CN110985879A - Low temperature is anchor board for storage device - Google Patents
Low temperature is anchor board for storage device Download PDFInfo
- Publication number
- CN110985879A CN110985879A CN201911409686.9A CN201911409686A CN110985879A CN 110985879 A CN110985879 A CN 110985879A CN 201911409686 A CN201911409686 A CN 201911409686A CN 110985879 A CN110985879 A CN 110985879A
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- Prior art keywords
- heat insulation
- layer
- tank
- plate
- storage device
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Classifications
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- 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
- F17C1/08—Integral reinforcements, e.g. ribs
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- 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
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- 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
- F17C2203/012—Reinforcing means on or in the wall, e.g. ribs
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- 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
- F17C2203/0304—Thermal insulations by solid means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
An anchoring plate for a low-temperature storage device comprises a metal inner tank, an inner heat insulation structure layer, an outer tank and a suspended ceiling, wherein the anchoring plate is a double-layer heat insulation structure formed by fixedly connecting an inner heat insulation layer and an outer heat insulation layer, and the inner heat insulation layer is embedded into the adjacent inner heat insulation structure layer; the outer heat insulation layer is closely spliced with the adjacent outer heat insulation structure layer; the inner side of the inner heat insulation layer is connected with the metal inner tank; the outer side of the outer heat insulation layer is connected with the tank wall and the tank bottom of the outer tank; a leakage protection structure is clamped between the inner and outer heat insulation layers. Compared with the traditional metal inner tank, the secondary bottom plate and the hot corner protection, the low-temperature storage device provided by the invention has the advantages that the anchoring plate is adopted, the material is greatly saved, the manufacturing cost can be saved by more than 10%, and the using effect and the safety are obviously improved. And the whole system unit can be processed in a factory modularization mode, field splicing is carried out, and the construction efficiency is extremely high.
Description
Technical Field
The invention relates to an anchoring plate for a low-temperature storage device.
Background
The investment of the LNG storage tank is higher in both a natural gas liquefaction plant and an LNG receiving terminal, especially in the LNG receiving terminal, the investment of the storage tank accounts for about 30-40% of the total investment, and the LNG storage tank is a very important component in the whole LNG industry chain.
The LNG storage tank is used for storing ultralow-temperature LNG (liquefied natural gas) liquid at the temperature of 162 ℃ below zero, and in order to enable the liquid in the storage tank to be in an ultralow-temperature state, heat insulation materials are arranged on the tank wall, the tank bottom and the tank top of the storage tank. Due to the outer rib structure of the inner tank of the novel self-supporting LNG storage tank composite structure, the traditional insulation scheme of the inner side elastic felt and the outer side expanded perlite tank wall has the problems of loose materials, settlement deformation, unstable long-term insulation performance, short service life and the like.
The existing storage tank is mainly a single-capacity tank, a double-capacity tank and a full-capacity tank:
the single-vessel tank is usually a vertical flat-bottomed cylindrical storage tank, and consists of an inner tank and an outer tank. The inner tank material is low temperature resistant stainless steel for store microthermal LNG, outer jar generally by the carbon steel preparation, the insulating layer of work is maintained at the inner tank low temperature to mainly used fixed and protection, nevertheless can not hold LNG. When the storage tank is in accident and the inner tank storing LNG is leaked, LNG damages the outer tank and spreads to a larger area, thus causing larger harm. Therefore, the single-container tank is required to be provided with the cofferdam, and the single-container tank needs a larger safety protection interval and occupies a larger area in the engineering design according to the standard requirement. The bottom and the side wall of the storage tank are provided with connecting pipes, so that the hidden danger of gas and liquid leakage is easily caused by the lack of construction quality in the engineering construction. In contrast, the leakage probability is high, the strength is low, and the safety performance is poor. Single-tank tanks have been used less frequently in large LNG production plants in recent years due to their lower safety than other types of tanks.
The design pressure of the storage tank of the double-container tank is the same as that of the single-container tank (both are lower), and a return gas compressor is also required to be arranged. The investment of the double-container tank is slightly higher than that of the single-container tank, about 110 percent of that of the single-container tank, and the construction period is slightly longer than that of the single-container tank.
Compared with a full-capacity tank, the double-capacity tank has about the same investment and delivery cycle, but the safety level is lower, and the existing storage tank is designed to be old and not selected. In addition, although the full-capacity tank has good safety and small occupied area, the structure is complex, the construction period is long, and the construction cost is high.
The conventional large-scale low-temperature storage tank is composed of a metal inner tank, a concrete outer tank and a heat insulation layer between the inner tank and the outer tank. The bottom of the tank body is sequentially composed of a concrete outer tank metal bottom plate, a concrete layer, a foam glass layer, a concrete layer, a secondary bottom plate, a prestressed concrete layer and an inner tank metal bottom plate from bottom to top; the tank wall part sequentially comprises structures such as a concrete outer tank, an outer tank metal lining plate, a foam glass layer, a thermal angle protection wall plate, a perlite heat preservation layer, an elastic felt heat preservation layer and a metal inner tank from outside to inside, the whole structure is very complex, the installation and construction process is complicated and has high requirements, and each step of construction must be completed on site sequentially, so that the site construction quality requirement is high, the quality control is difficult, and the construction period is long. A secondary bottom plate is arranged between the metal inner tank and the outer tank bottom plate at the bottom of the tank body, a thermal angle protection is arranged between the metal inner tank and the outer tank at the tank wall part, the metal inner tank, the secondary bottom plate and the thermal angle protection are generally made of low-temperature steel with the thickness of 1-2 cm, the manufacturing cost is very high, and the construction welding requirement is very high. The whole inner tank and the secondary bottom plate are flat, and the hot corner protection, the metal outer tank and the secondary bottom plate are welded into a sealed whole. Take a 16 ten thousand cubic LNG storage tank as an example, its inner tank diameter is 80 meters more, when driving, can have nearly 200 ℃ temperature variation, and different structural layers all can produce the shrink of different degree, and the inner tank has the shrink of about 25 centimetres, and the inner tank is a smooth whole, and the shrink can produce the displacement between the different layers, and the effort each other is very big, in case cause the destruction, will exert an influence to the heat preservation effect, causes the running cost height, can have the safety problem even.
Disclosure of Invention
In order to overcome the defects of complex structure, complex installation and construction process, extremely high requirement and higher cost of the existing large-scale low-temperature storage tank, the invention provides the anchoring plate for the low-temperature storage device, which has the advantages of simplified structure, simpler and more convenient installation and construction process and lower cost.
The technical scheme adopted by the invention for solving the technical problems is as follows:
an anchoring plate for a low-temperature storage device comprises a metal inner tank, an inner heat insulation structure layer, an outer tank and a suspended ceiling, wherein the anchoring plate is a double-layer heat insulation structure formed by fixedly connecting an inner heat insulation layer and an outer heat insulation layer, and the inner heat insulation layer is embedded into the adjacent inner heat insulation structure layer; the outer heat insulation layer is closely spliced with the adjacent outer heat insulation structure layer; the inner side of the inner heat insulation layer is connected with the metal inner tank; the outer side of the outer heat insulation layer is connected with the tank wall and the tank bottom of the outer tank; a leakage protection structure is clamped between the inner and outer heat insulation layers.
The leakage protection structure is a low-temperature-resistant airtight whole formed by hermetically connecting the secondary shielding layer and the first protection plate.
Or the leakage protection structure is a layer of low-temperature-resistant metal plate.
The inner heat insulation layer is formed by overlapping and connecting a second protection plate, a heat insulation material and a third protection plate, the second protection plate is fixedly connected with the metal inner tank through a metal fixing piece, and the metal fixing piece extends to the adjacent inner heat insulation structure layer to the periphery; the outer heat insulation layer is fixed on the bottom and the wall of the tank body through anchoring parts or adhesives.
The thickness of inside and outside heat insulation layer is unanimous with corresponding inside and outside insulation structure layer thickness, the size of outer heat insulation layer is greater than inside heat insulation layer, and outside insulation structure layer size is less than inside insulation structure layer to form the staggered joint structure when making insulation structure layer and the close seam concatenation of anchor board.
The surface of the second protective plate is of an inwards concave cross-shaped structure, the metal fixing piece is of a cross shape, and the metal fixing piece is correspondingly embedded into the groove of the second protective plate and extends towards the inner heat insulation structure layer; the metal fixing piece is made of low-temperature-resistant metal materials, the second protection plate is made of fireproof and heat-insulating materials, or the fireproof and heat-insulating materials are filled and fixed on the part of the second protection plate, and are located right below the metal inner tank welding seam in contact with the fireproof and heat-insulating materials.
The outer heat insulation layer is composed of a fourth protection plate and a heat insulation material, and the fourth protection plate is a high-strength plate.
The outer heat-insulating layer, the leakage protection structure and the inner heat-insulating layer are bonded through an adhesive, and the rigid connecting piece penetrates through the fastening and bonding or the fastening and bonding combination.
Further, outer heat insulation layer, seepage protective structure and interior heat insulation layer run through the fastening through rigid connection spare and cohere, rigid connection spare's space adopts soft heat preservation stick crack to fill.
The invention has the following beneficial effects: low temperature storage device adopts this anchor board, compares in traditional metal inner tank, secondary bottom plate and hot angle protection, the great saving of material, and manufacturing cost can practice thrift more than 10%, and result of use and security obviously promote. And the whole system unit can be processed in a factory modularization mode, field splicing is carried out, and the construction efficiency is extremely high.
Drawings
Fig. 1 is a schematic structural view of a low temperature storage device.
Fig. 2 is a structural view at a of fig. 1.
Fig. 3 is a structural view at B of fig. 1.
FIG. 4 is a schematic view of an anchorage plate of the present invention;
FIG. 5 is an exploded view of the anchor plate of the present invention.
Wherein, 1 is outer jar, 2 is the dome, 3 is the furred ceiling, 4 are top heat preservation, 5 are outer insulation structure layer, 6 are interior insulation structure layer, 7 are secondary shielding layer, 8 are the metallic film inner tank, 9 are the anchor board, 10 are the tank bottoms, 11 are the tank wall.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Referring to fig. 1 to 5, an anchoring plate for a low-temperature storage device comprises a metal inner tank, an inner heat insulation structure layer, an outer tank and a suspended ceiling, wherein the anchoring plate is a double-layer heat insulation structure formed by fixedly connecting an inner heat insulation layer and an outer heat insulation layer, and the inner heat insulation layer is embedded into the adjacent inner heat insulation structure layer; the outer heat insulation layer is closely spliced with the adjacent outer heat insulation structure layer; the inner side of the inner heat insulation layer is connected with the metal inner tank; the outer side of the outer heat insulation layer is connected with the tank wall and the tank bottom of the outer tank; a leakage protection structure 37 is sandwiched between the inner and outer insulating layers. The leakage protection structure is a low-temperature-resistant airtight whole formed by hermetically connecting the secondary shielding layer and the first protection plate. The inner heat insulation layer is formed by overlapping and connecting a second protection plate 33, a heat insulation material 31 and a third protection plate 7, the second protection plate is fixedly connected with the metal inner tank through a metal fixing piece 35 and a screw 34, and the metal fixing piece extends to the adjacent inner heat insulation structure layer towards the periphery; the outer heat insulation layer is fixed on the bottom and the wall of the tank body through anchoring parts or adhesives. The thickness of inside and outside heat insulation layer is unanimous with corresponding inside and outside insulation structure layer thickness, the size of outer heat insulation layer is greater than inside heat insulation layer, and outside insulation structure layer size is less than inside insulation structure layer to form the staggered joint structure when making insulation structure layer and the close seam concatenation of anchor board. The surface of the second protection plate 33 is of a concave cross-shaped structure, the metal fixing piece is of a cross shape, and the metal fixing piece is correspondingly embedded into the groove of the second protection plate and extends towards the inner heat insulation structure layer; the metal fixing piece is made of low-temperature-resistant metal materials, the second protection plate is made of fireproof and heat-insulating materials, or the fireproof and heat-insulating materials are filled and fixed on the part of the second protection plate, and are located right below the metal inner tank welding seam in contact with the fireproof and heat-insulating materials.
The outer insulating layer is composed of a fourth protective plate 36, which is a high-strength plate, and an insulating material 32. The outer heat insulation layer, the leakage protection structure and the inner heat insulation layer are penetrated, fastened and bonded through a rigid connecting piece, and the gap of the rigid connecting piece is filled with a soft heat insulation rod 38 tight seam.
The invention thoroughly changes the structure and the installation and fixation mode of the existing low-temperature storage tank, only needs the metal inner tank with the thickness of 1-2 mm, directly cancels the secondary bottom plate and the hot angle protection steel plate, and adopts the secondary shielding layer with a composite film structure to protect leakage. By adopting the low-temperature metal film with longitudinal and transverse folds, the metal film can change the size change in a plane through the size change of the longitudinal and transverse folds in a temperature change range from normal temperature to-196 ℃ through stress analysis and fatigue experiments.
Compared with the traditional metal inner tank, the secondary bottom plate and the hot corner protection, the scheme of the embodiment has the advantages that the material is greatly saved, the manufacturing cost can be saved by more than 10%, and the using effect and the safety are obviously improved. And the whole system unit can be processed in a factory modularization mode, field splicing is carried out, and the construction efficiency is extremely high.
The embodiments described in this specification are merely illustrative of implementations of the inventive concepts, which are intended for purposes of illustration only. The scope of the present invention should not be construed as being limited to the particular forms set forth in the examples, but rather as being defined by the claims and the equivalents thereof which can occur to those skilled in the art upon consideration of the present inventive concept.
Claims (9)
1. The utility model provides a low temperature is anchor plate for storage device, low temperature storage device is including metal inner tank, interior insulation construction layer, outer jar and furred ceiling, its characterized in that: the anchoring plate is a double-layer heat insulation structure formed by fixedly connecting an inner heat insulation layer and an outer heat insulation layer, and the inner heat insulation layer is embedded into an adjacent inner heat insulation structure layer; the outer heat insulation layer is closely spliced with the adjacent outer heat insulation structure layer; the inner side of the inner heat insulation layer is connected with the metal inner tank; the outer side of the outer heat insulation layer is connected with the tank wall and the tank bottom of the outer tank; a leakage protection structure is clamped between the inner and outer heat insulation layers.
2. An anchorage plate for a cryogenic storage device according to claim 1, wherein: the leakage protection structure is a low-temperature-resistant airtight whole formed by hermetically connecting the secondary shielding layer and the first protection plate.
3. An anchorage plate for a cryogenic storage device according to claim 1, wherein: the leakage protection structure is a layer of low temperature resistant metal plate.
4. An anchorage plate for a cryogenic storage device according to claim 2, wherein: the inner heat insulation layer is formed by overlapping and connecting a second protection plate, a heat insulation material and a third protection plate, the second protection plate is fixedly connected with the metal inner tank through a metal fixing piece, and the metal fixing piece extends to the adjacent inner heat insulation structure layer to the periphery; the outer heat insulation layer is fixed on the bottom and the wall of the tank body through anchoring parts or adhesives.
5. The anchoring plate for a cryogenic storage device of claim 4, wherein the thickness of the inner and outer insulating layers is the same as the thickness of the corresponding inner and outer insulating structure layers, the size of the outer insulating layer is larger than that of the inner insulating layer, and the size of the outer insulating structure layer is smaller than that of the inner insulating structure layer, so that a staggered joint structure is formed when the insulating structure layers and the anchoring plate are jointed in a close joint manner.
6. The anchoring plate for a cryogenic storage device according to claim 5, wherein the surface of the second protection plate 33 is a concave cross-shaped structure, the metal fixing member is a cross-shaped structure, and the metal fixing member is correspondingly embedded in the groove of the second protection plate and extends towards the inner insulation structure layer; the metal fixing piece is made of low-temperature-resistant metal materials, the second protection plate is made of fireproof and heat-insulating materials, or the fireproof and heat-insulating materials are filled and fixed on the part of the second protection plate, and are located right below the metal inner tank welding seam in contact with the fireproof and heat-insulating materials.
7. The anchor plate for a low-temperature storage device according to claim 6, wherein the outer heat insulating layer is composed of a fourth protective plate and a heat insulating material, and the fourth protective plate is a high-strength plate.
8. The anchorage plate for cryogenic storage device of claim 7, wherein the outer insulating layer, the leakage prevention structure and the inner insulating layer are made by adhesive bonding, rigid connector through fastening bonding or a combination of fastening and bonding.
9. The anchoring plate for a cryogenic storage device according to claim 7, wherein the outer insulating layer, the leakage prevention structure and the inner insulating layer are fastened and bonded through a rigid connector, and the gap of the rigid connector is filled with a soft insulating rod through-seam.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911409686.9A CN110985879A (en) | 2019-12-31 | 2019-12-31 | Low temperature is anchor board for storage device |
| PCT/CN2020/136328 WO2021135916A1 (en) | 2019-12-31 | 2020-12-15 | Anchoring plate for low-temperature storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911409686.9A CN110985879A (en) | 2019-12-31 | 2019-12-31 | Low temperature is anchor board for storage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110985879A true CN110985879A (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911409686.9A Pending CN110985879A (en) | 2019-12-31 | 2019-12-31 | Low temperature is anchor board for storage device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110985879A (en) |
| WO (1) | WO2021135916A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021135917A1 (en) * | 2019-12-31 | 2021-07-08 | 浙江振申绝热科技股份有限公司 | Low-temperature storage device and installation method therefor |
| WO2021135916A1 (en) * | 2019-12-31 | 2021-07-08 | 浙江振申绝热科技股份有限公司 | Anchoring plate for low-temperature storage device |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2480663Y (en) * | 2001-05-23 | 2002-03-06 | 深圳市海川实业股份有限公司 | Seal for low-temp. LPG storage and conveyance |
| KR100649316B1 (en) * | 2006-09-01 | 2006-11-24 | 한국가스공사 | Anchor structure of lng storage tank |
| KR101215599B1 (en) * | 2010-10-28 | 2012-12-26 | 삼성중공업 주식회사 | Self-supporting cargo tank for liquefied natural gas and liquefied natural gas ship having the same |
| CN104295885B (en) * | 2014-09-30 | 2016-01-13 | 中国海洋石油总公司 | Be applicable to the tank skin heat-insulation system of novel LNG storage tank |
| FR3042253B1 (en) * | 2015-10-13 | 2018-05-18 | Gaztransport Et Technigaz | SEALED AND THERMALLY INSULATED TANK |
| KR102014718B1 (en) * | 2017-09-21 | 2019-08-27 | 정태영 | Cargo of liquefied petroleum gas carrier and high-performance insulation and structural components thereof |
| CN208281794U (en) * | 2018-05-31 | 2018-12-25 | 佛山科学技术学院 | A kind of LNG storage tank |
| CN211544655U (en) * | 2019-12-31 | 2020-09-22 | 浙江振申绝热科技股份有限公司 | Low-temperature storage device |
| CN110902178A (en) * | 2019-12-31 | 2020-03-24 | 浙江振申绝热科技股份有限公司 | Low-temperature storage device and installation method thereof |
| CN211551144U (en) * | 2019-12-31 | 2020-09-22 | 浙江振申绝热科技股份有限公司 | Low temperature is anchor board for storage device |
| CN110985879A (en) * | 2019-12-31 | 2020-04-10 | 浙江振申绝热科技股份有限公司 | Low temperature is anchor board for storage device |
-
2019
- 2019-12-31 CN CN201911409686.9A patent/CN110985879A/en active Pending
-
2020
- 2020-12-15 WO PCT/CN2020/136328 patent/WO2021135916A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021135917A1 (en) * | 2019-12-31 | 2021-07-08 | 浙江振申绝热科技股份有限公司 | Low-temperature storage device and installation method therefor |
| WO2021135916A1 (en) * | 2019-12-31 | 2021-07-08 | 浙江振申绝热科技股份有限公司 | Anchoring plate for low-temperature storage device |
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| Publication number | Publication date |
|---|---|
| WO2021135916A1 (en) | 2021-07-08 |
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