JP2019162963A - Ship - Google Patents

Abstract

To provide a ship which enables a scrubber body and a scrubber exhaust gas pipe to be connected with an inexpensive structure when an exhaust gas cleaning system is installed.SOLUTION: A ship 1 includes: an engine exhaust gas pipe which discharges exhaust gas discharged from an engine to the outside of the ship; and an exhaust gas cleaning system 7 which takes the exhaust gas thereinto to clean the exhaust gas and discharge the cleaned exhaust gas to the outside of the ship. The exhaust gas cleaning system 7 includes: a scrubber body 21 which uses water to clean the exhaust gas discharged from the engine; an exhaust gas leading-in pipe which connects the engine exhaust gas pipe with the scrubber body 21; a scrubber exhaust gas pipe 23 which discharges the cleaned exhaust gas to the outside of the ship; and a seal member 203 provided between the scrubber body 21 and the scrubber exhaust gas pipe 23 and made of resin or rubber.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a ship equipped with an exhaust gas cleaning system.

  In recent years, a ship equipped with an exhaust gas cleaning system (hereinafter also referred to as “EGCS”; “EGCS” = Exhaust Gas Cleaning System ”) is known as a countermeasure to environmental regulations for exhaust gas (Patent Document 1). The EGCS has a scrubber body that cleans exhaust gas discharged from internal combustion engines, external combustion engines, etc., a scrubber exhaust pipe that discharges the cleaned exhaust gas to the outside of the ship, and a drain pipe that extends from the scrubber body to the hull. And at least.

JP 2012-172647 A

  The connection structure between the scrubber body and the exhaust gas pipe for scrubber needs to support thermal expansion and contraction. Here, since the diameter of the scrubber exhaust gas pipe is as large as several meters, there is a problem that the apparatus becomes expensive when a metal or other expansion joint is used for such a connection structure.

  Then, this invention makes it a subject to provide the ship which can connect the scrubber main body and the exhaust gas pipe | tube for scrubbers with an inexpensive structure in the case of installation of an exhaust gas cleaning system.

  In order to solve the above problems, the present invention provides an exhaust gas pipe for an engine that exhausts exhaust gas discharged from an engine to the outside of the ship, and an exhaust gas that takes in and cleans the exhaust gas and discharges the exhaust gas after cleaning to the outside of the ship. The exhaust gas cleaning system connects a scrubber body that cleans the exhaust gas discharged from the engine by using water, the engine exhaust pipe, and the scrubber body. An exhaust gas inlet pipe, a scrubber exhaust gas pipe for discharging the cleaned exhaust gas to the outside of the ship, and a resin or rubber seal member provided between the scrubber body and the scrubber exhaust gas pipe And

  According to such a configuration, since water (seawater or the like) is used for cleaning the exhaust gas in the scrubber body, the temperature of the exhaust gas flowing through the scrubber exhaust pipe is reduced. Therefore, it is possible to connect the scrubber body and the exhaust gas pipe for scrubber that can be suitably adapted to thermal expansion without corrosion by using a resin or rubber seal member without using an expensive expansion joint such as metal. The structure can be provided at low cost.

  Said ship WHEREIN: It is preferable to provide the urging | biasing part which urges | biases one of the said scrubber main body and the exhaust gas pipe for scrubbers to the other.

  According to such a configuration, even when the seal member expands and contracts due to the thermal expansion of the scrubber main body and the scrubber exhaust gas pipe, the biasing portion suitably prevents loosening of the connecting portion of the scrubber main body and the scrubber exhaust gas pipe. be able to.

  According to the ship of the present invention, when installing the exhaust gas cleaning system, the scrubber body and the scrubber exhaust pipe can be connected with an inexpensive structure.

It is the cross-sectional view which looked at the ship which concerns on embodiment of this invention from the stern side. It is the side view which looked at the ship concerning this embodiment from the starboard side. It is an enlarged side view which shows between an upper deck and A deck. It is the schematic which shows the exhaust-gas inlet pipe periphery. It is an enlarged view which shows the exhaust-gas inlet pipe periphery. It is a schematic side view which shows the inside of a scrubber chamber. It is a schematic plan view of a scrubber chamber. It is an enlarged side view which shows the connection structure of the scrubber main body and the exhaust gas pipe for scrubbers. It is the elements on larger scale of FIG. It is an enlarged side view which shows the support structure of the exhaust gas pipe for scrubbers. It is an enlarged side view which shows the support structure of the exhaust gas pipe for scrubbers. It is the schematic which looked at the connection part from the radial direction outer side of the exhaust gas pipe for scrubbers. It is the XIII-XIII sectional view taken on the line of FIG.

<Overall configuration>
The ship which concerns on embodiment of this invention is demonstrated in detail using drawing. As shown in FIG.1 and FIG.2, the ship 1 which concerns on this embodiment is the engine room 2, the engine 3, the engine casing 4, the chimney 5, and the residential area 6 (FIG. 2) and the exhaust gas cleaning system 7 are mainly included.

  The engine (for example, main engine) 3 is a power source for propelling the ship 1 and is installed in the engine room 2. An engine casing 4 is provided on the upper deck 10 of the ship 1. A chimney 5 is provided on the engine casing 4. A residential area 6 (see FIG. 2) is provided on the bow side of the engine casing 4. An exhaust gas cleaning system 7 is provided on the side of the engine casing 4. The exhaust gas cleaning system 7 is provided on the starboard side of the engine casing 4 in the present embodiment, but may be provided on the stern side or port side of the engine casing 4 (chimney 5). The engine 3 exemplifies the main engine in the present embodiment.For example, an auxiliary engine, an internal combustion engine for a generator, an internal combustion engine for other uses, an external combustion engine such as a main boiler or an auxiliary boiler, etc. Broadly means a machine that converts various energy into mechanical force or motion and generates exhaust gas.

  Inside the chimney 5 is provided an engine exhaust pipe 11 for discharging the exhaust gas of the engine 3 to the outside of the ship. The engine exhaust pipe 11 extends to the upper side of the chimney 5 through the engine room 2, the engine casing 4, and the chimney 5. Inside the chimney 5, an engine damper 12 is provided in the engine exhaust gas pipe 11.

<Exhaust gas cleaning system>
The exhaust gas cleaning system (EGCS) 7 is a device that cleans the exhaust gas discharged from the engine 3 and discharges the exhaust gas after cleaning out of the ship. Further, the exhaust gas cleaning system 7 is an apparatus that discharges washed wastewater to the outside of the ship or neutralizes and reuses the wastewater. The exhaust gas cleaning system 7 includes at least a scrubber main body 21, an exhaust gas inlet pipe 22, a scrubber exhaust gas pipe 23, and a drain pipe 24.

  The scrubber body 21 is a device that cleans the exhaust gas discharged from the engine 3. The scrubber body 21 is installed on the A deck 20 via a support member 25. The scrubber body 21 has a substantially cylindrical shape. The cleaning method of the scrubber body 21 is not particularly limited, but in this embodiment, seawater taken into the ship is sprayed in the scrubber body 21 to clean the exhaust gas, and the particles contained in the exhaust gas are adhered and aggregated. It separates the particles from the exhaust gas. The separated particles are discharged from the drain pipe 24 together with the drainage. The scrubber body 21 of the present embodiment is a device that mainly reduces sulfur oxide (SOx) contained in the exhaust gas, but may be a device that reduces other substances.

  The A deck 20 is a deck located at a higher position than the upper deck 10. The A deck 20 is supported by a plurality of support columns 26 erected on the upper deck 10. As shown in FIG. 2, rooms R <b> 1 and R <b> 2 are provided under the A deck 20. The installation position of the scrubber main body 21 is not limited to the A deck 20, and may be installed on a B deck or C deck higher than the A deck 20. The height from the upper deck 10 to the A deck 20 (the deck on which the scrubber body 21 is installed) is, for example, preferably set to 2.0 m or more, preferably 2.5 m or more, more preferably 3.0 m or more. It is preferable to be 10.0 m or less.

  The A deck 20 is formed with four side walls Wa, Wb, Wc, Wd that cover the periphery of the scrubber body 21 and an upper wall C that covers the upper side. A scrubber chamber S is formed by the A deck 20 constituting the bottom, the four side walls Wa to Wd, and the upper wall C. As shown in FIG. 2, the scrubber chamber S is formed with a space S1 projecting toward the bow side. In the space S1, a control unit V and the like for controlling the scrubber body 21 are arranged.

  The exhaust gas inlet pipe 22 is a pipe that connects the exhaust gas pipe 11 for engine and the scrubber main body 21 so that the exhaust gas can flow. One end of the exhaust gas inlet pipe 22 is connected to an intermediate portion of the engine exhaust gas pipe 11 inside the chimney 5. The other end of the exhaust gas inlet pipe 22 is connected to the lower part of the scrubber body 21. A scrubber damper 27 (see also FIG. 4) is provided at the end of the exhaust gas inlet pipe 22 on the engine exhaust gas pipe 11 side. By opening the engine damper 12 and closing the scrubber damper 27, exhaust gas can be discharged from the engine exhaust pipe 11 to the outside of the ship. On the other hand, exhaust gas can be caused to flow into the scrubber body 21 by closing the engine damper 12 and opening the scrubber damper 27. The engine damper 12 and the scrubber damper 27 can be opened and closed based on a control signal from the control unit V.

  As shown in FIGS. 4 and 5, the exhaust gas inlet pipe 22 is a pipe connecting the engine exhaust gas pipe 11 and the scrubber main body 21 in the chimney 5. The exhaust gas from the engine exhaust pipe 11 is supplied to the scrubber main body 21. Incorporated. The configuration around the exhaust gas inlet pipe 22 will be described in detail later.

  As shown in FIGS. 1 and 2, the scrubber exhaust gas pipe 23 is a cylindrical member that discharges the exhaust gas after being cleaned by the scrubber body 21 to the outside of the ship. The base end side of the scrubber exhaust pipe 23 is connected to the scrubber main body 21, and the tip end side extends vertically upward to substantially the same height as the engine exhaust pipe 11. The scrubber exhaust gas pipe 23 passes through the opening of the upper wall C of the scrubber chamber S. The opening is formed with a diameter slightly larger than that of the scrubber exhaust pipe 23. The front end side of the scrubber exhaust gas pipe 23 is supported by a support structure X formed on the upper wall C. The structure of the support structure X may be any structure as long as it can support the front end side of the scrubber exhaust pipe 23, but in this embodiment, it has a truss structure.

  The scrubber exhaust gas pipe 23 may be a single cylindrical member or may connect a plurality of cylindrical members. When connecting a plurality of cylindrical members, an expansion joint, rubber packing, resin packing, or the like may be provided between adjacent cylindrical members to absorb expansion and contraction of the cylindrical members. When connecting a plurality of tubular members, it is preferable that the load of the tubular member above the upper wall C and the load of the support structure X do not act on the scrubber body 21. For example, it is preferable to form so that the load of the cylindrical member above the upper wall C and the load of the support structure X act on the upper wall C without acting on the scrubber main body 21. Detailed configurations of the scrubber exhaust pipe 23 and the support structure X will be described later.

  The drain pipe 24 is a pipe for discharging waste water from the scrubber body 21. As shown in FIG. 3, the drain pipe 24 is connected to the lower end of the scrubber body 21 and extends through the through hole 20 a of the A deck 20 and the through hole 10 a of the upper deck 10 and extends into the hull. Yes. Here, the exhaust gas cleaning system 7 includes an open type that discharges waste water to the outside of the ship, a closed type that cleans and circulates waste water on the ship and reuses it as cleaning water, and a hybrid type that can select both open and closed. There is. The “drain pipe” shown in the claims may include closed and hybrid type circulation pipes. The form of drainage is not particularly limited, but in this embodiment, an open type is exemplified.

  The upper end side of the drain pipe 24 is connected to the lower end of the scrubber body 21, and the lower end side of the drain pipe 24 is connected to the ship bottom. The drain pipe 24 drains by a gravity drainage system that does not use a pump or the like. The waste water discharged from the scrubber body 21 is strongly acidic (PH = about 2.0) and contains many particles contained in the exhaust gas, and the temperature is 25 to 60 ° C.

  As shown in FIG. 3, the drain pipe 24 and the A deck 20 are connected using an A deck doubling plate 51. The A-deck doubling plate 51 is a metal plate-like member having a through hole 52 through which the drain pipe 24 can be inserted. Corners of the A deck doubling plate 51 and the drain pipe 24 are joined in a watertight manner by welding to form a welded portion Q1. Further, the corners of the A-deck doubling plate 51 and the A-deck 20 are joined in a water-tight manner by welding to form a welded portion Q2. A deck connecting portion 53 is formed by the A deck doubling plate 51 and the welded portions Q1 and Q2. Note that the deck connection portion 53 is not limited to welding, and may be in any other form as long as the A deck 20 and the drain pipe 24 can be connected in a watertight manner.

  The drain pipe 24 and the upper deck 10 are connected using an upper deck doubling plate 54. The upper deck doubling plate 54 is a metal plate-like member having a through hole 55 through which the drain pipe 24 can be inserted. The corners of the upper deck doubling plate 54 and the drain pipe 24 are joined in a watertight manner by welding to form a welded portion Q3. Further, the corners of the upper deck doubling plate 54 and the upper deck 10 are joined in a watertight manner by welding to form a welded portion Q4. The upper deck connecting portion 56 is formed by the upper deck doubling plate 54 and the welded portions Q3 and Q4. The upper deck connecting portion 56 is not limited to welding, and may be in other forms as long as the upper deck 10 and the drain pipe 24 can be connected in a watertight manner.

  An expansion joint 57 is provided on the drain pipe 24 between the deck connection portion 53 and the upper deck connection portion 56. The expansion joint 57 is a member that absorbs expansion and contraction of the drain pipe 24. The material of the expansion joint 57 is not particularly limited as long as it can absorb expansion and contraction. For example, Inconel (registered trademark), super duplex stainless steel, duplex stainless steel, stainless steel, or Hastelloy (registered trademark) is preferable. According to such a material, corrosion can be prevented. The “drain pipe” recited in the claims can also include a drain pipe for a recirculation line.

<Ventilation mechanism in scrubber chamber S>
As shown in FIGS. 6 and 7, a ventilation mechanism is provided inside the scrubber chamber S. The ventilation mechanism mainly includes an air supply opening 61, an exhaust opening 62, a blower F, and a pipe 63. The air supply opening 61 is an opening formed in the upper part of the starboard side wall Wb. The exhaust opening 62 is an opening formed in the upper part of the stern side wall Wd.

  The blower F is disposed on the bottom side of the scrubber chamber S, that is, in the vicinity of the A deck 20. The blower F may be singular or plural. The pipe 63 connects the blowers F and F and the exhaust opening 62. The ventilation mechanism takes in outside air from the air supply opening 61 and sucks the air in the scrubber chamber S with the blower F, and discharges it to the outside of the scrubber chamber S through the pipe 63 and the exhaust opening 62. . The supply opening 61 and the exhaust opening 62 may be provided at other positions in the scrubber chamber S. The blower F may be disposed on the A deck 20. The blower F may be installed outside the scrubber chamber S so as to blow air into the scrubber chamber S.

<Operational effects of this embodiment>
Here, since the drainage discharged from the scrubber body 21 is a gravity drainage system, a straight drain pipe 24 having a predetermined length or more must be provided vertically downward from the scrubber body 21. For example, when a ship body structure such as an oil tank (not shown) or piping is disposed on the back side of the upper deck 10, if the scrubber body 21 is installed directly above the upper deck 10, the drain pipe 24 and the ship structure Since the object interferes, it is difficult to secure the installation position. However, according to the ship 1 according to the present embodiment, the scrubber main body 21 is provided on the A deck 20 located higher than the upper deck 10, so that there is little interference with the ship body structure, and the lower end of the scrubber main body 21. Therefore, the drain pipe 24 having a linear predetermined length or more can be easily provided.

  Further, by providing the scrubber main body 21 on the A deck 20, it is possible to avoid interference with a structure installed on the upper deck 10 and to reduce spatial restrictions. Moreover, the number of outfitting can be reduced by providing the scrubber body 21 and the scrubber chamber S not on the upper deck 10 but on the A deck 20. Compared with the case where the scrubber body 21 is installed on the upper deck 10 and the reinforcement work is directly applied to the upper deck 10, the work is performed by installing the scrubber body 21 on the A deck 20 and performing the reinforcement work on the A deck 20. It can be done easily. For example, it can be reinforced by increasing the number of columns 26 supporting the A deck 20 or increasing the strength of the columns 26 themselves. In addition, by providing the scrubber chamber S, the scrubber body 21 can be protected from wind and rain, seawater, and the like, and exhaust gas leaking from the scrubber body 21 and the like can be prevented from flowing out to the exposed portion.

  Further, by providing the upper deck connecting portion 56 and the deck connecting portion 53, it is possible to prevent water leaking from the upper deck 10 or the A deck 20 to the drain pipe 24. Further, in this embodiment, the drain pipe 24 is fixed by the upper deck connecting portion 56 and the deck connecting portion 53, and therefore, the drain pipe 24 is formed between the upper deck 10 and the A deck 20 in particular. The drain tube 24 is easily affected by vibration, vibration, and heat of the drain tube 24, and the drain tube 24 is likely to be damaged. However, according to the present embodiment, expansion and contraction of the drain pipe 24 due to the influence of the vibration, vibration, and heat of the drain pipe 24 can be absorbed by the expansion joint 57. Thereby, damage to the drain pipe 24 can be prevented.

  Moreover, according to the ventilation mechanism of this embodiment provided in the scrubber chamber S, the inside of the scrubber chamber S can be ventilated. That is, the exhaust gas may leak from the exhaust gas cleaning system 7, but according to the ventilation mechanism, the exhaust gas can always be discharged outside the scrubber chamber S. As a result, maintenance work or the like in the scrubber chamber S can be performed in a state where the exhaust gas concentration is low.

  The blower F may be installed outside the scrubber chamber S to serve as an air supply sending machine. However, in the case of the air supply blower, noise is increased and the air flow in the scrubber chamber S is difficult to control and the exhaust efficiency may be poor. In this regard, in this embodiment, noise can be prevented by arranging the blower F inside the scrubber chamber S. Further, by installing the blower F on the bottom side (A deck 20 side) in the scrubber chamber S, negative pressure is generated inside the scrubber chamber S (particularly on the bottom side) and stays at the bottom of the scrubber chamber S. Easy exhaust gas can be efficiently discharged to the outside. Further, although the pipe 63 may be omitted, the exhaust gas can be discharged to the outside more efficiently by providing the pipe 63.

  Further, by providing the exhaust opening 62 in the upper part of the scrubber chamber S, the exhaust opening 62 can be sufficiently separated from the traffic path through which the person on the upper deck 10 or the A deck 20 passes. Further, the air supply opening 61 and the exhaust opening 62 are provided in the upper part of the scrubber chamber S, and the exhaust fan F is provided on the bottom side of the scrubber chamber S. Air can be circulated in the height direction. Thereby, it is possible to efficiently prevent the exhaust gas from staying inside the scrubber chamber S. That is, the air flow in the scrubber chamber S can be easily controlled by using the blower F as an exhaust blower and setting the supply openings 61 and the exhaust openings 62 together.

  Further, as shown in FIG. 7, on the port side of the scrubber chamber S, engine air-conditioning air supply ports 66 for taking in outside air used for air-conditioning of the engine room 2 are provided at a plurality of locations. In the present embodiment, the exhaust opening 62 is provided at a position away from the engine air-conditioning air supply port 66 in the side wall Wd. Thereby, it is possible to make it difficult for the exhaust gas discharged from the scrubber chamber S to flow to the engine air conditioning supply port 66 side.

<Configuration around the exhaust gas inlet pipe 22>
≪Chimney side opening structure N1≫
Next, the configuration around the exhaust gas inlet pipe 22 will be described mainly with reference to FIGS. 4 and 5. As shown in FIGS. 4 and 5, the exhaust gas inlet pipe 22 mainly includes a branch pipe 31, a horizontal pipe 32, an elbow pipe 33, and a vertical pipe 34. As shown in FIG. 4, the branch pipe 31 is a pipe that branches from the engine exhaust pipe 11 in the horizontal direction in the chimney 5. A generator exhaust gas pipe 35 is connected to a part of the branch pipe 31. An expansion joint 36 is installed between the branch pipe 31 and the horizontal pipe 32. An expansion joint 37 is installed between the horizontal pipe 32 and the elbow pipe 33. An expansion joint 38 is installed between the elbow pipe 33 and the vertical pipe 34. By providing each expansion joint 36, 37, 38, it is possible to absorb the expansion, contraction caused by the oscillation, vibration or heat received by the exhaust gas inlet pipe 22.

  As shown in FIG. 5, one end side of the horizontal pipe 32 passes through the opening 40 of the chimney 5. The horizontal pipe 32 is disposed horizontally from the chimney 5 toward the scrubber chamber S. The outer diameter of the horizontal tube 32 is increased from the middle portion. The opening 40 has a diameter that is slightly larger than that of the horizontal pipe 32. A cylindrical sleeve 41 is provided in the opening 40. The sleeve 41 extends over the inside and outside of the chimney 5 with the opening 40 interposed therebetween. The opening 40 and the sleeve 41 are joined by welding. The sleeve 41 has a waterproof function and a heat insulating function.

  Outside the chimney 5 side, a bevel 42 is formed on the outer periphery of the horizontal pipe 32 in the circumferential direction. The bevel portion 42 includes a rising portion 42a that is vertically provided from the outer periphery of the horizontal pipe 32 and extends in the circumferential direction, and an extending portion 42b that is extended vertically from the end portion of the rising portion 42a to the chimney 5 direction. It is configured.

  A combing 43 is formed on the inner surface of the extending portion 42b so as to hang down to the horizontal pipe 32 side. The combing 43 is formed intermittently at intervals along the circumferential direction of the horizontal pipe 32. The combing 43 and the end portion of the sleeve 41 are in contact with each other or are slightly separated from each other. Further, the lower part of the horizontal pipe 32 is supported by a support M <b> 1 rising from the engine casing 4 outside the chimney 5.

  The chimney side opening structure N1 is configured by the opening 40 of the chimney 5, the sleeve 41, the bulk part 42, and the combing 43. According to the chimney side opening structure N1, by providing the sleeve 41 in the opening 40, it is possible to prevent wind and rain from flowing into the chimney 5. Further, by providing the sleeve 41, it is possible to prevent the heat in the chimney 5 and the heat of the exhaust gas inlet pipe 22 from being transmitted to the surface of the chimney 5. Thereby, it can prevent that the coating of the outer wall of the chimney 5 or the scrubber chamber S is peeled off or soiled by heat. Further, the air in the chimney 5 (exhaust gas leaking from the engine exhaust gas pipe 11 or the like) is discharged out of the ship through the horizontal pipe 32 and the sleeve 41 and between the adjacent combing 43 and 43. It has become. In addition, since the opening edge of the opening 40 of the chimney 5 and the horizontal pipe 32 are cut off, the influence of the horizontal pipe 32 (exhaust gas intake pipe 22) on the horizontal pipe 32 (exhaust gas inlet pipe 22), expansion and contraction due to vibration and heat is exerted on the chimney 5. Do not communicate. That is, the exhaust gas inlet pipe 22 penetrates the opening 40 and can expand and contract in the radial direction and the axial direction also around the opening 40, so that damage to the chimney 5 and the exhaust gas inlet pipe 22 can be prevented.

≪Scrubber side opening structure N2≫
As shown in FIG. 5, the other end of the horizontal pipe 32 passes through an opening 60 formed in the side wall Wa on the port side of the scrubber chamber S. The opening 60 has a diameter that is slightly larger than the outer diameter of the horizontal tube 32. A cylindrical sleeve 44 is provided in the opening 60. The sleeve 44 extends from the vicinity of the opening 60 toward the chimney 5 side. The sleeve 44 and the side wall Wa are joined by welding. The sleeve 44 has a waterproof function and a heat insulating function.

  On the outer periphery of the horizontal pipe 32 in the vicinity of the scrubber chamber S, a bevel portion 45 is formed in the circumferential direction. The bevel portion 45 includes a rising portion 45a that extends vertically from the outer periphery of the horizontal tube 32 in the circumferential direction, and an extending portion 45b that extends from the end of the rising portion 45a toward the side wall Wb. It is configured.

  A combing 46 is formed on the inner surface of the extending portion 45b so as to hang down to the horizontal pipe 32 side. The combing 46 is formed intermittently at intervals along the circumferential direction of the horizontal pipe 32. The combing 46 and the end of the sleeve 44 abut or are slightly spaced apart. As shown in FIG. 4, the lower part of the horizontal pipe 32 is supported by a support M2 extending from the inner surface of the side wall Wa.

  The opening portion 60 of the side wall Wa, the sleeve 44, the bevel portion 45, and the combing 46 constitute a scrubber side opening structure N2. According to the scrubber side opening structure N <b> 2, it is possible to prevent wind and rain from flowing into the scrubber chamber S by providing the sleeve 44 in the opening 60. Further, the air in the scrubber chamber S (exhaust gas leaked from the scrubber main body 21 and the like) is discharged out of the ship through the opening 60, between the horizontal pipe 32 and the sleeve 44, and between the adjacent combing 46, 46. It has become so. Further, since the opening edge of the opening 60 of the side wall Wa and the exhaust gas inlet pipe 22 are cut off, the influence of the horizontal pipe 32 (exhaust gas inlet pipe 22) that the horizontal pipe 32 (exhaust gas inlet pipe 22) undergoes expansion and contraction due to vibration and heat is affected. Is not communicated to. That is, since the exhaust gas inlet pipe 22 penetrates the opening 60 and can expand and contract in the radial direction and the axial direction also around the opening 60, the side wall Wa of the scrubber chamber S and the exhaust gas inlet pipe 22 are prevented from being damaged. Can do.

  As shown in FIG. 4, the elbow pipe 33 is connected to the horizontal pipe 32 via an expansion joint 37. The elbow pipe 33 is connected to the vertical pipe 34 through an expansion joint 38. The elbow pipe 33 is a pipe that guides the exhaust gas flowing from the horizontal pipe 32 substantially vertically downward. The elbow pipe 33 is suspended by supports M3 and M4 extending from the upper wall C of the scrubber chamber S. Inside the elbow tube 33, a plate-shaped guide 48 arranged along the tube axis direction is provided. By providing the guide 48, the turbulent flow in the bent elbow pipe 33 can be prevented, and the exhaust gas can be efficiently circulated to the scrubber body 21 side.

<Connection structure of scrubber body 21 and scrubber exhaust pipe 23>
Next, the connection structure of the scrubber body 21 and the scrubber exhaust pipe 23 will be described mainly with reference to FIGS.
The ship 1 includes flange portions 201 and 202, a seal member 203, a plurality of sets of nuts 204, bolts 205, and a compression coil spring 206 as a connection structure for the scrubber main body 21 and the scrubber exhaust pipe 23.

<< Flange parts 201 and 202 and seal member 203 >>
The flange portion 201 is formed to have an annular shape in plan view at the periphery of the hole of the upper wall portion of the housing portion of the scrubber body 21. The flange portion 201 may be provided by attaching a member having the flange portion 201 to the housing portion of the scrubber main body 21. The flange portion 202 is formed at the lower end portion of the scrubber exhaust gas pipe 23 so as to have an annular shape in a plan view like the flange portion 201. The flange portion 202 may be provided by attaching a member having the flange portion 202 to the lower end portion of the scrubber exhaust gas pipe 23. The seal member 203 is a member having an annular shape in a plan view like the flange portions 201 and 202, and is provided so as to be sandwiched between the flange portions 201 and 202. The seal member 203 is made of resin or rubber and has elasticity.

≪Nut 204, bolt 205 and compression coil spring 206≫
The nut 204 is joined to the lower surface portion of the flange portion 201 by welding or the like. The bolt 205 is inserted from above into holes formed in the flange portions 201 and 202 and the seal member 203, and is screwed into the nut 204. The compression coil spring 206 is inserted between the head portion 205 b of the bolt 205 and the upper surface of the flange portion 202 through the shaft portion 205 a of the bolt 205, and biases the flange portion 202 toward the flange portion 201. That is, the compression coil spring 206 is an example of an urging portion that urges one of the scrubber exhaust pipe 23 and the scrubber main body 21 to the other.

<Support structure of scrubber exhaust gas pipe 23>
Next, the support structure of the scrubber exhaust gas pipe 23 will be described mainly with reference to FIGS. In the ship 1, the scrubber exhaust pipe 23 includes a lower exhaust pipe 211, an upper exhaust pipe 212, and a connection portion 213.

≪Lower exhaust pipe 211≫
The lower exhaust pipe 211 is a cylindrical member that forms the lower part of the scrubber exhaust pipe 23.
The lower end portion of the lower exhaust pipe 211 is connected to the casing portion of the scrubber body 21 via the seal member 203 as described above. The upper end portion of the lower exhaust pipe 211 protrudes upward from the upper wall C of the scrubber chamber S in a state where the lower exhaust pipe 211 is connected to the casing of the scrubber body 21.

≪Upper exhaust pipe 212≫
The upper exhaust pipe 212 is a cylindrical member that forms the upper part of the scrubber exhaust pipe 23. The lower end portion of the upper exhaust gas pipe 212 is positioned above the lower end portion of the support structure X in a state where the upper exhaust gas pipe 212 is supported by the support structure X via a support portion 220 described later. An upper end portion of the upper exhaust gas pipe 212 protrudes upward from the support structure X in a state where the upper exhaust gas pipe 212 is supported by the support structure X via a support portion 220 described later.

<< Connection part 213 >>
The connection part 213 is a part that connects the upper end part of the lower exhaust pipe 211 and the lower end part of the upper exhaust pipe 212. In this embodiment, the connection part 213 is formed using a pair of half sleeves formed of the same material as the lower exhaust pipe 211 and the upper exhaust pipe 212. The connection part 213 is joined to the lower exhaust pipe 211 and the upper exhaust pipe 212 by welding or the like. In addition, the structure of the connection part 213 is not limited to the above-mentioned thing, What connects the lower exhaust pipe 211 and the upper exhaust pipe 212 in the state in which the load of the upper exhaust pipe 212 was supported by the support structure X. That's fine.

≪Support part≫
The ship 1 includes the above-described support structure X and the support portion 220 as a support structure for the scrubber exhaust pipe 23. The support portion 220 is a portion that supports the load of the upper exhaust gas pipe 212 so as to transmit the load to the support structure X, and in this embodiment, includes a plurality of exhaust gas pipe side members 221 and a support structure side member 222 (see FIG. 11).

  As shown in FIG. 12, the exhaust gas pipe side member 221 includes a rectangular frame portion 221a that has a closed cross-sectional shape in a front view, and a partition wall portion 221b that connects an upper wall portion and a lower wall portion of the rectangular frame portion 221a. It is a metal member provided integrally. The base end portion of the exhaust gas pipe side member 221 is joined to the outer peripheral surface of the upper exhaust gas pipe 212 by welding or the like.

  As shown in FIGS. 10 and 11, in the present embodiment, four exhaust pipe side members 221 are arranged in the circumferential direction of the upper exhaust pipe 212 at a height corresponding to the intermediate portion in the height direction of the support structure X. It is installed at equal intervals (every 90 °). In addition, at the height corresponding to the upper end portion of the support structure X, four exhaust gas pipe side members 221 are installed at equal intervals (every 90 °) in the circumferential direction of the upper exhaust gas pipe 212.

  As shown in FIG. 12, the support structure side member 222 is provided corresponding to the exhaust gas pipe side member 221, and is a vertical wall portion 222 a and a pair extending vertically from the upper and lower ends of the vertical wall portion 222 a. And a flange member 222b. The base end portion of the support structure side member 222 is joined to the support structure X by welding or the like.

  As shown in FIG. 13, the partition wall 221b of the exhaust gas pipe side member 221 is formed with a vertically long hole 221c in the vertical direction. Further, on the scrubber exhaust gas pipe 23 or upper exhaust gas pipe 212 side of the vertical wall portion 222a of the support structure side member 222, a vertically long hole portion 222c is formed in the vertical direction similar to the hole portion 221c. The exhaust gas pipe side member 221 and the support structure side member 222 are connected to each other by a bolt 223 and a nut 224 via holes 221c and 222c. In this way, the upper exhaust gas pipe 212 is supported so as to be displaceable in the vertical direction with respect to the support structure X. That is, the upper exhaust gas pipe 212 is supported by the support structure X by the support part 220 so as to allow thermal expansion and contraction of the upper exhaust gas pipe 212 in the vertical direction. Moreover, according to this structure, the dimensional error of the support structure X, the upper exhaust pipe 212, etc. at the time of installation can be absorbed. Note that the structure that allows thermal expansion and contraction is not limited to the above-described structure, and one of the holes 221c and 222c is vertically long in the vertical direction, and the other is substantially the same diameter as the shaft portion of the bolt 223. May be.

  At least one of the support part 220 and the support structure X is preferably formed of a material different from the scrubber exhaust pipe 23 and can be electrically insulated from the scrubber exhaust pipe 23.

<Assembly method of scrubber exhaust pipe 23>
Next, each step of the method of assembling the scrubber exhaust pipe 23 will be described with reference mainly to FIG. First, the lower exhaust pipe 211 is connected to the casing of the scrubber main body 21 via the seal member 203 (see FIG. 8). Subsequently, the upper exhaust pipe 212 is connected to the support structure X via the support portion 220 on the ship 1 or outside the ship 1. Subsequently, the support structure X to which the upper exhaust pipe 212 is connected is installed on the upper wall C of the scrubber chamber S. Subsequently, the lower exhaust pipe 211 and the upper exhaust pipe 212 are connected by the connection portion 213.

  Before installing the support structure X on the upper wall C of the scrubber chamber S, the lower end of the support structure X is shaved so that the upper end and the upper part of the lower exhaust pipe 211 after the support structure X is installed. You may adjust the clearance gap with the lower end part of the exhaust gas pipe 212. FIG.

As shown in FIG. 13, in the initial state in which the scrubber exhaust pipe 23 is assembled to the scrubber body 21, the bolt 223 and the nut 224 are located on the upper end side of the holes 221c and 222c. Accordingly, when the lower exhaust pipe 211 and the upper exhaust pipe 212 are thermally expanded upward, the hole 221c is moved upward with respect to the bolt 223 and the nut 224, and the upper exhaust pipe 212 corresponding to the thermal expansion. Can be suitably supported.
Further, in the upper and lower support portions 220, it is preferable that the holes 221 c and 222 c in the upper support portion 220 are formed longer than the holes 221 c and 222 c in the lower support portion 220. Thereby, it can respond suitably with respect to the thermal expansion and contraction of the upper exhaust gas pipe 212.

<Operational effects of this embodiment>
According to the ship 1 according to the embodiment of the present invention, since the scrubber body 21 is accommodated in the scrubber chamber S, the scrubber body 21 can be suitably protected from wind and rain and seawater. The scrubber exhaust gas pipe 23 is divided into a lower exhaust gas pipe 211 and an upper exhaust gas pipe 212, and the load of the upper exhaust gas pipe 212 is supported by the support structure X on the scrubber chamber S. Therefore, it is not necessary for the scrubber main body 21 to support the load of the upper exhaust gas pipe 212, and the load acting on the scrubber main body 21 can be reduced to improve the durability and design flexibility of the scrubber main body 21.

  Moreover, according to the ship 1 which concerns on embodiment of this invention, since the support structure X exhibits the truss structure with a clearance gap, while connecting the upper exhaust pipe 212 by the support part 220 is facilitated, height adjustment is carried out. Can be facilitated.

  Moreover, according to the ship 1 which concerns on embodiment of this invention, since the upper exhaust gas pipe 212 is supported by the support structure X so that heat expansion and contraction is possible to the up-down direction, the support structure X by the thermal expansion and contraction of the upper exhaust gas pipe 212 is supported. And the influence on the scrubber chamber S can be suppressed.

  Moreover, in the conventional ship, since exhaust gas was very high temperature, the metal member (for example, expansion joint) was used for the connection part of the scrubber main body and the exhaust pipe for scrubbers. On the other hand, according to the ship 1 according to the embodiment of the present invention, water (seawater or the like) is sprayed on the exhaust gas in the scrubber main body 21, so the temperature of the exhaust gas flowing through the scrubber exhaust pipe 23 is reduced. Yes. Therefore, the connection between the scrubber main body 21 and the scrubber exhaust gas pipe 23 that can be suitably adapted to thermal expansion and contraction without corrosion by using a resin or rubber seal member 203 without using a metal expansion joint. The structure can be provided at low cost.

  Moreover, according to the ship 1 which concerns on embodiment of this invention, even when the sealing member 203 expands and contracts by the influence by the thermal expansion of the scrubber main body 21 and the exhaust gas pipe | tube 23 for scrubbers, with the compression coil spring 206 which is an urging | biasing part, The loosening of the connection part of the scrubber main body 21 and the scrubber exhaust gas pipe 23 can be suitably prevented.

  Although the embodiments of the present invention have been described in detail above, design changes can be made as appropriate without departing from the spirit of the present invention.

1 Ship 2 Engine room 3 Engine (main engine)
4 Engine casing 5 Chimney 6 Living area 7 Exhaust gas cleaning system (EGCS)
DESCRIPTION OF SYMBOLS 10 Upper deck 11 Engine exhaust gas pipe 20 A deck 21 Scrubber main body 22 Exhaust gas intake pipe 23 Scrubber exhaust gas pipe 24 Drain pipe 25 Support member 26 Prop 53 Deck connection part 56 Upper deck connection part 57 Expansion joint 203 Seal member 211 Lower part Exhaust gas pipe 212 Upper exhaust gas pipe 213 Connection part C Upper wall S Scrubber chamber X Support structure Wa side wall Wb side wall Wc side wall Wd side wall

Claims (2)

An exhaust gas pipe for an engine that discharges exhaust gas discharged from the engine to the outside of the ship;
An exhaust gas cleaning system for taking in and cleaning the exhaust gas and discharging the exhaust gas after cleaning to the outside of the ship,
The exhaust gas cleaning system includes:
A scrubber main body for cleaning exhaust gas discharged from the engine by using water, an exhaust gas inlet pipe connecting the exhaust gas pipe for engine and the scrubber main body, and an exhaust gas for scrubber for discharging the cleaned exhaust gas to the outside of the ship A ship comprising: a pipe, and a resin or rubber sealing member provided between the scrubber body and the scrubber exhaust pipe. The marine vessel according to claim 1, further comprising an urging portion that urges one of the scrubber main body and the exhaust gas pipe for the scrubber to the other.

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