CN216709572U

CN216709572U - B-type cabin and ship

Info

Publication number: CN216709572U
Application number: CN202123138159.4U
Authority: CN
Inventors: 刘文华; 温保华; 朱越星
Original assignee: Shanghai Merchant Ship Design and Research Institute of CSSC No 604 Research Institute
Current assignee: Shanghai Merchant Ship Design and Research Institute of CSSC No 604 Research Institute
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-06-10
Anticipated expiration: 2031-12-14

Abstract

The utility model provides a B-type cabin and a ship, and relates to the technical field of oil and gas storage and transportation, wherein the B-type cabin comprises: a housing and a containment system. The shell is formed by the welding of polylith baffle, is formed with the chamber that holds of splendid attire LNG liquid in the shell, is equipped with the welding seam between two arbitrary adjacent baffles. The enclosure system comprises a diversion trench formed by bonding a plurality of heat insulation bricks, the extension direction of the diversion trench is the same as that of the welding line, the diversion trench is connected with the shell to form a leakage channel, all the welding lines are located in the leakage channel, and meanwhile, the leakage channel is communicated with the outside. The enclosure system also comprises a first heat insulation layer which is connected with the shell. Through setting up leak passage, take place the damaged back when the welding seam, in LNG liquid enters into leak passage, simultaneously, because leak passage still communicates with the external world, in the LNG liquid of leak passage can volatilize the outside air, can not corrode the hull.

Description

B-type cabin and ship

Technical Field

The utility model relates to the technical field of oil and gas storage and transportation, in particular to a B-type cabin and a ship.

Background

The cargo hold of a ship, which is dedicated to the transport of liquid cargo such as liquefied natural gas and liquefied petroleum gas, is generally called a tank. The most common shapes of the liquid tanks of liquefied gas carriers are spherical tanks, rectangular tanks, rhombic tanks, etc. The tanks may also be divided into types a, B and C, according to the design concept.

According to the design concept of the B-type independent liquid tank, the leakage condition of the liquid tank needs to be considered in the design of the liquid tank, and the liquid tank needs to have a leakage management function, namely, the liquid tank can still keep normal operation within a certain time (15 days) under the condition that the liquid tank leaks.

In the prior art, a drip tray is mostly arranged below a B-type cabin and is used for receiving dripped low-temperature LNG liquid, and when the LNG liquid exceeds the designed capacity of the drip tray, the LNG liquid can be moved out to corrode a ship body.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the following problems: the existing LNG liquid is easy to corrode a ship body after overflowing.

(II) technical scheme

In order to solve the above technical problem, an embodiment of an aspect of the present invention provides a B-type tank for a ship, including: a housing and a containment system;

the shell is formed by welding a plurality of partition plates, an accommodating cavity is formed in the shell, and a welding line is arranged between any two adjacent partition plates;

the enclosure system comprises a diversion trench formed by bonding a plurality of heat insulation bricks, the extension direction of the diversion trench is the same as that of the welding line, the diversion trench is connected with the shell to enclose a leakage channel, all the welding lines are positioned in the leakage channel, the leakage channel is communicated with the outside, and a control piece for controlling the opening and closing of the communication part is arranged at the communication part;

the enclosure system also comprises a first heat insulation layer, and the first heat insulation layer is connected with the shell.

According to an embodiment of the utility model, further, the containment system further comprises a first protective layer;

the first heat insulation layer is flush with the diversion trench;

the first protective layer is connected to the first insulating layer and the outer wall of the leakage path.

According to an embodiment of the utility model, further, the containment system further comprises a first polyurea layer;

the first polyurea layer is connected with the first protective layer.

According to an embodiment of the utility model, further, the enclosure system further comprises a plurality of first fixing rods, the B-type cabin comprises a plurality of frameworks, and the first fixing rods and the frameworks are arranged in a one-to-one correspondence manner;

the framework is arranged in the accommodating cavity and is connected with one surface, close to the accommodating cavity, of the shell, one end of the first fixing rod is connected with one surface, far away from the accommodating cavity, of the shell, and the other end of the first fixing rod is connected with the first protective layer;

the connection point of the first fixing rod and the shell and the connection point of the framework and the shell are overlapped.

According to an embodiment of the utility model, further, the enclosure system further comprises a second thermal insulation layer;

the second thermal-insulation layer is connected with the first polyurea layer.

According to an embodiment of the utility model, further, the containment system further comprises a second protective layer;

the second protective layer is connected with the second heat insulation layer.

According to an embodiment of the utility model, further, the containment system further comprises a second polyurea layer;

the second polyurea layer is attached to the second protective layer.

According to an embodiment of the present invention, further, the enclosure system further comprises a plurality of second fixing bars;

one end of the second fixing rod is connected with the first protective layer, and the other end of the second fixing rod is connected with the second protective layer;

any one of the second fixing rods and the first fixing rods are arranged in a staggered mode.

According to an embodiment of the utility model, further, the containment system further comprises a gas pipe;

one end of the gas pipeline is connected with a gas source, and the other end of the gas pipeline is communicated with the leakage channel;

the ship further comprises an air-permeable mast, the air-permeable mast is communicated with the outside, and the leakage channel is communicated with the air-permeable mast.

According to an embodiment of the present invention, further, the heat insulation brick is a foam glass brick.

According to an embodiment of the present invention, further, the first thermal insulation layer and the second thermal insulation layer are both polyurethane layers.

According to an embodiment of the present invention, further, the first protection layer and the second protection layer are both steel wire meshes.

In another aspect, the present invention further provides a ship, including the B-type cabin according to any one of the above embodiments.

The utility model has the beneficial effects that:

the utility model provides a B-type cabin, which comprises: a housing and a containment system. The shell is formed by welding a plurality of clapboards, a containing cavity for containing LNG liquid is formed in the shell, and a welding line is arranged between any two adjacent clapboards. The enclosure system comprises a diversion trench formed by bonding a plurality of heat insulation bricks, the extension direction of the diversion trench is the same as that of the welding line, the diversion trench is connected with the shell to form a leakage channel, all the welding lines are located in the leakage channel, and meanwhile, the leakage channel is communicated with the outside. The enclosure system also comprises a first heat insulation layer, and the first heat insulation layer is connected with the shell.

Through setting up leak passage, take place the damaged back when the welding seam, in LNG liquid enters into leak passage, simultaneously, because leak passage still communicates with the external world, in the LNG liquid of leak passage can volatilize the outside air, can not corrode the hull.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural view of a containment system provided in an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a partial enlarged view of FIG. 1 at B;

FIG. 4 is a schematic view of another perspective structure of the enclosure system provided in the embodiment of the present invention;

fig. 5 is a schematic view illustrating a first fixing rod and a second fixing rod according to an embodiment of the present invention;

FIG. 6 is a plan view of a leak path provided by an embodiment of the present invention;

fig. 7 is a schematic structural view of a flow guide groove according to an embodiment of the present invention.

An icon: 110-a housing; 111-a separator; 1111-weld joint; 120-a framework;

210-a diversion trench; 211-insulating brick; 220-a leakage pathway; 230-a first insulating layer; 240-a first protective layer; 250-a first polyurea layer; 260-a second insulating layer; 270-a second protective layer; 280-a second polyurea layer; 291-a first fixing bar; 292-a second fixation rod; 310-a gas conduit; 320-bracket.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

It should be noted that, in the description of the present invention, the terms "connected" and "mounted" should be interpreted broadly, for example, they may be fixedly connected, detachably connected, or integrally connected; can be directly connected or connected through an intermediate medium; either mechanically or electrically. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

One embodiment of the utility model provides a type B tank, which is the main equipment of an LNG ship and is used for storing LNG liquid. As shown in fig. 1 to 7, the B-type module includes: a housing 110 and a containment system.

The shell 110 is formed by welding a plurality of partition plates 111, a containing cavity for containing LNG liquid is formed in the shell 110, and a welding seam 1111 is arranged between any two adjacent partition plates 111. The containment system includes the guiding gutter 210 that is formed by bonding each other of polylith insulating brick 211, the extending direction of guiding gutter 210 with the extending direction of welding seam 1111 is the same, guiding gutter 210 with shell 110 links to each other and encloses into leakage path 220, and all welding seam 1111 is located in leakage path 220, simultaneously leakage path 220 communicates with the external world, and is equipped with the control that is used for controlling the switch of intercommunication department in the intercommunication department. Normally, the control member closes the communication, and when leakage occurs at the welding seam, the control member opens the communication, so that LNG can be volatilized to the outside. The enclosure system further includes a first insulating layer 230, the first insulating layer 230 being coupled to the housing 110.

Preferably, the control member is a solenoid valve.

In this embodiment, the outer shell 110 of the B-type cabin is generally spliced by a plurality of partition boards 111 and then connected in a welded manner to finally form the B-type cabin. Therefore, the surface of the B-type cabin is provided with a plurality of welding seams 1111. The guiding grooves 210 are arranged along the extending direction of the welding seams 1111, that is, the guiding grooves 210 are arranged outside each welding seam 1111 and are used for being connected with the shell 110 to form the leakage channel 220.

Specifically, when the weld 1111 is a straight line, the guiding groove 210 extends linearly, and when three or more partitions 111 are positioned, it can be understood that the weld 1111 extends from one point to a plurality of directions, and thus the guiding groove 210 also extends to a plurality of directions as the weld 1111. Therefore, the guiding grooves 210 corresponding to each welding seam 1111 are communicated with each other.

In this embodiment, the flow guide groove 210 is formed by bonding a plurality of insulating bricks 211, and specifically, the flow guide groove 210 includes a plurality of manufacturing methods. Firstly, the guiding gutter 210 is prefabricated in a prefabrication plant and then is transported to a welding site of a type B cabin for installation, at the moment, the bottom wall of the guiding gutter 210 is paved according to the width and the length of a welding seam 1111, and the bottom wall is bonded in a bonding mode, wherein the adopted bonding agent is an ultralow temperature resistant adhesive, so that the failure under the low temperature influence of LNG liquid is avoided. The bottom wall of the diversion trench 210 may be laid with one layer or multiple layers. After the bottom wall is laid, two ends of the bottom wall are overlapped upwards to form two side walls of the diversion trench 210. The side walls, like the bottom wall, may also have multiple layers. Finally, the prefabricated guiding channel 210 is bonded to the outer casing 110 by ultra-low temperature resistant glue to form the leakage path 220.

Of course, channels 210 may also be formed directly on housing 110. Specifically, the multi-layer insulating brick 211 is bonded to two sides of the welding seam 1111 by using an ultralow temperature resistant adhesive, and the bottom wall is bonded to two side walls by using an ultralow temperature resistant adhesive, so that the leakage path 220 is formed.

In this embodiment, through setting up leak path 220, after the welding seam 1111 takes place the damage, the LNG liquid enters into leak path 220 in, simultaneously, because leak path 220 still communicates with the external world, in the LNG liquid in leak path 220 can volatilize the outside air, can not corrode the hull.

In actual use, the heat insulation brick 211 is a foam glass brick, which is a novel inorganic heat insulation material with a uniform independent closed air gap structure, and is prepared by using glass as a main raw material, adding a proper amount of foaming agent, and performing heating roasting, annealing and cooling processing treatment in a high-temperature tunnel kiln. The foam glass brick not only has no toxicity and stable chemical property, but also has good heat-insulating property without deterioration in a wide temperature range from ultralow temperature to high temperature, and also plays a role in moisture protection, fire prevention and corrosion prevention. When the heat insulation material is used in harsh environments such as low-temperature deep cooling, underground, open air, inflammable, damp-prone, chemical corrosion and the like, the heat insulation material is safe and reliable, durable in use and known as a permanent heat insulation material which does not need to be replaced. Therefore, the heat-insulating and cold-insulating material is widely applied to heat insulation and cold insulation of permanent engineering such as petroleum, chemical engineering, buildings, refrigeration houses, underground engineering, shipbuilding, national defense and military industry and the like.

It is understood that the insulating tiles 211 may also be foam ceramic tiles or the like.

In this embodiment, after the fabrication of the leakage path 220 is completed, the first thermal insulation layer 230 is sprayed on the outer surface of the housing 110 to cool the accommodating chamber, so as to avoid the situation that the LNG liquid in the accommodating chamber is volatilized due to an excessively high temperature, and the pressure of the accommodating chamber is excessively high.

Preferably, the first thermal insulation layer 230 may be a foam material such as polyurethane, which has a good thermal insulation effect and a low cost.

In this embodiment, as shown in fig. 1 and 4, the first insulation layer 230 is flush with the channel 210 to facilitate the next installation of the first protective layer 240.

Specifically, as shown in fig. 2, the enclosure system further includes a first protective layer 240, and the first protective layer 240 is disposed on an outer surface of the first thermal insulation layer 230, so as to protect the first thermal insulation layer 230 and eliminate a hidden danger that the first thermal insulation layer 230 falls off.

In practical use, the first protective layer 240 is a steel wire mesh.

In this embodiment, as shown in FIG. 2, the containment system further includes a first polyurea layer 250. The first polyurea layer 250 is connected to the first protective layer 240. Specifically, the first shielding layer 240 is attached to a surface away from the outer shell 110.

Polyurea, an elastomeric material formed by the reaction of an isocyanate component and an amino component, has the most basic properties of corrosion resistance, water resistance, abrasion resistance, and the like.

In this embodiment, a first polyurea layer 250 is further disposed outside the first protective layer 240 to form a closed surface, and at the same time, the risk of secondary leakage of the B-type cabin, i.e., leakage from the leakage channel 220 to the outside, can be eliminated.

Further, because first insulating layer is the polyurethane layer, it has the potential risk of taking place the conflagration, through setting up first polyurea layer 250, can also play fire-retardant effect.

In the B-type cabin provided by this embodiment, as shown in fig. 1 and fig. 5, the enclosure system further includes a plurality of first fixing rods 291 for connecting and fixing the first protection layer 240.

The type B compartment includes a plurality of frames 120 for supporting the interior of the type B compartment. The first fixing rods 291 and the frame 120 are disposed in a one-to-one correspondence, that is, the number corresponds to the installation position.

Specifically, the skeleton 120 is disposed in the accommodating cavity, and is connected to one surface of the outer shell 110 close to the accommodating cavity, one end of the first fixing rod 291 is connected to one surface of the outer shell 110 far from the accommodating cavity, and the other end of the first fixing rod 291 is connected to the first protective layer 240, and a connection point of the first fixing rod 291 and the outer shell 110 coincides with a connection point of the skeleton 120 and the outer shell 110. To improve stability when the first fixing lever 291 is connected.

Specifically, in this embodiment, the first fixing rod 291 is a metal rod and is connected to the housing 110 by welding, specifically, the welding point is a connection point between the framework 120 and the housing 110.

By providing the first fixing rod 291, the connection stability of the first protection layer 240 is improved.

In actual use, welding the first fixing rod 291 is performed before spraying the first insulation layer 230.

In this embodiment, the first insulating layer 230, the first protective layer 240 and the first polyurea layer 250 are sequentially arranged in the inner shell from the inside to the outside.

In the B-type cabin provided by this embodiment, as shown in fig. 1, in order to improve the heat preservation effect, the enclosure system further includes a second heat insulation layer 260. The second insulation layer 260 is connected to the first polyurea layer 250.

In practical use, the second thermal insulation layer 260 is also a polyurethane layer, and after the first polyurea layer 250 is sprayed, the second thermal insulation layer 260 is sprayed.

Meanwhile, as shown in fig. 1 to 4, in order to prevent the second insulation layer 260 from falling off, a second protective layer 270 is further connected to the outside of the second insulation layer 260. The material and function of the second protection layer 270 are the same as those of the first protection layer 240, and are not described herein again.

As shown in fig. 3, in order to improve the flame retardant effect and prevent the secondary leakage of the LNG liquid, a second polyurea layer 280 is further disposed outside the second protection layer 270. Which is identical to the first polyurea layer 250 and will not be described in detail herein.

According to the type B cabin provided by this embodiment, as shown in fig. 3, the enclosure system further includes a plurality of second fixing rods 292 for fixing the second protection layer 270.

The second fixing rod 292 has one end connected to the first protection layer 240 and the other end connected to the second protection layer 270, and when the second fixing rod 292 is installed, it should be installed before the second insulation layer 260 is coated.

In this embodiment, it should be noted that any one of the second fixing rods 292 and the first fixing rods 291 are arranged in a staggered manner, so as to avoid that when the first fixing rods 291 and the second fixing rods 292 are directly connected, the heat transfer effect is good, and external heat is transferred to the accommodating cavity, or that low temperature in the housing 110 is transferred to the outside by the first fixing rods 291 and the second fixing rods 292, so as to improve the heat preservation effect.

In the B-type cabin provided in this embodiment, as shown in fig. 4, the enclosure system further includes a gas pipe 310; one end of the gas pipeline 310 is connected to a gas source, and the other end is disposed in the leakage path 220 and is communicated with the leakage path 220. The vessel further comprises an air permeable mast, which is in communication with the outside, the leakage path 220 being in communication with the air permeable mast.

In actual use, the control member is disposed between the leakage path and the air permeable mast.

In this embodiment, the gas source may be preferably nitrogen gas or inert gas, so as to avoid the risk of deflagration after mixing with the volatilized LNG.

The ship is provided with a ventilating mast communicated with the outside, the leakage channel 220 is communicated with the outside through the ventilating mast, and meanwhile, the air source is filled with air in the leakage channel 220, so that the volatilized LNG can be blown into the outside air, the ship body is prevented from being corroded, deflagration and the like.

As shown in fig. 4, when the gas pipe 310 is disposed in the leakage path 220, it is connected to the outer shell 110 by the bracket 320, and in particular, both ends of the bracket 320 are welded to the outer shell 110 and the inner wall of the gas pipe 310, respectively. Meanwhile, the gas pipe 310 is preferably filled with compressed nitrogen, which has a low temperature.

Another embodiment of the utility model further provides a ship comprising the B-type cabin in any one of the above embodiments.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A type B tank for a marine vessel, comprising: a housing (110) and a containment system;

the shell (110) is formed by welding a plurality of partition plates (111), an accommodating cavity is formed in the shell (110), and a welding seam (1111) is arranged between any two adjacent partition plates (111);

the enclosure system comprises a diversion trench (210) formed by mutually bonding a plurality of heat insulation bricks (211), the extending direction of the diversion trench (210) is the same as the extending direction of the welding seam (1111), the diversion trench (210) is connected with the shell (110) to enclose a leakage channel (220), the welding seam (1111) is positioned in the leakage channel (220), the leakage channel (220) is communicated with the outside, and a control part for controlling the opening and closing of the communication part is arranged at the communication part;

the enclosure system further includes a first insulating layer (230), the first insulating layer (230) being coupled to the housing (110).

2. The type B tank of claim 1, wherein the containment system further comprises a first protective layer (240);

the first heat insulation layer (230) is flush with the diversion trench (210);

the first protective layer (240) is connected to the first insulating layer (230) and to the outer wall of the leakage path (220).

3. The type B compartment of claim 2, wherein the containment system further comprises a first polyurea layer (250);

the first polyurea layer (250) is connected to the first protective layer (240).

4. The type B cabin of claim 3, wherein the containment system further comprises a plurality of first fixing rods (291), the type B cabin comprises a plurality of frameworks (120), and the first fixing rods (291) and the frameworks (120) are arranged in a one-to-one correspondence;

the framework (120) is arranged in the accommodating cavity and is connected with one surface, close to the accommodating cavity, of the shell (110), one end of the first fixing rod (291) is connected with one surface, far away from the accommodating cavity, of the shell (110), and the other end of the first fixing rod is connected with the first protective layer (240);

the connection point of the first fixing rod (291) to the housing (110) and the connection point of the skeleton (120) to the housing (110) coincide.

5. The type B tank of claim 4, wherein the containment system further comprises a second insulation layer (260);

the second insulating layer (260) is connected to the first polyurea layer (250).

6. The type B tank of claim 5, wherein the containment system further comprises a second protective layer (270);

the second protective layer (270) is connected to the second insulating layer (260).

7. The type B compartment of claim 6, wherein the containment system further comprises a second polyurea layer (280);

the second polyurea layer (280) is attached to the second protective layer (270).

8. The type B cabin of claim 7, wherein the containment system further comprises a plurality of second securing bars (292);

one end of the second fixing rod (292) is connected with the first protective layer (240), and the other end of the second fixing rod is connected with the second protective layer (270);

any one of the second fixing bars (292) is staggered with the first fixing bar (291).

9. The type B tank of claim 1, wherein the containment system further comprises a gas duct (310);

one end of the gas pipeline (310) is connected with a gas source, and the other end of the gas pipeline is communicated with the leakage channel (220);

the ship further comprises an air permeable mast, the air permeable mast is communicated with the outside, and the leakage channel (220) is communicated with the air permeable mast.

10. Type B cabin according to claim 1, characterized in that the insulating brick (211) is a foam glass brick.

11. Type B cabin according to claim 5, characterized in that both the first and the second insulation layer (230, 260) are polyurethane layers.

12. Type B cabin according to claim 6, characterized in that both the first protective layer (240) and the second protective layer (270) are steel wire mesh.

13. A ship, characterized in that it comprises a B-tank according to any one of claims 1 to 12.