CN107626119A - Mass dryness fraction distributor and the methods such as the coaxial two phase flow of spiral-flow type gas-liquid - Google Patents
Mass dryness fraction distributor and the methods such as the coaxial two phase flow of spiral-flow type gas-liquid Download PDFInfo
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- CN107626119A CN107626119A CN201610566157.XA CN201610566157A CN107626119A CN 107626119 A CN107626119 A CN 107626119A CN 201610566157 A CN201610566157 A CN 201610566157A CN 107626119 A CN107626119 A CN 107626119A
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Abstract
The invention discloses mass dryness fraction distributor and methods such as the coaxial two phase flows of spiral-flow type gas-liquid, wherein device include main line and from top to bottom sequentially coaxially formula be arranged on buffering transition pipe inside main pipeline, gas-liquid cyclone separator, biphase gas and liquid flow rectification pipeline section, tube fluid separating device, etc. subchannel.Which kind of flow pattern is the present invention be regardless of gas-liquid two-phase incoming, two-phase incoming can be artificially rectified into along ring-type flow pattern substantially symmetrical about its central axis using cyclone, i.e. along the equally distributed equal thickness liquid film ring of circular wall and the gas column core for concentrating on circular pipe center, then symmetry principle is divided according to circular pipe etc., circular channel is divided into the two phase flow runner of multiple-limb on demand using tube fluid separating device, realizes the purpose of the mass dryness fractions such as each branch distribution.
Description
Technical field
The present invention relates to etc. mass dryness fraction distributor, specifically the mass dryness fraction distributor such as coaxial two phase flow of spiral-flow type gas-liquid
With method.
Background technology
" phase " in the present invention refers to physical property identical each several part in multiphase flow.Wherein gas phase and liquid phase both can be with formula lists
The homogeneous mixture of component substance or multi-component material.Biphase gas and liquid flow distribution oil exploitation and conveying, the energy and
It is widely present in the fields such as power.For System Parameter Design and field apparatus safety, the requirement of controllability, it is desirable to be assigned to
Gas-liquid two-phase fluid in each branch road all has identical gas-liquid mass ratio example, i.e., according to etc. mass dryness fraction principle be allocated.But mesh
In preceding two-phase fluid distribution, because biphase gas and liquid flow volume property, pipe network structure difference and outlet back pressure are different, cause gas-liquid two
Generally existing phenomenon of phase separation during phase partitioning, cause the mass dryness fraction between each branch road that obvious deviation occurs, have impact on scene
Production and transportation load.
At present, both at home and abroad mainly with distribution method include:Container type split-phase combined method, the split-phase combined method of duct type
And symmetric form distribution method.
The principle of container type split-phase combined method is to utilize gravity or cyclone mode by gas-liquid two-phase flow point using tun
From into single phase gas and liquid, then it is allocated and measures by single facies-controlled method, finally the gas-liquid after by distribution
Two-phase fluid is mixed, and realizes the purpose of the mass dryness fractions such as each branch's gas-liquid two-phase distribution.Such as United States Patent (USP) 4688168METHOD
AND APPARATUS FOR DETERMINING MASS FLOW RATE AND QUALITY IN A STEAM LINE are used
Cyclonic separation after single-phase measurement, controls each phase mass flow, realizes the mass dryness fractions such as each branch into single-phase steam and water.Shortcoming
It is initial outlay height, device fabrication and maintenance cost are high, and structural volume is big, field application shortcoming flexibility.And Chinese patent
CN102536182A equally uses bulk container dilatation, reaches etc. dry using the thinking of Gravity Separation gas phase and liquid phase and then recombinant
Degree distribution purpose, its shortcoming is equally bulky with United States Patent (USP), complicated, and whole cost is high, can not be widely popularized.
The principle of the split-phase combined method of duct type is using the reducer tee or four-way being disposed vertically, and utilizes gas-liquid density
Difference separates two-phase fluid by the mode of gravity, is then allocated rear recombinant.Such as United States Patent (USP)
US6250131APPARATUS AND METHOD FOR CONTROLLING AND MEASURING STEAM QUALITY and
US5415195METHOD AND APPARATUS FOR CONTROLLING PHASE SPLITTING AT BRANCH T
PIPE JUNCTIONS, and Chinese patent CN101402004A, CN102536182A are designed using principles above.Its
The split-phase combined method of structure respective container formula is greatly simplified, and trial-production processing charges reduces a lot, and favourable scene is promoted.Shortcoming is to work as
Inlet flow rate and flow velocity increase, when particularly main line is annular flow, because liquid inertia is big, fluid by down-comer when
Wait, liquid phase is difficult completely into down-comer, while is also difficult to be kept completely separate gas phase and liquid phase by gravity and down-comer merely, gas
A large amount of liquid phases are carried in phase pipeline, the mass dryness fraction distribution effects such as have impact on.
Symmetric form distribution method principle is the symmetrical each branch outlet of the port of export in distributor, makes to enter each in theory
The gas-liquid two-phase fluid flow on road is equal, the mass dryness fraction distribution purpose such as realization.Such as United States Patent (USP) US5010910 and
US4505297STEAM DISTRIBUTION MANIFOLD, are based on this thinking.Shortcoming is under different flow patterns, velocity flow profile
Or each bypass flow it is unequal when, although structure is full symmetric, each branch road mass dryness fraction cannot guarantee that complete consistent, influence
Distribution effects.
The content of the invention
It is an object of the invention to provide mass dryness fraction distributor and the methods such as the coaxial two phase flow of spiral-flow type gas-liquid, this distribution
Device can be artificially rectified into two-phase incoming along substantially symmetrical about its central axis using cyclone no matter which kind of flow pattern is gas-liquid two-phase incoming be
Ring-type flow pattern, i.e., along the equally distributed equal thickness liquid film ring of circular wall and the gas column core for concentrating on circular pipe center, so
Divide symmetry principle according to circular pipe etc. afterwards, circular channel is divided into the two-phase of multiple-limb on demand using tube fluid separating device
Runner is flowed, realizes the purpose of the mass dryness fractions such as each branch distribution.
In order to reach above-mentioned purpose, present invention employs following technical scheme, the mass dryness fraction such as coaxial two phase flow of spiral-flow type gas-liquid
Distributor, including main line and sequentially coaxially formula is arranged on buffering transition pipe inside main pipeline, gas-liquid from top to bottom
Cyclone, biphase gas and liquid flow rectification pipeline section, tube fluid separating device, etc. subchannel.
The cyclone is made up of 4-8 piece helical blades, and blade height is less than the entrance diameter of buffering transition pipe
0.6 times, without central shaft, it is fixed in circular pipe.
The tube fluid separating device divides separating device, rotation etc. to divide separating device by 12-24 piece dividing plates for rotation etc.
Grid of composition etc. divides circular flow channel, and the device passes through incoming liquid-driving.
It is described to wait subchannel to be at least second-class subchannel.
In order to reach above-mentioned another object, present invention employs following technical scheme, coaxial two phase flow of spiral-flow type gas-liquid etc.
Mass dryness fraction distribution method, the two-phase fluid flowed into by main line enter buffering transition pipe with a variety of flow patterns, subsequently entered
The spiral-flow type fairing being attached thereto, developed into by biphase gas and liquid flow after spiral-flow type fairing in rectification pipeline section coaxially
Gas-liquid annular flow, that is, be close to the liquid film of the uniform thickness of tube wall and middle gas column core, then keep the two of the flow profile
Mutually stream enters tube fluid separating device, and it is equal subchannel, each several part gas-liquid mixture being separated into the case such as to enter back into
The gas phase flow rate and liquid phase flow of decile are kept, so as to reach the purpose of the mass dryness fractions such as each branch distribution.
Compared to prior art, the invention has the advantages that：
It is of the invention to be the gas column that incoming is uniformly rectified into pipe at the liquid film and center of the uniform wall thickness for being close to tube wall
Two parts, therefore only need to carry out in pipe etc. point to separate, it is possible to the purpose of mass dryness fraction such as realize, reduce separation and distribution is set
It is standby, distribution effects is improved, has saved investment.
The present invention utilizes swirl-flow devices and tube fluid separating device, using the means of eddy flow forced flow, adds gas
The liquid two-phase flow pattern scope of application, stratified flow under low flow velocity, wavy stratified flow patterns are applicable not only to, are applied also under high flow rate
Annular flow and slug flow.
The gas-liquid two-phase fluid that distributor of the present invention and method are applied to various media distributes, for example, air and water, steam
Vapour and water, profit and associated gas, refrigeration working medium etc..
Brief description of the drawings
Fig. 1 is gas-liquid two-phase fluid flow pattern schematic diagram of stratified flow and the annular flow under high speed in horizontal circular pipe；
Fig. 2 is the stratified flow A-A sectional views that Fig. 1 pipeline section is shown；
The cyclone that Fig. 3 is Fig. 1 is artificially rectified into two-phase incoming along ring-type flow pattern Q-Q sectional views substantially symmetrical about its central axis,
I.e. along the equally distributed equal thickness liquid film ring of circular wall and the gas column core for concentrating on circular pipe center.
Fig. 4 is gas-liquid two-phase fluid flow pattern schematic diagram of stratified flow and the annular flow under high speed in vertical circular pipe；
Fig. 5 is the annular flow B-B sectional views that Fig. 4 pipeline section is shown,
The cyclone that Fig. 6 is Fig. 4 is artificially rectified into two-phase incoming along ring-type flow pattern Q-Q sectional views substantially symmetrical about its central axis,
I.e. along the equally distributed equal thickness liquid film ring of circular wall and the gas column core for concentrating on circular pipe center.
Fig. 7 is the schematic diagram for the mass dryness fraction distributors such as the spiral-flow type of three branches of the invention is coaxial；
Fig. 8 is Fig. 7 F-F sectional views；
Fig. 9 is Fig. 7 G-G sectional views；
Figure 10 is Fig. 7 H-H sectional views.
Figure 11 is the schematic diagram for the mass dryness fraction distributors such as the spiral-flow type of four branches of the invention is coaxial；
Figure 12 is Figure 11 I-I sectional views；
Figure 13 is Figure 11 J-J sectional views；
Figure 14 is Figure 11 K-K sectional views；
Figure 15 A are gas-liquid cyclone separator sectional view；
Figure 15 B are helical blade schematic diagram；
Figure 16 be tube fluid separating device, etc. subchannel connect stereogram；
Figure 17 A are tube fluid separating device front view；
Figure 17 B are tube fluid separating device stereogram.
In figure：1st, main line；2nd, transition pipe is buffered；3rd, gas-liquid cyclone separator；4th, biphase gas and liquid flow rectification pipeline section；5th, in pipe
Fluid separation apparatus；The 6th, the subchannel such as.
Embodiment
Detailed description for the present invention and technology contents, coordinate brief description of the drawings it is as follows, but accompanying drawing only provide reference with
Purposes of discussion, not it is used for being any limitation as the present invention.
Embodiment 1：
Fig. 7 is the schematic diagram for the mass dryness fraction distributors such as the spiral-flow type of three branches of the invention is coaxial；Wherein Fig. 8 F-F are to divide
Two phase flow signals cross-sectional view exemplified by laminar flow, Fig. 9 G-G cyclones are rectification along ring-type flow pattern substantially symmetrical about its central axis, figure
10H-H is the cross-sectional view after the tube fluid by taking three branches as an example separates.
As shown in Fig. 7, Fig. 8, Fig. 9, Figure 10, the mass dryness fraction distributors such as spiral-flow type gas-liquid is coaxial, including main line 1, buffering
Transition pipe 2, gas-liquid cyclone separator, tube fluid separating device 5, biphase gas and liquid flow rectification pipeline section 4, etc. subchannel 6.With three branches
Exemplified by mass dryness fraction distributor, due to the complicated components of two-phase fluid, different flow patterns can be presented in pipeline, flowed by main line 1
The two-phase fluid entered enters buffering transition pipe 2 with a variety of flow patterns, subsequently enters the spiral-flow type rectification dress being attached thereto
3 are put, by developing into coaxial gas-liquid annular flow in biphase gas and liquid flow rectification pipeline section 4 after spiral-flow type fairing, that is, is close to pipe
The liquid film of the uniform thickness of wall and middle gas column core, then keep the two phase flow of the flow profile to enter tube fluid and separate dress
Put 5, using tube fluid separating device by branch's number by the uniform gas-liquid two-phase annular flow even partition of artificial rectification into
The equal grade subchannel of branch's number, into the subchannel 6 such as respective, each several part gas-liquid mixture being separated into the case is equal
The gas phase flow rate and liquid phase flow of decile are kept, so as to reach the purpose of the mass dryness fractions such as each branch distribution.
Shown in Figure 15 A, Figure 15 B, the cyclone 3 is made up of 4-8 piece helical blades, and blade height is less than buffering transition conduit
0.6 times of the entrance diameter on road 2, without central shaft, is fixed in circular pipe.
Figure 16, Figure 17 A, shown in Figure 17 B, tube fluid separating device 5 divides separating device, rotation etc. point to separate for rotation etc.
Grid that device is made up of 12-24 piece dividing plates etc. divides circular flow channel, and the device is by incoming liquid-driving, in pipeline internal rotation,
Standard annular flow after rectification is radially further divided into the tiny circulation passage of mass dryness fraction such as respective by 360 degree.Deng subchannel 6
Exactly divide circular channel by needing to distribute fixation for determining of number etc..Grid demarcation strip thickness wall thickness 2mm-5mm, length is pipeline
1-2 times of diameter.When from rotation etc. divide separating device flow out fluid subsequently into follow-up one-to-two, one point three, one point four, one point
5th, one point six of assignment channel, the distribution of mass dryness fraction such as realize more than one point.Tube fluid separating device 5 rotates (liquid-driving rotation
Or additionaling power rotation) device part and meet the mass dryness fraction allocative decision such as what different branches (more than 2-6 branches) required.
Embodiment 2：
Figure 11 is the schematic diagram for the mass dryness fraction distributors such as the spiral-flow type of four branches of the invention is coaxial；Wherein Figure 12 I-I be with
Two phase flow signals cross-sectional view exemplified by stratified flow, Figure 13 J-J cyclones are rectification along ring-type flow pattern substantially symmetrical about its central axis,
Figure 14 K-K are the cross-sectional view after the tube fluid by taking four branches as an example separates.
As shown in Figure 11, Figure 12, Figure 13, Figure 14, the distribution principle of the mass dryness fraction distributor such as four branches and multiple-limb and side
The mass dryness fraction distributors such as method and three branch's spiral-flow type gas-liquids are coaxial are identical, and simply exit passageway number and shape are different, but
Divide symmetry principle according to circular pipe etc., circular channel is divided into the two phase flow of multiple-limb on demand using tube fluid separating device
Runner.
In a word, the present invention uses the means of eddy flow forced flow, adds the flow pattern of gas-liquid two-phase flow scope of application, not only fits
For the stratified flow under low flow velocity, wavy stratified flow patterns, the annular flow and slug flow under high flow rate are applied also for.
Presently preferred embodiments of the present invention is the foregoing is only, is not used to limit the scope of the claims of the present invention, other are with this
The equivalence changes of the patent spirit of invention, it all should all belong to the scope of the claims of the present invention.
Claims (5)
1. the mass dryness fraction distributors such as the coaxial two phase flow of spiral-flow type gas-liquid, it is characterised in that including main line and from top to bottom according to
Secondary coaxial-type is arranged on buffering transition pipe, gas-liquid cyclone separator, biphase gas and liquid flow rectification pipeline section, tube fluid inside main pipeline
Separating device, etc. subchannel.
2. the mass dryness fraction distributors such as the coaxial two phase flow of spiral-flow type gas-liquid according to claim 1, it is characterised in that the rotation
Stream device is made up of 4-8 piece helical blades, and blade height is less than 0.6 times of the entrance diameter of buffering transition pipe, without center
Axle, it is fixed in circular pipe.
3. the mass dryness fraction distributors such as the coaxial two phase flow of spiral-flow type gas-liquid according to claim 1, it is characterised in that the pipe
Interior fluid separation apparatus divides separating device, rotation etc. to divide the grid decile that separating device is made up of 12-24 piece dividing plates for rotation etc.
Circular flow channel, the device pass through incoming liquid-driving.
4. the mass dryness fraction distributors such as the coaxial two phase flow of spiral-flow type gas-liquid according to claim 1, it is characterised in that described etc.
Subchannel is at least second-class subchannel.
5. the mass dryness fraction distribution methods such as the coaxial two phase flow of spiral-flow type gas-liquid, it is characterised in that by main line flow into two-phase fluid with
A variety of flow patterns enter buffering transition pipe, subsequently enter the spiral-flow type fairing being attached thereto, whole by spiral-flow type
Biphase gas and liquid flow develops into coaxial gas-liquid annular flow in rectification pipeline section after stream device, that is, is close to the liquid of the uniform thickness of tube wall
Film and middle gas column core, then keep the two phase flow of the flow profile to enter tube fluid separating device, enter back into decile and lead to
Road, each several part gas-liquid mixture being separated into the case keeps the gas phase flow rate and liquid phase flow of decile, so as to reach
The purpose of the mass dryness fractions such as each branch distribution.
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| CN201610566157.XA CN107626119A (en) | 2016-07-18 | 2016-07-18 | Mass dryness fraction distributor and the methods such as the coaxial two phase flow of spiral-flow type gas-liquid |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610566157.XA CN107626119A (en) | 2016-07-18 | 2016-07-18 | Mass dryness fraction distributor and the methods such as the coaxial two phase flow of spiral-flow type gas-liquid |
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Cited By (3)
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| CN110180220A (en) * | 2018-02-22 | 2019-08-30 | 中国石油化工股份有限公司 | Biphase gas and liquid flow distributes control device and method |
| CN112525383A (en) * | 2020-11-17 | 2021-03-19 | 中国航发四川燃气涡轮研究院 | Gas-liquid two-phase flow gas temperature measuring device |
| CN114441241A (en) * | 2020-10-30 | 2022-05-06 | 中国石油化工股份有限公司 | Equal kinetic energy sampling device and method for oil well produced liquid |
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