CN102305347A - High-vacuum multi-layer heat-insulating deep-cooling double-shell spherical storage tank - Google Patents
High-vacuum multi-layer heat-insulating deep-cooling double-shell spherical storage tank Download PDFInfo
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- CN102305347A CN102305347A CN201110136206A CN201110136206A CN102305347A CN 102305347 A CN102305347 A CN 102305347A CN 201110136206 A CN201110136206 A CN 201110136206A CN 201110136206 A CN201110136206 A CN 201110136206A CN 102305347 A CN102305347 A CN 102305347A
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Abstract
The invention relates to a high-vacuum multi-layer heat-insulating deep-cooling double-shell spherical storage tank, which comprises an outer spherical tank and an inner spherical tank, wherein the inner spherical tank is placed in the outer spherical tank; the inner spherical tank is supported in the outer spherical tank through an upper fixed supporting member which is arranged on the upper part of the inner spherical tank and a lower fixed supporting member which is arranged on the lower part of the inner spherical tank; a laminated inner supporting member is arranged between the inner spherical tank and the outer spherical tank; a heat-insulating material is coated on an outer surface of the inner spherical tank; a reinforcing plate is arranged on the outer surface of the outer spherical tank; the reinforcing plate is welded with an upper supporting column through an equator tangential structure; the upper supporting column is fixedly connected with a lower supporting column through the heat-insulating material; and a pulling rod is connected between the upper supporting column and the lower supporting column. By adoption of a mixed spherical shell structure, the supporting columns are welded on the reinforcing plate on the outer surface of the outer spherical tank through the equator tangential structure, so the carrying capacity of the supporting columns is ensured; and a high-vacuum multi-layer heat-insulating cold-insulating structure is adopted between the inner spherical tank and the outer spherical tank, and the inner supporting member has a laminated supporting structure, so the problem of telescoping of the supporting member caused by temperature change is solved, and the light weight of the storage tank and volume maximization are realized.
Description
Technical field
The present invention relates to a kind of deep cooling bivalve spherical storage tank, be specifically related to a kind of deep cooling bivalve spherical storage tank of high vacuum multiple layer heat insulation type.
Background technique
Deep cooling bivalve spherical storage tank is mainly used in stores cryogenic liquide medium (liquid hydrogen, liquid oxygen, liquid argon and liquid nitrogen etc.), is the key equipment of cryogenic system.At present, the storage facilities of domestic cryogenic liquide medium mainly contains adiabatic two types of vacuum insulation and common accumulation.The former is less for convenient transportation volume, along with the increase of volume, can not ensure higher degree of vacuum, influences its cold insulation effect, so generally be lower than 100m
3The latter's volume is bigger, at 500m
3-10000m
3, adopt the primary and secondary jar, greater than 5000m more
3The vertical and cylindrical atmospheric storage tanks that adopt more; Like single appearance formula storage tank, double volume type storage tank, hold the formula storage tank entirely; Diaphragm type storage tank and prestressed concrete storage tank, cost is high, floor space is big,, shortcomings such as surface area big, day relative evaporation height, operating cost height high to the requirement on basis but these storage tanks exist.The patent No. is that 200820135107.7 Chinese patent discloses " low temperature bivalve spherical storage tank ", compares with cylindrical vessel commonly used, and spherical tank has following characteristics: 1) surface area of spherical tank is minimum, and promptly the required steel area of spherical tank is minimum under same capability; 2) spherical tank coverboard bearing capacity is twice than cylindrical vessel, and promptly under same diameter, uniform pressure, when adopting same steel plate, the thickness of slab of spherical tank only needs half of cylindrical vessel thickness of slab, makes the spherical tank materials economize, and cost is low; 3) because the wind factor of spherical tank is 0.3, and cylindrical vessel is about 0.7, and therefore concerning wind load, spherical tank is more a lot of than cylindrical vessel safety; 4) the spherical tank basis is simple, engineering work load is little and expenditure of construction is cheap; 5) because spherical tank volume is big, under the certain situation of total measurement (volume), spherical tank quantity significantly reduces.The also corresponding minimizing of quantity of so corresponding process pipelines, valve and annex etc.Except that reducing investment outlay, bring great convenience for operation, management.Although " low temperature bivalve spherical storage tank " solved some problems, do not consider the thermal resistance problem of supporting member, the flexible problem of supporting member when yet not solving spherical tank because of temperature variation generation distortion.The patent No. is that 02285575.0 Chinese patent discloses " large-scale safety anti-explosive lpg spherical tank "; Solved the problem of boiling liquid expansibility vapour explosion; But do not have to solve the thermal resistance problem of supporting member between inside and outside jar, do not consider the flexible problem of supporting member when spherical tank produces distortion because of temperature variation yet.The patent No. is that 200820134503.8 and 200820134502.3 Chinese patents disclose " the adiabatic spherical tank pillar of cryogenic vacuum ", though solved the problem that supporting member freely stretches when temperature variation, does not all consider the thermal resistance problem of supporting member.
At present, to deep cooling bivalve spherical storage tank, general vacuum layer filling expansion perlite between internal and external layer is realized heat insulation.Like the patent No. is that 200820135107.7 Chinese patent discloses " low temperature bivalve spherical storage tank ", uses perlite as thermoinsulation material, compares with other thermoinsulation material, and the per unit volume quality is big, and its thermal conductivity numerical value is also higher.In order to reach satisfied effect of heat insulation, vacuum layer is thicker, and therefore vacuum layer thickness, can make used metallic material increase at 250-400mm usually, increased cost; Perlite effect because of gravity in the spherical tank put procedure can deposit down in addition, makes the heat-shielding performance of spherical tank receive bigger influence.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, a kind of deep cooling bivalve spherical storage tank of high vacuum multiple layer heat insulation type is provided.
The object of the invention is realized through following technological scheme:
High vacuum multiple layer heat insulation deep cooling bivalve spherical storage tank; Comprise outer spherical tank and the interior spherical tank that places outer spherical tank; Characteristics are: the following fixed support member supports of last fixed support member and the bottom of spherical tank by its top is in outer spherical tank in said; And interior spherical tank and outside be provided with stacked inner bracing member between the spherical tank; Be coated with heat-insulating material on the outer surface of spherical tank in said; The outer surface of outer spherical tank is provided with stiffener; Stiffener is welded with upper supporting column by the positive cut structure in equator; Upper supporting column is connected and fixed by heat-barrier material and lower supporting rod, between upper supporting column and lower supporting rod, is connected with pull bar.
Further; Above-mentioned high vacuum multiple layer heat insulation deep cooling bivalve spherical storage tank; Said stacked inner bracing member comprises the innermost layer lamination of the middle lamination of stacked inner bracing member, stacked inner bracing member and the outermost layer lamination of stacked inner bracing member; Be connected with the fit structure of groove by boss between the innermost layer lamination of stacked inner bracing member and the middle lamination of stacked inner bracing member; Be connected with the fit structure of groove by boss between the middle lamination of stacked inner bracing member and the outermost layer lamination of stacked inner bracing member; The innermost layer lamination of stacked inner bracing member and interior spherical tank outer surface fit, and the outermost layer lamination of stacked inner bracing member fits with outer spherical tank inner surface.
Further; Above-mentioned high vacuum multiple layer heat insulation deep cooling bivalve spherical storage tank; Said upward fixed support member comprises the interior supporting disk of fixed support member, the adiabatic blocking materials of going up the fixed support member and the outer supporting disk of last fixed support member; One end of the adiabatic blocking materials of last fixed support member is installed in the groove of interior supporting disk of fixed support member, and the other end of the adiabatic blocking materials of last fixed support member is installed in the groove of outer supporting disk of fixed support member.
Again further; Above-mentioned high vacuum multiple layer heat insulation deep cooling bivalve spherical storage tank; Said fixed support member down comprises interior supporting disk, the adiabatic blocking materials of following fixed support member and the outer supporting disk of following fixed support member of fixed support member down; One end of the adiabatic blocking materials of following fixed support member is installed on down in the groove of interior supporting disk of fixed support member, and the other end of the adiabatic blocking materials of following fixed support member is installed on down in the groove of outer supporting disk of fixed support member.
Again further, above-mentioned high vacuum multiple layer heat insulation deep cooling bivalve spherical storage tank, said pull bar and lower supporting rod are fixed on the ring beam structure basis.
Again further, above-mentioned high vacuum multiple layer heat insulation deep cooling bivalve spherical storage tank, said thermoinsulation material is built up with interval mode one by one by two-sided metallized film and glass fiber paper.
Substantive distinguishing features and obvious improvement that technological scheme of the present invention is outstanding are mainly reflected in:
The present invention has adopted the compounding spheric shell structure, and pillar adopts the positive cut structure in equator to be welded on the stiffening plate of outer spherical tank outer surface, guarantees the bearing capacity of pillar; Pull bar is set pillar is coupled together, increase the bearing capacity of pillar and the ability of antiseismic power; Adopt the cold insulation structure of high vacuum multiple layer heat insulation between the inside and outside spherical tank; Inner bracing member adopts stacked supporting structure, has solved the flexible problem that supporting member produces because of temperature variation, and deep cooling bivalve spherical storage tank has been realized lightweight and volume maximization, has saved metallic material, has reduced cost, is a practical new design.
Description of drawings
Below in conjunction with accompanying drawing technological scheme of the present invention is described further:
Fig. 1: the master of bivalve of the present invention spherical storage tank looks schematic representation;
Fig. 2: the structural representation of thermoinsulation material;
Fig. 3: the structural representation of stacked inner bracing member;
Fig. 4: the structural representation of going up the fixed support member.
The implication of each reference character sees the following form among the figure:
Embodiment
As shown in Figure 1; High vacuum multiple layer heat insulation deep cooling bivalve spherical storage tank; Comprise outer spherical tank 1 and the interior spherical tank 3 that places outer spherical tank 1; Interior spherical tank 3 is supported in the outer spherical tank 1 by the last fixed support member 11 on its top and the following fixed support member 10 of bottom; As shown in Figure 4; Last fixed support member 11 comprises the interior supporting disk 18 of fixed support member, the adiabatic backing material 19 of going up the fixed support member and the outer supporting disk 20 of last fixed support member; One end of the adiabatic backing material 19 of last fixed support member is installed in the groove of interior supporting disk 18 of fixed support member, and the other end of the adiabatic backing material 19 of last fixed support member is installed in the groove of outer supporting disk 20 of fixed support member.Following fixed support member 10 comprises interior supporting disk, the adiabatic blocking materials of following fixed support member and the outer supporting disk of following fixed support member of fixed support member down; One end of the adiabatic blocking materials of following fixed support member is installed on down in the groove of interior supporting disk of fixed support member, and the other end of the adiabatic blocking materials of following fixed support member is installed on down in the groove of outer supporting disk of fixed support member.And interior spherical tank 3 and outside be provided with stacked inner bracing member 5 between the spherical tank 1; As shown in Figure 3; Stacked inner bracing member 5 comprises the innermost layer lamination 16 of the middle lamination 15 of stacked inner bracing member, stacked inner bracing member and the outermost layer lamination 17 of stacked inner bracing member; Be connected with the fit structure of groove by boss between the innermost layer lamination 16 of stacked inner bracing member and the middle lamination 15 of stacked inner bracing member; Be connected with the fit structure of groove by boss between the middle lamination 15 of stacked inner bracing member and the outermost layer lamination 17 of stacked inner bracing member; The innermost layer lamination 16 and interior spherical tank 3 outer surfaces of stacked inner bracing member fit; The outermost layer lamination 17 and outer spherical tank 1 inner surface of stacked inner bracing member fit; Be clipped in and be the middle lamination 15 of stacked inner bracing member between two-layer; The arc surface that one end of the innermost layer lamination 16 of stacked inner bracing member and interior spherical tank 3 cambered surfaces match; The other end is a horizontal plane; Mid portion has groove; Middle lamination 15 two ends of stacked inner bracing member all are horizontal plane; The mid portion of one end has groove; Mid portion at the other end has boss; The size of boss is than the undersized of groove; The middle lamination 15 of each stacked inner bracing member is by bonding again behind boss and groove fixing; The arc surface that outermost layer lamination 17 1 ends of stacked inner bracing member and the cambered surface of outer spherical tank 1 match; The mid portion of the outermost layer lamination 17 of stacked inner bracing member has groove; The bottom of groove also is an arc surface; The size of groove is bigger than the fixed bar 14 of stacked inner bracing member; The other end is a level; Mid portion has boss; The middle lamination 15 of the innermost layer lamination 16 of stacked inner bracing member, stacked inner bracing member and the outermost layer lamination 17 of stacked inner bracing member are by bonding again behind boss and groove fixing, and be non-caked between the outermost layer lamination 17 of the innermost layer lamination 16 of stacked inner bracing member and interior spherical tank 3 outer surfaces and stacked inner bracing member and outer spherical tank 1 inner surface.Be coated with thermoinsulation material 2 on the outer surface of interior spherical tank 3; As shown in Figure 2; Thermoinsulation material 2 is built up with interval mode one by one by two-sided metallized film 12 and glass fiber paper 13; The outer surface of outer spherical tank 1 is provided with stiffening plate 4; Stiffening plate 4 is welded with upper supporting column 6 through the positive cut structure in equator; Upper supporting column 6 is connected fixing with lower supporting rod 9 through thermal-protective material 8, between upper supporting column 6 and lower supporting rod 9, be connected with pull bar 7, and pull bar 7 is fixed on the ring beam structure basis with lower supporting rod 9.
The material of the interior supporting disk 18 of interior spherical tank 3 and last fixed support member is an Austenitic Stainless Steel; The material of the fixing rod 14 of outer spherical tank 1, stiffening plate 4, upper supporting column 6, pull bar 7, lower supporting rod 9, stacked inner bracing member and the outer supporting disk 20 of last fixed support member is an Ordinary Steel; The material of the outermost surface lamination 17 of the innermost layer lamination 16 of the middle lamination 15 of thermal-protective material 8, stacked inner bracing member, stacked inner bracing member, stacked inner bracing member and the adiabatic blocking materials 19 of last fixed support member is a glass fibre reinforced plastics.
The spherical shell of outer spherical tank 1 and interior spherical tank 3 is compounding spheric shell structures, and the principle of confirming the spherical shell physical dimension is few branch band and the physical dimension that as far as possible strengthens Spherical Tank Shell Plates, to reduce fusion length.Use support member support between outer spherical tank 3 and the interior spherical tank 1.The supporting form of outer spherical tank 1 adopts shore supports, and the quantity of pillar need be uniformly distributed with according to load.The positive cut structure in upper supporting column 6 employing equator is welded on the stiffening plate 4 of outer spherical tank 1 outer surface, guarantees the bearing capacity of pillar.Pillar adopts the structural measure of segmentation cold insulation, utilizes fastening piece that upper supporting column 6 and the connecting plate of lower supporting rod 9 through thermal-protective material 8 are fixed up, and forms the purpose of integrated support, reduces outer spherical tank 1 and extraneous heat transfer simultaneously.Pull bar 7 couples together pillar, increases the bearing capacity of pillar and the ability of antiseismic power.With the basis of lower supporting rod 9 structural requirements be ring beam structure, this structure can effectively overcome negative consequences such as uneven settlement.
The thermoinsulation material 2 of vacuum sandwich adopts two-sided metallized film 12 and glass fiber paper 13 to combine at interval one by one between the outer spherical tank 1 of above-mentioned deep cooling bivalve spherical storage tank and the interior spherical tank 3.The thermal conductivity of thermoinsulation material 2 is starkly lower than the thermal conductivity of expanded perlite under uniform temp; Therefore can reduce the consumption of thermoinsulation material, reduce the thermoinsulation material cost, reduce the vacuum sandwich spacing; Saved metallic material, the actual volume of spherical tank 3 in increasing when externally measure-alike.In addition, these thermoinsulation material 2 per unit volume quality are more much lower than expanded perlite, and these all help the lightweight and the volume maximization of spherical storage tank.
Supporting member of the present invention comprises fixed support member 11, following fixed support member 10 and stacked inner bracing member 5.In order to prevent to make spherical tank produce the accident that moves upward, be provided with fixed support member 11 at the top of spherical tank.The material of the interior supporting disk 18 of last fixed support member and 20 uses of the outer supporting disk of the last fixed support member material with interior spherical tank 3 and outer spherical tank 1 respectively is identical, and the adiabatic blocking materials 19 of last fixed support member is the circular glass fibre reinforced plastics of monoblock.In the design of last fixed support member 11; Considered to expand with heat and contract with cold and be out of shape different problems between caused outer spherical tank 1 and the interior spherical tank 3; The adiabatic blocking materials 19 of last fixed support member is placed directly in the groove between the outer supporting disk 20 of interior supporting disk 18 and last fixed support member of fixed support member, can freely stretch with expanding with heat and contract with cold of interior spherical tank 3 along with outer spherical tank 1.For prevent it outside in the contraction process of spherical tank 1 and interior spherical tank 3 supporting effect disappear, the depth of groove of the outer supporting disk 20 of last fixed support member can not be too little, through ANSYS thermal stress analysis calculating, the degree of depth of this groove is that 80mm is more suitable.In order to prevent the rotation between outer spherical tank 1 and the interior spherical tank 3, be provided with down fixed support member 10.Following fixed support member 10 is identical with the structure of last fixed support member 11, and just size is different.Stacked inner bracing member 5 adopts stacked cold insulation structure, and used material is a glass fibre reinforced plastics.If the diameter of interior spherical tank 1 is d, the horizontal equivalent between the then stacked inner bracing member 5 must be less than 0.618d.Compare with the inner bracing member of monolithic, the thermal resistance of employed stacked inner bracing member 5 is big, causes leaking heat little, and mezzanine space diminishes, and has not only saved the flexible problem that supporting member produced when metallic material had also solved temperature variation simultaneously.
In sum, the present invention has adopted the compounding spheric shell structure, and pillar adopts the positive cut structure in equator to be welded on the stiffening plate of outer spherical tank outer surface, guarantees the bearing capacity of pillar; Pull bar is set pillar is coupled together, increase the bearing capacity of pillar and the ability of antiseismic power; Adopt the cold insulation structure of high vacuum multiple layer heat insulation between the inside and outside spherical tank; Inner bracing member adopts stacked supporting structure, has solved the flexible problem that supporting member produces because of temperature variation, and deep cooling bivalve spherical storage tank has been realized lightweight and volume maximization, has saved metallic material, has reduced cost.
What need understand is: the above only is a preferred implementation of the present invention; For those skilled in the art; Under the prerequisite that does not break away from the principle of the invention, can also make some improvement and retouching, these improvement and retouching also should be considered as protection scope of the present invention.
Claims (6)
1. high vacuum multiple layer heat insulation deep cooling bivalve spherical storage tank; Comprise outer spherical tank (1) and place the interior spherical tank (3) of outer spherical tank (1); It is characterized in that: spherical tank (3) is supported in the outer spherical tank (1) by the last fixed support member (11) on its top and the following fixed support member (10) of bottom in said; And interior spherical tank (3) and outside be provided with stacked inner bracing member (5) between the spherical tank (1); Be coated with heat-insulating material (2) on the outer surface of spherical tank (3) in said; The outer surface of outer spherical tank (1) is provided with stiffener (4); Stiffener (4) is welded with upper supporting column (6) by the positive cut structure in equator; Upper supporting column (6) is connected and fixed by heat-barrier material (8) and lower supporting rod (9), between upper supporting column (6) and lower supporting rod (9), is connected with pull bar (7).
2. high vacuum multiple layer heat insulation deep cooling according to claim 1 bivalve spherical storage tank; It is characterized in that: said stacked inner bracing member (5) comprises the innermost layer lamination (16) of the middle lamination (15) of stacked inner bracing member, stacked inner bracing member and the outermost layer lamination (17) of stacked inner bracing member; Be connected with the fit structure of groove by boss between the innermost layer lamination (16) of stacked inner bracing member and the middle lamination (15) of stacked inner bracing member; Be connected with the fit structure of groove by boss between the middle lamination (15) of stacked inner bracing member and the outermost layer lamination (17) of stacked inner bracing member; The innermost layer lamination (16) of stacked inner bracing member fits with interior spherical tank (3) outer surface, and the outermost layer lamination (17) of stacked inner bracing member fits with outer spherical tank (1) inner surface.
3. high vacuum multiple layer heat insulation deep cooling according to claim 1 bivalve spherical storage tank; It is characterized in that: said upward fixed support member (11) comprises the interior supporting disk (18) of fixed support member; The adiabatic blocking materials (19) of last fixed support member and the outer supporting disk (20) of last fixed support member; One end of the adiabatic blocking materials (19) of last fixed support member is installed in the groove of interior supporting disk (18) of fixed support member, and the other end of the adiabatic blocking materials (19) of last fixed support member is installed in the groove of outer supporting disk (20) of fixed support member.
4. high vacuum multiple layer heat insulation deep cooling according to claim 1 bivalve spherical storage tank; It is characterized in that: said fixed support member (10) down comprises interior supporting disk, the adiabatic blocking materials of following fixed support member and the outer supporting disk of following fixed support member of fixed support member down; One end of the adiabatic blocking materials of following fixed support member is installed on down in the groove of interior supporting disk of fixed support member, and the other end of the adiabatic blocking materials of following fixed support member is installed on down in the groove of outer supporting disk of fixed support member.
5. high vacuum multiple layer heat insulation deep cooling according to claim 1 bivalve spherical storage tank is characterized in that: said pull bar (7) is fixed on the ring beam structure basis with lower supporting rod (9).
6. high vacuum multiple layer heat insulation deep cooling according to claim 1 bivalve spherical storage tank is characterized in that: said thermoinsulation material (2) is built up with interval mode one by one by two-sided metallized film (12) and glass fiber paper (13).
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Cited By (7)
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| CN103343875A (en) * | 2013-06-17 | 2013-10-09 | 武汉一冶钢结构有限责任公司 | Double-layer spherical tank and hoisting method thereof |
| CN104061432A (en) * | 2014-06-26 | 2014-09-24 | 大连理工大学 | Independent liquefied natural gas (LNG) experiment tank device |
| CN104747900A (en) * | 2015-03-20 | 2015-07-01 | 甘肃蓝科石化高新装备股份有限公司 | Low-temperature double-ball spherical tank liquid distribution system and precooling method |
| CN106382455A (en) * | 2016-09-05 | 2017-02-08 | 荆门宏图特种飞行器制造有限公司 | Vertical cryogenic container |
| CN108139027A (en) * | 2015-10-29 | 2018-06-08 | 川崎重工业株式会社 | Vacuum heat-insulation constructs |
| CN110686757A (en) * | 2018-07-04 | 2020-01-14 | 中国石油天然气股份有限公司 | Gas flow primary standard device |
| CN110758776A (en) * | 2019-10-28 | 2020-02-07 | 西安交通大学 | Low-temperature propellant on-orbit zero-evaporation passive heat-insulation storage tank |
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| CN110686757A (en) * | 2018-07-04 | 2020-01-14 | 中国石油天然气股份有限公司 | Gas flow primary standard device |
| CN110758776A (en) * | 2019-10-28 | 2020-02-07 | 西安交通大学 | Low-temperature propellant on-orbit zero-evaporation passive heat-insulation storage tank |
| CN110758776B (en) * | 2019-10-28 | 2021-01-15 | 西安交通大学 | Low-temperature propellant on-orbit zero-evaporation passive heat-insulation storage tank |
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