CN101092899B - Exhaust gas receiver for a large two-stroke diesel engine - Google Patents
Exhaust gas receiver for a large two-stroke diesel engine Download PDFInfo
- Publication number
- CN101092899B CN101092899B CN2006100987979A CN200610098797A CN101092899B CN 101092899 B CN101092899 B CN 101092899B CN 2006100987979 A CN2006100987979 A CN 2006100987979A CN 200610098797 A CN200610098797 A CN 200610098797A CN 101092899 B CN101092899 B CN 101092899B
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- China
- Prior art keywords
- exhaust gas
- gas collector
- pressure distribution
- distribution pipeline
- chamber
- 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
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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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
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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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
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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
- F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
- F01N2260/06—Exhaust treating devices having provisions not otherwise provided for for improving exhaust evacuation or circulation, or reducing back-pressure
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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
- F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
- F01N2260/14—Exhaust treating devices having provisions not otherwise provided for for modifying or adapting flow area or back-pressure
Abstract
The invention relates to a long exhaust gas receiver for a large two-stroke diesel engine with a plurality of cylinders. The exhaust gas receiver is divided into several chambers longitudinally and is positioned with some exhaust gas inlet distributed along the length thereof. A pressure distribution pipe is arranged in parallel to the exhaust gas collector, which connects the outlet of the turbosupercharger near the longitudinal end of the exhaust gas receiver to the far chamber. The pressure distribution pipe is provided with one or more branches, which connect the inside of the pressure distribution pipe to the chamber more close to the outlet.
Description
Technical field
The present invention relates to a kind of exhaust gas collector that is used for large-scale two-stroke diesel engine, be specifically related to a kind of exhaust gas collector that is used to have the in line engine of a plurality of cylinders.
Background technique
The exhaust gas collector of large-scale two-stroke diesel engine is the high load assembly, and it receives hot (450 ℃) waste gas from the cylinder that each pressure is approximately 4 crust.On the limit of thermal force and pressure loading, this structure has been shaken in the vibration of motor, thereby has increased the mechanical load that acts on the exhaust gas collector further.(length can far above 10 meters) and High Operating Temperature because the large scale of exhaust gas collector, the thermal expansion of exhaust gas collector is very significant, and big-block engine has by corrugated portion and is divided into two or more receiver portions to absorb the exhaust gas collector of the dimensional changes that is caused by thermal expansion.Whole exhaust gas collector and arbitrarily under it parts cover by the insulating material of a bed thickness, thereby the temperature that makes the exhaust gas collector outer surface is far below the exhaust gas temperature in the exhaust gas collector.Safety standard requires the temperature of exhaust gas collector outer surface to be lower than 220 ℃, thereby makes the temperature of the engine components that expose can not be high enough to ignition engine fuel or other oil plant that by mistake contacts with it.In practice, exhaust gas collector outer surface good insulation performance and make its surface temperature remain under 150 ℃.
Angle from economy, for large-scale two-stroke diesel engine is provided with only single turbosupercharger near one of them longitudinal end of motor is most economical, transmits the longer transmission distance of waste gas and the problem that causes but exist from the cylinder of motor opposite end.In practice, large-scale two-stroke diesel engine is configured in line engine fully.Usually, the number of cylinder is from 5 to 14, and then the motor that obviously has a large amount of cylinders has very long length.Usually, described single turbosupercharger is installed in the end of large-scale two-stroke diesel engine.The exhaust gas collector longitudinal end the most approaching with secondary load device (server charger) is provided with outlet, and this outlet is directly connected in the inlet of turbosupercharger basically.Thereby, come from the whole length that the waste gas away from the cylinder at turbosupercharger place need pass motor.From the waste gas of the cylinder of close turbosupercharger must process distance obviously much smaller.Recently and the distance between the cylinder farthest may be greater than 10 meters.
In addition, because the waste gas of pulsation can cause unacceptable pressure surge, this large scale makes and is difficult to usually exhaust gas collector is configured to a big hollow cavity.Therefore, the space in the exhaust gas collector is divided into several chambeies by the partition wall that wherein has the aperture, and this has limited flowing between partitioned portion.Thereby, before arriving at turbosupercharger, the waste gas that comes from cylinder farthest need pass through several apertures, and the waste gas that comes from nearest chamber does not need through any aperture, therefore, at the pressure of exhaust gas collector far-end much larger than pressure in the exhaust gas collector proximal end.Since with compare near the cylinder of turbosupercharger, the thermal force of far-end cylinder with high back pressure is higher, has produced the problem that uneven distribution caused of the back pressure on the cylinder.For fear of the cylinder of high thermal force causes fire damage to having, must reduce the overall thermal load of all cylinders.The cylinder that this means contiguous turbosupercharger is not worked under optimum efficiency, thereby whole engine performance has reduced.
Therefore, need a kind of structure that be used for making the isostasy of microscler exhaust gas collector.
Summary of the invention
On this basis, an object of the present invention is to provide a kind of microscler exhaust gas collector, it has satisfied above-mentioned requirement at least in part.
By being provided, a kind of microscler exhaust gas collector that is used for large-scale two-stroke diesel engine realizes this purpose, described exhaust gas collector longitudinally is separated into nearly chamber, chamber far away and optional one or more intermediate cavity, described exhaust gas collector is provided with the exhaust gas entrance along its distribution of lengths, described exhaust gas collector comprises one of them the vertically terminal pressure distribution pipeline that extends at the partial-length of described exhaust gas collector from exhaust gas collector, described pressure distribution pipeline has the inlet opening that exit opening is used to connect turbosupercharger, described turbosupercharger be arranged on described one of them vertically terminal near, and described pressure distribution pipeline is connected at least wherein two chambeies with described outlet.
By the isostasy pipeline is set along exhaust gas collector, the difference in the back pressure that each cylinder is experienced has roughly obtained equilibrium.Thereby the thermal force on the cylinder distributes more equably, thereby all cylinders of motor can turn round near maximum load ground, thereby improves the overall performance of motor.
Preferably, described pressure distribution pipeline extends to chamber far away or extends to intermediate cavity from described outlet along exhaust gas collector.
Described pressure distribution pipeline can include the branch that is connected in nearly chamber or intermediate cavity or is connected in nearly chamber and intermediate cavity.
Described exhaust gas collector can include at least one and be arranged on intermediate cavity between described nearly chamber and the chamber far away.In this case, described pressure distribution pipeline is provided with another branch that at least one is connected in this intermediate cavity.
Preferably, described pressure distribution pipeline has maximum flow area from the part that outlet extends to first branch, and the pressure distribution pipeline becomes more and more littler until the flow area of the further part of pressure distribution pipe end after each branch.
Described exhaust gas collector can have a receiver portion that is divided into several chambeies, perhaps can have several receiver portions, and each all includes one or more chambeies in described several receiver portions.
Described pressure distribution pipeline can be side by side in described microscler exhaust gas collector setting, this exhaust gas collector is supported by at least one rigid strutting piece and at least one flexible strutting piece, described flexible strutting piece is configured to allow at described pressure distribution pipeline and motor length travel between the part of described pressure distribution pipeline is installed, with the difference in the thermal expansion of compensation between described engine section and pressure distribution pipeline.
Preferably, described pressure distribution pipeline is longitudinally fastening by described rigid support.
The housing of exhaust gas collector can comprise the interconnected receiver portion that two or more in-line arrangement are provided with.
By describing in detail, other purpose, feature, advantage and the performance of foundation exhaust gas collector of the present invention will become clear.
Description of drawings
In the detailed description of the present invention part, the present invention is carried out more detailed explanation hereinafter with reference to example embodiment illustrated in the accompanying drawings, wherein:
Fig. 1 is the long side surface view at the large-scale two-stroke motor of foundation one embodiment of the present invention,
Fig. 2 is the front end view of motor shown in Figure 1,
Fig. 3 is the plan view of motor shown in Figure 1,
Fig. 4 is the long side surface view at the large-scale two-stroke motor of another mode of execution of foundation the present invention, and
Fig. 5 is the front end view of motor shown in Figure 4.
Embodiment
Fig. 1 to 3 shows side view, front elevation and the plan view according to the motor 1 of the present invention's one preferred implementation respectively.Motor 1 is a kind of one-way flow low speed two stroke cross-head diesel engines of crosshead, and it can be propulsion system in the steamer or the prime mover in the power station.These motors have 3 to 14 cylinders that become in-line arrangement usually.Motor 1 forms on the base plate 2 that has the main bearing (only can see the flywheel 3 that is loaded on crankshaft end) that is used for bent axle.
Depend on manufacturing equipment, base plate 2 can be made into several sections single type or that be divided into appropriate size.
The A shape frame-box 4 of Welding Design is installed on the base plate 2.At exhaust side, frame-box 4 is provided with the safety valve that is used for each cylinder, and in camshaft side, frame-box 4 is provided with the big hinged door that is used for each cylinder.Crosshead guiding face (not shown) is integrated in the frame-box 4.
Piston (not shown) is contained in the inside of each cylinder liner 6.Piston rod (not shown) is connected in the bottom of piston at the top of crosshead (not shown).Cylinder liner 6 is by 5 carryings of cylinder framework.
Engine configurations has the turbosupercharger 10 that is arranged on the motor tail end.Cylinder be the way flow ejector half and have a scavenging port (not shown) that is arranged in the gas box, be fed to scavenge air receiver 9 by the scavenging of turbosupercharger 10 pressurizations by this scavenging port.
Air directly is drawn into turbosupercharger 10 from the baffler (not shown) of engine compartment by turbosupercharger.Air by turbosupercharger 10 via air-cooler 11 and scavenge air receiver 9 and direct into the scavenging port of cylinder liner 6.
Engine configurations has electronic auxiliary scavenging blower 13.Under low load and medium load situation, the work of the auxiliary turbine device compressor of auxiliary blower.
In cylinder head 14, outlet valve (not shown) medially is installed in the top of cylinder.When expansion stroke finishes, before engine piston descended through the scavenging port, outlet valve was opened, thereby, the combustion gas that are arranged in the burning cavity of piston top flow out by the discharge route 15 (Fig. 2) that feeds exhaust gas collector 16, and the pressure in the burning cavity is released.In the process that piston moves up, outlet valve is closed once more.
The inside of receiver portion 17 forms chamber far away, and the inside of receiver portion 18 forms nearly chamber.
Two receiver portions 17,18 of exhaust gas collector 16 cover by the insulating material 20 of a bed thickness.Two housings 17,18 are all supported by rigid strutting piece 22 in the neutral position of its longitudinal length.In the both sides of rigid strutting piece 22, along a plurality of flexible strutting pieces 23 of the distribution of lengths of receiver portion 17,18.Flexible strutting piece 23 is formed by a plate, this plate can along the suitable amplitude of longitudinal direction of exhaust gas collector 16 move, for the thermal expansion that compensates big receiver portion 17,18 need be moved.
In 12 cylinders of motor 1 each all is connected in the inlet 24 of exhaust gas collector 16 by exhaust steam passage 15.
By exhaust gas collector inlet 24, cylinder 1 to 6 feeds in the receiver portion 17, and cylinder 7 to 12 feeds in the receiver portion 18.
In the fuel plate 29 that is provided with along the pressure distribution pipe lengths, pressure distribution pipeline 19 is configurable the aperture, and described aperture is used to reduce pressure surge.
Similar with receiver portion 17 and 18, pressure distribution pipeline 19 has covered the insulating material 20 of a bed thickness.
The part 26 of pressure distribution pipeline 19 and 25 flow area are greater than the flow area of the part 28 of pressure distribution pipeline 19.The reason of big flow area is: the part 26 of pressure distribution pipeline 19 and 25 all is transferred to the inlet of turbosupercharger with all waste gases in the receiving exhaust gas collector 16, and the part 28 of pressure distribution pipeline 19 is only transmitted the waste gas that receives in the receiver portion 17.
The difference of the flow area by distribution duct 19 has obtained equilibrium from receiver portion 17 with from the resistance of the waste gas of receiver portion 18 processes.Thereby the thermal force on the cylinder is distributed about equally, thereby all cylinders can not have the single cylinder will overload hazard near the running of its maximum load ground.
Figure 4 and 5 show another mode of execution according to exhaust gas collector of the present invention.This mode of execution and above-mentioned mode of execution are roughly the same, and difference is: turbosupercharger 10 is not the tail end that accurately is installed in motor itself, but the afterbody of adjacent engine 1 is installed in exhaust gas collector 16 side by side.This mode of execution should be lacked in the situation of (these may be at the needs of the ship of specific type, and the engine compartment length that can provide in this ship is limited) as much as possible in the entire length of motor 1 be particularly advantageous.By with turbosupercharger 10 from the afterbody priming near the motor afterbody side by side on the motor of exhaust gas collector 16, compare with top mode of execution, the entire length of motor 1 has reduced.
The term that uses in the claim " comprises " element or the step of not getting rid of other.The term that uses in the claim " one " or " one " do not get rid of a plurality of.
Though the present invention is described in detail, be appreciated that these details only is used for purpose of description, and those skilled in the art can change therein not breaking away under the situation of category of the present invention for the purpose of explaining.
Claims (9)
1. microscler exhaust gas collector (16) that is used for large-scale two-stroke diesel engine (1),
Described exhaust gas collector (16) longitudinally is separated into a nearly chamber and a chamber far away, perhaps is separated into a nearly chamber and a chamber far away and an one or more intermediate cavity,
Described exhaust gas collector (16) is provided with the exhaust gas entrance (24) along its distribution of lengths,
Described exhaust gas collector (16) comprises a pressure distribution pipeline (19), and this pressure distribution pipeline extends from one of them vertically terminal partial-length at described exhaust gas collector of described exhaust gas collector,
Described pressure distribution pipeline (19) has the inlet opening that exit opening is used to connect turbosupercharger (10), described turbosupercharger be arranged on described one of them vertically terminal near, and
Described pressure distribution pipeline (19) is connected at least wherein two described chambeies with described outlet.
2. exhaust gas collector as claimed in claim 1, wherein, described pressure distribution pipeline extends to described chamber far away or described intermediate cavity from described outlet along described exhaust gas collector.
3. exhaust gas collector as claimed in claim 2, wherein, described pressure distribution pipeline (19) comprises a branch (27), described branch (27) is connected in described nearly chamber or described intermediate cavity, perhaps is connected in described nearly chamber and described intermediate cavity.
4. exhaust gas collector as claimed in claim 3, wherein, described intermediate cavity is arranged between described nearly chamber and the described chamber far away, and described pressure distribution pipeline (19) is provided with the other branch that at least one is connected in this intermediate cavity.
5. exhaust gas collector as claimed in claim 4, wherein, the pressure distribution pipeline has maximum flow area from the part (25,26) that outlet extends to first branch (27), and the pressure distribution pipeline becomes more and more littler until the flow area of the further part (28) of pressure distribution pipeline (19) end after each branch.
6. exhaust gas collector as claimed in claim 1, wherein, described exhaust gas collector (16) has one and is divided into the receiver portion in several chambeies or has several receiver portions (17,18), and each in described several receiver portions all includes one or more chambeies.
7. exhaust gas collector as claimed in claim 1, wherein, described pressure distribution pipeline (19) is provided with in described long exhaust gas collector (16) side by side, and support by at least one rigid strutting piece (22) and at least one flexible strutting piece (23), described flexible strutting piece is configured to allow at described pressure distribution pipeline (19) and motor length travel between the part of described pressure distribution pipeline is installed, thus the difference of the thermal expansion of compensation between described engine section and described pressure distribution pipeline.
8. exhaust gas collector as claimed in claim 7, wherein, described pressure distribution pipeline (19) is longitudinally fastening by described rigid strutting piece (22).
9. exhaust gas collector as claimed in claim 1, wherein, the housing of described exhaust gas collector (16) comprises the receiver portion (17,18) that two or more in-line arrangement are provided with.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006172112A JP4176789B2 (en) | 2006-06-22 | 2006-06-22 | Exhaust gas receiver for large two-cycle diesel engines |
| JP2006-172112 | 2006-06-22 | ||
| JP2006172112 | 2006-06-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101092899A CN101092899A (en) | 2007-12-26 |
| CN101092899B true CN101092899B (en) | 2010-09-29 |
Family
ID=38737827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100987979A Active CN101092899B (en) | 2006-06-22 | 2006-07-14 | Exhaust gas receiver for a large two-stroke diesel engine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4176789B2 (en) |
| KR (1) | KR100758800B1 (en) |
| CN (1) | CN101092899B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK177989B1 (en) * | 2014-02-27 | 2015-02-16 | Man Diesel & Turbo Deutschland | A large two-stroke internal combustion engine and an exhaust gas receiver for a large two-stroke internal combustion engine |
| DK178078B8 (en) * | 2014-05-22 | 2015-05-18 | Man Diesel & Turbo Deutschland | A large slow running turbocharged two-stroke internal combustion engine with an exhaust gas receiver and a scavenge air receiver |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2061210U (en) * | 1989-05-09 | 1990-08-29 | 欧阿林 | Cleaning device for automobile exhaust |
| US5866860A (en) * | 1996-12-06 | 1999-02-02 | Chen; Ching Long | Muffler having a pressure adjusting device |
| CN2586819Y (en) * | 2002-10-26 | 2003-11-19 | 阮瑞平 | Black smoke particles filter for diesel engine |
| CN2617940Y (en) * | 2003-05-28 | 2004-05-26 | 孙常海 | Exhaust filter of vehicle |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4165730B2 (en) * | 2000-10-05 | 2008-10-15 | 株式会社小松製作所 | Multi-cylinder engine intake structure |
| DE102005016821B4 (en) * | 2005-04-12 | 2007-02-22 | Man B & W Diesel A/S | United motor |
| DE102005016820B4 (en) * | 2005-04-12 | 2007-02-15 | Man B & W Diesel A/S | United motor |
-
2006
- 2006-06-22 JP JP2006172112A patent/JP4176789B2/en active Active
- 2006-07-13 KR KR1020060065738A patent/KR100758800B1/en active IP Right Grant
- 2006-07-14 CN CN2006100987979A patent/CN101092899B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2061210U (en) * | 1989-05-09 | 1990-08-29 | 欧阿林 | Cleaning device for automobile exhaust |
| US5866860A (en) * | 1996-12-06 | 1999-02-02 | Chen; Ching Long | Muffler having a pressure adjusting device |
| CN2586819Y (en) * | 2002-10-26 | 2003-11-19 | 阮瑞平 | Black smoke particles filter for diesel engine |
| CN2617940Y (en) * | 2003-05-28 | 2004-05-26 | 孙常海 | Exhaust filter of vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2008002342A (en) | 2008-01-10 |
| KR100758800B1 (en) | 2007-09-14 |
| JP4176789B2 (en) | 2008-11-05 |
| CN101092899A (en) | 2007-12-26 |
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Owner name: MAN DIESEL AND TURBINE COMPANY, MAN DIESEL ENGINES Free format text: FORMER NAME: MANDIESEL CORPORATION DK, MAN DIESEL ENGINES EUROPE AG ASSOCIATES Owner name: MANDIESEL CORPORATION DK Free format text: FORMER NAME: MAN B + W DIESEL AS. Owner name: MANDIESEL CORPORATION DK, MAN DIESEL ENGINES EUROP Free format text: FORMER NAME: MANDIESEL CORPORATION DK |
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Address after: Copenhagen, Denmark Patentee after: Mann Diesel & Turbine, an associate company of Mann Diesel & Turbine Europe AG Address before: Copenhagen, Denmark Patentee before: MAN DIESEL & TURBO DEUTSCHLAND Address after: Copenhagen, Denmark Patentee after: MAN DIESEL & TURBO DEUTSCHLAND Address before: Copenhagen, Denmark Patentee before: MAN DIESEL A/S Address after: Copenhagen, Denmark Patentee after: MAN DIESEL A/S Address before: Copenhagen, Denmark Patentee before: MAN B & W DIESEL A/S |
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Address after: Copenhagen, Denmark Patentee after: Mannone solutions (mannone solutions Germany) branch Address before: Copenhagen, Denmark Patentee before: Mann Diesel & Turbine, an associate company of Mann Diesel & Turbine Europe AG |