CN108931270A - Diphasic stream parameter detection method based on porous restriction and acoustic emission - Google Patents
Diphasic stream parameter detection method based on porous restriction and acoustic emission Download PDFInfo
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Abstract
The diphasic stream parameter detection method based on porous restriction and acoustic emission that the present invention provides a kind of.The present invention realizes the measurement in a closed series that the differential pressure measurement based on multi-hole orifice is combined with the hydrodynamic noise measurement based on acoustic emission, solves the problems, such as noise jamming when measuring two phase flow using sound emission.The intrinsic noise of the power sources such as the vibration noise of pipeline itself, water pump air compressor can be eliminated or be weakened to detection method in through the invention, and the effect cut down and even be eliminated also is played to the noise source from other positions.Meanwhile the present invention has given full play to the advantage of multi-hole orifice and acoustic emission on respective measurement method, has kept two kinds of measurement means more rationally effective in combination, realize the two phase flow quantitative measurment based on acoustic emission by rationally designing.
Description
Technical field
The present invention relates to biphase gas and liquid flow detection technique fields, specifically a kind of to be based on porous restriction and sound emission skill
The diphasic stream parameter detection method of art.
Background technique
Differential pressure flowmeter is one of the flowmeter being most widely used in two-phase flow measurement, is generally acknowledged in two-phase at present
Flow under each flow pattern can steady operation a kind of flowmeter.It establishes flow and pressure based on split-phase or homogeneous model
The relationship of drop.It is throttle differential flowmeter that wherein research history is longest, and the method for differential pressure type all sees throttle type stream substantially
Meter.The flowmeter has many advantages, such as easy for installation, reliable operation, and during years of researches, forms mature state
Border standard all contains differential pressure flowmeter in the multiphase flow measurement system of many producers' releases at present.Widely applied throttle type is poor
Pressure type flowmeter abacus, Venturi tube and V cone flow meter.
Fluid flows through the throttle orifice plate apparatus in pipeline, and local contraction is caused near orifice plate, is just generated before and after throttling element
Pressure drop, i.e. differential pressure, differential pressure signal are related with uninterrupted.There are many improvement, day on the design of orifice flowmeter
This SONIC company designed and developed it is a kind of on flow computer can the range to range ratio carry out the orifice flow of selection
Meter, compared with traditional orifice flowmeter, extends measurement range；The New Type Intelligent Orifice Meter of recent studies on, will
Temperature and pressure signal is sent directly into live flow computer, makes benefit automatically to temperature and pressure according to changes in flow rate
It repays.
The Xu Lijun of BJ University of Aeronautics & Astronautics proposes that the moisture based on Separating Flow Pattern is surveyed using long throat Venturi tube
Measure model；Strong wait for University Of Tianjin utilizes long larynx diameter Venturi tube for gas-liquid two-phase flow measurement, establishes double difference pressure moisture
Traffic measurement model.It has also obtained largely grinding using the method that a kind of throttling set cooperation other sensors are combined measurement
Study carefully, yellow will Yao etc. effectively measures oil-gas two-phase flow using Venturi tube combination electrical capacitance tomography；The benefits such as Xu Ying
Wet gas measurement virtual height model is proposed with the mode that inner cone and venturi combine.
Orifice flowmeter becomes the current height of standardization level in the world because its structure is simple, durable, is most widely used
A kind of flowmeter, single-phase flow is measured based on standard orifice flow meter or homogeneous flow quantifier elimination is more mature, but there is also
Efflux coefficient it is unstable, linear poor, repeated not high, permanent compression loss is big the disadvantages of.In U.S.'s Marshall aviation flight
A kind of novel differential pressure type flow measuring device of heart design invention, i.e. multi-hole orifice flowmeter.Multi-hole orifice flowmeter is to tradition
Throttling set has great breakthrough, compared with Traditional differential pressure formula flowmeter, have permanent compression loss it is small, precision is high,
The advantages that range ratio is big, straight pipe is short.
Summary of the invention
The diphasic stream parameter detection method based on porous restriction and acoustic emission that it is an object of the invention to provide a kind of,
The two phase flow quantitative measurment based on acoustic emission can be realized by this method.
The object of the present invention is achieved like this: a kind of to be detected based on porous restriction and the diphasic stream parameter of acoustic emission
Method includes the following steps:
A, the diphasic stream parameter detection device based on porous restriction and acoustic emission is built；
The diphasic stream parameter detection device based on porous restriction and acoustic emission includes porous balance flow meter, difference
Pressure transmitter, acoustic emission probe, data acquisition unit and data processing unit；
The porous balance flow meter include preceding straight pipe, rear straight pipe and setting the preceding straight pipe and it is described after
Multi-hole orifice between straight pipe；The diameter of the multi-hole orifice be greater than two sections of straight tubes diameter, on the multi-hole orifice with
Two sections of opposite positions of straight tube lumen offer several throttle orifices, stretch out on the edge outside two sections of straight tubes in the multi-hole orifice
Circumferentially it is uniformly provided with several through-holes；The acoustic emission probe is correspondingly placed in the through-hole at multi-hole orifice edge；Described
The side wall of preceding straight pipe and the rear straight pipe is provided with a pressure port, and the differential pressure transmitter connects with two pressure ports；
B, flow into two phase flow from preceding straight pipe, and after flowing into after the throttle orifice on multi-hole orifice in straight pipe；
C, the differential pressure signal in preceding straight pipe and rear straight pipe is detected by the differential pressure transmitter, meanwhile, by sound emission
The flowing acoustical signal of probe detection fluid；
D, signal detected by data acquisition unit acquisition differential pressure transmitter and acoustic emission probe, and by letter collected
Number it is sent to data processing unit；
E, the data processing unit receives signal transmitted by data acquisition unit, and the stream to the two phase flow received
Dynamic acoustical signal and differential pressure signal handled, operation, to obtain the flow and phase content of two phase flow.
Step e is specific as follows:
The data processing unit obtains characteristic spectra according to the flowing acoustical signal of two phase flow, and extracts in characteristic spectra
Gaseous phase volume β containing rate is calculated in combination with following formula according to energy eigenvalue E in energy eigenvalue Eg:
βg=0.44214ln (E+663.0423) -2.87159
The data processing unit is according to gaseous phase volume β containing rateg, in combination with the pressure difference of front and back straight pipe, according to such as
The quality total flow W of two phase flow is calculated in lower formulam:
Above in formula, ε is the inflatable coefficient of two phase flow, and C is efflux coefficient, and D is preceding straight pipe and rear straight pipe
Internal diameter, β are the equivalent diameter ratio of multi-hole orifice, Δ ptpFor pressure difference of the two phase flow in two straight pipes, x is quality gassiness
Rate, x can be by gaseous phase volume β containing rategIt obtains, ρgFor the density of gaseous fluid, ρlFor the density of liquid phase fluid；
The calculation formula of the equivalent diameter ratio β of multi-hole orifice is as follows:
In above formula, d is the diameter of throttle orifice, and D is the internal diameter of preceding straight pipe and rear straight pipe, and N is the number of throttle orifice.
In step a, the internal diameter of preceding straight pipe and rear straight pipe is D, the length L of preceding straight pipe1Meet: L1>=D is rear straight
The length L of pipeline section2Meet: L2≥1.5D；And two distances of the pressure port away from multi-hole orifice are D.
In step a, the throttle orifice on the multi-hole orifice is evenly distributed on one using the center of multi-hole orifice as the center of circle
Or on multiple concentric circles；And each throttle orifice has 45 ° of preceding chamfering and 45 ° of rear chamfering.
In step a, it is equipped with ring flange at the both ends of preceding straight pipe and rear straight pipe, the multi-hole orifice passes through preceding straight tube
The ring flange being adjacent in section and rear straight pipe is realized and the connection between preceding straight pipe and rear straight pipe；The multi-hole orifice
Outer edge reach outside the outer edge of the ring flange to connect with it, and the through-hole for placing acoustic emission probe be provided with it is more
Hole orifice plate extends on the edge outside ring flange；It is bolted to connection between ring flange and multi-hole orifice.
In step a, the surrounding of each through-hole is provided with two on through-hole diameter extended line on the multi-hole orifice
Aperture, the nylon cable tie by passing through two apertures can realize the fixation to acoustic emission probe in through-hole.
The present invention is that design is optimized on the basis of existing porous balance flow meter, by based on multi-hole orifice
The measurement in a closed series mode that differential pressure measurement is combined with the hydrodynamic noise measurement based on acoustic emission, is solved and is surveyed using sound emission
Measure noise jamming problem when two phase flow.The vibration that pipeline itself can be eliminated or be weakened to detection method in through the invention is made an uproar
The intrinsic noise of the power sources such as sound, water pump air compressor also plays reduction very to the noise source from other positions
To the effect of elimination.Meanwhile the present invention has given full play to multi-hole orifice and acoustic emission in each measurement by rationally designing
Advantage in mode keeps two kinds of measurement means more rationally effective in combination, realizes two based on acoustic emission
Mutually stream quantitative measurment.
The present invention, which realizes porous restriction and combines with acoustic emission, measures two phase flow.Using multi-hole orifice into
The measurement of row two-phase flow not only has the characteristics that good throttle effect, requires upstream and downstream straight pipe low, but also has fine
Noise elimination feature, the interference of other noise sources can be greatly lowered, make transmission signal it is more stable.Two-phase flow is compared to single
Mutually flowing is more complicated, this is related with the distribution situation of two-phase and flow pattern.Two-phase distribution under same phase content
Difference, hydrodynamic characteristic and Heat and Mass Transfer Characteristics also can be different, and in same two-phase flow system two-phase phase interface
Mutually distribution is constantly changed at random with flow process, this makes two-phase flow characteristic more complicated and changeable, therefore two-phase
The flow pattern of stream seriously affects the measurement to two phase flow.Porous balance flow meter in the present invention, in original multi-hole orifice
On the basis of structure, extend the size of orifice plate to achieve the purpose that arrange acoustic emission probe.The sound emission of acquisition flowing acoustical signal
Probe arrangement mode is simple, and the entire structure of the detecting device in conjunction with multi-hole orifice is compact, and acoustic emission probe is to flowing acoustical signal
Detection and the differential pressure measurement of porous balance flow meter do not interfere with each other, since acoustic emission probe position is located at multi-hole orifice
On, therefore the interference of noise can be efficiently reduced, collected flowing acoustical signal has good confidence level, and measurement result is more
It is accurate to add, and such measurement form is more rationally effective.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of porous balance flow meter in the present invention.
Fig. 2 is the structural schematic diagram in Fig. 1 after porous balance flow meter fractionation.
Fig. 3 is the cross-sectional view of Fig. 1.
Fig. 4 is the structural schematic diagram of multi-hole orifice in the present invention.
In figure: 1, preceding straight pipe, 2, rear straight pipe, 3, multi-hole orifice, 4, ring flange, 5, pressure pipe, 6, through-hole, 7, throttling
Hole, 8, bolt hole, 9, aperture.
Specific embodiment
Diphasic stream parameter detection method provided by the present invention based on porous restriction and acoustic emission is dependent on detection
Device (diphasic stream parameter detection device of the full name based on porous restriction and acoustic emission), the detection device include porous flat
Weigh flowmeter, differential pressure transmitter, acoustic emission probe, data acquisition unit and data processing unit.Wherein, porous balance flow meter
Structure it is as shown in FIG. 1 to 3.
Porous balance flow meter in the present invention is made of two straight pipes and a multi-hole orifice, specifically: porous flat
The flowmeter that weighs includes preceding straight pipe 1, rear straight pipe 2 and the multi-hole orifice 3 between preceding straight pipe 1 and rear straight pipe 2.Before
Straight pipe 1 and rear straight pipe 2 are stainless steel straight pipe.Preceding straight pipe 1 is also referred to as upstream straight pipe, and rear straight pipe 2 is also referred to as downstream
Straight pipe.Fluid is from straight pipe 2 after preceding straight pipe 1 flow direction, as shown by the arrows in Figure 3.
The internal diameter of preceding straight pipe 1 and rear straight pipe 2 is D, and the diameter of multi-hole orifice 3 is greater than preceding straight pipe 1 and rear straight tube
The diameter of section 2.The center of multi-hole orifice 3 is on the axial line of preceding straight pipe 1 and rear straight pipe 2.In the present invention, in preceding straight tube
The both ends of section 1 and rear straight pipe 2 are equipped with ring flange 4, the method with 2 end of preceding straight pipe 1 and rear straight pipe respectively of multi-hole orifice 3
Blue disk 4 fits closely, and is bolted to connection between multi-hole orifice 3 and ring flange 4.The outer edge of multi-hole orifice 3 stretches out
To outside the outer edge of the ring flange 4 adjacent thereto connect, i.e., the diameter of multi-hole orifice 3 be greater than ring flange 4 outer diameter.In ring flange
Bolt hole is opened on 4, while being opened on multi-hole orifice 3 with the one-to-one bolt hole of bolt hole on ring flange 48 (see Fig. 4 institute
Show), by that can realize being fastenedly connected multi-hole orifice 3 and ring flange 4 across the bolt of bolt hole.Bolt hole is generally uniform
Positioned at 3 center of multi-hole orifice (or 4 center of ring flange) be the center of circle circle on.
As shown in figure 4, position opposite with preceding straight pipe 1 and 2 lumen of rear straight pipe on multi-hole orifice 3 offer it is several
Throttle orifice 7, fluid enter from preceding straight pipe 1, after flowing by the throttle orifice 7 on multi-hole orifice 3 in straight pipe 2.Throttle orifice 7 is
Throttle orifice with chamfering, specifically: throttle orifice 7 has 45 ° of preceding chamfering and 45 ° of rear chamfering.In the present embodiment, throttle orifice
7 be 13, and size is all the same.Wherein, there are a throttle orifice at the center of multi-hole orifice 3, remaining 12 throttle orifices are divided into
Two groups, one group is 8, and another group is 4, and this two groups of throttle orifices are respectively positioned on the circle centered on multi-hole orifice 3, two groups of sections
Circle where discharge orifice is concentric circles, and the circle where 8 throttle orifices is located at the outside of circle where 4 throttle orifices.
Several through-holes 6, Mei Yitong are circumferentially uniformly provided on the edge that multi-hole orifice 3 extends to outside ring flange 4
It is corresponding in hole 6 to place an acoustic emission probe, flowing sound letter when can detect fluid through multi-hole orifice 3 by acoustic emission probe
Number.Two apertures 9 on through-hole diameter extended line are provided in the surrounding of each through-hole 6, by the Buddhist nun for passing through two apertures 9
Imperial band can realize the fixation to acoustic emission probe in through-hole 6.Acoustic emission probe connects with data acquisition unit, and data acquisition is single
Member can acquire the flowing acoustical signal for the fluid that acoustic emission probe is detected, and by the flowing acoustical signal of collected fluid send out
It send to data processing unit.
In the present invention, the internal diameter of preceding straight pipe 1 and rear straight pipe 2 is D, the length L of preceding straight pipe 11Meet: L1>=D,
The length L of straight pipe 2 afterwards2Meet: L2≥1.5D.A pressure port is equipped in the side wall of preceding straight pipe 1 and rear straight pipe 2, two
Distance of a pressure port away from multi-hole orifice 3 is D.One pressure pipe 5, pressure pipe 5 and differential pressure are set on each pressure port
Transmitter connects, and differential pressure transmitter is used to detect the differential pressure signal of fluid in preceding straight pipe 1 and rear straight pipe 2.Differential pressure transporting
Device connects with data acquisition unit simultaneously, and data acquisition unit can acquire differential pressure signal detected by differential pressure transmitter, and
The collected differential pressure signal of institute is sent to data processing unit.
Data processing unit handles the flowing acoustical signal and differential pressure signal of the two phase flow received, operation,
To obtain the flow and phase content of two phase flow.
Diphasic stream parameter detection method provided by the present invention based on porous restriction and acoustic emission, including walk as follows
It is rapid:
A, the diphasic stream parameter detection device based on porous restriction and acoustic emission as described above is built.
B, flow into two phase flow from preceding straight pipe, and after flowing into after the throttle orifice on multi-hole orifice in straight pipe.
C, the differential pressure signal in preceding straight pipe and rear straight pipe is detected by the differential pressure transmitter, meanwhile, by sound emission
The flowing acoustical signal of probe detection fluid.
D, signal detected by data acquisition unit acquisition differential pressure transmitter and acoustic emission probe, and by letter collected
Number it is sent to data processing unit.
E, the data processing unit receives signal transmitted by data acquisition unit, and the stream to the two phase flow received
Dynamic acoustical signal and differential pressure signal handled, operation, to obtain the flow and phase content of two phase flow.
The present invention tests two phase flow by acoustic emission, extracts valuable flowing acoustical signal, and carry out letter
Number feature extraction, identification flow pattern simultaneously calculate gaseous phase volume containing rate, founding mathematical models.Contain rate, knot based on different gaseous phase volumes
The differential pressure signal that porous balance flow meter measures is closed, flow measurement formula is established.Study the two-phase flow device of this model
Measurement method, the reasonability and feasibility of confirmatory measurement device.The foundation of phase content and total flow measurement model is as follows:
By obtaining characteristic spectra to flowing acoustical signal preliminary analysis, and the energy eigenvalue in characteristic spectra can be effectively
Reflect gaseous phase volume β containing rate in two phase flowg.The energy eigenvalue E in characteristic spectra is extracted, gaseous phase volume is obtained containing rate and measures mould
Type (corresponding following formula):
βg=0.44214ln (E+663.0423) -2.87159
Gaseous phase volume β containing rate can be obtained by gaseous phase volume measurement model containing rateg.According to gaseous phase volume β containing rateg, it is easy to it acquires
Liquid phase volume contains rate: βl=1- βg。
According to gaseous phase volume β containing rategAnd collected differential pressure signal, the empirical model of more existing flow measurement,
The measurement model that selection is suitable for the present apparatus optimizes, and can obtain the two-phase flowmeter model based on this detection device, as follows:
Above in formula, WmIt is the total mass flow rate of two phase flow, ε is the inflatable coefficient of two phase flow, and C is efflux coefficient, D
For the internal diameter of preceding straight pipe and rear straight pipe, β is the equivalent diameter ratio of multi-hole orifice, Δ ptpFor two phase flow preceding straight pipe and after
Pressure difference in straight pipe, x are mass gas content rate, and x can be by gaseous phase volume β containing rategObtain (βgMultiplied by ρgIt is mass gas content rate
X), ρgFor the density of gaseous fluid, ρlFor the density of liquid phase fluid.
The calculation formula of the equivalent diameter ratio β of multi-hole orifice is as follows:
In above formula, d is the diameter of throttle orifice, and D is the internal diameter of preceding straight pipe and rear straight pipe, and N is the number of throttle orifice.
The total mass flow rate of two phase flow can be obtained according to two-phase flowmeter model.
The present invention by setting so that the diameter of multi-hole orifice is greater than the diameter of two straight pipes, and in the outer of multi-hole orifice
Cloth sets several acoustic emission probes, is effectively combined porous balance flow meter measurement two phase flow rationally with acoustic emission,
Realize the not separating and measuring of two phase flow.
Acoustic emission detection principle is: the elastic wave propagation of source emission reaches the surface of material inside substance, and causing can be with
The surface displacement detected with acoustic emission sensor, the mechanical oscillation of material are converted to electric signal by these detectors, then again by
Amplification, processing and record.Acoustic Emission Signal Energy mainly from detected material itself, it does not need the excitation of external device,
Non-intrusion measurement thus may be implemented.When two phase flow fluid flows through the porous balance flow meter in the present invention, fluid impact
The acoustical signal that multi-hole orifice generates is received by acoustic emission probe, in data processing unit, is converted to telecommunications through piezoelectric effect
Number, signal characteristic parameter is obtained with nonlinear transportation method, has quantitative relationship containing rate with gaseous phase volume, and then establish
Measurement model of the gaseous phase volume containing rate.The pressure port of porous balance flow meter is connected with differential pressure transmitter, when obtaining fluid and flowing through
Differential pressure signal, two-phase flow is finally established based on continuity equation and Bernoulli equation and gaseous phase volume measurement model containing rate
Mathematical model.Each separate phase flow rate can be obtained containing rate by total flow and gaseous phase volume, to realize the online of diphasic stream parameter
Detection, since acoustic emission probe position is located on multi-hole orifice, can efficiently reduce the interference of noise, so collecting
Flowing acoustical signal have good confidence level, such measurement form more rationally effectively.
Claims (6)
1. a kind of diphasic stream parameter detection method based on porous restriction and acoustic emission, characterized in that include the following steps:
A, the diphasic stream parameter detection device based on porous restriction and acoustic emission is built；
The diphasic stream parameter detection device based on porous restriction and acoustic emission includes porous balance flow meter, differential pressure change
Send device, acoustic emission probe, data acquisition unit and data processing unit；
The porous balance flow meter includes preceding straight pipe, rear straight pipe and setting in the preceding straight pipe and the rear straight tube
Multi-hole orifice between section；The diameter of the multi-hole orifice be greater than two sections of straight tubes diameter, on the multi-hole orifice with two sections
The opposite position of straight tube lumen offers several throttle orifices, stretches out on the edge outside two sections of straight tubes in the multi-hole orifice along circle
It is uniformly provided with several through-holes week；The acoustic emission probe is correspondingly placed in the through-hole at multi-hole orifice edge；Described preceding straight
The side wall of pipeline section and the rear straight pipe is provided with a pressure port, and the differential pressure transmitter connects with two pressure ports；
B, flow into two phase flow from preceding straight pipe, and after flowing into after the throttle orifice on multi-hole orifice in straight pipe；
C, the differential pressure signal in preceding straight pipe and rear straight pipe is detected by the differential pressure transmitter, meanwhile, by acoustic emission probe
Detect the flowing acoustical signal of fluid；
D, data acquisition unit acquires signal detected by differential pressure transmitter and acoustic emission probe, and signal collected is sent out
It send to data processing unit；
E, the data processing unit receives signal transmitted by data acquisition unit, and to the flowing sound of the two phase flow received
Signal and differential pressure signal handled, operation, to obtain the flow and phase content of two phase flow.
2. the diphasic stream parameter detection method according to claim 1 based on porous restriction and acoustic emission, feature
It is that step e is specific as follows:
The data processing unit obtains characteristic spectra according to the flowing acoustical signal of two phase flow, and extracts the energy in characteristic spectra
Gaseous phase volume β containing rate is calculated in combination with following formula according to energy eigenvalue E in characteristic value Eg:
βg=0.44214ln (E+663.0423) -2.87159
The data processing unit is according to gaseous phase volume β containing rateg, in combination with the pressure difference of front and back straight pipe, according to following formula
The quality total flow W of two phase flow is calculatedm:
Above in formula, ε is the inflatable coefficient of two phase flow, and C is efflux coefficient, and D is the internal diameter of preceding straight pipe and rear straight pipe,
β is the equivalent diameter ratio of multi-hole orifice, Δ ptpFor pressure difference of the two phase flow in two straight pipes, x is mass gas content rate, and x can
By gaseous phase volume β containing rategIt obtains, ρgFor the density of gaseous fluid, ρlFor the density of liquid phase fluid；
The calculation formula of the equivalent diameter ratio β of multi-hole orifice is as follows:
In above formula, d is the diameter of throttle orifice, and D is the internal diameter of preceding straight pipe and rear straight pipe, and N is the number of throttle orifice.
3. the diphasic stream parameter detection method according to claim 1 based on porous restriction and acoustic emission, feature
It is that in step a, the internal diameter of preceding straight pipe and rear straight pipe is D, the length L of preceding straight pipe1Meet: L1>=D, rear straight pipe
Length L2Meet: L2≥1.5D；And two distances of the pressure port away from multi-hole orifice are D.
4. the diphasic stream parameter detection method according to claim 1 based on porous restriction and acoustic emission, feature
It is that in step a, the throttle orifice on the multi-hole orifice is evenly distributed on using the center of multi-hole orifice as the one or more in the center of circle
On concentric circles；And each throttle orifice has 45 ° of preceding chamfering and 45 ° of rear chamfering.
5. the diphasic stream parameter detection method according to claim 1 based on porous restriction and acoustic emission, feature
In step a, to be equipped with ring flange at the both ends of preceding straight pipe and rear straight pipe, the multi-hole orifice by preceding straight pipe and
The ring flange being adjacent on straight pipe afterwards is realized and the connection between preceding straight pipe and rear straight pipe；Outside the multi-hole orifice
Edge reaches outside the outer edge of the ring flange to connect with it, and the through-hole for placing acoustic emission probe is provided with porous
Plate extends on the edge outside ring flange；It is bolted to connection between ring flange and multi-hole orifice.
6. the diphasic stream parameter detection method according to claim 1 based on porous restriction and acoustic emission, feature
It is that in step a, the surrounding of each through-hole is provided with two apertures on through-hole diameter extended line on the multi-hole orifice,
Nylon cable tie by passing through two apertures can realize the fixation to acoustic emission probe in through-hole.
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| CN112212926A (en) * | 2020-08-07 | 2021-01-12 | 北京协同创新研究院 | Flow measurement method based on porous throttling and MEMS pressure sensor |
| CN112484796A (en) * | 2020-11-23 | 2021-03-12 | 中国华能集团清洁能源技术研究院有限公司 | Experiment platform and method for calibrating flow of regulating valve by sound wave signal |
| CN112484793A (en) * | 2020-11-23 | 2021-03-12 | 中国华能集团清洁能源技术研究院有限公司 | Monitoring system and monitoring method for throttle orifice of optical fiber sensor |
| CN112484820A (en) * | 2020-11-23 | 2021-03-12 | 中国华能集团清洁能源技术研究院有限公司 | Throttle orifice plate flowmeter calibration platform and method based on sound wave signals |
Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101187660A (en) * | 2006-07-18 | 2008-05-28 | 中国石油天然气集团公司 | Double-slot type porous plate type mixed transportation metering device |
| CN201527286U (en) * | 2009-11-23 | 2010-07-14 | 天津市润泰自动化仪表有限公司 | Porous rectifier type throttling component |
| CN102147385A (en) * | 2011-02-28 | 2011-08-10 | 天津大学 | Multi-phase flow measuring methods based on single-section impedance long-waist internal cone sensor |
| US20110259119A1 (en) * | 2007-07-13 | 2011-10-27 | McCrometer, Inc | Two-phase flow meter |
| CN102305645A (en) * | 2011-07-26 | 2012-01-04 | 河北大学 | Gas-liquid phase flow measurement device |
| US8220267B1 (en) * | 2009-10-01 | 2012-07-17 | Florida Turbine Technologies, Inc. | Process to detect two-phase flow in a conduit |
| CN203349877U (en) * | 2013-04-28 | 2013-12-18 | 张金鹏 | Spindle taper hole plate throttling device used for differential pressure flowmeter |
| JP2014115164A (en) * | 2012-12-07 | 2014-06-26 | Mitsubishi Heavy Ind Ltd | Apparatus, method, and computer program for measuring flow rate of gas-liquid two-phase flow |
| CN104155471A (en) * | 2014-07-10 | 2014-11-19 | 天津大学 | Multiphase flow testing method based on cross-correlation velocity measurement of ultrasonic and electric multiple sensors |
| CN104965026A (en) * | 2015-05-25 | 2015-10-07 | 北京理工大学 | Method for predicating critical instability of brittle material through using energy characteristic value of acoustic emission signal |
| CN105091959A (en) * | 2015-08-11 | 2015-11-25 | 辽宁聚焦科技有限公司 | Focusing hole plate flowmeter and using method thereof |
| CN105547386A (en) * | 2015-12-22 | 2016-05-04 | 河北大学 | Device and method for measuring gas and liquid two-phase flow in horizontal pipeline |
| CN105628108A (en) * | 2015-12-22 | 2016-06-01 | 河北大学 | Device and method for measuring flow of gas-liquid two phase fluids in vertical pipeline |
| CN105890693A (en) * | 2016-06-01 | 2016-08-24 | 河北大学 | Gas-liquid two-phase flow phase holdup and separate phase flow rate detection device and detection method |
| CN105910663A (en) * | 2016-04-06 | 2016-08-31 | 河北大学 | Device and method for measuring flow of gas-liquid two-phase flow |
| CN105973994A (en) * | 2016-06-15 | 2016-09-28 | 河北大学 | Gas-liquid-phase-flow flow-type recognition device and method based on noise measurement |
| CN205691553U (en) * | 2016-06-15 | 2016-11-16 | 河北大学 | Flow pattern of gas-liquid two-phase flow identification device based on noise measurement |
| WO2017166258A1 (en) * | 2016-04-01 | 2017-10-05 | 深圳市樊溪电子有限公司 | Method for metering flow rate of two phases of gas and liquid in wet natural gas |
| CN107831300A (en) * | 2017-10-20 | 2018-03-23 | 广东电网有限责任公司河源供电局 | A kind of transformer insulation oil based on three-dimensional trapezoidal Probabilistic Fuzzy collection deteriorates appraisal procedure |
| CN107843297A (en) * | 2017-10-17 | 2018-03-27 | 西安交通大学 | Low air void biphase gas and liquid flow liquid phase flow on-line measurement device and method based on V cones |
| CN107907105A (en) * | 2017-10-26 | 2018-04-13 | 天津大学 | A kind of measuring method for organic Rankine bottoming cycle organic working medium gas-liquid two-phase flow pattern |
-
2018
- 2018-09-05 CN CN201811031439.5A patent/CN108931270B/en active Active
Patent Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101187660A (en) * | 2006-07-18 | 2008-05-28 | 中国石油天然气集团公司 | Double-slot type porous plate type mixed transportation metering device |
| US20110259119A1 (en) * | 2007-07-13 | 2011-10-27 | McCrometer, Inc | Two-phase flow meter |
| US8220267B1 (en) * | 2009-10-01 | 2012-07-17 | Florida Turbine Technologies, Inc. | Process to detect two-phase flow in a conduit |
| CN201527286U (en) * | 2009-11-23 | 2010-07-14 | 天津市润泰自动化仪表有限公司 | Porous rectifier type throttling component |
| CN102147385A (en) * | 2011-02-28 | 2011-08-10 | 天津大学 | Multi-phase flow measuring methods based on single-section impedance long-waist internal cone sensor |
| CN102305645A (en) * | 2011-07-26 | 2012-01-04 | 河北大学 | Gas-liquid phase flow measurement device |
| JP2014115164A (en) * | 2012-12-07 | 2014-06-26 | Mitsubishi Heavy Ind Ltd | Apparatus, method, and computer program for measuring flow rate of gas-liquid two-phase flow |
| CN203349877U (en) * | 2013-04-28 | 2013-12-18 | 张金鹏 | Spindle taper hole plate throttling device used for differential pressure flowmeter |
| CN104155471A (en) * | 2014-07-10 | 2014-11-19 | 天津大学 | Multiphase flow testing method based on cross-correlation velocity measurement of ultrasonic and electric multiple sensors |
| CN104965026A (en) * | 2015-05-25 | 2015-10-07 | 北京理工大学 | Method for predicating critical instability of brittle material through using energy characteristic value of acoustic emission signal |
| CN105091959A (en) * | 2015-08-11 | 2015-11-25 | 辽宁聚焦科技有限公司 | Focusing hole plate flowmeter and using method thereof |
| CN105547386A (en) * | 2015-12-22 | 2016-05-04 | 河北大学 | Device and method for measuring gas and liquid two-phase flow in horizontal pipeline |
| CN105628108A (en) * | 2015-12-22 | 2016-06-01 | 河北大学 | Device and method for measuring flow of gas-liquid two phase fluids in vertical pipeline |
| WO2017166258A1 (en) * | 2016-04-01 | 2017-10-05 | 深圳市樊溪电子有限公司 | Method for metering flow rate of two phases of gas and liquid in wet natural gas |
| CN105910663A (en) * | 2016-04-06 | 2016-08-31 | 河北大学 | Device and method for measuring flow of gas-liquid two-phase flow |
| CN105890693A (en) * | 2016-06-01 | 2016-08-24 | 河北大学 | Gas-liquid two-phase flow phase holdup and separate phase flow rate detection device and detection method |
| CN105973994A (en) * | 2016-06-15 | 2016-09-28 | 河北大学 | Gas-liquid-phase-flow flow-type recognition device and method based on noise measurement |
| CN205691553U (en) * | 2016-06-15 | 2016-11-16 | 河北大学 | Flow pattern of gas-liquid two-phase flow identification device based on noise measurement |
| CN107843297A (en) * | 2017-10-17 | 2018-03-27 | 西安交通大学 | Low air void biphase gas and liquid flow liquid phase flow on-line measurement device and method based on V cones |
| CN107831300A (en) * | 2017-10-20 | 2018-03-23 | 广东电网有限责任公司河源供电局 | A kind of transformer insulation oil based on three-dimensional trapezoidal Probabilistic Fuzzy collection deteriorates appraisal procedure |
| CN107907105A (en) * | 2017-10-26 | 2018-04-13 | 天津大学 | A kind of measuring method for organic Rankine bottoming cycle organic working medium gas-liquid two-phase flow pattern |
Non-Patent Citations (7)
| Title |
|---|
| LIDE FANG 等: "The Noise Characteristics of Gas-liquid Two Phase Slug Flow in Vertical Pipe", 《2018 IEEE INTERNATIONAL INSTRUMENTATION AND MEASUREMENT TECHNOLOGY CONFERENCE (I2MTC)》 * |
| 于洪仕 等: "多孔孔板流量计流场仿真", 《天津大学学报(自然科学与工程技术版)》 * |
| 周人: "A+K平衡流量计的独特性能和典型应用", 《医药工程设计》 * |
| 张凯 等: "基于CCEＲT与声发射技术的气液固三相流相含率测量", 《北京航空航天大学学报》 * |
| 张垚: "基于声发射技术的气液两相流动噪声特性检测与机理研究", 《中国优秀硕士学位论文全文数据库 基础科学辑》 * |
| 李伟: "基于V型内锥的水平管多相流流量测量研究", 《中国优秀硕士学位论文全文数据库 信息科学辑》 * |
| 程宇: "多孔流量计的数值模拟与设计", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112212926A (en) * | 2020-08-07 | 2021-01-12 | 北京协同创新研究院 | Flow measurement method based on porous throttling and MEMS pressure sensor |
| CN112212926B (en) * | 2020-08-07 | 2022-04-08 | 北京协同创新研究院 | Flow measurement method based on porous throttling and MEMS pressure sensor |
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