CN101782411A - Method for accurately metering oil-water mass flow rate - Google Patents
Method for accurately metering oil-water mass flow rate Download PDFInfo
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- CN101782411A CN101782411A CN200910045515A CN200910045515A CN101782411A CN 101782411 A CN101782411 A CN 101782411A CN 200910045515 A CN200910045515 A CN 200910045515A CN 200910045515 A CN200910045515 A CN 200910045515A CN 101782411 A CN101782411 A CN 101782411A
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Abstract
The invention provides a method for accurately metering oil-water mass flow rate, and relates to measurement of oil-water mass flow rate. The method for accurately metering the oil-water mass flow rate is provided, and a Coriolis mass flowmeter and a cubing meter are provided in the method, wherein the Coriolis mass flowmeter measures total mass flow rate of oil-water two-phase flow mixed solution; and the cubing meter meters the total volume flow rate of the oil-water two-phase flow mixed solution. The method is characterized in that: the metered volume flow rate is transmitted to the Coriolis mass flowmeter; the Coriolis mass flowmeter obtains the average density of the oil-water two-phase flow mixed solution by utilizing the total mass flow rate M mixture and the total volume flow rate V mixture; the volatile water content of the oil-water two-phase flow mixed solution is obtained according to the average density rho mixture of the oil-water two-phase flow mixed solution; and the accurate numerical value of pure oil mass flow rate can be obtained.
Description
Technical field
The present invention relates to oil-water mass flow rate measures.
Background technology
Along with the progress of society and the expansion of commercial production scale, for the requirement of accurate measurement also in further raising.Coriolis mass flowmeters is since last century, late nineteen seventies developed gradually, as most advanced in the world, one of the most accurate flow measurement instrument at present, in industries such as oil, petrochemical industry, chemical industry, pharmacy, papermaking, food and the energy, be widely used in occasions such as the detection of technological process and trade transaction meterings, be subjected to the great attention of domestic and international flow measurement circle and users' welcome already.Coriolis mass flowmeters is compared with other flow instrument and is had many good qualities, and can directly measure mass rate, density, temperature, and precision height, good reproducibility, range ratio are wide; Inner structure is simple, no movable member; That can measure that other flow instrument is difficult to measure contains solid particle liquid; Insensitive to smoothness, insensitive to temperature, pressure, viscosity, the density of detected fluid.
Use the total mass flow rate of coriolis mass flow meter measurement profit two-phase mixed liquor at present, can detect the density of the oil-water mixture that flows through flowmeter simultaneously, calculate the water holdup of mixed liquor thus.Utilize the water holdup of mixed liquor to calculate the single-phase mass rate of profit again.When but two kinds of immiscible fluids of profit flowed in pipeline, its flow mechanism was quite complicated, and in general, the true velocity of every phase is also inequality, the speed when also not corresponding to inlet usually.Because water holdup and water percentage do not wait, and are a kind of nonlinear relationship between water holdup and the water percentage, directly replace moisture content meter point counting phase flow rate to produce than mistake by water holdup.
Summary of the invention
The technical issues that need to address of the present invention provide a kind of method of accurately metering oil-water mass flow rate.
Technical scheme of the present invention adopts coriolis mass flowmeters and cubing instrument (as duplex rotor meter), the total mass flow rate of coriolis mass flow meter measurement oil-water two-phase flow mixed liquor, the total volumetric flow rate of cubing instrument metering oil-water two-phase flow mixed liquor, it is characterized in that the volumetric flow rate that the cubing instrument is recorded adopts pulse or 4～20mA electric current or digital communication mode to send coriolis mass flowmeters to, coriolis mass flowmeters utilizes total mass flow rate M
MixWith total volumetric flow rate V
Mix, obtain the average density of oil-water two-phase flow mixed liquor
Again according to the average density ρ of oil-water two-phase flow mixed liquor
MixObtain the volumetric water content of oil-water two-phase flow mixed liquor
Obtain pure oil quality flow M
OilAccurate numerical value.
The present invention comprehensively uses coriolis mass flowmeters and cubing instrument to carry out the oil-water two-phase flow on-line measurement, the method simple and fast, metering accurately, can avoid prior art with water holdup replace that water percentage produced than mistake.
Embodiment
The present invention adopts coriolis mass flowmeters and duplex rotor meter, the total mass flow rate of coriolis mass flow meter measurement oil-water two-phase flow mixed liquor, the total volumetric flow rate of duplex rotor meter metering oil-water two-phase flow mixed liquor, the volumetric flow rate that duplex rotor meter is recorded adopts pulse or 4～20mA electric current or digital communication mode to send coriolis mass flowmeters to, and coriolis mass flowmeters utilizes total mass flow rate M
MixWith total volumetric flow rate V
Mix, obtain the average density of oil-water two-phase flow mixed liquor
Again according to the average density ρ of oil-water two-phase flow mixed liquor
MixObtain the volumetric water content of oil-water two-phase flow mixed liquor
Press
Obtain pure oil quality flow M
OilAccurate numerical value.
The present invention utilizes mass rate and volumetric flow rate two item numbers according to obtaining water percentage, also mass rate and volumetric flow rate two item numbers can be carried out the calculating of the mass rate and the volumetric flow rate of water percentage, phase-splitting according to all being sent to outer another device as RTU or computing machine.
Claims (2)
1. the method for accurately metering oil-water mass flow rate, adopt coriolis mass flowmeters and cubing instrument, the total mass flow rate of coriolis mass flow meter measurement oil-water two-phase flow mixed liquor, the total volumetric flow rate of cubing instrument metering oil-water two-phase flow mixed liquor, it is characterized in that the volumetric flow rate that the cubing instrument is recorded adopts pulse or 4～20mA electric current or digital communication mode to send coriolis mass flowmeters to, coriolis mass flowmeters utilizes total mass flow rate M
MixWith total volumetric flow rate V
Mix, obtain the average density of oil-water two-phase flow mixed liquor
Again according to the average density ρ of oil-water two-phase flow mixed liquor
MixObtain the volumetric water content of oil-water two-phase flow mixed liquor
Press
Obtain the accurate numerical value of pure oil quality flow.
2. the method for accurately metering oil-water mass flow rate phase-splitting numerical value according to claim 1 is characterized in that the cubing instrument adopts duplex rotor meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910045515A CN101782411A (en) | 2009-01-19 | 2009-01-19 | Method for accurately metering oil-water mass flow rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910045515A CN101782411A (en) | 2009-01-19 | 2009-01-19 | Method for accurately metering oil-water mass flow rate |
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| Publication Number | Publication Date |
|---|---|
| CN101782411A true CN101782411A (en) | 2010-07-21 |
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| CN200910045515A Pending CN101782411A (en) | 2009-01-19 | 2009-01-19 | Method for accurately metering oil-water mass flow rate |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048154A (en) * | 2012-12-24 | 2013-04-17 | 中国北车集团大连机车研究所有限公司 | Engine oil heat exchanger test bed |
| CN108474304A (en) * | 2016-01-06 | 2018-08-31 | 高准公司 | Characterize the fuel combination stream period |
| CN108760569A (en) * | 2018-07-13 | 2018-11-06 | 孙玘凡 | Oil-water mixture density and pure oil flow measuring device and method |
| CN109205131A (en) * | 2018-09-11 | 2019-01-15 | 高江江 | A kind of grease storage tank intelligent metering device and its calculation method |
| WO2021031217A1 (en) * | 2019-08-22 | 2021-02-25 | 无锡洋湃科技有限公司 | Wet gas flow measurement method based on coriolis mass flowmeter, and apparatus therefor |
-
2009
- 2009-01-19 CN CN200910045515A patent/CN101782411A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048154A (en) * | 2012-12-24 | 2013-04-17 | 中国北车集团大连机车研究所有限公司 | Engine oil heat exchanger test bed |
| CN108474304A (en) * | 2016-01-06 | 2018-08-31 | 高准公司 | Characterize the fuel combination stream period |
| CN108474304B (en) * | 2016-01-06 | 2021-07-13 | 高准公司 | Characterizing mixed fuel flow periods |
| CN108760569A (en) * | 2018-07-13 | 2018-11-06 | 孙玘凡 | Oil-water mixture density and pure oil flow measuring device and method |
| CN109205131A (en) * | 2018-09-11 | 2019-01-15 | 高江江 | A kind of grease storage tank intelligent metering device and its calculation method |
| WO2021031217A1 (en) * | 2019-08-22 | 2021-02-25 | 无锡洋湃科技有限公司 | Wet gas flow measurement method based on coriolis mass flowmeter, and apparatus therefor |
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Application publication date: 20100721 |