CN214306475U - LNG storage tank that possesses novel vault - Google Patents
LNG storage tank that possesses novel vault Download PDFInfo
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- CN214306475U CN214306475U CN202120461301.XU CN202120461301U CN214306475U CN 214306475 U CN214306475 U CN 214306475U CN 202120461301 U CN202120461301 U CN 202120461301U CN 214306475 U CN214306475 U CN 214306475U
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- vault
- storage tank
- lng storage
- reticulated shell
- spherical reticulated
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Abstract
The utility model discloses an LNG storage tank with a novel vault, which comprises a tank body, a pressure resistant ring and a vault, wherein the vault is a Kaiwait spherical reticulated shell, the spherical reticulated shell is evenly divided into a plurality of triangular meshes with the same size through rod pieces and plate-type nodes, and the adjacent triangular meshes share the rod pieces and the plate-type nodes; the plate type node at the edge of the spherical reticulated shell is hinged to the base through a rod piece, and the base is fixedly connected to the top pressure-resistant ring. The utility model adopts the above structure LNG storage tank adopts the kaiwaite net shell, has improved the rigidity and the stability of vault, has reduced the construction process, has reduced the stress concentration phenomenon.
Description
Technical Field
The utility model belongs to the technical field of the LNG storage tank technique and specifically relates to a LNG storage tank that possesses novel vault.
Background
LNG (liquefied natural gas), which has methane as a main component and is known as the cleanest energy on earth, has the advantages of high calorific value, low pollution, low price, and the like. The storage scale tends to be large-scale due to high storage efficiency and land occupation saving.
At present, most of large LNG storage tanks built in China adopt overground full-capacity tanks, and mainly comprise steel sub-support inner tanks, concrete outer tanks, foundation layers, thermal protection systems and auxiliary equipment. However, most full-capacity tanks employ prestressed concrete and steel roofs. The processes of formwork erecting, pouring, formwork removing and the like of the concrete in the construction process of the prestressed concrete full-capacity tank all face the waste of working hours and resources. For a bimetallic full-capacity storage tank, because the self weight of a steel vault is large, instability is easy to occur when the span is large. And the use of a large amount of steel, the corrosion prevention of the steel is an important problem. In addition, the LNG storage tank has the advantages that along with the increase of the tank body volume of the LNG storage tank, the construction cost and the maintenance cost of the unit volume storage tank are in the descending trend, and the scale effect is very obvious. Therefore, it is necessary and meaningful to provide a new type of dome latticed shell structure.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a LNG storage tank that possesses novel vault solves current bulky LNG storage tank vault dead weight great, the construction process is complicated, the structure atress is inhomogeneous, the wholeness is lower and perishable problem.
In order to achieve the purpose, the utility model provides an LNG storage tank with a novel vault, which comprises a tank body, a pressure resistant ring and a vault, wherein the vault is a Kaiwait spherical reticulated shell, the spherical reticulated shell is evenly divided into a plurality of triangular meshes with the same size through rod pieces and plate type nodes, and the adjacent triangular meshes share the rod pieces and the plate type nodes; the plate type node at the edge of the spherical reticulated shell is hinged to the base through a rod piece, and the base is fixedly connected to the top pressure-resistant ring.
Preferably, a plurality of rib plates are uniformly distributed on the compression ring at the top.
Preferably, the spherical reticulated shell is formed by splicing six identical sub reticulated shells which are centrosymmetric.
Preferably, the rod piece is made of I-shaped steel made of aluminum alloy.
The utility model adopts the above structure possess the LNG storage tank of novel vault, have following advantage:
1. the vault adopts the Kaiwait reticulated shell, so that the rigidity and stability of the vault are improved, and the problem that the vault is easy to deform greatly is solved.
2. The vault structure is arranged symmetrically, so that the construction process is reduced, the internal force is distributed uniformly, and the overall strength of the vault is improved.
3. The arch crown I-shaped steel material is aluminum alloy, can keep good mechanical property at low temperature, and can not generate serious corrosion and abrasion. When the structure is subjected to various loads and earthquakes, the formed integral structure has enough rigidity and cannot be damaged by overturning and the like.
4. All the I-shaped steels of the vault are connected by plate-type nodes, so that the vault has good integrity. The I-shaped steel and the tank wall top pressure ring are connected by a pin shaft, so that the stress concentration of the latticed shell caused by the change of temperature or internal force can be relieved.
Drawings
Fig. 1 is a schematic structural diagram of a vault in an embodiment of the present invention;
FIG. 2 is a schematic diagram of a prior art LNG storage tank vault;
FIG. 3 is a schematic diagram of a LNG storage tank;
fig. 4 is a schematic structural diagram of a joint between the dome and the anti-pressure ring in the embodiment of the present invention.
Reference numerals
1. A rib plate; 2. a compression resistant ring; 3. i-shaped steel; 4. a plate node; 5. a base; 6. a dome; 7. and (5) a tank body.
Detailed Description
The technical solution of the present invention is further explained by the accompanying drawings and examples.
An LNG storage tank with a novel vault is shown in figures 1-4, and the storage tank is composed of a tank body 7, a pressure-resistant ring 2 and a vault 6. This application mainly reforms transform vault 6, and then improves the bulk strength of LNG storage tank to and reduce 6 construction processes of vault.
The vault 6 adopts a Kaiwait spherical reticulated shell structure, and compared with the top of the traditional rib annular free reticulated shell, the vault has small self weight and is convenient to construct. The spherical reticulated shell is formed by splicing six same sub reticulated shells which are centrosymmetric, and the spherical reticulated shell is symmetrically arranged in structure, so that uneven internal force caused by different lengths of rod pieces is reduced, and the overall strength of the vault 6 is improved.
The spherical reticulated shell is uniformly divided into a plurality of triangular meshes with the same size through the rod pieces and the plate type nodes 4. The shape of the grid is strong in stability, can fully resist gravity, is large in overall supporting acting force, and further avoids the vault 6 from being seriously deformed. The adjacent triangular meshes share the rod piece and the plate type node 4, and the vault 6 has good integrity.
The plate type node 4 at the edge of the spherical reticulated shell is hinged to the base 5 through a rod piece, and the base 5 is fixedly connected to the top pressure-resistant ring 2. The vault 6 and the tank body wall plate 7 are hinged, so that stress concentration of the latticed shell caused by temperature or internal force change can be relieved.
A plurality of rib plates 1 are uniformly distributed on the top pressure resistant ring 2, so that the supporting effect of the top pressure resistant ring 2 is improved, and the stability of the tank body is further improved.
In this embodiment, the rod member is an i-beam 3. The I-shaped steel 3 has good supporting performance no matter welding or bolting. Specifically, the I-steel 3 is made of aluminum alloy, so that the requirement of still keeping good mechanical property at low temperature is met, and severe corrosion and abrasion cannot occur within the designed service life.
To sum up, the utility model adopts the LNG storage tank that possesses novel vault of above-mentioned structure, structural rigidity is big, and stability is strong, and the rise span ratio of top screen shell satisfies "space grid structure technical specification" and structural design requirement completely to construction cycle has further been shortened.
The above are specific embodiments of the present invention, but the scope of protection of the present invention should not be limited thereto. Any changes or substitutions which can be easily conceived by those skilled in the art within the technical scope of the present invention are covered by the protection scope of the present invention, and therefore, the protection scope of the present invention is subject to the protection scope defined by the claims.
Claims (4)
1. The utility model provides a LNG storage tank that possesses novel vault, storage tank comprise jar body, compressive ring and vault, its characterized in that: the vault is a Kaiwait spherical reticulated shell, the spherical reticulated shell is uniformly divided into a plurality of triangular meshes with the same size through rod pieces and plate type nodes, and adjacent triangular meshes share the rod pieces and the plate type nodes; the plate type node at the edge of the spherical reticulated shell is hinged to the base through a rod piece, and the base is fixedly connected to the top pressure-resistant ring.
2. LNG storage tank with a novel vault according to claim 1, characterized in that: a plurality of rib plates are uniformly distributed on the compression ring at the top.
3. LNG storage tank with a novel vault according to claim 1, characterized in that: the spherical reticulated shell is formed by splicing six same sub reticulated shells which are centrosymmetric.
4. LNG storage tank with a novel vault according to claim 1, characterized in that: the rod piece is made of I-shaped steel made of aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120461301.XU CN214306475U (en) | 2021-03-03 | 2021-03-03 | LNG storage tank that possesses novel vault |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120461301.XU CN214306475U (en) | 2021-03-03 | 2021-03-03 | LNG storage tank that possesses novel vault |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214306475U true CN214306475U (en) | 2021-09-28 |
Family
ID=77835521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120461301.XU Active CN214306475U (en) | 2021-03-03 | 2021-03-03 | LNG storage tank that possesses novel vault |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214306475U (en) |
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2021
- 2021-03-03 CN CN202120461301.XU patent/CN214306475U/en active Active
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