Bulk Carrier

Abstract

To provide a bulk cargo vessel capable of using the space on the upper deck for various uses.SOLUTION: A bulk cargo vessel 1, for example, includes a hold 2 storing bulk cargo, a housing area 3 installed on an upper deck 11, a deck crane 4 installed on the upper deck 11, and a funnel 5 for exhausting exhaust gas as indicated by Fig. 1. In addition, the bulk cargo vessel 1 has a multipurpose space 7 installed on the upper deck 11 between a hatch cover (fifth hatch cover 25a) of a hold 4 (fifth hold 25) and the housing area 3, capable of being used for multipurpose uses.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a bulk carrier designed for transporting bulk cargo in its holds. [Background technology]

[0002] In recent years, zero-emissions, which reduces the discharge of polluting substances and waste, has been proposed from the perspective of environmental conservation. For example, the roadmap for zero-emissions in international shipping includes the reduction of carbon dioxide (CO 2 Use of alternative fuels that emit less carbon dioxide (CO 2 ) on board CO 2 Items listed include the development of recovery technology and the use of secondary batteries. To realize these zero-emission technologies, it is necessary to install equipment on the hull that corresponds to these elements.

[0003] For example, Patent Document 1 discloses that in a ship having an upper structure installed on the upper deck of a hull, fuel tanks are arranged on both sides of the upper structure on the upper deck perpendicular to the fore-aft direction of the hull. The invention described in Patent Document 1 aims to install liquefied gas fuel tanks without reducing the cargo loading volume. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2020-50135 A Summary of the Invention [Problem to be solved by the invention]

[0005] The invention described in Patent Document 1 mentioned above has the problem that, because space is provided for arranging fuel tanks on both sides of the accommodation area, the burden of changing the design of the superstructure, including the accommodation area, is large.

[0006] In addition, the invention described in Patent Document 1 is designed to be limited to ships equipped with liquefied gas fuel tanks, so if an alternative fuel other than liquefied gas fuel is used, the CO 2 When installing a recovery system or when using it for other purposes, such as installing secondary batteries, there is a problem that the basic design must be reviewed.

[0007] The present invention has been devised in view of the above problems, and has an object to provide a bulk carrier in which the space above the upper deck can be utilized for various purposes. [Means for solving the problem]

[0014] Books According to the invention, in a bulk carrier having a plurality of holds for accommodating bulk cargo and an accommodation space installed on the upper deck, the plurality of holds are arranged from the bow side toward the stern side, each separated by a bulkhead, and an on-board CO2 recovery unit for recovering carbon dioxide in exhaust gas is arranged on the upper deck between the hatch cover of the hold arranged on the stern side and the accommodation space. 2 A bulk carrier is provided which is characterized in that it includes a recovery device or a secondary battery such as a storage battery. Effect of the Invention

[0015] According to the bulk carrier of the present invention described above, a multi-purpose space is formed between the hatch covers on the upper deck and the accommodation area, so that the multi-purpose space can be used for a variety of purposes. Necessary elements can be retrofitted without significantly revising the basic design of the hull structure and while minimizing the reduction in cargo hold volume, and the ship can also be fitted to a newly built ship. [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is a diagram showing a bulk carrier according to a first embodiment of the present invention, in which (A) is a side view and (B) is a plan view. [Diagram 2]FIG. 2 is a side view for comparison with a conventional bulk carrier, where (A) shows this embodiment and (B) shows the conventional bulk carrier. [Diagram 3] FIG. 11 is a side view showing a first mode of use illustrating a method of using the multipurpose space. [Figure 4] FIG. 11 is a side view showing a second usage form illustrating a method of using the multipurpose space. [Diagram 5] FIG. 11 is a partial side view showing a bulk carrier according to a second embodiment of the present invention, in which (A) shows the state in which the multi-purpose space is installed, (B) shows the first usage form, and (C) shows the second usage form. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, an embodiment of the present invention will be described with reference to Fig. 1(A) to Fig. 5(C). Here, Fig. 1 shows a bulk carrier according to a first embodiment of the present invention, where (A) is a side view and (B) is a plan view. Fig. 2 shows a side view for comparison with a conventional bulk carrier, where (A) shows this embodiment and (B) shows the conventional bulk carrier. In each figure, for convenience of explanation, the internal structure of the hull is illustrated as necessary.

[0018] 1, a bulk carrier 1 includes a hold 2 for accommodating bulk cargo, an accommodation space 3 installed on an upper deck 11, a deck crane 4 installed on the upper deck 11, and a funnel 5 for discharging exhaust gas. The bulk cargo is unpackaged cargo such as grain, iron ore, coal, etc.

[0019] The holds 2 are divided, for example, from the bow to the stern, into a first hold 21, a second hold 22, a third hold 23, a fourth hold 24, and a fifth hold 25 by bulkheads 12. The number of holds 2 is arbitrary and is not limited to the structure shown in the figure.

[0020] The first to fifth holds 21 to 25 are each equipped with a first hatch cover 21a, a second hatch cover 22a, a third hatch cover 23a, a fourth hatch cover 24a, and a fifth hatch cover 25a, which form lids that cover the upper openings.

[0021] The accommodation space 3 is an onboard structure having a wheelhouse and crew cabins. For example, as shown in FIG. 1(B), the accommodation space 3 is arranged so as to surround both sides and the front of the funnel 5. An engine room 6 in which an engine and the like are installed is arranged below the accommodation space 3. In addition, in the case where an engine casing (engine enclosure) constituting part of the engine room 6 is arranged on the upper deck 11, the accommodation space 3 may be arranged so as to surround both sides and the front of this engine casing (engine enclosure).

[0022] The engine room 6 is formed in a space partitioned in the longitudinal direction by the aft bulkhead 13 that divides the interior of the hull and a bulkhead 12 (bulkhead) of the fifth hold 25. The engine room 6 may be provided with a connection space in which equipment such as piping is installed.

[0023] The deck cranes 4 include, for example, from the bow to the stern, a first deck crane 41, a second deck crane 42, a third deck crane 43, and a fourth deck crane 44. The number of deck cranes 4 is arbitrary and is not limited to the structure shown in the figure. For ease of explanation, Fig. 1(A) illustrates the deck crane 4 in use, and Fig. 1(B) illustrates the deck crane 4 in a navigational state.

[0024] The bulk carrier 1 of this embodiment is characterized by having a multi-purpose space 7 that is installed on the upper deck 11 between the hatch cover (fifth hatch cover 25a) of the hold 4 (fifth hold 25) and the accommodation area 3 and can be used for multiple purposes.

[0025] Here, Fig. 2(B) is a side view showing a conventional bulk carrier 1'. In a conventional bulk carrier 1', an accommodation space 3' is generally arranged forward of a funnel 5'. For strength design reasons, the forward end of the accommodation space 3' is arranged on an extension line of a bulkhead 12' arranged between the fifth hold 25' and the engine room 6'.

[0026] Therefore, the gap between the fifth hatch cover 25a' and the accommodation area 3' is too narrow to utilize this space. The length of the boom of the fourth deck crane 44' is set according to the hatch dimensions, similar to the other deck cranes (first deck crane 41' to third deck crane 43').

[0027] In contrast, the bulk carrier 1 of this embodiment shown in Figure 2 (A) moves the stern coaming of the fifth hatch cover 25a toward the bow and moves the accommodation space 3 toward the stern, thereby greatly increasing the distance between the fifth hatch cover 25a and the accommodation space 3, thereby forming a multi-purpose space 7.

[0028] In this case, by positioning the rear end of the accommodation space 3 on the aft bulkhead 13, the aft bulkhead 13 can be effectively utilized as a strength member of the accommodation space 3.

[0029] The multipurpose space 7 can be used for a variety of purposes, but for example, assuming that a 20-foot container (6.06 m long x 2.44 m wide) is loaded vertically in the multipurpose space 7 (with the container's longitudinal direction aligned along the length of the ship), it is preferable that the length L of the multipurpose space 7 in the lengthwise direction of the ship be at least 7 m.

[0030] In addition, assuming that a 20-foot container (6.06 m long x 2.44 m wide) will be loaded horizontally in the multi-purpose space 7 (with the container's longitudinal direction aligned with the ship's width), it is preferable that the length L of the multi-purpose space 7 in the longitudinal direction be at least 3 m.

[0031] As shown by the dotted frame in Figures 1(A) and 1(B), the multi-purpose space 7 is formed on the upper deck 11 and has a rectangular planar space with the length L in the ship's longitudinal direction as its short side and the ship's width as its long side. The height of the multi-purpose space 7 is set to a height that does not obstruct the wheelhouse of the accommodation area 3, for example.

[0032] Therefore, according to the bulk carrier 1 of this embodiment, it is possible to install various onboard structures in the multipurpose space 7 formed on the upper deck 11 forward of the accommodation area 3.

[0033] As shown in the figure, the multi-purpose space 7 is disposed so as to straddle the bulkhead 12 (bulkhead) that constitutes the front wall of the engine room 6. By forming the multi-purpose space 7 in this way so that the bulkhead 12 is located approximately in the center of the multi-purpose space 7 in the longitudinal direction, the bulkhead 12 can be effectively used as a strength member for the shipboard structure disposed above the multi-purpose space 7.

[0034] Moreover, the fourth deck crane 44 is configured so as to be usable for transporting structures installed in the multipurpose space 7 or equipment and cargo to be mounted thereon. Specifically, the fourth deck crane 44 is equipped with a boom longer than those of the other deck cranes (the first deck crane 41 to the third deck crane 43).

[0035] The multipurpose space 7 can be used, for example, as a place to install fuel tanks for alternative fuels, a place to load containers, and an on-board CO2 recovery facility to capture carbon dioxide in exhaust gas. 2 It can be used as a place to install a recovery device, a place to install secondary batteries such as storage batteries, etc.

[0036] Here, Fig. 3 is a side view showing a first mode of use showing a method of using the multipurpose space. In the first mode of use shown in Fig. 3, a methanol fuel supply system 8 is installed in the multipurpose space 7. The methanol fuel supply system 8 includes, for example, a fuel equipment room 81 arranged on the upper deck 11 of the multipurpose space 7, and a fuel tank 82 installed above the fuel equipment room 81. It should be noted that the methanol fuel supply system 8 is not limited to the configuration shown in the figure.

[0037] As mentioned above, in the roadmap toward zero emissions in international shipping, methanol is attracting attention as one of the low-carbon or carbon-neutral fuels, and efforts are underway to introduce ships that run on methanol instead of heavy oil.

[0038] However, at present, the supply system for methanol fuel is not fully established. In particular, for bulk carriers operating on irregular routes, it is desirable to be able to carry a certain amount of conventional heavy fuel oil even when methanol-fueled ships are introduced.

[0039] Since the fuel volume of methanol (volume per calorific value) is approximately 2.4 times that of heavy fuel oil, and since a protective compartment (cofferdam) is required around the methanol fuel tank when it is located below the exposed deck (upper deck 11), if a methanol fuel tank is added below the exposed deck (upper deck 11) while maintaining a constant volume of conventional heavy fuel oil fuel tanks, the cargo hold volume will be reduced.

[0040] In order to avoid reducing the cargo hold volume, it is possible to place a methanol fuel tank above the exposed deck (upper deck 11). However, since space is limited on bulk carriers due to the presence of hatch covers, it is important to make effective use of the space above the exposed deck (upper deck 11).

[0041] In the bulk carrier 1 shown in the first utilization form, a multi-purpose space 7 is formed on the exposed deck (upper deck 11), so that even when methanol fuel, which is one of the alternative fuels, is applied to the bulk carrier as shown in the figure, a methanol fuel supply equipment 8 can be easily installed on the exposed deck (upper deck 11).

[0042] Furthermore, by arranging the multipurpose space 7 so as to straddle the bulkhead 12 between the engine room 6 and the fifth hold 25, the piping 83 required for the methanol fuel supply equipment 8 can be easily passed through to the upper deck 11 above the engine room 6. Furthermore, a reinforcing member for suppressing vibration of the methanol fuel supply equipment 8 may be arranged between the methanol fuel supply equipment 8 and the accommodation space 3.

[0043] Therefore, according to the bulk carrier 1 relating to the first utilization form of this embodiment described above, the methanol fuel supply equipment 8 can be retrofitted afterwards without significantly revising the basic design of the hull structure.

[0044] The methanol fuel supply facility 8 can also be installed in the multipurpose space 7 of a newly built ship. In this case, since the multipurpose space 7 is defined as a space in which the methanol fuel supply facility 8 is installed in advance, according to this embodiment, a bulk carrier 1 is provided that includes a hold 2 for accommodating bulk cargo, an accommodation space 3 installed on the upper deck 11, and includes a fuel tank 82 for alternative fuel (methanol fuel) arranged on the upper deck 11 between a hatch cover (fifth hatch cover 25a) of the hold 2 and the accommodation space 3.

[0045] Here, Fig. 4 is a side view showing a second usage form showing a method of using the multipurpose space. In the second usage form shown in Fig. 4, a container loading equipment 9 is installed in the multipurpose space 7. The container loading equipment 9 is equipment for loading, for example, 20-foot containers (containers 91) onto the upper deck 11. Note that the configuration of the container loading equipment 9 and the configuration such as the number of containers 91 that can be loaded are not limited to the configuration shown in the figure.

[0046] In the bulk carrier 1 shown in the second utilization form, in a conventional bulk carrier fueled by heavy oil, the multipurpose space 7 can be effectively utilized as container loading space, for example, until the ship is converted into a methanol-fueled ship.

[0047] The container loading equipment 9 can also be installed in the multipurpose space 7 of a newly built ship. In this case, since the multipurpose space 7 is defined as a space in which the container loading equipment 9 is to be installed in advance, according to this embodiment, a bulk carrier 1 is provided that includes a hold 2 for accommodating bulk cargo and an accommodation space 3 installed on the upper deck 11, and includes the container loading equipment 9 arranged on the upper deck 11 between a hatch cover (fifth hatch cover 25a) of the hold 2 and the accommodation space 3.

[0048] Next, a bulk carrier 1 according to a second embodiment of the present invention will be described with reference to Figures 5(A) to 5(C). Here, Figure 5 is a partial side view showing a bulk carrier according to a second embodiment of the present invention, where (A) shows a second embodiment having a multipurpose space, (B) shows a first usage form, and (C) shows a second usage form. Note that the same components as those in the above-mentioned embodiments are given the same reference numerals and duplicated explanations will be omitted.

[0049] In the second embodiment shown in Fig. 5(A), the bulkhead 12 of the fifth hold 25 is moved toward the bow, as compared to the first embodiment shown in Fig. 1. In this case, the bulkhead 12 of the fifth hold 25 is disposed below the forward end of the multi-purpose space 7.

[0050] In the first usage form of the second embodiment shown in Fig. 5(B), a methanol fuel supply facility 8 is installed in the multipurpose space 7. In the first usage form of the second embodiment shown in Fig. 5(C), a container loading facility 9 is installed in the multipurpose space 7. According to these usage forms, a bulkhead 12 can be disposed below the front end of the methanol fuel supply facility 8 or the container loading facility 9.

[0051] Therefore, according to these utilization forms, the bulkhead 12 can be effectively utilized as a strength member for the shipboard structure located above the multi-purpose space 7 while minimizing the reduction in cargo hold volume.

[0052] In addition, although not shown, as described above, the multipurpose space 7 is equipped with an on-board CO 2 It can also be used as a place to install recovery equipment, a place to install secondary batteries such as storage batteries, etc. In addition, the multi-purpose space 7 can be effectively used when using alternative fuels other than methanol fuel. In addition, these devices can also be installed on a newly built ship in the space equivalent to the multi-purpose space 7.

[0053] The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the spirit of the present invention. [Explanation of symbols]

[0054] 1. Bulk Carrier 2. Hold 3 Living area 4 Deck crane 5. Funnel 6. Engine Room 7. Multipurpose Space 8. Methanol fuel supply equipment 9 Container loading facilities 11 Upper Deck 12 Bulkhead 13 Stern bulkhead 21 First hold 21a First hatch cover 22 Second hold 22a Second hatch cover 23 Third hold 23a 3rd hatch cover 24 Fourth hold 24a 4th hatch cover 25 Fifth hold 25a 5th hatch cover 41 First Deck Crane 42 Second Deck Crane 43 Third Deck Crane 44 Fourth Deck Crane 81 Fuel equipment room 82 Fuel Tank 83 Piping 91 Container

Claims

[Claim 1] A bulk carrier having a plurality of holds for accommodating bulk cargo and accommodation space provided on the upper deck, The plurality of holds are arranged from the bow side toward the stern side, separated from each other by bulkheads. An on-board CO recovery system for recovering carbon dioxide in exhaust gas is arranged on the upper deck between the hatch cover of the hold arranged on the stern side and the accommodation space. ２ Including recovery devices or secondary batteries such as storage batteries, A bulk carrier characterized by:

Images