A method of cleaning the engine room of a fuel ship and an arrangement thereof

Abstract

The application relates to a clean fuel ship engine room and a layout method thereof, which comprises a diesel engine, a propelling system, a chimney, a liquid tank, a rudder, the diesel engine is placed on the bottom of the main hull, the diesel engine is connected with the liquid tank through an air inlet, the propelling system comprises a propelling shaft and a propeller, one end of the propelling shaft is connected with the diesel engine, the other end of the propelling shaft is connected with the propeller, the chimney extends from an exhaust port of the diesel engine to a double-bottom hold and is communicated with the double-bottom hold, the liquid tank is H-shaped and is divided into a main liquid tank and a connecting liquid tank, the main liquid tank is symmetrically distributed on both sides of the main hull and is arranged around the engine room, the connecting liquid tank is distributed above the propelling shaft, the rudder is arranged above the main deck and is located on the bow end bulkhead at the tail. The ship engine room and the layout method thereof solve the problems of numerous engine room equipment and disordered layout, greatly reduce the main dimension of the ship body, reduce the manufacturing cost and fuel consumption during navigation operation.

Description

TECHNICAL FIELD

[0001] The present application relates to a clean fuel ship engine room and its arrangement method, belonging to the technical field of ship and ocean engineering. BACKGROUND

[0002] In order to match the arrangement of various systems, the existing ship usually sets more empty cabins at the tail, which leads to the waste of the compact main hull arrangement space, and further affects the main dimension of the main hull, the manufacturing cost and the fuel consumption.

[0003] In addition, in order to be normally used, the existing ship engine room needs to be configured with a cooling system and an air supply system, which not only configures a large number of systems, but also occupies a large space in addition to ensuring the temperature of the engine room cabin.

[0004] In summary, the existing engine room has many devices and is arranged in disorder, which greatly increases the main dimension of the ship body, increases the manufacturing cost and the fuel consumption during navigation operation. SUMMARY

[0005] The present application provides a clean fuel ship engine room and its arrangement method, which is used to solve the problem of many devices and disorderly arrangement of the engine room, reduce the main dimension of the ship body, reduce the manufacturing cost and the fuel consumption during navigation operation.

[0006] In order to achieve the above-mentioned purpose, the technical scheme of the present application is as follows: a clean fuel ship engine room, comprising a diesel engine, a propulsion system, a smokestack, a liquid tank and a rudder, the diesel engine is placed on the inner bottom of the main hull, the diesel engine is connected with the liquid tank through an air inlet, the propulsion system comprises a propulsion shaft and a propeller, one end of the propulsion shaft is connected with the diesel engine, and the other end of the propulsion shaft is connected with the propeller, the smokestack extends from the exhaust port of the diesel engine to the double-bottom cabin and communicates with the double-bottom cabin, the liquid tank is H-shaped and is divided into a main liquid tank and a connecting liquid tank, the main liquid tank is symmetrically distributed on both sides of the main hull and is arranged around the engine room, and the connecting liquid tank is distributed above the propulsion shaft, the rudder is arranged above the main deck and is located on the bow bulkhead at the tail of the engine room.

[0007] Further, the length direction of the diesel engine is along the longitudinal direction of the main hull, and each cylinder of the diesel engine is provided with an air inlet, the air inlets are supplied with liquid clean fuel through a total opening connected with the liquid tank, the air inlets are made of heat insulation material and are fireproof and high temperature resistant.

[0008] Further, one end of the chimney pipe is connected to the exhaust gas total outlet of the diesel engine, and the other end is connected to the bilge water tank of the double bottom, the bilge water tank is divided into two parts, one part is located at the bottom of the engine room, and the other part is located at the bottom of the connecting liquid tank cabin, the bilge water tank at the bottom of the engine room is used for purification of fuel tail gas, and the bilge water tank connected to the bottom of the liquid tank is used for cooling of fuel tail gas, the other end of the chimney extends into the bilge water inside the bilge water tank, and can ensure that the flue gas is normally discharged, the partition wall of the two parts of the bilge water tank has a large opening, which is sufficient to make the flue gas pass through completely, the flue gas enters the empty cabin at the tail after passing through the bilge water tank and is discharged from the main hull, the empty cabin at the tail has a large opening at the bow wall and the stern wall, the edge distance of the large opening from the edge of the cabin wall is not more than 1.5 meters and not less than 0.5 meters, and the opening size of the stern wall of the empty cabin is larger than that of the bow wall of the empty cabin.

[0009] Further, the main liquid tank is arranged at a distance of not less than 400 mm from the main hull structure, the cross section of the main liquid tank is square, and the liquid tank has a large circular arc near the bilge area of the hull, and the liquid tank stores liquid clean fuel.

[0010] Further, the engine room adopts an open ceiling and is connected to the main hull through a support column, the open ceiling is fully closed in the direction of the life tower and the overlapping area, and is fully open in other directions, the open ceiling is made of flexible material, and the bow part overlaps the rudder.

[0011] Further, the rudder is made of light material, the rudder has a rotating shaft at the center, the rudder rotates around the rotating shaft, the rotating shaft is arranged on the bow cabin wall at the stern, the rudder has an air duct inside, the air duct has a large opening on one side along the wind direction and a small opening on the side along the engine room of the main hull, and the small opening position of the rudder is located inside the opening area of the main deck of the engine room.

[0012] Further, the engine room further comprises an engine cabin, a liquid tank cabin, a ballast tank, a bilge water tank, an empty cabin, a propulsion cabin and a life tower control cabin, the life tower control cabin is arranged on the upper part of the main deck of the main hull, the engine cabin and the liquid tank cabin are arranged between the main deck and the inner bottom of the main hull, and the ballast tank and the bilge water tank are arranged below the inner bottom of the main hull; the engine cabin and the propulsion cabin are arranged in the middle of the ship, the propulsion cabin is in an open form, the liquid tank cabin is arranged on both sides of the engine cabin and the propulsion cabin and extends to the entire tail area.

[0013] Further, the height of the bilge water tank is not less than 1.5 meters, and the bilge water tank is arranged in the middle of the ship, and the ballast water tank is arranged on both sides of the bilge water tank; the empty cabin is located between the life tower and the propulsion cabin, and large openings are arranged in the bow direction and the stern direction of the cabin.

[0014] A method for arranging an engine room of a clean fuel ship, the specific steps are:

[0015] S1: according to the ship speed requirement to select diesel engine model and propeller size, and according to the diesel engine to arrange the engine cabin, according to the propeller size to arrange the propulsion cabin;

[0016] S2: according to the engine cabin to connect the liquid tank size, according to the navigation endurance to determine the main liquid tank volume;

[0017] S3: according to the propulsion cabin, connecting liquid tank and engine cabin to determine the main liquid tank length, and then determine the main liquid tank width and depth;

[0018] S4: according to the engine room width and the main liquid tank width to determine the main ship body engine room area type width;

[0019] S5: according to the main liquid tank depth to determine the main ship body engine room area type depth.

[0020] A welding method for cleaning the engine room of the fuel ship, the liquid tank is enclosed in the main ship body, the main ship body is integrally floated and moved to the liquid tank cabin, and then the tail sealing plate is welded, and finally the main deck is welded, the floating and moving adopts the dock water injection, the liquid tank is floated on the water and pulled into the liquid tank cabin, then the dock is drained, and then the tail sealing plate and the main deck welding operation is completed.

[0021] The beneficial effects of the present application are:

[0022] Compared with the prior art, the engine room of the ship and the arrangement method thereof solve the problems of numerous engine room equipment and chaotic arrangement, greatly reduce the main dimension of the ship body, reduce the manufacturing cost and fuel consumption during navigation operation. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic diagram for engine room equipment arrangement (midship section);

[0024] Figure 2 It is a schematic diagram for cabin arrangement (side view);

[0025] Figure 3 It is a general arrangement plan;

[0026] Figure 4 It is a tail sealing plate schematic diagram;

[0027] In the figure: 1 is a living building, 2 is an engine room, 3 is a cargo oil tank, 4 is a grey water tank, 5 is a ballast tank, 6 is an empty tank, 7 is a rudder, 8 is a propulsion cabin, 21 is a diesel engine, 22 is a liquid tank, 23 is a chimney, 24 is a propulsion shaft, 25 is an air inlet pipe, 26 is a ceiling, 71 is an air duct opening, 72 is a rudder, and 73 is a rotating shaft. DETAILED DESCRIPTION

[0028] The application will be further described in connection with the drawings and embodiments.

[0029] As Figures 1 to 3 shown, the engine room of the clean fuel ship according to the embodiment of the application comprises an engine room 2, a liquid tank cabin, a ballast cabin 5, a grey water cabin 4, an empty cabin 6, a propulsion cabin 8, a living cabin control cabin, a diesel engine 21, a propulsion system, a chimney 23, a liquid tank 22, a rudder 72.

[0030] The diesel engine 21 is arranged on the inner bottom of the main hull, and the diesel engine 21 is connected with the liquid tank 22 through an air inlet. The propulsion system comprises a propulsion shaft 24 and a propeller, one end of the propulsion shaft 24 is connected with the diesel engine 21, and the other end of the propulsion shaft 24 is connected with the propeller. The chimney 23 extends from the exhaust port of the engine to the double-bottom cabin and is communicated with the double-bottom cabin. The liquid tank 22 is in H shape and is divided into main liquid tanks and connecting liquid tanks. The main liquid tanks are symmetrically arranged on both sides of the main hull and are arranged around the engine room. The connecting liquid tanks are arranged above the propulsion shaft 24. The rudder 72 is arranged above the main deck and is located on the bow end bulkhead of the stern.

[0031] The length direction of the diesel engine 21 is along the longitudinal direction of the main hull, and each cylinder of the diesel engine 21 is provided with an air inlet. The air inlets are branched and supplied with liquid clean fuel through one total opening connected with the liquid tank 22. The air inlets are made of heat insulation material and are fireproof and high-temperature resistant.

[0032] One end of the chimney 23 is connected with the exhaust total outlet of the diesel engine 21, and the other end of the chimney 23 is connected with the grey water cabin 4 of the double-bottom. The grey water cabin 4 is divided into two parts, one part is located at the bottom of the engine room, and the other part is located at the bottom of the connecting liquid tank cabin. The grey water cabin 4 at the bottom of the engine room is used for gas purification, and the grey water cabin 4 at the bottom of the connecting liquid tank is used for gas cooling. The other end of the chimney 23 extends into the grey water inside the grey water cabin 4 and can ensure that the flue gas is normally discharged. The partition bulkhead of the two-part grey water cabin 4 has a large opening, which is sufficient for the flue gas to pass through completely. After the flue gas passes through the grey water cabin, the flue gas enters the empty cabin at the stern and is discharged from the main hull. The empty cabin at the stern has a large opening on the bow end bulkhead and the stern end bulkhead. The distance between the edge of the large opening and the edge of the cabin bulkhead is not more than 1.5 meters and not less than 0.5 meters. The size of the opening on the stern end bulkhead is larger than the size of the opening on the bow end bulkhead. The chimney 23 guides the combustion exhaust gas into the grey water cabin 4 and flows to the free liquid surface 4 under the propeller shaft 24, and then is discharged through the empty cabin 6. The purification and cooling of the exhaust gas are completed by the grey water cabin 4. The top deck of the engine room 2 has a large opening structure.

[0033] The boundary of the main liquid tank is not less than 400 mm away from the structure of the main hull. The cross section of the main liquid tank is square, and a large circular arc is arranged at the bilge position of the hull. The liquid tank stores liquid clean fuel.

[0034] The cabin is provided with an open top 26 connected to the main hull by a support column, the top of the open top 26 and the direction of the connected living tower 1 are fully enclosed areas, and the other directions are fully open areas, the open top is made of flexible material, and the bow is connected to the rudder 72.

[0035] The rudder 72 is made of light material, the rudder 72 has a rotating shaft at the center, the rudder 72 rotates around the rotating shaft 73, the rotating shaft 73 is arranged on the bow end bulkhead of the stern, the rudder 72 has an air duct inside, and the air duct has a large opening on one side along the wind direction and a small opening on the side along the main hull cabin, and the small opening position of the rudder 72 is located inside the opening area of the main deck of the cabin.

[0036] The living tower cabin is arranged on the upper part of the main deck of the main hull, the cabin and the liquid tank cabin are arranged between the main deck and the inner bottom of the main hull, and the ballast tank 5 and the gray water tank 4 are arranged below the inner bottom of the main hull.

[0037] The engine cabin 2 and the propulsion cabin 8 are arranged in the middle of the ship, the propulsion cabin 8 is in an open form, the liquid tank cabin is arranged on both sides of the cabin and the propulsion cabin 8, and extends to the entire stern area.

[0038] The height of the gray water tank 4 is not less than 1.5 meters, and the gray water tank 4 is arranged in the middle of the ship, and the ballast tank 5 is arranged on both sides of the gray water tank.

[0039] The empty cabin 6 is located between the living tower 1 and the propulsion cabin 8, and large openings are arranged in the bow direction and the stern direction of the cabin, which are used for discharging purified tail gas.

[0040] As shown in Figure 4 The liquid tank cross-sectional shape and the opening of the middle empty cabin for discharging exhaust gas.

[0041] The embodiment one of the present application also provides a method for arranging the cabin of a clean fuel ship, and the specific steps are:

[0042] S1: selecting the type of diesel engine and the size of propeller according to the ship speed requirement, arranging the engine cabin according to the diesel engine, and arranging the propulsion cabin according to the size of propeller;

[0043] S2: arranging the connecting liquid tank size according to the engine cabin, and determining the main liquid tank volume according to the sailing endurance;

[0044] S3: determining the main liquid tank length according to the propulsion cabin, the connecting liquid tank and the engine cabin, and then determining the main liquid tank width and depth;

[0045] S4: determining the main hull cabin area type width according to the cabin width and the main liquid tank width;

[0046] S5: determining the main hull cabin area type depth according to the main liquid tank depth.

[0047] The liquid tank is closed in the main hull, the main hull moves the liquid tank as a whole by floating and supporting, then the tail sealing plate is welded, and finally the main deck is welded;

[0048] The floating and supporting moving method adopts the method of dock water injection, the liquid tank is floated on water, and then moved into the liquid tank cabin, then the dock is drained, and finally the welding operation is completed.

[0049] Embodiment two of the present application: according to the method of embodiment one, the method is specifically applied to the engine room arrangement of a certain clean fuel ship, the length of the stern (including the engine room) of the ship is 30m, the ship width is 28m, the full load draft is 6m, and the specific steps are as follows:

[0050] S1: according to the ship speed requirement, the type of diesel engine (main engine power 8000kw*1) and the maximum diameter of the propeller are selected, then the engine cabin is arranged according to the diesel engine, and the propulsion cabin is arranged according to the propeller size;

[0051] S2: according to the engine cabin arrangement, the size of the connecting liquid tank is connected, and according to the navigation endurance, the main liquid tank volume is determined to be 4850m 3 ;

[0052] S3: according to the propulsion cabin, the connecting liquid tank and the engine cabin, the length of the main liquid tank is determined, and then the width and depth of the main liquid tank are determined;

[0053] S4: according to the engine room width and the main liquid tank width, the main hull engine room area type width is determined;

[0054] S5: according to the main liquid tank depth, the main hull engine room area type depth is determined to be 11.2m.

Claims

1. An engine room of a clean fuel ship, comprising a diesel engine, a propulsion system, a chimney, a liquid tank, and a rudder, characterized in that: The diesel engine is placed on the inner bottom of the main hull, and the diesel engine is connected to the liquid tank through the air inlet. The propulsion system includes a propulsion shaft and a propeller. One end of the propulsion shaft is connected to the diesel engine, and the other end is connected to the propeller. The chimney extends from the exhaust port of the diesel engine to the double bottom tank and is connected to the double bottom tank. The liquid tank is H-shaped and is divided into a main liquid tank and a connecting liquid tank. The main liquid tanks are symmetrically distributed on both sides of the main hull and arranged around the engine room. The connecting liquid tanks are distributed above the propulsion shaft. The rudder is arranged above the main deck and is located on the bow bulkhead at the rear of the engine room.

2. The engine room of a clean fuel ship according to claim 1, characterized in that: The length direction of the diesel engine is along the longitudinal direction of the main hull, and each cylinder of the diesel engine is provided with an air inlet, and the air inlet is diverted to supply liquid clean fuel through a main opening connected to the liquid tank. The air inlet is made of heat-insulating material and is fireproof and high-temperature resistant.

3. The engine room of a clean fuel ship according to claim 1, characterized in that: One end of the chimney pipe is connected to the main exhaust outlet of the diesel engine, and the other end is connected to the gray water tank of the double bottom. The gray water tank is divided into two parts, one part is located at the bottom of the engine room, and the other part is located at the bottom of the connecting liquid tank compartment. The gray water tank at the bottom of the engine room is used for purifying the fuel exhaust gas, and the gray water tank at the bottom of the connecting liquid tank is used for cooling the fuel exhaust gas. The other end of the chimney extends to the inside of the gray water in the gray water tank and can ensure the normal discharge of smoke. The dividing bulkhead of the two parts of the gray water tank has a large opening, which is enough to allow the smoke to pass through completely. After passing through the gray water tank, the smoke enters the stern empty compartment and is discharged from the main hull. The stern empty compartment has large openings on the bow end wall and the stern end wall. The edge of the large opening is no more than 1.5 meters away from the edge of the empty compartment bulkhead, and no less than 0.5 meters. The opening size of the stern end wall of the empty compartment is larger than the opening size of the bow end wall of the empty compartment.

4. The engine room of a clean fuel ship according to claim 1, characterized in that: The boundary of the main liquid tank is not less than 400 mm away from the main hull structure. The cross section of the main liquid tank is square, and the tank has a large arc near the bilge area of ​​the hull. The tank stores liquid clean fuel.

5. The engine room of a clean fuel ship according to claim 1, characterized in that: The engine room adopts an open roof and is connected to the main hull through pillars. The top of the open roof and the direction of the overlapping living building are fully enclosed areas, and other directions are fully open areas. The open roof is made of flexible material, and the bow is overlapped on the rudder.

6. The engine room of a clean fuel ship according to claim 1, characterized in that: The rudder is made of lightweight material, and has a rotating shaft at the center of the rudder. The rudder rotates around the rotating shaft, and the rotating shaft is set on the stern bow bulkhead. There is an air duct inside the rudder, and the air duct has a large opening on the side along the wind direction and a small opening on the side along the main hull engine room. The small opening of the rudder is located inside the opening area of ​​the main deck of the engine room.

7. The engine room of a clean fuel ship according to claim 1, characterized in that: It also includes an engine room, a liquid tank tank, a ballast tank, a gray water tank, an empty tank, a propulsion tank, and a living building control cabin. The living building control cabin is arranged on the upper part of the main deck of the main hull, the engine room and the liquid tank tank are arranged between the main deck and the inner bottom of the main hull, and the ballast tank and gray water tank are arranged below the inner bottom of the main hull; the engine room and the propulsion cabin are arranged in the middle of the ship, the propulsion cabin is open, and the liquid tank tank is arranged on both sides of the engine room and the propulsion cabin, and extends to the entire tail area.

8. The engine room of the clean fuel ship according to claim 7, characterized in that: The height of the gray water tank is not less than 1.5 meters, and the gray water tank is arranged in the ship, and ballast water tanks are arranged on both sides of the gray water tank; the empty cabin is located between the living building and the propulsion cabin, and large openings are provided in the bow and stern directions of the cabin.

9. A method for arranging an engine room of a clean fuel ship according to any one of claims 1 to 8, characterized in that: The specific steps are: S1: Select the diesel engine model and propeller size according to the ship's speed requirements, then arrange the engine compartment according to the diesel engine and the propeller compartment according to the propeller size; S2: The size of the connecting tanks is determined according to the engine compartment layout and the main tank volume is determined according to the cruising endurance; S3: Determine the length of the main liquid tank based on the propulsion compartment, the connecting liquid tank, and the engine compartment, and then determine the width and depth of the main liquid tank; S4: Determine the main hull engine room area molded width based on the engine room width and the main liquid tank width; S5: Determine the molded depth of the main hull engine room area based on the depth of the main liquid tank.

10. A welding method for the engine room of a clean fuel ship according to any one of claims 1 to 8, characterized in that: The liquid tank is enclosed in the main hull. The main hull floats the liquid tank as a whole into the liquid tank compartment and then welds the tail plate and finally the main deck. The floating movement adopts the method of filling the dock with water, floating the liquid tank on the water and towing it into the liquid tank compartment, then draining the dock, and then completing the tail plate and main deck welding operations.

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