KR20130053756A - Exhaust gas pipe structure of engine - Google Patents

Exhaust gas pipe structure of engine Download PDF

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Publication number
KR20130053756A
KR20130053756A KR1020110119377A KR20110119377A KR20130053756A KR 20130053756 A KR20130053756 A KR 20130053756A KR 1020110119377 A KR1020110119377 A KR 1020110119377A KR 20110119377 A KR20110119377 A KR 20110119377A KR 20130053756 A KR20130053756 A KR 20130053756A
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KR
South Korea
Prior art keywords
pipe
exhaust pipe
cooling
engine
exhaust
Prior art date
Application number
KR1020110119377A
Other languages
Korean (ko)
Inventor
장기훈
안일수
최재철
Original Assignee
현대중공업 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR1020110119377A priority Critical patent/KR20130053756A/en
Publication of KR20130053756A publication Critical patent/KR20130053756A/en

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Classifications

    • 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
    • F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • 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
    • F01N3/05—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of air, e.g. by mixing exhaust with air
    • 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
    • F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting from exhaust energy
    • F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting from exhaust energy the devices using heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P1/00—Air cooling
    • F01P1/06—Arrangements for cooling other engine or machine parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/12—Arrangements for cooling other engine or machine parts
    • 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
    • F01N2260/02—Exhaust treating devices having provisions not otherwise provided for for cooling the device
    • F01N2260/022—Exhaust treating devices having provisions not otherwise provided for for cooling the device using air

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Toxicology (AREA)
  • Exhaust Silencers (AREA)

Abstract

The present invention relates to an exhaust pipe structure of an engine, including a main pipe (10) for discharging exhaust gas generated from the engine and a plurality of cylinder connecting pipes (30) connecting the main pipe (10) and a plurality of cylinders. A cooling means for cooling the exhaust pipe being heated by the high temperature exhaust gas is provided on the exhaust pipe including the main pipe 10 and the plurality of cylinder connecting pipes 30.
Therefore, cover the cooling pipe that is sealed to the outside in a state spaced radially apart from the outer peripheral surface of the main pipe and the entire cylinder connecting pipe of the exhaust pipe and air is introduced into the space between the cooling pipe and the exhaust pipe, the main pipe and the entire exhaust pipe By allowing the cylinder pipes to be cooled, the insulation for the heat removal of the existing exhaust pipe is deleted, thereby reducing the burden of installing the existing insulation and replacing the insulation, as well as the maintenance of the exhaust pipe. In addition, the high temperature air obtained by heat exchange through the process of cooling the exhaust pipe can be utilized as a heat source for other devices, or even for indoor heating, resulting in diversification of energy efficiency. Get the effect.

Description

Exhaust gas pipe structure of engine

The present invention relates to the structure of the exhaust pipe of the engine, and more particularly to the outer circumferential surface of the main pipe and the entire cylinder connecting pipe of the exhaust pipe and covering the cooling pipe which is sealed to the outside in a predetermined distance radially spaced between the cooling pipe and the exhaust pipe By injecting air into the space to cool the main pipe and the entire cylinder connecting pipe of the exhaust pipe, the existing insulation for heat removal of the existing exhaust pipe is eliminated, thereby reducing the cost burden of installing the existing insulation and replacing the insulation. In addition, the exhaust pipe can be easily maintained, and furthermore, the hot air obtained through heat exchange through the process of cooling the exhaust pipe can be used as a heat source for other devices or for indoor heating. As a result, it is possible to seek diversification of energy efficiency. It relates to the exhaust pipe structure of the engine.

In general, there are a variety of engines such as propulsion (two stroke / low speed) engines, power generation (four stroke / medium speed) engines, and emergency (four stroke) engines.

In addition, these engines are individually installed to propel a ship or supply energy for constant electricity supply and emergency power supply.

On the other hand, the engine is provided with a separate exhaust pipe for discharging the exhaust gas generated during the operation to the outside of the engine.

As an example, the exhaust pipe structure of the engine of the prior art will be described as follows.

As shown in Figs. 1 and 2, the exhaust pipe structure of the engine of the prior art has a straight pipe-shaped main pipe 5 through which the center passes through the exhaust gas, and the main pipe 5 and a plurality of cylinders (not shown). ) And a plurality of cylinder connecting pipes 8 for guiding the exhaust gas generated in each cylinder to the main pipe 5.

The main pipe (5) is a straight pipe (5a) of a certain length is extended, so that the bellows (wrinkle pipe) 5b is connected and the straight pipe (5a) is a structure in which the extension is repeated so-called straight pipe (5a) / bellows (5b) continuous repetition It is a tubular structure.

Here, the bellows (5b) is a function that is stretched in the longitudinal direction so that the main tube (5) itself in the longitudinal direction by the high-temperature exhaust gas can appropriately respond to thermal deformation.

The cylinder connecting tube 8 has an elbow tube shape having a bent structure in which one end thereof is connected to the cylinder and the other end thereof is connected to the main tube 5.

In addition, the exhaust pipe outer circumferential surface consisting of the main pipe 5 and the cylinder connecting pipe 8 of the prior art is provided with a heat insulating material 9 for blocking heat generation of the exhaust pipe to the outside by high temperature exhaust gas.

The exhaust pipe structure of the engine of the prior art by such a structure is the exhaust gas generated in each cylinder of the engine is guided to the main pipe (5) through each cylinder connecting pipe (8) to the outside through the main pipe (5) It is discharged.

However, since the exhaust pipe structure of the prior art is to insulate the high-temperature exhaust pipe only through the heat insulator in a state in which a cooling means for cooling the exhaust pipe is not provided by itself, the maintenance of the maintenance by installing the heat insulator and replacing the heat insulator is basically performed. Difficulty as well as cost burden problems.

The present invention has been made to solve such a problem, the space between the cooling pipe and the exhaust pipe covering the cooling pipe that is sealed to the outside in the radially spaced apart state and the outer peripheral surface of the main pipe and the entire cylinder connecting pipe of the exhaust pipe By injecting air to cool the main pipe and the entire cylinder connecting pipe of the exhaust pipe, the existing insulation for heat removal of the existing exhaust pipe is deleted, thus reducing the burden of the cost of installing the existing insulation and replacing the insulation. Of course, the maintenance of the exhaust pipe is easy, and furthermore, the high temperature air obtained by heat exchange through the process of cooling the exhaust pipe can be utilized as a heat source for other devices or for indoor heating. To diversify energy efficiency The purpose is to provide an engine exhaust pipe structure.

The exhaust pipe structure of the engine of the present invention for achieving the above object is an exhaust pipe of the engine including a main pipe for discharging the exhaust gas generated from the engine and a plurality of cylinder connecting pipes connecting the main pipe and the plurality of cylinders In the structure, it characterized in that the cooling means for cooling the heating of the exhaust pipe by the hot exhaust gas on the exhaust pipe consisting of the main pipe and the plurality of cylinder connecting pipes.

In addition, in the exhaust pipe structure of the engine according to an embodiment of the present invention, the cooling means may supply a cooling fluid to the outer peripheral surface of the exhaust pipe to allow the exhaust pipe to be cooled.

In addition, in the exhaust pipe structure of the engine according to an embodiment of the present invention, the cooling means is covered with the outer circumferential surface of the exhaust pipe including the entire main pipe and the plurality of cylinder connecting pipes in a radially spaced apart state. A cooling tube may be provided, and the exhaust pipe may be cooled by injecting a cooling fluid into a space between the cooling tube and the exhaust pipe.

In addition, in the exhaust pipe structure of the engine according to an embodiment of the present invention, the cooling pipe is a circular pipe shape concentric with the exhaust pipe, the space between the exhaust pipe and the outer circumferential surface may be a structure that is equally spaced over the entire outer peripheral surface. have.

In addition, in the exhaust pipe structure of the engine according to an embodiment of the present invention, a fluid for discharging the cooling fluid guided to the rear end of the cooling pipe after cooling the main pipe and the cylinder connecting pipe to the rear end of the cooling tube. An outlet can be provided.

In addition, in the exhaust pipe structure of the engine according to an embodiment of the present invention, the cooling fluid may be air.

As described above, the exhaust pipe structure of the engine according to an embodiment of the present invention covers the cooling pipe that is sealed to the outside in a state spaced apart at regular intervals from the outer peripheral surface of the main pipe and the entire cylinder connecting pipe of the exhaust pipe and the cooling pipe By injecting air into the space between the exhaust pipe and the exhaust pipe to cool the main pipe and the entire cylinder connection pipe of the exhaust pipe, the existing insulation for heat exhaustion of the existing exhaust pipe is deleted, and thus the cost of installing the existing insulation and replacing the insulation It is possible not only to reduce the back, but also to maintain the exhaust pipe easily, and furthermore, to utilize the high temperature air obtained by heat exchange through the process of cooling the exhaust pipe as a heat source for other devices or for indoor heating. As a result, we can seek diversification of energy efficiency. To obtain the effect such that it.

1 is a schematic front view showing the exhaust pipe structure of the engine according to the prior art.
Figure 2 is a schematic cross-sectional view showing the exhaust pipe structure of the engine according to the prior art.
Figure 3 is a schematic diagram showing the exhaust pipe structure of the engine according to an embodiment of the present invention.
Figure 4 is a schematic cross-sectional view showing the main portion of the exhaust pipe structure of the engine according to an embodiment of the present invention.
5 is a schematic longitudinal cross-sectional view showing the main portion of the exhaust pipe structure of the engine according to an embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

As shown in Figures 3 to 5, the exhaust pipe structure of the engine according to an embodiment of the present invention is the main pipe 10 for discharging the exhaust gas generated from the engine and the main pipe 10 and a plurality of cylinders ( And a plurality of cylinder connecting pipes 30 connecting the main pipes 10 and the plurality of cylinder connecting pipes 30 to heat the exhaust pipe by hot exhaust gas. It has a structure provided with cooling means for cooling.

Here, the main pipe 10 is a so-called plurality of straight pipes 11 is a structure in which a certain length of the straight pipe 11 is extended and bellows (wrinkle pipe) 12 is connected and the straight pipe 11 is extended again as in the prior art. ) And bellows 12 have a continuous repeating tubular structure.

In addition, the bellows 12 performs a function of stretching in the longitudinal direction so that the main pipe 10 itself may be expanded in the longitudinal direction by a high temperature exhaust gas so as to adequately cope with thermal deformation.

The cooling means is to supply a cooling fluid to the outer circumferential surface of the exhaust pipe so that the exhaust pipe is cooled, the cooling means, the outer peripheral surface and the outer peripheral surface of the exhaust pipe including the entire main pipe 10 and the plurality of cylinder connecting pipe (30) The cooling pipe 40 is provided to be covered in a state spaced apart by a predetermined interval, and the structure is configured to cool the exhaust pipe by injecting a cooling fluid into the space between the cooling pipe 40 and the exhaust pipe.

The cooling pipe 40 has a circular tube shape concentric with the exhaust pipe, and has a structure in which a space (ie, radial spacing) with the exhaust pipe is equally spaced over the entire circumferential outer circumferential surface.

In addition, the rear end of the cooling tube 40 cools the main tube 10 and the cylinder connecting tube 30, and then discharges the fluid discharge port 41 for discharging the cooling fluid guided to the rear end of the cooling tube 40 to the outside. ) Is provided.

Here, the cooling fluid may use air.

In addition, it will be apparent that the air supplied as the cooling fluid may be selectively supplied through various devices and paths without being specific.

Exhaust pipe structure of the engine according to an embodiment of the present invention according to such a configuration is through the main pipe 10 after the exhaust gas generated from the cylinder of the engine is sent to the main pipe (10) through each cylinder connecting pipe (30) It is discharged to the outside.

At this time, the air is supplied through the respective cooling pipes 40 while the exhaust gas is discharged, thereby cooling the exhaust pipe.

Then, the air after cooling the exhaust pipe is discharged to the outside through the fluid discharge port 41 of the rear end of the cooling tube (40).

Thus, the air discharged to the outside of the cooling tube 40 may be supplied to various places as needed because the high temperature air heated through heat exchange with the exhaust pipe.

As described above, the exhaust pipe structure of the engine according to an embodiment of the present invention covers the cooling pipe that is sealed to the outside in a state spaced apart at regular intervals radially with the outer peripheral surface of the main pipe and the entire cylinder connecting pipe of the exhaust pipe and the cooling pipe and the exhaust pipe By injecting air into the space between them to cool the main pipe and the entire cylinder connecting pipe of the exhaust pipe, the existing insulation for the heat removal of the existing exhaust pipe is deleted, and accordingly, the burden of the cost of installing the existing insulation and replacing the insulation Not only can it be reduced, but also the maintenance of the exhaust pipe becomes easy, and furthermore, the hot air obtained by heat exchange through the process of cooling the exhaust pipe can be used as a heat source for other devices or for indoor heating. As a result, it is possible to seek diversification of energy efficiency. Will.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, It should be understood that all of the techniques that can be easily changed and used by those skilled in the art are included in the technical scope of the present invention.

DESCRIPTION OF REFERENCE NUMERALS
5: Main tube 5a: Intuition
5b: Bellows 8: Cylinder connector
9: heat insulating material 10: main pipe
11: intuition 12: bellows
30: cylinder connector 40: cooling tube
41: fluid outlet

Claims (6)

In the exhaust pipe structure of the engine comprising a main pipe for discharging the exhaust gas generated from the engine and a plurality of cylinder connecting pipes connecting the main pipe and the plurality of cylinders,
An exhaust pipe structure of the engine, characterized in that the cooling means for cooling the exhaust pipe is heated by the high-temperature exhaust gas on the exhaust pipe consisting of the main pipe and the plurality of cylinder connecting pipes. The method of claim 1,
Wherein the cooling means comprises:
The exhaust pipe structure of the engine, characterized in that the exhaust pipe is cooled by supplying a cooling fluid to the outer peripheral surface of the exhaust pipe. The method of claim 2,
Wherein the cooling means comprises:
A cooling pipe is provided to be covered with the outer circumferential surface of the exhaust pipe including the entire main pipe and the plurality of cylinder connecting pipes spaced at a predetermined interval radially, and the cooling pipe is introduced into the space between the cooling pipe and the exhaust pipe. An exhaust pipe structure of the engine, characterized by being cooled. The method of claim 3,
The cooling pipe is an exhaust pipe structure of the engine, characterized in that the concentric circle with the exhaust pipe, the space between the exhaust pipe and the structure is formed at equal intervals over the entire outer peripheral surface. 5. The method of claim 4,
And a fluid discharge port for discharging the cooling fluid guided to the rear end of the cooling tube to the outside after cooling the main tube and the cylinder connecting tube to the rear end of the cooling tube. The method of claim 2,
The exhaust pipe structure of the engine, characterized in that the cooling fluid is air.
KR1020110119377A 2011-11-16 2011-11-16 Exhaust gas pipe structure of engine KR20130053756A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110119377A KR20130053756A (en) 2011-11-16 2011-11-16 Exhaust gas pipe structure of engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110119377A KR20130053756A (en) 2011-11-16 2011-11-16 Exhaust gas pipe structure of engine

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KR20130053756A true KR20130053756A (en) 2013-05-24

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KR1020110119377A KR20130053756A (en) 2011-11-16 2011-11-16 Exhaust gas pipe structure of engine

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160017715A (en) * 2014-08-01 2016-02-17 현대중공업 주식회사 Triple wall structure exhaust line of engine
CN105545441A (en) * 2016-01-27 2016-05-04 徐磊 Exhaust manifold with compensation function
CN112012816A (en) * 2020-08-17 2020-12-01 杨东梅 Vehicle energy saving and emission reduction system
KR20220002763U (en) * 2021-05-14 2022-11-22 지송근 Fuel Supply Apparatus Having Temperature Maintenance Structure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160017715A (en) * 2014-08-01 2016-02-17 현대중공업 주식회사 Triple wall structure exhaust line of engine
CN105545441A (en) * 2016-01-27 2016-05-04 徐磊 Exhaust manifold with compensation function
CN112012816A (en) * 2020-08-17 2020-12-01 杨东梅 Vehicle energy saving and emission reduction system
KR20220002763U (en) * 2021-05-14 2022-11-22 지송근 Fuel Supply Apparatus Having Temperature Maintenance Structure

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