CN213717719U - Axial magnetic suspension positioning device - Google Patents

Abstract

The invention discloses an axial magnetic suspension positioning device which comprises a bushing, a shell, a probe and coil components, wherein the shell is connected to two axial sides of the bushing, the coil components are installed on the shell, the outer edge of a thrust disc on a rotor is positioned in a gap between the two coil components, the shell is also provided with the probe for detecting the axial movement of the thrust disc, and the probe is positioned on one side of the coil components. The invention has the beneficial effects that: the axial displacement of the rotor can be monitored in real time through the probe, so that the magnetic flux of the coil assembly is changed, the thrust disc is unevenly stressed, the rotor is reset in the axial direction, meanwhile, after the thrust disc is evenly stressed, the rotor is positioned in the axial direction, and in the axial positioning process of the whole rotor, the rotor does not contact any object, so that the high-rotating-speed work of the rotor is guaranteed.

Description

Axial magnetic suspension positioning device

Technical Field

The invention relates to a magnetic suspension supercharger, in particular to an axial magnetic suspension positioning device.

Background

The magnetic suspension supercharger has the advantages of high rotating speed and long service life, and has an obvious energy-saving effect compared with the existing turbocharging, for example, turbocharging on an automobile is difficult to achieve when the automobile runs at low speed, and the turbocharging bearing cannot support high-rotating-speed rotation when the automobile runs at high speed, so that the bearing is damaged, and inestimable risks are caused, and in the field of compressors, the conversion power density of the existing compressor is about 1:3, and the conversion power density of the magnetic suspension supercharger can reach more than 1:7, so that the energy consumption is saved.

In the case of a magnetic levitation supercharger, the rotor serves as the power take-off, the operating state of the rotor is of critical importance, and in order to ensure the reliability of the use of the magnetic levitation supercharger, the positioning of the rotor in the radial and axial directions must be ensured.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a non-contact axial magnetic suspension positioning device.

The purpose of the invention is realized by the following technical scheme: the utility model provides an axial magnetic suspension positioner, including the bush, a housing, probe and coil pack, the axial both sides of bush all are connected with the casing, install coil pack on the casing, the outer fringe of the thrust dish on the rotor is located the clearance between two coil packs, still install the probe that is used for detecting thrust dish axial displacement on the casing, the probe is located one side of coil pack, the end cover is still installed to the axial both sides of bush, and the end cover is located and corresponds between coil pack and the bush, form between the both ends lid and adjust the chamber, the outer fringe of thrust dish is located and adjusts the intracavity, and the thrust dish all has the clearance with corresponding the end cover in the axial direction.

Optionally, the casing is provided with an annular cavity, an outer ring of the annular cavity is connected with the bushing, an inner ring of the annular cavity is a convex ring, the coil assembly is located in the annular cavity, and the probe is mounted on the convex ring.

Optionally, the coil assembly includes a sealing filler and a coil, the coil is covered by the sealing filler, and the sealing filler is filled in the annular cavity of the housing.

Optionally, a groove is formed in the end face of the convex ring, a mounting hole is formed in the bottom of the groove, and a probe is mounted in the mounting hole.

Optionally, the clearance between the thrust disc and the corresponding end cover in the axial direction is 400 microns.

The invention has the following advantages: according to the axial magnetic suspension positioning device, the axial displacement of the rotor can be monitored in real time through the probe, so that the non-uniform stress of the thrust disc is realized by changing the magnetic flux of the coil assembly, the axial resetting of the rotor is realized, the rotor is positioned in the axial direction after the thrust disc is uniformly stressed, and the rotor does not contact any object in the whole axial positioning process of the rotor, so that the high-rotation-speed work of the rotor is ensured.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of A-A of FIG. 1;

FIG. 3 is a schematic structural view of the housing;

in the figure, 1-bushing, 2-shell, 3-coil, 4-sealing filler, 5-probe, 6-end cover, 7-adjusting cavity, 8-thrust disc, 9-annular cavity, 10-coil component, 11-convex ring and 12-notch.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that the products of the present invention conventionally lay out when in use, or orientations or positional relationships that are conventionally understood by those skilled in the art, which are merely for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, an axial magnetic levitation positioning apparatus includes a bushing 1, a housing 2, a probe 5 and a coil assembly 10, in this embodiment, the bushing 1 is a circular ring, and a step is disposed on the outer edges of two axial sides of the circular ring, so that a boss is formed on the bushing 1, the housing 2 is a revolving structure, the probe 5 is a commercially available product, and the coil assembly 10 is also a revolving structure.

In this embodiment, the two axial sides of the bushing 1 are both connected with the housing 2, the housing 2 is provided with the coil assembly 10, the outer edge of the thrust disc 8 on the rotor is located in the gap between the two coil assemblies 10, the housing 2 is further provided with the probe 5 for detecting the axial movement of the thrust disc 8, the probe 5 is located on one side of the coil assembly 10, the thrust disc 8 is installed on the rotor, when the thrust disc 8 moves in the axial direction, the rotor can be driven to move in the axial direction, in the working process of the magnetic levitation motor, when the rotor moves in the axial direction, the probe 5 can detect the axial displacement of the rotor, then the probe 5 transfers the data to the control system, then the control system changes the magnetic flux of the coil assembly 10, so that the thrust disc 8 is stressed unevenly, the thrust disc 8 moves in the axial direction, so that the rotor resets, and the axial positioning of the rotor is realized, further, end covers 6 are further installed on two axial sides of the bushing 1, the end covers 6 are located in the annular cavity 9, the end covers 6 are located between the corresponding coil assemblies 10 and the bushing 1, adjusting cavities 7 are formed between the two end covers 6, the outer edge of the thrust disc 8 is located in the adjusting cavities 7, gaps exist between the thrust disc 8 and the corresponding end covers 6 in the axial direction, the thrust disc 8 moves in the adjusting cavities 7, but the thrust disc 8 does not interfere with the end covers 6, and after the coil assemblies 10 are electrified, the end covers 6 can be magnetized, magnetic force is generated, along with the change of the size of the magnetic force, the stress of the thrust disc 8 is changed, the adjustment of axial displacement of the rotor is achieved, through adjustment, the thrust of the end covers 6 to the thrust disc 8 is equal, the rotor can be fixed in the axial direction at the moment, and axial positioning is achieved.

In this embodiment, the casing 2 is provided with the annular cavity 9, the outer ring of the annular cavity 9 is connected with the bushing 1, the inner ring of the annular cavity 9 is the convex ring 11, the coil assembly 10 is located in the annular cavity 9, the probe 5 is installed on the convex ring 11, further, the end surface of the convex ring 11 is provided with the groove 12, the groove bottom of the groove 12 is provided with the installation hole, the probe 5 is installed in the installation hole, and the axial lead of the probe 5 is flush with the axial lead of the rotor, so that the axial movement of the rotor can be better detected.

In this embodiment, the coil assembly 10 includes the sealing filler 4 and the coil 3, the coil 3 is wrapped by the sealing filler 4, and the sealing filler 4 is filled in the annular cavity 9 of the housing 2, the sealing filler 4 is a sealant, and the coil 3 can be plastically packaged in the annular cavity 9 by the sealing filler 4, so that the coil 3 and the housing 2 are fixedly mounted, of course, a through hole for threading is provided on the object, a lead is installed in the through hole, and the coil 3 is connected with an external power supply device through the lead.

In this embodiment, thrust disc 8 is 400 microns with the clearance that corresponds between the end cover 6 in the axial direction, when axial displacement takes place for the rotor, probe 5 just can detect this moment, thereby can be through changing the thrust size of end cover 6 to thrust disc 8, and make the rotor axial reset, consequently, the axial displacement volume of rotor belongs to small the removal, consequently, thrust disc 8 sets up to 400 microns with the clearance that corresponds between end cover 6 in the axial direction, can guarantee to be in the suspended state when the rotor rotates, thrust disc 8 does not take place to interfere with end cover 6, can guarantee again to make rotor axial positioning through adjusting.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims (5)

1. The axial magnetic suspension positioning device is characterized in that: including bush, casing, probe and coil pack, the axial both sides of bush all are connected with the casing, install on the casing the coil pack, the outer fringe of the thrust dish on the rotor is located two in the clearance between the coil pack, still install on the casing and be used for detecting the probe of thrust dish axial displacement, the probe is located one side of coil pack, the end cover is still installed to the axial both sides of bush, just the end cover is located and corresponds the coil pack with between the bush, two form the regulation chamber between the end cover, the outer fringe of thrust dish is located adjust the intracavity, just the thrust dish on the axial direction with correspond the end cover all has the clearance.

2. The axial magnetic levitation positioning device as recited in claim 1, wherein: the shell is provided with an annular cavity, the outer ring of the annular cavity is connected with the bushing, the inner ring of the annular cavity is a convex ring, the coil assembly is located in the annular cavity, and the probe is installed on the convex ring.

3. The axial magnetic levitation positioning device as recited in claim 1, wherein: the coil assembly comprises a sealing filler and a coil, the coil is wrapped by the sealing filler, and the sealing filler is filled in an annular cavity of the shell.

4. An axial magnetic levitation positioning device as recited in claim 2, wherein: the end face of the convex ring is provided with a groove, the bottom of the groove is provided with a mounting hole, and a probe is mounted in the mounting hole.

5. The axial magnetic levitation positioning device as recited in claim 1, wherein: the clearance between the thrust disc and the corresponding end cover in the axial direction is 400 microns.

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