CN102716819A - Variable-section multiple-blade deflector type inner cone separator - Google Patents
Variable-section multiple-blade deflector type inner cone separator Download PDFInfo
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- CN102716819A CN102716819A CN2012101964927A CN201210196492A CN102716819A CN 102716819 A CN102716819 A CN 102716819A CN 2012101964927 A CN2012101964927 A CN 2012101964927A CN 201210196492 A CN201210196492 A CN 201210196492A CN 102716819 A CN102716819 A CN 102716819A
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Abstract
The invention relates to a variable-section multiple-blade deflector type inner cone separator which mainly solves the problem that the existing hydrocyclone is poor in fine oil drop removal effect. The variable-section multiple-blade deflector type inner cone separator is characterized in that a deflector is arranged in a steady-flow guide cavity, a steady-flow guide cone is fixed at the upper end of the deflector, and a conical surface adopts an arc curve connection for smooth transition; the deflector is formed by connecting at least three deflector blades with a central shaft, and each deflector vane is of a variable helical angle structure; the large-diameter end of the steady-flow guide cone is coaxially connected with the central shaft of the deflector; the inner bottom surface of a cyclone separation cavity is sealed, an inner cone frustum with a built-in overflow outlet pipe is fixed at the center of the inner bottom surface, a tangential outlet is arranged on the side wall of the upper part of the bottom surface and connected with a bottom flow tangential outlet pipe; and a liquid cyclone direction allowed by the bottom flow tangential outlet pipe is consistent with the liquid cyclone direction formed by the deflector. The separator has the advantages of high fine oil drop separation efficiency, can be used for gas-liquid separation and oil-water separation as well as solid-liquid separation.
Description
Technical field:
Patent application of the present invention relates to a kind of two cyclone separation devices of being separated that are applied to be used in the fields such as oil, chemical industry, environmental protection to realize.
Background technology:
At present, the fast separating process that is used for two-phase (is that example describes with the profit two-phase) mainly contains rotational flow separation, air supporting choosing, filtration and separates with film etc.Cyclonic separation has advantages such as equipment volume is little, but limited in one's ability for the removal of tiny oil droplet; Air supporting selects the scope that then adapts to the oil concentration variation less; Filtration can realize the separation of profit two phases preferably, but needs frequent backwash to guarantee the long-term stability operation of equipment for high oil-polluted water; The membrane separation plant cost is higher, requires again comparatively strict to ambient condition.Wherein be applied to the hydrocyclone in the cyclonic separation method, its separation principle is to utilize the density contrast between medium and centrifugalize, and density contrast is big more, and the particle diameter of decentralized photo is big more, and separating effect is relatively just good more.This kind separator produces as the solid-liquid separation equipment the earliest; At present also obtained certain application in China as a kind of separation equipment; To this; Northeast Petroleum University has successively applied for multinomial correlation technique patent, like ZL98211681.0, ZL01279933.5, ZL01277425.1, ZL200620021175.1, ZL200920099307.6,201110088801.4,201010556583.8 and 201110089218.5 etc.But after these existing devices were applied in the water-treatment technology field, coming to light gradually also existed practical problems such as tiny oil droplet poor removal effect.Especially in oil field development gets into after the high moisture productive life; Constantly enlarge along with gathering the scale of driving, the polymer-bearing waste-water produced quantity increases year by year, and polymer-bearing waste-water viscosity is big; The settling section oil removal efficiency is low in the surface technology of oil field; Thereby increased the load of fillter section, caused filtrate seriously polluted, the filtering water variation.At present, increasing water drive sewage plant has also been seen polymer, causes the water quality treatment variation, is difficult to satisfy waterflooding requirement.Can predict the water quality situation will be severe more along with the ternary composite driving oil tech applies while.Therefore, how to improve the separating effect of separator and effectively improve water quality and become the technical problem that the technical staff needs solution badly.
Summary of the invention:
The technical problem of mentioning in order to solve in the background technology; The present invention provides tapered separator in a kind of variable cross-section multiple-blade flow-guiding type; This kind separator has outstanding advantages such as tiny oil droplet separative efficiency are high, equipment volume is little, axially become a mandarin, effluent in the same way; Can be used for gas-liquid separation, water-oil separating, also can be used for Separation of Solid and Liquid.
Technical scheme of the present invention is: tapered separator in this kind variable cross-section multiple-blade flow-guiding type comprises the entrance cavity, current stabilization directed cavity and the cyclonic separation chamber that connect successively.
Wherein, A baffle is arranged in the current stabilization directed cavity; Said baffle is fixed on the junction of entrance cavity and current stabilization directed cavity; In the upper end of baffle, the space that is positioned at entrance cavity is fixed with an inverted current stabilization guiding and bores, and it is smooth excessive that the conical surface of said current stabilization guiding awl adopts circular curve to connect; Said baffle by at least 3 guide vanes with constitute after central shaft is connected, said guide vane is for becoming the lead angle structure; The bigger diameter end of said current stabilization guiding awl is done coaxial the connection with the central shaft of said baffle;
The inner bottom surface sealing in said cyclonic separation chamber is fixed with an interior frustum that has built-in overflow outlet in the center of inner bottom surface, on the sidewall on top, said bottom surface, has a tangential outlet, and is connected with a underflow tangential outlet; The liquid eddy flow direction that said underflow tangential outlet allows is identical with the liquid eddy flow direction that said baffle forms.
In addition, the optimal way on above scheme basis is: the cone element of said current stabilization guiding awl is divided into arc section, following arc section and straightway by two sections circular arc lines and one section rectilinear(-al), and three tangent its whole smooth that make of line are excessive.
In addition, can also make said guide vane is variable section structure, and promptly guide vane is the thin and structure of thick middle in two ends, and promptly the guide vane interior thickness is constant, and its two ends attenuation and be retracted to gradually and be the straight line state.The purpose of the thin design in two ends is to make flow when contacting guide vane and leaving guide vane, reduce eddy current to exist, and steady flow condition cuts down the consumption of energy; The purpose of design of thick middle is to strengthen the guide vane strength and stiffness, guarantees guide vane service life.
Simultaneously; Can also make the directrix employing ellipse of said guide vane and the form that circular arc line combines; Adopt ellipse can make the blade exit prescription to level; Thereby make axial flow velocity change the tangential flow velocity into to greatest extent, the circular curve of protrusion is for fear of the excessive bump of established slipstream between adjacent blades in the employing, can reduce impact effects and make fluid get into the eddy flow chamber smoothly.
The present invention has following beneficial effect: be example with water-oil separating; This kind of separator is compared with traditional two hydrocyclones that are separated; At first owing to be designed with a current stabilization guiding awl in the separator top center, the existence of this current stabilization guiding awl can effectively reduce down to the existence of eliminating eddy current, thereby reduces the cyclone pressure loss; Improve the fluidised form of inlet flow simultaneously, the treatment effect that assurance two is separated.Secondly, the guide vane that links to each other with current stabilization guiding awl adopts multiple-blade design, can form the multiple entry runner, can the enhanced flow field stability, be beneficial to cyclonic separation; In addition, this guide vane has adopted variable cross-section, has become the directrix form that lift angle spiral and ellipse and circular arc line combine, and makes flow flow into vertically, drops near 0 degree leaving guide vane place lift angle, thereby forms tangential rotation flow; In addition; This kind of separator is bored section through having made up an inner frustum and in the cyclonic separation chamber, formed a variable cross-section annular space, promptly adopts the design form of inner cone; Under the situation of outside wall surface size constancy; Form variable cross-section annular space inner chamber through the inner cone design, realize the balance rotating velocity attenuation thus, keep rotating energy; The design of inner conical surface also can promote the separation and the coalescence of oil droplet, and the formation larger oil droplet is also assembled upwards, under the drive of rotation blending agent, in frustum in the centre bore entering of interior frustum, is discharged by the overflow outlet downwards.Meanwhile, water is got rid of to the eddy flow wall, moves downward, discharge by the outlet of underflow tangential, thus the cyclonic separation of realization profit two phases.The design of tangential, underflow square-section outlet can prolong effective segregation section, improves separative efficiency, reduces the length of cyclone separator.This kind of separator in the exit owing to adopted the design of effluenting in the same way; Exist when can avoid the inner upper and lower eddy flow of cyclone to a certain extent; On main body, have only swirling motion to exist like this to a direction of lower part outlet in cyclone inside; Make turbulent flow reduce, the flow field is stable, and separative efficiency improves.Put it briefly; This kind of separator is to be subsidized and the up-to-date scientific and technological achievement of completion by national 863 Program problem (2012AA061303); Have that separative efficiency height, equipment volume are little, outstanding advantage such as axially become a mandarin, effluent in the same way; Can be used for gas-liquid separation, water-oil separating, also can be used for Separation of Solid and Liquid.The appearance of this technical scheme will be played positive facilitation to the raising and further the applying of hydrocyclone of isolation technics.
Description of drawings:
Fig. 1 is a surface structure sketch map of the present invention.
Fig. 2 is a structural representation of showing internal structure of the present invention.
Fig. 3 is a structural representation of showing baffle according to the invention and current stabilization guiding wimble structure.
Fig. 4 is the structural representation one of guide vane in the preferred embodiment for the present invention.
Fig. 5 is the structural representation two of guide vane in the preferred embodiment for the present invention.
Fig. 6 is the structural representation three of guide vane in the preferred embodiment for the present invention.
1-inlet tube among the figure, 2-current stabilization guiding awl, 3-baffle, 4-cyclonic separation chamber, frustum in the 5-; 6-overflow outlet, 7-underflow tangential outlet, 8-entrance cavity, 9-current stabilization directed cavity; 11-guide vane upper end, 12-guide vane lower end, 13-guide vane, 14-central shaft.
The specific embodiment:
Below in conjunction with accompanying drawing the present invention is described further:
Combine Fig. 2, shown in Figure 3 by Fig. 1, tapered separator in this kind variable cross-section multiple-blade flow-guiding type comprises the entrance cavity 8, current stabilization directed cavity 9 and the cyclonic separation chamber 4 that connect successively, and above-mentioned cavity is axially symmetric structure.
Wherein, a baffle 3 is arranged in current stabilization directed cavity 9, said baffle 3 by at least 3 guide vanes 13 with constitute after central shaft 14 is connected.The structure of baffle is as shown in Figure 3, and what provide among this figure is 4 blades, when practical application, and can be more.Said guide vane 13 is for becoming the lead angle structure; The upper end of said baffle 3 is fixed on the junction of entrance cavity 8 and current stabilization directed cavity 9; Upper end at baffle 3; The space that is positioned at entrance cavity 8 is fixed with an inverted current stabilization guiding and bores 2, and it is smooth excessive that the conical surface of said current stabilization guiding awl 2 adopts circular curve to connect; The bigger diameter end of said current stabilization guiding awl 2 is done coaxial the connection with the central shaft of said baffle 3.For current stabilization guiding awl, consider actual processing, the most advanced and sophisticated place of the vertex of a cone can do and lead the circle processing.
In addition, the sealing of the inner bottom surface in said cyclonic separation chamber 4, the center of passing said inner bottom surface is fixed with an overflow outlet 6, on the sidewall on top, said bottom surface, has a tangential outlet, and is connected with a underflow tangential outlet 7;
The liquid eddy flow direction that said underflow tangential outlet 7 allows is identical with the liquid eddy flow direction that said baffle 3 forms.
Lead angle in the described change lead angle of the preamble structure is the angle of inclination of blade directrix in plane coordinate system, and promptly the guide vane direction in the face of the axial flow of inlet place is axially, makes flow flow into vertically; After flow got into, the guide vane lead angle reduced gradually, until dropping near 0 degree leaving guide vane place lift angle, to form multi beam tangential rotation flow.Like this, just can form the multiple entry runner, improve the symmetry of rotation flow in the separator, the enhanced flow field stability is beneficial to cyclonic separation.
On above scheme basis, obtain following preferred embodiment.
Preferred embodiment 1, the cone element of promptly said current stabilization guiding awl 2 is divided into arc section, following arc section and straightway by two sections circular arc lines and one section rectilinear(-al), and three tangent its whole smooth that make of line are excessive.
Preferred embodiment 2, as shown in Figure 6, said guide vane is a variable section structure, and promptly guide vane is the thin and structure of thick middle in two ends, and promptly the guide vane interior thickness is constant, and its two ends attenuation and be retracted to gradually and be the straight line state.Dotted line is the outer contour of vane thickness, and the solid line in the middle of the dotted line is the directrix of blade, and the blade interior thickness does not become B, and blade inlet place outline line is retracted to together, and contraction section length is S
1, blade exit place outline line is retracted to together, and contraction section length is S
2, two sections contraction sections and interlude outer contour tangent smooth excessively.The purpose of the thin design in two ends is to make flow when contacting guide vane and leaving guide vane, reduce eddy current to exist, and steady flow condition cuts down the consumption of energy; The purpose of design of thick middle is to strengthen the guide vane strength and stiffness, guarantees guide vane service life.
In the specific implementation, guide vane is according to following mode construction:
Like Fig. 4, shown in Figure 5; The major parameter of blade directrix design comprises blade directrix cornerite φ, blade straightway wrap angle sigma; Like the straightway wrap angle sigma among Fig. 5, blade directrix angle of outlet β, the blade directrix angle of outlet is the high h of inclination angle, blade of blade directrix straightway and the radius r of the inside and outside directrix of blade
1, r
2, the directrix radius is the cylindrical radius on the face of cylinder, directrix place.After confirming, above parameter just can calculate the inside and outside directrix equation of guide vane.
If φ is a subtended angle of blade, α is the straightway cornerite, β
2, β
1Be respectively the inside and outside directrix angle of outlet of blade, the directrix radius is the face of cylinder, directrix place, and the cylindrical radius on the face of cylinder at directrix place is wrapped arc length and is the pairing arc length of cornerite, like pairing subtended angle of blade φ among Fig. 5, r as shown in Figure 5
1, r
2Be respectively the interior directrix radius of blade and the outer directrix radius of blade.Then outer directrix leaf packet arc length l
1=φ r
1π/180, the outer directrix basic segment bag arc length m of blade
1=(the r of φ-α)
1π/180, the outer directrix straightway bag arc length n of blade
1=α r
1π/180.Then the general expression of directrix basic segment elliptic equation is in the plane coordinate system China and foreign countries:
(x a)
2/a
2+y
2/b
2=1（0<x<m）
For the outer directrix of blade, directrix exit angle β outside blade
1With the high h of blade fixing after, just can obtain the coordinate of the intersection point A of basic segment and straightway:
（(φ-α)r
1π/180，h-αr
1πtanβ
1/180）
Just can calculate the equation of straightway by the A point coordinates:
y
1＝k
1x+c(m
1<x<l
1)
The slope k of formula cathetus
1=tan β
1, c=h-l
1Tan β
1
Thereby calculate the basic segment equation:
y
1＝b((2a-x)x)
1/2/a，(0<x<m
1)
A=(m in the formula
1 2Tan β
1-(h-n
1Tan β
1) m
1)/(2l
1Tan β
1-n
1Tan β
1-h)
b=a(h-n
1tanβ
1)/((2a-m
1)m
1)
1/2
Because the pairing cornerite of inside and outside directrix is equal, then: l
1/ l
2=r
1/ r
2, inner outlet angle β
2With the bicker β that goes out
1Relation be: tan β
2=(r
1/ r
2) tan β
1, through above interior directrix equation and the relation between the outer directrix equation, directrix equation in just can asking for by the outer directrix equation in the plane coordinate system.
The partial parameters implication that relates in the directrix computational process is following:
The inside and outside directrix cornerite of φ-blade; The inside and outside directrix cathetus section cornerite of α-blade; β
1The outer directrix angle of outlet of-blade; β
2The directrix angle of outlet in the-blade; H-blade directrix height; r
2, r
1-be respectively the radius of the inside and outside directrix of blade; l
2, l
1-be respectively the inside and outside directrix bag arc length of blade; m
2, m
1-be respectively the inside and outside directrix basic segment bag arc length of blade; n
2, n
1-be respectively the inside and outside directrix straightway bag arc length of blade.
On this basis, if the diameter of inlet tube is defined as D
1, the height of current stabilization guiding awl is defined as H, and the height in cyclonic separation chamber is defined as H
1, the height of interior frustum is defined as H
2, underflow tangential outlet diameter is D
o, then best according to the structure implementation result of following size relationship structure:
The scope that is exit angle β is: 0 degree<β<50 degree; The scope of the inside and outside directrix cornerite φ of blade is: 80 degree<β<360 degree; The scope of the inside and outside directrix cathetus section wrap angle sigma of blade is: 10 degree<β<120 degree; Blade directrix height h=(0.5～4) D
1Vane thickness B=(0.08～0.12) D
1S
1=(0.1～0.4) D
1S
2=(0.1～0.4) D
1Directrix radius r in the blade
2=(0.2～0.8) D
1H=(0.8～2) D
1D
o=(0.15～0.3) D
1H
1=(6～10) D
1H
2=(2～5) D
1Underflow outlet square-section length=(0.2～0.4) D
1Underflow outlet square-section is wide=(0.1～0.2) D
1
The concrete course of work of this kind of separator is following:
This kind of separator utilizes two kinds of immiscible liquid density of medium differences and centrifugalizes.Move from the top down after inlet tube 1 entering of oil-water mixture by entrance cavity 8, move to current stabilization guiding awl 2 places, link to each other with the central shaft of baffle because current stabilization leads to bore; It is smooth excessive that its conical surface adopts circular curve to connect; Therefore can effectively reduce so that eliminate the existence of eddy current, reduce the cyclone pressure loss, improve the fluidised form of inlet flow simultaneously; The treatment effect that assurance two is separated; Current stabilization guiding awl also can realize the flow that gets into cyclone is vertically played the effect of guiding in addition, and it is got in the gap of any two blades naturally, also can reduce energy loss to a certain extent.Oil-water mixture forms after through the multiple entry runner that is formed by guide vane and rotates flow and enter into cyclonic separation chamber 4, behind this chamber of eddy flow entering of generation, and balance rotating velocity attenuation under the effect of interior frustum; Keep rotating energy; And the separation and the coalescence that promote oil droplet, form larger oil droplet and gathering upwards, under the drive of rotation blending agent; Get in the interior frustum by interior frustum centre bore, discharge by the overflow outlet downwards.Meanwhile, water is got rid of to the eddy flow wall, moves downward, discharge by the outlet of underflow tangential, thus the cyclonic separation of realization profit two phases.The design of tangential, underflow square-section outlet can prolong effective segregation section, improves separative efficiency, reduces the length of cyclone separator.This design is owing to adopted the design of effluenting in the same way; Exist when can avoid the inner upper and lower eddy flow of cyclone to a certain extent, on main body, have only swirling motion to exist like this in cyclone inside, make turbulent flow reduce to a direction of lower part outlet; The flow field is stable, and separative efficiency improves.
Claims (4)
1. tapered separator in the variable cross-section multiple-blade flow-guiding type comprises the entrance cavity (8) that connects successively, current stabilization directed cavity (9) and cyclonic separation chamber (4);
Wherein, A baffle (3) is arranged in current stabilization directed cavity (9); Said baffle (3) is fixed on the junction of entrance cavity (8) and current stabilization directed cavity (9); Upper end in baffle (3), the space that is positioned at entrance cavity (8) is fixed with an inverted current stabilization guiding and bores (2), and it is smooth excessive that the conical surface of said current stabilization guiding awl (2) adopts circular curve to connect; Said baffle (3) is connected the back by at least 3 guide vanes (13) and constitutes with central shaft (14), said guide vane (13) is for becoming the lead angle structure; The bigger diameter end of said current stabilization guiding awl (2) is done coaxial the connection with the central shaft of said baffle (3);
The inner bottom surface sealing in said cyclonic separation chamber (4); Be fixed with an interior frustum (5) that has built-in overflow outlet (6) in the center of inner bottom surface; On the sidewall on top, said bottom surface, have a tangential outlet, and be connected with a underflow tangential outlet (7);
The liquid eddy flow direction that said underflow tangential outlet (7) allows is identical with the liquid eddy flow direction that said baffle (3) forms.
2. tapered separator in a kind of variable cross-section multiple-blade flow-guiding type according to claim 1; It is characterized in that: the cone element of said current stabilization guiding awl (2) is by two sections circular arc lines and one section rectilinear(-al); Be divided into arc section, following arc section and straightway, three tangent its whole smooth that make of line are excessive.
3. tapered separator in a kind of variable cross-section multiple-blade flow-guiding type according to claim 1 and 2; It is characterized in that: said guide vane is a variable section structure; Be that guide vane is the thin and structure of thick middle in two ends; Be that the guide vane interior thickness is constant, and its two ends attenuation and be retracted to gradually and be the straight line state.
4. tapered separator in a kind of variable cross-section multiple-blade flow-guiding type according to claim 3 is characterized in that: the form that the directrix of said guide vane (13) adopts ellipse and circular arc line to combine.
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| CN104492109A (en) * | 2014-12-30 | 2015-04-08 | 南通三圣石墨设备科技股份有限公司 | Efficient gas-liquid separator of evaporator |
| CN106693447A (en) * | 2015-11-18 | 2017-05-24 | 中国科学院力学研究所 | Equidirectional cyclone separator of two kinds of media with different densities |
| CN108561116A (en) * | 2018-03-28 | 2018-09-21 | 东北石油大学 | The adaptive Liquid liquid Separation device of trestle type downhole flow |
| CN108998247A (en) * | 2018-09-25 | 2018-12-14 | 江西中医药大学 | A kind of volatile oil extracting system and essential oil of traditional Chinese medicine production technology |
| CN110285436A (en) * | 2019-06-26 | 2019-09-27 | 厦门理工学院 | A kind of variable cross section guiding device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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|---|---|
| CN102716819B (en) | 2013-12-11 |
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