CN112555672A - Manufacturing process of ultra-large low-temperature liquid-filled insulating layer - Google Patents
Manufacturing process of ultra-large low-temperature liquid-filled insulating layer Download PDFInfo
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- CN112555672A CN112555672A CN202011462644.4A CN202011462644A CN112555672A CN 112555672 A CN112555672 A CN 112555672A CN 202011462644 A CN202011462644 A CN 202011462644A CN 112555672 A CN112555672 A CN 112555672A
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- Prior art keywords
- layer
- foam
- spraying
- thickness
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- F17C3/00—Vessels not under pressure
- F17C3/02—Vessels not under pressure 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
- F17C3/00—Vessels not under pressure
- F17C3/02—Vessels not under pressure with provision for thermal insulation
- F17C3/04—Vessels not under pressure with provision for thermal insulation by insulating layers
-
- 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
- F17C2203/0325—Aerogel
-
- 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
- F17C2203/0329—Foam
-
- 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
- F17C2203/0345—Fibres
- F17C2203/035—Glass wool
-
- 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
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/23—Manufacturing of particular parts or at special locations
- F17C2209/238—Filling of insulants
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a manufacturing process of an ultra-large low-temperature liquid-filled insulating layer, which comprises the following steps: A. firstly, cleaning the surface of a tank body; B. then, priming spraying is carried out on the surface of the tank body; C. then spraying a first layer of foam; D. then installing a first layer of glass mesh on the first layer of foam; E. spraying a second layer of foam on the outer surface of the first layer of glass layer; F. then installing aerogel/rock wool; G. spraying a third layer of foam; H. installing a second layer of glass mesh outside the third foam; I. spraying a fourth layer of foam outside the second layer of glass mesh; J. and finally, spraying polyurea outside the fourth layer of foam to finish the manufacture of the insulating layer.
Description
Technical Field
The invention relates to the technical field of manufacturing of liquid-filled insulating layers, in particular to a manufacturing process of an ultra-large low-temperature liquid-filled insulating layer.
Background
After the liquid tank is loaded, foams on the outer wall of the tank body shrink due to cold, insulation is prone to cracking, and the service life of the liquid tank is affected, so that improvement on the existing insulation layer is needed.
Disclosure of Invention
The invention aims to provide a manufacturing process of an ultra-large low-temperature liquid-filled insulating layer, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a manufacturing process of an ultra-large low-temperature liquid-filled insulating layer comprises the following steps:
A. firstly, cleaning the surface of a tank body;
B. then, priming spraying is carried out on the surface of the tank body;
C. then spraying a first layer of foam;
D. then installing a first layer of glass mesh on the first layer of foam;
E. spraying a second layer of foam on the outer surface of the first layer of glass layer;
F. then installing aerogel/rock wool;
G. spraying a third layer of foam;
H. installing a second layer of glass mesh outside the third foam;
I. spraying a fourth layer of foam outside the second layer of glass mesh;
J. and finally, spraying polyurea outside the fourth layer of foam to finish the manufacture of the insulating layer.
Preferably, the content of the first layer of foam, the second layer of foam, the third layer of foam and the fourth layer of foam is consistent, and the components comprise, by weight, 30-40 parts of resilient polyurethane polyether, 10-20 parts of toluene diisocyanate, 4-12 parts of propylene oxide, 3-9 parts of m-pentadecylphenol and 2-6 parts of diethanolamine.
Preferably, the first layer foam has a thickness of 50mm to 60 mm; the thickness of the second layer of foam is 30mm-40 mm; the thickness of the third layer of foam is 120mm-130 mm; the thickness of the fourth layer of foam is 150mm-160 mm.
Preferably, the aerogel/rock wool installation method in the step F is as follows:
a. after grooving the surface of the foam, putting the aerogel into the groove, and then performing injection molding on the foam for bonding;
b. the rest of the aerogel/rock wool was bonded with spray foam.
Preferably, the thickness of the polyurea in the step J is 4mm-6 mm.
Compared with the prior art, the invention has the beneficial effects that: the invention has simple manufacturing process, can reduce the cracking risk and keep the stability of the insulation system; the four-layer foam sprayed by the method has excellent mechanical properties, and can improve the overall toughness and strength of the insulating layer.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
the invention provides the following technical scheme: a manufacturing process of an ultra-large low-temperature liquid-filled insulating layer comprises the following steps:
A. firstly, cleaning the surface of a tank body;
B. then, priming spraying is carried out on the surface of the tank body;
C. then spraying a first layer of foam;
D. then installing a first layer of glass mesh on the first layer of foam;
E. spraying a second layer of foam on the outer surface of the first layer of glass layer;
F. then installing aerogel/rock wool;
G. spraying a third layer of foam;
H. installing a second layer of glass mesh outside the third foam;
I. spraying a fourth layer of foam outside the second layer of glass mesh;
J. and finally, spraying polyurea outside the fourth layer of foam to finish the manufacture of the insulating layer.
In this embodiment, the content of the first layer of foam, the second layer of foam, the third layer of foam, and the fourth layer of foam is consistent, and the components include, by weight, 30 parts of resilient polyurethane polyether, 10 parts of toluene diisocyanate, 4 parts of propylene oxide, 3 parts of m-pentadecylphenol, and 2 parts of diethanolamine.
In this example, the first layer foam thickness was 50 mm; the second layer foam thickness was 30 mm; the thickness of the third layer of foam is 120 mm; the fourth layer foam had a thickness of 150 mm.
In this embodiment, the aerogel/rock wool installation method in step F is as follows:
a. after grooving the surface of the foam, putting the aerogel into the groove, and then performing injection molding on the foam for bonding;
b. the rest of the aerogel/rock wool was bonded with spray foam.
In this example, the thickness of the polyurea in step J was 4 mm.
Example two:
a manufacturing process of an ultra-large low-temperature liquid-filled insulating layer comprises the following steps:
A. firstly, cleaning the surface of a tank body;
B. then, priming spraying is carried out on the surface of the tank body;
C. then spraying a first layer of foam;
D. then installing a first layer of glass mesh on the first layer of foam;
E. spraying a second layer of foam on the outer surface of the first layer of glass layer;
F. then installing aerogel/rock wool;
G. spraying a third layer of foam;
H. installing a second layer of glass mesh outside the third foam;
I. spraying a fourth layer of foam outside the second layer of glass mesh;
J. and finally, spraying polyurea outside the fourth layer of foam to finish the manufacture of the insulating layer.
In this embodiment, the content of the first layer of foam, the second layer of foam, the third layer of foam, and the fourth layer of foam is consistent, and the components include, by weight, 40 parts of resilient polyurethane polyether, 20 parts of toluene diisocyanate, 12 parts of propylene oxide, 9 parts of m-pentadecylphenol, and 6 parts of diethanolamine.
In this example, the first layer foam thickness was 60 mm; the second layer of foam has a thickness of 40 mm; the third layer foam thickness is 130 mm; the fourth layer foam had a thickness of 160 mm.
In this embodiment, the aerogel/rock wool installation method in step F is as follows:
a. after grooving the surface of the foam, putting the aerogel into the groove, and then performing injection molding on the foam for bonding;
b. the rest of the aerogel/rock wool was bonded with spray foam.
In this example, the thickness of the polyurea in step J was 6 mm.
Example three:
a manufacturing process of an ultra-large low-temperature liquid-filled insulating layer comprises the following steps:
A. firstly, cleaning the surface of a tank body;
B. then, priming spraying is carried out on the surface of the tank body;
C. then spraying a first layer of foam;
D. then installing a first layer of glass mesh on the first layer of foam;
E. spraying a second layer of foam on the outer surface of the first layer of glass layer;
F. then installing aerogel/rock wool;
G. spraying a third layer of foam;
H. installing a second layer of glass mesh outside the third foam;
I. spraying a fourth layer of foam outside the second layer of glass mesh;
J. and finally, spraying polyurea outside the fourth layer of foam to finish the manufacture of the insulating layer.
In this embodiment, the content of the first layer of foam, the second layer of foam, the third layer of foam, and the fourth layer of foam is consistent, and the components include, by weight, 32 parts of resilient polyurethane polyether, 12 parts of toluene diisocyanate, 5 parts of propylene oxide, 4 parts of m-pentadecylphenol, and 3 parts of diethanolamine.
In this example, the first layer foam thickness was 52 mm; the second layer foam thickness was 32 mm; the third layer foam thickness is 122 mm; the fourth layer foam had a thickness of 152 mm.
In this embodiment, the aerogel/rock wool installation method in step F is as follows:
a. after grooving the surface of the foam, putting the aerogel into the groove, and then performing injection molding on the foam for bonding;
b. the rest of the aerogel/rock wool was bonded with spray foam.
In this example, the thickness of the polyurea in step J was 4 mm.
Example four:
a manufacturing process of an ultra-large low-temperature liquid-filled insulating layer comprises the following steps:
A. firstly, cleaning the surface of a tank body;
B. then, priming spraying is carried out on the surface of the tank body;
C. then spraying a first layer of foam;
D. then installing a first layer of glass mesh on the first layer of foam;
E. spraying a second layer of foam on the outer surface of the first layer of glass layer;
F. then installing aerogel/rock wool;
G. spraying a third layer of foam;
H. installing a second layer of glass mesh outside the third foam;
I. spraying a fourth layer of foam outside the second layer of glass mesh;
J. and finally, spraying polyurea outside the fourth layer of foam to finish the manufacture of the insulating layer.
In this embodiment, the content of the first layer of foam, the second layer of foam, the third layer of foam, and the fourth layer of foam is consistent, and the components include, by weight, 38 parts of resilient polyurethane polyether, 18 parts of toluene diisocyanate, 10 parts of propylene oxide, 8 parts of m-pentadecylphenol, and 5 parts of diethanolamine.
In this example, the first layer foam thickness was 58 mm; the second layer foam thickness was 38 mm; the third layer had a foam thickness of 128 mm; the fourth layer foam had a thickness of 158 mm.
In this embodiment, the aerogel/rock wool installation method in step F is as follows:
a. after grooving the surface of the foam, putting the aerogel into the groove, and then performing injection molding on the foam for bonding;
b. the rest of the aerogel/rock wool was bonded with spray foam.
In this example, the thickness of the polyurea in step J was 6 mm.
Example five:
a manufacturing process of an ultra-large low-temperature liquid-filled insulating layer comprises the following steps:
A. firstly, cleaning the surface of a tank body;
B. then, priming spraying is carried out on the surface of the tank body;
C. then spraying a first layer of foam;
D. then installing a first layer of glass mesh on the first layer of foam;
E. spraying a second layer of foam on the outer surface of the first layer of glass layer;
F. then installing aerogel/rock wool;
G. spraying a third layer of foam;
H. installing a second layer of glass mesh outside the third foam;
I. spraying a fourth layer of foam outside the second layer of glass mesh;
J. and finally, spraying polyurea outside the fourth layer of foam to finish the manufacture of the insulating layer.
In this embodiment, the content of the first layer of foam, the second layer of foam, the third layer of foam, and the fourth layer of foam is consistent, and the components include, by weight, 35 parts of resilient polyurethane polyether, 15 parts of toluene diisocyanate, 8 parts of propylene oxide, 6 parts of m-pentadecylphenol, and 4 parts of diethanolamine.
In this example, the first layer foam thickness was 55 mm; the second layer of foam has a thickness of 35 mm; the third layer foam thickness was 125 mm; the fourth layer foam thickness was 155 mm.
In this embodiment, the aerogel/rock wool installation method in step F is as follows:
a. after grooving the surface of the foam, putting the aerogel into the groove, and then performing injection molding on the foam for bonding;
b. the rest of the aerogel/rock wool was bonded with spray foam.
In this example, the thickness of the polyurea in step J was 5 mm.
The insulation layers manufactured by the embodiments of the present invention were subjected to a compression test, and the data obtained are as follows:
the invention has simple manufacturing process, can reduce the cracking risk and keep the stability of the insulation system; the four-layer foam sprayed by the method has excellent mechanical properties, and can improve the overall toughness and strength of the insulating layer.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A manufacturing process of an ultra-large low-temperature liquid-filled insulating layer is characterized by comprising the following steps: the method comprises the following steps:
A. firstly, cleaning the surface of a tank body;
B. then, priming spraying is carried out on the surface of the tank body;
C. then spraying a first layer of foam;
D. then installing a first layer of glass mesh on the first layer of foam;
E. spraying a second layer of foam on the outer surface of the first layer of glass layer;
F. then installing aerogel/rock wool;
G. spraying a third layer of foam;
H. installing a second layer of glass mesh outside the third foam;
I. spraying a fourth layer of foam outside the second layer of glass mesh;
J. and finally, spraying polyurea outside the fourth layer of foam to finish the manufacture of the insulating layer.
2. The manufacturing process of the ultra-large low-temperature liquid-filled insulating layer according to claim 1, characterized in that: the first layer of foam, the second layer of foam, the third layer of foam and the fourth layer of foam are consistent in content, and the components comprise, by weight, 30-40 parts of rebound polyurethane polyether, 10-20 parts of toluene diisocyanate, 4-12 parts of propylene oxide, 3-9 parts of m-pentadecylphenol and 2-6 parts of diethanolamine.
3. The manufacturing process of the ultra-large low-temperature liquid-filled insulating layer according to claim 1, characterized in that: the first layer of foam has a thickness of 50mm to 60 mm; the thickness of the second layer of foam is 30mm-40 mm; the thickness of the third layer of foam is 120mm-130 mm; the thickness of the fourth layer of foam is 150mm-160 mm.
4. The manufacturing process of the ultra-large low-temperature liquid-filled insulating layer according to claim 1, characterized in that: the aerogel/rock wool installation method in the step F is as follows:
a. after grooving the surface of the foam, putting the aerogel into the groove, and then performing injection molding on the foam for bonding;
b. the rest of the aerogel/rock wool was bonded with spray foam.
5. The manufacturing process of the ultra-large low-temperature liquid-filled insulating layer according to claim 1, characterized in that: and the thickness of the polyurea in the step J is 4mm-6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011462644.4A CN112555672A (en) | 2020-12-11 | 2020-12-11 | Manufacturing process of ultra-large low-temperature liquid-filled insulating layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011462644.4A CN112555672A (en) | 2020-12-11 | 2020-12-11 | Manufacturing process of ultra-large low-temperature liquid-filled insulating layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112555672A true CN112555672A (en) | 2021-03-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011462644.4A Withdrawn CN112555672A (en) | 2020-12-11 | 2020-12-11 | Manufacturing process of ultra-large low-temperature liquid-filled insulating layer |
Country Status (1)
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| CN (1) | CN112555672A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106870879A (en) * | 2017-03-29 | 2017-06-20 | 中国海洋石油总公司 | The thermal insulation construction technology of liquefied petroleum natural gas in low temperature transfer pipeline |
| CN106949341A (en) * | 2017-04-24 | 2017-07-14 | 海洋石油工程（青岛）有限公司 | The heat preservation construction technique of liquefied natural gas (LNG) plant restricted clearance |
| CN106969257A (en) * | 2017-04-12 | 2017-07-21 | 酷泰克保温科技江苏有限公司 | A kind of construction technology of LNG storage tank heat-insulation system |
| CN107420736A (en) * | 2017-08-02 | 2017-12-01 | 酷泰克保温科技江苏有限公司 | A kind of cryogenic storage tank fire lagging |
| CN107504324A (en) * | 2017-08-02 | 2017-12-22 | 酷泰克保温科技江苏有限公司 | A kind of construction technology of the insulation heat preservation layer of deep cooling pipeline connecting device |
| CN206887982U (en) * | 2017-03-24 | 2018-01-16 | 东方电气集团东方锅炉股份有限公司 | A kind of solar energy high temperature fused salt storage tank basis heat insulation structural |
| CN211649803U (en) * | 2019-12-30 | 2020-10-09 | 苏州致邦能源装备有限公司 | LNG storage tank with high cold insulation |
-
2020
- 2020-12-11 CN CN202011462644.4A patent/CN112555672A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206887982U (en) * | 2017-03-24 | 2018-01-16 | 东方电气集团东方锅炉股份有限公司 | A kind of solar energy high temperature fused salt storage tank basis heat insulation structural |
| CN106870879A (en) * | 2017-03-29 | 2017-06-20 | 中国海洋石油总公司 | The thermal insulation construction technology of liquefied petroleum natural gas in low temperature transfer pipeline |
| CN106969257A (en) * | 2017-04-12 | 2017-07-21 | 酷泰克保温科技江苏有限公司 | A kind of construction technology of LNG storage tank heat-insulation system |
| CN106949341A (en) * | 2017-04-24 | 2017-07-14 | 海洋石油工程（青岛）有限公司 | The heat preservation construction technique of liquefied natural gas (LNG) plant restricted clearance |
| CN107420736A (en) * | 2017-08-02 | 2017-12-01 | 酷泰克保温科技江苏有限公司 | A kind of cryogenic storage tank fire lagging |
| CN107504324A (en) * | 2017-08-02 | 2017-12-22 | 酷泰克保温科技江苏有限公司 | A kind of construction technology of the insulation heat preservation layer of deep cooling pipeline connecting device |
| CN211649803U (en) * | 2019-12-30 | 2020-10-09 | 苏州致邦能源装备有限公司 | LNG storage tank with high cold insulation |
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Application publication date: 20210326 |