Shielding sleeve for motor and motor applying shielding sleeve
By adding reinforcing components to the plastic shielding sleeve, the problems of electromagnetic eddy current loss and insufficient pressure bearing capacity are solved, enabling the widespread application of plastic shielding sleeves in shielded pumps and improving their applicability.
Patent Information
- Application Number
- CN202520130412.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-01-20
AI Technical Summary
When using plastic shielding sleeves, existing high-power canned pump motors suffer from electromagnetic eddy current losses and insufficient pressure-bearing capacity, affecting their applicability.
A reinforcing member is installed on the plastic shielding sleeve. The main body of the reinforcing member avoids the middle support section supporting the stator, and only the end of the reinforcing member is used to support the corresponding end of the stator. High-strength materials such as stainless steel or carbon fiber are used to enhance the support strength of the plastic shielding sleeve.
It reduces eddy current losses, improves the pressure-bearing capacity of the plastic shielding sleeve, expands its application range in shielded pumps, and has good applicability.
Smart Images
Figure CN223758131U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to motor field especially relates to a motor with shield sleeve and the motor of application thereof. BACKGROUND
[0002] The existing high -power shielded pump motor mostly adopts stainless steel shield sleeve, and the stainless steel shield sleeve has electromagnetic eddy current loss, thereby influencing motor efficiency. In order to solve the problem of electromagnetic eddy current loss of stainless steel shield sleeve, the mode of using plastic shield sleeve to replace stainless steel shield sleeve is usually used to solve the problem of eddy current loss, however, the pressure bearing capacity of plastic shield sleeve is greatly weakened compared with stainless steel shield sleeve, and the problem of insufficient pressure bearing capacity exists, so the plastic shield sleeve is not suitable for high pressure shielded pump motor, and the applicability of the shield sleeve is influenced. SUMMARY
[0003] The utility model discloses a motor with shield sleeve and the motor of application thereof, and the purpose is to solve the above -mentioned problems of prior art, and the reinforcing part is arranged on the shield sleeve of plastic material, the main body of reinforcing part avoids the middle support section of stator, and only a small part of the end of reinforcing part is used to support the corresponding end of stator, and the plastic material is used to reduce eddy current loss, and reinforcing part is used to ensure the support strength of shield sleeve, thereby improving the shield sleeve of plastic material can be more widely applied to shielded pump, and the applicability is better.
[0004] The utility model discloses a motor with shield sleeve and the motor of application thereof, and the purpose is to solve the above -mentioned problems of prior art, and the reinforcing part is arranged on the shield sleeve of plastic material, the main body of reinforcing part avoids the middle support section of stator, and only a small part of the end of reinforcing part is used to support the corresponding end of stator, and the plastic material is used to reduce eddy current loss, and reinforcing part is used to ensure the support strength of shield sleeve, thereby improving the shield sleeve of plastic material can be more widely applied to shielded pump, and the applicability is better.
[0005] As further improvement and supplement to the above technical scheme, the utility model adopts the following technical measures: as preferred, the reinforcing part is stainless steel part or carbon fiber part. Of course, the material of reinforcing part can also be other materials with high strength and high toughness.
[0006] As a preferred embodiment, the reinforcing member is a plurality of reinforcing rings. This is advantageous in reinforcing the support and compression strength of the corresponding part of the plastic shielding sleeve, facilitating the control of the axial length of the reinforcing member, and saving the material consumption of the reinforcing member.
[0007] As a preferred embodiment, the reinforcing member is a plurality of reinforcing rings arranged independently and at intervals, or a continuous helically wound reinforcing ring. When the reinforcing member is a plurality of reinforcing rings arranged independently and at intervals, the appropriate density is formed by controlling the interval between adjacent reinforcing rings, so as to achieve the appropriate support and reinforcement effect. When the reinforcing member is a continuous helically wound reinforcing ring, the appropriate axial length and appropriate density are formed by stretching or compressing the reinforcing member, so as to achieve the appropriate support and reinforcement effect.
[0008] As a preferred embodiment, the reinforcing member is a mesh reinforcing ring. By controlling the arrangement density or size of the mesh, the reinforcing ring can achieve the appropriate support and reinforcement effect.
[0009] As a preferred embodiment, the projection of the reinforcing member on its cross section is a circular ring or a radially concave-convex wavy ring. When the projection of the reinforcing member on its cross section is a radially concave-convex wavy ring, the wavy can be a circular arc wavy or a wavy with edges. When the projection is a wavy ring, the same ring has a larger support area, so that the plastic shielding sleeve has a stronger support strength.
[0010] As a preferred embodiment, the reinforcing member arranged in the first support section is completely embedded in the wall of the first support section, and the wall thickness of the reinforcing member is smaller than the wall thickness of the first support section; or the reinforcing member arranged in the first support section is partially embedded in the first support section and partially exposed to the periphery of the first support section. When assembling, the stator is moved from the outer end of the second support section to the first support section in the direction of the shielding sleeve, and the outer diameter of the second support section needs to fit the inner diameter of the stator, and the outer diameter of the first support section is not affected by the inner diameter of the stator. Therefore, the reinforcing member on the first support section can be completely embedded in the wall of the first support section, or only partially embedded in the wall of the first support section and partially exposed to the periphery of the wall of the first support section, or directly sleeved on the first support section. When the reinforcing member is completely or partially embedded in the wall of the first support section, it is advantageous to reduce the number of parts, facilitate the assembly process, and improve the assembly efficiency.
[0011] As preferred, the reinforcing member arranged in the second supporting section is completely embedded in the wall of the second supporting section, and the wall thickness of the reinforcing member is smaller than the wall thickness of the second supporting section; or the reinforcing member arranged in the second supporting section is sleeved on the second supporting section. When assembling, the stator is moved from the outer end of the second supporting section to the direction of the first supporting section and is sleeved on the shielding sleeve, thus the outer diameter of the second supporting section needs to be adapted to the inner diameter of the stator. When the reinforcing member of the second supporting section is completely embedded in the wall of the second supporting section, in order to avoid the reinforcing member protruding outwardly from the outer wall of the second supporting section and facilitate the assembly of the stator, the wall thickness of the reinforcing member is smaller than the wall thickness of the second supporting section. Or, the reinforcing member of the second supporting section is sleeved on the second supporting section, and when the stator needs to be assembled, the reinforcing member of the second supporting section is removed, and after the stator is assembled in place, the reinforcing member of the second supporting section is sleeved on the second supporting section.
[0012] The second technical subject of the utility model relates to a motor which comprises a stator, a rotor and a shielding sleeve arranged between the stator and the rotor, characterized in that the shielding sleeve is the shielding sleeve for the motor.
[0013] As preferred, the opening end of the shielding sleeve is provided with a flange, and the bottom end of the shielding sleeve is provided with a bearing seat, the flange and the bearing seat are integrated structures with the shielding sleeve, and the bearing seat is provided with a circulating through hole penetrating in the axial direction. The flange with the integrated structure is arranged on the shielding sleeve, thereby reducing the sealing ring between the shielding sleeve and the flange, which can not only ensure the leakage-proof effect, but also facilitate the reduction of the number of parts, the reduction of the assembly process and the improvement of the assembly efficiency. The bearing seat with the integrated structure is arranged at the bottom end of the shielding sleeve and is provided with a circulating through hole, and part of water in the pump body flows into the space between the rotor and the shielding sleeve through the circulating through hole, thereby circulating the heat dissipation of the rotor, the shielding sleeve, the stator and the controller arranged outside the motor.
[0014] The utility model has the beneficial effect that: 1. The reinforcing member is arranged on the shielding sleeve of plastic material, the main body of the reinforcing member avoids the middle supporting section of the stator, only a small part of the end of the reinforcing member is used for supporting the corresponding end of the stator, the shielding sleeve of plastic material can reduce the eddy current loss, the reinforcing member is used for enhancing the supporting strength of the shielding sleeve of plastic material, improving the pressure bearing capacity of the shielding sleeve of plastic material, thereby improving the shielding pump of the shielding sleeve of plastic material can be more widely applied, and good applicability is achieved. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a sectional view structural schematic diagram of the shielding sleeve related to the utility model.
[0016] Figures 2-5 It is a structural schematic diagram of four shapes of the reinforcing member related to the utility model.
[0017] Figure 6 yes Figure 1 Enlarged structural diagram of section A.
[0018] Figure 7 This is a schematic diagram of the structure of an electric motor involved in this utility model.
[0019] In the diagram: 1. Middle support section; 2. First support section; 3. Second support section; 4. Reinforcing member; 5. Stator; 6. Rotor; 7. Flange; 8. Bearing housing; 9. Circulation through hole. Detailed Implementation
[0020] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.
[0021] Example 1: As Figures 1-6 As shown, a shielding sleeve for an electric motor includes a shielding sleeve, characterized in that the shielding sleeve is a plastic shielding sleeve, the shielding sleeve includes a central support section 1, a first support section 2 and a second support section 3 located at both ends of the central support section 1, and a reinforcing member 4 disposed on the first support section 2 and / or the second support section 3, the central support section 1 being used to pass through the inner cavity of the stator 5 on the electric motor, the inner cavity of the central support section 1 being used to accommodate the rotor 6 on the electric motor, and the reinforcing member 4 being used to enhance the support performance of the shielding sleeve.
[0022] The difference between this technical solution and the prior art is that a plastic shielding sleeve is used, and a reinforcing member 4 is set on the plastic shielding sleeve. The main body of the reinforcing member 4 avoids the middle support section 1 of the stator 5, and only a small part of the end of the reinforcing member 4 is used to support the corresponding end of the stator 5. The plastic shielding sleeve can reduce eddy current loss. The reinforcing member 4 is used to enhance the support strength of the plastic shielding sleeve and improve the pressure bearing capacity of the plastic shielding sleeve, thereby improving the plastic shielding sleeve's wider application in shielded pumps and giving it better applicability.
[0023] Next, the above technical solution will be explained in detail:
[0024] In practical applications, the reinforcing member 4 is made of a material with high strength and high toughness. In this embodiment, the reinforcing member 4 is preferably made of stainless steel or carbon fiber.
[0025] In practical applications, the reinforcing member 4 consists of several reinforcing rings.
[0026] In this technical solution, the use of a reinforcing ring not only enhances the support and compressive strength of the corresponding part on the plastic shielding sleeve, but also facilitates the control of the axial length of the reinforcing member 4, and saves on the material consumption of the reinforcing member 4.
[0027] Further, in practical applications, the reinforcing member 4 is a plurality of reinforcing rings arranged independently and spaced apart, or the reinforcing member 4 is a continuous spiral reinforcing ring.
[0028] In the technical solution, as shown in Figure 2 when the reinforcing member 4 is a plurality of reinforcing rings arranged independently and spaced apart, the appropriate density is formed by controlling the spacing between adjacent reinforcing rings, and the appropriate support and reinforcement effect is achieved.
[0029] In the technical solution, as shown in Figure 3 when the reinforcing member 4 is a continuous spiral reinforcing ring, the appropriate axial length and the appropriate density are formed by stretching or compressing the reinforcing member 4, and the appropriate support and reinforcement effect is achieved.
[0030] In practical applications, as shown in Figure 5 the reinforcing member 4 can be a mesh reinforcing ring. By controlling the setting density of the mesh or the size of the mesh, the reinforcing ring achieves the appropriate support and reinforcement effect.
[0031] In practical applications, on the basis of the above-mentioned shapes of the reinforcing member 4, the projection of the reinforcing member 4 on the cross section is a circular ring or a radial concave-convex wave ring.
[0032] In the technical solution, when the projection of the reinforcing member 4 on the cross section is a radial concave-convex wave ring, the wave can be a circular arc wave or an angular wave. When the projection is a wave ring, the same ring has a larger support area, thereby making the plastic shielding sleeve have a stronger support strength.
[0033] In practical applications, the reinforcing member 4 provided in the first support section 2 is completely embedded in the wall of the first support section 2, and the wall thickness of the reinforcing member 4 is smaller than the wall thickness of the first support section 2; or the reinforcing member 4 provided in the first support section 2 is partially embedded in the first support section 2 and partially exposed to the periphery of the first support section 2.
[0034] In assembly, the stator 5 is moved from the outer end of the second support section 3 to the first support section 2 to be sleeved on the shielding sleeve, the outer diameter of the second support section 3 needs to be adapted to the inner diameter of the stator 5, and the outer diameter of the first support section 2 is not affected by the inner diameter of the stator 5. Therefore, the reinforcing member 4 on the first support section 2 can be completely embedded in the wall of the first support section 2, or can be partially embedded in the wall of the first support section 2 and partially exposed to the periphery of the wall of the first support section 2; or can be directly sleeved on the first support section 2. When the reinforcing member 4 is completely or partially embedded in the wall of the first support section 2, it is beneficial to reduce the number of parts and improve the assembly efficiency.
[0035] In actual application, the reinforcing member 4 arranged on the second supporting section 3 is completely embedded in the wall of the second supporting section 3, and the wall thickness of the reinforcing member 4 is smaller than the wall thickness of the second supporting section 3; or the reinforcing member 4 arranged on the second supporting section 3 is sleeved on the second supporting section 3.
[0036] In assembly, the stator 5 is moved to the shielding sleeve from the outer end of the second supporting section 3 to the direction of the first supporting section 2, therefore, the outer diameter of the second supporting section 3 needs to be adapted to the inner diameter of the stator 5. When the reinforcing member 4 of the second supporting section 3 is completely embedded in the wall of the second supporting section 3, in order to avoid the reinforcing member 4 protruding outwardly from the outer wall of the second supporting section 3 and facilitate the assembly of the stator 5, the wall thickness of the reinforcing member 4 is smaller than the wall thickness of the second supporting section 3. Or, the reinforcing member 4 of the second supporting section 3 is sleeved on the second supporting section 3, when the stator 5 needs to be assembled, the reinforcing member 4 of the second supporting section 3 is removed, and after the stator 5 is assembled in place, the reinforcing member 4 of the second supporting section 3 is sleeved on the second supporting section 3.
[0037] Embodiment 2: as shown in the accompanying drawings, the second technical subject of the utility model relates to a technical scheme: Figure 7
[0038] A motor comprises a stator 5, a rotor 6, and a shielding sleeve arranged between the stator 5 and the rotor 6, wherein the shielding sleeve is the shielding sleeve for the motor as described in Embodiment 1.
[0039] In actual application, the opening end of the shielding sleeve is provided with a flange 7, and the bottom end of the shielding sleeve is provided with a bearing seat 8, wherein the flange 7 and the bearing seat 8 are integrated structures of the shielding sleeve, and the bearing seat 8 is provided with a circulating through hole 9 axially penetrating through.
[0040] In the technical scheme, the shielding sleeve is provided with the integrated flange 7, thereby reducing the sealing ring between the shielding sleeve and the flange 7, which not only ensures the effect of preventing leakage, but also is beneficial to reducing the number of parts, reducing the assembly process, and improving the assembly efficiency.
[0041] In the technical scheme, the bottom end of the shielding sleeve is provided with the integrated bearing seat 8, and the bearing seat 8 is provided with the circulating through hole 9, and through the circulating through hole 9, part of the water in the pump body flows between the rotor 6 and the shielding sleeve, which is used for circulating heat dissipation of the rotor 6, the shielding sleeve, the stator 5, and the controller arranged outside the motor.
[0042] In the embodiment, the first supporting section 2 and the second supporting section 3 are both provided with the reinforcing member 4, and the reinforcing member 4 is integrated in the wall of the corresponding supporting section, in addition, the end of the two reinforcing members 4 (or one reinforcing member 4) towards the stator 5 extends towards the middle part of the stator 5, thereby supporting the two ends (or one end) of the stator 5.
[0043] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. In the above embodiments, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A shield sleeve for an electric machine comprising a shield sleeve tube, characterized in that The shielding sleeve is a plastic shielding sleeve, which comprises a middle supporting section (1), a first supporting section (2) and a second supporting section (3) respectively arranged at two ends of the middle supporting section (1), a reinforcing member (4) arranged on the first supporting section (2) and / or the second supporting section (3), the middle supporting section (1) is arranged in a cavity of a stator (5) of a motor, an inner cavity of the middle supporting section (1) is used for accommodating a rotor (6) of the motor, and the reinforcing member (4) is used for enhancing the supporting performance of the shielding sleeve.
2. The shield sleeve for an electric machine according to claim 1, characterized by The reinforcing member (4) is a stainless steel member or a carbon fiber member.
3. The shield sleeve for an electric machine according to claim 1, characterized by The reinforcing member (4) is a plurality of reinforcing rings.
4. The shield for an electric machine according to claim 3, characterized in that The reinforcing member (4) is a plurality of reinforcing rings arranged independently and at intervals, or the reinforcing member (4) is a continuous spiral reinforcing ring.
5. The shield for an electric machine according to claim 1, characterized in that The reinforcing member (4) is a mesh reinforcing ring.
6. The shield sleeve for an electric machine according to any one of claims 3 to 5, characterized in that The projection of the reinforcing member (4) on the cross section thereof is a circular ring or a radial concave-convex wave ring.
7. The shield for an electric machine according to claim 6, characterized in that The reinforcing member (4) arranged on the first supporting section (2) is completely embedded in the wall of the first supporting section (2), and the wall thickness of the reinforcing member (4) is smaller than the wall thickness of the first supporting section (2); or the reinforcing member (4) arranged on the first supporting section (2) is partially embedded in the wall of the first supporting section (2) and partially exposed to the periphery of the wall of the first supporting section (2).
8. The shield for an electric machine according to claim 6, characterized in that The reinforcing member (4) arranged on the second supporting section (3) is completely embedded in the wall of the second supporting section (3), and the wall thickness of the reinforcing member (4) is smaller than the wall thickness of the second supporting section (3); or the reinforcing member (4) arranged on the second supporting section (3) is sleeved on the second supporting section (3).
9. An electric machine comprising a stator (5), a rotor (6) and a shield sleeve (7) arranged between the stator (5) and the rotor (6), characterized in that The shielding sleeve is a plastic shielding sleeve, which comprises a middle supporting section (1), a first supporting section (2) and a second supporting section (3) respectively arranged at two ends of the middle supporting section (1), a reinforcing member (4) arranged on the first supporting section (2) and / or the second supporting section (3), the middle supporting section (1) is arranged in a cavity of a stator (5) of a motor, an inner cavity of the middle supporting section (1) is used for accommodating a rotor (6) of the motor, and the reinforcing member (4) is used for enhancing the supporting performance of the shielding sleeve.
10. The electric machine of claim 9, wherein The reinforcing member (4) is a stainless steel member or a carbon fiber member. The reinforcing member (4) is a plurality of reinforcing rings. The reinforcing member (4) is a plurality of reinforcing rings arranged independently and at intervals, or the reinforcing member (4) is a continuous spiral reinforcing ring. The reinforcing member (4) is a mesh reinforcing ring. The projection of the reinforcing member (4) on the cross section thereof is a circular ring or a radial concave-convex wave ring. The reinforcing member (4) arranged on the first supporting section (2) is completely embedded in the wall of the first supporting section (2), and the wall thickness of the reinforcing member (4) is smaller than the wall thickness of the first supporting section (2); or the reinforcing member (4) arranged on the first supporting section (2) is partially embedded in the wall of the first supporting section (2) and partially exposed to the periphery of the wall of the first supporting section (2). The reinforcing member (4) arranged on the second supporting section (3) is completely embedded in the wall of the second supporting section (3), and the wall thickness of the reinforcing member (4) is smaller than the wall thickness of the second supporting section (3); or the reinforcing member (4) arranged on the second supporting section (3) is sleeved on the second supporting section (3). The shielding sleeve is a plastic shielding sleeve, which comprises a middle supporting section (1), a first supporting section (2) and a second supporting section (3) respectively arranged at two ends of the middle supporting section (1), a reinforcing member (4) arranged on the first supporting section (2) and / or the second supporting section (3), the middle supporting section (1) is arranged in a cavity of a stator (5) of a motor, an inner cavity of the middle supporting section (1) is used for accommodating a rotor (6) of the motor, and the reinforcing member (4) is used for enhancing the supporting performance of the shielding sleeve. The reinforcing member (4) is a stainless steel member or a carbon fiber member. The reinforcing member (4) is a plurality of reinforcing rings. The reinforcing member (4) is a plurality of reinforcing rings arranged independently and at intervals, or the reinforcing member (4) is a continuous spiral reinforcing ring. The reinforcing member (4) is a mesh reinforcing ring. The projection of the reinforcing member (4) on the cross section thereof is a circular ring or a radial concave-convex wave ring. The reinforcing member (4) arranged on the first supporting section (2) is completely embedded in the wall of the first supporting section (2), and the wall thickness of the reinforcing member (4) is smaller than the wall thickness of the first supporting section (2); or the reinforcing member (4) arranged on the first supporting section (2) is partially embedded in the wall of the first supporting section (2) and partially exposed to the periphery of the wall of the first supporting section (2). The reinforcing member (4) arranged on the second supporting section (3) is completely embedded in the wall of the second supporting section (3), and the wall thickness of the reinforcing member (4) is smaller than the wall thickness of the second supporting section (3); or the reinforcing member (4) arranged on the second supporting section (3) is sleeved on the second supporting section (3). The shielding sleeve is a plastic shielding sleeve, which comprises a middle supporting section (1), a first supporting section (2) and a second supporting section (3) respectively arranged at two ends of the middle supporting section (1), a reinforcing member (4) arranged on the first supporting section (2) and / or the second supporting section (3), the middle supporting section (1) is arranged in a cavity of a stator (5) of a motor, an inner cavity of the middle supporting section (1) is used for accommodating a rotor (6) of the motor, and the reinforcing member (4) is used for enhancing the supporting performance of the shielding sleeve. The reinforcing member (4) is a stainless steel member or a carbon fiber member. The reinforcing member (4) is a plurality of reinforcing rings. The reinforcing member (4) is a plurality of reinforcing rings arranged independently and at intervals, or the reinforcing member (4) is a continuous spiral reinforcing ring. The reinforcing member (4) is a mesh reinforcing ring. The projection of the reinforcing member (4) on the cross section thereof is a circular ring or a radial concave-convex wave ring. The reinforcing member (4) arranged on the first supporting section (2) is completely embedded in the wall of the first supporting section (2), and the wall thickness of the reinforcing member (4) is smaller than the wall thickness of the first supporting section (2); or the reinforcing member (4) arranged on the first supporting section (2) is partially embedded in the wall of the first supporting section (2) and partially exposed to the periphery of the wall of the first supporting section (2). The reinforcing member (4) arranged on the second supporting section (3) is completely embedded in the wall of the second supporting section (3), and the wall thickness of the reinforcing member (4) is smaller than the wall thickness of the second supporting section (3); or the reinforcing member (4) arranged on the second supporting section (3) is sleeved on the second supporting section (3).