CN205785859U - A kind of identification device of cleaner unit gas-liquid mixture phase - Google Patents

Abstract

This utility model relates to the identification device of a kind of cleaner unit gas-liquid mixture phase, when cleaner unit runs, pressure cleaner unit can obtain the Resistance Value of cleaner unit, anemobiagraph wind speed, liquid level sensor obtains the level value in tank, and pass to computer, by computer, the data gathered are analyzed, and correlated characteristic vector is compared with sample, thus differentiate the internal gas-liquid couple state of cleaner unit timely and effectively, judge its dust removing effects, reduce cleaner unit to run with non-regime mode, indirectly improve its overall dust removing effects, ensure that cleaner unit can run under energy-efficient pattern, thus reduce the situation causing particulate matter to be escaped in a large number because of cleaner unit operational effect and occur, improve the combined dust-eliminating efficiency of cleaner unit.

Description

A kind of identification device of cleaner unit gas-liquid mixture phase

Technical field

This utility model relates in a kind of self-induced scrubber work process, for monitoring the dress of its gas-liquid mixture phase Put, the identification device of a kind of cleaner unit gas-liquid mixture phase.

Background technology

Self-induced scrubber simple in construction, easy to maintenance, cost is relatively low, is the maximum discharge row such as mining industry, metallurgy and Coal Chemical Industry The conventional environmental protection equipment that industry fine particle reduces discharging, and obtain a wide range of applications.But reality application finds, auto-excitation type is removed Dirt device is often in closed environment, cannot observe gas-liquid mixture phase in running, and gas-liquid mixture phase runs with cleaner unit State and efficiency of dust collection have very big relation, when operational factor (such as wind speed, liquid level, structure etc.) changes, and cleaner unit gas-liquid Admixture will change, and directly affect dust removing effects.

When laboratory is tested, research worker also tends to only check gas-liquid mixed shape by transparent windows naked eyes State, has certain subjectivity, does not also have the efficient apparatus of a kind of quantitative judge gas-liquid mixed, the gas-liquid mixed shape to cleaner unit State detects and identifies.

Additionally, the instrument price of existing on-line monitoring cleaner unit efficiency of dust collection is expensive, ultimate principle is monitoring dust concentration, Monitoring device it is easily damaged, it is impossible to reach monitoring effect when dust concentration is the biggest.And currently there are no a kind of can passing through and supervise Survey gas-liquid mixture phase and carry out the device of indirect monitoring cleaner unit running status, and then the most lasting monitoring cleaner unit runs effect Really.

Utility model content

The purpose of this utility model is a kind of monitoring cleaner unit gas-liquid mixture phase proposed for cleaner unit running status Detection device, it by the pressure parameter in monitoring cleaner unit running, and by correlation analysis, can identify dedusting The gas-liquid mixed pattern of device, and then differentiate the running status of cleaner unit, indirect monitoring cleaner unit operational effect.Eliminate because of dedusting Device is internal to be closed, cannot observe, and cannot the defect of timely and effective judgement cleaner unit operational effect；Set up cleaner unit R&D process The effective ways of rational judgment gas-liquid mixed effect.

This utility model solves its technical problem and be the technical scheme is that the knowledge of a kind of cleaner unit gas-liquid mixture phase Other device, including pressure-inducting device, liquid level sensor, anemobiagraph, liquid level transmission and stabilizing adjusting device, data collecting card and calculating Machine；Described cleaner unit includes inlet channel, tank, dedusting chamber, current limiting plate, dewatering plate and dedusting fan, and described inlet channel sets In tank side, dedusting chamber, current limiting plate, dewatering plate and dedusting fan are sequentially located at above tank, and inlet channel is with tank even The one end connect arranges choke block, forms restriction；Described anemobiagraph is arranged in inlet channel；The transmission of described liquid level and stable tune Regulating device is arranged on the lower section of restriction；Liquid level transmission and stabilizing adjusting device are rectangle baffle plate, itself and cell body plane perpendicular Install, and and cell body install inlet channel side sidewall between formed level gauging room, the top of baffle plate is to cell body sidewall arc Shape extends to be closed level gauging ceiling mouth, and baffle plate bottom arranges connection level gauging room and the liquid-through hole of cell body along its length, Liquid level sensor is located at above interior volume；Described pressure-inducting device is arranged on the lower section of dedusting fan；The master of described pressure-inducting device Body is a L-shaped pipeline, and its horizontal body pressure point of arranging internal with cleaner unit is threadeded, and longitudinal pipe body is positioned at cleaner unit Outside threadeding with pressure transducer, pipe interior arranges the water leg of depression, water leg company along the outer rim tube wall of corner Being connected to downward drain pipe, under duty, the outer end of L-shaped pipeline is with end cap seal.

Described internal diameter of the pipeline 6-10mm.

Described pressure guiding pipe total length controls within 12cm, wherein vertical direction 3-5cm.

Described pressure point is arranged on below the air port of dedusting fan.

The transmission of described liquid level and stabilizing adjusting device select resistant material to make.

The transmission of described liquid level and stabilizing adjusting device distance and its nearer cell body sidewall wall 10-20cm.

The transmission of described liquid level and the 1/15-1/20 that liquid-through hole aperture is barrier width of stabilizing adjusting device, be dislocatedly distributed Arrange.

Described liquid level sensor range: 0～0.6m, signal exports: 0～5V DC, response time≤5ms, repeatable accuracy ± 1.0mm, ambient temperature-30～+85 DEG C.

The recognition methods of a kind of cleaner unit gas-liquid mixture phase, by gathering the pressure signal of house outlet, analyzes pressure Gas liquid two-phase flow information entrained in fluctuation signal detects gas-liquid two-phase admixture, concretely comprises the following steps:

Step 1) making gas-liquid mixture phase identification sample:

Step 1.1) gas-liquid couple state is divided into faint fluctuation model, hydrostatic potential difference pattern, resonance water attack pattern, shearing Liquid curtain pattern and volume air-breathing bubble pattern；

Step 1.2) pressure at the wind speed, liquid level and the house outlet that gather respectively under above-mentioned five kinds of patterns in cleaner unit Fluctuation information, measures the corresponding level parameter of different mode simultaneously, carries out the pressure oscillation information under different wind speed, liquid levels Statistical analysis, spectrum analysis, obtain dust remover resistance Changing Pattern, sorts out the drag characteristics value of corresponding modes, and obtains pressure The power spectral density PSD changes in distribution situation of fluctuation information, show that self-induced scrubber gaseous pressure vibration frequency mainly collects Middle scope, and frequency range is divided into n frequency range；

Step 1.3) from power spectral density plot, extract the characteristic vector that can distinguish different mode respectively, including merit Frequency range corresponding to peak value under the peak ranges of each frequency range, relative peak scope and different mode in rate spectrum density figure, knot Close drag characteristic and level parameter, then sort out the scope of each characteristic vector value, and calculate, determine feature under each pattern The corresponding interval of vector；Wherein, the specific level scope under liquid level difference pattern is [y1, y2]；Resonance water attack pattern under low again and again Section frequency range corresponding to peak value is [n1, n2], and the frequency range corresponding to intermediate-frequency band peak value is [n3, n4]；Shear liquid Under curtain pattern, frequency range corresponding to intermediate-frequency band peak value be [q5, q6], when there is little shearing corresponding to low frequency frequency range peak value Frequency range be [q1, q2], the frequency range corresponding to intermediate-frequency band peak value is [q3, q4]；

Step 2) wind speed, liquid level and the pressure oscillation information that gather under running status in cleaner unit be analyzed, obtain Take and the characteristic vector corresponding to the characteristic vector in step 1.3；

Step 2.1) by monitoring system, pressure oscillation primary signal is acquired, obtain its power spectral density plot, with Time obtain wind speed and liquid level information；

Step 2.2) primary signal and power spectral density plot are analyzed, extract the higher correlated characteristic of discrimination to Amount, the peak ranges of the most each frequency range and relative peak scope:

Step 2.2.1) power spectral density plot is divided into n frequency range, extract respectively in each mode power spectrum density figure Peak-peak in first frequency range to the n-th frequency range, then, sorts out each frequency range peak ranges under each pattern；

Step 2.2.2) calculate under all patterns the second frequency range to the n-th frequency range relative to the percentage ratio of the first frequency range, and Sort out the relative peak scope under each pattern:

Step 3) the gas-liquid CGCM in the cleaner unit under running status is identified:

Step 3.1) the individual features vector model that extracted of two characteristic vector scopes based on step 2.2 and step 1.3 Enclose and make comparisons, due to faint fluctuation model high band peak value maximum compared with other pattern high band peak values minima also Low, the minima of volume air-breathing bubble pattern high band peak value substantially exceeds compared with the maximum of other pattern high band peak values, therefore can Identify faint fluctuation model and volume air-breathing bubble pattern well；

Step 3.2) then, reset pressure fluctuate signal, calculate out dust remover resistance size, according to dust remover resistance Characteristic, detects whether its Resistance Value is more than regulation Resistance Value A, if drag characteristic is more than regulation Resistance Value A, meanwhile, passes through liquid In the liquid level whether specific level scope [y1, y2] under hydrostatic potential difference pattern in level sensor detection dedusting chamber, the most then remove Dirt device internal flow form is hydrostatic potential difference pattern；If it is not, then for shearing liquid curtain pattern or resonance water attack pattern；

Step 3.3) detection frequency corresponding to low frequency frequency range peak value whether in the range of [n1, n2], detect intermediate frequency simultaneously Whether the frequency corresponding to peak value in frequency range is in the range of [n3, n4], if meet the two condition simultaneously, for resonance water attack Pattern, otherwise, detection intermediate-frequency band in the frequency corresponding to peak value whether in the range of [q5, q6], if, then for shear liquid Curtain pattern；Or, detection frequency corresponding to low frequency frequency range peak value, whether in the range of [q1, q2], detects intermediate-frequency band simultaneously Whether the interior frequency corresponding to peak value is in the range of [q3, q4], if meet the two condition simultaneously, also for shearing liquid curtain mould Formula, if being unsatisfactory for, is then other patterns.

Described cleaner unit gaseous pressure vibration frequency mainly concentrates scope to be 0-30Hz, and frequency range is divided into low 0- 10Hz, middle 10-20Hz, tri-frequency ranges of high 20-32Hz.

The peak ranges of faint fluctuation model high band is 0-20020, and the peak ranges of volume air-breathing bubble pattern high band is 1.51851E+6,2.53083E+7。

Described regulation Resistance Value A is 300Pa.

The beneficial effects of the utility model are: when cleaner unit runs, pressure cleaner unit can obtain the Resistance Value of cleaner unit, Anemobiagraph wind speed, liquid level sensor obtains the level value in tank, and passes to computer, by the computer data to being gathered It is analyzed, and correlated characteristic vector is compared with sample, thus differentiate cleaner unit internal gas-liquid coupling timely and effectively State, it is judged that its dust removing effects, reduces cleaner unit and runs with non-regime mode, indirectly improves its overall dust removing effects, it is ensured that Cleaner unit can run under energy-efficient pattern, thus reduces the feelings causing particulate matter to be escaped in a large number because of cleaner unit operational effect Condition occurs, and improves the combined dust-eliminating efficiency of cleaner unit.

Accompanying drawing explanation

Accompanying drawing 1 is the structural representation identifying device of a kind of cleaner unit gas-liquid mixture phase.

Accompanying drawing 2 is the structural representation of pressure-inducting device.

Accompanying drawing 3 is liquid level transmission and the structural representation of stabilizing adjusting device.

Accompanying drawing 4 is the intelligent monitor system flow chart identifying device of a kind of cleaner unit gas-liquid mixture phase.

Accompanying drawing 5A1 is the spectrogram under liquid level 42mm and wind speed 2.25m/s.

Accompanying drawing 5A2 is the spectrogram under liquid level 42mm and wind speed 4.93m/s.

Accompanying drawing 5A3 is the spectrogram under liquid level 42mm and wind speed 9.45m/s.

Accompanying drawing 5A4 is the spectrogram under liquid level 42mm and wind speed 9.13m/s.

Accompanying drawing 5B1 is the spectrogram under liquid level 24mm and wind speed 2.68m/s.

Accompanying drawing 5B2 is the spectrogram under liquid level 24mm and wind speed 5.55m/s.

Accompanying drawing 5B3 is the spectrogram under liquid level 24mm and wind speed 7.82m/s.

Accompanying drawing 5B4 is the spectrogram under liquid level 24mm and wind speed 9.10m/s.

Accompanying drawing 5C1 is the spectrogram under liquid level 10mm and wind speed 1.05m/s.

Accompanying drawing 5C2 is the spectrogram under liquid level 10mm and wind speed 2.25m/s.

Accompanying drawing 5C3 is the spectrogram under liquid level 10mm and wind speed 4.32m/s.

Accompanying drawing 5C4 is the spectrogram under liquid level 10mm and wind speed 8.89m/s.

Accompanying drawing 5D1 is the spectrogram under liquid level 0mm and wind speed 0.09m/s.

Accompanying drawing 5D2 is the spectrogram under liquid level 0mm and wind speed 2.07m/s.

Accompanying drawing 5D3 is the spectrogram under liquid level 0mm and wind speed 3.62m/s.

Accompanying drawing 5D4 is the spectrogram under liquid level 0mm and wind speed 7.62m/s.

Accompanying drawing 5E1 is liquid level-13mm and spectrogram under wind speed 0.30m/s.

Accompanying drawing 5E2 is liquid level-13mm and spectrogram under wind speed 1.05m/s.

Accompanying drawing 5E3 is liquid level-13mm and spectrogram under wind speed 2.85m/s.

Accompanying drawing 5E4 is liquid level-13mm and spectrogram under wind speed 5.85m/s.

Accompanying drawing 5F1 is liquid level-23mm and spectrogram under wind speed 0.33m/s.

Accompanying drawing 5F2 is liquid level-23mm and spectrogram under wind speed 0.58m/s.

Accompanying drawing 5F3 is liquid level-23mm and spectrogram under wind speed 1.85m/s.

Accompanying drawing 5F4 is liquid level-23mm and spectrogram under wind speed 6.05m/s.

In figure, 1. cleaner unit, 2. tank, 3. inlet channel, 4. choke block, 5. dedusting chamber, 6. current limiting plate, 7. dewatering plate, 8. dedusting fan, 9. liquid level transmission and stabilizing adjusting device, 10. pressure point, 11. pressure-inducting devices, 11-1. female thread, outside 11-2. Screw thread, 11-3. water leg, 11-4. drain pipe, 12. anemobiagraphs, 13. liquid level sensors, 14. pressure transducers, 15. data acquisitions Truck, 16. computers, 17. liquid levels.

Detailed description of the invention:

In conjunction with Fig. 1, Fig. 2, Fig. 3 it can be seen that the identification device of a kind of cleaner unit 1 gas-liquid mixture phase, fill including impulse Put 11, liquid level sensor 13, anemobiagraph 12, liquid level transmission and stabilizing adjusting device 9, pressure transducer 14, data collecting card 15 With computer 16；Described cleaner unit 1 includes inlet channel 3, tank 2, dedusting chamber 5, current limiting plate 6, dewatering plate 7 and dedusting fan 8, Described inlet channel 3 is located at tank 2 side, and dedusting chamber 5, current limiting plate 6, dewatering plate 7 and dedusting fan 8 are sequentially located at tank 2 Top, one end that inlet channel 3 is connected with tank 2 arranges choke block 4, forms restriction；Described anemobiagraph 12 is arranged on air inlet In passage 3；The transmission of described liquid level and stabilizing adjusting device 9 are arranged on the lower section of restriction；Liquid level transmission and stabilizing adjusting device 9 For rectangle baffle plate, it is installed with cell body plane perpendicular, and and cell body install and form liquid level between the sidewall of inlet channel 3 side Measuring chamber, the top of baffle plate extends to cell body sidewall arc to be closed level gauging ceiling mouth, and baffle plate bottom is arranged along its length Connection level gauging room and the liquid-through hole of cell body, liquid level sensor 13 is located at above interior volume；Described pressure-inducting device 11 is installed Lower section at dedusting fan 8；The main body of described pressure-inducting device 11 is a L-shaped pipeline, and the end of its horizontal body is provided with outer spiral shell The stricture of vagina 11-2 pressure point 10 that arrange internal with cleaner unit 1 is threadeded, and it is outside that longitudinal pipe body is positioned at cleaner unit 1, and its end is provided with Female thread 11-1, threadeds with pressure transducer 14, and pipe interior arranges the water leg of depression along the outer rim tube wall of corner 11-3, water leg 11-3 connect downward drain pipe 11-4, and under duty, the outer end of L-shaped pipeline is with end cap seal；Described Anemobiagraph 12, liquid level sensor 13 and pressure transducer 14 are all connected with data collecting card 15, and data collecting card 15 connects calculating Machine 16, constitutes cleaner unit 1 and monitors system.

Described pressure guiding pipe internal diameter of the pipeline 6-10mm.

Described pressure guiding pipe total length controls within 12cm, wherein vertical direction 3-5cm.

Described pressure point 10 is arranged on below the air port of dedusting fan 8.

The liquid phase that the setting of described end cap is possible to prevent in cleaner unit 1 enters in pressure transducer 14, to the pressure collected Difference signal produces impact, causes unnecessary error.

The transmission of described liquid level and stabilizing adjusting device 9 select resistant material to make.

The transmission of described liquid level and stabilizing adjusting device 9 distance and its nearer cell body sidewall wall 10-20cm.

The transmission of described liquid level and the 1/15-1/20 that liquid-through hole aperture is barrier width of stabilizing adjusting device 9, be dislocatedly distributed Arrange.Fluctuate in liquid phase on the left of this device (i.e. liquid phase between this device and left side constraint wall) and dedusting chamber 5 violent not The most directly measure the liquid phase connection of its position, utilize law of connected vessels, be difficult to more greatly measure its position by the fluctuation in dedusting chamber 5 Liquid level 17 be delivered to the relatively stable liquid level 17 in left side of this device, reduce the gas phase fluctuation impact on liquid level 17, stable Liquid level 17 position, it is simple to measure.

Described liquid level sensor 13 selects the sensor that market is commonly used, range: 0～0.6m, and signal exports: 0～5V DC, response time≤5ms, repeatable accuracy ± 1.0mm, ambient temperature-30～+85 DEG C.

Data collecting card 15 selects market routine high-speed collection card, and sample frequency is not less than 1kHz, and sampling number is not less than 5120。

Market conventional computer selected by computer 16, and system requirements is not less than windows Xp, internal memory 2GB.

In conjunction with Fig. 4 and Fig. 5 A1-Fig. 5 F4, the recognition methods of a kind of cleaner unit 1 gas-liquid mixture phase, the first step: to various Under wind speed and liquid level running status, the Pressure Fluctuation Signal of cleaner unit 1 outlet is acquired, and then carries out power spectral-density analysis, In the range of showing that self-induced scrubber 1 gaseous pressure vibration frequency is concentrated mainly on 0-30Hz, choose different liquid level difference wind speed Pressure signal carry out spectrum analysis, obtain power spectral density PSD changes in distribution situation, cleaner unit 1 gas phase PSD figure with gas-liquid couple State is different, has obvious characteristic；

As b0 < 0mm, when wind speed is less, PSD figure has obvious dominant frequency, and other frequency range PSD value near frequency 2Hz The faintest, as shown in Fig. 5 A1,5B1 and 5C1, in conjunction with gas-liquid two-phase couple state it can be seen that this state is gas-liquid coupling Faint fluctuation model, now, liquid and gas all fluctuate with the fixed frequency of about 2Hz.

Increasing with air velocity, gas-liquid is coupled into resonance water attack pattern, and PSD figure shows as significantly " adherent effect ", Gaseous pressure fluctuation dominant frequency concentrates on lower frequency, and such as Fig. 5 A3,5B2 and 5C2, when this is due to resonance water attack, liquid level 17 occurs Overall Pitching by a relatively large margin, frequency is less, and the fluctuation of other frequency range does not has obvious crest；Low frequency crest Peak value apparently higher than the peak value of the non-resonant behavior of neighbouring flow velocity, this explanation, the energy of resonance water attack focuses primarily upon maintenance The liquid level 17 of low frequency fluctuates.

Increasing further with wind speed, resonance water attack is progressively transitioned into shearing liquid curtain pattern, and gaseous pressure PSD figure is at high band Obvious crest occur, such as Fig. 5 A4,5B4 and 5C4, about frequency 18Hz, all there is obvious ripple in the PSD figure of three liquid levels Peak, and raise this crest frequency of occurrences with liquid level and have increase tendency；After this phenomenon is mainly due to entering shearing liquid curtain pattern, Air-flow forms continuous print shear action to liquid level 17, produce a large amount of drop or liquid curtain, the pressure oscillation direct reaction of gas phase liquid This change procedure of phase.And the region between resonance water attack and shearing liquid curtain pattern, then occur in the range of 0-20Hz The unconspicuous crest of multiple regularity, the PSD Distribution value in this frequency range is average, such as Fig. 5 B3 and 5C3, multiple crests Occur there is also a certain amount of liquid level 17 fluctuation mainly due to resonance water attack changeover portion, cause restriction in wave process big Amount drop, liquid curtain excite the impact on gaseous pressure, and overall being evenly distributed then increases mainly due to air velocity, improves gas Liquid mixed effect, all exists in making vibration frequency on a large scale.

Raising (b0 >=0mm) with liquid level, the general morphologictrend of gaseous pressure PSD figure is close with during relatively low liquid level, carefully Difference in joint trend.When cleaner unit 1 is in hydrostatic potential difference pattern, PSD figure has one in the range of lower frequency (0-8Hz) Individual more significantly crest, when this crest is in throttling liquid level difference, air-flow passes through produced by cleaner unit 1 with bubbling form Pressure oscillation changes, and such as Fig. 5 D1,5E1 and 5F1, Fig. 5 D1 fluctuation in this frequency range is the most in disorder, mainly due to b0= 0mm, when air velocity is relatively low, air-flow has bubbling and shears two kinds of forms liquid level 17, makes the change of stream pressure have many Individual crest.

And raise further with air velocity, gas-liquid is coupled into volume air-breathing bubble pattern, exists and low liquid level shears liquid curtain The waveform that the PSD figure of pattern is similar to, is formed about a complementary wave peak at 20Hz；But the PSD value in 0-10Hz frequency range is the most relatively Height, distribution is more average, such as Fig. 5 D4,5E4 and 5F4.This is that gas-liquid mixed is very abundant, gas owing to entering volume air-breathing bubble pattern Stream carries big quantity of fluid and enters dedusting chamber 5, and the biggest quantity of fluid has wrapped up again a large amount of drop and entered liquid internal, the complexity of mixing Degree makes the frequency range distribution of pressure oscillation more, occurs in that being relatively evenly distributed in the range of 0-10Hz.

It was accordingly found that each pattern has the characteristic vector of its uniqueness, thus extract and can distinguish under different mode respectively The value of characteristic vector (such as power spectrum peak, frequency etc.), then, sort out the scope of each characteristic vector value, and carry out Corresponding calculating, determines the corresponding interval of characteristic vector under each pattern.

Analysis and research find, the peak ranges of each frequency range, relative peak peak ranges and do not sympathize with in power spectral density plot Frequency range corresponding to peak value under condition, and combine dust remover resistance characteristic and the level parameter of specific location of early-stage Study Cleaner unit internal flow pattern can be identified well.

Power spectral density plot is identified by second step, it is judged that gas-liquid mixture phase: the spy in power spectral density plot Levy waveform and can show the typical characteristic of cleaner unit 1 gas-liquid mixture phase, by the knowledge of the typical characteristic to power spectral density plot Not reaching to identify the purpose of gas-liquid mixture phase, implementation process is as follows:

First, by monitoring system, pressure oscillation primary signal is acquired, and obtains its power spectral density plot；

Secondly, primary signal and power spectral density plot are analyzed, extract the higher correlated characteristic of discrimination vectorial:

First, extract the first frequency range (such as 0-5HZ frequency band) peak-peak in each mode power spectrum density figure, the second frequency Section (such as 5-10HZ frequency band) peak-peak, by that analogy, the peak-peak in the n-th frequency range, then, sort out under each pattern Each frequency range peak ranges, such as table 1 below:

Table 1

Second, calculate the second frequency range under the whole circumstances, the 3rd frequency range ... the n-th frequency range relative to the first frequency range value (i.e. Second frequency range, the 3rd frequency range ... the n-th frequency range accounts for the percent of the first frequency range), and sort out the relative peak scope under each pattern, Such as table 2 below:

Table 2

Research finds, based on two above characteristic vector scope, faint fluctuation model, volume air-breathing bubble pattern and other three kinds Pattern has higher discrimination, can it be identified respectively well.Then, by primary signal, measure its drag size, According to cleaner unit 1 drag characteristic, detect whether its Resistance Value is more than setting, in conjunction with the liquid of dedusting chamber 5 offside at restriction Position, in detecting whether the specific level scope [y1, y2] under hydrostatic potential difference pattern by liquid level sensor 13, the most then removes Dirt device 1 internal flow form is hydrostatic potential difference pattern；If it is not, then for shearing liquid curtain pattern or resonance water attack pattern.Then, Detection frequency corresponding to low frequency frequency range peak value whether in the range of [n1, n2] (resonance low frequency frequency fluctuation scope during generation), Whether the frequency corresponding to peak value in detection intermediate-frequency band (there is intermediate frequency fluctuation during resonance in the range of [n3, n4] simultaneously Scope), if meet the two condition simultaneously, for resonance water attack pattern, otherwise, detect corresponding to the peak value in intermediate-frequency band Whether frequency (there is intermediate frequency fluctuation range when shearing) in the range of [q5, q6], if, then for shearing liquid curtain pattern；Or, Detection frequency corresponding to low frequency frequency range peak value whether (Frequency fluctuation model when there is little shearing in the range of [q1, q2] Enclose), whether the frequency corresponding to peak value in detection intermediate-frequency band is in the range of [q3, q4] (in when there is little shearing simultaneously Frequently fluctuation range), if meet the two condition simultaneously, also for shearing liquid curtain pattern, if being unsatisfactory for, then it is other patterns.

Embodiment

For the identification device of this specific cleaner unit 1 gas-liquid mixture phase of this laboratory research, it is implemented Way is as follows:

First, the power spectrum under each regime mode is analyzed (as described in the first step above)

Secondly, based on power spectral density map analysis, extract the characteristic vector under each pattern,

First, the frequency domain mainly concentrated by energy is divided into three frequency bands (value of the most above-mentioned n is 3), then, respectively Extract the first frequency range (0-10HZ frequency band) peak-peak, the second frequency range (10-20HZ frequency in each mode power spectrum density figure Section) peak-peak, the 3rd frequency range (20-32HZ frequency range) peak-peak, then, sort out each frequency range peak value model under each pattern Enclose, such as table 3 below:

Table 3

Second, calculate the second frequency range under the whole circumstances, the 3rd frequency range relative to the first frequency range value (the i.e. second frequency range, 3rd frequency range accounts for the percent of the first frequency range), and sort out the relative peak scope under each pattern, such as table 4 below:

Table 4

Research finds, based on two above characteristic vector scope, faint fluctuation model, volume air-breathing bubble pattern and other three kinds Pattern has higher discrimination, can it be identified respectively well.Then, by primary signal, measure its drag size, According to cleaner unit 1 drag characteristic, detect whether its Resistance Value is more than a certain specific setting, in conjunction with dedusting chamber at restriction The liquid level of 5 offsides, the specific level scope [16.5,18] detected whether under hydrostatic potential difference pattern by liquid level sensor 13 In (value of the most above-mentioned y1, y2 is respectively 16.5,18), the most then cleaner unit 1 internal flow form is hydrostatic potential difference pattern；If Not, then for shearing liquid curtain pattern or resonance water attack pattern.Then, whether detection frequency corresponding to low frequency frequency range peak value exists In the range of [0,0.3] (value of the most above-mentioned n1, n2 is respectively 0,0.3) (resonance low frequency frequency fluctuation scope during generation), examine simultaneously Survey the frequency corresponding to peak value in intermediate-frequency band whether in the range of [10,15] (value of the most above-mentioned n3, n4 is respectively 10,15) (intermediate frequency fluctuation range during resonance occurs), if meet the two condition simultaneously, for resonance water attack pattern, otherwise, detects intermediate frequency Whether the frequency corresponding to peak value in frequency range (occurs in the range of [15,20] (value of the most above-mentioned q5, q6 is respectively 15,20) Intermediate frequency fluctuation range during shearing), if, then for shearing liquid curtain pattern；Or, detection frequency corresponding to low frequency frequency range peak value Whether (Frequency fluctuation when there is little shearing in the range of [6.4,7.4] (value of the most above-mentioned q1, q2 is respectively 6.4,7.4) Scope), whether in [10,12.6], (value of the most above-mentioned q3, q4 is respectively for the frequency corresponding to peak value in detection intermediate-frequency band simultaneously Be 10,12.6) in the range of (occur little shear time intermediate frequency fluctuation range), if meet the two condition simultaneously, also for shear liquid Curtain pattern, if being unsatisfactory for, is then other patterns.

Claims (8)

1. an identification device for cleaner unit gas-liquid mixture phase, passes including pressure-inducting device, liquid level sensor, anemobiagraph, liquid level Pass and stabilizing adjusting device, data collecting card and computer；Described cleaner unit includes inlet channel, tank, dedusting chamber, current limliting Plate, dewatering plate and dedusting fan, described inlet channel is located at tank side, dedusting chamber, current limiting plate, dewatering plate and dedusting fan Sequentially being located at above tank, one end that inlet channel is connected with tank arranges choke block, forms restriction；Described anemobiagraph is installed In inlet channel；The transmission of described liquid level and stabilizing adjusting device are arranged on the lower section of restriction；Liquid level transmission and stable regulation Device is rectangle baffle plate, and it is installed with cell body plane perpendicular, and and cell body install and formed between the sidewall of inlet channel side Level gauging room, the top of baffle plate extends to cell body sidewall arc to be closed level gauging ceiling mouth, and baffle plate bottom is along its length Arranging connection level gauging room and the liquid-through hole of cell body, liquid level sensor is located at above interior volume；Described pressure-inducting device is installed Lower section at dedusting fan；The main body of described pressure-inducting device is a L-shaped pipeline, the setting internal with cleaner unit of its horizontal body Pressure point is threaded, and longitudinal pipe body is positioned at cleaner unit outside and threadeds with pressure transducer, and pipe interior is along corner Outer rim tube wall arranges the water leg of depression, and water leg connects downward drain pipe, and under duty, the outer end of L-shaped pipeline is with end Lid seals.

The identification device of a kind of cleaner unit gas-liquid mixture phase the most according to claim 1, it is characterised in that described pipeline Internal diameter 6-10mm.

The identification device of a kind of cleaner unit gas-liquid mixture phase the most according to claim 1, it is characterised in that described impulse Pipe total length controls within 12cm, wherein vertical direction 3-5cm.

The identification device of a kind of cleaner unit gas-liquid mixture phase the most according to claim 1, it is characterised in that described pressure Point is arranged on below the air port of dedusting fan.

The identification device of a kind of cleaner unit gas-liquid mixture phase the most according to claim 1, it is characterised in that described liquid level Transmission and stabilizing adjusting device select resistant material to make.

The identification device of a kind of cleaner unit gas-liquid mixture phase the most according to claim 1, it is characterised in that described liquid level Transmission and stabilizing adjusting device distance and its nearer cell body sidewall wall 10-20cm.

The identification device of a kind of cleaner unit gas-liquid mixture phase the most according to claim 1, it is characterised in that described liquid level Transmission and the 1/15-1/20 that liquid-through hole aperture is barrier width of stabilizing adjusting device, be dislocatedly distributed setting.

The identification device of a kind of cleaner unit gas-liquid mixture phase the most according to claim 1, it is characterised in that described liquid level Transducer range: 0～0.6m, signal exports: 0～5V DC, response time≤5ms, repeatable accuracy ± 1.0mm, ambient temperature- 30～+85 DEG C.