CN215361754U - C type LNG liquid cargo storage tank composite polyurethane heat insulation system - Google Patents
C type LNG liquid cargo storage tank composite polyurethane heat insulation system Download PDFInfo
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- CN215361754U CN215361754U CN202121676703.8U CN202121676703U CN215361754U CN 215361754 U CN215361754 U CN 215361754U CN 202121676703 U CN202121676703 U CN 202121676703U CN 215361754 U CN215361754 U CN 215361754U
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Abstract
The utility model provides a C-type LNG liquid cargo storage tank composite polyurethane heat insulation system, which comprises: the low-temperature medium tank comprises a low-temperature medium tank body, wherein a plurality of welding studs are arranged at the bottom below the central line of the low-temperature medium tank body, a plurality of wood screws are arranged in a prefabricated polyurethane foam board, one end of each wood screw is connected with the corresponding welding stud, a disc is arranged at the other end of each wood screw, a spraying polyurethane foam layer is arranged on the part above the central line of the low-temperature medium tank body and on the outer surface of the prefabricated polyurethane foam board, a nano aerogel felt is arranged on the outer surface of the spraying polyurethane foam layer, and a polyurea coating is arranged on the outer surface of the nano aerogel felt. As described above, the composite polyurethane heat insulation system for the C-type LNG liquid cargo storage tank, provided by the utility model, solves the heat insulation problem of the C-type liquid cargo tank in the prior art, is reasonable in design, and is suitable for production, popularization and application.
Description
Technical Field
The utility model relates to the technical field of liquefied natural gas ships, in particular to a C-type LNG liquid cargo storage tank composite polyurethane heat insulation system.
Background
Liquefied natural gas refers to a colorless, transparent, cryogenic liquid of 1/600 that cools natural gas, whose major component is methane, to about-163 ℃ and compresses to its gas volume. Is an important clean energy source. The liquefied natural gas ship is a main transport tool for marine transportation of liquefied natural gas, and is a ship with high technology, high difficulty and high added value.
The LNG ship is different from a general ship in that it is designed to primarily consider that its cargo is liquefied natural gas at-163 ℃. When the LNG ship sails, the temperature difference between LNG in the cargo hold and the outside temperature can reach more than 200 ℃, so a large amount of heat can flow into the cargo hold through the liquid cargo containment system, so that liquid cargo evaporates, which causes cargo loss on the one hand, and on the other hand, the pressure in the liquid cargo hold can be increased due to the evaporation of a large amount of liquid cargo, thereby endangering the sailing safety of the ship. The installation of an LNG ship heat insulation layer containment system with good heat insulation performance is very critical. In view of the different structures of lng ships, such as C-type cargo tanks, how to solve the problem of thermal insulation of the C-type cargo tanks is one of the problems to be solved.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, the present invention is directed to a composite polyurethane insulation system for a C-type LNG liquid cargo tank, which is used to solve the problem of thermal insulation of the C-type liquid cargo tank in the prior art.
To achieve the above and other related objects, the present invention provides a composite polyurethane thermal insulation system for a type C LNG liquid cargo tank, comprising: a plurality of welding studs are arranged at the bottom below the central line of the low-temperature medium tank body, a plurality of wood screws are arranged in the prefabricated polyurethane foam board, one end of each wood screw is connected with the welding studs, a disc is arranged at the other end of each wood screw,
the part above the central line of the low-temperature medium tank body and the outer surface of the prefabricated polyurethane foam plate are provided with spraying polyurethane foam layers, the outer surface of each spraying polyurethane foam layer is provided with a nano aerogel felt, and the outer surface of each nano aerogel felt is provided with a polyurea coating.
As a preferable technical scheme, a stud plunger is filled outside the wood screw.
As a preferable technical scheme, the nano aerogel felt is connected with the sprayed polyurethane foam layer through a heat-preservation nail.
As the preferred technical scheme, the heat preservation nail is a plastic heat preservation nail, an aluminum heat preservation nail or an iron heat preservation nail.
As a preferred technical scheme, an aluminum foil layer is arranged on the outer surface of the nano aerogel felt, and the polyurea coating is arranged on the outer surface of the aluminum foil layer.
As a preferable technical scheme, a crack-stopping reinforcing layer is arranged in the spraying polyurethane foam layer.
As a preferable technical scheme, an elastic compensation layer is arranged between the prefabricated polyurethane foam boards.
As described above, the composite polyurethane heat insulation system for the C-type LNG liquid cargo storage tank of the present invention has the following beneficial effects: through the matching of the prefabricated polyurethane foam plate, the sprayed polyurethane foam layer, the nano aerogel felt and the polyurea coating, the low-temperature medium tank body is internally and externally insulated, and the design is reasonable, so that the low-temperature medium tank is suitable for production, popularization and application.
Drawings
Fig. 1 is a schematic structural diagram of a composite polyurethane thermal insulation system for a C-type LNG liquid cargo storage tank according to an embodiment of the present invention;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is an enlarged view of FIG. 2 at C;
FIG. 4 is an enlarged view of FIG. 2 at D;
wherein the reference numerals are specified as follows: 1. spraying a polyurethane foam layer; 2. prefabricating a polyurethane foam board; 3. a nano aerogel blanket; 4. a polyurea coating; 5. a crack arrest reinforcement layer; 6. welding a stud; 7. a wood screw; 8. an elastic compensation layer; 9. a stud plunger; 10. insulating nails; 11. a low-temperature medium tank body.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to fig. 1 to 4. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
Referring to fig. 1 to 4, the present invention provides a composite polyurethane thermal insulation system for a C-type LNG liquid cargo storage tank, including: the low-temperature medium tank comprises a low-temperature medium tank body 11, wherein a plurality of welding studs 6 are arranged at the bottom below the central line of the low-temperature medium tank body 11, the welding studs 6 are welded on the low-temperature medium tank body 11 through studs, the materials of the welding studs are any of stainless steel, high manganese steel and nine nickel steel and are consistent with those of the low-temperature medium tank body 11, a plurality of wood screws 7 are arranged in a prefabricated polyurethane foam plate 2, one ends of the wood screws 7 are connected with the welding studs 6, discs are arranged at the other ends of the wood screws 7, a polyurethane foam spraying layer 1 is arranged at the part above the central line of the low-temperature medium tank body 11 and on the outer surface of the prefabricated polyurethane foam plate 2, a nanometer aerogel felt 3 is arranged on the outer surface of the polyurethane spraying foam layer 1, and a polyurea coating 4 is arranged on the outer surface of the nanometer aerogel felt 3.
The compound polyurethane insulation system of C type LNG liquid cargo storage tank that this embodiment provided, wooden screw 7 is filled with double-screw bolt plunger 9 outward, and double-screw bolt plunger 9 material is arbitrary in polystyrene foam, polyurethane foam, glass cotton, the melamine foam.
The compound polyurethane insulation system of C type LNG liquid cargo storage tank that this embodiment provided, nanometer aerogel felt 3 is connected with spraying polyurethane foam layer 1 through heat preservation nail 10.
The compound polyurethane thermal insulation system of C type LNG liquid cargo storage tank that this embodiment provided, heat preservation nail 10 is that plastics heat preservation nail 10, aluminium system heat preservation nail 10 or iron system heat preservation nail 10.
The compound type polyurethane insulation system of C type LNG liquid cargo storage tank that this embodiment provided, 3 surfaces of nanometer aerogel felt are provided with the aluminium foil layer, and aluminium foil layer surface is provided with polyurea coating 4.
The compound polyurethane insulation system of C type LNG liquid cargo storage tank that this embodiment provided is provided with crack arrest enhancement layer 5 in the spraying polyurethane foam layer 1.
The compound polyurethane insulation system of C type LNG liquid cargo storage tank that this embodiment provided is provided with elasticity compensation layer 8 between prefabricated polyurethane foam board 2.
In a specific use: the internal and external heat insulation of the low-temperature medium tank body 11 is realized through the matching of the prefabricated polyurethane foam plate 2, the sprayed polyurethane foam layer 1, the nano aerogel felt 3 and the polyurea coating 4, wherein the prefabricated polyurethane foam plate 2 is formed by foaming isocyanate and a polyol material on site.
In conclusion, the composite polyurethane heat insulation system for the C-type LNG liquid cargo storage tank, provided by the utility model, solves the heat insulation problem of the C-type liquid cargo tank in the prior art, is reasonable in design, and is suitable for production, popularization and application. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (7)
1. The utility model provides a compound polyurethane thermal insulation system of C type LNG liquid cargo storage tank which characterized in that includes: a plurality of welding studs are arranged at the bottom below the central line of the low-temperature medium tank body, a plurality of wood screws are arranged in the prefabricated polyurethane foam board, one end of each wood screw is connected with the welding studs, a disc is arranged at the other end of each wood screw,
the part above the central line of the low-temperature medium tank body and the outer surface of the prefabricated polyurethane foam plate are provided with spraying polyurethane foam layers, the outer surface of each spraying polyurethane foam layer is provided with a nano aerogel felt, and the outer surface of each nano aerogel felt is provided with a polyurea coating.
2. The composite polyurethane insulation system for a type-C LNG liquid cargo tank of claim 1, wherein the wood screw is externally filled with a stud plunger.
3. The composite polyurethane thermal insulation system for a type C LNG liquid cargo tank of claim 1, wherein the nano aerogel blanket is connected to the sprayed polyurethane foam layer by insulation pins.
4. The composite polyurethane thermal insulation system for the C-type LNG liquid cargo storage tank according to claim 3, wherein the thermal insulation nail is a plastic thermal insulation nail, an aluminum thermal insulation nail or an iron thermal insulation nail.
5. The composite polyurethane thermal insulation system for the C-type LNG liquid cargo storage tank of claim 3, wherein the outer surface of the nano aerogel felt is provided with an aluminum foil layer, and the outer surface of the aluminum foil layer is provided with the polyurea coating.
6. The composite polyurethane insulation system for a type-C LNG liquid cargo tank of claim 1, wherein a crack arrest reinforcement layer is disposed within the sprayed polyurethane foam layer.
7. The hybrid polyurethane insulation system for a type-C LNG liquid cargo tank according to claim 1, wherein an elastic compensation layer is disposed between the prefabricated polyurethane foam panels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121676703.8U CN215361754U (en) | 2021-07-22 | 2021-07-22 | C type LNG liquid cargo storage tank composite polyurethane heat insulation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121676703.8U CN215361754U (en) | 2021-07-22 | 2021-07-22 | C type LNG liquid cargo storage tank composite polyurethane heat insulation system |
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| CN215361754U true CN215361754U (en) | 2021-12-31 |
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| CN202121676703.8U Active CN215361754U (en) | 2021-07-22 | 2021-07-22 | C type LNG liquid cargo storage tank composite polyurethane heat insulation system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114771799A (en) * | 2022-04-28 | 2022-07-22 | 江南造船(集团)有限责任公司 | Refrigeration system for low-temperature liquid cargo tank and low-temperature liquid cargo tank |
| CN114889751A (en) * | 2022-04-27 | 2022-08-12 | 江南造船(集团)有限责任公司 | Heat insulation layer for low-temperature liquid cargo tank and low-temperature liquid cargo tank |
-
2021
- 2021-07-22 CN CN202121676703.8U patent/CN215361754U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114889751A (en) * | 2022-04-27 | 2022-08-12 | 江南造船(集团)有限责任公司 | Heat insulation layer for low-temperature liquid cargo tank and low-temperature liquid cargo tank |
| CN114771799A (en) * | 2022-04-28 | 2022-07-22 | 江南造船(集团)有限责任公司 | Refrigeration system for low-temperature liquid cargo tank and low-temperature liquid cargo tank |
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