Magnetic suspension high-speed motor displacement sensor stator filling and sealing device

Abstract

The utility model relates to the technical field of displacement sensor stator filling and sealing, and discloses a magnetic suspension high-speed motor displacement sensor stator filling and sealing device which comprises a filling and sealing base, a center column matched with the inner diameter of a displacement sensor is arranged on the filling and sealing base, and a filling and sealing gland is arranged on the upper end face of the displacement sensor. The encapsulation gland is connected with the top of the encapsulation base; the encapsulation base, the displacement sensor and the encapsulation gland are respectively provided with a base bolt hole, a displacement sensor bolt hole and a gland bolt hole, the bolt holes are respectively positioned on the encapsulation base, the displacement sensor and the encapsulation gland, and the components are fixedly assembled through bolt connection. The sealing performance and the stability of the magnetic suspension motor displacement sensor are ensured, and the influence of external environmental factors on the sensor is prevented; the problems of bubbles, less paint hanging amount and the like possibly existing in a traditional paint dipping method are solved, the potting quality is improved, and the performance and reliability of the sensor are ensured.

Description

Technical Field

[0001] The present application relates to the technical field of stator potting of displacement sensors, and in particular to a stator potting device for a magnetically suspended high-speed motor displacement sensor. Background Art

[0002] As a new type of motor technology, magnetic levitation motor has the advantages of no contact, no wear, high efficiency, etc. It has been widely used in high-speed trains, aerospace, industrial automation and other fields. Displacement sensor is an important component of magnetic levitation motor, which is used to monitor the displacement change of the motor in real time to achieve precise control and operation.

[0003] At present, the potting device of the magnetic suspension motor displacement sensor mainly adopts immersion painting. However, this method has some problems, such as the immersion painting effect is not ideal, and it is easy to have the defect of insufficient paint, which leads to the performance degradation of the sensor; the anti-interference ability is poor and it is easy to be affected by external electromagnetic interference; the reliability is low, and it is easy to have aging and inaccurate position detection after long-term use.

[0004] In order to solve the above problems, the present invention proposes a novel potting device for a magnetic suspension motor displacement sensor. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the present application provides a stator potting device for a magnetically suspended high-speed motor displacement sensor.

[0007] (II) Technical solution

[0008] In order to solve the above problems, the present application provides the following technical solutions: a stator potting device for a magnetic suspension high-speed motor displacement sensor, comprising: a potting base, the potting base is provided with a central column matching the inner diameter of the displacement sensor, the upper end surface of the displacement sensor is provided with a potting gland, and the potting gland is connected to the top of the potting base;

[0009] The potting base, displacement sensor and potting gland are respectively provided with base bolt holes, displacement sensor bolt holes and gland bolt holes. The bolt holes are respectively located on the potting base, displacement sensor and potting gland, and the components are fixed and assembled by bolt connection.

[0010] Preferably, the displacement sensor lead-out port is used as a potting port for injecting potting material.

[0011] Preferably, the assembly between the potting base and the displacement sensor and between the displacement sensor and the potting gland is fastened by at least four bolts passing through the bolt threads of the displacement sensor.

[0012] Preferably, the contact surfaces of the potting base and the potting gland with the displacement sensor are provided with sealing grooves to enhance the sealing effect.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the present application provides a stator potting device for a magnetic suspension high-speed motor displacement sensor, which has the following beneficial effects:

[0015] 1. The stator potting device of the magnetic levitation high-speed motor displacement sensor ensures the sealing and stability of the magnetic levitation motor displacement sensor and prevents the influence of external environmental factors on the sensor; solves the problems of bubbles and small amount of paint that may exist in the traditional dipping method, improves the potting quality, and ensures the performance and reliability of the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a stator potting device for a magnetic levitation high-speed motor displacement sensor according to the present application.

[0017] In the figure: 1. Potting base; 2. Displacement sensor; 3. Potting cover; 4. Potting port; 5. Base bolt hole; 6. Displacement sensor bolt hole; 7. Cover bolt hole; 8. Sealing groove. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] See also Figure 1 The present application provides a new technical solution: a stator potting device for a magnetic suspension high-speed motor displacement sensor, comprising a potting base 1, a center column is provided on the potting base 1 to match the inner diameter of the displacement sensor 2, when the displacement sensor 2 is potted, the displacement sensor 2 is installed on the center column on the potting base 1, and a potting gland 3 is provided on the upper end surface of the displacement sensor 2, and the potting gland 3 is connected to the top of the potting base 1;

[0020] The potting base 1 is provided with a base bolt hole 5, the displacement sensor 2 is provided with a displacement sensor bolt thread hole 6, and the potting gland 3 is provided with a gland bolt hole 7. The base bolt hole 5, the displacement sensor bolt thread hole 6 and the gland bolt hole 7 are in corresponding positions, and the potting base 1 and the displacement sensor 2 can be fixed together by bolts, and the potting gland 3 and the displacement sensor 2 can be fixed together by bolts.

[0021] In some embodiments, the lead-out port of the displacement sensor 2 serves as a potting port 4 for injecting potting material.

[0022] In some embodiments, the potting base 1 and the potting cover 3 are made of PA66 material, which has advantages in high-precision processing, insulation, heat resistance, chemical resistance and self-lubrication. The processing accuracy of the base 1 and the cover 3 ensures close fit with the displacement sensor 2, thereby improving the quality and reliability of potting.

[0023] In some embodiments, a two-component epoxy resin containing non-abrasive fillers is used as a potting material during the potting process to provide high-performance insulation and heat transfer capabilities, which can well protect the core parts in the displacement sensor stator assembly. During motor operation, the displacement sensor stator can play a more accurate position detection function, ensuring the efficient operation of the magnetic levitation high-speed motor.

[0024] In some embodiments, the connection between the potting base 1 and the displacement sensor 2 and the connection between the displacement sensor 2 and the potting gland 3 are respectively fastened by at least 4 bolts through the bolt thread holes 6 of the displacement sensor.

[0025] In some embodiments, the contact surfaces of the potting base 1 and the potting gland 3 with the displacement sensor 2 are respectively provided with sealing grooves 8 to enhance the sealing effect.

[0026] The process of potting the displacement sensor 2 using the potting device is as follows:

[0027] First, the potting base 1 and the displacement sensor 2 are assembled together by bolts, and then the potting gland 3 and the displacement sensor 2 are assembled together by bolts to ensure that the potting base 1 and the potting gland 3 are tightly matched with the displacement sensor 2;

[0028] Preheat the assembled sensor components at 80°C for 2 hours to optimize the fluidity and curing effect of the potting material.

[0029] Place the preheated component on the operating table, and pour epoxy resin through the potting port 4 until it is flush with the potting port. After standing for 10 minutes, check and add epoxy resin until there is no sinking phenomenon and then enter the curing process. After curing is completed, the potted displacement sensor 2 can be disassembled and removed from the potting base 1.

[0030] The potting device adopts a modular design. Some parts of the potting mold can be replaced according to displacement sensors of different sizes and shapes to achieve rapid adaptation and reuse. The assembly structure is simple, disassembly and assembly are convenient and quick, and can be reused. The special material of the potting mold can prevent the potting epoxy resin from adhering to the potting device.

[0031] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A stator potting device for a magnetically suspended high-speed motor displacement sensor, characterized in that: include: A potting base, wherein the potting base is provided with a central column matching the inner diameter of the displacement sensor, and the upper end surface of the displacement sensor is provided with a potting gland, and the potting gland is connected to the top of the potting base; The potting base, displacement sensor and potting gland are respectively provided with base bolt holes, displacement sensor bolt holes and gland bolt holes. The bolt holes are respectively located on the potting base, displacement sensor and potting gland, and the components are fixed and assembled by bolt connection.

2. The stator potting device of a magnetic suspension high-speed motor displacement sensor according to claim 1 is characterized in that: The displacement sensor lead-out port is used as a potting port for injecting potting material.

3. The stator potting device of a magnetic suspension high-speed motor displacement sensor according to claim 1 is characterized in that: The assembly between the potting base and the displacement sensor and between the displacement sensor and the potting gland is fastened by at least four bolts through the bolt threads of the displacement sensor.

4. The stator potting device of a magnetic suspension high-speed motor displacement sensor according to claim 1 is characterized in that: The contact surfaces of the potting base and the potting gland with the displacement sensor are provided with sealing grooves to enhance the sealing effect.

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