CN102393244A - Method and apparatus for rapid detection of overall energy efficiency of electrical equipment - Google Patents
Method and apparatus for rapid detection of overall energy efficiency of electrical equipment Download PDFInfo
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- CN102393244A CN102393244A CN2011103603632A CN201110360363A CN102393244A CN 102393244 A CN102393244 A CN 102393244A CN 2011103603632 A CN2011103603632 A CN 2011103603632A CN 201110360363 A CN201110360363 A CN 201110360363A CN 102393244 A CN102393244 A CN 102393244A
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Abstract
The invention discloses a method for rapid detection of overall energy efficiency of electrical equipment. The method is characterized in that the method comprises the following steps that: (1), a frequency spectrum datum line of a rated condition or a special condition of electrical equipment is determined as well as a corresponded benchmarking database is established; (2), a wide spectrum collection acceleration vibration sensor collects a vibration signal of a to-be-measured part and the collected vibration signal is transformed into a frequency spectrum signal by Fourier transform; (3), a frequency spectrum variance and energy efficiency value association analysis is carried out on the frequency spectrum signal collected in the step (2) and the frequency spectrum datum line in the benchmarking database established in the step (1); and (4), a corresponded failed part is directly found according to the analyzed result as well as replacement or optimization can be carried out. According to the method for rapid detection of overall energy efficiency of electrical equipment in the invention, it is unnecessary to carry out lots of electrical parameter and load detection on a motor and peripheral equipment ( or a peripheral system); and it is also no need to carry out a tedious analysis on load stray loss. Meanwhile, certain dangers of electrical parameter detection can also be avoided.
Description
Technical field
The present invention relates to all-round method for quick and the device of imitating of a kind of electrical equipment.
Background technology
Global climate change and energy scarcity problem are outstanding day by day, and China carries out multi-level, omnibearing research in numerous energy-saving field; Wherein, motor and electrical equipment coverage thereof are extensively, energy-saving potential is big is well-known, and the energy-conservation research and extension of motor and power driven system is applied in the national energy conservation and occupies strategic position.Yet motor is as the heart of electrical equipment (system), and the complicacy of this body structure of electrical equipment (system), operation, all mathematical model, quantification of targets, efficiency quick diagnosis, accuracy technological transformation etc. proposed stern challenge.The laboratory study calibration of motor and peripheral electrical equipment (system) is dispatched from the factory rated efficiency within relevant GB or industry standard tolerance band with factory.Along with long-play, key factor is under bearing wear and spindle balance system deviation, and the efficiency parameter directly significantly reduces; And wearing and tearing and imbalance will speed up the comprehensive efficiency of equipment (system) and reduce rapidly.Except remarkable reduction efficiency, a series of indexs that also cause the apparatus processing precision to be reduced to representative indirectly descend with uneven in wearing and tearing.
The traditional sense function that powers on imitate to detect the ratio according to output power and power input, measures rated voltage and electric current indirectly and to the processing of load stray loss.But in practical operation,, cause comparatively difficulty of actual efficiency test and appraisal because the efficiency detection itself is the out of true of a complicated physical process and measurement.The efficiency of the electrical equipment (system) of the complicacy that motor peripherals is formed just detects difficulty more, even difficulty modeling Accurate Analysis.Classic method length consuming time, with the electrical parameters detection be that data represented is numerous and diverse, workload is huge, generally can not online multi-parameter comprehensive detect and must be by mechano-electronic, relevant speciality personnel operation and analysis such as electric.
Summary of the invention
Goal of the invention: the objective of the invention is to deficiency, provide a kind of electrical equipment fast all-round method for quick and the device of imitating to prior art.
Technical scheme: each parts of motor and peripherals according to characteristics such as this body structures, form self natural frequency when design is dispatched from the factory.Because critical component is bearing and axle in each parts of motor, bearing and axle construction, material etc. confirm that natural frequency (characteristic frequency) is promptly definite.In long-time running, the imbalance of the wearing and tearing of bearing and axle will directly cause the efficiency parameter to reduce.The critical component bearing of appreciable impact efficiency does not receive the motor movement state and randomly changing with the axle natural frequency in motor and the peripheral electrical equipment.The all-round method for quick of imitating of electrical equipment of the present invention comprises the steps:
(1) establishes the frequency spectrum datum line of electrical equipment declared working condition or ad hoc operating mode, and set up reply mark database mutually; The efficiency value was done the multi-group data demarcation according to interval of definition after efficiency value and critical component lost efficacy under declared working condition and the ad hoc operating mode; Bearing can draw the characteristic frequency spectrum of one or more original papers of locking rapidly as standard component according to disclosed correlated characteristic frequency and frequency spectrum computing formula both at home and abroad; Or cooperate with the professional institution, directly transfer the library file reference value;
(2) gather the vibration signal that the acceleration vibration transducer is gathered part to be measured by wide spectrum, become spectrum signal through Fourier transform;
(3) the frequency spectrum datum line of the spectrum signal and the step (1) of step (2) collection being set up in the mark database is done spectral change amount and the analysis of efficiency numerical associations;
(4) directly find corresponding inefficacy part by analysis result, replace or optimize.
Wherein in the step (1), the frequency spectrum data of complete machine part to be measured in service was established when said frequency spectrum datum line was dispatched from the factory by qualified electrical equipment; Or, establish the frequency spectrum datum line by the frequency spectrum data of the electrical equipment of normal operation.
Above-mentioned spectral change amount and the analysis of efficiency numerical associations can be undertaken by special spectrum analyzer system, and analysis result can directly be exported.Wide spectrum acceleration vibration transducer can be according to the detection needs; Can be through simultaneously parallelly connected many sensors of frequency spectrum harvester; Link to each other with computing machine through capture card, the efficiency result can handled and export to the spectrum analyzer system in the computing machine simultaneously to multiple signals again.
By above-mentioned detection method, can keep the best efficiency state operation of motor and electrical equipment, thereby realize the comprehensive reformation energy saving way of all parts.The vibration transducer installation site does not receive concrete qualification, and through fast locking device at relevant diverse location clamping relatively, signal amplitude has strong and weak the variation, and frequency is unaffected.
The device of the above-mentioned detection method of realization according to the invention; Comprise: wide spectrum is gathered acceleration vibration transducer, data line or multi pass acquisition card and Computer Database; Said wide spectrum is gathered the acceleration vibration transducer and is linked to each other with part to be measured, and the signal of gathering is input to said Computer Database through data line or multi pass acquisition card.
Beneficial effect: 1, the all-round method for quick of imitating of electrical equipment of the present invention, need not carry out a large amount of electrical quantitys and load detection to motor and peripherals (system), do not need load stray loss is done loaded down with trivial details analysis yet; Also avoided the certain risk of electrical parameters detection.2, the inventive method need not done single parameter to separate unit motor and peripherals and detects one by one, has also evaded motor and the peripherals system ensemble is difficult to the modeling analysis drawback.3, in the inventive method; Vibration frequency specturm analysis device and long-pending small and exquisite to analysis body of tool such as mark database, spectrum analyzer systems; The height professional system is integrated; Realize the online spectrum monitoring of multiparameter while of motor and peripherals (system), and not exclusively need professed machine electronics, electric personnel to gather and loaded down with trivial details analyzing and processing.4, the inventive method is in energy-saving and emission-reduction practices, to motor and electrical equipment (system) in batch can realize online, in batches, nearly all critical component frequency spectrum gather all-round imitate analyze, the also direct output printing data analysis report of fast detecting.
Description of drawings
Fig. 1 is the structural representation of apparatus of the present invention.
Fig. 2 is the inventive method schematic diagram.
The schematic diagram that Fig. 3 detects motor for sensor among the present invention.
Fig. 4 analyzes synoptic diagram for the inventive method intermediate frequency spectrum.
Fig. 5 is bearing wear and unbalanced shaft analysis chart.
Fig. 6 is efficiency assessment synoptic diagram.
Embodiment
Be elaborated in the face of technical scheme of the present invention down, but protection scope of the present invention is not limited to said embodiment.
Embodiment:As shown in Figure 1; The all-round device for fast detecting of imitating of electrical equipment according to the invention; Comprise: wide spectrum is gathered acceleration vibration transducer 1, data line or multi pass acquisition card 2 and Computer Database 3; Said wide spectrum is gathered acceleration vibration transducer 1 and is linked to each other with part to be measured, and the signal of gathering is input to said Computer Database 3 through data line or multi pass acquisition card 2.The frequency spectrum of said wide spectrum collection acceleration vibration transducer 1 is wide, the integrated chip design, and volume is little; A sensor can lock a plurality of objects simultaneously, also can batch online acquisition in many set of sensors (alternate analysis helps the precision raising between the sensor) be set simultaneously through capture card; The signal of gathering draws wear extent and degree of unbalancedness through the computer management platform to the spectrum analysis of critical component bearing, axle; Table look-up through high precision between efficiency Fitting Analysis or setting district and to realize the efficiency fast detecting.
As shown in Figure 3, wide spectrum of the present invention is gathered many group parameters such as frequency, acceleration, amplitude, estimation rotating speed, quality of balance that acceleration vibration transducer 1 can detect motor.
The present invention is that example is described in detail with the method for quick of all can imitating of automobile factory's pressing equipment; As shown in Figure 2; In the inventive method; The foundation that all can imitate fast detecting of one or one group of motor and peripherals is that nearly all parts frequency spectrum is sampled (FFT and H-FFT conversion) entirely, and the critical component bearing can identify according to characteristic frequency with axle; Wear extent and degree of unbalancedness can be done the qualitative and quantitative contrast with java standard library and analyze automatically; Demarcate but influence between key factor wear extent that the standard efficiency descends and degree of unbalancedness setting district, the linear system of match or NLS are tabled look-up and are transferred the efficiency reference value.Can realize in enormous quantities, not shut down, the special requirement of safety and fast detecting.Specifically comprise the steps:
(1) establishes the frequency spectrum datum line of pressing equipment declared working condition, and set up reply mark database mutually;
At first, clear and definite pressing equipment standard component model and nameplate parameter: comprise critical components such as motor model, bearing, axle, set up the frequency spectrum datum line according to the formula of concrete producer;
Secondly, the clamping wide spectrum is gathered vibration transducer on main motor base, need not consider axially or radially to wait on the traditional measurement relative influence in principle; Link to each other with computing machine through data line then; In computing machine; Multi-group data is made with spectrum value respectively in efficiency value (promptly the poorest efficiency value) and the efficiency value interval between them behind efficiency value under the declared working condition (being best efficiency value), the component failure to be demarcated; Foundation can be transferred the frequency spectrum reference value of demarcation as required to the mark database in database;
(2) gather the vibration signal that the acceleration vibration transducer is gathered part to be measured by wide spectrum, become spectrum signal through Fourier transform;
Concrete operation method is: pressing equipment powers on, and under the corresponding rotating speed of motor, sets reference pulse signal through probe, and measures axle and bearing characteristic frequency; Handle through FFT and H-FFT, obtain spectrum signal under the current working of complete machine and critical component axle and bearing;
(3) the frequency spectrum datum line of the spectrum signal and the step (1) of step (2) collection being set up in the mark database is done spectral change amount and the analysis of efficiency numerical associations;
As shown in Figure 4, spectrum analysis is to do frequency signal collection, FFT conversion according to the time variation amount that critical component lost efficacy, identification, analysis of key element signal; According to the interval frequency range of frequency spectrum data assessment inefficacy; As shown in Figure 5, with vibration signal spectrum H-fft analysis bearing wear and unbalanced shaft, do comparison algorithm through frequency spectrum data under the current working of measuring and to the reference value in the mark database, draw the wear extent and the unbalanced data of corresponding critical component bearing and axle,
As shown in Figure 6, related to mark database or standard component failure curve algorithmic formula, with uneven, amplitude distribution situation under the specific rotation speeds state obtains the efficiency assessment data and distributes, thereby obtains the efficiency test and evaluation report according to wear extent;
(4) directly find corresponding inefficacy part by analysis result, replace or optimize.
According to the fast detecting report data, assessment pressing equipment critical component bearing or the reducing energy consumption potential of axle and the precision of punching press " calendering " accuracy requirement, the transformation plan of assessment replacement critical component is single.
As stated, although represented and explained the present invention that with reference to specific preferred embodiment it shall not be construed as the restriction to the present invention self.Under the spirit and scope of the present invention prerequisite that does not break away from the accompanying claims definition, can make various variations in form with on the details to it
Claims (4)
1. the all-round method for quick of imitating of electrical equipment is characterized in that comprising the steps:
(1) establishes the frequency spectrum datum line of electrical equipment declared working condition or ad hoc operating mode, and set up reply mark database mutually;
(2) gather the vibration signal that the acceleration vibration transducer is gathered part to be measured by wide spectrum, become spectrum signal through Fourier transform;
(3) the frequency spectrum datum line of the spectrum signal and the step (1) of step (2) collection being set up in the mark database is done spectral change amount and the analysis of efficiency numerical associations;
(4) directly find corresponding inefficacy part by analysis result, replace or optimize.
2. the all-round method for quick of imitating of electrical equipment according to claim 1 is characterized in that:
In the step (1), the frequency spectrum data of complete machine part to be measured in service was established when said frequency spectrum datum line was dispatched from the factory by qualified electrical equipment; Or, establish the frequency spectrum datum line by the frequency spectrum data of the electrical equipment of normal operation.
3. the all-round method for quick of imitating of electrical equipment according to claim 1; It is characterized in that: the method for building up to the mark database in the step (1) is: the clamping wide spectrum is gathered vibration transducer on main motor base; Link to each other with computing machine through data line then; In computing machine, efficiency value behind efficiency value, the component failure under the declared working condition and the efficiency value interval between them are made the multi-group data demarcation with spectrum value respectively, set up the mark database.
4. device of realizing the said detection method of claim 1; It is characterized in that comprising: wide spectrum is gathered acceleration vibration transducer (1), data line or multi pass acquisition card (2) and Computer Database (3); Said wide spectrum is gathered acceleration vibration transducer (1) and is linked to each other with part to be measured, and the signal of gathering is input to said Computer Database (3) through data line or multi pass acquisition card (2).
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| CN2011103603632A CN102393244A (en) | 2011-11-15 | 2011-11-15 | Method and apparatus for rapid detection of overall energy efficiency of electrical equipment |
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| CN2011103603632A CN102393244A (en) | 2011-11-15 | 2011-11-15 | Method and apparatus for rapid detection of overall energy efficiency of electrical equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225772A (en) * | 2017-12-27 | 2018-06-29 | 合肥新沪屏蔽泵有限公司 | A kind of number shows bearing wear measuring instrument |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003054503A2 (en) * | 2001-12-07 | 2003-07-03 | Battelle Memorial Institute | Methods and systems for analyzing the degradation and failure of mechanical systems |
| CN1512032A (en) * | 2002-12-31 | 2004-07-14 | 石油大学(北京) | Real-time monitoring method and syste mfor cone bit wear situation |
| US20060171625A1 (en) * | 2003-03-28 | 2006-08-03 | Jones Barry E | Method and apparatus for sensing the condition of a device, process material or structure |
| CN101128286A (en) * | 2005-02-24 | 2008-02-20 | 乔治雷诺公司 | Equipment comprising at least one rotary member and means for measuring vibrational frequencies of said member to determine its wear condition, corresponding control unit and method |
| CN101226102A (en) * | 2007-01-15 | 2008-07-23 | 新疆风能有限责任公司 | Method of diagnosis of varying load mechanical failure |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003054503A2 (en) * | 2001-12-07 | 2003-07-03 | Battelle Memorial Institute | Methods and systems for analyzing the degradation and failure of mechanical systems |
| CN1512032A (en) * | 2002-12-31 | 2004-07-14 | 石油大学(北京) | Real-time monitoring method and syste mfor cone bit wear situation |
| US20060171625A1 (en) * | 2003-03-28 | 2006-08-03 | Jones Barry E | Method and apparatus for sensing the condition of a device, process material or structure |
| CN101128286A (en) * | 2005-02-24 | 2008-02-20 | 乔治雷诺公司 | Equipment comprising at least one rotary member and means for measuring vibrational frequencies of said member to determine its wear condition, corresponding control unit and method |
| CN101226102A (en) * | 2007-01-15 | 2008-07-23 | 新疆风能有限责任公司 | Method of diagnosis of varying load mechanical failure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225772A (en) * | 2017-12-27 | 2018-06-29 | 合肥新沪屏蔽泵有限公司 | A kind of number shows bearing wear measuring instrument |
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Application publication date: 20120328 |