Underwater propulsion motor and rim propeller
By using Hastelloy shielding and potting filler layers in underwater propulsion motors, the problems of high loss and corrosion of stator and rotor shielding materials have been solved, enabling efficient, stable and durable operation of the motor.
Patent Information
- Application Number
- CN202423300635.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2034-12-30
AI Technical Summary
The existing stator and rotor shielding materials of underwater propulsion motors have high electrical and thermal conductivity, which leads to high system losses and low efficiency. They are also prone to corrosion in corrosive seawater environments, affecting motor performance and lifespan. Furthermore, special structural materials are costly, have complex manufacturing processes, and are easily worn.
A Hastelloy shielding layer, including a first and a second Hastelloy shielding layer, is used between the rotor and the stator and is fixedly connected by welding. The gap and potting filler layer are used to improve the motor's corrosion resistance, reduce magnetic field interference and heat transfer, and enhance mechanical protection.
It effectively reduces motor energy loss, improves operating efficiency and stability, extends lifespan, reduces costs, ensures stable motor performance in corrosive environments, reduces wear and noise, and enhances reliability and durability.
Smart Images
Figure CN223957352U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to underwater motor technical field, specifically, underwater propulsion motor and rim propeller. BACKGROUND
[0002] At present, the stator and rotor shielding layer of underwater propulsion motor for shaftless rim propeller is mainly metal material layer such as aluminum alloy, copper alloy and special structure material layer such as graphene layer and nanometer material layer. However, the metal material layer has high conductivity and high thermal conductivity, so that the motor has large system loss in the working process, thereby reducing the efficiency of the motor, and the metal material layer is easy to be corroded in the strong corrosive seawater environment, affecting the performance and service life of the motor. The process manufacturing of special structure material layer is complex, the cost is high, and the performance and service life of the motor are affected by the wear in water. SUMMARY
[0003] The main purpose of the utility model is to provide an underwater propulsion motor and rim propeller to at least solve the problems of large system loss, low efficiency, poor performance and low service life of the underwater propulsion motor for rim propeller.
[0004] According to one aspect of the utility model, an underwater propulsion motor is provided, comprising:
[0005] A rotor assembly comprises a rotor body;
[0006] A stator assembly comprises a stator body, the stator body is sleeved on the rotor body, and a hastelloy shielding layer is arranged between the stator body and the rotor body.
[0007] Further, the hastelloy shielding layer comprises a first hastelloy shielding layer and a second hastelloy shielding layer, the first hastelloy shielding layer is arranged on the outer circular surface of the rotor body, and the second hastelloy shielding layer is arranged on the inner circular surface of the stator body.
[0008] Further, the first hastelloy shielding layer and the second hastelloy shielding layer have a stator-rotor matching gap, and the width of the stator-rotor matching gap is 1.5-4mm.
[0009] Further, the thickness of the first hastelloy shielding layer is 0.4-1mm, and the thickness of the second hastelloy shielding layer is 0.4-1mm.
[0010] Further, the rotor body comprises a rotor core, the rotor core and the first hastelloy shielding layer have a first gap, and a glue filling layer is arranged in the first gap.
[0011] Further, the stator body comprises a stator core, and a second Hastelloy shielding layer is arranged between the stator core and the second gap.
[0012] Further, the first Hastelloy shielding layer is fixedly connected with the rotor body by welding; and / or,
[0013] The second Hastelloy shielding layer is fixedly connected with the stator body by welding.
[0014] On the other hand, the utility model also provides a wheel rim propeller, the wheel rim propeller includes the underwater propulsion motor.
[0015] Further, the wheel rim propeller comprises a fairing and a rotating ring, the rotating ring is movably installed on the fairing, and the rotating ring and the fairing have an installation gap, and the underwater propulsion motor is installed in the installation gap.
[0016] Further, the rotor assembly is fixedly connected with the rotating ring, and the stator assembly is fixedly connected with the fairing.
[0017] In the utility model, by setting the Hastelloy shielding layer between the rotor assembly and the stator assembly, the conductivity and the thermal conductivity of the Hastelloy shielding layer are relatively moderate, the problems of large motor system loss and low efficiency caused by high conductivity and high thermal conductivity of the metal material layer are overcome, unnecessary energy loss can be effectively reduced, and motor operating efficiency is improved; on the other hand, the Hastelloy has excellent corrosion resistance, compared with the metal material layer that is easily corroded, the motor performance can be greatly guaranteed stable in the extremely corrosive seawater environment, and the motor life is prolonged.Moreover, compared with the special structure material layer that is complex in process manufacturing, high in cost and easy to wear in water, the Hastelloy shielding layer is easier to realize in the manufacturing process, the cost is controllable, and the motor performance is not easily affected by wear, and the problems of large underwater propulsion motor system loss, low efficiency, poor performance and short service life for the wheel rim propeller are effectively solved. BRIEF DESCRIPTION OF DRAWINGS
[0018] The drawings described herein are used to provide further understanding of the utility model, and constitute a part of the utility model, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute improper limitation to the utility model.In the drawings:
[0019] Figure 1 Part of the underwater propulsion motor disclosed in the utility model embodiment is a sectional view;
[0020] Figure 2 The structure of the wheel rim propeller disclosed in the utility model embodiment is a schematic view.
[0021] wherein the above figures include the following reference signs:
[0022] 10, rotor assembly; 11, rotor body; 20, stator assembly; 21, stator body; 30, hastelloy shield; 31, first hastelloy shield; 32, second hastelloy shield; 33, stator-rotor fit clearance; 41, cowling; 42, rotating ring; 43, paddle; 44, bearing; 45, post; 46, mounting base. DETAILED DESCRIPTION
[0023] It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with embodiments.
[0024] It should be noted that the terms used herein are only intended to describe specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that the terms "comprise" and / or "include" as used herein indicate the presence of the features, steps, operations, devices, components and / or combinations thereof.
[0025] The relative arrangement of components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present application unless otherwise specifically stated. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in proportion to the actual proportions. Techniques, methods and devices known to those skilled in the relevant art can not be discussed in detail, but under appropriate circumstances, the techniques, methods and devices should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
[0026] Referring to Figure 1 As shown, according to the embodiments of the present application, an underwater propulsion motor is provided, which comprises a rotor assembly 10 and a stator assembly 20. Wherein the rotor assembly 10 comprises a rotor body 11; the stator assembly 20 comprises a stator body 21, the stator body 21 is sleeved on the rotor body 11, and a hastelloy shield 30 is arranged between the stator body 21 and the rotor body 12.
[0027] Specifically, the Hastelloy shielding layer 30 includes a first Hastelloy shielding layer 31 and a second Hastelloy shielding layer 32. The first Hastelloy shielding layer 31 is arranged on the outer circular surface of the rotor body 11, and the second Hastelloy shielding layer 32 is arranged on the inner circular surface of the stator body 21.
[0028] The Hastelloy shielding layer 30 of the present embodiment is made of Hastelloy material composed of elements such as iron, nickel, chromium, molybdenum, tungsten, etc. The Hastelloy shielding layer 30 has excellent corrosion resistance. In underwater environments, especially in complex water conditions with high salt content and humidity, it can effectively prevent the stator and rotor from being corroded, significantly prolong the service life of the underwater propulsion motor, reduce the cost of component damage and maintenance due to corrosion, and ensure the stable performance of the motor during long-term underwater operation. The Hastelloy has a certain shielding effect on the magnetic field, which can reduce the mutual interference of the magnetic field between the stator and rotor. During motor operation, the interaction of the magnetic field between the stator and rotor will produce some unnecessary losses and electromagnetic interference. The Hastelloy shielding layer 30 can effectively isolate the magnetic field between the stator and rotor, making the magnetic field distribution more uniform, thereby improving the efficiency and performance of the motor, reducing electromagnetic noise and vibration, etc. The Hastelloy has high strength and toughness, and can withstand the mechanical stress and impact force generated during the operation of the stator and rotor. In the underwater propulsion motor, the stator and rotor will be subjected to a large force under the action of high-speed rotation and complex hydrodynamic force. The Hastelloy shielding layer 30 can serve as an effective protective layer to prevent the stator and rotor from being deformed, worn or damaged due to external forces, ensuring the normal operation of the motor. The thermal conductivity of Hastelloy is relatively low, which can reduce the heat transfer between the stator and rotor to a certain extent. During motor operation, the stator and rotor will generate heat. If the heat transfer is too fast, it may cause the motor temperature to be too high, affecting the performance and life of the motor. The Hastelloy shielding layer 30 can act as a heat shield, helping to maintain the stator and rotor within an appropriate temperature range, improving the reliability and stability of the motor.
[0029] Further, the first Inconel shield layer 31 and the second Inconel shield layer 32 have a stator-rotor matching gap 33 with a width of 1.5-4 mm. The stator-rotor matching gap 33 can provide sufficient rotation space for the rotor assembly 10 to prevent the rotor assembly 10 from rubbing against the stator assembly 20 during rotation, ensuring normal operation of the underwater propulsion motor and improving the reliability of the underwater propulsion motor. A suitable width of the stator-rotor matching gap 33 can maintain the magnetic field distribution between the rotor assembly 10 and the stator assembly 20, making the magnetic field distribution more uniform, improving the electromagnetic performance of the underwater propulsion motor, and reducing electromagnetic noise and vibration. The stator-rotor matching gap 33 is also conducive to heat dissipation and medium flow. Water can flow in the stator-rotor matching gap 33 to carry away the heat generated by the rotor and stator, preventing overheating of the underwater propulsion motor. When the stator-rotor matching gap 33 between the rotor assembly 10 and the stator assembly 20 is greater than 4 mm, the magnetic field coupling effect will be weakened, resulting in a decrease in the output torque and power density of the underwater propulsion motor, which cannot meet the power requirements and will increase the volume of the entire underwater propulsion motor. When the stator-rotor matching gap 33 is less than 1.5 mm, even a small vibration will cause the rotor assembly 10 to directly contact the stator assembly 20, causing serious mechanical wear and possibly damaging the rotor assembly 10 and the stator assembly 20, making the underwater propulsion motor unable to operate normally. Therefore, the width of the stator-rotor matching gap 33 in the embodiment is preferably 3 mm, which can ensure that the rotor assembly 10 and the stator assembly 20 do not mechanically rub against each other and have good electromagnetic coupling state, and can achieve heat dissipation of the stator and the rotor.
[0030] Further, the thickness of the first Hastelloy shielding layer 31 is 0.4-1 mm, and the thickness of the second Hastelloy shielding layer 32 is 0.4-1 mm. In this embodiment, by setting the thickness of the first Hastelloy shielding layer 31 and the second Hastelloy shielding layer 32 to be within the range of 0.4-1 mm, the Hastelloy shielding layer can effectively shield the magnetic field between the stator and the rotor, reduce the mutual interference of the magnetic field, and make the magnetic field distribution more uniform, thereby improving the efficiency and performance of the motor and reducing electromagnetic noise and vibration problems. The stator and the rotor can be provided with good mechanical protection to prevent deformation, wear or damage of the stator and the rotor due to external forces, and can also withstand the mechanical stress and impact force generated during the operation of the stator and the rotor, ensuring the normal operation of the motor. Under the premise of ensuring the shielding effect and mechanical performance, the material cost of the shielding layer and the overall weight of the motor will not be excessively increased, achieving a good balance between performance and cost, which is conducive to the popularization and application of underwater propulsion motors. The thermal conductivity of Hastelloy is relatively low, and the appropriate thickness can adjust the heat transfer between the stator and the rotor to a certain extent, which helps to maintain the stator and the rotor within the appropriate temperature range, improves the reliability and stability of the motor, and does not cause abnormal heat transfer due to excessive thickness or thinness. When the thickness of the Hastelloy shielding layer 30 is less than 0.4 mm, it may not be able to effectively shield the magnetic field between the stator and the rotor, the magnetic field interference is large, the magnetic field distribution is not uniform, which will reduce the efficiency and performance of the motor, increase electromagnetic noise and vibration problems, and affect the normal operation of the motor. Thin shielding layer is difficult to withstand the mechanical stress and impact force generated during the operation of the stator and the rotor, and is prone to deformation, rupture and other situations, which cannot provide sufficient mechanical protection for the stator and the rotor, increasing the risk of damage to the stator and the rotor. When the thickness of the Hastelloy shielding layer 30 is greater than 1 mm, the excessive thickness will significantly increase the material consumption of the Hastelloy shielding layer, thereby significantly increasing the manufacturing cost of the motor, which is not conducive to the economy and market competitiveness of the underwater propulsion motor. Although the thick shielding layer can enhance the shielding effect, it may also excessively affect the magnetic field distribution between the stator and the rotor, resulting in weak magnetic field coupling, affecting the output torque and power density of the motor, and reducing the performance of the motor. Therefore, the thickness of the first Hastelloy shielding layer 31 is preferably 0.5 mm, and the thickness of the second Hastelloy shielding layer 32 is preferably 0.4 mm, which can not only ensure the effective shielding of the magnetic field between the stator and the rotor, provide reliable mechanical protection for the stator and the rotor, and maintain good heat dissipation performance and appropriate thermal conductivity, but also can meet the high-efficiency and stable operation of the motor while reasonably controlling the material cost and the weight of the motor. By reducing the thickness of the Hastelloy shielding layer 30, the motor loss can be reduced on the basis of ensuring certain electromagnetic shielding performance, and the material loss can also be reduced. Taking a propulsion motor with an output power of 300 kW as an example, through simulation calculation, compared with other alloy materials such as Inconel718, the motor loss is reduced by about 30%, which greatly improves the efficiency.
[0031] Further, the rotor body 11 includes a rotor core, and a first gap is provided between the rotor core and the first Hastelloy shielding layer 31, and a glue filling layer is arranged in the first gap. The stator body 21 includes a stator core, and a second gap is provided between the stator core and the second Hastelloy shielding layer 32, and a glue filling layer is arranged in the second gap. By arranging the glue filling layer in the first gap between the rotor core and the first Hastelloy shielding layer 31 and in the second gap between the stator core and the second Hastelloy shielding layer 32, the glue filling layer can fill the first gap between the rotor core and the first Hastelloy shielding layer 31 and the second gap between the stator core and the second Hastelloy shielding layer 32, so that the connection between the components is more closely and stably, and the relative displacement between the components due to vibration, impact and other factors during the operation of the motor is prevented, thereby improving the stability and reliability of the entire motor structure. The glue filling layer has certain heat conduction performance, which can play a good heat conduction role between the stator and rotor cores and the Hastelloy shielding layer, helping to more effectively transfer the heat generated by the stator and rotor cores during operation to the shielding layer and the surrounding environment, thereby improving the heat dissipation efficiency of the motor, avoiding overheating of the motor due to heat accumulation, and affecting the performance and service life of the motor. The glue filling layer can reduce the propagation path of electromagnetic interference to a certain extent, and has a certain isolation and shielding effect on the electromagnetic field generated by the stator and rotor cores, further enhancing the electromagnetic compatibility of the motor, reducing the influence of electromagnetic leakage and external electromagnetic interference on the motor, and making the electromagnetic performance of the motor more stable. The glue filling layer usually has good insulation performance, which can effectively prevent the stator and rotor cores from generating electrical faults such as leakage and short circuit due to contact or too close distance with the Hastelloy shielding layer, thereby improving the insulation level and safety of the motor, especially in underwater environment, good insulation performance is crucial for the normal operation of the motor. During the operation of the motor, vibration and noise are inevitable, and the glue filling layer can play a role in buffering and damping, absorbing and dissipating part of the vibration energy, reducing the propagation of vibration and noise, thereby reducing the noise level during the operation of the motor and improving the working environment comfort and service life of the equipment. Further, the first Hastelloy shielding layer 31 and the rotor body 11 are fixedly connected by welding; and / or, the second Hastelloy shielding layer 32 and the stator body 21 are fixedly connected by welding. The welding can ensure that the first Hastelloy shielding layer 31 and the rotor body 11 and the second Hastelloy shielding layer 32 and the stator body 21 are closely attached, effectively enhancing the stability of the shielding layer, reducing the electromagnetic interference fluctuation caused by looseness or displacement, thereby ensuring the efficient and stable operation of the underwater propulsion motor, improving the reliability and durability of the motor as a whole, and enhancing the integrity of the stator and rotor structure, so that they work better in complex underwater working conditions.
[0032] In another aspect, the application also discloses a wheel rim propeller, which comprises the underwater propelling motor.
[0033] Referring to Figure 2 As shown in the drawings, the wheel rim propeller comprises a fairing 41 and a rotating ring 42, the rotating ring 42 is movably installed on the fairing 41, and the rotating ring 42 and the fairing 41 have an installation gap therebetween, and the underwater propelling motor is installed in the installation gap.
[0034] Further, the rotor assembly 10 is fixedly connected with the rotating ring 42, and the stator assembly 20 is fixedly connected with the fairing 41. When the rotor assembly 10 rotates relative to the stator assembly 20, the rotor assembly 10 will drive the rotating ring 42 to rotate due to the fixed connection between the rotor assembly 10 and the rotating ring 42.
[0035] Further, the wheel rim propeller further comprises a paddle 43, a bearing 44, a stand 45 and a mounting base 46. The paddle 43 is fixedly connected with the rotating ring 42, the bearing 44 can be used for the rotation of the rotor assembly 10, and when the rotor assembly 10 rotates to drive the rotating ring 42 to rotate, the paddle 43 will rotate together with the rotating ring 42, so that the wheel rim propeller can provide power for waterborne equipment such as ships. The stand 45 is fixedly connected with the fairing 41, and the stand 45 is rotatably connected with the mounting base 46, so that the wheel rim propeller can adjust the direction during operation, thereby realizing the steering of the waterborne equipment such as ships.
[0036] For the convenience of description, spatial relative terms such as "above", "upper", "top", "upper", etc. can be used herein to describe the spatial positional relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawings is inverted, the device described as "above" or "above" other devices or structures will be positioned "below" or "below" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated by 90 degrees or in other orientations), and the spatial relative description used herein is interpreted accordingly.
[0037] In addition, it should be noted that the use of "first", "second", etc. to define parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as limiting the protection scope of the utility model.
[0038] The above are only preferred embodiments of the present application, and are not used to limit the present application, and for those skilled in the art, the present application can have various changes and modifications. 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. An underwater propulsion motor, characterized by The application relates to a rotor assembly (10) comprising a rotor body (11); a stator assembly (20) comprising a stator body (21) sleeved on the rotor body (11), wherein a Hastelloy shielding layer is arranged between the stator body (21) and the rotor body (11). The Hastelloy shielding layer comprises a first Hastelloy shielding layer (31) arranged on the outer circular surface of the rotor body (11) and a second Hastelloy shielding layer (32) arranged on the inner circular surface of the stator body (21). The first Hastelloy shielding layer (31) and the second Hastelloy shielding layer (32) have a rotor-stator matching gap (33) with a width of 1.5-4 mm.
2. The underwater propulsion motor of claim 1, wherein, The thickness of the first Hastelloy shielding layer (31) is 0.4-1 mm, and the thickness of the second Hastelloy shielding layer (32) is 0.4-1 mm.
3. The underwater propulsion motor of claim 2, wherein, The rotor body (11) comprises a rotor core, and a first gap is arranged between the rotor core and the first Hastelloy shielding layer (31), wherein a glue filling layer is arranged in the first gap.
4. The underwater propulsion motor of claim 2, wherein, The stator body (21) comprises a stator core, and a second gap is arranged between the stator core and the second Hastelloy shielding layer (32), wherein a glue filling layer is arranged in the second gap.
5. The underwater propulsion motor of claim 2, wherein, The first Hastelloy shielding layer (31) and the rotor body (11) are fixedly connected through welding; and / or 6. The underwater propulsion motor of claim 2, wherein, The second Hastelloy shielding layer (32) and the stator body (21) are fixedly connected through welding.
7. The underwater propulsion motor of claim 2, wherein, The rim propeller comprises the underwater propelling motor as claimed in any one of claims 1 to 7. The rim propeller comprises a fairing (41) and a rotating ring (42) movably installed on the fairing (41), wherein the rotating ring (42) and the fairing (41) have an installation gap, and the underwater propelling motor is installed in the installation gap.
8. A rim propulsor, characterized by, The rotor assembly (10) is fixedly connected with the rotating ring (42), and the stator assembly (20) is fixedly connected with the fairing (41).
9. The rim propulsor of claim 8, wherein, 10. The rim propulsor of claim 9, wherein,