CN109758850A - Gas-liquid Coalescence filter core with pre-separation function - Google Patents
Gas-liquid Coalescence filter core with pre-separation function Download PDFInfo
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- CN109758850A CN109758850A CN201910186572.6A CN201910186572A CN109758850A CN 109758850 A CN109758850 A CN 109758850A CN 201910186572 A CN201910186572 A CN 201910186572A CN 109758850 A CN109758850 A CN 109758850A
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Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
- Separating Particles In Gases By Inertia (AREA)
Abstract
The present invention provides a kind of gas-liquid Coalescence filter core with pre-separation function, in filter core inner frame, filter core coalescing layer, filter core drain layers, the outer skeleton of filter core be successively nested with from inside to outside, and be column construction；Air inlet is set on filter core lower cover；Guiding device is set at air inlet, for making the gas into filter core generate swirling eddy；The flow-guiding channel is set to the inside of the filter core inner frame and connects the guiding device；When the swirling eddy flows in the flow-guiding channel, drop is isolated under the influence of centrifugal force and is thrown to the flow-guiding channel wall surface and under the effect of gravity discharge downwards, can be efficiently used filter core inner space, be occupied little space, it realizes multistage filtering pond, has effectively filtered out the drop in gas.
Description
Technical field
The present invention relates to multiphase flow dividing technology fields more particularly to a kind of gas-liquid with pre-separation function to coalesce filter
Core.
Background technique
Gas-liquid filteration is widely used in various industrial process, for example, natural gas purification and pipeline, compressed air filtering,
Dry gas seals and fuel gas filtering.For example, the liquid impurity carried secretly during natural gas processing and long distance delivery, will cause meter
Measuring appratus and compressor set damage, dry gas seals failure, corrosive pipeline and abrasion, it is therefore desirable to which corresponding gas-liquid filteration dress is set
Set the liquid impurity in (such as coalescing filter) removal natural gas, wherein small drop is mainly by the poly- of coalescing filter
The coarse separation effect of knot filter core is removed.
Natural gas impurities are complex in live gas pipeline, operating condition changes greatly, liquid content fluctuates larger, liquid
Impurity mainly has condensate, free water and can carry the high viscositys liquid such as lubricating oil secretly after the compressor station compressor set of centre setting
Drop.When scene is in high concentration, big partial size drop operating condition, existing Coalescence filter core treating capacity is unable to satisfy requirement, and impurity will be fast
Speed blocking filter core, the high viscosity drop for causing filter core to fail, and being carried secretly in air-flow trapped by Coalescence filter core after in fibrous inside
It is difficult to be discharged in time, filter core pressure drop is caused to increase sharply, (drop that coalescing filter has trapped is due to gas for drop reentrainment
The effect of stream can be again introduced into downstream airflow, so as to cause the increase of concentration of liquid drops in downstream airflow, filter efficiency be caused to decline,
This phenomenon is known as reentrainment, is very easy to occur in the micron-scale in drop) will also it increase.
Therefore, existing Coalescence filter core, which can not handle live liquid content and fluctuate, contains high viscosity liquid impurity in larger, incoming flow
Etc. complex situations.To guarantee that core equipment operates normally, inertia separator, cyclonic separation can be generally arranged in each compressor station on the way
The multiple-stage separator of device, filter separator and coalescing separator combination can cope with complex working condition although its treating capacity is big,
There are it is at high cost, take up a large area, overall structure and process flow are complicated, not operation easy to install the disadvantages of.
A kind of multistage filtering element (U.S. patent Nos US8936661B2) is provided in the prior art, and referring to Fig. 1, this is more
Grade filter element specifically include that tubular filter guiding piece, outer prefilter ferrule element, the first order of internal filter element and
The elements such as second level composition；Fluid passes through external prefilter ferrule element, enters in internal filter element, then passes through inside
The first order of filter cell enters the second level by tubular filter guiding piece, and wears outward in third filtration step
Cross internal element.The invention in three-stage filtration component element set a to filter element, will can be classified each in removal fluid
The different impurity of kind.
But the multistage filtering element does not utilize filter core inner space rationally, space occupied is larger, meanwhile,
The multistage filtering element uses porous media as pre-separation element, by three-stage filtration component element set a to filter element
On, when containing the complex working conditions such as high viscosity liquid impurity in air-flow, impurity, which is attached to, to be not easy to be discharged inside porous media, will be blocked
Porous media causes pressure drop sharply to increase, and filter element life is caused to reduce, and need to frequently replace.
A kind of high efficiency filter coalescence integrated filter element (Chinese invention patent CN107930185A), ginseng are also provided in the prior art
See Fig. 2, high efficiency filter coalescence integrated filter element includes pressing device, integrates gland, filter body, agglomerate and integrated end cap,
Filter body connects group with integrated end cap and is combined into a conglomerate with agglomerate by pressing device, integrated gland.
High efficiency filter coalescence integrated filter element is composed of filtering body and agglomerate by certain structure, and filter core is extended
Service life, it is at low cost, it occupies little space.But high efficiency filter coalescence integrated filter element still uses porous media as pre-
Resolution element, when containing the complex working conditions such as high viscosity liquid impurity in air-flow, impurity, which is attached to, to be not easy to be discharged inside porous media,
Porous media will be blocked, pressure drop is caused sharply to increase, filter element life is caused to reduce, need to frequently be replaced.
Summary of the invention
In view of this, the present invention provides a kind of gas-liquid Coalescence filter core with pre-separation function, by filter core inner frame
Defined by guiding device and flow-guiding channel are set in space, filter core inner space can be efficiently used, occupied little space, and solved
Certainly when containing the complex working conditions such as high viscosity liquid impurity in air-flow, impurity, which is attached to, to be not easy to be discharged inside porous media, will be blocked
The problem of porous media causes pressure drop sharply to increase, and filter element life is caused to reduce, and need to frequently replace, and be suitable for scene and contain liquid
Amount is fluctuated containing complex situations such as high viscosity liquid impurity in larger, incoming flow, and effectively reduces drop reentrainment phenomenon.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of gas-liquid Coalescence filter core with pre-separation function, comprising: filter core inner frame, filter core coalescing layer, filter core drain
The outer skeleton of layer, filter core, filter core upper end cover, filter core lower cover, guiding device and flow-guiding channel；
The outer skeleton of the filter core inner frame, filter core coalescing layer, filter core drain layers, filter core is successively arranged from inside to outside, and is
Column construction；
The upper end of skeleton outside the filter core is arranged in the filter core upper end cover, and filter core lower cover is arranged in outside the filter core under skeleton
End；
Air inlet is set on the filter core lower cover；
Guiding device is set at the air inlet, for making the gas into filter core generate swirling eddy；
The flow-guiding channel is set to inside the filter core inner frame, and connects the guiding device.
Further, which uses axial diversion blade.
Further, which is equipped with arc sump pit, which isolates liquid under the influence of centrifugal force
Drop, the drop move to the arc sump pit under the action of swirling eddy, are discharged downwards along the arc sump pit.
Further, which is equipped with R-joining, and the R-joining is by the inclination side on the outside of the flow-guiding channel inwardly
To the flow direction with the swirling eddy angle less than 90 degree.
Further, which is equipped with horn mouth, spreads the swirling eddy for water conservancy diversion.
Further, which is provided with through-hole, and the first diversion trench is arranged in the exit of the through-hole.
Further, which is obliquely installed along airflow direction.
Further, the inner wall of the filter core inner frame is equipped with sump pit, and the swirling eddy is in the filter core inner frame and is somebody's turn to do
When Space Rotating between flow-guiding channel flows, the drop isolated under the influence of centrifugal force is discharged downwards along the sump pit.
Further, the inner wall of the filter core inner frame is equipped with arcuate structure, is provided with through-hole in the arcuate structure two sides, should
The second diversion trench is arranged in the exit of through-hole.
Further, slanting baffle hook is set above the filter core inner frame inner wall, through-hole.
Further, the outer skeleton of the filter core is equipped with recirculation hole, and the filter core outer skeleton inner wall circulation hole site is equipped with the
Three diversion trenches.
Gas-liquid Coalescence filter core provided by the invention with pre-separation function, in the filter core inner frame, filter core coalescence
Layer, the outer skeleton of filter core drain layers, filter core are successively nested with from inside to outside, and are column construction；The filter core upper end cover is arranged at this
The lower end of skeleton outside the filter core is arranged in the upper end of the outer skeleton of filter core, filter core lower cover；Air inlet is set on the filter core lower cover；
Guiding device is set at the air inlet, for making the gas into filter core generate swirling eddy；The flow-guiding channel is set to the filter
The inside of in-core skeleton simultaneously connects the guiding device；When the swirling eddy flows in the flow-guiding channel, in the effect of centrifugal force
Under isolate drop and be thrown to the flow-guiding channel wall surface and under the effect of gravity downwards discharge.
Firstly, can be efficiently used by the way that guiding device and flow-guiding channel are arranged in the space defined by filter core inner frame
Filter core inner space, it is compact-sized, it occupies little space, saves 50% or more space, and easy to disassemble.
Secondly, making the gas into filter core generate swirling eddy, flow-guiding channel by the way that guiding device is arranged at air inlet
Certain separated space (or free air space) is provided for swirling eddy, so that the drop carried secretly in swirling eddy is in centrifugal force
The inner wall of flow-guiding channel is separated and is thrown under effect, and the drop on inner wall is gathered together, under the effect of gravity to dirty
It is dynamic to exclude in time, the drop in gas has been effectively filtered out, treating capacity requirement is met.
Furthermore after swirling eddy flow to filter core upper end cover, by the blocking of the filter core upper end cover, rotation is downward and spreads
To the space between guiding device and filter core inner frame, rotation flows downward, that is, changes air-flow along the flowing side of inner frame
To the downward air-flow of the rotation isolates drop in air-flow under the action of centrifugal force and inertia, and in downward airflow function
Under, it is discharged downwards along inner frame inner wall, air-flow flows into filter core coalescing layer (alternatively referred to as filter fiber layer) through filter core inner frame, gas
The a small amount of drop of residue in body enters filter core coalescing layer with air-flow, big drop is agglomerated by filter core coalescing layer, in the effect of air-flow
It downstream to drain layers, is discharged downwards in drain layers, the gas by filtering is flowed outwardly by skeleton outside filter core, is realized with this
Multistage filtering, filter effect are good.High viscosity drop enter before coalescing layer under centrifugal force and inertia force effect can and the time-division
From discharge, and a small amount of liquid drop movement that coalescing layer absorbs to drain layers by being discharged in time under the action of downdraught, filter core coalesces
Layer only needs to absorb remaining a small amount of drop, prevents impurity from being blocked, and the high viscosity drop carried secretly in air-flow can be discharged in time, and
And drop reentrainment can be effectively reduced.
The present invention efficiently uses filter core inner space setting guiding device and channel rather than porous media pre-separation part
Drop, water conservancy diversion promote the thinking of drain, and the filter core designed can cope with liquid content fluctuation and sticky contaminant operating condition, will catch in time
The drop discharge that obtains, prolonging service life of filter elements, preventing from shutting down when replacement filter core influences normal production, can not increase yard dress
Meet treating capacity requirement on the basis of setting, and has many advantages, such as at low cost, compact-sized, saving space, easy to disassemble.
For above and other objects, features and advantages of the invention can be clearer and more comprehensible, preferred embodiment is cited below particularly,
And cooperate institute's accompanying drawings, it is described in detail below.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the application
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of existing multistage filtering element；
Fig. 2 is the structural schematic diagram that existing high efficiency filter coalesces integrated filter element；
Fig. 3 is the structural schematic diagram for the gas-liquid Coalescence filter core that the embodiment of the present invention has pre-separation function；
Fig. 4 is the structural schematic diagram that the embodiment of the present invention has guiding device 1 in the gas-liquid Coalescence filter core of pre-separation function；
Fig. 5 is the perspective view that the embodiment of the present invention has flow-guiding channel 2 in the gas-liquid Coalescence filter core of pre-separation function；
Fig. 6 is the sectional view that the embodiment of the present invention has flow-guiding channel 2 in the gas-liquid Coalescence filter core of pre-separation function；
Fig. 7 a is that the embodiment of the present invention has a kind of part of filter core inner frame in the gas-liquid Coalescence filter core of pre-separation function
Structural schematic diagram；
Fig. 7 b is the plan view of filter core inner frame in Fig. 7 a；
Fig. 8 is the part that the embodiment of the present invention has another filter core inner frame in the gas-liquid Coalescence filter core of pre-separation function
Structural schematic diagram；
Fig. 9 is that there are the partial structurtes of the outer skeleton of filter core in the gas-liquid Coalescence filter core of pre-separation function of the embodiment of the present invention to show
It is intended to；
Figure 10, which is shown, to be had the gas-liquid Coalescence filter core of pre-separation function using the embodiment of the present invention and uses conventional bowl
Process pressure drop correlation curve；
Figure 11, which is shown, to be had the gas-liquid Coalescence filter core of pre-separation function using the embodiment of the present invention and uses conventional bowl
Filter efficiency correlation curve.
Specific embodiment
In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application
Attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is only
The embodiment of the application a part, instead of all the embodiments.Based on the embodiment in the application, ordinary skill people
Member's every other embodiment obtained without making creative work, all should belong to the model of the application protection
It encloses.
It should be noted that term " includes " and " tool in the description and claims of this application and above-mentioned attached drawing
Have " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing a series of steps or units
Process, method, system, product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include without clear
Other step or units listing to Chu or intrinsic for these process, methods, product or equipment.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
When scene is in high concentration, big partial size drop operating condition, existing gas-liquid Coalescence filter core treating capacity, which is unable to satisfy, to be wanted
It asks, impurity will quickly block filter core, after the high viscosity drop for causing filter core to fail, and carrying secretly in air-flow is trapped by Coalescence filter core
It is difficult to be discharged in time in fibrous inside, causes filter core pressure drop to increase sharply, (coalescing filter has trapped drop reentrainment
Drop, so as to cause the increase of concentration of liquid drops in downstream airflow, caused since the effect of air-flow can be again introduced into downstream airflow
Efficiency decline is filtered, this phenomenon is known as reentrainment, is very easy to occur in the micron-scale in drop) will also it increase.
In order to solve the above technical problems, the embodiment of the present invention provides a kind of gas-liquid Coalescence filter core with pre-separation function,
By setting guiding device and flow-guiding channel in the space defined by filter core inner frame, filter core inner space can be efficiently used,
It occupies little space, and solves to work as in air-flow and be attached in porous media containing complex working conditions, impurity such as high viscosity liquid impurity
The problem of portion is not easy to be discharged, and will block porous media, pressure drop is caused sharply to increase, filter element life is caused to reduce, need to frequently replace,
And it is suitable for live liquid content to fluctuate containing complex situations such as high viscosity liquid impurity in larger, incoming flow, and effectively reduces drop
Reentrainment phenomenon.
Fig. 3 is the structural schematic diagram for the gas-liquid Coalescence filter core that the embodiment of the present invention has pre-separation function.As shown in figure 3,
The gas-liquid Coalescence filter core with pre-separation function, general vertical placement, specifically can include: filter core inner frame 3, filter core coalescing layer
4, the outer skeleton 6 of filter core drain layers 5, filter core, filter core upper end cover 7, filter core lower cover 8, guiding device 1 and flow-guiding channel 2；
Wherein, filter core coalescing layer 4 is mainly made of the lesser material in aperture, as glass fibre, polypropylene, polyester fiber with
And the materials such as metallic fiber, fibre diameter can be 0.5~40 μm, average pore size can be 5~40 μm, can be used hydrophobic oleophobic modified
Processing can be the combinations such as multi-lay winding or folding, can be a kind of material, can also be that there are certain associated a variety of materials in aperture
Expect compound or be composed, as bore diameter gradient is distributed；It can also be the processing technologys such as melt-blown, hot-forming, adhesive molding.
The aperture of the aperture ratio filter core coalescing layer material therefor of 5 material therefor of filter core drain layers is big, to be poly- by filter core
Liquid after tying layer provides apocenosis passage, can be the materials such as polyester fiber, polypropylene fibre and aramid fiber, and fibre diameter is relatively poly-
It is big to tie layer, fibre diameter can be 10-50 μm, and hydrophobic oleophobic modification can be used.
It is worth noting that the parameters such as fibre diameter, aperture and number of plies of 5 material of filter core coalescing layer 4 and filter core drain layers
It can be adjusted according to actual condition demand.
The outer skeleton 6 of the filter core inner frame 3, filter core coalescing layer 4, filter core drain layers 5, filter core is successively nested with from inside to outside, and
It is column construction.
Wherein, which includes cylindrical structure, triangular prism structure, tetragonous rod structure etc., including but not limited to this,
In order to describe conveniently, the embodiment of the present invention illustrates all parts by taking cylindrical structure as an example, art technology
Personnel are it is understood that cylindrical structure is only a kind of example, not limitation of the present invention.
The upper end of skeleton 6 outside the filter core is arranged in the filter core upper end cover 7, and the top of the filter core is shut, filter core lower cover 8
The lower end of skeleton 6 outside the filter core is set, the lower part of the filter core is shut.
In addition, the filter core lower cover 8 is equipped with air inlet 9, it preferably is equipped with air inlet 9 in 8 medium position of filter core lower cover,
The shape of the air inlet 9 and the cross sectional shape of the flow-guiding channel 2 match.
Guiding device 1 is set at the air inlet 9, which is entered inside filter core for making by the air inlet 9
Gas generates swirling eddy；
The flow-guiding channel 2 is set to inside the filter core inner frame 3, and separated by a distance with the filter core inner frame 3, i.e., and two
There is certain space between person.Meanwhile the flow-guiding channel 2 connects the guiding device 1, is preferably nested in the outer of the guiding device 1
Side, the swirling eddy for exporting for the guiding device 1 provide flow path (alternatively referred to as drop separation space).The rotary pneumatic
When stream flows in the flow-guiding channel 2, drop is isolated under the influence of centrifugal force and is thrown on 2 wall surface of flow-guiding channel, liquid
Drop pools together, and forms big drop or liquid stream, big drop or liquid stream under the effect of gravity along the inner wall of flow-guiding channel 2 towards
Lower discharge.
Gas-liquid Coalescence filter core provided in an embodiment of the present invention with pre-separation function, by being limited in filter core inner frame
Space in guiding device and flow-guiding channel are set, filter core inner space can be efficiently used, occupied little space.Secondly, by
Guiding device is set at air inlet, so that the gas to be filtered into filter core is generated swirling eddy, flow-guiding channel mentions for swirling eddy
For certain separated space (or free air space), so that the drop carried secretly in swirling eddy is isolated under the influence of centrifugal force
Carry out and be thrown to the inner wall of flow-guiding channel, the drop on inner wall is gathered together, and flow downward timely exclusion under the effect of gravity, is had
Effect has filtered out the drop in gas.Furthermore after swirling eddy flow to filter core upper end cover, by the blocking of the filter core upper end cover,
Rotation is downward and diffuses in the space between guiding device and filter core inner frame, and rotation flows downward, that is, changes air-flow edge
The flow direction of inner frame, the downward air-flow of the rotation isolate drop in air-flow under the action of centrifugal force and inertia, and
It under downward airflow function, is discharged downwards along inner frame inner wall, air-flow flows into filter core coalescing layer (alternatively referred to as through filter core inner frame
Filter fiber layer), a small amount of drop of residue in gas enters filter core coalescing layer with air-flow, is agglomerated into big liquid by filter core coalescing layer
Drop, flow to drain layers under the action of air-flow, is discharged downwards in drain layers, the gas by filtering by skeleton outside filter core to
Outer outflow realizes that multistage filtering, filter effect are good with this.Filter core coalescing layer only needs to absorb remaining a small amount of drop, prevents impurity will
It is blocked, and the high viscosity drop carried secretly in air-flow can be discharged in time, and can effectively reduce drop reentrainment.
The present invention efficiently uses filter core inner space setting guiding device and channel rather than porous media pre-separation part
Drop, water conservancy diversion promote the thinking of drain, and the filter core designed can cope with liquid content fluctuation and sticky contaminant operating condition, will catch in time
The drop discharge that obtains, prolonging service life of filter elements, treating capacity requirement can be met on the basis of not increasing yard device, and is had
It is at low cost, compact-sized, save space, it is easy to disassemble the advantages that.
In an alternative embodiment, which, which can be used, any can provide the structure of tangential velocity, such as axis
To guide vane, referring to fig. 4, which may include: outer barrel, rotating middle part axis and is arranged in the rotating middle part
Blade on axis, rotating middle part axis drive the blade to rotate.
Certainly, other, which can also be used, in the guiding device in the embodiment of the present invention can produce the structure of eddy flow, can be metal
Or the nonmetallic materials such as resin, for providing tangential velocity, air-flow obtains centrifugal force by guiding device, wherein the drop carried secretly
It is thrown on the wall surface of flow-guiding channel 2 under centrifugal inertial force effect.Suitable for entrance gas velocity 2-25m/s, preferred value 4m/s.
Guide vane parameter mainly includes disengaging bicker α, β, blade height, blade keep alive length and the number of blade of blade, can be according to import
Speed makes optimization design.
It is worth noting that the position of guiding device 1 and quantity can be adjusted according to actual condition demand, such as can edge
Flow-guiding channel increases guiding device quantity, and additional tangential velocity is provided for air-flow.
Flow-guiding channel 2 can provide certain separated space and air-flow made first to move upward to filter core top for arbitrary shape
Portion is moved into the diversion pipe of filter core coalescing layer 4 still further below, and 2 length of flow-guiding channel can be adjusted according to operating condition difference, generally
For 300-800mm, preferably 600-700mm, in addition, the flow-guiding channel 2 can be the nonmetallic materials such as metal or resin, for providing
Certain separated space traps the drop of different-grain diameter in the height direction, and big drop is separated in relatively short distance, droplet warp
It is moved at wall surface after crossing certain distance, under being arranged in time by isolated drop along wall surface.
In conjunction with Fig. 5 and Fig. 6, in an alternative embodiment, which is hollow cylinder structure, and the water conservancy diversion
2 wall surface of channel is uniformly provided with multiple arcs sump pit 21, preferably 12~24, including but not limited to this.It is thrown in flow-guiding channel 2
Drop on wall surface is moved under the action of swirling eddy in the arc sump pit 21, and gas then continues in flow-guiding channel inward turning
Turn to rise, under drop is arranged in time in arc sump pit, due to the shape and the cross sectional shape phase of the flow-guiding channel 2 of air inlet
Match, so the gap between air inlet and guiding device is discharged along the drop that arc sump pit flows down with form of liquid film,
The reentrainment for reducing drop, improves separative efficiency.Wherein, the dimensional parameters of arc sump pit 21 can be according to air-flow side
It is optimized to, speed and size droplet diameter etc..
In an alternative embodiment, multiple R-joinings 23 are uniformly provided in 2 side of flow-guiding channel (or wall surface), preferably
4-12 R-joining, including but not limited to this, which is vertically arranged, and the width of R-joining can be between 1-5mm, which is led by this
The angle of the flow direction of inclined direction and the swirling eddy on the outside of circulation road inwardly less than 90 degree, i.e., with airflow direction phase
Instead, drop is moved forward under effect of inertia by R-joining 23, and fraction is discharged from gap 23, due to R-joining 23
The circulation area of gas is increased, therefore reduces the pressure drop of flow-guiding channel 2, another effect of R-joining 23 is so that water conservancy diversion is logical
2 annular space air flow method of road is more uniform.
The gas output of R-joining 23 is between 12%-20%, and under identical operating conditions, the guiding device with R-joining is than general
Admittance stream straight tube pressure drop at least reduces by 21%.
Wherein, the dimensional parameters of R-joining 23 can be optimized according to airflow direction, speed and size droplet diameter etc..
In an alternative embodiment, referring to Fig. 1, the upper end of flow-guiding channel 2 is equipped with horn mouth 22, spreads for water conservancy diversion
Swirling eddy in flow-guiding channel 2, so that after the swirling eddy touches filter core upper end cover, it can be preferably logical into water conservancy diversion
Space between road 2 and filter core inner frame 3.
Specifically, swirling eddy rotates upwards through flow-guiding channel 2, by the outside flaring of horn mouth water conservancy diversion, reaches filter core top
It is rotated down flowing in 2 exterior space of flow-guiding channel (space i.e. between flow-guiding channel 2 and filter core inner frame 3) behind end, and is had
Portion gas radially outward flows out filter core inner frame 3.
Fig. 7 a is that the embodiment of the present invention has a kind of part of filter core inner frame in the gas-liquid Coalescence filter core of pre-separation function
Structural schematic diagram.As shown in Figure 7a, which is provided with through-hole 31, and the exit setting one of the through-hole 31 is led
Chute 34 forms tortuous flow path structure.Filter core inner frame 3 and 2 Proper Match of guiding device 1 and flow-guiding channel, air-flow is by leading
After flowing device 1 and flow-guiding channel 2, it is rotated down into 2 annular space of flow-guiding channel, portion gas is expanded by the through-hole 31
Being dissipated to filter core coalescing layer 4 under the action of inertia, can isolate drop when gas passes through tortuous flow path structure, further real
Existing gas-liquid separation.
In an alternative embodiment, the inner wall of filter core inner frame 3 is equipped with sump pit 33, and the swirling eddy is in institute
When stating the Space Rotating flowing between filter core inner frame 3 and the flow-guiding channel 2, the drop isolated under the influence of centrifugal force
Along the discharge downwards of sump pit 33.Wherein, which can be understood as being arranged on 3 inner wall of filter core inner frame perpendicular
Straight groove.
Further, slanting baffle hook 32 is set above 3 inner wall of filter core inner frame, through-hole 31, for what is prevented separation
Drop entrainment enters filter core coalescing layer 4, can also play the role of guide functions, the drop and complications of downward eddy flow centrifugal force separation
The drop of flow passage structure effect of inertia separation is along 3 inner wall of slanting baffle hook 32 and filter core inner frame, in the effect of downdraught
It is lower to be trapped by sump pit 33, under the action of downdraught, arranged down with form of liquid film.Wherein, the shape of the slanting baffle hook 32 can
Think the structure formed after being bent upwards the edge of slanting baffle.
Certainly, 3 surface texture of filter core inner frame can reach inertial separation for cooperation airflow direction, prevent from carrying secretly and make drain
Direction arbitrary structures identical with airflow direction, including but not limited to above structure.
Fig. 7 b is the plan view of filter core inner frame in Fig. 7 a.As shown in Figure 7b, the through-hole 31 and slanting baffle hook 32 are along air-flow
Direction is obliquely installed.
It is worth noting that the tilt angle of through-hole 31 and slanting baffle hook 32 according to air velocity and airflow direction and
It is fixed, it can be 5-175 °, preferred value is 15-30 ° and 150-165 °.Tortuous flow path structural parameters can be according to air velocity, entrainment
Size droplet diameter and stokes number optimize.
Specifically, by the way that through-hole 31 and slanting baffle hook 32 to be obliquely installed along airflow direction, on the one hand gas is facilitated to pass through
The through-hole 31 diffuses to filter core coalescing layer, on the other hand, is conducive to liquid film and is collected to the row along slanting baffle hook under airflow function
Liquid bath 33, and then flowed down along sump pit 33.
Fig. 8 is the part that the embodiment of the present invention has another filter core inner frame in the gas-liquid Coalescence filter core of pre-separation function
Structural schematic diagram.As shown in figure 8, the inner wall of the filter core inner frame 3 is equipped with arcuate structure, it is provided in the arcuate structure two sides
Through-hole 31, the exit setting return guide trough of the through-hole 31 is at tortuous flow path structure.Filter core inner frame 3 and guiding device 1 and
2 Proper Match of flow-guiding channel is rotated down after air-flow is by guiding device 1 and flow-guiding channel 2 into 2 external rings of flow-guiding channel
Shape space, portion gas diffuse to filter core coalescing layer 4 by the through-hole 31, and gas passes through arcuate structure and tortuous flow path structure
When, under inertial collision effect, drop can be isolated, gas-liquid separation is further realized, the gas after separation is then by the through-hole
31 diffuse to filter core coalescing layer 4.
The arc bottom end of the arcuate structure forms sump pit 33.The liquid isolated by arcuate structure and tortuous flow path structure
Drop moves to sump pit 33 under the action of air-flow, and is discharged downwards along sump pit 33.
Further, slanting baffle hook 32 is set above 3 inner wall of filter core inner frame, through-hole 31, for what is prevented separation
Drop entrainment enters filter core coalescing layer 4, can also play the role of guide functions, the drop and complications of downward eddy flow centrifugal force separation
The drop of flow passage structure effect of inertia separation is along 3 inner wall of slanting baffle hook 32 and filter core inner frame, in the effect of downdraught
It is lower to be trapped by sump pit 33, under the action of downdraught, arranged down with form of liquid film.Wherein, the shape of the slanting baffle hook 32 can
Think the structure formed after being bent upwards the edge of slanting baffle.
It is worth noting that through-hole 31 and slanting baffle hook 32 can be obliquely installed along airflow direction, tilt angle is according to gas
It can be 5-175 °, preferred value is 15-30 ° and 150-165 ° depending on flow velocity degree and airflow direction.Tortuous flow path structural parameters
And the parameter of arcuate structure can be optimized according to air velocity, the size droplet diameter of entrainment and stokes number.
Specifically, by the way that through-hole 31 and slanting baffle hook 32 to be obliquely installed along airflow direction, on the one hand gas is facilitated to pass through
The through-hole 31 diffuses to filter core coalescing layer, on the other hand, is conducive to liquid film and is collected to the row along slanting baffle hook under airflow function
Liquid bath 33, and then flowed down along sump pit 33.
Certainly, it will be appreciated by persons skilled in the art that the tortuous flow path and surface texture of filter core inner frame 3 do not limit to
The structure described in case study on implementation can act on and can prevent reentrainment for that can reach inertial separation, accelerate quilt using airflow direction
The arbitrary structures under drop row are trapped, structural parameters can be adjusted according to actual condition demand.
Fig. 9 is that there are the partial structurtes of the outer skeleton of filter core in the gas-liquid Coalescence filter core of pre-separation function of the embodiment of the present invention to show
It is intended to.As shown in figure 9, the outer skeleton 6 of the filter core is equipped with recirculation hole 60,6 inner wall recirculation hole of the outer skeleton of the filter core, 60 position
Equipped with diversion trench 61.Wherein, recirculation hole 60 and diversion trench 61, which can be, arbitrarily can make air-flow move downwardly into diversion trench 61 simultaneously
The structure flowed outwardly.
The outside of filter core drain layers 5 is arranged in the outer skeleton 6 of filter core, i.e. air-flow is to transport downwards when through filter core drain layers 5
Dynamic, the drop trapped through filter core coalescing layer 4 moves to filter core drain layers 5, airflow direction and drain direction under airflow function
It is identical, and under downdraught effect, discharge downwards in time, therefore filter core pressure drop can be reduced, reentrainment is prevented, filter is extended
Core service life.
Certainly, it will be appreciated by persons skilled in the art that the flow-guiding channel on outer 6 surface of skeleton of filter core is not limited to implement
Structure described in case can change the direction for passing through drain layers air-flow for that can reach, under promoting liquid to arrange in drain layers and prevent
The arbitrary structures of reentrainment.
It is understood that with the drop under form of liquid film row, when reaching lower cover, the logical of filter core inner frame can be passed through
Hole 31 is passed to filter core coalescing layer, and then flow to filter core drain layers, and the drop accumulation of filter core drain layers lower part is to a certain extent
Afterwards, filter core can be flowed out by the recirculation hole and diversion trench 61 of 6 lower part of skeleton outside filter core.
Gas-liquid Coalescence filter core provided in an embodiment of the present invention, guiding device, flow-guiding channel, filter core coalescing layer, filter core row
The outer skeleton of liquid layer, filter core inner frame, filter core and its surface texture arrangement, are unified entirety, mutually promote.Each structural parameters
It is appropriate to select, and by matching each other between each structure, reaches expected separating effect.
In addition, the gas-liquid Coalescence filter core provided in the embodiment of the present invention, filter core outer skeleton 6, guiding device 1, flow-guiding channel
2, it can be removable between filter core inner frame, can be used singly or in combination according to operating condition.Connection type can be dismounting
Hole and bolt fastening combination etc..
In the following, illustrating the present invention the course of work of the gas-liquid Coalescence filter core of embodiment offer:
At least three-level separation process is internally integrated in gas-liquid Coalescence filter core:
First order separation is that eddy flow is generated inside filter core by the way that guiding device is arranged at air inlet, logical in conjunction with water conservancy diversion
Road gives the drop of entrainment certain separated space, generates drop under the action of the centrifugal force, and big drop is thrown to flow-guiding channel first
On wall surface, droplet is thrown on wall surface after certain separated space, under being arranged by the arc sump pit on wall surface, and in wall
R-joining is provided on face reduces its pressure drop.Wherein, first order separation relies primarily on the drop that centrifugal force removes 5 μm of partial size or more.
Second level separation is to carry out inertial separation by the tortuous flow path structure on filter core inner frame surface, and pass through upper level
Change of the flow-guiding channel to airflow direction, so that flow rotation flows downwardly through inner frame surface, direction is identical as drain direction, interior
The through hole on skeleton surface is provided with slanting baffle hook, coalesces first is that inner frame surface liquid film is prevented to be less easily entrained by into filter core
Layer, second is that baffle hook tilt angle is designed according to airflow direction, the drop under intercepting is moved under airflow function along slanting baffle hook
Into sump pit, and in the case where being arranged in time under downdraught acts on.Wherein, second level separation relies primarily on being total to for inertia and centrifugal force
Same-action removes 3 μm of partial size or more of drop.
Third level separation is remaining droplet to be agglomerated into big drop by filter core coalescing layer, and transport under airflow function
Filter core drain layers are moved, and the flow-guiding channel for being located at the outer skeleton inner surface setting of the subsequent filter core of filter core drain layers plays air-flow
Downward guide functions, air-flow airflow direction in the drain layers by mutually leaning on skeleton outside filter core is downward, in downdraught
Under effect, the liquid being captured can be in time under drain layers row.Third level separation relies primarily on filter core coalescing layer and is separated by filtration grain
0.3 μm of diameter or more of drop.
Gas-liquid Coalescence filter core provided in an embodiment of the present invention effectively increases separation effect by least three-level separation process
Fruit.In addition, every level-one, which is separated by filtration, is all combined with corresponding drain promotion method, airflow direction and drain are made by flow-guiding channel
Direction is identical, promotes drain by airflow function, reduces reentrainment, and resistance increases caused by reducing because of blocking, extends filter core
Service life.
Select the gas-liquid Coalescence filter core provided in an embodiment of the present invention with pre-separation function and traditional gas-liquid Coalescence filter core
Compare experiment, experiment parameter is as follows: the apparent air velocity of filter core inner surface is 0.1m/s, using international test standards
Aerosol occurs for oil liquid specified in EN779 (dioctyl sebacate, DEHS), and droplet size range is 0.3- in entrance aerosol
20 μm, concentration 480-520mg/m3。
Experimental result is as follows: provided in an embodiment of the present invention to have pre- point with the increase of unit area accumulation of fluid amount
Although the more traditional Coalescence filter core initial drop of gas-liquid Coalescence filter core from function is larger, pressure drop increases process more slowly (ginseng
See Figure 10), filter core drain collecting amount is big compared with traditional Coalescence filter core, and the liquid being captured will not block filter core coalescing layer, runs the longevity
Life greatly improves；After running a period of time, the gas-liquid Coalescence filter core pressure drop provided in an embodiment of the present invention with pre-separation function
It is only 0.093kPa higher than traditional Coalescence filter core, to the stored counts efficiency high compared with conventional bowl 21% greater than 0.3 μm of particle (see figure
11).Gas-liquid Coalescence filter core provided in an embodiment of the present invention with pre-separation function is before slightly improving single-stage Coalescence filter core
It puts, hence it is evident that improve the processing liquid measure and efficiency of single-stage Coalescence filter core；And under the premise of meeting processing liquid measure requirement, relatively stand
Place is greatly reduced with multistage-combination filter separator pressure drop.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability
It include so that the process, method, commodity or the equipment that include a series of elements not only include those elements, but also to wrap
Include other elements that are not explicitly listed, or further include for this process, method, commodity or equipment intrinsic want
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described want
There is also other identical elements in the process, method of element, commodity or equipment.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for system reality
For applying example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to embodiment of the method
Part explanation.
The above description is only an example of the present application, is not intended to limit this application.For those skilled in the art
For, various changes and changes are possible in this application.All any modifications made within the spirit and principles of the present application are equal
Replacement, improvement etc., should be included within the scope of the claims of this application.
Claims (11)
1. a kind of gas-liquid Coalescence filter core with pre-separation function characterized by comprising filter core inner frame, filter core coalescing layer,
The outer skeleton of filter core drain layers, filter core, filter core upper end cover, filter core lower cover, guiding device and flow-guiding channel；
The outer skeleton of the filter core inner frame, filter core coalescing layer, filter core drain layers, filter core is successively arranged from inside to outside, and is column
Shape structure；
The upper end of skeleton outside the filter core is arranged in the filter core upper end cover, and skeleton outside the filter core is arranged in filter core lower cover
Lower end；
Air inlet is set on the filter core lower cover；
Guiding device is set at the air inlet, for making the gas into filter core generate swirling eddy；
The flow-guiding channel is set to inside the filter core inner frame, and connects the guiding device.
2. the gas-liquid Coalescence filter core according to claim 1 with pre-separation function, which is characterized in that the guiding device
Using axial diversion blade.
3. the gas-liquid Coalescence filter core according to claim 1 with pre-separation function, which is characterized in that the flow-guiding channel
Wall surface is equipped with arc sump pit, and the gas isolates drop under the influence of centrifugal force, and the drop is in the swirling eddy
Under the action of move to the arc sump pit, be discharged downwards along the arc sump pit.
4. the gas-liquid Coalescence filter core according to claim 1 with pre-separation function, which is characterized in that the flow-guiding channel
Side is equipped with R-joining, the flowing side of inclined direction and the swirling eddy of the R-joining by the flow-guiding channel outside inwardly
To angle less than 90 degree.
5. the gas-liquid Coalescence filter core according to claim 1 with pre-separation function, which is characterized in that the flow-guiding channel
Upper end is equipped with horn mouth, spreads the swirling eddy for water conservancy diversion.
6. the gas-liquid Coalescence filter core according to claim 1 with pre-separation function, which is characterized in that the filter core in-seam
Frame is provided with through-hole, and the first diversion trench is arranged in the exit of the through-hole.
7. the gas-liquid Coalescence filter core according to claim 6 with pre-separation function, which is characterized in that the through-hole is along gas
Stream direction is obliquely installed.
8. the gas-liquid Coalescence filter core according to claim 6 with pre-separation function, which is characterized in that the filter core in-seam
The inner wall of frame is equipped with sump pit, Space Rotating of the swirling eddy between the filter core inner frame and the flow-guiding channel
When flowing, the drop isolated under the influence of centrifugal force is discharged downwards along the sump pit.
9. the gas-liquid Coalescence filter core according to claim 1 with pre-separation function, which is characterized in that the filter core in-seam
The inner wall of frame is equipped with arcuate structure, is provided with through-hole in the arcuate structure two sides, the exit setting second of the through-hole is led
Chute.
10. according to the described in any item gas-liquid Coalescence filter cores with pre-separation function of claim 6 or 9, which is characterized in that
Slanting baffle hook is set above the filter core inner frame inner wall, through-hole.
11. gas-liquid Coalescence filter core according to claim 1, which is characterized in that the outer skeleton of the filter core is equipped with recirculation hole,
The filter core outer skeleton inner wall circulation hole site is equipped with third diversion trench.
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| CN109847490A (en) * | 2019-03-20 | 2019-06-07 | 中国石油大学(北京) | A kind of rigidity gas-liquid Coalescence filter core, preparation method and device |
| CN110420517A (en) * | 2019-08-13 | 2019-11-08 | 中国石油大学(北京) | Coalescence filter core structure and filter device |
| CN110917749A (en) * | 2020-01-02 | 2020-03-27 | 中国石油大学(北京) | Gas-liquid coalescence filter core and application and filter equipment who contains it |
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| CN115253464B (en) * | 2022-07-28 | 2024-03-05 | 江苏美亚科泽过滤技术有限公司 | Cross-flow type water purification filter element |
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