CN205067055U - Visual liquid two -phase flow circuit experimental apparatus - Google Patents

Visual liquid two -phase flow circuit experimental apparatus Download PDF

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Publication number
CN205067055U
CN205067055U CN201520773129.6U CN201520773129U CN205067055U CN 205067055 U CN205067055 U CN 205067055U CN 201520773129 U CN201520773129 U CN 201520773129U CN 205067055 U CN205067055 U CN 205067055U
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China
Prior art keywords
liquid
flow
pipeline
updip
visual
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Expired - Fee Related
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CN201520773129.6U
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Chinese (zh)
Inventor
宋晓琴
熊柯杰
张涛
余东亮
陈妍君
杨月新
黄诗嵬
骆宋洋
李佳佳
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Southwest Petroleum University
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Southwest Petroleum University
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Abstract

The utility model provides a visual liquid two -phase flow circuit experimental apparatus which characterized in that: observe pipeline section, updip pipeline, return -flow system and data acquisition system constitute a closed experiment circuit through liquid storage pot, outlet valve, centrifugal pump, temperature transmitter, pressure transmitter, filling system, ya keli, the experimental system designs according to shear stress principle of similarity, accords with hydrodynamics developments characteristic, the filling system can realize the liquid initial condition of arbitrary water content, carry out oil -water phase through transparent inferior gram force pipe and flow observation and record in the mobile characteristic of horizontal segment, return bend and updip pipeline section department, differential pressure sensor through temperature, pressure transmitter and updip pipeline department constitutes data acquisition system experiment process relevant parameter's collection and later stage analysis. This circuit experimental apparatus is applicable to the flow state of liquid two -phase flow and flows feature analysis research.

Description

A kind of visual liquid-liquid diphasic flow circuit experimental provision
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.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, test medium is stored in fluid reservoir (1), control liquid tank level by outlet valve (2) and prevent fluid reservoir (1) from spilling accident occurring, carry out process middle outlet valve (2) in experiment and be in normally open, experiment terminates rear outlet valve 2 and is in closed condition; Outlet valve (2) connects centrifugal pump (3), flow control valve (4), temperature transmitter (5) and flow transmitter (6) afterwards, regulate circuit experiment condition down-off by flow control valve (4), and utilize temperature transmitter (5) and flow transmitter (6) monitor velocity of medium, temperature 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, and respectively have a block valve before and after main pipeline, middle part is provided with fill valve and blowoff valve.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.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.
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) is 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; Updip pipeline section (11) rear and front end arranges 2 cucurbit framves composition support system (14), by the angle pulling fixed pulley rotating shaft to adjust updip pipeline, coordinates the angle of observation pipeline section, and composition updip experimental section carries out pressure difference data collection.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.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.
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) energising, 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 (5)

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).
2. 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 framves composition support system (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.
3. 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.
4. 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.
5. 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.
CN201520773129.6U 2015-10-07 2015-10-07 Visual liquid two -phase flow circuit experimental apparatus Expired - Fee Related CN205067055U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520773129.6U CN205067055U (en) 2015-10-07 2015-10-07 Visual liquid two -phase flow circuit experimental apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520773129.6U CN205067055U (en) 2015-10-07 2015-10-07 Visual liquid two -phase flow circuit experimental apparatus

Publications (1)

Publication Number Publication Date
CN205067055U true CN205067055U (en) 2016-03-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110201421A (en) * 2019-05-27 2019-09-06 河海大学 A kind of oil-water stratified flow changes limits judgment method to co-continuous circulation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110201421A (en) * 2019-05-27 2019-09-06 河海大学 A kind of oil-water stratified flow changes limits judgment method to co-continuous circulation

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20160302

Termination date: 20161007