CN102489045B - 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, the 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, often need the liquid phase ratio of respectively distributing branch road to be consistent, avoid occuring serious phenomenon of phase separation, guarantee that simultaneously (this fluctuation is dynamic often when fluctuation occurs for incoming flow or some working regions pressure, change at random), can control the flow of each branch road, the static state setting flow that maintenance enters each working region is substantially constant, and when needs are regulated some branch road flow, can realize quick adjustment, and flow and the mass dryness fraction of other branch roads do not exerted an influence.This just needs a kind of device incoming flow to be distributed the control and regulation of mass dryness fraction and the constant flow rate such as carrying out.

At present both at home and abroad the main dispensing branch that adopts is at structure and formal symmetrical distributor, as the threeway that liquidates, header, spherical tank etc., to enter each branch road with guaranteeing the two-phase fluid even odds.But because 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 occurs 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.The uniformity of distributing in order to improve the symmetric form distributor, the scheme that proposes at present mainly contains, before distributor, strengthen first the mixing of multiphase flow or carry out the method for salary distribution that reallocation is processed in rectification, perhaps first before distributor hardening constituent separate the again secondary split-phase type distribution method of mixing etc. of then single-phase distribution.

Chinese patent application CN101839395A has proposed a kind of gas-liquid two-phase flow uniform distribution device, basic principle is by " flow pattern adjustment " the asymmetric flow pattern of upstream to be rectified and improved into thickness of liquid film along circumferential equally distributed ring-type flow pattern first, make the equiprobability of each dispensing branch contact liquid phase of downstream, at the entrance of each dispensing branch critical spray nozzle is installed again, impel biphase gas and liquid flow in nozzle, to form critical flow, thereby improve the impact of working region, downstream pressure parameter variation on distributing, realize uniform distribution.But owing to will pass through first the flow pattern adjustment, the factors such as the flow of its rectification effect and two phase flow and phase content are relevant, and the flow that passes through simultaneously each distribution branch road of critical spray nozzle must be fully equal, otherwise previous flow pattern adjustment will lose meaning.And use critical spray nozzle and keep constant flow, need to make flow velocity reach critical condition, this certainly will cause the very large pressure loss, has therefore greatly limited 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.

Chinese patent application CN100402004A discloses a kind of gas-liquid diphasic fluid distributor, basic thought is to strengthen first being separated of two phase flow to distribute again, namely at first gas-liquid two-phase fluid is separated into single-phase or near single-phase gas and liquid, then gas, liquid distribute respectively again, again mix in twos more at last, enter each working region by flow control valve.Owing to the distribution of two-phase fluid is converted to the distribution of monophasic fluid, improved the effect of distributing, enlarged simultaneously the range of application of distributor.But since two-phase fluid from each branch road dispensing branch out 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 will produce obviously the flow of other branch roads and mass dryness fraction when regulating a certain branch road and disturb, need to repeatedly regulate between each branch road and just can reach satisfied effect, this greatly reduces operating efficiency.US Patent No. 6250131, US7771522 etc. also adopt similar principles.

In sum, the symmetrical distributor of arm has been difficult to satisfy present Production requirement, and in advance reinforcement mixes or the method for salary distribution range of application of rectification is narrow, is very restricted in engineering is used.And a few class distributors that propose at present, all can not well carry out self adaptation in incoming flow or some working region pressure generation fluctuation 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 according to the actual requirements quick adjustment.

Summary of the invention

Defective and deficiency for 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 wider range of flow, digest and assimilate incoming flow or some working region pressure oscillation to the impact of system head characteristics, also avoid simultaneously some Flow-rate adjustment of distributing branch road to distribute branch road flow and mass dryness fraction to exert an influence to other, realized the flow quick adjustment.

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, and the distribution branch road behind each air and liquid mixer 8 is equipped with adaptive constant-flow valve 10.

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

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

Described adaptive constant-flow valve 10 comprises valve body 10b, the spool 10c coaxial with valve body 10b, guide rod 10h passes spool 10c, be provided with upstream three-legged support 10f in the upstream of guide rod 10h, upstream three-legged support 10f is middle with the screwed hole coaxial with guide rod 10h, and be threaded connection with guide rod 10h, upstream 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, its center has through hole, so that 10h is connected with guide rod, between described spool 10c and downstream three-legged support 10g, be installed with the high-precision linear regulating 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, described adaptive constant-flow valve 10 is connected with the upstream and downstream pipeline by flange 10a.

Described 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 at guide rod 10h.

Described spool 10c outer surface is surface of revolution, its external form bus is by upstream flat segments 004, downstream flat segments 001, in the positioning boss section 005 under the downstream flat segments 001 and the effective control section between upstream flat segments 004 and downstream flat segments 001, effectively control section is divided into again the adjacent effective control flat segments 002 of adjacent each other and downstream flat segments 001 and the effective control curved section 003 adjacent with upstream flat segments 004, and effectively the molded line 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 design discharge; ρ is the two phase flow hybrid density; Δ P ₁Design initialization pressure reduction; C is discharge coefficient; D is fixing orifice plate 10d internal diameter; D is guide rod 10h diameter; K is the coefficient of elasticity of high-precision linear regulating spring 10e; L is the maximum compressibility of high-precision linear regulating 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 with the regulating spring positioning boss, the two ends of described high-precision linear regulating spring 10e are installed on the regulating spring positioning boss on spool 10c and the downstream three-legged support 10g on described spool 10c and the downstream three-legged support 10g.

Described high-precision linear regulating spring 10e is that the high-precision linear regulating spring parallel connection that or at least two length differ is set in together formation.

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

Described 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 header 3 and liquid collector 4 again, carrying out secondary at blender 8 in twos mixes, pass through successively Flow-rate adjustment stop valve 9 after the mixing, adaptive constant-flow valve 10 and mass dryness fraction flowmeter 11 enter each working region.At 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 initial coarse adjustment according to design flow value convection current amount at two phase flow, 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.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 the circulation area that moves axially accordingly to change fluid automatically, thereby change the resistance coefficient of self, so that system respectively distributes branch road resistance autobalance, 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 wider range of flow like this, digest and assimilate incoming flow or some working region pressure oscillation to the impact of system head characteristics, also avoided some Flow-rate adjustment of distributing branch road to distribute branch road flow and mass dryness fraction to exert an influence to other simultaneously.

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

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

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-stability, has reduced working strength, has improved working environment.

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

4. simple in structure, easy to operate, when needs change the injection flow in certain zone, only need to change the fixedly orifice plate in the adaptive constant-flow valve of this branch road, 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 automatically regulate each liquid phase ratio of distributing a way outlet in the course of work and be consistent with the liquid phase ratio of being responsible for incoming flow, the mass dryness fractions such as realization are regulated.

Description of drawings

Fig. 1 is 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

The invention will be further described below in conjunction with the drawings and specific embodiments.

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

As shown in Figures 2 and 3, adaptive constant-flow valve 10 comprises valve body 10b, the spool 10c coaxial with valve body 10b, guide rod 10h passes spool 10c, be provided with upstream three-legged support 10f in the upstream of guide rod 10h, upstream three-legged support 10f is middle with the screwed hole coaxial with guide rod 10h, and be threaded connection with guide rod 10h, upstream 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, its center has through hole, so that 10h is connected with guide rod, on spool 10c and the downstream three-legged support 10g all with the regulating spring positioning boss, high-precision linear regulating 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, at spool 10c outer surface and fixedly form variable orifice A between the upstream face of orifice plate 10d, slidably spool 10c and high-precision linear regulating spring 10e change the circulation area size of variable orifice A automatically according to the pressure reduction at upstream and downstream two ends, keep the constant of flow, described adaptive constant-flow valve 10 is connected with the upstream and downstream pipeline by 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 surface of revolution, its external form bus is by upstream flat segments 004, downstream flat segments 001, in the positioning boss section 005 under the downstream flat segments 001 and the effective control section between upstream flat segments 004 and downstream flat segments 001, and effectively control section is divided into again the adjacent effective control flat segments 002 of adjacent each other and downstream flat segments 001 and the effective control curved section 003 adjacent with upstream flat segments 004.Its middle and lower reaches flat segments 001 and upstream flat segments 004 play the effect of uniform flow field in adaptive constant-flow valve 10 courses of work, so that flow-control is more accurate, their axial lengths separately are according to fixedly internal diameter size and the thickness of orifice plate 10d determine.The effective control section of spool 10c and fixedly form variable orifice A between the upstream face of orifice plate 10d, effectively controlling fluid flow, that it is kept is constant.Positioning boss section 005 keeps high-precision linear regulating spring 10e coaxial with guide rod 10h in conjunction with the positioning boss on the three-legged support 10g of downstream.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 enters 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, simultaneously also allow to carry small bubble in the liquid, so separator 2 can be various easy crude separation devices.Gas after the separation enters gas header 3, liquid enters liquid collector 4, draw some gas branch roads 5 from gas header 3 and carry out in twos secondary with some liquid branch roads 6 of drawing from liquid collector 4 blender 8 and mix, the mixed two-phase fluid of secondary enters each and distributes branch road.At each liquid branch road mass dryness fraction control valve 7 is housed, carries out fine adjustment in the distributor work incipient stage in conjunction with 11 pairs of each distribution way outlet mass dryness fractions of mass dryness fraction flowmeter.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 initial coarse adjustment 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.

Such as 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-precision linear regulating spring 10e is so that effective control flat segments 002 of spool 10c is positioned at fixedly orifice plate 10d, the circulation area of variable orifice A keeps maximum and size can not change, flow changes with pressure reduction, until flow when reaching static setting value this pressure reduction just reached initialization pressure reduction.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-precision linear regulating spring 10e so that effective control curved section 003 of spool 10c enter fixedly in the orifice plate 10d, be embodied in: in the moment that working region pressure reduces or incoming-flow pressure increases, flow by adaptive constant-flow valve 10 increases, this moment, spool 10c upstream and downstream two ends pressure reduction increased, stress balance on the spool 10c is damaged, spool is mobile downstream, thereby the circulation area of variable orifice A reduces, and makes at last flow keep original numerical value; In like manner, in the moment that working region pressure increases or incoming-flow pressure reduces, flow by adaptive constant-flow valve 10 reduces, spool 10c upstream and downstream two ends pressure reduction reduces, stress balance on the spool 10c is damaged, spool 10c is upstream mobile, thereby the increase of the circulation area of variable orifice A, and flow is remained unchanged substantially.When adaptive constant-flow valve 10 front and back pressure reduction greater than its maximum operating pressure differential the time, high-precision linear regulating spring 10e is fully compressed, 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.Blender internal pressure size when P1 is the secondary mixing, 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, P3 between the two difference force and the resilient force of high-precision linear regulating spring 10e under keep dynamic equilibrium.

In the initialization pressure reduction and maximum operating pressure differential scope of adaptive constant-flow valve 10, when working region pressure reduces, be that P3 reduces, distribute the branch road flow that the trend of increase is arranged this moment, spool 10c is mobile 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 large 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, namely can P1 not exerted an influence, and naturally also can not have influence on flow and the mass dryness fraction of other each branch roads.

In the initialization pressure reduction and maximum operating pressure differential scope of adaptive constant-flow valve 10, when upstream supervisor's incoming-flow pressure increases, be P1, P2 increases, distribute this moment branch road that the trend of increase is arranged by flow, spool 10c is mobile 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 large; The situation that upstream supervisor's incoming-flow pressure reduces, in like manner.Adaptive constant-flow valve 10 been has just has been digested and assimilated the impact of upstream supervisor's incoming-flow pressure fluctuation like this, makes each distribute the flow of branch road to keep constant.

Such as Fig. 1 and shown in Figure 5, distributing the incipient stage, then first adjust flux adjustable cut-off valve 9 regulates mass dryness fraction control valve 7 so that each branch road mass dryness fraction is consistent in conjunction with mass dryness fraction flowmeter 11 so that adaptive constant-flow valve 10 two ends pressure reduction are within its operting differential pressure scope; In the course of the work, owing between split-phase type distributor gas header and the liquid collector lower branch line (not shown in FIG.) being arranged, can automatically regulate a way outlet mass dryness fraction and incoming flow main line mass dryness fraction and be consistent.When supervisor's incoming flow mass dryness fraction changed, adaptive constant-flow valve 10 just kept constant flow under hybrid density corresponding to new mass dryness fraction.

When needs change the flow of certain distribution branch road, only need to close first the Flow-rate adjustment stop valve 9 of this branch road, change the spool 10c of the adaptive constant-flow valve 10 of corresponding flow, fixedly orifice plate 10d or regulating spring 10e, then regulate the Flow-rate adjustment stop valve 9 on this distribution branch road, so that adaptive constant-flow valve 10 two ends pressure reduction are within its operting differential pressure scope, regulate this branch road mass dryness fraction control valve 7 so that consistent with other branch road mass dryness fractions in conjunction with mass dryness fraction flowmeter 11 again.Because adaptive constant-flow valve 10 has the effect of the pressure oscillation of digesting and assimilating, thus do not need to adjust the structural parameters of other branch roads, and make them keep separately self constant flow.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 supervisor's incoming flow and keeps constant, the impact that flow that simultaneously should the zone is not changed by other regional work pressure and flow yet, and can automatically regulate in the course of the work so that a way outlet mass dryness fraction is consistent with supervisor's incoming flow mass dryness fraction.

The present invention not only can be applied to the distribution of the 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, more embodies its superiority.In addition, this invention also can be applied to separately the assignment of traffic of the single-phase or two-phase fluid of ground or underground pipe network.Therefore can be widely used in the fields such as oil, chemical industry, nuclear power.

Claims (9)

1. gas-liquid two-phase fluid self-adaption constant fluidic distributor, comprise gas-liquid separation device and blender (8), distribution branch road behind each air and liquid mixer (8) is equipped with adaptive constant-flow valve (10), it is characterized in that: described adaptive constant-flow valve (10) comprises valve body (10b), and the coaxial spool (10c) of valve body (10b), guide rod (10h) passes spool (10c), be provided with upstream three-legged support (10f) in the upstream of guide rod (10h), upstream three-legged support (10f) is middle with the screwed hole coaxial with guide rod (10h), and be threaded connection with guide rod (10h), upstream 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, its center has through hole, so that (10h) is connected with guide rod, between described spool (10c) and downstream three-legged support (10g), be installed with the high-precision linear regulating 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), described adaptive constant-flow valve (10) is connected with the upstream and downstream pipeline by flange (10a).

2. gas-liquid two-phase fluid self-adaption constant fluidic distributor according to claim 1, it is characterized in that: described spool (10c) centre bore (006) internal diameter is greater than the diameter of guide rod (10h), and spool (10c) can be free to slide at guide rod (10h).

3. gas-liquid two-phase fluid self-adaption constant fluidic distributor according to claim 1, it is characterized in that: described spool (10c) outer surface is surface of revolution, its external form bus is by upstream 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 upstream flat segments (004) and downstream flat segments (001) between effective control section, effectively control section is divided into again the effective control flat segments (002) adjacent with downstream flat segments (001) adjacent each other and the effective control curved section (003) adjacent with upstream flat segments (004), and effectively the molded line equation of control section is:

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

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 design discharge; ρ is the two phase flow hybrid density; Δ P ₁Design initialization pressure reduction; C is discharge coefficient; D is fixing orifice plate (10d) internal diameter; D is guide rod (10h) diameter; K is the coefficient of elasticity of high-precision linear regulating spring (10e); L is the maximum compressibility of high-precision linear regulating 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).

4. gas-liquid two-phase fluid self-adaption constant fluidic distributor according to claim 1, it is characterized in that: all with the regulating spring positioning boss, the two ends of described high-precision linear regulating spring (10e) are installed on the regulating spring positioning boss on spool (10c) and the downstream three-legged support (10g) on described spool (10c) and the downstream three-legged support (10g).

5. gas-liquid two-phase fluid self-adaption constant fluidic distributor according to claim 1 is characterized in that: described high-precision linear regulating spring (10e) is that the high-precision linear regulating spring parallel connection that or at least two length differ is set in together formation.

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

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

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

9. gas-liquid two-phase fluid self-adaption constant fluidic distributor according to claim 1 is characterized in that: described adaptive constant-flow valve (10) can be applied to separately realize that the equilibrium of fluid distributes in ground or the underground single-phase or heterogeneous fluid pipe network.

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