CN107843308A - A kind of flux of moisture measurement apparatus based on exemption level radioactive source - Google Patents

A kind of flux of moisture measurement apparatus based on exemption level radioactive source Download PDF

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CN107843308A
CN107843308A CN201711397473.XA CN201711397473A CN107843308A CN 107843308 A CN107843308 A CN 107843308A CN 201711397473 A CN201711397473 A CN 201711397473A CN 107843308 A CN107843308 A CN 107843308A
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mrow
msup
mfrac
gas
cylindrical pipe
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徐斌
陈继革
郭朋
李敬阳
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Wuxi Yangbai Technology Co Ltd
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Wuxi Yangbai Technology Co Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
    • G01F1/86—Indirect mass flowmeters, e.g. measuring volume flow and density, temperature or pressure
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
    • G01F1/86—Indirect mass flowmeters, e.g. measuring volume flow and density, temperature or pressure
    • G01F1/88—Indirect mass flowmeters, e.g. measuring volume flow and density, temperature or pressure with differential-pressure measurement to determine the volume flow

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Radiation (AREA)

Abstract

The invention discloses a kind of based on the flux of moisture measurement apparatus for exempting level radioactive source, it is characterized in that, it includes one section of cylindrical pipe (1) and position in the inner and is coaxial therewith the taper throttling element (2) set, the taper throttling element (2) includes the head conical section (22) and tail conical section (23) that bottom surface is set altogether, damp inlet of the wherein described head conical section (22) in face of the cylindrical pipe (1), the inwall of the cylindrical pipe (1) is with limiting an annular space (3) so that moisture passes through between the maximum gauge of taper throttling element (2)；(21), which are provided with, at the maximum gauge of the taper throttling element (2) exempts level radiation source block (4), is positioned such that its gamma ray released can radially break through the annular space (3) and reach positioned at the outside gamma-ray detector (5) of cylindrical pipe (1).The present invention can use and exempt level radioactive source, and this is the revolutionary breakthrough of multiphase flow rate metering apparatus field.

Description

A kind of flux of moisture measurement apparatus based on exemption level radioactive source
Technical field
The invention belongs to flow metering devices field, and in particular to a kind of based on the flux of moisture metering for exempting level radioactive source Device.
Background technology
In oil and gas industry, oil gas well effluent includes the gas-liquid mixture fluid of liquid phase crude oil and gas phase natural gas simultaneously, in the industry Referred to as multiphase flow.Wherein described gas phase includes such as oil gas field gas or any gas not solidifying at normal temperatures, specifically just like Methane, ethane, propane, butane etc.；The liquid phase may include：Oil phase, such as crude oil are molten in itself and during oil extraction Liquid additive of the solution in crude oil, and aqueous phase, such as stratum water, the water during in injection Oil/gas Well and dissolving Other liquid additives in aqueous phase.In practice, oil phase and aqueous phase may be separated, it is also possible to which oil phase is mixed with water It is combined, or emulsify completely.How in the gas-liquid mixture fluid that from Oil/gas Well produces gas is real-time and accurately measured Flow and liquid flow, and how further to measure oil phase, gas phase and the respective flow of aqueous phase three-phase, be oil gas Basic data necessary to hiding management and Optimizing manufacture.When the gas phase mass content in multiphase flow is higher than 80%, commonly referred to as Moisture.In hydrocarbon sub-marine field and shale gas exploitation, production is moisture.
Method that is state-of-the-art in the prior art while measuring the respective mass flow of gas and oil water three-phase in moisture is that gamma is penetrated Line measurement Law, its principle are the total mass flow rates using Venturi measuring moisture, and with dual intensity gamma-ray detector in text The respective phase fraction of gas and oil water three-phase is measured at venturi throat, is then multiplied by respective gas and oil water three-phase each with total mass flow rate Phase fraction, obtain the respective mass flow of gas and oil water three-phase.
Gamma ray has to penetrate through venturi throat diameter, by measure transmitted through throat gamma rays intensity with The ratio of its initial activity, phase fraction is obtained by converting.Certain orifice size than constraint under, the diameter of throat Can also it increase with the increase of bore, when throat diameter increases to certain size, transmitted through the gamma rays ratio very little of throat, Under equal gamma ray receiver accuracy of detection, measurement accuracy can be caused to decline.In order to ensure measurement accuracy, technically Must be solved by the intensity for strengthening gamma-ray source.
According to《On issuing the bulletin of radioactive source scheme of classification》(State Environmental Protection Administration announce 2005 No. 62) Relevant regulations, and health and environment are dived according to radioactive source with reference to the pertinent regulations of International Atomic Energy Agency, China In the extent of injury, radioactive source is divided into following I from high to low, II, III, IV, V class, wherein the lower limit activity value in V classes source is should The exemption activity of kind nucleic：
I class radioactive source is high dangerous matter sources.In the case of not protecting, people can be caused by 1 hour by contacting this kind of source a few minutes It is dead；
II class radioactive source is high-risk source.In the case of not protecting, contact this kind of source a few houres to several days can causing death；
III class radioactive source is dangerous matter sources.In the case of not protecting, contacting this kind of source a few houres can be to artificial into permanent Damage, contact several days to several weeks also can causing death；
IV class radioactive source is low dangerous matter sources.Substantially will not to artificial into permanent damage, but to for a long time, close contact The people of these radioactive sources may cause recoverable provisional damage；
V class radioactive source is extremely low dangerous matter sources.Will not be to artificial into permanent damage.
If generally a radioactive source is less than or equal to the lower limit activity of V class radioactive sources, it is called and exempts level radioactive source.
The gamma-ray source used at present on the gamma ray wet gas meter that industrially uses is Group III and higher The non-exemption level radioactive source of danger classes, for security consideration, the storage of strong radiation source, use and transport administrative by various countries The strict management and control of authorities, this to the flux of moisture measurement apparatus based on gamma ray industrialized production and commercially use cause Huge obstacle.
Therefore, people be intended to all the time can using exempt level radioactive source it is traditional by the strong of strict management and control to replace Radioactive source, because control of the executive authorities of various countries to exempting level radioactive source is all most loose, almost can freely it use.But It is to exempt level radioactive source because its activity is very low, for industrial heavy caliber moisture pipeline, exempts what level radioactive source was released Gamma ray often passes through just very faint and be difficult to accurately detect after venturi throat, causes measurement accuracy to decline.This causes It is almost difficult to be industrially used.
Present invention seek to address that above mentioned problem.
The content of the invention
First aspect present invention provides a kind of flux of moisture measurement apparatus based on exemption level radioactive source, and it includes one section Cylindrical pipe 1 and position in the inner and are coaxial therewith the taper throttling element 2 set, and the taper throttling element 2 includes bottom surface altogether The head conical section 22 and tail conical section 23 of setting, wherein damp inlet of the head conical section 22 in face of the cylindrical pipe 1, The inwall of the cylindrical pipe 1 is with limiting an annular space 3 so that moisture leads between the maximum gauge of taper throttling element 2 Cross；21 are provided with exemption level radiation source block 4 at the maximum gauge of the taper throttling element 2, are positioned such that its releasing Gamma ray can radially break through the annular space 3 and reach gamma-ray detector 5 outside cylindrical pipe 1.
Preferably, described also to include differential pressure measuring installation 6 based on the flux of moisture measurement apparatus for exempting level radioactive source, it has There are two pressure taps, wherein the first pressure tap 61 is located in the side wall of the cylindrical pipe 1 of the upstream of head conical section 22, it Two pressure taps 62 are located at the apex in the tail conical section 23.
Preferably, second pressure tap 62 is penetrated into via the pressure guiding pipe through the axis of the cylindricality throttling element 2 The outside of cylindrical pipe 1 is simultaneously connected on differential pressure measuring installation 6.
Preferably, the exemption level radioactive source is above-mentioned V classes radioactive source, is preferably selected from Ba133.Certainly, other are exempted level and put The source of penetrating can also use.
Preferably, the cone angle of the head conical section 22 is 30-45 °, the conical surface of the head conical section 22 and the tail circular cone It is acute angle or right angle between the conical surface of section 23.
Preferably, the width of the annular space 3 is less than 50mm, for example, 25-50mm.
Preferably, the number for exempting level radiation source block 4 is multiple.They are preferably set in a manner of circumferentially equally distributed.
Second aspect of the present invention also discloses a kind of flux of moisture measurement apparatus based on exemption level radioactive source, and it includes one Section cylindrical pipe 1 and position in the inner and be coaxial therewith set taper throttling element 2, the taper throttling element 2 include altogether bottom The head conical section 22 and tail conical section 23 that face is set, wherein the head conical section 22 enters in face of the moisture of the cylindrical pipe 1 Mouthful, a tapered annular space space 9 is limited between the inwall of the cylindrical pipe 1 and the conical surface of head conical section 22 for moisture Pass through；It is provided with the conical surface of the head conical section 22 and exempts level radiation source block 4, is positioned such that its gamma released Ray can radially break through the tapered annular space space 9 and reach the gamma-ray detector 5 being located at outside cylindrical pipe 1, Wherein it is less than 50mm through the radial width in the tapered annular space 9 at place for the gamma ray.
It is adapted for the flux of moisture measurement apparatus based on exemption level radioactive source with the present invention, the applicant also developed A set of unique algorithm, the algorithm are intended separately applying for a patent.
Beneficial effects of the present invention：
1st, the present invention has abandoned the center throttle type conventional wet air-flow gauge that Venturi tube combines with gamma-ray detector Structure, it is changed to be combined with the periphery throttle type of gamma-ray detector with taper throttling element.Flowed on an equal basis with venturi throat In the case of dynamic sectional area, moisture flows from annular space and flowed compared to from venturi throat, the gamma ray moisture to be transmitted through Distance wants much shorter, therefore can replace the strong radiation source in conventional flow meters using the lower exemption level radioactive source of activity.By In production of the executive authorities of various countries to exemption level radioactive source, transport and using there is no control, so it is wet to greatly facilitate finished product Manufacture, transport, displaying and the application of air-flow gauge.In addition, the flow measurement accuracy and precision of the present invention are also not less than tradition Wet gas meter.
2nd, this outwards Zhou Jieliu of present invention mode, is advantageous to adjust velocity in pipes field distribution, reduces gas-liquid slippage.
3rd, wake turbulence is small, and noise amplitude is low, is advantageous to range extension ratio.
Brief description of the drawings
Fig. 1 is the structural representation based on the flux of moisture measurement apparatus for exempting level radioactive source of the present invention.
Fig. 2 be the present invention it is more broadly on based on exempt level radioactive source flux of moisture measurement apparatus structural representation Figure.
Wherein each reference represents following meanings：
1- cylindrical pipes；2- taper throttling elements；At 21- cylindricality throttling element maximum gauges；22- head conical sections；23- tails are justified Bore section；3- annular spaces；4- exempts level radiation source block；5- gamma-ray detectors；6- differential pressure measuring installations；The pressure taps of 61- first； The pressure taps of 62- second；7- pressure gauges；8- thermometers；The tapered annular space spaces of 9-.
Embodiment
The content that following examples are intended to illustrate invention, rather than the further limit to the scope of the present invention are provided It is fixed.
Embodiment 1
As shown in figure 1, the present invention's includes one section of cylindrical tube based on the flux of moisture measurement apparatus for exempting level radioactive source Road 1 and position in the inner and are coaxial therewith the taper throttling element 2 set, and the taper throttling element 2 includes the head that bottom surface is set altogether Conical section 22 and tail conical section 23 and the two floor space is identical, wherein the head conical section 22 is in face of the cylindrical pipe 1 Damp inlet, a ring is limited between 21 and the inwall of the cylindrical pipe 1 at the maximum gauge of the taper throttling element 2 Gap 3 passes through for moisture；21 are provided with exemption level radioactive source Ba at the maximum gauge of the taper throttling element 2133Material block 4, its activity is less than 25 μ Ci, is positioned such that its gamma ray released can radially break through the annular space 3 and reach position Gamma-ray detector 5 outside cylindrical pipe 1.The outside of the cylindrical pipe 1 is provided with differential pressure measuring installation 6, its With two pressure taps, wherein the first pressure tap 61 is located in the side wall of the cylindrical pipe 1 of the upstream of head conical section 22, its Second pressure tap 62 is located at the apex in the tail conical section 23, and the second pressure tap 62 throttles via through the cylindricality The pressure guiding pipe of the axis of part 2 is penetrated into the outside of cylindrical pipe 1 and is connected on differential pressure measuring installation 6.Surveyed first Pressure mouth upstream can also have thermometer 8, and the first pressure tap is also connected with pressure gauge 7 simultaneously.The bending place of above-mentioned pressure guiding pipe will be away from From first pressure tap at least with a distance from 2D, wherein D is the internal diameter of cylindrical pipe.In the present embodiment, the head conical section 22 cone angle is 30 °, and the conical surface angle of head conical section 22 and tail conical section 23 is 90 °.
Measurement process work is as follows：Moisture flows into from the arrival end of the cylindrical pipe 1, and is being measured its temperature on the way T and pressure P is spent, then the annular space is flowed through under the guiding of the taper throttling element, thus produces throttling action, because throttling is produced Raw pressure differential deltap P is determined by above-mentioned differential pressure measuring installation.At annular space, gas phase quality phase fraction is determined by gamma-ray detector αgas, oil quality phase fraction αoilWith aqueous phase quality phase fraction αwater, wherein αgas+αoil+αwater=1, then using following steps Calculate the respective mass flow of gas and oil water three-phase：
1. the hybrid density of multiphase flow is calculated by below equation：
ρ=ρwater×αwater+ρoil×αoil+ρgas×αgas
2. the total mass flow rate Q of multiphase flow is calculated by following flow rate calculation formulam：
In formula：Qm--- mass flows, kg/h；
K---- coefficients；
Δ P-differential pressure value, kPa；
The hybrid density of ρ --- multiphase flow, kg/m3。
Wherein,
In formula：
β-equivalent diameter ratio, usually 0.35-0.75；
The internal diameter of D--- cylindrical pipes 1, m；
D--- cone throttling element maximum diameters, m；
ε-the compressed coefficient, for liquid, ε=1；For gas,
Wherein k is constant entropy coefficient, general monoatomic gas k=1.67, diatomic gas k=1.40, polyatomic gas k= 1.10-1.29, the k values of some common gases are as follows：Argon gas k=1.67, helium k=1.67, hydrogen k=1.40, nitrogen k= 1.40, oxygen O2k=1.39, carbon monoxide k=1.40, air k=1.40, water vapour k=1.33, carbon dioxide k=1.29, Sulfur dioxide k=1.25, methane=1.30, propane k=1.13；
Wherein τ is pressure ratio P2/P1, P2For taper throttling element downstream pressure, P1For taper throttling element upstream pressure；
Wherein efflux coefficient C can be obtained by flow calibration method and scene, and its exemplary value scope is 0.75~ 0.85, or be calculated according to following empirical equation：
3. the respective mass flow of oil gas water three phase is calculated by below equation：
Qgas=Qm×αgas
Qwater=Qm×αwater
Qoil=Qm×αoil
Each physical quantity in above-mentioned formula uses the International System of Units, is defined by being adapted each other.
Embodiment 2
Structure as shown in Fig. 2 the difference of itself and structure shown in Fig. 1 position that is to exempt level radioactive source in taper throttling element On the conical surface of 2 head conical section 22, it is located proximate to 21 at the maximum gauge of the taper throttling element 2, its arrangement Its gamma ray released is enabled to radially break through the tapered annular space space 9) reach outside cylindrical pipe 1 Gamma-ray detector 5, wherein being less than for the gamma ray through the radial width in the tapered annular space 9 at place 50mm。
Specific mass flow calculation method is identical with embodiment 1.

Claims (9)

  1. It is 1. a kind of based on the flux of moisture measurement apparatus for exempting level radioactive source, it is characterised in that it includes one section of cylindrical pipe (1) and position in the inner and be coaxial therewith set taper throttling element (2), the taper throttling element (2) include altogether bottom surface set Head conical section (22) and tail conical section (23), wherein moisture of the head conical section (22) in face of the cylindrical pipe (1) An annular space (3) is limited between entrance, the inwall of the cylindrical pipe (1) and the maximum gauge of taper throttling element (2) So that moisture passes through；(21), which are provided with, at the maximum gauge of the taper throttling element (2) exempts level radiation source block (4), its cloth The mode of putting enables its gamma ray released to radially break through the annular space (3) and reach and is located at cylindrical pipe (1) outside Gamma-ray detector (5).
  2. It is 2. according to claim 1 based on the flux of moisture measurement apparatus for exempting level radioactive source, it is characterised in that it is also wrapped Differential pressure measuring installation (6) is included, it has two pressure taps, wherein the first pressure tap (61) is located at head conical section (22) upstream Cylindrical pipe (1) side wall on, its second pressure tap (62) be located at the tail conical section (23) apex.
  3. It is 3. according to claim 2 based on the flux of moisture measurement apparatus for exempting level radioactive source, it is characterised in that described the Two pressure taps (62) are penetrated into the cylindrical pipe (1) via the pressure guiding pipe through the axis of the cylindricality throttling element (2) Outside is simultaneously connected on differential pressure measuring installation (6).
  4. It is 4. according to claim 1 based on the flux of moisture measurement apparatus for exempting level radioactive source, it is characterised in that described to slit It is Ba to exempt from grade radioactive source133。
  5. It is 5. according to claim 1 based on the flux of moisture measurement apparatus for exempting level radioactive source, it is characterised in that the head The cone angle of conical section (22) is 30-45 °, Cheng Rui between the conical surface of the head circular cone (22) and the conical surface of the tail conical section (23) Angle.
  6. It is 6. according to claim 1 based on the flux of moisture measurement apparatus for exempting level radioactive source, it is characterised in that to exempt level The number for radiating source block (4) is multiple.
  7. It is 7. according to claim 1 based on the flux of moisture measurement apparatus for exempting level radioactive source, it is characterised in that it is also wrapped Include thermometer (8) and pressure gauge (7).
  8. It is 8. a kind of based on the flux of moisture measurement apparatus for exempting level radioactive source, it is characterised in that it includes one section of cylindrical pipe (1) and position in the inner and be coaxial therewith set taper throttling element (2), the taper throttling element (2) include altogether bottom surface set Head conical section (22) and tail conical section (23), wherein moisture of the head conical section (22) in face of the cylindrical pipe (1) Entrance, a tapered annular space space (9) is limited between the inwall of the cylindrical pipe (1) and the conical surface of head conical section (22) So that moisture passes through；It is provided with the conical surface of the head conical section (22) and exempts level radiation source block (4), is positioned such that Its gamma ray released can radially break through the tapered annular space space (9) and reach positioned at cylindrical pipe (1) outside Gamma-ray detector (5), wherein being less than for the gamma ray through the radial width of the tapered annular space (9) at place 50mm。
  9. 9. a kind of required described in 1 or claim 8 based on the flux of moisture measuring method for exempting level radioactive source, its usage right Measurement apparatus, it is characterised in that make moisture be flowed into from the arrival end of the cylindrical pipe 1, and be measured its temperature T on the way With pressure P, the annular space 3 is then flowed through under the guiding of the taper throttling element, thus produces throttling action, because throttling produces Pressure differential deltap P determined by above-mentioned differential pressure measuring installation 6.In annular space 3 or at the tapered annular space space 9, visited by gamma ray Survey device measure gas phase quality phase fraction αgas, oil quality phase fraction αoilWith aqueous phase quality phase fraction αwater, then using following step It is rapid to calculate the respective mass flow of gas and oil water three-phase：
    1) the hybrid density ρ of multiphase flow is calculated by below equation：
    ρ=ρwater×αwater+ρoil×αoil+ρgas×αgas
    2) the total mass flow rate Q of multiphase flow is calculated by following flow rate calculation formulam：
    <mrow> <msub> <mi>Q</mi> <mi>m</mi> </msub> <mo>=</mo> <mi>k</mi> <mo>&amp;CenterDot;</mo> <msqrt> <mrow> <mi>&amp;Delta;</mi> <mi>P</mi> <mo>&amp;CenterDot;</mo> <mi>&amp;rho;</mi> </mrow> </msqrt> </mrow>
    In formula：Qm--- mass flows, kg/h；
    K---- coefficients；
    Δ P-differential pressure value, kPa；
    The hybrid density of ρ --- multiphase flow, kg/m3.
    Wherein,
    <mrow> <mi>k</mi> <mo>=</mo> <mn>0.126447</mn> <mo>&amp;CenterDot;</mo> <mfrac> <mrow> <mi>C</mi> <mo>&amp;CenterDot;</mo> <mi>&amp;epsiv;</mi> </mrow> <msqrt> <mrow> <mn>1</mn> <mo>-</mo> <msup> <mi>&amp;beta;</mi> <mn>4</mn> </msup> </mrow> </msqrt> </mfrac> <mo>&amp;CenterDot;</mo> <mrow> <mo>(</mo> <msup> <mi>D</mi> <mn>2</mn> </msup> <mo>-</mo> <msup> <mi>d</mi> <mn>2</mn> </msup> <mo>)</mo> </mrow> </mrow>
    <mrow> <mi>&amp;beta;</mi> <mo>=</mo> <mfrac> <msqrt> <mrow> <msup> <mi>D</mi> <mn>2</mn> </msup> <mo>-</mo> <msup> <mi>d</mi> <mn>2</mn> </msup> </mrow> </msqrt> <mi>D</mi> </mfrac> </mrow>
    In formula：
    β-equivalent diameter ratio, usually 0.35-0.75；
    The internal diameter of D--- cylindrical pipes 1, mm；
    D--- cone throttling element maximum diameters, mm；
    ε-the compressed coefficient, for liquid, ε=1；For gas,
    <mrow> <mi>&amp;epsiv;</mi> <mo>=</mo> <msqrt> <mrow> <mfrac> <mrow> <msup> <mi>k&amp;tau;</mi> <mrow> <mn>2</mn> <mo>/</mo> <mi>k</mi> </mrow> </msup> </mrow> <mrow> <mi>k</mi> <mo>-</mo> <mn>1</mn> </mrow> </mfrac> <mfrac> <mrow> <mn>1</mn> <mo>-</mo> <msup> <mi>&amp;beta;</mi> <mn>4</mn> </msup> </mrow> <mrow> <mn>1</mn> <mo>-</mo> <msup> <mi>&amp;beta;</mi> <mn>4</mn> </msup> <msup> <mi>&amp;tau;</mi> <mrow> <mn>2</mn> <mo>/</mo> <mi>k</mi> </mrow> </msup> </mrow> </mfrac> <mfrac> <mrow> <mn>1</mn> <mo>-</mo> <msup> <mi>&amp;tau;</mi> <mfrac> <mrow> <mi>k</mi> <mo>-</mo> <mn>1</mn> </mrow> <mi>k</mi> </mfrac> </msup> </mrow> <mrow> <mn>1</mn> <mo>-</mo> <mi>&amp;tau;</mi> </mrow> </mfrac> </mrow> </msqrt> </mrow>
    Wherein k is constant entropy coefficient, general monoatomic gas k=1.67, diatomic gas k=1.40, polyatomic gas k= 1.10-1.29；
    Wherein τ is pressure ratio P2/P1, P2For taper throttling element downstream pressure, P1For taper throttling element upstream pressure；
    Wherein efflux coefficient C can be obtained by flow calibration method and scene, and its exemplary value scope is 0.75~0.85, or Person is calculated according to following empirical equation：
    <mrow> <mi>C</mi> <mo>=</mo> <mn>1</mn> <mo>-</mo> <mrow> <mo>(</mo> <mn>1</mn> <mo>-</mo> <mfrac> <mn>0.0254</mn> <mrow> <mi>D</mi> <mo>+</mo> <mn>0.0254</mn> </mrow> </mfrac> <mo>)</mo> </mrow> <mi>&amp;beta;</mi> <mo>+</mo> <mrow> <mo>(</mo> <mn>2.5</mn> <mo>-</mo> <mfrac> <mn>0.1638</mn> <mrow> <mi>D</mi> <mo>+</mo> <mn>0.1635</mn> </mrow> </mfrac> <mo>)</mo> </mrow> <msup> <mi>&amp;beta;</mi> <mn>2</mn> </msup> <mo>-</mo> <mrow> <mo>(</mo> <mn>2.15</mn> <mo>-</mo> <mfrac> <mn>0.2313</mn> <mrow> <mi>D</mi> <mo>+</mo> <mn>0.1194</mn> </mrow> </mfrac> <mo>)</mo> </mrow> <msup> <mi>&amp;beta;</mi> <mn>3</mn> </msup> </mrow>
    3) the respective mass flow of oil gas water three phase is calculated by below equation：
    Qgas=Qm×αgas
    Qwater=Qm×αwater
    Qoil=Qm×αoil
    Each physical quantity in above-mentioned formula uses the International System of Units, is defined by being adapted each other.
CN201711397473.XA 2017-12-11 2017-12-21 A kind of flux of moisture measurement apparatus based on exemption level radioactive source Pending CN107843308A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019113741A1 (en) * 2017-12-11 2019-06-20 无锡洋湃科技有限公司 Wet gas flow measurement device based on exempt radioactive source

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2881557Y (en) * 2006-03-09 2007-03-21 于向晖 Conical pipe flowmeter
CN101413817A (en) * 2008-12-05 2009-04-22 天津大学 Double-differential pressure throttle humid gas measuring method
CN101802563A (en) * 2007-07-13 2010-08-11 麦克科罗米特股份有限公司 Two-phase flow meter
CN101881639A (en) * 2010-06-28 2010-11-10 江阴市节流装置厂有限公司 V-cone flow meter and use method thereof
CN102759383A (en) * 2012-06-12 2012-10-31 西安交通大学 Method and device for online measurement of gas-phase flow rate of gas-liquid two-phase flow based on single throttling element
CN103038611A (en) * 2010-06-30 2013-04-10 普拉德研究及开发股份有限公司 A multiphase flowmeter and liquid film measurement method
CN103438931A (en) * 2013-08-26 2013-12-11 中国核动力研究设计院 Integrated moist steam flow dryness measuring device and measuring method
CN103759772A (en) * 2014-01-27 2014-04-30 兰州海默科技股份有限公司 Device and method for metering oil-gas-water three-phase flow in thickened oil in whole range
CN104266702A (en) * 2014-09-11 2015-01-07 西安交通大学 Multiphase wet air flow and phase content online measurement method and device
CN204881716U (en) * 2015-07-13 2015-12-16 成都国光电子仪表有限责任公司 Flowmeter convenient to change pressure tap pressure differential size according to actual flow
CN105181037A (en) * 2015-11-02 2015-12-23 陈惺 Online accurate measuring device and online accurate measuring method for fluid flow
CN105890689A (en) * 2016-05-30 2016-08-24 无锡洋湃科技有限公司 Device and method for measuring mass flow rates of gas phase, oil phase and water phase in moisture
CN106323394A (en) * 2016-10-17 2017-01-11 无锡洋湃科技有限公司 Positive displacement mass flowmeter for multiphase flows
CN106352931A (en) * 2016-10-09 2017-01-25 无锡洋湃科技有限公司 Critical flow nozzle flowmeter for measuring each gas-liquid two-liquid two-phase flow in multiphase flow and measuring method
CN106706047A (en) * 2017-01-10 2017-05-24 海默科技（集团）股份有限公司 Underwater multiphase flowmeter based on Ba133
CN207610739U (en) * 2017-12-11 2018-07-13 无锡洋湃科技有限公司 A kind of flux of moisture measuring device based on exemption grade radioactive source

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2881557Y (en) * 2006-03-09 2007-03-21 于向晖 Conical pipe flowmeter
CN101802563A (en) * 2007-07-13 2010-08-11 麦克科罗米特股份有限公司 Two-phase flow meter
CN101413817A (en) * 2008-12-05 2009-04-22 天津大学 Double-differential pressure throttle humid gas measuring method
CN101881639A (en) * 2010-06-28 2010-11-10 江阴市节流装置厂有限公司 V-cone flow meter and use method thereof
CN103038611A (en) * 2010-06-30 2013-04-10 普拉德研究及开发股份有限公司 A multiphase flowmeter and liquid film measurement method
CN102759383A (en) * 2012-06-12 2012-10-31 西安交通大学 Method and device for online measurement of gas-phase flow rate of gas-liquid two-phase flow based on single throttling element
CN103438931A (en) * 2013-08-26 2013-12-11 中国核动力研究设计院 Integrated moist steam flow dryness measuring device and measuring method
CN103759772A (en) * 2014-01-27 2014-04-30 兰州海默科技股份有限公司 Device and method for metering oil-gas-water three-phase flow in thickened oil in whole range
CN104266702A (en) * 2014-09-11 2015-01-07 西安交通大学 Multiphase wet air flow and phase content online measurement method and device
CN204881716U (en) * 2015-07-13 2015-12-16 成都国光电子仪表有限责任公司 Flowmeter convenient to change pressure tap pressure differential size according to actual flow
CN105181037A (en) * 2015-11-02 2015-12-23 陈惺 Online accurate measuring device and online accurate measuring method for fluid flow
CN105890689A (en) * 2016-05-30 2016-08-24 无锡洋湃科技有限公司 Device and method for measuring mass flow rates of gas phase, oil phase and water phase in moisture
CN106352931A (en) * 2016-10-09 2017-01-25 无锡洋湃科技有限公司 Critical flow nozzle flowmeter for measuring each gas-liquid two-liquid two-phase flow in multiphase flow and measuring method
CN106323394A (en) * 2016-10-17 2017-01-11 无锡洋湃科技有限公司 Positive displacement mass flowmeter for multiphase flows
CN106706047A (en) * 2017-01-10 2017-05-24 海默科技（集团）股份有限公司 Underwater multiphase flowmeter based on Ba133
CN207610739U (en) * 2017-12-11 2018-07-13 无锡洋湃科技有限公司 A kind of flux of moisture measuring device based on exemption grade radioactive source

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
孙淮清等: "《流量测量节流装置设计手册》", pages: 14 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019113741A1 (en) * 2017-12-11 2019-06-20 无锡洋湃科技有限公司 Wet gas flow measurement device based on exempt radioactive source
US11199428B2 (en) 2017-12-11 2021-12-14 Wuxi Sea Pioneers Technologies Co., Ltd Device for measuring flow rate of wet gas based on an exempt radioactive source

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