CN115892351B - MARKIII type containment system's main shielding structure, cargo tank and LNG ship - Google Patents
MARKIII type containment system's main shielding structure, cargo tank and LNG ship Download PDFInfo
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- CN115892351B CN115892351B CN202211404588.8A CN202211404588A CN115892351B CN 115892351 B CN115892351 B CN 115892351B CN 202211404588 A CN202211404588 A CN 202211404588A CN 115892351 B CN115892351 B CN 115892351B
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- 239000010935 stainless steel Substances 0.000 claims abstract description 16
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 16
- 239000010432 diamond Substances 0.000 claims abstract description 10
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 8
- 239000012212 insulator Substances 0.000 claims abstract 2
- 238000003825 pressing Methods 0.000 claims description 4
- 239000010963 304 stainless steel Substances 0.000 claims description 3
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 2
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 239000003949 liquefied natural gas Substances 0.000 description 15
- 239000000306 component Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010964 304L stainless steel Substances 0.000 description 1
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention relates to a main shielding structure of MARKIII type enclosure system, which is covered above a main insulator and comprises a plurality of main shielding plates (1) which are mutually overlapped, wherein each main shielding plate (1) is a stainless steel plate with a square outline, a semicircular bend (2), a connecting bend (3) and a connecting part (5) are arranged on the square stainless steel plate, the four semicircular bends (2) are formed into diamond bulges on the square stainless steel plate, each corner of each diamond bulge is connected with one connecting bend (3), one end of each connecting bend (3) extends to the middle edge of each side of the stainless steel plate, the other end of each connecting bend (3) is connected with the vertex angle of each diamond bulge, and the connecting bend (3) and two adjacent semicircular bends (2) form a Y-shaped connecting part (5). The main shielding structure, the cargo tank and the LNG ship have the advantages of enhancing structural strength and playing a role in preventing sloshing.
Description
Technical Field
The invention relates to the construction of Liquefied Natural Gas (LNG) ships, in particular to a main shielding structure of a MARKIII type containment system, a cargo tank and an LNG ship.
Background
LNG is increasingly becoming an important clean energy source for humans and is becoming more and more important in industry and life. The technology of lng transportation and storage is also particularly important because of the very uneven distribution of lng around the world.
Currently, the main stream of an enclosure system of an LNG ship is designed into a thin film type liquid cargo enclosure system. The enclosure system comprises a main shielding layer, a secondary shielding layer and an insulating layer, wherein the main shielding layer is made of stainless steel corrugated plates. Such as the french GTT corrugated board patent, which uses a unidirectional corrugated board-like protrusion layout. The corrugated plate is provided with the tile-shaped bulges, so that the corrugated plate has the function of preventing sloshing besides the strength enhancement. When a plurality of corrugated plates are spliced together to form the inner wall of the cargo tank, the conventional corrugated plates are of a cross structure formed by combining large corrugations and small corrugations and crossing longitudinally. However, in practice, the corrugated plate and the cross-shaped staggered structure have the problems of insufficient strength and insufficient anti-sloshing performance, so that a more advanced design is needed to make the structural strength stronger than that of the cross-shaped corrugated plate and also have better main shielding effect.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a novel MARKIII main shielding structure of a containment system. The novel corrugated form is adopted, and the special shape after splicing is adopted, so that the structure strength is enhanced, the function of preventing sloshing can be achieved, the structure strength is stronger than that of the cross corrugated plate, and the main shielding effect can be better.
In order to achieve the above object, the technical scheme of the present invention is as follows:
a MARKIII type enclosure system's main shielding structure, this main shielding structure covers in main insulating top, this main shielding structure is including a plurality of mutual overlap joint's main shielding board, main shielding board is the corrosion resistant plate that the profile is square, is equipped with semicircle bend, connecting bend and connecting portion on the corrosion resistant plate of square, four semicircle bend form into diamond arch on the corrosion resistant plate of square, each angle that this diamond arch all is connected with one connecting bend, connecting bend's one end extends to the middle part edge on each limit of corrosion resistant plate, the other end is connected the bellied apex angle of diamond, connecting bend and two adjacent semicircle bends form the connecting portion of Y shape.
In the main shielding structure of MARKIII-type enclosure system, a Y-shaped concave top is arranged at each connecting part, and the Y-shaped concave top is arranged along the outline of the connecting part.
In the main shielding structure of MARKIII-type enclosure system of the present invention, further, the Y-shaped concave top is arranged at the top center line of the semicircular protrusion, and the concave top is a groove structure formed by inverse pressing along the protrusion.
In the main shielding structure of the MARKIII type enclosure system, the semicircular bend and the connecting bend are all semicircular bulges formed by pressing.
In the main shielding structure of MARKIII-type enclosure system, as a further design, the radius of the convex of the semicircular bend is the same as that of the convex of the connecting bend.
In the main shielding structure of MARKIII type enclosure system, adjacent main shielding plates are combined in a lap joint mode, lap joint positions form lap joint edges, and connection bends on the adjacent main shielding plates correspond to each other during lap joint.
In the main shielding structure of MARKIII type enclosure system, four adjacent main shielding plates are mutually overlapped to form a square shielding plate combination, and four semicircular bends and eight butt-joint connection bends form an octagonal protrusion combination.
In the main shielding structure of MARKIII-type enclosure system, the main shielding plate is a 304 stainless steel plate with the plate thickness of 1 mm-1.5 mm.
The invention relates to a liquid cargo tank for storing LNG, which is used as a MARKIII type containment system, wherein a main shielding structure is arranged on a liquid cargo tank wall and comprises a plurality of main shielding plates which are mutually overlapped, diamond-shaped bulges which are formed by four semicircular curves are arranged on the main shielding plates, and the four corners of each diamond-shaped bulge are connected with a connecting curve.
An LNG ship is provided with a MARKIII type containment system on the LNG ship, and the MARKIII type containment system is provided with the main shielding structure.
Based on the technical scheme, the main shielding structure of the MARKIII type containment system has the following technical effects after being applied to the cargo tank:
1. The invention has simple form but obvious advantages, and compared with a crisscross structure with larger waves and small waves, the invention has simple manufacture and can well play roles of reinforcing the structure, preventing deformation and reducing sloshing.
2. Compared with the mode of intersecting small waves and large waves, the invention adopts the Y-shaped intersecting mode, the heights of semicircle curves are the same, and the higher the height of a component is, the better the anti-sloshing effect is; the denser the components on the component, the better the strength of the component will naturally be.
3. Compared with a crisscross structure, the main shielding structure has the advantages that the density of components is higher, and the strength is stronger; the height of the components is uniform, and compared with a combined structure with high ripple and low ripple, the anti-sloshing effect is better naturally.
Drawings
FIG. 1 is a schematic perspective view of a main shielding structure of a MARKIII enclosure system of the present invention.
FIG. 2 is a schematic top view of the main shielding structure of MARKIII enclosure system of the present invention.
FIG. 3 is a schematic side view of the main shielding structure of a MARKIII enclosure system of the present invention.
Fig. 4 is a schematic diagram of a lapping state of four main shielding plates of a main shielding structure of a MARKIII-type enclosure system according to the present invention.
Fig. 5 is a schematic diagram of a lapping state of sixteen main shielding plates of a main shielding structure of MARKIII-type enclosure system according to the present invention.
Detailed Description
The following will further describe the main shielding structure of MARKIII enclosure system of the present invention in detail with reference to the drawings and the specific embodiments, so as to make the structural composition and the splicing state more clearly understood, but not limit the scope of the present invention.
The invention relates to a main shielding structure of MARKIII type enclosure system, which is covered on the main insulation and comprises a plurality of main shielding plates 1 which are mutually overlapped.
As shown in fig. 1, as a core component of the present invention, the main shielding plate 1 is a stainless steel plate with a square outline, a semicircular bend 2, a connecting bend 3 and a connecting portion 5 are arranged on the square stainless steel plate, four semicircular bends 2 are formed into diamond-shaped protrusions on the square stainless steel plate, each corner of each diamond-shaped protrusion is connected with one connecting bend 3, one end of each connecting bend 3 extends to the middle edge of each side of the stainless steel plate, the other end of each connecting bend 3 is connected with the vertex angle of each diamond-shaped protrusion, and the connecting bends 3 and two adjacent semicircular bends 2 form a Y-shaped connecting portion 5.
In the main shielding structure of MARKIII-type enclosure system, the main shielding plate 1 is a 304 stainless steel plate with the plate thickness of 1 mm-1.5 mm. If the stainless steel plate with the wall thickness smaller than 1mm is not enough to meet the requirement of strength, the stainless steel plate with the wall thickness larger than 1.5mm is thicker, the forming processing is not facilitated, meanwhile, the types of the enclosure systems are increased, and the thickness of the 304L stainless steel plate with the wall thickness between 1mm and 1.5mm is proper and can be used as a main shield of a MARKIII novel enclosure system.
As shown in fig. 2 and 3, in the main shielding structure of the present invention, a Y-shaped concave top 4 is provided at each of the connection portions 5, and the Y-shaped concave top 4 is provided along the outline of the Y-shaped connection portion 5. Further, a Y-shaped concave top 4 is arranged at the top center line of the semicircular convex, and the concave top 4 is a groove structure formed by reverse pressing along the convex.
The main shielding structure of the invention is a square structure, the main shielding plate 1 is covered above the main insulation, and in order to facilitate installation, the main shielding plate 1 is a square plate with the length and the width of 1 meter, and the size is proper, and the carrying and the use are convenient; the center of the main shielding plate is provided with diamond-shaped bulges, and the bulges are arranged on the upper part, the lower part, the left part and the right part.
The convex part is semicircular when the main shielding structure is seen from the side, the semicircular diameter is 100mm, the proportion of the convex part and the main shielding plate is proper, and the four semicircular bends 2 are respectively arranged on the upper side, the lower side, the left side and the right side of the main shielding structure. The connecting bends 3 are semicircular, are respectively connected with two semicircular bends, play a role in stabilizing the structure, and the four connecting bends 3 form a stable structure. The connecting part 5 is a crossing part of the semicircular bend 2 and the connecting bend 3, and is Y-shaped, the semicircular bend 2 and the connecting bend 3 are naturally connected, and the top end of the connecting part is provided with a connecting groove. The concave type of directional semicircle centre of a circle department is called concave top 4, and concave type cooperation semicircle arch, fold perfect combination compares complicated joint form, both can play the effect of strengthening structural strength, can reduce the manufacturing degree of difficulty again.
In the main shielding structure of the invention, the semicircular bend 2 and the connecting bend 3 are all semicircular bulges which are pressed. As a further design, the radius of the bulges of the semicircular bend 2 and the connecting bend 3 is the same.
Because the cargo tank is a whole large closed cabin, shielding layers are all designed on the inner wall of the closed cabin, and the main shielding layers are composed of main shielding structures. Therefore, the main shield 1 needs to be spliced and combined to form a large-area main shield. The adjacent main shielding plates 1 are combined in a lap joint mode, lap joint edges 6 are formed at lap joint positions, and connecting bends 3 on the adjacent main shielding plates 1 correspond to each other during lap joint.
As shown in fig. 4, four adjacent main shielding plates 1 are mutually overlapped to form a square shielding plate combination, and an octagonal bulge combination is formed by four semicircular bends 2 and eight connecting bends 3 which are in butt joint. The four semicircular bends 2 and the four semicircular bends are the same in height, the three protrusions are connected, a powerful reinforcing combination is formed by combining the three protrusions, the reinforcing effect is achieved, the strength of the main shielding structure can be greatly enhanced, meanwhile, the protruding main shielding structure also plays a role in reducing liquid cargo sloshing, and compared with corrugated plates which are different in height and are crossed, the structure of the invention is more stable and reasonable. After the stainless steel plates of the four main shielding structures are lapped, the splicing center is in a regular octagon shape, extremely high strength is formed in the splicing seam, along with the increase of the splicing seam, new octagons and diamonds are formed on the four sides of the octagon, and the octagons are mainly arranged and the diamonds are auxiliary. More, as shown in fig. 5, when the main shielding plates are expanded to 16, 4 main shielding plates 1 are arranged in each row and each column, so that a larger main shielding structure is formed, and accordingly, the main shielding plates can be expanded to the inner wall of the whole cargo tank.
In fig. 4 and 5, the main shielding structure is a square plate with a certain thickness, a cargo tank is formed by splicing a plurality of main shielding structures, the boards are spliced in a lap joint mode, and the lap joint length is 30-50 mm.
The invention relates to a liquid cargo tank for storing LNG, which is used as a MARKIII type containment system, wherein a main shielding structure is arranged on a liquid cargo tank wall and comprises a plurality of main shielding plates 1 which are mutually overlapped, the main shielding plates 1 are provided with diamond-shaped bulges surrounded by four semicircular bends 2, and the four corners of each diamond-shaped bulge are connected with a connecting bend 3.
An LNG ship is provided with a MARKIII type containment system on the LNG ship, and the MARKIII type containment system is provided with the main shielding structure.
Needless to say, the main shielding structure, the cargo tank and the LNG ship of the MARKIII type containment system of the present invention are just specific implementations, and other similar structural designs and splicing combinations may be selected. In summary, the scope of the invention also includes other variations and alternatives that are apparent to the present patent.
Claims (4)
1. The main shielding structure of MARKIII-type enclosure system is covered above a main insulator and comprises a plurality of main shielding plates (1) which are mutually overlapped, and is characterized in that the main shielding plates (1) are stainless steel plates with square outlines, semicircular bends (2), connecting bends (3) and connecting parts (5) are arranged on the square stainless steel plates, the semicircular bends (2) and the connecting bends (3) are all semicircular bulges formed by pressing, the bulge radiuses of the semicircular bends (2) and the connecting bends (3) are the same, the four semicircular bends (2) are formed into diamond bulges on the square stainless steel plates, each corner of each diamond bulge is connected with one connecting bend (3), one end of each connecting bend (3) extends to the middle edge of each side of each stainless steel plate, the other end of each connecting bend is connected with the vertex angle of each bulge, the connecting bend (3) and two adjacent semicircular bends (2) form Y-shaped connecting parts (5), the connecting bends (2) and the connecting bends (3) are arranged at the top of the Y-shaped bulges (4) along the concave groove (4) of the top of the concave groove (4);
The adjacent main shielding plates (1) are combined in a lap joint mode, lap joint parts form lap joint edges (6), connecting bends (3) on the adjacent main shielding plates (1) are corresponding during lap joint, four adjacent main shielding plates (1) are mutually lap joint to form a square shielding plate combination, and four semicircular bends (2) and eight connecting bends (3) in butt joint form an octagonal protrusion combination.
2. The main shielding structure of MARKIII type enclosure system according to claim 1 is characterized in that the main shielding plate (1) is 304 stainless steel plate with the plate thickness of 1 mm-1.5 mm.
3. A cargo tank for storing LNG, characterized in that the cargo tank is provided with a main shielding structure of a MARKIII type containment system as claimed in claim 1 as a MARKIII type containment system on a tank wall, the main shielding structure comprises a plurality of main shielding plates (1) which are mutually overlapped, the main shielding plates (1) are provided with diamond-shaped bulges surrounded by four semicircle bends (2), and four corners of each diamond-shaped bulge are connected with a connecting bend (3).
4. An LNG ship, characterized in that a MARKIII-type containment system is provided on the LNG ship, and that the MARKIII-type containment system is provided with a main shielding structure as claimed in any one of claims 1-2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211404588.8A CN115892351B (en) | 2022-11-10 | 2022-11-10 | MARKIII type containment system's main shielding structure, cargo tank and LNG ship |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211404588.8A CN115892351B (en) | 2022-11-10 | 2022-11-10 | MARKIII type containment system's main shielding structure, cargo tank and LNG ship |
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| Publication Number | Publication Date |
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| CN115892351A CN115892351A (en) | 2023-04-04 |
| CN115892351B true CN115892351B (en) | 2024-06-11 |
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| CN117231904A (en) * | 2023-08-04 | 2023-12-15 | 江苏中圣高科技产业有限公司 | Metal film plate for liquefied gas warehouse |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112032550B (en) * | 2020-11-06 | 2021-03-26 | 中太海事技术(上海)有限公司 | A bimetal low temperature film storage cabin for liquefied natural gas stores |
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2022
- 2022-11-10 CN CN202211404588.8A patent/CN115892351B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19944662A1 (en) * | 1999-09-17 | 2001-06-07 | Dirk Bohmann | Three-dimensional support structure with flat, shaped parts comprises equal first and second flat parts with humps formed from polygons. |
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