KR20210022906A - Arrangement of a Ship equipped with a 2-stroke Engine as an Auxiliary Engine - Google Patents

Abstract

Disclosed is an arrangement structure of a ship to which a two-stroke engine is applied as an auxiliary engine. According to the present invention, the arrangement structure of a ship comprises: a main engine provided as a two-stroke engine as an engine for propulsion of the ship and disposed on the floor of the ship; and a generator engine provided as a two-stroke engine as a generator engine for generating power required in the ship and disposed on a 2^nd deck of the ship. The area in which the generator engine is disposed is disposed in the center of the ship in the width direction, and is divided by a bulkhead installed between the port and starboard areas. In the upper 1^st deck of the area where the generator engine is disposed, an opening for accommodating an upper part of the generator engine is formed.

Description

Arrangement of a Ship equipped with a 2-stroke Engine as an Auxiliary Engine

The present invention relates to an arrangement structure of a ship to which a two-stroke engine is applied as an auxiliary engine, and more particularly, by changing the existing equipment arrangement concept and supplementing the responsiveness of the two-stroke engine using a mechanical or electrical method, It relates to the arrangement structure of a ship capable of applying a two-stroke engine as an auxiliary engine.

Typically, a 2-stroke engine is used as the main engine (main engine) in charge of propulsion in the ship field, and a 4-stroke engine is used as an auxiliary engine (auxiliary engine, generator engine, etc.). The use of) has been applied as a generalized rule.

As shown in Fig. 1, a two-stroke engine is known to be more efficient than a four-stroke engine, but since the four-stroke engine has a fast response that can immediately respond to sudden load variations, the ship's power It has been used as a supply device.

However, four-stroke engines have disadvantages in _{CO 2} emissions compared to two-stroke engines due to methane slip and low efficiency. Considering eco-friendliness, even if a DF engine (Dual Fuel Engine) that uses both fuel oil and natural gas as fuel or an engine that uses only natural gas as fuel is applied, a four-stroke engine generates a significant amount of methane slip compared to a two-stroke engine. .

According to the IPCC (Intergovernmental Panel on Climate Change), methane slip has been reported to have a Global Warming Potential (GWP) of about 28 times _{that of CO 2 in 100-year time units and 86 times in 20-year time units.} .

In addition, the IMO (International Maritime Organization) is reviewing and discussing guidelines for methane slip reduction.

_{When a two-stroke engine, which has less CO 2} emissions and higher efficiency than a four-stroke engine, is applied to an auxiliary engine, there is an expected effect of improving fuel consumption and reducing GHG emissions. For example, when the generator engine is replaced from a 4-stroke engine to a 2-stroke engine based on 174K LNGC (LNG Carrier), fuel gas consumption can be saved by about 543 tons per year, and CO ₂ emissions can be reduced by about 4,469 tons per year. have.

Accordingly, the present invention aims to provide a ship capable of applying a two-stroke engine as an auxiliary engine in consideration of a market where interest in environment-friendliness is increasing and international regulations related thereto are strengthened. The concept of equipment placement is to be changed drastically.

In addition, in order to apply the two-stroke engine as an auxiliary engine, the present invention is to supplement the responsiveness of the two-stroke engine by using a mechanical method and an electrical method.

In order to achieve the above object, the present invention is provided as a two-stroke engine as a propulsion engine of a ship, the main engine disposed on the floor of the ship; And a generator engine provided as a two-stroke engine and disposed on the 2nd deck of the ship as a power generation engine for generating power required within the ship, wherein the area in which the generator engine is disposed is located in the center of the width direction of the ship. It is arranged, but is separated and partitioned by a partition wall installed between the port and starboard side areas, and an opening is formed in the upper 1st deck of the area where the generator engine is disposed to accommodate a part of the upper side of the generator engine. It is characterized in that it provides an arrangement structure of the ship.

In the 2nd deck, the port and starboard areas of the area in which the generator engine is disposed are divided into two layers, and the lower layer may be used as a purifier room.

The upper floor of the purifier room, which is disposed on the port side of the area where the generator engine is disposed on the 2nd deck, can be used as an E/R store in which spare parts of the engine room equipment are stored.

In the upper layer of the purifier room disposed on the starboard side of the area in which the generator engine is disposed on the 2nd deck, a nitrogen buffer tank for storing nitrogen supplied to equipment requiring nitrogen purging from the ship, and the nitrogen buffer tank A nitrogen compressor can be installed to compress the nitrogen stored in the container.

In the area in which the generator engine is disposed on the 2nd deck, the structure may be reinforced by installing a pillar (beam) or a plurality of bulkheads supporting a lower portion of the deck.

The 2nd deck on which the generator engine is disposed may be designed to be as low as possible within a possible range when designing the ship.

From the 1st deck to the port side of the area where the opening is formed to accommodate the generator engine, an area in which an integrated IGG/GCU is installed, and an engineer's workshop may be arranged.

The engineer workshop disposed on the 1st deck and the E/R store disposed on the lower 2nd deck of the engineer workshop may be connected to enable mutual movement using an elevator facility.

The integrated IGG/GCU is disposed to be exposed on the Upp deck inside the engine casing in which various pipes for discharging harmful gases from the main engine and the generator engine are installed at the upper end, and on the Upp deck inside the engine casing, the A gas valve unit room that supplies fuel gas to the integrated IGG/GCU can be installed.

On the Upp deck inside the engine casing, an auxiliary boiler may be installed.

The gas valve unit for supplying fuel gas to the generator engine is used by sharing a gas valve unit for supplying fuel gas to the main engine, and may be disposed using a common room.

The gas valve unit room for supplying fuel gas to the generator engine and the main engine may be disposed in a cargo compressor room that processes boil-off gas generated from an LNG storage tank provided in a ship.

One or two generator engines may be installed.

The response of the generator engine by installing a flywheel coupled to the crankshaft of the generator engine or by installing a step-ip gear between the generator engine and the generator driven by the generator engine. Sex can be supplemented.

Alternatively, the generator engine may prevent over-speed by outputting the engine by derating the load applied to the generator engine to be lower than the rated value.

Alternatively, a battery or capacitor may be additionally installed to supplement the power produced by the generator engine.

Another aspect of the present invention for achieving the above object is a ship including a main engine provided as an engine for propulsion of a ship, and a generator engine provided as an engine for power generation for producing power required in the ship, As both the main engine and the generator engine are provided as a two-stroke engine, and the generator engine is provided as a two-stroke engine, an opening for accommodating a part of the upper side of the generator engine is in the upper deck of the area where the generator engine is disposed. And, as the opening is formed, in order to move and arrange the equipment previously disposed in the area in which the opening is formed, the port and starboard areas of the area in which the generator engine is disposed are divided into two layers. It characterized in that it provides an arrangement structure of the ship.

The port and starboard areas of the area where the generator engine is placed are areas previously used as purifier rooms, and the lower layer of the floor divided into two is used as a purifier room as it is, and any one of the port and starboard areas E/R store can be moved to the upper layer of

Equipment related to nitrogen purging may be disposed in the upper layer of the remaining one of the port and starboard areas.

As the E/R store is moved to the corresponding area, the engineer's workshop can be moved to the area where the E/R store was previously placed.

As the engineer's workshop is moved to the area where the E/R store was previously placed, the integrated IGG/GCU-related equipment can be moved to the area where the engineer's workshop was placed.

The area in which the generator engine is disposed and the area on the port side and the starboard side of the area in which the generator engine is disposed may be separated by a partition wall.

As both the main engine and the generator engine are provided as two-stroke engines, the main engine and the generator engine can receive fuel gas of the same specification, and the gas valve unit for supplying fuel gas to the generator engine is the As the gas valve unit for supplying fuel gas to the main engine can be shared and used, the gas valve unit room for a generator engine that was previously installed to supply fuel gas to the generator engine can be deleted.

According to the present invention, it is possible to apply a two-stroke engine as an auxiliary engine of a ship, thereby improving fuel consumption and reducing GHG emissions, thereby providing an eco-friendly ship capable of responding to ship GHG regulations to be strengthened in the future. can do.

In addition, the present invention has the effect of increasing the reliability and availability in the operation of the auxiliary engine by applying a two-stroke engine with good durability and a small number of claims for main parts as an auxiliary engine. There is.

Since the two-stroke engine has a larger active power range than the four-stroke engine, the applied engine set can be reduced. Accordingly, according to the present invention, since the total number of cylinders of the engine is reduced, the management load of the operator can be reduced, and thus maintenance cost can be reduced.

In addition, the present invention can further maximize the above advantages by paralleling a method of applying a PTO such as a shaft generator to a main engine provided as a two-stroke engine.

On the other hand, even if it is an effect not explicitly mentioned herein, it is added that the effect described in the following specification and its provisional effect expected by the technical features of the present invention are treated as described in the specification.

1 is a view comparing the efficiency of a two-stroke DF engine and a four-stroke DF engine.
Figure 2 is a side view showing the arrangement structure of the stern of a conventional ship.
3 is a rear view of FIG. 2.
4 is a 2nd view of a conventional ship It is a drawing showing the arrangement structure of the stern part of the deck.
5 is a view showing the arrangement structure of the stern part of the 1st deck of a conventional ship.
6 is a view showing an arrangement structure of a stern part of a conventional ship's Upp deck.
7 is a configuration diagram of a generator engine provided on a conventional ship.
Figure 8 is a side view showing the arrangement structure of the stern of a ship according to the present invention.
9 is a rear view of FIG. 8.
10 is a 2nd view of a ship according to the present invention It is a drawing showing the arrangement structure of the stern part of the deck.
11 is a view showing the arrangement structure of the stern of the 1st deck of the ship according to the present invention.
12 is a view showing an arrangement structure of a stern of a ship's Upp deck according to the present invention.
13 is a block diagram of a generator engine according to a first embodiment of the present invention.
14 is a block diagram of a generator engine according to a second embodiment of the present invention.
15 is a block diagram of a generator engine according to a third embodiment of the present invention.
16 is a block diagram of a generator engine according to a fourth embodiment of the present invention.
17 is a block diagram of a generator engine according to a fifth embodiment of the present invention.
18 is a view for explaining the position where the BMS or CMS is arranged in the ship according to the present invention, (a) is a side view, (b) is a rear view.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the implementation of the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in detail by describing a preferred embodiment of the present invention with reference to the accompanying drawings. The same reference numerals shown in each drawing indicate the same members.

The present invention aims to replace the four-stroke engine previously provided as an auxiliary engine _{with a two-stroke engine having low CO 2} emission and high efficiency, and to change the existing equipment arrangement concept to achieve the above object. Since this is a technical problem, before describing the present invention, it is necessary to look at the concept of arrangement of equipment of a conventional ship in which an auxiliary engine is provided with a four-stroke engine.

2 is a side view showing the arrangement structure of the stern of a conventional ship, and FIG. 3 is a rear view of FIG. 2. And Figures 4 to 6 are respectively 2nd of the conventional ship It shows the arrangement structure of the stern part of the deck, 1st deck, and Upp deck.

Referring to FIG. 2, a main engine (M/E) provided for propulsion of a ship is disposed on the floor of a conventional ship, and a generator engine (G/E) that generates power required for the ship is disposed on the 2nd deck. Is placed.

On the 2nd deck, the G/E GVU room is located behind the generator engine (G/E). G/E The GVU room is a space where a gas valve unit (GVU) for supplying fuel gas to the generator engine (G/E) is installed. The air inside the G/E GVU room can be continuously discharged to the outside through an exhaust duct connected to the top (Exh. Duct).

3, in the 1st deck of a conventional ship, an engine control room (ECR) and an inert gas supplied as a purging gas during maintenance of an LNG storage tank (not shown) are produced. An integrated IGG/GCU 110 incorporating an Inert Gas Generator (IGG) and a Gas Combustion Unit (GCU) that burns and consumes Boil-Off Gas (BOG) generated in an LNG storage tank is disposed.

In addition, in addition to the integrated IGG/GCU 110, the 1st deck has an IGG cooler/chiller unit (IGG Cooler/Chiller Unit, 120), an auxiliary boiler (Aux. Boiler, 130) and a nitrogen buffer tank (N ₂ Buffer Tank, 140). The etc. may be installed, which will be described in more detail later with reference to FIG. 5.

First, referring to Figures 3 and 4, the '2nd' of the conventional ship Looking in more detail on the'deck' arrangement structure, 3 to 4 generator engines (G/E) typically provided as a 4-stroke engine are provided on the 2nd deck of a conventional ship. The generator engine (G/E) is placed in the middle of the hull in the width direction.

In addition, purifier rooms are arranged on the port and starboard sides based on the area where the generator engine (G/E) is placed. The purifier room is a place to purify various oils required for the operation of an engine, etc., and a number of purifiers, heaters, coolers, pumps, etc. are installed.

In addition, a portion of the upper side of the main engine M/E disposed on the floor is disposed on the 2nd deck to expose, and an opening for this may be formed.

Next, referring to Figs. 3 and 5, the '1st of the conventional ship Looking in more detail about the'deck' arrangement structure, on the 1st deck on the upper side of the area where the generator engine (G/E) is placed on the 2nd deck, the above-described integrated IGG/GCU 110, IGG cooler/chiller unit 120, auxiliary Equipment such as a boiler 130 and a nitrogen buffer tank 140 are disposed. In the drawing, one of the two components indicated by number 120 may be an IGG cooler unit and the other may be an IGG chiller unit. The IGG cooler unit cools the inert gas produced by the integrated IGG/GCU 110, and the IGG chiller unit cools the seawater supplied to the integrated IGG/GCU 110.

The auxiliary boiler 130 produces steam required for various equipment in the ship.

The nitrogen buffer tank 140 stores nitrogen supplied to purging the fuel gas remaining inside the combustion devices (engine, GCU, boiler, etc.) that use fuel oil and fuel gas together or alternately as fuel. It's a tank. Nitrogen stored in the nitrogen buffer tank 140 may be supplied after undergoing a compression process by the nitrogen compressor 150 before being used for purging.

On the 1st deck, an Engineer's Workshop and an E/R Store (Engine Room Store) are arranged on the port side of the area where the equipments 110, 120, 130, and 140 are arranged.

The engineer's workshop is a space where crew can perform simple repairs or work, and equipment such as a lathe, grinder, gas welding machine, and electric welding machine are installed.

The E/R store is mainly a place where spare parts for engine room equipment are stored.

On the 1st deck on the upper side of the area where the main engine (M/E) is placed, the engine control room is arranged in the middle of the ship's width direction, and the main switch room (Main SWBD Room) is arranged adjacent to each of the left and right sides of the engine control room. . The main distribution room drives the generator engine (G/E) and distributes and supplies the generated power to various customers on board.

Finally, looking in more detail about the arrangement structure of the'Upp deck' of a conventional ship with reference to FIGS. 3 and 6, the Upp deck is from a combustion device including a main engine (M/E) and a generator engine (G/E). An engine casing in which various pipes for discharging harmful gases are installed, and an accommodation port disposed in front of the engine casing are located.

On the Upp deck inside the engine casing, an integrated IGG/GCU 110 and a portion of the upper side of the auxiliary boiler 130 are exposed, and a gas valve unit for supplying fuel gas to the integrated IGG/GCU 110 is installed. /GCU GVU room is deployed.

Hereinafter, the arrangement structure of the ship according to the present invention in which the auxiliary engine (generator engine) is provided as a two-stroke engine will be described.

Figure 8 is a side view showing the arrangement structure of the stern of a ship according to the present invention, Figure 9 is a rear view of Figure 8. And Figures 10 to 12 are each 2nd of the ship according to the present invention It shows the arrangement structure of the stern part of the deck, 1st deck, and Upp deck.

Referring to FIG. 8, a main engine (M/E) provided for propulsion of a ship is disposed on the floor of a ship according to the present invention, and a generator engine (G/E) that generates power required for the ship is disposed on the 2nd deck. The arrangement of E) is similar to the conventional one. However, in the present invention, there is a difference in that the generator engine (G/E) is provided with a 2-stroke engine instead of a 4-stroke engine. In the present invention, both the main engine (M/E) and the generator engine (G/E) may be provided as ME-GI engines.

Conventionally (see FIG. 2), since the size of a four-stroke engine provided as a generator engine (G/E) is smaller and not high in height compared to a two-stroke engine, an opening is not required in the 1st deck. In addition, in the related art, since the weight of the four-stroke engine is not large, a lifting I-beam has been installed for maintenance. Specifically, a lifting I-beam was installed on the upper part of a four-stroke engine and used for overhaul of equipment such as a piston, cylinder liner, and cylinder cover.

On the other hand, in the present invention, as the generator engine (G/E) is provided as a two-stroke engine having a large size, an opening is formed in the 1st deck to accommodate a part of the upper side of the generator engine (G/E).

In addition, the present invention is to install an overhead traveling crane (C) under the Upp deck so that heavy weight parts can be handled during maintenance of a generator engine (G/E) provided as a two-stroke engine. I can. If the height from the generator engine (G/E) to the ceiling is not sufficient, a Double Zib Crane can be installed instead of the overhead crane (C).

In addition, in general, since a two-stroke engine has a high vibrating power, the present invention secures the structural stability of a generator engine (G/E) provided as a two-stroke engine by designing the 2nd deck as low as possible when the ship is built. can do.

In addition, the present invention minimizes the girder and web installed under the 2nd deck on which the generator engine (G/E) is installed, equipment arrangement, convenience of equipment maintenance, arrangement of pipes and cable lines And it is necessary to reinforce the structure of the deck by installing a pillar (beam) supporting the deck in the lower part of the 2nd deck in consideration of the operator's passage.

In addition, in addition to the pillar (beam) or instead of the pillar (beam), a plurality of bulkheads supporting the jerk may be installed under the 2nd deck to reinforce the lower deck structure. In the case of installing the bulkhead, a hole may be formed in the bulkhead in consideration of equipment arrangement, convenience of equipment maintenance, arrangement of pipes and cable lines, and the passage of workers.

Pillars (beams) or a plurality of bulkheads installed for structural reinforcement may be installed to support between the lower part of the 2nd deck in the area where the generator engine (G/E) is disposed and the bottom surface of the hull.

On the other hand, the present invention can eliminate the G/E GVU room and the exhaust duct connected to the upper portion of the G/E GVU room provided in the stern in the prior art (see FIG. 2).

In the present invention, as the generator engine (G/E) is provided as a two-stroke engine, fuel gas of the same conditions (pressure, temperature, etc.) can be supplied to the generator engine (G/E) and the main engine (M/E). have. Therefore, in the present invention, there is no need to separately install the G/E GVU room for installing the gas valve unit of the generator engine (G/E), and the gas valve unit of the main engine (M/E) can be shared and used, and only additional piping is required. Just prepare.

In other words, since the generator engine G/E can receive fuel gas in the same conditions as the main engine M/E, the gas valve unit can be arranged using a common room.

Preferably, the gas valve unit of the generator engine (G/E) and the main engine (M/E) is a cargo compressor in which equipment for processing and supplying boil-off gas generated from an LNG storage tank (not shown) is installed. It can be arranged in a room (Cargo Compressor Room, not shown). The cargo compressor room is disposed outside the engine room, and is usually disposed above the LNG storage tank so as to be adjacent to the generating position of the boil-off gas.

Hereinafter, the arrangement structure for each deck of a ship according to the present invention will be described in more detail.

First, looking at the arrangement structure of the '2nd deck' of the ship according to the present invention with reference to FIGS. 9 and 10, a generator engine (G/E) provided as a two-stroke engine is provided on the 2nd deck of the ship according to the present invention. It is placed in the center of the direction.

In the present invention, one or two generator engines (G/E) may be installed. That is, although it is shown in the drawing that two generator engines (G/E) are provided on the 2nd deck, it is also possible to provide only one generator engine (G/E) by increasing the capacity of the two-stroke engine.

In addition, the present invention can be divided by dividing the port side and the starboard side area into two layers, respectively, based on the area in which the generator engine (G/E) is disposed. In other words, the present invention divides the area previously used as a Purify room into two floors. This is because, as will be described later, an opening is formed in the 1st deck on the upper side of the area where the generator engine (G/E) is disposed, and thus the necessity to move and arrange the equipment disposed in the area arises.

Looking from the port side of the area where the generator engine (G/E) is placed, the purifier room, which was conventionally provided in a single-story structure, is divided into two floors, and the lower floor is used as a purifier room, but the upper floor is It is used as an E/R store (Engine Room Store).

Likewise on the starboard side of the area where the generator engine (G/E) is placed, the purifier room, which was previously provided in a single-story structure, is divided into two floors, and the lower floor is used as a purifier room, but the upper floor is equipment related to nitrogen purging. To place. That is, a nitrogen buffer tank 140 and a nitrogen compressor 150 may be disposed on the upper layer of the purifier room on the starboard side.

In the present invention, the area where the generator engine (G/E) is placed, the port side area (the area where the purifier room and E/R store are placed) and the starboard side area (the area where the purifier room and nitrogen purging-related equipment are placed) The space may be partitioned by a partition wall BK.

Meanwhile, in the present invention, it has been described above that a pillar (beam) or a plurality of partition walls may be installed under the 2nd deck in the area where the generator engine (G/E) is disposed to reinforce the lower deck structure.

Next, looking at the arrangement structure of the '1st deck' of the ship according to the present invention with reference to FIGS. 9 and 11, on the upper 1st deck of the area where the generator engine (G/E) is placed on the 2nd deck, the generator as described above An opening for accommodating the upper part of the engine G/E is formed. Therefore, equipment such as the integrated IGG/GCU 110, the IGG cooler/chiller unit 120, the auxiliary boiler 130 and the nitrogen buffer tank 140, which were previously disposed in the corresponding area (see FIG. 5), must be moved and arranged. . Among them, it has been described above that the nitrogen buffer tank 140 is moved from the 2nd deck to the upper floor of the purifier room on the starboard side.

According to the present invention, an area previously used as an engineer's workshop (see FIG. 5) can be utilized as a space for arranging integrated IGG/GCU-related equipment. That is, the integrated IGG/GCU 110 and the IGG cooler/chiller unit 120 may be disposed on the port side of the area where the opening is formed to accommodate the upper part of the generator engine G/E on the 1st deck.

According to the present invention, the distance between the integrated IGG/GCU-related equipment (110, 120) and the nitrogen buffer tank (140) is further increased than before, while meeting the minimum separation distance recommended by the manufacturer of the _{nitrogen generator (N 2 Generator).} There is an effect of making it easier.

In addition, according to the present invention, as the E/R store area located on the 1st deck in the prior art (see FIG. 5) is moved from the 2nd deck to the upper floor of the port side purifier room, the corresponding area is converted into an Engineer's Workshop, It can be relocated to the welding area and fuel valve test room.

At this time, a hatch is installed between the engineer's workshop and the E/R store placed below it, or a floor that is usually fixed but can be removed if necessary, and the elevating facility of the engineer's workshop in the E/R store ( lifting facility). That is, the E/R store may be connected so that it can be moved to each other by an engineer workshop and an elevator facility disposed at the top.

On the 1st deck above the area where the main engine (M/E) is placed, an engine control room can be placed in the center of the ship's width direction, and the main switch room is located on the left and right sides of the engine control room, respectively. ) Can be placed adjacent to each other.

In this case, the present invention may apply a double wall structure to the engine control room in order to block noise transmitted from the two-stroke engine. In addition, a separate room or cofferdam may be disposed under the engine control room to realize the effect of a floating structure.

Finally, looking at the arrangement of the'Upp deck' of the ship according to the present invention with reference to Figs. 9 and 12, in the present invention, the auxiliary boiler 130 disposed on the 1st deck in the prior art (see Fig. 5) is an engine on the Upp deck. It can be seen that it has been moved and placed inside the engine casing.

In addition, on the Upp deck inside the engine casing, since the height of the integrated IGG/GCU 110 disposed on the 1st deck is high, an opening for accommodating it can be formed, and fuel gas is supplied to the integrated IGG/GCU 110 An IGG/GCU GVU room in which a gas valve unit is installed may be arranged.

In addition, as an opening for accommodating the integrated IGG/GCU 110 is formed on the UPp deck, a gas bottle store and a hydraulic power unit (Hyd. Power Unit) are also rearranged. 6 and 12 are compared, it is possible to confirm the rearrangement of the gas bottle store and the hydraulic power unit.

The gas bottle store is a place to store containers for gas used in gas welding machines, and includes an oxygen room (OX RM) that handles oxygen and an acetylene room (AC RM) that handles acetylene. can do. The hydraulic power unit is an equipment that provides pressure to the working fluid of various types of valves driven by hydraulic pressure.

Hereinafter, in order to apply a two-stroke engine as an auxiliary engine, that is, a power generation engine (G/E) in a ship according to the present invention, a technical means for supplementing the responsiveness of the two-stroke engine will be described.

Prior to describing the present invention, referring to FIG. 7, a configuration diagram of a conventional generator engine is described. In the prior art, a generator is connected to a plurality of generator engines (G/E) provided as a four-stroke engine, respectively, and the generator engine Electricity is produced by a generator driven by (G/E), and the power produced by the generator is supplied to various demanders under the control of a power management system (PMS).

On the other hand, in the present invention, replacing the generator engine (G/E) with a two-stroke engine is a basic idea of the invention, but the two-stroke engine is less responsive to an irregular load than the four-stroke engine. In order to use the two-stroke engine as the main power supply on board, it is necessary to provide a means to supplement the responsiveness.

13 to 17 are configuration diagrams of a generator engine according to the first to fifth embodiments of the present invention for supplementing the responsiveness of the two-stroke engine. Among them, the first to third embodiments use a mechanical method, and the fourth and fifth embodiments use an electrical method.

The first embodiment of the present invention, as shown in Figure 13, by installing a flywheel (Flywheel) between the generator engine (G / E) provided as a two-stroke engine and the generator, the generator engine (G / E). Responsiveness can be supplemented.

The flywheel is a rotating plate having a large rotational inertia, and is coupled to the crankshaft that converts the explosion stroke of the cylinder of the generator engine (G/E) into rotational motion, and serves to smoothly rotate the crankshaft.

In the first embodiment, by providing a sufficiently large diameter of the flywheel coupled with the crankshaft of the generator engine (G/E), even when irregular load fluctuations occur, irregular load fluctuations due to the inertia force of the flywheel are smoothly loaded. By making it, it is possible to keep the rotation of the generator engine (G/E) constant.

In the first embodiment, the diameter of the flywheel installed on the generator engine (G/E) side may be designed and applied to have a larger diameter than the flywheel installed on the main engine (M/E) side. That is, in the present invention, the generator engine (G/E) and the main engine (M/E) are both provided as a two-stroke engine, but the diameter of the flywheel installed on the generator engine (G/E) side is the main engine (M/E). It is provided with a larger diameter than E). This is because it is necessary to secure the responsiveness of the two-stroke engine in the generator engine (G/E) that produces the necessary electric power in the ship, compared to the main engine (M/E) that generates the propulsion of the ship.

In the second embodiment of the present invention, as shown in FIG. 14, a generator engine G/E provided as a two-stroke engine and a step-up gear are installed between the generators. /E)'s responsiveness can be supplemented.

When the generator is required to operate at a relatively high speed, the step-up gear adjusts the speed of the generator engine (G/E) to a speed suitable for the generator in response to sudden load fluctuations, thereby improving the responsiveness of the two-stroke engine. Complement.

According to the second embodiment, there is an effect of reducing the size of the generator because the RPM of the generator is increased by the step-up gear.

Referring to FIG. 15, in the third embodiment of the present invention, when a two-stroke engine is operated at a constant RPM and the load on the generator side is rapidly lowered, it tends to be easily over-speed. This is to prevent overspeed by putting enough RPM margin in (G/E).

That is, in the third embodiment, it can be seen that over-speed is prevented by derating the load applied to the generator engine G/E below the rated value and outputting the engine.

Finally, referring to FIGS. 16 and 17, the fourth and fifth embodiments of the present invention are prepared for irregular load fluctuations by installing a battery or a capacitor as an auxiliary power supply source.

That is, the fourth and fifth embodiments are concepts of supplementing the responsiveness of the generator engine (G/E) by supplementing the electric power charged in the battery or capacitor when an external irregular load fluctuation occurs.

In the fourth and fifth embodiments, even when irregular load fluctuations occur, the rotation of the generator engine (G/E) is made constant by making the irregular load fluctuations in a smooth load step by the power supplemented by the battery or capacitor. I can keep it.

The battery or capacitor can temporarily store a surplus of the power produced by the generator engine (G/E), and can supply the stored power to the consumer when the generator engine (G/E) does not sufficiently satisfy the demand load. .

On the other hand, when a battery or a capacitor is installed to supplement the responsiveness of the generator engine (G/E), a battery management system (BMS) or a capacitor management system (CMS) may be provided on the ship in addition to this.

When a BMS or CMS is additionally provided on the ship according to the present invention, the arrangement positions of these systems are described in FIG. Referring to Figure 18, BMS or CMS is the upper part of the steering system room (S/G Room) located in the stern (zone A), the middle floor (zone B) or the upper part of the Upp deck from the left/right side of the engine casing ( Area C), and on the left/right side of the accommodation area, on the upper side of the Upp deck (Zone D).

In the above-described embodiments, one or two generator engines (G/E) may be provided, and when two are provided, one may be installed in a redundancy concept.

In addition, the present invention installs a shaft generator on the shaft connecting the main engine (M/E) and the propellant (propeller), which is a propulsion engine, so that the surplus remaining after being consumed in propulsion among the power of the main engine (M/E). Power can also be used to generate additional power needed on board.

It is obvious to those of ordinary skill in the art that the present invention is not limited to the disclosed embodiments, and that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, it should be said that such modifications or variations belong to the scope of the claims of the present invention.

110: Integrated IGG/GCU
120: IGG cooler/chiller unit
130: auxiliary boiler
140: nitrogen buffer tank
150: nitrogen compressor
M/E: Main engine
G/E: Generator engine

Claims (23)

A main engine provided as a two-stroke engine as an engine for propulsion of a ship and disposed on the floor of the ship; And
Including; a generator engine provided as a two-stroke engine and disposed on the 2nd deck of the ship as a power generation engine for generating power required in the ship,
The area in which the generator engine is disposed is disposed at the center of the ship in the width direction, and is separated and partitioned by a bulkhead installed between the port and starboard areas,
In the upper 1st deck of the area where the generator engine is disposed, an opening is formed for accommodating a part of the upper side of the generator engine,
Ship's layout structure. The method according to claim 1,
In the 2nd deck, the port and starboard areas of the area where the generator engine is arranged are divided into two layers, and the lower layer is used as a purifier room,
Ship's layout structure. The method according to claim 2,
The upper layer of the purifier room disposed on the port side of the area where the generator engine is disposed on the 2nd deck is used as an E/R store in which spare parts of the engine room equipment are stored,
Ship's layout structure. The method of claim 3,
In the upper layer of the purifier room disposed on the starboard side of the area in which the generator engine is disposed on the 2nd deck, a nitrogen buffer tank for storing nitrogen supplied to equipment requiring nitrogen purging from the ship, and the nitrogen buffer tank Characterized in that the nitrogen compressor is installed to compress the nitrogen stored in,
Ship's layout structure. The method of claim 4,
The area in which the generator engine is disposed on the 2nd deck is characterized in that the structure is reinforced by the installation of a pillar (beam) or a plurality of bulkheads supporting a lower portion of the deck,
Ship's layout structure. The method of claim 5,
The 2nd deck on which the generator engine is disposed is designed to be as low as possible within a possible range when designing the ship,
Ship's layout structure. The method of claim 4,
In the 1st deck, characterized in that, to the port side of the area where the opening is formed to accommodate the generator engine, an area in which an integrated IGG/GCU is installed, and an engineer's workshop are arranged,
Ship's layout structure. The method of claim 7,
The engineer workshop disposed on the 1st deck and the E/R store disposed on the lower 2nd deck of the engineer workshop are connected to enable mutual movement using an elevator facility,
Ship's layout structure. The method of claim 7,
In the integrated IGG/GCU, the upper end portion is disposed to be exposed on the Upp deck inside the engine casing in which various pipes for discharging harmful gases from the main engine and the generator engine are installed,
On the Upp deck inside the engine casing, a gas valve unit room for supplying fuel gas to the integrated IGG/GCU is installed,
Ship's layout structure. The method of claim 9,
On the Upp deck inside the engine casing, an auxiliary boiler is installed,
Ship's layout structure. The method according to claim 1,
The gas valve unit for supplying fuel gas to the generator engine is used by sharing a gas valve unit for supplying fuel gas to the main engine, and is arranged using a common room,
Ship's layout structure. The method of claim 11,
The gas valve unit room for supplying fuel gas to the generator engine and the main engine is arranged in a cargo compressor room that processes boil-off gas generated from an LNG storage tank provided on a ship,
Ship's layout structure. The method according to any one of claims 1 to 12,
The generator engine is characterized in that one or two are installed,
Ship's layout structure. The method of claim 13,
The response of the generator engine by installing a flywheel coupled to the crankshaft of the generator engine or by installing a step-ip gear between the generator engine and the generator driven by the generator engine. Characterized by complementing sex,
Ship's layout structure. The method of claim 13,
The generator engine, characterized in that to prevent over-speed by outputting the engine by derating the load applied to the generator engine below the rated value,
Ship's layout structure. The method of claim 13,
Characterized in that a battery or capacitor is additionally installed to supplement the power produced from the generator engine,
Ship's layout structure. In a ship comprising a main engine provided as a propulsion engine of a ship, and a generator engine provided as a power generation engine for generating power required in the ship,
Both the main engine and the generator engine are provided as a two-stroke engine,
As the generator engine is provided as a two-stroke engine, an opening for accommodating a portion of the upper side of the generator engine is formed in the upper deck of the area in which the generator engine is disposed,
As the opening is formed, in order to move and arrange the equipment previously disposed in the area where the opening is formed, the port and starboard areas of the area in which the generator engine is disposed are divided into two layers. ,
Ship's layout structure. The method of claim 17,
The port and starboard areas of the area where the generator engine is placed are areas previously used as purifier rooms, and the lower layer of the floor divided into two is used as a purifier room as it is, and any one of the port and starboard areas Characterized in that the E / R store is moved and placed in the upper layer of,
Ship's layout structure. The method of claim 18,
In the upper layer of the remaining one of the port and starboard areas, equipment related to nitrogen purging is disposed,
Ship's layout structure. The method of claim 19,
As the E/R store is moved to the corresponding area, the engineer's workshop is moved to the area where the E/R store was previously placed.
Ship's layout structure. The method of claim 20,
As the engineer workshop is moved to the area where the E/R store was previously placed, the integrated IGG/GCU-related equipment is moved to the area where the engineer workshop was placed.
Ship's layout structure. The method of claim 19,
The area in which the generator engine is disposed and the area on the port side and the starboard side of the area in which the generator engine is disposed are separated and partitioned by a partition wall,
Ship's layout structure. The method of claim 17,
As both the main engine and the generator engine are provided as two-stroke engines, the main engine and the generator engine can receive fuel gas of the same specification, and the gas valve unit for supplying fuel gas to the generator engine is the As the gas valve unit for supplying fuel gas to the main engine can be shared and used, the gas valve unit room for the generator engine, which was previously installed to supply fuel gas to the generator engine, can be deleted.
Ship's layout structure.

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