Ship with composite ventilation device
By employing a composite venting device on LNG vessels, including a main vent pipe and an auxiliary vent pipe, forming a cubic boundary, and setting up maintenance channels and platforms, the problem of multiple cargo tanks occupying deck space is solved, achieving efficient use of space and convenient maintenance.
Patent Information
- Application Number
- CN202511207623.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-27
- Publication Date
- 2025-11-18
AI Technical Summary
On ships such as LNG carriers, each cargo tank is equipped with a venting device, which results in a large amount of deck space being occupied, especially in the case of multiple cargo tanks, leading to low space utilization efficiency.
A composite ventilation device is adopted, including two main ventilation pipes and two auxiliary ventilation pipes, forming a cubic boundary, and a maintenance channel and maintenance platform are set in it. The same set of maintenance channels and platforms are shared, reducing the number of independent ventilation devices.
It saves deck space, reduces material usage and costs, and improves the convenience and safety of maintenance.
Smart Images
Figure CN120964022A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of exhaust of ship cargo hold, in particular to a ship with a composite venting device. BACKGROUND
[0002] In the design and construction process of LNG (Liquefied Natural Gas) ship, FSRU (Floating Storage and Regasification Unit), LNG bunkering ship, LNG dual-fuel powered transport ship, etc., a venting device is usually provided for the service of liquid cargo hold and liquid cargo hold insulation layer. The venting device is mainly used for discharging natural gas or nitrogen gas from the liquid cargo hold safety valve or the insulation layer safety valve, and for discharging the hazardous gas in the generator of the ship equipped with dual-fuel generator / engine through the venting device.
[0003] Generally, the height of the venting device needs to meet the strict requirements of IGC code or IGF code, etc. Each liquid cargo hold or liquid cargo hold insulation layer is equipped with a dedicated venting pipeline. Generally, the liquid cargo hold is discharged to the main venting pipeline, and the liquid cargo hold insulation layer is discharged to the auxiliary venting pipeline. The main venting pipeline and the auxiliary venting pipeline extend upward above the deck, and a venting cap or a maintenance platform or other structures are arranged at the top of the main venting pipeline and the auxiliary venting pipeline to occupy the space on the deck.
[0004] For small ships with LNG loading capacity between 10,000 and 30,000 cubic meters, a plurality of liquid cargo holds are usually provided, and a venting device is arranged for each liquid cargo hold. The top of each venting device is located above the deck. The space on the deck is limited, and it is difficult to arrange multiple venting devices. Therefore, a lot of personnel activity space is often sacrificed. SUMMARY
[0005] Therefore, the present application provides a ship with a composite venting device to solve the problem that each liquid cargo hold corresponds to a venting device in the prior art, and when a plurality of liquid cargo holds are arranged on the ship, a large space on the deck is occupied.
[0006] A ship with a composite venting device comprises at least two liquid cargo holds, a main venting pipeline connected to the top of each liquid cargo hold, an auxiliary venting pipeline connected to the insulation layer of each liquid cargo hold, and a composite venting device arranged between at least two liquid cargo holds. The composite venting device comprises two main venting pipelines and two auxiliary venting pipelines, the axes of the four venting pipelines form the boundaries of a cube, a maintenance channel is arranged within the boundaries of the cube, and a maintenance platform is arranged at the top of the venting pipelines and the maintenance channel.
[0007] Further, the liquid cargo tank is provided with an even number of liquid cargo tanks arranged in sequence along the length direction of the ship, and the liquid cargo tanks are arranged in groups of two, and the number of the composite venting devices is half of the number of the liquid cargo tanks, and one composite venting device is arranged in each group of liquid cargo tanks.
[0008] Further, the liquid cargo tank is provided with an odd number of liquid cargo tanks arranged in sequence along the length direction of the ship, and the ship is further provided with a separate venting device, the separate venting device comprises a main venting pipe and an auxiliary venting pipe, the number of the liquid cargo tanks is more than twice the number of the composite venting devices plus one, and the liquid cargo tanks connected to the separate venting device are located at the bow or the stern of the ship.
[0009] Further, the liquid cargo tank is provided with an odd number of liquid cargo tanks arranged in sequence along the length direction of the ship, and the ship is further provided with a separate venting device, the separate venting device comprises a main venting pipe and an auxiliary venting pipe, the number of the liquid cargo tanks is more than twice the number of the composite venting devices plus one, and the liquid cargo tanks connected to the separate venting device are located at the bow or the stern of the ship.
[0010] Further, the main venting pipe and the main venting pipe, the main venting pipe and the auxiliary venting pipe, and the auxiliary venting pipe and the auxiliary venting pipe in the composite venting device are connected by the welding connecting bracket.
[0011] Further, the maintenance passage is provided with an anti-falling device.
[0012] Further, the main venting pipe is provided with a cable, one end of the cable is fixed to the main venting pipe, and the other end is fixedly connected to the deck.
[0013] Further, at least three cables are arranged on each main venting pipe, and the angle between any two adjacent cables is less than 180°.
[0014] The ship with the composite ventilation device has the beneficial effects that: the ship has at least two liquid cargo tanks, in order to save the space on the deck of the ship, the composite ventilation device is arranged, the composite ventilation device includes two main ventilation pipes and two auxiliary ventilation pipes, that is, the ventilation pipes on the two liquid cargo tanks are arranged in the same group of composite ventilation devices, and a maintenance channel and a maintenance platform are also arranged in the composite ventilation devices, that is, a maintenance channel and a maintenance platform are not arranged for each liquid cargo tank, so that the space occupation on the deck is reduced; meanwhile, the axes where the four ventilation pipes are located form the boundaries of a cube, the maintenance channel is arranged in the cube boundaries, the distance between the maintenance channel and the ventilation pipes is shortened, when maintenance is needed, the four ventilation pipes around can be simultaneously maintained through the maintenance channel, and thus the problem that each liquid cargo tank corresponds to a ventilation device in the prior art, and when the ship has a plurality of liquid cargo tanks, more space on the deck is occupied is solved. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.
[0016] Figure 1 It is a front view of the composite ventilation device of the ship with the composite ventilation device in the present application.
[0017] Figure 2 It is a side view of the composite ventilation device of the ship with the composite ventilation device in the present application.
[0018] Figure 3 It is a top view of the composite ventilation device of the ship with the composite ventilation device in the present application.
[0019] The meanings of the reference numerals in the drawings are as follows: 1, main ventilation pipe; 2, auxiliary ventilation pipe; 3, maintenance channel; 4, anti-falling device; 5, stay rope; 6, ventilation cap; 7, maintenance platform. DETAILED DESCRIPTION
[0020] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be described below by means of specific embodiments shown in the drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present application. In addition, in the following description, the description of the known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present application.
[0021] The terminology used in the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in the description of the disclosure and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
[0022] It should be understood that, although the terms first, second, third, etc. can be employed in this disclosure to describe various information, these information should not be limited to these terms, and should not be understood as indicating or implying that any or all of the information is of a certain rank or importance. These terms are used only to distinguish one type of information from another type of information. For example, without departing from the scope of the disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information. Depending on the context, the word "if" as used herein can be interpreted as "when" or "upon" or "in response to determining".
[0023] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "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 device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.
[0024] In the description of the present application, unless otherwise specified and limited, it should be noted that the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be mechanical connection or electrical connection, it can be the communication between two elements, it can be direct connection or indirect connection through intermediate medium, and the specific meaning of the above terms can be understood by those skilled in the art according to the specific circumstances.
[0025] In the subsequent description, the suffix such as "module", "component" or "unit" used to represent elements is only for the convenience of description of the present application, and has no specific meaning in itself. Therefore, "module" and "component" can be used interchangeably.
[0026] In order to better understand the technical solutions of the present application, the present application will be described in detail below in conjunction with the drawings.
[0027] In embodiment 1 of the ship (hereinafter referred to as ship) with a composite type ventilation device in the present application:
[0028] The ship in the embodiment is provided with a plurality of liquid cargo tanks, wherein the liquid cargo tanks are arranged in sequence along the length direction of the ship, and specifically, the ship in the embodiment is provided with four liquid cargo tanks. In order to ensure safety, each liquid cargo tank is connected with a main gas vent pipe, and each liquid cargo tank is connected with an auxiliary gas vent pipe in the insulation layer, so as to discharge excess gas. The ship in the embodiment can be an LNG ship, an FSRU, an LNG filling ship, an LNG dual-fuel power transport ship and various ships that need to be provided with a natural gas venting device. Of course, it is also applicable to LPG ships and VLGC ships that have a hazardous gas venting demand.
[0029] As shown in Figure 1 , Figure 2 and Figure 3 , the four liquid cargo tanks are arranged in two groups, a total of two groups, and each group of liquid cargo tanks is provided with a composite venting device. The composite venting device includes two main gas vent pipes 1 and two auxiliary gas vent pipes 2. The axes of the four gas vent pipes form the boundaries of a cube. A maintenance channel 3 is arranged within the boundaries of the cube, that is, one maintenance channel 3 can simultaneously maintain the four gas vent pipes, which is beneficial to reduce the number of maintenance channels 3. A maintenance platform 7 is further arranged at the top of the maintenance channel 3 and the gas vent pipe. The maintenance platform 7 extends above the deck. Since the gas vent pipes on the adjacent two liquid cargo tanks are arranged adjacent to each other, the two maintenance platforms 7 can be simplified into one. Since the plurality of gas vent pipes are arranged adjacent to each other, the maintenance channel 3 and the maintenance platform can be shared, so that the composite venting device occupies less space on the deck than the sum of the areas occupied by two separate venting devices, thereby saving space on the deck. Specifically, the two composite venting devices are arranged between the first liquid cargo tank and the second liquid cargo tank and between the third liquid cargo tank and the fourth liquid cargo tank. In addition, a venting cap 6 connected with the main gas vent pipe 1 and the auxiliary gas vent pipe 2 is arranged on the maintenance platform 7. Of course, in other embodiments, other numbers can also be arranged, as long as the number of liquid cargo tanks is even and the number of composite venting devices is half of the number of liquid cargo tanks, such as arranging two liquid cargo tanks, and only one composite venting device is arranged.
[0030] In order to facilitate the arrangement of the gas vent pipes, the main gas vent pipe 1, the main gas vent pipe 1, the main gas vent pipe 1 and the auxiliary gas vent pipe 2, and the auxiliary gas vent pipe 2 and the auxiliary gas vent pipe 2 in the composite venting device are connected by welding connection supports. The four supports form a cube shape, and the connection also improves the strength of each gas vent pipe. The maintenance channel 3 is arranged at the center position of the four gas vent pipes. In order to avoid falling of personnel when using the maintenance channel 3 to maintain the gas vent pipe, an anti-falling device 4 is further arranged on the maintenance channel 3 to improve safety. Specifically, the anti-falling device 4 can be a guardrail or a safety rope.
[0031] Because the gas vent pipe extends for a long distance and the main gas vent pipe 1 has a larger diameter and is heavier, there is a risk of tipping. In the present embodiment, a guy 5 is further arranged on the main gas vent pipe 1, one end of the guy 5 is connected to the main gas vent pipe 1 and the other end is connected to the deck, a metal pull ring is arranged on the main gas vent pipe 1, and a metal pull ring is also arranged on the deck, thereby assisting in supporting the main gas vent pipe 1. In order to better play a role, three guys 5 are arranged, and the three guys 5 are uniformly spaced along the axis of the main gas vent pipe 1, that is, the angle between two guys 5 is 120 degrees. Of course, in other embodiments, the guy 5 can also be arranged in other quantities or the plurality of guys 5 are no longer uniformly spaced, but should satisfy that the angle between any two adjacent guys 5 is less than 180 degrees.
[0032] In the present embodiment, the gas vent pipes of two adjacent liquid cargo tanks are arranged close to each other, so that the two liquid cargo tanks can share the same composite gas vent device, and the composite gas vent device can share the same maintenance channel 3 and maintenance platform 7, thereby reducing the occupation of the space on the deck. At the same time, since the maintenance channel 3 and the maintenance platform 7 are reduced, the materials used can also be reduced, thereby saving costs and reducing the weight of the ship.
[0033] In the embodiment 2 of the ship (hereinafter referred to as the ship) with the composite gas vent device in the present application:
[0034] In the present embodiment, a different number of liquid cargo tanks is used than in embodiment 1. Specifically, three liquid cargo tanks are arranged in the present embodiment, one liquid cargo tank at the bow is independently provided with a main gas vent pipe and an auxiliary gas vent pipe to form an independent gas vent device, and the remaining two liquid cargo tanks form a group, that is, a composite gas vent device is arranged between the second liquid cargo tank and the third liquid cargo tank, and the composite gas vent device has the same structure as the composite gas vent device in embodiment 1, which will not be repeated here. Of course, in other embodiments, the composite gas vent device can also be arranged between the first liquid cargo tank and the second liquid cargo tank, and the independent gas vent device is arranged on the third liquid cargo tank at the stern. Of course, in other embodiments, five liquid cargo tanks can be arranged, an independent gas vent device is arranged on the first liquid cargo tank, a composite gas vent device is arranged between the second and third liquid cargo tanks, and a composite gas vent device is arranged between the fourth and fifth liquid cargo tanks. Alternatively, a composite gas vent device is arranged between the first and second liquid cargo tanks, a composite gas vent device is arranged between the third and fourth liquid cargo tanks, and an independent gas vent device is arranged on the fifth liquid cargo tank.
[0035] In the embodiment 3 of the ship (hereinafter referred to as the ship) with the composite gas vent device in the present application:
[0036] In the present embodiment, different number of liquid cargo tanks from those in Embodiment 1 and Embodiment 2 are used. Specifically, five liquid cargo tanks are provided in the present embodiment, wherein a composite venting device is arranged between the first liquid cargo tank and the second liquid cargo tank; a composite venting device is arranged between the fourth liquid cargo tank and the fifth liquid cargo tank, and a separate venting device is arranged on the third liquid cargo tank, which includes a main venting pipe connected to the third liquid cargo tank and an auxiliary venting pipe connected to the insulation layer of the third liquid cargo tank. The structure of the composite venting device is the same as that in Embodiment 1, which will not be repeated here.
[0037] It should be clear that the described embodiments are only some of the embodiments of the present application, but not all. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.
Claims
1. A ship with a composite venting device, comprising at least two liquid cargo tanks, a main venting pipe is connected to the tank top of each liquid cargo tank, and an auxiliary venting pipe is connected to the insulation layer of each liquid cargo tank, characterized in that: At least two liquid cargo tanks are provided with a composite venting device, which includes two main venting pipes and two auxiliary venting pipes, the axes of the four venting pipes form the boundary of a cube, a maintenance channel is arranged within the boundary of the cube, and a maintenance platform is arranged at the top of the venting pipes and the maintenance channel.
2. The marine vessel with a composite venting device according to claim 1, characterized in that: The liquid cargo tanks are provided with an even number of liquid cargo tanks, the liquid cargo tanks are arranged in sequence along the length direction of the ship, the liquid cargo tanks are arranged in groups, the number of the composite venting devices is half of the number of the liquid cargo tanks, and one composite venting device is arranged in each group of liquid cargo tanks.
3. The marine vessel with a composite venting device of claim 1, wherein: The liquid cargo tanks are provided with an odd number of liquid cargo tanks, the liquid cargo tanks are arranged in sequence along the length direction of the ship, the ship is further provided with a separate venting device, the separate venting device includes one main venting pipe and one auxiliary venting pipe, the number of the liquid cargo tanks is more than twice the number of the composite venting devices plus one, and the liquid cargo tanks connected to the separate venting device are located at the bow or the stern of the ship.
4. The marine vessel with a composite venting device of claim 1, wherein: The liquid cargo tanks are provided with an odd number of liquid cargo tanks, the liquid cargo tanks are arranged in sequence along the length direction of the ship, the ship is further provided with a separate venting device, the separate venting device includes one main venting pipe and one auxiliary venting pipe, the number of the liquid cargo tanks is more than twice the number of the composite venting devices plus one, and the liquid cargo tanks connected to the separate venting device are located at the bow or the stern of the ship.
5. A marine vessel with a composite venting device according to any one of claims 1-4, characterized in that: The main venting pipes in the composite venting device are connected by welding connection supports.
6. A marine vessel with a composite venting device according to any one of claims 1-4, characterized in that: The maintenance channel is provided with a fall-preventing device.
7. A marine vessel with a composite venting device according to any one of claims 1-4, characterized in that: The main venting pipe is provided with a cable, one end of the cable is fixed to the main venting pipe, and the other end is fixedly connected to the deck.
8. The marine vessel with a composite venting device according to claim 7, characterized in that: Each main venting pipe is provided with at least three cables, and the angle between any two adjacent cables is less than 180°.