WO2021129260A1 - 水下电机的永磁体转子结构、水下电机和水下设备 - Google Patents

水下电机的永磁体转子结构、水下电机和水下设备 Download PDF

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Publication number
WO2021129260A1
WO2021129260A1 PCT/CN2020/130284 CN2020130284W WO2021129260A1 WO 2021129260 A1 WO2021129260 A1 WO 2021129260A1 CN 2020130284 W CN2020130284 W CN 2020130284W WO 2021129260 A1 WO2021129260 A1 WO 2021129260A1
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WO
WIPO (PCT)
Prior art keywords
permanent magnet
magnet rotor
adhesive layer
rotor structure
underwater
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2020/130284
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English (en)
French (fr)
Inventor
魏建仓
陈超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deepinfar Ocean Technology Inc
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Deepinfar Ocean Technology Inc
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Filing date
Publication date
Application filed by Deepinfar Ocean Technology Inc filed Critical Deepinfar Ocean Technology Inc
Priority to US17/784,824 priority Critical patent/US12191715B2/en
Priority to JP2022534145A priority patent/JP7373075B2/ja
Priority to KR1020227020153A priority patent/KR20220100941A/ko
Priority to EP20904608.5A priority patent/EP4050764A4/en
Publication of WO2021129260A1 publication Critical patent/WO2021129260A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/278—Surface mounted magnets; Inset magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2786—Outer rotors
    • H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/2789—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2791—Surface mounted magnets; Inset magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/03—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/03—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
    • H02K15/035—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets on the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/12—Impregnating, moulding insulation, heating or drying of windings, stators, rotors or machines
    • H02K15/121—Impregnating, moulding insulation, heating or drying of windings, stators, rotors or machines of cores
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
    • H02K5/132—Submersible electric motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

Definitions

  • This application relates to the field of electric motors, in particular to permanent magnet rotor structures of underwater motors, underwater motors and underwater equipment.
  • the external rotor motor has the characteristics of space saving, compact design and beautiful appearance. Due to the special working environment of underwater motors, it is generally necessary to perform anti-corrosion and wear-resistant treatment on the permanent magnet rotor structure to protect the permanent magnets of the rotor.
  • the purpose of this application is to provide a permanent magnet rotor structure of an underwater motor, which has excellent anti-corrosion and wear-resistant properties and can work for a long time in a special environment.
  • a permanent magnet rotor structure for an underwater motor including: a rotor end cover; a plurality of permanent magnets arranged on the inner circumferential surface of the rotor end cover; and a protective attachment structure arranged on the Multiple permanent magnet surfaces.
  • the adhesive layer has a smooth surface.
  • the adhesive layer includes acrylic structural adhesive.
  • the adhesive layer seals the plurality of permanent magnets.
  • the protective attachment structure is made of non-magnetic material.
  • the protective attachment structure includes: a non-magnetic stainless steel steel mesh, a mesh woven of nylon cloth and anticorrosive threads.
  • the non-magnetic stainless steel mesh includes a stainless steel mesh with a model of 316L.
  • the thickness of the 316L stainless steel mesh is 0.01-0.07 mm.
  • an underwater motor including any permanent magnet rotor structure as described above.
  • it also relates to an underwater device, including the underwater motor as described above.
  • the non-magnetic stainless steel steel mesh, nylon cloth and anticorrosive wire mesh have good mechanical properties and good ductility, they can protect the permanent magnet from damage by external hard particles.
  • the attachment structure has certain chemical corrosion resistance properties, and can also be combined with the adhesive layer to form an anticorrosive protection structure for the permanent magnet. But making an adhesive layer that contains a protective attachment structure will produce bubbles. An adhesive layer with bubbles on the surface, the bubbles themselves can be regarded as a kind of channel. The sea water can contact the permanent magnet through the channel formed by the air bubbles, thereby corroding the permanent magnet.
  • the adhesive layer with a smooth surface as described above can effectively isolate the contact between seawater and the permanent magnet, thereby preventing seawater from corroding the permanent magnet structure.
  • the adhesive layer with a smooth surface can also make the protective attachment structure adhere more firmly, and prevent the protective attachment structure from falling off due to the existence of air bubbles.
  • the above-mentioned underwater equipment includes: underwater photographing equipment carrier, underwater propeller, etc.
  • the underwater equipment is equipped with the underwater motor. Because the permanent magnet rotor structure of the underwater motor has anti-corrosion and wear resistance characteristics, the underwater motor can work in a harsh working environment. In this way, compared with the underwater motor in the prior art, the underwater motor involved in the present application has a longer service life.
  • Figure 1 shows a photo of a related art motor permanent magnet rotor structure
  • Figure 2 shows a photo of the permanent magnet rotor structure of a related art motor after being used for a period of time
  • Fig. 3 shows a permanent magnet rotor structure of a motor according to an exemplary embodiment of the present application
  • Fig. 4A shows a photo of a permanent magnet rotor structure of a motor according to an exemplary embodiment of the present application
  • Fig. 4B shows a photograph of a permanent magnet rotor structure of a motor according to an exemplary embodiment of the present application after being tested.
  • Fig. 5 shows a manufacturing method of a permanent magnet rotor structure of a motor according to an exemplary embodiment of the present application.
  • connection mentioned in this application is not otherwise clearly stipulated or limited, and should be understood in a broad sense, and it may be a direct connection, or it may replace the original direct connection.
  • orientation or positional relationship indicated by the “upper, lower, left, right, upper end, and lower end” described in this application is based on the orientation and positional relationship shown in the drawings, and is only for describing the application and simplifying The description does not indicate or imply that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application.
  • first, second, first, second, “again”, and “further” are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the indicated technical features quantity. Therefore, the features defined with “first” and “second” may explicitly or implicitly include one or more of the features. In the description of the present application, “multiple” means two or more than two, unless otherwise specifically defined.
  • Figure 1 shows a related art motor rotor structure.
  • the anti-corrosion treatment technology of the outer rotor underwater motor includes spraying an anti-corrosion layer on the surface of the permanent magnet.
  • the motor is working in an underwater environment, it is inevitable that hard objects with grit will enter the position between the motor rotor and the stator, causing the anti-corrosion coating on the surface of the permanent magnet of the rotor to be worn out.
  • this embodiment relates to a permanent magnet rotor structure of an underwater motor.
  • Fig. 3 shows a permanent magnet rotor structure of a motor according to an exemplary embodiment of the present application.
  • the permanent magnet rotor structure of the underwater motor of this embodiment includes a motor permanent magnet rotor end cover 302, a plurality of permanent magnets 304 of the motor, an adhesive layer 306, and a protective attachment structure 308. The four of them are connected to each other. Together, the permanent magnet rotor structure of the underwater motor of this embodiment is constructed. As shown in FIG. 3, the permanent magnet rotor structure in this embodiment can be compared with the permanent magnet structure of the motor in the prior art shown in FIG. 1, and it can be seen that the two structures are obviously different.
  • the permanent magnet rotor end cover 302 of the motor is a part of the generalized motor.
  • the rotor end cover 302 uses a wide range of materials, such as aluminum alloy, stainless steel, engineering plastic PVC, or ABS rubber.
  • the rotor end cover 302 is made of stainless steel, and its shape and appearance are similar to a hollow cylinder. One end of the rotor end cover 302 can be sealed and connected to other structures of the motor, and the other end, that is, perpendicular to the view direction, is open. In this embodiment, the rotor end cover 302 can be formed by machining or other methods. With regard to the rotor structure of the motor, those skilled in the art are already familiar with this, and will not be repeated here. It should be noted that, in the motor rotor structure shown in FIG. 3, the size and shape of the end cover of the permanent magnet rotor structure can be changed according to actual needs, and the production method can also be adjusted according to actual needs.
  • a plurality of permanent magnets 304 are part of a generalized motor, which are arranged on the inner circumferential surface (inner wall) of the permanent magnet rotor end cover 302 of the motor, and are evenly distributed.
  • Permanent magnets generally refer to magnets that can retain high remanence for a long time in an open circuit state, such as natural magnets and artificial magnets.
  • the plurality of permanent magnets 304 are alloy permanent magnets, rare earth permanent magnet materials, samarium cobalt or ferrite permanent magnets, and the like.
  • the motor stator is stationary in this embodiment.
  • the stator is composed of an iron core, a stator winding and a base.
  • the adhesive layer structure 306 shown is acrylic structural adhesive.
  • the selected acrylic structural adhesive can replace traditional adhesive materials. And compared to mechanical fixation, the use of acrylic structural adhesive makes the design and manufacture more flexible and lower cost.
  • the adhesive layer 306 is formed by curing the acrylic structural adhesive.
  • the adhesive layer 306 has very good waterproof performance and anti-chemical corrosion performance, and after reaching a certain thickness, it also has good mechanical properties.
  • the production of the adhesive layer 306 is to completely coat the surface of the permanent magnet with acrylic structural adhesive to cover the entire permanent magnet structure without obvious defects. It should be noted that the adhesive layer 306 can also be formed by curing other types of structural adhesives, such as modified acrylic structural adhesives.
  • the protective attachment structure 308 in the permanent magnet rotor structure of the underwater motor in this embodiment is fixed to the surface of a plurality of permanent magnets 304 by the adhesive force of the adhesive layer 306.
  • 316L stainless steel mesh is selected for the protective attachment structure 308.
  • the selected 316L stainless steel mesh 308 has a mesh number of 350-400 mesh and a thickness of 0.01-0.07 mm.
  • the 316L stainless steel mesh belongs to titanium steel, which has excellent corrosion resistance, high temperature resistance and creep resistance.
  • the protective attachment structure 308 combined with the adhesive layer structure 306 can protect the permanent magnet from being corroded by seawater and being damaged by hard objects in a specific working environment.
  • the 316L stainless steel mesh used as the protective attachment structure 308 has no magnetism, does not generate magnetic force with the permanent magnet, and will not affect the operation of the entire permanent magnet rotor structure.
  • a layer of acrylic structural adhesive is coated on the stainless steel mesh 308 and placed on the uncured adhesive layer structure.
  • the acrylic structural adhesive in the adhesive layer structure is completely integrated with the structural adhesive on the steel mesh, and the colloid completely covers the entire stainless steel mesh, that is, the acrylic structural adhesive infiltrates the stainless steel mesh.
  • the specific operation method is to use a professional glue brushing tool to coat the acrylic structural adhesive on the stainless steel mesh in a small amount of times, observe the status of the steel mesh in real time, and try to ensure it is flat. And fill up the defects at any time.
  • a permanent magnet rotor structure as shown in FIG. 3 is formed.
  • the curing time of the acrylic structure adhesive is generally 3-5 minutes.
  • the underwater motor containing the permanent magnet rotor structure in this embodiment was placed in seawater at 80 degrees Celsius for continuous operation for 168 hours, which is compared with the water in the prior art.
  • the permanent magnet rotor structure of the lower motor is severely corroded, and the structure involved in this embodiment has not undergone significant corrosion.
  • the present application provides a low-cost permanent magnet rotor structure of another example embodiment.
  • the permanent magnet rotor structure in this embodiment.
  • the structure includes: a rotor end cover, a plurality of permanent magnets, an adhesive layer, a protective attachment structure, and an adhesive layer with a smooth surface.
  • the rotor end cover of this embodiment is a part of an underwater propeller.
  • the rotor end cover is mainly made of carbon fiber material, which has the characteristics of light weight and wear resistance.
  • the adhesive layer in the permanent magnet rotor structure of this embodiment is formed by curing acrylic structural adhesive.
  • the above-mentioned adhesive layer structure is also provided with a protective attachment structure.
  • the material of the protective attachment structure is a non-magnetic 316L stainless steel mesh.
  • the mesh of the non-magnetic 316L stainless steel steel mesh is 350-400 meshes.
  • the 316L stainless steel mesh can effectively isolate hard objects such as grit, and at the same time, it can have enough pores so that the acrylic structural adhesive of the adhesive layer can fully infiltrate the 316L stainless steel.
  • the net makes the two closely integrated.
  • the magnetic force is applied to the surface of the adhesive layer, causing the surface bubbles of the adhesive layer and the stainless steel mesh to be squeezed out, and The viscose layer is compacted naturally.
  • the acrylic structural adhesive of the adhesive layer is cured, the steel sheet will not adhere to the adhesive layer because of the pre-attached transparent tape or sprayed release agent.
  • the stainless steel sheet can be easily removed or the steel sheet can be demolded. . At this time, a very smooth adhesive layer with a smooth surface without visible air bubbles in this example was obtained.
  • the anti-corrosion structure is an adhesive layer on the surface of the permanent magnet, and some anti-corrosion nets or cloths are arranged in the adhesive layer. In the process of making the anti-corrosion structure as described above, large areas of air bubbles may appear on the surface of the net and cloth after the glue is brushed.
  • Fig. 4A shows a photo of a rotor structure of a motor according to an exemplary embodiment of the present application.
  • the underwater motor including the motor rotor structure provided in the present application in FIG. 4A is placed in a seawater environment of 80 degrees Celsius for 168 hours.
  • the underwater motor included in the clock underwater equipment provided in this embodiment includes a permanent magnet rotor structure with a smooth surface. After the test, the permanent magnet rotor structure was not corroded. Subsequently, the structure continued to work in the sand pool for 168 hours. See FIG. 4B. After the test, the permanent magnet rotor structure of the motor in the exemplary embodiment of the present application has no obvious scratches.
  • the structure uses acrylic structural glue to bond the whole piece of stainless steel mesh to the surface of the permanent magnet of the rotor, and the end is sealed by glue, and the magnetic force of the magnet is used to completely eliminate the bubbles in the glue layer. In this way, the cost can be reduced, and the influence of bubble defects on the adhesion of the stainless steel mesh can be avoided, so that the rotor is completely sealed and anti-corrosive, while also being wear-resistant.
  • the invention is applied to the rotor structure of a motor.
  • the motor rotor is also a rotating component in the motor, which is used to realize the conversion device between electrical energy and mechanical energy and mechanical energy and electrical energy.
  • the motor rotor is divided into an inner rotor transmission mode and an outer rotor transmission mode.
  • the underwater motor mostly uses the motor rotor of the outer rotor rotation mode, that is, the outer rotor motor rotor of this embodiment is applied.
  • the permanent magnet rotor structure of the underwater motor has good anti-corrosion and abrasion resistance under special working conditions, thereby prolonging the service life of the motor, reducing production costs, and saving resource waste.
  • the application also provides a permanent magnet rotor structure of a motor according to another embodiment. This will be described below with reference to the drawings.
  • the permanent magnet rotor structure includes: a rotor end cover 302, a plurality of permanent magnets 304, an adhesive layer 306, a protective attachment structure 308, and an adhesive layer 310 with a smooth surface.
  • Fig. 5 shows a manufacturing method of a permanent magnet rotor structure of a motor according to an exemplary embodiment of the present application.
  • a rotor end cover including a plurality of permanent magnets is prepared.
  • an adhesive layer is coated on the surface of a plurality of permanent magnets.
  • the adhesive layer 306 is made of silicone structural adhesive. Silicone structural glue has good bonding performance, sealing performance and corrosion resistance.
  • the cured silicone structural adhesive layer 306 is not only waterproof and corrosion resistant, but also has excellent mechanical properties, such as creep resistance and impact resistance.
  • a protective attachment structure is placed on the adhesive layer.
  • the material of the protective attachment structure 308 built into the silicone structure adhesive layer 306 is polyamide fiber cloth, commonly known as nylon cloth.
  • nylon cloth is a synthetic fiber cloth with light weight, corrosion resistance, good ductility and low cost.
  • the nylon cloth and the silicone structural adhesive have good wettability, which can make the two merge with each other without destroying each other's chemical structure, and jointly play the role of protecting the permanent magnet structure.
  • the silicone structure adhesive layer 306 of the permanent magnet rotor structure in this embodiment has a smooth surface adhesive layer 310.
  • a PVC hard sheet is placed on its surface, and then a permanent magnet or iron block is placed on the surface of the PVC hard sheet.
  • the PVC hard sheet is different from the stainless steel sheet in Example 2. It does not require demolding pretreatment before placing it, and can be directly placed on the surface of the silicone structural adhesive, saving time.
  • a permanent magnet iron block is placed on the surface of the PVC hard sheet, and the permanent magnet iron block is used to interact with the multiple permanent magnets 304 built in the rotor end cover 302 to generate a magnetic force, which acts on the adhesive layer 306 and the protective attachment structure 308 in a radial direction.
  • the excess glue and the surface gas of the glue layer can be exhausted.
  • coating structural glue on the permanent magnet rotor structure of an underwater motor can effectively prevent corrosion of the motor, increase the protective attachment structure, and effectively prevent the permanent magnet from being damaged by hard objects in the working environment.
  • the smooth surface structure of the adhesive layer mentioned in this application indirectly protects the permanent magnet.
  • various materials with low cost and excellent mechanical properties can be selected and used in this application to mass-produce the permanent magnet rotor structure described in this application.

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  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

本申请提供一种水下电机的永磁体转子结构、水下电机和水下设备，涉及电机领域。该水下电机永磁体转子结构包括：转子端盖；多个永磁体，设置在所述转子端盖的内圆周表面；保护附着结构，设置在所述多个永磁体表面；黏胶层，将所述保护附着结构粘附于所述多个永磁体表面且覆盖所述保护附着结构。本申请所提供永磁体转子结构具有防腐耐磨特性，可以延长包含这种永磁体转子结构的水下电机的使用寿命。

Description

无标题 技术领域
本申请涉及电机领域，具体涉及水下电机的永磁体转子结构、水下电机和水下设备。
背景技术
常用水下设备中，外转子电机具有节省空间，设计紧凑且美观的特点。由于水下电机工作环境特殊，一般需要对永磁体转子结构进行防腐耐磨处理，以对转子永磁体加以保护。
在所述背景技术部分公开的上述信息，仅用于加强对本申请的背景的理解，因此它可以包括不构成对本领域普通技术人员一致的现有技术的信息。
技术问题
本申请旨在提供一种水下电机的永磁体转子结构，该结构具有优异的防腐耐磨性能，可以在特殊环境中长时间工作。
技术解决方案
根据本申请的一方面，提供一种水下电机的永磁体转子结构，包括：转子端盖；多个永磁体，设置在所述转子端盖的内圆周表面；保护附着结构，设置在所述多个永磁体表面。
根据本申请一些实施例，所述黏胶层具有光滑表面。
根据本申请一些实施例，所述黏胶层的表面无可见气泡。
根据本申请一些实施例，所述黏胶层包括丙烯酸结构胶。
根据本申请一些实施例，所述黏胶层密封所述多个永磁体。
根据本申请一些实施例，所述保护附着结构由非磁性材料构成。
根据本申请一些实施例，所述保护附着结构包括：非磁性不锈钢钢网，尼龙布和防腐线织成的网。
根据本申请一些实施例，所述的非磁性不锈钢钢网，包括型号为316L的不锈钢钢网。
根据本申请一些实施例，所述316L不锈钢钢网的厚度范围是0.01-0.07毫米。
按照本申请的另一方面，还涉及一种水下电机，包括如上所述的任一种永磁体转子结构。
按照本申请的另一方面，还涉及一种水下设备，包括如上所述的水下电机。
有益效果
如上所述，因为，非磁性的不锈钢钢网、尼龙布和防腐线织成的网，均具有良好的力学性能，良好的延展性，可以起到保护永磁体不被外界坚硬颗粒损坏的作用。并且所述附着结构有一定的耐化学腐蚀特性，亦可以与黏胶层结合，构成永磁体的防腐保护结构。但制作包含有保护附着结构的黏胶层，会产生气泡。表面有气泡的黏胶层，气泡本身可以视为一种通道。海水可以通过气泡所形成的通道与永磁体接触，进而腐蚀永磁体。如上所述具有光滑表面的黏胶层，可以有效地隔绝海水与永磁体的接触，从而防止海水腐蚀所述永磁体结构。同时，具有光滑表面的黏胶层还可以使所述保护附着结构粘接更为牢固，避免因气泡的存在导致所述保护附着结构的脱落。
如上所述的水下设备，包括：水下摄影设备载体，水下推进器等。所述水下设备，配置有所述水下电机。因为所述水下电机的永磁体转子结构具有防腐耐磨特性，使得该种水下电机可以在苛刻的工作环境中工作。这样，相较于现有技术中的水下电机，本申请所涉及的水下电机具有较长的使用寿命。
附图说明
本申请一部分的附图用来提供对本申请的进一步理解，本申请的示意性实施例及说明用于解 释本申请，并不构成对本申请的不当限定。在附图当中：
图1示出相关技术的电机永磁体转子结构的照片；
图2示出相关技术的电机永磁体转子结构在使用一段时间后的照片；
图3示出根据本申请示例实施例的电机永磁体转子结构；
图4A示出根据本申请示例实施例的电机永磁体转子结构的照片；
图4B示出根据本申请示例实施例的电机永磁体转子结构经过测试后的照片。
图5示出根据本申请示例实施例的电机永磁体转子结构的制作方法。
附图标记列表
302  转子端盖。
304  永磁体
306  黏胶层
308  保护附着结构
310  黏胶层
本发明的最佳实施方式
以下结合附图和实施例，对本申请的具体实施方式进行更加详细的说明，以便能够更好的理解本申请的方案以及其各个方面的优点。然而，以下描述的具体实施方式和实施例仅是说明的目的，而不是对本申请的限制。
本申请中所述的“连接”，并非另有明确的规定或限定，应作广义理解，可以是直接相连，也可以是替换了原始直接连接方式。并且本申请所描述的‘上’‘下’‘左’‘右’‘上端’‘下端’等指示的方位或者位置关系基于附图所示的方位和位置关系，仅是为了描述本申请和简化描述，而不是指示或者暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”“首先”“其次”“再次”“进一步”等仅用于描述目的，而不能理解为指示或者暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含的包括一个或者多个所述特征。在本申请的描述中，“多个”的含义是两个或者两个以上，除非另有明确具体的限定。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“设置”、“粘接”、“粘贴”、“相连”应做广义的理解，例如可以是固定连接，也可以是可拆卸连接，或者一体连接。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
下文的公开提供了许多不同的实施方式或例子用来实现本申请的不同结构。为了简化本申请的公开，下文中对特定的例子的部件和设置进行描述。当然，他们仅仅为示例，并且目的不在于限制本申请。此外，本申请提供了的各种特定的工艺和/或材料的例子，但是本领域普通技术人员可以意识到其它工艺的应用和/或其他材料的使用。
图1示出相关技术的电机转子结构。
参见图1，目前，外转子水下电机的防腐处理技术包括在永磁体表面喷涂一种防腐层。电机在水下环境工作时，不可避免，有砂砾的硬物进入到电机转子和定子之间位置，导致转子永磁体表面的防腐涂层被磨坏。
参见图2，当永磁体表面的防腐层被划破时，永磁体没有防腐层的保护的部分，会被海水腐蚀。
另，现有技术中，另一种防腐耐磨的方案，即通过不锈钢焊接，将整个永磁体转子结构密封在不锈钢壳体内，从而达到保护电机永磁体转子结构的目的。这类技术的缺陷在于制作成本 很高，对工艺的要求也非常严格，不适用于低成本的娱乐级产品。而且，一旦出现技术缺陷，例如焊接密封有漏洞，整体的焊接保护都会失效。
有鉴于此，本实施例涉及一种水下电机永磁体转子结构。以下结合附图对本申请的示例实施例进行说明。
图3示出根据本申请一个示例实施例的电机永磁体转子结构。
参见图3，为本实施例的水下电机的永磁体转子结构，包括电机永磁体转子端盖302、电机多个永磁体304、黏胶层306、保护附着结构308，他们四者相连接在一起后，构成本实施例的水下电机永磁体转子结构。如图3所示，本实施例中的永磁体转子结构，可以与图1中所示的现有技术的电机永磁体结构作对比，可以看出两者结构的明显不同。
参见图3，电机永磁体转子端盖302，为广义电机的一部分。
根据本申请示例实施例，转子端盖302所用到的材料比较广泛，例如铝合金、不锈钢、工程塑料PVC或ABS橡胶等。
在本实施例转子端盖302由不锈钢构成，形状外观类似于空心圆柱体。转子端盖302的一端可密封并与电机其他结构相连，另一端，即垂直于视图方向，为开放式。该实施例中转子端盖302可以通过机加工制作成型或其他方式制作成型。关于电机转子结构，本领域技术人员对此已经熟知，此处不再赘述。需要说明的是，图3中所示的电机转子结构中，永磁体转子结构的端盖尺寸和形状等都可以根据实际需要进行变化，制作生产方法也可以根据实际需求进行调整。
参见图3，多个永磁体304为广义电机的一部分，设置在电机永磁体转子端盖302的圆周内表面(内壁)上，均匀分布。永磁体通常指在开路状态下能够长期保留较高剩磁的磁体，例如天然的磁石和人造的磁体。本实施例中，水下用电机的永磁体转子结构中，多个永磁体304为合金永磁体、稀土永磁体材料、钐钴或铁氧永磁体等。
电机定子在本实施例中静止不动，该定子由铁芯、定子绕组和机座三部分组成。
参见图3，在本实施例中，所示黏胶层结构306，选用丙烯酸结构胶。
根据示例实施例，所选的丙烯酸结构胶，可以替代传统的胶黏材料。并且相对于机械固定，丙烯酸结构胶的使用使设计制造更加灵活，成本较低。
黏胶层306，即为丙烯酸结构胶固化后形成。黏胶层306具有非常优良的防水性能及防化学腐蚀性能，在达到一定厚度后，还具有良好的力学性能。制作黏胶层306，即为将丙烯酸结构胶完全涂覆在永磁体表面，覆盖整个永磁体结构，无明显缺陷即可。需要说明的是，黏胶层306也可以由其他种类的结构胶固化形成，例如改性后的丙烯酸酯结构胶等。
参见图3，本实施例中的水下电机的永磁体转子结构中的保护附着结构308，通过黏胶层306的粘结力固定到多个永磁体304表面的。在本实施例中，保护附着结构308选用316L不锈钢钢网。所选316L不锈钢钢网308的目数为350-400目，厚度为0.01-0.07毫米。
在本实施例中，316L不锈钢钢网属于钛钢，具有优秀的耐腐蚀性、耐高温和抗蠕变性能。保护附着结构308结合黏胶层结构306，可以保护永磁体在特定工作环境中，不被海水腐蚀，不被硬物等破坏。并且316L不锈钢钢网作为保护附着结构308不具有磁性，不与永磁体发生磁力作用，不会对整个永磁体转子结构的工作造成影响。
在本实施例中，选好保护附着结构316L不锈钢钢网308之后，在不锈钢钢网308上涂覆一层丙烯酸结构胶，并将其放置在未固化的黏胶层结构上。使黏胶层结构中的丙烯酸结构胶与钢网上的结构胶完全融合，并使胶体完全覆盖整个不锈钢钢网，即丙烯酸结构胶浸润不锈钢钢网。
为使丙烯酸结构胶完全浸润不锈钢钢网，具体操作方法为，利用专业的刷胶工具，少量多次的将丙烯酸结构胶涂覆在不锈钢钢网上，实时观察钢网状态，尽量使其保证平整，并随时填补缺陷。
最后，在本实施例中，待丙烯酸结构胶黏胶层结构306自然固化后，便形成如图3所示的永磁体转子结构，丙烯酸结构胶的固化时间一般为3-5分钟。
为验证本实施例制作的结构具有防腐耐磨的特性，将含有本实施例中的永磁体转子结构的水下电机，放入80摄氏度海水中持续运行168小时，对比于现有技术中的水下电机永磁体转子结构的严重腐蚀程度，本实施例涉及的结构未发生明显腐蚀。
本申请提供另一示例实施例的一种低成本的永磁体转子结构。
本实施例中的永磁体转子结构。该结构包括：转子端盖、多个永磁体、黏胶层、保护附着结构以及具有光滑表面的黏胶层。
本实施例的转子端盖为一种水下推进器的一部分。该转子端盖主要材质为碳纤维材质，具有质轻、耐磨特性。
本实施例的永磁体转子结构中的黏胶层，选用丙烯酸结构胶固化后所形成的。上述黏胶层结构中还设置有保护附着结构，在本实施例中，保护附着结构的材料选用非磁性的316L不锈钢钢网。
非磁性316L不锈钢钢钢网的目数为350-400目，这样，316L不锈钢钢网可以有效地隔绝砂砾等坚硬物，同时可以有足够的孔隙使黏胶层的丙烯酸结构胶充分浸润316L不锈钢钢网，使两者紧密结合。
当黏胶层完全浸润316L不锈钢钢网时，在未固化的黏胶层表面放置厚度为0.01-0.05毫米厚的有磁性的不锈钢钢片若干块，尽量根据黏胶层内壁曲率半径放置。需要说明的是，放置不锈钢钢片之前，在不锈钢钢片的两面都贴上一层透明胶带，或者喷涂一层脱模剂，然后再将不锈钢钢片轻放置在未固化的黏胶层表面。这样，在后续工序中，可以较为简便地移除钢片。根据一些实施例，一些类别的不锈钢钢片本身具有磁性，会与永磁体相互作用产生磁力，该磁力施加在黏胶层表面，使得黏胶层及不锈钢钢网的表面气泡被挤出，并将黏胶层自然压实。待黏胶层的丙烯酸结构胶固化后，因为预粘贴透明胶带或喷涂脱模剂，使得钢片不会和黏胶层粘合，可以容易的拿掉不锈钢钢片，或将钢片脱模下来。此时得到本实施例中的十分光滑并且没有可见气泡的光滑表面黏胶层。
上述实施例中的永磁体转子结构中，防腐结构为永磁体表面一层黏胶层，并且黏胶层内设置一些防腐的网或者布。在如上述防腐结构的制作过程中，刷胶后的网和布的表面可能会出现大面积的气泡。黏胶层表面气泡的存在，使得黏胶层内置的防腐布或者网附着力不够，导致防腐布或网极易脱落；另外，气泡相当于一种通道，海水容易通过该通道接触到电机转子结构永磁体，腐蚀永磁体；同时，砂砾等坚硬物也会因为气泡缺陷，直接或间接破坏防腐结构。图4A示出根据本申请示例实施例的电机转子结构照片。
为验证本实施例中永磁体转子结构具有防腐耐磨性能，将包含图4A中本申请所提供的电机转子结构的水下电机，置于80摄氏度海水环境中工作168小时。本实施例中提供的该钟水下设备所包括的水下电机，包括具有光滑表面的永磁体转子结构，测试结束后，该永磁体转子结构未见腐蚀。随后该结构在沙池中继续工作168小时，参见图4B，测试结束后，本申请示例实施例中的电机永磁体转子结构未见有明显划痕。
该结构利用丙烯酸结构胶将整片不锈钢钢网粘接在转子永磁体表面，端部靠胶来密封，并且利用磁铁的磁力，将胶层的气泡完全排除。这样，既能够降低成本，也能够避免气泡缺陷对不锈钢钢网附着力的影响，从而使转子彻底密封防腐同时还耐磨。
本发明应用于电机转子结构当中。电机转子也是电机中的旋转部件，其用来实现电能与机械能以及机械能与电能的转换装置。电机转子分为内转子传动方式和外转子传动方式，水下电机多用外转子转动方式的电机转子，即应用本实施例的外转子电机转子。水下电机的永磁体转子结构，在特殊的工作环境下，具有良好的防腐耐磨性能，从而延长电机的使用寿命，降低生产成本，节约资源浪费等。
本申请还提供另一实施例的电机永磁体转子结构。以下结合附图，对其进行说明。
参见图3，根据示例实施例，永磁体转子结构包括：转子端盖302、多个永磁体304,、黏胶层306、保护附着结构308以及具有光滑表面的黏胶层310。
图5示出根据本申请示例实施例的电机永磁体转子结构的制作方法。
参见图5，S501中，准备包括多个永磁体的转子端盖。
参见图5，在S503中，准备保护附着结构。
参见图5，在S505中，在多个永磁体表面涂覆黏胶层。
参见图3，本实施例中，黏胶层306选用硅酮结构胶。硅酮结构胶胶体具有良好的粘接性能、密封性能及耐腐蚀性能。固化后的硅酮结构胶黏胶层306不仅防水耐腐蚀，同时还具有优良的力学性能，如抗蠕变抗冲击性能。
参见图5，在S507中，在黏胶层上放置保护附着结构。
参见图3，本实施例中，硅酮结构胶黏胶层306内置的保护附着结构308的材料为聚酰胺纤维布，俗称尼龙布。尼龙布是一种合成纤维布，质轻耐腐蚀，延展性好，造价低廉。并且尼龙布与硅酮结构胶浸润性好，可以使两者相互融合，又不破坏彼此化学结构，共同发挥保护永磁体结构的作用。
参见图5，在S509中，在保护附着结构上放置硬片。
参见图5，在S511中，通过硬片向保护附着结构施加压力。
如图3所示，本实施例中的永磁体转子结构的硅酮结构胶层306具有光滑表面黏胶层310。在本实施例中，硅酮结构胶306完全浸润尼龙布308后，在硅酮结构胶306未固化时，放置PVC硬片在其表面，然后在PVC硬片表面放置永磁体或者铁块。首先PVC硬片区别于实施例2中的不锈钢钢片，其不需要在放置之前进行脱模预处理，可以直接放置在硅酮结构胶表面，节省时间。其次，PVC硬片表面放置永磁体铁块，利用永磁体铁块和转子端盖302内置的多个永磁体304相互作用产生磁力，该磁力刚好径向作用在黏胶层306及保护附着结构308上，可以将多余的胶和黏胶层表面气体排出。
待硅酮结构胶完全固化后，取下外置永磁体或铁块以及PVC硬片，就得到如图3所示的永磁体转子结构。
同理于上述实施例，通过实验，验证本实施例中的结构的防腐耐磨特性。
以上举例说明本申请的三个实施例。不同于上述背景技术，根据本申请，在水下电机永磁体转子结构上涂覆结构胶，可以有效地防止电机腐蚀，增加保护附着结构，有效地防止工作环境中硬物对永磁体的破坏。另外，本申请中提到的黏胶层光滑表面结构，间接地保护永磁体。此外，本申请可以选择各种低成本、优良力学性能的材料搭配组合使用，批量生产本申请所述永磁体转子结构。
最后应说明的是，以上所述仅为本申请的优选实施例而已，并不用于限制本申请，尽管参照前述实施例对本申请进行详细的说明，对于本领域的技术人员来说，其依然可以对前述各实施例的技术方案进行修改，或者对其中部分技术特征进行等同替换。凡在本申请的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (11)

  1. 一种用于水下电机的永磁体转子结构，其特征在于，包括：
    转子端盖；
    多个永磁体，设置在所述转子端盖的内圆周表面；
    保护附着结构，设置在所述多个永磁体表面；
    黏胶层，将所述保护附着结构粘附于所述多个永磁体表面且覆盖所述保护附着结构。
  2. 如权利要求1所述的永磁体转子结构，其特征在于，所述黏胶层具有光滑表面。
  3. 如权利要求1所述的永磁体转子结构，其特征在于，所述黏胶层的表面无可见气泡。
  4. 如权利要求1所述的永磁体转子结构，其特征在于，所述黏胶层包括丙烯酸结构胶。
  5. 如权利要求1所述的永磁体转子结构，其特征在于，所述黏胶层密封所述多个永磁体。
  6. 如权利要求1所述的永磁体转子结构，其特征在于，所述保护附着结构由非磁性材料构成。
  7. 如权利要求1所述的永磁体转子结构，其特征在于，所述保护附着结构包括非磁性不锈钢钢网、尼龙布或防腐线织成的网。
  8. 如权利要求7所述的永磁体转子结构，其特征在于，所述非磁性不锈钢钢网包括316L不锈钢钢网。
  9. 如权利要求8所述的永磁体转子结构，其特征在于，所述316L不锈钢钢网的厚度范围是0.01-0.07毫米。
  10. 一种水下电机，其特征在于，包括如权利要求1至9中任一项所述的永磁体转子结构。
  11. 一种水下设备，包括如权利要求9所述的水下电机。
PCT/CN2020/130284 2019-12-24 2020-11-20 水下电机的永磁体转子结构、水下电机和水下设备 Ceased WO2021129260A1 (zh)

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US17/784,824 US12191715B2 (en) 2019-12-24 2020-11-20 Permanent magnet rotor structure for underwater motor, underwater motor and underwater equipment
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KR1020227020153A KR20220100941A (ko) 2019-12-24 2020-11-20 수중 모터의 영구자석 로터 구조, 수중 모터와 수중 설비
EP20904608.5A EP4050764A4 (en) 2019-12-24 2020-11-20 PERMANENT MAGNET ROTOR STRUCTURE FOR UNDERWATER MOTOR, UNDERWATER MOTOR AND UNDERWATER APPARATUS

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