A cylindrical linear induction electromagnetic pump for transporting ultra-high temperature liquid metal

Abstract

The present invention provides a cylindrical linear induction electromagnetic pump for transporting ultra-high temperature liquid metal, which comprises a chuck, an inlet and outlet elbow, an outer stator winding, an outer stator core, a heat insulation material, a flow channel pipe, an inner stator, a support pipe, a heat dissipation rod and a guide plate; the heat dissipation rod can enhance the transfer of the radiant heat of the inner stator to both ends of the pump and radiate heat to the external environment through fins, effectively controlling the temperature of the inner stator of the electromagnetic pump to be lower than the demagnetization temperature of its material. The guide plate is circumferentially arranged at the inlet and outlet elbow, which can optimize the distorted flow field at the inlet and outlet of the flow channel of the electromagnetic pump and effectively enhance the stability of the internal flow. While ensuring the stability of fluid flow, the electromagnetic pump can strengthen the heat dissipation of the inner stator, reduce the temperature of the inner stator material, effectively solve the problem of the demagnetization phenomenon of the inner stator caused by the ferromagnetic material temperature reaching its Curie temperature due to high-temperature fluid, and provide a stronger guarantee for the efficient and stable operation of the electromagnetic pump.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic pumps, and particularly relates to a cylindrical linear induction electromagnetic pump for transporting ultra-high temperature liquid metal. Background Art

[0002] An electromagnetic pump is a pumping device used to transport conductive and magnetizable fluids (such as liquid metals). It can make the liquid metal generate a Lorentz force to push itself to flow through a changing electromagnetic field. According to different current supply methods, it is divided into a conduction electromagnetic pump and an induction electromagnetic pump. Among them, the cylindrical linear induction electromagnetic pump (Annular Linear Induction Pump, ALIP) belongs to the static type induction electromagnetic pump with coil arrangement. The radial cross-section of the pump groove is annular. The outer stator core is arranged on the outer cylindrical wall, and the inner stator core is placed in the inner cylinder. The liquid metal flow channel pump groove is between the inner and outer cores. The outside of the pump groove pipe is wrapped with heat insulation material to reduce the heat transfer from the high-temperature liquid metal to the ferromagnetic material. The coil winding of the cylindrical linear induction electromagnetic pump is externally connected to a three-phase alternating current, and a traveling magnetic field generated by excitation acts on the liquid metal to generate an induced current in it. The induced current of the liquid metal and the traveling magnetic field of the coil act together to generate a Lorentz force along the flow direction, driving the liquid metal to flow axially. The cylindrical linear induction electromagnetic pump adopts a non-contact driving method, has no mechanical movement, and the flow channel structure is simple. This pump can operate stably for a long time and will not cause leakage of the transported medium.

[0003] The cylindrical linear induction electromagnetic pump is an ideal drive pump model for the primary loop and the secondary loop of the metal cooling of the fourth-generation neutron-cooled fast reactor. In order to improve the efficiency of the thermal cycle system, the working temperature of the heat transfer medium in the neutron-cooled fast reactor is continuously increasing. At present, the temperature of the heat transfer medium inside the nuclear reactor can reach above 1000 degrees Celsius, which poses new requirements for the thermal management during the operation of the electromagnetic pump. However, experimental studies have shown that high-temperature fluids will cause the overall temperature of the electromagnetic pump to rise. Even though the pipeline is wrapped with heat insulation material to increase the thermal resistance, a large amount of heat is still transferred in the overall structure, making the temperature of the ferromagnetic material much higher than the normal temperature. When the temperature of the ferromagnetic material is higher than the Curie temperature of the material, the electromagnetic pump will experience the demagnetization phenomenon of the ferromagnetic material, seriously affecting the electromagnetic field distribution and the transportation capacity. Therefore, it is very important to conduct research on the design of a structure and device for enhancing the cooling and heat dissipation of the electromagnetic pump.

[0004] The domestic invention patent CN109154070 A, "Method for Controlling the Temperature of an Electromagnetic Pump", designs an evaporator device that dissipates heat by supplying, through a feed pipe, to the evaporator device in a vacuum chamber from a container suitable for containing liquid metal. The temperature of the electromagnetic pump is controlled by combining one or more of the force on the liquid metal, the current of the electromagnetic pump, and / or the magnetic field strength of the electromagnetic pump. The invention patent CN102242705A, "An Electromagnetic Pump Cooling System and Its Control Method", provides a set of systems for cooling electromagnetic pumps, including equipment such as an oil-water exchanger, a cooling water pump, a cooling water tank, and a cooling water tower, which can achieve oil temperature control and has complete functions such as detection and control for cooling electromagnetic pumps. The utility model patent CN 210669854U, "Electromagnetic Pump, Heat Dissipation System and Electronic Equipment", designs a heat dissipation system for liquid metal cooling and its own heat dissipation in electronic equipment. This system includes a delivery pipe and a heat dissipation unit, providing a new idea for cooling small chips. The domestic invention patent CN110994939A, "A Self-Stabilizing Cylindrical Linear Induction Electromagnetic Pump", significantly reduces the influence of circumferential non-uniformity on the stability of the flow field by setting a split stator and multiple sections of external stators arranged staggered, greatly improving the flow stability of large-flow pumps under small-flow conditions. The above patents all provide innovative measures and new structures for electromagnetic pump heat dissipation and self-stabilization, but at the same time, they increase the complexity of the system structure and are not applicable to the heat dissipation of large cylindrical linear induction electromagnetic pumps in special scenario applications (such as in the direction of space nuclear power). Summary of the Invention

[0005] To solve the technical problem that the ferromagnetic material temperature of a large high-temperature cylindrical linear induction electromagnetic pump exceeds the Curie temperature and demagnetization occurs, the present invention provides a cylindrical linear induction electromagnetic pump for transporting ultra-high temperature liquid metal, which enables the high-temperature metal fluid to flow stably and dissipate heat in a timely manner by setting inlet and outlet elbows and heat dissipation rods.

[0006] The present invention achieves the above technical objectives through the following technical means.

[0007] A cylindrical linear induction electromagnetic pump for transporting ultra-high temperature liquid metal, comprising a chuck, inlet and outlet elbows, an outer stator winding, an outer stator core, heat insulation material, a flow channel pipe, an inner stator, a support pipe, heat dissipation rods, and a guide plate;

[0008] The heat insulation material, the outer stator winding, the outer stator core, the inner stator, the support tube and the flow channel tube are coaxially arranged; the outer stator winding and the outer stator core are located outside the flow channel tube, the outer stator winding is filled in the slot of the outer stator core, the inner stator is located inside the flow channel tube, and the heat insulation material is distributed between the outer stator core and the flow channel tube, and between the inner stator and the flow channel tube; the chuck is connected to the outside of both ends of the flow channel tube and positions the outer stator core, the inlet and outlet elbows are axially arranged on both sides of the flow channel tube, and the inlet and outlet elbows communicate with the flow channel tube; the heat dissipation rods are coaxially arranged with the support tube and are both fixed on the inlet and outlet elbows; the outer stator windings are axially arrayed and filled in the slots of the outer stator core, the outer stator cores are circumferentially and evenly arrayed around the outer stator windings, and several axially arranged outer stator windings and several circumferentially arranged outer stator cores together form the outer stator structure.

[0009] In the above solution, the heat dissipation rods are coaxially arranged in the inner cylindrical region of the inner stator, and the center of the heat dissipation rods is a solid structure or a hollow structure.

[0010] In the above solution, the middle of the heat dissipation rod is thin and both ends are thick, fins are provided at the thick positions at both ends, or fins are provided on the heat dissipation rod along the axial direction.

[0011] In the above solution, the central part of the heat dissipation rod is a solid structure, made of a metal material with a high thermal conductivity coefficient, and the heat absorbed by the inner stator is transferred to the external environment through the fins on the heat dissipation rod by means of radiation heat dissipation.

[0012] In the above solution, the central part of the heat dissipation rod is a hollow structure, and a heat dissipation medium is passed through the hollow structure.

[0013] In the above solution, the inlet and outlet elbows are of a convex shape structure, including a vertical end and a rotating end. The high-temperature liquid metal enters through the vertical end of the inlet elbow, rotates through the rotating end and enters the flow channel tube, and then flows out of the flow channel tube through the rotating end of the outlet elbow and the vertical end.

[0014] In the above solution, several guide vanes are arranged inside the rotating end of the inlet and outlet elbows.

[0015] In the above solution, m guide vanes are arranged inside the inlet and outlet elbows, and the value of m is selected according to the flow field velocity uniformity index γ v to be selected. The larger the uniformity index γ v , the better the flow uniformity. γ v =1 represents uniform flow in the ideal state, and γ v =0 means that the fluid only passes through 1 measurement point. The uniformity index γ v for determining the number of guide vanes m is:

[0016]

[0017] Among them, n is the number of monitoring points, that is, the cross-section to be measured is evenly divided into n small cross-sections, and the center of each small interface is the monitoring point, v i and are respectively the velocity of the i-th monitoring point and the average velocity on the cross-section to be measured.

[0018] In the above solution, the external area of the chuck and the inlet and outlet elbows is made of degaussing stainless steel material, the internal flow channel area of the flow channel pipe and the inlet and outlet elbows is made of molybdenum-rhenium alloy material with high temperature resistance and corrosion resistance, and copper is used as the material for heat dissipation.

[0019] In the above solution, a high emissivity coating is applied to the inner side of the support pipe facing the hollow part to increase the radiation emissivity.

[0020] The present invention has the following beneficial effects:

[0021] 1. The present invention designs a cylindrical linear induction electromagnetic pump for the problem of transporting ultra-high temperature liquid metal. A heat dissipation strengthening device is added to the cylindrical hollow part inside the inner stator support pipe to strengthen the heat dissipation and cooling of the ferromagnetic material of the inner stator. The liquid metal is guided from the radial inlet and outlet directions through the elbow to flow axially, and a flow guide plate is added in the elbow to make the flow stable, providing a strong guarantee for the actual operation of the ultra-high temperature cylindrical linear induction electromagnetic pump.

[0022] 2. The electromagnetic pump of the present invention is arranged in a hollow manner, and heat dissipation rods are added to the internal cylindrical hollow part. The heat at the inner stator is mainly transferred to the heat dissipation rods through radiation and convection for enhanced heat dissipation and reduction of the temperature in the inner stator area of the electromagnetic pump, so that the temperature of the ferromagnetic material can still be controlled below the Curie temperature under high temperature conditions, greatly reducing the probability of the ferromagnetic material being demagnetized. The liquid metal is input and output through the inlet and outlet elbows. Considering gravity and the height of the inlet and outlet pipe heads, there is a flow resistance. A flow guide plate is arranged in the inlet and outlet elbows to ensure smooth and stable flow of the liquid metal structurally, effectively reducing the flow resistance and minimizing the influence of the inlet and outlet flow channels on the flow of the liquid metal in the electromagnetic section of the electromagnetic pump. Among them, the design of the flow guide plate depends on flow conditions (flow velocity, temperature, elbow size) and fluid physical properties (density, viscosity, velocity), etc. While ensuring the stability of the liquid metal flow at the inlet and outlet, the present invention strengthens the heat dissipation and cooling of the inner stator, can effectively transfer the heat of the inner stator and reduce the temperature of the ferromagnetic material, providing a strong guarantee for the stable, efficient and continuous operation of the large-scale high-temperature cylindrical linear induction electromagnetic pump.

[0023] 3. The present invention provides a cylindrical linear induction electromagnetic pump for conveying ultra-high temperature liquid metal. The high-temperature cylindrical area in the center of the electromagnetic pump radiates heat to the outside from both ends. Coaxial heat dissipation rods are added to enhance the ability of the internal heat to be conducted and dissipated to the outside of both ends. The inlet and outlet of the electromagnetic pump use elbows with internal guide plates to adjust the fluid flow mode between circumferential annular flow and axial pipe flow. The heat dissipation rods can enhance the transfer of radiated heat from the internal stator to both ends of the pump, and radiate heat to the external environment through fins, effectively controlling the temperature of the internal stator of the electromagnetic pump to be lower than the demagnetization temperature of its material. The guide plates are arranged circumferentially on the elbow, which can optimize the distorted flow field at the inlet and outlet of the electromagnetic pump flow channel and effectively enhance the stability of the internal flow. The electromagnetic pump can enhance the heat dissipation of the internal stator and reduce the temperature of the internal stator material while ensuring the stability of the fluid flow. It effectively solves the problem of internal stator demagnetization caused by the temperature of the ferromagnetic material reaching its Curie temperature caused by the high-temperature fluid, providing a stronger guarantee for the efficient and stable operation of the electromagnetic pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A quarter-section diagram of a cylindrical linear induction electromagnetic pump for conveying ultra-high temperature liquid metal;

[0025] Figure 2 for Figure 1 Axial cross-sectional view of

[0026] Figure 3 for Figure 1 Cross-sectional view of

[0027] Figure 4 for Figure 1 Perspective drawing of the inlet and outlet elbows involved;

[0028] Figure 5 for Figure 4 Perspective view of the inlet and outlet elbows after half-section;

[0029] Figure 6 for Figure 1 The heat sink involved in the test is a variable cross-section type.

[0030] Figure 7 for Figure 1 The heat sink involved in the test is a variable cross-section longitudinal fin type.

[0031] Figure 8 for Figure 1 The heat sink involved in the experiment is a variable cross-section circular fin type.

[0032] Figure 9 for Figure 1 The heat sink involved in the V-type;

[0033] Figure 10 forFigure 1 Schematic diagram of the heat sink involved in the hollow structure.

[0034] The reference numerals are as follows:

[0035] 1-chuck; 2-inlet and outlet elbows; 3-external stator winding; 4-external stator core; 5-thermal insulation material; 6-flow tube; 7-inner stator; 8-support tube; 9-heat dissipation rod; 10-guide plate. DETAILED DESCRIPTION

[0036] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "axial", "radial", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0038] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0039] Example:

[0040] In order to solve the technical problem that large high-temperature cylindrical linear induction electromagnetic pumps are demagnetized due to the high temperature of ferromagnetic materials exceeding the Curie temperature, the present invention discloses a cylindrical linear induction electromagnetic pump for conveying ultra-high temperature liquid metal. Figure 1-10 To elaborate.

[0041] Combined with attachment Figures 1 to 3 As shown, a cylindrical linear induction electromagnetic pump for conveying ultra-high temperature liquid metal includes a chuck 1, an inlet and outlet elbow 2, an outer stator winding 3, an outer stator core 4, a thermal insulation material 5, a flow channel tube 6, an inner stator 7, a support tube 8, a heat dissipation rod 9 and a guide plate 10;

[0042] The thermal insulation material 5, outer stator winding 3, outer stator core 4, inner stator 7, support tube 8 and runner tube 6 are coaxially arranged. The outer stator winding 3 and outer stator core 4 are located on the outside of the runner tube 6. The outer stator winding 3 is filled in the wire slot of the outer stator core 4. The inner stator 7 is located on the inside of the runner tube 6. The thermal insulation material 5 is distributed between the outer stator core 4 and the runner tube 6, and the inner stator 7 and the runner tube 6. The chuck 1 is connected to the outer side of both ends of the runner tube and clamps the outer stator core 4. The inlet and outlet elbows 2 are axially arranged on both sides of the runner tube 6. The inlet and outlet elbows 2 are communicated with the runner tube 6. The heat dissipation rod 9 is coaxially arranged with the support tube 8 and both are fixed on the inlet and outlet elbows 2.

[0043] In some embodiments, the outer stator winding 3 is axially arrayed and filled in the wire slots of the outer stator core 4, and the outer stator core 4 is circumferentially evenly arrayed in the outer stator winding 3. The eighteen axially arranged outer stator windings 3 and the eight circumferentially arranged outer stator cores 4 together constitute the outer stator structure.

[0044] In some embodiments, the interior of the support tube 8 is cylindrical and hollow. Figures 6-10 The heat dissipation rod 9 is axially arranged in the cylindrical area inside the inner stator support tube and fixed at the inlet and outlet elbows 2. The support tube 8 of the inner stator 7 radiates and convects heat to the heat dissipation rod through the internal hollow area, transfers its own heat to the heat dissipation rod, reduces its own temperature, and avoids the demagnetization of ferromagnetic materials due to temperatures exceeding the Curie temperature. Figures 6-10 Five types of heat sinks are available: variable-section, variable-section longitudinal fin, variable-section circular fin, V-shaped, and hollow. The variable-section longitudinal fin and variable-section circular fin heat sinks feature enhanced heat transfer at both ends of the variable-section heat sink. Fins are added to increase the surface area in contact with the outside world, or heat is transferred from the heat sink to the outside world via radiation or convection through a heat exchange medium, thereby lowering the heat sink's own temperature and better absorbing heat from the stator.

[0045] In some embodiments, as Figure 4 and 5, the inlet and outlet elbow 2 has a convex structure including a vertical end and a rotating end. The high-temperature molten metal flows into the rotating end through the vertical end and enters the flow channel pipe 6 from the rotating end. The structural design of the inlet and outlet elbow 2 converts the flow direction of the high-temperature molten metal between the radial direction and the axial direction, reducing the resistance of the inlet and outlet elbow to the liquid metal flow channel and avoiding the backflow that affects the work done by the Lorentz force in the electromagnetic section. The guide plate 10 is provided with m pieces inside the inlet and outlet elbow 2, and the value of m is selected according to the flow field velocity uniformity index γ v to be determined. The larger the uniformity index γ v , the better the flow uniformity. γ v =1 represents uniform flow under ideal conditions, and γ v =0 means that the fluid only passes through 1 measurement point. The uniformity index γ v that determines the number of guide vanes m is as follows:

[0046]

[0047] where n is the number of monitoring points (the measured cross-section is evenly divided into n small cross-sections, and the center of each small interface is the monitoring point), and v i and are the velocity of the i-th monitoring point and the average velocity on the measured cross-section respectively.

[0048] The guide vanes guide the liquid metal to turn from pipe flow to annular flow at the inlet and from annular flow to pipe flow at the outlet, reducing the resistance of the inlet and outlet elbow to the liquid metal flow channel and avoiding the backflow that affects the work done by the Lorentz force in the electromagnetic section.

[0049] In some embodiments, the outer stator winding 3 adopts a Y-shaped wiring method.

[0050] In some embodiments, the chuck 1 and the inlet and outlet elbow 2 are made of non-magnetic stainless steel materials, the flow channel pipe 6 is made of a molybdenum-rhenium alloy material with high temperature resistance and corrosion resistance, and the heat dissipation rod 9 is made of copper.

[0051] In some embodiments, both the outer stator core 4 and the inner stator 7 are formed by laminating multiple layers of silicon steel sheets.

[0052] In some embodiments, the chuck 1 is provided with a base, which facilitates the fixing and normal operation of the electromagnetic pump.

[0053] In some embodiments, the inner side of the support pipe 8 facing the hollow part needs to be coated with a high-emissivity coating to increase the radiation emissivity.

[0054] In summary, the present invention discloses a cylindrical linear induction electromagnetic pump for transporting ultra-high temperature liquid metal. The electromagnetic pump guides the liquid metal inlet and outlet radially through an elbow pipe and adds a flow guide plate in the elbow pipe to make the flow stable. A high-emissivity coating is applied on the inner side of the inner stator support pipe to increase the radiation heat transfer rate, and a heat dissipation enhancement device is added to the cylindrical hollow part inside the support pipe to strengthen the heat dissipation and cooling of the inner stator ferromagnetic material, providing a strong guarantee for the actual operation of a large-scale high-temperature cylindrical linear induction electromagnetic pump.

[0055] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0056] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention without departing from the principles and purposes of the present invention.

Claims

1. A cylindrical linear induction electromagnetic pump for transporting ultra-high temperature liquid metal, characterized in that, It includes a chuck (1), an inlet and outlet elbow (2), an outer stator winding (3), an outer stator core (4), a heat insulation material (5), a runner pipe (6), an inner stator (7), a support pipe (8), a heat dissipation rod (9) and a deflector plate (10); The heat insulation material (5), the outer stator winding (3), the outer stator core (4), the inner stator (7), the support pipe (8) and the runner pipe (6) are coaxially arranged; the outer stator winding (3) and the outer stator core (4) are located outside the runner pipe (6), the outer stator winding (3) is filled in the slots of the outer stator core (4), the inner stator (7) is located inside the runner pipe (6), and the heat insulation material (5) is distributed between the outer stator core (4) and the runner pipe (6), and between the inner stator (7) and the runner pipe (6); the chuck (1) is connected to the outer sides of both ends of the runner pipe (6) and positions the outer stator core (4), the inlet and outlet elbow (2) is axially arranged on both sides of the runner pipe (6), and the inlet and outlet elbow (2) communicates with the runner pipe (6); the heat dissipation rod (9) is coaxially arranged with the support pipe (8) and is fixed on the inlet and outlet elbow (2); the outer stator windings (3) are axially arrayed and filled in the slots of the outer stator core (4), the outer stator cores (4) are circumferentially and evenly arrayed around the outer stator windings (3), and several axially arranged outer stator windings (3) and several circumferentially arranged outer stator cores (4) together form an outer stator structure.

2. The cylindrical linear induction electromagnetic pump for transporting ultra-high temperature liquid metal according to claim 1, wherein The heat dissipation rod (9) is coaxially arranged in the inner cylindrical region of the inner stator (7), and the center of the heat dissipation rod (9) is a solid structure or a hollow structure.

3. The cylindrical linear induction electromagnetic pump for transporting ultra-high temperature liquid metal according to claim 1, characterized in that The middle of the heat dissipation rod (9) is thin and both ends are thick, and fins are provided at the thick positions of both ends, or fins are provided on the heat dissipation rod (9) along the axial direction.

4. The cylindrical linear induction electromagnetic pump for transporting ultra-high temperature liquid metal according to any one of claims 2 or 3, characterized in that The central part of the heat dissipation rod (9) is a solid structure, made of a metal material with a high thermal conductivity coefficient, and transfers the heat absorbed by the inner stator (7) to the external environment through the fins on the heat dissipation rod (9) by means of radiation heat dissipation.

5. The cylindrical linear induction electromagnetic pump for transporting ultra-high temperature liquid metal according to claim 2, characterized in that, The central part of the heat dissipation rod (9) is a hollow structure, and a heat dissipation medium is passed through the hollow structure.

6. The cylindrical linear induction electromagnetic pump for transporting ultra-high temperature liquid metal according to claim 1, characterized in that, The inlet and outlet elbow (2) is a convex-shaped structure, including a vertical end and a rotating end, and the high-temperature liquid metal enters through the vertical end and rotates into the runner pipe (6) through the rotating end.

7. The cylindrical linear induction electromagnetic pump for transporting ultra-high temperature liquid metal according to claim 6, characterized in that Several deflector plates (10) are arranged inside the rotating end of the inlet and outlet elbow (2).

8. The cylindrical linear induction electromagnetic pump for transporting ultra-high temperature liquid metal according to claim 7, characterized in that, The inlet and outlet elbow (2) is internally provided with m pieces of the flow guide plate (10), and the value of m is selected according to the flow field velocity uniformity index γ v to be determined. The larger the uniformity index γ v , the better the flow uniformity. γ v = 1 indicates uniform flow under ideal conditions, and γ v = 0 indicates that the fluid only passes through one measurement point. The uniformity index γ determining the number of guide vanes m v is as follows: where n is the number of monitoring points, that is, the cross-section to be measured is evenly divided into n small cross-sections, and the center of each small interface is the monitoring point, v i and are the velocity of the i-th monitoring point and the average velocity on the cross-section to be measured, respectively.

9. The cylindrical linear induction electromagnetic pump for transporting ultra-high temperature liquid metal according to claim 1, characterized in that, The external regions of the chuck (1) and the inlet and outlet elbow (2) are made of a non-magnetic stainless steel material, the internal flow passage regions of the runner pipe (6) and the inlet and outlet elbow (2) are made of a molybdenum-rhenium alloy material with high temperature resistance and corrosion resistance, and the heat dissipation rod (9) is made of copper.

10. The cylindrical linear induction electromagnetic pump for transporting ultra-high temperature liquid metal according to claim 1, wherein, A high-emissivity coating is applied to the surface of the support pipe (8) facing the hollow part on the inner side to increase the radiation emissivity.

Images