CN116733764B - Hub load testing system and method for ultra-high-speed heat dissipation fan - Google Patents
Hub load testing system and method for ultra-high-speed heat dissipation fan Download PDFInfo
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- CN116733764B CN116733764B CN202310653248.7A CN202310653248A CN116733764B CN 116733764 B CN116733764 B CN 116733764B CN 202310653248 A CN202310653248 A CN 202310653248A CN 116733764 B CN116733764 B CN 116733764B
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- 238000012360 testing method Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 42
- 230000017525 heat dissipation Effects 0.000 title claims description 13
- 238000011156 evaluation Methods 0.000 claims abstract description 68
- 230000006698 induction Effects 0.000 claims abstract description 51
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The invention provides a system and a method for testing the load of a hub of an ultra-high speed heat radiation fan, comprising an air heater, parts arranged on the hub of the fan, an acquisition module, an induction module, an evaluation module and an early warning module, wherein the acquisition module acquires the rotating speed data of the hub of the fan in the rotating process, the induction module acquires the vibration data of the hub of the fan in the rotating process, the evaluation module is used for evaluating the data of the acquisition module and the induction module to form an evaluation result, and the alarm module triggers early warning of different grades according to the evaluation result and carries out alarm prompt to a manager; according to the invention, through the mutual matching of the evaluation module, the acquisition module and the induction module, the load state of parts in the fan hub can be evaluated, a test result is obtained according to the evaluation result, and the intelligent degree of the whole system, the convenience and reliability of the test are improved.
Description
Technical Field
The invention relates to the technical field of air heater testing, in particular to a system and a method for testing the hub load of an ultra-high-speed heat dissipation fan.
Background
The fan hub is connected with the blades and the transmission chain to play a role in energy transfer. The fan hub is internally provided with various components, such as a variable pitch drive control cabinet, a power supply cabinet, a lubrication system and the like. Because the hub rotates continuously, the direction and the magnitude of the gravity load applied to each component can show 360-degree rotation periodic fluctuation. The hub has many mechanical parts such as socket fasteners and electronic and electric parts such as circuit boards, capacitors, resistors, inductors and the like, and the parts need to work stably under the rotating load with the direction and the size being changed for a long time, so that the reliability is high.
For the strength reliability test of common component parts, a vibration test bed is generally adopted for testing, but the vibration test bed has the condition that the testing environment is inconsistent with the failure mechanism of the actual operation environment. In a general vibration test bed, only the acceleration in the up-down direction can be simulated at high frequency, weak links are found out in a mode that the change of the high-frequency amplitude direction is large, and in practice, the change of the acceleration direction in the hub is 360-degree low-frequency cyclic change. Because the fan hub is large and the rotation speed is low and is generally within 12rpm at present, the main low-frequency load of the parts in the hub is the gravity acceleration load with the direction changing continuously by taking the parts as a reference system.
In order to more fit the actual working condition of the acceleration change in the hub, the weak link of the hub is more accurately found, and a test platform which is closer to the actual running working condition and adjustable in working condition is needed.
The invention is designed for solving the problems that the prior art generally has the defects of lack of testing means, incapability of testing parts of a fan hub associated with a heat radiation fan, low intelligent degree, poor interactivity, incapability of providing accurate testing results and the like.
Disclosure of Invention
The invention aims to provide a system and a method for testing the hub load of an ultra-high-speed heat dissipation fan, aiming at the defects existing at present.
In order to overcome the defects in the prior art, the invention adopts the following technical scheme:
the system comprises an air heater, parts arranged on a fan hub, an acquisition module, an induction module, an evaluation module and an early warning module, wherein the acquisition module acquires rotating speed data of the fan hub in the rotating process, the induction module acquires vibration amplitude data of the fan hub in the rotating process, the evaluation module is used for evaluating the rotating speed data acquired by the acquisition module and the vibration amplitude data acquired by the induction module to form an evaluation result, and the alarm module triggers early warning of different grades according to the evaluation result and carries out alarm prompt to a manager;
the acquisition module is arranged on an output shaft of the air heater, the induction module is arranged on a part of the air heater to induce vibration on the part, the acquisition module comprises an acquisition unit and a first data storage unit, the acquisition unit acquires rotating speed data in the rotating process of the fan hub, and the first data storage unit stores the rotating speed data acquired by the acquisition unit;
the induction module comprises an induction unit and a second data storage unit, wherein the induction unit collects vibration amplitude data of parts in the rotating process of the fan hub, and the second data storage unit stores the vibration amplitude data collected by the induction unit;
the evaluation module acquires vibration amplitude data acquired by the induction unit and rotating speed data acquired by the acquisition unit, and calculates an evaluation index evaluation according to the following formula:
wherein ViA is peak amplitude representing vibration amplitude data, speed device represents change rate of rotation speed data, meanSpeed represents average rotation speed, meanViA represents amplitude average value of vibration amplitude data;
and if the evaluation index evaluation is higher than a set monitoring threshold Monitor, triggering the early warning module to prompt the manager and prompting the current early warning level in real time.
Optionally, the acquisition unit includes photoelectric sensor, signal amplifier, signal processing submodule, photoelectric sensor passes through the combination of infrared light source and photodiode, realizes the monitoring to rotational speed when wheel hub rotates, converts the rotational speed who detects into the electrical signal and exports signal amplification module, and signal amplifier amplifies the weak electrical signal that photoelectric sensor module output, signal processing submodule receives signal amplifier's signal, carries out filtering, gain control processing to it to obtain the rotational speed signal.
Optionally, the induction unit includes an electromagnetic induction coil, a signal processor, and a data analyzer, where the electromagnetic induction coil is installed above a component and collects magnetic field changes generated during vibration of the component, the signal processor is configured to process the magnetic field changes detected by the electromagnetic induction coil to obtain an electrical signal related to a vibration amplitude characteristic, and the data analyzer is configured to process the electrical signal and convert the electrical signal into a digital signal related to the vibration amplitude data.
Optionally, the early warning module comprises an early warning unit and an interaction unit, the early warning unit triggers early warning prompts of different grades according to the evaluation result of the evaluation module, and the interaction unit carries out interaction prompt on the early warning prompts to a manager;
the early warning unit determines the triggered early warning prompts of different grades according to the following formula:
and after the early warning unit obtains the accurate early warning prompt level, sending an interaction instruction to the interaction unit, and triggering the interaction unit to carry out interaction prompt on the current early warning prompt level to the manager.
Optionally, the mean MeanViA of the vibration amplitude data is calculated according to the following formula:
wherein x is 1 、x 2 、x 3 、...、x n Each sample value respectively representing vibration amplitude data points, and n represents the number of samples of vibration amplitude data;
wherein the data points of the vibration amplitude include maximum and minimum values of the vibration amplitude waveform.
Optionally, the acquisition unit converts the rotation speed signal into rotation speed data, and transmits the rotation speed data obtained by conversion to the evaluation module.
In addition, the invention also provides a method for testing the hub load of the ultra-high speed heat dissipation fan, which comprises the following steps:
s1, respectively installing an acquisition module and an induction module on a fan hub and parts, and driving the fan to rotate through a driving device; the method comprises the steps of carrying out a first treatment on the surface of the
S2, the acquisition module acquires rotating speed data of the fan hub;
s3, the sensing module acquires vibration amplitude data of the parts;
s4, the evaluation module acquires the rotating speed data acquired by the acquisition module and the vibration amplitude data acquired by the induction module, and calculates an evaluation index evaluation;
s5, comparing the evaluation index evaluation with a set monitoring threshold Monitor to determine whether to trigger different grades of early warning of the early warning module;
s6, the early warning module carries out interactive reminding on the alarm prompt to the manager.
Optionally, the load testing method further includes: and the periphery of the part is nested with a metal shell, and vibration amplitude data of the metal shell and the part are detected through the induction module.
Optionally, the load testing method further includes: and detecting the rotating speed of the hub through the acquisition module, and converting the rotating speed signal acquired in the rotating process into rotating speed data.
The beneficial effects obtained by the invention are as follows:
1. the load state of parts in the fan hub can be evaluated through the mutual matching of the evaluation module, the acquisition module and the induction module, and a test result is obtained according to the evaluation result, so that the intelligent degree of the whole system and the convenience and reliability of the test are improved;
2. through the mutual coordination of the early warning unit and the interaction unit, a manager can dynamically master the current test state, so that the manager has better interaction comfort with the system, and the manager can dynamically test the palm result;
3. the vibration of the parts is collected through the induction module, so that the accuracy and the intelligent degree of vibration induction or detection of the parts are improved;
4. the rotating speed of the hub of the air heater is acquired through the acquisition module so as to obtain accurate rotating speed data, vibration data of the parts under different loads are tested according to the accurate rotating speed data, and accurate guidance is provided for production of the air heater under different working conditions.
Drawings
The invention will be further understood from the following description taken in conjunction with the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. Like reference numerals designate like parts in the different views.
Fig. 1 is a schematic block diagram of the overall structure of the present invention.
FIG. 2 is a schematic diagram of an evaluation flow of the evaluation module according to the present invention.
Fig. 3 is a schematic flow chart of the induced vibration of the induction unit of the present invention.
Fig. 4 is a flow chart of the gravitational acceleration loading module of the present invention.
Fig. 5 is a schematic diagram of a test platform mounting structure of an air heater and a motor according to the present invention.
Fig. 6 is a schematic view of the installation relationship between the electromagnetic induction coil and the component of the present invention.
Reference numerals illustrate: 1-an air heater; 2-an electric motor; 3-parts; 4-electromagnetic induction coil.
Detailed Description
The following embodiments of the present invention are described in terms of specific examples, and those skilled in the art will appreciate the advantages and effects of the present invention from the disclosure herein. The invention is capable of other and different embodiments and its several details are capable of modification and variation in various respects, all without departing from the spirit of the present invention. The drawings of the present invention are merely schematic illustrations, and are not intended to be drawn to actual dimensions. The following embodiments will further illustrate the related art content of the present invention in detail, but the disclosure is not intended to limit the scope of the present invention.
Embodiment one: according to the embodiments shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, and fig. 6, the system for testing the load of the hub of the ultra-high speed heat dissipation fan comprises a hot air fan, parts arranged on the hub of the fan, and further comprises an acquisition module, an induction module, an evaluation module and an early warning module, wherein the acquisition module acquires the rotation speed data of the hub of the fan in the rotation process, the induction module acquires the vibration amplitude data of the hub of the fan in the rotation process, the evaluation module is used for evaluating the rotation speed data acquired by the acquisition module and the vibration amplitude data acquired by the induction module to form an evaluation result, and the alarm module triggers early warning of different grades according to the evaluation result and carries out alarm prompt to a manager;
the central processing unit is respectively connected with the acquisition module, the induction module, the evaluation module and the early warning module in a control way and is used for carrying out centralized control on the acquisition module, the induction module, the evaluation module and the early warning module;
the acquisition module is arranged on an output shaft of the air heater, the induction module is arranged on a part of the air heater to induce vibration on the part, the acquisition module comprises an acquisition unit and a first data storage unit, the acquisition unit acquires rotating speed data in the rotating process of the fan hub, and the first data storage unit stores the rotating speed data acquired by the acquisition unit;
optionally, the collecting unit includes a photoelectric sensor, a signal amplifier, and a signal processing sub-module, where the photoelectric sensor monitors a rotation speed when the hub rotates through a combination of an infrared light source and a photodiode, converts the detected rotation speed into an electrical signal, outputs the electrical signal to the signal amplifying module, the signal amplifier amplifies a weak electrical signal output by the photoelectric sensor module, and the signal processing sub-module receives a signal of the signal amplifier, and performs filtering and gain control processing on the signal to obtain a rotation speed signal;
the first data storage unit comprises a first memory and a first transmitter, the first memory is used for storing the rotating speed data acquired by the acquisition unit, and the first transmitter is used for transmitting the stored data of the first memory to a database for storage for inquiry;
the induction module comprises an induction unit and a second data storage unit, wherein the induction unit collects vibration amplitude data of parts in the rotating process of the fan hub, and the second data storage unit stores the vibration amplitude data collected by the induction unit;
optionally, the induction unit includes an electromagnetic induction coil, a signal processor, and a data analyzer, where the electromagnetic induction coil is installed above a component and collects magnetic field changes generated during vibration of the component, the signal processor is configured to process the magnetic field changes detected by the electromagnetic induction coil to obtain an electrical signal related to a vibration amplitude characteristic, and the data analyzer is configured to process the electrical signal and convert the electrical signal into a digital signal related to the vibration amplitude data;
in this embodiment, a metal casing is disposed on the outer periphery of the component, so that the sensing unit can obtain vibration amplitude data of the component in the process of sensing the component, and meanwhile, the metal casing can also promote sensitivity and reliability of the sensing unit to vibration amplitude of the component;
in addition, the parts may be provided with a metal housing or a metal material capable of generating a magnetic field change with the electromagnetic induction coil, which is not described in detail in this embodiment;
in the present embodiment, there is provided a method for converting electromagnetic data detected by an electromagnetic induction coil into vibration data:
1) Electromagnetic sampling coil perceives magnetic field: when the hub of the air heater vibrates, the magnetic field changes, and the electromagnetic sampling coil can sense the changes;
2) Converting the magnetic field into an electrical signal: the electromagnetic sampling coil can convert the perceived magnetic field change into an electric signal, and the size and the change rule of the electric signal are related to the vibration characteristics of the hub of the air heater;
3) Amplifying and sampling the electrical signal: the electric signal output by the electromagnetic sampling coil is weak, the amplitude of the signal needs to be enhanced by an amplifying circuit, and then the signal is converted into a digital signal by adopting an analog-to-digital converter;
4) Recording and analyzing vibration data: the collected digital signals can be recorded and subjected to subsequent processing and analysis, such as calculation of parameters of frequency spectrum, frequency, amplitude and the like of the vibration signals through FFT conversion, so as to know the vibration characteristics of the hub of the air heater;
the second data storage unit comprises a second memory and a second transmitter, the second memory is used for storing the rotating speed data acquired by the acquisition unit, and the second transmitter is used for transmitting the stored data of the second memory to a database for storage for inquiry;
the evaluation module acquires vibration amplitude data acquired by the induction unit and rotating speed data acquired by the acquisition unit, and calculates an evaluation index evaluation according to the following formula:
wherein ViA is peak amplitude representing vibration amplitude data, speed device represents change rate of rotation speed data, meanSpeed represents average rotation speed, meanViA represents amplitude average value of vibration amplitude data;
if the evaluation index evaluation is higher than a set monitoring threshold Monitor, triggering the early warning module to prompt the manager and prompting the current early warning level in real time;
if the evaluation index evaluation is lower than a set monitoring threshold Monitor, continuing to Monitor the evaluation index;
the set monitoring threshold Monitor is set by a system or an administrator, which is a technical means well known to those skilled in the art, and those skilled in the art can query related technical manuals to obtain the technology, so that the description is omitted in this embodiment;
the load state of parts in the fan hub can be evaluated through the mutual matching of the evaluation module, the acquisition module and the induction module, and a test result is obtained according to the evaluation result, so that the intelligent degree of the whole system and the convenience and reliability of the test are improved;
optionally, the early warning module comprises an early warning unit and an interaction unit, the early warning unit triggers early warning prompts of different grades according to the evaluation result of the evaluation module, and the interaction unit carries out interaction prompt on the early warning prompts to a manager;
the early warning unit determines the triggered early warning prompts of different grades according to the following formula:
after the early warning unit obtains an accurate early warning prompt level, an interaction instruction is sent to the interaction unit, and the interaction unit is triggered to carry out interaction prompt on the current early warning prompt level to the manager;
the interaction unit comprises an interaction display screen and a prompt buzzer, wherein the interaction display screen is used for displaying early warning prompts of the early warning unit, and the prompt buzzer is provided with at least 4 buzzer categories and corresponds to 4 early warning prompt levels;
the sounds of different types of buzzes are different, so that a manager can easily distinguish different early warning grades; meanwhile, the prompt buzzer triggers prompts of different categories according to the result of the early warning prompt level;
through the mutual coordination of the early warning unit and the interaction unit, a manager can dynamically master the current test state, so that the manager has better interaction comfort with the system, and the manager can dynamically test the palm result;
alternatively to this, the method may comprise,
the mean MeanViA of the vibration amplitude data is calculated according to the following formula:
wherein x is 1 、x 2 、x 3 、...、x n Each sample value respectively representing vibration amplitude data points, and n represents the number of samples of vibration amplitude data;
wherein the data points of the vibration amplitude comprise maximum and minimum values of the vibration amplitude waveform;
optionally, the acquisition unit converts the rotation speed signal into rotation speed data, and transmits the rotation speed data obtained by conversion to the evaluation module;
the rotation speed signal is converted into rotation speed data according to the following steps:
STEP1, sampling: acquiring a rotating speed signal by using a sensor module, and converting the signal into a digital signal, namely a sampling process; the sampling frequency needs to be chosen to meet the nyquist sampling theorem, i.e. the sampling frequency should be greater than twice the highest frequency of the signal to avoid sampling distortion;
STEP2, filtering: because the acquired signals may contain noise or interference, the signals need to be filtered; a digital filter is generally used for denoising and filtering so as to improve the signal quality;
STEP3, calculating: the rotation speed data can be obtained by calculating the acquired signals; the specific calculation method can be selected according to the type and characteristics of the acquired signals, for example, fourier transform and other methods can be used; the fourier transform is a conventional manner of calculating the acquired rotation speed signal, and a person skilled in the art can query a related technical manual to obtain the technology, so that the description is omitted in this embodiment;
in addition, the invention also provides a method for testing the hub load of the ultra-high speed heat dissipation fan, which comprises the following steps:
s1, respectively installing an acquisition module and an induction module on a fan hub and parts, and driving the fan to rotate through a driving device, wherein the driving device comprises but is not limited to the following: a motor;
s2, the acquisition module acquires rotating speed data of the fan hub;
s3, the sensing module acquires vibration amplitude data of the parts;
s4, the evaluation module acquires the rotating speed data acquired by the acquisition module and the vibration amplitude data acquired by the induction module, and calculates an evaluation index evaluation;
s5, comparing the evaluation index evaluation with a set monitoring threshold Monitor to determine whether to trigger different grades of early warning of the early warning module;
s6, the early warning module carries out interactive reminding on the alarm prompt to the manager;
optionally, the load testing method further includes: a metal shell is nested on the periphery of the part, and vibration amplitude data of the metal shell and the part are detected through the induction module; the metal shell is preferably made of a metal material capable of generating magnetic field change with the electromagnetic induction coil;
optionally, the load testing method further includes: detecting the rotation speed of the hub through the acquisition module, and converting a rotation speed signal acquired in the rotation process into rotation speed data;
and testing the heat dissipation fan hub by the load testing method to accurately obtain the vibration of the heat dissipation fan hub and the internal parts so as to adjust the mounting position and the mounting firm strength of the parts according to the test result.
Embodiment two: this embodiment should be understood to include all the features of any one of the previous embodiments and be further modified on the basis thereof, as shown in fig. 1, 2, 3, 4, 5, 6, and in that the fan hub load testing system further includes a gravitational acceleration load module for presenting periodic changes to the simulated hub in the direction of gravitational force that can be detected;
the gravity acceleration load module comprises three acceleration sensors and a data acquisition unit, wherein the data acquisition unit acquires and stores data acquired by the three acceleration sensors, and the acceleration sensors are used for measuring the vibration state of the fan hub in a three-dimensional space;
the fan hub is provided with three acceleration sensors, and the gravity acceleration load to be considered is the gravity from the fan hub, and the centrifugal force and tangential force born by the acceleration sensors; the resultant acceleration and direction to which the three acceleration sensors are subjected is calculated by the following formula:
in the method, in the process of the invention,the gravity acceleration vector, the magnitude g, is vertically downward, and can be expressed as:
in the method, in the process of the invention,is a unit vector pointing vertically downward;
as a centrifugal force vector, expressed as:
wherein ω is the angular velocity of the fan hub, measured directly by an angular velocity sensor or encoder, r is the distance of the acceleration sensor from the hub rotation center,the unit vector points to the radial direction of the position of the sensor relative to the rotation center of the hub;
as tangential force vector, expressed as:
wherein alpha is the angular acceleration of the fan hub, which is directly measured by an angular accelerometer, r is the distance between the acceleration sensor and the rotation center of the hub,the unit vector points to the tangential direction of the position of the sensor relative to the rotation center of the hub;
the vibration information of the hub in different directions can be obtained by processing the composite acceleration measured by the three sensors;
in this embodiment, time domain or frequency domain analysis is performed on vibration acceleration data acquired at a plurality of moments to obtain gravity acceleration load information in a full period;
and the load of the air heater hub is tested through the gravity acceleration load module so as to grasp the gravity acceleration load information in the whole period of the air heater hub, and the accuracy and the reliability of the test of the air heater hub are improved.
The foregoing disclosure is only a preferred embodiment of the present invention and is not intended to limit the scope of the invention, so that all equivalent technical changes made by applying the description of the present invention and the accompanying drawings are included in the scope of the present invention, and in addition, elements in the present invention can be updated as the technology develops.
Claims (9)
1. The system is characterized by further comprising an acquisition module, an induction module, an evaluation module and an early warning module, wherein the acquisition module acquires rotating speed data of the fan hub in the rotating process, the induction module acquires vibration data of the fan hub in the rotating process, the evaluation module is used for evaluating the rotating speed data acquired by the acquisition module and the acquired vibration amplitude data acquired by the induction module to form an evaluation result, and the early warning module triggers early warning of different grades according to the evaluation result and carries out warning prompt to a manager;
the acquisition module is arranged on an output shaft of the air heater, the induction module is arranged on a part of the air heater to induce vibration on the part, the acquisition module comprises an acquisition unit and a first data storage unit, the acquisition unit acquires rotating speed data in the rotating process of the fan hub, and the first data storage unit stores the rotating speed data acquired by the acquisition unit;
the induction module comprises an induction unit and a second data storage unit, wherein the induction unit collects vibration amplitude data of parts in the rotating process of the fan hub, and the second data storage unit stores the vibration amplitude data collected by the induction unit;
the evaluation module acquires vibration amplitude data acquired by the induction unit and rotating speed data acquired by the acquisition unit, and calculates an evaluation index evaluation according to the following formula:
；
wherein ViA is peak amplitude representing vibration amplitude data, speed device represents change rate of rotation speed data, meanSpeed represents average rotation speed, meanViA represents amplitude average value of vibration amplitude data;
and if the evaluation index evaluation is higher than a set monitoring threshold Monitor, triggering the early warning module to prompt the manager and prompting the current early warning level in real time.
2. The hub load testing system of the ultra-high-speed heat dissipation fan according to claim 1, wherein the collecting unit comprises a photoelectric sensor, a signal amplifier and a signal processing submodule, the photoelectric sensor monitors the rotation speed through the combination of an infrared light source and a photodiode when the hub rotates, the detected rotation speed is converted into an electric signal and is output to the signal amplifying module, the signal amplifier amplifies the weak electric signal output by the photoelectric sensor module, and the signal processing submodule receives the signal of the signal amplifier and performs filtering and gain control processing on the signal to obtain a rotating speed signal.
3. The ultra-high speed heat radiation fan hub load testing system according to claim 2, wherein the induction unit comprises an electromagnetic induction coil, a signal processor and a data analyzer, the electromagnetic induction coil is installed above a part and collects magnetic field changes generated in the vibration process of the part, the signal processor is used for processing the magnetic field changes detected by the electromagnetic induction coil to obtain an electric signal related to vibration amplitude characteristics, and the data analyzer is used for processing the electric signal and converting the electric signal into a digital signal related to vibration amplitude data.
4. The hub load testing system of the ultra-high-speed heat dissipation fan according to claim 3, wherein the early warning module comprises an early warning unit and an interaction unit, the early warning unit triggers early warning prompts of different grades according to the evaluation result of the evaluation module, and the interaction unit carries out interaction prompt on the early warning prompts to a manager;
the early warning unit determines the triggered early warning prompts of different grades according to the following formula:
；
and after the early warning unit obtains the accurate early warning prompt level, sending an interaction instruction to the interaction unit, and triggering the interaction unit to carry out interaction prompt on the current early warning prompt level to the manager.
5. The ultra-high speed heat dissipation fan hub load testing system of claim 4, wherein the mean MeanViA of the vibration amplitude data is calculated according to the formula:
；
wherein x is 1 、x 2 、x 3 、...、x n Each sample value respectively representing vibration amplitude data points, and n represents the number of samples of vibration amplitude data;
wherein the data points of the vibration amplitude include maximum and minimum values of the vibration amplitude waveform.
6. The ultra-high speed heat dissipation fan hub load testing system according to claim 5, wherein the acquisition unit converts the rotational speed signal into rotational speed data, and transmits the rotational speed data obtained by conversion to the evaluation module.
7. The method for testing the hub load of the ultra-high speed cooling fan, which is applied to the system for testing the hub load of the ultra-high speed cooling fan according to claim 6, is characterized by comprising the following steps:
s1, respectively installing an acquisition module and an induction module on a fan hub and parts, and driving the fan to rotate through a driving device;
s2, the acquisition module acquires rotating speed data of the fan hub;
s3, the sensing module acquires vibration amplitude data of the parts;
s4, the evaluation module acquires the rotating speed data acquired by the acquisition module and the vibration amplitude data acquired by the induction module, and calculates an evaluation index evaluation;
s5, comparing the evaluation index evaluation with a set monitoring threshold Monitor to determine whether to trigger different grades of early warning of the early warning module;
s6, the early warning module carries out interactive reminding on the alarm prompt to the manager.
8. The method for testing the hub load of a super speed cooling fan according to claim 7, further comprising: and the periphery of the part is nested with a metal shell, and vibration amplitude data of the metal shell and the part are detected through the induction module.
9. The method for testing the hub load of a super speed cooling fan according to claim 8, further comprising: and detecting the rotating speed of the hub through the acquisition module, and converting the rotating speed signal acquired in the rotating process into rotating speed data.
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| CN102434387A (en) * | 2011-11-16 | 2012-05-02 | 三一电气有限责任公司 | Draught fan detection and diagnosis system |
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| CN111290373A (en) * | 2020-03-17 | 2020-06-16 | 许昌许继风电科技有限公司 | Fan controller detection system and detection method |
| JP6855612B1 (en) * | 2020-03-09 | 2021-04-07 | 新菱冷熱工業株式会社 | Abnormality diagnostic device for rotating machines and its method |
| CN217107523U (en) * | 2022-07-04 | 2022-08-02 | 中车工业研究院(青岛)有限公司 | Testing device and testing system for fan performance |
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| CN102434387A (en) * | 2011-11-16 | 2012-05-02 | 三一电气有限责任公司 | Draught fan detection and diagnosis system |
| CN107101825A (en) * | 2017-05-16 | 2017-08-29 | 北京博华信智科技股份有限公司 | Engine truck gear-box and bearing running testing stand operation apparatus for evaluating and method |
| JP6855612B1 (en) * | 2020-03-09 | 2021-04-07 | 新菱冷熱工業株式会社 | Abnormality diagnostic device for rotating machines and its method |
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