A kind of disturbing flow device of diesel motor exhaust post-processing
Technical field
The invention belongs to diesel engine realms, fill more particularly, to a kind of flow-disturbing of diesel motor exhaust post-processing
It sets.
Background technique
When diesel engine (vehicle) tail gas is by ART(Active Regeneration Treatment) system, first by oxidized form
Catalyst converter (DOC), by oxidation catalysis, is converted to water and carbon dioxide to carbon monoxide in tail gas exhaust and hydrocarbon.Again
The finely ground particles in tail gas are trapped by particulate filter (DPF), when the delay of particulate matter is so that exhaust back pressure reaches
When systemic presupposition value, automatic starting ignition heat riser regenerates the particulate matter being deposited in particulate filter, uses
The device can make (DPF) regeneration more evenly.In this case, it needs to disturb hot fluid caused by firing up device
Stream process, if firing up device may light a fire repeatedly, without flow-disturbing processing so as to cause particulate filter (DPF)
Local temperature it is excessively high and rupture.
Currently, the flow spoiler that there is some post-process for diesel motor exhaust on the market and be arranged, but these are disturbed
Stream device otherwise structure it is too simple and cause effect bad or be exactly result it is excessively complicated and cause design cost and manufacture at
This increase.
Summary of the invention
It is an object of the present invention to provide a kind of disturbing for diesel motor exhaust post-processing for insufficient present on
Flow device.
For this purpose, the present invention adopts the following technical scheme:
A kind of disturbing flow device of diesel motor exhaust post-processing, the disturbing flow device and diesel motor exhaust post-process
The connection of firing up device, after mixed gases caused by the tail gas and firing up device that firing up device is heated
Enter disturbing flow device as mixed gas and carries out mixed processing;The disturbing flow device includes shell, the method that shell both ends are arranged in
Blue and setting equal splenium part inside housings and mixed component, are arranged transition between the equal splenium part and mixed component
Chamber, the adapter cavity is for accommodating the mixed gas after equal splenium part is pressed and being conveyed to mixing to the airflow downstream of mixed gas
Component, the equal splenium part are used to carry out the mixed gas for entering disturbing flow device pressure to handle and make the pressure of mixed gas
It is able to equilibrium, the mixed component is used for carrying out mixed processing again through equal splenium part mixed gas of pressing that treated and make
It is sufficiently mixed by the mixed gas of mixed component, the mixed gas after mixed component mixed processing is sent into oxidized form catalysis
Device and particulate filter.The present invention is used in combination by equal splenium part and mixed component, to reach to firing up device
Mixed gas after mixed gases caused by the tail gas and firing up device heated carries out the effect of mixed processing, from
And reaching makes the permanent regeneration of DPF trap, ruptures caused by avoiding DPF trap from locally regenerating, and solves DPF trap frequency
Numerous regenerated problem.
Preferably, the equal splenium part includes equal pressing plate, and the equal pressing plate is equably arranged along the circumferential inner wall of shell;
The axis direction of the equal pressing plate and shell is angularly disposed at 60 ° ~ 80 °, and the inner wall of the equal pressing plate and shell is suitable at 60 ° ~ 80 °
Mixed gas airflow direction setting.The present invention makes mixed gas be capable of forming spiral shell by such set-up mode of equal pressing plate
Shape air-flow is revolved, and reduces the droop loss of mixed gas by such set-up mode.
Preferably, the mixed component includes mixed plate, and the mixed plate is equably arranged along the circumferential inner wall of shell;
The axis direction of the mixed plate and shell is angularly disposed at 60 ° ~ 80 °, and the inner wall of the mixed plate and shell is suitable at 60 ° ~ 80 °
Mixed gas airflow direction setting.The present invention enables spiral helicine mixed gas by such set-up mode of mixed plate
It is enough mixed, and pass through the droop loss of this set-up mode reduction mixed gas.
Preferably, equal pressing plate is angularly disposed counterclockwise along the axis direction of shell, mixed plate along shell axis side
To clockwise it is angularly disposed;Or pressing plate is angularly disposed clockwise along the axis direction of shell, mixed plate is along shell
Axis direction is angularly disposed counterclockwise.The present invention is the inclination of opposite direction by the equal pressing plate of setting and mixed plate, so as to
The helical form mixed gas air-flow handled through equal pressing plate pressure is enabled to be mixed plate mixed processing again at uniform
Mixed gas air-flow, thus the uniform mixing demand that further satisfaction is of the invention.
Preferably, equal pressing plate is 3, and mixed plate is 3;Equal pressing plate or mixed plate are the Axial-rotational Symmetry along shell
It is arranged on shell;The equal pressing plate of 3 be arranged on shell or 3 mixed plates on the flange at shell both ends be projected as containing
The annulus of equilateral triangle circular hole.
Preferably, the superposition projection of the equal pressing plate of 3 be arranged on shell and 3 mixed plates on the flange at shell both ends
For the annulus containing regular hexagon circular hole.
Preferably, equal pressing plate or mixed plate are the shape of half water droplet.The present invention is by being arranged equal pressing plate and mixed plate as half
The shape of water droplet may be not present disturbing flow device trapped inside and increase to only change the flow direction of disturbing flow device internal mix gas
The case where pressure is the droop loss to reduce mixed gas.
Preferably, meet between the equal pressing plate of equal splenium part and the mixed plate of mixed component along the distance of shell axis mixed
Plywood mixed gas through equal pressing plate convergence after convergent point in.The present invention improves mixed plate mixing by such set-up mode
The uniformity coefficient for mixed gas that treated.
Preferably, the shell includes internal and external double-layer, and inner sleeve is arranged in the equal splenium part and mixed component
Heat-insulation chamber is set between the barrel of both inside, inner sleeve and outer tube.The present invention completely cuts off enclosure interior by setting heat-insulation chamber
With external heat transfer, to reduce the heat loss of mixed gas.
Preferably, horn mouth is arranged along downstream one end of mixed gas airflow direction in the inner sleeve.The present invention passes through
Horn mouth is set in order to avoid bringing resistance to the air-flow of mixed gas and increasing intraductal pressure.
The present invention provides a kind of disturbing flow device of diesel motor exhaust post-processing, passes through technical side presented above
Case can be realized the permanent regeneration of DPF trap, avoid mixed gas mixing unevenly uneven to the heating of DPF trap and
The DPF trap partial fracture of generation, solves the problems, such as DPF trap frequent regeneration, through the invention provided flow-disturbing
Device enables to the area of 90% or more DPF trap that can regenerate, and prevents the blocking again in a short time of DPF trap
And promotes differential pressure pickup frequent transmission signal and make the frequent passive regeneration of DPF trap.
Detailed description of the invention
Fig. 1 is a kind of perspective view of the disturbing flow device of diesel motor exhaust post-processing provided by the present invention;
Fig. 2 is a kind of front section view of the disturbing flow device of diesel motor exhaust post-processing provided by the present invention;
Fig. 3 is a kind of solid of the inner sleeve of the disturbing flow device of diesel motor exhaust post-processing provided by the present invention
Figure;
Fig. 4 is a kind of bottom view of the disturbing flow device of diesel motor exhaust post-processing provided by the present invention;
Fig. 5 is the equal pressing plate or mixed plate of a kind of disturbing flow device of diesel motor exhaust post-processing provided by the present invention
Schematic diagram;
In figure: 1- shell;2- flange;The equal pressing plate of 3-;4- mixed plate;5- adapter cavity;101- inner sleeve;102- outer tube;
103- heat-insulation chamber;104- horn mouth.
Specific embodiment
The present invention is described in further detail referring to the drawings and specific embodiments.
A kind of disturbing flow device of diesel motor exhaust post-processing, the point of disturbing flow device and diesel motor exhaust post-processing
Fiery heat riser connects, and becomes after mixed gases caused by the tail gas and firing up device that firing up device is heated
Mixed gas enters disturbing flow device and carries out mixed processing;Disturbing flow device include shell 1, the flange 2 that shell both ends are set and
One group of equal pressing plate 3 and one group of mixed plate 4 inside housings is set, adapter cavity 5, transition are set between equal pressing plate 3 and mixed plate 4
Chamber 5 is for accommodating the mixed gas after equal pressing plate 3 is pressed and being conveyed to mixed plate 4, equal pressing plate 3 to the airflow downstream of mixed gas
It handles for carrying out pressure to the mixed gas for entering disturbing flow device and the pressure of mixed gas is made to be able to equilibrium, mixed plate 4
For carrying out mixed processing again to mixed gas of pressing that treated through equal pressing plate 3 and making the mixed gas by mixed plate 4
It is sufficiently mixed, the mixed gas after 4 mixed processing of mixed plate is sent into oxidation catalyst and particulate filter.
Equal pressing plate 3 is equably arranged along the circumferential inner wall of shell 1;The axis direction of equal pressing plate 3 and shell 1 at 60 ° ~
80 ° angularly disposed, and the inner wall of equal pressing plate 3 and shell 1 is arranged at 60 ° ~ 80 ° airflow directions along mixed gas.
Mixed plate 4 is equably arranged along the circumferential inner wall of shell 1;The axis direction of mixed plate 4 and shell 1 at 60 ° ~
80 ° angularly disposed, and the inner wall of mixed plate 3 and shell 1 is arranged at 60 ° ~ 80 ° airflow directions along mixed gas.
Equal pressing plate 3 is angularly disposed counterclockwise along the axis direction of shell 1, and mixed plate 4 is suitable along the axis direction of shell 1
Hour hands are angularly disposed;Or pressing plate 3 is angularly disposed clockwise along the axis direction of shell 1, mixed plate 4 is along shell 1
Axis direction is angularly disposed counterclockwise.
Equal pressing plate 3 is 3, and mixed plate 4 is 3;Equal pressing plate 3 or mixed plate 4 are to set along the Axial-rotational Symmetry of shell 1
It sets on shell;The equal pressing plate 3 of 3 be arranged on shell 1 or 3 mixed plates 3 are projected as on the flange 2 at 1 both ends of shell
Annulus containing equilateral triangle circular hole.Method of equal pressing plate 3 and 3 mixed plate 4 of 3 be arranged on shell 1 at 1 both ends of shell
Superposition on orchid 2 is projected as the annulus containing regular hexagon circular hole.
Distance between equal pressing plate and mixed plate along shell axis is 120 ~ 130 mm.
Shell 1 includes internal and external double-layer, and the inside of inner sleeve 101, inner sleeve 101 is arranged in equal pressing plate 3 and mixed plate 4
Heat-insulation chamber 103 is set between the barrel of both outer tubes 102.
Horn mouth 104 is arranged along downstream one end of mixed gas airflow direction in inner sleeve 101.
Above-mentioned specific embodiment is used to illustrate the present invention, is merely a preferred embodiment of the present invention, rather than
Limit the invention, within the spirit of the invention and the scope of protection of the claims, to the present invention make any modification,
Equivalent replacement, improvement etc., both fall within protection scope of the present invention.