Compartment structure of a dual-fuel ship

Abstract

The present invention provides a cabin structure for a dual-fuel ship. An engine room is arranged at the tail of the dual-fuel ship, a cargo hold is arranged on the front side of the engine room, an engine drive device for driving the rotation of the stern propeller is arranged in the pilot engine room, and a sealed LNG tank storage room is arranged between the engine room and the cargo hold. The LNG tank storage room is arranged between the engine room and the cargo hold in the width direction of the hull; the LNG tank storage room is an integral and coherent independent chamber or is separated by partition plates into a plurality of independent sub-compartments. The sub-compartments are arranged horizontally and / or vertically in the LNG tank storage room. An environmental sensor is installed in the independent chamber or each sub-compartment and is connected to the control cabin; the LNG tank body is fixed in the LNG tank storage room through a shock-absorbing base. The present invention provides an LNG tank storage room between the engine room and the cargo hold, which can reduce the occupied space of the LNG tank, improve the space utilization rate of the ship, and at the same time arrange the LNG tank near the engine room to reduce the number of pipelines of the power system.

Description

Technical Field

[0001] The present invention relates to a dual-fuel driven ship, and particularly to a cabin structure of a dual-fuel ship. Background Art

[0002] To meet the requirements of green environmental protection, more and more ship propulsion devices adopt dual fuel (marine diesel + liquefied natural gas). Among them, liquefied natural gas (LNG) is usually stored in a cryogenic high-pressure container. The outer shape of the LNG tank is generally spherical or cylindrical, and a relatively large and dedicated cabin needs to be arranged on the hull for storage.

[0003] Conventional LNG tanks are usually thin-walled spheres or cylinders due to the high internal pressure. Therefore, a relatively large cabin needs to be specially arranged on the ship for placement, resulting in waste of space; if arranged on the deck, exposure to wind and sun may cause the tank body to age, posing a safety hazard. Figure 1 As the LNG tank layout scheme for a certain ship, this layout form opens up a relatively large cabin longitudinally along the interior of the hull, occupying the space of other cabins and resulting in waste of space. At the same time, if the cabin of the LNG tank is designed inside the cabin, safety is particularly important. Summary of the Invention

[0004] The present invention provides a cabin structure of a dual-fuel ship, which can significantly reduce the occupied space of the LNG tank, improve the space utilization rate of the ship, and ensure the safety of the LNG tank in the cabin. The specific solution is as follows:

[0005] A cabin structure of a dual-fuel ship, wherein an engine room is provided at the tail of the dual-fuel ship, a cargo hold is provided in front of the engine room, an engine driving device for driving the rotation of the stern propeller is provided in the engine room, a closed LNG tank storage room is provided between the engine room and the cargo hold, the LNG tank storage room is arranged between the engine room and the cargo hold in the width direction of the hull, and the LNG tank storage room is provided with a cabin door;

[0006] The LNG tank storage room is an entire coherent independent chamber or is separated by partition plates into multiple independent sub-compartments. The sub-compartments are arranged horizontally and / or vertically in the LNG tank storage room, and environmental sensors are installed in the independent chamber or each of the sub-compartments and are connected to the control cabin;

[0007] In the independent chamber, a large LNG tank is installed through a shock-absorbing base, or in some / all of the sub-compartments, a small LNG tank is respectively installed through a shock-absorbing base. The large LNG tank is connected to the engine driving device through a gas transmission pipeline, and the small LNG tanks are connected to the engine driving device through parallel gas transmission pipelines.

[0008] Further, the environmental sensor is composed of a temperature and humidity sensor and a pressure sensor.

[0009] Furthermore, the length of the LNG tank storage room in the ship length direction does not exceed 10 meters.

[0010] Furthermore, the length of the large LNG tank or small LNG tank is perpendicular to the navigation direction.

[0011] In the present invention, an LNG tank storage room is opened between the engine room and the cargo hold, which can reduce the occupied space of the LNG tank, improve the space utilization rate of the ship. At the same time, arranging the LNG tank near the engine room can reduce the number of pipelines of the power system. In addition, one or more of the sub-compartments can be selected to arrange the LNG tank, and the arrangement method is flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0013] Figure 1 It is the layout form of the LNG tank in the LNG hull common in the prior art;

[0014] Figure 2 It is a side view of the traditional layout of the current hull, and the engine room and the cargo hold are adjacent to each other;

[0015] Figure 3 This is based on the present invention Figure 2 The schematic diagram of dividing the space between the engine room and the cargo hold for the LNG tank storage room;

[0016] Figure 4 It is a top view of the cabin layout in an embodiment. The schematic diagram of the LNG tank storage room between the engine room and the cargo hold. The two ends of the LNG tank storage room span the left and right sides of the ship's side;

[0017] Figure 5 In another embodiment Figure 4 The schematic diagram of the LNG tank storage room between the engine room and the cargo hold. The LNG tank storage room has the same width as the cargo hold;

[0018] Figure 6 In an embodiment, the LNG tank storage room is longitudinally divided into multiple independent sub-compartments by partitions. DETAILED DESCRIPTION OF THE INVENTION

[0019] In the following description, numerous specific details are given to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without one or more of these details. In other instances, some well-known technical features are not described to avoid obscuring the present invention.

[0020] To thoroughly understand the present invention, detailed steps and structures will be presented in the following description to illustrate the technical solution of the present invention. The preferred embodiments of the present invention are described in detail below. However, in addition to these detailed descriptions, the present invention may have other embodiments.

[0021] Referring Figure 2 - 6 As shown, the present invention provides a cabin structure for a dual-fuel ship. An engine room is provided at the tail of the dual-fuel ship, a cargo hold is provided in front of the engine room, an engine drive device for driving the rotation of the stern propeller is provided in the pilot engine room, and a sealed LNG tank storage room 10 is provided between the engine room and the cargo hold. The LNG tank storage room is arranged between the engine room and the cargo hold in the width direction of the hull. The LNG tank storage room 10 is provided with a hatch. The LNG tank storage room 10 is an integral continuous independent chamber or is separated into a plurality of independent sub-compartments 11 by partition plates (such as Figure 6 ), and the sub-compartments 11 are arranged horizontally and / or vertically in the LNG tank storage room 10. An environmental sensor is installed in the independent chamber or each sub-compartment 11 and is connected to the control cabin; a large LNG tank is installed in the independent chamber through a shock-absorbing base, or a small LNG tank is respectively installed in some / all of the sub-compartments 11 through shock-absorbing bases. The large LNG tank is connected to the engine drive device through a gas pipeline, and the small LNG tanks are connected to the engine drive device through parallel gas pipelines.

[0022] The present invention has opened up an LNG tank storage room 10 arranged in the width direction of the hull between the engine room and the cargo hold, and the advantages are as follows:

[0023] 1) It can reduce the occupied space of the LNG tank and improve the space utilization rate of the ship;

[0024] 2) The LNG tank is arranged near the engine room, which can reduce the number of pipelines in the power system;

[0025] 3) The LNG tank storage room 10 can be divided into a plurality of small sub-compartments 11 horizontally and vertically by partition plates. In actual use, one or more of the sub-compartments 11 can be selected to arrange the LNG tank, and the remaining empty sub-compartments 11 can also be used as storage rooms for placing fire-fighting equipment, daily necessities or as small cargo holds, and the arrangement method is very flexible.

[0026] In addition, the LNG tank body of the present invention is installed in the LNG tank storage room 10 through a shock-absorbing base, which can reduce the impact on the LNG tank body caused by the hull bumping and shaking, making the liquefied gas in the low-temperature liquid state in the tank more stable, thereby ensuring driving safety. An environmental sensor is installed in the LNG tank storage room 10 to monitor the relevant environmental data in the LNG tank storage room 10 in real time and timely feedback this data to the control cabin. Once a slight abnormality is detected, relevant personnel are reminded to intervene and handle it in a timely manner to ensure the safety of the LNG tank storage room 10 to the greatest extent. Preferably, the environmental sensor is composed of a temperature and humidity sensor and a pressure sensor.

[0027] In an alternative embodiment, the length of the LNG tank storage room 10 in the ship length direction does not exceed 10 meters to avoid excessive compression of the engine room and cargo hold space.

[0028] In an alternative embodiment, the length of the large LNG tank body or the small LNG tank body is perpendicular to the navigation direction, reducing the liquid level fluctuation of the liquid level inside the tank body caused by the inertia during the ship's navigation, thereby improving the safety of the LNG tank body.

[0029] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and the equipment and structures not described in detail should be understood to be implemented in a common manner in the art; any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes, without departing from the scope of the technical solution of the present invention, which does not affect the essence of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of protection of the technical solution of the present invention.

Claims

1. The cabin structure of a dual-fuel ship, where the engine room is arranged at the tail of the dual-fuel ship, a cargo hold is arranged at the front side of the engine room, and an engine drive device for driving the rotation of the stern propeller is arranged in the engine room, characterized in that, A sealed LNG tank storage room is provided between the engine room and the cargo hold. The LNG tank storage room is arranged between the engine room and the cargo hold in the width direction of the hull, and the LNG tank storage room is configured with a hatch door. The LNG tank storage room is an integral and coherent independent chamber or is divided into multiple independent sub-compartments by partition plates. The sub-compartments are arranged horizontally and / or vertically in the LNG tank storage room. An environmental sensor is installed in the independent chamber or each of the sub-compartments and is connected to the control cabin. The environmental sensor consists of a temperature and humidity sensor and a pressure sensor. One large LNG tank is installed in the independent chamber through a shock-absorbing base, or one small LNG tank is installed in some / all of the sub-compartments through shock-absorbing bases respectively. The large LNG tank is connected to the engine drive device through a gas pipeline, and the small LNG tanks are connected to the engine drive device through parallel gas pipelines. The length of the large LNG tank or the small LNG tanks is perpendicular to the sailing direction.

2. The cabin structure of the dual-fuel ship according to claim 1, characterized in that, The LNG tank storage room does not exceed 10 meters in the length direction of the ship.

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