Marine fuel gas conveying semi-enclosure structure

Abstract

The utility model relates to a marine fuel gas delivery semi-enclosure structure which comprises a fuel cabin joint position and a fuel preparation room, and the fuel cabin joint position and the fuel preparation room are respectively enclosed by a fuel cabin joint position steel enclosure wall and a fuel preparation room steel enclosure wall to form two independent cabins. The fuel cabin joints are communicated with the fuel preparation room through the single-wall pipes, the side wall plates, located at the fuel cabin joints at the two ends of the single-wall pipes, of the steel enclosure wall and the side wall plates of the steel enclosure wall of the fuel preparation room form a semi-enclosed space, and the single-wall pipes are arranged in the semi-enclosed space. An exhaust fan, a gas detector and an audible and visual alarm are further arranged in the semi-enclosed space. The semi-enclosed space is arranged, so that fuel gas is conveyed in a single-wall pipe mode, on the premise that the safety requirement is met, the arrangement difficulty of the fuel gas pipe is lowered, the installation technology is simplified, and therefore the purpose of lowering cost is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of ship systems, in particular to a semi-enclosed structure for ship gas transportation. Background Art

[0002] In the shipbuilding field, the use and research and development of LNG dual-fuel ships is still in its infancy. The ship body needs to build a complete LNG fuel supply system and open multiple compartments in the ship body to store, transport and process LNG. Figure 1 As shown, in the prior art, there must be a fully enclosed isolation chamber 11 between the fuel tank joint 1 and the fuel preparation room 2, and a double-walled gas pipe 12 must be arranged in the isolation chamber 11 to realize the transfer of gas to meet safety requirements. However, the double-walled gas pipe adopts an inner pipe and an outer pipe welded at both ends, and an elastic bracket is arranged in the middle cavity to form an integrated structure. However, this connection process is relatively complicated, and the inner pipe is used as a gas transmission pipeline, and the outer pipe is used as a ventilation and purge pipeline. Through the operation of the exhaust fan, it is ensured that when there is a gas leak in the inner pipe, the leaked gas can be removed in time to prevent the occurrence of excessive gas concentration and the risk of explosion. This requires that the outer pipe of the double-walled gas pipe is sealed, and a pressure test is required, and the installation process is relatively complicated. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a semi-enclosed structure for ship gas transportation. A semi-enclosed space is set up to allow gas to be transported in the form of a single-wall pipe. Under the premise of meeting safety requirements, the difficulty of arranging the gas pipe is reduced, the installation process is simplified, and the purpose of reducing costs is achieved.

[0004] The purpose of the utility model is achieved in this way:

[0005] A semi-enclosed structure for ship fuel gas transmission comprises a fuel tank joint and a fuel preparation room, wherein the fuel tank joint and the fuel preparation room are respectively surrounded by a steel enclosure wall of the fuel tank joint and a steel enclosure wall of the fuel preparation room to form two independent compartments, the fuel tank joint and the fuel preparation room are connected by a single-walled pipe, and the steel enclosure side wall plates of the fuel tank joint and the fuel preparation room corresponding to the single-walled pipe constitute a semi-enclosed space, the single-walled pipe is arranged in the semi-enclosed space, and an exhaust fan, a gas detector and an audible and visual alarm are also arranged in the semi-enclosed space.

[0006] Preferably, the inner wall of the steel enclosure side wall plate of the fuel preparation room connected to the single-wall pipe is provided with an A60 insulation layer.

[0007] Preferably, the single-walled tube is a stainless steel tube, and a low-temperature insulation layer is provided on the outer surface of the single-walled tube.

[0008] Preferably, the low-temperature insulation layer is coated with a protective layer.

[0009] Preferably, the protective layer is made of 2 mm thick stainless steel tinplate.

[0010] The beneficial effects of the utility model are:

[0011] The semi-enclosed space is set up to transport gas in the form of single-wall pipes. Under the premise of meeting safety requirements, the difficulty of gas pipe layout is reduced and the installation process is simplified, thereby achieving the purpose of reducing costs;

[0012] The inner wall of the steel enclosure side wall panel of the fuel preparation room is provided with A60 insulation to meet the A60 fire protection requirements; the semi-enclosed space is equipped with an exhaust fan, a gas detector and an audible and visual alarm to ensure safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The present invention is a schematic diagram of the gas transmission structure between the fuel tank connection location and the fuel preparation room in the prior art.

[0014] Figure 2 It is a structural schematic diagram of the utility model.

[0015] Among them: fuel tank joint location 1; fuel preparation room 2; fuel tank joint location steel enclosure 3; fuel preparation room steel enclosure 4; single-wall pipe 5; fuel tank joint location steel enclosure side wall plate 3.1; fuel preparation room steel enclosure side wall plate 4.1; semi-enclosed space 6; exhaust fan 7; gas detector 8; sound and light alarm 9; A60 insulation layer 10; isolation air compartment 11; gas double-wall pipe 12. DETAILED DESCRIPTION

[0016] See also Figure 2 The utility model relates to a semi-enclosed structure for ship fuel gas transmission, comprising a fuel tank joint place 1 and a fuel preparation room 2, wherein the fuel tank joint place 1 and the fuel preparation room 2 are respectively surrounded by a fuel tank joint place steel enclosure 3 and a fuel preparation room steel enclosure 4 to form two independent compartments, the fuel tank joint place 1 and the fuel preparation room 2 are connected through a single-walled pipe 5, and the fuel tank joint place steel enclosure side wall plate 3.1 and the fuel preparation room steel enclosure side wall plate 4.1 corresponding to the single-walled pipe 5 constitute a semi-enclosed space 6, the fuel tank joint place steel enclosure 3 is surrounded by a plurality of fuel tank joint place steel enclosure side wall plates 3.1, and the fuel preparation room steel enclosure 4 is surrounded by a plurality of fuel preparation room steel enclosure side wall plates 4.1, the single-walled pipe 5 is arranged in the semi-enclosed space 6, and an exhaust fan 7, a gas detector 8 and an audible and visual alarm 9 are also arranged in the semi-enclosed space 6, and the exhaust fan 7, the gas detector 8 and the audible and visual alarm 9 are all electrically connected to an emergency cut-off system.

[0017] The inner wall of the steel enclosure side wall plate 4.1 of the fuel preparation room connected to the single-wall pipe 5 is provided with an A60 insulation layer 10 to meet the A60 fire separation requirements.

[0018] The single-walled tube 5 is a stainless steel tube, and a low-temperature insulation layer is provided on the outer surface of the single-walled tube 5 .

[0019] The low-temperature insulation layer is outer-coated with a protective layer made of 2 mm thick stainless steel tinplate. The protective layer is simple to manufacture and does not require pressure testing. The protective layer can effectively prevent external damage to the insulation layer and protect the low-temperature insulation layer.

[0020] Connecting bulkheads are provided at both ends of the steel enclosure side wall plate 3.1 of the fuel tank joint spaced side by side and connected to the single-walled pipe and the steel enclosure side wall plate 4.1 of the fuel preparation room. A passage is provided on the connecting bulkhead, and the connecting bulkhead reduces the exposure of the semi-enclosed space.

[0021] Working principle:

[0022] The steel enclosure side wall plate 3.1 at the fuel tank joint connected to the single-wall pipe and the steel enclosure side wall plate 4.1 of the fuel preparation room form a semi-enclosed space 6. The electrical equipment in this area is made explosion-proof to avoid sparks when gas leaks.

[0023] A gas detector with a self-checking function is arranged in the semi-enclosed space 6 to ensure that if there is a leak in the single-walled pipe that transports gas, an alarm can be triggered in time to notify remote personnel; when the gas detector detects a leak, an audible and visual alarm will be triggered, allowing personnel in the area to evacuate immediately. The exhaust fan is interlocked with the gas detector. If a fuel leak is detected, the fan will be automatically turned on to remove the dangerous gas in the area as soon as possible to below the explosion limit. The gas detection signal is connected to the emergency cut-off system, and the leak source is cut off after the leak is detected. Through the above measures, the single-walled pipe arranged in the semi-enclosed space can meet safety requirements.

[0024] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. A semi-enclosed structure for marine gas transportation, comprising a fuel tank joint and a fuel preparation room, wherein the fuel tank joint and the fuel preparation room are respectively surrounded by a steel wall of the fuel tank joint and a steel wall of the fuel preparation room to form two independent compartments, characterized in that: The fuel tank joint and the fuel preparation room are connected by a single-walled pipe. The steel surrounding wall side wall plates of the fuel tank joint and the steel surrounding wall side wall plates of the fuel preparation room corresponding to the single-walled pipe constitute a semi-enclosed space. The single-walled pipe is arranged in the semi-enclosed space. The semi-enclosed space is also provided with an exhaust fan, a gas detector and an audible and visual alarm.

2. A semi-enclosed structure for marine gas transportation according to claim 1, characterized in that: The inner wall of the steel enclosure side wall panel of the fuel preparation room connected to the single-wall pipe is provided with an A60 insulation layer.

3. A semi-enclosed structure for gas transportation on board a ship according to claim 1, characterized in that: The single-walled tube is a stainless steel tube, and a low-temperature insulation layer is provided on the outer surface of the single-walled tube.

4. A semi-enclosed structure for gas transportation on board a ship according to claim 3, characterized in that: The low-temperature insulation layer is outer-coated with a protective layer.

5. A semi-enclosed structure for marine gas transportation according to claim 4, characterized in that: The protective layer is made of 2 mm thick stainless steel tinplate.

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