CN110985878A - LNG storage tank adopting high-strength supporting structure - Google Patents
LNG storage tank adopting high-strength supporting structure Download PDFInfo
- Publication number
- CN110985878A CN110985878A CN201911377259.7A CN201911377259A CN110985878A CN 110985878 A CN110985878 A CN 110985878A CN 201911377259 A CN201911377259 A CN 201911377259A CN 110985878 A CN110985878 A CN 110985878A
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- Prior art keywords
- tank body
- epoxy glass
- steel pipe
- glass steel
- wall
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- 238000003860 storage Methods 0.000 title claims abstract description 20
- 239000004593 Epoxy Substances 0.000 claims abstract description 57
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 53
- 239000010959 steel Substances 0.000 claims abstract description 53
- 239000011521 glass Substances 0.000 claims abstract description 52
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 21
- 239000010935 stainless steel Substances 0.000 claims abstract description 21
- 238000009413 insulation Methods 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 238000004321 preservation Methods 0.000 claims abstract description 10
- 239000011152 fibreglass Substances 0.000 claims description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 3
- 238000010008 shearing Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 3
- 239000003949 liquefied natural gas Substances 0.000 description 13
- 230000008901 benefit Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
- F17C1/02—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge involving reinforcing arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
- F17C1/12—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge with provision for thermal insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0104—Shape cylindrical
- F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/01—Reinforcing or suspension means
- F17C2203/011—Reinforcing means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/03—Thermal insulations
- F17C2203/0391—Thermal insulations by vacuum
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses an LNG storage tank adopting a high-strength supporting structure, which comprises an inner tank body and an outer tank body sleeved outside the inner tank body, wherein a vacuum heat-preservation cavity is formed between the inner tank body and the outer tank body, and the inner tank body and the outer tank body are fixedly connected through the supporting structure. The supporting structure comprises a first fixing seat fixed on the outer wall of the inner tank body, a second fixing seat fixed on the inner wall of the outer tank body and a supporting column assembly, the supporting column assembly comprises an epoxy glass steel pipe, two ends of the epoxy glass steel pipe are fixedly connected with the first fixing seat and the second fixing seat in a sealing mode respectively, a groove is formed in the inner wall of the annular glass steel pipe, a stainless steel pipe is fixed in the groove, an air exhaust hole is formed in the side wall of the epoxy glass steel pipe, and the air exhaust hole is communicated with a vacuum heat insulation cavity and an inner cavity. The supporting structure has good heat insulation effect and strong shearing resistance, and the whole LNG storage tank is firmer.
Description
Technical Field
The invention relates to the technical field of LNG storage tanks, in particular to an LNG storage tank adopting a high-strength supporting structure.
Background
LNG is short for liquefied natural gas, is the recognized clean energy in the world today, and it has high calorific value, burns fully, and the price is low, transportation economy and security are good advantage, and LNG needs to pour into special LNG storage tank and transport. LNG storage tank mainly comprises inner tank body, outer jar of body, braced system and rigidity subassembly etc. and the inner tank body is used for the splendid attire LNG, and inside has filling shower, liquid level probe etc.. A closed vacuum heat insulation jacket is arranged between the outer tank body and the inner tank body, and the jacket adopts high vacuum multilayer heat insulation, also called super heat insulation. The outer tank body protects the inner tank body and supports the whole storage tank, and the inner tank body is suspended in the outer tank body by the support structure with high strength and good heat insulation performance.
The existing supporting structure adopts a glass fiber reinforced plastic support column, and in order to meet the anti-shearing force of the supporting structure, the size of the glass fiber reinforced plastic is required to be increased, the wall thickness is required to be increased, the heat transfer quantity is in direct proportion to the area, the diameter is large, the contact area is large, and the heat conduction quantity is large. Because the volume is large, the supporting pipe matched with the volume is correspondingly enlarged, the cost is also increased by several times, and the problems of more materials and poor heat insulation performance are caused. But the size of the glass fiber reinforced plastic support is reduced, and the problem of unstable fixation of the inner tank body is caused. Therefore, a reasonable supporting structure is needed to be designed, so that the supporting structure is not damaged by shearing force and has good heat insulation performance in the using process.
Disclosure of Invention
In order to overcome the above disadvantages, the present invention provides an LNG storage tank using a high-strength support structure, which has a stable structure and a good heat insulation performance.
In order to achieve the above purposes, the invention adopts the technical scheme that: adopt high strength bearing structure's LNG storage tank, including the inner tank body and the outer jar of body of registrate outside the inner tank body, form the vacuum insulation chamber between the inner tank body and the outer jar of body, the inner tank body passes through bearing structure fixed connection, its characterized in that with the outer jar of body: the supporting structure comprises a first fixing seat fixed on the outer wall of the inner tank body, a second fixing seat fixed on the inner wall of the outer tank body and a supporting column assembly, wherein the supporting column assembly comprises an epoxy glass steel pipe, the two ends of the epoxy glass steel pipe are fixedly connected with the first fixing seat and the second fixing seat in a sealing mode respectively, a groove is formed in the inner wall of the annular glass steel pipe, a stainless steel pipe is fixed in the groove, an air exhaust hole is formed in the side wall of the epoxy glass steel pipe, and the air exhaust hole is communicated with the vacuum heat preservation cavity and the inner cavity of the epoxy glass steel.
Preferably, in order to improve the stability of the support column assembly, the stainless steel tube and the epoxy glass steel tube are coaxially arranged, and the diameters of inner cavities of the stainless steel tube and the epoxy glass steel tube are the same.
Preferably, the stainless steel pipe is located in the middle of the epoxy glass steel pipe, the stability is high, the air exhaust hole is perpendicular to the axial direction of the epoxy glass steel pipe and penetrates through the epoxy glass steel pipe, and the inner cavity of the epoxy glass steel pipe is conveniently and quickly vacuumized.
Preferably, first fixing base is including fixing the reinforcing plate at the internal tank outer wall, the welding has the annular slab on the reinforcing plate, the annular slab encloses into and supplies the male mounting groove of tip, the second fixing base is the same with first fixing base interface, fixes the internal wall of outer jar, anti-shear force is good.
Preferably, the bottom of the mounting groove is coated with low-temperature glue. Realize the sealed fixed of epoxy glass steel pipe and first fixing base and second fixing base, prevent the rotation of epoxy glass pipe, the structure is more stable.
Preferably, the inner wall of the annular plate is provided with an annular groove, and a sealing ring is arranged in the annular groove. The epoxy glass steel tube has good sealing performance with the mounting groove and high stability.
Preferably, the outer side wall of the outer tank body is provided with a vacuum tube communicated with the vacuum heat preservation cavity. And vacuumizing the vacuum insulation cavity and the support pillar assembly through the vacuum insulation pipe.
Preferably, the support structure is axially provided with two layers along the inner tube of the inner tank body, each layer of the support structure is provided with six layers, and every two adjacent support mechanisms are 60 degrees.
The invention has the beneficial effects that the stainless steel pipe is lined in the epoxy glass steel pipe of the support column assembly, and because the shearing resistance of the stainless steel metal is far greater than that of the glass steel, the diameter of the epoxy glass steel pipe is reduced by 1/3 under the same shearing resistance, and the thickness of the epoxy glass steel pipe can be correspondingly reduced. The air exhaust holes communicated with the vacuum heat preservation cavity and the inner cavity of the epoxy glass steel tube realize the vacuum of the inner cavity of the epoxy glass steel tube and have good heat insulation effect. The whole supporting structure has the advantages of enhanced shearing resistance, less heat transfer, good economic benefit and more convenient installation.
Drawings
FIG. 1 is a schematic structural diagram of the present embodiment;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a cross-sectional view of the support column assembly of this embodiment;
FIG. 4 is a perspective view of the support post assembly of the present embodiment;
fig. 5 is a schematic structural view of the present example.
In the figure:
1-an inner tank body, 2-an outer tank body, 3-a vacuum heat preservation cavity, 4-a support structure, 41-a first fixed seat, 41 a-a reinforcing plate, 41 b-an annular plate, 41 c-a mounting groove, 41 d-a sealing ring, 42-a second fixed seat, 43-a support column assembly, 43 a-an epoxy glass steel tube, 43 b-a stainless steel tube, 43 c-an air suction hole and 5-a vacuum tube.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.
Referring to fig. 1 to 5, the LNG storage tank using a high-strength support structure in this embodiment includes an inner tank 1 and an outer tank 2 sleeved outside the inner tank 1, a vacuum insulation cavity 3 is formed between the inner tank 1 and the outer tank 2, and the inner tank 1 is used for storing liquefied natural gas. The inner tank body 1 and the outer tank body 2 are fixedly connected through a supporting structure 4. The support structure 4 sets up two-layerly along the axial of the inner tank body 1, every layer support structure 4 sets up six, adjacent two the support 4 structure is 60, makes the inner tank body 1 and the outer tank body 2 joint strength high.
Referring to fig. 2, the supporting structure 4 includes a first fixing seat 41, a second fixing seat 42 and a supporting pillar assembly 43 fixed therebetween, the first fixing seat 41 is fixed on the outer wall of the inner tank 1, and the second fixing seat 42 is fixed on the inner wall of the outer tank 2. The support column assembly 43 comprises an epoxy glass reinforced plastic tube 43a, and two ends of the epoxy glass reinforced plastic tube 43a are respectively and fixedly connected with the first fixing seat 41 and the second fixing seat 42 in a sealing manner. The inner wall of the epoxy glass steel tube 43a is provided with a groove, and a stainless steel tube 43b is embedded and fixed in the groove. The side wall of the epoxy glass reinforced plastic pipe 43a is provided with an air exhaust hole 43, and the air exhaust hole 43 is communicated with the vacuum heat preservation cavity 3 and the inner cavity of the epoxy glass reinforced plastic pipe 43 a.
The support column assembly 43 is manufactured by a winding method, the stainless steel tube 43b is fixed on the die, the surface of the die and the surface of the stainless steel tube 43b are processed cleanly, and the smoothness, the burr and the damage are avoided. Install the mould on winding equipment, wrap up the preparation on the mould, the inseparable cladding of each layer of epoxy outside the glass steel wool will be guaranteed to epoxy glass steel pipe 43a winding in-process, guarantees the laminating degree between epoxy glass steel pipe 43a and the nonrust steel pipe 43b, guarantees the concentricity of product. The eccentric center is not generated during processing, and no lubricant is used. After the support column assembly 43 is processed, the air exhaust hole 43 is opened. The resulting support post assembly 43 ensures out-of-roundness of less than 2 mm. The manufacture, inspection and acceptance should meet the requirements in NB/T47058-2017. The stainless steel tube 43b was S30408, and the epoxy glass steel tube 43a was Z3848.
Referring to fig. 3, in order to improve the stability of the support column assembly 43, the stainless steel tube 43b and the epoxy glass fiber reinforced plastic tube 43a are coaxially arranged, and the inner cavities of the stainless steel tube 43b and the epoxy glass fiber reinforced plastic tube 43a have the same diameter. The stainless steel tube 43b is positioned in the middle of the epoxy glass steel tube 43a, and the stability is high. The air exhaust hole 43 is arranged in the axial direction perpendicular to the epoxy glass steel tube 43a and penetrates through the epoxy glass steel tube 43a, so that the inner cavity of the epoxy glass steel tube 43a is conveniently and rapidly vacuumized, and the stainless steel tube 43b is provided with an air hole coaxially communicated with the air exhaust hole 43.
Referring to fig. 2, the first fixing seat 41 includes a reinforcing plate 41a fixed on the outer wall of the inner tank 1, a ring plate 41b is welded on the reinforcing plate 41a, the ring plate 41b encloses a mounting groove 41c for inserting the end portion, and the second fixing seat 42 has the same interface as the first fixing seat 41 and is fixed on the inner wall of the outer tank 2, so that the shearing resistance is good. The bottom of the mounting groove 41c is coated with low-temperature glue. The sealed fixation of epoxy glass steel tube 43a and first fixing base 41 and second fixing base 42 is realized, the rotation of epoxy glass steel tube 43a is prevented, and the structure is more stable. The two ends of the epoxy glass steel tube 43a are matched with the shape of the groove bottom of the mounting groove 41 c.
The inner wall of the annular plate 41b is provided with an annular groove, a sealing ring 41d is arranged in the annular groove, and the sealing ring 41d is in sealing fit with the epoxy glass steel tube 43 a. The epoxy glass steel tube 43a and the mounting groove 41c are good in sealing performance and high in stability.
The outer side wall of the outer tank body 2 is provided with a vacuum tube 5 communicated with the vacuum heat preservation cavity 3. The vacuum insulation cavity 3 and the support column assembly 43 are evacuated through the vacuum insulation tube.
The stainless steel tube 43b is lined in the epoxy glass steel tube 43a of the support column assembly 43, and because the shearing resistance of stainless steel metal is far greater than that of glass steel, under the same shearing resistance, the diameter of the epoxy glass steel tube 43a is reduced by 1/3, and the thickness can be correspondingly reduced. The air exhaust hole 43 communicating the vacuum heat preservation cavity 3 and the inner cavity of the epoxy glass reinforced plastic pipe 43a realizes the vacuum of the inner cavity of the epoxy glass reinforced plastic pipe 43a, and has good heat insulation effect. The whole supporting structure 4 has the advantages of enhanced shearing resistance, less heat transfer, good economic benefit and more convenient installation.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the present invention is not limited thereto, and any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (8)
1. Adopt high strength bearing structure's LNG storage tank, including inner tank body (1) and the outer jar of body (2) of the outer jar of body (1) including the registrate, form vacuum heat preservation chamber (3) between inner tank body (1) and the outer jar of body (2), inner tank body (1) and outer jar of body (2) are through a plurality of bearing structure (4) fixed connection, its characterized in that: the support structure (4) is including fixing first fixing base (41) at the inner tank body (1) outer wall, fixing second fixing base (42) and support column subassembly (43) at the outer tank body (2) inner wall, support column subassembly (43) include epoxy glass steel pipe (43a), the both ends of epoxy glass steel pipe (43a) respectively with first fixing base (41) and the sealed fixed connection of second fixing base (42), epoxy glass steel pipe (43a) inner wall is provided with the recess, the recess internal fixation has nonrust steel pipe (43b), epoxy glass steel pipe (43a) lateral wall is provided with aspirating hole (43c), aspirating hole (43c) communicate the inner chamber in vacuum insulation chamber (3) and epoxy glass steel pipe (43 a).
2. The LNG storage tank using a high-strength support structure according to claim 1, wherein: the stainless steel tube (43b) and the epoxy glass steel tube (43a) are coaxially arranged, and the diameters of the inner cavities of the stainless steel tube (43b) and the epoxy glass steel tube (43a) are the same.
3. The LNG storage tank using a high-strength support structure according to claim 2, wherein: the stainless steel pipe (43b) is located in the middle of the epoxy glass steel pipe (43a), and the air suction hole (43c) is perpendicular to the axial direction of the epoxy glass steel pipe (43a) and penetrates through the epoxy glass steel pipe (43 a).
4. The LNG storage tank using a high-strength support structure according to claim 1, wherein: the first fixing seat (41) comprises a reinforcing plate (41a) fixed on the outer wall of the inner tank body (1), an annular plate (41b) is welded on the reinforcing plate (41a), the annular plate (41b) is surrounded to form a mounting groove (41c) for inserting the end of an epoxy glass reinforced plastic pipe (43a), and the second fixing seat (42) is identical to the first fixing seat (41) in structure and fixed on the inner wall of the outer tank body (2).
5. The LNG storage tank using the high-strength support structure of claim 4, wherein: the bottom of each mounting groove (41c) is coated with low-temperature glue.
6. The LNG storage tank using the high-strength support structure of claim 4, wherein: the inner wall of the annular plate (41b) is provided with an annular groove, and a sealing ring (41d) is arranged in the annular groove.
7. The LNG storage tank using a high-strength support structure according to claim 1, wherein: the outer side wall of the outer tank body (2) is provided with a vacuum tube (5) communicated with the vacuum heat preservation cavity (3).
8. The LNG storage tank using a high-strength support structure according to claim 1, wherein: the supporting structure (4) is axially arranged two layers along the inner tank body (1), each layer of the supporting structure (4) is provided with six layers, and every two adjacent layers of the supporting structure (4) are 60 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911377259.7A CN110985878A (en) | 2019-12-27 | 2019-12-27 | LNG storage tank adopting high-strength supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911377259.7A CN110985878A (en) | 2019-12-27 | 2019-12-27 | LNG storage tank adopting high-strength supporting structure |
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| Publication Number | Publication Date |
|---|---|
| CN110985878A true CN110985878A (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911377259.7A Pending CN110985878A (en) | 2019-12-27 | 2019-12-27 | LNG storage tank adopting high-strength supporting structure |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201177156Y (en) * | 2007-12-17 | 2009-01-07 | 辽河石油勘探局 | Liquefied natural gas cistern car storage tank inner supporting structure |
| CN201661777U (en) * | 2010-03-08 | 2010-12-01 | 天津市雪琰管业有限公司 | High pressure glass fiber reinforced plastics-stainless steel composite pipe |
| CN101915356A (en) * | 2010-08-13 | 2010-12-15 | 孙加成 | LNG storage tank for diesel-LNG hybrid power ship |
| CN203442480U (en) * | 2013-08-30 | 2014-02-19 | 江西制氧机有限公司 | Inner container support for vertical vacuum heat insulation cryogenic pressure container |
| CN206072745U (en) * | 2016-08-26 | 2017-04-05 | 新兴能源装备股份有限公司 | The interlayer supporting construction of vacuum insulation double-jacket container |
| CN110318483A (en) * | 2019-06-27 | 2019-10-11 | 罗志康 | A kind of precast concrete sandwich wall with ribbing |
| CN211649799U (en) * | 2019-12-27 | 2020-10-09 | 苏州致邦能源装备有限公司 | LNG storage tank adopting high-strength supporting structure |
-
2019
- 2019-12-27 CN CN201911377259.7A patent/CN110985878A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201177156Y (en) * | 2007-12-17 | 2009-01-07 | 辽河石油勘探局 | Liquefied natural gas cistern car storage tank inner supporting structure |
| CN201661777U (en) * | 2010-03-08 | 2010-12-01 | 天津市雪琰管业有限公司 | High pressure glass fiber reinforced plastics-stainless steel composite pipe |
| CN101915356A (en) * | 2010-08-13 | 2010-12-15 | 孙加成 | LNG storage tank for diesel-LNG hybrid power ship |
| CN203442480U (en) * | 2013-08-30 | 2014-02-19 | 江西制氧机有限公司 | Inner container support for vertical vacuum heat insulation cryogenic pressure container |
| CN206072745U (en) * | 2016-08-26 | 2017-04-05 | 新兴能源装备股份有限公司 | The interlayer supporting construction of vacuum insulation double-jacket container |
| CN110318483A (en) * | 2019-06-27 | 2019-10-11 | 罗志康 | A kind of precast concrete sandwich wall with ribbing |
| CN211649799U (en) * | 2019-12-27 | 2020-10-09 | 苏州致邦能源装备有限公司 | LNG storage tank adopting high-strength supporting structure |
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