CN107427754A - Demister unit and egr system - Google Patents
Demister unit and egr system Download PDFInfo
- Publication number
- CN107427754A CN107427754A CN201680019091.0A CN201680019091A CN107427754A CN 107427754 A CN107427754 A CN 107427754A CN 201680019091 A CN201680019091 A CN 201680019091A CN 107427754 A CN107427754 A CN 107427754A
- Authority
- CN
- China
- Prior art keywords
- discharge opeing
- demister
- housing
- main body
- discharge
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/10—Venturi scrubbers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/35—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters
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- 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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
Abstract
The present invention provides a kind of demister unit and egr system, can suppress water and be flow backwards from discharge opeing guide portion to demister main body and can realize the raising of demisting efficiency.It is provided with demister unit and egr system：In hollow form and provided with fluid inlet portion (61) and export department (62) housing (51)；The demister main body (52) of defogging is removed from exhaust in housing (51)；The discharging tube (discharge opeing guide portion) (53) for being connected to the bottom of demister main body (52) and guiding the mist isolated by demister main body (52) downwards；And the storage part (sealing) (67) for preventing exhaust from being flowed into from discharging tube (53) to demister main body (52).
Description
Technical field
The present invention relates to, except the demister unit of defogging, be applicable the egr system of the demister unit from exhaust.
Background technology
Due to containing mist in the exhaust discharged via wet type exhaust gas treatment device from boiler, it is therefore desirable to institute in the exhaust
The mist contained is removed.As the device removed to mist contained in exhaust, such as have described in following patent documents 1
Demister and defogger.Wet type exhaust gas treatment device described in the patent document 1 is by the exhaust from boiler from gas approach
Gas wash tower is imported, after the coal dust in exhaust is removed at this, the mist in exhaust is carried out when exhaust passes through gas wash tower demister
Remove.
Exhaust gas recirculatioon (EGR) be additionally, there are to reduce the NOx in exhaust.This EGR is by from the combustion chamber of internal combustion engine
A part for the exhaust of discharge returns to combustion chamber as burning with gas.Thus, the oxygen concentration of burning gas reduces, by subtracting
The speed for the i.e. burning of reaction that deflagration material is carried out with oxygen reduces ignition temperature, can reduce NOx yield.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 08-131764 publications
Invent problem to be solved
Conventional demister is made from the exhaust that entrance imports in bending stream in demister main body by making
Contained mist separates with bending the collision with wall of stream.Demister main body is connected with discharging tube in bottom, is separated from exhaust
The mist gone out is stored into the tank of bottom by discharging tube.But demister in the air blower of outlet connection by internally being inhaled
Draw, import and be vented from entrance.Therefore, the outlet side of the demister main body of demister turns into negative pressure.Then have from discharging tube
Water in the suction tank of bottom and flow back to worry as demister main body.
The content of the invention
The present invention makes to solve the above problems, and its object is to provide one kind to suppress water from discharge opeing guiding
Flow backwards to demister main body and the demister unit and egr system of the raising of demisting efficiency can be realized in portion.
The means used to solve the problem
Demister unit of the invention in order to achieve the above object is characterised by possessing：Housing, set in the housing
There are inlet portion and the export department of fluid；Demister main body, the demister main body remove defogging in the housing from fluid；Discharge opeing
Guide portion, the discharge opeing guide portion are connected to the bottom of the demister main body and the institute that will be isolated by the demister main body
Mist is stated to guide downwards；And sealing, the sealing prevent fluid from the discharge opeing guide portion to the demister main body
Flow into.
Therefore, be directed into fluid in housing by demister main body from inlet portion, thus remove contained mist, the mist by
Guided downwards from discharge opeing guide portion in deadweight.Now, due to being provided with sealing in discharge opeing guide portion, so even exporting
Portion side is negative pressure, and the fluid being directed into from inlet portion in housing also will not flow into demister main body by discharge opeing guide portion.Its
Flow backwards from discharge opeing guide portion to demister main body as a result, water can be suppressed and the raising of demisting efficiency can be realized.
The demister unit of the present invention is characterised by that the discharge opeing guide portion is base end part and the demister main body
The discharging tube of bottom connection, the sealing by the discharging tube water storage prevent the inflow of fluid.
Therefore, because discharge opeing guide portion is set into discharging tube, by sealing, water storage is sealed in the discharging tube,
Therefore demister main body can be flowed into by discharging tube to be easily prevented from fluid with simple structure.
The demister unit of the present invention is characterised by that the sealing is provided at the storage part of the discharging tube.
Therefore, storage part is provided with as sealing in discharging tube, therefore can simplify the structure of sealing.
The demister unit of the present invention is characterised by that the discharging tube possesses line part and bending section, the straight line
The upper end in portion is connected with the bottom of the demister main body, and the bending section is connected with the bottom of the line part and conduct
The storage part bent upward.
Therefore, by the way that bending section is set into storage part, fluid can be easily prevented to demister master with simple structure
Body flows backwards.
The demister unit of the present invention is characterised by, provided with discharge opeing discharge pipe and water tank, the discharge opeing discharge pipe
Discharge opeing in the housing to be discharged downwards, the water tank stores to the discharge opeing discharged from the discharge opeing discharge pipe,
The discharging tube is connected with the discharge opeing discharge pipe.
Therefore, by making discharging tube be connected with discharge opeing discharge pipe, discharge opeing discharge pipe, energy are flowed directly into from the mist of exhaust separation
Reduce the pipe arrangement set to water tank.
The demister unit of the present invention is characterised by that in the discharging tube, the seal portion configurations are in the housing
Outside.
Therefore,, can be easily when sealing is by foreign matters from being blocked by making the seal portion configurations of discharging tube in the outside of housing
Ground removes the foreign matter, can improve maintainability.
The demister unit of the present invention is characterised by, provided with discharge opeing discharge pipe and water tank, the discharge opeing discharge pipe
Discharge opeing in the housing to be discharged downwards, the water tank stores to the discharge opeing discharged from the discharge opeing discharge pipe,
The discharging tube is in the housing inner opening.
Therefore, by making discharging tube to minimize discharging tube, manufacturing cost can be reduced in housing inner opening.
The demister unit of the present invention is characterised by that the sealing is provided at the storage part of the housing, the row
The top ends of liquid pipe connect with the storage part.
Therefore, by making the top ends of discharging tube be connected with the storage part of housing, without changing the shape of discharging tube with regard to energy
The discharging tube is sealed, structure can be simplified and reduce cost.
The demister unit of the present invention is characterised by, provided with discharge opeing discharge pipe and water tank, the discharge opeing discharge pipe
Discharge opeing in the housing to be discharged downwards, the water tank stores to the discharge opeing discharged from the discharge opeing discharge pipe,
By making position opening of the upper end of the discharge opeing discharge pipe above the bottom than the housing set the storage part.
Therefore, by making position opening of the upper end of discharge opeing discharge pipe above the bottom than housing form water storage
Portion, storage part can be readily formed in housing, structure can be simplified.
The demister unit of the present invention is characterised by, provided with discharge opeing discharge pipe and water tank, the discharge opeing discharge pipe
Discharge opeing in the housing to be discharged downwards, the water tank stores to the discharge opeing discharged from the discharge opeing discharge pipe,
By fixing demarcation strip in the bottom of the housing to set the storage part.
Therefore, by fixing demarcation strip in the bottom of housing to form storage part, water storage can be readily formed in housing
Portion, structure can be simplified.
The demister unit of the present invention is characterised by that the demarcation strip forms tap in bottom.
Therefore, accumulate in the foreign matter of storage part easily can discharge from tap.
The demister unit of the present invention is characterised by, is communicated with pipe, the communicating pipe connects the described of the housing
Export department and the top of the water tank.
Therefore, the export department of housing turns into negative pressure due to the effect of the suction of air blower, and the negative pressure is acted on by communicating pipe
In the top of water tank, therefore rightly can be discharged in housing from the mist of exhaust separation from discharge opeing drainpipe to water tank.
In addition, the egr system of the present invention is characterised by possessing：Exhaust gas recirculatioon route, the exhaust gas recirculatioon route
Recycled a part for the exhaust discharged from engine as a part for burning gas to the engine；Washer,
The washer to the exhaust flowed in the exhaust gas recirculatioon route by spraying water to remove harmful substance；And demister
Unit, the demister unit is imported from the exhaust of washer discharge.
Therefore, for the exhaust discharged from engine, when one part is by exhaust gas recirculatioon route, washer is passed through
The exhaust for flowing through the exhaust gas recirculatioon route is sprayed water and removes harmful substance, by demister unit remove included mist it
Afterwards, resupply to engine.Now, in demister unit, the fluid being directed into from inlet portion in housing passes through demister master
Body, thus removes contained mist, and the mist is guided downwards due to deadweight from discharge opeing guide portion.Now, due to being guided in discharge opeing
Portion is provided with sealing, even if turning into negative pressure in outlet side, the fluid being directed into from inlet portion in housing will not also be drawn by discharge opeing
Lead portion and flow into demister main body.As a result, water can be suppressed flow backwards and can realize from discharge opeing guide portion to demister main body to remove
The raising of mist efficiency.
The effect of invention
According to the demister unit and egr system of the present invention, water can be suppressed and fallen from discharge opeing guide portion to demister main body
Flow and the raising of demisting efficiency can be realized.
Brief description of the drawings
Fig. 1 is the outline for showing to possess the diesel engine of the egr system for the demister unit for applying the 1st embodiment
Figure.
Fig. 2 is the summary construction diagram for the egr system for showing the 1st embodiment.
Fig. 3 is the longitudinal section for the demister unit for showing the 1st embodiment.
Fig. 4 is the horizontal cross for the demister unit for showing the 1st embodiment.
Fig. 5 is the longitudinal section of the inlet portion for the demister unit for showing the 2nd embodiment.
Fig. 6 is the longitudinal section of the inlet portion for the demister unit for showing the 3rd embodiment.
Fig. 7 is the side view of the discharging tube and the connecting portion of discharge opeing discharge pipe that show the 3rd embodiment.
Fig. 8 is the longitudinal section for the demister unit for showing the 4th embodiment.
Fig. 9 is the longitudinal section for the demister unit for showing the 5th embodiment.
Figure 10 is the stereogram for the demarcation strip for showing the 5th embodiment.
Embodiment
The preferred embodiment of demister unit and egr system involved in the present invention is carried out referring to the drawings
Describe in detail.In addition, this embodiment is not limitation of the invention, in addition, in the case where there is multiple embodiments,
Also the structure combined comprising each embodiment.
[the 1st embodiment]
Fig. 1 is the outline for showing to possess the diesel engine of the egr system for the demister unit for applying the 1st embodiment
Figure.Fig. 2 is the summary construction diagram for the egr system for showing the 1st embodiment.
In the 1st embodiment, as shown in figure 1, marine diesel engine 10 possesses：Engine main body 11, booster 12,
And egr system 13.
As shown in Fig. 2 engine main body 11 is to carry out rotation drive with propeller to propulsion via propeller shaft (not shown)
The engine (sustainer) of dynamic propulsion.The engine main body 11 is single current scavenging diesel engine, and two-stroke bavin
Oil turbine, the flowing of air inlet in cylinder and exhaust is turned into upward unidirectional from below and remained without being vented.Start
Owner's body 11 possesses：Multiple cylinders (combustion chamber) 21 that piston moves up and down, the scavenging air trunk 22 connected with each cylinder 21 and
The exhaust manifold 23 connected with each cylinder 21.Moreover, scavenging port 24 is provided between each cylinder 21 and scavenging air trunk 22, in each gas
Exhaust flow path 25 is provided between cylinder 21 and exhaust manifold 23.Moreover, in engine main body 11, scavenging air trunk 22 and supply circuit
G1 connections, exhaust manifold 23 are connected with exhaust lay out G2.
Compressor 31 and turbine 32 are rotatably connected and formed by booster 12 by the one of rotary shaft 33.Should
Booster 12 rotates turbine 32 by the exhaust of the exhaust lay out G2 discharges from engine main body 11, the rotation of turbine 32
Compressor 31 is passed to by rotary shaft 33 to be rotated, after air and/or recycling gas are compressed by the compressor 31
Supplied from supply circuit G1 to engine main body 11.Compressor 31 from the suction circuit G6 of outside (air) suction air with connecting
Connect.
Booster 12 is connected with the exhaust lay out G3 for discharging the exhaust for rotating turbine 32.Exhaust lay out G3 with not
Chimney (chimney) connection of diagram.In addition, it is provided with egr system 13 between exhaust lay out G3 to supply circuit G1.
Egr system 13 possesses：Exhaust gas recirculatioon circuit G4, G5, G7, washer 42, demister unit 14 and EGR drums
Blower fan (pressure fan) 47.A part for the exhaust discharged from marine diesel engine 10 is mixed it by the egr system 13 with air
Afterwards, recycled after being compressed by booster 12 as burning gas in marine diesel engine 10, thereby inhibiting burning causes
NOx generation.In addition, a part for exhaust is evacuated from the downstream of turbine 32 herein, but can also be from turbine
The upstream side of machine 32 is evacuated to a part for exhaust.
In addition, in the following description, exhaust refers to be discharged to after exhaust lay out G2 again from exhaust from engine main body 11
Circuit G3 recycles the part that gas refers to isolate from exhaust lay out G3 and is vented by exhaust again to the gas of outside discharge
Recycle circuit G4, G5, G7 return to the gas of engine main body 11.
Exhaust gas recirculatioon circuit G4 one end is connected with exhaust lay out G3 middle part.It is provided with exhaust gas recirculatioon circuit G4
EGR entrance valve (open and close valve) 41A, the other end are connected with washer 42.EGR entrance valve 41A passes through to exhaust gas recirculatioon circuit G4
It is opened and closed, come to from exhaust lay out G3 to the exhaust gas recirculatioon circuit G4 exhausts shunted connect/close.In addition, also may be used
To be to be adjusted EGR entrance valve 41A to the flow of the exhaust by exhaust gas recirculatioon circuit G4 as flow rate regulating valve.
Washer 42 is venturi type washer, is possessed：In the neck 43 of hollow form, the venturi portion of importing exhaust
44 and the expansion section 45 of original flow velocity is returned to by stages.Washer 42 possesses water spray portion 46, to being directed into venturi
The exhaust in portion 44 is sprayed water.Washer 42 and the row to eliminating harmful substance as the particulate matters such as SOx or coal dust (PM)
Gas connects with the exhaust gas recirculatioon circuit G5 that the draining comprising harmful substance is discharged.In addition, conduct in the present embodiment
Washer employs venturi type, but is not limited to this structure.
Demister unit 14 and EGR air blowers 47 are provided with exhaust gas recirculatioon circuit G5.
Demister unit 14 to by water spray eliminate harmful substance exhaust and draining separate.In demister unit
14 are provided with the discharge cycle circuit W1 in the water spray portion 46 of discharge cycle to washer 42.Moreover, in discharge cycle circuit W1
Hold-up tank 49 and pump 50 provided with interim storage draining.
EGR air blowers 47 guide the exhaust in washer 42 from exhaust gas recirculatioon circuit G5 to demister unit 14.
While exhaust gas recirculatioon circuit G7 one end is connected with EGR air blowers 47, the other end (saves sketch map via blender
Show) it is connected with compressor 31, sent and be vented to compressor 31 by EGR air blowers 47.EGR is provided with exhaust gas recirculatioon circuit G7
Outlet valve (open and close valve or flow rate regulating valve) 41B.Air from suction circuit G6 and the row from exhaust gas recirculatioon circuit G7
Gas (recycling gas) carries out being blended to produce burning gas in gaseous mixture.In addition, the blender both can be with muffler point
Open up and put, can also be configured to not set blender in addition, and the work(mixed to exhaust and air is added on muffler
Energy.Moreover, booster 12 can supply the burning gas after being compressed by compressor 31 from supply circuit G1 to engine main body 11,
Aerial cooler (cooler) 48 is provided with supply circuit G1.The aerial cooler 48 is compressed to turn into by making by compressor 31
The burning of high temperature carries out heat exchange with cooling water with gas and burning is cooled down with gas.
Above-mentioned demister unit 14 as shown in Figure 3 and Figure 4, possesses：Housing 51, demister main body 52, discharging tube (draw by discharge opeing
Lead portion) 53, discharge opeing discharge pipe 54 and water tank 55.
Housing 51 is in hollow, rectangular shape, is configured to be formed the container of inner space.That is, housing 51 is by upstream side wall
Portion 51a, downstream side of sidewall portion 51b, left and right sides wall portion 51c, top 51d, bottom 51e are formed as box-shaped.Housing 51 at one end portion (
Be right part in Fig. 3 and Fig. 4) upside formed import exhaust (arrow of solid line) and draining (arrow of dotted line) inlet portion
61, the export department 62 of discharge exhaust is on the other hand formed in the upside of the other end (being in figs. 3 and 4 left part).Moreover,
Inlet portion 61 is formed at upstream side of sidewall portion 51a, and export department 62 is formed at downstream side of sidewall portion 51b.The housing 51 follows again located at exhaust
On the G5 of loop wire road.
Demister main body 52 is arranged in housing 51, the exhaust for making to import from inlet portion 61 by demister main body 52, by
This is separated to being vented contained mist, and the exhaust eliminated after mist is guided to export department 62.Demister main body 52 exists
Inside, which is provided with, is vented the multiple stream (not shown) of the bending that can pass through, and is monolithically fabricated the plate body for snake.Housing 51 is from lead
Hang down the pars intermedia in direction and the pars intermedia of flow direction of exhaust is configured with demister support plate 63 towards downstream.The demister
Support plate 63 is the sheet material configured in the horizontal direction, and sidepiece is fixed on left and right sides wall portion 51c, and one end is fixed on downstream side of sidewall portion
51b.Demister main body 52 is arranged on the other end of demister support plate 63, and sidepiece is close to left and right sides wall portion 51c, upper end
It is close to top 51d.
Housing 51 is provided with upstream-side channel 64 between inlet portion 61 and demister main body 52, in demister main body 52 and goes out
Downstream path 65 is provided between oral area 62.In addition, housing 51 is provided with the lower section of demister support plate 63 and upstream-side channel
The lower side spatial portion 66 of 64 connections.It is downward that the mist that will be isolated by demister main body 52 is provided with the bottom of demister main body 52
The discharging tube 53 just guided.Discharging tube 53 is the linear pipe arranged along vertical, and demister support plate is run through in upper end
63 and it is connected with demister main body 52, bottom is open in the lower side spatial portion 66 of housing 51.
The discharge opeing discharge pipe 54 for discharging discharge opeing (draining) to the lower section of outside is provided with the bottom of housing 51.Discharge opeing is discharged
Pipe 54 is the linear pipe arranged along vertical, through the bottom 51e of housing 51.The bottom of discharge opeing discharge pipe 54 and storage
The top connection of water pot 55, can be stored in water tank 55 by the discharge opeing discharged from housing 51.The water tank 55 constitutes water process
A part for device, the water treatment facilities are handled the discharge opeing water for being stored in water tank 55.
Housing 51 is provided with storage part 67 in lower side spatial portion 66.By the upper end of discharge opeing discharge pipe 54 than housing 51
Bottom 51e above be higher by specified altitude H1 position opening and form storage part 67.Therefore, housing 51 makes to separate from exhaust
The mist gone out turns into discharge opeing water and accumulates in storage part 67, forms the liquid level WF of discharge opeing water.The liquid level WF of the discharge opeing water reaches discharge opeing
During the upper end of discharge pipe 54, the discharge opeing water just flows into inside from the opening of the upper end of discharge opeing discharge pipe 54, from water tank 55
Discharge.
But the downstream path 65 of demister main body 52 is via exhaust gas recirculatioon circuit G5 and the (reference of EGR air blowers 47
Fig. 2) connect, therefore turn into negative pressure due to the suction of the EGR air blowers 47.Then have from inlet portion 61 and be directed into upstream side
The exhaust of stream 64 is not flowed to the side of demister main body 52 but is sucked from the bottom of discharging tube 53 and flow back to demister master
Body 52 is such to be worried.Therefore, provided with the sealing for preventing the refluence (inflow) from discharging tube 53 to demister main body 52.
The sealing by discharging tube 53 water storage come prevent exhaust refluence, played located at the storage part 67 of housing 51
This function.That is, as it was previously stated, the opening of the upper end of discharge opeing discharge pipe 54 is located at the bottom 51e than housing 51
Specified altitude H1 position is higher by, the opening of the bottom of discharging tube 53 is higher by specified altitude located at the bottom 51e than housing 51
H2 position is, it is specified that height H2 is lower than specified altitude H1.Therefore, discharge opeing water of the bottom of discharging tube 53 with accumulating in storage part 67
Connection, at most only immerse height H (H=H1-H2).
In addition, the downstream path 65 of housing 51 is connected with the top (spatial portion) of water tank 55 by communicating pipe 68.Such as
Preceding described, the downstream path 65 of demister main body 52 turns into negative pressure, therefore by making the communicating pipe 68 play the work of balance pipe
With making demister unit 14 and the inside of water tank 55 press.In addition, upstream-side channel 64 can also be connected communicating pipe 68 with storing
The top of water pot 55.In this case, demister unit 14 and the inside of water tank 55 can be also made to press.
The effect to the egr system of the 1st embodiment illustrates below.
As shown in Fig. 2 for engine main body 11, when supplying burning gas into cylinder 21 from scavenging air trunk 22,
By piston the burning is compressed with gas, entered by the burning to the high temperature with gas injection fuel come spontaneous ignition
Row burning.Moreover, caused burning gases are discharged as exhaust from exhaust manifold 23 to exhaust lay out G2.From engine main body
The exhausts of 11 discharges the turbine 32 of booster 12 rotate it is rear discharged to exhaust lay out G3, as EGR entrance valve 41A and
When EGR outlet valve 41B is closed, all discharged from exhaust lay out G3 to outside.
On the other hand, when EGR entrance valve 41A and EGR outlet valve 41B are opened, the part of exhaust is from exhaust lay out G3
Flow to exhaust gas recirculatioon circuit G4.The exhaust (recycling gas) for flowing to exhaust gas recirculatioon circuit G4 has by the removing of washer 42
Evil material.That is, washer 42 exhaust at a high speed by venturi portion 44 when, by being sprayed water from water spray portion 46, by this
Water cools down to exhaust, and harmful substance is fallen and is removed together with water.Also, the draining comprising harmful substance
With flowing into demister unit 14 together with EGR gases.
The exhaust that harmful substance is eliminated by washer 42 is discharged to exhaust gas recirculatioon circuit G5, is passing through demister list
After member 14 has separated draining, booster 12 is sent to by exhaust gas recirculatioon circuit G7.Also, the exhaust with from suction circuit
The air of G6 suctions is mixed to burning gas, after being compressed by the compressor 31 of booster 12, is cooled down in air
Device 48 is cooled down, then is supplied from supply circuit G1 to engine main body 11.
The processing carried out herein to demister unit 14 illustrates.
As shown in Figure 3 and Figure 4, the exhaust for the upstream-side channel 64 being directed into from inlet portion 61 in housing 51 is flowed into positioned at just
The demister main body 52 in face, by being collided with the plate body of multiple bending streams, contained mist is attached to the plate body.Then,
The mist for being attached to the plate body of demister main body 52 flows to lower section due to deadweight, flows into the row for having run through demister support plate 63
The upper opening of liquid pipe 53.Also, the mist flowed into discharging tube 53 runs down into the lower side space of housing 51 by internal
Portion 66.
For housing 51, because the opening of the upper end of discharge opeing discharge pipe 54 is higher by rule positioned at the bottom 51e than housing 51
Determine height H1 position, the mist that the lower side spatial portion 66 of housing 51 is run down into from discharging tube 53 is stored in storage part 67.In addition,
The exhaust being directed into from inlet portion 61 in housing 51 carries mist, and discharge opeing water also is stored in storage part 67 caused by the mist.It is moreover, right
In storage part 67, when the liquid level WF of discharge opeing water rises to specified altitude H1, the discharge opeing water flows into discharge opeing discharge pipe 54, by this
Discharge opeing discharge pipe 54 is discharged to water tank 55.
In addition, when the liquid level WF of discharge opeing water rises to specified altitude H2, the bottom of discharging tube 53, which is submerged in, accumulates in storage
In the water in water portion 67, storage part 67 forms sealing.Therefore it can prevent from being directed into the exhaust of upstream-side channel 64 from inlet portion 61
It is inhaled into from the bottom of discharging tube 53 and flows backward to demister main body 52.Lead to further, since connecting downstream by interconnecting part 68
Road 65 and water tank 55, so the inside of the downstream path 65 and water tank 55 is pressed, therefore, by this point prevented also from row
Gas flows backward to demister main body 52 from the bottom of discharging tube 53.
On the other hand, the exhaust of mist is eliminated by demister main body 52 by downstream path 65 and from the row of export department 62
Go out.
It is provided with the demister unit of this 1st embodiment：In hollow, rectangular shape and provided with the He of inlet portion 61 of exhaust
The housing 51 of export department 62；The demister main body 52 of defogging is removed from exhaust in housing 51；With the bottom of demister main body 52
Connection and the discharging tube (discharge opeing guide portion) 53 for guiding the mist isolated by demister main body 52 downwards；And prevent exhaust
The storage part (sealing) 67 flowed into from discharging tube 53 to demister main body 52.
Therefore, exhaust in housing 51 is directed into by demister main body 52 from inlet portion 61, so as to remove contained mist,
The mist flows to lower section due to deadweight from discharging tube 53.Now, immersed due to the bottom of discharging tube 53 and accumulate in storage part 67
Discharge opeing water in, discharge opeing water immerse is provided with sealing herein.Thus, just can be easily by preventing from depositing with simple structure
It is that the exhaust of upstream-side channel 64 flows into demister main body 52 rightly to discharge discharge opeing water.
In the demister unit of 1st embodiment, discharge opeing guide portion is set to discharging tube 53, by being stored in discharging tube 53
Water prevents exhaust from flowing into as sealing.Specifically, sealing is used as provided with storage part 67 in housing 51, makes discharging tube 53
Bottom immerse storage part 67 discharge opeing water.Therefore, exhaust can be just easily prevented from simple structure and passes through discharging tube
53 flow into demister main body 52, can simplify structure and reduce cost.
Discharge opeing discharge pipe 54 and water tank 55, discharge opeing discharge pipe 54 are provided with the demister unit of the 1st embodiment
Discharge opeing in housing 51 is discharged downwards, water tank 55 stores to the discharge opeing discharged from discharge opeing discharge pipe 54, passes through
Make the upper end of discharge opeing discharge pipe 54 that storage part 67 is set in position opening closer to the top the bottom 51e than housing 51.Cause
This, by forming storage part 67 in housing 51, can be readily formed sealing, can simplify structure.
Be communicated with pipe 68 in the demister unit of the 1st embodiment, communicating pipe 68 to the export department 62 of housing 51 with
The top of water tank 55 is connected.Therefore, the export department 62 of housing 51 bears because the effect of the suction of EGR air blowers 47 turns into
Pressure, because the negative pressure is by acting on water tank 55 communicating pipe 68, therefore the export department 62 of housing 51 turns into equal with water tank 55
Pressure, the interior mist isolated from exhaust of housing 51 rightly can be discharged to water tank 55 from discharge opeing drainpipe 54.In addition, pass through setting
Communicating pipe 68, the internal diameter of discharging tube 54 can be reduced, and demister main body 52 can be reduced and the energy head of water tank 55 is poor, can realized
The compactedness of device.
In addition, the egr system of the 1st embodiment is provided with：Using the exhaust discharged from engine main body 11 it is a part of as
Exhaust gas recirculatioon circuit G4 recycling of the part for burning gas to engine main body 11；By to flowing through exhaust gas recirculatioon
Circuit G4 exhaust is sprayed water to remove the washer 42 of harmful substance；And import the demister for the exhaust discharged from washer 42
Unit 14.
Therefore, a part for the exhaust discharged from engine main body 11 is when by exhaust gas recirculatioon circuit G4, by washing
Device 42 is sprayed water to the exhaust for flowing through exhaust gas recirculatioon circuit G4 and removes harmful substance, by demister unit 14 remove containing
After mist, supply to transmitter main body 11.Now, in demister unit 14, it is vented by demister main body 52 to remove
The mist contained, lower section is flowed to from discharging tube 53.Now, because the bottom immersion of discharging tube 53 accumulates in the discharge opeing water of storage part 67
It is interior, immerse discharge opeing water herein and be provided with sealing.Therefore, the exhaust being directed into from inlet portion 61 in housing 51 will not pass through discharge opeing
Pipe 53 flows backward to demister main body 52.Flow backwards as a result, discharge opeing water can be suppressed from discharging tube 53 to demister main body 52 and energy
Improve demisting efficiency.
[the 2nd embodiment]
Fig. 5 is the longitudinal section of the inlet portion for the demister unit for showing the 2nd embodiment.In addition, for with it is upper
State the part of embodiment identical function, mark identical symbol and detailed description will be omitted.
In the 2nd embodiment, as shown in figure 5, demister unit 70 possesses：Housing 51, demister main body 52, discharging tube
(discharge opeing guide portion) 71, discharge opeing discharge pipe 72 and water tank 55.
In housing 51 formed with inlet portion 61 and export department 62, demister is configured between inlet portion 61 and export department 62
Main body 52.Discharging tube 71 is provided with the bottom of demister main body 52, discharging tube 71 is downward by the mist isolated by demister main body 52
Side's guiding.Discharging tube 71 is made up of line part 81, the 1st bending section 82 and the 2nd bending section 83.Line part 81 is along vertical side
To the linear pipe of arranging, upper end is connected through demister support plate 63 and with demister main body 52.1st bending section 82 is
The curvilinear pipe in U-shaped is seen in the front being bent upwards, and one end is connected with the bottom of line part 81.2nd bending section 83
It is that reclinate front is seen and is connected in inverted U-shaped curvilinear pipe, one end with the other end of the 1st bending section 82, separately
One end is relative to the upward opening of lower side spatial portion 66.
In addition, discharging tube 71 is not limited to the knot being made up of line part 81, the 1st bending section 82 and the 2nd bending section 83
Structure.For example, can be made up of the bending section 82 of line part 81 and the 1st, can also be curved in the bending section 82 and the 2nd of line part 81 and the 1st
Increase line part on the basis of pars convoluta 83, bending section etc. is formed, can also no line part 81 be only made up of the 1st bending section 82.
The discharge opeing discharge pipe 72 for discharging discharge opeing to outside is provided with housing 51.Discharge opeing discharge pipe 72 is matched somebody with somebody along vertical
If linear pipe, upper end is connected with the bottom 51e of housing 51, and bottom is connected with the top of water tank 55, can will be from
The discharge opeing that housing 51 is discharged is stored in water tank 55.
Housing 51 is fixed with hang plate 84,85 in bottom 51e.The hang plate 84,85 is open towards the bottom 51e in housing 51
Discharge opeing discharge pipe 72 upper end and tilt downwards.The hang plate 84,85 will flow into the discharge opeing water of housing 51 to discharge opeing
Discharge pipe 72 guides.
Provided with sealing, sealing prevents exhaust from flowing backwards (inflow) to demister main body 52 from discharging tube 71.The sealing
The 1st bending section 82 as storage part of discharging tube 71 is provided at, is open via the 2nd bending section 83 in lower side spatial portion 66.
The bending section as sealing is that the 1st bending section 82 in U-shaped is seen in front herein, or front is seen in the 1st curved of S shape
The bending section 83 of pars convoluta 82 and the 2nd.
Therefore, the exhaust for the upstream-side channel 64 being directed into from inlet portion 61 in housing 51, which flows into, is located at positive demister
Main body 52, by being collided with the plate body of multiple bending streams, contained mist is attached to the plate body.Then, it is attached to demisting
The mist of the plate body of device main body 52 flows to lower section due to deadweight, and inflow has run through the upper of the discharging tube 71 of demister support plate 63
Portion's opening.Also, the mist flowed into discharging tube 71 is by inside and runs down into the lower side spatial portion 66 of housing 51.
Because discharging tube 71 is made up of line part 81, the 1st bending section 82 and the 2nd bending section 83, discharging tube 71 is flowed into
Interior mist reaches the 1st bending section 82 from line part 81, temporarily accumulates in the 1st bending section 82 and is pushed away afterwards from the 2nd bending section 83
Go out, run down into the lower side spatial portion 66 of housing 51.Also, the discharge opeing water run down into from discharging tube 71 in housing 51, by inclining
Swash plate 84,85 flows into discharge opeing discharge pipe 54, is discharged by the discharge opeing discharge pipe 54 to water tank 55.
In addition, discharging tube 71 forms sealing by the way that discharge opeing water is accumulated in into the 1st bending section 82.Accordingly, it is capable to prevent from entering
The exhaust that oral area 61 is directed into upstream-side channel 64 is inhaled into from the bottom of discharging tube 71 and flows backward to demister main body 52.In addition,
Due to connecting downstream path 65 and water tank 55 by interconnecting part 68, so the inside of the downstream path 65 and water tank 55
Press, therefore, demister main body 52 is flowed backward to from the bottom of discharging tube 71 prevented also from exhaust by this.
On the other hand, the exhaust of mist is eliminated by demister main body 52 by downstream path 65 from the row of export department 62
Go out.
It is provided with the demister unit of this 2nd embodiment：Be connected with the bottom of demister main body 52 and will by except
The discharging tube (discharge opeing guide portion) 71 that the mist that day with fog main body 52 is isolated guides downwards；And it is vented as prevention from discharging tube
71 flow into the 1st bending section 82 of the storage part (sealing) of demister main body 52.
Therefore, exhaust in housing 51 is directed into by demister main body 52 from inlet portion 61, thus remove contained mist,
The mist flows to lower section due to deadweight from discharging tube 71.Now, because discharging tube 71 by discharge opeing water by accumulating in the 1st bending section
82 and be provided with sealing.Therefore, the exhaust being directed into from inlet portion 61 in housing 51 will not flow backward to demisting by discharging tube 71
Device main body 52.Flow backwards from discharging tube 71 to demister main body 52 as a result, discharge opeing water can be suppressed and demisting efficiency can be improved.
In addition, by forming the 1st bending section 82 in discharging tube 71, and provided with the sealing for accumulating discharge opeing water, only need to change
The shape of discharging tube 71, without becoming the shape of change housing 51, overall structure can be simplified.
In the 2nd embodiment, the line part 81 that is connected by upper end with the bottom of demister main body 52 and with it is straight
The bottom connection in line portion 81 and the 1st bending section 82 composition discharging tube 71 being bent upwards.Therefore, by the 1st bending section 82 with
Simple structure can be easily by preventing the exhaust for being present in upstream-side channel 64 from flowing into demister main body 52 rightly to arrange
Go out discharge opeing water.
In the demister unit of 2nd embodiment, discharging tube 71 is in the inner opening of housing 51.Accordingly, it is capable to make discharging tube 71 small
Type, manufacturing cost can be reduced.
[the 3rd embodiment]
Fig. 6 is the longitudinal section of the inlet portion for the demister unit for showing the 3rd embodiment.Fig. 7 be show discharging tube with
The side view of the connecting portion of discharge opeing discharge pipe.In addition, for identical with the part with above-mentioned embodiment identical function, mark
Symbol and detailed description will be omitted.
In the 3rd embodiment, as shown in Figure 6 and Figure 7, demister unit 90 possesses：Housing 51, demister main body 52,
Discharging tube (discharge opeing guide portion) 91, discharge opeing discharge pipe 72 and water tank 55.
Inlet portion 61 and export department 62 are formed in housing 51, demister main body is configured between inlet portion 61 and export department 62
52.Discharging tube 91 is provided with the bottom of demister main body 52, discharging tube 91 draws downwards the mist isolated by demister main body 52
Lead.Discharging tube 91 is made up of line part 101, the 1st bending section 102, the 2nd bending section 103 and the 3rd bending section 104.
Line part 101 is the linear pipe arranged along vertical, is configured in the lower side spatial portion 66 of housing 51,
Upper end is connected through demister support plate 63 and with demister main body 52, and bottom is open in the bottom 51e of housing 51 and connected.
1st, the 2nd, the 3rd bending section 102,103,104 configuration in the outside of the lower section of housing 51.1st bending section 102 is bent upwards
The curvilinear pipe in U-shaped is seen in front, and one end is connected with the bottom of line part 101.2nd bending section 103 is to be turned under
Bent front is seen to be connected in inverted U-shaped curvilinear pipe, one end with the other end of the 1st bending section 102.3rd bending section
104 be the curvilinear pipe of 90 degree of bendings, and one end is connected via bead 105 with the bottom of the 2nd bending section 103.
The discharge opeing discharge pipe 72 for discharging discharge opeing to the lower section of outside is provided with the bottom of housing 51, discharge opeing discharge pipe 72
Upper end is connected with the bottom 51e of housing 51, and bottom is connected with the top of water tank 55.Discharging tube 91 is in the vertical direction
Middle part is connected with the other end of the 3rd bending section 104.
Provided with sealing, sealing prevents exhaust from flowing backwards (inflow) to demister main body 52 from discharging tube 91.The sealing
The 1st bending section 102 as storage part of discharging tube 91 is provided at, via the 2nd bending section 103 and the 3rd bending section 104 and discharge opeing
Discharge pipe 72 connects.The bending section as sealing is positive the 1st bending section 102 seen in U-shaped herein.
Therefore, the exhaust for the upstream-side channel 64 being directed into from inlet portion 61 in housing 51, which flows into, is located at positive demister
Main body 52, by being collided with the plate body of multiple bending streams, contained mist is attached to the plate body.Then, it is attached to demisting
The mist of the plate body of device main body 52 flows to lower section due to deadweight, and inflow has run through the upper of the discharging tube 91 of demister support plate 63
Portion's opening.Also, the mist flowed into discharging tube 91 is by inside and runs down into the lower side spatial portion 66 of housing 51.
Because discharging tube 91 is by line part 101, the 1st bending section 102, the 2nd bending section 103 and the structure of the 3rd bending section 104
Into, therefore the mist flowed into discharging tube 91 reaches the 1st bending section 102 from line part 101, temporarily accumulates in the 1st bending section
Released after 102 from the 2nd bending section 103, then discharge opeing discharge pipe 72 is flowed into by the 3rd bending section 104.Moreover, from discharging tube
The discharge opeing water of 91 inflow discharge opeing discharge pipes 72 is discharged by the discharge opeing discharge pipe 72 to water tank 55.
In addition, discharging tube 91 forms sealing by the way that discharge opeing water is accumulated in into the 1st bending section 102.Accordingly, it is capable to prevent from entering
The exhaust that oral area 61 is directed into upstream-side channel 64 is inhaled into from the bottom of discharging tube 91 and flows backward to demister main body 52.
On the other hand, the exhaust that mist is eliminated with demister main body 52 is discharged by downstream path 65 from export department 62.
It is provided with the demister unit of this 3rd embodiment：It is connected with the bottom of demister main body 52 and will be by demisting
The discharging tube (discharge opeing guide portion) 91 that the mist that device main body 52 is isolated guides downwards；And it is vented as prevention from discharging tube 91
Flow into the 1st bending section 102 of the storage part (sealing) of demister main body 52.
Therefore, exhaust in housing 51 is directed into by demister main body 52 from inlet portion 61, thus remove contained mist,
The mist flows to lower section due to deadweight from discharging tube 91.Now, because discharging tube 91 by discharge opeing water by accumulating in the 1st bending section
102 and be provided with sealing.Therefore, the exhaust being directed into from inlet portion 61 in housing 51 will not flow backward to demisting by discharging tube 91
Device main body 52.Flow backwards from discharging tube 91 to demister main body 52 as a result, discharge opeing water can be suppressed and demisting efficiency can be improved.
In the demister unit of the 3rd embodiment, the bottom of discharging tube 91 connects with the middle part of discharge opeing discharge pipe 72
Connect.Therefore discharge opeing discharge pipe 72 is flowed directly into by discharging tube 91 from the mist of exhaust separation in demister main body 52, housing can be suppressed
The increase of discharge opeing water in 51.
In the demister unit of the 3rd embodiment, discharging tube 91 by by the 1st, the 2nd, the 3rd bending section 102,103,
104 configure in the outside of housing 51, the 1st bending section 102 of composition sealing is located at the outside of housing 51.Therefore, when the 1st,
When 2nd, the 3rd bending section 102,103,104 is by foreign matters from being blocked, the 1st can be removed, the 2nd, the 3rd bending section 102,103,104 remove it is different
Thing, maintainability can be improved.
[the 4th embodiment]
Fig. 8 is the longitudinal section for the demister unit for showing the 4th embodiment.In addition, for with above-mentioned embodiment party
The part of formula identical function, mark identical symbol and detailed description will be omitted.
In the 4th embodiment, as shown in figure 8, demister unit 110 possesses：Housing 51, demister main body 52, discharge opeing
Manage (discharge opeing guide portion) 111, discharge opeing discharge pipe 72 and water tank 55.
Inlet portion 61 and export department 62 are formed in housing 51, demister main body is configured between inlet portion 61 and export department 62
52.Discharging tube 111 is provided with the bottom of demister main body 52, discharging tube 111 is downward by the mist isolated by demister main body 52
Side's guiding.Discharging tube 111 is made up of line part 121 and bending section 122.
Line part 121 is the linear pipe arranged along vertical, is configured in the lower side spatial portion 66 of housing 51,
Upper end is connected through demister support plate 63 and with demister main body 52, and bottom is open in the bottom 51e of housing 51 and connected.
Bending section 122 is that curvilinear pipe in U-shaped is seen in the front being bent upwards, and is configured in the outside of the lower section of housing 51.Bending
The one end in portion 122 is connected with the bottom of line part 121, and the other end is open to bottom 51e and connected with upstream-side channel 64
Connect.The discharge opeing discharge pipe 72 for discharging discharge opeing to outside, the upper end of discharge opeing discharge pipe 72 and shell are provided with the bottom of housing 51
The bottom 51e connections of body 51, bottom is connected with the top of water tank 55.
Provided with sealing, sealing prevents exhaust from flowing backwards (inflow) to demister main body 52 from discharging tube 111.The sealing
It is provided at the bending section 122 as storage part of discharging tube 111.The bending section as sealing is that front is seen in U-shaped herein
Bending section 122.
Therefore, the exhaust for the upstream-side channel 64 being directed into from inlet portion 61 in housing 51, which flows into, is located at positive demister
Main body 52, by being collided with the plate body of multiple bending streams, contained mist is attached to the plate body.Then, it is attached to demisting
The mist of the plate body of device main body 52 flows to lower section due to deadweight, and inflow has run through the discharging tube 111 of demister support plate 63
Upper opening.In addition, the exhaust being directed into from inlet portion 61 in housing 51 carries discharge opeing water, the discharge opeing water is from upstream-side channel 64
Flow into discharging tube 111.
Due to being provided with bending section 122 in discharging tube 111, therefore the mist that flows into discharging tube 111 or from upstream-side channel
64 flow into the discharge opeing water of discharging tube 111, temporarily accumulate in the bending section 122 and form sealing.Afterwards, when bending section 122 is filled
During set solid liquid water, the mist flowed into discharging tube 111 is pushed out into upstream-side channel 64 by internal.Moreover, from discharging tube
The 111 discharge opeing water for flowing into upstream-side channel 64 are discharged by discharge opeing discharge pipe 72 to water tank 55.
In addition, discharging tube 111 forms sealing by the way that discharge opeing water is accumulated in into bending section 122.Accordingly, it is capable to prevent from entrance
The exhaust that portion 61 is directed into upstream-side channel 64 is inhaled into from discharging tube 111 and flows backward to demister main body 52.Further, since pass through
Interconnecting part 68 connects downstream path 65 and water tank 55, so the inside of the downstream path 65 and water tank 55 is pressed, because
This, demister main body 52 is flowed backward to by this prevented also from exhaust from the bottom of discharging tube 111.
On the other hand, the exhaust that mist is eliminated with demister main body 52 is discharged by downstream path 65 from export department 62.
It is provided with the demister unit of this 4th embodiment：It is connected with the bottom of demister main body 52 and will be by demisting
The discharging tube (discharge opeing guide portion) 111 that the mist that device main body 52 is isolated guides downwards；And it is vented as prevention from discharging tube
111 flow into the 1st bending section 122 of the storage part (sealing) of demister main body 52.
Therefore, contained mist is thus removed, is somebody's turn to do by demister main body 52 from the exhaust that inlet portion 61 is imported in housing 51
Mist flows to upstream-side channel 64 due to deadweight from discharging tube 111.Now, because discharging tube 111 is by the way that discharge opeing water is accumulated in
Bending section 122 and be provided with sealing.It is therefore possible to prevent the exhaust being directed into from inlet portion 61 in upstream-side channel 64 passes through discharge opeing
Pipe 111 flows backward to demister main body 52.As a result, can suppress discharge opeing water flow backwards from discharging tube 111 to demister main body 52 and
Demisting efficiency can be improved.
In the demister unit of the 4th embodiment, bending section 122, bottom and upstream effluent are provided with discharging tube 111
Road 64 connects.Accordingly, it is capable to supply the draining (arrow of dotted line) of exhaust institute band to bending section 122 and carry out water seal in early stage.
In the demister unit of the 4th embodiment, the bending section 122 of discharging tube 111 is configured in the outside of housing 51.Cause
This, when bending section 122 is by foreign matters from being blocked, can remove the bending section 122 and remove foreign matter, can improve maintainability.
[the 5th embodiment]
Fig. 9 is the longitudinal section for the demister unit for showing the 5th embodiment.Figure 10 is the stereogram for showing demarcation strip.
In addition, for the part with above-mentioned embodiment identical function, marking identical symbol and detailed description will be omitted.
In the 5th embodiment, as shown in Figure 9 and Figure 10, demister unit 130 possesses：Housing 51, demister main body
52nd, discharging tube (discharge opeing guide portion) 131, discharge opeing discharge pipe 72 and water tank 55.
Inlet portion 61 and export department 62 are formed in housing 51, demister main body is configured between inlet portion 61 and export department 62
52.Be provided with discharging tube 131 in the bottom of demister main body 52, discharging tube 131 by the mist isolated by demister main body 52 downwards
Guiding.Discharging tube 131 is the sweeping pipe of about 90 degree of bendings, is configured in the lower side spatial portion 66 of housing 51, on
End through demister support plate 63 and being connected with demister main body 52, bottom next door portion 123 be open and with upstream effluent
Road 64 connects.The discharge opeing discharge pipe 72 for discharging discharge opeing to the lower section of outside is provided with the bottom of housing 51.Discharge opeing discharge pipe 72
Upper end be connected with the bottom 51e of housing 51, bottom is connected with the top of water tank 55.
Provided with sealing, sealing prevents exhaust from flowing backwards (inflow) to demister main body 52 from discharging tube 131.Housing 51 exists
Demarcation strip 141 is fixed with above bottom 51e in upstream-side channel 64.The demarcation strip 141 separates regulation with wall part 123
Parallel configuration, multiple taps 142 are formed in bottom.Herein, multiple taps 142 can discharge foreign matter i.e. discharge opeing
Water.Above-mentioned sealing is in the storage part that is set by wall part 123 and demarcation strip 141 of upstream-side channel 64 of housing 51
143, the other end of discharging tube 131 connects through wall part 123.
Therefore, the exhaust for the upstream-side channel 64 being directed into from inlet portion 61 in housing 51, which flows into, is located at positive demister
Main body 52, by being collided with the plate body of multiple bending streams, contained mist is attached to the plate body.Then, it is attached to demisting
The mist of the plate body of device main body 52 flows to lower section due to deadweight, and inflow has run through the discharging tube 131 of demister support plate 63
Upper opening.Also, the mist flowed into discharging tube 131 flows by inside and to the upstream-side channel 64 of housing 51.
Upstream-side channel 64 is provided with storage part 143 by demarcation strip 141, due to the bottom and storage part of discharging tube 131
143 connections, therefore the storage part 143 of the mist flowed into discharging tube 131 stream 64 to the upstream side is flowed.Moreover, from discharging tube
The 131 discharge opeing water for flowing to storage part 143 are overflowed by multiple taps 142 or from demarcation strip 141 to flow into discharge opeing discharge pipe
72, discharged by the discharge opeing discharge pipe 72 to water tank 55.
In addition, discharging tube 131 forms sealing by the way that discharge opeing water is accumulated in into storage part 143.Accordingly, it is capable to prevent from entrance
The exhaust that portion 61 is directed into upstream-side channel 64 is inhaled into from discharging tube 131 and flows backward to demister main body 52.In addition, have exhaust
Discharge opeing water be mixed into the foreign matters such as unburned fuel or oil, the foreign matter accumulates in storage part 143 and reduces the storage capacity of discharge opeing water
Such worry.However, the foreign matter for being mixed into discharge opeing water is discharged by multiple taps 142 from storage part 143, water storage will not be reduced
The reservoir storage in portion 143.
On the other hand, the exhaust that mist is eliminated with demister main body 52 is discharged by downstream path 65 from export department 62.
It is provided with and is connected with the bottom of demister main body 52 and will be by demister in the demister unit of this 5th embodiment
The discharging tube (discharge opeing guide portion) 131 that the mist that main body 52 is isolated guides downwards, and pass through the bottom 51e's in housing 51
Fix demarcation strip 141 above and be provided with storage part (sealing) 143, the bottom of discharging tube 131 connects with storage part 143.
Therefore, exhaust in housing 51 is directed into by demister main body 52 from inlet portion 61, thus remove contained mist,
The mist flows to storage part 143 due to deadweight from discharging tube 131.Now, discharging tube 131 is by bottom and will accumulate in water storage
The discharge opeing water in portion connects and is provided with sealing.Therefore, the exhaust being directed into from inlet portion 61 in housing 51 will not pass through discharging tube
131 flow backward to demister main body 52.Flow backwards as a result, discharge opeing water can be suppressed from discharging tube 131 to demister main body 52 and energy
Improve demisting efficiency.
In the demister unit of the 5th embodiment, formed in demarcation strip 141 from storage part 143 and discharge foreign matter and discharge opeing
The tap 142 of water.Accordingly, it is capable to the foreign matter and discharge opeing water for accumulating in storage part 143 are easily discharged from tap 142.
In addition, in the above-mentioned 4th, the 5th embodiment, upstream-side channel 64 and lower side have been divided by wall part 123
Spatial portion 66, the downstream side of sidewall portion 51b for the housing 51 for forming lower side spatial portion 66 can also be removed by the wall part 123
Downside a part and bottom 51e downstream a part.That is, the line part 121 and discharging tube of discharging tube 111
131 can also be configured at the outside of housing 51.
In addition, in the above-described embodiment, although to a discharging tube 53,71,91,111,131 or discharge opeing drainpipe 54
It is illustrated, but more can also be set.In addition, though the export department 62 and the company on the top of water tank 55 of connection housing 51
Siphunculus 68 is located at the outside of housing 51, but the part of communicating pipe 68 can also be configured in housing 51.
In addition, in above-mentioned embodiment, the situation that sustainer is used as to marine diesel engine is illustrated, but
It is the diesel engine that can be also adapted for use as generator.
Symbol description
10 marine diesel oil transmitters
11 engine main bodies
12 boosters
13 egr systems
14,70,90,110,130 demister units
41A EGR entrance valves
41B EGR outlet valves
42 washers
47 EGR air blowers
48 aerial coolers (cooler)
51 housings
52 demister main bodys
53,71,91,111,131 discharging tubes (discharge opeing guide portion)
54,72 discharge opeing discharge pipes
55 water tanks
61 inlet portions
62 export departments
63 demister support plates
67,143 storage parts (sealing)
68 communicating pipes
81,121 line parts
82,122 the 1st bending sections (sealing, storage part)
83 the 2nd bending sections
84,85 hang plates
123 wall parts
141 demarcation strips
142 taps
G4, G5, G7 exhaust gas recirculatioon circuit
G6 sucks circuit
W1 discharge cycle circuits
Claims (according to the 19th article of modification of treaty)
1. a kind of demister unit (after modification), it is characterised in that possess：
Housing, the housing are provided with inlet portion and the export department of fluid；
Demister main body, the demister main body remove defogging in the housing from fluid；
Discharge opeing guide portion, the discharge opeing guide portion are connected to the bottom of the demister main body and will be by the demister main bodys point
The mist separated out guides downwards；
Sealing, the sealing prevent fluid from being flowed into from the discharge opeing guide portion to the demister main body；
Discharge opeing discharge pipe, the discharge opeing discharge pipe discharge downwards the discharge opeing in the housing；
Water tank, the water tank store to the discharge opeing discharged from the discharge opeing discharge pipe；And
Communicating pipe, the communicating pipe is by the upstream side path of demister main body upstream side described in the ratio of the housing or compares institute
The downstream path for stating demister main body side farther downstream connects with the top of the water tank.
2. demister unit as claimed in claim 1, it is characterised in that
The discharge opeing guide portion is the discharging tube that base end part is connected with the bottom of the demister main body, the sealing by
Water storage prevents the inflow of fluid in the discharging tube.
3. demister unit as claimed in claim 2, it is characterised in that
The sealing is provided at the storage part of the discharging tube.
4. demister unit as claimed in claim 3, it is characterised in that
The discharging tube possesses line part and bending section, and the upper end of the line part and the bottom of the demister main body connect
Connect, the bending section is connected with the bottom of the line part and as the storage part bent upward.
The demister unit of (5. after modification) as described in any one in Claims 1 to 4, it is characterised in that
The discharging tube is connected with the discharge opeing discharge pipe.
6. demister unit as claimed in claim 5, it is characterised in that
In the discharging tube, the seal portion configurations are in the outside of the housing.
7. the demister unit as described in any one in claim 2~4, it is characterised in that
Provided with discharge opeing discharge pipe and water tank,
The discharge opeing discharge pipe discharges downwards the discharge opeing in the housing, and the water tank from the discharge opeing discharge pipe to arranging
The discharge opeing gone out is stored,
The discharging tube is in the housing inner opening.
8. demister unit as claimed in claim 2, it is characterised in that
The sealing is provided at the storage part of the housing, and the top ends of the discharging tube connect with the storage part.
9. demister unit as claimed in claim 8, it is characterised in that
Provided with discharge opeing discharge pipe and water tank,
The discharge opeing discharge pipe discharges downwards the discharge opeing in the housing, and the water tank from the discharge opeing discharge pipe to arranging
The discharge opeing gone out is stored,
By making the upper end of the discharge opeing discharge pipe in the position opening more closer to the top than the bottom of the housing to set
State storage part.
10. demister unit as claimed in claim 8, it is characterised in that
Provided with discharge opeing discharge pipe and water tank,
The discharge opeing discharge pipe discharges downwards the discharge opeing in the housing, and the water tank from the discharge opeing discharge pipe to arranging
The discharge opeing gone out is stored,
By fixing demarcation strip in the bottom of the housing to set the storage part.
11. demister unit as claimed in claim 10, it is characterised in that
The demarcation strip forms tap in bottom.
(12. deletion)
13. a kind of egr system (after modification), it is characterised in that possess：
Exhaust gas recirculatioon route, the exhaust gas recirculatioon route is using a part for the exhaust discharged from engine as burning gas
A part for body recycles to the engine；
Washer, the washer to the exhaust flowed in the exhaust gas recirculatioon route by spraying water to remove nuisance
Matter；And
Demister unit as described in any one in claim 1~11, from the washer discharge exhaust import described in
Demister unit.
Illustrate or state (according to the 19th article of modification of treaty)
In the claim 1 of claims, discharge opeing discharge pipe, water tank and the structure of communicating pipe are added.Should
The foundation of modification is the claim 5 of claims and the record of the 0057th section of specification.
In the claim 5 of claims, the structure of discharge opeing discharge pipe and water tank is deleted, and have modified reference
.
Delete the claim 12. of claims
It has modified the referenced items of the claim 13 of claims.
Claims (13)
1. a kind of demister unit, it is characterised in that possess：
Housing, the housing are provided with inlet portion and the export department of fluid；
Demister main body, the demister main body remove defogging in the housing from fluid；
Discharge opeing guide portion, the discharge opeing guide portion are connected to the bottom of the demister main body and will be by the demister main bodys point
The mist separated out guides downwards；And
Sealing, the sealing prevent fluid from being flowed into from the discharge opeing guide portion to the demister main body.
2. demister unit as claimed in claim 1, it is characterised in that
The discharge opeing guide portion is the discharging tube that base end part is connected with the bottom of the demister main body, the sealing by
Water storage prevents the inflow of fluid in the discharging tube.
3. demister unit as claimed in claim 2, it is characterised in that
The sealing is provided at the storage part of the discharging tube.
4. demister unit as claimed in claim 3, it is characterised in that
The discharging tube possesses line part and bending section, and the upper end of the line part and the bottom of the demister main body connect
Connect, the bending section is connected with the bottom of the line part and as the storage part bent upward.
5. the demister unit as described in any one in claim 2~4, it is characterised in that
Provided with discharge opeing discharge pipe and water tank,
The discharge opeing discharge pipe discharges downwards the discharge opeing in the housing, and the water tank from the discharge opeing discharge pipe to arranging
The discharge opeing gone out is stored,
The discharging tube is connected with the discharge opeing discharge pipe.
6. demister unit as claimed in claim 5, it is characterised in that
In the discharging tube, the seal portion configurations are in the outside of the housing.
7. the demister unit as described in any one in claim 2~4, it is characterised in that
Provided with discharge opeing discharge pipe and water tank,
The discharge opeing discharge pipe discharges downwards the discharge opeing in the housing, and the water tank from the discharge opeing discharge pipe to arranging
The discharge opeing gone out is stored,
The discharging tube is in the housing inner opening.
8. demister unit as claimed in claim 2, it is characterised in that
The sealing is provided at the storage part of the housing, and the top ends of the discharging tube connect with the storage part.
9. demister unit as claimed in claim 8, it is characterised in that
Provided with discharge opeing discharge pipe and water tank,
The discharge opeing discharge pipe discharges downwards the discharge opeing in the housing, and the water tank from the discharge opeing discharge pipe to arranging
The discharge opeing gone out is stored,
By making the upper end of the discharge opeing discharge pipe in the position opening more closer to the top than the bottom of the housing to set
State storage part.
10. demister unit as claimed in claim 8, it is characterised in that
Provided with discharge opeing discharge pipe and water tank,
The discharge opeing discharge pipe discharges downwards the discharge opeing in the housing, and the water tank from the discharge opeing discharge pipe to arranging
The discharge opeing gone out is stored,
By fixing demarcation strip in the bottom of the housing to set the storage part.
11. demister unit as claimed in claim 10, it is characterised in that
The demarcation strip forms tap in bottom.
12. the demister unit as described in any one in claim 5~7,9~11, it is characterised in that
Pipe is communicated with, the communicating pipe connects the export department of the housing and the top of the water tank.
13. a kind of egr system, it is characterised in that possess：
Exhaust gas recirculatioon route, the exhaust gas recirculatioon route is using a part for the exhaust discharged from engine as burning gas
A part for body recycles to the engine；
Washer, the washer to the exhaust flowed in the exhaust gas recirculatioon route by spraying water to remove nuisance
Matter；And
Demister unit as described in any one in claim 1~12, from the washer discharge exhaust import described in
Demister unit.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015073758A JP6150834B2 (en) | 2015-03-31 | 2015-03-31 | Demister unit and EGR system |
| JP2015-073758 | 2015-03-31 | ||
| PCT/JP2016/059017 WO2016158571A1 (en) | 2015-03-31 | 2016-03-22 | Demister unit and egr system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107427754A true CN107427754A (en) | 2017-12-01 |
| CN107427754B CN107427754B (en) | 2020-05-05 |
Family
ID=57006733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680019091.0A Active CN107427754B (en) | 2015-03-31 | 2016-03-22 | Demister unit and EGR system |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6150834B2 (en) |
| KR (1) | KR102084835B1 (en) |
| CN (1) | CN107427754B (en) |
| WO (1) | WO2016158571A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372659A (en) * | 2018-10-26 | 2019-02-22 | 江苏中远环保科技有限公司 | A kind of energy-saving environmental protection device in control loop cooler |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3437718A1 (en) | 2017-08-01 | 2019-02-06 | Alfa Laval Corporate AB | A scrubber for cleaning of a gas |
| EP3437719A1 (en) | 2017-08-01 | 2019-02-06 | Alfa Laval Corporate AB | A scrubber for cleaning of a gas |
| KR102039913B1 (en) * | 2018-03-29 | 2019-11-05 | 삼성중공업 주식회사 | Scavenge air treatment system for ship |
| CN113803545A (en) * | 2021-10-29 | 2021-12-17 | 中船黄埔文冲船舶有限公司 | Drainage device for exhaust pipe |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2016158571A1 (en) | 2016-10-06 |
| JP2016193392A (en) | 2016-11-17 |
| JP6150834B2 (en) | 2017-06-21 |
| CN107427754B (en) | 2020-05-05 |
| KR102084835B1 (en) | 2020-03-04 |
| KR20170120685A (en) | 2017-10-31 |
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