo
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- CN111007888A CN111007888A CN201911390760.7A CN201911390760A CN111007888A CN 111007888 A CN111007888 A CN 111007888A CN 201911390760 A CN201911390760 A CN 201911390760A CN 111007888 A CN111007888 A CN 111007888A
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- oxygen
- liquid metal
- metal coolant
- injector
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D11/00—Control of flow ratio
- G05D11/02—Controlling ratio of two or more flows of fluid or fluent material
- G05D11/13—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means
- G05D11/131—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring the values related to the quantity of the individual components
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/28—Selection of specific coolants ; Additions to the reactor coolants, e.g. against moderator corrosion
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The invention provides a system for controlling dissolved oxygen in liquid metal coolant, comprising: the device comprises a container filled with liquid metal coolant, an oxygen injector arranged on the container and used for injecting oxygen into the liquid metal coolant, and an oxygen injection controller which is in communication connection with the oxygen injector and used for controlling the oxygen injector; an oxygen sensor mounted on the vessel for detecting the amount of oxygen in the liquid metal coolant, a working electrode mounted on the vessel; the oxygen sensor is in communication connection with the oxygen injection controller; the oxygen injector comprises a zirconia ceramic probe, and a catalyst for dissociating oxygen molecules into oxygen ions is arranged in the zirconia ceramic probe. Oxygen molecules in the air are dissociated into oxygen ions by adopting a catalyst, the oxygen ions are injected into the liquid metal coolant under the action of an external potential, and the flux of the injected oxygen ions is determined by the external potential and the activation area of the oxygen injection device probe, so that the oxygen injection rate can be better controlled, and the excellent oxygen control effect is realized.
Description
Technical Field
The invention relates to the technical field of nuclear reactor coolant, in particular to a system for controlling dissolved oxygen in liquid metal coolant.
Background
Liquid metal such as lead and lead bismuth eutectic alloy or sodium-cooled fast neutron reactor can carry out nuclear fuel proliferation, reduce the generation of nuclear waste, and realize the closed circulation of nuclear fuel, thereby greatly improving the utilization rate of uranium resources, and being a new generation nuclear reactor technology which is mainly researched. Among them, the liquid lead or lead bismuth alloy cooling fast neutron reactor has excellent intrinsic nuclear safety performance besides the advantages, and has gained wide attention in recent years. However, liquid lead or lead bismuth coolants and structural materials such as ferrite/martensite steel and austenitic stainless steel have the problem of liquid metal corrosion. Liquid metal corrosion is dependent on dissolved oxygen content. When the oxygen content is too high, the steel surface is oxidized to form an excessively thick oxide film. For nuclear fuel cladding, an excessively thick oxide film may impede the heat transfer of the nuclear fuel pellets to the coolant outside the cladding. Too high an oxygen content also causes the lead to be oxidized to form poorly flowing lead oxide, resulting in plugging of the core cooling channels. If the dissolved oxygen is too low, a compact and continuous protective oxide film cannot be generated on the steel surface, so that the steel matrix is directly exposed to a liquid metal environment, element selective dissolution corrosion (such as nickel) occurs, and dissolved corrosion products are separated out at the cold end of a reactor, so that not only is high-radioactivity dirt formed, but also the flow channel is blocked. Therefore, it is necessary to control the dissolved oxygen in the liquid metal to a reasonable range.
At present, the main oxygen control modes include gas-phase oxygen control and solid-phase oxygen control. The basic principle of gas-phase oxygen control is to automatically control the flow of oxidizing gas and reducing gas introduced into liquid metal by using a PID control method to realize the purpose of oxygen control. When the oxygen content is higher, reducing gas is introduced, and when the oxygen content is lower, oxidizing gas is introduced. The oxidizing gas can be Ar + O in a certain proportion2Or Ar + H2The oxygen supply sensitivity is determined by the gas mixture such as O, the gas mixture ratio, the volume of the liquid metal, and the like. The reducing gas can adopt pure hydrogen or a certain proportion of Ar + H2And the like. The method is successfully applied to a plurality of liquid metal experimental loops and devices at home and abroad. The principle of solid oxygen control is that a plurality of lead oxide pellets are arranged on a bypass of a main loop, and the decomposition rate of the lead oxide pellets is controlled by regulating the flow rate and temperature of lead and bismuth flowing through the lead oxide pellet area, so that the content of dissolved oxygen in the main loop is automatically controlled. The method is applied to Russian liquid lead bismuth nuclear reactors in engineering. However, the two oxygen control methods cannot finely control dissolved oxygen.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
In view of the above-mentioned shortcomings in the prior art, an object of the present invention is to provide a system for controlling dissolved oxygen in a liquid metal coolant, which aims to solve the problem in the prior art that it is difficult to achieve fine control of dissolved oxygen when controlling oxygen in a liquid metal coolant.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a system for controlling dissolved oxygen in a liquid metal coolant, comprising: the device comprises a container filled with liquid metal coolant, an oxygen injector arranged on the container and used for injecting oxygen into the liquid metal coolant, and an oxygen injection controller which is in communication connection with the oxygen injector and used for controlling the oxygen injector; an oxygen sensor mounted on the vessel for detecting the amount of oxygen in the liquid metal coolant, and a working electrode mounted on the vessel; the oxygen sensor is in communication connection with the oxygen injection controller; the oxygen injector comprises a zirconia ceramic probe, and a catalyst for dissociating oxygen molecules into oxygen ions is arranged in the zirconia ceramic probe.
Optionally, liquid metal coolant in dissolved oxygen control system, wherein, still include reducing gas supply unit and deoxidization controller, reducing gas supply unit pass through the pipeline with the container links to each other, be provided with the analog quantity pneumatic valve on the pipeline, the deoxidization controller respectively with the analog quantity pneumatic valve and oxygen sensor communication connection.
Optionally, the system for controlling dissolved oxygen in a liquid metal coolant, wherein the zirconia ceramic is 5 mol% or 8 mol% yttria-stabilized zirconia solid electrolyte ceramic.
Optionally, the system for controlling dissolved oxygen in the liquid metal coolant, wherein the catalyst is one or more of nano platinum powder, lanthanum strontium cobaltate, lanthanum strontium ferrite, lanthanum strontium manganate, and lanthanum strontium cobaltate iron.
Optionally, the system for controlling dissolved oxygen in liquid metal coolant, wherein the oxygen injection controller comprises a voltmeter and a PID module, the voltmeter is communicatively connected with the oxygen sensor, and the PID module is communicatively connected with the oxygen injector.
Optionally, the system for controlling dissolved oxygen in liquid metal coolant, wherein the oxygen removal controller comprises a voltmeter and a PID module, the voltmeter is in communication connection with the oxygen sensor, and the PID module is in communication connection with the analog quantity gas valve.
Optionally, the system for controlling dissolved oxygen in liquid metal coolant, wherein the oxygen sensor is an air reference electrode or a metal reference electrode.
Optionally, the system for controlling dissolved oxygen in liquid metal coolant, wherein the oxygen removal controller further comprises a voltage manual adjustment knob, and the voltage manual adjustment knob is used for manually adjusting the upper limit of the output of the PID module.
Optionally, the system for controlling dissolved oxygen in liquid metal coolant, wherein a heating wire is wound on an outer side wall of the container.
Optionally, the system for controlling dissolved oxygen in liquid metal coolant further comprises a terminal for recording and displaying the voltage value collected by the voltmeter.
Has the advantages that: the invention provides a system for controlling dissolved oxygen in liquid metal coolant, which comprises: the device comprises a container filled with liquid metal coolant, an oxygen injector arranged on the container and used for injecting oxygen into the liquid metal coolant, and an oxygen injection controller which is in communication connection with the oxygen injector and used for controlling the oxygen injector; an oxygen sensor mounted on the vessel for detecting the amount of oxygen in the liquid metal coolant, and a working electrode mounted on the vessel; the oxygen sensor is in communication connection with the oxygen injection controller; the oxygen injector comprises a zirconia ceramic probe, and a catalyst for dissociating oxygen molecules into oxygen ions is arranged in the zirconia ceramic probe. Oxygen molecules in the air are dissociated into oxygen ions by adopting a catalyst, the potential on the oxygen injection probe is regulated and controlled by the oxygen injection controller, so that the oxygen ions are injected into the liquid metal coolant, the oxygen injection rate can be better controlled because the flux of the injected oxygen ions is determined by controlling the potential and the activation area of the oxygen injection probe, and the oxygen injection rate can be carried out in a small range when the activation area is small, thereby being beneficial to controlling the oxygen concentration at an extremely low level.
Drawings
Fig. 1 is a schematic diagram of a system for controlling dissolved oxygen in a liquid metal coolant according to an embodiment of the present invention.
FIG. 2 is a block diagram of an oxygen injector provided in an embodiment of the present invention.
Fig. 3 is a test chart of the experimental results of the first embodiment of the present invention.
The numbering in the figures illustrates:
1-container, 2-heating wire, 3-liquid metal coolant, 4-flanged container cover, 5-oxygen sensor, 6(7) -oxygen injector, 8-working electrode, 9-gas cylinder, 10-stainless steel gas pipe, 11-analog quantity gas valve, 12-gas outlet, 13-oxygen injection controller, 14-high internal resistance voltmeter, 15-voltage display meter, 16-voltage manual adjusting knob, 17-PID module, 18-computer and data collector; 19-an oxygen removal controller, 20-a manual voltage adjusting knob, 21-a high internal resistance voltmeter, 22-a voltage display meter and 23-a PID module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" as used herein includes both direct and indirect connections (couplings), unless otherwise specified. In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1, a system for controlling dissolved oxygen in a liquid metal coolant, comprising: the cooling device comprises a container 1 containing liquid metal coolant, an oxygen injector 6(7) arranged on the container 1 and used for injecting oxygen into the liquid metal coolant 3, and an oxygen injection controller 13 which is in communication connection with the oxygen injector 6(7) and used for controlling the oxygen injector; an oxygen sensor 5 mounted on the vessel 1 for detecting the amount of oxygen in the liquid metal coolant, and a working electrode 8 mounted on the vessel 1; the oxygen sensor 5 is in communication connection with the oxygen injection controller 13; the oxygen injectors 6(7) include zirconia ceramic probes, and catalysts for dissociating oxygen molecules into oxygen ions are disposed in the zirconia ceramic probes.
In the present embodiment, a flange cover 4 is attached to the container 1, and oxygen injectors 6 and 7, an oxygen sensor 5, an exhaust hole 12, and an electrode 8 are attached to the flange cover 4. The oxygen injection controller 13 regulates and controls the voltage output on the oxygen injectors 6 and 7, so that oxygen ions catalyzed in the zirconia ceramic probe are forced to move from the liquid metal coolant at the inner side of the zirconia ceramic probe to the outer side, and the purpose of injecting oxygen into the liquid metal coolant is achieved. Since the flux of injected oxygen ions is determined by the control potential and the activation area of the oxygen injector probe, the oxygen injection rate can be better controlled, and when the activation area is small, the oxygen injection rate can be performed within a small range, which is advantageous in controlling the oxygen concentration at an extremely low level.
In some embodiments, as shown in fig. 2, the oxygen injector 6(7) consists of YSZ tubing 61 and stainless steel seal 62. The bottom of the YSZ tube is the probe inserted into the liquid metal 3. The upper end of the oxygen injector 6(7) is provided with two small holes 63 to ensure that air can enter the interior of the probe. If applied to a nuclear reactor, the two small holes would need to be connected to an air reservoir outside the nuclear island with sealed conduits. The catalyst in the probe at the lower end of the oxygen injector 6(7) adopts one of nano platinum powder (Pt), strontium lanthanum cobaltate (LSC), strontium lanthanum ferrite (LSF), strontium lanthanum manganate (LSM) and strontium lanthanum iron cobaltate (LSCF) or a mixture of any mixture of the nano platinum powder (Pt), the strontium lanthanum cobaltate (LSC), the strontium lanthanum ferrite (LSF) and the strontium lanthanum iron cobaltate (LSCF). The purpose of the catalyst is to dissociate oxygen molecules in the air into oxygen ions.
Optionally, the zirconia ceramic is 5 mol% or 8 mol% yttria-stabilized zirconia solid electrolyte ceramic (abbreviated as YSZ).
Optionally, a heating wire 2 is further wound on the outer surface of the container, and the container can be heated by electric heating.
In some embodiments, the system for controlling dissolved oxygen in liquid metal coolant further comprises a reducing gas supply device 9 and an oxygen removal controller 19, wherein the reducing gas supply device 9 is connected with the container 1 through a pipeline 10, an analog quantity gas valve 11 is arranged on the pipeline 10, and the oxygen removal controller 13 is in communication connection with the analog quantity gas valve 11 and the oxygen sensor 5 respectively.
Specifically, the reducing gas supply device 9 is a gas cylinder. The gas in cylinder 9 may be a reducing gas Ar + 5% H2Or pure hydrogen, but for safety, Ar + 5% H is generally used2. The gas in the gas cylinder 9 is introduced into the liquid metal 3 through a stainless steel gas pipe 10 in order to reduce the dissolved oxygen content in the liquid metal 3. An analog quantity air valve 11 is also arranged on the stainless steel air pipe 10. The amount of reducing gas entering the liquid metal is controlled by regulating and controlling the flow of the analog quantity gas valve, thereby achieving the purpose of controlling and removing the solution in the liquid metal 3The oxygen decomposition speed. The residual air is discharged from the exhaust port 12.
In some embodiments, the oxygen injection controller 13 comprises a high internal resistance voltmeter 14, a voltage display meter 15, and a PID module 17, wherein the high internal resistance voltmeter 14 is communicatively connected to the oxygen sensor 5, and the PID module 17 is communicatively connected to the oxygen injector 6 (7).
In one embodiment, the system for controlling dissolved oxygen in liquid metal coolant further comprises a terminal for recording and displaying the voltage value collected by the voltmeter. The terminal may be a computer 18. The regulation and control result can be conveniently and visually displayed by arranging a computer in the system.
Specifically, the voltage signal of the oxygen sensor 5 is collected by the high internal resistance voltmeter 14 of the oxygen injection controller 13, and the high internal resistance voltmeter 14 transmits the collected voltage to the PID module 17 as a standard signal. And simultaneously transmits the acquired voltage to a data acquisition unit in the computer 18 for data storage and display. The PID module 17 automatically controls the voltage output on the oxygen injector 6(7) according to the target oxygen control potential, and forces the catalyzed oxygen ions in the probe to move from the liquid metal 3 inside the YSZ probe to the outside, thereby achieving the purpose of injecting oxygen into the liquid metal 3. The voltage display table 15 on the oxygen injection controller 13 displays the output signal of the PID module 17 in real time. And at the same time, sends it to the data collector in the computer 18 for data storage and display.
Further, the oxygen injection controller also comprises a voltage manual adjusting knob 16 which can manually adjust the upper limit of the output of the PID module 17 to prevent the YSZ probe from being burnt.
In some embodiments, the oxygen removal controller 19 includes a high internal resistance voltmeter 21 and a PID module 23, the high internal resistance voltmeter 21 is communicatively connected to the oxygen sensor 5, and the PID module 23 is communicatively connected to the analog quantity gas valve 11.
Specifically, the voltage signal of the oxygen sensor 5 is collected by the high internal resistance voltmeter 21 on the oxygen removal controller 19, the high internal resistance voltmeter 21 transmits the collected signal to the standard signal and transmits the standard signal to the PID module 23, and the PID module 23 regulates and controls the flow of the analog quantity gas valve 11 according to the target oxygen control range, so as to control the speed of removing dissolved oxygen in the liquid metal 3. When the dissolved oxygen is below the target value, the oxygen removal controller 19 causes the analog quantity valve 11 to close, while the oxygen injection controller 13 operates, and vice versa. The automatic oxygen control purpose is achieved by matching the oxygen injection controller with the oxygen removal controller.
In this embodiment, the oxygen removal controller 19 is further provided with a voltage display meter 22 and a manual voltage adjustment knob 20. The voltage display table 22 can display the output voltage of the PID module 23 in real time, and the manual voltage adjusting knob 20 can set the upper limit of the output voltage of the PID module 23.
In some embodiments, the oxygen sensor 5 is an air reference electrode or a metal reference electrode.
Specifically, the oxygen sensor 5 may employ an air reference electrode or a metal/metal oxide reference electrode. When an air reference electrode is adopted, the structure of the oxygen sensor 5 is the same as that of the oxygen injectors 6 and 7; when a metal/metal oxide reference electrode is used, the upper end of the oxygen sensor 5 does not need to be opened, and the rest of the structure is the same as that of the oxygen injectors 6 (7). The low potential ends of the oxygen sensor 5 and the oxygen injectors 6 and 7 are connected to a working electrode 8 inserted into the liquid metal 3.
The above-described system provided by the present invention is further explained by the following embodiments.
The first embodiment is as follows:
one oxygen control device was fabricated according to the structure shown in fig. 1, the basic structure and the functions of the respective components having been described previously. The liquid metal 3 is lead bismuth eutectic alloy, the volume is 5L, and the temperature is 428 ℃. The gas in cylinder 9 was Ar + 5% H2. The oxygen sensor 5 adopts an air reference electrode, the catalysts of the oxygen injectors 6 and 7 adopt LSC, the YSZ tube adopts a 5 mol% YSZ tube, and the activation area of the tube probe is about 240mm2. The analog quantity air valve 11 is firstly opened, and the flow rate is kept constant at 1.2L/h. The dissolved oxygen content is continuously reduced under the action of reducing gas, the signal of the oxygen sensor 5 is continuously increased, and when the oxygen content corresponding to the signal is lower than the target oxygen content by 3.5x10- 11In wt%, the oxygen injection controller 13 is turned on, and a voltage value corresponding to the target oxygen content is set.
From FIG. 3The results show that the dissolved oxygen is at 4x10 under the automatic regulation of oxygen injection controller 13-11wt% and 3X10-11Slight fluctuations between wt%. After the controller is closed, the dissolved oxygen is seriously deviated from the target value, the dissolved oxygen approaches the target value after the controller is restarted, and then the dissolved oxygen slightly oscillates near the target value, so that a more stable oxygen control effect is achieved.
In summary, the present invention provides a system for controlling dissolved oxygen in liquid metal coolant, comprising: the device comprises a container filled with liquid metal coolant, an oxygen injector arranged on the container and used for injecting oxygen into the liquid metal coolant, and an oxygen injection controller which is in communication connection with the oxygen injector and used for controlling the oxygen injector; an oxygen sensor mounted on the vessel for detecting the amount of oxygen in the liquid metal coolant, and a working electrode mounted on the vessel; the oxygen sensor is in communication connection with the oxygen injection controller; the oxygen injector comprises a zirconia ceramic probe, and a catalyst for dissociating oxygen molecules into oxygen ions is arranged in the zirconia ceramic probe. Oxygen molecules in the air are dissociated into oxygen ions by adopting a catalyst, under the condition of a certain activation area, the flux of the oxygen ions depends on the magnitude of applied voltage, so that the aim of injecting oxygen into the liquid metal is fulfilled, and the reduction gas (Ar + H) introduced into the liquid metal is automatically controlled2Or pure hydrogen, etc.) to achieve the purpose of automatic oxygen control. Since the flux of injected oxygen ions is determined by the control potential and the activation area of the oxygen injector probe, the oxygen injection rate can be better controlled, and when the activation area is small, the oxygen injection rate can be performed within a small range, which is advantageous in controlling the oxygen concentration at an extremely low level. Similarly, by increasing the number of oxygen injector probes (i.e., increasing the activation area), the oxygen injection rate can be increased, and the oxygen concentration can be controlled to a higher level.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. A system for controlling dissolved oxygen in a liquid metal coolant, comprising: the device comprises a container filled with liquid metal coolant, an oxygen injector arranged on the container and used for injecting oxygen into the liquid metal coolant, and an oxygen injection controller which is in communication connection with the oxygen injector and used for controlling the oxygen injector; an oxygen sensor mounted on the vessel for detecting the amount of oxygen in the liquid metal coolant, and a working electrode mounted on the vessel; the oxygen sensor is in communication connection with the oxygen injection controller; the oxygen injector comprises a zirconia ceramic probe, and a catalyst for dissociating oxygen molecules into oxygen ions is arranged in the zirconia ceramic probe.
2. The system for controlling dissolved oxygen in liquid metal coolant according to claim 1, further comprising a reducing gas supply device and a deoxygenation controller, wherein the reducing gas supply device is connected with the container through a pipeline, an analog quantity gas valve is arranged on the pipeline, and the deoxygenation controller is in communication connection with the analog quantity gas valve and the oxygen sensor respectively.
3. A dissolved oxygen control system in a liquid metal coolant according to claim 1, wherein the zirconia ceramic is a 5 mol% or 8 mol% yttria stabilized zirconia solid electrolyte ceramic.
4. The system of claim 1, wherein the catalyst is one or more of nano platinum powder, strontium lanthanum cobaltate, strontium lanthanum ferrite, strontium lanthanum manganate, and strontium lanthanum iron cobaltate.
5. The system as defined in claim 1, wherein the oxygen injection controller comprises a voltmeter communicatively coupled to the oxygen sensor and a PID module communicatively coupled to the oxygen injector.
6. The system of claim 5, wherein the oxygen removal controller comprises a voltmeter communicatively coupled to the oxygen sensor and a PID module communicatively coupled to the analog quantity gas valve.
7. The system of claim 1, wherein the oxygen sensor is an air reference electrode or a metal reference electrode.
8. The system of claim 6, wherein the oxygen removal controller further comprises a voltage manual adjustment knob by which an upper output limit of the PID module is manually adjusted.
9. A system for controlling dissolved oxygen in a liquid metal coolant as claimed in any one of claims 1 to 8 wherein the vessel is wound with heating wires around the outside wall of the vessel.
10. The system as claimed in claim 8, further comprising a terminal for recording and displaying the voltage values collected by the voltmeter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911390760.7A CN111007888A (en) | 2019-12-30 | 2019-12-30 | Dissolved oxygen control system in liquid metal coolant |
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| CN201911390760.7A CN111007888A (en) | 2019-12-30 | 2019-12-30 | Dissolved oxygen control system in liquid metal coolant |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414644A (en) * | 2022-01-10 | 2022-04-29 | 中国原子能科学研究院 | System and method for measuring oxygen content in liquid alkali metal |
| CN115354271A (en) * | 2022-08-22 | 2022-11-18 | 中国科学技术大学 | System and method for retarding corrosion of bundle cladding of lead-cooled fast reactor fuel assembly |
-
2019
- 2019-12-30 CN CN201911390760.7A patent/CN111007888A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414644A (en) * | 2022-01-10 | 2022-04-29 | 中国原子能科学研究院 | System and method for measuring oxygen content in liquid alkali metal |
| CN114414644B (en) * | 2022-01-10 | 2023-08-18 | 中国原子能科学研究院 | System and method for measuring oxygen content in liquid alkali metal |
| CN115354271A (en) * | 2022-08-22 | 2022-11-18 | 中国科学技术大学 | System and method for retarding corrosion of bundle cladding of lead-cooled fast reactor fuel assembly |
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