Liquid metal direct current electromagnetic pump

Abstract

The utility model relates to conductive fluid conveying equipment technical field especially relates to a kind of liquid metal direct current electromagnetic pump, liquid metal direct current electromagnetic pump includes pump body, permanent magnet, electrode, yoke, direct current power supply, import pipe, outlet pipe and liquid metal;Import pipe and outlet pipe are installed on pump body;Permanent magnet and electrode form inner runner, and liquid metal is injected in inner runner;Yoke wraps pump body, permanent magnet and electrode;Two permanent magnets are respectively arranged in pump body both sides;Two electrodes are respectively arranged on two grooves;Novel structure's liquid metal direct current electromagnetic pump, using the high thermal conductivity of liquid metal, high boiling point and the low voltage of direct current electromagnetic pump, the direct current of large current, through the interaction of electric field and magnetic field, improve the heat dissipation efficiency of liquid metal pipeline, improve the pain point that conductive fluid conveying equipment is big, structure is complex, easily leaks and wears etc.

Description

Technical Field

[0001] This utility model belongs to the technical field of conductive fluid conveying equipment, and in particular relates to a liquid metal DC electromagnetic pump. Background Technology

[0002] In recent years, with the significant increase in the use of electronic equipment in both military and civilian applications, operational experience has shown that the failure rate of components increases exponentially with rising temperatures, reducing equipment reliability to varying degrees. This presents both new challenges and opportunities for heat dissipation. Liquid metals have a much higher thermal conductivity than water, allowing them to fill pipes and further dissipate heat from various electronic devices, necessitating conductive fluid transport equipment. Electromagnetic pumps have been used to transport highly conductive liquid metals, requiring no moving or sealing components, and are small in size and simple in structure. As a key device in lead-cooled fast reactors for driving liquid lead / lead-bismuth alloy working fluids, electromagnetic pumps effectively avoid the corrosion and abrasion risks associated with mechanical pumps. However, existing commercial or demonstration-grade electromagnetic pumps are generally optimized for large systems, highlighting the urgent need to develop compact, efficient, and high-temperature resistant electromagnetic pump technology suitable for small, modular applications. Utility Model Content

[0003] In view of this, the present invention aims to provide a liquid metal DC electromagnetic pump, which utilizes the high thermal conductivity and high boiling point of liquid metal and the low voltage and high current of DC electromagnetic pump to improve the heat dissipation efficiency of liquid metal pipeline through the interaction of electric field and magnetic field, thereby improving the pain points of conductive fluid transportation equipment such as large size, complex structure, easy leakage and wear.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] This utility model provides a liquid metal DC electromagnetic pump, which includes a pump body, a permanent magnet, electrodes, a yoke, a DC power supply, an inlet pipe, an outlet pipe, and liquid metal;

[0006] The inlet pipe and the outlet pipe are installed on the pump body; the inlet pipe is connected to the inlet end of the pump body, and the outlet pipe is connected to the outlet end of the pump body; the permanent magnet and the electrode form an inner flow channel, and the liquid metal is poured into the inner flow channel;

[0007] The yoke encloses the pump body, the permanent magnet, and the electrode;

[0008] The permanent magnet includes a first permanent magnet and a second permanent magnet, and the electrode includes a first electrode and a second electrode; the DC power supply is connected to the first electrode and the second electrode.

[0009] The pump body includes a first main body surface and a second main body surface arranged opposite to each other; the first permanent magnet and the second permanent magnet are respectively disposed on the first main body surface and the second main body surface; a first groove is provided on the first main body surface and a second groove is provided on the second main body surface; the first electrode is disposed on the first groove and the second electrode is disposed on the second groove; the pump body includes a first side surface and a second side surface arranged opposite to each other; the inlet end of the pump body is located on the first side surface and the outlet end of the pump body is located on the second side surface.

[0010] Furthermore, the pump body is an integrally molded pump casing unit.

[0011] Furthermore, the liquid metal is a sodium-potassium alloy or a gallium-indium-tin alloy.

[0012] Furthermore, the inlet pipe is connected to the inlet end of the first side via laser welding, and the outlet pipe is connected to the outlet end of the second side via laser welding.

[0013] Furthermore, the pump body, the electrode, the yoke, the inlet pipe, and the outlet pipe are all made of metallic and non-metallic materials that do not react with the liquid metal.

[0014] Furthermore, the outer surface of the permanent magnet is provided with an epoxy resin layer.

[0015] Furthermore, the DC power supply is connected to the first electrode and the second electrode via a wire; an insulating sleeve is fitted on the outside of the wire.

[0016] Furthermore, the surface of the yoke includes an insulating and corrosion-resistant layer.

[0017] Furthermore, the electrode is a sheet electrode; the thickness of the sheet electrode is 0.75 mm.

[0018] Furthermore, the electrode is butterfly-shaped.

[0019] Furthermore, the electrode includes a boss, the first electrode includes a first boss, and the second electrode includes a second boss; the first boss is adapted to the first groove, and the second boss is adapted to the second groove.

[0020] Furthermore, the boss has a length of 26.7 mm and a width of 1.6 mm.

[0021] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0022] (1) Better heat dissipation effect; by setting a special structure, liquid metal can be used as the flow medium. Its high thermal conductivity can be used to quickly conduct the heat of the liquid metal pipeline to the heating element of the electronic device, avoiding the heat accumulation on the heating element and causing high temperature. The heat can be quickly dissipated through the large heat dissipation area of ​​the liquid metal pipeline, improving the heat dissipation performance of the electronic device and extending its service life.

[0023] (2) No moving and sealing parts, small size; The novel liquid metal DC electromagnetic pump provided by this utility model, compared with fluid transport equipment such as mechanical pumps, uses low voltage and high current DC electricity to drive conductive fluids such as liquid metal to flow in the pipeline through the interaction of electric field and magnetic field, eliminating moving and sealing parts, reducing volume, and can be applied to heat dissipation circuits of various electronic devices.

[0024] (3) Novel internal flow channel design; The novel liquid metal DC electromagnetic pump provided by this utility model adopts a pump shell unit, including metal electrodes, metal connectors and an integrated pump shell. The pump shell is constructed with permanent magnets to form an internal flow channel. The metal electrodes are located on both sides of the internal flow channel, and the metal connectors are located at both ends of the pump shell and are connected to the two ends of the internal flow channel. This design greatly simplifies the pump groove structure of the electromagnetic pump and compresses the structural dimensions of the electromagnetic pump, such as length and width.

[0025] (4) Superior magnetic circuit design; The novel liquid metal DC electromagnetic pump provided by this utility model adopts two permanent magnets corresponding to the left and right sides of the inner flow channel and set on the pump shell. The magnetic shell is sleeved on the pump shell. The magnetic field of the inner flow channel constructed by the permanent magnets is stronger. This design effectively reduces the overall thickness of the electromagnetic pump, thereby achieving an ultra-thin design. Attached Figure Description

[0026] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0027] Figure 1 This is a three-dimensional structural schematic diagram of the liquid metal DC electromagnetic pump described in an embodiment of the present invention;

[0028] Figure 2 This is a cross-sectional structural schematic diagram of the liquid metal DC electromagnetic pump described in an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the electrode structure in the liquid metal DC electromagnetic pump described in this embodiment of the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Pump body; 2. Permanent magnet; 3. Electrode; 4. Yoke; 5. DC power supply; 6. Inlet pipe; 7. Outlet pipe; 8. Liquid metal; 9. Boss. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and do not constitute a limitation thereof.

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0034] In the description of this utility model, 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 this utility model 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 this utility model. Furthermore, the terms "first," "second," etc., 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, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model based on the specific circumstances.

[0036] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] like Figure 1 and Figure 2The figures show a three-dimensional and cross-sectional schematic diagram of the liquid metal DC electromagnetic pump according to an embodiment of the present invention. As can be seen from the figures, the liquid metal DC electromagnetic pump includes a pump body 1, a permanent magnet 2, an electrode 3, a yoke 4, a DC power supply 5, an inlet pipe 6, an outlet pipe 7, and liquid metal 8. The inlet pipe 6 and the outlet pipe 7 are mounted on the pump body 1. Specifically, the inlet pipe 6 is connected to the inlet end of the pump body 1, and the outlet pipe 7 is connected to the outlet end of the pump body 1. The permanent magnet 2 and the electrode 3 form an inner flow channel in the pump body 1, and the liquid metal 8 is poured into the inner flow channel. Specifically, the liquid metal 8 enters from the inlet pipe 6, flows through the inner flow channel of the pump body 1, and then flows out through the outlet pipe 7. The yoke 4 is wrapped with... The system comprises a pump body 1, a permanent magnet 2, and an electrode 3. The permanent magnet 2 includes a first permanent magnet and a second permanent magnet, and the electrode 3 includes a first electrode and a second electrode. A DC power supply 5 connects the first electrode and the second electrode. The pump body 1 includes a first main body surface and a second main body surface arranged opposite to each other. The first permanent magnet and the second permanent magnet are respectively disposed on the first main body surface and the second main body surface. A first groove is provided on the first main body surface, and a second groove is provided on the second main body surface. The first electrode is disposed on the first groove, and the second electrode is disposed on the second groove. The pump body 1 includes a first side surface and a second side surface arranged opposite to each other. The inlet end of the pump body is located on the first side surface, and the outlet end of the pump body is located on the second side surface. By utilizing the high thermal conductivity and high boiling point of liquid metal and the low voltage and high current of the DC electromagnetic pump, the heat dissipation efficiency of the liquid metal pipeline is improved through the interaction of the electric field and the magnetic field, thus addressing the pain points of large size, complex structure, easy leakage, and wear of conductive fluid transportation equipment.

[0038] In a specific embodiment, the pump body 1 is an integrally formed pump casing unit; the liquid metal 8 can be any metal that is liquid at room temperature, preferably a sodium-potassium alloy or a gallium-indium-tin alloy; the inlet pipe 6 is connected to the inlet end of the first side by laser welding, and the outlet pipe 7 is connected to the outlet end of the second side by laser welding; the structural materials of the pump body 1, the electrode 3, the yoke 4, the inlet pipe 6, and the outlet pipe 7 are all metal and non-metal materials that do not react with the liquid metal; specifically, the metal material can be stainless steel and copper, and the non-metal material can be PC44. The outer surface of the permanent magnet 2 is coated with an epoxy resin layer; the DC power supply 5 is connected to the first electrode and the second electrode through a wire; an insulating sleeve is fitted on the outside of the wire.

[0039] In a specific embodiment, the outer surface of the yoke 4 includes an insulating and anti-corrosion layer, which is obtained through insulation and anti-corrosion treatment. Preferably, epoxy resin paint can be used for treatment, which can effectively improve the insulation and corrosion resistance of the yoke 4. The specific treatment process includes: first, strictly pre-treating the outer surface of the yoke 4, including degreasing and rust removal, to ensure the cleanliness of the substrate; then, applying epoxy resin paint, which is applied by spraying, dipping, or other methods, and fully curing at room temperature; the treated outer surface of the yoke 4 forms an epoxy resin layer, and the surface epoxy resin has good insulation, strong adhesion, and long-term corrosion resistance; ultimately, the outer surface of the yoke 4 can obtain a hard, smooth, and non-adhesive protective layer, which can effectively block current leakage and resist environmental erosion, significantly extending the service life of the equipment.

[0040] In a specific embodiment, the electrode 3 is a sheet electrode with a thickness of 0.75 mm; more preferably, the electrode 3 is butterfly-shaped, such as... Figure 3 The diagram shows the structure of the electrode in the liquid metal DC electromagnetic pump described in the embodiment. As can be seen from the diagram, the electrode 3 includes a boss 9, and the yoke 4 encloses the pump body 1, the permanent magnet 2, and the electrode 3, specifically enclosing the boss 9 portion of the electrode 3. Specifically, the first electrode includes a first boss, and the second electrode includes a second boss. The first boss is adapted to the first groove, and the second boss is adapted to the second groove. Specifically, a boss 9 with a length of 26.7 mm and a width of 1.6 mm is machined at the lower end of the electrode 3 at 3.6 mm, which can better adapt to the grooves on both sides (two main surfaces) of the pump body.

[0041] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this utility model can be achieved, and this is not limited herein.

[0042] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A liquid metal DC electromagnetic pump, characterized in that: The liquid metal DC electromagnetic pump includes a pump body, a permanent magnet, electrodes, a yoke, a DC power supply, an inlet pipe, an outlet pipe, and liquid metal. The inlet pipe and the outlet pipe are installed on the pump body; the inlet pipe is connected to the inlet end of the pump body, and the outlet pipe is connected to the outlet end of the pump body; the permanent magnet and the electrode form an inner flow channel, and the liquid metal is poured into the inner flow channel; The yoke encloses the pump body, the permanent magnet, and the electrode; The permanent magnet includes a first permanent magnet and a second permanent magnet, and the electrode includes a first electrode and a second electrode; the DC power supply is connected to the first electrode and the second electrode; The pump body includes a first main body surface and a second main body surface arranged opposite to each other; the first permanent magnet and the second permanent magnet are respectively disposed on the first main body surface and the second main body surface; a first groove is provided on the first main body surface and a second groove is provided on the second main body surface; the first electrode is disposed on the first groove and the second electrode is disposed on the second groove; the pump body includes a first side surface and a second side surface arranged opposite to each other; the inlet end of the pump body is located on the first side surface and the outlet end of the pump body is located on the second side surface.

2. The liquid metal DC electromagnetic pump according to claim 1, characterized in that: The pump body is a one-piece molded pump casing unit.

3. The liquid metal DC electromagnetic pump according to claim 1, characterized in that: The inlet pipe is connected to the inlet end of the first side by laser welding, and the outlet pipe is connected to the outlet end of the second side by laser welding.

4. The liquid metal DC electromagnetic pump according to claim 1, characterized in that: The outer surface of the permanent magnet is provided with an epoxy resin layer.

5. The liquid metal DC electromagnetic pump according to claim 1, characterized in that: The DC power supply is connected to the first electrode and the second electrode through a wire; an insulating sleeve is fitted on the outside of the wire.

6. The liquid metal DC electromagnetic pump according to claim 1, characterized in that: The outer surface of the yoke is provided with an insulating and corrosion-resistant layer.

7. The liquid metal DC electromagnetic pump according to claim 1, characterized in that: The electrode is a sheet electrode; the thickness of the sheet electrode is 0.75 mm.

8. The liquid metal DC electromagnetic pump according to claim 7, characterized in that: The electrode is butterfly-shaped.

9. The liquid metal DC electromagnetic pump according to claim 7, characterized in that: The electrode includes a boss, the first electrode includes a first boss, and the second electrode includes a second boss; the first boss is adapted to the first groove, and the second boss is adapted to the second groove.

10. The liquid metal DC electromagnetic pump according to claim 9, characterized in that: The boss has a length of 26.7 mm and a width of 1.6 mm.

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