CN111951987B - Small modular reactor coolant system and experimental method applying same - Google Patents
Small modular reactor coolant system and experimental method applying same Download PDFInfo
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- CN111951987B CN111951987B CN202010923117.2A CN202010923117A CN111951987B CN 111951987 B CN111951987 B CN 111951987B CN 202010923117 A CN202010923117 A CN 202010923117A CN 111951987 B CN111951987 B CN 111951987B
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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
- G21C15/24—Promoting flow of the coolant
- G21C15/243—Promoting flow of the coolant for liquids
- G21C15/247—Promoting flow of the coolant for liquids for liquid metals
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/02—Devices or arrangements for monitoring coolant or moderator
- G21C17/022—Devices or arrangements for monitoring coolant or moderator for monitoring liquid coolants or moderators
- G21C17/025—Devices or arrangements for monitoring coolant or moderator for monitoring liquid coolants or moderators for monitoring liquid metal coolants
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention discloses a small modular reactor coolant system, wherein liquid gallium metal is used as a coolant in the system, a certain amount of gas is added into the coolant, the natural circulation capacity of the liquid gallium metal is increased through the gas, the disturbance of the liquid gallium metal can also be increased, and the heat exchange effect is enhanced; through the system, the liquid gallium metal can be increased or reduced repeatedly, the doped gas can be increased or reduced at will, the air pressure is adjusted, the heat exchange capacity and the natural circulation capacity of the liquid gallium metal under various conditions are recorded and analyzed, and basic data are provided for building flexible and diverse small modular reactors.
Description
Technical Field
The invention relates to the field of nuclear energy, in particular to a small modular reactor coolant system.
Background
With the continuous increase of energy demand and the continuous enhancement of environmental awareness, the function of the nuclear reactor is more prominent. Rapid development of nuclear reactors also poses challenges to the efficiency of heat transfer to the reactor coolant and the safety of the reactor. In view of the fact that most nuclear reactors in the world are pressurized water reactors, and are of the type in which water is used as a reactor core coolant, research into the use of liquid metal as a reactor core coolant has been ongoing in recent years. Compared with a pressurized water reactor, the liquid metal coolant reactor has better natural circulation capacity, higher power density, better intrinsic safety when running under low pressure, smaller volume and more compact system. The research on taking three metals of sodium metal, lead and lead-bismuth alloy as the reactor core coolant is the most abundant, but the research on taking liquid metal gallium as the reactor core coolant is few, and the research on the aspects of the circulating capacity, the heat conductivity and the like after adding a small amount of gas into the liquid metal gallium is not even more.
In order to improve the flexibility of the reactor, a small modular reactor is rapidly developed, and has the advantages of integrated design, modular installation, high safety, wide applicability, short construction period, low one-time investment and the like, a scheme of combining liquid metal gallium and the small modular reactor is also a key point of future development, on the basis, research and acquisition of relevant parameters of the modular reactor taking the liquid metal gallium as a coolant are particularly important, and especially research on the performance of the coolant is important.
For the above reasons, the present inventors have conducted intensive studies on the existing reactor coolant performance research scheme, and have been expecting to design a small modular reactor coolant system capable of solving the above problems to study the liquid metal gallium coolant circulation capacity and the thermal conductivity.
Disclosure of Invention
In order to overcome the problems, the inventor of the invention carries out intensive research and designs a small modular reactor coolant system, liquid gallium is used as a coolant in the system, a certain amount of gas is added into the coolant, the natural circulation capacity of the liquid gallium metal is increased through the gas, the disturbance of the liquid gallium metal can also be increased, and the heat exchange effect is enhanced; the system can increase or reduce the liquid gallium metal repeatedly, can also increase or reduce the doped gas at will, adjust the air pressure, record and analyze the heat exchange capacity and the natural circulation capacity of the liquid gallium metal under various conditions, and provide basic data for building flexible and diverse small modular reactors, thereby completing the invention.
In particular, it is an object of the present invention to provide a small modular reactor coolant system comprising a reactor pressure vessel, a main pump and an inlet box;
wherein a coolant inlet and a coolant outlet are arranged on the wall surface of the reactor pressure vessel;
a reactor core is arranged below the inner part of the reactor pressure vessel, a steam generator is arranged above the inner part of the reactor pressure vessel,
a liquid outlet of the main pump is communicated to a coolant inlet through a coolant pipeline, and a liquid inlet of the main pump is communicated to a coolant outlet through a coolant pipeline;
the air inlet box is communicated with the coolant pipeline through an air suction pump.
Wherein, a coolant descending ring segment is arranged around the reactor core under the inner part of the reactor pressure vessel, one end of the coolant descending ring segment is communicated with a coolant inlet, the other end of the coolant descending ring segment is communicated with the bottom of the reactor pressure vessel,
a channel through which coolant flows is provided in the core, the channel communicating from the bottom of the reactor pressure vessel to the steam generator,
a heat exchange pipe is provided in the steam generator,
one end of the heat exchange tube is communicated with the channel in the reactor core, and the other end of the heat exchange tube is communicated with the coolant outlet.
The heat exchange tube is a spiral heat exchange tube, and heat transfer fins are arranged on the outer surface of the heat exchange tube.
Wherein, the system also comprises a pressure stabilizing tank and an air storage tank,
the pressure stabilizing tank is internally provided with a sealing partition plate which can reciprocate in the pressure stabilizing tank and keeps sealing contact with the inner wall of the pressure stabilizing tank;
the sealing clapboard divides the pressure stabilizing tank into an air cavity positioned at the lower part and a mixing cavity positioned at the upper part;
the air cavity is communicated with a coolant pipeline;
the mixing cavity is communicated with a gas storage tank.
The air storage tank is also communicated with an air inlet box 3;
preferably, a pipeline communicating the air storage tank with the mixing cavity is provided with a pressurization system, and a pipeline communicating the air storage tank with the air inlet box is also provided with a pressurization system;
preferably, the booster system comprises a booster pump and a compressor.
The pressurizing system is used for controlling the air pressure value in the air cavity and further controlling the air pressure value in the mixing cavity.
Wherein the air pump is used for conveying gas in the air inlet box into the coolant pipeline;
the air pump is also used for conveying the gas in the coolant pipeline to the air inlet box.
Wherein, the system also comprises a liquid metal gallium storage tank,
The liquid metal gallium storage tank is communicated with a coolant pipeline, and a feeding pump and a valve are arranged on the communication pipeline.
Preferably, the feed pump is used to pump liquid gallium from a liquid metallic gallium storage tank into the coolant conduit,
the feed pump is also used to pump liquid gallium from the coolant piping into a liquid gallium metal storage tank.
Wherein, a heater is arranged in the liquid metal gallium storage tank,
the heater continuously heats the gallium stored in the liquid gallium metal storage tank, so that the temperature of the gallium metal is maintained above 30 ℃, and the gallium metal is in a liquid state.
The invention also provides an experimental method for obtaining the heat exchange performance of the liquid gallium, which is realized by the small modular reactor coolant system;
preferably, the method comprises an experimental preparation process, an experimental process and an experimental inter-period treatment process:
the experimental preparation procedure comprises the following sub-steps:
Substep 3, opening a pressurization system 8 between the pressure stabilizing tank 6 and the gas storage tank 7, and controlling the gas pressure of a gas cavity 62 above a sealing partition plate 61 in the pressure stabilizing tank 6, so that the gas pressure in the coolant pipeline 4 is adjusted to an experimental preset gas pressure value until the pressure and the gas quantity in the coolant pipeline 4 meet requirements;
the experimental procedure comprises the following substeps:
substep a, starting the main pump 2 to circulate a gallium metal coolant in the coolant line 4;
step b, after the coolant circulation is stable, starting the reactor core of the reactor to ensure that the reactor works normally;
the experimental interval processing process comprises the following sub-steps:
a substep A, pumping the gas in the coolant pipeline 4 into an air inlet box by an air pump 5;
and a substep B, starting the main pump 2 to promote the circulation of the coolant and starting the reactor core to ensure that the temperature of liquid metal gallium in the coolant pipeline is maintained to be more than 40 ℃.
The invention has the advantages that:
(1) according to the small modular reactor coolant system and the experimental method applying the same, the natural circulation capacity of liquid gallium metal is improved by adding gas into the liquid gallium metal, the disturbance of the liquid gallium metal can also be increased, and the heat exchange effect is enhanced;
(2) According to the small modular reactor coolant system and the experimental method applying the same, the usage amount of coolant liquid gallium metal can be adjusted at any time, so that the usage amount of the liquid gallium metal is properly reduced when gas is added;
(3) according to the small modular reactor coolant system and the experimental method applying the same, the amount of gas added into the coolant can be adjusted at any time, so that the optimal combination ratio of the gas and the coolant can be found.
Drawings
Fig. 1 shows a schematic view of the overall structure of a small modular reactor coolant system according to a preferred embodiment of the present invention.
The reference numbers illustrate:
1-reactor pressure vessel
11-Coolant inlet
12-Coolant Outlet
13-core
14-steam generator
2-main pump
3-air inlet box
4-Coolant line
41-Coolant drop ring segment
42-heat exchange tube
5-air pump
6-pressure stabilizing tank
61-sealing diaphragm
62-air cavity
63-mixing chamber
7-gas storage tank
8-supercharging system
9-liquid metal gallium storage tank
91-charge pump
92-valve
93-Heater
Detailed Description
The invention is explained in more detail below with reference to the figures and examples. The features and advantages of the present invention will become more apparent from the description.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
According to the present invention there is provided a small modular reactor coolant system, as shown in figure 1, comprising a reactor pressure vessel 1, a main pump 2 and an inlet box 3.
Wherein, a coolant inlet 11 and a coolant outlet 12 are arranged on the wall surface of the reactor pressure vessel 1;
a core 13 is disposed below the inside of the reactor pressure vessel 1, a steam generator 14 is disposed above the inside of the reactor pressure vessel 1, the core 13 is used to heat a coolant, the core 13 can generate a large amount of heat in a short time to provide an extremely high temperature, and the core can be made of nuclear reactor fuel rods or a conventional energy source.
A liquid outlet of the main pump 2 is communicated to a coolant inlet 11 through a coolant pipeline 4, and a liquid inlet of the main pump 2 is communicated to a coolant outlet 12 through the coolant pipeline 4;
The intake box 3 communicates with the coolant piping 4 through a suction pump 5.
Preferably, a coolant drop ring segment 41 is arranged around the reactor core 13 below the inner part of the reactor pressure vessel 1, one end of the coolant drop ring segment 41 is communicated with the coolant inlet 11, and the other end of the coolant drop ring segment 41 is communicated to the bottom of the reactor pressure vessel 1.
A channel through which coolant flows is provided in the core 13, and communicates from the bottom of the reactor pressure vessel 1 to the steam generator 14, and a heat exchange tube 42, one end of which communicates with the channel in the core 13 and the other end of which communicates with the coolant outlet 12, is provided in the steam generator 14.
Through the arrangement, a closed-loop circulation pipeline of the coolant is formed, the coolant is driven by the main pump to flow through the reactor core 13 to obtain heat, the heat is carried to the steam generator 14, the heat is dissipated at the steam generator, and then the coolant flows back to the main pump to perform the next cycle.
Preferably, the reactor pressure vessel 1 may be provided in any size, in which the coolant pipes 4 may have a bore diameter of 1cm to 100cm, and may be formed as a circular pipe, a square pipe, or a diamond pipe, preferably, the coolant pipes have an inlet temperature of 200 ℃ to 300 ℃ and an outlet temperature of 400 ℃ to 500 ℃.
In a preferred embodiment, the heat exchange tube 42 is a spiral heat exchange tube, and a heat transfer fin is disposed on an outer surface of the heat exchange tube 42. Through setting up to spiral heat exchange tube increase heat transfer area, improve heat exchange efficiency, further set up heat transfer fin on this basis and can further strengthen heat transfer capacity, ensure in time with the heat conduction that the reactor produced to two return circuits coolants such as feedwater or steam.
Preferably, the material of the coolant channel and the heat exchange tube is selected to be a material with excellent corrosion resistance, so that the corrosion of gallium metal is avoided.
In a preferred embodiment, the system also comprises a surge tank 6 and an air storage tank 7, wherein a sealing partition plate 61 is arranged in the surge tank 6, and the sealing partition plate 61 can reciprocate in the surge tank 6 and is kept in sealing contact with the inner wall of the surge tank 6;
the sealing partition plate 61 divides the surge tank 6 into an air cavity 62 positioned at the lower part and a mixing cavity 63 positioned at the upper part; the air cavity 62 is communicated with the coolant pipeline 4; the mixing chamber 63 communicates with the air reservoir 7.
Through the arrangement of the pressure stabilizing tank 6, the gas pressure in the coolant pipeline can be conveniently controlled, and further the heat exchange performance and the natural circulation capacity of the coolant under different gas pressure conditions are obtained.
The gas tank is a shared gas source of the surge tank and the gas inlet box, so that the equipment of the reactor is simplified, the volume of the reactor is reduced, and the operation process is simplified.
Preferably, in order to record the heat exchange performance and the natural circulation capacity of the coolant, a temperature sensor and a flow meter are arranged at the two-loop coolant of the steam generator to calculate the transferred heat.
In the experimental process, the main pump can be suddenly closed at any time, so that the coolant loses the power of active flow, the coolant can perform natural circulation flow at the moment, the natural circulation flow is intensified under the action of gas, the natural circulation capacity of the coolant can be quantitatively analyzed by recording relevant parameters such as the flow speed, the heat transfer efficiency and the like of the coolant at the moment, and the optimal performance parameters under various working conditions can be obtained by adjusting the proportion of replacing gas and liquid gallium.
In a preferred embodiment, said air storage tank 7 is also in communication with the inlet box 3; a pressurizing system 8 is arranged on a pipeline which communicates the air storage tank 7 and the mixing cavity 63,
a pressurizing system 8 is also arranged on a pipeline for communicating the air storage tank 7 and the air inlet box 3;
preferably, the booster system 8 comprises a booster pump and a compressor.
The pressurization system 8 is used to control the air pressure in the air chamber 62 and thus in the mixing chamber 63. The pressurization system can control the air pressure in the coolant pipeline, so that experimental results under different air pressure conditions are given, and a data basis is provided for designing the pressure of the small modular reactor.
In a preferred embodiment, the suction pump 5 is used to feed the gas in the inlet box 3 into the coolant line 4; the air pump 5 is also used for conveying the gas in the coolant pipeline 4 to the air inlet box 3, namely the air pump can control the gas content in the coolant pipeline, and provides a data basis for repeated experiments; in the present application, the gas is an inert gas, such as helium, nitrogen, argon, and the like, and may also be a mixed gas of helium, nitrogen, and argon.
In a preferred embodiment, the system further comprises a liquid metallic gallium storage tank 9, said liquid metallic gallium storage tank 9 being in communication with the coolant conduit 4, on which communication conduit a feed pump 91 and a valve 92 are arranged.
Preferably, the feed pump 91 is used to pump liquid gallium from the liquid metallic gallium storage tank 9 into the coolant line 4,
the feed pump 91 is also used to pump liquid gallium from the coolant line 4 into the liquid metallic gallium storage tank 9. By providing the feed pump 91 and the phase gallium metal storage tank 9, the coolant can be replenished to the coolant piping at any time, or the coolant can be withdrawn from the coolant piping, thereby conveniently adjusting the amount of the coolant in the coolant piping.
In a preferred embodiment, a heater 93 is provided in the liquid metallic gallium storage tank 9,
the heating of the gallium metal stored in the liquid gallium metal storage tank 9 is continuously performed by the heater 93 so that the temperature of the gallium metal is maintained above 30 degrees celsius and the gallium metal is in a liquid state, and preferably, the temperature of the gallium metal in the liquid gallium metal storage tank 9 is controlled by the heater 93 to be maintained above 50 degrees celsius.
The invention also provides an experimental method for obtaining the heat exchange performance of the liquid gallium, which is realized by the small modular reactor coolant system;
preferably, the method comprises an experimental preparation process, an experimental process and an experimental inter-period processing process:
the experimental preparation process comprises the following steps: starting the feeding pump 91, injecting liquid metal gallium into the coolant pipeline 4, when the injection amount meets the experimental requirements, opening the pressurization system 8 between the gas storage tank 7 and the gas inlet box 3, pumping gas into the gas inlet box 3, then opening the air pump 5, pumping a proper amount of gas into the coolant pipeline 4, then opening the pressurization system 8 between the surge tank 6 and the gas storage tank 7, and controlling the gas pressure of the gas cavity 62 above the sealing partition plate 61 in the surge tank 6, so that the gas pressure in the coolant pipeline 4 is adjusted to the experimental preset pressure value. When the pressure and the gas quantity in the coolant pipeline 4 meet the requirements, the valve 92 for delivering the metal gallium is closed, and the gas valve between the air suction pump 5 and the coolant pipeline 4 is closed.
The experimental process comprises the following steps: the main pump 2 is started to circulate the metal gallium coolant in the coolant pipe 4, and after the coolant circulation is stabilized, the reactor core is started to operate normally.
Preferably, during normal operation of the reactor, the coolant is pushed by the main pump, flows through the coolant drop ring segment 41, is collected at the bottom of the reactor pressure vessel 1, turns upwards again to flow through the reactor core 13, continues to flow upwards after absorbing heat of the reactor core 13, exchanges heat through the heat exchange tubes when flowing through the steam generator 14, flows out of the steam generator 14 after the temperature of the coolant is reduced, and flows into the main pump 2 again to complete a cycle.
In the experimental process, after the reactor normally works, observing and recording data such as the flowing speed of the coolant, the heat transfer efficiency, the air pressure in a coolant pipeline and the like so as to judge the working performance of the coolant when the reactor normally works;
the main pump 2 is stopped, and the data of the flow speed of the coolant, the heat transfer efficiency, the air pressure in the coolant pipe, and the like are continuously recorded to judge the natural circulation flow capacity of the coolant when a fault occurs.
In the experimental interval processing process, gas in the coolant pipeline 4 is pumped into the air inlet box by the air pump 5;
Pumping liquid gallium metal in the coolant pipe 4 into a liquid gallium metal storage tank by a feed pump, or starting the main pump 2 to promote coolant circulation and open the core a small amount to ensure that the temperature of the liquid gallium metal in the coolant pipe is maintained above 40 degrees.
The present invention has been described above in connection with preferred embodiments, but these embodiments are merely exemplary and merely illustrative. On the basis of the above, the invention can be subjected to various substitutions and modifications, and the substitutions and the modifications are all within the protection scope of the invention.
Claims (12)
1. A small modular reactor coolant system, characterized in that it comprises a reactor pressure vessel (1), a main pump (2) and an inlet box (3);
wherein a coolant inlet (11) and a coolant outlet (12) are arranged on the wall surface of the reactor pressure vessel (1);
a reactor core (13) is arranged below the inner part of the reactor pressure vessel (1), a steam generator (14) is arranged above the inner part of the reactor pressure vessel (1),
a liquid outlet of the main pump (2) is communicated to a coolant inlet (11) through a coolant pipeline (4), and a liquid inlet of the main pump (2) is communicated to a coolant outlet (12) through the coolant pipeline (4);
The air inlet box (3) is communicated with the coolant pipeline (4) through an air suction pump (5);
the system also comprises a liquid metallic gallium storage tank (9),
the liquid metal gallium storage tank (9) is communicated with the coolant pipeline (4), and a feeding pump (91) and a valve (92) are arranged on the communication pipeline;
the feed pump (91) is used for pumping liquid gallium from a liquid metal gallium storage tank (9) into the coolant pipeline (4),
the feed pump (91) is also used to pump liquid gallium from the coolant line (4) into the liquid metallic gallium storage tank (9).
2. A compact modular reactor coolant system as set forth in claim 1,
a coolant descending ring section (41) is arranged around the reactor core (13) below the inside of the reactor pressure vessel (1), one end of the coolant descending ring section (41) is communicated with a coolant inlet (11), the other end of the coolant descending ring section (41) is communicated to the bottom of the reactor pressure vessel (1),
a channel through which coolant flows is provided in the core (13) and communicates from the bottom of the reactor pressure vessel (1) to the steam generator (14),
a heat exchange tube (42) is arranged in the steam generator (14),
one end of the heat exchange tube is communicated with a channel in the reactor core (13), and the other end is communicated with a coolant outlet (12).
3. A compact modular reactor coolant system as set forth in claim 2,
the heat exchange tube (42) is a spiral heat exchange tube, and heat transfer fins are arranged on the outer surface of the heat exchange tube (42).
4. A compact modular reactor coolant system as set forth in claim 1,
the system also comprises a pressure stabilizing tank (6) and an air storage tank (7),
a sealing partition plate (61) is arranged in the pressure stabilizing tank (6), and the sealing partition plate (61) can reciprocate in the pressure stabilizing tank (6) and keeps sealing contact with the inner wall of the pressure stabilizing tank (6);
the sealing partition plate (61) divides the pressure stabilizing tank (6) into an air cavity (62) positioned at the upper part and a mixing cavity (63) positioned at the lower part;
the air cavity (62) is communicated with a coolant pipeline (4);
the mixing cavity (63) is communicated with the air storage tank (7).
5. A compact modular reactor coolant system as set forth in claim 4,
the air storage tank (7) is also communicated with the air inlet box (3).
6. A compact modular reactor coolant system as set forth in claim 5,
a pressurizing system (8) is arranged on a pipeline communicating the gas storage tank (7) and the mixing cavity (63),
a pressurizing system (8) is also arranged on a pipeline for communicating the air storage tank (7) and the air inlet box (3).
7. A compact modular reactor coolant system as set forth in claim 6,
the supercharging system (8) comprises a booster pump and a compressor.
8. A compact modular reactor coolant system as set forth in claim 6,
the pressurization system (8) is used for controlling the air pressure value in the air cavity (62) and further controlling the air pressure value in the mixing cavity (63).
9. A compact modular reactor coolant system as set forth in claim 1,
the air suction pump (5) is used for conveying the gas in the air inlet box (3) to the coolant pipeline (4);
the suction pump (5) is also used for conveying the gas in the coolant line (4) into the inlet box (3).
10. A compact modular reactor coolant system as set forth in claim 1,
a heater (93) is arranged in the liquid metal gallium storage tank (9),
the heater (93) continuously heats the gallium stored in the liquid gallium metal storage tank (9), so that the temperature of the gallium metal is maintained above 30 ℃, and the gallium metal is in a liquid state.
11. An experimental method for knowing the heat exchange performance of liquid gallium is characterized in that,
this method is achieved by a compact modular reactor coolant system according to any of the preceding claims 1-10.
12. Experimental method for learning heat exchange performance of liquid gallium according to claim 11,
the method comprises an experiment preparation process, an experiment process and an experiment interval processing process:
the experimental preparation process comprises the following substeps:
substep 1, starting the feed pump 91 to inject liquid metallic gallium into the coolant pipe 4;
step 2, opening a pressurization system 8 between the gas storage tank 7 and the gas inlet box 3, pumping gas into the gas inlet box 3, and then opening the air pump 5 to pump the gas into the coolant pipeline 4;
substep 3, opening a pressurization system 8 between the pressure stabilizing tank 6 and the gas storage tank 7, and controlling the gas pressure of a gas cavity 62 above a sealing partition plate 61 in the pressure stabilizing tank 6, so that the gas pressure in the coolant pipeline 4 is adjusted to an experimental preset gas pressure value until the pressure and the gas quantity in the coolant pipeline 4 meet requirements;
the experimental procedure comprises the following substeps:
substep a, starting the main pump 2 to circulate a gallium metal coolant in the coolant line 4;
step b, after the coolant circulation is stable, starting the reactor core of the reactor to ensure that the reactor works normally;
the experimental interval processing process comprises the following sub-steps:
a substep A, pumping the gas in the coolant pipeline 4 into an air inlet box by an air pump 5;
And a substep B, starting the main pump 2 to promote the circulation of the coolant and starting the core to ensure that the temperature of the liquid metal gallium in the coolant pipeline is maintained to be higher than 40 ℃.
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