CN213450894U - Magnetic suspension centrifugal air compressor system - Google Patents
Magnetic suspension centrifugal air compressor system Download PDFInfo
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- CN213450894U CN213450894U CN202020686221.XU CN202020686221U CN213450894U CN 213450894 U CN213450894 U CN 213450894U CN 202020686221 U CN202020686221 U CN 202020686221U CN 213450894 U CN213450894 U CN 213450894U
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Abstract
The application relates to a magnetic suspension centrifugal air compressor system, wherein the system comprises a compressor main body, a magnetic suspension bearing assembly and a motor, and further comprises a sensor assembly, a collector, a motor driver, a power supply and a controller; the collector is connected with the sensor assembly; the controller is respectively connected with the collector and the motor driver; the controller collects data according to the received position collected by the collector, controls the output power of the power supply and controls the working frequency of the motor driver. The magnetic suspension centrifugal air compressor can monitor the position deviation of the motor spindle, and can predict possible faults in advance according to vibration changes, so that pre-accident processing is realized, and the monitoring efficiency of the magnetic suspension centrifugal air compressor is improved.
Description
Technical Field
The application relates to the technical field of compressors, in particular to a magnetic suspension centrifugal air compressor system.
Background
The development of high speed, high efficiency centrifugal air compressors is a problem in solving the problems associated with screw compressors that are currently in the market for most medium sized compressors (e.g., 100kW class compressors). The screw compressor with the largest ratio in the medium-sized compressor market needs to be provided with a speed-up gear box and a lubricating system for realizing high-speed rotation. This mode not only polluted environment and equipment monitoring efficiency is on the low side, and the novel equipment that efficiency is higher and do not have oily pollution is urgently needed at present.
In the implementation process, the inventor finds that at least the following problems exist in the conventional technology: the conventional middle-sized compressor has a low monitoring efficiency.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a magnetic levitation centrifugal air compressor system to solve the problem of low monitoring efficiency of the conventional medium-sized compressor.
In order to achieve the above object, an embodiment of the present invention provides a magnetic suspension centrifugal air compressor system, including: the compressor comprises a compressor main body, and a magnetic suspension bearing assembly and a motor which are respectively arranged in the compressor main body; the motor comprises a motor main shaft and a motor stator sleeved on the motor main shaft; the magnetic suspension bearing assemblies are sleeved on two sides of the motor spindle; further comprising:
the sensor assembly is sleeved on two sides of the motor spindle; the sensor assembly is used for measuring the position of the motor spindle;
the collector is connected with the sensor assembly; the collector is used for collecting position data of the motor spindle;
the motor driver is used for driving the motor spindle to rotate;
the power supply is used for supplying power to the magnetic suspension bearing assembly;
the controller is respectively connected with the collector and the motor driver; the controller is used for controlling the output power of the power supply and controlling the working frequency of the motor driver according to the received position data.
In one embodiment, the sensor assembly comprises a first position sensor disposed at a first end of the motor spindle, and a second position sensor disposed at a second end of the motor spindle;
the first position sensor and the second position sensor are respectively connected with the collector.
In one embodiment, the sensor assembly further comprises a temperature sensor disposed proximate the motor shaft;
the temperature sensor is connected with the collector.
In one embodiment, the collector is an analog-to-digital converter collector.
In one embodiment, the controller is a PLC controller or a DSP controller.
In one embodiment, the power supply is a dc power module.
In one embodiment, the magnetic suspension bearing assembly comprises a first radial magnetic suspension bearing arranged at a first end of the motor spindle and a second radial magnetic suspension bearing arranged at a second end of the motor spindle;
the first radial magnetic suspension bearing is connected with the direct-current power supply module; the second radial magnetic suspension bearing is connected with the direct-current power supply module.
In one embodiment, the magnetic suspension bearing assembly further comprises an axial magnetic suspension bearing arranged on the motor spindle;
the axial magnetic suspension bearing is connected with the direct current power supply module.
One of the above technical solutions has the following advantages and beneficial effects:
in each embodiment of the magnetic suspension centrifugal air compressor system, the sensor-based components are sleeved on two sides of the motor spindle; the collector is connected with the sensor assembly; the controller is respectively connected with the collector and the motor driver; the sensor assembly measures the position data of the main shaft of the motor; the collector collects the position of the motor spindle measured by the sensor assembly to obtain position data; the controller controls the output power of the power supply and the working frequency of the motor driver according to the received position data acquired by the collector, so that the power supply adjusts the size of the output power for supplying power to the magnetic suspension bearing assembly; and the motor driver is used for adjusting the rotating speed of the motor spindle, so that the magnetic suspension centrifugal air compressor can monitor and adjust the position deviation of the motor spindle in real time in the working process. This application is through carrying out real time monitoring to magnetic suspension centrifugal air compressor to according to the skew position of the motor spindle of monitoring, adjust the power size of input magnetic suspension bearing subassembly, and the rotational speed of adjustment motor spindle, and then the accessible monitoring motor spindle's vibration (position skew), and foresee the trouble that probably takes place in advance according to the vibration change, realize the pretreatment of accident, improved the monitoring efficiency to magnetic suspension centrifugal air compressor.
Drawings
FIG. 1 is a schematic diagram of a first configuration of a magnetically levitated centrifugal air compressor system in one embodiment;
FIG. 2 is a second schematic diagram of a magnetically levitated centrifugal air compressor system in one embodiment.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The following detailed description of embodiments of the present application will be made with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present application, are given by way of illustration and explanation only, and are not intended to limit the present application.
In order to solve the problem of low monitoring efficiency of the conventional middle-sized compressor. In one embodiment, as shown in FIG. 1, there is provided a magnetic levitation centrifugal air compressor system comprising: the compressor comprises a compressor main body 110, and a magnetic suspension bearing assembly 120 and a motor 130 which are respectively arranged on the compressor main body 110; the motor 130 includes a motor spindle 132 and a motor stator 134 sleeved on the motor spindle 132. The magnetic suspension bearing assembly 120 is sleeved on two sides of the motor spindle 132; further comprising:
the sensor assembly 140, the sensor assembly 140 is sleeved on two sides of the motor spindle 132; sensor assembly 140 is used to measure motor spindle position data;
the collector 150 is connected with the sensor assembly 140; the collector 150 is used for collecting position data of the motor spindle;
the motor driver 160, the motor driver 160 is used for driving the motor spindle 132 to rotate;
a power supply 170, the power supply 170 being used to supply power to the magnetic bearing assembly 120;
the controller 180, the controller 180 connects collector 150, motor driver 160 separately; the controller 180 is used to control the output power of the power supply 170 and the operating frequency of the motor driver 160 according to the received position data.
Wherein, the compressor body 110 may include a compressor housing, and the inside of the compressor body 110 may be used to embed the magnetic bearing assembly 120 and the motor 130, etc. The compressor body 110 may further include a fluid portion, and the fluid portion of the compressor body 110 may serve as a passage through which a medium flows, withstand the pressure of the medium, and forcibly close. The magnetic bearing assembly 120 refers to a bearing assembly capable of generating a magnetic force by the principle of electromagnetic induction. The magnetic bearing assembly 120 may be used to maintain the motor spindle in suspension.
It should be noted that, when the magnetic suspension bearing assembly 120 maintains the motor spindle in suspension, the magnetic suspension bearing assembly 120 is not in contact with the spindle of the motor 130, and no lubricant needs to be added.
The motor 130 may be a permanent magnet motor. In one example, the motor 130 may be a permanent magnet direct drive high speed motor. The motor stator 134 may be a stationary portion of the motor. The motor stator 134 may be comprised of three parts, a stator core, stator windings, and a housing. The primary function of the motor stator 134 is to generate a rotating magnetic field that causes the motor spindle to rotate. The motor spindle 132 refers to a rotating member in the motor.
The sensor assembly 140 may include at least two sensors. The sensor assembly 140 may be used to measure position data of the motor spindle 132. The motor driver 160 may be used to drive the motor 130 to operate, thereby causing the motor spindle 132 to rotate. The power supply 170 may be used to supply power to the magnetic bearing assembly 120, and the magnetic bearing assembly 120 may adjust the output magnetic field according to the current of the power supply 170, so as to maintain the motor spindle 132 in levitation. The controller 180 refers to a processing device capable of performing functions such as data processing and data transmission.
Specifically, the sensor assembly 140 can measure the position of the motor spindle in real time when the magnetically levitated centrifugal air compressor is powered on and started. The collector 150 may collect the motor spindle position data measured by the sensor assembly 140 to obtain position data corresponding to the motor spindle 132, and transmit the position data to the controller 180. The controller 180 can control the power supply 170 and the motor driver 160 according to the received position data collected by the collector 150, and the power supply 170 can adjust the output power supply for supplying power to the magnetic suspension bearing assembly 120; the motor driver 160 can adjust the rotation speed of the motor spindle 132, so that the motor spindle 132 maintains levitation, and the motor spindle 132 is prevented from contacting the magnetic levitation bearing assembly 120, thereby avoiding malfunction.
In the embodiment of the magnetic suspension centrifugal air compressor system, the sensor-based components are sleeved on two sides of the motor spindle; the collector is connected with the sensor assembly; the controller is respectively connected with the collector and the motor driver; the sensor assembly measures the position data of the main shaft of the motor; the collector collects the position of the motor spindle measured by the sensor assembly to obtain position data; the controller controls the output power of the power supply and the working frequency of the motor driver according to the received position data acquired by the collector, so that the power supply adjusts the size of the output power for supplying power to the magnetic suspension bearing assembly; and the motor driver is used for adjusting the rotating speed of the motor spindle, so that the magnetic suspension centrifugal air compressor can monitor and adjust the position deviation of the motor spindle in real time in the working process. By monitoring the magnetic suspension centrifugal air compressor in real time, adjusting the power input into the magnetic suspension bearing assembly and the rotating speed of the motor spindle according to the monitored offset position of the motor spindle, the pre-accident treatment is realized by monitoring the vibration (position offset) of the motor spindle and predicting the possible faults in advance according to the vibration change, and the monitoring efficiency of the magnetic suspension centrifugal air compressor is improved.
In one embodiment, as shown in FIG. 2, the sensor assembly 140 includes a first position sensor 142 disposed at a first end of the motor spindle 132, and a second position sensor 144 disposed at a second end of the motor spindle 132; the first position sensor 142 and the second position sensor 144 are each connected to a collector 150.
The first position sensor 142 is a sensor that senses the position of the object and converts the sensed position into a usable output signal. The first position sensor 142 may be a proximity sensor. Second position sensor 144 refers to a sensor that senses the position of the object being measured and converts the sensed position to a usable output signal. The second position sensor 144 may be a proximity sensor.
Specifically, the first position sensor 142 is disposed at a first end of the motor spindle 132, and the second position sensor 144 is disposed at a second end of the motor spindle 132; the first position sensor 142 and the second position sensor 144 are each connected to a collector 150. The first position sensor 142 may measure position data of a first end of the motor shaft 132, the second position sensor 144 may measure position data of a second end of the motor shaft 132, and the collector 150 may collect position data of the first end of the motor shaft 132 measured by the first position sensor 142 and position data of the second end of the motor shaft 132 measured by the second position sensor 144, respectively, and transmit the collected position data of the first end of the motor shaft 132 and the collected position data of the second end of the motor shaft 132 to the controller 180. The controller 180 controls the power supply 170 to adjust the power supply of the magnetic suspension bearing assembly 120 and controls the motor driver 160 to adjust the rotation speed of the motor spindle 132 according to the received first end position data of the motor spindle 132 and the received second end position data of the motor spindle 132, so that the magnetic suspension centrifugal air compressor can monitor and adjust the position deviation of the motor spindle in real time in the working process, and the monitoring efficiency of the magnetic suspension centrifugal air compressor is improved.
In a particular embodiment, the sensor assembly further comprises a temperature sensor disposed proximate the motor shaft; the temperature sensor is connected with the collector.
Wherein, the temperature sensor refers to a sensor which can sense the temperature and convert into a usable output signal. The temperature sensor may be a contact temperature sensor or a non-contact temperature sensor.
Specifically, based on temperature sensor connects the collector, temperature sensor can gather the temperature data of motor spindle to the temperature data who will gather transmit the controller. The controller can control the motor driver to adjust the rotating speed of the motor spindle according to the received temperature data.
In one example, the controller controls the motor driver to power down when the temperature data exceeds a temperature threshold, so that the motor spindle stops rotating, and the motor spindle is prevented from being over-heated to damage the magnetic suspension centrifugal air compressor.
In a specific embodiment, the controller is a PLC controller or a DSP controller.
In a specific embodiment, the power supply is a dc power module.
In one embodiment, the magnetic bearing assembly comprises a first radial magnetic bearing provided at a first end of the motor spindle, and a second radial magnetic bearing provided at a second end of the motor spindle. The first radial magnetic suspension bearing is connected with the direct-current power supply module; the second radial magnetic suspension bearing is connected with the direct-current power supply module.
The first radial magnetic suspension bearing is an annular magnetic suspension bearing; the first radial magnetic bearing refers to a magnetic bearing capable of generating a radial magnetic force. The second radial magnetic suspension bearing is an annular magnetic suspension bearing; the second radial magnetic bearing refers to a magnetic bearing capable of generating a radial magnetic force. The first radial magnetic suspension bearing and the second radial magnetic suspension bearing are fixedly embedded in the compressor main body respectively.
Specifically, the sensor assembly may measure position data of the first radial magnetic bearing and a first end of the motor spindle, and position data of the second radial magnetic bearing and a second end of the motor spindle, respectively. And then the collector can gather the position data of motor spindle first end and the position data of motor spindle second end respectively to position data transmission for the controller that will gather.
In a specific embodiment, the magnetic suspension bearing assembly further comprises an axial magnetic suspension bearing arranged on the motor spindle; the axial magnetic suspension bearing is connected with the direct current power supply module.
The axial magnetic suspension bearing refers to a magnetic suspension bearing capable of generating axial magnetic force.
The bearing-based magnetic suspension bearing is arranged on the motor spindle, so that the motor spindle can be maintained to be axially fixed.
In the above embodiment, the sensor-based component is sleeved on both sides of the motor spindle; the collector is connected with the sensor assembly; the controller is respectively connected with the collector and the motor driver; the sensor assembly measures the position data of the main shaft of the motor; the collector collects the position of the motor spindle measured by the sensor assembly to obtain position data; the controller controls the output power of the power supply and the working frequency of the motor driver according to the received position data acquired by the collector, so that the power supply adjusts the size of the output power for supplying power to the magnetic suspension bearing assembly; and the motor driver is used for adjusting the rotating speed of the motor spindle, so that the magnetic suspension centrifugal air compressor can monitor and adjust the position deviation of the motor spindle in real time in the working process. The method realizes the pre-accident treatment by monitoring the vibration (position deviation) of the motor spindle and predicting the possible faults in advance according to the vibration change, thereby improving the monitoring efficiency of the magnetic suspension centrifugal air compressor.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A magnetically levitated centrifugal air compressor system, comprising: the compressor comprises a compressor main body, and a magnetic suspension bearing assembly and a motor which are respectively arranged in the compressor main body; the motor comprises a motor spindle and a motor stator sleeved on the motor spindle; the magnetic suspension bearing assembly is sleeved on two sides of the motor spindle; further comprising:
the sensor assembly is sleeved on two sides of the motor spindle; the sensor assembly is used for measuring the position of the motor spindle;
the collector is connected with the sensor assembly; the collector is used for collecting position data of the motor spindle;
the motor driver is used for driving the motor spindle to rotate;
a power supply for supplying power to the magnetic bearing assembly;
the controller is respectively connected with the collector and the motor driver; the controller is used for controlling the output power of the power supply and the working frequency of the motor driver according to the received position data.
2. The magnetically suspended centrifugal air compressor system of claim 1, wherein the sensor assembly comprises a first position sensor disposed at a first end of the motor spindle, and a second position sensor disposed at a second end of the motor spindle;
the first position sensor and the second position sensor are respectively connected with a collector.
3. The magnetically suspended centrifugal air compressor system of claim 2, wherein the sensor assembly further comprises a temperature sensor disposed proximate the motor spindle;
the temperature sensor is connected with the collector.
4. The magnetic levitation centrifugal air compressor system of claim 1, wherein the collector is an analog-to-digital conversion collector.
5. The magnetic levitation centrifugal air compressor system of claim 1, wherein the controller is a PLC controller or a DSP controller.
6. The magnetically levitated centrifugal air compressor system of claim 1, wherein the power supply is a direct current power supply module.
7. The magnetically levitated centrifugal air compressor system of claim 6, wherein the magnetically levitated bearing assembly includes a first radial magnetic levitation bearing disposed at a first end of the motor spindle and a second radial magnetic levitation bearing disposed at a second end of the motor spindle;
the first radial magnetic suspension bearing is connected with the direct-current power supply module; and the second radial magnetic suspension bearing is connected with the direct-current power supply module.
8. The magnetically levitated centrifugal air compressor system of claim 7, wherein the magnetically levitated bearing assembly further includes an axial magnetically levitated bearing provided to the motor spindle;
the axial magnetic suspension bearing is connected with the direct current power supply module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020686221.XU CN213450894U (en) | 2020-04-29 | 2020-04-29 | Magnetic suspension centrifugal air compressor system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020686221.XU CN213450894U (en) | 2020-04-29 | 2020-04-29 | Magnetic suspension centrifugal air compressor system |
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| CN213450894U true CN213450894U (en) | 2021-06-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111536054A (en) * | 2020-04-29 | 2020-08-14 | 佛山格尼斯磁悬浮技术有限公司 | Magnetic suspension centrifugal air compressor system and monitoring method thereof |
| CN114135580A (en) * | 2021-11-04 | 2022-03-04 | 珠海格力电器股份有限公司 | Position evaluation method and device for magnetic bearing rotor |
-
2020
- 2020-04-29 CN CN202020686221.XU patent/CN213450894U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111536054A (en) * | 2020-04-29 | 2020-08-14 | 佛山格尼斯磁悬浮技术有限公司 | Magnetic suspension centrifugal air compressor system and monitoring method thereof |
| CN114135580A (en) * | 2021-11-04 | 2022-03-04 | 珠海格力电器股份有限公司 | Position evaluation method and device for magnetic bearing rotor |
| CN114135580B (en) * | 2021-11-04 | 2022-07-26 | 珠海格力电器股份有限公司 | Position evaluation method and device for magnetic bearing rotor |
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