CN105765193A - Exhaust gas flow mixer - Google Patents

Exhaust gas flow mixer Download PDF

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Publication number
CN105765193A
CN105765193A CN201480064128.2A CN201480064128A CN105765193A CN 105765193 A CN105765193 A CN 105765193A CN 201480064128 A CN201480064128 A CN 201480064128A CN 105765193 A CN105765193 A CN 105765193A
Authority
CN
China
Prior art keywords
blender
hybrid element
housing
hybrid
apertures
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201480064128.2A
Other languages
Chinese (zh)
Other versions
CN105765193B (en
Inventor
马诺伊·K·桑帕斯
兰加恩·查克拉瓦蒂
詹姆斯·多尔蒂
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tenneco Automotive Operating Co Inc
Original Assignee
Tenneco Automotive Operating Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US14/089,822 external-priority patent/US9095827B2/en
Application filed by Tenneco Automotive Operating Co Inc filed Critical Tenneco Automotive Operating Co Inc
Publication of CN105765193A publication Critical patent/CN105765193A/en
Application granted granted Critical
Publication of CN105765193B publication Critical patent/CN105765193B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
    • B01F25/4315—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being deformed flat pieces of material
    • B01F25/43151—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being deformed flat pieces of material composed of consecutive sections of deformed flat pieces of material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/21—Mixing gases with liquids by introducing liquids into gaseous media
    • B01F23/213—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids
    • B01F23/2132—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids using nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
    • B01F25/3141—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit with additional mixing means other than injector mixers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
    • B01F25/4315—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being deformed flat pieces of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
    • B01F25/43197—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor characterised by the mounting of the baffles or obstructions
    • B01F25/431974—Support members, e.g. tubular collars, with projecting baffles fitted inside the mixing tube or adjacent to the inner wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/20—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a flow director or deflector
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Abstract

A mixer for mixing an exhaust flow with a fluid injected into an exhaust pipe includes a tubular housing having a reduced size center portion positioned between first and second ends. The housing includes circumferentially spaced apart apertures extending through the center portion. A first mixing element includes a first peripheral portion positioned within one of the apertures and a second peripheral portion positioned within another one of the apertures. A second mixing element includes third and fourth peripheral portions positioned within other apertures of the housing.

Description

Exhaust stream blender
Background of invention
1. technical field
The present invention relates to a kind of method using blender and relate to blender itself.
2. prior art
Known in the state of the art some single-stage blenders from most tight association.
In DE102006024778B3, describing a kind of blender, provide the wall construction for the guiding surface that flows for this blender, it has been substantially filled with the profile of housing and has thus resulted in relatively high dynamic pressure loss.This wall construction is made up of the wavy stripping of some layers being parallel to flow direction alignment.These single layers each transverse to flow direction extend and self ground be stacked into transverse to flow direction alignment.At this, the stripping in these single layers is stacked on the top of himself, and its mode is that the plurality of cell can each be flowed through in the flowing direction accordingly so that defining multiple cell between the stripping of adjacent layer.
On the ripple side of circle, also providing for, the ripple of stripping is designed with rectangle or trapezoidal form, as a result, it is possible to obtain for the profile of these individual unit lattice, these profiles are rectangles or hexagonal or have comb shapes.Stripping forms support member, defines the multiple flowing guiding surfaces in couples as mixing fin on this support member.For this purpose it is proposed, this support member alternately includes having the region of mixing fin and the coupled region not mixing fin so that a mixing fin extends into each cell.
In DE202006017848U1, describe a kind of device for carrying out mixing exhaust, wherein, caused aerofluxus to mix by being arranged to the fin unit that the fin directly mutually followed constitutes.These fin units be transverse to flow direction located adjacent one another and in the flowing direction each other before and after arrange.These fins are not connected to each other directly with having support member, and arrange relative to central plane specular.
DE102005059971A1 describes a kind of for making fluid carry out with the big gas flow stream in inflow gas passage to mix, be particularly useful for the device being added to by reducing agent in the aerofluxus comprising nitrogen oxides.For this purpose it is proposed, employ nozzle spray gun, this nozzle spray gun has the flow direction of the nozzle for delivering fluid, the axis of this nozzle spray gun and gas flow stream and defines angle.Nozzle is assigned the flat mixer element with space, and the flow direction of this flat mixer element and gas flow stream defines angle.Mixer element defines multiple flowing whirlpool, and at least fluid be partly into these flowing whirlpools.In order to prevent the formation of coating, provided, when by liquid be used as fluid time, nozzle spray gun is equipped with at least two atomizer nozzle, flow direction from these atomizer nozzles to gas flow stream tilt and in the opposite direction toward each other.Atomizer nozzle is assigned to disc type mixer element so that it is possible that the gaseous parts of evaporation and unevaporated drop are partially separated.
DE102006043225A1 describes a kind of exhaust equipment for burning machine, and this exhaust equipment has the exhaust line guiding aerofluxus and the injection device for injecting liquid in exhaust line.In the downstream of injection device, the improvement of the liquid that evaporation element is arranged in exhaust line and causes injection is evaporated, and this evaporation element includes at least one the tubulose plate body extended on the longitudinal direction of exhaust line.Additionally, be provided with spring clamping device, this spring clamping device attached vaporising device or take up in exhaust line leans against on described exhaust line.
Prior art as most tight association, in a kind of gas extraction system described in DE102005052064A1, this gas extraction system has the injection device for reducing agent, wherein, include the plate body of at least one wall at injection device arranged downstream, this at least one wall extends on the longitudinal direction of exhaust line and is exposed to exhaust stream on both sides.Reducing agent is sprayed onto on wall at least in part, causes that liquid reducer is changed into mist state or gaseous state.
Summary of the invention
The theory of the present invention is to provide a kind of method, and the method adds the mixability of aerofluxus and fluid according to the shape of exhaustor.
Solution is a kind of for exhaust stream carries out with fluid the method mixed in the exhaustor of gas extraction system, and wherein, fluid is injected into by injection device in exhaustor, it is characterized by the following methods stage:
A) in exhaustor, in the region of injection device, this exhaust stream is guided at the flow direction being parallel to exhaustor,
B) directly inject fluid on the deflecting element being arranged in exhaustor on the central injection direction with angle se and flow direction deviation,
C) by being arranged on deflecting element and redirecting to central authorities' distribution direction about flow direction from its flow direction with making exhaust gas portion with angle sv at least one kicking up sheet metal parts at least in part about flow direction,
D) make fluid be carried by the diverted part on distribution direction of exhaust stream at least in part before and after ballistic throw element, and the sheet metal parts kicked up redirect on distribution direction.At this, it is necessary that exhaust stream is redirect on distribution direction by sheet metal parts before blender, and it deviates with flow direction significantly.Can change between 270 ° and 360 ° at this for the angle se between the direction that the direction and fluid can be injected into.
As a result, the fluid injected on side is transmitted on center position and on the whole profile of exhaustor and therefore impacts blender on the whole profile of blender and then can mix with exhaust stream.Even when making exhaustor not be straight but curved due to installing space, it is advantageous for when the fluid direction of motion can be deflected the element process relative to exhaustor to affect.
One further theory is, at least part of Ground shock waves of fluid be arranged at sheet metal parts about injection direction before revision board and at least in part experience redirect on flow direction and then redirect on some hybrid directionals by the static mixer with at least one hybrid element and therefore mix further.These revision boards are substantially arranged at sheet metal parts parallel above in sheet metal parts, distribution on the side injecting fluid of this sheet metal parts.When the other part of fluid stream was redirect to flow direction from injection direction by revision board before arriving sheet metal parts, fluid distribution before blender can increase.
Advantageously, kicking up of sheet metal parts is by mean of what some fins realized, and these fins are arranged on sheet metal parts, kick up with identical or different angle sv, and wherein angle sv is between 0 ° and 85 °.Due to these fin is kicked up the fact, sheet metal parts self can be arranged parallel to flow direction so that only these fins guarantee exhaust stream and that necessity of fluid therefore turns to generation.
It is further favourable that revision board includes upwardly extending some borings in drill bit side, wherein drill bit direction extends with the angle bs between 45 ° and 135 ° about flow direction.As a result, a part for fluid can be dispensed through the one or more revision boards on the profile of blender further.Therefore fluid partly can flow further in injection device and partly be turned to by these revision boards.The accumulation part of flowing is turned to further and is carried at flow direction, and the non-accumulated part of the flowing of traverse boring arrives the next revision board on injection direction or sheet metal parts.
Revision board is arranged parallel to flow direction and includes some correction fins, and these are revised fin and kick up with angle sk about flow direction, and wherein, angle sk is between 95 ° and 265 °.These are revised fin and are stamped out revision board so that do not have the fluid of accumulation can pass owing to the opening of impressing formation is to flow through revision board.Meanwhile, revise fin by these and make fluid stable so that compared with above-mentioned flow regime, fluid is turned to slower by the exhaust stream on flow direction.
Being provided with some mixing fins on hybrid element, these mixing fins are kicked up with angle ms about flow direction and kick up with angle mv about distribution direction, and wherein, the maximum of angle ms is 70 °, and angle mv is more than 1 °.For mixed process, it is advantageous to fluid is turned to and is not guide further by these mixing fins on the equidirectional determined by fin or correction fin further.
For the method, for being arranged in the exhaustor of gas extraction system and deflecting element for retaining the fluid being injected in gas extraction system by means of injection device is advantageous for, this exhaustor guides exhaust stream, wherein, deflecting element can be positioned in the flowing direction before having the static mixer of at least one hybrid element and include at least one sheet metal parts, this at least one sheet metal parts can be positioned within an exhaust-gas stream, wherein, this sheet metal parts is kicked up with angle sv at least partially in relation to flow direction on distribution direction, its result is, exhaust stream and fluid redirect to distribution direction from flow direction at least in part.Sheet metal parts defines with the angle sv fin kicked up.Sheet metal parts is arranged in the flowing direction before blender, in order to realizing symmetrical distribution on the profile of exhaustor and therefore on the whole blender profile of fluid, fluid has been partially converted into gaseous state.Gaseous parts is more little, and deflecting element is more big by the effect in the mixed process of blender.Sheet metal parts is kicked up on distribution direction by the fin relative to the angled sv of flow direction at least in part, as a result of which it is, exhaust stream and fluid redirect to distribution direction from flow direction at least in part.Can ignoring sheet metal parts from the impact in deflection aspect, this sheet metal parts is arranged parallel to flow direction.
On sheet metal parts, define with the angle sv some fins kicked up.Turning to of distribution fluid on the profile of exhaustor is achieved by some fins.By in the flowing direction each other before and after some fins of arranging, turning to of flow element is bigger, because of the turning to and partly accumulated in the flowing direction realized by these fins.
Can being positioned in exhaustor by deflecting element, its mode is so that fluid big degree Ground shock waves direction on deflecting element.As a result, first reduced fluid velocity by deflecting element and therefore can change flow direction more easily.
Depending on exhaust quality stream and delivery temperature, fluid penetration depth in exhaustor and fluid shock zone on deflecting element change.
Deflecting element includes one or several correction panel, and these are revised panel and are arranged parallel to flow direction or are parallel to sheet metal parts.These revision boards make fluid down and enable a fluid to be turned to ahead of time by exhaust stream.These revision boards can include different length or can be designed to have equal length.
Revision board includes revising, with the one or several correction fins kicked up of the angle sk between 95 ° and 265 ° with by these, some openings and/or the upwardly extending some borings in drill bit side that fins are formed transverse to flow direction, wherein, drill bit direction extends with the angle bs between 45 ° and 135 ° about flow direction.Alternatively, being provided with upwardly extending some borings in drill bit side, wherein, drill bit direction extends with the angle bs between 45 ° and 135 ° relative to flow direction.As a result, a part for fluid directly can flow through opening or boring on its injection direction and not slow down.The correction to flowing and stabilisation is achieved by these revision boards.
Sheet metal parts protrudes past all revision boards and sheet metal parts about central authorities after injection direction is arranged at last revision board about contrary flow direction.Due to sheet metal parts be therefore arranged to exhaustor relative with decanting point the fact that wall is adjacent, sheet metal parts can affect the total amount injecting fluid.
Deflecting element is designed to about central plane specular, and this central plane is oriented at a right angle with flow direction, or these fins and/or correction fin are arranged to about central plane specular.As this symmetry as a result, it is possible to notable bigger degree affect the same central flows region injecting fluid in exhaustor because central mixing element or flow element have identical alignment.
Multi-stage splitter is advantageous for, this multi-stage splitter is made up of deflecting element from the description above and the static mixer after being attached on deflecting element or being indirectly arranged in the deflecting element with at least one hybrid element, wherein, hybrid element includes at least one support member for multiple mixing fins or a flow element.Due to the combination of deflecting element Yu blender, it is possible for the high efficiency method mixed.
Sheet metal parts or revision board are parallel to or oblique are arranged on support member or in flow element in flow direction.As a result, blender and deflecting element (or also integrally) at least in part are designed to single-piece and have identical material.
These mixing fins or flow element are kicked up with the angle ms of up to 70 ° about flow direction, and about distribution direction to kick up more than the angle mv of 1 °.
Hybrid element is designed to about central plane specular, and this central plane is arranged at a right angle with flow direction, or these mixing fins and/or these support members are arranged to about central plane specular.
Depend on application, it should advantageously, hybrid element is designed to about flow direction point symmetry, or these mixing fins and/or these support members are arranged to about flow direction point symmetry.Due to this arrangement, exhaustor creates after blender reverse rotation vortex.
In order to assemble or reequip, it should advantageously, being parallel to exhaustor additionally, be provided with and be parallel to the housing of flow direction of aerofluxus, support member or flow element are arranged on the housing, and this housing can be positioned on exhaustor or in exhaustor.As a result, the flow element of blender or hybrid element can before they are inserted in exhaustor pre-assembled in the housing.
Advantageously, static mixer includes the some hybrid elements for aerofluxus, these hybrid elements are arranged to transverse to flow direction adjacent one another are, wherein, each hybrid element includes some mixing fins, and each mixing fin includes about borderline region and two side border region after one of flow direction.Each hybrid element includes support member, and this support member is parallel to flow direction alignment, and these mixing fins are arranged on this support member via borderline region thereafter and kick up relative to this support member.Each support member includes two stub areas, and corresponding support is attached on exhaustor via these stub areas.Being provided with at least three hybrid element, the support member of these hybrid elements is arranged in each leisure region between the stub area of flow direction with from least the distance of 5mm is adjacent one another are each other.All mixing fins are arranged in from exhaustor one segment distance place by all sides boundary region and by front border region.Preferably, adjacent support member has between 5mm and 100mm, preferably distance between 12mm and 15.5mm.As a result, in process even at the aerofluxus flowing increased and heat input, these hybrid elements can weld via the support member on exhaustor or on housing separately, and the stability of this hybrid element is by mean of these support members and is arranged at what mixing fin thereon held.Due to the heat insulation installation of each hybrid element and owing to being arranged on corresponding support member from a segment distance each other and these mixing fins facing tube wall, it is achieved that the circulation of the improvement of these fins and the mixing therefore improved.
If this static mixer includes transverse to flow direction several hybrid elements adjacent one another are, and corresponding hybrid element includes the support member being parallel to flow direction alignment and several mixing fins being arranged on support member and kicking up relative to this support member, then static mixer or allotter can also be advantageous for.Each support member includes two stub areas and two join domains, and the two join domain is arranged between the two stub area and is arranged on the direction of this support member towards each other and from these stub area one segment distance places.Stub area and first join domain of corresponding support member are connected to each other, the regional area making this support member defines the cell of closing, and at this support member around on the regional area of this cell, at least two mixing fin is arranged on this support member.As a result, the front portion of the mixing fin extended in this cell is not closed by the regional area (being not provided with mixing fin thereon) of support member and be positioned in corresponding cell.
Can also is that advantageously for static mixer or allotter, this blender includes the some flow element for aerofluxus, and these flow element are arranged to transverse to flow direction adjacent one another are.Corresponding flow element is to be formed by the sheet metallic plate with corrugated cross-section profile, and this sheet metallic plate includes some passages, and these some passages extend adjacent to each other on the direction of parallel figure axis.The figure axis of corresponding flow element is oriented to the angle ms of up to 70 ° or up to the angle ms of-70 ° about flow direction.These figure axis are alignd by least two flow element, and this at least two flow element is arranged to angle ms equal in direction and size adjacent one another are.As a result, flowing that flow up in the side transverse to flow direction, fluid that arrive mixer center is substantially caught by two central flows elements with same alignment and can be diverted in another direction.Cross-sectional profiles is preferably the wavy of rule and all parallel arrangement of these figure axis.
A kind of for the blender that exhaust stream carries out mixing with the fluid being injected in exhaustor is included tubular shell, this tubular shell has to be positioned at and subtracts undersized middle body between the first end and the second end.This housing includes the circumferentially spaced multiple apertures extended through this middle body.First hybrid element includes the first peripheral part in the aperture being positioned in these apertures and is positioned at the second week rim portion in another aperture in these apertures.Second hybrid element includes the 3rd peripheral part and the 4th week rim portion that are positioned in other apertures of this housing.
The blender that exhaust stream for will be implanted into the fluid in exhaustor carries out mixing includes tubular shell, and this tubular shell has the leading collar portion at the open end place being positioned in this housing and the rear guide sleeve ring part at the contrary open end place being positioned in this housing.Middle body includes the outside dimension of reduction compared with leading collar portion and rear guide sleeve ring part and the inside dimension of reduction.Hybrid element is positioned in housing and extends in two apertures extending through middle body.Hybrid element is fixed on the middle body of housing in the position adjacent with each aperture in the two aperture.
Patent claims and description are explained and the further advantage of the present invention shown in the drawings and details.
Accompanying drawing explanation
Fig. 1 illustrates the view of a part for the gas extraction system with exhaustor and injection device, and wherein, blender is arranged with deflecting element, and this deflecting element is kicked up relative to flow direction；
Fig. 2 illustrates the view with blender and the deflecting element with multiple revision boards according to Fig. 1；
Fig. 3 illustrates have blender and the view of deflecting element designed in a similar manner with blender according to Fig. 1；
Fig. 4 illustrates specular blender；
Fig. 5 illustrates the point symmetry blender of the hybrid element with tape cell lattice；
Fig. 6 illustrates the blender in exhaustor according to Fig. 4；
Fig. 7 illustrates the point symmetry blender with distance multiple support members；
Fig. 8 illustrates the side view of the support member with the multiple mixing fins alternately kicked up；
Fig. 9 illustrates the side view of the blender with deflecting element with multiple correction fins according to Fig. 7；
Fig. 9 a illustrates the side view of the blender with deflecting element with multiple borings according to Fig. 7；
Figure 10 illustrates the view of the blender with multiple flow element contacting one another；
Figure 11 illustrates three flow element for the blender according to Figure 10, and these flow element differently arrange relative to its corresponding figure axis；
Figure 12 illustrates the side view of the blender in exhaustor according to Figure 10, and this exhaustor has the deflecting element of preactivate；
Figure 13 illustrates the angle figure for deflecting element and injection device；
Figure 14 illustrates for mixing the fin angle figure relative to deflecting element；
Figure 15 is the perspective view substituting blender；
Figure 16 is another perspective view substituting blender；
Figure 17 is the end-view substituting blender；
Figure 18 is the cross sectional view of the blender intercepted along 18-18 line as shown in Figure 17；
Figure 19 is the fragmentary sectional view intercepted along 19-19 line as shown in Figure 18；
Figure 20 is the side view of blender；
Figure 21 is the perspective view of another replacement blender；
Figure 22 is the perspective view of another replacement blender；
Figure 23 is the fragmentary, perspective view of another replacement blender；
Figure 24 is the partial end view of blender depicted in figure 23；
Figure 25 is the perspective view of another replacement blender；
Figure 26 is the perspective view that the blender described in Figure 25 intercepts with another angle；
Figure 27 is Figure 25 and the decomposition diagram of blender depicted in figure 26；
Figure 28 is the fragmentary sectional view of the part including another exhaust after treatment system substituting blender；
Figure 29 is the side view of another replacement blender；
Figure 30 is the end-view substituting blender described in Figure 29；And
Figure 31 is the cross sectional view of the housing of another replacement blender.
Detailed description of the invention
Fig. 1 illustrates the exhaustor 40 of the part as gas extraction system 4, and the fluid as reducing agent injects with the injection device 5 being positioned on flange 50 via the flange 50 being arranged on exhaustor 40 on injection direction E.For the sake of clarity, accompanying drawing illustrates central authorities injection direction E rather than the actual conical flow state represented in figure 3 by two dotted lines defining V-arrangement.
In exhaustor 40, aerofluxus is substantially parallel to exhaustor 40 on flow direction S and flows.In order to the present invention is described, assume that flow direction S extended in parallel before deflecting element 6 on the whole pipe cross section of exhaustor 40 for purposes of clarity.
Depending on the quality stream of reducing agent, reducing agent flows on injection direction E and is flowed in exhaustor 40, is turned to more greatly or to lesser extent by exhaust stream.After injection device 5, flow direction S is provided with the allotter being made up of the blender 1 with deflecting element 6.Allotter connects 41 via blender 1 and flange and is positioned in exhaustor 40.
The big degree Ground shock waves deflecting element 6 of reducing agent makes the flowing momentum of reducing agent reduce.Deflecting element 6 is kicked up with angle sv relative to flow direction S so that exhaust stream redirect to distribution direction V from flow direction S via deflecting element 6.Due to this diverted exhaust stream, reducing agent partly before its ballistic throw element 6 and especially after skim over and be directed on distribution direction V in the tube hub of exhaustor 40.
Fig. 2 illustrates a part for the gas extraction system 4 such as reference Fig. 1 description, although at this, blender 1 incorporates multiple mixing fin 31, as being shown in further detail in Fig. 4 to Fig. 7 generally.Deflecting element 6 for having this blender 1 of multiple mixing fin 31 is schematically depicted in more detail in fig .9 and includes the sheet metal parts 60 of a part as deflecting element 6, and this sheet metal parts is arranged parallel to flow direction, has with the angle sv fin 61 kicked up and other multiple revision boards 62 with multiple correction fin 64.
Blender 1 according to Fig. 4, Fig. 6 and Fig. 7 includes three hybrid elements 3 and one or two additional hybrid element 3a, and these three hybrid elements are arranged to transverse to flow direction S and are each adjacent to each other.Hybrid element 3,3a are substantially by support member 30,30a be arranged at one or several mixing fins 31,31a thereon and constitute.Corresponding mixing fin 31,31a are attached on support member 30,30a via its borderline region hR relative to flow direction S.Side border region sR and front border region vR forms multiple free-flow edge about flow direction S, and is neither connected also is not connected with housing 2 or exhaustor 40 with another mixing fin 31,31a.
Support member 30 includes a stub area 34 respectively on two end, and without arranging mixing fin 31, and this stub area is angled according to Fig. 7.Support member 30 is via two stub areas 34 being attached on housing 2 or being attached on exhaustor 40 according to Fig. 6 as shown in example in the figure 7.Between the two stub area 34, support member 30 is freely suspended from housing 2 or in exhaustor 40, i.e. this support member is neither supported or keep also not supporting or keeping other structure element by other structure element.Additionally, these support members 30 are substantially arranged to parallel to each other in the region between these stub areas 34 and at distance 35 place from about 13.5mm each other.
Housing 2 is cylindrical tube section, these hybrid elements 3 and depend on that the additional hybrid element 3a of exemplary embodiment is attached on its inner sheath surface 20.Such blender 1 is inserted in the exhaustor 40 of gas extraction system 4 together with housing 2, and as shown in Figure 2, and aerofluxus flows through this blender on the flow direction S of central axial line 23 being parallel to housing 2.
Support member 30 is made up of the ribbon sheet metal material with the width 32 limited in fig. 8 and is parallel to flow direction S alignment.The central axial line 23 of main flow direction that flow direction S refers to the aerofluxus in blender 1 and the central axial line 12 and housing 2 that are parallel to blender 1 extends.Owing to support member 30 is parallel to flow direction S and is accordingly parallel to the fact that wall extends of exhaustor 40, blender 1 can be simply installed in exhaustor 40 transverse to flow direction.
According to, in the exemplary embodiment of Fig. 7, being formed by three hybrid elements 3 that substantially located adjacent one another and point symmetry arrange, each free support member 30 of these hybrid elements 3 and four mixing fins 31.Therefore, whole hybrid element 3 is made up of support member 30 and four mixing fins 31.
Support member 30 can be divided into three regional areas 36 to 38 between these stub areas 34.Multiple respective contiguous center regional areas 36 on the opposite sides of outer regional areas 37,38.These outer regional areas 37,38 are respective is angled relative to central authorities' regional area 36, i.e. central authorities' regional area 36 each surrounds angle [alpha] with the outer regional area 37,38 of the two.Therefore, the outer regional area 37,38 of the two cuts through central authorities' regional area 36 about being parallel to the flow direction S first axle 11 extended with the angle [alpha] of about 12 °.These outer regional areas 37,38 are angled on the contrary about central authorities' regional area 36, support member 30 is made to be designed to about central axial line 12 point symmetry, this central axial line is parallel to flow direction S, i.e. support member 30 and these mixing fins 31 are formed and are arranged to point symmetry each other.
The same with these three hybrid element 3, also in the region of these hybrid elements 3, it is being provided with two additional hybrid element 3a.Additional hybrid element 3a is formed by support member 30a and mixing fin 31a.Additional hybrid element 3a is attached on the inner sheath surface 20 of housing 2 via two stub area 34a and to be attached in the way of free support between the two stub area 34a.
By the exemplary embodiment according to Fig. 4, support member 30 can be divided into three regional areas 36 to 38 according to the exemplary embodiment of Fig. 7.Multiple respective contiguous center regional areas 36 on the opposite sides of outer regional areas 37,38.These outer regional areas 37,38 are each angled relative to central authorities' regional area 36, i.e. central authorities' regional area 36 each surrounds angle [alpha] with the outer regional area 37,38 of the two.Therefore, the outer regional area 37,38 of the two cuts through central authorities' regional area 36 about being parallel to the flow direction S first axle 11 extended with the angle γ of about 9 °.These outer regional areas 37,38 are angled with equidirectional about central authorities' regional area 36 so that support member 30 is designed to about central plane 10 specular, and this central plane is parallel to flow direction S.
As point-symmetric result, the flowing on the side of central plane 10 upwardly and outwardly turns to, contrary with the flowing on the direction transverse to flow direction S on the opposite side of central plane 10.In the figure 7, flowing is represented by multiple arrows.
According in the exemplary embodiment of Fig. 4 to Fig. 9 a, these mixing fins 31 surround angle beta about the direction of support member 30 and surround angle ms about flow direction S.These mixing fins 31 alternately illustrate.As being shown in further detail in figs. 8 and 9, angle beta is+135 ° or-135 °, and angle ms is+45 ° or-45 °.Additionally, as especially figure 7 illustrates, partly the mixing fin 31 of direct neighbor includes the rule distance 33 from least 1mm each other.
In unshowned exemplary embodiment, adjacent stub area 34 is connected to each other by two support members 30, and the two support member is arranged to adjacent one another are.Additionally, the respective stub area 34a of these an additional hybrid element 3a stub area 34 respective with adjacent hybrid element 3 connects.This is by mean of what following facts realized: these three hybrid element 3 and the additional hybrid element 3a of the two are produced by unitary piece of metal band.
As illustrated in figures 7 and 9, the outside 21 of housing 2 is provided with retaining element 24.Retaining element 24 is designed to a convex joint (burl) and highlights on the contrary with outside 21.Due to retaining element 24, blender 1 can be fastened and do not overturn around central axial line 23 in exhaustor 40.Additionally, when tightened, retaining element 24 also serves following purpose: specify blender 1 about the position of rotation of central axial line 23 in gas extraction system 4 simultaneously.For this purpose it is proposed, be provided with the corresponding retention means not being shown in further detail in certain position, retaining element 24 is pushed in this retention means on the direction of central axial line 23.
According to Fig. 9, blender 1 is installed between two exhaustors 40,40' has housing 2.For this purpose it is proposed, the two exhaustor 40,40' are attached on housing 2 on both sides.In order to weld the two exhaustor 40,40' and being welded to connect for these exhaustors 40,40' and blender 1, between these exhaustor 40,40', it is provided with gap 42.Gap 42 is due to the fact that generation: the adjustment element 22 that exhaustor 40,40' are distributed by circumference on the direction of central axial line 12 is spaced each other, and corresponding exhaustor 40,40' are each contiguous to these on side on the direction of central axial line 12 and adjust on element.
Blender 1 according to Fig. 4 and Fig. 6 is designed to and central plane 10 specular, and this central plane is directed parallel to flow direction S, i.e. support member 30 and these mixing fins 31 are formed and are arranged to mirror one another.These blenders 1 include being arranged to parallel to each other and adjacent three hybrid element 3, and wherein, these hybrid elements 3 are individually and are mixed what fin 31 was formed by support member 30 and or three be arranged on this support member 30.
Support member 30 can be divided into three regional areas 36 to 38 between these stub areas 34.Multiple respective contiguous center regional areas 36 on the opposite sides of outer regional areas 37,38.These outer regional areas 37,38 are respective is angled relative to central authorities' regional area 36, i.e. central authorities' regional area 36 each surrounds angle γ with the outer regional area 37,38 of the two.Therefore, the outer regional area 37,38 of the two cuts through central authorities' regional area 36 about being parallel to the flow direction S first axle 11 extended with the angle γ of about 9 °.These outer regional areas 37,38 are angled with equidirectional about central authorities' regional area 36 so that support member 30 is designed to about central axial line 12 specular, and this central axial line is parallel to flow direction S.
Central mixing fin 31 pericardium wherein draws together otch 39, and the length LS of this otch is between 50% and 80% of the length LM of mixing fin 31.Due to otch 39, decrease the formation of vortex, because the flowing in middle section turns to lesser extent.Additionally, just in the middle section of blender 1 (wherein quality stream is maximum), reduce the flowing dynamic resistance of blender 1.
The same with these three hybrid element 3, it is arranged below additional hybrid element 3a at these three hybrid element 3.Additional hybrid element 3a is formed by support member 30a and mixing fin 31a, and this mixing fin also includes otch 39.Additional hybrid element 3a is attached on the inner sheath surface 20 of housing 2 via two stub area 34a and to be attached in the way of free support between the two stub area 34a.
Fig. 5 illustrates the point symmetry blender 1 with two identical hybrid elements 3,3'.Corresponding hybrid element 3,3' each include two stub areas 34,340 and two join domains 370,380 being arranged between these stub areas 34,340.The stub area 34 of corresponding support member 30 and the first join domain 370 are connected to each other so that the regional area 301 of support member 30 defines the cell 300 of closing.At support member 30 around on the regional area 301 of cell 300, two mixing fins 31 are arranged on support member 30.Hybrid element 3 is attached on exhaustor 40 via stub area 340 and the second join domain 380.
The point symmetry blender 1 of the exemplary embodiment according to Fig. 5 and Fig. 7 can similarly be combined with deflecting element 6, can be so equally according to the specular blender 1 of the exemplary embodiment of Fig. 4 and Fig. 6.As, shown in Fig. 9 and Fig. 9 a, deflecting element 6 includes the sheet metal parts 60 with one or several fins 61, and these one or several fins are kicked up with the angle of about 20 °.Due to these fins 61, exhaust stream turns upwards towards on distribution direction V, and is that therefore reducing agent also upwards skims over.Sheet metal parts 60 is arranged directly in support member 30,30a is upper and defines structure element according to the exemplary embodiment illustrated with hybrid element 3,3a, and this structure element is single-piece and is made up of identical material.
Deflecting element 6 include some revision boards 62,62', 62 ", these revision boards are arranged parallel to flow direction S and are parallel to sheet metal parts 60, and this causes reducing agent directly previously assigned at blender 1.Revision board 62 is arranged directly in support member 30,30a is upper and defines structure element according to the exemplary embodiment illustrated with hybrid element 3,3a, and this structure element is single-piece and is made up of identical material.
These revision boards 62,62', 62 " include the some correction fins 64 according to Fig. 9, these revise fins kick up with the angle sk of 155 ° about flow direction S.As being shown specifically in fig. 14, these are revised fins 64 and are partly imprinted out revision board 62 and in the direction of adjacent revision board 62 and/or highlight from revision board 62 on the direction of sheet metal parts 60.As a result, revising below fin 64, opening 63 is formed on corresponding revision board 62, corresponding to the region of revising fin 64 prominent from this revision board 62.Revise fin 64 to highlight on the one or both sides of revision board 62.
Similarly, the fin 61 on sheet metal parts 60 is stamped out so that sheet metal parts 60 includes the opening 63 below each fin 61, the region that this opening highlights from sheet metal parts 60 corresponding to fin 61.As figure 14 illustrates, revise fin 64 and highlight from revision board 62 on both sides, and fin 61 highlights from sheet metal parts 60 on side.
Revision board 62 according to Fig. 9 a, 62', 62 " include substituting the some borings 65 revising fin; these some borings are directed on the B of drill bit direction; the angle bs that this drill bit direction is in 90 ° with flow direction S, exhaust stream and reducing agent can be upward through these borings at least in part and flow through deflecting element 6 in the side of central axial line 12.
Fig. 3 also show a part for the gas extraction system 4 as described in fig. 1 and 2, but, in the exemplified embodiment, blender 1 is combined with deflecting element 6, and this deflecting element constructs in the way of similar to blender 1 self.Such blender 1 is to be formed by several flow element 7 adjoined each other, 7' according to Figure 10.
Figure 11 show in detail blender 1 be by the some flow element 7 adjoined each other, 7', 7 " construct.Corresponding flow element 7,7', 7 " being formed by the sheet metallic plate 70 with corrugated cross-section profile 71, this sheet metallic plate includes front side 73 and some passages 72, and these some passages extend adjacent to each other in the direction of parallel figure axis 74.The two adjacent flow element 7, the figure axis 74 of 7', 74' alternately kick up extension with the angle ps of+40 ° and-40 ° about flow direction S.As a result, in the passage formed by the two flow element 7,7', flowing turns to simultaneously up and down.
But, according to the present invention, extend in parallel (that is, with the angle ps of-40 °, be identical in its direction and size) and therefore not adjacent to each other about adjacent two the central flows element 7' of central plane 10,7 " figure axis 74', 74 ".As a result, as illustrated by arrow in Fig. 10, by the two flow element 7', 7 " (that is, in the same direction) flowing in the passage formed turns to only up.In the exemplary embodiment being described above, angle ps corresponds to angle ms.
Same alignment due to the two flow element 7' relative to and that be arranged adjacent to central plane 10,7 " figure axis 74', 74 " simultaneously, it is achieved that blender 1 is about the specular geometry of central plane 10.Exhaust stream and reducing agent in blender 1 part of flowing in the heart therefore the two flow element 7', 7 " in a direction on be diverted.
Figure 12 illustrates the cross section of blender 1, and wherein, figure axis 74,74' kick up with the angle of ± 30 °.Before blender 1, it is scheduled that the deflecting element 6 constructed in a similar manner with blender 1.By deflecting element 6, several sheet metal parts 60 with cross-sectional profiles 66 are also arranged to immediately adjacent to one another.The figure axis 67 of the deflecting element 6 of adjacent sheet metal parts 60,67' are not in relation to flow direction S and kick up, i.e. they are parallel to flow direction S and extend.Therefore, deflecting element 6 defines the two central flows element 7' with blender 1 between independent sheet metal parts 60,7 " corresponding multiple independent passage, in the passage that these are independent, exhaust stream and reducing agent are only directed on the direction being parallel to flow direction S.
Figure 13 illustrates and represents the above angle figure for revising fin 64 and injection direction E, the angle described together with distribution direction V and flow direction S and angle ratio.Figure 14 illustrates about mixing fin 31 and sheet metallic plate 70 and this general survey about distribution direction V and flow direction S.
Figure 15 to Figure 20 depicts with the replacement blender of reference number 400 mark.Blender 400 includes the first hybrid element the 402, second hybrid element the 404, the 3rd hybrid element 406 and the 4th hybrid element 408.These hybrid elements 402,404,406,408 are each fixed to be gone up blender 400 is set to single type assembly each other.First hybrid element 402 plays the effect of holder or housing and hybrid element.In order to realize this effect, the first hybrid element 402 includes first curved wall 412 spaced apart with the second curved wall 414.The first side wall 412 and the second sidewall 414 are interconnected to limit " u "-shaped by substantially planar base 416.As illustrated in the drawings, base 416 can be bending or include small size bending to provide the flex point 415,417 of bending.The first side wall 412 includes the far-end 418 spaced apart with the far-end 419 of the second sidewall 414.Blender 400 is positioned in exhaustor 40 so that align with injection device 5 in the gap between end 418,419.Can will not be mixed wall restriction along the reagent that the upper inner surface of pipe 40 flows and will alternatively flow between end 418,419 in downstream.
Integrally formed deflecting element 420 axially extends from base 416 with being arranged essentially parallel to flow direction S.Deflecting element 420 includes multiple correction fin 422, and these are revised fin and kick up with the angle A of 30 ° about flow direction.Mixing fin 426 extends with the angle B of 45 ° relative to flow direction S.Otch 428 extends in mixing fin 426 partly to make this fin bifurcated.
Second hybrid element 404 includes first flange 430 spaced apart with the second flange 432.First flange 430 and the second flange 432 are interconnected by base 434.Base 434 is substantially parallel with base 416 and offsettingly extends.First flange 430 includes being oriented to the outer surface 438 that the inner surface 440 with the first side wall 412 engages.First flange 430 is fixed on the first side wall 412 by the technique utilizing such as welding, riveted joint or some other mechanical fastening technique.In a similar manner, the second flange 432 includes the outer surface 442 that is oriented to engage with the inner surface 444 of the second sidewall 414.
Second flange 432 is fixed on the second sidewall 414.Second hybrid element 404 also includes relative to flow direction S with the angle C of the 40 ° one or more correction fins 450 extended.Mixing fin 452 extends with the angle D of 40 ° in the opposite direction with revising fin 450.In the embodiment described in Figure 15 to Figure 20, single correction fin 450 is depicted in the upstream of two mixing fins 452 being laterally spaced apart.The mixing fin 454 of another part bifurcated is parallel to fin 426 and extends.Outer mixing fin 456 and 458 extends with the angle E of 45 ° about flow direction S.It should be understood that angle E is not necessarily equal to angle B, and often it is beneficial that have the mixing fin 454 extended in a non-parallel manner relative to fin 426.These angles can be changed with the uniform reducing agent distribution of the best realization of " adjustment " blender 400 in particular system.
3rd hybrid element 406 is substantially similar to the second hybrid element 404.3rd hybrid element 406 includes the first flange and the second flange 464,468.First flange 464 and the second flange 468 are interconnected by base 470.Base 470 is positioned substantially parallel to flow direction S and base 434 extends.First flange 464 and the second flange 468 are formed and are positioned to be fixed on the inner surface 440,444 of the first hybrid element 402.In the way of similar to the second hybrid element 404, the 3rd hybrid element 406 includes mixing fin 476, the mixing fin 478 of bifurcated and the multiple outside mixing fin 480,482 revising fin 474, be laterally spaced apart for a pair.The fin of this hybrid element 406 is arranged essentially parallel to the similar fin of the second hybrid element 404 and extends.It should be understood that this relation is merely illustrative of and can limit other angle.
4th hybrid element 408 is substantially similar to the second hybrid element 404 and the 3rd hybrid element 406.4th hybrid element 408 includes the first flange and the second flange 486,488.First flange 486 and the second flange 488 are interconnected by base 490.Base 490 is positioned substantially parallel to flow direction S and base 470 extends.First flange 486 and the second flange 488 are formed and are positioned to be fixed on the inner surface 440,444 of the first hybrid element 402.In the way of similar to the second hybrid element 404, the 4th hybrid element 408 includes mixing fin 496, the mixing fin 498 of bifurcated and the multiple outside mixing fin 500,502 revising fin 494, be laterally spaced apart for a pair.
5th hybrid element 610 includes being positioned in the line of rabbet joint 688,690 and being fixed to the 9th flange on the 7th antelabium and the 8th antelabium 692,694 and the tenth flange 684,686.
Once the second hybrid element the 404, the 3rd hybrid element 406 and the 4th hybrid element 408 are fastened on the first hybrid element 402, it is possible to mixer assembly 400 is positioned in exhaust manifolds (exhaustor 40 described before such as).It should be understood that the first side wall 412 size with the second sidewall 414 can be determined that with shape the inner surface with exhaustor 40 contact or against.Blender 400 can be placed on axial location desired in exhaustor 40 and angular orientation place and may then pass through any amount of technique (including welding, mechanical fasteners, clip etc.) and be secured on it.
Figure 21 depicts with the replacement blender of reference number 400a mark.Blender 400a is substantially similar to the blender 400 described before, except the first side wall 412a includes the substantially planar part 413 that is positioned between arch section 415 and 417.Substantially planar part 413 is spaced apart with the inner surface of exhaustor 40, and part 415 and 417 is met this inner surface and is secured on it by the technique such as welded.In a similar manner, the second sidewall 414a includes the substantially planar middle body 419 that is positioned between sweep 421 and another sweep 423.Substantially planar middle body 419 is spaced apart with the inner surface of exhaustor 40.
Figure 22 to Figure 24 depicts another replacement blender with reference number 600 mark.Blender 600 includes multiple spaced hybrid element 602,604,606,608 and 610.Blender 600 includes the housing 612 that have received each hybrid element in these hybrid elements 602 to 610.Housing 612 can be independent element and be positioned in inside exhaustor, or alternatively, element 612 can represent exhaustor self.
Housing 612 includes open end 614, some the line of rabbet joint is axially extended from this open end.First pair of line of rabbet joint 616,618 axially extends one section of preset distance in parallel with each other from open end 614, and this preset distance terminates in multiple stop surface 617,619 place.The line of rabbet joint 616,618 can be formed a part for coining manipulation, is wherein made for extending through multiple otch of housing 612 and defining multiple antelabium (such as the first antelabium 620 and the second antelabium 622) protruded inwardly from instrument.First antelabium 620 is arranged essentially parallel to the second antelabium 622 and extends.
First hybrid element 602 includes the first peripheral part or flange 624 and spaced apart and substantially parallel second week rim portion or flange 626.First flange and the second flange 624,626 are interconnected by base 628.First flange 624 extends in the line of rabbet joint 618 adjacent with the first antelabium 620.In a similar manner, the second flange 626 extends in the line of rabbet joint 616 and is oriented to adjacent with the second antelabium 622.First flange and the second flange 624,626 are secured on the first antelabium and the second antelabium 620,622 by welding or soldering.The terminal depression of flange 624,626 is below the periphery 632 limited by the major part of housing 612.In this way, blender 600 can be inserted easily in the exhaust manifolds with circular cross section.That base 628 is depicted as substantially plane and include a pair axially extended rib 636,638.Rib 636,638 provides multiple flex point, and the first hybrid element 602 can about the bending of these flex points to hold based on thermal coefficient of expansion increase in component size.It it should be understood that, it is possible to include any amount of geometric properties to realize desired flowing and mixed characteristic.For example, it is contemplated that any one hybrid element in hybrid element 602,604,606,608,610 can include being similar to the one or more bendings revising fin 450 and/or mixing fin 476,478 or 480 or prominent contact pin.
Second hybrid element 604 is substantially similar to the first hybrid element 602, has axially extended third lip and the 4th flange 642,644.Second pair of line of rabbet joint 646,648 extends through housing 612 and each receives third lip and the 4th flange 642,644.Second hybrid element 604 is fixed on the 3rd antelabium and the 4th antelabium 647,649 of housing 612.
Housing 612 defines contrary a pair recess 650,652.The line of rabbet joint 654,656 extends through housing 612 in recess 650,652.The contiguous line of rabbet joint 654,656 is formed without the antelabium extended internally from housing 612, for instance antelabium 620,622.On the contrary, the line of rabbet joint 654 be positioned in housing 612 be spaced apart from each other and faced by end face 657,659 between.3rd hybrid element 606 includes the 5th generally radially extending flange and the 6th flange 660 and 662 that extend in the line of rabbet joint 654,656.
3rd hybrid element 606 includes the base portion 664 biased with the peripheral part radially extended or flange 660,662.Base portion 664 is by angled wall 668,670 and flange 660,662 interconnection that radially extends, so that it is guaranteed that blender 600 can bear the heating of repetition and cooling events and will not suffer damage in configuration aspects due to the thermal coefficient of expansion of these hybrid elements.Each hybrid element includes being oriented to from the partially radially bending outwardly of central authorities' flat base or some geometries, thus providing bending flex point.In heating process, along with substantially planar central base part increases in width, if it is necessary to each hybrid element discharges bending stress and makes the power being applied on housing 612 minimize.It is still further contemplated that one or more hybrid elements can include central base part and coplanar multiple peripheral part.This housing can include spring element (such as a part for recess 650) thermal expansion to be accounted for.In this configuration, it does not have on these hybrid elements, flex point is set.
Return to the embodiment of Figure 22 to Figure 24, it should be noted that the peripheral part of these flanges 660,662 be not be tipping up and be substantially parallel to base portion 664.So, a surface of flange 660 is positioned as being positioned as adjacent with end face 659 with adjacent and flange 660 the opposite end face of end face 657.Similar arrangement existence has flange 662 and end face defines the line of rabbet joint 656.
4th hybrid element 608 is substantially similar to the second hybrid element 604, except the 7th flange being separated by and the 8th flange 674,676 with third lip and the 4th flange 642,644 opposite direction on extend outwardly.In order to hold this arrangement, the 5th antelabium and the 6th antelabium 678,680 extend inward towards the 3rd antelabium and the 4th antelabium 647,649.
The impressing to sheet metal or the shaping operation each hybrid element to construct in these hybrid elements can be utilized.The size and dimension of these hybrid elements can be standardized or be customized for application-specific individually.Further, it is understood that although accompanying drawing depicts blender has five hybrid elements, the expection of other blenders has than the less or more hybrid element shown in those.Such as, Figure 23 and Figure 24 depicts blender 600a.Blender 600a substantially with blender 600.So, similar element will be identified with the reference number with suffix " a ".Blender 600a includes the first hybrid element 604a, the second hybrid element 606a and the three hybrid element 608a.Housing 612a only includes the line of rabbet joint of necessary amount to receive these hybrid elements.
Figure 25 to Figure 27 depicts replacement blender 700, and this replacement blender includes accordingly from the first hybrid element to the 6th hybrid element 702,704,706,708,710 and 712.These hybrid elements of blender 700 are substantially similar to the hybrid element of blender 400 and the hybrid element 606 of blender 600, except the respective body part of these hybrid elements is formed to have the substantially flat plate of the multiple fins relative to its angled extension.These hybrid elements 702-710 each includes the identified multiple mixing fins being tipping up having " a " suffix.Hybrid element 712 includes the deflecting element 716 extended outwardly with multiple correction fin 712a, and these are revised fin and face and mix fin 702a-710a opposite direction.Hybrid element 704 to 712 also include multiple after lead mixing fin, lead mixing fin after the plurality of and be arranged in the middle body of each hybrid element and identified have " b " suffix.Element 704 to 710 also include identified " c " suffix having small letter multiple after lead the outside mixing fin being laterally spaced apart.It should be understood that each type of mixing fin amount and its basically plane base portion extend angle can be customized to the reagent making injection optimal allocation in given row gas processing system especially.
Each hybrid element includes having the Both tongue portion reducing width, the identified hybrid element reference number having band " d " suffix of this Both tongue portion, this Both tongue portion and body part copline ground extends, and this body part has full width and identified has " e " suffix.The width of tongue reduces so that the substantially cylindrical inner surface 718 of ring 720 passes through.
Ring 720 includes the recess 724 that multiple radial inward extends.Each recess includes the line of rabbet joint 726 extended through.These recesses and these lines of rabbet joint arrange in couples and are identified with " a " suffix letter to " l ".These lines of rabbet joint are also identified with the corresponding suffix letter according to paired position.The Both tongue portion reducing width with suffix " d " is firstly inserted in ring 720.The peripheral part with the wider body part of " e " suffix extends through the line of rabbet joint pair of correspondence.Such as, the peripheral part of body part 702e laterally extends in line of rabbet joint 726a and 726b.As described about the 3rd hybrid element 606 before, these respective axial locations of hybrid element 702 to 712 are limited by the axial location of the length of the corresponding line of rabbet joint and the transition between the Both tongue portion with " d " suffix and the body part being identified with " e " suffix.
Being positioned on the side of each line of rabbet joint 726 is spring element 730, and another spring element 732 is positioned on the opposition side of the line of rabbet joint 726.For the sake of clarity, Figure 26 and Figure 27 only identifies spring element 730b and 732b.Spring element 730,732 deflects radially towards in the incident heat process that temperature increases and its width correspondingly increases due to thermal linear expansion coefficient of hybrid element 702.Remaining spring element plays similar effect when its association hybrid element changes size with temperature change.
Replacement blender 800 is depicted at Figure 28 place.Blender 800 includes the blender 802 being substantially similar to one of blender described above, and blender described above includes blender 1, blender 400, blender 600 or blender 700.Blender 802 is combined the distribution improving reagent in exhaustor 40 by blender 800 with the second blender 804.
Blender 802 includes uppermost mixing fin 806 backwards, and this mixing fin is substantially similar to the mixing fin 500 described in figure 18 or such as the mixing fin 31 shown in Figure 39 a.The composite character of blender 802 with the second blender 804 is combined and solves to inject reagent on the upper surface 810 of exhaustor 40 or the misgivings flowed about by blender 800.Upper surface 810 is defined as the part that the downstream of the approximate angled position at injection device 5 of the inner surface of exhaustor 40 extends.The flowing of exhaust airstream is provided amendment to improve the reagent distribution in downstream by the second blender 804.
Second blender 804 is depicted as the made of substantially spherical protuberance 814 highlighted from upper surface 810 radial inward.Protuberance 814 includes the point 816 of the maximum radial of about percent the 10 of the diameter of indent trachea 40 position inwardly.Second blender 804 is oriented to and the outgoing event from blender 802.Specifically, structure line 820 is extended by plotting the mixing fin 806 extended downstream.The position that structure line 820 continues radial inward extension at protuberance 814 is intersected with the second blender 804.In another way, structure line 820 intersects with protuberance 814 at the upstream position of point 816.In the instantiation described in the drawings, structure line 820 intersects with protuberance 814 at a some place, at this some place, percent the 25 of protuberance 814 are in the upstream of intersection point, and the downstream of percent the 75 of protuberance 814 intersection points being still located between structure line 820 and protuberance 814.
Advantageously, the second blender 804 provides little of the back pressure contribution not having by its minimum inside protuberance.Exhaust velocity distribution still substantially the same, and reagent uniformity show with the arrangement simply by blender 802 have 7 to percent 12 percent improvement.Fluid Mechanics Computation modeling shows: by using the combination of blender 802 and the second blender 804, spread the gradient of reagent concentration and Species distributing.It is contemplated that protuberance 814 can be axially located into and makes structure line 820 and second blender 804 intersection in the scope from 10 to percent 50 the percent of the axial length of protuberance.In this way, aerofluxus and the reagent advanced along upper surface 810 will deflect radially, and directed in a radially outward direction through aerofluxus and the reagent of mixing fin 806 traveling.
Depict another at Figure 29 and Figure 30 place and substitute blender 900.Blender 900 is somewhat similarly to blender 700, and wherein, hybrid element 902,904,906,908 is each shaped as substantially planar flat board.These hybrid elements can optionally include the mixing fin not being depicted as being identified with the mixing fin of " a " suffix shown in Figure 29 and Figure 30 but in Figure 26 and Figure 27.At least one hybrid element in the hybrid element of blender 900 can also include being similar to the deflecting element extended outwardly with the deflecting element 716 revising fin 712a.After lead mixing fin can also be positioned on the one or more hybrid elements in the hybrid element of blender 900, its be substantially similar to be identified with in Figure 25 to Figure 27 " b " suffix those mixing fins.One or more hybrid elements in the hybrid element of blender 900 can also include being similar to the mixing fin that the outside spacers of those the mixing fins identified about blender 700 are opened by " c " suffix of small letter.
Blender 900 includes ring 912, and this ring includes preceding limb 914 and rear guide margin edge 916.Leading collar portion 918 is shaped as the cylinder substantially axially extending to transition wire 920 from preceding limb 914.Rear guide sleeve ring part 924 is also formed as cylinder substantially.Rear guide sleeve ring part 924 is extended to the over branch-cut bridge 926 from rear guide margin edge 916.The external diameter of leading collar portion 918 is equal to the diameter of rear guide sleeve ring part 924.Swedged middle body 930 is axially positioned between leading collar portion 918 and rear guide sleeve ring part 924.Middle body 930 and leading collar portion 918 are interconnected by conical or otherwise the first expansion 934.In a similar manner, middle body 930 and rear guide sleeve ring part 924 are interconnected by the second expansion or conical portion 938.It is contemplated that ring 912 is the uninterrupted continuously ring being configured to by the metal material with substantial constant wall thickness.
Ring 912 includes aperture pair: 948a, 948b；950a、950b；952a、952b；With 954a, 954b.Each aperture is substantially similar to another aperture and only will be described in an aperture.Aperture 948a includes axial continuation the 960, first circumferential extension 962 and the second circumferential extension 964.Axial continuation 960 terminates in the first edge 968 place in centrally located part 930.Edge 968 does not extend in the first expansion 934 or leading collar portion 918.So, edge 968 extends to the outer cylinder surface 972 of middle body 930 from the inner periphery 970 of middle body 930.Axial continuation 960 terminates in opposite edge 978 place.Part 960 extends up to rear guide sleeve ring part 924.Axial continuation 960 extends through the second deploying portion 938.Circumferential extension 962 and 964 at least partially defines pliable contact pin 982.
The technique such as welded is utilized to be fixed on the far-end 986 of contact pin 982 by hybrid element 902.Do not describe pad in the accompanying drawings.Hybrid element 902 is spaced apart with the remainder of ring 912, except at its opposite ends place, hybrid element 902 be fixed at this place with on the far-end of aperture 948b another contact pin associated.Contact pin 982 plays the effect of spring with it with the aperture 948b mating section associated, and its deflection accounts for the thermal coefficient of expansion by hybrid element 902.Change in the running temperature of blender 900 is by allowing contact pin to bend solve along with the change width of hybrid element.By making hybrid element 902 only be connected in contact pin 982 and its mating portion office with ring 912, manufacture is made to simplify by the use simply welded being applied on the outer surface 972 of the middle body 930 that contact pin 982 contacts with hybrid element 902.Pad is still from the external diameter radial inward location limited by leading collar portion 918 and rear guide sleeve ring part 924.
The overall width of hybrid element 902 is defined as projecting through aperture 948a and 948b and exceedes the surface 972 of middle body 930.Also setting the size of the width of hybrid element 902, this size guarantees that this hybrid element does not protrude past leading collar portion 918 and the outer cylinder surface of rear guide sleeve ring part 924.Preferably, the string of the close inner periphery 988 extending across rear guide sleeve ring part 924 of the width of hybrid element 902.Relative dimensions between the feature of hybrid element 902 and ring 912 allows by being inserted by hybrid element 902 along the longitudinal axis translation limited by the axial continuation of aperture 948a, 948b by this hybrid element.The distance that hybrid element 902 can be inserted in ring 912 is to be limited by the axial location at edge 968.The preceding limb 990 of hybrid element 902 is positioned adjacent to the minimum aperture place in edge 968 so that the reducing agent injected from blender 900 upstream blocks at least in part and do not contact with the hybrid element 902 of solder interconnections and ring 912.The size of remaining aperture 950a, 950b, 952a, 952b, 954a, 954b and shape are determined with the similar manner described previously with regards to aperture 948a, 948b and hybrid element 902.
Figure 31 depicts alternate collar 912a.Ring 912a is substantially similar to ring 912, except subtract undersized middle body 930a include ellipse or other non-circular transverse cross-sections.Inner surface 970a includes the some T of smallest radial protuberance inwardly and puts B.Due to the cross-sectional flow area near some T and the some B increase provided, relative to flowing through ring 912, aerofluxus flows through the restriction of ring 912a and is minimized.
The exemplary embodiment only disclosing and describing present disclosure discussed above.Those skilled in the art will be readily appreciated that from this discussion and from accompanying drawing and claims, when without departing from present disclosure as limit in claims below spirit and scope, it is possible to make different change, amendment and change wherein.

Claims (25)

1., for exhaust stream carries out the blender mixed with the fluid being injected in exhaustor, this blender includes:
Tubular shell, this tubular shell includes the first end, the second end and the middle body being positioned between these ends, this middle body has the size of reduction relative at least one end in this first end and this second end, this tubular shell includes circumferentially spaced multiple aperture, and these apertures are passed through this middle body between this first end and this second end and extend；
First hybrid element, this first hybrid element includes body, this body has the first peripheral part and the second week rim portion contrary with this first peripheral part, this first peripheral part is positioned in an aperture in these apertures, this second week rim portion is positioned in another aperture in these apertures, and these peripheral parts are fixed on this housing；And
Second hybrid element, this second hybrid element includes body, this body has the 3rd peripheral part and 4th week rim portion, 3rd peripheral part and this 4th week rim portion are positioned in other apertures in these apertures and are fixed on this housing, and this second hybrid element is spaced apart with this first hybrid element.
2. blender as claimed in claim 1, wherein, this middle body includes the contact pin in the aperture being positioned adjacent in these apertures, and this contact pin is coupled on this first hybrid element to make this contact pin and considers that this first hybrid element varies with temperature change in size and moves.
3. blender as claimed in claim 2, wherein, these apertures include axial continuation and multiple spaced apart circumferential extension, and this first hybrid element extends through an axial continuation in these axial continuation.
4. blender as claimed in claim 3, wherein, this first hybrid element radially outward protrudes past the outer surface of this middle body.
5. blender as claimed in claim 4, wherein, an aperture in these apertures is asymmetric and this housing includes the face of the edge in this aperture, and this face limits this first hybrid element distance being axially inserted in this housing.
6. blender as claimed in claim 1, wherein, this middle body is shaped as cylinder.
7. blender as claimed in claim 1, wherein, this middle body is shaped as non-cylinder.
8. blender as claimed in claim 2, wherein, this tubular shell and this contact pin are single-piece by unitary construction.
9. blender as claimed in claim 1, wherein, leading collar portion that this housing includes being positioned on the opposition side of this middle body and rear guide sleeve ring part, this leading collar portion and this rear guide sleeve ring part include the outer cylinder surface with first size, and this middle body includes the outer cylinder surface with the second size less than this first size.
10. blender as claimed in claim 1, wherein, this first hybrid element is parallel to this second hybrid element and extends.
11. blender as claimed in claim 1, wherein, this first hybrid element includes the mixing fin angularly extending to change exhaust stream direction with this body.
12. blender as claimed in claim 11, wherein, this first hybrid element includes deflecting element, and this deflecting element is positioned at the upstream of this mixing fin, in the position of the fluid impact injected.
13. blender as claimed in claim 12, wherein, this deflecting element includes being arranged essentially parallel to the substantially planar part that exhaust stream direction extends and the correction fin angularly extended with this exhaust stream direction.
14. blender as claimed in claim 13, wherein, this deflecting element becomes the angle of substantially 30 degree to extend with the exhaust stream direction of this blender upstream.
15. blender as claimed in claim 14, wherein, this mixing fin becomes substantially from the angle extension in the scope of 40 degree to 45 degree relative to the direction of the exhaust stream of this blender upstream.
16. for exhaust stream carries out the blender mixed with the fluid being injected in exhaustor, this blender includes:
Tubular shell, this tubular shell includes being positioned in the leading collar portion at open upstream termination place of this housing, the contrary open end of this housing and middle body in-between, this middle body has the outside dimension of reduction and the inside dimension of reduction compared with this leading collar portion, and this middle body includes spaced apart multiple apertures；And
Hybrid element, this hybrid element be positioned in this housing and extend in these apertures two apertures in, multiple positions in this hybrid element each aperture in being adjacent to the two aperture are fixed on this middle body of this housing.
17. blender as claimed in claim 16, wherein, this housing includes the first expansion of this leading collar portion with the interconnection of this middle body.
18. blender as claimed in claim 16, wherein, these apertures each include axial continuation and multiple spaced apart circumferential extension, and this hybrid element extends through an axial continuation in these axial continuation.
19. blender as claimed in claim 18, wherein, this tubular shell includes being positioned in this rear guide sleeve ring part opening end section on the contrary, and this rear guide sleeve ring part includes the outside dimension of inside dimension and the increase increased compared with this middle body.
20. blender as claimed in claim 18, wherein, this first end of this axial continuation terminates at stop surface place, and this stop surface limits this hybrid element amount being axially inserted in this housing.
21. blender as claimed in claim 18, wherein, these circumferential extension in an aperture in these apertures are positioned on the either side of contact pin, and this contact pin is fixed on this hybrid element.
22. blender as claimed in claim 21, wherein, this hybrid element moves freely relative to this housing, except in this contact pin and another contact pin place.
23. blender as claimed in claim 19, wherein, this housing also includes the second expansion of this rear guide sleeve ring part with the interconnection of this middle body.
24. blender as claimed in claim 23, wherein, the axial continuation in these apertures includes the first end terminated in this middle body and the second end terminated in this second expansion or this rear guide sleeve ring part.
25. blender as claimed in claim 16, wherein, the inner surface of this housing is cylindrical and includes the inside dimension reduced.
CN201480064128.2A 2013-11-26 2014-11-19 Exhaust stream mixer Active CN105765193B (en)

Applications Claiming Priority (3)

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US14/089,822 US9095827B2 (en) 2008-04-21 2013-11-26 Exhaust gas flow mixer
US14/089,822 2013-11-26
PCT/US2014/066355 WO2015080917A1 (en) 2013-11-26 2014-11-19 Exhaust gas flow mixer

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CN105765193B (en) 2018-07-17

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