KR102099757B1 - Marine diesel engine exhaust gas purification device - Google Patents

Abstract

According to an embodiment of the present invention, an exhaust gas purification device of a diesel engine for a ship comprises: a main body unit having an inlet on one side thereof, an outlet on the other side thereof, and an accommodation space formed therein; a catalyst filter module which is arranged in the accommodation space, and filters exhaust gas of a diesel engine for a ship flowing into the inlet to be discharged through the outlet; a first leg support unit which is coupled to a lower portion of the main body unit on the inlet side, and supports the main body unit; and a second leg support unit which is coupled to an upper portion of the main body unit on the outlet side, and supports the main body unit. During thermal expansion of the main body unit, the first leg support unit and the second leg support unit are slid from a bottom structure. The sliding movement distance of the second leg support unit in the longitudinal direction of the main body unit is longer than the sliding movement distance of the first leg support unit.

Description

Marine diesel engine exhaust gas purification system {MARINE DIESEL ENGINE EXHAUST GAS PURIFICATION DEVICE}

The present invention relates to an exhaust gas purification device for a marine diesel engine, and more particularly, to an exhaust gas purification device for a marine diesel engine equipped with a leg support configured to allow sliding movement.

Nitrogen oxides and sulfur oxides contained in exhaust gas emitted from ships are representative air pollutants that are regulated by the International Maritime Organization (IMO).

Accordingly, an exhaust gas purification apparatus capable of purifying particulate matter (PM), sulfur oxides (SOx), and nitrogen oxides (NOx) among exhaust gas generated during operation and combustion of a marine diesel engine must be provided on a ship.

1 is a perspective view showing an exhaust gas purification device of a conventional marine diesel engine.

1 is a Korean Registered Patent No. 10-1780920 (prior document 1) filed by the applicant.

Referring to FIG. 1, exhaust gas discharged from a diesel engine of a ship flows into the body 20 through an inlet 21 provided at one side of the body 20.

Here, a catalytic filter module (not shown) is provided inside the main body 20, and harmful substances such as nitrogen oxides and sulfur oxides among the exhaust gas flowing into the main body 20 are filtered by the catalytic filter module. Can be.

And the exhaust gas purified through the catalytic filter module is discharged to the outside of the body portion 20 through the outlet provided on the other side of the body portion 20.

In this way, the exhaust gas discharged from the diesel engine of the ship can be purified by the exhaust gas purification apparatus 10 of the marine diesel engine.

2 is an exemplary view schematically showing a state in which the leg support of the exhaust gas purification apparatus of the conventional marine diesel engine is coupled to the floor structure.

Referring to FIG. 2, a base member 31 is provided under the leg support 30. The base member 31 is formed with a fastening hole 32 through which the fixing member 41 is inserted, so that the main body portion 20 can be firmly coupled to the floor structure 1 by the fastening portion 40.

The fastening part 40 is provided as a fixing member 41 that is inserted through the fastening hole 32 and a head member 42 provided at an upper end of the fastening member 41 and closely pressing the upper surface of the base member 31. Is done. The fastening portion 40 may be a bolt.

At this time, the diameter of the fixing member 41 inserted into the fastening hole 32 is made to be the same as the diameter of the fastening hole 32. Accordingly, when the fixing member 41 and the floor structure 1 are combined, the exhaust gas purification device 10 of the marine diesel engine can be integrally coupled to the floor structure 1.

Usually, exhaust gas in a high temperature / high pressure state of 500 ° C or higher flows into the interior of the exhaust gas purification device 10 for a marine diesel engine. When such high temperature / high pressure exhaust gas flows into the main body 20, the main body 20 is thermally expanded by the exhaust gas.

However, in the conventional marine diesel engine exhaust gas purification apparatus 10, the leg support 30 is integrally fixed to the floor structure 1, and thus, when the body 20 is thermally expanded, the leg support 30 is a body ( 20) does not withstand the thermal expansion, there is a problem of bending.

In addition, since the leg support portion 30 for supporting the body portion 20 is integrally fixed to the floor structure 1, the thermal expansion of the body portion 20 is not effectively performed, and, of course, cracks may occur in the body portion 20 when severe. This may also occur.

Accordingly, various studies are required for the exhaust gas purification device for a marine diesel engine, which is configured to prevent the leg support portion 30 from bending when thermal expansion of the main body portion 20 and prevent cracking of the main body portion 20 at the same time. .

Prior Literature 1: Korean Registered Patent No. 10-1780920 (2017.09.15)

The technical problem of the present invention for solving the above problems is to provide an exhaust gas purifying apparatus for a marine diesel engine equipped with a leg support configured to allow sliding movement.

In order to achieve the above technical problem, an embodiment of the present invention is provided with an inlet port on one side, an outlet port on the other side, and a body part having an accommodation space formed therein; A catalytic filter module provided in the accommodation space and filtering exhaust gas of a marine diesel engine flowing into the inlet and discharged to the outlet; A first leg support portion coupled to a lower portion of the main body portion on the inlet side and supporting the main body portion; And it is coupled to the lower portion of the main body portion of the outlet side, and includes a second leg support portion for supporting the body portion, when the body portion thermal expansion, the first leg support portion and the second leg support portion is made to be sliding from the floor structure, , The sliding movement distance of the second leg support portion with respect to the longitudinal direction of the main body portion is provided to exhaust gas purification device for a marine diesel engine that is made to be longer than the sliding movement distance of the first leg support portion.

In one embodiment of the present invention, the first leg support portion, a first support member coupled to the lower portion of the body portion; And a first base member coupled to a lower portion of the first support member and having a first fastening hole in a hole hole, wherein the second leg support portion includes a second support member coupled to a lower portion of the body portion; And a second base member coupled to a lower portion of the second support member and having a second fastening hole of a long hole, wherein the length of the second fastening hole is longer than the first fastening hole in the longitudinal direction of the body portion. It is formed, the length of the first fastening hole and the second fastening hole with respect to the width direction of the body portion may correspond.

In one embodiment of the present invention, when the body portion is thermally expanded, the first leg support portion and the second leg support portion may be slidable with respect to the width direction of the body portion.

In one embodiment of the present invention, a first seating groove connected to the first fastening hole is formed on an upper surface of the first base member, and the first seating groove slides the body part together with the first fastening hole. It is made to limit the range of movement, and a second seating groove connected to the second fastening hole is formed on an upper surface of the second base member, and the second seating groove slides along with the second fastening hole. It can be made to limit the scope.

In one embodiment of the present invention, the length of the second fastening hole with respect to the longitudinal direction of the body portion may be made to have a length of 1.5 to 2.5 times the length of the first fastening hole.

In one embodiment of the present invention, the side of the main body portion is coupled, further comprising a side leg support for supporting the body portion, the side leg support portion, a plurality of side surfaces coupled to the side of the body portion at a predetermined interval Support member; And connecting the side support member, it may be made to have a connecting member having a side fastening hole made of a long hole and a side seating groove connected to the side fastening hole.

In one embodiment of the present invention, when the body portion thermally expands, the side fastening hole may be formed to be elongated in the longitudinal direction of the body portion so that the side leg support portion slides from the side fixing surface.

When explaining the effect of the exhaust gas purification apparatus for a marine diesel engine according to the present invention described above are as follows.

According to the present invention, the exhaust gas purification device for a marine diesel engine is made to slide the leg support portion when the body portion thermally expands. Therefore, it is possible to prevent the leg support portion from being bent or cracks from being generated in the body portion due to thermal expansion of the body portion.

It should be understood that the effects of the present invention are not limited to the above-described effects, and include all effects that can be deduced from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a perspective view showing an exhaust gas purification device of a conventional marine diesel engine.
2 is an exemplary view schematically showing a state in which the leg support of the exhaust gas purification apparatus of the conventional marine diesel engine is coupled to the floor structure.
3 is a perspective view of an exhaust gas purification apparatus for a marine diesel engine according to an embodiment of the present invention.
4 is a schematic illustration of an exhaust gas purification apparatus for a marine diesel engine according to an embodiment of the present invention.
5 is a perspective view showing a first leg support and a second leg support according to an embodiment of the present invention.
6 is an exemplary cross-sectional view of a first leg support portion and a second leg support portion viewed from a plane according to an embodiment of the present invention.
7 is an exemplary view schematically showing a state in which a first leg support portion and a second leg support portion are coupled to a floor structure according to an embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be implemented in various different forms, and thus is not limited to the embodiments described herein. In addition, in order to clearly describe the present invention in the drawings, parts irrelevant to the description are omitted, and like reference numerals are assigned to similar parts throughout the specification.

Throughout the specification, when a part is "connected" to another part, this includes not only "directly connected" but also "indirectly connected" with another member in between. . Also, when a part “includes” a certain component, this means that other components may be further provided instead of excluding other components, unless otherwise stated.

In the present invention, the upper part and the lower part mean that they are located above or below the target member, and do not necessarily mean that they are located above or below the gravitational direction.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a perspective view of an exhaust gas purification device for a marine diesel engine according to an embodiment of the present invention, and FIG. 4 is a schematic illustration of an exhaust gas purification device for a marine diesel engine according to an embodiment of the present invention, 5 is a perspective view showing the first leg support and the second leg support according to an embodiment of the present invention, Figure 6 is a cross-sectional view of the first leg support and the second leg support according to an embodiment of the present invention in a plan view 7 is an exemplary view schematically showing a state in which the first leg support portion and the second leg support portion are coupled to the floor structure according to an embodiment of the present invention.

3 to 7, the exhaust gas purification apparatus 1000 for a marine diesel engine includes a main body part 100, a catalyst filter module 200, a first leg support part 300, and a second leg support part 400. And it may include a side leg support 500.

The main body portion 100 forms the outer shape of the exhaust gas purification apparatus 1000 for a marine diesel engine.

The receiving space portion 101 is formed inside the body portion 100.

In addition, one side of the main body 100 is provided with an inlet port 110 communicating with the receiving space part 101.

The inlet 110 is connected to an exhaust pipe (not shown) that discharges exhaust gas from a marine diesel engine. Accordingly, the exhaust gas discharged from the marine diesel engine is guided to the accommodation space 101 through the inlet 110.

Here, a plurality of catalyst filter modules 200 are provided in the accommodation space 101. The catalytic filter module 200 filters contaminants from exhaust gas emitted from a marine diesel engine. The catalytic filter module 200 may be disposed at predetermined intervals in the longitudinal direction of the main body 100.

In the present invention, the form in which three catalyst filter modules 200 are provided along the longitudinal direction of the main body 100 is described as an example, but the catalyst filter module 200 is not necessarily limited to three, but two, Of course, it can be composed of various numbers such as 4 and 5.

The catalytic filter module 200 has a plurality of catalytic filter parts stacked. Here, the catalytic filter unit is configured to filter air pollutants such as particulate matter (PM), sulfur oxides (SOx), and nitrogen oxides (NOx) from exhaust gas generated during operation and combustion of a marine diesel engine, for example.

The catalytic filter unit may be made of a ceramic catalytic filter. Here, the catalytic filter unit is not necessarily limited to a ceramic catalytic filter, and any catalytic filter can be used as long as it is excellent in filtering air pollutants from exhaust gas discharged from a marine diesel engine.

And the plurality of catalytic filter modules 200 spaced apart along the longitudinal direction of the main body 100 may be composed of the same catalytic filter module 200, and each of the different catalytic filter modules provided with different catalytic filter parts ( Of course, it may be composed of 200).

For example, the catalytic filter module 200 disposed close to the inlet 110 and the catalytic filter module 200 disposed away from the inlet 110 may have different pore sizes of the catalyst filter unit. That is, the catalytic filter unit provided in the catalytic filter module 200 disposed close to the inlet 110 is more porous than the catalytic filter unit provided in the catalytic filter module 200 disposed close to the outlet 120 It may be formed large.

In this case, after the exhaust gas generated from the marine diesel engine flows into the inlet 110, the catalytic filter module 200 filters the pollutants step by step according to the size of the contaminants. It can be done. For example, when three catalytic filter modules 200 are provided inside the accommodating space part 101, the catalytic filter modules 200 are provided in steps of 1, 2 and 3 according to the size of the pollutant in the exhaust gas. Filtering may also be performed.

The catalytic filter module 200 disposed close to the inlet 110 and the catalytic filter module 200 disposed away from the inlet 110 may be different catalytic filter parts provided in the catalytic filter module 200. have. In this way, the catalytic filter module 200 provided inside the accommodating space portion 101 may be variously configured.

The exhaust gas purified through the catalytic filter module 200 may be discharged to the outside of the main body 100 through the outlet 120 provided on the other side of the main body 100.

Meanwhile, the first leg support part 300 and the second leg support part 400 are coupled to the lower portion of the body part 100 to support the body part 100.

Here, the first leg support part 300 is formed in a pair, and is configured to be disposed on the inlet port 110 side of the main body part 100. And the second leg support 400 is formed in a pair, it is made to be disposed on the outlet 120 side of the body portion 100. Accordingly, the main body 100 may be stably supported by the first leg support 300 and the second leg support 400.

The first leg support part 300 will be described in detail with reference to FIGS. 5A and 6A and 7A. Here, FIG. 7 (a) is a Ⅰ-Ⅰ cross-sectional view in FIG. 6.

The first leg support 300 may include a first support member 310 and a first base member 320.

Here, the upper end of the first support member 310 is coupled to the lower portion of the main body 100, and the lower end of the first support member 310 is coupled to the upper surface of the first base member 320.

The first support member 310 may be formed of an H beam. Here, the shape of the first support member 310 is not necessarily limited to the H beam shape, and of course, it may be formed in various shapes.

In addition, a first fastening hole 321 through which the fastening member 910 of the fastening part 900 is inserted is formed in the first base member 320. Here, the fixing member 910 is inserted through the first fastening hole 321 and then fixedly installed in the floor structure 1 to fix the first base member 320 to the floor structure 1. At this time, the first base member 320 is not completely fixed to the floor structure 1 by the fastening part 900.

Specifically, in a state where the fixing member 910 is fixedly installed on the floor structure 1, the first leg support part 300 is made to be able to slide within a predetermined movement range based on the fastening part 900.

At this time, the sliding movement range of the first leg support 300 may be adjusted according to the outer diameter size of the first fastening hole 321 and the fixing member 910.

Here, the first fastening hole 321 is made of a hole, but is formed larger than the outer diameter of the fixing member 910 inserted into the first fastening hole 321. Therefore, the first leg support part 300 may be slidably moved in the longitudinal direction and the width direction of the body part 100 based on the fastening part 900 fixedly installed on the floor structure 1.

At this time, the first fastening hole 321 is preferably made to be formed to be slightly larger than the outer diameter of the fixing member 910. This is for the first leg support portion 300 to be a fixed point during thermal expansion of the body portion 100.

As described above, although the first leg support part 300 is slidably moved, the sliding range is very limited.

The second leg support 400 will be described in detail with reference to FIGS. 5B and 6B and 7B. Here, FIG. 7 (b) is a cross-sectional view taken along line II-II in FIG. 6.

The second leg support 400 may include a second support member 410 and a second base member 420.

Here, the upper end of the second support member 410 is coupled to the lower portion of the body portion 100, and the lower end of the second support member 410 is coupled to the upper surface of the second base member 420.

The second support member 410 may be made the same as the first support member 310.

In addition, a second fastening hole 421 through which the fastening member 910 of the fastening part 900 is inserted is formed in the second base member 420. Here, after the fixing member 910 is inserted through the second fastening hole 421, it is fixedly installed in the floor structure 1 to fix the second base member 420 to the floor structure 1. At this time, the second base member 420 is not configured to be completely closely fixed to the floor structure 1 by the fastening part 900 like the first base member 320. That is, the second base member 420 is made to be able to slide within a predetermined movement range based on the fastening part 900.

Here, the second fastening hole 421 may be formed of a long hole. At this time, the second fastening hole 421 forms a long hole formed in the length of the main body 100 in the length direction.

The second fastening hole 421 is formed to have a longer length than the first fastening hole 321 with respect to the longitudinal direction of the body portion 100. Here, the length of the second fastening hole 421 with respect to the longitudinal direction of the main body 100 is preferably made to have a length of 1.5 to 2.5 times the length of the first fastening hole 321.

Because, when the length of the second fastening hole 421 is less than 1.5 times the length of the first fastening hole 321 with respect to the longitudinal direction of the main body 100, the sliding distance of the second leg support 400 is insignificant. Thermal expansion of the body portion 100 may not be effectively achieved.

And when the length of the second fastening hole 421 with respect to the longitudinal direction of the body part 100 exceeds 2.5 times the length of the first fastening hole 321, shape deformation of the body part 100 due to thermal expansion is large Because it can happen.

Therefore, the second fastening hole 421 is preferably made to have a length of 1.5 to 2.5 times the length of the first fastening hole 321 with respect to the longitudinal direction of the body portion 100. Here, the length ratio of the second fastening hole 421 and the first fastening hole 321 with respect to the longitudinal direction of the main body 100 is not necessarily limited to the above-mentioned length ratio.

The second fastening hole 421 has the same diameter as the first fastening hole 321, but is formed to have a long length only in the longitudinal direction of the body part 100. 2, the leg support 400 may be slidably moved in the width direction of the main body 100 like the first leg support 300, but the sliding movement range is very limited.

Here, the first leg support part 300 and the second leg support part 400 have a very limited sliding movement range with respect to the width direction of the body part 100, but when the body part 100 thermally expands, the body part 100 Also in the width direction of the first leg support 300 and the second leg support 400 may be a sliding movement.

And the second leg support 400, when the thermal expansion of the body portion 100, the sliding movement is made with respect to the longitudinal direction of the body portion 100.

As such, the second leg support 400 is formed to have a wide sliding movement range with respect to the longitudinal direction of the main body 100, which is a movement direction of exhaust gas flowing into the inlet 110 and then discharged to the outlet 120. This is preferred. Because, in the process of exhaust gas flowing into the inlet 110 and then discharged to the outlet 120, the body portion 100 may have more thermal expansion with respect to the longitudinal direction of the body portion 100, which is the movement direction of the exhaust gas. Because there is.

Thus, the second fastening hole 421 forms an elongated hole, but when the body part 100 is thermally expanded, the second leg support part 400 is a body part as the length of the body part 100 is long. Effective sliding movement may be achieved with respect to the thermal expansion of (100).

Here, when the body portion 100 is thermally expanded, the first leg support portion 300 is a fixed point, and the second leg support portion 400 is an extended point. That is, when the body portion 100 is thermally expanded, the first leg support portion 300 and the second leg support portion 400 are made to slide from the floor structure 1, but are second to the longitudinal direction of the body portion 100. The sliding movement distance of the leg support 400 is made longer than the sliding movement distance of the first leg support 300, so that thermal expansion of the main body 100 is effectively achieved.

Accordingly, bending of the first leg support 300 and the second leg support 400 due to thermal expansion of the body 100 or cracks in the body 100 may be prevented.

Here, although the first fastening hole 321 may be formed in the form of a long hole like the second fastening hole 421, in this case, the exhaust gas purification apparatus 1000 of the marine diesel engine is stably in the floor structure 1 There is an unsupported problem. For example, when the ship is swayed by the waves, the exhaust gas purification apparatus 1000 of the marine diesel engine is not stably fixed to the floor structure 1, and there is a problem that sliding movement occurs in the forward and backward directions. have.

In addition, the first fastening hole 321 of the first leg support part 300 disposed close to the inlet port 110 may be formed in a long hole shape, and the second fastening hole 421 may be formed in a hole shape, In this case, since the second leg support portion 400 provided on the outlet 120 side becomes a fixed point, there is a problem that thermal expansion of the body portion 100 cannot be effectively performed.

Accordingly, a first fastening hole 321 of the hole hole is formed at the first leg support part 300 to be a fixed point, and a second fastening hole 421 of the long hole is formed at the second leg support part 400 to be an expansion point. By doing so, thermal expansion of the main body 100 can be effectively performed. In addition, bending of the first leg support 300 and the second leg support 400 or cracks in the body 100 may be prevented.

Meanwhile, a first seating groove 322 may be formed on an upper surface of the first base member 320.

The first seating groove 322 is made to be connected to the first fastening hole 321. Here, the first seating groove 322 forms a space in which the head member 920 provided in the fastening part 900 is inserted.

The head member 920 is inserted into the first seating groove 322 while the fixing member 910 is fixed to the floor structure 1, so that the first base member 320 is detached from the fastening part 900 It is made to prevent.

The first seating groove 322 may limit the sliding movement range of the main body 100 together with the first fastening hole 321. That is, the rim of the first seating groove 322 may be made to come into contact with the head member 920 when the body portion 100 is sliding, thereby limiting the sliding movement range of the body portion 100.

Here, the fastening part 900 for fixing the first base member 320 to be slidable on the floor structure 1 is not limited to a specific configuration, and can be made in various forms.

Meanwhile, a second seating groove 422 may be formed on the upper surface of the second base member 420.

The second seating groove 422 is made to be connected to the second fastening hole 421. Here, the head member 920 is inserted into the second seating groove 422 in a state where the fixing member 910 is inserted and fixed to the floor structure 1, so that the second base member 420 deviates from the fastening part 900 It is made to prevent.

The second seating groove 422 may limit the sliding movement range of the main body 100 together with the second fastening hole 421.

On the other hand, referring to Figure 3, the side leg support 500 is coupled to the side of the main body 100, is made to fix the main body 100 to the side fixing surface (not shown).

The side leg support 500 may include a side support member 510 and a connection member 520.

A plurality of side support members 510 are provided on the side of the main body 100. At this time, the side support member 510 is coupled to the side of the main body 100 at a predetermined interval in the height direction of the main body 100.

And the connecting member 520 is made to connect a plurality of spaced side support members 510.

A side fastening hole 521 is formed in the connection member 520, and the fastening part 900 may be coupled to the side fixing surface in a state inserted through the side fastening hole 521. The side fastening hole 521 may have a long hole formed in a lengthwise direction in the longitudinal direction of the main body 100.

Accordingly, when the body portion 100 is thermally expanded, the side leg support portion 500 may be slid from the side fixing surface.

Meanwhile, a side seating groove (not shown) may be formed on the inner surface of the connecting member 520.

The side seating groove is made to be connected to the side fastening hole 521, and the head member 920 may be inserted into the side seating groove.

The side seating groove may limit the sliding movement range of the main body 100 together with the side fastening hole 521.

As described above, the first leg support 300, the second leg support 400 and the side leg support 500 according to the present invention are made to be slidable during thermal expansion of the main body 100, so that the main body 100 ) Can be prevented from cracking and the leg support is bent or damaged.

However, this is only a preferred embodiment of the present invention, and the scope of rights of the present invention is not limited by the scope of description of these embodiments.

The above description of the present invention is for illustration only, and those skilled in the art to which the present invention pertains can understand that the present invention can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the following claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted to be included in the scope of the present invention.

1: Floor structure
100: main body
101: accommodation space
110: inlet
120: outlet
200: catalyst filter module
300: first leg support
310: first support member
320: first base member
321: first fastening hole
322: first seating groove
400: second leg support
410: second support member
420: second base member
421: second fastening hole
422: second seating groove
500: side leg support
510: side support member
520: connecting member
521: Side fastening hole
900: fastening
910: fixing member
920: head member
1000: Exhaust gas purification device for marine diesel engines

Claims (7)

One side is provided with an inlet, the other side is provided with an outlet, the main body portion formed with a receiving space therein;
A catalytic filter module provided in the accommodation space and filtering exhaust gas of a marine diesel engine flowing into the inlet and discharged to the outlet;
A first leg support portion coupled to a lower portion of the main body portion on the inlet side and supporting the main body portion; And
It is coupled to the lower portion of the body portion of the outlet side, and includes a second leg support portion for supporting the body portion,
The inlet and the outlet are provided in a straight line with respect to the longitudinal direction of the main body, and the exhaust gas is introduced into the inlet and discharged to the outlet so that the thermal expansion of the main body is effectively performed in the longitudinal direction of the main body. A first fastening hole of a hole hole is formed in the first leg support portion to be a fixed point of the main body portion, and a second fastening hole of a long hole hole is formed in the second leg support portion to be an extended point of the main body portion,
When the body portion thermally expands, the first leg support portion and the second leg support portion are made to slide from the floor structure, but the sliding distance of the second leg support portion relative to the length direction of the body portion is the sliding distance of the first leg support portion Is made to be longer,
The first leg support portion includes a first support member coupled to a lower portion of the body portion; And a first base member coupled to the lower portion of the first support member, the first fastening hole of the hole hole being formed, and the second leg support portion is a second support member coupled to the lower portion of the body portion; And a second base member coupled to the lower portion of the second support member and having the second fastening hole of the long hole,
A first seating groove connected to the first fastening hole is formed on an upper surface of the first base member, and a second seating groove connected to the second fastening hole is formed on an upper surface of the second base member,
The fixing member provided in the fastening part is inserted through the first fastening hole and the second fastening hole, and the head member provided in the fastening part is inserted into the first seating groove and the second seating groove, and when the main body is sliding , The fixing member and the head member is made to limit the sliding range of the main body,
The catalytic filter module is spaced apart at predetermined intervals along the longitudinal direction of the main body, and the catalytic filter module disposed closer to the inlet is a catalyst provided in the catalytic filter module than the catalytic filter module disposed closer to the outlet. The size of the porous portion of the filter is formed to be larger, and the catalytic filter module is an exhaust gas purification device for a marine diesel engine, which is filtered step by step with respect to the exhaust gas of a marine diesel engine.
According to claim 1,
The length of the second fastening hole is formed longer than the first fastening hole with respect to the longitudinal direction of the body portion, and the lengths of the first fastening hole and the second fastening hole correspond to the width direction of the body portion. Marine diesel engine exhaust gas purification device.
According to claim 2,
When the body portion is thermally expanded, the first leg support portion and the second leg support portion are configured to be slidable with respect to the width direction of the body portion.
delete According to claim 1,
The length of the second fastening hole with respect to the longitudinal direction of the main body portion, the exhaust gas purification apparatus of a marine diesel engine, characterized in that made to have a length of 1.5 to 2.5 times the length of the first fastening hole.
According to claim 1,
It is coupled to the side of the body portion, and further includes a side leg support portion for supporting the body portion,
The side leg support,
A plurality of side support members formed at predetermined intervals and coupled to side surfaces of the body portion; And
Exhaust gas purification device for a marine diesel engine connected to the side support member, but having a side fastening hole made of a long hole and a connecting member having a side seating groove connected to the side fastening hole.
The method of claim 6,
When the body portion is thermally expanded, the side leg support portion is slidable from the side fixing surface, and the side fastening hole is formed to be elongated in the longitudinal direction of the body portion, the exhaust gas purification device for a marine diesel engine.

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