CN102489045A - Gas-liquid two-phase self-adaption constant flow distributor - Google Patents

Abstract

The invention discloses a gas-liquid two-phase self-adaption constant flow distributor. The gas-liquid two-phase self-adaption constant flow distributor comprises gas-liquid separation devices and gas-liquid mixers; a distribution branch at the rear of each gas-liquid mixer is provided with a self-adaption constant flow valve; a flow adjustment stop valve is arranged between each mixer and each self-adaption constant flow valve; a dryness flow meter is arranged at the rear of each self-adaption constant flow valve; due to the characteristic of constant flow of the self-adaption constant flow valves, the distributor can assimilate the influence of incoming flow or pressure fluctuation of certain working areas on the resistance characteristic of a system in a wide flow range, and performs self-adaption adjustment according to the designed flow; and the flow and dryness of other distribution branches are not influenced when the flow of certain distribution branches is changed, so the flow can be adjusted quickly.

Description

A kind of gas-liquid two-phase fluid self-adaption constant fluidic distributor

Technical field

The present invention relates to a kind of fluid distributing apparatus, be specifically related to a kind of gas-liquid two-phase fluid self-adaption constant fluidic distributor.

Background technology

At oil, engineering fields such as chemical industry and nuclear energy uses often relate to the assignment problem of gas-liquid two-phase fluid.In the process of distributing; The gas-liquid phase ratio that often need respectively distribute branch road to be consistent; Avoid taking place serious phenomenon of phase separation, guarantee simultaneously when fluctuation takes place for incoming flow or some working regions pressure (this fluctuation is dynamic often, change at random); Can control the flow of each branch road; It is constant basically that the static state that keep to get into each working region is set flow, and when needs are regulated some branch road flow, can realize quick adjustment, and the flow and the mass dryness fraction of other branch roads do not exerted an influence.This control and regulation of mass dryness fraction and constant flow rate such as carries out with regard to needing a kind of device to coming flow distribution.

The at present both at home and abroad main dispensing branch that adopts is at structure and the distributor that is symmetrically distributed in form, as the threeway that liquidates, collection case, spherical tank etc., to guarantee each branch road of two-phase fluid even odds ground entering.But because the phase content and the velocity flow profile of two-phase fluid are very inhomogeneous in distributor, and the also constantly variation along with the variation of flow and phase content of distribution form, thereby the uniformity of distributing is generally relatively poor.In addition, when fluctuation takes place the pressure of incoming flow or some working region, can cause that the Resistance Distribution of system changes, thereby cause the flow of each working region and mass dryness fraction all to change thereupon, the uniformity of distribution worsens more.In order to improve the uniformity that the symmetric form distributor distributes; The scheme that proposes at present mainly contains; Before distributor, strengthen earlier the mixing of multiphase flow or carry out the method for salary distribution that reallocation is handled in rectification, perhaps earlier before distributor hardening constituent separate the single-phase then distribution secondary split-phase type distribution method of mixing etc. again.

One Chinese patent application CN101839395A has proposed a kind of gas-liquid two-phase flow uniform distribution device; Basic principle is through " flow pattern adjustment " the asymmetric flow pattern at the upper reaches to be rectified and improved into thickness of liquid film along circumferential equally distributed ring-type flow pattern earlier; Make the equiprobability of each dispensing branch contact gas-liquid phase of downstream; At the inlet of each dispensing branch critical spray nozzle is installed again; Impel biphase gas and liquid flow in nozzle, to form critical flow, change influence, realize uniform distribution distributing thereby improve working region, downstream pressure parameter.But since will be earlier through the flow pattern adjustment, factors such as the flow of its rectification effect and two phase flow and phase content are relevant, the flow through each distribution branch road of critical spray nozzle must be equal fully simultaneously, otherwise the adjustment of previous flow pattern will lose meaning.And use critical spray nozzle and keep constant flow, need make flow velocity reach critical condition, this certainly will cause the very big pressure loss, therefore big limitations its range of application.In addition, when upstream pressure produced fluctuation, critical spray nozzle just was difficult to guarantee the stable of each branch road two-phase flow.

One Chinese patent application CN100402004A discloses a kind of gas-liquid diphasic fluid distributor; Basic thought is to strengthen being separated of two phase flow earlier to distribute again; Promptly at first separate into gas-liquid two-phase fluid single-phase or approaching single-phase gas and liquid; Gas, liquid distribute respectively more then, mix again in twos more at last, get into each working region through flow control valve.Owing to the distribution that the distribution of two-phase fluid is converted into monophasic fluid, improved the effect of distributing, enlarged the range of application of distributor simultaneously.But since two-phase fluid come out from each branch road dispensing branch after flow to lean on flowmeter and manual adjustments valve regulation; In incoming flow or some working region pressure generation fluctuation, because this pressure oscillation is dynamic often, change at random; Manual modulation valve is difficult to satisfy the adjusting requirement; And when regulating a certain branch road, will produce obviously with mass dryness fraction and disturb the flow of other branch roads, need be between each branch road repeatedly adjusting just can reach satisfied effect, this greatly reduces operating efficiency.U.S. Pat 6250131, US7771522 etc. also adopt similar principles.

In sum, the distributor that arm is symmetrically distributed has been difficult to satisfy present production demand, and the method for salary distribution range of application of enhancing mixed or rectification in advance is narrow, in practical applications, receives very big restriction.And several types of distributors that propose at present; In incoming flow or some working region pressure generation fluctuation, all can not well carry out self adaptation regulates; Thereby cause the flow of each branch road, mass dryness fraction to change thereupon; In addition, each distributes the flow of branch road can not realize quick adjustment according to the actual requirements.

Summary of the invention

Defective and deficiency to prior art; The object of the present invention is to provide a kind of gas-liquid two-phase fluid self-adaption constant fluidic distributor; Distributor of the present invention has guaranteed in the range of flow of broad; Digest and assimilate incoming flow or some working region pressure oscillation influence, also avoided some Flow-rate adjustment of distributing branch road to distribute branch road flow and mass dryness fraction to exert an influence simultaneously, realize the flow quick adjustment other to system head characteristics.

In order to achieve the above object, the present invention adopts following technical scheme:

A kind of gas-liquid two-phase fluid self-adaption constant fluidic distributor comprises gas-liquid separation device and blender 8, on the distribution branch road behind each air and liquid mixer 8, adaptive constant-flow valve 10 is housed.

Between said blender 8 and adaptive constant-flow valve 10, Flow-rate adjustment stop valve 9 is housed.

After said adaptive constant-flow valve 10, mass dryness fraction flowmeter 11 is housed.

Said adaptive constant-flow valve 10 comprises valve body 10b and the coaxial spool 10c of valve body 10b, and guide rod 10h passes spool 10c; Be provided with upper reaches three-legged support 10f at the upper reaches of guide rod 10h, have the screwed hole coaxial in the middle of the three-legged support 10f of the upper reaches with guide rod 10h, and with guide rod 10h through being threaded; Upper reaches three-legged support 10f adopts concentric gap to cooperate with valve body 10b; Be provided with downstream three-legged support 10g in the downstream of guide rod 10h, downstream three-legged support 10g is fixed to valve body 10b internal chamber wall coaxially, and its center has through hole; So that 10h is connected with guide rod; Between said spool 10c and downstream three-legged support 10g, be installed with the high accuracy linear regulation spring 10e that is sleeved on the guide rod 10h, between valve body 10b and spool 10c, be provided with fixedly orifice plate 10d, fixedly orifice plate 10d is fixed on the internal chamber wall of valve body 10b coaxially; At spool 10c outer surface and fixedly form variable orifice A between the upstream face of orifice plate 10d, said adaptive constant-flow valve 10 is connected with the upstream and downstream pipeline through flange 10a.

Said spool 10c centre bore 006 internal diameter is slightly larger than the diameter of guide rod 10h, and spool 10c can be free to slide on guide rod 10h.

Said spool 10c outer surface is a surface of revolution; Its external form bus is by upper reaches flat segments 004, downstream flat segments 001, in positioning boss section 005 under the downstream flat segments 001 and the effective control section between upper reaches flat segments 004 and downstream flat segments 001; Effectively control section is divided into adjacent effective control flat segments 002 of adjacent each other and downstream flat segments 001 and the effective control curved section 003 adjacent with upper reaches flat segments 004 again, and effectively the molded lines equation of control section is:

$\left\{\begin{array}{cc}y=h_0,& x\&Element;(0,b]\\ x=b\&CenterDot;{\left(\frac{D^2-{{4h}_0}^2}{D^2-{4y}^2}\right)}^2\&CenterDot;\frac{{4y}^2-{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="HDA0000115576230000011.png"\; state="\{\{state\}\}">d</figure-callout>}}^2}{{{4h}_0}^2-{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="HDA0000115576230000011.png"\; state="\{\{state\}\}">d</figure-callout>}}^2}\&CenterDot;{\left[\frac{(D^2-4y^2)\&CenterDot;({{4h}_0}^2-d^2)}{({4y}^2-d^2)\&CenterDot;(D^2-4{h_0}^2)}\right]}^{\frac{{2d}^2}{D^2-{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="HDA0000115576230000011.png"\; state="\{\{state\}\}">d</figure-callout>}}^2}},& x\&Element;(b,L)\end{array}\right.$

Parameter: $b=\frac{\mathrm{\&pi;}({h_0}^2-\frac{{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="HDA0000115576230000011.png"\; state="\{\{state\}\}">d</figure-callout>}}^2}{4})\&times;\mathrm{\&Delta;}{P}_1}{k},$ $h_0=\sqrt{{\left(\frac{D}{2}\right)}^2-\frac{Q}{\mathrm{C\&pi;}\sqrt{2\mathrm{\&rho;\; \&Delta;}{\mathrm{<figure-callout\; id="1"\; label="P"\; filenames="HDA0000115576230000011.png"\; state="\{\{state\}\}">P</figure-callout>}}_1}}}$

Above various in: Q is a design discharge; ρ is the two phase flow hybrid density; Δ P ₁Be design initialization pressure reduction; C is a discharge coefficient; D is fixing orifice plate 10d internal diameter; D is a guide rod 10h diameter; K is the coefficient of elasticity of high accuracy linear regulation spring 10e; L is the maximum compressibility of high accuracy linear regulation spring 10e; (0, b] be the interval range of effectively controlling flat segments 002; (b L) is the interval range of effectively controlling curved section 003.

All have the regulating spring positioning boss on said spool 10c and the downstream three-legged support 10g, the two ends of said high accuracy linear regulation spring 10e are installed on the regulating spring positioning boss on spool 10c and the downstream three-legged support 10g.

Said high accuracy linear regulation spring 10e is that high accuracy linear regulation spring parallel connection that one or at least two length differ is sleeved on together and forms.

On each liquid branch road 6, mass dryness fraction control valve 7 is housed.

Said adaptive constant-flow valve 10 can be applied to separately in ground or the underground single-phase or heterogeneous fluid pipe network, realizes that the equilibrium of fluid distributes.

Gas-liquid two-phase fluid self-adaption constant fluidic distributor of the present invention at first makes the gas-liquid two-phase fluid incoming flow be separated; Draw some gas branch roads 5 and liquid branch road 6 from gas collection case 3 and liquid collector 4 again; Carrying out secondary at blender 8 in twos mixes; Pass through Flow-rate adjustment stop valve 9 after the mixing successively, adaptive constant-flow valve 10 gets into each working region with mass dryness fraction flowmeter 11.On each liquid branch road 6, mass dryness fraction control valve 7 is housed, regulates the mass dryness fraction of respectively distributing branch road in conjunction with mass dryness fraction flowmeter 11.Distribute the Flow-rate adjustment stop valve 9 on the branch road not only can distribute the incipient stage to carry out the initial coarse adjusting, and can guarantee stopping some working region flow supply or changing and close these branch roads when some distributes branch road adaptive constant-flow valve at two phase flow according to design flow value convection current amount.The variation of self two ends pressure reduction that adaptive constant-flow valve 10 can cause according to incoming flow or some working region pressure oscillation; Its spool 10c makes automatically and moves axially the circulation area that changes fluid accordingly; Thereby change the resistance coefficient of self; The system that makes respectively distributes branch road resistance autobalance, and control respectively distributes the branch road flow to make its maintenance constant effectively, respectively distributes the mass dryness fraction of branch road also to keep stable simultaneously.Because the constant-current characteristics of adaptive constant-flow valve 10 when changing certain flow that distributes branch road, is distributed the flow of branch road can not exert an influence to other, thereby can be realized the flow quick adjustment.This distributor has just guaranteed in the range of flow of broad like this; Digest and assimilate incoming flow or some working region pressure oscillation influence, also avoided some Flow-rate adjustment of distributing branch road to distribute branch road flow and mass dryness fraction to exert an influence simultaneously other to system head characteristics.

The present invention compared with prior art has the following advantages:

1. can overcome upper reaches incoming flow or the pressure oscillation of working region, downstream influence, guarantee to give each working region, the requirement of dispenser arrangement mode and installation environment is reduced greatly by setting assignment of traffic to distribution effects.

2. in the course of the work, the application of adaptive constant-flow valve does not need manual adjustment, can come that the flow that distributes branch road is carried out self adaptation according to pressure oscillation and regulate, and has good self-stabilization ability, has reduced working strength, has improved working environment.

3. range of application is wide, both has been applicable to that the interregional equilibrium of heterogeneity distributes, and is applicable to the situation of respectively distributing the branch road design discharge to differ in size again.

4. simple in structure; Easy to operate, when needs change certain regional injection flow, the fixedly orifice plate in the adaptive constant-flow valve of this branch road of needs replacing; Spool or regulating spring and the valve of this branch road regulated; And need not change the structural parameters of other branch roads of system, the phase mutual interference when having avoided each branch road Flow-rate adjustment, the quick adjustment that has realized distributing the branch road flow.

5. can regulate automatically in the course of work each gas-liquid phase ratio of distributing a way outlet and the gas-liquid of being responsible for incoming flow mutually ratio be consistent the adjusting of mass dryness fractions such as realization.

Description of drawings

Fig. 1 is a structure schematic side view of the present invention.

Fig. 2 is the structural profile front view of adaptive constant-flow valve.

Fig. 3 is the left view of adaptive constant-flow valve.

Fig. 4 is the structural representation of spool.

Fig. 5 is a two phase flow distribution system schematic flow sheet.

The specific embodiment

Below in conjunction with accompanying drawing and specific embodiment the present invention is described further.

As shown in Figure 1; Gas-liquid two-phase fluid self-adaption constant fluidic distributor of the present invention; Comprise the gas-liquid separator 2 that incoming flow trunk line 1 and incoming flow trunk line 1 are connected, the upper end of gas-liquid separator 2 and gas collection case 3 are connected; Lower end and liquid collector 4 are connected; Gas collection case 3 is connected with blender 8 through gas branch road 5 and liquid branch road 6 respectively with liquid collector 4, on the liquid branch road 6 between liquid collector 4 and the blender 8, is provided with mass dryness fraction control valve 7, and Flow-rate adjustment stop valve 9, adaptive constant-flow valve 10 and mass dryness fraction flowmeter 11 are housed on the distribution branch road behind the air and liquid mixer 8 successively.

As shown in Figures 2 and 3, adaptive constant-flow valve 10 comprises valve body 10b and the coaxial spool 10c of valve body 10b; Guide rod 10h passes spool 10c, is provided with upper reaches three-legged support 10f at the upper reaches of guide rod 10h, has the screwed hole coaxial with guide rod 10h in the middle of the three-legged support 10f of the upper reaches; And with guide rod 10h through being threaded; Upper reaches three-legged support 10f adopts concentric gap to cooperate with valve body 10b, is provided with downstream three-legged support 10g in the downstream of guide rod 10h, and downstream three-legged support 10g is fixed to valve body 10b internal chamber wall coaxially; Its center has through hole; So that 10h is connected with guide rod, all have the regulating spring positioning boss on spool 10c and the downstream three-legged support 10g, high accuracy linear regulation spring 10e two ends are installed on the positioning boss of spool 10c and downstream three-legged support 10g successively; Between valve body 10b and spool 10c, be provided with fixedly orifice plate 10d; Fixedly orifice plate 10d is fixed on the internal chamber wall of valve body 10b coaxially, and at spool 10c outer surface and fixedly form variable orifice A between the upstream face of orifice plate 10d, slidably spool 10c and high accuracy linear regulation spring 10e are big or small according to the circulation area that the pressure reduction at upstream and downstream two ends changes variable orifice A automatically; Keep the constant of flow, said adaptive constant-flow valve 10 is connected with the upstream and downstream pipeline through flange 10a.

As shown in Figure 4; The spool 10c of adaptive constant-flow valve 10 has the centre bore 006 that is slightly larger than guide rod 10h diameter; Its outer surface is a surface of revolution; Its external form bus is by upper reaches flat segments 004, downstream flat segments 001, in positioning boss section 005 under the downstream flat segments 001 and the effective control section between upper reaches flat segments 004 and downstream flat segments 001, and effectively control section is divided into adjacent effective control flat segments 002 of adjacent each other and downstream flat segments 001 and the effective control curved section 003 adjacent with upper reaches flat segments 004 again.Its middle and lower reaches flat segments 001 and upper reaches flat segments 004 play the effect of uniform flow field in adaptive constant-flow valve 10 courses of work, make flow-control more accurate, and their axial lengths separately are according to fixedly internal diameter size and the thickness decision of orifice plate 10d.The effective control section of spool 10c and fixedly form variable orifice A between the upstream face of orifice plate 10d, coming to control effectively fluid flow, that it is kept is constant.Positioning boss on the positioning boss section 005 combination downstream three-legged support 10g keeps high accuracy linear regulation spring 10e coaxial with guide rod 10h.When adaptive constant-flow valve 10 assembling, should guarantee effectively to control flat segments 002 downstream end initial position and fixedly the upstream face of orifice plate 10 is in the same plane.

Operation principle of the present invention is: as shown in Figure 1; The biphase gas and liquid flow incoming flow gets into gas-liquid separator 2 by trunk line 1 and is separated; This separation process does not also require that two-phase fluid thoroughly separates; Allow to carry tiny drop in the gas, also allow to carry small bubble in the liquid simultaneously, so separator 2 can be various easy crude separation devices.Gas after the separation gets into gas collection case 3; Liquid gets into liquid collector 4; Draw some gas branch roads 5 from gas collection case 3 and blender 8, carry out secondary in twos with some liquid branch roads 6 of drawing from liquid collector 4 and mix, the twice mixed two-phase fluid gets into each and distributes branch road.On each liquid branch road, mass dryness fraction control valve 7 is housed, combines 11 pairs of each distribution way outlet mass dryness fractions of mass dryness fraction flowmeter accurately to regulate in the distributor work incipient stage.On each distribution branch road, Flow-rate adjustment stop valve 9 is housed successively, adaptive constant-flow valve 10 and mass dryness fraction flowmeter 11.Flow-rate adjustment stop valve 9 not only can distribute the incipient stage according to the design flow value two phase flow to be carried out the initial coarse adjusting at two phase flow, and can guarantee stopping some working region flow supply or changing and close those distribution branch roads when some distributes branch road adaptive constant-flow valve.Adaptive constant-flow valve 10 can effectively control to adjust each flow that distributes branch road in the course of the work.

Like Fig. 2 and shown in Figure 4; The concrete control and regulation process of adaptive constant-flow valve 10 is: when adaptive constant-flow valve 10 front and back pressure reduction less than its initialization pressure reduction the time; The compression of high accuracy linear regulation spring 10e makes effective control flat segments 002 of spool 10c be positioned at fixedly orifice plate 10d; The circulation area of variable orifice A keeps maximum and size can not change, and flow changes with pressure reduction, and this pressure reduction has just reached initialization pressure reduction when flow reaches static setting value.When adaptive constant-flow valve 10 front and back pressure reduction are in initialization pressure reduction and the maximum operating pressure differential scope; The compression of high accuracy linear regulation spring 10e makes effective control curved section 003 of spool 10c get into fixedly in the orifice plate 10d; Be embodied in: the moment that pressure reduces or incoming-flow pressure increases in the working region, through the flow increase of adaptive constant-flow valve 10, this moment, spool 10c upstream and downstream two ends pressure reduction increased; Stress balance on the spool 10c is damaged; Spool moves downstream, thereby the circulation area of variable orifice A reduces, and makes flow keep original numerical value at last; In like manner; The moment that pressure increases or incoming-flow pressure reduces in the working region, through the flow minimizing of adaptive constant-flow valve 10, spool 10c upstream and downstream two ends pressure reduction reduces; Stress balance on the spool 10c is damaged; Spool 10c upstream moves, thereby the increase of the circulation area of variable orifice A, and flow is remained unchanged basically.When adaptive constant-flow valve 10 front and back pressure reduction greater than its maximum operating pressure differential the time, high accuracy linear regulation spring 10e is by compression fully, and the circulation area of variable orifice A keeps minimum and size can not change, and flow changes with the variation of pressure reduction.

As shown in Figure 5, this is an application self-adapting permanent flow valve, has the gas-liquid two-phase fluid distribution system of three distribution branch roads, and the structure of one of them adaptive constant-flow valve 10 is shown among the figure.P1 is the fashionable blender internal pressure size of secondary mixing, and P2 is the pressure size of adaptive constant-flow valve 10 import departments; P3 is the pressure size in adaptive constant-flow valve 10 exits.In this distribution system, adaptive constant-flow valve 10 is equivalent to a restricting element that local resistance is variable, and its spool 10c is at P2, keeps dynamic equilibrium under the resilient force of P3 difference force and high accuracy linear regulation spring 10e between the two.

In the initialization pressure reduction and maximum operating pressure differential scope of adaptive constant-flow valve 10; When working region pressure reduced, promptly P3 reduced, and distribute the branch road flow that the trend of increase is arranged this moment; Spool 10c moves downstream; Thereby the circulation area of spool 10c and the variable orifice A that fixedly forms between the orifice plate 10d upstream face reduces, and flow is kept original numerical value, and adaptive constant-flow valve 10 two ends pressure reduction become big simultaneously; The situation that working region pressure increases, in like manner.The fluctuation of working region, downstream pressure is is just digested and assimilated and is passed less than upstream region by adaptive constant-flow valve 10 like this, promptly can P1 not exerted an influence, and also can not have influence on the flow and the mass dryness fraction of other each branch roads naturally.

In the initialization pressure reduction and maximum operating pressure differential scope of adaptive constant-flow valve 10, when the upper reaches are responsible for incoming-flow pressure and are increased, i.e. P1; P2 increases; Distribute this moment branch road through flow the trend of increase to be arranged, spool 10c moves downstream, and the circulation area of variable orifice A reduces; Flow is kept original numerical value, and this moment, adaptive constant-flow valve 10 two ends pressure reduction became big; The situation that incoming-flow pressure reduces is responsible at the upper reaches, in like manner.Adaptive constant-flow valve 10 been has just has been digested and assimilated the upper reaches and has been responsible for the influence that incoming-flow pressure fluctuates like this, makes each distribute the flow of branch road to keep constant.

Like Fig. 1 and shown in Figure 5, distributing the incipient stage, regulate Flow-rate adjustment stop valve 9 earlier and make adaptive constant-flow valve 10 two ends pressure reduction be within its operting differential pressure scope, combine mass dryness fraction flowmeter 11 to regulate mass dryness fraction control valve 7 then and make each branch road mass dryness fraction consistent; In the course of the work, owing between split-phase type distributor gas collection case and the liquid collector lower branch line (not shown in FIG.) is arranged, can regulate a way outlet mass dryness fraction and incoming flow main line mass dryness fraction automatically and be consistent.When person in charge's incoming flow mass dryness fraction changed, adaptive constant-flow valve 10 just kept constant flow under the corresponding hybrid density of new mass dryness fraction.

When needs change certain flow that distributes branch road; Only need close the Flow-rate adjustment stop valve 9 of this branch road earlier; Change the spool 10c of the adaptive constant-flow valve 10 of corresponding flow, fixedly orifice plate 10d or regulating spring 10e regulate the Flow-rate adjustment stop valve 9 on this distribution branch road then; Make adaptive constant-flow valve 10 two ends pressure reduction be within its operting differential pressure scope, combine mass dryness fraction flowmeter 11 to regulate this branch road mass dryness fraction control valve 7 again and make consistent with other branch road mass dryness fractions.Because adaptive constant-flow valve 10 has the effect of the pressure oscillation of digesting and assimilating, thus need not adjust the structural parameters of other branch roads, and make them keep self constant flow separately.Like this, the Flow-rate adjustment of some branch road just can not exert an influence to other branch roads, has realized the quick adjustment of flow.

The present invention can realize in certain scope that the flow in certain local work area territory is independent of pressure and the variation of working region pressure of being responsible for incoming flow and keeps constant; The influence that flow that simultaneously should the zone is not changed by other regional work pressure and flow yet, and can regulate automatically in the course of the work make a way outlet mass dryness fraction be responsible for the incoming flow mass dryness fraction and be consistent.

The present invention not only can be applied to the distribution of two-phase fluids such as air-water under the normal temperature state, during the cold-producing medium two phase flow under the steam under the condition of high temperature-water two phase flow or the low-temperature condition distributes, because it does not need the manual adjustment intervention, embodies its superiority more.In addition, this invention also can be applied to the assignment of traffic of the single-phase or two-phase fluid of ground or underground pipe network separately.Therefore can be widely used in fields such as oil, chemical industry, nuclear power.

Claims (10)

1. a gas-liquid two-phase fluid self-adaption constant fluidic distributor comprises gas-liquid separation device and blender (8), it is characterized in that: adaptive constant-flow valve (10) is housed on the distribution branch road behind each air and liquid mixer (8).

2. gas-liquid two-phase fluid self-adaption constant fluidic distributor according to claim 1 is characterized in that: between said blender (8) and adaptive constant-flow valve (10), Flow-rate adjustment stop valve (9) is housed.

3. gas-liquid two-phase fluid self-adaption constant fluidic distributor according to claim 1 is characterized in that: at said adaptive constant-flow valve (10) mass dryness fraction flowmeter (11) is housed afterwards.

4. according to claim 2 or 3 described gas-liquid two-phase fluid self-adaption constant fluidic distributors; It is characterized in that: said adaptive constant-flow valve (10) comprises valve body (10b); And the coaxial spool (10c) of valve body (10b), guide rod (10h) passes spool (10c), is provided with upper reaches three-legged support (10f) at the upper reaches of guide rod (10h); Have and the coaxial screwed hole of guide rod (10h) in the middle of the upper reaches three-legged support (10f); And with guide rod (10h) through being threaded, upper reaches three-legged support (10f) adopts concentric gap to cooperate with valve body (10b), is provided with downstream three-legged support (10g) in the downstream of guide rod (10h); Downstream three-legged support (10g) is fixed to valve body (10b) internal chamber wall coaxially; Its center has through hole, so that be connected with guide rod (10h), between said spool (10c) and downstream three-legged support (10g), is installed with the high accuracy linear regulation spring (10e) that is sleeved on the guide rod (10h); Between valve body (10b) and spool (10c), be provided with fixedly orifice plate (10d); Fixedly orifice plate (10d) is fixed on the internal chamber wall of valve body (10b) coaxially, and at spool (10c) outer surface and fixedly form variable orifice (A) between the upstream face of orifice plate (10d), said adaptive constant-flow valve (10) is connected with the upstream and downstream pipeline through flange (10a).

5. gas-liquid two-phase fluid self-adaption constant fluidic distributor according to claim 4 is characterized in that: said spool (10c) centre bore (006) internal diameter is greater than the diameter of guide rod (10h), and spool (10c) can be free to slide on guide rod (10h).

6. gas-liquid two-phase fluid self-adaption constant fluidic distributor according to claim 4; It is characterized in that: said spool (10c) outer surface is a surface of revolution; Its external form bus by upper reaches flat segments (004), downstream flat segments (001), be positioned at the positioning boss section (005) under the downstream flat segments (001) and be positioned at upper reaches flat segments (004) and downstream flat segments (001) between effective control section; Effectively control section is divided into effective control flat segments (002) adjacent with downstream flat segments (001) adjacent each other and the effective control curved section (003) adjacent with upper reaches flat segments (004) again, and effectively the molded lines equation of control section is:

$\left\{\begin{array}{cc}y=h_0,& x\&Element;(0,b]\\ x=b\&CenterDot;{\left(\frac{D^2-{{4h}_0}^2}{D^2-{4y}^2}\right)}^2\&CenterDot;\frac{{4y}^2-d^2}{{{4h}_0}^2-d^2}\&CenterDot;{\left[\frac{(D^2-4y^2)\&CenterDot;({{4h}_0}^2-d^2)}{({4y}^2-d^2)\&CenterDot;(D^2-4{h_0}^2)}\right]}^{\frac{{2d}^2}{D^2-d^2}},& x\&Element;(b,L)\end{array}\right.$

Parameter: $b=\frac{\mathrm{\&pi;}({h_0}^2-\frac{d^2}{4})\&times;\mathrm{\&Delta;}{P}_1}{k},$ $h_0=\sqrt{{\left(\frac{D}{2}\right)}^2-\frac{Q}{\mathrm{C\&pi;}\sqrt{2\mathrm{\&rho;\; \&Delta;}{P}_1}}}$

Above various in: Q is a design discharge; ρ is the two phase flow hybrid density; Δ P ₁Be design initialization pressure reduction; C is a discharge coefficient; D is fixing orifice plate (10d) internal diameter; D is guide rod (10h) diameter; K is the coefficient of elasticity of high accuracy linear regulation spring (10e); L is the maximum compressibility of high accuracy linear regulation spring (10e); (0, b] be the interval range of effectively controlling flat segments (002); (b L) is the interval range of effectively controlling curved section (003).

7. gas-liquid two-phase fluid self-adaption constant fluidic distributor according to claim 4; It is characterized in that: all have the regulating spring positioning boss on said spool (10c) and the downstream three-legged support (10g), the two ends of said high accuracy linear regulation spring (10e) are installed on the regulating spring positioning boss on spool (10c) and the downstream three-legged support (10g).

8. gas-liquid two-phase fluid self-adaption constant fluidic distributor according to claim 4 is characterized in that: said high accuracy linear regulation spring (10e) is that high accuracy linear regulation spring parallel connection that one or at least two length differ is sleeved on together and forms.

9. gas-liquid two-phase fluid self-adaption constant fluidic distributor according to claim 1 is characterized in that: on each liquid branch road (6), mass dryness fraction control valve (7) is housed.

10. gas-liquid two-phase fluid self-adaption constant fluidic distributor according to claim 4 is characterized in that: said adaptive constant-flow valve (10) can be applied to separately in ground or the underground single-phase or heterogeneous fluid pipe network, realizes that the equilibrium of fluid distributes.

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