WO2020125084A1 - Mounting structure for axial sensor of eletromagnetic bearing - Google Patents
Mounting structure for axial sensor of eletromagnetic bearing Download PDFInfo
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- WO2020125084A1 WO2020125084A1 PCT/CN2019/105501 CN2019105501W WO2020125084A1 WO 2020125084 A1 WO2020125084 A1 WO 2020125084A1 CN 2019105501 W CN2019105501 W CN 2019105501W WO 2020125084 A1 WO2020125084 A1 WO 2020125084A1
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- thrust
- sensor
- axial
- bearing
- thrust magnetic
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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 mounting structure of an electromagnetic bearing axial sensor.
- the axial sensor 4 of the existing electromagnetic bearing is installed at one end of the rotor 1 (see FIG. 2) to detect the axial position of the rotor.
- the installation method of this structure occupies a large space, and when both ends of the rotor are installed with impellers At this time, the installation method of this structure cannot be used.
- the present invention is to provide a mounting structure of an electromagnetic bearing axial sensor in order to solve the above-mentioned problems in the prior art.
- a mounting structure of an electromagnetic bearing axial sensor including a rotor, a thrust magnetic bearing, a thrust disk and an axial sensor, one thrust disk and two thrust magnetic bearings are sleeved on the rotor, The thrust disk is placed between the two thrust magnetic bearings, and two sensor mounting holes are provided on one thrust magnetic bearing, and the positions of the two sensor mounting holes are both within the radius of the thrust disk, in one of the sensor mounting holes
- An axial sensor is installed and filled with potting glue. The axial sensor detects the displacement change between the thrust magnetic bearing and the thrust disk.
- the two sensor mounting holes are arranged along the axial direction of the thrust magnetic bearing.
- one sensor mounting hole is a through hole, and one sensor mounting hole is a blind hole.
- the invention has the following beneficial effects: the invention omits the displacement sensor mounting seat and saves space, directly measures the displacement change between the thrust magnetic bearing and the thrust disk, and the detection position is more accurate, which is suitable for the installation of impellers at both ends of the rotor Structure, wider applicability.
- Figure 1 is a structural diagram of the present invention.
- FIG. 2 is an installation structure diagram of an axial sensor in the prior art of the present invention.
- a mounting structure of an electromagnetic bearing axial sensor of the present invention includes a rotor 1, a thrust magnetic bearing 2, a thrust disk 3, and an axial sensor 4.
- One thrust disk 3 and two thrust magnetic bearings 2 are sleeved on The rotor 1 is provided with a thrust disk 3 between two thrust magnetic bearings 2.
- a rotation gap is formed between the thrust magnetic bearings 2 and the rotor 1.
- Two sensor mounting holes 21 are provided on the outer thrust magnetic bearing 2, and the positions of the two sensor mounting holes 21 are within the radius of the thrust disk 3, and one axial sensor 4 is installed in one of the sensor mounting holes 21 , And the potting glue is filled in the sensor mounting hole 21 to fix the axial sensor 4 in the sensor mounting hole 21.
- the axial sensor 4 detects the amount of displacement change between the thrust magnetic bearing 2 and the thrust disk 3.
- Both sensor mounting holes 21 are provided along the axial direction of the thrust magnetic bearing 2, one sensor mounting hole 21 is a through hole, and one sensor mounting hole 21 is a blind hole.
- the invention installs the axial sensor 4 on the thrust magnetic bearing to detect the axial position of the rotor.
- the axial sensor 4 can be placed in any one of the sensor mounting holes 21, and the influence of the magnetic field of the thrust magnetic bearing on the axial sensor 4 can be compensated by the current in the thrust magnetic bearing.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
isclosed is a mounting structure for an axial sensor of an electromagnetic bearing, comprising a rotor (1), thrust magnetic bearings (2), a thrust plate (3) and axial sensors (4). The thrust plate (3) and two thrust magnetic bearings (2) are sleeved on the rotor (1), the thrust plate (3) being located between the two thrust magnetic bearings (2); two sensor mounting holes (21) are arranged on one thrust magnetic bearing (2), and both of the two sensor mounting holes (21) being located within the radius range of the thrust plate (3); an axial sensor (4) is mounted and pouring sealant is filled in one of the sensor mounting holes (21), the axial sensor (4) detecting the variation of displacement between the thrust magnetic bearing (2) and the thrust plate (3). The structure omits the displacement sensor mounting seat, saves the space, directly measures the variation of displacement between the thrust magnetic bearing (2) and the thrust plate (3), ensures more accurate detection of position, is applicable to the structure of vane wheels mounting on two ends of the rotor (1), and has more extensive applicability.
Description
本发明涉及一种电磁轴承轴向传感器的安装结构。The invention relates to a mounting structure of an electromagnetic bearing axial sensor.
现有的电磁轴承的轴向传感器4安装在转子1的一端(如图2)，检测转子的轴向位置，该种结构的安装方式所占据的空间大，且当转子两端都安装叶轮时，此时该种结构的安装方式就不能使用。The axial sensor 4 of the existing electromagnetic bearing is installed at one end of the rotor 1 (see FIG. 2) to detect the axial position of the rotor. The installation method of this structure occupies a large space, and when both ends of the rotor are installed with impellers At this time, the installation method of this structure cannot be used.
发明内容：Summary of the invention:
本发明是为了解决上述现有技术存在的问题而提供一种电磁轴承轴向传感器的安装结构。The present invention is to provide a mounting structure of an electromagnetic bearing axial sensor in order to solve the above-mentioned problems in the prior art.
本发明所采用的技术方案有：一种电磁轴承轴向传感器的安装结构，包括转子、推力磁轴承、推力盘和轴向传感器，一个推力盘和两个推力磁轴承均套设于转子上，且推力盘置于两推力磁轴承之间，在一个推力磁轴承上设有两个传感器安装孔，且两个传感器安装孔的位置均位于推力盘的半径范围内，在其中一个传感器安装孔内安装一个轴向传感器并填充灌封胶，轴向传感器探测推力磁轴承与推力盘之间的位移变化量。The technical scheme adopted by the invention is as follows: a mounting structure of an electromagnetic bearing axial sensor, including a rotor, a thrust magnetic bearing, a thrust disk and an axial sensor, one thrust disk and two thrust magnetic bearings are sleeved on the rotor, The thrust disk is placed between the two thrust magnetic bearings, and two sensor mounting holes are provided on one thrust magnetic bearing, and the positions of the two sensor mounting holes are both within the radius of the thrust disk, in one of the sensor mounting holes An axial sensor is installed and filled with potting glue. The axial sensor detects the displacement change between the thrust magnetic bearing and the thrust disk.
进一步地，所述两个传感器安装孔均沿着推力磁轴承的轴向方向设置。Further, the two sensor mounting holes are arranged along the axial direction of the thrust magnetic bearing.
进一步地，一个传感器安装孔为通孔，一个传感器安装孔为盲孔。Further, one sensor mounting hole is a through hole, and one sensor mounting hole is a blind hole.
本发明具有如下有益效果：本发明省去了位移传感器安装座，节省了空间，直接测量推力磁轴承与推力盘之间的位移变化量，检测位置更为准确，适用于转子两端安装叶轮的结构，适用性更广。The invention has the following beneficial effects: the invention omits the displacement sensor mounting seat and saves space, directly measures the displacement change between the thrust magnetic bearing and the thrust disk, and the detection position is more accurate, which is suitable for the installation of impellers at both ends of the rotor Structure, wider applicability.
图1为本发明结构图。Figure 1 is a structural diagram of the present invention.
图2为本发明现有技术中轴向传感器的安装结构图。FIG. 2 is an installation structure diagram of an axial sensor in the prior art of the present invention.
下面结合附图对本发明作进一步的说明。The present invention will be further described below with reference to the drawings.
如图1，本发明一种电磁轴承轴向传感器的安装结构，包括转子1、推力磁轴承2、推力盘3和轴向传感器4，一个推力盘3和两个推力磁轴承2均套设于转子1上，且推力盘3置于两推力磁轴承2之间，推力磁轴承2与转子1之间形成有转动间隙。As shown in FIG. 1, a mounting structure of an electromagnetic bearing axial sensor of the present invention includes a rotor 1, a thrust magnetic bearing 2, a thrust disk 3, and an axial sensor 4. One thrust disk 3 and two thrust magnetic bearings 2 are sleeved on The rotor 1 is provided with a thrust disk 3 between two thrust magnetic bearings 2. A rotation gap is formed between the thrust magnetic bearings 2 and the rotor 1.
在外侧的推力磁轴承2上设有两个传感器安装孔21，且两个传感器安装孔21的位置均位于推力盘3的半径范围内，在其中一个传感器安装孔21内安装一个轴向传感器4，并在该传感器安装孔21内填充灌封胶，将轴向传感器4固定于该传感器安装孔21内。轴向传感器4探测推力磁轴承2与推力盘3之间的位移变化量。Two sensor mounting holes 21 are provided on the outer thrust magnetic bearing 2, and the positions of the two sensor mounting holes 21 are within the radius of the thrust disk 3, and one axial sensor 4 is installed in one of the sensor mounting holes 21 , And the potting glue is filled in the sensor mounting hole 21 to fix the axial sensor 4 in the sensor mounting hole 21. The axial sensor 4 detects the amount of displacement change between the thrust magnetic bearing 2 and the thrust disk 3.
两个传感器安装孔21均沿着推力磁轴承2的轴向方向设置，一个传感器安装孔21为通孔，一个传感器安装孔21为盲孔。Both sensor mounting holes 21 are provided along the axial direction of the thrust magnetic bearing 2, one sensor mounting hole 21 is a through hole, and one sensor mounting hole 21 is a blind hole.
本发明将轴向传感器4安装在推力磁轴承上，检测转子轴向位置。轴向传感器4可以放在任一一个传感器安装孔21内，轴向传感器4受到的推力磁轴承磁场的影响可以用推力磁轴承中的电流做补偿。The invention installs the axial sensor 4 on the thrust magnetic bearing to detect the axial position of the rotor. The axial sensor 4 can be placed in any one of the sensor mounting holes 21, and the influence of the magnetic field of the thrust magnetic bearing on the axial sensor 4 can be compensated by the current in the thrust magnetic bearing.
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。The above is only a preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, several improvements can be made without departing from the principles of the present invention, and these improvements should also be regarded as protected range.
Claims (3)
- 一种电磁轴承轴向传感器的安装结构，包括转子(1)、推力磁轴承(2)、推力盘(3)和轴向传感器(4)，一个推力盘(3)和两个推力磁轴承(2)均套设于转子(1)上，且推力盘(3)置于两推力磁轴承(2)之间，其特征在于：在一个推力磁轴承(2)上设有两个传感器安装孔(21)，且两个传感器安装孔(21)的位置均位于推力盘(3)的半径范围内，在其中一个传感器安装孔(21)内安装一个轴向传感器(4)并填充灌封胶，轴向传感器(4)探测推力磁轴承(2)与推力盘(3)之间的位移变化量。An installation structure of an electromagnetic bearing axial sensor includes a rotor (1), a thrust magnetic bearing (2), a thrust disk (3) and an axial sensor (4), a thrust disk (3) and two thrust magnetic bearings ( 2) Both are sleeved on the rotor (1), and the thrust disk (3) is placed between the two thrust magnetic bearings (2), which is characterized in that two sensor mounting holes are provided on one thrust magnetic bearing (2) (21), and the positions of the two sensor mounting holes (21) are located within the radius of the thrust disc (3), and an axial sensor (4) is installed in one of the sensor mounting holes (21) and filled with potting glue , The axial sensor (4) detects the amount of displacement change between the thrust magnetic bearing (2) and the thrust disk (3).
- 如权利要求1所述的电磁轴承轴向传感器的安装结构，其特征在于：所述两个传感器安装孔(21)均沿着推力磁轴承(2)的轴向方向设置。The mounting structure of an electromagnetic bearing axial sensor according to claim 1, wherein the two sensor mounting holes (21) are arranged along the axial direction of the thrust magnetic bearing (2).
- 如权利要求1所述的电磁轴承轴向传感器的安装结构，其特征在于：一个传感器安装孔(21)为通孔，一个传感器安装孔(21)为盲孔。The mounting structure of an electromagnetic bearing axial sensor according to claim 1, wherein one sensor mounting hole (21) is a through hole and one sensor mounting hole (21) is a blind hole.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811548451.3A CN109470192A (en) | 2018-12-18 | 2018-12-18 | A kind of mounting structure of electromagnetic bearing axial sensor |
| CN201811548451.3 | 2018-12-18 |
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| WO2020125084A1 true WO2020125084A1 (en) | 2020-06-25 |
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| PCT/CN2019/105501 WO2020125084A1 (en) | 2018-12-18 | 2019-09-12 | Mounting structure for axial sensor of eletromagnetic bearing |
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| WO (1) | WO2020125084A1 (en) |
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| CN109470192A (en) * | 2018-12-18 | 2019-03-15 | 南京磁谷科技有限公司 | A kind of mounting structure of electromagnetic bearing axial sensor |
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| US10280928B2 (en) * | 2015-10-02 | 2019-05-07 | Daikin Applied Americas Inc. | Centrifugal compressor with surge prediction |
| CN205593500U (en) * | 2015-12-14 | 2016-09-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Axial displacement detection device and magnetic suspension bearing |
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2018
- 2018-12-18 CN CN201811548451.3A patent/CN109470192A/en active Pending
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- 2019-09-12 WO PCT/CN2019/105501 patent/WO2020125084A1/en active Application Filing
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| CN1687606A (en) * | 2005-05-09 | 2005-10-26 | 北京航空航天大学 | Passive type axial magnetic suspension bearing of possessing damping action |
| WO2010028630A1 (en) * | 2008-09-09 | 2010-03-18 | Schaeffler Kg | Sensor arrangement for determining a characteristic variable for the wear of a roller bearing and wind power plant |
| CN106197245A (en) * | 2016-09-26 | 2016-12-07 | 南京磁谷科技有限公司 | A kind of magnetic bearing sensor mounting structure |
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| CN109470192A (en) | 2019-03-15 |
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