CN112504440A - Rotating machinery vibration on-line monitoring test device - Google Patents
Rotating machinery vibration on-line monitoring test device Download PDFInfo
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- G—PHYSICS
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- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
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Abstract
本发明公开了一种旋转机械振动在线监测试验装置，包括检测工装机构，检测工装机构的支撑端安装有基板，基板的上表面分别安装有电机和下平台，电机的驱动端安装有轴杆保护管，外置轴承连接件二与外置轴承连接件一的上表面分别磁吸固定有探头一。该旋转机械振动在线监测试验装置，叶片安装轮部位的H向震源为两组、涡轮泵体部位的V向震源为四组，四组V向震源分别对称分布在轴管的驱动部位与传输部位、减速器部位的Z向震源为两组，以及外置轴承连接件一部位的相位震源为两组，每组之间在接收到振动后，将振动采集，用于导线配合传感器进行接收，而传感器随振动台被测点一起运动，产生与运动轨迹对应的电荷。
The invention discloses an on-line monitoring and testing device for rotating machinery vibration, comprising a detection tooling mechanism, a support end of the detection tooling mechanism is installed with a base plate, a motor and a lower platform are respectively installed on the upper surface of the base plate, and a shaft protection is installed at the driving end of the motor A probe 1 is magnetically fixed on the upper surfaces of the second outer bearing connecting piece and the outer bearing connecting piece 1, respectively. The rotating machinery vibration online monitoring test device has two groups of H-direction sources at the blade installation wheel and four groups of V-direction sources at the turbine pump body. The four groups of V-direction sources are symmetrically distributed in the drive part and the transmission part of the shaft tube. , The Z-direction source of the reducer is divided into two groups, and the phase source of a part of the external bearing connection is divided into two groups. After receiving vibration between each group, the vibration is collected and used for the wire to cooperate with the sensor to receive, while The sensor moves with the measured point of the vibrating table, and generates electric charges corresponding to the motion trajectory.
Description
Technical Field
The invention relates to the field of rotary machine vibration, in particular to an online monitoring test device for rotary machine vibration.
Background
The rotary machine is a machine whose main function is completed by rotary motion, especially a machine with high rotation speed, such as motor, centrifugal compressor, turbine blade mounting wheel set, centrifugal blower, centrifugal water pump, vacuum pump, etc., all belong to the field of rotary machines, so-called equipment on-line monitoring system is characterized by that it utilizes the sensors mounted on the equipment to make real-time acquisition, analysis and treatment of signals including vibration, oil pressure, bearing bush temperature, key phase and shaft displacement, etc., and can quickly and accurately make judgment of various abnormal conditions or fault precursors, and can analyze type, position, extent, development trend and fault reason of fault so as to promptly take correspondent measures.
However, when the conventional online vibration monitoring test device for the rotary machine at present monitors vibration online, only the vibration displacement and the rotating speed of the rotary machine shaft can be monitored, the operation condition of the whole rotary machine cannot be accurately monitored online, and feedback cannot be timely performed, so that a vibration response curve and a related map of the rotary machine during operation are displayed, the structure is not optimized enough, and the design is not reasonable enough.
Disclosure of Invention
The invention aims to provide an online monitoring and testing device for rotary mechanical vibration, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides a rotary mechanical vibration online monitoring test device which comprises a detection tool mechanism, wherein a base plate is arranged at a supporting end of the detection tool mechanism, a motor and a lower platform are respectively arranged on the upper surface of the base plate, a shaft rod protection tube is arranged at the driving end of the motor, an external bearing connecting piece II and an external bearing connecting piece I are respectively arranged at the front part and the rear part of the outer wall of the shaft rod protection tube, a probe I is respectively fixed on the upper surfaces of the external bearing connecting piece II and the external bearing connecting piece I in a magnetic attraction manner, an H-shaped vibration source is arranged between the two groups of probe I, a ring groove is arranged at the middle part of the outer wall of the shaft rod protection tube, a main linkage ring is arranged on the outer wall of a driving rod in the ring groove, an installation seat is arranged on the outer wall of the shaft rod protection tube, the other end of belt is installed from the link ring, the reduction gear is installed to the one end of axostylus axostyle protection tube, the lower surface mounting of reduction gear has the upper mounting plate, support piece has all been welded by outer position to the lower surface of upper mounting plate, support piece's bottom welding has lower platform, the axostylus axostyle installation end of reduction gear is provided with spacing pipe three of bearing and the spacing pipe one of bearing respectively, the equal magnetism of the upper surface of spacing pipe three of bearing and the spacing pipe one of bearing has inhaled probe four, spacing pipe one of bearing and the four symmetric distribution of probe are at the drive end and the output of reduction gear, and be provided with V between the spacing pipe one of symmetry bearing and the symmetric probe four to the focus, the turbine pump body is installed to the one end of the spacing.
In a preferred embodiment, the reduction gear embeds there is a tooth mouth section of thick bamboo, the feed liquor pipe is installed to the power take off end of a tooth mouth section of thick bamboo, pivot part two is installed to the drive end of feed liquor pipe, install the turbine subassembly on the outer wall of pivot part two, the feed liquor pipe is installed to the play liquid end of turbine subassembly, the welding has the welding arc piece on the left wall of turbine subassembly, pivot part four is installed to the one end of pivot part two, pivot part three is installed to the one end of pivot part four, pivot part one is installed to the one end of pivot part four, the bottom welding of welding arc piece has the welding arc connection piece, the bottom welding of welding arc connection piece has the shock attenuation platform, the welding of one side of shock attenuation platform has the.
In a preferred embodiment, a protruding shaft tube is installed on the left wall of the blade installation wheel, a second probe is installed on the upper surface of the protruding shaft tube, a third probe is installed on the upper surface of the second bearing limiting tube, a phase source and a Z-direction source are arranged between the second probe and the third probe, the phase sources are symmetrically distributed at the bearing tube positions on the left side and the right side of the turbine pump body, and the Z-direction sources are symmetrically distributed at the bearing tube positions on the left side and the right side of the blade installation wheel.
In a preferred embodiment, a tool cabinet is installed on the lower surface of a detection tool mechanism, a patch plate is installed on the upper portion of the right wall of the detection tool mechanism, a slotted support box is welded on one side of the patch plate, a first signal receiver is installed on the right portion of the upper table surface of the tool cabinet, a nut support piece is arranged on the left side of the first signal receiver and is also located on the upper table surface of the tool cabinet, a second signal receiver is installed on the receiving end of the nut support piece, a limiting tool is fixed on the rear portion of the upper table surface of the tool cabinet through a nut, a power accumulator is installed on the top end of the limiting tool, and a third receiver is installed on the front vertical surface.
In a preferred embodiment, the left side and the right side of the upper surface of the mounting seat are provided with screws, and the bottoms of the screws penetrate through the upper surface of the mounting seat and are fixed with the top end of the supporting piece in a threaded mode.
In a preferred embodiment, one end of each of the second probe, the third probe, the fourth probe and the first probe is provided with a lead, and one end of each lead is provided with a sensor.
In a preferred embodiment, a V-direction seismic source is arranged on the right side of the H-direction seismic source, a Z-direction seismic source is arranged on the right side of the V-direction seismic source, a phase seismic source is arranged on the right side of the Z-direction seismic source, and the H-direction seismic source, the V-direction seismic source, the Z-direction seismic source and the phase seismic source are respectively used for defining and transmitting the trend of the vibration signal.
In a preferred embodiment, the sensor is respectively connected with a signal processor, a data acquisition analyzer and a motor voltage regulator in a butt joint mode, a case is installed on outer frames of the signal processor, the data acquisition analyzer and the motor voltage regulator, an access panel is installed on a front vertical face of the case, and a side guard frame strip is installed in the middle of the right side of an inner cavity of the case.
In a preferred embodiment, a monitoring body is installed at the monitoring end of the second probe, a seismic source amplifier is arranged at the bottom end of the monitoring body, a magnetic block is fixed at the bottom end of the seismic source amplifier, and the second probe, the third probe and the fourth probe are identical in structure.
In a preferred embodiment, one end of the signal processor is connected with the PLC through a wire, and the built-in unit of the PLC is respectively connected with the storage module, the switch output module, the data acquisition module and the real-time processing display module, and the external expansion unit of the PLC is connected with the graphic instrument.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, a received signal of the sensor is contacted with the signal processor, the data acquisition analyzer and the motor voltage regulator part and is used for carrying out voltage regulation on the motor, data acquisition and signal processing, providing an excitation signal for the sensor and carrying out pretreatment on a monitored signal, after the data is acquired, the signal is classified and transmitted to the PLC, the PLC transmits the data to the data acquisition module in real time, the data is transmitted back to the PLC through the format and the vibration curve of the map, and the PLC is transmitted to the real-time processing module part at the same time, so that the digital signal is subjected to secondary trace extraction of electric quantity corresponding to secondary trace and waveform display and load, is analyzed along with a signal line and is displayed in the same real time through the display screen, the structure is more optimized, and the design is more reasonable.
2. In the invention, two groups of H-direction seismic sources are positioned at the blade mounting wheel part, four groups of V-direction seismic sources are positioned at the turbine pump body part, the four groups of V-direction seismic sources are respectively and symmetrically distributed at a driving part and a transmission part of an axle tube, two groups of Z-direction seismic sources are positioned at a speed reducer part, and two groups of phase seismic sources are positioned at one part of an external bearing connecting piece, after receiving vibration, the vibration between each group is collected and used for being received by a lead matched with a sensor, and the sensor moves along with a measured point of a vibration table to generate charges corresponding to a motion track.
3. In the invention, the transmission and storage module is used for collecting the past data and determining an average value, and when the data collected by the PLC exceeds the average value of the storage module, an alarm is given and displayed through the display screen.
Drawings
FIG. 1 is a schematic structural diagram of an online vibration monitoring and testing device for a rotary machine according to the present invention;
FIG. 2 is a structural diagram of a signal generating mechanism and a detecting mechanism in the rotary machine vibration online monitoring test device of the present invention;
FIG. 3 is a diagram of a detecting tool mechanism in the rotary mechanical vibration online monitoring test device according to the present invention;
FIG. 4 is a view of the internal structure of a turbine pump body in the online vibration monitoring and testing device of the rotary machine of the present invention;
FIG. 5 is a seismic source wave walking diagram in the rotary mechanical vibration online monitoring test device of the present invention;
FIG. 6 is a top view of the monitoring assembly of the present invention for on-line monitoring and testing vibration of rotating machinery;
FIG. 7 is a structural diagram of a chassis of the rotary machine vibration on-line monitoring test device of the present invention;
FIG. 8 is a structural diagram of a probe of the present invention for on-line monitoring and testing vibration of rotating machinery;
fig. 9 is a signal transmission block diagram in the rotary machine vibration online monitoring test device of the present invention.
Description of reference numerals: the device comprises a base plate 1, a motor 2, a main linkage ring 3, a first external bearing connecting piece 4, a first probe 5, a belt 6, a second external linkage ring 7, a second external bearing connecting piece 8, a shaft rod protection tube 9, a mounting seat 10, an upper platform 11, a speed reducer 12, a supporting piece 13, a lower platform 14, a first bearing limiting tube 15, a turbine pump body 16, a second bearing limiting tube 17, a blade mounting wheel 18, a second probe 19, a third probe 20, a third bearing limiting tube 21, a fourth probe 22, an overhaul board 23, a case 24, an H-direction seismic source 25, a V-direction seismic source 26, a Z-direction seismic source 27, a phase seismic source 28, a screw 29, a monitoring body 30, a seismic source amplifier 31, a magnetic block 32, a signal processor 33, a data acquisition analyzer 34, a side guard frame strip 35, a motor pressure regulator 36, a slotted support box 37, a first signal receiver 38, a nut supporting piece 39, a second signal receiver 40, The device comprises a third receiver 43, a patch plate 44, a detection tooling mechanism 45, a tooling cabinet 46, a tooth mouth cylinder 47, a liquid inlet pipe 48, a first rotating shaft part 49, a turbine assembly 50, a second rotating shaft part 51, a welding arc sheet 52, a third rotating shaft part 53, a fourth rotating shaft part 54, an impeller 55, a damping table 56, a welding arc connecting sheet 57 and a bearing plane 58.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
Example 1
As shown in fig. 1 to 8, the rotary machine vibration online monitoring and testing apparatus according to the preferred embodiment of the present invention includes a substrate 1, and a motor 2 and a lower stage 14 are respectively mounted on an upper surface of the substrate 1. A shaft rod protection tube 9 is installed at the driving end of the motor 2, an external bearing connecting piece II 8 and an external bearing connecting piece I4 are installed on the outer wall of the shaft rod protection tube 9 close to the front portion and the outer wall of the shaft rod protection tube close to the rear portion respectively, a probe I5 is fixed on the upper surface of the external bearing connecting piece II 8 and the upper surface of the external bearing connecting piece I4 in a magnetic attraction mode respectively, and an H-direction seismic source 25 is arranged between the two groups of probe. The annular groove is opened at the outer wall middle part of axostylus axostyle protection tube 9, and installs main linkage circle 3 on the actuating lever outer wall in the annular groove, installs mount pad 10 on the outer wall of axostylus axostyle protection tube 9, and mount pad 10 is located the left and right sides of main linkage circle 3, installs belt 6 on the outer wall of main linkage circle 3, and slave linkage circle 7 is installed to the other end of belt 6. A speed reducer 12 is installed at one end of the shaft rod protection tube 9, an upper platform 11 is installed on the lower surface of the speed reducer 12, supporting pieces 13 are welded on the outer portions of the lower surface of the upper platform 11, and a lower platform 14 is welded at the bottom end of each supporting piece 13. The shaft lever mounting end of the speed reducer 12 is respectively provided with a bearing limiting pipe III 21 and a bearing limiting pipe I15, and the upper surfaces of the bearing limiting pipe III 21 and the bearing limiting pipe I15 are respectively provided with a probe IV 22 in a magnetic attraction manner. The turbine pump body 16 is installed to the one end of the first bearing limit pipe 15, the second bearing limit pipe 17 is installed to the one end of the turbine pump body 16, the blade installation wheel 18 is installed to the one end of the second bearing limit pipe 17, a protruding shaft pipe is installed on the left wall of the blade installation wheel 18, the second probe 19 is installed on the upper surface of the protruding shaft pipe, and the third probe 20 is installed on the upper surface of the second bearing limit pipe 17.
As shown in fig. 3 and 5, in the embodiment of the present invention, the rotating mechanical vibration online monitoring test apparatus further includes a second probe 19, a second phase source 28 and a Z-direction source 27 are disposed between the second probe 19 and the third probe 20, and the second phase sources 28 are symmetrically distributed on the left and right side bearing tube portions of the turbine pump body 16. The Z-direction seismic sources 27 are symmetrically distributed at the bearing tube parts on the left side and the right side of the blade mounting wheel 18, the first bearing limiting tube 15 and the fourth probe 22 are symmetrically distributed at the driving end and the output end of the speed reducer 12, and the V-direction seismic source 26 is arranged between the first symmetrical bearing limiting tube 15 and the fourth symmetrical probe 22. Screws 29 are mounted on the left side and the right side of the upper surface of the mounting seat 10, and the bottoms of the screws 29 penetrate through the upper surface of the mounting seat 10 and are fixed with the top end of the support piece 13 in a threaded mode. And one ends of the second probe 19, the third probe 20, the fourth probe 22 and the first probe 5 are respectively provided with a lead, and one end of the lead is provided with a sensor. A V-direction seismic source 26 is arranged on the right side of the H-direction seismic source 25, a Z-direction seismic source 27 is arranged on the right side of the V-direction seismic source 26, a phase seismic source 28 is arranged on the right side of the Z-direction seismic source 27, vibration is collected between each group after vibration is received, the vibration is used for being received by a lead matched sensor, the sensor moves along with a measured point of a vibration table to generate charges corresponding to a motion track, and the H-direction seismic source 25, the V-direction seismic source 26, the Z-direction seismic source 27 and the phase seismic source 28 are respectively used for regulating and transmitting the trend of vibration signals. The sensor is respectively butted with a signal processor 33, a data acquisition analyzer 34 and a motor voltage regulator 36, a case 24 is arranged on the outer frame of the signal processor 33, the data acquisition analyzer 34 and the motor voltage regulator 36, an access panel 23 is arranged on the front vertical surface of the case 24, a side guard bar 35 is arranged in the middle of the right side of the inner cavity of the case 24 and used for regulating the voltage of the motor, acquiring data, processing signals, providing excitation signals for the sensor and preprocessing the monitored signals, after the data is acquired, the signals are classified and transmitted to the PLC, the PLC transmits the data to a data acquisition module in real time, the data are transmitted back to the PLC through the format and the vibration curve of a map, the PLC is transmitted to the real-time processing module, the digital signals are subjected to secondary trace corresponding electric quantity extraction and waveform display and load analysis along with signal lines, and the same live exhibition is carried out through the display screen.
Example 2
As shown in fig. 3 and 8, in a preferred embodiment, the rotary mechanical vibration online monitoring test device of the present invention includes a second probe 19, a monitoring body 30 is installed at a monitoring end of the second probe 19, a seismic source amplifier 31 is installed at a bottom end of the monitoring body 30, a magnetic block 32 is fixed at a bottom end of the seismic source amplifier 31, the second probe 19, the third probe 20 and the fourth probe 22 have the same structure, the second probe 19 at a real-time acquisition part can collect the fluctuation of the seismic source amplifier 31 by matching with the monitoring body 30, the magnetic block 32 is used for magnetically attracting and fixing different vibration tool parts, and the seismic source amplifier 31 collects the minimum vibration energy and transmits the vibration energy into the second probe 19 through the monitoring body 30.
As shown in fig. 9, the rotating machinery vibration online monitoring test device comprises a signal processor 33, one end of the signal processor 33 is connected with a PLC through a wire, a built-in unit of the PLC is respectively connected with a storage module, a switch output module, a data acquisition module and a real-time processing display module, and an external expansion unit of the PLC is connected with a graphic instrument.
Example 3
As shown in fig. 1 to 2, in a preferred embodiment, the rotary machine vibration online monitoring test device of the present invention includes a speed reducer 12, and a gear barrel 47 is built in the speed reducer 12. The power output end of the tooth mouth cylinder 47 is provided with a liquid inlet pipe 48, the driving end of the liquid inlet pipe 48 is provided with a second rotating shaft part 51, the outer wall of the second rotating shaft part 51 is provided with a turbine assembly 50, and the liquid outlet end of the turbine assembly 50 is provided with the liquid inlet pipe 48. The left wall of the turbine assembly 50 is welded with a welding arc piece 52, one end of the second rotating shaft piece 51 is provided with a fourth rotating shaft piece 54, one end of the fourth rotating shaft piece 54 is provided with a third rotating shaft piece 53, and one end of the fourth rotating shaft piece 54 is provided with a first rotating shaft piece 49. The bottom end of the welding arc piece 52 is welded with a welding arc connecting piece 57, the bottom end of the welding arc connecting piece 57 is welded with a damping table 56, one side of the damping table 56 is welded with a bearing plane 58, and one end of the first rotating shaft part 49 is provided with an impeller 55.
In a preferred embodiment, a tool cabinet 46 is mounted on the lower surface of the detection tool mechanism 45, a patch plate 44 is mounted on the upper portion of the right wall of the detection tool mechanism 45, a slotted support box 37 is welded on one side of the patch plate 44, a signal receiver 38 is mounted on the upper portion, close to the right, of the upper table surface of the tool cabinet 46, a nut support member 39 is arranged on the left side of the signal receiver 38, the nut support member 39 is also located on the upper table surface of the tool cabinet 46, a signal receiver II 40 is mounted on the receiving end of the nut support member 39, a limiting tool 41 is fixed on the upper table surface, close to the rear, of the tool cabinet 46 through a nut, a power supply reservoir 42 is mounted at the top end of the limiting tool 41, and.
Example 4
The assembly process of the rotary mechanical vibration online monitoring test device specifically comprises the following steps: the detection tool mechanism 45 is assembled on the upper table top of the tool cabinet 46, the first signal receiver 38 and the second signal receiver 40 are installed at the corresponding positions of the upper table top of the tool cabinet 46, it is considered that the interval between the first signal receiver 38 and the second signal receiver 40 should not be too long, the limiting tool 41 is lapped on the upper table top of the tool cabinet 46, the third receiver 43 is butted with the power accumulator 42 installed on the upper surface of the limiting tool 41, the third receiver 43 is used for receiving signals of the second probe 19 and the like and feeding back the signals to the second signal receiver 40, the signals are fed back to the first signal receiver 38 through the second signal receiver 40, the first signal receiver 38 feeds back the signals to the sensor, and the first signal receiver 38 and the second signal receiver 40 are butted through a signal transmission lead. The welded arc piece 52, the third rotating shaft part 53 and the fourth rotating shaft part 54 which are positioned in the inner cavity of the turbine pump body 16 are all axially arranged, the third probe 20 arranged on the shell can receive the seismic sources of the three groups of axial assemblies, and one end of the impeller 55 is butted with the axial part of the blade mounting wheel 18, namely the butted part is vibrated when receiving vibration, namely, the shaft rod at one end of the impeller 55 is received through the second probe 19, and an amplitude signal is fed back.
Example 5
The working principle of the rotary mechanical vibration online monitoring test device is as follows: and butting the shaft tube part of the blade mounting wheel 18, the shaft tube part of the turbine pump body 16, the bearing part of the speed reducer 12 and the butt joint part of the shaft rod protection tube 9 of the rotary machine assembly, namely the probe II 19, the probe III 20, the probe IV 22 and the main linkage ring 3, wherein the blade mounting wheel 18, the turbine pump body 16, the speed reducer 12 and the shaft rod protection tube 9 respectively represent vibration signals of different parts of the whole rotary machine.
Two groups of H-direction seismic sources 25 are arranged at the position of the blade mounting wheel 18, four groups of V-direction seismic sources 26 are arranged at the position of the turbine pump body 16, the four groups of V-direction seismic sources 26 are respectively and symmetrically distributed at a driving part and a transmission part of an axle tube, two groups of Z-direction seismic sources 27 are arranged at the position of the speed reducer 12, and two groups of phase seismic sources 28 are arranged at the position of the external bearing connecting piece 4, vibration is collected after the vibration is received between the groups, the vibration is used for receiving by a lead matched with a sensor, and the sensor moves along with a measured point of a vibration table to generate charges corresponding to.
Finally, the received signal of the sensor is contacted with the signal processor 33, the data acquisition analyzer 34 and the motor voltage regulator 36, and is used for carrying out voltage regulation on the motor, data acquisition and signal processing, providing an excitation signal for the sensor and preprocessing the monitored signal, after the data is acquired, the signal is classified and transmitted to the PLC, the PLC transmits the data to the data acquisition module in real time, the data is transmitted back to the PLC through the format and the vibration curve of the map, and the PLC is transmitted to the real-time processing module, carries out extraction of electric quantity corresponding to secondary trace and display and loading of the waveform on the digital signal, analyzes along with a signal line, and carries out same live display through the display screen.
In addition, the storage module for inputting and storing is used for collecting the past data and determining an average value, and when the data collected by the PLC exceeds the average value of the storage module, an alarm is given and displayed through the display screen.
The second probe 19 at the same live acquisition part can collect the fluctuation of the seismic source amplifier 31 by matching with the upper monitoring body 30, the magnetic block 32 is used for magnetically attracting and fixing different vibration tool parts, and the seismic source amplifier 31 collects the extremely small vibration energy and transmits the extremely small vibration energy into the second probe 19 through the monitoring body 30.
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 (10)
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| CN113074781A (en) * | 2021-03-31 | 2021-07-06 | 成渝钒钛科技有限公司 | Intelligent diagnosis method and intelligent diagnosis system for faults of rotating machinery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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