CN114640233B

CN114640233B - Electromagnetic pump

Info

Publication number: CN114640233B
Application number: CN202210499015.1A
Authority: CN
Inventors: 方攸同; 吴文潇; 马吉恩; 邱麟; 吴立建; 吴奇奕; 朱思贤; 罗超
Original assignee: Zhejiang University ZJU
Current assignee: Zhejiang University ZJU
Priority date: 2022-05-09
Filing date: 2022-05-09
Publication date: 2022-08-23
Anticipated expiration: 2042-05-09
Also published as: CN114640233A

Abstract

The invention discloses an electromagnetic pump, comprising: a pump body formed with an accommodation space; an inner core at least partially disposed in the receiving space; a plurality of outer cores disposed at least partially around the inner core; a winding at least partially disposed on the outer core; the pump channel mechanism is at least partially arranged between the outer iron core and the inner iron core; the outer iron core includes: the yoke ring is basically a circular ring body; the tooth yoke ring is basically a circular ring body and is stacked with the yoke ring; a blocking layer at least partially disposed in the yoke ring and at least partially disposed in the tooth yoke ring; the tooth yoke ring includes a number of first laminations stacked to form the tooth yoke ring. The invention has the beneficial effects that: the yoke ring can adopt an integral structure, which is beneficial to reducing the magnetic resistance of magnetic flux when the magnetic flux passes through the yoke part of the third outer iron core; the tooth yoke ring adopts the second axial lamination, so that the eddy current can only be limited on one second lamination for circumferential flow, and the amount of current flowing in the circumferential direction is reduced.

Description

Electromagnetic pump

Technical Field

The invention relates to the field of electromagnetic pumps, in particular to an induction type electromagnetic pump.

Background

In the prior art, because the magnetic field has the problem of penetration depth, the inner iron core is arranged for improving the penetration depth of magnetic lines of force, so that the pump groove is completely positioned in the magnetic field, the output of the electromagnetic pump is increased, and the utilization efficiency of the electromagnetic pump is improved. However, when the electromagnetic pump operates under a high-frequency condition, circumferential eddy currents are generated by the inner iron core and the outer iron core of the electromagnetic pump, so that great eddy current loss and heat generation of the pump body are caused, the flow characteristics of metal fluid are influenced, fluid analysis becomes complex, the efficiency of the electromagnetic pump is reduced under a more serious condition, the temperature rise is improved, the instability of a system is increased, and more strict requirements are provided for the conditions of insulation, cooling and the like.

In the conventional cylindrical electromagnetic pump structure, the inner iron core adopts a cylindrical (or circular ring-shaped) structure. Along with the aggravation of market competition, the manufacturing cost of the electromagnetic pump is reduced, the system loss is reduced, and the efficiency is inevitably required for design. The radius of the iron core in the existing electromagnetic pump is larger, the manufacturing material consumption is large, the cost is high, the eddy current loss is obvious, and the solid structure makes the design of a heat dissipation structure more difficult.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide an electromagnetic pump capable of reducing eddy current loss.

In order to achieve the purpose, the invention adopts the following technical scheme:

an electromagnetic pump comprising: the pump body is provided with an accommodating space; the inner iron core is at least partially arranged in the accommodating space; the plurality of outer iron cores are at least partially arranged around the inner iron core; the winding is at least partially arranged on the outer iron core; the pump channel mechanism is at least partially arranged between the outer iron core and the inner iron core; the outer iron core includes: a yoke ring, the yoke ring being substantially a torus; the tooth yoke ring is basically a circular ring body and is stacked with the yoke ring; a blocking layer at least partially disposed in the yoke ring and at least partially disposed in the tooth yoke ring; the tooth yoke ring includes a plurality of first laminations stacked to form a tooth yoke ring.

Further, the inside diameter of the tooth yoke ring is smaller than the inside diameter of the yoke ring.

Further, the yoke ring is formed with a placement space for disposing the winding.

Further, the outer diameter of the tooth yoke ring and the outer diameter of the yoke ring are substantially the same.

Further, the partition layer extends substantially in the axial direction of the electromagnetic pump; the partition layer is made of insulating magnetic conductive material.

Further, when the blocking layer is at least partially disposed in the toothed yoke ring, a length of the blocking layer in a radial direction of the electromagnetic pump is a first length, a length of the toothed yoke ring in the radial direction of the electromagnetic pump is a second length, and the first length and the second length are substantially the same.

Further, when the blocking layer is at least partially disposed in the yoke ring, a length of the blocking layer in a radial direction of the electromagnetic pump is a third length, a length of the yoke ring in the radial direction of the electromagnetic pump is a fourth length, and the third length and the fourth length are substantially the same.

Further, the pump body includes first casing and second casing, and first casing sets up around the second casing, and the second casing is at least partly around a plurality of outer iron core setting.

Furthermore, a cooling water channel is arranged on the second shell and comprises a plurality of water channels and a plurality of connecting water channels, and two adjacent water channels are connected through the connecting water channels.

Further, the water passage is arranged along the circumferential direction of the second shell, and the connecting water passage is arranged substantially along the axial direction of the second shell.

Compared with the prior art, the electromagnetic pump provided by the invention can adopt an integral structure through the yoke ring, is favorable for reducing the magnetic resistance of magnetic flux when the magnetic flux passes through the yoke part of the third outer iron core, and is favorable for distributing magnetic fields; the axial second lamination is adopted by the toothed yoke ring, so that the radial magnetic resistance is not greatly influenced, the eddy current can only be limited on one second lamination to flow in the circumferential direction, and the current amount flowing in the circumferential direction is reduced.

Drawings

Fig. 1 is a schematic view of a first structure of an electromagnetic pump according to the present invention.

Fig. 2 is a partial enlarged view of the invention at a in fig. 1.

FIG. 3 is a schematic view of a first structure of the chambered structure of the present invention.

FIG. 4 is a schematic view of a second structure of the chambered structure of the present invention.

FIG. 5 is a schematic view of a third structure of the chambered structure of the present invention.

Fig. 6 is a schematic structural view of a first inner core according to the present invention.

Fig. 7 is a schematic structural view of a second inner core according to the present invention.

Fig. 8 is a schematic structural view of a first outer core and a third inner core according to the present invention.

Fig. 9 is a schematic view of a first configuration of the pump body according to the invention.

Fig. 10 is a second structural schematic of the pump body of the present invention.

FIG. 11 is a third schematic view of the pump body of the present invention.

Fig. 12 is a schematic view of a fourth configuration of the pump body according to the invention.

Fig. 13 is a fifth constructive schematic view of the pump body according to the invention.

Fig. 14 is a sixth constructive illustration of the pump body according to the invention.

Fig. 15 is a schematic view of a structure of a second outer core according to the present invention.

Fig. 16 is a partial structural view of a second outer core according to the present invention.

Fig. 17 is a schematic structural view of a third outer core according to the present invention.

Fig. 18 is a partial enlarged view of the invention at B in fig. 17.

Fig. 19 is a schematic structural view of the first supporting member of the present invention.

FIG. 20 is a schematic structural view of a second support member according to the present invention.

FIG. 21 is a schematic structural view of a third supporting member according to the present invention.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the present invention in the specific embodiment will be clearly and completely described below with reference to the attached drawings in the embodiment of the present invention.

As shown in fig. 1, an electromagnetic pump 100 includes a pump body 11, a winding 12, a plurality of outer cores 13, an inner core 14, and a pump groove mechanism 15. The pump body 11 is formed with a first accommodation space. The winding 12 is at least partially arranged in the first accommodation space, and the winding 12 is at least partially arranged on the outer core 13 for carrying current. A plurality of outer cores 13 are at least partially disposed in the first receiving space, and inner cores 14 are also at least partially disposed in the first receiving space. A plurality of outer cores 13 are all arranged at least partially around the inner core 14, so that a magnetic field is generated between the outer cores 13 and the inner core 14 through current in the winding 12, and further electromagnetic induction is realized. The pump channel mechanism 15 is at least partially disposed in the first accommodation space and at least partially disposed between the outer core 13 and the inner core 14 for serving as a passage for the flow of the liquid metal. Specifically, after the winding 12 is energized, the magnetic field generated between the outer iron core 13 and the inner iron core 14 and the liquid metal in the pump groove mechanism 15 act to generate an induced current, and the liquid metal in the pump groove mechanism 15 becomes a current-carrying conductor, so that the liquid metal and the magnetic field act to generate an electromagnetic force, and further, the liquid metal is driven to flow directionally.

As shown in fig. 1 and 2, the pump channel mechanism 15 includes, as one implementation, a flow channel 151, a pump channel wall 152, and a protective layer 153. The pump groove wall 152 includes a first pump groove wall 1521 and a second pump groove wall 1522, the flow channel 151 is disposed between the first pump groove wall 1521 and the second pump groove wall 1522, and a gap between the first pump groove wall 1521 and the second pump groove wall 1522 is the flow channel 151. The protective layer 153 includes a first protective layer 1531 and a second protective layer 1532 for improving the strength of the pump groove wall 152, thereby fixing the shape of the flow channel 151 to facilitate the flow of the liquid metal. The pump groove wall 152 is disposed between the first protective layer 1531 and the second protective layer 1532, and the flow channel 151 is disposed between the first protective layer 1531 and the second protective layer 1532. Specifically, a first protective layer 1531 is disposed between the outer core 13 and the first pump channel wall 1521, and a second protective layer 1532 is disposed between the inner core 14 and the second pump channel wall 1522. Namely, the outer core 13, the first protection layer 1531, the first pump groove wall 1521, the flow channel 151, the second pump groove wall 1522, and the second protection layer 1532 are sequentially arranged from the outside to the inside. In this embodiment, the pump groove wall 152 may be made of a ceramic material, that is, the pump groove wall 152 may be made of silicon nitride ceramic, which has stable properties, is non-magnetic, non-conductive, and corrosion resistant, so that the pump groove wall 152 may have good corrosion resistance and high strength. The protective layer 153 can be made of carbon fiber, and the pump groove wall 152 can have certain ductility, so that after the temperature is changed, the expansion with heat and the contraction with cold of the pump groove mechanism 15 are solved, the toughness of the pump groove mechanism 15 can be improved, and the safety of the electromagnetic pump 100 is improved.

As shown in fig. 1, as an implementation manner, the plurality of outer iron cores 13 are at least partially disposed around the inner iron core 14, and one end of the plurality of outer iron cores 13 close to the pump channel mechanism 15 is a first end, an end surface of the first end is a first arc surface, and the first arc surface has a first arc shape. Through the above arrangement, the area of the polar arc that can be provided by the first end is larger than the area of the polar arc that is provided when the first end is a plane, so that the area of the polar arc of the first end can be increased, the circulation of the liquid metal in the pump ditch mechanism 15 is reduced, and the flow and the efficiency of the electromagnetic pump 100 are further improved. Specifically, a plurality of first arc surfaces of the outer iron cores 13 jointly form a cylindrical space, and the cross section of the cylindrical space is a first circle. The center of the first circle is substantially coincident with the center of the inner core 14, so that concentricity of the electromagnetic pump 100 is realized, and the possibility of unilateral magnetic pressure can be effectively reduced. In this embodiment, the outer core 13 may be made of silicon steel, so that the most effective exchange of energy between electric energy and magnetic energy is performed.

In the present embodiment, the first pump groove wall 1521 and the second pump groove wall 1522 have substantially the same thickness and have thicknesses of

The first and second

protective layers

1531 and 1532 have substantially the same thickness

. The inner core 14 is substantially cylindrical and the radius of the inner core 14 is r. The cross section of the circulation channel 151 is basically circular, and the circle centers of the cross section of the circulation channel 151 and the cross section of the inner iron core 14 are basically overlapped, so that the concentricity of the electromagnetic pump 100 is realized, and the possibility of unilateral magnetic pressure can be effectively reduced. The width of the flow-through channel 151 is h, which refers to the distance between the outer and inner rings of the flow-through channel 151 in the radial direction of the ring. The cross section of the cylindrical space formed by the plurality of outer iron cores 13, namely the circle center of the first circle is basically coincident with the circle center of the cross section of the inner iron core 14, so that the concentricity of the electromagnetic pump 100 is realized, and the possibility of unilateral magnetic pressure can be effectively reducedAnd (4) performance. The distance between the first circle and the outer sidewall of the first protective layer 1531 in the radius direction of the first circle is δ. The first circle has a first radius

The outer core 13 substantially about a first radius

Are symmetrically arranged. The width of the outer core 13 is L, L being perpendicular to the first radius

The directional width, specifically, L, refers to the distance between the two end points of the outer core 13 near the pump groove mechanism 15. According to the Pythagorean theorem, the following can be obtained:

from the above formula, the radian of the first cambered surface of the outer iron core 13 is

。

As an implementation mode, the circle center of the first circle is connected with one end of the first arc to form a first straight line, and the circle center of the first circle is connected with the other end of the first arc to form a second straight line. The area enclosed by the first arc, the first straight line and the second straight line is the first area S1. Specifically, the number of the outer cores 13 is the same as that of the first areas S1, and the number of the outer cores 13 and that of the first areas S1 can be adjusted according to actual requirements. A second area S2 is formed between two adjacent first areas S1. A portion where the first area S1 and the flow channel 151 overlap is a third area S3, and a portion where the second area S2 and the flow channel 151 overlap is a fourth area S4. In the present embodiment, the third area S3 extends in the axial direction of the electromagnetic pump 100 to divide the flow channel 151 into the first region, and the fourth area S4 extends in the axial direction of the electromagnetic pump 100 to divide the flow channel 151 into the second region.

During the operation of the electromagnetic pump 100, the magnetic lines of force of the magnetic field generated by electromagnetic induction substantially completely pass through the first region when entering the inner core 14 from the outer core 13, or when the inner core 14 enters the outer core 13. At this time, the magnetic induction intensity of the first region is larger than that of the second region. Thus, the liquid metal in the first region moves in a first direction and at a faster flow rate, and the liquid metal in the second region moves in a second direction and at a slower flow rate. Wherein the first direction and the second direction are substantially along a radius of the first circle, and the first direction and the second direction are substantially opposite. According to the principle of continuity of the fluid, the liquid metal moving in the first direction forms a circular flow and meets the liquid metal moving in the second direction, thereby greatly reducing the flow rate and efficiency of the electromagnetic pump 100.

As shown in fig. 2, in the present embodiment, the pump channel mechanism 15 further includes a plurality of chambering structures 154. The sub-cavity structure 154 is at least partially disposed between the first pump groove wall 1521 and the second pump groove wall 1522, one end of the sub-cavity structure 154 is connected to or abutted against the first pump groove wall 1521, the other end of the sub-cavity structure 154 is connected to or abutted against the second pump groove wall 1522, and the other end of the sub-cavity structure 154 can also be connected to the inner core 14. The cavity dividing structure 154 is used for dividing the flow channel 151 into a plurality of channels, and is used for supporting the first pump groove wall 1521 and the second pump groove wall 1522, so as to maintain the stability of the flow channel 151, and further facilitate the improvement of the stability of the electromagnetic pump 100. The number of the cavity dividing structures 154 is the same as that of the outer iron cores 13. Specifically, the cross-sectional area of the chambering structure 154 is equal to or greater than the fourth area, and the cross-section of the chambering structure 154 substantially completely covers the fourth area. With the above arrangement, the cavity-dividing structure 154 can block the movement of the liquid metal moving in the second direction, so as to reduce the circulation of the liquid metal in the pump channel mechanism 15, thereby improving the flow rate and efficiency of the electromagnetic pump 100. The sub-cavity structure 154 has good conductivity, corrosion resistance and high temperature resistance, for example, a molybdenum alloy may be used for the sub-cavity structure 154, so as to improve the corrosion resistance and strength. The good high temperature resistance of the sub-cavity structure 154 means that the volume change of the sub-cavity structure 154 is less than or equal to 1% at a temperature of 500 ℃; the good corrosion resistance of the sub-chamber structure 154 means that the mass change of the sub-chamber structure 154 is 0.05% or less in the case where the electromagnetic pump 100 continuously operates for thirty days.

As shown in fig. 3, 4, and 5, as one implementation, chambered structure 154 includes a first chambered piece 1541 and/or a second chambered piece 1542 and/or a third chambered piece 1543. First cavity divider 1541 is disposed between first pump channel wall 1521 and second pump channel wall 1522, with one end of first cavity divider 1541 connecting or abutting first pump channel wall 1521 and the other end of first cavity divider 1541 connecting or abutting second pump channel wall 1522. Second cavity divider 1542 is disposed between first pump channel wall 1521 and second pump channel wall 1522, with one end of second cavity divider 1542 connecting or abutting first pump channel wall 1521 and the other end of second cavity divider 1542 connecting or abutting second pump channel wall 1522. Third cavity divider 1543 is disposed between first pump channel wall 1521 and second pump channel wall 1522, with one end of third cavity divider 1543 connecting or abutting first pump channel wall 1521 and the other end of third cavity divider 1543 connecting or abutting second pump channel wall 1522. Specifically, the cross-section of first cavity divider 1541 is a first cross-section that is substantially trapezoidal in shape, with the longer base of the first cross-section connecting or abutting first pump channel wall 1521 and the shorter base of the first cross-section connecting or abutting second pump channel wall 1522. The cross-section of second cavity divider 1542 is a second cross-section that is substantially rectangular in shape. The cross section of the third cavity divider 1543 is a third cross section, which is formed by splicing two second trapezoids, the shorter bases of the two second trapezoids are spliced, the longer base of one second trapezium is connected or abutted to the first pump gallery wall 1521, and the longer base of the other second trapezium is connected or abutted to the second pump gallery wall 1522.

In this embodiment, since the first pump channel wall 1521 and the second pump channel wall 1522 are both arc-shaped surfaces, the bottom side of the first cross section, which is longer, is also arc-shaped and has an arc length of

The base side of the first cross section with a shorter length is also arc-shaped and has an arc length of

(ii) a The second cross-sectional connecting pump channel wall 152 also has an arc-shaped side length and an arc length of

(ii) a The longer base of the third cross section is also arc-shaped and has an arc length of

The shorter bottom side of the third cross section is a straight side and has a length of

. Since the width of the flow channel 151 is h, the height of the first cross-section is also substantially h, the height of the second cross-section is also substantially h, and the height of the third cross-section is also substantially h. The angles formed by the two sides of the trapezoid of the first cross section and the third cross section and the height of the trapezoid are

And is and

. Where n is the number of chambered structures 154. The number of the cavity dividing structures 154 is the same as that of the outer iron cores 13.

In particular, the method comprises the following steps of,

、

and

the following requirements need to be met:

as one implementation, the inner core 14 may be the first inner core 141 or the second inner core 142 or the third inner core 143.

As shown in fig. 6, as one implementation, the first inner core 141 includes a first central cylinder 1411, a plurality of core sectors 1412, and a plurality of wedge bars 1413. The center of the first central cylinder 1411 is the center of the first inner core 141, and the axis of the first central cylinder 1411 substantially coincides with the axis of the electromagnetic pump. A plurality of core sectors 1412 are disposed at least partially around the first central cylinder 1411, the core sectors 1412 being substantially along a first radius

The direction is extended. The plurality of iron core sectorial regions 1412 are spliced to form a substantially closed cylindrical structure with the first central cylinder 1411. Specifically, the number of outer cores 13 and the first radius

The number of the core segments 1412 and the number of the wedge strips 1413 are consistent. The number of outer cores 13 and the first radius

The number of the wedge strips 1413 can be adjusted according to actual requirements, that is, the number of the iron core sectorial partitions 1412 and the number of the wedge strips 1413 can also be adjusted according to actual requirements. Two adjacent first radiuses

The angle therebetween is 360/n, i.e., the arc of the core sectorization 1412 is 360/n. Where n is the number of the core sectors 1412, thereby facilitating splicing between two adjacent core sectors 1412. In the present embodiment, the core segment 1412 is substantially in a shape of a sector ring, and the extension direction of the core segment 1412 is a first radius

In the direction, the two ends of each iron core sectorial region 1412 near the second protection layer 1532 are formed with the firstA notch 1414, and the first notch 1414 of two adjacent iron core sectorial sections 1412 forms a second notch 1415. The cross section of the cylindrical space formed by the outer iron cores 13 is the first circle. The first circle has a second radius

With the chambered structure 154 substantially about the second radius

Symmetrically disposed, the second notch 1415 substantially about the second radius

Are symmetrically arranged. In this embodiment, the second indentation 1415 is substantially triangular or scalloped or otherwise shaped in cross-section. Specifically, first notches 1414 are arranged at the intersections of the outer arc surfaces of the iron core sectorial regions 1412 and the two side surfaces of the iron core sectorial regions 1412, and after the two adjacent iron core sectorial regions 1412 are spliced, the two first notches 1414 form a second notch 1415. The outer arc surface of the core segment 1412 refers to the surface of the core segment 1412 near the second protective layer 1532.

As one implementation, the gibs 1413 are disposed at least partially between two adjacent core sectors 1412. Specifically, the wedge strip 1413 is arranged in the second notch 1415, and the shape of the cross section of the wedge strip 1413 is substantially identical to the shape of the cross section of the second notch 1415, that is, on a projection plane perpendicular to the axial direction of the electromagnetic pump 100, a projection of the wedge strip 1413 on the projection plane along the axial direction of the electromagnetic pump 100 is a first projection plane, a projection of the second notch 1415 on the projection plane along the axial direction of the electromagnetic pump 100 is a second projection plane, and the first projection plane and the second projection plane are substantially coincident. In this embodiment, the cross-section of the wedge strips 1413 is also substantially triangular or fan-shaped or other shapes, and the wedge strips 1413 are made of non-magnetic stainless steel. The chambering structure 154 divides the flow channel 151 into a plurality of channels, each channel having a substantially circular cross-section with an arc of the chamber cross-section. With the above arrangement, the pole arc can be made larger than the cavity arc, thereby reducing the circulation of the liquid metal in the pump gutter mechanism 15 and improving the flow rate and efficiency of the electromagnetic pump 100.

As one implementation manner, the core sectorization 1412 includes a plurality of first lamination sheets 1412a, the number m of the first lamination sheets 1412a of each core sectorization 1412 can be adjusted according to actual requirements, and the width w of each first lamination sheet 1412a is substantially consistent. Wherein the first laminations 1412a are substantially along a first radius

Extending in a direction where the width w of the first lamination 1412a is perpendicular to the first radius

Width in the direction. In particular, the method comprises the following steps of,

where n is the number of core sectors 1412 and r is the radius of the first inner core 141. In the present embodiment, the first lamination 1412a is a cold-rolled grain-oriented silicon steel sheet, and the width w of the first lamination 1412a conforms to the thickness specification of the existing silicon steel sheet. With the above arrangement, since it is possible to control the width w of each of the first laminations 1412a, there is a very flexible adjustment space for the size of the wedge strip 1413. The wedge strips 1413, in cooperation with the outer core 13 and the cavity dividing structure 154, ensure a maximum pole arc, which is greater than the cavity arc, thereby reducing the circulating current of the liquid metal in the pump groove mechanism 15 and improving the flow rate and efficiency of the electromagnetic pump 100. In addition, the first inner core 141 is configured by a plurality of first lamination sheets 1412a, and a circumferential circulation of the first inner core 141 is reduced by increasing a contact resistance.

As one implementation manner, the method for processing the iron core sectorial partition 1412 includes the following steps:

s1: selecting a plurality of first laminations 1412a with the same height, the same width and different lengths;

s2: arranging a plurality of first laminations 1412a and fixedly connecting two adjacent first laminations 1412a to form an iron core sector division 1412 with a sector-shaped cross section;

s3: splicing a plurality of iron core sectorial partitions 1412 into a circular ring body, wherein a second notch 1415 is formed at the splicing position of two adjacent iron core sectorial partitions 1412;

s4: a wedge strip 1413 is disposed in the second gap 1415 such that the wedge strip 1413, the plurality of core sectors 1412, and the first central cylinder 1411 cooperate to form a first inner core 141 having a circular cross-section.

In step S1, the height of the first lamination 1412a refers to the length in the axial direction of the electromagnetic pump 100, and the width of the first lamination 1412a refers to the perpendicular to the first radius

Length in the direction, the length of the first lamination 1412a is parallel to the first radius

Length in the direction. In step S2, the arrangement of the first laminations 1412a is as follows: near the first radius

Has a maximum length away from the first radius

The length of the first lamination 1412a is the smallest. Through the arrangement, the cross section of the iron core sectorial partition 1412 is basically in a sector shape, so that the splicing between two adjacent iron core sectorial partitions 1412 is facilitated. Wherein, the connection mode between the first lamination sheets 1412a can be through glue bonding. In addition, the boundaries of the core segments 1412 formed in step S2 are filed, so that the boundaries of the core segments 1412 are made smoother, which is advantageous for splicing the core segments 1412. The angle β =360/n corresponding to the radian of the cross section of the fan ring is n, which is the number of the iron core sectorial divisions 1412.

In step S3, the core segments 1412 are bonded by glue. In step S4, the wedge strip 1413 and the second notch 1415 are bonded by glue, that is, the iron core sectorial region 1412 and the wedge strip 1413 are bonded by glue, and the iron core sectorial region 1412 and the first central cylinder 1411 are also bonded by glue.

Specifically, the processing method of the iron core sectorial partition 1412 further includes:

s5: a second protective layer 1532 is disposed outside the first inner core 141 to fix the first inner core 141;

s6: the flow channel 151 and the pump groove wall 152 are provided outside the second protective layer 1532; and divides the flow channel 151 into n channels by the sub-chamber structure 154;

s7: a first protective layer 1531 is disposed outside the pump trench wall 152;

s8: the pump groove mechanism 15 is connected to the first inner core 141.

In step S5, the second protective layer 1532 is made of carbon fiber, and the second protective layer 1532 is polished to make the surface of the second protective layer 1532 smooth. In step S6, the pump channel wall 152 is made of a ceramic material. The pump channel wall 152 includes a first pump channel wall 1521 and a second pump channel wall 1522, and the first pump channel wall 1521 and the second pump channel wall 1522 form the flow channel 151 therebetween. The cavity dividing structure 154 is disposed between the first pump trench wall 1521 and the second pump trench wall 1522, and connects the first pump trench wall 1521 and the second pump trench wall 1522, respectively. In addition, the pump groove walls 152 at both sides of the circulation passage 151 need to be ground to make the surfaces of the pump groove walls 152 smooth and uniform, thereby facilitating the flow of the liquid metal. In step S7, the first protective layer 1531 is made of carbon fiber, and the first protective layer 1531 is polished to make the surface of the first protective layer 1531 smooth. In step S8, the pump groove mechanism 15 is heated, that is, the pump groove wall 152 and the protective layer 153 are heated, and the pump groove mechanism 15 is thermally expanded. Under high temperature state, with pump ditch mechanism 15 around first interior iron core 141 setting, realize that pump ditch mechanism 15 and first interior iron core 141's interference fit are connected to make pump ditch mechanism 15 and first interior iron core 141's assembly more stable, and then improve electromagnetic pump 100's stability.

Through the arrangement, the center of a circle of the protective layer 153, the center of a circle of the first inner iron core 141, the center of a circle of the first central cylinder 1411 and the center of a circle of the pump groove wall 152 can be basically coincided, so that the concentricity of the electromagnetic pump 100 is realized, the possibility of unilateral magnetic pressure can be effectively reduced, and the stability of the electromagnetic pump 100 is further improved.

As shown in fig. 7, the second inner iron core 142 includes a second central cylinder 1421 and a plurality of first iron cores 1422, as one implementation. A plurality of first cores 1422 are disposed around the second central cylinder 1421, and the plurality of first cores 1422 are connected to the second central cylinder 1421. The first cores 1422 are disposed in a rib shape. A number of first cores 1422 are disposed at least partially between the second protective layer 1532 and the second central cylinder 1421. Specifically, the end face of the one end that second center cylinder 1421 is connected to a plurality of first iron core 1422 is the cambered surface, and the end face of the one end that second center cylinder 1421 is connected to a plurality of first iron core 1422 forms first cylinder space, and second center cylinder 1421 at least part sets up in first cylinder space to be convenient for the stable connection of a plurality of first iron core 1422 and second center cylinder 1421. The end surfaces of the ends of the first iron cores 1422 close to the second protective layer 1532 are all first arc surfaces, and the radius of the first arc surfaces is substantially the same as that of the second protective layer 1532, so that the connection or the butt joint between the first iron cores 1422 and the second protective layer 1532 is more stable. Through the above arrangement, the second inner iron core 142 can be made into a block shape through the plurality of first iron cores 1422, so that the magnetic field in the pump trough mechanism 15 and the output of the electromagnetic pump 100 are not affected, the eddy current can be effectively inhibited, the loss and the temperature rise of the electromagnetic pump 100 during operation are reduced, and the efficiency and the service life of the electromagnetic pump 100 are further improved. In addition, when the first core 1422 is formed in a rib structure, the eddy current distribution is not annular any more, but a small eddy current is formed on each rib section, thereby blocking the eddy current circumferential path and reducing the eddy current loss.

In this embodiment, the number of the first cores 1422 may be adjusted according to actual requirements, and a ratio between the number of the outer cores 13 and the number of the first cores 1422 may be 1, that is, the number of the outer cores 13 is the same as the number of the first cores 1422.

As shown in fig. 8, the third inner core 143 includes a third central cylinder 1431, a plurality of second cores 1432, and a plurality of fixing structures 1433, as one implementation. A plurality of second cores 1432 are disposed around the third central cylinder 1431, a plurality of securing structures 1433 are disposed around the third central cylinder 1431, and the second cores 1432 are connected to the third central cylinder 1431 by the securing structures 1433. The plurality of second cores 1432 are arranged in a rib-like manner, and the plurality of securing structures 1433 are arranged in a rib-like manner. A number of second cores 1432 are at least partially disposed between the second protective layer 1532 and the fixation structure 1433. Specifically, the number of second cores 1432 is consistent with the number of fixation structures 1433. The fixation feature 1433 is at least partially disposed between the second core 1432 and the third central cylinder 1431, with one end of the fixation feature 1433 coupled to the second core 1432 and the other end of the fixation feature 1433 coupled to the third central cylinder 1431. Specifically, the end surfaces of the fixing structures 1433 close to one end of the third central cylinder 1431 are both arc surfaces, the end surfaces of the fixing structures 1433 close to one end of the third central cylinder 1431 form a second cylinder space, and the third central cylinder 1431 is at least partially disposed in the second cylinder space, so that the fixing structures 1433 and the third central cylinder 1431 can be stably connected. The end surfaces of the ends of the second cores 1432 close to the fixing structures 1433 are all second arc surfaces, and the end surfaces of the ends of the second cores 1433 close to the second cores 1432 are all third arc surfaces. The radius of the second arc is substantially the same as the radius of the third arc to facilitate a stable connection of the second core 1432 and the fixture 1433. The end surfaces of the ends of the second cores 1432 close to the second protective layer 1532 are all fourth arc surfaces, and the radius of the fourth arc surfaces is substantially consistent with the radius of the second protective layer 1532, so that the connection or the abutment between the second cores 1432 and the second protective layer 1532 is more stable. Through the arrangement, the second iron core 1432 and the fixing structure 1433 can form a rib structure, so that the magnetic field in the pump groove mechanism 15 and the output of the electromagnetic pump 100 are not influenced, the eddy current can be effectively inhibited, the loss and the temperature rise of the electromagnetic pump 100 during working are reduced, and the efficiency and the service life of the electromagnetic pump 100 are further improved. In addition, when the second core 1432 and the fixing structure 1433 are formed in a rib structure, the eddy current distribution is not circular but a small eddy current is formed on each rib section, thereby blocking an eddy current circumferential path and reducing eddy current loss.

In this embodiment, the number of the second cores 1432 may be adjusted according to actual requirements, the number of the fixing structures 1433 may also be adjusted according to actual requirements, and a ratio between the number of the outer cores 13 and the number of the second cores 1432 may be 1, that is, the number of the outer cores 13 is consistent with the number of the second cores 1432.

As one implementation, pump body 11 may be housing 112 or outer rib assembly 113.

As shown in fig. 9 to 11, as one implementation, the housing 112 includes a first housing 1121 and a second housing 1122. The second housing 1122 is at least partially disposed around the plurality of outer cores 13, i.e., the plurality of outer cores 13 are at least partially disposed in the second housing 1122. The first housing 1121 is disposed around the second housing 1122. The second housing 1122 is used for wrapping a plurality of outer cores 13, thereby fixing the plurality of outer cores 13. Specifically, the second housing 1122 is further provided with a cooling mechanism 1123. The cooling mechanism 1123 is used for cooling the electromagnetic pump 100. Specifically, the cooling mechanism 1123 may include a first cooling water channel 1123a and/or a second cooling water channel 1123b and/or a third cooling water channel 1123c for improving the cooling effect of the cooling mechanism 1123, and thus improving the heat dissipation effect and the service life of the electromagnetic pump 100.

As shown in fig. 9, the first cooling water channel 1123a includes a plurality of first water channels 1123d and a plurality of first connection water channels 1123 e. The first water passage 1123d is provided around the second housing 1122, that is, the first water passage 1123d is provided along the circumferential direction of the second housing 1122. The first connecting water passage 1123e is arranged substantially in the axial direction of the second housing 1122. A first connecting water channel 1123e is arranged between two adjacent first water channels 1123d, one end of the first connecting water channel 1123e is connected with one first water channel 1123d, and the other end of the first connecting water channel 1123e is connected with the adjacent first water channel 1123d, so that the two adjacent first water channels 1123d are communicated, and the circulation of the cooling liquid is realized. Specifically, the first housing 1121 is disposed around the second housing 1122, so that a closed circulation channel is formed between the first housing 1121 and the first cooling channel 1123a, and thus the cooling liquid can flow in the first cooling channel 1123a without leaking, thereby improving the sealing performance and the cooling effect of the electromagnetic pump 100.

As shown in fig. 10, as one implementation, the second cooling water channel 1123b includes a plurality of second water channels 1123f and a plurality of second connecting water channels 1123 g. The second water passage 1123f is arranged in the axial direction of the second housing 1122, i.e., the second water passage 1123f is substantially parallel to the axis of the second housing 1122. The second connecting water passage 1123g is arranged substantially along the circumferential direction of the second housing 1122. A second connecting water channel 1123g is arranged between two adjacent second water channels 1123f, one end of the second connecting water channel 1123g is connected with one second water channel 1123f, and the other end of the second connecting water channel 1123g is connected with the adjacent second water channel 1123f, so that the two adjacent second water channels 1123f are communicated, and the circulation of the cooling liquid is realized. Specifically, the first housing 1121 is disposed around the second housing 1122, so that a closed circulation channel is formed between the first housing 1121 and the second cooling channel 1123b, and thus the cooling liquid can flow in the second cooling channel 1123b without leaking, thereby improving the sealing performance and the cooling effect of the electromagnetic pump 100.

As shown in fig. 11, as one implementation, the third cooling watercourse 1123c includes a third watercourse 1123 h. The third water passage 1123h is substantially spirally arranged along the circumferential direction of the second housing 1122, i.e., the third water passage 1123h is substantially threaded and is arranged on the second housing 1122. Specifically, the first housing 1121 is disposed around the second housing 1122, so that a closed circulation channel is formed between the first housing 1121 and the third cooling channel 1123c, and thus the cooling liquid can flow in the third cooling channel 1123c without leaking, thereby improving the sealing performance and the cooling effect of the electromagnetic pump 100.

As shown in fig. 12, as one implementation, the outer rib assembly 113 is disposed outside the plurality of outer cores 13, and is used for fixing the plurality of outer cores 13. Specifically, the outer rib assembly 113 includes a plurality of annular ribs 1131. The plurality of annular ribs 1131 form accommodating spaces. A plurality of outer cores 13 are at least partially disposed in the receiving space. The plurality of annular ribs 1131 are arranged along the axial direction of the electromagnetic pump 100, and the arrangement manner of the plurality of annular ribs 1131 may be uniform or non-uniform. That is, the distance between two adjacent annular ribs 1131 may be uniform or nonuniform along the axial direction of the electromagnetic pump 100. In this embodiment, the number of the annular ribs 1131 may be adjusted according to the axial length of the electromagnetic pump 100, or may be continuously adjusted according to actual requirements.

As one implementation, when pump body 11 is housing 112, pump body 11 also includes a first end cap 1124, as shown in FIG. 13. The first end covers 1124 are provided at both ends of the housing 112. Specifically, the two ends of the housing 112 are provided with connecting portions 1125, and the connecting portions 1125 are arranged around the circumference of the housing 112. The housing 112 and the first end cover 1124 are connected by a connecting portion 1125. The first end cover 1124 has a first through hole, and the first through hole is disposed on the pump channel mechanism 15, i.e. the first through hole is disposed around the pump channel mechanism 15. Specifically, the diameter of the first through hole is substantially identical to the diameter of the first protective layer 1531, thereby facilitating stable connection of the first end cap 1124 and the pump channel mechanism 15. In the present embodiment, the connection portions 1125 may be provided at both ends of the first housing 1121 and/or the second housing 1122.

The outer surface of the first shell 1121 is provided with a plurality of reinforcing ribs 1121a, and the reinforcing ribs 1121a are used for reinforcing the rigidity and strength of the shell 112. The plurality of ribs 1121a may be uniformly distributed on the first housing 1121, thereby enhancing the rigidity and strength of the first housing 1121 as a whole. The plurality of reinforcing ribs 1121a may also be intensively distributed on the first shell 1121, so as to enhance the local rigidity and strength of the first shell 1121, and further avoid the damage caused by the local excessive force applied to the first shell 1121. Specifically, the reinforcing ribs 1121a may be made of a stainless steel material, and the number of the reinforcing ribs 1121a may be adjusted according to actual requirements. In this embodiment, the inner radius of the rib 1121a is equal to the outer radius of the first shell 1121, and the outer radius of the rib 1121a can be adjusted according to actual requirements. The inner radius of the rib 1121a refers to a distance from a surface of the rib 1121a close to the first housing 1121a to a center of the circle, the outer radius of the rib 1121a refers to a distance from a surface of the rib 1121a far away from the center of the first housing 1121, and the outer radius of the first housing 1121 refers to a distance from a surface of the housing 112 close to the rib 1121a to the center of the circle. With the above arrangement, the structure of the housing 112 can be made more stable, thereby improving the structural stability of the electromagnetic pump 100.

In the present embodiment, the connection portion 1125 is provided with a first mounting hole 1125a, and the first end cover 1124 is provided with a second mounting hole 1124 b. The first and second mounting

holes

1125a and 1124b are coupled by bolts, so that the first end cover 1124 and the coupling portion 1125 are stably coupled, and the first end cover 1124 and the housing 112 are stably coupled. The housing 112 may be made of stainless steel, and the first end cap 1124 may be made of stainless steel. The cross-sectional shape of the first end cap 1124 may be circular or square. It will be appreciated that the cross-sectional shape of the first end cap 1124 may be other shapes, and may be modified as desired.

In the present embodiment, the plurality of outer cores 13 and the housing 112 are integrally formed, the connecting portion 1125 and the outer cores 13 are integrally formed, and the reinforcing rib 1121a and the housing 112 are integrally formed. At this time, the housing 112, the outer core 13, and the winding 12 are integrally formed, and the housing 112, the outer core 13, and the winding 12 may be immersed in an insulating varnish during a production process, thereby improving safety of the electromagnetic pump 100.

In the present embodiment, the plurality of outer cores 13 and the housing 112 may be connected by welding, and the connection portion 1125 and the outer core 13 may be connected by welding. Through the above arrangement, the cross section of the cylindrical space formed by the plurality of outer iron cores 13 can be made, namely, the center of a circle of the first circular shape is basically coincided with the center of a circle of the shell 112, so that the concentricity of the electromagnetic pump 100 is realized, the possibility of the unilateral magnetic pressure can be effectively reduced, the stability of the electromagnetic pump 100 is further improved, and the flow and the efficiency of the electromagnetic pump 100 are favorably improved.

As shown in fig. 17, as one implementation, the inner core 14 is further provided with second end caps 114 at both ends, and the second end caps 114 are used for sealing the inner core 14 to separate the inner core 14 from the liquid metal in the circulation passage 151, even if the inner core 14 and the liquid metal are not in contact. In addition, the second end cap 114 may be formed with a first channel for the liquid metal to flow through, so that the liquid metal may flow out of the electromagnetic pump 100 along the first channel when flowing out of the flow channel 151; so that the liquid metal can flow into the electromagnetic pump 100 along the first passage when flowing from the flow passage 151. Through the arrangement, the flow of the liquid metal can be facilitated, so that the flow rate and the efficiency of the electromagnetic pump 100 are improved.

As one implementation, the central cylinders include a first central cylinder 1411 or a second central cylinder 1421 or a third central cylinder 1431. The central cylinder includes at least a first state or a second state or a third state.

In the first state, the central cylinder may be disposed inside the second end cap 114. The inner side of the second end cap 114 refers to a side of the second end cap 114 near the core sectorization 1412.

As shown in fig. 13, in the second state, the central cylinder may pass through the second end cover 114 and be at least partially disposed outside the second end cover 114, the pump channel mechanism 15 extends to between the second end cover 114 and the central cylinder in the axial direction of the electromagnetic pump 100, that is, in the axial direction of the electromagnetic pump 100, the length of the pump channel mechanism 15 is greater than the length of the inner core 14, and the length of the pump channel mechanism 15 is smaller than the length of the central cylinder. Wherein, the outer side of the second end cap 114 refers to the side of the second end cap 114 away from the inner core 14. Specifically, the first pump groove wall 1521 extends between the second end cap 114 and the central cylinder in the axial direction of the electromagnetic pump 100, and the second protective layer 1532 extends between the second end cap 114 and the central cylinder in the axial direction of the electromagnetic pump 100. Neither the second pump channel wall 1522 nor the second protective layer 1532 extends in the axial direction of the electromagnetic pump 100. The second pump channel wall 1522 is coupled to the second end cap 114 to effect a seal of the second end cap 114 against the inner core 14.

Specifically, in the second state, the pump body 11 further includes a connection mechanism 115 and a first outer pipe 116. The connection mechanism 115 is connected to the first end cap 1124, and the first outer pipe 116 is connected to the connection mechanism 115, thereby connecting the first end cap 1124 and the first outer pipe 116 via the connection mechanism 115. At this time, when the liquid metal flows out of the flow channel 151, the liquid metal flows into the first outer pipe 116 through the connection mechanism 115, so that the liquid metal flows out of the electromagnetic pump 100; when the liquid metal flows into the flow channel 151, the liquid metal flows out of the electromagnetic pump 100 to the connection mechanism 115 through the first outer pipe 116, and flows into the flow channel 151 through the connection mechanism 115. Wherein the connecting structure may be a flange.

As shown in fig. 14, in the third state, the first trench wall 1521 and the first protective layer 1531 extend in the axial direction of the electromagnetic pump 100, and the extension lengths of the first trench wall 1521 and the first protective layer 1531 are substantially the same. The second pump trench wall 1522 and the first protective layer 1531 do not extend. The axial length of the first pump groove wall 1521 is greater than the axial length of the second pump groove wall 1522, and the axial length of the first protective layer 1531 is greater than the axial length of the first protective layer 1531. Specifically, the first outer wall layer 155 is formed after extending the first pump trench wall 1521 and the first protection layer 1531. One end of the first outer wall layer 155, which is far away from the inner iron core 14, gradually gathers towards the axial direction of the electromagnetic pump 100 until a pipe port is formed at one end of the first outer wall layer 155, which is far away from the inner iron core 14. At this point, pump body 11 also includes a second outer conduit 117. The second outer tube 117 is connected to the tube port. As the liquid metal flows out of the flow channel 151, it flows through the first outer wall layer 155 into the second outer pipe 117, thereby flowing the liquid metal out of the electromagnetic pump 100; when the liquid metal flows in from the flow channel 151, the liquid metal flows out of the electromagnetic pump 100 into the first outer wall layer 155 through the second outer pipe 117, and flows into the flow channel 151 through the first outer wall layer 155.

As shown in fig. 8, 15 to 18, as one implementation, the outer core 13 includes a first outer core 131, a second outer core 132, or a third outer core 133.

As shown in fig. 8, as one implementation, a plurality of first outer cores 131 are disposed at least partially around the pump channel mechanism 15. Specifically, the first outer cores 131 are arranged in a rib shape, that is, a space is formed between adjacent first outer cores 131. The first outer iron cores 131 are distributed in an annular array around the first circular center of the circle, so that the eddy current can be reduced, and the flow rate and efficiency of the electromagnetic pump 100 can be improved.

As shown in fig. 15 and 16, as one implementation, a plurality of support structures 134 are disposed between a plurality of second outer cores 132. The number of support structures 134 corresponds to the number of second outer cores 132. That is, a support structure 134 is disposed between two adjacent second outer cores 132. The supporting structure 134 is used for supporting the plurality of second outer iron cores 132, so that the plurality of second outer iron cores 132 are not changed under the action of the magnetic pull force, and the strength and the stability of the electromagnetic pump 100 are improved. In particular, support structure 134 includes a first support 1341 and a second support 1342. Yokes of the plurality of second outer cores 132 are connected by a first support 1341, that is, yokes of two adjacent second outer cores 132 are connected by a first support 1341. The teeth of several second outer cores 132 are connected by second supports 1342, that is, the teeth of two adjacent second outer cores 132 are connected by one second support 1342. The yoke portion of the second outer core 132 and the tooth portion of the second outer core 132 are integrally molded. First support 1341 and second support 1342 may be integrally formed, and first support 1341 and second support 1342 may also be abutted or connected, that is, first support 1341 and second support 1342 are attached to each other. The yoke portions of the second outer cores 132 and the first supports 1341 form a first circular ring body with a circular cross section, and the center of the circular cross section of the first circular ring body substantially coincides with the center of the inner core 14. The teeth of the second outer cores 132 and the second supports 1342 form a second ring with a circular cross section, and the center of the circular cross section of the second ring substantially coincides with the center of the inner core 14. Namely, the axis of the first torus, the axis of the second torus and the axis of the electromagnetic pump 100 are substantially coincident. Through the arrangement, the concentricity of the electromagnetic pump 100 can be realized, the possibility of unilateral magnetic pressure can be effectively reduced, and the stability of the electromagnetic pump 100 is improved. In this embodiment, the first torus is arranged around the second torus, i.e. the second torus is arranged in the first torus. The first torus and the second torus substantially form a substantially closed torus. Both the first support 1341 and the second support 1342 can be made of stainless steel, so that the rigidity of the second outer iron core 132 is improved, and the rigidity of the electromagnetic pump 100 is further improved. The thicknesses of the first support 1341 and the second support 1342 may be a first thickness, and the first thickness may be adjusted according to actual requirements, so that the arrangement space of the winding 12 on the second outer core 132 may be ensured. Wherein the first thickness refers to the length of the first support 1341 and the second support 1342 in the axial direction of the electromagnetic pump 100. Through the arrangement, the plurality of second outer iron cores 132 can form a whole through the supporting structure 134, so that the heat dissipation area of the second outer iron cores 132 is increased, and the heat dissipation effect of the second outer iron cores 132 is improved. In addition, through the above arrangement, the problem of heat generation due to loss can be favorably alleviated, so that the heat dissipation effect of the electromagnetic pump 100 is improved.

In this embodiment, support structure 134 also includes a third support 1343. A third support 1343 is provided between two adjacent tooth portions of the plurality of second outer cores 132 in the axial direction of the solenoid pump 100. The thickness of the third support 1343 is a second thickness, which can be adjusted according to actual requirements. During the operation of the solenoid pump 100, an axial force may be generated, which may cause the teeth of the second outer iron cores 132 to deform, thereby shortening the service life of the solenoid pump 100 and reducing the safety of the solenoid pump 100. The third supports 1343 may be used to support the teeth of the plurality of second outer cores 132, so as to reduce the influence of the axial force on the teeth of the plurality of second outer cores 132, thereby improving the service life and safety of the electromagnetic pump 100. That is, the third support 1343 serves to offset the axial force received by the teeth of the several second outer cores 132. The third support 1343 may also be made of stainless steel, so as to improve the rigidity of the second outer core 132 and further improve the rigidity of the electromagnetic pump 100.

As shown in fig. 17 and 18, as one implementation, the number of the third outer cores 133 is several, and each of the third outer cores 133 includes a yoke ring 1331 and a toothed yoke ring 1332. The yoke rings 1331 and the toothed yoke rings 1332 are stacked, that is, a toothed yoke ring 1332 is disposed between two adjacent yoke rings 1331, and a yoke ring 1331 is disposed between two adjacent toothed yoke rings 1332. Specifically, the yoke ring 1332 includes a plurality of second laminations 1332a, that is, the plurality of second laminations 1332a are stacked to form the yoke ring 1332. The adjacent second lamination 1332a may be fixed by gluing or other fixing methods. The second lamination 1332a may be made of a silicon steel sheet, and the yoke ring 1331 may be made of a silicon steel material. In the present embodiment, the yoke ring 1331 is substantially a torus, and the yoke ring 1332 is also substantially a torus. The outside diameter of the toothed yoke ring 1332 is substantially the same as the outside diameter of the yoke ring 1331. The inside diameter of the yoke ring 1332 is smaller than that of the yoke ring 1331, so that the yoke ring 1332 forms a space for placing the windings 12, thereby facilitating the arrangement of the windings 12.

In the present embodiment, since the magnetic path is mostly axial when the magnetic flux passes through the yoke ring 1331 portion, if it is formed in the form of axial lamination, the magnetic resistance in the axial direction is increased, and therefore, the yoke ring 1331 has an integral structure, which is advantageous for reducing the magnetic resistance of the magnetic flux when the magnetic flux passes through the yoke portion of the third outer core 133, and for distributing the magnetic field. The magnetic flux is substantially in the radial direction in the magnetic path of the yoke ring 1332, so that the use of the second lamination 1332a in the axial direction in the yoke ring 1332 does not have an excessive effect on the radial reluctance. In addition, through the above arrangement, the eddy current can flow in the circumferential direction only on one of the second lamination pieces 1332a, and the amount of current flowing in the circumferential direction is reduced.

In the present embodiment, the third outer core 133 further includes a blocking layer 1333. The partition layer 1333 extends substantially in the axial direction of the electromagnetic pump 100. In particular, the blocking layer 1333 is at least partially disposed in the toothed yoke ring 1332 and at least partially disposed in the yoke ring 1331. When the blocking layer 1333 is at least partially disposed in the yoke ring gear 1332, the length of the blocking layer 1333 in the radial direction of the electromagnetic pump 100 is a first length, and the length of the yoke ring gear 1332 in the radial direction of the electromagnetic pump 100 is a second length, and the first length and the second length are substantially the same. When the blocking layer 1333 is at least partially disposed in the yoke ring 1331, the length of the blocking layer 1333 in the radial direction of the electromagnetic pump 100 is a third length, and the length of the yoke ring 1331 in the radial direction of the electromagnetic pump 100 is a fourth length, the third length and the fourth length being substantially the same. The partition layer 1333 may be made of a magnetic conductive and non-conductive material, i.e., an insulating magnetic conductive material, such as ferrite, so as to reduce the size of the circumferential eddy current, and ensure circumferential uniformity of the magnetic field, so that the fluid does not have a circulating current phenomenon.

As shown in fig. 19 to 21, as one implementation, the electromagnetic pump 100 further includes a support member 16, and the support member 16 is used for supporting the pump groove wall 152 or the protective layer 153, so as to improve the stability of the flow channel 151. Wherein the support member 16 may be made of a ceramic material. One end of the support member 16 is attached to or abuts the central cylinder and the other end of the support member 16 is attached to or abuts the pump channel wall 152 or the protective layer 153. The support member 16 is disposed substantially around the central cylinder and the support member 16 is substantially rib-shaped. Through the above arrangement, the supporting component 16 can be directly fixedly connected or abutted on the central cylinder, and the supporting component 16 is connected or abutted on the pump groove wall 152 or the protective layer 153, so that the stress of the pump groove wall 152 or the protective layer 153 is reduced, the stability of the flow channel 151 is improved, and the stability of the electromagnetic pump 100 is further improved. It will be appreciated that the support member 16 may be integrally formed with the central cylinder, or may be connected to the central cylinder by other types of connections. The supporting component 16 can be fixedly connected to the pump groove wall 152 or the protective layer 153, or can be abutted against the pump groove wall 152 or the protective layer 153, only the supporting function of the supporting component 16 needs to be satisfied.

In the present embodiment, the support assembly 16 may be the first support 161, the second support 162, or the third support 163.

As shown in fig. 19, as one implementation, one end of the first support member 161 is connected to the central cylinder, and the other end of the first support member 161 sequentially passes through the second protective layer 1532 and the second pump channel wall 1522 and is connected to or abutted against the first pump channel wall 1521. The first support 161 is disposed substantially around the central cylinder, and the first support 161 is substantially rib-shaped. Through the above arrangement, the first supporting member 161 can be directly fixedly connected or abutted on the central cylinder, and the first supporting member 161 is connected or abutted on the first pump groove wall 1521, so that the stress of the second pump groove wall 1522 is reduced, the strength of the first pump groove wall 1521 is improved, the stability of the flow channel 151 is improved, and the stability of the electromagnetic pump 100 is further improved. It will be appreciated that the first support member 161 may be formed integrally with the central cylinder, or may be connected to the central cylinder by other types of connections. The first support 161 may be connected to the first pump groove wall 1521, or may abut against the first pump groove wall 1521.

Specifically, the number of the first supporting members 161 can be adjusted according to actual requirements. Specifically, the second protection layer 1532 is provided with a plurality of second through holes, and the plurality of second through holes are substantially disposed around the second protection layer 1532. A plurality of third through holes are formed in the second pump groove wall 1522, and the plurality of third through holes are arranged to substantially surround the second pump groove wall 1522. The number of the second through holes, the number of the third through holes, and the number of the first supports 161 are the same. The position of the second through hole is substantially the same as the position of the third through hole, so that the end of the first support member 161, which is far away from the central cylinder, passes through the second through hole and the third through hole and then is connected with or abutted against the first pump groove wall 1521. In the present embodiment, the first support 161 and the second through hole are in an interference fit, and the first support 161 and the third through hole are in an interference fit, so that the liquid metal in the flow channel 151 is prevented from leaking from the second through hole and/or the third through hole, and the safety of the electromagnetic pump 100 is improved. The first support 161 may be made of a ceramic material.

In this embodiment, the end face of the end of the first support member 161 connected to the central cylinder is an arc face, and the end face of the end of the first support member 161 connected to the central cylinder basically forms a cylinder space, so that the first support members 161 can be attached to the central cylinder more closely, and the stable connection between the first support member 161 and the central cylinder is improved. The terminal surface of the one end that first support piece 161 connects or the butt first pump ditch wall 1521 is the cambered surface, and the terminal surface of the one end that a plurality of first support piece 161 connects or the butt first pump ditch wall 1521 forms a cylinder space basically to it is inseparabler to make the first support piece 161 of a plurality of laminate with first pump ditch wall 1521, improves the stable connection or the butt of first support piece 161 and first pump ditch wall 1521, and then improves the supporting role of first support piece 161.

In the present embodiment, both the pump groove wall 152 and the protective layer 153 extend in the axial direction of the electromagnetic pump 100, and the extension lengths of the pump groove wall 152 and the protective layer 153 are substantially uniform. The second through holes are disposed at the extending position of the second protection layer 1532, the third through holes are disposed at the extending position of the second pump groove wall 1522, and the first supporting member 161 passes through the second through hole and the third through hole and then is connected to or abutted against the extending position of the first pump groove wall 1521.

It is understood that the pump groove wall 152 may extend in the axial direction of the electromagnetic pump 100, but the protective layer 153 may not extend in the axial direction of the electromagnetic pump 100. At this time, the second protection layer 1532 is not provided with a plurality of second through holes, a plurality of third through holes are provided at the extending position of the second pump groove wall 1522, and the first supporting member 161 passes through the third through holes and then is connected or abutted to the extending position of the first pump groove wall 1521.

It is understood that both pump groove wall 152 and first protective layer 1531 may extend in the axial direction of solenoid pump 100, and that pump groove wall 152 and first protective layer 1531 may extend substantially the same length, but second protective layer 1532 may not extend in the axial direction of solenoid pump 100. At this time, the second protection layer 1532 is not provided with a plurality of second through holes, a plurality of third through holes are provided at the extending position of the second pump groove wall 1522, and the first support member 161 passes through the third through hole and then is connected or abutted to the extending position of the first pump groove wall 1521.

It is understood that both the pump groove wall 152 and the second protective layer 1532 may extend in the axial direction of the solenoid pump 100, and the pump groove wall 152 and the second protective layer 1532 may extend substantially the same length, but the first protective layer 1531 may not extend in the axial direction of the solenoid pump 100. At this time, a plurality of second through holes are disposed at the extending position of the second protection layer 1532, a plurality of third through holes are disposed at the extending position of the second pump groove wall 1522, and the first supporting member 161 passes through the second through hole and the third through hole and then is connected or abutted to the extending position of the first pump groove wall 1521.

As shown in fig. 20, as one implementation, one end of the second support 162 is connected to the central cylinder, and the other end of the second support 162 is connected to or abutted against the second protective layer 1532. The second support member 162 is disposed substantially around the central cylinder, and the second support member 162 is substantially rib-shaped. Through the above arrangement, the second supporting member 162 can be directly fixed to or abutted against the central cylinder, and the second supporting member 162 is connected to or abutted against the second protection layer 1532, so that the stress on the second pump groove wall 1522 and the second protection layer 1532 is reduced, the strength of the second pump groove wall 1522 and the strength of the second protection layer 1532 are improved, the stability of the flow channel 151 is improved, and the stability of the electromagnetic pump 100 is improved. It will be appreciated that the second support member 162 may be integrally formed with the central cylinder, or may be connected to the central cylinder by other types of connections. The second support 162 may be connected to the second protective layer 1532, or may abut against the second protective layer 1532.

Specifically, the number of the second supporting members 162 can be adjusted according to actual requirements. Wherein, the second supporting member 162 may be made of a ceramic material.

In this embodiment, the end surface of the end of the second supporting member 162 connected to the central cylinder is an arc surface, and the end surface of the end of the second supporting member 162 connected to the central cylinder basically forms a cylinder space, so that the second supporting members 162 can be attached to the central cylinder more tightly, and the stable connection between the second supporting member 162 and the central cylinder is further improved. The end surface of the end of the second supporting member 162 connected to or abutted to the second protection layer 1532 is an arc surface, and the end surface of the end of the second supporting member 162 connected to or abutted to the second protection layer 1532 basically forms a cylindrical space, so that the second supporting member 162 can be attached to the second protection layer 1532 more tightly, the stable connection or abutment between the second supporting member 162 and the second protection layer 1532 is improved, and the supporting function of the second supporting member 162 is further improved.

In the present embodiment, both the pump groove wall 152 and the protective layer 153 extend in the axial direction of the electromagnetic pump 100, and the extension lengths of the pump groove wall 152 and the protective layer 153 are substantially uniform. The second support 162 is connected or abutted on an extension of the second protective layer 1532. Specifically, the second protection layer 1532 and the second pump groove wall 1522 both extend along the axial direction of the electromagnetic pump 100, and the extension lengths of the second protection layer 1532 and the second pump groove wall 1522 are substantially the same. The first protection layer 1531 and the first pump trench wall 1521 may both extend in the axial direction of the electromagnetic pump 100, and the first protection layer 1531, the first pump trench wall 1521, the second protection layer 1532, and the second pump trench wall 1522 may extend substantially uniformly. Or the first protection layer 1531 and the first pump trench wall 1521 extend substantially the same length, and the first protection layer 1531 extends less than the second protection layer 1532.

It is understood that the second protective layer 1532 and the second pump groove wall 1522 both extend in the axial direction of the electromagnetic pump 100, and the second protective layer 1532 and the second pump groove wall 1522 extend substantially the same length, but the first protective layer 1531 and the first pump groove wall 1521 may not extend in the axial direction of the electromagnetic pump 100.

It will be appreciated that the second protective layer 1532 and the pump trench walls 152 each extend in the axial direction of the electromagnetic pump 100, and that the second protective layer 1532 and the pump trench walls 152 extend substantially the same length, but that the first protective layer 1531 may not extend in the axial direction of the electromagnetic pump 100.

It will be appreciated that first protective layer 1531 and pump trench wall 152 both extend in the axial direction of solenoid pump 100, and that first protective layer 1531 and pump trench wall 152 extend substantially the same length, but second protective layer 1532 may not extend in the axial direction of solenoid pump 100. At this time, the second support 162 is connected or abutted on the extension of the second pump channel wall 1522.

It is understood that the pump channel wall 152 extends in the axial direction of the electromagnetic pump 100, but the protective layer 153 may not extend in the axial direction of the electromagnetic pump 100. At this time, the second support 162 is connected or abutted on the extension of the second pump channel wall 1522.

In summary, the second pump groove wall 1522 needs to extend along the axial direction of the electromagnetic pump 100, and the first pump groove wall 1521 and/or the first protection layer 1531 and/or the second protection layer 1532 may not extend along the axial direction of the electromagnetic pump 100. And when the second protection layer 1532 does not extend along the axial direction of the electromagnetic pump 100, the second support member 162 is connected to or abutted against the extension of the second pump groove wall 1522. When the second protective layer 1532 extends in the axial direction of the electromagnetic pump 100, the second support 162 is connected to or abuts on the extension of the second protective layer 1532.

As shown in fig. 21, as one implementation, one end of the third support 163 is connected to the central cylinder, and the other end of the third support 163 is connected to or abutted against the first pump groove wall 1521. The third support member 163 is disposed substantially around the central cylinder, and the third support member 163 is substantially rib-shaped. Through the above arrangement, the third supporting member 163 can be directly and fixedly connected or abutted to the central cylinder, and the third supporting member 163 is connected or abutted to the first pump groove wall 1521, so that the stress of the first pump groove wall 1521 and the first protection layer 1531 is reduced, the strength of the first pump groove wall 1521 and the strength of the first protection layer 1531 are improved, the stability of the circulation channel 151 is improved, and the stability of the electromagnetic pump 100 is improved. It will be appreciated that the third support 163 may be integrally formed with the central cylinder, or may be connected to the central cylinder by other types of connections. The third support 163 may be connected to the first pump groove wall 1521, or may abut against the first pump groove wall 1521.

Specifically, the number of the third supporting members 163 can be adjusted according to actual requirements. Wherein, the third supporting member 163 may adopt a ceramic material.

In this embodiment, the end face of the third support member 163 connected to one end of the central cylinder is an arc face, and the end face of the third support member 163 connected to one end of the central cylinder basically forms a cylindrical space, so that the third support members 163 can be attached to the central cylinder more tightly, and the stable connection between the third support members 163 and the central cylinder is further improved. The end face of one end of the third support member 163 connected or abutted to the first pump groove wall 1521 is an arc face, and the end face of one end of the third support member 163 connected or abutted to the first pump groove wall 1521 basically forms a cylindrical space, so that the third support members 163 can be attached to the first pump groove wall 1521 more tightly, the stable connection or abutment of the third support members 163 and the first pump groove wall 1521 is improved, and the supporting effect of the third support members 163 is further improved.

In this embodiment, the first trench wall 1521 and the first protective layer 1531 both extend in the axial direction of the electromagnetic pump 100, and the extension lengths of the first trench wall 1521 and the first protective layer 1531 are substantially the same. The third support 163 is connected or abuts on an extension of the first pump channel wall 1521.

It is understood that the first pump groove wall 1521 extends in the axial direction of the electromagnetic pump 100, and the first pump groove wall 1521 and/or the first protective layer 1531 and/or the second protective layer 1532 may not extend in the axial direction of the electromagnetic pump 100.

As one implementation, when the outer core 13 includes the first outer core 131 or the second outer core 132, the pump channel mechanism 15 includes a cavity dividing structure 154; that is, when the outer core 13 includes the first outer core 131 or the second outer core 132, the cavity-dividing structure 154 is provided between the first pump groove wall 1521 and the second pump groove wall 1522. When the outer core 13 includes the third outer core 133, the pump channel mechanism 15 may include the cavity dividing structure 154, and the pump channel mechanism 15 may not include the cavity dividing structure 154; that is, when the outer core 13 includes the third outer core 133, the cavity dividing structure 154 may be disposed between the first pump groove wall 1521 and the second pump groove wall 1522, or the cavity dividing structure 154 may not be disposed between the first pump groove wall 1521 and the second pump groove wall 1522.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.

Claims

1. An electromagnetic pump comprising:

a pump body formed with an accommodation space;

an inner core disposed at least partially in the receiving space;

a plurality of outer cores disposed at least partially around the inner core;

a winding at least partially disposed on the outer core;

a pump groove mechanism at least partially disposed between the outer core and the inner core;

it is characterized in that the preparation method is characterized in that,

the outer core includes:

a yoke ring, said yoke ring being substantially a torus;

a yoke ring, said yoke ring being substantially a torus and being stacked with said yoke ring;

a blocking layer at least partially disposed in the yoke ring and at least partially disposed in the tooth yoke ring, the blocking layer extending substantially in an axial direction of the electromagnetic pump;

the tooth yoke ring comprises a plurality of first laminations which are stacked to form the tooth yoke ring.

2. The electromagnetic pump of claim 1, wherein the inside diameter of the tooth yoke ring is smaller than the inside diameter of the yoke ring.

3. The electromagnetic pump according to claim 2, wherein the yoke ring is formed with a placement space for disposing the winding.

4. The electromagnetic pump of claim 2, wherein the outer diameter of the tooth yoke ring and the outer diameter of the yoke ring are substantially uniform.

5. The electromagnetic pump of claim 1, wherein the partition layer is an insulating magnetically permeable material.

6. The electromagnetic pump of claim 1, wherein when the blocking layer is at least partially disposed in the yoke ring, a length of the blocking layer in a radial direction of the electromagnetic pump is a first length, a length of the yoke ring in the radial direction of the electromagnetic pump is a second length, and the first length and the second length are substantially coincident.

7. The electromagnetic pump of claim 6, wherein when the blocking layer is at least partially disposed in the yoke ring, a length of the blocking layer in a radial direction of the electromagnetic pump is a third length, a length of the yoke ring in the radial direction of the electromagnetic pump is a fourth length, and the third length and the fourth length are substantially coincident.

8. The electromagnetic pump of claim 1, wherein the pump body includes a first housing and a second housing, the first housing disposed about the second housing, the second housing disposed at least partially about a number of the outer cores.

9. The electromagnetic pump according to claim 8, wherein the second housing has a cooling water passage formed therein, the cooling water passage including a plurality of water passages and a plurality of connecting water passages, and adjacent two of the water passages are connected by the connecting water passages.

10. The electromagnetic pump of claim 9, wherein the water passage is disposed along a circumferential direction of the second housing, and the connection water passage is disposed substantially along an axial direction of the second housing.