CN105222986A - A kind of visual liquid-liquid diphasic flow circuit experimental provision - Google Patents
A kind of visual liquid-liquid diphasic flow circuit experimental provision Download PDFInfo
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- CN105222986A CN105222986A CN201510642277.9A CN201510642277A CN105222986A CN 105222986 A CN105222986 A CN 105222986A CN 201510642277 A CN201510642277 A CN 201510642277A CN 105222986 A CN105222986 A CN 105222986A
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Abstract
A kind of visual liquid-liquid diphasic flow circuit experimental provision, is characterized in that: form a closed experiment circuit by fluid reservoir, outlet valve, centrifugal pump, temperature transmitter, pressure unit, loading system, acrylic observation pipeline section, updip pipeline, return-flow system and data acquisition system (DAS); Experimental system designs according to shear stress principle of similarity, meets hydromechanics dynamic feature; Loading system can realize the liquid liquid original state of any water cut; Oil-water two-phase flow is carried out at the observation of the flow performance at horizontal segment, bend pipe and updip pipeline section place and record by transparent acrylic pipe; Collection and the post analysis of experimentation correlation parameter is carried out by the data acquisition system (DAS) of the differential pressure pickup composition at temperature, pressure unit and updip pipeline place.This circuit experimental provision is applicable to flow state and the flow performance analysis and research of liquid-liquid diphasic flow.
Description
Technical field
The present invention is based on circuit experiment frame, and carry out visual inspection to the experimental phenomena of liquid-liquid diphasic flow, flow pattern, in experimentation, the parameter such as temperature, flow, pressure drop carries out the experimental provision of collection analysis.
Background technology
In commercial production of today, the development of nuclear energy, chemical industry, petroleum industry advances the various researchs in polyphasic flow field strongly, wherein the never substantial breakthrough that studies a question of liquid-liquid diphasic flow.In the actual production of petroleum industry, the processes such as the exploitation of crude oil companion water, product oil operation oil top water are all typical liquid-liquid diphasic flows.The flowing law of research two-phase flow and mechanism can reduce the energy consumption in production run, reduce the internal corrosion of pipeline and promote multi-phase mixed delivering, measurement technology.
The research stock of liquid-liquid diphasic flow is in the twentieth century initial stage, and because research means is at that time immature, experimental facilities falls behind, and is only carried out comparatively rough flow state research to liquid-liquid diphasic flow.Until nineteen nineties, due to the liquid liquid mixed problem of petroleum industry Crude Oil exploitation, the western developed country headed by the U.S., Britain, Israel, France has carried out the research work of liquid-liquid diphase rheological characteristics.In recent years, due to the tender budget of China's refined oil top water, cause products pipeline internal corrosion comparatively serious, liquid-liquid diphasic flow is classified as Research Points research by more domestic scholars.
From the research and development process of liquid-liquid diphasic flow, no matter be indoor physical property experiment originally, the experiment of basic flow-pattern observation or the experiment of the numerical simulation in later stage, lack mutual supporting relation each other.The parameter variation range that different materials, caliber, experimental technique draw is large, and measured data varies, and cannot mutually compare.And existing indoor experimental apparatus is all the easy device realizing merely two-phase contact flow, the time of day of liquid-liquid diphase in actual production process in pipeline cannot be simulated.
Therefore, a set of visual liquid-liquid diphase experimental provision possessing data acquisition function of design research and development has positive meaning for liquid-liquid diphasic flow research.
Summary of the invention
The present invention is a kind of visual liquid-liquid diphase experimental provision possessing data acquisition function.
For achieving the above object, the present invention takes following technical scheme:
First a fluid reservoir is set, to realize circuit system experimentation medium circulation and memory function; Fluid reservoir low liquid level place opening connect tank pipeline successively connection outlet operation valve, centrifugal pump, flow control valve, temperature transmitter, flow transmitter, loading system, the transparent bend pipe of acrylic, updip pipeline section, backflow pipeline section after get back to fluid reservoir, form a closed-loop path.Blowoff valve totally two, is separately positioned on bottom loading system and the transparent bend pipe leading portion of acrylic; Open 4 holes at updip pipeline section place, insert sensor, be connected into data gathering system and data acquisition is carried out to the pressure drop in experimentation; 2 cucurbit framves are set in updip pipeline section rear and front end, by the angle pulling rotating shaft to adjust updip pipeline, coordinate the angle of observation pipeline section; Observation device is high definition high-speed camera instrument, and placement location, in acrylic pipe level, to carry out in process two-phase flow state in synchronous recording shooting acrylic pipe in experiment, and data are sent to data collector terminal preserve.Whole experimental provision realizes loop by circuit pipeline, fluid reservoir stores test medium, centrifugal pump provides power, flow regulation valve regulating flow, loading system injects second liquid phase medium, acrylic pipe carries out experimental observation, and flow transmitter, temperature transmitter, pressure difference transmitter, high definition high-speed camera instrument and data gathering system carry out the collection of test figure.
Advantage of the present invention is:
(1) carry out the experiment frame designed according to effective shear stress principle of similitude, be subject to the acting in conjunction in gravity, boundary shear stress, liquid-liquid interface shearing at the liquid-liquid diphase at observation section place, the Dynamic mechanical property in realistic production.
(2) loading system handled easily, after converting, can carry out the experiment under different reservoir quantity operating mode according to similarity criterion.
(3) data gathering system can the parameter directly related with liquid-liquid diphase flow characteristics such as real-time collecting flow velocity, liquid holdup, pressure drop.
(4) bracket adjustment systems according to different updip angle, easily to updip long tube adjustment overhead positions, farthest can decrease angle and changes the workload produced.
(5) except liquid-liquid diphase flowing experiment, the circular track tests such as this device can also carry out washing away, friction reducer performance evaluation, utilization factor is comparatively large, complete function.
(6) test all parts of circuit all detachable, can detect the inside result of pipeline and equipment after dismounting, evaluate the impact on inner wall corrosion in two-phase flow process.
Accompanying drawing explanation
Fig. 1 is plan structure schematic diagram of the present invention.
Fig. 2 is that the present invention faces structural representation.
Fig. 3 is backsight structural representation of the present invention.
Embodiment
Below in conjunction with drawings and Examples, describe the present invention.
Referring to Fig. 1, circuit experimental provision is by fluid reservoir 1, outlet valve 2, centrifugal pump 3, flow control valve 4, temperature transmitter 5, flow transmitter 6, loading system 7, blowoff valve 8, and blowoff valve 9, acrylic bend pipe 10, updip pipeline 11, pressure difference transmitter 12, return-flow system 13 consist of Flange joint successively.The pipe diameter of circuit experimental provision is 50mm, and material is coating steel pipe, acrylic pipe and steel wire corrugated hoses.Device each several part design size and function as follows:
The size of fluid reservoir 1 is diameter is 323.9mm, the cylinder steel drum of height 1200mm.Be back taper bottom fluid reservoir, the thin mouth place of taper arranges blowoff valve, in order to deposit fluid in drainage tank.The circumferential notch of fluid reservoir open top diameter 70mm, recirculatory pipe inserts bottom fluid reservoir from here.
Referring to Fig. 2, store test medium, control liquid tank level and prevent fluid reservoir 1 from spilling accident occurring, carry out process middle outlet valve 2 be in normally open in experiment by outlet valve 2 in fluid reservoir 1, experiment terminates rear outlet valve 2 and is in closed condition; Centrifugal pump 3, flow control valve 4, temperature transmitter 5 and flow transmitter 6 is connected after outlet valve 2, regulate circuit experiment condition down-off by flow control valve 4, and utilize temperature transmitter 5 and flow transmitter 6 pairs of velocity of medium, temperature monitor and data are sent to data acquisition system (DAS).After adjustment flow, enter loading system 7, loading system is made up of a main pipeline and an other adapter road, a block valve is respectively had before and after main pipeline, middle part is provided with fill valve and blowoff valve, device gets rid of certain volume experiments experiment (determining according to reservoir quantity) in main pipeline by blowoff valve, then injects second liquid phase through fill valve, thus realizes the original state of liquid-liquid diphase; Other adapter road is provided with a block valve, and its function is to keep experiment circuit to run under regime flow during annotating, farthest reducing loading system to the impact of experiment condition.
Referring to Fig. 3, after loading system, connect the acrylic bend pipe 10 (angle experimentally needs customization) with certain updip angle, observation and the photorecording of horizontal segment, elbow and updip section place liquid-liquid diphasic flow experimental phenomena can be carried out herein; Be connected with coating steel pipe with flange plate respectively before and after acrylic bend pipe, updip pipeline section 11 be uniformly distributed 4 pressure transducers, be connected with differential pressure pickup, in experimentation, record the pressure change of 4 points, and be sent to data acquisition system (DAS) and carry out post analysis; The angle of updip pipeline section 11 is adjusted by support system 14, support system is made up of 2 cucurbit framves, 2 cucurbit framves are positioned over the rear and front end of updip pipeline section 11 respectively, the two ends of fixed pulley are fixed on cucurbit top of the trellis and pipeline, by the height pulling fixed pulley to adjust pipeline rear and front end, thus realize the adjustment of updip angle.Finally, updip pipeline section 11 exit is connected with return-flow system 13, and test medium is back to fluid reservoir 1, achieves the periodic duty of experiment circuit.The material of reflux line adopts steel wire corrugated hoses, ensure that the toughness of pipeline on the one hand, the change in displacement that the adjustment being convenient on the other hand adapt to updip pipeline 11 brings.
As shown in Figure 1, this device before use, should be assembled the acrylic pipeline 10 of angle needed for experiment, adjust the angle of updip pipeline section 11, connect circuit experimental system.Then close blowoff valve 8, fill valve, open other all valves, utilize the liquid level discrepancy in elevation, the test medium in fluid reservoir is flow automatically and is full of circuit.Then centrifugal pump 3 is energized, and makes circuit stable operation a period of time, opens the bypass pipeline section of loading system 7 after stability of flow is constant.Now should close loading system 7 main pipeline place former and later two stop valves of filler, after utilizing blowoff valve 8 to get rid of filling section certain volume test medium (identical with reservoir quantity), inject second liquid phase from filler, close fill valve.Wait a moment, after liquid-liquid diphase complete stability, slowly adjust flux of starting from scratch after turn on pump, to specifying operating condition of test, starts to test.In the flow characteristics of acrylic pipe 10 place erection high-speed camera instrument record liquid-liquid diphasic flow at horizontal tube, bend pipe and updip pipe place, and carry out Treatment Analysis by the operational factor in data acquisition system flow process and flow image.
Claims (7)
1. a visual liquid-liquid diphasic flow circuit experimental provision, is characterized in that: consist of Flange joint successively fluid reservoir 1, outlet valve 2, centrifugal pump 3, flow control valve 4, temperature transmitter 5, flow transmitter 6, loading system 7, blowoff valve 8, blowoff valve 9, acrylic bend pipe 10, updip pipeline 11, pressure difference transmitter 12, return-flow system 13; Material has coating steel pipe, acrylic transparent pipe and wire rubber pipe.
2. a kind of visual liquid-liquid diphasic flow circuit experimental provision as claimed in claim 1, is characterized in that: carry out liquid-liquid diphasic flow at the observation of the flow performance at horizontal segment, bend pipe and updip pipeline section place and record by transparent acrylic pipe 10.
3. a kind of visual liquid-liquid diphasic flow circuit experimental provision as claimed in claim 1, is characterized in that: the data acquisition system (DAS) consisted of the differential pressure pickup 12 at temperature, pressure unit 5,6 and updip pipeline 11 place carries out collection and the post analysis of experimentation correlation parameter.
4. a kind of visual liquid-liquid diphasic flow circuit experimental provision as claimed in claim 1, it is characterized in that: updip pipeline section 11 rear and front end arranges 2 cucurbit frame composition support systems 14, by the angle pulling fixed pulley rotating shaft to adjust updip pipeline, coordinate the angle of observation pipeline section, composition updip experimental section carries out pressure difference data collection.
5. a kind of visual liquid-liquid diphasic flow circuit experimental provision as claimed in claim 1, is characterized in that: the mode that loading system 7 gets rid of test medium and fill valve injection second liquid phase by blowoff valve 8 forms liquid-liquid diphase original state.
6. a kind of visual liquid-liquid diphasic flow circuit experimental provision as claimed in claim 1, is characterized in that: loading system 7 is made up of main pipeline and by-pass line two parts, can ensure the stability of circuit system condition in filling process.
7. a kind of visual liquid-liquid diphasic flow circuit experimental provision as claimed in claim 1, is characterized in that: return-flow system 13 have employed steel wire corrugated hoses, is convenient to coordinate the angle of updip pipeline to change the displacement brought while ensureing toughness.
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| CN201510642277.9A CN105222986B (en) | 2015-10-07 | 2015-10-07 | One kind visualization liquid-liquid diphasic flow circuit experimental provision |
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| CN201510642277.9A CN105222986B (en) | 2015-10-07 | 2015-10-07 | One kind visualization liquid-liquid diphasic flow circuit experimental provision |
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| CN105222986B CN105222986B (en) | 2018-01-12 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106769674A (en) * | 2016-11-25 | 2017-05-31 | 中国石油大学(华东) | A kind of circuit experimental provision for dissolved gas crude oil test |
| CN108562586A (en) * | 2017-12-25 | 2018-09-21 | 西南石油大学 | A kind of pipeline oil-water two-phase flow distributed mutually recognition methods |
| CN108918787A (en) * | 2018-08-17 | 2018-11-30 | 中国石油天然气股份有限公司 | Multi-functional grease two-phase simulated flow experimental provision and method |
| CN110361160A (en) * | 2019-07-17 | 2019-10-22 | 西南石油大学 | A kind of controllable temperature pressure control oil gas water consolidates multiphase conveyance conduit imitative experimental appliance |
| CN110672507A (en) * | 2019-10-14 | 2020-01-10 | 浙江理工大学 | Adjustable oil-water two-phase pipe wall wetting and corrosion measurement experimental device |
| CN110726529A (en) * | 2019-10-17 | 2020-01-24 | 西南石油大学 | Device for carrying out natural gas pipeline suspension cable crossing structure pigging power response experiment |
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| CN106769674A (en) * | 2016-11-25 | 2017-05-31 | 中国石油大学(华东) | A kind of circuit experimental provision for dissolved gas crude oil test |
| CN106769674B (en) * | 2016-11-25 | 2019-02-05 | 中国石油大学(华东) | A kind of circuit experimental provision for dissolved gas crude oil test |
| CN108562586A (en) * | 2017-12-25 | 2018-09-21 | 西南石油大学 | A kind of pipeline oil-water two-phase flow distributed mutually recognition methods |
| CN108918787A (en) * | 2018-08-17 | 2018-11-30 | 中国石油天然气股份有限公司 | Multi-functional grease two-phase simulated flow experimental provision and method |
| CN110361160A (en) * | 2019-07-17 | 2019-10-22 | 西南石油大学 | A kind of controllable temperature pressure control oil gas water consolidates multiphase conveyance conduit imitative experimental appliance |
| CN110361160B (en) * | 2019-07-17 | 2021-04-30 | 西南石油大学 | Controllable temperature control oil-pressing gas-water-solid multiphase conveying pipeline simulation experiment device |
| CN110672507A (en) * | 2019-10-14 | 2020-01-10 | 浙江理工大学 | Adjustable oil-water two-phase pipe wall wetting and corrosion measurement experimental device |
| CN110726529A (en) * | 2019-10-17 | 2020-01-24 | 西南石油大学 | Device for carrying out natural gas pipeline suspension cable crossing structure pigging power response experiment |
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| CN105222986B (en) | 2018-01-12 |
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