阅读说明：本技术 用于保温容器的真空层结构及液氧储存容器 (Vacuum layer structure for heat insulation container and liquid oxygen storage container ) 是由 刘颖 尹岚 刘昊楠 于 2021-06-16 设计创作，主要内容包括：本申请公开了一种用于保温容器的真空层结构及液氧储存容器,该用于保温容器的真空层结构,设于内胆和外胆之间,包括：分别涂设在外胆内侧和内胆外侧的第一防辐射涂层和第二防辐射涂层,以及,从内至外依次设置在所述第二防辐射涂层上的吸附层、保温复合材料层；所述保温复合材料层和第一防辐射涂层之间形成真空区。本申请达到了利用第一防辐射涂层和第二防辐射涂层来作为屏拦结构,减少辐射传热的目的,从而实现了在达到同样的保温效果时可减少保温复合层材料使用,降低真空层厚度的技术效果,进而解决了相关技术的真空层结构中仅依靠保温复合层来减少热传导实现保温,导致真空层的空间过大,保温容器较为笨重的问题。(The application discloses a vacuum layer structure and liquid oxygen storage container for heat preservation container should be used for heat preservation container's vacuum layer structure to locate between inner bag and the outer courage, include: the radiation-proof composite material comprises a first radiation-proof coating and a second radiation-proof coating which are respectively coated on the inner side of an outer liner and the outer side of an inner liner, and an adsorption layer and a heat-insulating composite material layer which are sequentially arranged on the second radiation-proof coating from inside to outside; and a vacuum area is formed between the heat-insulating composite material layer and the first radiation-proof coating. This application has reached and has utilized first radiation protection coating and second radiation protection coating to come as the screen to block the structure, reduces the purpose of radiation heat transfer to realized reducible heat preservation composite layer material when reaching same heat preservation effect and used, reduced the technological effect of vacuum layer thickness, and then solved only rely on the heat preservation composite layer to reduce heat-conduction and realize keeping warm in the vacuum layer structure of correlation technique, lead to the space on vacuum layer too big, the problem that the heat preservation container is heavier.)

1. The utility model provides a vacuum layer structure for heat preservation container, locates between inner bag and the outer courage, its characterized in that includes: the radiation-proof composite material comprises a first radiation-proof coating and a second radiation-proof coating which are respectively coated on the inner side of an outer liner and the outer side of an inner liner, and an adsorption layer and a heat-insulating composite material layer which are sequentially arranged on the second radiation-proof coating from inside to outside;

and a vacuum area is formed between the heat-insulating composite material layer and the first radiation-proof coating.

2. The vacuum layer structure for the heat preservation container as claimed in claim 1, wherein the first radiation protection coating and the second radiation protection coating are coated on the outer container and the inner container so as to make the surfaces of the outer container and the inner container microscopically flat.

3. The vacuum layer structure for an insulated container according to claim 2, wherein the adsorption layer comprises: for adsorbing Ag molecules and H₂Molecule, CO₂Molecule, CH₄Molecular sieves and activated carbon;

the heat-insulating composite material layer is a composite structure which is formed by overlapping the flame-retardant layer, the aluminum foil layer and the glass fiber layer for multiple times according to the overlapping sequence; the vacuum area is formed between the flame-retardant layer and the first radiation protection coating.

4. A liquid oxygen storage container is characterized by comprising an inner container and an outer container; wherein the content of the first and second substances,

a vacuum layer is arranged between the inner container and the outer container, and the inner container and the outer container are connected through a connecting piece;

a plurality of annular grooves protruding towards the inner side of the outer container are formed in the outer side of the outer container along the circumferential direction of the outer container; the annular groove corresponds to the vacuum layer;

the vacuum layer comprises a first radiation-proof coating and a second radiation-proof coating which are respectively coated on the inner side and the outer side of the inner container, and an adsorption layer and a heat-insulation composite material layer which are sequentially arranged on the second radiation-proof coating from inside to outside;

and a vacuum area is formed between the heat-insulating composite material layer and the first radiation-proof coating.

5. The liquid oxygen storage container of claim 4, wherein the first radiation protective coating and the second radiation protective coating are coated on the outer liner and the inner liner to microscopically flatten the surfaces of the outer liner and the inner liner.

6. The liquid oxygen storage container of claim 5, wherein the adsorbent layer comprises: for adsorbing Ag molecules and H₂Molecule, CO₂Molecule, CH₄Molecular sieves and activated carbon;

the heat-insulating composite material layer is a composite structure which is formed by overlapping the flame-retardant layer, the aluminum foil layer and the glass fiber layer for multiple times according to the overlapping sequence; the vacuum area is formed between the flame-retardant layer and the first radiation protection coating.

7. The liquid oxygen storage container according to claim 4, wherein the outer container comprises an integrally formed outer container body and an outer container cover fixed to an upper end of the outer container body, and the inner container is disposed in the outer container body;

the inner container comprises an integrally formed inner container body and an inner container cover fixed at the upper end of the inner container body;

the inner container and the outer container are both made of low-temperature aluminum alloy.

8. The liquid oxygen storage container according to claim 7, further comprising: the flange connecting seats are arranged on the inner container and the outer container, and the connecting pieces are arranged on the inner container and the outer container; wherein the content of the first and second substances,

the first end of the connecting piece is connected with a flange connecting seat flange on the outer liner, and the second end of the connecting piece is connected with a flange connecting seat flange on the inner liner;

and a sealing assembly is arranged between the first end and the second end of the connecting piece and the corresponding flange connecting seat.

9. The liquid oxygen storage container according to claim 8, wherein the connector end has an insertion portion for insertion into a flange connection socket;

a first connecting surface, a second connecting surface and a third connecting surface which are in a step structure are arranged on the side of the inserting part ring;

and a first sealing area, a second sealing area and a third sealing area are respectively formed between the first connecting surface, the second connecting surface and the third connecting surface and the flange connecting seat.

10. The liquid oxygen storage container according to claim 9, wherein the first sealing area, the second sealing area and the third sealing area are distributed in sequence in a direction toward the flange connection seat;

the sealing assembly comprises low-temperature glue arranged in the first sealing area, a low-temperature-resistant O-shaped ring arranged in the second sealing area and a low-temperature sealing element arranged in the third sealing area.

Technical Field

The application relates to the technical field of heat preservation storage, in particular to a vacuum layer structure for a heat preservation container and a liquid oxygen storage container.

Background

The heat preservation container is used for preserving heat of a stored medium and reducing phase change of the stored medium caused by temperature influence. For example, in order to keep the storage area at a low temperature as a heat-insulating container, the liquid oxygen storage container needs to prevent the liquid oxygen from volatilizing due to heat transfer. The prior liquid oxygen storage container adopts a vacuum multilayer heat insulation mode for heat preservation, and a vacuum layer heat insulation layer is arranged between the inner container and the outer container. In the related art, the vacuum layer structure generally only comprises the aluminum foil layer and the heat-preservation composite layer, and in order to achieve a higher heat-preservation effect, the thicknesses of the aluminum foil layer and the heat-preservation composite layer are larger, so that the space of the vacuum layer is too large, the liquid oxygen container is heavy, and the heat conductivity of the protection composite layer in the related art is also higher.

Aiming at the problems that the space of a vacuum layer is too large and a heat-insulating container is heavy due to the fact that heat conduction is reduced by only depending on a heat-insulating composite layer in a vacuum layer structure of the related art to realize heat insulation, an effective solution is not provided at present.

Disclosure of Invention

The main purpose of this application is to provide a vacuum layer structure and liquid oxygen storage container for heat preservation container to only rely on the heat preservation composite bed to reduce heat-conduction and realize heat preservation among the vacuum layer structure of solution correlation technique, lead to the space on vacuum layer too big, the relatively bulky problem of heat preservation container.

In order to achieve the above object, the present application provides a vacuum layer structure for an insulation container, which is provided between an inner container and an outer container, and includes: the radiation-proof composite material comprises a first radiation-proof coating and a second radiation-proof coating which are respectively coated on the inner side of an outer liner and the outer side of an inner liner, and an adsorption layer and a heat-insulating composite material layer which are sequentially arranged on the second radiation-proof coating from inside to outside; and a vacuum area is formed between the heat-insulating composite material layer and the first radiation-proof coating.

Furthermore, the first radiation-proof coating and the second radiation-proof coating are coated on the outer liner and the inner liner, so that the surfaces of the outer liner and the inner liner are microscopically flat.

Further, the adsorption layer includes: for adsorbing Ag molecules and H₂Molecule, CO₂Molecule, CH₄Molecular sieves and activated carbon; the heat-insulating composite material layer is a composite structure which is formed by overlapping the flame-retardant layer, the aluminum foil layer and the glass fiber layer for multiple times according to the overlapping sequence; the vacuum area is formed between the flame-retardant layer and the first radiation protection coating.

According to another aspect of the present application, there is provided a liquid oxygen storage container comprising an inner container and an outer container; wherein a vacuum layer is arranged between the inner container and the outer container, and the inner container and the outer container are connected through a connecting piece; a plurality of annular grooves protruding towards the inner side of the outer container are formed in the outer side of the outer container along the circumferential direction of the outer container; the annular groove corresponds to the vacuum layer; the vacuum layer comprises a first radiation-proof coating and a second radiation-proof coating which are respectively coated on the inner side and the outer side of the inner container, and an adsorption layer and a heat-insulation composite material layer which are sequentially arranged on the second radiation-proof coating from inside to outside; and a vacuum area is formed between the heat-insulating composite material layer and the first radiation-proof coating.

Furthermore, the inner container is positioned in the middle of the outer container, and the two groups of annular grooves are symmetrically distributed up and down.

Further, at least three annular grooves are arranged in each group; the inner surface of the annular groove is provided with an arc surface.

Furthermore, the first radiation-proof coating and the second radiation-proof coating are coated on the outer liner and the inner liner, so that the surfaces of the outer liner and the inner liner are microscopically flat.

Further, the adsorption layer includes: for adsorbing Ag molecules and H₂Molecule, CO₂Molecule, CH₄Molecular sieves and activated carbon; the heat-insulating composite material layer is a flame-retardant layerThe aluminum foil layer and the glass fiber layer are sequentially superposed for multiple times to form a composite structure; the vacuum area is formed between the flame-retardant layer and the first radiation protection coating.

Further, the outer container comprises an integrally formed outer container body and an outer container cover fixed at the upper end of the outer container body, and the inner container is arranged in the outer container body;

the inner container comprises an integrally formed inner container body and an inner container cover fixed at the upper end of the inner container body; the inner container and the outer container are both made of low-temperature aluminum alloy.

Furthermore, the lower end face of the outer container body and the upper end face of the outer container cover are both arranged to be planes.

Further, the method also comprises the following steps: the flange connecting seats are arranged on the inner container and the outer container, and the connecting pieces are arranged on the inner container and the outer container; wherein the content of the first and second substances,

the first end of the connecting piece is connected with a flange connecting seat flange on the outer liner, and the second end of the connecting piece is connected with a flange connecting seat flange on the inner liner;

and a sealing assembly is arranged between the first end and the second end of the connecting piece and the corresponding flange connecting seat.

Further, the end part of the connecting piece is provided with an inserting part for being inserted into the flange connecting seat; a first connecting surface, a second connecting surface and a third connecting surface which are in a step structure are arranged on the side of the inserting part ring; and a first sealing area, a second sealing area and a third sealing area are respectively formed between the first connecting surface, the second connecting surface and the third connecting surface and the flange connecting seat.

Furthermore, the first sealing area, the second sealing area and the third sealing area are sequentially distributed along the direction towards the flange connecting seat; the sealing assembly comprises low-temperature glue arranged in the first sealing area, a low-temperature-resistant O-shaped ring arranged in the second sealing area and a low-temperature sealing element arranged in the third sealing area.

Further, the connecting piece is the cavity setting, and the lower extreme and the inner bag intercommunication of connecting piece.

Furthermore, the first end and the second end of the connecting piece are integrally formed with flanges and are connected with corresponding flange connecting seats through the flanges;

the lower end of the outer liner and the lower end of the inner liner are both provided with a supporting seat, the lower end of the outer liner and the lower end of the inner liner are connected through a supporting piece, and the upper end and the lower end of the supporting piece are respectively inserted into the corresponding supporting seats and fixedly connected;

the supporting piece and the connecting piece are made of glass fiber reinforced plastics.

According to another aspect of the present application, there is provided a liquid oxygen supply apparatus comprising the above-described liquid oxygen storage container.

In the embodiment of the application, the vacuum layer structure is arranged between the inner container and the outer container, and is formed by a first radiation-proof coating and a second radiation-proof coating which are respectively coated on the inner side of the outer container and the outer side of the inner container, and an adsorption layer and a heat-insulation composite material layer which are sequentially arranged on the second radiation-proof coating from inside to outside; a vacuum area is formed between the heat-insulating composite material layer and the first radiation-proof coating, the purposes of reducing radiation heat transfer by using the first radiation-proof coating and the second radiation-proof coating as a screen structure are achieved, the technical effects of reducing the use of the heat-insulating composite material and reducing the thickness of a vacuum layer when the same heat-insulating effect is achieved are achieved, and the problems that the space of the vacuum layer is too large and a heat-insulating container is heavy due to the fact that heat conduction is reduced only by the heat-insulating composite layer in the vacuum layer structure of the related art are solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

FIG. 1 is a schematic structural diagram according to an embodiment of the present application;

FIG. 2 is a schematic cross-sectional structural view of a liquid oxygen storage container according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a connector according to an embodiment of the present application;

FIG. 4 is an enlarged schematic view of a portion A of FIG. 3;

wherein, 1 outer courage body, 110 outer courage lid, 111 outer courage body, 2 flange joint seats, 3 annular recess, 4 connecting pieces, 41 inserted portions, 5 annular sunken, 6 supporting seats, 7 vacuum layers, 8 inner bags, 81 inner bag lid, 82 inner bags, 9 support piece, 10 first connecting surfaces, 11 second connecting surfaces, 13 third connecting surfaces, 14 third sealing areas, 15 second sealing areas, 16 first sealing areas, 17 first radiation protection coatings, 18 vacuum areas, 19 heat preservation composite material layers, 191 fire-retardant layer, 192 aluminium foil layer, 193 glass fiber layer, 20 adsorbed layer, 21 second radiation protection coatings.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used.

In this application, the terms "upper", "lower", "inside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "disposed," "provided," "connected," "secured," and the like are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In addition, the term "plurality" shall mean two as well as more than two.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 to 2, an embodiment of the present application provides a vacuum layer 7 structure for an insulation container, where the vacuum layer 7 structure for an insulation container is provided between an inner container 8 and an outer container, and includes: the first radiation-proof coating 17 and the second radiation-proof coating 21 are respectively coated on the inner side of the outer container and the outer side of the inner container 8, and the adsorption layer 20 and the heat-preservation composite material layer 19 are sequentially arranged on the second radiation-proof coating 21 from inside to outside; a vacuum region 18 is formed between the insulating composite layer 19 and the first radiation protective coating 17.

The inner container 8 and the outer container are both provided with certain storage spaces, the inner container 8 is arranged in the storage space in the outer container, and the storage space in the inner container 8 is used for storing liquid oxygen. The inner container 8 and the outer container are spaced to form a vacuum layer 7, and the vacuum layer 7 can be used for realizing heat preservation of the inner container 8, so that volatilization of liquid oxygen caused by temperature change is reduced.

The objects can continuously absorb the radiation energy emitted by other surrounding objects and convert the radiation energy into heat energy when emitting the radiation energy outwards, and the heat transfer process of mutually emitting the radiation energy and absorbing the radiation energy between the objects is called radiation heat transfer. If the radiative heat transfer is between two bodies with different temperatures, the result of the heat transfer is that the high temperature body transfers heat to the low temperature body, and if the two bodies are at the same temperature, the amount of radiative heat transfer between the bodies is equal to zero, but the radiative and absorptive processes between the bodies are still in progress. Thus reducing radiative heat transfer also reduces volatilization of liquid oxygen due to temperature. In the embodiment, the first radiation-proof coating 17 and the second radiation-proof coating 21 are coated on the inner side of the outer container and the outer side of the inner container 8, so that radiation screens are formed on two sides of the vacuum area 18, radiation heat transfer is reduced, a small amount of heat-insulating composite material layers 19 can be used for obtaining a more efficient heat-insulating effect, the thickness of the whole vacuum interlayer is reduced, and the heat-insulating container is more portable. The adsorption layer 20 is mainly used to adsorb free molecules in the vacuum interlayer, thereby further reducing heat transfer.

Convective heat transfer is a fluid heat transfer, such as gas and liquid flow, and restricting the movement of molecules is the best way to control convective heat transfer, so vacuum is the best way to solve convective heat transfer, and the movement between molecules can be reduced by extracting or reducing the molecules in the interlayer, thus solving convective heat transfer. However, since the surfaces of the inner container 8 and the outer container in the related art are not completely flat, some fine scratches may exist, or the microscopic lower surface has pits, and some molecules may be hidden in the scratches and the pits and are difficult to be drawn away, thereby affecting the control of the convection heat transfer.

Therefore, in the embodiment, the first radiation-proof coating 17 and the second radiation-proof coating 21 are coated on the outer liner and the inner liner 8, and scratches and microscopic pits on the surfaces of the inner liner 8 and the outer liner can be filled up due to the use of the coatings, so that the surfaces of the inner liner and the outer liner are smooth, molecules cannot be hidden, the molecules adsorbed on the surfaces of the outer liner and the inner liner 8 can be better decomposed and extracted, the convection heat transfer is further reduced, and the heat-insulating property of the inner liner 8 is improved.

As shown in fig. 1 to 2, the adsorption layer 20 includes: the molecular sieve and the activated carbon are used for adsorbing Ag molecules, H2 molecules, CO2 molecules and CH4 molecules, the molecular sieve and the activated carbon are mixed according to a certain proportion and then evenly paved on the outer surface of the inner container 8, molecules influencing vacuum efficiency can be adsorbed through the molecular sieve and the activated carbon, the vacuumizing time is shortened, the vacuum maintaining time is prolonged, the heat-insulating property is improved, and the aperture of the molecular sieve can be determined according to the actual use environment.

The heat-insulating composite material layer 19 is a composite structure which is repeatedly overlapped according to the overlapping sequence of the flame-retardant layer 191, the aluminum foil layer 192 and the glass fiber layer 193, the flame-retardant layer 191, the aluminum foil layer 192 and the glass fiber layer 193 are all thin paper structures, the heat-insulating composite material layer 19 can be formed by overlapping the flame-retardant paper layer, the aluminum foil layer, the glass fiber layer, the flame-retardant paper layer, the aluminum foil layer and the glass fiber layer in sequence for multiple times, a plurality of reflecting screens are formed by the multiple layers of aluminum foil paper, the radiation heat transfer is reduced, and the glass fiber paper has the characteristic of low heat conductivity, so that the heat conduction can be reduced, and the heat-insulating property is improved; a vacuum region 18 is formed between the flame retardant layer 191 and the first radiation protective coating 17.

As shown in fig. 1 to 2, according to another aspect of the present application, there is provided a liquid oxygen storage container comprising an inner container 8 and an outer container; wherein, a vacuum layer 7 is arranged between the inner container 8 and the outer container, and the inner container 8 and the outer container are connected through a connecting piece 4; a plurality of annular grooves 3 protruding towards the inner side of the outer liner are formed in the outer side of the outer liner along the circumferential direction of the outer liner; the annular groove 3 corresponds to the vacuum layer 7; the vacuum layer 7 comprises a first radiation-proof coating 17 and a second radiation-proof coating 21 which are respectively coated on the inner side of the outer liner and the outer side of the inner liner 8, and an adsorption layer 20 and a heat-insulating composite material layer 19 which are sequentially arranged on the second radiation-proof coating 21 from inside to outside; a vacuum region 18 is formed between the insulating composite layer 19 and the first radiation protective coating 17.

The inner container 8 is fixed in the storage space of the outer container through the connecting piece 4, namely, the inner container 8 is fixedly connected with the outer container through the connecting piece 4, so that the inner container 8 is prevented from generating displacement in the outer container, and the use is influenced. Inner bag 8 in this application and outer courage all adopt the thinner material of light to make, for example, low temperature aluminum alloy, and because vacuum layer 7 has between inner bag 8 and the outer courage, vacuum layer 7's internal pressure is less than outside atmospheric pressure promptly, consequently can extrude outer courage under the effect of atmospheric pressure, if only adopt thin plane aluminum alloy to make alone, can lead to the resistance to compression performance of outer courage relatively poor, can produce the deformation under the atmospheric pressure effect, thereby change vacuum layer 7's structure, influence normal use. Consequently set up a plurality of annular grooves 3 in this application on outer courage, and annular grooves 3 corresponds with vacuum layer 7, form a plurality of strengthening ribs through annular grooves 3 on outer courage, thereby realized still having better resistance to compression performance on thinner material, can effectual reduction lead to the technological effect that the material warp because of the negative pressure effect in 18 regions in vacuum area, and then solved adopt the less strong resistance to compression performance of liquid oxygen storage container that thinner material made among the correlation technique relatively poor, outer courage produces the problem of deformation easily.

In the embodiment, the first radiation-proof coating 17 and the second radiation-proof coating 21 are coated on the inner side of the outer container and the outer side of the inner container 8, so that radiation screens are formed on two sides of the vacuum area 18, radiation heat transfer is reduced, a small amount of heat-insulating composite material layers 19 can be used for obtaining a more efficient heat-insulating effect, the thickness of the whole vacuum interlayer is reduced, and the heat-insulating container is more portable. The adsorption layer 20 is mainly used to adsorb free molecules in the vacuum interlayer, thereby further reducing heat transfer.

As shown in fig. 1 to 2, the inner container 8 is located in the middle of the outer container, and the annular grooves 3 are arranged in two groups and distributed up and down symmetrically. Each group of the annular grooves 3 is provided with at least three annular grooves; the inner surface of the annular groove 3 is provided with a cambered surface.

In this embodiment, the position of the annular groove 3 can be calculated according to the stress point of the outer bladder, so as to find the most suitable reinforcing position. Specifically, because 8 both ends of inner bag are arc portion, the middle part is straight section of thick bamboo portion, consequently interval between straight section of thick bamboo portion and outer courage can obviously be less than the interval between arc portion and the outer courage, vacuum layer 7 that lies in between straight section of thick bamboo portion and the outer courage promptly is less than the vacuum layer 7 that lies in between arc portion and the outer courage, consequently, the position atress that outer courage corresponds 8 arc portions of inner bag can be greater than other positions, so can set up annular groove 3 in the position that outer courage and 8 arc portions of inner bag correspond, thereby effectively improve the atress performance of outer courage.

As shown in fig. 1 to 2, the inner container 8 is located in the middle of the outer container, the annular grooves 3 are arranged in two groups and are symmetrically distributed up and down, and at least three annular grooves 3 are arranged in each group; the inner surface of the annular groove 3 is provided with a cambered surface.

The inner container 8 is positioned in the middle of the outer container, so that the vacuum layer 7 is arranged between the inner container 8 and the outer container in a balanced manner, each group of annular grooves 3 is at least three, stable reinforcing structures can be formed, and the inner surface of each annular groove 3 is an arc surface, so that the structural strength can be further reinforced.

Terminal surface and outer courage lid 110 up end all are provided with towards inboard convex annular sunken 5 under the outer courage body 1, and terminal surface and outer courage lid 110 up end set up to the horizontal plane except that the part of annular sunken 5 under the outer courage body 1, can strengthen the structural strength of the outer courage body 1 and outer courage lid 110 through annular sunken 5, and the setting of horizontal plane then is convenient for the cooperation of the outer courage body 1 and other connecting pieces 4.

As shown in fig. 1 to 2, the first radiation-proof coating 17 and the second radiation-proof coating 21 are coated on the outer liner and the inner liner 8, and scratches and microscopic pits on the surfaces of the inner liner 8 and the outer liner can be filled up due to the use of the coatings, so that the surfaces of the inner liner and the outer liner are smooth, molecules cannot be hidden, the molecules adsorbed on the surfaces of the outer liner and the inner liner 8 can be better decomposed and extracted, the convection heat transfer is further reduced, and the heat-insulating property of the inner liner 8 is improved.

As shown in fig. 1 to 2, the adsorption layer 20 includes: the molecular sieve and the activated carbon are used for adsorbing Ag molecules, H2 molecules, CO2 molecules and CH4 molecules, the molecular sieve and the activated carbon are mixed according to a certain proportion and then evenly paved on the outer surface of the inner container 8, molecules influencing vacuum efficiency can be adsorbed through the molecular sieve and the activated carbon, the vacuumizing time is shortened, the vacuum maintaining time is prolonged, the heat-insulating property is improved, and the aperture of the molecular sieve can be determined according to the actual use environment.

The heat-insulating composite material layer 19 is a composite structure which is repeatedly overlapped according to the overlapping sequence of the flame-retardant layer 191, the aluminum foil layer 192 and the glass fiber layer 193, the flame-retardant layer 191, the aluminum foil layer 192 and the glass fiber layer 193 are all thin paper structures, the heat-insulating composite material layer 19 can be formed by overlapping the flame-retardant paper layer, the aluminum foil layer, the glass fiber layer, the flame-retardant paper layer, the aluminum foil layer and the glass fiber layer in sequence for multiple times, a plurality of reflecting screens are formed by the multiple layers of aluminum foil paper, the radiation heat transfer is reduced, and the glass fiber paper has the characteristic of low heat conductivity, so that the heat conduction can be reduced, and the heat-insulating property is improved; a vacuum region 18 is formed between the flame retardant layer 191 and the first radiation protective coating 17.

As shown in fig. 1 to 2, the outer liner comprises an integrally formed outer liner body 1 and an outer liner cover 110 fixed on the upper end of the outer liner body 1, and the inner liner 8 is arranged in the outer liner body 1; the inner container 8 comprises an integrally formed inner container body 82 and an inner container cover 81 fixed at the upper end of the inner container body 82; the inner container 8 and the outer container are both made of low-temperature aluminum alloy.

Specifically, it should be noted that, inner bag 8 among the correlation technique is similar with outer courage structure, all include the straight section of thick bamboo section and fix the arc end cover at straight section of thick bamboo section both ends, the welding is fixed between straight section of thick bamboo section and the arc end cover that corresponds, consequently, two welding beads have respectively on inner bag 8 and the outer courage, it is higher to lead to the leakage rate, consequently divide into integrated into one piece's outer courage body 1 and fix the outer courage lid 110 on outer courage body 1 with outer courage body in this embodiment, outer courage body 1 includes straight section of thick bamboo section and arc end cover, compare in relevant outer courage structure promptly, outer courage welding bead in this application is reduced to one by two, inner bag 8 is also adjusted into one by two similarly, make the leakage rate obtain effectively reducing.

As shown in fig. 1 to 2, both the lower end surface of the outer container body 1 and the upper end surface of the outer container cover 110 are disposed as planes. Outer courage both ends among the correlation technique are the cambered surface, lead to the installation comparatively difficult, can't effectively master the plane size when the butt joint, consequently set up outer courage body 1 up end and outer courage lid 110 up end into the plane in this application, set up the both ends of being about to outer courage into the plane, make it more easy to various spatial structure of external butt joint.

As shown in fig. 1 to 2, the method further includes: the flange connecting seats 2 are arranged on the inner container 8 and the outer container, and the connecting pieces 4 are arranged on the inner container and the outer container; wherein the content of the first and second substances,

the first end of the connecting piece 4 is in flange connection with the flange connecting seat 2 on the outer liner, and the second end of the connecting piece 4 is in flange connection with the flange connecting seat 2 on the inner liner 8;

and sealing components are arranged between the first end and the second end of the connecting piece 4 and the corresponding flange connecting seat 2.

In the related art, the inner container 8 and the outer container are made of stainless steel or aluminum alloy, and the connecting member 4 for connecting the inner container 8 and the outer container is made of the same material because the same material has the same property and is more stably connected. However, if the connecting member 4 is made of stainless steel or aluminum alloy, since the thermal conductivity of this type of material itself is large, effective heat insulation cannot be achieved, which is disadvantageous for the storage of liquid oxygen. Therefore, it is necessary to use a different material with low thermal conductivity, and the different material has different properties from those of the inner container 8 and the outer container, which affects the connection strength, i.e., the pressure-bearing capacity of the material cannot be achieved.

Therefore, as shown in fig. 3 to 4, in the embodiment, the connection structure between the connection member 4 and the inner container 8 and the outer container is improved, specifically, the flange connection seat 2 is arranged on the inner container 8 and the outer container, and the flange connection seat 2 can be integrally formed with the inner container 8 and the outer container, so that the connection points are reduced, and the leakage rate is reduced. The first end and the second end of the connecting piece 4 are respectively connected with the flange connecting seats 2 on the outer container and the inner container 8 in a flange mode, and the connection sealing is realized through a sealing assembly, wherein the connecting piece 4 can be made of materials with low heat conductivity, such as glass fiber reinforced plastics. Realize the connection of connecting piece 4 and inner bag 8, outer courage through flange joint seat 2, for adopting low temperature to glue direct bonding, its joint strength obtains effectively promoting, even adopt with inner bag 8, the different material of outer courage nature also can have the joint strength who meets the requirements.

When connecting piece 4 is the glass steel material, the heat conductivity of reduction material itself that can be very big plays the effect that reduces the evaporation, also can have stable pressure-bearing performance under the effect of flange joint seat 2 simultaneously.

Further, the end of the connecting piece 4 is provided with an inserting part 41 for inserting into the flange connecting seat 2; the insertion part 41 is provided with a first connecting surface 10, a second connecting surface 11 and a third connecting surface 13 which are in a step structure at the ring side; the first connection surface 10, the second connection surface 11 and the third connection surface 13 form a first sealing area 16, a second sealing area 15 and a third sealing area 14, respectively, with the flange connection seat 2.

Specifically, it should be noted that the connecting piece 4 is inserted into the flange connecting seat 2 through the insertion portion 41 at the end portion to further enhance the connecting strength of the two; the first connecting surface 10, the second connecting surface 11 and the third connecting surface 13, which are opened at the ring side of the insertion portion 41, can increase the connecting area between the insertion portion 41 and the flange coupling socket 2, and at the same time, the first sealing region 16, the second sealing region 15 and the third sealing region 14 can be formed, and different sealing materials can be arranged in each sealing region, thereby improving the sealing performance between the connecting member 4 and the flange coupling socket 2 and preventing leakage.

Further, the first sealing area 16, the second sealing area 15 and the third sealing area 14 are distributed in sequence along the direction towards the flange connecting seat 2; the seal assembly includes a low temperature glue disposed in the first sealing region 16, a low temperature resistant O-ring disposed in the second sealing region 15, and a low temperature seal disposed in the third sealing region 14.

Specifically, it should be noted that, also can play sealed effect when realizing connecting piece 4 and flange connecting seat 2 and connecting through low temperature glue, and low temperature resistant O type circle and low temperature sealing member then can play further sealed technological effect of strengthening, and low temperature resistant O type circle and low temperature sealing member all can adopt low temperature resistant rubber circle.

Furthermore, the connecting piece 4 is arranged in a hollow mode, and the lower end of the connecting piece 4 is communicated with the inner container 8.

Furthermore, the first end and the second end of the connecting piece 4 are integrally formed with flanges and are connected with the corresponding flange connecting seats 2 through the flanges;

the lower end of the outer container and the lower end of the inner container 8 are both provided with a supporting seat 6, the lower end of the outer container and the lower end of the inner container 8 are connected through a supporting piece 9, and the upper end and the lower end of the supporting piece 9 are respectively inserted into the corresponding supporting seats 6 and fixedly connected;

the support 9 and the connecting piece 4 are made of glass fibre reinforced plastic.

Specifically, it should be noted that the liquid oxygen storage container realizes the connection and support of the inner container and the two ends of the outer container through the connecting piece and the supporting piece, so as to improve the stability of the whole structure, the connection of the supporting piece and the inner container does not involve the discharge of liquid oxygen, so that the sealing performance can be disregarded, and the heat conduction performance of the supporting piece is emphasized, so that the supporting piece in this embodiment is still made of glass fiber reinforced plastics with low heat conductivity. For further strengthening the connecting piece intensity of the support piece, the inner container and the outer container, the lower end of the outer container and the lower end of the inner container are respectively provided with a supporting seat, the upper end and the lower end of the support piece are respectively inserted into the corresponding supporting seats and are fixedly connected, and the support piece can be fixed in a low-temperature glue bonding mode.

According to another aspect of the present application, there is provided a liquid oxygen supply apparatus comprising the above-described liquid oxygen storage container.

According to another aspect of the present application, there is provided a liquid oxygen supply apparatus comprising the above-described liquid oxygen storage container.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.