CN110220556A - A kind of biphase gas and liquid flow double parameter transient measurement system - Google Patents
A kind of biphase gas and liquid flow double parameter transient measurement system Download PDFInfo
- Publication number
- CN110220556A CN110220556A CN201910557373.1A CN201910557373A CN110220556A CN 110220556 A CN110220556 A CN 110220556A CN 201910557373 A CN201910557373 A CN 201910557373A CN 110220556 A CN110220556 A CN 110220556A
- Authority
- CN
- China
- Prior art keywords
- gas
- liquid
- liquid flow
- inlet leg
- measurement system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 107
- 238000005259 measurement Methods 0.000 title claims abstract description 33
- 230000001052 transient effect Effects 0.000 title claims abstract description 18
- 239000007791 liquid phase Substances 0.000 claims abstract description 31
- 239000012530 fluid Substances 0.000 claims abstract description 18
- 239000011800 void material Substances 0.000 claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 230000002706 hydrostatic effect Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 7
- 239000012071 phase Substances 0.000 description 7
- 239000000523 sample Substances 0.000 description 5
- 230000005514 two-phase flow Effects 0.000 description 5
- 241000521257 Hydrops Species 0.000 description 4
- 206010030113 Oedema Diseases 0.000 description 4
- 238000000691 measurement method Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a kind of biphase gas and liquid flow double parameter transient measurement systems, including inlet leg, gas-liquid separator, outlet stool and computer；The outlet of inlet leg is connected with the entrance of gas-liquid separator, the liquid outlet of gas-liquid separator bottom is connected with outlet stool, the inlet of inlet leg is equipped with the conductivity sensor for detecting biphase gas and liquid flow void fraction in inlet leg, the electromagnetic flowmeter for detecting fluid flow in outlet stool is provided on outlet stool, the bottom of liquid phase is provided with pressure sensor in gas-liquid separator, wherein, the output end of conductivity sensor, the output end of electromagnetic flowmeter and the output end of pressure sensor are connected to a computer, the system is capable of the flow and void fraction of accurate on-line measurement biphase gas and liquid flow.
Description
Technical field
The invention belongs to flow measurement technology fields, are related to a kind of biphase gas and liquid flow double parameter transient measurement system.
Background technique
When burning coal power generation unit needs start and stop or undertakes peak regulation task, boiler can be in high speed variable load operation state,
The water screen system of boiler is often run under the conditions of varying duty, is faced with the uneven problem of biphase gas and liquid flow distribution.In order to keep away
The fluid flow exempted from into parallel transistor branch pipe is very few, makes the tube wall of the branch pipe because not obtaining the cooling of enough multi-fluid
And overheat, need real-time dynamic monitoring parallel transistor flow system flow and void fraction parameter.And in previous experimental study, measurement
Method be not suitable for perhaps the measurement in dynamic process perhaps can resistance outside plus or measurement accuracy it is obviously insufficient.Cause
This, for the phase partitioning rule of biphase gas and liquid flow in accurate control parallel transistor, measurement method needs to meet claimed below: response speed
Degree is fast, and measurement delay is small, and measurement frequency is high；Measurement accuracy is high, high resolution；The detection method pair of flow and void fraction in branch pipe
The hardly additional extra interference of normal flow in system.
According to retrieval, the document of following publication relevant to the application is found, specific disclosure is as follows:
Patent document CN104155327A discloses the measurement method and measuring system of a kind of gassiness viscous crude void fraction, including
The gassiness viscous crude oil sample of certain volume is put into closed container, gas pressure is measured；It is gradually heated up, no longer becomes to gas pressure
Gas pressure and gas temperature are measured when change；After oil temperature and temperature gradually cooling recovery to initial temperature, gas pressure is measured；
According to gas pressure and temperature under three states, the amount of contained gaseous matter in closed container under three kinds of states is calculated；Into
And it acquires gassiness viscous crude void fraction and stablizes microbubble void fraction and phase transformation microbubble void fraction.
Patent document CN205426837U discloses a kind of biphase gas and liquid flow gassiness for on-line measurement biphase gas and liquid flow
Rate measuring system, comprising: at least a pair of of probe, at least a pair of of probe are contacted with biphase gas and liquid flow when in use；And impedance
Measuring unit, the impedance measuring unit are electrically connected at least a pair of of probe；Each spy at least a pair of of probe
Needle includes the conductive body that part other than tip is attached with insulating film.
Patent document CN101178347B discloses a kind of slit venturi throttling set, including sequentially connected entrance,
Contraction section, slot segments, expansion segment and outlet, the contraction section are one section of long and narrow pipeline, and section is in long and narrow rectangle, are cut
Face area is less than the area of section of entrance and exit.The present invention also provides a kind of two-phase flowmeters using such throttling set
System.
Above-mentioned patent can not achieve the on-line measurement of the two phase flow and void fraction of the biphase gas and liquid flow in parallel transistor, and
Larger interference can be generated to flowing in pipe.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, a kind of biphase gas and liquid flow double parameter transient state is provided
Measuring system, which is capable of the flow and void fraction of accurate on-line measurement biphase gas and liquid flow, and will not generate to flowing in pipe
Larger interference.
In order to achieve the above objectives, biphase gas and liquid flow double parameter transient measurement system of the present invention include inlet leg,
Gas-liquid separator, outlet stool and computer；
The outlet of inlet leg is connected with the entrance of gas-liquid separator, the liquid outlet of gas-liquid separator bottom and outlet
Branch pipe is connected, and the inlet of inlet leg is equipped with the biography of the conductivity for detecting biphase gas and liquid flow void fraction in inlet leg
Sensor is provided with the electromagnetic flowmeter for detecting fluid flow in outlet stool, liquid phase in gas-liquid separator on outlet stool
Bottom be provided with pressure sensor, wherein the output end of conductivity sensor, the output end of electromagnetic flowmeter and pressure sensing
The output end of device is connected to a computer.
The output end of the output end of conductivity sensor, the output end of electromagnetic flowmeter and pressure sensor is adopted by data
Truck is connected to a computer.
Regulating valve is provided on outlet stool, wherein what electromagnetic flowmeter and the regulating valve liquid along outlet stool flowed
Direction is sequentially arranged.
The internal diameter of inlet leg is determined according to engineering is practical.
Inlet leg is transparent configuration.
Conductivity sensor is axially disposed on inlet leg.
Gas-liquid separator is hydrostatic column.
The radius of gas-liquid separator is greater than the radius of outlet stool, and the bottom of gas-liquid separator offers pressure port, pressure
Force snesor is connected with the pressure port.
Electromagnetic flowmeter is axially disposed on outlet stool.
The invention has the following advantages:
Biphase gas and liquid flow double parameter transient measurement system of the present invention is when specific operation, the inlet of inlet leg
Conductivity sensor for detecting biphase gas and liquid flow void fraction in inlet leg is installed, is provided on outlet stool for examining
The electromagnetic flowmeter of fluid flow in outlet stool is surveyed, the bottom of liquid phase is provided with pressure sensor in gas-liquid separator, passes through
Conductivity sensor measures the void fraction of biphase gas and liquid flow in inlet leg, detects liquid in outlet stool by electromagnetic flowmeter
Flow, by pressure sensor detect gas-liquid separator in liquid phase bottom static pressure, then by the static pressure calculate gas-liquid
The hydrops amount of liquid phase bottom in separator, is then compensated by the fluid flow that the hydrops amount detects electromagnetic flowmeter,
It is easy to operate, accuracy is higher to obtain the flow of liquid in biphase gas and liquid flow in inlet leg, to inlet leg in parallel transistor
The not interference any outside plus of the normal flow of interior two phase flow, does not generate additional pressure drop in each inlet leg,
Measurement result can accurately reflect the essential laws that two phase flow distributes in guard system in parallel, while fast response time, may be implemented
On-line sampling system.
Detailed description of the invention
Fig. 1 is structure principle chart of the invention；
Fig. 2 is schematic equivalent circuit when conductivity sensor 2 works in the present invention.
Wherein, 1 it is inlet leg, 2 be conductivity sensor, 3 be gas-liquid separator, 4 be pressure sensor, 5 is electromagnetism
Flowmeter, 6 be outlet stool, 7 be data collecting card, 8 be computer, 9 be regulating valve.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
With reference to Fig. 1, biphase gas and liquid flow double parameter transient measurement system of the present invention includes inlet leg 1, gas-liquid point
From device 3, outlet stool 6 and computer 8；The outlet of inlet leg 1 is connected with the entrance of gas-liquid separator 3, gas-liquid separator 3
The liquid outlet of bottom is connected with outlet stool 6, and the inlet of inlet leg 1 is equipped with for detecting gas in inlet leg 1
The conductivity sensor 2 of liquid two-phase void fraction is provided with for detecting fluid flow in outlet stool 6 on outlet stool 6
Electromagnetic flowmeter 5, the bottom of liquid phase is provided with pressure sensor 4 in gas-liquid separator 3, wherein the output of conductivity sensor 2
The output end at end, the output end of electromagnetic flowmeter 5 and pressure sensor 4 is connected with computer 8.
The output end of the output end of conductivity sensor 2, the output end of electromagnetic flowmeter 5 and pressure sensor 4 passes through number
It is connected according to capture card 7 with computer 8；Regulating valve 9 is provided on outlet stool 6, wherein 9 edge of electromagnetic flowmeter 5 and regulating valve
The direction that liquid flows in outlet stool 6 is sequentially arranged.
The internal diameter of inlet leg 1 is determined according to engineering is practical；Inlet leg 1 is transparent configuration；Conductivity sensor 2
It is axially disposed on inlet leg 1.
Gas-liquid separator 3 is hydrostatic column；The radius of gas-liquid separator 3 is greater than the radius of outlet stool 6, and gas-liquid point
Bottom from device 3 offers pressure port, and pressure sensor 4 is connected with the pressure port；Electromagnetic flowmeter 5 is axially disposed at
On outlet stool 6.
Using conductivity sensor 2 measure inlet leg 1 in biphase gas and liquid flow gas volume fraction, gas-liquid two-phase flow through into
The outlet of mouth branch pipe 1, which enters, carries out gas-liquid separation in gas-liquid separator 3, wherein the gas separated is arranged directly up to big
Gas, the liquid that separator comes out then enter electromagnetic flowmeter 5 by the bottom of gas-liquid separator 3, measure liquid by electromagnetic flowmeter 5
The flow of body.
Meanwhile electromagnetic flowmeter 5 measures obtained flow cannot indicate liquid phase flow in branch pipe, to avoid gas-liquid separation
Hydrops in device 3, the present invention be additionally arranged at the bottom pressure sensor 43 liquid side of gas-liquid separator, by monitoring static pressure herein
Variation, can extrapolate the variation of liquid level, and then caused by obtaining because of hydrops in the measured value and inlet leg 1 of electromagnetic flowmeter 5
The deviation of actual flow, the principles and methods are as follows:
Since the measurement of liquid phase flow in inlet leg 1 is surveyed after being collected liquid phase separation using gas-liquid separator 3
Amount measures the liquid phase flow flowed out by gas-liquid separator 3, as liquid phase flow in inlet leg 1.To ensure by gas-liquid separation
The liquid phase flow that device 3 flows out is equal with the liquid phase flow in inlet leg 1, in Steady Experimental, need to only adjust gas-liquid separator 3
The regulating valve 9 in exit, it is ensured that the liquid level stabilizing for the liquid phase collected in gas-liquid separator 3, i.e., it is believed that being flowed by gas-liquid separator 3
Liquid phase flow out is equal with the liquid phase flow of gas-liquid separator 3 is flowed into from inlet leg 1.
But in two phase flow dynamic allocation procedure, since the liquid phase flow in inlet leg 1 is in dynamic changing process,
Therefore cannot ensure that the liquid phase level collected in gas-liquid separator 3 is stablized, i.e., the liquid phase flow flowed out by gas-liquid separator 3 with from
The liquid phase flow that inlet leg 1 flows into gas-liquid separator 3 cannot remain constantly equal, therefore cannot be only according to electromagnetic flowmeter 5
Measure the dynamic change of flow in inlet leg 1.
According to explanation above, the present invention adds pressure-measuring-point in the bottom of gas-liquid separator 3, the pressure and gas-liquid separation
The height of liquid phase is related in device 3, specifically:
ps=ρlghl (1)
Wherein, psFor the pressure that 3 bottom measurement of gas-liquid separator obtains, ρlFor the density of liquid phase in gas-liquid separator 3, hl
For the height of liquid level in gas-liquid separator 3.
It is located at t0Moment is q by the liquid phase flow that inlet leg 1 flows to gas-liquid separator 3in, outflow gas-liquid separator 3 is simultaneously
It is q by the liquid phase flow that electromagnetic flowmeter 5 measuresout；Liquid level in dt time interval at the moment, in gas-liquid separator 3
Dh is changed, then is had
Wherein, A is the cross-sectional area of gas-liquid separator 3.
And according to formula (1), then have
By formula (2) and formula (3) simultaneous, have
During actual measurement, needs with the small time interval of delta t that can be measured in a real process and be somebody's turn to do
The variation delta h of liquid level replaces the variable quantity dh of derivative time interval dt and liquid level in time interval, i.e., in actual experiment process
In, in the Δ t period, it is believed that the liquid phase flow in inlet leg 1 are as follows:
Therefore the mode that monitoring 3 bottom liquid phases pressure of gas-liquid separator can be used, in conjunction with the measurement knot of electromagnetic flowmeter 5
Fruit is handled by formula (5), obtains true Transient liquid phase flow in inlet leg 1.
In addition, the configuration of the present invention is simple, the not resistance piece or power device outside plus, in addition the monitoring of static pressure, makes
The measurement for obtaining liquid phase flow will not generate biggish delay, ensure that the real-time of measurement result.
As shown in Fig. 2, the driving voltage V of conductivity sensor 2excIt is added on fluid system, and fluid system can be disassembled
Be the resistance R for including fluid, when two electrode surfaces and fluid contact because of contact resistance R that polarization phenomena generateS1And RS2, two electricity
Pole surface contacts the electric double layer capacitance C to be formed with fluid1And C2, between electrode fluid as capacitor C caused by dielectricSInstitute's structure
At series-parallel circuit, wherein the resistance R of fluid can be indicated are as follows:
It can be seen from formula (6) when the structure determination of runner, the size and its conductivity of the fluid section resistance R of a length of l
σ is inversely proportional, therefore can establish the relationship between the resistance R of fluid section and fluid phase content.
By above-mentioned measurement method, the present invention measures the corresponding resistance value of each branch pipe under different operating conditions and liquid phase flow, and
1 electric conductivity value of inlet leg in conjunction with obtained in calibration experiment and the relationship under corresponding operating condition between gas phase and liquid phase flow are realized
To the real―time precision measurment of gas-liquid two-phase parameter in inlet leg 1.
Finally, receiving the electric signal that each measuring device pick-up is come, and will count the present invention is based on NI high-frequency data acquisition system
It is changed into digital signal according to the electric signal that 7 pick-up of capture card is come, is transported in computer 8, is acquired finally by Labview data
Program is stored and is converted to digital signal.
Claims (9)
1. a kind of biphase gas and liquid flow double parameter transient measurement system, which is characterized in that including inlet leg (1), gas-liquid separator
(3), outlet stool (6) and computer (8)；
The outlet of inlet leg (1) is connected with the entrance of gas-liquid separator (3), the liquid outlet of gas-liquid separator (3) bottom
It is connected with outlet stool (6), the inlet of inlet leg (1) is equipped with for detecting inlet leg (1) interior biphase gas and liquid flow
The conductivity sensor (2) of void fraction is provided with the electricity for detecting outlet stool (6) interior fluid flow on outlet stool (6)
Magnetic flowmeter (5), the bottom of liquid phase is provided with pressure sensor (4) in gas-liquid separator (3), wherein conductivity sensor (2)
Output end, the output end of electromagnetic flowmeter (5) and the output end of pressure sensor (4) be connected with computer (8).
2. biphase gas and liquid flow double parameter transient measurement system according to claim 1, which is characterized in that conductivity sensor
(2) output end of output end, electromagnetic flowmeter (5) and the output end of pressure sensor (4) pass through data collecting card (7) and meter
Calculation machine (8) is connected.
3. biphase gas and liquid flow double parameter transient measurement system according to claim 1, which is characterized in that outlet stool (6)
On be provided with regulating valve (9), wherein electromagnetic flowmeter (5) and regulating valve (9) are along the direction of the interior liquid flowing of outlet stool (6)
It is sequentially arranged.
4. biphase gas and liquid flow double parameter transient measurement system according to claim 1, which is characterized in that inlet leg (1)
Internal diameter be determined according to engineering is practical.
5. biphase gas and liquid flow double parameter transient measurement system according to claim 1, which is characterized in that inlet leg (1)
For transparent configuration.
6. biphase gas and liquid flow double parameter transient measurement system according to claim 1, which is characterized in that conductivity sensor
(2) it is axially disposed on inlet leg (1).
7. biphase gas and liquid flow double parameter transient measurement system according to claim 1, which is characterized in that gas-liquid separator
It (3) is hydrostatic column.
8. biphase gas and liquid flow double parameter transient measurement system according to claim 1, which is characterized in that gas-liquid separator
(3) radius is greater than the radius of outlet stool (6), and the bottom of gas-liquid separator (3) offers pressure port, pressure sensor
(4) it is connected with the pressure port.
9. biphase gas and liquid flow double parameter transient measurement system according to claim 1, which is characterized in that electromagnetic flowmeter
(5) it is axially disposed on outlet stool (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910557373.1A CN110220556A (en) | 2019-06-25 | 2019-06-25 | A kind of biphase gas and liquid flow double parameter transient measurement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910557373.1A CN110220556A (en) | 2019-06-25 | 2019-06-25 | A kind of biphase gas and liquid flow double parameter transient measurement system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110220556A true CN110220556A (en) | 2019-09-10 |
Family
ID=67814864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910557373.1A Pending CN110220556A (en) | 2019-06-25 | 2019-06-25 | A kind of biphase gas and liquid flow double parameter transient measurement system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110220556A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1963403A (en) * | 2006-11-30 | 2007-05-16 | 天津大学 | Measuring method of gas-liquid two-phase flow based on section measuring and apparatus thereof |
| CN101162165A (en) * | 2007-11-15 | 2008-04-16 | 王微微 | Low gas content gas-liquid two-phase flow measuring apparatus based on capacitance sensor and standard venturi tube |
| CN101178347A (en) * | 2007-11-15 | 2008-05-14 | 天津大学 | Narrow slit Venturi throttling set and gas-liquid two-phase flow measuring system |
| CN105301059A (en) * | 2015-10-28 | 2016-02-03 | 中国石油大学(华东) | Device and method for measuring gas-liquid cyclone liquid-phase standing time distribution |
| CN106352239A (en) * | 2016-10-20 | 2017-01-25 | 江苏大学 | Pump performance test device in gas-liquid two-phase fixed conveying state |
| 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 |
| CN210014804U (en) * | 2019-06-25 | 2020-02-04 | 西安交通大学 | Gas-liquid two-phase flow double-parameter transient measurement system |
-
2019
- 2019-06-25 CN CN201910557373.1A patent/CN110220556A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1963403A (en) * | 2006-11-30 | 2007-05-16 | 天津大学 | Measuring method of gas-liquid two-phase flow based on section measuring and apparatus thereof |
| CN101162165A (en) * | 2007-11-15 | 2008-04-16 | 王微微 | Low gas content gas-liquid two-phase flow measuring apparatus based on capacitance sensor and standard venturi tube |
| CN101178347A (en) * | 2007-11-15 | 2008-05-14 | 天津大学 | Narrow slit Venturi throttling set and gas-liquid two-phase flow measuring system |
| CN105301059A (en) * | 2015-10-28 | 2016-02-03 | 中国石油大学(华东) | Device and method for measuring gas-liquid cyclone liquid-phase standing time distribution |
| CN106352239A (en) * | 2016-10-20 | 2017-01-25 | 江苏大学 | Pump performance test device in gas-liquid two-phase fixed conveying state |
| 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 |
| CN210014804U (en) * | 2019-06-25 | 2020-02-04 | 西安交通大学 | Gas-liquid two-phase flow double-parameter transient measurement system |
Non-Patent Citations (2)
| Title |
|---|
| 万智华;王国平;陈宏振;张宝军;朱蒙生;: "LNG冷箱并联管路气液两相流量均布特性研究", 广东化工, 15 November 2014 (2014-11-15) * |
| 梁志鹏, 卢家才, 王妍芃, 林宗虎: "管内油气两相流流量变化瞬态过程研究", 西安石油学院学报(自然科学版), 26 January 1998 (1998-01-26), pages 1 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Du et al. | Flow pattern and water holdup measurements of vertical upward oil–water two-phase flow in small diameter pipes | |
| Zhai et al. | Cross-correlation velocity measurement of horizontal oil–water two-phase flow by using parallel–wire capacitance probe | |
| Özgü et al. | A capacitance method for measurement of film thickness in two‐phase flow | |
| CN100409004C (en) | System for measuring phase fraction and phase interface in multiphase pipe flow by using monofilament capacitance probe | |
| CN102116754B (en) | Multiphase flow measurement method based on double-section impedance type long waist cone sensor | |
| CN102147385B (en) | Multi-phase flow measuring methods based on single-section impedance long-waist internal cone sensor | |
| CN208223539U (en) | A kind of optical fiber conductance integration probe sensor | |
| Herringe et al. | Detection of instantaneous phase changes in gas-liquid mixtures | |
| CN108252706A (en) | A kind of oil well low yield liquid highly aqueous water two-phase flow measurement method | |
| Hammer et al. | Capacitance transducers for non-intrusive measurement of water in crude oil | |
| Jia et al. | Electrical resistance tomography sensor for highly conductive oil-water two-phase flow measurement | |
| CN107420089B (en) | Emulsion flow measuring method combining conductivity sensor and electromagnetic flowmeter | |
| CN104101730B (en) | Oil-gas two-phase flow liquid plug movement velocity based on capacitance detecting device and length measurement method | |
| Zhai et al. | Complex admittance detection of horizontal oil-water two-phase flows using a capacitance sensor | |
| Ghendour et al. | Review of measurement techniques for void fraction of two-phase flow through annulus | |
| CN207268709U (en) | A kind of array conductance optical fiber integration probe sensor | |
| CN210014804U (en) | Gas-liquid two-phase flow double-parameter transient measurement system | |
| CN110987097B (en) | Method for measuring gas-liquid multiphase flow by using pressure fluctuation | |
| CN107677705A (en) | A kind of nearly horizontal oil-water two-phase flow specific retention measuring method | |
| Huang et al. | Local Void Fractions and Bubble Velocity in Vertical Air‐Water Two‐Phase Flows Measured by Needle‐Contact Capacitance Probe | |
| Zheng et al. | Capacitance probe for water holdup measurement in crude oil-water flows | |
| Bai et al. | A distributed conductance cross-correlation method for measuring low-velocity and high water-cut oil-water flows | |
| CN110220556A (en) | A kind of biphase gas and liquid flow double parameter transient measurement system | |
| Ma et al. | Two simplified methods to determine void fractions for two-phase flow | |
| CN102147384A (en) | Single-cross section impedance type long-waist inner cone sensor and multiphase flow measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |