KR102329529B1 - Exhaust gas control valve for diverter type scrubber - Google Patents

Abstract

Disclosed is a diverter exhaust gas control valve for a scrubber. The diverter exhaust gas control valve for a scrubber comprises: a valve body (110) which has an exhaust pipe (111) through which exhaust gas resulting from combustion of a main engine (10) of a ship is exhausted, airtightly coupled to a first side, a first discharge pipe (112) transferring the exhaust gas to the scrubber (150) and airtightly coupled to a second side, and a bypass pipe (113) branching and bypassing the exhaust gas to directly discharge to the outside and airtightly coupled to a third side; a flow path opening and closing unit which consists of a rotary shaft (121) coupled to one edge of the valve body (110) for hinged rotation, a rotary member (122) connected to the rotary shaft (121) and extended, a pair of discs (123) having a shape corresponding to shapes of a discharge hole (A) of the first discharge pipe (112) and a discharge hole (B) of the bypass pipe (113) and coupled to each other to form respective separation spaces on both sides of the rotary member (122), and which selectively opens and closes the discharge hole (A) of the first discharge pipe and the discharge hole (B) of the bypass pipe (113) through rotation about the rotary shaft (121); a first air injection hole (130) which is formed on one side of the first discharge pipe (112); and a second air injection hole (140) which is formed on one side of the bypass pipe (113). The diverter exhaust gas control valve for a scrubber forms an air sealing film by injecting air into the separation spaces, and thus prevents reverse flow or leakage of the exhaust gas.

Description

Exhaust gas control valve for diverter type scrubber

The present invention relates to an exhaust gas control valve for a diverter type scrubber, which can prevent reverse flow and leakage of exhaust gas by forming an air sealing film at an exhaust gas outlet.

In general, in a ship, in order to change the direction of exhaust gas discharged from the main engine 10 and discharge it to the outside, a 2-way triple-offset butterfly valve 20 is applied, and the two valves 20 selectively Controlled to the outside directly from the main engine 10 or from the main engine 10 through the scrubber 30 is discharged to the outside.

On the other hand, the scrubber 30 is provided to purify the sulfur oxide in the exhaust gas.

However, as shown in FIG. 1, the butterfly disk 21 obstructs the flow of the fluid, and the amount of transportable exhaust gas is small compared to the size of the pipe, so the flow rate loss is large.

In addition, during maintenance, a separate maintenance hole must be installed in the pipe or the valve must be dismantled. For example, in the case of a small valve, the inside must be checked and inspected after dismantling the valve, and In the case of the valve, it has to be inspected by entering the inside through the maintenance entrance separately installed in the pipe, which requires excessive maintenance cost and time.

In addition, due to the structural deformation of the valve due to the high temperature and high pressure of the exhaust gas, airtightness is not completely achieved, so there is a problem in that the exhaust gas flows backward or leaks.

Korean Patent Publication No. 1444193 (3-way control valve, 2014.09.26)

The technical problem to be achieved by the spirit of the present invention is to provide an exhaust gas control valve for a diverter type scrubber, which can prevent backflow and leakage of exhaust gas even when structurally deformed by forming an air sealing film at the outlet in a high-temperature and high-pressure environment. have.

In order to achieve the above object, the present invention provides an exhaust pipe through which exhaust gas due to combustion of the main engine of a ship is exhausted is airtightly coupled to the first side, and the exhaust gas is branched on the second side to directly discharge to the overboard. The valve body is airtightly coupled, and the first discharge pipe for transporting the exhaust gas to the scrubber is airtightly coupled to the third side, and between the bypass pipe and the first discharge pipe, a hinge is rotated at one corner of the valve body formed in a shape corresponding to the shape of the rotating shaft, the rotating member connected to the rotating shaft and extending, the outlet of the bypass pipe and the outlet of the first outlet, and coupled to form spaced spaces on both sides of the rotating member, respectively A flow path opening and closing part for selectively opening and closing the outlet of the bypass pipe or the outlet of the first outlet pipe through rotation about the rotation axis of the rotating member, including a pair of disks that Including a first air inlet and a second air inlet formed through one side of the first exhaust pipe, when the bypass pipe is closed by the disk, air is introduced into the separation space in contact with the bypass pipe through the first air inlet. An air sealing film is formed by injecting, and when the first discharge pipe is closed by the disk, air is injected into the separation space in contact with the first discharge pipe through the second air inlet to form an air sealing film, and the exhaust gas is reversed And to prevent leakage, it provides an exhaust gas control valve for a diverter type scrubber.

Here, it may further include a gap maintaining member for maintaining a gap so as to form a space between the rotating member and each of the disks.

On the other hand, in the present invention, the exhaust pipe through which the exhaust gas due to the combustion of the main engine of the ship is exhausted is airtightly coupled to the first side, and the bypass pipe for branching the exhaust gas and discharging it directly to the overboard is airtightly coupled to the second side. and a third side of the valve body, to which the first discharge pipe for transporting the exhaust gas to the scrubber is airtightly coupled, and a rotation shaft coupled to a hinge rotation at one corner of the valve body between the bypass pipe and the first discharge pipe; A rotating member connected to the rotating shaft and extending and selectively opening and closing the outlet of the bypass pipe or the outlet of the first outlet through rotation of the rotating member about the rotating shaft, the flow path opening and closing part, the second of the valve body A first cover pipe that is protruded into the inner space of the valve body along the periphery of the coupling portion to which the bypass pipe is coupled to the side surface, and the protruding end is closed by the rotating member, the first cover pipe on the third side of the valve body The discharge pipe is formed to protrude into the inner space of the valve body along the periphery of the coupling part to which the discharge pipe is coupled, and the protruding end is a second cover pipe that can be closed by the rotating member, the inner periphery of the first cover pipe and the right side of the valve body A first air inlet disposed and formed through the space between the outer periphery of the hall tube and a second air inlet disposed and penetrating into the space between the inner periphery of the second cover pipe and the outer periphery of the first outlet pipe in the valve body. , When the bypass pipe is closed by the flow path opening and closing part, air is injected into the space between the first cover pipe and the bypass pipe through the first air inlet to form an air sealing film, and the first discharge pipe by the flow path opening and closing part When closed, air is injected into the space between the second cover pipe and the first exhaust pipe through the second air inlet to form an air sealing film, thereby preventing backflow and leakage of the exhaust gas. Exhaust gas for a diverter type scrubber A control valve is provided.

In addition, when the exhaust gas by combustion of high sulfur oil flows in from the exhaust pipe, the rotating member rotates to close the bypass pipe so that the exhaust gas flows to the first exhaust pipe, and the exhaust gas by combustion of low sulfur oil from the exhaust pipe When introduced, the rotating member may rotate to close the first discharge pipe so that the exhaust gas flows into the bypass pipe.

In addition, the scrubber removes sulfur oxides of the exhaust gas flowing in from the first discharge pipe and discharges the purified exhaust gas to the outside through the second discharge pipe, and the International Maritime Organization's marine pollution prevention regulations apply to sea navigation or When anchoring to which the International Maritime Organization's Marine Pollution Prevention Regulations apply, the exhaust gas is branched through the bypass pipe to discharge the exhaust gas containing less than the standard of sulfur oxides through the bypass pipe by using low-sulfur oil, When sailing in a sea area to which the International Maritime Organization's Marine Pollution Prevention Regulations do not apply or at anchorage to which the International Maritime Organization's Marine Pollution Prevention Regulations do not apply, reduce sulfur oxides in the exhaust gas to below the standard and discharge it through the second discharge pipe. can do.

In addition, air having a pressure higher than the pressure of the exhaust gas may be supplied through the first air inlet and the second air inlet.

In addition, an openable and openable maintenance panel may be attached to the fourth side surface of the valve body to maintain the flow path opening/closing unit by opening the maintenance panel.

In addition, a cooling jacket for spraying cooling water may be formed on the maintenance panel of the valve body.

According to the present invention, an air sealing film is formed at the outlet in a high-temperature and high-pressure environment to prevent backflow and leakage of exhaust gas even in structural deformation.

In addition, through one diverter type valve, it is possible to change the direction of exhaust gas emission to the scrubber or to the outside, and depending on whether sailing or anchoring in the sea area to which the sulfur oxide emission control area is applied, There is an effect that it can be discharged to the outside by reducing it below the standard, or directly discharged to the outside of the ship.

In addition, it is possible to additionally secure an installation space by reducing the pipe length, and there is an effect of reducing the weight.

Furthermore, there is an effect of making it easy to inspect and clean the inside of the valve body, simplify the structure, increase the ease of maintenance, and reduce the number of inspection targets.

1 illustrates an exhaust gas control system for ships according to the prior art.
2 shows an exhaust gas control valve for a diverter type scrubber according to an embodiment of the present invention.
3 is a side view and a plan view of the exhaust gas control valve for a diverter type scrubber of FIG. 2, respectively.
4 to 6 respectively show the operation of the hydraulic opening/closing part of the exhaust gas control valve for the diverter type scrubber of FIG. 2 .
7 illustrates the effect of installing the exhaust gas control valve for the diverter type scrubber of FIG. 2 .
8 is an illustration of the ship exhaust gas regulation of the International Maritime Organization.

Hereinafter, embodiments of the present invention having the above-described characteristics will be described in more detail with reference to the accompanying drawings.

In the exhaust gas control valve for a diverter type scrubber according to an embodiment of the present invention, the exhaust pipe 111 through which exhaust gas due to combustion of the main engine 10 of the ship is exhausted is airtightly coupled to the first side, and the second A bypass pipe 112 that diverts the exhaust gas to branch and directly discharge to the outside is airtightly coupled to the side, and the first exhaust pipe 113 for transporting the exhaust gas to the scrubber 150 is airtightly coupled to the third side. of the valve body 110 , the rotation shaft 121 coupled to rotate hingedly on one edge of the valve body 110 , the rotation member 122 connected to the rotation shaft 121 and extended, and the bypass pipe 112 . A pair of disks 123 are formed in a shape corresponding to the shape of the outlet (A) and the outlet (B) of the first outlet pipe 113, and are coupled to both sides of the rotating member 122 to form a spaced space, respectively. A flow path opening and closing part, a bypass pipe ( A spaced space between the rotating member 112 and each disk, including a first air inlet 130 formed through one side of 112 and a second air inlet 140 penetrating through one side of the first discharge pipe 113. The main point is to inject air to form an air sealing film to prevent backflow and leakage of exhaust gas, and more specifically, through the first air inlet 130 when the bypass pipe 112 is closed by a disk. Air is injected into the spaced space in contact with the bypass pipe 112 to form an air sealing film, and when the first outlet pipe 113 is closed by a disk, air is introduced into the spaced space in contact with the first outlet pipe through the second air inlet 140 through the disk. To provide an exhaust gas control valve for a diverter type scrubber, which forms an air sealing film by injecting the gas to prevent backflow and leakage of exhaust gas.

Hereinafter, the configuration of the exhaust gas control valve for the above-described diverter type scrubber will be described in detail with reference to FIGS. 2 to 8 .

First, the valve body 110, as shown in FIGS. 2 to 4, the exhaust pipe 111 through which exhaust gas due to combustion of the ship's main engine (M/E; Main Engine) 10 is exhausted is produced. It is airtightly coupled to the first side, and a bypass pipe 112 for branching and bypassing the exhaust gas for direct discharge to the outside is airtightly coupled to the second side, and the exhaust gas is scrubbed by a scrubber 150 on the third side. The first discharge pipe 113 transported to the furnace is airtightly coupled.

Here, the exhaust pipe 111, the bypass pipe 112, and the first exhaust pipe 113 may be disposed to be spaced apart from each other at an angle of 90°. In more detail, the third side of the valve body 110 to which the first discharge pipe 113 connected to the scrubber 150 is coupled is formed on a surface opposite to the first side coupled to the exhaust pipe 111 in a straight direction. The second side to which the bypass pipe 112 is coupled is disposed at a 90° angle with the first side, the exhaust pipe 111 and the bypass pipe 112 are spaced apart from each other at a 90° angle, and the bypass pipe 112 and the first discharge pipe 113 are arranged to be spaced apart at an angle of 90°, and the exhaust pipe 111 and the first discharge pipe 113 are preferably configured to be arranged on the same straight line.

Next, as shown in FIGS. 2, 4, and 5, the flow path opening and closing part is hingedly coupled to one corner of the valve body 110 between the bypass pipe 112 and the first discharge pipe 113 to rotate the rotation shaft 121 ), a rotating member 122 connected to the rotating shaft 121 and extending in the vertical direction from the rotating shaft 121, and the outlet (A) of the bypass pipe 112 and the outlet (B) of the first outlet pipe (113) It is formed in a disk shape corresponding to the shape, and is composed of a pair of disks 123 coupled to both sides of the rotation member 122 to form a spaced space, respectively, the rotation shaft 121 by the rotation drive unit (not shown). By selectively opening and closing the outlet (A) of the bypass pipe (112) or the outlet (B) of the first outlet pipe (113) through 90° rotation centered on the bypass pipe (112) or the first outlet pipe (113) convert the euro to

That is, the flow path opening/closing unit, as shown in FIG. 6 , transports the exhaust gas at a maximum of 0.1 bar and 400° C. from the main engine 10 to the scrubber 150 through the first discharge pipe 113 or (a), it can be discharged directly to the outboard atmosphere through the bypass pipe 112 (b).

For example, as shown on the right side of FIG. 5 ( b ), when exhaust gas by high sulfur oil combustion flows in from the exhaust pipe 111 , the disk 123 rotates to close the outlet A of the bypass pipe 112 . to allow the exhaust gas to flow into the first discharge pipe 113, and as shown on the left side of FIG. Thus, the first discharge pipe 113 may be closed to allow the exhaust gas to flow to the bypass pipe 112 .

On the other hand, referring to Figure 5 (b), the rotation member 122 and each disk 123 between the further comprising a gap maintaining member 124 for maintaining a gap to form a spaced space, the valve body (110) In the internal high-temperature and high-pressure environment, the space between each disk 123 or the space between the rotating member 122 and the disk 123 is reduced so that the spaced space, which is an air flow path due to the deformation of the disk 123, is not narrowed or closed. It can be reinforced to keep. In addition, the spacing member 124 may further include a fine spacing adjustment unit for adjusting the spacing forming the separation space between the rotating member 122 and each disk 123 .

Next, the first air inlet 130, as shown in FIGS. 4 and 5, is formed through one side of the bypass pipe 112 to face the rotation shaft 121, and is formed by a large air fan (not shown). Air is injected at high pressure into the space between the disks 123 of the flow path opening and closing member 120 to compensate for the mechanical closing of the outlet A of the bypass pipe 112 by the disk 123 to form an air sealing film that is an air curtain Thus, it is possible to prevent leakage to the closed bypass pipe 112 instead of the open first discharge pipe 113 and to prevent a reverse flow from the bypass pipe 112 to the inner space of the valve body 110 .

Next, the first cover pipe 160 is, as shown in FIGS. 4 and 5, the valve body 110 along the perimeter of the coupling portion where the bypass pipe 112 is coupled to the second side of the valve body 110. It is formed to protrude into the inner space, and at this time, the first air inlet 130 is disposed and formed through the space between the inner periphery of the first cover tube 160 and the outer periphery of the bypass tube 112 in the valve body 110, The high-pressure air injected into the valve body through the first air inlet is filled into the space between the first cover pipe 160 and the bypass pipe 112 .

In addition, the end protruding into the inner space of the valve body 110 of the first cover tube 160 is in contact with the rotating member 122 and can be closed by the rotating member 122 .

For this reason, when the bypass tube 112 is closed by the disk 123 in contact with the bypass tube 112 among the pair of disks 123 according to the rotation of the rotation member 122 , the bypass tube 112 is closed by the rotation member 122 . The first cover pipe 160 is also closed, and at this time, high-pressure air is injected through the first air inlet 130 to fill the space between the bypass pipe 112 and the first cover pipe 160 with high-pressure air, and also , the space between the rotating member 122 and the disk 123 in contact with the bypass pipe 112 is also filled with high-pressure air, so that an air sealing film is formed around the bypass pipe 112 to more effectively maintain an airtight state Therefore, it is possible to prevent leakage to the closed bypass pipe 112 rather than the open first discharge pipe 113 and to prevent a reverse flow from the bypass pipe 112 to the inner space of the valve body 110 .

Next, as shown in FIGS. 4 and 5 , the second air inlet 140 is formed through one side of the first discharge pipe 113 opposite to the rotation shaft 121, and is installed in a large air fan (not shown). Air as an air curtain by injecting high pressure into the space between the disks 123 of the flow path opening and closing member 120 by the disk 124 to compensate for the mechanical closing of the outlet (B) of the first discharge pipe 113 by the disk 124 . By forming a sealing film, it is possible to prevent leakage to the closed first discharge pipe 113 instead of the open bypass pipe 112, and to prevent backflow from the first discharge pipe 113 to the inner space of the valve body 110 have.

Next, the second cover pipe 170 is, as shown in FIGS. 4 and 5 , the valve body 110 along the periphery of the coupling part to which the first discharge pipe 113 is coupled to the third side of the valve body 110 . ) is formed to protrude into the inner space, and at this time, the second air inlet 140 is disposed and formed through the space between the inner periphery of the second cover tube 170 and the outer periphery of the first outlet tube 113 in the valve body 110 , , the high-pressure air injected into the valve body through the second air inlet 140 is filled into the space between the second cover pipe 170 and the first discharge pipe 113 .

In addition, the end protruding into the inner space of the valve body 110 of the second cover tube 170 is in contact with the rotating member 122 and can be closed by the rotating member 122 .

For this reason, when the first discharge pipe 113 is closed by the disk 123 in contact with the first discharge pipe 113 among the pair of disks 123 according to the rotation of the rotating member 122, the rotating member 122 The second cover pipe 170 is also closed by the In addition, the spaced space between the rotating member 122 and the disk 123 in contact with the first discharge pipe 113 is also filled with high-pressure air, so that an air sealing film is formed around the first discharge pipe 113 to more effectively airtight Since the state can be maintained, leakage to the closed first discharge pipe 113 rather than the open bypass pipe 112 is prevented, and reverse flow from the first discharge pipe 113 to the inner space of the valve body 110 is prevented. can do.

On the other hand, referring to (a) of FIG. 6, high sulfur oil is used during non-ECA navigation, for example, when sailing or anchoring in a sea area to which the International Maritime Organization (IMO) marine pollution prevention regulations do not apply. Exhaust gas is transferred to the scrubber 150 through the first discharge pipe 113, and the sulfur oxide is reduced below the standard in the scrubber 150 to be discharged through the second discharge pipe 151, (b) of FIG. For reference, when sailing or anchoring in a sea area to which the International Maritime Organization's marine pollution prevention regulations apply, low-sulfur oil is used, so the exhaust gas is branched through the bypass pipe 112 to be discharged overboard.

For example, the scrubber 150 removes or reduces sulfur oxides contained in the exhaust gas supplied from the valve body 110 through the first exhaust pipe 113 and waits the purified exhaust gas through the second exhaust pipe 151 . The scrubber 150 sprays seawater (open type scrubber) or alkaline washing water (closed type) to the exhaust gas to generate sulfur oxides (SO _X ) H ₂ SO _{3 ,} H ₂ SO ₄ , Na ₂ SO ₃ , NaHSO ₃ , NaHSO ₄ or Na ₂ SO ₄ Substituted with, etc., to remove sulfur oxides as in [Formula 1] and [Formula 2], which is a chemical reaction by the following open scrubber and [Formula 2] by a closed scrubber. can

For reference, according to the International Maritime Organization's strengthening of ship emission gas regulations, in 2020, the International Maritime Organization (IMO) must meet the 0.1% sulfur content of ship fuel oil when entering or anchoring ECA's due to the entry into force of the Marine Pollution Prevention Regulation (MARPOL ANNEX VI).

On the other hand, when the ship emission gas regulation of the above International Maritime Organization is summarized and exemplified as shown in FIG. 8 .

In addition, as shown in FIGS. 2 and 4, an openable and openable maintenance panel 114 is attached to the fourth side of the valve body 110 to maintain the flow path opening and closing part by opening the maintenance panel. can That is, by making it easy to disassemble and assemble through the maintenance panel 114, without the need to install a separate maintenance entrance, it is easy to check and clean the inside of the valve body 110, and It is possible to simplify and lighten the structure, increase maintenance easiness, and reduce the number of inspection objects. Accordingly, it is possible to reduce the time required for dismantling the valve, remove the entrance/exit installation space for maintenance, and reduce the cost and time for maintenance, thereby providing significant cost savings.

On the other hand, although not shown, a cooling jacket for spraying cooling water is formed on the maintenance panel 114 of the valve body 110 to suppress excessive temperature rise due to high-temperature exhaust gas to the valve body 110 or the flow path opening and closing part. It is also possible to improve durability by preventing deformation of the.

7 illustrates the effect of the installation of the exhaust gas control valve for the diverter type scrubber of FIG. 2 . Referring to this, the exhaust pipe 111 , the bypass pipe 112 , and the first discharge pipe 113 are three pipes Since only one flow path opening/closing part for opening and closing is required for this connection, it is possible to reduce the pipe length of 10 m to 20 m connecting the main engine 10 and the outside when applied to an actual ship, thereby securing additional installation space. In addition, it is possible to reduce the weight and the number of valves compared to the prior art.

In addition, since there is no element impeding the flow of exhaust gas inside the valve body 110 , the pressure drop due to the flow path opening/closing unit supplied to the scrubber 150 is reduced compared to the conventional butterfly valve.

Therefore, by the configuration of the exhaust gas control valve for the diverter type scrubber as described above, it is possible to change the exhaust gas discharge direction to the scrubber or to the outside through one diverter type valve, and to regulate the amount of sulfur oxides Depending on whether the area is sailing or anchored in the sea area to which the area is applied, it is possible to reduce the sulfur oxides in the exhaust gas to below the standard and discharge it to the outside or directly to the outside of the ship, and reduce the length of the pipe to secure additional installation space. It is possible to reduce the weight, prevent backflow and leakage of exhaust gas by forming an air sealing film, facilitate internal inspection and cleaning of the valve body, simplify the structure, increase ease of maintenance, and reduce inspection targets can do it

The embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention, and do not represent all the technical spirit of the present invention, so various equivalents that can replace them at the time of the present application It should be understood that there may be water and variations.

110: valve body 111: exhaust pipe
112: bypass pipe 113: first discharge pipe
114: maintenance panel` 121: rotation shaft
122: rotating member 123: disk
124: gap maintaining member 130: first air inlet
140: second air inlet 150: scrubber
151: second discharge pipe 160: first cover pipe
170: second cover tube

Claims (8)

An exhaust pipe through which exhaust gas due to combustion of the ship's main engine is exhausted is airtightly coupled to the first side, and a bypass pipe for branching and discharging the exhaust gas directly to the overboard is airtightly coupled to the second side, and on the third side The first discharge pipe for transferring the exhaust gas to the scrubber is airtightly coupled, the valve body;
A rotating shaft hingedly coupled to one corner of the valve body between the bypass pipe and the first discharge pipe, a rotating member connected to the rotating shaft and extending, and the outlet of the bypass pipe and the outlet of the first discharge pipe Formed in a corresponding shape and including a pair of disks coupled to each side to form a spaced space on both sides of the rotating member, the outlet of the bypass pipe or the first through rotation about the rotational axis of the rotating member A flow path opening and closing unit for selectively opening and closing the outlet of the discharge pipe;
a first air inlet formed through one side of the bypass pipe; and
Including; a second air inlet formed through one side of the first discharge pipe;
When the bypass pipe is closed by the disk, air is injected into the separation space in contact with the bypass pipe through the first air inlet to form an air sealing film,
When the first discharge pipe is closed by the disk, air is injected into the separation space in contact with the first discharge pipe through the second air inlet to form an air sealing film,
Exhaust gas control valve for diverter type scrubber that prevents backflow and leakage of exhaust gas.
According to claim 1,
Exhaust gas control valve for a diverter type scrubber, characterized in that it further comprises a gap maintaining member for maintaining a gap so as to form a space between the rotating member and each of the disks.
An exhaust pipe through which exhaust gas due to combustion of the ship's main engine is exhausted is airtightly coupled to the first side, and a bypass pipe for branching and discharging the exhaust gas directly to the overboard is airtightly coupled to the second side, and on the third side The first discharge pipe for transferring the exhaust gas to the scrubber is airtightly coupled, the valve body;
A rotary shaft hingedly coupled to one edge of the valve body between the bypass pipe and the first discharge pipe, a rotary member connected to the rotary shaft and extended, and the right through rotation about the rotary shaft of the rotary member a flow path opening and closing unit for selectively opening and closing the outlet of the hall or the outlet of the first outlet;
a first cover pipe protruding into the inner space of the valve body along the periphery of the coupling portion to which the bypass pipe is coupled to the second side of the valve body, the protruding end of which can be closed by the rotating member;
a second cover pipe protruding into the inner space of the valve body along the periphery of the coupling part to which the first discharge pipe is coupled to the third side surface of the valve body, the protruding end of which can be closed by the rotating member;
a first air inlet formed through the valve body as a space between the inner periphery of the first cover pipe and the outer periphery of the bypass pipe; and
A second air inlet is disposed in the valve body as a space between the inner periphery of the second cover pipe and the outer periphery of the first discharge pipe and formed through; including;
When the bypass pipe is closed by the flow path opening and closing unit, air is injected into the space between the first cover pipe and the bypass pipe through the first air inlet to form an air sealing film,
When the first discharge pipe is closed by the flow path opening and closing part, air is injected into the space between the second cover pipe and the first discharge pipe through the second air inlet to form an air sealing film,
Exhaust gas control valve for diverter type scrubber that prevents backflow and leakage of exhaust gas.
4. The method of claim 1 or 3,
When the exhaust gas by combustion of high sulfur oil flows in from the exhaust pipe, the rotating member rotates to close the bypass pipe so that the exhaust gas flows into the first exhaust pipe, and when the exhaust gas by combustion of low sulfur oil flows in from the exhaust pipe An exhaust gas control valve for a diverter type scrubber, characterized in that the rotating member rotates to close the first discharge pipe so that the exhaust gas flows to the bypass pipe.
4. The method of claim 1 or 3,
The scrubber removes sulfur oxides of the exhaust gas flowing in from the first discharge pipe and discharges the purified exhaust gas to the outside through the second discharge pipe,
When sailing in a sea area to which the International Maritime Organization's Marine Pollution Prevention Regulations apply or when anchoring to which the International Maritime Organization's Marine Pollution Prevention Regulations apply, the exhaust gas is branched through the bypass pipe to reduce sulfur oxides below the standard by using low-sulfur oil. to discharge the contained exhaust gas through the bypass pipe,
When sailing in a sea area to which the International Maritime Organization's Marine Pollution Prevention Regulations do not apply or when anchoring to which the International Maritime Organization's Marine Pollution Prevention Regulations do not apply, reduce the sulfur oxides in the exhaust gas to below the standard and discharge it through the second discharge pipe. Exhaust gas control valve for a diverter type scrubber, characterized in that.
4. The method of claim 1 or 3,
An exhaust gas control valve for a diverter type scrubber, characterized in that the air having a pressure higher than that of the exhaust gas is supplied through the first air inlet and the second air inlet.
4. The method of claim 1 or 3,
An exhaust gas control valve for a diverter type scrubber, characterized in that an openable and openable maintenance panel is attached to a fourth side surface of the valve body to maintain the flow path opening and closing part by opening the maintenance panel.
8. The method of claim 7,
An exhaust gas control valve for a diverter type scrubber, characterized in that a cooling jacket for spraying coolant is formed on the maintenance panel of the valve body.

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