CN114183685A - Bearing type heat insulation supporting structure of low-temperature storage tank - Google Patents
Bearing type heat insulation supporting structure of low-temperature storage tank Download PDFInfo
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- CN114183685A CN114183685A CN202111242850.9A CN202111242850A CN114183685A CN 114183685 A CN114183685 A CN 114183685A CN 202111242850 A CN202111242850 A CN 202111242850A CN 114183685 A CN114183685 A CN 114183685A
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- heat insulation
- honeycomb
- low
- supporting structure
- type heat
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- 238000009413 insulation Methods 0.000 title claims abstract description 75
- 239000010410 layer Substances 0.000 claims abstract description 56
- 239000011241 protective layer Substances 0.000 claims abstract description 15
- 241000264877 Hippospongia communis Species 0.000 claims description 77
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 8
- 239000011496 polyurethane foam Substances 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 229920002379 silicone rubber Polymers 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 4
- 238000002310 reflectometry Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims 2
- 239000000463 material Substances 0.000 description 5
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 239000003380 propellant Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
Images
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
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
- F17C1/12—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge with provision for thermal insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
- F17C1/02—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge involving reinforcing arrangements
- F17C1/04—Protecting sheathings
-
- 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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0104—Shape cylindrical
-
- 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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/03—Orientation
- F17C2201/035—Orientation with substantially horizontal main axis
-
- 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
- F17C2203/0333—Polyurethane
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a bearing type heat insulation supporting structure of a low-temperature storage tank, which comprises: a protective layer, a heat insulation bearing layer and a buffer layer; wherein the protective layer is connected with the heat insulation bearing layer; the heat insulation bearing layer is connected with the buffer layer; the buffer layer is connected with one end of the low-temperature storage tank. The invention can bear larger normal load and has better heat insulation capability.
Description
Technical Field
The invention belongs to the technical field of repeated use and world reciprocation, and particularly relates to a bearing type heat insulation supporting structure of a low-temperature storage tank.
Background
The repeatedly used carrier is generally of an inner-outer double-layer structure, wherein the inner layer structure is a storage tank, and the outer layer structure is an aircraft structure. Unlike traditional rocket tanks which mainly bear axial loads, the air-to-ground repeated use of the carrier tank not only needs to bear the axial loads, but also needs to experience normal overload in the flight process, which puts higher requirements on the normal bearing capacity of the tank, particularly the connecting part of the tank. At present, the storage tanks are connected in a flange or pull rod mode, and the storage tanks are required to be provided with structures such as connecting flanges or connecting lugs, so that the structure of the connecting part of the storage tanks is complex and the weight is increased.
The new generation rocket engine mostly adopts low-temperature propellants such as liquid hydrogen, liquid oxygen, methane and the like, and provides higher heat insulation requirements for the storage tank and the connecting parts thereof in order to ensure that the low-temperature propellants in the storage tank are within the allowable use temperature range. The traditional storage box mostly adopts foaming materials for heat insulation, and has no bearing capacity although the heat insulation effect is good.
Disclosure of Invention
The technical problem solved by the invention is as follows: the low-temperature power-driven bearing type heat-insulation supporting structure overcomes the defects of the prior art, can bear large normal load, has good heat insulation capability, is simple and reliable in manufacturing scheme and strong in universality, and is very suitable for a connecting form of the low-temperature power-driven storage tank needing normal supporting.
The purpose of the invention is realized by the following technical scheme: a force-bearing type heat insulation supporting structure of a low-temperature storage tank, comprising: a protective layer, a heat insulation bearing layer and a buffer layer; wherein the protective layer is connected with the heat insulation bearing layer; the heat insulation bearing layer is connected with the buffer layer; the buffer layer is connected with one end of the low-temperature storage tank.
In the bearing type heat insulation supporting structure of the low-temperature storage tank, the protective layer is made of glass fiber cloth, the thickness h1 is 0.2mm, and the protective layer is coated on the heat insulation bearing layer through low-temperature silicon rubber.
In the bearing type heat insulation supporting structure of the low-temperature storage tank, the outer surface of the protective layer is provided with a waterproof coating and a high-reflectivity coating.
In the bearing type heat insulation supporting structure of the low-temperature storage box, the heat insulation bearing layer comprises a honeycomb sandwich, a T300 composite material panel and polyurethane foam plastic; wherein the outer surface of the honeycomb sandwich is provided with a T300 composite material panel; the polyurethane foam plastic is filled in the honeycomb sandwich, the honeycomb sandwich is connected by a plurality of honeycombs, and the cross section of each honeycomb is in an equilateral hexagon shape.
In the above force-bearing type heat insulation support structure of the low-temperature storage tank, the thickness of the force-bearing type heat insulation support structure is obtained by the following formula:
wherein h is the thickness of the bearing type heat insulation supporting structure, T1 is the outer layer temperature of the bearing type heat insulation supporting structure, T2 is the inner layer temperature of the bearing type heat insulation supporting structure, S is the side length of the honeycomb, T is the wall thickness of the honeycomb, D is the diameter of the storage tank, L is the width of the heat insulation layer, and C is a constant.
In the bearing type heat insulation supporting structure of the low-temperature storage box, the equivalent density of the honeycomb sandwich is obtained by the following formula:
where ρ iscIs the equivalent density, rho, of the honeycomb coresThe density of the honeycomb sandwich is shown, S is the side length of the honeycomb, and t is the wall thickness of the honeycomb.
In the bearing type heat insulation supporting structure of the low-temperature storage box, the compressive strength of the honeycomb sandwich is obtained by the following formula:
wherein σcCompressive strength of honeycomb core, sigmaSCompressive strength of honeycomb core, ESThe compression elastic modulus of the honeycomb sandwich is shown, S is the side length of the honeycomb, t is the wall thickness of the honeycomb, and K is a constant.
In the bearing type heat insulation supporting structure of the low-temperature storage tank, the thickness of the buffer layer is 2-3 mm.
In the bearing type heat insulation supporting structure of the low-temperature storage tank, the side length of the honeycomb is 5-10 mm.
In the bearing type heat insulation supporting structure of the low-temperature storage tank, the wall thickness of the honeycomb is 0.1-0.3 mm.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention provides a low-temperature storage tank heat insulation support structure which connects storage tanks in a support mode;
(2) the low-temperature storage tank heat insulation supporting structure provided by the invention can effectively insulate heat and bear larger normal load.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic view of an insulated support structure provided by an embodiment of the present invention in connection with a storage tank;
FIG. 2 is a cross-sectional view of an insulating support structure provided by an embodiment of the present invention;
fig. 3 is a schematic view of a thermally insulating load bearing layer provided by an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
FIG. 1 is a schematic view of an insulated support structure provided by an embodiment of the present invention in connection with a storage tank; FIG. 2 is a cross-sectional view of an insulating support structure provided by an embodiment of the present invention. As shown in fig. 1 and 2, the force-bearing type heat insulation supporting structure of the low-temperature storage tank comprises: a protective layer 1, a heat insulation bearing layer 2 and a buffer layer 3; wherein the protective layer 1 is connected with the heat insulation bearing layer 2; the thermally insulating carrier layer 2 is connected to the buffer layer 3. One end of the low-temperature storage tank is provided with a short shell which is connected with the outer layer structure through a bolt, and the other end of the low-temperature storage tank is connected with the outer layer structure through a supporting structure.
The outermost inoxidizing coating that is 1 for the inoxidizing coating of adiabatic bearing structure, the inoxidizing coating is 1 layer glass fiber cloth, and thickness h1 is 0.2mm ═ on adiabatic bearing layer 2 through the coating of low temperature silicone rubber, brushes waterproof coating and high reflectivity coating at outermost, improves bearing structure's waterproof performance and heat reflectivity.
As shown in fig. 3, the insulating and load-bearing layer 2 comprises a honeycomb core, a T300 composite panel 4 and a polyurethane foam 5; wherein, the outer surface of the honeycomb sandwich is provided with a T300 composite material panel 4; the polyurethane foam plastic 5 is filled in the honeycomb sandwich; the honeycomb sandwich is formed by connecting a plurality of honeycombs, wherein the cross section of each honeycomb is in an equilateral hexagon shape.
The middle layer is a heat insulation bearing layer 2, the main structure is a honeycomb sandwich structure, the honeycomb material is phenolic glass fiber reinforced plastics, the structure is an equilateral hexagon, and the equivalent density of the honeycomb structure is rhocThe side length of the honeycomb is S, and the wall thickness of the honeycomb is t; the outermost layer of the honeycomb is a T300 composite material panel 4 structure, the thickness of the panel is 1.5mm, the panel is bonded with the honeycomb structure through low-temperature glue, and the honeycomb and the panel mainly play a bearing role. The honeycomb structure is filled with polyurethane foam 5 having low thermal conductivity, and the heat insulating performance of the whole structure is improved.
The thickness of the insulating support structure can be calculated by the following formula
Wherein h is the thickness of the heat insulation support structure, T1 is the outer layer temperature of the heat insulation support structure, T2 is the inner layer temperature of the heat insulation support structure, S is the length of the honeycomb side which is 5-10mm generally, T is the wall thickness of the honeycomb which is 0.1-0.3mm generally, D is the diameter of the storage tank, L is the width of the heat insulation layer, C is a constant, and 66.5 is taken as the liquid oxygen storage tank.
The formula of the thickness of the heat insulation support structure enables the heat insulation support structure to further bear larger normal load and have better heat insulation capacity.
The equivalent density of the honeycomb structure can be calculated by the following formula
Where ρ iscIs the equivalent density, rho, of the honeycomb structuresThe density of the honeycomb material is shown, S is the length of the honeycomb side which is generally 5-10mm, and t is the thickness of the honeycomb wall which is generally 0.1-0.3 mm.
The formula of the equivalent density of the honeycomb structure enables the honeycomb structure to further bear larger normal load and have better heat insulation capacity.
The compressive strength of the honeycomb structure can be calculated by the following formula
Wherein σcCompressive strength, σ, of honeycomb structuresCompressive strength of honeycomb material, EsThe compression elastic modulus of the honeycomb material is shown, S is the length of the honeycomb side which is generally 5-10mm, t is the thickness of the honeycomb wall which is generally 0.1-0.3mm, K is a constant, and the phenolic glass fiber reinforced plastic is 31.6.
The formula of the compressive strength of the honeycomb structure enables the honeycomb structure to further bear larger normal load and have better heat insulation capacity.
The buffer layer main 3 has the functions of connection and protection, is generally coated with low-temperature silicon rubber at the position of the storage tank needing heat insulation support, has the thickness h2 of 2-3mm, has the functions of connecting the storage tank and the heat insulation bearing layer 2, and has the deformation coordination function, so that the structural damage caused by the inconsistency of low-temperature deformation of the storage tank and honeycomb deformation is avoided.
The buffer layer mainly plays a role in connection and protection, and is generally coated on the part of the storage tank needing to be subjected to heat insulation support by adopting low-temperature silicon rubber; the heat insulation bearing layer is the core of the whole structure and plays a role in heat insulation and bearing, and the framework of the heat insulation bearing layer is of a honeycomb structure and mainly plays a role in bearing; the honeycomb structure is filled with polyurethane foam with low thermal conductivity, and mainly plays a role in heat insulation; the outermost layer is a protective layer and mainly comprises low-temperature glue and glass cloth.
The heat-insulating support structure provided by the invention can bear larger normal load, has better heat-insulating capability, simple and reliable manufacturing scheme and strong universality, and is very suitable for a storage tank connection form which adopts low-temperature power and needs normal support.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make variations and modifications of the present invention without departing from the spirit and scope of the present invention by using the methods and technical contents disclosed above.
Claims (10)
1. A bearing type heat insulation supporting structure of a low-temperature storage tank is characterized by comprising: a protective layer (1), a heat insulation bearing layer (2) and a buffer layer (3); wherein the content of the first and second substances,
the protective layer (1) is connected with the heat insulation bearing layer (2);
the heat insulation bearing layer (2) is connected with the buffer layer (3);
the buffer layer (3) is connected with one end of the low-temperature storage tank.
2. The force-bearing type heat insulation supporting structure of the low-temperature storage box according to claim 1, characterized in that: the protective layer (1) is made of glass fiber cloth, the thickness h1 is 0.2mm, and the protective layer (1) is coated on the heat insulation bearing layer (2) through low-temperature silicon rubber.
3. The force-bearing type heat insulation supporting structure of the low-temperature storage box according to claim 1, characterized in that: the outer surface of the protective layer (1) is provided with a waterproof coating and a high-reflectivity coating.
4. The force-bearing type heat insulation supporting structure of the low-temperature storage box according to claim 1, characterized in that: the heat insulation bearing layer (2) comprises a honeycomb sandwich, a T300 composite material panel (4) and polyurethane foam plastics (5); wherein the content of the first and second substances,
a T300 composite material panel (4) is arranged on the outer surface of the honeycomb sandwich;
the polyurethane foam plastic (5) is filled in the honeycomb sandwich core;
the honeycomb sandwich is formed by connecting a plurality of honeycombs, wherein the cross section of each honeycomb is in an equilateral hexagon shape.
5. The force-bearing type heat insulation supporting structure of the low-temperature storage box according to claim 4, characterized in that: the thickness of the bearing type heat insulation supporting structure is obtained through the following formula:
wherein h is the thickness of the bearing type heat insulation supporting structure, T1 is the outer layer temperature of the bearing type heat insulation supporting structure, T2 is the inner layer temperature of the bearing type heat insulation supporting structure, S is the side length of the honeycomb, T is the wall thickness of the honeycomb, D is the diameter of the storage tank, L is the width of the heat insulation layer, and C is a constant.
6. The force-bearing type heat insulation supporting structure of the low-temperature storage box according to claim 4, characterized in that: the equivalent density of the honeycomb sandwich is obtained by the following formula:
where ρ iscIs the equivalent density, rho, of the honeycomb coresThe density of the honeycomb sandwich is shown, S is the side length of the honeycomb, and t is the wall thickness of the honeycomb.
7. The force-bearing type heat insulation supporting structure of the low-temperature storage box according to claim 4, characterized in that: the compressive strength of the honeycomb sandwich is obtained by the following formula:
wherein σcCompressive strength of honeycomb core, sigmaSCompressive strength of honeycomb core, ESThe compression elastic modulus of the honeycomb sandwich is shown, S is the side length of the honeycomb, t is the wall thickness of the honeycomb, and K is a constant.
8. The force-bearing type heat insulation supporting structure of the low-temperature storage box according to claim 1, characterized in that: the thickness of the buffer layer (3) is 2-3 mm.
9. The force-bearing type heat insulation supporting structure of the low-temperature storage box according to claim 4, characterized in that: the side length of the honeycomb is 5-10 mm.
10. The force-bearing type heat insulation supporting structure of the low-temperature storage box according to claim 4, characterized in that: the wall thickness of the honeycomb is 0.1-0.3 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111242850.9A CN114183685B (en) | 2021-10-25 | 2021-10-25 | Bearing type heat insulation supporting structure of low-temperature storage box |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111242850.9A CN114183685B (en) | 2021-10-25 | 2021-10-25 | Bearing type heat insulation supporting structure of low-temperature storage box |
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| CN114183685B CN114183685B (en) | 2023-12-12 |
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Cited By (1)
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| Publication number | Publication date |
|---|---|
| CN114183685B (en) | 2023-12-12 |
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