Methanol venting system for ships

Abstract

The present invention relates to the technical field of vent pipe arrangement for ships. Disclosed is a methanol venting system for ships. The system comprises: a first vent pipe, a second vent pipe, a third vent pipe, a fourth vent pipe and a fifth vent pipe. The system is divided into a first vent pipe, a second vent pipe, a third vent pipe, a fourth vent pipe and a fifth vent pipe, such that the characteristics of different structures in a ship are utilized to fulfill a venting function, and the space occupancy on an open deck surface can be reduced while ensuring safety, thereby avoiding impacting the work of the crew, and avoiding the installation of anti-collision devices on the exterior of pipes.

Description

Methanol venting system for a marine vessel TECHNICAL FIELD

[0001] The present application relates to the technical field of marine venting pipe arrangement, and particularly relates to a methanol venting system for a marine vessel. BACKGROUND

[0002] At present, methanol fuel is widely used in marine vessels because it meets the concept of low carbon and environmental protection. However, as a low-flash-point volatile and toxic fuel, methanol fuel needs to be used in a way that reduces its impact on the marine vessel and personnel as much as possible. The existing methanol venting method mainly connects the methanol fuel tank with the outside of the ship body through a pipeline, and the pipeline is mainly arranged at an open deck surface, such as a passageway on the deck surface or a hatch coaming transverse frame, to ensure that the leakage can be directly diluted in the air.

[0003] However, such an arrangement occupies the width of the main deck surface passageway, making it inconvenient for crew to walk, and even causing the passageway width of some ships to not meet the regulatory requirement of not less than 600 mm. In addition, anti-collision facilities need to be arranged outside the pipeline, increasing the shipbuilding cost.

[0004] SUMMARY

[0005] The present application aims to provide a methanol venting system for a marine vessel, which can reduce the space occupation of the open deck surface, avoid affecting the work of the crew, and avoid arranging anti-collision facilities outside the pipeline under the premise of ensuring safety.

[0006] In order to achieve the above object, the present application provides a methanol gas permeation system for a ship, the ship comprising a superstructure, a methanol cabin, a fuel preparation channel, a cargo cabin, a side empty cabin and an isolation empty cabin, the superstructure, the side empty cabin, the cargo cabin and the methanol cabin being sequentially arranged along a first direction, the fuel preparation channel being arranged on one side of the side empty cabin in a second direction, the methanol cabin comprising a methanol fuel cabin and a fuel preparation room which are sequentially arranged along the second direction, and a side of the fuel preparation room away from the methanol fuel cabin being connected with the fuel preparation channel, the isolation empty cabin being arranged between the methanol cabin and the cargo cabin and comprising a first gas permeation pipeline, a second gas permeation pipeline, a third gas permeation pipeline, a fourth gas permeation pipeline and a fifth gas permeation pipeline, one end of the first gas permeation pipeline being connected with a top of the methanol fuel cabin and the other end of the first gas permeation pipeline extending into the isolation empty cabin, one end of the second gas permeation pipeline being connected with the other end of the first gas permeation pipeline and the other end of the second gas permeation pipeline extending through the fuel preparation room into the fuel preparation channel, the third gas permeation pipeline being arranged in the fuel preparation channel and one end of the third gas permeation pipeline being connected with the other end of the second gas permeation pipeline and the other end of the third gas permeation pipeline extending towards the cargo side empty cabin, one end of the fourth gas permeation pipeline being connected with the other end of the third gas permeation pipeline and the other end of the fourth gas permeation pipeline extending into the side empty cabin and extending towards the superstructure, and one end of the fifth gas permeation pipeline being connected with the other end of the fourth gas permeation pipeline and the other end of the fifth gas permeation pipeline extending through the superstructure to the outside of the ship.

[0007] Optionally, a side of the methanol fuel cabin facing the fuel preparation room protrudes from a side of the isolation empty cabin facing the fuel preparation room, and the part of the methanol fuel cabin protruding from the isolation empty cabin is a protruding part, one end of the first gas permeation pipeline being connected with a top of the protruding part and the other end of the first gas permeation pipeline extending along the first direction.

[0008] Optionally, the methanol gas permeation system further comprises a methanol concentration detection device arranged in the fuel preparation channel and used for detecting a methanol concentration in the fuel preparation channel.

[0009] Optionally, the side empty cabin comprises a plurality of cabin bodies sequentially arranged along the second direction, and any two adjacent cabin bodies are connected and communicated through a door hole, and the other end of the fourth gas permeation pipeline sequentially extends through the plurality of cabin bodies and the plurality of door holes and is connected with the fifth gas permeation pipeline.

[0010] Optionally, the methanol gas permeation system further comprises an oxygen concentration detection device, and the oxygen concentration detection device is arranged in each of the plurality of cabin bodies and used for detecting an oxygen concentration in the cabin body.

[0011] Optionally, the methanol gas permeation system further comprises a fan, and the fan is arranged in each of the plurality of cabin bodies and used for discharging methanol in the cabin body.

[0012] Optionally, the fourth gas-permeable pipeline is a single-walled pipeline.

[0013] Optionally, the fourth gas-permeable pipeline extends upward along the second direction.

[0014] Compared with the prior art, the methanol gas-permeable system for a ship has the beneficial effects that: by splitting the system into a first gas-permeable pipeline, a second gas-permeable pipeline, a third gas-permeable pipeline, a fourth gas-permeable pipeline, and a fifth gas-permeable pipeline, the characteristics of different structures in the ship are utilized to complete the gas-permeable function. Specifically, by arranging the first gas-permeable pipeline and the second gas-permeable pipeline in the methanol tank and arranging the third gas-permeable pipeline in the fuel preparation passage, the ventilation capacity and the methanol detection capacity of the methanol fuel tank, the fuel preparation room, and the fuel preparation passage are utilized to ensure that the gas-phase methanol generated from the methanol fuel tank can be safely transported to the side empty tank, so that the harm caused by methanol leakage is minimized. By arranging the fourth gas-permeable pipeline in the side empty tank, the space in the side empty tank is utilized to avoid the space occupation of the fourth gas-permeable pipeline on the open deck surface, thereby avoiding the impact on the work of workers. Moreover, since the side empty tank is not stacked with goods, the fourth gas-permeable pipeline does not need to worry about being damaged by the goods, and does not need to be provided with anti-collision facilities outside the pipeline. Finally, the fifth gas-permeable pipeline is communicated with the outside of the ship to complete the gas-permeable function. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 is a schematic diagram of the arrangement of the methanol gas-permeable system for a ship according to the embodiment of the present application;

[0016] Fig. 2 is an enlarged view of A in Fig. 1 according to the embodiment of the present application;

[0017] Fig. 3 is a schematic diagram of the arrangement of the methanol gas-permeable system for a ship according to the embodiment of the present application when the first gas-permeable pipeline does not pass through the isolation empty tank;

[0018] Fig. 4 is an enlarged view of B in Fig. 3 according to the embodiment of the present application.

[0019] In the drawings, 1 is a ship; 11 is a superstructure; 12 is a methanol tank; 121 is a methanol fuel tank; 122 is a fuel preparation room; 13 is a fuel preparation passage; 14 is a cargo tank; 15 is a side empty tank; 151 is a tank body; 16 is an isolation empty tank; 2 is a first gas-permeable pipeline; 3 is a second gas-permeable pipeline; 4 is a third gas-permeable pipeline; 5 is a fourth gas-permeable pipeline; 6 is a fifth gas-permeable pipeline; 7 is a methanol concentration detection device; 8 is an oxygen concentration detection device; 9 is a fan; X is a first direction; and Y is a second direction. DETAILED DESCRIPTION

[0020] The specific embodiments of the present application will be further described in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0021] In the description of the present application, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0022] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0023] As shown in FIGS. 1 and 2, a methanol gas permeation system for a ship 1 according to an embodiment of the present application, the ship 1 includes a superstructure 11, a methanol cabin 12, a fuel preparation passage 13, a cargo cabin 14, a side empty cabin 15 and an isolation empty cabin 16, the superstructure 11, the side empty cabin 15, the cargo cabin 14 and the methanol cabin 12 are sequentially arranged along a first direction X, the fuel preparation passage 13 is arranged on one side of the side empty cabin 15 in a second direction Y, the methanol cabin 12 includes a methanol fuel cabin 121 and a fuel preparation room 122 which are sequentially arranged along the second direction Y, and the side of the fuel preparation room 122 away from the methanol fuel cabin 121 is connected with the fuel preparation passage 13, the isolation empty cabin 16 is arranged between the methanol cabin 12 and the cargo cabin 14, and includes: a first gas permeation pipeline 2, a second gas permeation pipeline 3, a third gas permeation pipeline 4, a fourth gas permeation pipeline 5 and a fifth gas permeation pipeline 6; one end of the first gas permeation pipeline 2 is connected with the top of the methanol fuel cabin 121, and the other end extends into the isolation empty cabin 16; one end of the second gas permeation pipeline 3 is connected with the other end of the first gas permeation pipeline 2, and the other end penetrates through the fuel preparation room 122 into the fuel preparation passage 13; the third gas permeation pipeline 4 is located in the fuel preparation passage 13, and one end of the third gas permeation pipeline 4 is connected with the other end of the second gas permeation pipeline 3, and the other end extends towards the side empty cabin 15 of the cargo cabin 14; one end of the fourth gas permeation pipeline 5 is connected with the other end of the third gas permeation pipeline 4, and the other end extends into the side empty cabin 15 and extends towards the superstructure 11; one end of the fifth gas permeation pipeline 6 is connected with the other end of the fourth gas permeation pipeline 5, and the other end penetrates through the superstructure 11 to the outside of the ship 1.

[0024] Based on the above scheme, by splitting the system into the first ventilation pipeline 2, the second ventilation pipeline 3, the third ventilation pipeline 4, the fourth ventilation pipeline 5 and the fifth ventilation pipeline 6, the characteristics of different structures in the ship 1 are utilized to complete the ventilation function. Specifically, by arranging the first ventilation pipeline 2 and the second ventilation pipeline 3 in the methanol cabin 12 and arranging the third ventilation pipeline 4 in the fuel preparation passage 13, the ventilation capacity and the methanol detection capacity of the methanol fuel cabin 121, the fuel preparation room 122 and the fuel preparation passage 13 are utilized to ensure that the methanol gas generated from the methanol fuel cabin 121 can be safely transported to the side empty cabin 15, so that the harm caused by methanol leakage is minimized. By arranging the fourth ventilation pipeline 5 in the side empty cabin 15, the fourth ventilation pipeline 5 is prevented from occupying space on the open deck. Since there are few workers in the side empty cabin 15, the work of the workers is also prevented from being affected. Since there is no cargo accumulation in the side empty cabin 15, the fourth ventilation pipeline 5 also does not need to worry about being damaged by the cargo, and does not need to be provided with anti-collision facilities outside the pipeline. Finally, the fifth ventilation pipeline 6 is connected with the outside of the ship 1 to complete the ventilation function.

[0025] As shown in FIGS. 3 and 4, in order to facilitate construction and maintenance, the side of the methanol fuel cabin 121 facing the fuel preparation room 122 protrudes from the side of the isolation empty cabin 16 facing the fuel preparation room 122, and the part of the methanol fuel cabin 121 protruding from the isolation empty cabin 16 is a protruding part. One end of the first ventilation pipeline 2 is connected to the top of the protruding part, and the other end extends along the first direction X. In this way, when the second ventilation pipeline 3 is connected to the first ventilation pipeline 2, it does not need to pass through the isolation empty cabin 16, which can reduce the number of steel pipe through-cabin parts, thereby facilitating construction and maintenance.

[0026] As shown in FIG. 2, in order to facilitate detection of the methanol leakage of the third ventilation pipeline 4, a methanol concentration detection device 7 is further included. The methanol concentration detection device 7 is arranged in the fuel preparation passage 13 and is used to detect the methanol concentration in the fuel preparation passage 13.

[0027] As shown in FIG. 2, in order to reduce the construction amount, the side empty cabin 15 includes a plurality of cabin bodies 151 arranged in sequence along the second direction Y, and any two adjacent cabin bodies 151 are connected and communicated through a door opening. The other end of the fourth ventilation pipeline 5 sequentially passes through the plurality of cabin bodies 151 and the plurality of door openings and is connected with the fifth ventilation pipeline 6. Since the cabin body 151 does not have a requirement on the passage width, the fourth ventilation pipeline 5 can pass through the door opening without additional hole opening except for passing through the watertight wall structure, thereby reducing the construction amount.

[0028] As shown in FIG. 2, in order to ensure the safety of the fourth vent pipe, an oxygen concentration detection device 8 is further included, and the oxygen concentration detection device 8 is arranged in each of the plurality of cabin bodies 151, and the oxygen concentration detection device 8 is used to detect the oxygen concentration in the cabin body 151. Since the cabin body 151 is naturally ventilated through the vent pipe of the cabin body 151 itself, the methanol gas leaked from the fourth vent pipe is more likely to accumulate in the cabin body 151, and since the crew generally does not go into the cabin body 151, even if the leakage does not affect the crew, only the oxygen concentration detection device 8 needs to be arranged in the cabin body 151, so that the leakage of the fourth vent pipe can be quickly found, and then the fourth vent pipe can be quickly maintained.

[0029] As shown in FIG. 2, in order to further ensure the safety of the fourth vent pipe, a fan 9 is further included, and the fan 9 is arranged in each of the plurality of cabin bodies 151, and the fan 9 is used to discharge the methanol in the cabin body 151. When the oxygen concentration detection device 8 issues an alarm of low oxygen concentration, the crew can close the inlet and outlet valves of the methanol cabin 12, and use the fan 9 to forcibly ventilate the cabin body 151, and dilute the gas-phase methanol in the cabin body 151 to the outside.

[0030] Optionally, in order to reduce the cost, the fourth vent pipe 5 is a single-wall pipe. Since the fourth vent pipe 5 arranged in the side empty cabin 15 does not need to worry about the risk of methanol leakage, the fourth vent pipe 5 is arranged as a single-wall pipe to reduce the shipbuilding cost and facilitate construction.

[0031] In some embodiments, the first vent pipe 2, the second vent pipe 3, and the third vent pipe 4 are all single-wall pipes.

[0032] As shown in FIG. 1, in order to avoid the accumulation of liquid-phase methanol in the fourth vent pipe, the fourth vent pipe 5 extends upward along the second direction Y.

[0033] In summary, the methanol gas permeation system for the ship 1 provided by the embodiment of the present application splits the system into the first permeation pipeline 2, the second permeation pipeline 3, the third permeation pipeline 4, the fourth permeation pipeline 5 and the fifth permeation pipeline 6 to utilize the characteristics of different structures in the ship 1 to complete the gas permeation function. Specifically, the first permeation pipeline 2 and the second permeation pipeline 3 are arranged in the methanol cabin 12, and the third permeation pipeline 4 is arranged in the fuel preparation passage 13 to utilize the ventilation capacity and the methanol detection capacity of the methanol fuel cabin 121, the fuel preparation room 122 and the fuel preparation passage 13 to ensure that the methanol gas generated from the methanol fuel cabin 121 can be safely transported to the side empty cabin 15, so that the harm caused by methanol leakage is minimized. The fourth permeation pipeline 5 is arranged in the side empty cabin 15 to avoid the space occupation of the fourth permeation pipeline 5 on the open deck surface and avoid the influence on the work of workers. Since the side empty cabin 15 is not stacked with goods, the fourth permeation pipeline 5 also does not need to worry about being damaged by the goods, and does not need to be provided with anti-collision facilities outside the pipeline. Finally, the fifth permeation pipeline 6 is communicated with the outside of the ship 1 to complete the gas permeation function.

[0034] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make several improvements and replacements without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A methanol venting system for a ship, the ship comprising a superstructure, a methanol tank, a fuel preparation passage, a cargo hold, a side compartment, and an isolation compartment, wherein the superstructure, the side compartment, the cargo hold, and the methanol tank are arranged sequentially along a first direction, the fuel preparation passage is located on one side of the side compartment in a second direction, the methanol tank comprises a methanol fuel tank and a fuel preparation compartment arranged sequentially along the second direction, and the side of the fuel preparation compartment facing away from the methanol fuel tank is connected to the fuel preparation passage, and the isolation compartment is located between the methanol tank and the cargo hold, characterized in that, include: First ventilation pipe, second ventilation pipe, third ventilation pipe, fourth ventilation pipe and fifth ventilation pipe; One end of the first vent pipe is connected to the top of the methanol fuel tank, and the other end extends into the isolation chamber; One end of the second vent pipe is connected to the other end of the first vent pipe, and the other end passes through the fuel preparation room to the fuel preparation channel; The third vent pipe is located in the fuel preparation passage, with one end connected to the other end of the second vent pipe and the other end extending toward the cargo hold side empty compartment. One end of the fourth ventilation duct is connected to the other end of the third ventilation duct, and the other end extends into the side cabin and toward the superstructure. One end of the fifth vent pipe is connected to the other end of the fourth vent pipe, and the other end passes through the superstructure to the outside of the ship.

2. The methanol venting system for ships according to claim 1, characterized in that, The methanol fuel tank protrudes from the side of the fuel preparation room that faces the isolation chamber, and the portion of the methanol fuel tank protruding from the isolation chamber is a protrusion. One end of the first vent pipe is connected to the top of the protrusion, and the other end extends along the first direction.

3. The methanol venting system for ships according to claim 1, characterized in that, It also includes a methanol concentration detection device, which is located in the fuel preparation channel and is used to detect the methanol concentration in the fuel preparation channel.

4. The methanol venting system for ships according to claim 1, wherein the side-mounted empty compartment comprises a plurality of compartments arranged sequentially along the second direction, and any two adjacent compartments are connected by a doorway, characterized in that, The other end of the fourth ventilation duct passes through multiple cabins and multiple door openings in sequence and is connected to the fifth ventilation duct.

5. The methanol venting system for ships according to claim 4, characterized in that, It also includes an oxygen concentration detection device, which is installed in multiple of the chambers and is used to detect the oxygen concentration in the chamber.

6. The methanol venting system for ships according to claim 5, characterized in that, It also includes a fan, which is installed in each of the multiple chambers, and the fan is used to discharge methanol from the chamber.

7. The methanol venting system for ships according to claim 6, characterized in that, The fourth venting pipe is a single-walled pipe.

8. The methanol venting system for ships according to any one of claims 1-7, characterized in that, The fourth ventilated duct extends upward at an angle along the second direction.

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