WO2020125103A1 - 一种用于磁悬浮轴承的径向与轴向的组合传感器 - Google Patents

一种用于磁悬浮轴承的径向与轴向的组合传感器 Download PDF

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Publication number
WO2020125103A1
WO2020125103A1 PCT/CN2019/106742 CN2019106742W WO2020125103A1 WO 2020125103 A1 WO2020125103 A1 WO 2020125103A1 CN 2019106742 W CN2019106742 W CN 2019106742W WO 2020125103 A1 WO2020125103 A1 WO 2020125103A1
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WO
WIPO (PCT)
Prior art keywords
rotor
sensor
axial
radial
boss portion
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Application number
PCT/CN2019/106742
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English (en)
French (fr)
Inventor
林英哲
刘淑云
吴立华
董继勇
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南京磁谷科技有限公司
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Application filed by 南京磁谷科技有限公司 filed Critical 南京磁谷科技有限公司
Publication of WO2020125103A1 publication Critical patent/WO2020125103A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness

Definitions

  • the invention relates to a combined radial and axial sensor for magnetic suspension bearings.
  • the radial and axial displacement changes of the rotor 1 require two sensors (see FIG. 2).
  • Four radial displacement sensors are evenly distributed on the circumference of the rotor 1 to detect the radial direction of the rotor position.
  • An axial displacement sensor is installed at one end of the rotor 1 to detect the axial position of the rotor. Using two sensors will increase the axial installation space of the rotor 1 and increase the axial length of the rotor.
  • the present invention is to provide a combined radial and axial sensor for a magnetic suspension bearing in order to solve the above-mentioned problems in the prior art.
  • a combined radial and axial sensor for a magnetic levitation bearing including a rotor, a displacement sensor and a circular sensor mounting seat, a boss portion is provided on the rotor, and the boss The end of the part is a conical surface structure that contracts inwards.
  • the sensor mounting seat is coaxially sleeved in the circumferential direction of the tapered surface in the boss portion, and four mounting holes are uniformly distributed in the circumferential direction of the sensor mounting seat, and the mounting holes are along Set in the radial direction of the rotor, a displacement sensor is set in each mounting hole.
  • the angle between the tapered surface of the end of the boss and the axis of the rotor is 30°-45°.
  • the mounting hole of the sensor mounting base is filled with potting glue.
  • the axial displacement sensor is omitted, the structure is simple, and the space is saved;
  • the rotor structure is simple, the axial length is shortened, and the natural frequency of the rotor is increased.
  • Figure 1 is a structural diagram of the present invention.
  • FIG. 2 is an arrangement diagram of a radial displacement sensor and an axial displacement sensor around the rotor in the prior art.
  • the present invention is a combined radial and axial sensor for a magnetic suspension bearing, including a rotor 1, a displacement sensor 2 and a sensor mounting base 3, a boss portion 11 is provided on the rotor 1, and the boss portion 11
  • the end is a conical surface structure that shrinks inwards, and the angle between the conical surface and the axis of the rotor 1 is 30°-45°.
  • the sensor mounting base 3 is coaxially sleeved in the circumferential direction of the tapered surface of the boss portion 11, and four mounting holes 31 are uniformly distributed in the circumferential direction of the sensor mounting base 3, and the mounting holes 31 are along the radial direction of the rotor 1 Set, a displacement sensor 2 is provided in each mounting hole 31.
  • the mounting hole 31 of the sensor mounting base 3 is filled with potting glue.
  • the invention removes the original axial displacement sensor, the detection surface of the rotor is made into a conical surface, and when the axial position of the rotor changes, the values of all sensors are too large and too small to judge the axial position of the rotor.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

一种用于磁悬浮轴承的径向与轴向的组合传感器，包括转子（1）、位移传感器（2）和圆形状的传感器安装座（3），转子（1）上设有凸台部（11），凸台部（11）的末端为向内收缩的锥面结构，传感器安装座（3）同轴套设在凸台部（11）中锥面的圆周方向上，在传感器安装座（3）的圆周方向均布有四个安装孔（31），且安装孔（31）沿着转子（1）的径向方向设置，在每个安装孔（31）内设置一个位移传感器（2）。省去了轴向位移传感器，结构简单，节省了空间，缩短了转子轴向长度，提高了转子的固有频率。

Description

一种用于磁悬浮轴承的径向与轴向的组合传感器 技术领域：
本发明涉及一种用于磁悬浮轴承的径向与轴向的组合传感器。
背景技术：
现有的磁悬浮轴承中转子1的径向与轴向的位移变化需要用到两种传感器(如图2)，在转子1的圆周均布4个径向位移传感器，用以检测转子的径向位置。在转子1一端安装一个轴向位移传感器，用以检测转子的轴向位置。采用两个传感器，会使得转子1的轴向安装空间变大，增加转子轴向长度。
发明内容：
本发明是为了解决上述现有技术存在的问题而提供一种用于磁悬浮轴承的径向与轴向的组合传感器。
本发明所采用的技术方案有：一种用于磁悬浮轴承的径向与轴向的组合传感器，包括转子、位移传感器和圆形状的传感器安装座，所述转子上设有凸台部，凸台部的末端为向内收缩的锥面结构，传感器安装座同轴套设在凸台部中锥面的圆周方向上，在传感器安装座的圆周方向均布有四个安装孔，且安装孔沿着转子的径向方向设置，在每个安装孔内设置一个位移传感器。
进一步地，所述凸台部末端锥面与转子轴线之间的夹角为30°-45°。
进一步地，所述传感器安装座的安装孔内填充灌封胶。
本发明具有如下有益效果：
1、省去了轴向位移传感器，使结构简单，节省了空间；
2、转子结构简单了，缩短了轴向长度，提高了转子的固有频率。
附图说明：
图1为本发明结构图。
图2为本现有技术中转子周围径向位移传感器与轴向位移传感器的布置图。
具体实施方式：
下面结合附图对本发明作进一步的说明。
如图1，本发明一种用于磁悬浮轴承的径向与轴向的组合传感器，包括转子1、位移传感器2和传感器安装座3，在转子1上设有凸台部11，凸台部11末端为向内收缩的锥面结构，锥面与转子1轴线之间的夹角为30°-45°。
传感器安装座3同轴套设在凸台部11中锥面的圆周方向上，在传感器安装座3的圆周方向均布有四个安装孔31，且安装孔31沿着转子1的径向方向设置，在每个安装孔31内设置一个位移传感器2。
在传感器安装座3的安装孔31内填充灌封胶。
本发明去掉了原来的轴向位移传感器，转子的检测面做成锥面，转子轴向位置变化时，所有传感器的数值的偏大和偏小来判断转子的轴向位置。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下还可以作出若干改进，这些改进也应视为本发明的保护范围。

Claims (3)

  1. 一种用于磁悬浮轴承的径向与轴向的组合传感器，其特征在于：包括转子(1)、位移传感器(2)和圆形状的传感器安装座(3)，所述转子(1)上设有凸台部(11)，凸台部(11)的末端为向内收缩的锥面结构，传感器安装座(3)同轴套设在凸台部(11)中锥面的圆周方向上，在传感器安装座(3)的圆周方向均布有四个安装孔(31)，且安装孔(31)沿着转子(1)的径向方向设置，在每个安装孔(31)内设置一个位移传感器(2)。
  2. 如权利要求1所述的用于磁悬浮轴承的径向与轴向的组合传感器，其特征在于：所述凸台部(11)末端锥面与转子(1)轴线之间的夹角为30°-45°。
  3. 如权利要求1所述的用于磁悬浮轴承的径向与轴向的组合传感器，其特征在于：所述传感器安装座(3)的安装孔(31)内填充灌封胶。
PCT/CN2019/106742 2018-12-18 2019-09-19 一种用于磁悬浮轴承的径向与轴向的组合传感器 WO2020125103A1 (zh)

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CN109489602A (zh) * 2018-12-18 2019-03-19 南京磁谷科技有限公司 一种用于磁悬浮轴承的径向与轴向的组合传感器

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