An ultrahigh temperature liquid metal heating and cooling system

Abstract

The application discloses an ultrahigh-temperature liquid metal heating and cooling system, which comprises a storage tank, an ultrahigh-temperature test pipe, a mixer, a heat exchanger and a driving device, the liquid metal is stored in the storage tank, a first loop is arranged in the storage tank, the first loop is provided with the ultrahigh-temperature test pipe at one end away from the storage tank, the other end of the ultrahigh-temperature test pipe is provided with the mixer, the opening of the mixer is communicated with the first loop through a second loop, the outlet of the mixer is communicated with the inlet of the heat exchanger, and the outlet of the heat exchanger is communicated with the first loop; the driving device drives the liquid metal to enter the first loop, is heated and enters the ultrahigh-temperature test pipe, then enters the mixer, the liquid metal in the second loop also synchronously enters the mixer, the temperature of the ultrahigh-temperature liquid metal is effectively reduced through the action of the mixer, the temperature of the liquid metal is prevented from being too high, and when heat exchange is carried out in the heat exchanger, excessive corrosion occurs in the heat exchanger, so that the problem of pipe penetration is avoided.

Description

Technical Field

[0001] This invention relates to the field of liquid metal heating and cooling technology, and more specifically to an ultra-high temperature liquid metal heating and cooling system. Background Technology

[0002] Liquid lead or liquid lead-bismuth alloys have low neutron moderation capability, good thermal conductivity and very high boiling point, which makes it possible for nuclear reactors to operate at low or atmospheric pressure. These advantages make lead or lead-bismuth alloys an excellent coolant choice for fast neutron reactors. Therefore, lead-based fast reactors are considered the main reactor type of fourth-generation advanced nuclear energy systems.

[0003] Stainless steel is frequently used as a structural material in lead-based fast reactors. When stainless steel comes into contact with high-temperature liquid lead or liquid lead-bismuth alloys (hereinafter referred to as "high-temperature liquid metal"), it undergoes various corrosion phenomena, including oxidation, dissolution, erosion, and fretting wear, affecting the performance of the structural material. In particular, the high-temperature environment within the reactor can accelerate the failure of the structural material. Therefore, studying the corrosion characteristics of structural materials under high-temperature liquid metal conditions is essential for the safe operation of lead-based fast reactors.

[0004] In lead-based fast reactors, under normal operating conditions, liquid metal is heated to approximately 550°C by UO2 nuclear fuel with a very high melting point (2865°C). Under accident conditions such as reactive introduction, flow blocking, and flow loss, the liquid metal can be locally heated to ultra-high temperatures exceeding 700°C. Therefore, in order to conduct corrosion characteristic tests on structural materials in liquid metal under normal and accident conditions, it is necessary to design a test loop for high-temperature (550°C) and ultra-high-temperature (700°C) liquid metal.

[0005] In test circuits, ultra-high temperature liquid metal can corrode the circuit, leading to serious safety issues such as pipe perforation with prolonged use. Corrosion protection is also very costly. Therefore, it is necessary to design a suitable cooling system in the test circuit to cool the ultra-high temperature liquid metal and reduce its temperature to a reasonable level, thereby minimizing corrosion of the test equipment. Current technology typically involves directly passing the ultra-high temperature liquid metal through a heat exchanger to lower its temperature. However, this method can cause corrosion of the heat exchanger pipes under the heat exchange of the ultra-high temperature liquid metal, potentially leading to serious safety problems such as pipe perforation with long-term use.

[0006] Therefore, existing technologies still need to be improved and developed. Summary of the Invention

[0007] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an ultra-high temperature liquid metal heating and cooling system, which aims to solve the problem that the ultra-high temperature causes corrosion and tube penetration of the heat exchanger when the temperature is reduced by the heat exchanger in the existing ultra-high temperature liquid metal test.

[0008] The technical solution adopted by this invention to solve the technical problem is as follows:

[0009] A superheated liquid metal heating and cooling system includes a storage tank and liquid metal placed inside the storage tank, characterized in that it further includes:

[0010] An ultra-high temperature test tube, wherein the inlet of the ultra-high temperature test tube is connected to the inside of the storage tank through a first circuit, and a heating component is provided on the surface of the first circuit;

[0011] A mixer is disposed on one side of the ultra-high temperature test tube and connected to the outlet of the ultra-high temperature test tube. An inlet and an outlet are respectively disposed on opposite sides of the mixer. The inlet of the mixer is connected to the first circuit through a second circuit, and the connection point is located between the heating component and the storage tank.

[0012] A heat exchanger is disposed on one side of the mixer. The inlet of the heat exchanger is connected to the outlet of the mixer through a pipe. The outlet of the heat exchanger is connected to the first circuit through a third circuit, and the connection point is located between the connection point of the second circuit and the first circuit and the storage tank.

[0013] A drive device is mounted on the storage tank and cooperates with the storage tank to drive liquid metal into the first circuit.

[0014] Furthermore, the outlet of the mixer is provided with a high-temperature test tube, which is connected to the mixer via a pipeline. The end of the high-temperature test tube away from the mixer is connected to the inlet of the heat exchanger via a fourth circuit.

[0015] Furthermore, a regenerator is provided on the surface of the first circuit, and the fourth circuit passes through the regenerator.

[0016] Furthermore, the heating assembly includes:

[0017] A preheater is disposed on the surface of the first circuit and located near the storage tank, for heating the liquid metal inside the first circuit;

[0018] An electromagnetic heating device is disposed on the surface of the first circuit and located on the side of the preheater away from the storage tank, for heating the liquid metal inside the first circuit.

[0019] Furthermore, the driving device includes:

[0020] A vacuum machine is installed on one side of the storage tank, and the vacuum machine is connected to the inside of the storage tank through a pipe;

[0021] A high-pressure argon cylinder is located on one side of the storage tank, and the high-pressure argon cylinder is connected to the inside of the storage tank through a pipeline;

[0022] An electromagnetic pump, located inside the first circuit, is used to drive the liquid metal to flow within the first circuit.

[0023] Furthermore, electromagnetic flow meters are installed inside the first circuit, the second circuit, and the third circuit on the side closest to the storage tank.

[0024] Furthermore, a filter is installed inside the third circuit.

[0025] Furthermore, a second check valve is provided inside the third circuit.

[0026] Furthermore, one side of the third circuit is connected to an exhaust pipe, and a first regulating valve is installed inside the exhaust pipe.

[0027] Furthermore, the heat exchanger is a water-cooled heat exchanger.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] In this invention, liquid metal is stored in a storage tank. Under the action of a driving device, the liquid metal enters the first circuit and is heated to an ultra-high temperature by a heating component. The ultra-high temperature liquid metal then enters an ultra-high temperature test tube to conduct a corrosion test on the test material. After the corrosion test, the ultra-high temperature liquid metal enters a mixer. Simultaneously, the driving device drives the liquid metal in the storage tank into the second circuit and into the mixer, where the ultra-high temperature liquid metal mixes with the low temperature liquid metal to lower the temperature of the ultra-high temperature liquid metal. The lowered temperature liquid metal then enters a heat exchanger for heat exchange. Through the action of the mixer, the temperature of the ultra-high temperature liquid metal is effectively reduced, preventing the liquid metal from becoming too hot and causing excessive corrosion inside the heat exchanger during heat exchange, thus avoiding the problem of tube perforation. Attached Figure Description

[0030] Figure 1 A schematic diagram of the ultra-high temperature liquid metal heating and cooling system provided by the present invention.

[0031] Figure 2 This is a schematic diagram of the heating component structure of the present invention.

[0032] Figure 3 This is a schematic diagram of the drive device structure of the present invention.

[0033] Figure 4 This is a schematic diagram of the first loop structure of the present invention.

[0034] Figure 5 This is a schematic diagram of the second loop structure of the present invention.

[0035] Figure 6 This is a schematic diagram of the third loop structure of the present invention.

[0036] The numbers in the diagram represent: 1. Storage tank; 2. Ultra-high temperature test tube; 3. First loop; 4. Heating assembly; 5. Mixer; 6. Second loop; 7. Heat exchanger; 8. Third loop; 9. Drive device; 10. High temperature test tube; 11. Fourth loop; 12. Regenerator; 13. Preheater; 14. Electromagnetic heating device; 15. Vacuum machine; 16. High-pressure argon cylinder; 17. Electromagnetic pump; 18. Filter; 19. Exhaust pipe; 20. First regulating valve; 21. Second regulating valve; 22. Third regulating valve; 23. Fourth regulating valve; 25. First electromagnetic flowmeter; 26. Second electromagnetic flowmeter; 27. Heater; 28. Third electromagnetic flowmeter; 29. ​​First thermometer; 30. Second thermometer; 31. Third thermometer; 32. Fourth thermometer; 33. Fifth thermometer; 34. Sixth thermometer; 35. Seventh thermometer; 36. First check valve; 37. Second check valve. Detailed Implementation

[0037] To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0038] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0039] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] In view of the shortcomings of the prior art, this embodiment provides an ultra-high temperature liquid metal heating and cooling system, which can be specifically described as follows:

[0041] As attached Figure 1 Appendix Figure 4 Appendix Figure 5 and appendix Figure 6As shown, an ultra-high temperature liquid metal heating and cooling system includes a storage tank 1, an ultra-high temperature test tube 2, a mixer 5, a heat exchanger 7, and a driving device 9. Liquid metal is placed inside the storage tank 1, and a heater 27 is installed inside the storage tank 1 to prevent the liquid metal from cooling and solidifying. The ultra-high temperature test tube 2 is composed of the material to be tested. The inlet of the ultra-high temperature test tube 2 is connected to the inside of the storage tank 1 through a first circuit 3, which is inserted into the bottom of the storage tank 1 to facilitate the entry of liquid metal into the first circuit 3. A heating element 4 is installed on the surface of the first circuit 3 to heat the liquid metal to an ultra-high temperature, thereby enabling the ultra-high temperature liquid metal test. The mixer 5 is installed at the end of the ultra-high temperature test tube 2 away from the first circuit 3, and the ultra-high temperature test tube 2 is connected to the mixer 5 through a pipe, allowing the ultra-high temperature liquid metal passing through the ultra-high temperature test tube 2 to enter the mixer 5. An inlet and an outlet are respectively installed on opposite sides of the mixer 5. The inlet of the mixer 5 is connected to the side of the first circuit 3 closest to the storage tank 1 through a second circuit 6. The connection point between the second circuit 6 and the first circuit 3 is located between the heating component 4 and the storage tank 1 on the surface of the first circuit 3. The liquid metal inside the second circuit 6 is at a normal temperature and is not heated by the heating component 4. This allows the ultra-high temperature liquid metal and the normal temperature liquid metal to enter the mixer 5 simultaneously, thereby cooling the ultra-high temperature liquid metal. The outlet of the mixer 5 is connected to the inlet of the heat exchanger 7 through a pipe. The outlet of the heat exchanger 7 is connected to the first circuit 3 through the third circuit 8, and the connection point is located between the connection point of the second circuit 6 and the first circuit 3 and the storage tank 1. After the liquid metal enters the heat exchanger 7, its temperature decreases, and it flows in the third circuit 8, the second circuit 6, and the first circuit 3 to prevent the third circuit 8, the second circuit 6, and the first circuit 3 from being corroded and perforated by the ultra-high temperature liquid metal for a long time. The drive device 9 is installed on the storage tank 1 and cooperates with the storage tank 1 to allow the liquid metal inside the storage tank 1 to enter the first circuit 3 and flow in the first circuit 3, the second circuit 6, and the third circuit 8.

[0042] Specifically, heat exchanger 7 is a water-cooled heat exchanger 7. Both ends of heat exchanger 7 are connected to an external water supply device through pipes. The external water supply device includes a water tank and a water pump. A water pump can be installed in the inlet pipe to realize the flow of water inside heat exchanger 7 for continuous heat exchange. The mixer 5 has a cavity inside to facilitate the mixing of ultra-high temperature liquid metal and low temperature liquid metal in the second loop 6. Furthermore, a stirring paddle can be installed inside the mixer 5 to ensure thorough mixing and cooling.

[0043] The liquid metal inside the storage tank 1 is driven into the first circuit 3 and the second circuit 6 by the driving device 9. The liquid metal in the first circuit 3 is heated to an ultra-high temperature state by the heating component 4 to meet the test temperature requirements. The ultra-high temperature liquid metal enters the ultra-high temperature test tube 2 and then enters the mixer 5. At the same time, the low temperature liquid metal inside the second circuit 6 also enters the mixer 5. The ultra-high temperature liquid metal in the ultra-high temperature test tube 2 and the low temperature liquid metal in the second circuit 6 are mixed, which cools down the ultra-high temperature liquid metal. Then, it enters the heat exchanger 7 through the outlet of the mixer 5. The liquid metal cooled by the mixer 5 enters the heat exchanger 7, which effectively avoids corrosion and pipe perforation caused by the high temperature of the liquid metal. The mixer 5 cools down the liquid metal again to reach the preset temperature, so that the liquid metal cooled by the heat exchanger 7 flows in the first circuit 3, the second circuit 6 and the third circuit 8, avoiding corrosion and pipe perforation caused by the liquid metal being in a high or ultra-high temperature state.

[0044] Furthermore, a first thermometer 29 is installed at the outlet of the mixer 5 to detect the temperature of the liquid metal after mixing in the mixer 5. If the temperature is too high, the flow rate of liquid metal in the second loop 6 can be increased. A second thermometer 30 is installed at the outlet of the heat exchanger 7 to detect whether the temperature of the liquid metal after passing through the heat exchanger 7 has reached the preset temperature. If the temperature is too high or too low, the inlet water flow of the heat exchanger 7 can be increased or decreased to keep the liquid metal at the preset value, preventing the liquid metal temperature from being too high and affecting the pipeline, and at the same time preventing the liquid metal temperature from being too low and solidifying into a solid.

[0045] During operation, liquid metal is generally in a high-temperature state (around 550°C). Under accident conditions such as reactive introduction, flow blockage, and flow loss, the local liquid metal can be heated to ultra-high temperature (above 700°C). Therefore, in order to conduct corrosion characteristic tests of structural materials in liquid metal under normal operation and accident conditions, it is necessary to design a test circuit for high-temperature (550°C) and ultra-high-temperature (700°C) liquid metal.

[0046] As attached Figure 1As shown, an ultra-high temperature test tube 2 is installed at the end of the first loop 3 away from the storage tank 1 to test the effect of ultra-high temperature liquid metal. A high temperature test tube 10 is installed at the outlet of the mixer 5, and the outlet of the mixer 5 is connected to the inlet of the high temperature test tube 10 through a pipe. The end of the high temperature test tube 10 away from the mixer 5 is connected to the inlet of the heat exchanger 7 through the fourth loop 11. A first thermometer 29 is installed at the outlet of the mixer 5. A first regulating valve 20 is installed inside the second loop 6. By measuring the temperature, the opening and closing amount of the first regulating valve 20 inside the second loop 6 is adjusted to control the temperature of the liquid metal at the outlet of the mixer 5 to be in a high temperature state, and then enter the high temperature test tube 10 to realize the test work of the high temperature test tube 10.

[0047] The mixer 5 not only cools down the ultra-high temperature liquid metal inside the first circuit 3, but also sets up a high temperature test tube 10 at the outlet of the mixer 5 to conduct tests on the high temperature liquid metal. The tests on the ultra-high temperature liquid metal and the high temperature liquid metal are connected in series and carried out in parallel to realize the corrosion characteristics of the structural materials. This not only saves test time, but also saves costs and improves test efficiency.

[0048] Furthermore, a regenerator 12 is provided on the surface of the first loop 3, and the fourth loop 11 passes through the interior of the regenerator 12. The regenerator 12 is located inside the heating assembly 4. The liquid metal flowing out of the high-temperature test tube 10 can pass through the regenerator 12 to heat the first loop 3 and the liquid metal inside the regenerator 12, thereby realizing the recovery and utilization of the heat of the high-temperature liquid metal and achieving the effect of saving energy and reducing costs.

[0049] Furthermore, a third thermometer 31 is installed at the outlet of the high-temperature test tube 10. The temperature at the outlet of the high-temperature test tube 10 can be monitored in real time by measuring the temperature of the liquid metal inside the fourth loop 11, ensuring that the temperature of the liquid metal inside the first loop 3 in the regenerator 12 is higher than the temperature of the liquid metal inside the first loop 3. At the same time, a fourth thermometer 32 is also installed at the outlet of the regenerator 12 for real-time monitoring. A second regulating valve 21 is installed at the location between the connection point of the first loop 3 and the second loop 6 and the storage tank 1 to regulate the flow rate at the inlet of the first loop 3.

[0050] As attached Figure 1 and attached Figure 2As shown, the heating assembly 4 includes a preheater 13 and an electromagnetic heating device 14. The preheater 13 is disposed on the surface of the first circuit 3 and located near the storage tank 1. The preheater 13 is located between the connection point of the second circuit 6 and the first circuit 3 and the regenerator 12, and is used to heat the liquid metal in the first circuit 3. The electromagnetic heating device 14 is disposed on the surface of the first circuit 3 and located on the side of the preheater 13 away from the storage tank 1. The electromagnetic heating device 14 is located between the regenerator 12 and the ultra-high temperature test tube 2, and is used to heat the liquid metal inside the first circuit 3.

[0051] Specifically, the storage tank 1 is equipped with a heater 27 for the first stage of heating (≈350℃) to keep the metal in a liquid state; a preheater 13 for the second stage of heating (≈400℃) to heat the liquid metal to a medium temperature; a regenerator 12 for the third stage of heating (≈500℃) to heat the liquid metal to a sub-high temperature; and an electromagnetic heating device 14 for the fourth stage of heating (≈700℃) to heat the liquid metal to an ultra-high temperature. The preheater 13 is existing technology and can be either thermal heating or radiant heating. The electromagnetic heating device 14 is also existing technology and can achieve non-contact high-power induction heating, allowing the pipe and liquid metal to be heated simultaneously, reducing heat loss. Furthermore, the frequency conversion control of the electromagnetic heating device 14 makes power adjustment easier. Through multi-stage heating of the liquid metal, the power requirement for single-stage heating can be reduced, the risk of overheating and softening of the heated pipe can be lowered, and the heat of the liquid metal at the outlet of the high-temperature test section can be fully utilized, achieving energy and cost savings.

[0052] Furthermore, a fifth thermometer 33 is installed at the outlet of the preheater 13 to monitor the heating capacity of the preheater 13, and the heating power of the preheater 13 can be adjusted by measuring the value of the fifth thermometer 33; a sixth thermometer 34 is installed at the outlet of the electromagnetic heating device 14 to monitor the temperature of the liquid metal, and the heating power of the electromagnetic heating device 14 can be adjusted by measuring the value of the sixth thermometer 34; a seventh thermometer 35 is installed at the outlet of the regenerator 12 of the fourth circuit 11 to monitor the temperature of the liquid metal after the fourth circuit 11 passes through the regenerator 12.

[0053] Furthermore, a first check valve 36 is installed at the outlet of the preheater 13 in the first loop 3. At the same time, the check valve is located between the connection point of the first loop 3 and the second loop 6 and the preheater 13 to prevent liquid metal backflow. A second check valve 37 is installed in the third loop 8 near the storage tank 1 to prevent liquid metal backflow.

[0054] As attached Figure 1 and attached Figure 3As shown, the driving device 9 includes a vacuum machine 15, a high-pressure argon cylinder 16, and an electromagnetic pump 17. The vacuum machine 15 is located on one side of the storage tank 1 and is connected to the inside of the storage tank 1 through a pipe. It is used to evacuate the inside of the storage tank 1. The high-pressure argon cylinder 16 is located on one side of the storage tank 1 and is connected to the inside of the storage tank 1 through a pipe. The electromagnetic pump 17 is located inside the first circuit 3 and between the second regulating valve 21 and the storage tank 1. It is used to drive the flow of liquid metal in the first circuit 3.

[0055] Furthermore, a third regulating valve 22 is installed in the first circuit 3 between the electromagnetic pump 17 and the storage tank 1. Electromagnetic flow meters are installed in the first circuit 3, the second circuit 6 and the third circuit 8 near the storage tank 1. A first electromagnetic flow meter 25 is installed between the electromagnetic pump 17 and the second regulating valve 21. A second electromagnetic flow meter 26 is installed inside the second circuit 6. A third electromagnetic flow meter 28 is installed at the inlet position of the second check valve 37 in the third circuit 8.

[0056] Specifically, when the liquid metal is driven into the first circuit 3, the vacuum machine 15 does not work. At the same time, the first regulating valve 20, the second regulating valve 21, and the third regulating valve 22 are opened to the maximum. By opening the high-pressure argon cylinder 16, the argon gas inside the high-pressure argon cylinder 16 enters the storage tank 1, compressing the liquid metal. Due to the presence of the second check valve 37, the liquid metal enters the first circuit 3 and the second circuit 6 through the first circuit 3, and then enters the third circuit 8. The first electromagnetic flowmeter 25, the second electromagnetic flowmeter 26, and the third electromagnetic flowmeter 28 determine that the first circuit 3, the second circuit 6, and the third circuit 8 are full of liquid metal. The second regulating valve 21, the third regulating valve 22, the high-pressure argon cylinder 16, and the heater 27 in the storage tank 1 are closed in sequence to ensure that single-phase liquid metal flows in the test circuit and the test conditions are met. The remaining liquid metal in the storage tank 1 will gradually cool and solidify.

[0057] Start and adjust the electromagnetic pump 17 until the liquid metal flow rate measured by the first electromagnetic flow meter 25 meets the test requirements. Start the heat exchanger 7 and adjust the power of the preheater 13 and the electromagnetic heating device 14. At the same time, adjust the opening of the first regulating valve 20 until the temperature measured by the fifth thermometer 33, the fourth thermometer 32, the sixth thermometer 34 and the first thermometer 29 meets the test requirements. Conduct corrosion characteristic tests of structural materials in the ultra-high temperature test tube 2 and the high temperature sample.

[0058] After the test, the heat exchanger 7 is shut off, and the preheater 13 and electromagnetic heating device 14 are adjusted to low power to gradually cool the liquid metal in the test pipeline to a lower temperature level. The first regulating valve 20 is closed to interrupt the liquid metal flow in the second loop 6. Then, the electromagnetic pump 17 is turned off, allowing the liquid metal to flow slowly in the first loop 3. The heater 27 in the storage tank 1 is started to remelt the solidified metal in the storage tank 1. The third regulating valve 22 is opened, and the vacuum pump 15 is turned on to create a negative pressure in the top space of the storage tank 1. The vacuum pump 15 then extracts the liquid metal. The air is exhausted to the outside, and the liquid metal in the test pipeline is gradually drawn back into the storage tank 1. When the liquid metal flow rate of the first electromagnetic flowmeter 25 and the third electromagnetic flowmeter 28 is zero, it indicates that the liquid metal in the test pipeline has been completely drawn back into the storage tank 1. The vacuum machine 15 and the third regulating valve 22 are turned off in sequence, and the preheater 13, the electromagnetic heating device 14 and the heater 27 are adjusted. The liquid metal in the storage tank 1 is allowed to slowly cool to room temperature in preparation for the next test. Then the ultra-high temperature test tube 2 and the high temperature test tube 10 can be removed for characterization and testing.

[0059] Further details are attached. Figure 6 As shown, a filter 18 is installed in the third loop 8. The filter 18 is located at the outlet end of the heat exchanger 7 and is used to filter impurities in the liquid metal.

[0060] Furthermore, an exhaust pipe 19 is connected to one side of the third circuit 8. The exhaust pipe 19 is located between the second check valve 37 and the third electromagnetic flow meter 28. A fourth regulating valve 23 is installed inside the exhaust pipe 19. The exhaust pipe is used to discharge the air in the test pipe.

[0061] After the drive unit 9 is started, and the third electromagnetic flowmeter 28 detects a large flow rate and a stable liquid metal, and after a continuous small flow rate and a stable liquid metal leak occurs in the exhaust pipe 19, the fourth regulating valve 23 can be closed.

[0062] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the solutions disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the claims.

Claims

1. A superheated liquid metal heating and cooling system, comprising a storage tank and liquid metal placed inside the storage tank, characterized in that, Also includes: An ultra-high temperature test tube, wherein the inlet of the ultra-high temperature test tube is connected to the inside of the storage tank through a first circuit, and a heating component is provided on the surface of the first circuit; A mixer is disposed on one side of the ultra-high temperature test tube and connected to the outlet of the ultra-high temperature test tube. An inlet and an outlet are respectively disposed on opposite sides of the mixer. The inlet of the mixer is connected to the first circuit through a second circuit, and the connection point is located between the heating component and the storage tank. A heat exchanger is disposed on one side of the mixer. The inlet of the heat exchanger is connected to the outlet of the mixer through a pipe. The outlet of the heat exchanger is connected to the first circuit through a third circuit, and the connection point is located between the connection point of the second circuit and the first circuit and the storage tank. A driving device is mounted on the storage tank and cooperates with the storage tank to drive liquid metal into the first circuit; The mixer outlet is provided with a high-temperature test tube, which is connected to the mixer via a pipe. The end of the high-temperature test tube away from the mixer is connected to the inlet of the heat exchanger via a fourth loop. A regenerator is provided on the surface of the first loop, and the fourth loop passes through the regenerator.

2. The ultra-high temperature liquid metal heating and cooling system according to claim 1, characterized in that, The heating component includes: A preheater is disposed on the surface of the first circuit and located near the storage tank, for heating the liquid metal inside the first circuit; An electromagnetic heating device is disposed on the surface of the first circuit and located on the side of the preheater away from the storage tank, for heating the liquid metal inside the first circuit.

3. The ultra-high temperature liquid metal heating and cooling system according to claim 1, characterized in that, The driving device includes: A vacuum machine is installed on one side of the storage tank, and the vacuum machine is connected to the inside of the storage tank through a pipe; A high-pressure argon cylinder is located on one side of the storage tank, and the high-pressure argon cylinder is connected to the inside of the storage tank through a pipeline; An electromagnetic pump, located inside the first circuit, is used to drive the liquid metal to flow within the first circuit.

4. The ultra-high temperature liquid metal heating and cooling system according to claim 1, characterized in that, Electromagnetic flow meters are installed inside the first circuit, the second circuit, and the third circuit on the side closest to the storage tank.

5. The ultra-high temperature liquid metal heating and cooling system according to claim 1, characterized in that, The third circuit is equipped with a filter.

6. The ultra-high temperature liquid metal heating and cooling system according to claim 1, characterized in that, The third circuit is equipped with a second check valve.

7. The ultra-high temperature liquid metal heating and cooling system according to claim 1, characterized in that, The third circuit is connected to an exhaust pipe on one side, and a first regulating valve is installed inside the exhaust pipe.

8. The ultra-high temperature liquid metal heating and cooling system according to claim 1, characterized in that, The heat exchanger is a water-cooled heat exchanger.

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