Helical stator structure of superconducting motor

Abstract

The present application discloses a spiral stator structure of a superconducting motor, which includes a first silicon steel sheet, a second silicon steel sheet and a winding coil. Among them, a plurality of the first silicon steel sheet and the second silicon steel sheet are provided. A plurality of first silicon steel sheets are stacked to form a first hollow cylinder, a first spiral groove is formed on the first hollow cylinder, and a second spiral groove is formed on the second hollow cylinder. The winding coil includes a first coil and a second coil. The first coil is installed in the first spiral groove, and the second coil is installed in the second spiral groove. Through the above arrangement, the structural strength of the spiral stator structure can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of motors, and in particular to a spiral stator structure of a superconducting motor. Background Art

[0002] A superconducting motor is a motor whose field winding is made of superconducting materials and is wound with wires that can carry high-density currents in strong magnetic fields.

[0003] In order to reduce the waste of the stator end of the superconducting motor, a spiral winding coil is set in the stator to increase the magnetic flux in the motor. However, the spiral winding coil is usually difficult to fix.

[0004] In the prior art, a cable tie is usually used to fix the spiral winding coil to the stator, or a screw is used to fix the spiral winding. However, the cable tie fixing method will cause the cable tie to occupy too much space in the stator, resulting in a reduction in the number of winding coils arranged in the limited stator space, thereby reducing the power of the motor. In addition, since the cable tie is a flexible structure, it cannot provide stable support for the stator, thereby reducing the overall structural strength of the stator. When fixing with screws, it is necessary to process mounting holes that are compatible with the screws on the stator, thereby increasing the structural complexity of the stator and further increasing the difficulty of processing the stator. In addition, processing mounting holes on the stator also causes stress concentration on the stator, thereby reducing the structural strength of the stator.

[0005] Therefore, how to improve the structural strength of the stator while meeting the motor power requirements and simplifying the complexity of the motor structure is a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

[0006] In order to solve the deficiencies of the prior art, the purpose of the present application is to provide a helical stator structure of a superconducting motor with higher structural strength.

[0007] To achieve the above objectives, this application adopts the following technical solutions:

[0008] A spiral stator structure of a superconducting motor, the spiral stator structure comprising a first silicon steel sheet, a second silicon steel sheet and a winding coil. The first silicon steel sheet and the second silicon steel sheet are both provided in plurality. The plurality of first silicon steel sheets are stacked to form a first hollow cylinder, the first hollow cylinder is provided with a plurality of first spiral protrusions arranged in sequence, each first spiral protrusion is located on the inner wall of the first hollow cylinder, a first spiral groove is formed between two adjacent first spiral protrusions, a plurality of fixed grooves are formed on each first spiral protrusion, the plurality of fixed grooves cooperate with each other to form a plurality of intermittent fixed spiral grooves arranged in sequence, and the spiral direction of the fixed spiral groove is opposite to the spiral direction of the first spiral groove. A plurality of second silicon steel sheets are stacked to form a second hollow cylinder, and a plurality of second spiral protrusions arranged in sequence are formed on the second hollow cylinder, and each second spiral protrusion is located on the outer wall of the second hollow cylinder, and each second spiral protrusion is at least partially located in a fixed spiral groove and is clamped with the fixed spiral groove, and a second spiral groove is formed between two adjacent second spiral protrusions, and the spiral direction of the second spiral groove is opposite to the spiral direction of the first spiral groove. The winding coil includes a first coil and a second coil. The first coil and the second coil are both spiral-shaped, and the spiral direction of the first coil is the same as the spiral direction of the first spiral groove, and the second coil is the same as the spiral direction of the second spiral groove, and the first coil is installed in the first spiral groove, and the second coil is installed in the second spiral groove.

[0009] Further, the depth of the first spiral groove along the radial direction of the first hollow cylinder is greater than the depth of the fixed groove along the radial direction of the first hollow cylinder, and the depth of the first spiral groove along the radial direction of the first hollow cylinder is consistent with the depth of the second spiral groove along the radial direction of the second hollow cylinder. The thickness of the first coil along the radial direction of the first hollow cylinder is less than the depth of the first spiral groove along the radial direction of the first hollow cylinder, and the thickness of the second coil along the radial direction of the second hollow cylinder is less than the depth of the second spiral groove along the radial direction of the second hollow cylinder.

[0010] Further, a projection plane perpendicular to a preset direction is defined, the projection of the bottom of the fixed groove on the projection plane perpendicular to the preset direction is the first projection plane, the projection of the opening of the fixed groove on the projection plane perpendicular to the preset direction is the second projection plane, the second projection plane is located in the first projection plane, the area of ​​the first projection plane is greater than the area of ​​the second projection plane, wherein the preset direction is perpendicular to the bottom surface of the fixed groove. The inner contour of the fixed spiral groove is consistent with the outer contour of the second spiral protrusion.

[0011] Furthermore, a section plane perpendicular to the axial direction of the first hollow cylinder is defined, and the cross sections of the first spiral groove, the second spiral groove, the first spiral protrusion, the second spiral protrusion and the fixing groove cut by the section plane are all quadrilaterals.

[0012] Further, the first coil includes an insulating layer, a conductor and a cooling water pipe. The insulating layer contacts the first spiral groove, and an inner cavity is formed around the insulating layer. The conductor is provided with multiple turns, and the multiple turns of the conductor are located in the inner cavity. At least one cooling water pipe is provided, and the cooling water pipe is located in the inner cavity. The cooling water pipe and the multiple turns of the conductor form a winding inner layer, and the outer contour of the winding inner layer is consistent with the inner contour of the inner cavity.

[0013] Furthermore, the multi-turn wire forms a plurality of wire groups along the circumference of the first hollow cylinder, and each of the three wire groups is defined as a wire assembly, and a cooling water pipe is provided in each wire assembly. The minimum distance between each cooling water pipe and the corresponding wire assembly along the circumference of the first hollow cylinder is consistent. The minimum distance between each cooling water pipe and the corresponding wire assembly along the radial direction of the first hollow cylinder is consistent.

[0014] Furthermore, the structure of the second coil is consistent with that of the first coil.

[0015] Furthermore, the spiral stator structure includes a first fixed pressure plate, a second fixed pressure plate and a fixing member. The first fixed pressure plate abuts against one end of the first hollow cylinder and one end of the second hollow cylinder. The second fixed pressure plate abuts against the other end of the first hollow cylinder and the other end of the second hollow cylinder, so that the first fixed pressure plate and the second fixed pressure plate axially fix the positions of the first hollow cylinder and the second hollow cylinder along the first hollow cylinder. The fixing member includes a connecting portion extending along the axial direction of the first hollow cylinder and two fixing portions extending along the radial direction of the first hollow cylinder, the two fixing portions are connected by the connecting portion, and the two fixing portions respectively abut against a side of the first fixed pressure plate away from the first hollow cylinder and a side of the second fixed pressure plate away from the first hollow cylinder.

[0016] Further, the first fixed pressure plate includes a first plate and a second plate. The first plate is basically an annular body, and the inner wall of the first plate is formed with a first sheet portion and a second sheet portion along the radial extension of the first plate, and a second sheet portion is arranged between two adjacent first sheet portions, and a first guide structure is formed on the second sheet portion, and the first guide structure extends along the radial direction of the first plate, and the first guide structure protrudes from both sides of the second sheet portion along the axial direction of the first plate respectively. The second plate is basically an annular body, and the upper surface of the second plate is indented to form a first wiring groove and a second wiring groove, and the first wiring groove and the second wiring groove are annular grooves, and the first wiring groove is arranged around the second wiring groove, and a labyrinth structure and a second guide structure are formed on the side of the second wiring groove away from the first wiring groove, and the labyrinth structure connects the second wiring groove and the inner side of the second plate, and the second guide structure extends along the radial direction of the second plate. When the first plate is fixedly connected to the second plate, the first guide structure abuts against the second guide structure, so that the first guide structure and the second guide structure can pass through the first wire harness along both sides of the circumference of the first plate, and the labyrinth structure abuts against the first sheet portion, so that the labyrinth structure can pass through the second wire harness, the first wire harness is end wiring, and the second wire harness is phase-to-phase wiring. The first wiring groove is used to fix the first wire harness, and the second wiring groove is used to fix the second wire harness.

[0017] Furthermore, the spiral stator structure also includes an outer sleeve, which is sleeved on the first hollow cylinder, and the fixing piece is fixed on the inner wall of the outer sleeve.

[0018] The above-mentioned spiral stator structure does not need to use cable ties or screws to fix the winding coils, and the structural strength of the spiral stator structure is improved while meeting the motor power requirements and simplifying the complexity of the motor structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the spiral stator structure of the present application;

[0020] Figure 2 An exploded schematic diagram of the spiral stator structure of the present application;

[0021] Figure 3 This is a schematic structural diagram of a first hollow cylinder of the spiral stator structure of the present application;

[0022] Figure 4 This is a schematic structural diagram of the second hollow cylinder of the spiral stator structure of the present application;

[0023] Figure 5 A schematic structural diagram of the first hollow cylinder of the spiral stator structure of the present application from another perspective;

[0024] Figure 6 This is a schematic structural diagram of a first coil of a spiral stator structure of the present application;

[0025] Figure 7 for Figure 6 The enlarged schematic diagram of point A in the middle;

[0026] Figure 8 This is a schematic diagram of the temperature of the first coil of the spiral stator structure of the present application when in operation;

[0027] Fig. 9 A schematic diagram of the combination of a fixing member and an outer sleeve of the spiral stator structure of the present application;

[0028] Fig.10 It is a schematic diagram of the combination of the first wiring harness, the second wiring harness and the first fixed pressure plate of the spiral stator structure of the present application. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the specific implementation manner of the present application will be clearly and completely described below in conjunction with the drawings in the implementation manner of the present application.

[0030] It should be noted that the words "first", "second" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "a" do not indicate a quantitative limitation, but indicate the existence of at least one. "Multiple" or "several" means at least two. Unless otherwise specified, words such as "front", "back", "left", "right", "bottom" and / or "top" are only for the convenience of description and are not limited to one position or one spatial orientation. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect.

[0031] The singular forms "a", "said" and "the" used in this specification and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0032] like Figure 1 and Figure 2As shown, as an embodiment, the present application provides a spiral stator structure 100 of a superconducting motor, and the spiral stator structure 100 includes a first silicon steel sheet 11, a second silicon steel sheet 12 and a winding coil 13. There are multiple first silicon steel sheets 11 and second silicon steel sheets 12, and the first silicon steel sheets 11 and the second silicon steel sheets 12 are used to support the winding coil 13. The winding coil 13 is used to generate an induced magnetic field.

[0033] Specifically, the winding coil 13 includes a first coil 131 and a second coil 132, and the first coil 131 and the second coil 132 are spiral-shaped. In this way, the spiral-shaped first coil 131 and the second coil 132 can improve the compactness of the structure of the winding coil 13, so that more winding coils 13 can be arranged in the stator of the same volume, which is beneficial to improve the operating power of the superconducting motor.

[0034] like Figure 3 and Figure 4 As shown, in this embodiment, a plurality of first silicon steel sheets 11 are stacked to form a first hollow cylinder 111, and a plurality of first spiral protrusions 1111 arranged in sequence are formed on the first hollow cylinder 111, and each first spiral protrusion 1111 is located on the inner wall of the first hollow cylinder 111. Among them, a first spiral groove 1112 is formed between two adjacent first spiral protrusions 1111. In addition, the spiral direction of the first spiral groove 1112 is the same as the spiral direction of the first coil 131, and the first coil 131 is installed in the first spiral groove 1112. In this way, the first coil 131 can be fixed in the first hollow cylinder 111 through the first spiral groove 1112.

[0035] Specifically, a plurality of second silicon steel sheets 12 are stacked to form a second hollow cylinder 121, and a plurality of second spiral protrusions 1211 arranged in sequence are formed on the second hollow cylinder 121, and each second spiral protrusion 1211 is located on the outer wall of the second hollow cylinder 121. A second spiral groove 1212 is formed between two adjacent second spiral protrusions 1211, and the spiral direction of the second spiral groove 1212 is opposite to the spiral direction of the first spiral groove 1112. In addition, the spiral direction of the second spiral groove 1212 is the same as the spiral direction of the second coil 132, and the second coil 132 is installed in the second spiral groove 1212. In this way, the second coil 132 can be fixed in the second hollow cylinder 121 through the second spiral groove 1212.

[0036] More specifically, a plurality of fixed grooves 1113 are formed on each first spiral protrusion 1111, and the plurality of fixed grooves 1113 cooperate with each other to form a plurality of intermittent fixed spiral grooves 1114 arranged in sequence. The spiral direction of the fixed spiral groove 1114 is opposite to the spiral direction of the first spiral groove 1112. The fixed spiral groove 1114 is used to connect a plurality of first silicon steel sheets 11 and a plurality of second silicon steel sheets 12. Each second spiral protrusion 1211 is at least partially located in a fixed spiral groove 1114 and is engaged with the fixed spiral groove 1114. With such a configuration, the connection of a plurality of first silicon steel sheets 11 and a plurality of second silicon steel sheets 12 can be achieved through the cooperation of the fixed spiral groove 1114 and the second spiral protrusion 1211, that is, the assembly of the first hollow cylinder 111 and the second hollow cylinder 121 can be achieved.

[0037] Through the above arrangement, the spiral first coil 131 and the second coil 132 can be fixed in the spiral stator structure 100 without the need for cable ties or screws, thereby avoiding the cable ties being unable to support the spiral stator structure 100 and resulting in a reduction in the structural strength of the spiral stator structure 100, and avoiding the use of screws and resulting in stress concentration in the spiral stator structure 100, which is beneficial to improving the overall structural strength of the spiral stator structure 100.

[0038] Secondly, it is also possible to avoid the cable tie occupying too much space in the spiral stator structure 100, which results in a reduction in the number of winding coils 13 arranged in the spiral stator structure 100, thereby facilitating the improvement of the power of the superconducting motor so that the superconducting motor can meet the power requirement. In addition, it is also possible to avoid the increase in the complexity of the spiral stator structure 100 due to the opening of multiple through holes adapted to the screws in the spiral stator structure 100, thereby facilitating the simplification of the structure of the spiral stator structure 100, and further facilitating the reduction of the difficulty of processing the spiral stator structure 100.

[0039] In the present application, since the first silicon steel sheet 11 and the second silicon steel sheet 12 are magnetic materials, the magnetic materials can concentrate the induced magnetic field generated by the winding coil 13, thereby facilitating the smoothness of the spiral stator structure 100, and further facilitating the power of the superconducting motor.

[0040] Secondly, through the above-mentioned arrangement, it is possible to avoid the need to install insulating material between the winding coil 13 and the first silicon steel sheet 11, and the need to install insulating material between the winding coil 13 and the second silicon steel sheet 12 due to the use of non-magnetic materials for the first silicon steel sheet 11 and the second silicon steel sheet 12, so that the winding coil 13 is in direct contact with the first silicon steel sheet 11, and the winding coil 13 is in direct contact with the second silicon steel sheet 12, thereby avoiding the insulating material from reducing the thermal conductivity between the winding coil 13 and the first silicon steel sheet 11, and reducing the thermal conductivity between the winding coil 13 and the second silicon steel sheet 12, which is beneficial to improving the heat dissipation performance of the winding coil 13 in the spiral stator structure 100. Furthermore, it is also possible to avoid the insulating material occupying too much space in the spiral stator structure 100 and increasing the thickness of the winding coil 13, thereby avoiding the winding coil 13 being too thick and reducing the number of winding coils 13 in the spiral stator structure 100, which is beneficial to increase the number of winding coils 13 arranged in the spiral stator structure 100, and further beneficial to improve the power of the superconducting motor.

[0041] In addition, the present application adopts a method of stacking multiple first silicon steel sheets 11 to form a first hollow cylinder 111, and a method of stacking multiple second silicon steel sheets 12 to form a second hollow cylinder 121, so that the yoke and the groove in the spiral stator structure 100 are an integral structure, and there is no need to separately process the yoke and the groove, which is conducive to simplifying the processing technology of the spiral stator structure 100 and improving the processing efficiency of the spiral stator structure 100.

[0042] It should be noted that the spiral stator structure 100 made of magnetic material can concentrate the induced magnetic field generated by the winding coil 13, while the spiral stator structure made of non-magnetic material cannot concentrate the induced magnetic field generated by the winding coil 13. Therefore, the spiral stator structure made of non-magnetic material needs to be equipped with insulating material to concentrate the induced magnetic field generated by the winding coil 13.

[0043] It should be noted that the first hollow cylinder 111 and the second hollow cylinder 121 of the present application can also be made by laminating other magnetic materials such as nickel-iron alloy, and the present application does not impose any limitation on this.

[0044] As an embodiment, the depth of the first spiral groove 1112 along the radial direction of the first hollow cylinder 111 is greater than the depth of the fixing groove 1113 along the radial direction of the first hollow cylinder 111. With such a configuration, when the second hollow cylinder 121 is screwed into the first hollow cylinder 111 through the fixing groove 1113, it is possible to avoid the second spiral protrusion 1211 from abutting against the groove bottom of the first spiral groove 1112, thereby preventing the second spiral protrusion 1211 from interfering with the first coil 131, thereby preventing the second spiral protrusion 1211 from interfering with the first coil 131, thereby preventing the first coil 131 from being worn or even damaged, thereby facilitating the service life of the first coil 131.

[0045] Specifically, the depth of the first spiral groove 1112 along the radial direction of the first hollow cylinder 111 is consistent with the depth of the second spiral groove 1212 along the radial direction of the second hollow cylinder 121. In this way, the first coil 131 and the second coil 132 with the same thickness along the radial direction of the first hollow cylinder 111 can be installed in the first spiral groove 1112 and the second spiral groove 1212, which is conducive to improving the versatility of the spiral stator structure 100.

[0046] More specifically, the thickness of the first coil 131 along the radial direction of the first hollow cylinder 111 is smaller than the depth of the first spiral groove 1112 along the radial direction of the first hollow cylinder 111, and the thickness of the second coil 132 along the radial direction of the second hollow cylinder 121 is smaller than the depth of the second spiral groove 1212 along the radial direction of the second hollow cylinder 121. With such an arrangement, a gap can be provided between the first coil 131 and the second coil 132, so that during the assembly process of the spiral stator structure 100, interference between the first coil 131 and the second coil 132 can be avoided, thereby facilitating the improvement of the assembly efficiency of the spiral stator structure 100.

[0047] like Figure 5 As shown, as an optional implementation, the direction of the groove bottom surface perpendicular to a fixed groove 1113 is defined as a preset direction 101, and a projection plane 102 perpendicular to the preset direction 101 is defined. Specifically, the projection of the groove bottom of the fixed groove 1113 on the projection plane 102 perpendicular to the preset direction 101 is a first projection plane, and the projection of the opening of the fixed groove 1113 on the projection plane 102 perpendicular to the preset direction 101 is a second projection plane. Among them, the area of ​​the first projection plane is greater than the area of ​​the second projection plane, and the second projection plane is located in the first projection plane. More specifically, the inner contour of the fixed spiral groove 1114 is consistent with the outer contour of the second spiral protrusion 1211. In this way, it is possible to avoid the second spiral protrusion 1211 slipping out of the fixed spiral groove 1114 due to the area of ​​the first projection plane being less than or equal to the area of ​​the second projection plane, thereby facilitating the improvement of the connection stability between the second hollow cylinder 121 and the first hollow cylinder 111.

[0048] It should be noted that, in the present application, the bottom of the fixing groove 1113 basically extends along a plane.

[0049] like Figure 4 and Figure 5 As shown, as an embodiment, a cross-sectional plane 103 perpendicular to the axial direction of the first hollow cylinder 111 is defined. Specifically, the cross-sections of the first spiral groove 1112, the second spiral groove 1212, the first spiral protrusion 1111, the second spiral protrusion 1211 and the fixing groove 1113 cut by the cross-sectional plane 103 are all quadrilaterals. In this way, the first spiral groove 1112, the second spiral groove 1212, the first spiral protrusion 1111, the second spiral protrusion 1211 and the fixing groove 1113 can all have edges. Furthermore, the edges of the fixing groove 1113 can be engaged with the edges of the second spiral protrusion 1211, so that the fixing groove 1113 and the second spiral protrusion 1211 can be limited by the edge engagement, so as to avoid the relative deflection of the second spiral protrusion 1211 and the fixing groove 1113 during the use of the spiral stator structure 100, which is beneficial to improve the connection stability between the first hollow cylinder 111 and the second hollow cylinder 121.

[0050] In some embodiments, the cross-sections of the first coil 131 and the second coil 132 cut by the cutting plane 103 are both quadrilateral. In this way, the first coil 131 and the second coil 132 can also have edges. When the first coil 131 is installed in the first spiral groove 1112, the edges in the first spiral groove 1112 can be engaged with the edges of the first coil 131, which is conducive to improving the installation stability of the first coil 131 in the first spiral groove 1112. When the second coil 132 is installed in the second spiral groove 1212, the edges in the second spiral groove 1212 can be engaged with the edges of the second coil 132, which is conducive to improving the installation stability of the second coil 132 in the second spiral groove 1212.

[0051] like Figure 6 and Figure 7 As shown, as an embodiment, the first coil 131 includes an insulating layer 1311, a wire 1312 and a cooling water pipe 1313. The insulating layer 1311 is in contact with the first spiral groove 1112, and the insulating layer 1311 is used for insulation between the first coil 131 and the first silicon steel sheet 11. The wire 1312 is provided with multiple turns, and the multiple turns of the wire 1312 are used to energize so that the winding coil 13 can form a magnetic field. At least one cooling water pipe 1313 is provided, and the cooling water pipe 1313 is used to cool the first coil 131. During the operation of the superconducting motor, the winding coil 13 can be prevented from being damaged due to excessive temperature, thereby facilitating the operation stability and service life of the winding coil 13.

[0052] Specifically, the insulating layer 1311 is surrounded by an inner chamber 1311a. The multiple turns of wire 1312 and the cooling water pipe 1313 are both located in the inner chamber 1311a. In some embodiments, the insulating layer 1311 is made of mica material, and mica has insulating properties, so that the insulating layer 1311 can be used for insulation between the first coil 131 and the first silicon steel sheet 11. And mica has high mechanical strength, so that the overall mechanical strength of the spiral stator structure 100 can be improved. It should be noted that the present application does not limit the material of the insulating layer 1311, and it only needs to meet the insulation performance.

[0053] More specifically, the cooling water pipe 1313 and the multi-turn wire 1312 form a winding inner layer, and the outer contour of the winding inner layer is consistent with the inner contour of the inner chamber 1311a. This arrangement can improve the structural tightness of the cooling water pipe 1313 and the multi-turn wire 1312 in the insulating layer 1311, thereby reducing the overall volume of the first coil 131, and furthermore, more first coils 131 can be installed in a limited space, which is beneficial to improving the power of the superconducting motor.

[0054] like Figure 7 and Figure 8 As shown, in some embodiments, cooling water is passed into the cooling water pipe 1313, and a water inlet pipe (not shown) and a water outlet pipe (not shown) are provided in the spiral stator structure 100, and openings (not shown) are provided at both ends of the first coil 131, and the water inlet pipe and the water outlet pipe respectively pass through the openings and are connected to the cooling water pipe 1313, and one end of the water inlet pipe away from the cooling water pipe 1313 and one end of the water outlet pipe away from the cooling water pipe 1313 are both connected to the outside, so that the external cooling water can pass into the cooling water pipe 1313 through the water inlet pipe, and then drain through the water outlet pipe, thereby realizing the cooling water flow in the cooling water pipe 1313. Exemplarily, when the cooling water flow rate in the cooling water pipe 1313 is only 0.1m / s, the maximum temperature of the spiral stator structure 100 is only 56.65°C. Since the maximum operating temperature of the superconducting motor is 130°C, the cooling demand of the spiral stator structure 100 can be met.

[0055] Optionally, the multi-turn wire 1312 is formed with multiple groups of wire groups 1314 along the circumference of the first hollow cylinder 111. Specifically, every three groups of wire groups 1314 are defined as a wire member 1315, and a cooling water pipe 1313 is provided in each wire member 1315. More specifically, the minimum distance between each cooling water pipe 1313 and the corresponding wire member 1315 on both sides along the circumference of the first hollow cylinder 111 is consistent. And, the minimum distance between each cooling water pipe 1313 and the corresponding wire member 1315 on both sides along the radial direction of the first hollow cylinder 111 is consistent. Such arrangement can make the cooling water pipe 1313 in each wire member 1315 be arranged in the center of the wire member 1315, so as to avoid the cooling water pipe 1313 not being arranged in the center of the wire member 1315, resulting in uneven cooling of the cooling water pipe 1313 to the wire member 1315, thereby being conducive to improving the cooling effect of the cooling water pipe 1313 on the wire member 1315.

[0056] It should be noted that the present application does not limit the number of wire groups 1314 in the wire member 1315 , and it is only required that the cooling water pipe 1313 is located in the center of the wire member 1315 .

[0057] As an implementation mode, the structure of the second coil 132 is consistent with that of the first coil 131, and therefore, the present application does not repeat the structure of the second coil 132. Externally, in the present application, the second coil 132 is only different from the spiral direction of the first coil 131, so that the second coil 132 can adapt to the second spiral groove 1212.

[0058] like Figure 2 and Fig. 9 As shown, as an embodiment, the spiral stator structure 100 further includes a first fixed platen 14, a second fixed platen 15 and a fixing member 16. Specifically, the first fixed platen 14 abuts against one end of the first hollow cylinder 111 and one end of the second hollow cylinder 121. The second fixed platen 15 abuts against the other end of the first hollow cylinder 111 and the other end of the second hollow cylinder 121, so that the first fixed platen 14 and the second fixed platen 15 fix the positions of the first hollow cylinder 111 and the second hollow cylinder 121 along the axial direction of the first hollow cylinder 111. The fixing member 16 is used to fix the first fixed platen 14 and the second fixed platen 15, thereby fixing the first hollow cylinder 111 and the second hollow cylinder 121.

[0059] More specifically, the fixing member 16 includes a connecting portion 161 and a fixing portion 162. The connecting portion 161 extends axially along the first hollow cylinder 111. Two fixing portions 162 are provided, and the two fixing portions 162 extend radially along the first hollow cylinder 111. And the two fixing portions 162 are connected by the connecting portion 161. In this way, the fixing member 16 can be basically in a "C"-shaped structure, and the first fixed platen 14 and the second fixed platen 15 are located in the opening of the fixing member 16, so that the fixing member 16 can fix the first fixed platen 14 and the second fixed platen 15.

[0060] In this embodiment, the two fixing portions 162 respectively abut against the side of the first fixing platen 14 away from the first hollow cylinder 111 and the side of the second fixing platen 15 away from the first hollow cylinder 111. In this configuration, the first hollow cylinder 111 and the second hollow cylinder 121 can be fixed by the two fixing portions 162 cooperating with the connecting portion 161, thereby eliminating the need to use fasteners such as bolts to fix the first hollow cylinder 111 and the second hollow cylinder 121, thereby simplifying the assembly process of the spiral stator structure 100 and improving the assembly efficiency of the spiral stator structure 100.

[0061] In some embodiments, a plurality of fixing members 16 are provided, and the plurality of fixing members 16 are evenly arranged along the circumference of the first hollow cylinder 111. In this way, the connection stability between the first hollow cylinder 111 and the second hollow cylinder 121 can be improved by the plurality of fixing members 16.

[0062] As another embodiment, one fixing portion 162 is provided, and the fixing portion 162 is provided at an end away from the second fixed platen 15. With such a configuration, the first hollow cylinder 111 and the second hollow cylinder 121 can enter the fixing member 16 from the end where the fixing portion 162 is not provided, and the fixing portion 162 can limit the first hollow cylinder 111 and the second hollow cylinder 121, and then the second fixed platen 15 limits the end of the first hollow cylinder 111 and the second hollow cylinder 121 away from the fixing portion 162, thereby achieving the limiting of the first hollow cylinder 111 and the second hollow cylinder 121. In some embodiments, the second fixed platen 15 is bonded to the connecting portion 161, so that the second fixed platen 15 can cooperate with the fixing portion 162 to limit the first hollow cylinder 111 and the second hollow cylinder 121.

[0063] In some embodiments, the first fixed plate 14 and the second fixed plate 15 are both made of glass fiber reinforced plastic. Glass fiber reinforced plastic has high strength, thereby improving the overall strength of the spiral stator structure 100. In addition, glass fiber reinforced plastic has insulation properties, thereby improving the concentration of the induced magnetic field generated by the winding coil 13, thereby facilitating the improvement of the power of the superconducting motor.

[0064] like Fig.10 As shown, as an optional implementation, the first fixed plate 14 includes a first plate 141 and a second plate 142. The first plate 141 is basically an annular body, and the inner wall of the first plate 141 is formed with a first sheet portion 1411 and a second sheet portion 1412 along the radial extension of the first plate 141. Specifically, a second sheet portion 1412 is arranged between two adjacent first sheet portions 1411. With such an arrangement, the first sheet portion 1411 and the second sheet portion 1412 can be arranged at intervals on the first plate 141. More specifically, a first guide structure 1412a is formed on the second sheet portion 1412, and the first guide structure 1412a extends along the radial direction of the first plate 141, and the first guide structure 1412a protrudes from both sides of the second sheet portion 1412 along the axial direction of the first plate 141.

[0065] In this embodiment, the second plate 142 is basically an annular body, and the upper surface of the second plate 142 is indented to form a first wiring groove 1421 and a second wiring groove 1422. The first wiring groove 1421 is used to fix the first wiring harness 18 connected to the winding coil 13, and the second wiring groove 1422 is used to fix the second wiring harness 19 connected to the winding coil 13. In this way, the first wiring harness 18 can be limited by the first wiring groove 1421, and the second wiring harness 19 can be limited by the second wiring groove 1422, which is conducive to improving the neatness of the first wiring harness 18 and the second wiring harness 19 on the second plate 142.

[0066] Specifically, the first wiring groove 1421 and the second wiring groove 1422 are both annular grooves, and the first wiring groove 1421 is arranged around the second wiring groove 1422. Such an arrangement allows the first wiring groove 1421 and the second wiring groove 1422 to be adapted to the annular structure of the second plate 142, thereby facilitating the increase of the accommodation space of the first wiring groove 1421 and the second wiring groove 1422, so that the first wiring groove 1421 and the second wiring groove 1422 can fix more first wiring harnesses 18 and second wiring harnesses 19.

[0067] A labyrinth structure 1422a and a second guide structure 1422b are formed on one side of the second wiring slot 1422 away from the first wiring slot 1421. The labyrinth structure 1422a connects the second wiring slot 1422 and the inner side surface of the second plate 142, and the second guide structure 1422b extends along the radial direction of the second plate 142. In this way, the wire 1312 in the second wiring slot 1422 can be connected to the inner side surface of the second plate 142 through the labyrinth structure 1422a, so as to facilitate the connection between the winding coil 13 located on the inner side surface of the second plate 142 and the wire 1312 in the second wiring slot 1422.

[0068] More specifically, when the first plate 141 and the second plate 142 are fixedly connected, the first guide structure 1412a abuts against the second guide structure 1422b, so that the first guide structure 1412a and the second guide structure 1422b can pass through the first wire harness 18 along both sides of the circumference of the first plate 141. In addition, the labyrinth structure 1422a abuts against the first sheet portion 1411, so that the labyrinth structure 1422a can pass through the second wire harness 19. The first wire harness 18 is an end wiring, and the second wire harness 19 is a phase-to-phase wiring. Exemplarily, when the superconducting motor is a three-phase motor, the first wire harness 18 is composed of three live wires and one neutral wire.

[0069] It should be noted that when the first guide structure 1412a abuts against the second guide structure 1422b, there is a gap between the second sheet portion 1412 and the second plate 142 along the axial direction of the first plate 141, so that the first wire harness 18 can pass through the gap, which is beneficial to the installation of the first wire harness 18 in the spiral stator structure 100.

[0070] In some embodiments, the first plate 141 and the second plate 142 are bonded by a fixing adhesive.

[0071] In some embodiments, a limiting groove 1423 is provided on one side of the second plate 142 facing the first plate 141, and a limiting structure 1413 is provided on one side of the first plate 141 facing the second plate 142 (see Figure 2 ). The limiting mechanism 1413 can be engaged with the limiting groove 1423 , so as to limit the relative position of the second plate 142 and the first plate 141 , thereby facilitating improving the connection stability between the first plate 141 and the second plate 142 .

[0072] like Fig. 9 As shown, as an embodiment, the spiral stator structure 100 further includes an outer sleeve 17, the outer sleeve 17 is sleeved on the first hollow cylinder 111, and the fixing member 16 is fixed to the inner wall of the outer sleeve 17. In this way, the outer sleeve 17 can improve the protection of the first hollow cylinder 111 and the second hollow cylinder 121, thereby facilitating the improvement of the service life of the spiral stator structure 100. In some embodiments, the connecting portion 161 is bonded to the outer sleeve 17 so that the fixing member 16 is fixedly connected to the inner wall of the outer sleeve 17.

[0073] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. A helical stator structure of a superconducting motor, characterized in that: The spiral stator structure comprises: A plurality of first silicon steel sheets, wherein the plurality of first silicon steel sheets are stacked to form a first hollow cylinder, wherein a plurality of first spiral protrusions arranged in sequence are formed on the first hollow cylinder, wherein each of the first spiral protrusions is located on the inner wall of the first hollow cylinder, wherein a first spiral groove is formed between two adjacent first spiral protrusions, wherein a plurality of fixing grooves are formed on each of the first spiral protrusions, wherein the plurality of fixing grooves cooperate with each other to form a plurality of intermittent fixing spiral grooves arranged in sequence, wherein the spiral direction of the fixing spiral groove is opposite to the spiral direction of the first spiral groove; A plurality of second silicon steel sheets, wherein the plurality of second silicon steel sheets are stacked to form a second hollow cylinder, wherein a plurality of second spiral protrusions arranged in sequence are formed on the second hollow cylinder, wherein each of the second spiral protrusions is located on the outer wall of the second hollow cylinder, wherein each of the second spiral protrusions is at least partially located in one of the fixed spiral grooves and is clamped with the fixed spiral groove, wherein a second spiral groove is formed between two adjacent second spiral protrusions, and wherein the spiral direction of the second spiral groove is opposite to that of the first spiral groove; A winding coil, the winding coil includes a first coil and a second coil in a spiral shape, the spiral direction of the first coil is the same as the spiral direction of the first spiral groove, the spiral direction of the second coil is the same as the spiral direction of the second spiral groove, the first coil is installed in the first spiral groove, and the second coil is installed in the second spiral groove.

2. The helical stator structure of a superconducting motor according to claim 1, characterized in that: The depth of the first spiral groove along the radial direction of the first hollow cylinder is greater than the depth of the fixed groove along the radial direction of the first hollow cylinder, and the depth of the first spiral groove along the radial direction of the first hollow cylinder is consistent with the depth of the second spiral groove along the radial direction of the second hollow cylinder; The thickness of the first coil along the radial direction of the first hollow cylinder is smaller than the depth of the first spiral groove along the radial direction of the first hollow cylinder, and the thickness of the second coil along the radial direction of the second hollow cylinder is smaller than the depth of the second spiral groove along the radial direction of the second hollow cylinder.

3. The helical stator structure of a superconducting motor according to claim 1 or 2, characterized in that: A projection plane perpendicular to a preset direction is defined, the projection of the bottom of the fixing groove on the projection plane perpendicular to the preset direction is a first projection plane, the projection of the opening of the fixing groove on the projection plane perpendicular to the preset direction is a second projection plane, the second projection plane is located within the first projection plane, the area of ​​the first projection plane is greater than the area of ​​the second projection plane, wherein the preset direction is a direction perpendicular to the bottom surface of the fixing groove; The inner contour of the fixed spiral groove is consistent with the outer contour of the second spiral protrusion.

4. The helical stator structure of the superconducting motor according to claim 3, characterized in that: A sectional plane perpendicular to the axial direction of the first hollow cylinder is defined, and the cross sections of the first spiral groove, the second spiral groove, the first spiral protrusion, the second spiral protrusion and the fixing groove cut by the sectional plane are all quadrilaterals.

5. The helical stator structure of a superconducting motor according to claim 1 or 2, characterized in that: The first coil comprises: an insulating layer, the insulating layer being in contact with the first spiral groove and having an inner cavity formed around the insulating layer; A plurality of turns of conductive wire, wherein the plurality of turns of conductive wire are located in the inner cavity; At least one cooling water pipe is located in the inner cavity, the cooling water pipe and the multiple turns of the conductive wire form a winding inner layer, and the outer contour of the winding inner layer is consistent with the inner contour of the inner cavity.

6. The helical stator structure of the superconducting motor according to claim 5, characterized in that: Multiple turns of the wire form multiple wire groups along the circumference of the first hollow cylinder, and each of the three wire groups is defined as a wire assembly, and each of the wire assemblies is provided with a cooling water pipe; The minimum distance between each cooling water pipe and the corresponding wire member on both sides of the circumference of the first hollow cylinder is consistent; The minimum distance between each cooling water pipe and the corresponding wire member along both sides of the first hollow cylinder in the radial direction is consistent.

7. The helical stator structure of a superconducting motor according to claim 6, characterized in that: The structure of the second coil is consistent with that of the first coil.

8. The helical stator structure of a superconducting motor according to claim 1 or 2, characterized in that: The spiral stator structure comprises: A first fixed pressing plate, the first fixed pressing plate abutting against one end of the first hollow cylinder and one end of the second hollow cylinder; a second fixed pressure plate, the second fixed pressure plate abutting against the other end of the first hollow cylinder and the other end of the second hollow cylinder, so that the first fixed pressure plate and the second fixed pressure plate fix the positions of the first hollow cylinder and the second hollow cylinder along the axial direction of the first hollow cylinder; A fixing part, comprising a connecting part extending axially along the first hollow cylinder and two fixing parts extending radially along the first hollow cylinder, the two fixing parts being connected by the connecting part, and the two fixing parts respectively abutting against a side of the first fixed pressure plate away from the first hollow cylinder and a side of the second fixed pressure plate away from the first hollow cylinder.

9. The helical stator structure of a superconducting motor according to claim 8, characterized in that: The first fixed platen comprises: A first plate, the first plate is substantially an annular body, the inner wall of the first plate is extended along the radial direction of the first plate to form a first sheet portion and a second sheet portion, a second sheet portion is arranged between two adjacent first sheet portions, a first guide structure is formed on the second sheet portion, the first guide structure extends along the radial direction of the first plate, and the first guide structure protrudes from both sides of the second sheet portion along the axial direction of the first plate respectively; A second plate, the second plate is substantially an annular body, the upper surface of the second plate is indented to form a first wiring groove and a second wiring groove, the first wiring groove and the second wiring groove are annular grooves, the first wiring groove is arranged around the second wiring groove, a labyrinth structure and a second guide structure are formed on a side of the second wiring groove away from the first wiring groove, the labyrinth structure communicates with the second wiring groove and the inner side surface of the second plate, and the second guide structure extends along the radial direction of the second plate; When the first plate is fixedly connected to the second plate, the first guide structure abuts against the second guide structure, so that the first guide structure and the second guide structure can allow the first wire harness to pass through both sides of the first plate along the circumference, and the labyrinth structure abuts against the first sheet portion, so that the labyrinth structure can allow the second wire harness to pass through, the first wire harness is end wiring, and the second wire harness is phase-to-phase wiring; The first wiring groove is used to fix the first wiring harness, and the second wiring groove is used to fix the second wiring harness.

10. The helical stator structure of a superconducting motor according to claim 8, characterized in that: The spiral stator structure further includes an outer sleeve, which is sleeved on the first hollow cylinder, and the fixing member is fixed on the inner wall of the outer sleeve.

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