CN114408100A - Heat insulation system of B-type liquid cargo tank and B-type liquid cargo tank - Google Patents
Heat insulation system of B-type liquid cargo tank and B-type liquid cargo tank Download PDFInfo
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- CN114408100A CN114408100A CN202210125299.8A CN202210125299A CN114408100A CN 114408100 A CN114408100 A CN 114408100A CN 202210125299 A CN202210125299 A CN 202210125299A CN 114408100 A CN114408100 A CN 114408100A
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- 239000011888 foil Substances 0.000 claims description 5
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- 239000011152 fibreglass Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
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- 239000004793 Polystyrene Substances 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000011491 glass wool Substances 0.000 description 2
- 239000003949 liquefied natural gas Substances 0.000 description 2
- 239000003915 liquefied petroleum gas Substances 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 229920006327 polystyrene foam Polymers 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
- B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
- B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
- B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
- B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
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- Ocean & Marine Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The application discloses a heat insulation system of a B-type liquid cargo tank and the B-type liquid cargo tank, wherein a plurality of supporting structures are respectively arranged on the outer wall surface of the liquid cargo tank, each supporting structure comprises a base plate and a plurality of rib plates arranged on the base plate, the base plate and the outer wall surface of the liquid cargo tank are separated by a preset distance, and the rib plates are fixed on the outer wall surface of the liquid cargo tank; the heat insulation system comprises a preset corrugated layer, a heat insulation inner layer and a heat insulation outer layer, the preset corrugated layer and the heat insulation inner layer are sequentially limited between the outer wall surface of the liquid cargo tank and the base plate, a plurality of protruding parts are arranged on one side, facing the liquid cargo tank, of the preset corrugated layer, concave cavities are formed in the areas between the adjacent protruding parts, and all the concave cavities are mutually communicated and form a channel which can be freely and smoothly communicated; the heat insulation inner layer is configured as a prefabricated plate, and one side close to the base plate is provided with a plurality of first grooves for nesting rib plates; an insulating outer layer at least partially covers the insulating inner layer and the substrate. The heat insulation system is low in construction difficulty, can provide heat insulation protection for the support structure of the outer wall surface of the liquid cargo tank in a setting area, and improves the heat insulation effect of the heat insulation system.
Description
Technical Field
The application relates to the technical field of liquefied gas carriers, in particular to a heat insulation system of a B-type liquid cargo tank and the B-type liquid cargo tank.
Background
A liquefied gas carrier is a special vessel for transporting low-temperature liquid cargo such as liquefied petroleum gas, liquefied natural gas, and the like, and the liquid cargo is loaded in a liquid cargo tank in the liquefied gas carrier. According to the type and the working scene of the loaded liquid cargo, the liquid cargo tank is divided into three types: the liquid cargo tank is mainly of a flat plate structure and is provided with complete secondary shielding; the B-type liquid cargo tank is of a flat plate structure or a spherical tank structure and is provided with a local secondary shield; the C-tank is a spherical tank type structure that does not require secondary shielding. The temperature of the liquid cargo in the liquid cargo tank is lower, the external temperature is far greater than the temperature of the liquid cargo, and then the liquid cargo tank needs to be provided with a heat insulation system to achieve the purposes of heat preservation and preventing external heat from carrying out the liquid cargo tank, and the evaporation capacity of the liquid cargo in the liquid cargo tank is reduced. Due to the different structural characteristics and performance requirements of the three cargo tanks, the insulation systems corresponding to the three cargo tanks are also different.
For B type cargo tank, its structure is comparatively complicated, need link to each other with the hull through numerous bearing structure, above-mentioned numerous bearing structure can prevent rolling support including the top surface, the bottom surface is prevented rolling support, prevent pitching support, vertical support and combination support etc. these bearing structure's structure is comparatively complicated, and installation space on cargo tank is very narrow and small, when setting up adiabatic system for B type cargo tank, because of the construction degree of difficulty in bearing structure department is very high, thereby can not set up the adiabatic system of rule in bearing structure department, make the adiabatic effect of the adiabatic system of current B type cargo tank relatively poor.
Therefore, it is an urgent need in the art to provide an insulation system for a B-type cargo tank and a B-type cargo tank to provide insulation protection for a region where a complex support structure is installed in the cargo tank and to improve the overall insulation effect of the insulation system.
Disclosure of Invention
The utility model provides an adiabatic system of B type cargo tank, its construction degree of difficulty is less, need not to prefabricate the adiabatic inlayer of complicated pattern in advance, only need utilize in advance to predetermine the ripple layer inject be used for making the passageway that leaks the liquid goods and pass through can, simultaneously, above-mentioned adiabatic system can set up regional adiabatic protection that provides, effectively improves the adiabatic effect of B type cargo tank to bearing structure on the cargo tank outer wall surface.
Another object is to provide a type B tank which employs the above-described insulation system for the type B tank.
In a first aspect, an embodiment of the present application provides an insulation system for a B-type cargo tank, where the cargo tank is located in a ship body, a plurality of support structures are respectively disposed on an outer wall surface of the cargo tank, each support structure includes a base plate and a plurality of rib plates disposed on an upper surface of the base plate, the base plate is spaced from the outer wall surface of the cargo tank by a preset distance, and the rib plates are fixed on the outer wall surface of the cargo tank and correspond to a frame structure inside the cargo tank; the above-mentioned heat insulation system comprises:
the liquid cargo tank comprises a preset corrugated layer, a plurality of convex parts and a plurality of concave cavities, wherein the preset corrugated layer is limited between the outer wall surface of the liquid cargo tank and a substrate;
a thermally insulating inner layer configured as a preformed sheet and confined between the pre-corrugated layer and the base sheet; one side of the heat insulation inner layer, which is close to the substrate, is provided with a plurality of first grooves for nesting the rib plates;
and the heat insulation outer layer at least partially covers the heat insulation inner layer and the substrate.
In a possible embodiment, the side of the pre-corrugated layer facing the thermally insulating inner layer is provided with a plurality of second grooves, which are extended from the first grooves.
In a possible embodiment, the predetermined corrugated layer comprises a plurality of first insulating pads, the zones between adjacent first insulating pads constituting the aforesaid cavities.
In one possible embodiment, the insulating outer layer comprises:
the panel layer is positioned between the heat insulation inner layer and the substrate and fills a reserved gap between the heat insulation inner layer and the substrate;
and the corner layer is connected with the panel layer and covers the lower surface of the substrate.
In a possible embodiment, the thickness of the thermally insulating inner layer is equal to or less than half of the distance between the substrate and the predetermined corrugated layer.
In a possible embodiment, the thickness of the thermally insulating inner layer is equal to the spacing between the substrate and the predetermined corrugated layer.
In a possible embodiment, the lower surface of the substrate is provided with a baffle plate, and the thickness of the baffle plate beyond the heat insulation outer layer at the substrate is 10-30 mm.
In one possible embodiment, the baffle defines an annular space in which a second insulating block is disposed, the second insulating block abutting against an inner wall surface of the hull; the heat insulation outer layer is abutted against the second heat insulation cushion block.
In a possible embodiment, the height of the projections is 10 to 25 mm.
In a possible embodiment, the region of the outer wall of the tank which is not provided with the supporting structure is provided with an insulating layer which is fastened to the outer wall of the tank by means of bolts.
In a possible embodiment, the pre-corrugated layer is a rigid layer made of polyethylene, polyurethane, aluminum foil, plastic, glass fiber reinforced plastic or polyurea material; or, the preset corrugated layer is a stainless steel layer.
In a second aspect, embodiments of the present application provide a type B cargo tank that includes the insulation system of the type B cargo tank of the above embodiments.
Compared with the prior art, the beneficial effects of this application are as follows at least:
the supporting structure comprises a base plate and a plurality of rib plates arranged on the base plate, a preset corrugated layer and an adiabatic inner layer are sequentially arranged between the outer wall surface of the liquid cargo tank and the base plate, one side, facing the outer wall surface of the liquid cargo tank, of the preset corrugated layer is provided with a plurality of protruding portions, a concave cavity is formed in an area between every two adjacent protruding portions, the concave cavities are mutually communicated and can provide a free and smooth channel for liquid cargo leaked from the liquid cargo tank, one side, close to the base plate, of the adiabatic inner layer is provided with a plurality of first grooves used for nesting the rib plates, the rib plates are nested in the first grooves in the adiabatic inner layer, and the adiabatic protection of the supporting structure and the liquid cargo tank can be achieved. The utility model provides an adiabatic system construction degree of difficulty is less, need not to prefabricate the adiabatic inlayer of complicated pattern in advance, only need utilize in advance to predetermine the ripple layer inject be used for making the leak liquid goods pass through the passageway can, simultaneously, above-mentioned adiabatic system can set up regional adiabatic protection that provides to bearing structure on the liquid cargo hold outer wall, effectively improves the adiabatic effect of B type liquid cargo hold.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic structural view of an insulation system of a type B cargo tank according to an embodiment of the present application;
FIG. 2 is a schematic structural view of an insulation system of a type B cargo tank according to an embodiment of the present application;
FIG. 3 is a schematic structural view of an insulation system of a type B cargo tank according to an embodiment of the present application;
FIG. 4 is a schematic diagram illustrating a structure of a pre-corrugated layer according to an embodiment of the present application;
FIG. 5 is a schematic diagram illustrating a structure of a pre-corrugated layer according to an embodiment of the present application;
FIG. 6 is a top view of an insulating inner layer according to an embodiment of the present application;
FIG. 7 is a front view of an insulation layer according to an embodiment of the present application;
FIG. 8 is a front view of an insulation layer according to an embodiment of the present application;
FIG. 9 is a side view of an insulation layer according to an embodiment of the present application.
Illustration of the drawings:
100 liquid cargo tanks; 110 a frame structure; 200 a support structure; 210 a substrate; 220 ribs; 230 a baffle plate; 300 an insulation system; 310, presetting a corrugated layer; 311 a boss; 312 a cavity; 313 a second groove; 314 first insulating spacer blocks; 320 an insulating inner layer; 321 a first groove; 330 an insulating outer layer; 331 a panel layer; 332 a corner layer; 340 a second insulating spacer; 350 insulating layer; 360 a crack arrest mesh layer; 400 hull; 500 a stud base; 501 four-way limit studs; 502 positioning a long stud; 503 nut; 600 a sensor; 700 of glass wool; 800 steam sealing the block.
Detailed Description
The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. The present application is capable of other and different embodiments and its several details are capable of modifications and variations in various respects, all without departing from the spirit of the present application.
In the description of the present application, it is to be noted that the terms "upper", "lower", "top" and "bottom", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, e.g. as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. Furthermore, the terms "first" and "second," etc. are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
The liquefied gas carrier is a special vessel for transporting low-temperature liquid cargo such as liquefied petroleum gas and liquefied natural gas, and comprises a ship body and a liquid cargo tank positioned in the ship body, wherein the liquid cargo tank is used for loading the liquid cargo. When the liquid cargo tank is a B-type liquid cargo tank, a plurality of supporting structures are arranged on the outer wall surface of the liquid cargo tank, and the supporting structures comprise but are not limited to a top surface anti-rolling support, a bottom surface anti-rolling support, an anti-pitching support, a vertical support and a combined support. Each support structure comprises a base plate and a plurality of ribbed plates, the base plate is separated from the outer wall surface of the liquid cargo tank by a preset distance, and the ribbed plates are arranged on the surface, facing the outer wall surface of the liquid cargo tank, of the base plate and fixed on the outer wall surface of the liquid cargo tank. The ribs correspond to the frame structure inside the tank.
Because the distance between the base plate and the outer wall surface of the liquid cargo tank is small, it is difficult to arrange a heat insulation system in the support structure arrangement area on the outer wall surface of the liquid cargo tank by using the conventional construction method and construction conditions, so that heat insulation protection is provided for the support structure arrangement area on the outer wall surface of the liquid cargo tank. However, it is also necessary to provide the insulation system in the region of the outer wall of the tank where the support structure is to be arranged. In order to solve the technical problem, the inventor fills in proper order between cargo tank and base plate and predetermines ripple layer and adiabatic inlayer to utilize predetermineeing the ripple layer and inject the passageway that is used for making the leakage cargo pass through, one side that makes adiabatic inlayer be close to the base plate is provided with a plurality of first recesses that are used for nested floor, the floor nests in the first recess in adiabatic inlayer, can realize the adiabatic protection of bearing structure and cargo tank, reduce the construction degree of difficulty, and can set up the regional adiabatic protection that provides for the bearing structure on the cargo tank outer wall face, the adiabatic effect of B type cargo tank has been improved.
According to one aspect of the present application, there is provided an insulation system for a type B cargo tank. The cargo tank 100 is located in the hull 400, the plurality of support structures 200 are respectively arranged on the outer wall surface of the cargo tank 100, each support structure 200 comprises a base plate 210 and a plurality of rib plates 220 arranged on the upper surface of the base plate 210, the base plate 210 is separated from the outer wall surface of the cargo tank 100 by a preset distance, and the rib plates 220 are fixed on the outer wall surface of the cargo tank 100 and correspond to the frame structures 110 in the cargo tank 100.
Referring to fig. 1, 4 and 6, the insulation system 300 includes a pre-set corrugated layer 310, an insulating inner layer 320 and an insulating outer layer 330. The preset corrugated layer 310 is limited between the outer wall surface of the cargo tank 100 and the base plate 210, a plurality of protruding portions 311 are arranged on one side, facing the outer wall surface of the cargo tank 100, of the preset corrugated layer 310, recessed cavities 312 are formed in the areas between the adjacent protruding portions 311, all the recessed cavities 312 are mutually communicated and form a free and unblocked channel, and the channel can discharge the cargo tank leaked from the cargo tank 100 into a collecting container at the bottom of the ship body 400 when the cargo tank 100 slightly leaks. The insulating inner layer 320 is configured as a prefabricated panel, preferably made of rigid polyurethane or polystyrene material, the insulating inner layer 320 being confined between the predetermined corrugated layer 310 and the base plate 210, and a side adjacent to the base plate 210 is provided with a plurality of first grooves 321 for nesting the ribs 220. An insulating outer layer 330 at least partially covers insulating inner layer 320 and substrate 210. The insulating inner layer 320 is preferably attached to the predetermined corrugated layer 310 by glue.
The preset corrugated layer 310 and the heat insulation inner layer 320 are sequentially arranged between the outer wall surface of the liquid cargo tank 100 and the base plate 210, a plurality of convex parts 311 are arranged on one side, facing the outer wall surface of the liquid cargo tank 100, of the preset corrugated layer 310, and the concave cavities 312 are formed in the areas between the adjacent convex parts 311, and the concave cavities 312 can provide a free and smooth channel for liquid cargo leaked from the liquid cargo tank 100, so that the blockage phenomenon is avoided when the liquid cargo tank 100 is slightly leaked. In addition, the preset corrugated layer 310 can better ensure the secondary shielding space. The side of the heat-insulating inner layer 320 close to the base plate 210 is provided with a plurality of first grooves 321 for nesting the ribs 220, and the ribs 220 are nested in the first grooves 321 in the heat-insulating inner layer 320, so that the heat-insulating protection of the support structure 200 and the cargo tank 100 can be realized. Each rib 220 has a corresponding first groove 321, and the shape of the first groove 321 matches the shape of the rib 220 corresponding to the first groove, so that the heat insulation system 300 can be applied to different types or different structures of the support structure 200. The construction difficulty of the heat insulation system 300 is small, the heat insulation inner layer 320 of a complex type does not need to be prefabricated in advance, only the preset corrugated layer 310 is needed to be utilized to limit a channel for enabling leaked liquid cargo to pass through, meanwhile, the heat insulation system 300 can provide heat insulation protection for the support structure setting area on the outer wall surface of the liquid cargo tank 100, and the heat insulation effect of the B-type liquid cargo tank is effectively improved.
As an example, with reference to fig. 1 and 4, the corrugated layer 310 is provided, on the side facing the insulating inner layer 320, with a plurality of second grooves 313, the second grooves 313 being extended from the first grooves 321 described above.
Each rib 220 in the support structure 200 corresponds to one second groove 313, and the shape of the second groove 313 matches the shape of the rib 220 corresponding to the second groove 313. Because the structures of the different ribs 220 in the supporting structure 200 are different, and the structures of the second grooves 313 corresponding to the different ribs 220 are also different, when the heat insulation system 300 is provided for the supporting structures 200 of different types or different structures, only the second grooves 313 corresponding to the ribs 220 need to be provided on the preset corrugated layer 310 according to the structures of the ribs 220, so that the heat insulation system 300 can be applied to the supporting structures 200 of different types or different structures. In this embodiment, as shown in fig. 4, the second groove 313 may be further divided into a short groove and a long groove.
By way of example, with reference to fig. 3 and 5, the predetermined corrugated layer 310 comprises a plurality of first insulating pads 314, the zones between adjacent first insulating pads 314 constituting the above-mentioned cavities 312.
As an example, the pre-corrugated layer 310 is a hard layer made of polyethylene, polyurethane, aluminum foil, plastic, glass fiber reinforced plastic or polyurea material; alternatively, the corrugated layer 310 is preset to be a stainless steel layer.
By way of example, referring to FIG. 1, the insulating outer layer 330 includes a face layer 331 and a corner layer 332. The deck layer 331 is located between the heat-insulating inner layer 320 and the base plate 210, and fills the space reserved between the heat-insulating inner layer 320 and the base plate 210 to restrict the heat-insulating inner layer 320 from moving toward the cargo tank 100 side or toward the base plate 210 side. The corner layer 332 is connected to the panel layer 331 and covers the lower surface of the substrate 210.
Preferably, the panel layer 331 and the corner layer 332 are foamed layers formed of foamed polyurethane or polystyrene foam, which can further improve the thermal insulation performance of the thermal insulation system 300.
Preferably, the thickness of the heat insulation inner layer 320 is preferably less than or equal to one half of the distance between the substrate 210 and the predetermined corrugated layer 310. By maintaining the insulating inner layer 320 at a suitable thickness, a panel layer 331 may be further filled between the insulating inner layer 320 and the substrate 210 to improve the insulating performance of the insulating system 300.
Preferably, a crack arrest net layer 360 is arranged between the panel layer 331 and the heat insulation inner layer 320, the crack arrest net layer 360 is preferably made of a glass fiber grid, and the glass fiber grid mainly comprises silicon oxide, and has stable physical and chemical properties, high strength, high modulus, high wear resistance, excellent cold resistance and excellent heat stability. The crack stopper web layer 360 interlocks and restrains the panel layer 331 to improve the low temperature shrinkage resistance of the panel layer 331.
The panel layer 331 is sprayed to the gap reserved between the heat insulation inner layer 320 and the substrate 210, and after the panel layer 331 is cooled and fixed, the crack arrest net layer 360 is bonded with the panel layer 331, and the crack arrest net layer 360 is equivalent to providing a shape fixing net for the panel layer 331, so that the deformation of the panel layer 331 can be avoided, the low-temperature shrinkage performance of the panel layer 331 can be improved, the possibility of shrinkage cracks of the panel layer 331 is reduced, and the heat insulation effect of the heat insulation system 300 is ensured and the stability of the heat insulation system 300 is prolonged.
As an example, referring to fig. 2, the thickness of the insulating inner layer 320 is equal to the distance between the substrate 210 and the predetermined corrugated layer 310, in other words, the insulating inner layer 320 is completely filled in the space formed by the substrate 210 and the predetermined corrugated layer 310, the top of the insulating inner layer 320 abuts against the lower surface of the predetermined corrugated layer 310, and the bottom of the insulating inner layer 320 abuts against the upper surface of the substrate 210. An insulating outer layer 330 is positioned about the periphery of insulating inner layer 320 and at least partially covers insulating inner layer 320 and substrate 210.
Preferably, the insulating outer layer 330 is a foamed layer formed of foamed polyurethane or polystyrene foam, which can further improve the insulating performance of the insulating system 300. The heat insulation system 300 has the advantages of convenient construction and disassembly, when the heat insulation inner layer 320 needs to be replaced, only the heat insulation outer layer 330 at the periphery of the heat insulation inner layer 320 needs to be dug out, the original heat insulation inner layer 310 is taken out, a new heat insulation inner layer 310 is installed in situ, and the new heat insulation outer layer 320 is filled.
As an example, referring to fig. 6, each rib 220 in the support structure 200 has a corresponding first groove 321, and the shape of the first groove 321 matches the shape of its corresponding rib 220. Because the different ribs 220 in the supporting structure 200 have different structures, and the first grooves 321 corresponding to the different ribs 220 have different structures, when the heat insulation system 300 is provided for the supporting structures 200 with different types or different structures, only the first grooves 321 corresponding to the ribs 220 need to be provided on the heat insulation inner layer 320 according to the structures of the ribs 220, so that the heat insulation system 300 can be applied to the supporting structures 200 with different types or different structures.
As an example, referring to FIG. 4, the height of the boss 311 is preferably 10 to 25 mm. A detector (not shown) for detecting the respective or target gas is disposed within cavity 312. The cavity 311 in which the detector is arranged still leaves a certain space for the gas to circulate inside this cavity 311. In this embodiment, four support structures 200 are provided on the outer wall surface of the cargo tank 100, the four support structures 200 are respectively provided in the front, rear, left and right directions of the cargo tank 100, and one detector is provided in each support structure 200.
As an example, referring to fig. 1 to 3, the baffle 230 is provided on the lower surface of the base plate 210, the baffle 230 defines an annular space, and the second insulating mat 340 is provided in the annular space, and the second insulating mat 340 abuts against the inner wall surface of the hull 400. The second insulating blocks 340 are preferably structures having good insulating properties, which may be embodied as wood plates, capable of preventing low temperature in the cargo tank 100 from being directly transferred to the hull 400.
Preferably, referring to fig. 1 to 3, the heat insulating outer layer 330 abuts against the second heat insulating block 340, and the thickness of the heat insulating outer layer 330 at the substrate 210 beyond the baffle 230 is preferably 10 to 30 mm. In this embodiment, the thickness of the insulating outer layer 330 at the substrate 210 beyond the baffle 230 is 15 mm.
As an example, referring to fig. 1-3, the non-support structure-disposed region in the outer wall surface of the cargo tank 100 is provided with an insulation layer 350, and the insulation layer 350 is bolted to the outer wall surface of the cargo tank 100 to provide insulation protection for the non-support structure-disposed region on the outer wall surface of the cargo tank 100. In particular, the insulation layer 350 is formed by stacking a plurality of insulation boards, with a crack-arresting mesh layer disposed between adjacent insulation boards, each insulation board being configured as a prefabricated board, preferably made of rigid polyurethane or polystyrene material.
Referring to fig. 7 to 9, the thermal insulation layer 350 specifically includes a low-temperature thermal insulation plate 351, a medium-temperature thermal insulation plate 352, and a high-temperature thermal insulation plate 353, which are sequentially stacked, wherein the low-temperature thermal insulation plate 351 is located on one side of the thermal insulation layer 350 close to the cargo tank 100. The side surfaces of the low-temperature heat-insulation plate 351 and the medium-temperature heat-insulation plate 352 are both provided with glass wool 700, and the side surface of the high-temperature heat-insulation plate 353 is provided with a steam sealing block 800. The insulation 350 is provided with leakage channels 354. A sensor 600 is disposed at the leak channel 354, the sensor 600 including a gas sensor or a temperature sensor.
Preferably, the heat insulation layer 350 is connected with the outer wall surface of the cargo tank 100 through a bolt structure, and the bolt structure comprises a bolt base 500, a four-way limiting bolt 501, a positioning long bolt 502 and a nut 503.
Preferably, insulating outer layer 330 also partially overlies insulation layer 350 at the non-support structure placement areas.
By way of example, the outer surfaces of insulating outer layer 330 and insulation layer 350 are each provided with a protective layer of a material including, but not limited to, aluminum foil, plastic, fiberglass, or polyurea. In this embodiment, the material of the protective layer is preferably aluminum foil.
According to one aspect of the present application, there is provided a type B tank comprising the insulation system of the type B tank of the above embodiments.
According to the above technical solution, the support structure 200 includes a base plate 210 and a plurality of ribs 220 disposed on the base plate 210, a preset corrugated layer 310 and a heat insulation inner layer 320 are sequentially disposed between an outer wall surface of the cargo tank 100 and the base plate 210, a plurality of protrusions 311 are disposed on a side of the preset corrugated layer 310 facing the outer wall surface of the cargo tank 100, a recessed cavity 312 is formed in a region between adjacent protrusions 311, the recessed cavities 312 are mutually communicated and can provide a free and smooth passage for liquid cargo leaked from the cargo tank 100, a plurality of first grooves 321 for nesting the ribs 220 are disposed on a side of the heat insulation inner layer 320 close to the base plate 210, and the ribs 220 are nested in the first grooves 321 in the heat insulation inner layer 320, so that heat insulation protection between the support structure 200 and the cargo tank 100 can be achieved. The heat insulation system 300 that this application provided the construction degree of difficulty is less, need not to prefabricate the adiabatic inlayer 320 of complicated pattern in advance, only need utilize in advance predetermine corrugated layer 310 inject be used for making the passageway that leaks liquid goods and pass through can, simultaneously, above-mentioned heat insulation system 300 can set up regional adiabatic protection that provides, effectively improves the adiabatic effect of B type cargo tank to the bearing structure on the outer wall of cargo tank 100.
The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and substitutions can be made without departing from the technical principle of the present application, and these modifications and substitutions should also be regarded as the protection scope of the present application.
Claims (12)
1. A heat insulation system of a B-type liquid cargo tank is characterized in that the liquid cargo tank is positioned in a ship body, a plurality of support structures are respectively arranged on the outer wall surface of the liquid cargo tank, each support structure comprises a base plate and a plurality of rib plates arranged on the upper surface of the base plate, the base plate and the outer wall surface of the liquid cargo tank are separated by a preset distance, and the rib plates are fixed on the outer wall surface of the liquid cargo tank and correspond to a frame structure in the liquid cargo tank; characterized in that said insulation system comprises:
the preset corrugated layer is limited between the outer wall surface of the liquid cargo tank and the base plate, a plurality of protruding parts are arranged on one side, facing the outer wall surface of the liquid cargo tank, of the preset corrugated layer, concave cavities are formed in areas between adjacent protruding parts, and all the concave cavities are communicated with each other and form a channel which can be freely and smoothly formed;
a thermally insulating inner layer configured as a preformed sheet and confined between the pre-corrugated layer and the base sheet; a plurality of first grooves for nesting the rib plates are formed in one side, close to the substrate, of the heat insulation inner layer;
a thermally insulating outer layer at least partially covering the thermally insulating inner layer and the substrate.
2. The insulation system for a type B cargo tank according to claim 1 wherein the side of the predetermined corrugated layer facing the thermally insulating inner layer is provided with a plurality of second grooves extending from the first grooves.
3. The insulation system for a tank B of claim 1, wherein the predetermined corrugated layer comprises a plurality of first insulation blocks, and the area between adjacent first insulation blocks constitutes the cavity.
4. An insulation system for a type B cargo tank according to any one of claims 1 to 3 wherein the outer insulation layer comprises:
the panel layer is positioned between the heat insulation inner layer and the substrate and fills a reserved gap between the heat insulation inner layer and the substrate;
and the corner layer is connected with the panel layer and covers the lower surface of the substrate.
5. The insulation system for a type B cargo tank according to claim 4 wherein the thickness of the insulating inner layer is equal to or less than one-half of the distance between the base plate and the predetermined corrugated layer.
6. The insulation system for a type B cargo tank according to any one of claims 1 to 3, wherein the thickness of the insulating inner layer is equal to the distance between the base plate and the preset corrugated layer.
7. The heat insulation system for a type B cargo tank according to claim 1, wherein the lower surface of the base plate is provided with a baffle plate, and the thickness of the baffle plate beyond which the heat insulation outer layer is located at the base plate is 10-30 mm.
8. The thermal insulation system for a type B cargo tank according to claim 7 wherein said baffle defines an annular space, and a second thermal insulation block is disposed in said annular space, said second thermal insulation block abutting against an inner wall surface of said hull; the heat insulation outer layer is abutted against the second heat insulation cushion block.
9. The insulation system for a type B cargo tank according to claim 1 wherein the height of the projections is 10 to 25 mm.
10. The insulation system for a type B cargo tank according to claim 1 wherein a non-support structure installation area in the outer wall surface of the cargo tank is provided with an insulation layer which is fixed to the outer wall surface of the cargo tank by bolts.
11. The insulation system of a type B cargo tank according to claim 1 wherein the pre-corrugated layer is a stiff layer made of polyethylene, polyurethane, aluminum foil, plastic, glass fiber reinforced plastic or polyurea material; or the preset corrugated layer is a stainless steel layer.
12. A type B cargo tank comprising an insulation system of the type B cargo tank according to any one of claims 1 to 11.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210125299.8A CN114408100A (en) | 2022-02-10 | 2022-02-10 | Heat insulation system of B-type liquid cargo tank and B-type liquid cargo tank |
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| CN202210125299.8A CN114408100A (en) | 2022-02-10 | 2022-02-10 | Heat insulation system of B-type liquid cargo tank and B-type liquid cargo tank |
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| CN113911265A (en) * | 2021-10-15 | 2022-01-11 | 沪东中华造船(集团)有限公司 | Container ship containment system and B-type independent fuel compartment insulation structure thereof |
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| JPH0752870A (en) * | 1993-08-20 | 1995-02-28 | Ishikawajima Harima Heavy Ind Co Ltd | Hull protection device in liqueified gas carrier |
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Application publication date: 20220429 |