CN206114026U - Heterogeneous class of mass flow meter of positive displacement type - Google Patents
Heterogeneous class of mass flow meter of positive displacement type Download PDFInfo
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- CN206114026U CN206114026U CN201621129623.XU CN201621129623U CN206114026U CN 206114026 U CN206114026 U CN 206114026U CN 201621129623 U CN201621129623 U CN 201621129623U CN 206114026 U CN206114026 U CN 206114026U
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Abstract
The utility model provides a heterogeneous class of mass flow meter of positive displacement type, it includes following component: rate meter (1) is divided mutually to the gamma ray quality, and it is located heterogeneous class main conveying pipe line (2), divide stream -switching valve (3), heterogeneous class of main conveying pipe line divide into two branch line through it, two complete is located each branch line low reaches with parallelly connected multiphase fluid quality measuring vessel (4) separately, and is equipped with vapour and liquid separator (5) between each branch line and measuring vessel, installs one differential pressure sensor (6) on each measuring vessel, and every differential pressure sensor has one to draw and press the mouth to be located the vessel bottom, and each measuring vessel top has measuring vessel 0 line (7), and the bottom has emission outlet line (8) and emission diverter valve (9), gas outlet duct line and liquid outlet pipeline are at heterogeneous class synthetic main conveying pipe line of measuring vessel foreign exchange, the counter has on dividing stream -switching valve (3) or discharging diverter valve (9) for number of times to measuring vessel evacuation liquid is counted.
Description
Technical field
This utility model belongs to multiphase flow mass flow metering field.Specifically, this utility model is related to a kind of positive discharge capacity
Type multiphase flow mass flowmenter and the measurement side using the respective mass flow of oil, gas and water three-phase in effusion meter measurement multiphase flow
Method.
Background technology
In oil and gas industry, oil gas well effluent is simultaneously comprising liquid phase crude oil and water, the gas-liquid mixture fluid of gas phase natural gas, industry
It is interior to be referred to as multiphase flow.Wherein described gas phase includes such as Oil/gas Well institute's producing natural gas or any gas not coagulated at normal temperatures,
Specifically just like methane, ethane, propane, butane etc.；The liquid phase may include：Oil phase, such as crude oil itself and open in crude oil
Inject in Oil/gas Well in the liquid additive being dissolved in during adopting in crude oil, and water phase, such as stratum water, recovery process
Water and other liquid additives being dissolved in water phase.
A kind of method for being used to measuring the respective flow of gas-liquid two-phase in multiphase flow in prior art is Venturi meter+gal
Horse ray method, its principle is the total flow for utilizing Venturi measuring multiphase flow, and measures gas-liquid two with gamma-ray detector
Mutually respective phase fraction, is then multiplied by the respective phase fraction of gas-liquid two-phase with total flow, obtains the respective flow of gas-liquid two-phase.But
Because venturi is momentum type effusion meter, often flux lower limit is higher for such multi-phase flowmeter, it is impossible to which metering is more low-producing
Oil/gas Well, especially for batch-type multiphase flow off and on for, party's rule can not be suitable for completely, it is impossible to accurately metering
The flow of batch-type multiphase flow.
Oil field user is more desirable to obtain oil, the mass flow of each phase of gas and water in multiphase flow, and also is intended to have different from base
In the measuring equipment and method of the batch-type multiphase flow of venturi multi-phase flowmeter range ratio.
This utility model provides a kind of positive displacement type multiphase flow mass flowmenter.
Utility model content
First aspect of the present utility model provides a kind of positive displacement type multiphase flow mass flowmenter, and it includes following structure
Part：Gamma-ray mass phase fraction meter 1, it is located on multiphase flow conveying Trunk Line 2；
Shunting switching valve 3, the multiphase flow conveys Trunk Line Jing, and it is divided into two take-off lines；
Two full heterogeneous fluid mass measurement containers 4 with parallel connection, are each located on each take-off line downstream, and each
Gas-liquid separator 5 is provided between take-off line and measurement container, a differential pressure pick-up 6 is installed on each measurement container, often
Individual differential pressure pick-up has an impulse mouth to be located at container bottom, and each measurement container top has outlet gas line 7, bottom
With exhaust outlet pipeline 8 and discharge switching valve 9；The outlet gas line and exhaust outlet pipeline converge outside measurement container
Trunk Line is conveyed into multiphase flow；
There is enumerator in the shunting switching valve 3 or discharge switching valve 9, for the number of times to measuring vessel empty liquid
Counted.
Wherein, the gamma-ray mass phase fraction meter includes gamma ray emission device and gamma ray receptor, its cloth
Put mode so that the gamma ray that sends of gamma ray emission device pass through along multiphase flow conveying Trunk Line diametric(al) it is described
Gamma ray receptor, the radioactive source in the gamma ray emission device is dual intensity radioactive source or multipotency radioactive source, such as barium -133/
Ba-133。
Wherein, each other arrangement is identical for the differential pressure pick-up in the multiphase flow mass measurement container of two parallel connections.
Preferably, the gas-liquid separator 5 is that gas-liquid collides segregation apparatuss.Other kinds of gas-liquid can certainly be used
Segregation apparatuss, such as gas-liquid cyclone separator etc..
Second aspect of the present utility model is related to oil, the measurement side of the respective flow of gas and water three-phase in a kind of measurement multiphase flow
Method, it uses the positive displacement type multiphase flow mass flowmenter described in this utility model first aspect, the method to comprise the following steps：
A) multiphase flow is made to flow through the positive displacement type multiphase flow mass flowmenter, wherein in gamma-ray mass phase fraction meter
Place measures quality oil content OMF, quality moisture content WMF and the mass gas content rate GMF of the multiphase flow, and by shunting switching valve
Switching action causes the multiphase flow to advance along a certain take-off line every time, and Jing gas-liquid separator separates are gas phase and liquid
Phase, liquid phase is fallen in a certain measurement container, and gas phase is drained from the outlet gas line of the measurement container；
B) liquid phase is made to accumulate in a certain measurement container, and using in differential pressure pick-up monitoring measurement container
Differential pressure Δ P, when the pressure reduction reach it is a certain setting threshold pressure differential when, start it is corresponding with the measurement container discharge switching valve start
The liquid in the measurement container is emptied, the setting threshold pressure differential corresponding to fixed liquid discharge quality, at the same time, cut by shunting
Change valve and switch over operation so that multiphase flow is advanced along another take-off line, and Jing gas-liquid separator separates are gas phase and liquid phase,
Liquid phase is fallen in another measurement container, and gas phase is drained from the outlet gas line of another measurement container；Cause simultaneously described
Enumerator in shunting switching valve or discharge switching valve increases a counting；
C) repeating said steps b within a period of time, and discharge number of times is calculated with the enumerator, then it is multiplied by each fixation
The liquid quality of discharge, thus obtains the liquid mass flow Q in this timel；
D) according to liquid mass flow QlWith the gas phase quality phase fraction GMF, quality moisture content WMF and quality oil-containing
Rate OMF, calculates multiphase flow total mass flow rate Qm, gas mass flow Qg, oil phase mass flow QoWith water phase mass flow Qw, its
Middle Qm=Ql/ (1-GMF), Qg=Ql* GMF/ (1-GMF), Qw=Qm* WMF, Qo=Qm*OMF。
Advantage of the present utility model is as follows：
1st, this utility model realizes the easy measurement of multiphase flow mass flow.
2nd, this utility model can avoid using Venturi meter, there is provided measurement low yield Oil/gas Well multiphase flow in oil, gas,
The measuring equipment and method of each phase mass flow of water three-phase, is particularly suitable for the measurement of batch-type multiphase flow off and on.
Description of the drawings
Fig. 1 is the schematic diagram of positive displacement type multiphase flow mass flowmenter of the present utility model.
In figure, reference implication is as follows：
1st, gamma-ray mass phase fraction meter；2nd, multiphase flow conveying Trunk Line；3rd, switching valve is shunted；4th, container is measured；5、
Gas-liquid separator；6th, differential pressure pick-up；7th, outlet gas line；8th, exhaust outlet pipeline；9th, switching valve is discharged.
Being for illustration only property of the figures above technology design of the present utility model and technical scheme are illustrated, and not with any side
Formula limits this utility model.
Specific embodiment
Each term definition is given first below, is described then in conjunction with accompanying drawing using positive displacement type quality of the present utility model
Oil, the measuring method of the respective mass flow of gas and water three-phase in effusion meter measurement multiphase flow.
" mass flow " refers to the quality of the fluid flow through in the unit interval, and in SI units system, its dimension can be kg/
s。
" quality phase fraction " refers to the mass percent shared by each phase in multiphase flow, and meets following condition：OMF+WMF+
GMF=1, wherein OMF represent quality oil content, and WMF represents quality moisture content, and GMF represents mass gas content rate.
" gamma-ray mass phase fraction meter " is equipment known in the art, comprising gamma emission device, receptor, computing mould
Block and the combinative structure for showing/exporting, the wherein radioactive source in gamma ray emission device (can release two kinds of energy for dual intensity radioactive source
The gamma ray of amount) or multipotency radioactive source (releasing the gamma ray of three kinds of energy above).When passing through material due to gamma ray
There is quantitative rule between strength retrogression and material density, by gamma ray initial value and through the intensity level after measured object,
And according to the prior pure oil density demarcated, pure water density and pure air tightness, pure oil quality absorptance, pure water mass absorption
Coefficient, pure gas mass-absorption coefficient, it is possible to uniquely determine oil, each phase quality phase fraction of gas and water of tested multiphase flow.Concrete mistake
Journey is as follows, and gamma ray emission device sends gamma ray, and its initial strength is N0, after multiphase flow absorbs, penetrate to Vasco da Gama
Line receiver, detects intensity N after transmissionx, and there is formula therebetween
Nxl=N0l*exp(-μl*X)----(1)
Nxh=N0h*exp(-μh*X)----(2)
Wherein subscript l represents more low-energy gamma ray, and h represents the gamma ray of higher-energy；μ is the line of measured object
Property amount absorptance, X be gamma ray along measured object transmission distance, as pipe diameter D.Wherein linear quality absorbs system
Number μ linear quality absorptance μ again with pure gas phaseg(can separated in advance then demarcation is carried out to pure gas phase obtain), pure oil phase
Linear quality absorptance μoThe linear quality of (can separated in advance then carry out demarcation to pure oil phase obtain) and pure water phase is inhaled
Receive coefficient μwThere is following relation in (can separated in advance then mutually carry out demarcation to pure water obtain)：
μl=OMF* μol+WMF*μwl+GMF*μgl,
μh=OMF* μoh+WMF*μwh+GMF*μgh,
Wherein OMF, WMF and GMF are respectively oil, the linear quality phase fraction of gas and water three-phase, and according to quality phase fraction
, there is following constraint again in definition：
GMF+OMF+WMF=1---- (3)
In above three equation, μgl、μgh、μol、μoh、μwlAnd μwhFor given value, X is pipe diameter, is also given value, Nx
It is measured value, and N0Although theoretically gamma ray " initial strength ", actually generally uses " blank pipe count value " and carrys out generation
For it, i.e., this is considered as into gamma without the transmitted intensity values measured by gamma ray receptor during any heterogeneous fluid in pipeline
Ray " initial strength ", is also given value.Thus, only have tri- unknown numbers of OMF, WMF and GMF in above-mentioned equation, therefore can pass through
The above-mentioned equation of simultaneous solution (1) (2) (3) can again assume that multiphase flow oil, gas and water three-phase are to solve OMF, WMF and GMF
Mixed uniformly, then this linear quality phase fraction is regarded as gross mass phase fraction, and then calculates fuel-displaced, gas and water three-phase each
Quality phase fraction.
Multiphase flow flow through conveying Trunk Line 2 when, by gamma-ray mass phase fraction meter 1 to measure multiphase flow in liquid matter
Amount phase fraction OMF, WMF and GMF, then the multiphase flow flows through the shunting switching valve 3 and the switching by shunting switching valve is moved
Make that the multiphase flow can only be advanced every time along a certain take-off line, and Jing gas-liquid separators 5 are separated into gas phase and liquid phase, liquid
Mutually fall in a certain measurement container 4, gas phase is drained from the outlet gas line 7 of the measurement container；Make the liquid phase a certain at this
Accumulation in measurement container, and monitor pressure differential deltap P in measurement container, wherein differential pressure pick-up using the differential pressure pick-up
One pressure measurement probe is located at container bottom, and another pressure measurement probe is located at container top or (guarantees to be allowed to positioned at container body top
On liquid level).With the accumulation of fluid, the differential pressure of measurement is directly proportional to the liquid quality of accumulation in container, when this
When differential pressure reaches a certain setting threshold pressure differential (i.e. discharge opeing quality threshold), start discharge switching valve 9 corresponding with the measurement container
Start evacuation of liquid, at the same time, shunting switching valve 3 switches over operation so that multiphase flow is advanced along another take-off line, and
Jing gas-liquid separators 5 are separated into gas phase and liquid phase, and liquid phase is fallen into 4 in another measurement container, and gas phase is from another measurement container
Outlet gas line 7 drain；The shunting switching valve or the enumerator in discharge switching valve is caused to increase a counting simultaneously.
Repeating said steps b within a period of time, and discharge number of times is calculated with described counting, then the liquid matter for being multiplied by each fixed discharge
Amount, thus obtains the liquid mass flow Q in this timel.According to liquid mass flow QlWith the gas phase quality phase fraction
GMF, quality moisture content WMF and quality oil content OMF, calculate multiphase flow total mass flow rate Qm, gas mass flow Qg, oil phase matter
Amount flow QoWith water phase mass flow Qw, wherein Qm=Ql/ (1-GMF), Qg=Ql* GMF/ (1-GMF), Qw=Qm* WMF, Qo=
Qm*OMF。
Claims (4)
1. a kind of positive displacement type multiphase flow mass flowmenter, it is characterised in that include with lower member：
Gamma-ray mass phase fraction meter (1), it is located on multiphase flow conveying Trunk Line (2)；
Shunting switching valve (3), the multiphase flow conveys Trunk Line Jing, and it is divided into two take-off lines；
Two full heterogeneous fluids mass measurement container (4) with parallel connection, are each located on each take-off line downstream, and at each point
Gas-liquid separator (5) is provided between by-pass line and measurement container, a differential pressure pick-up (6) is installed on each measurement container,
Each differential pressure pick-up has an impulse mouth to be located at container bottom, and each measurement container top has outlet gas line (7), bottom
Portion has exhaust outlet pipeline (8) and discharge switching valve (9)；The outlet gas line and liquid exit line are in measurement container
Multiphase flow conveying Trunk Line is merged into outward；
There is enumerator in shunting switching valve (3) or discharge switching valve (9), for the number of times to measuring vessel empty liquid
Counted.
2. positive displacement type multiphase flow mass flowmenter according to claim 1, it is characterised in that wherein described gamma ray
Quality phase fraction meter includes gamma ray emission device and gamma ray receptor, is positioned such that gamma ray emission device is sent out
The gamma ray for going out passes through the gamma ray receptor, the gamma ray along multiphase flow conveying Trunk Line diametric(al)
Radioactive source in emitter is dual intensity radioactive source or multipotency radioactive source.
3. positive displacement type multiphase flow mass flowmenter according to claim 1, it is characterised in that the multiphase flow of two parallel connections
Each other arrangement is identical for differential pressure pick-up in mass measurement container.
4. positive displacement type multiphase flow mass flowmenter according to claim 1, it is characterised in that the gas-liquid separator
(5) segregation apparatuss are collided for gas-liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621129623.XU CN206114026U (en) | 2016-10-17 | 2016-10-17 | Heterogeneous class of mass flow meter of positive displacement type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621129623.XU CN206114026U (en) | 2016-10-17 | 2016-10-17 | Heterogeneous class of mass flow meter of positive displacement type |
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| Publication Number | Publication Date |
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| CN206114026U true CN206114026U (en) | 2017-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621129623.XU Active CN206114026U (en) | 2016-10-17 | 2016-10-17 | Heterogeneous class of mass flow meter of positive displacement type |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112146711A (en) * | 2020-08-21 | 2020-12-29 | 宁波方太厨具有限公司 | Device for measuring spraying flow of spraying holes of spraying arm and measuring system |
-
2016
- 2016-10-17 CN CN201621129623.XU patent/CN206114026U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106323394B (en) * | 2016-10-17 | 2023-06-06 | 海默科技（集团）股份有限公司 | Positive displacement multiphase flow mass flowmeter |
| CN112146711A (en) * | 2020-08-21 | 2020-12-29 | 宁波方太厨具有限公司 | Device for measuring spraying flow of spraying holes of spraying arm and measuring system |
| CN112146711B (en) * | 2020-08-21 | 2021-12-17 | 宁波方太厨具有限公司 | Device for measuring spraying flow of spraying holes of spraying arm and measuring system |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201231 Address after: No. 593, zhangsutan, Chengguan District, Lanzhou City, Gansu Province Patentee after: HAIMO TECHNOLOGY (Group) Co.,Ltd. Address before: No. 2148 Yingchun Economic Development Zone, Wuxi City, Jiangsu Province Patentee before: Wuxi Sea Pioneers Technologies Co.,Ltd. |
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| TR01 | Transfer of patent right |