阅读说明：本技术 一种超低温介质用夹层低热传导支撑结构及超低温介质容器 (Interlayer low-heat-conduction supporting structure for ultralow-temperature medium and ultralow-temperature medium container ) 是由 刘延杰 陈燕山 毛海涛 金维国 谭磊 于 2021-07-05 设计创作，主要内容包括：本发明公开了一种超低温介质用夹层低热传导支撑结构及超低温介质容器,涉及超低温介质存储或转运技术领域,包括拉杆、环形过渡板、径向套管和封管环板,所述封管环板设置在内容器中,所述拉杆横向设置,且拉杆的一端固定在封管环板上,另一端依次贯穿内容器的侧壁和外筒体的侧壁而固定在外筒体的外壁上,所述径向套管套设在拉杆上,且径向套管的一端固定在封管环板上,另一端贯穿内容器的侧壁且通过环形过渡板固定在内容器的外壁上。本发明的有益效果适用于对低温绝热性能要求极高的超低温介质储存容器,具有热桥长、热阻大的优点,具有超低漏热量的效果。(The invention discloses an interlayer low-heat-conduction supporting structure for an ultralow-temperature medium and an ultralow-temperature medium container, and relates to the technical field of ultralow-temperature medium storage or transportation. The invention has the advantages of long thermal bridge and large thermal resistance, and is suitable for the ultralow temperature medium storage container with extremely high requirement on low temperature heat insulation performance, and has ultralow heat leakage effect.)

1. An interlayer low heat conduction supporting structure for an ultralow temperature medium is arranged in an ultralow temperature medium container, the ultralow temperature medium container comprises an inner container (13) and an outer cylinder (14), it is characterized by comprising a pull rod (1), an annular transition plate (2), a radial sleeve (3) and a pipe sealing ring plate (4), the pipe sealing ring plate (4) is arranged in the inner container (13), the pull rod (1) is transversely arranged, one end of the pull rod (1) is fixed on the tube sealing ring plate (4), the other end of the pull rod penetrates through the side wall of the inner container (13) and the side wall of the outer cylinder body (14) in sequence and is fixed on the outer wall of the outer cylinder body (14), the radial sleeve (3) is sleeved on the pull rod (1), one end of the radial sleeve (3) is fixed on the pipe sealing ring plate (4), and the other end of the radial sleeve penetrates through the side wall of the inner container (13) and is fixed on the outer wall of the inner container (13) through the annular transition plate (2).

2. The sandwich low heat conduction support structure for the ultra-low temperature medium according to claim 1, further comprising an annular heat insulating member (6), a cylindrical support (9), and a cover plate (11), wherein the cylindrical support (9) is penetratingly disposed on the outer cylinder (14), the annular heat insulating member (6) is disposed inside the cylindrical support (9), one end of the pull rod (1) located at the outer cylinder (14) is sequentially disposed inside the cylindrical support (9) through the bottom wall of the cylindrical support (9) and the annular heat insulating member (6), and the cover plate (11) is disposed at the top end of the cylindrical support (9) to seal the end of the pull rod (1) inside the cylindrical support (9).

3. The sandwich low heat-conduction support structure for ultra-low temperature media according to claim 2, further comprising a metal elastic member (7), wherein the metal elastic member (7) is disposed in the cylindrical support (9) and outside the annular heat insulator (6), and the tie bar (1) is disposed through the metal elastic member (7).

4. The interlayer low heat conduction support structure for ultralow temperature media according to claim 2, further comprising a radiation-proof cover (10), wherein the radiation-proof cover (10) is arranged in the cylindrical support (9) and is sleeved on the end of the pull rod (1).

5. The laminated low heat-conductive support structure for ultra-low temperature media of claim 4, wherein said radiation-proof cover (10) is made of aluminum foil and glass fiber paper.

6. The sandwich low heat conduction support structure for ultralow temperature media according to claim 1 is characterized in that the outer walls of the pull rod (1) and the radial sleeve (3) are provided with heat insulation winding layers (12).

7. The laminated low heat-conductive support structure for ultralow temperature media according to claim 6, wherein the heat-insulating winding layer (12) is made of a combination of aluminum foil, glass fiber paper and flame-retardant paper.

8. The sandwich low heat conduction support structure for ultralow temperature media according to claim 1 is characterized in that said tie rods (1) and radial sleeves (3) are made of austenitic stainless steel material.

9. An ultralow-temperature medium container comprising the interlayer low-thermal-conductivity support structure for ultralow-temperature media according to any one of claims 1 to 8.

10. An ultra-low temperature medium container as claimed in claim 9, wherein the ultra-low temperature medium container is provided with four interlayer low thermal conductivity support structures located on the same horizontal plane along the circumferential direction, two of the interlayer low thermal conductivity support structures for ultra-low temperature medium are symmetrically arranged with the central line as the symmetry axis, and have an included angle of 30 ° with the central line, and the other two interlayer low thermal conductivity support structures for ultra-low temperature medium are also symmetrically arranged with the same central line as the symmetry axis, and have an included angle of 45 ° with the central line.

Technical Field

The invention relates to the technical field of ultralow temperature medium storage or transportation, in particular to an interlayer low heat conduction support structure for ultralow temperature medium and an ultralow temperature medium container.

Background

At present, vacuum insulation type cryogenic storage and transportation pressure vessels such as conventional liquid nitrogen (77K grade) storage tanks, tank cars or tanks usually adopt the form of a traditional sandwich supporting structure formed by combining stainless steel materials and epoxy resin materials, and the purpose is to reduce the heat leakage of the sandwich supporting structure caused by heat conduction.

The quality of the insulation of the cryogenic medium storage or transfer vessel generally depends on how much heat is transferred between the inner vessel and the outer shell. The heat transfer is mainly composed of three parts: heat conduction of the heat insulating layer, convection heat transfer of vacuum interlayer gas molecules and heat conduction of the interlayer pipeline and the support. The heat transfer brought by the former two modes is well solved by adopting a mature high-vacuum multilayer winding heat insulation mode, and the heat transfer of the interlayer support depends on a support material and a support structure, so the optimal design of the interlayer support structure becomes the key of the good heat insulation performance of the low-temperature liquid storage container.

With the development of the technology, the application of the ultralow temperature medium is gradually widened, and for the ultralow temperature medium storage and transportation pressure container with the temperature lower than that of liquid nitrogen, the conventional support structure cannot meet the strict heat leakage requirement, so that the design of the ultralow heat leakage interlayer support structure is the key for ensuring the normal use of the storage and transportation container.

Disclosure of Invention

The present invention is directed to solve at least one of the problems of the prior art, and to provide an ultra-low temperature medium container and an interlayer low thermal conductivity support structure for an ultra-low temperature medium.

The technical solution of the invention is as follows:

the utility model provides a low heat-conduction bearing structure of intermediate layer for ultra-low temperature medium, its sets up in ultra-low temperature medium container, ultra-low temperature medium container includes inner container and outer barrel, its characterized in that crosses cab apron, radial sleeve pipe and a tub ring flange including pull rod, annular, in the container including tub ring flange sets up, the pull rod transversely sets up, and the one end of pull rod is fixed on a tub ring flange, and the other end runs through the lateral wall of inner container and the lateral wall of outer barrel in proper order and fixes on the outer wall of outer barrel, radial sleeve pipe cover is established on the pull rod, and radial sleeve pipe's one end is fixed on a tub ring flange, and the other end runs through the lateral wall of inner container and crosses the cab apron through the annular and fix on the outer wall of inner container.

The pull rod is positioned at one end of the outer cylinder body and sequentially penetrates through the bottom wall of the cylindrical support and the annular heat-insulating piece to be arranged in the cylindrical support, and the cover plate is arranged at the top end of the cylindrical support to seal the end part of the pull rod in the cylindrical support.

In a specific embodiment of the present invention, the thermal insulation device further includes a metal elastic element disposed in the cylindrical support and located outside the annular thermal insulation member, and the pull rod is disposed through the metal elastic element.

According to a specific embodiment of the invention, the anti-radiation pull rod further comprises an anti-radiation cover, wherein the anti-radiation cover is arranged in the cylindrical support and sleeved at the end part of the pull rod.

In one embodiment of the present invention, the radiation-proof cover is made of aluminum foil and glass fiber paper.

In a specific embodiment of the present invention, the outer walls of the pull rod and the radial sleeve are both provided with heat insulation winding layers.

In one embodiment of the invention, the heat-insulating winding layer is made of a combination of aluminum foil, glass fiber paper and flame-retardant paper.

In a specific embodiment of the present invention, the pull rod and the radial sleeve are made of austenitic stainless steel materials.

An ultra-low temperature medium container comprising any one of the above-described laminated low thermal conductivity support structures for ultra-low temperature media.

In a specific embodiment of the present invention, four interlayer low thermal conductivity support structures for the ultra-low temperature medium are disposed on the same horizontal plane along a circumferential direction of the ultra-low temperature medium container, two of the interlayer low thermal conductivity support structures for the ultra-low temperature medium are symmetrically disposed with respect to a center line as a symmetry axis and have an included angle of 30 ° with the center line, and the other two interlayer low thermal conductivity support structures for the ultra-low temperature medium are also symmetrically disposed with respect to the same center line as the symmetry axis and have an included angle of 45 ° with the center line.

The invention has at least one of the following beneficial effects:

according to the interlayer supporting structure for the low-temperature medium, the pull rod and the radial sleeve can be connected into a heat conduction path through the annular transition plate and the pipe sealing ring plate to form series thermal resistance, the pull rod and the radial sleeve are made of austenitic stainless steel materials, the cross section area is small, the length is longer, the annular heat insulation piece with ultralow heat conductivity is adopted as contact heat conduction, on the premise that the strength of the pull rod is guaranteed, the thermal bridge of the whole interlayer low heat conduction structure is long, the thermal resistance is large, the thermal bridge and the thermal resistance of the whole interlayer supporting structure for the ultra-low-temperature medium are greatly increased, and the heat leakage quantity of the structure is greatly reduced. The influence of temperature difference stress on the stainless steel pull rod is effectively solved through the metal elastic element, and the service life of the interlayer supporting structure is prolonged; the heat radiation is effectively reduced through the heat insulation winding layer and the radiation-proof cover, and the heat leakage quantity is greatly reduced. In summary, through the structure, the interlayer supporting structure for the low-temperature medium is suitable for the ultralow-temperature medium storage container with extremely high requirements on low-temperature heat insulation performance, has the advantages of long heat bridge and high heat resistance, and has the heat insulation effect of ultralow heat leakage.

The ultralow temperature medium container can be used for storing or transporting ultralow temperature media with extremely high requirements on low temperature heat insulation performance, the interlayer supporting structures for the ultralow temperature media are distributed at 4 positions in the circumferential direction on the same vertical plane, the upper part 2 is symmetrical about a vertical center line and has an included angle of 30 degrees with the vertical center line, the lower part 2 is symmetrical about the vertical center line and has an included angle of 45 degrees with the vertical center line, the interlayer supporting structures are reasonably arranged, at least 2 pull rods are ensured to bear pulling force simultaneously in any movement direction, the strength of the interlayer supporting structures is ensured, the structural strength of the ultralow temperature medium container is improved, and the ultralow heat leakage heat insulation effect is achieved.

Drawings

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

FIG. 3 is an enlarged schematic view of portion B of FIG. 1;

reference numerals: 1. stainless steel pull rod, 2 annular transition plate, 3 radial sleeve, 4 pipe sealing ring plate, 5 locking nut, 6 annular heat insulation piece, 7 metal elastic element, 8 fastening nut, 9 cylindrical support, 10 radiation-proof cover, 11 cover plate, 12 heat insulation winding layer, 13 inner container, 14 outer cylinder.

Detailed Description

The present invention will be described in further detail with reference to the following examples, but the present invention is not limited to the following examples.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

As shown in fig. 1 to 3, the present embodiment provides a low thermal conductivity support structure for an ultra-low temperature medium interlayer, which is disposed in an ultra-low temperature medium container, wherein the ultra-low temperature medium container generally includes an inner container 13 and an outer cylinder 14, and a vacuum interlayer is formed between the inner container 13 and the outer cylinder 14. The supporting structure is arranged in the ultralow-temperature medium container, can play a supporting role, and has a low heat conduction effect, so that the normal use of the storage and transportation container can be ensured, and the specific structure of the supporting structure is specifically described below.

This bearing structure includes that pull rod 1, annular cross cab apron 2, radial sleeve pipe 3 and tube sealing ring board 4, tube sealing ring board 4 sets up including in container 13, pull rod 1 transversely sets up, and the lateral wall that tube sealing ring board 4 was run through to the one end of pull rod 1 and fix on tube sealing ring board 4, and the other end runs through the lateral wall of inner container 13 and the lateral wall of outer barrel 14 in proper order and fixes on the outer wall of outer barrel 14, specifically, the processing at the both ends of pull rod 1 has fastening connection screw thread, and the interior hexagonal is used in screwing up in head stamping processing to the both ends of pull rod 1 are fixed through lock nut 5 and fastening nut 8 respectively. The radial sleeve 3 is sleeved on the pull rod 1, specifically, the radial sleeve 3 is arranged between the tube sealing ring plate 4 and the inner container 13, one end of the radial sleeve 3 is fixed on the tube sealing ring plate 4, and the other end of the radial sleeve 3 penetrates through the side wall of the inner container 13 and is fixed on the outer wall of the inner container 13 through the annular transition plate 2.

In the embodiment, the pull rod 1 and the radial sleeve 3 can be connected into a heat conduction path through the annular transition plate 2 and the pipe sealing ring plate 4 to form series thermal resistance, so that the thermal bridge is effectively lengthened and the thermal resistance is increased.

In the embodiment, the device also comprises an annular heat insulating member 6, a cylindrical support 9 and a cover plate 11, wherein the cylindrical support 9 is arranged on the outer cylinder body 14 in a penetrating way, the annular heat insulating member 6 is arranged inside the cylindrical support 9, one end of the pull rod 1, which is positioned on the outer cylinder body 14, is arranged in the cylindrical support 9 in sequence through the bottom wall of the cylindrical support 9 and the annular heat insulating member 6, the annular heat insulating member 6 is fixed on the pull rod 1 through a fastening nut 8, and the cover plate 11 is arranged at the top end of the cylindrical support 9 to seal the end part of the pull rod 1 in the cylindrical support 9. The annular insulating member 6 is at ambient temperature range under normal operating conditions, greatly increasing the range of materials of ultralow thermal conductivity that can be selected.

In the present embodiment, the thermal insulation device further comprises a metal elastic element 7, the metal elastic element 7 is arranged in the cylindrical support 9 and is positioned outside the annular thermal insulation member 6, the pull rod 1 is arranged through the metal elastic element 7, and the metal elastic element 7 is fixed on the pull rod 1 through a fastening nut 8. The stainless steel pull rod 1 can bear the temperature difference stress caused by the expansion with heat and the contraction with cold of the inner container through the metal elastic element 7, thereby effectively solving the influence of the temperature difference stress on the stainless steel pull rod and prolonging the service life of the interlayer supporting structure.

In this embodiment, the pull rod further comprises a radiation-proof cover 10, wherein the radiation-proof cover 10 is arranged in the cylindrical support 9 and is sleeved on the end portion of the pull rod 1. The radiation-proof cover is made by combining aluminum foil and glass fiber paper, covers the stainless steel pull rod 1 and the fastening nut 8, and reflects the radiation heat from the cylindrical support 9 and the cover plate 11, thereby effectively reducing the heat radiation and greatly reducing the heat leakage.

In this embodiment, the outer walls of the pull rod 1 and the radial sleeve 3 are both provided with heat insulation winding layers 12. The heat insulation winding layer 12 is made of aluminum foil, glass fiber paper and flame retardant paper in a combined mode, and heat radiation is effectively reduced.

In the embodiment, the pull rod 1 and the radial sleeve 3 are made of austenitic stainless steel materials, so that the cross section area is small, the length is longer, and on the premise of ensuring the strength of the pull rod, the thermal bridge of the whole interlayer low-heat-conduction structure is long, the thermal resistance is large, and the heat leakage quantity of the structure is greatly reduced;

the supporting structure in the embodiment can connect the pull rod 1 and the radial sleeve 3 into a heat conduction path through the annular transition plate 2 and the pipe sealing ring plate 4 to form a series thermal resistance, thereby effectively lengthening a thermal bridge and increasing the thermal resistance, effectively solving the influence of temperature difference stress on the stainless steel pull rod through the metal elastic element, prolonging the service life of the interlayer supporting structure, effectively reducing thermal radiation through the heat insulation winding layer and the radiation-proof cover, greatly reducing heat leakage, greatly increasing the thermal bridge and the thermal resistance of the whole interlayer supporting structure for ultralow-temperature media by utilizing the small sectional area and the long length of the stainless steel pull rod 1 and the radial sleeve 3 per se and combining the adoption of the annular heat insulation piece with ultralow heat conductivity as contact heat conduction, realizing the heat insulation effect of ultralow heat leakage, thereby being capable of being used in ultralow-temperature medium storage or transportation containers and not only playing a supporting role, and the heat insulation effect of ultralow heat leakage is realized.

As shown in fig. 1 to 3, the present embodiment also provides an ultra-low temperature medium container including the above-mentioned interlayer low thermal conductivity support structure for an ultra-low temperature medium.

The ultra-low temperature medium container comprises an inner container 13 and an outer cylinder 14, and a vacuum interlayer is arranged between the inner container 13 and the outer cylinder 14. The inner container 13 is arranged in the tube sealing ring plate 4, the pull rod 1 is transversely arranged, one end of the pull rod 1 penetrates through the side wall of the tube sealing ring plate 4 and is fixed on the tube sealing ring plate 4, the other end of the pull rod 1 penetrates through the side wall of the inner container 13 and the side wall of the outer barrel 14 in sequence and is fixed on the outer wall of the outer barrel 14, specifically, the two ends of the pull rod 1 are processed with fastening connecting threads, and the head is processed by punching to screw up an inner hexagon for screwing, so that the two ends of the pull rod 1 are fixed through the locking nut 5 and the fastening nut 8 respectively. The radial sleeve 3 is sleeved on the pull rod 1, specifically, the radial sleeve 3 is arranged between the tube sealing ring plate 4 and the inner container 13, one end of the radial sleeve 3 is fixed on the tube sealing ring plate 4, and the other end of the radial sleeve 3 penetrates through the side wall of the inner container 13 and is fixed on the outer wall of the inner container 13 through the annular transition plate 2. The cylindrical support 9 is arranged on the outer cylinder 14 in a penetrating way, the annular heat-insulating piece 6 is arranged inside the cylindrical support 9, one end of the pull rod 1, which is positioned on the outer cylinder 14, is arranged in the cylindrical support 9 in a penetrating way through the bottom wall of the cylindrical support 9 and the annular heat-insulating piece 6, the annular heat-insulating piece 6 is fixed on the pull rod 1 through a fastening nut 8, and the cover plate 11 is arranged at the top end of the cylindrical support 9 to seal the end part of the pull rod 1 in the cylindrical support 9. The annular insulating member 6 is at ambient temperature range under normal operating conditions, greatly increasing the range of materials of ultralow thermal conductivity that can be selected. The metal elastic element 7 is arranged in the cylindrical support 9 and positioned outside the annular heat insulating part 6, the pull rod 1 penetrates through the metal elastic element 7, and the metal elastic element 7 is fixed on the pull rod 1 through a fastening nut 8. The stainless steel pull rod 1 can bear the temperature difference stress caused by the expansion with heat and the contraction with cold of the inner container through the metal elastic element 7, thereby effectively solving the influence of the temperature difference stress on the stainless steel pull rod and prolonging the service life of the interlayer supporting structure. The radiation-proof cover 10 is arranged in the cylindrical support 9 and sleeved on the end part of the pull rod 1. The radiation-proof cover is made by combining aluminum foil and glass fiber paper, covers the stainless steel pull rod 1 and the fastening nut 8, and reflects the radiation heat from the cylindrical support 9 and the cover plate 11, thereby effectively reducing the heat radiation and greatly reducing the heat leakage. And heat insulation winding layers 12 are arranged on the outer walls of the pull rod 1 and the radial sleeve 3. The heat insulation winding layer 12 is made of aluminum foil, glass fiber paper and flame retardant paper in a combined mode, and heat radiation is effectively reduced. The pull rod 1 and the radial sleeve 3 are made of austenitic stainless steel materials, the cross section area is small, the length is longer, and on the premise of ensuring the strength of the pull rod, the thermal bridge of the whole interlayer low-heat-conduction structure is long, the thermal resistance is large, and the heat leakage quantity of the structure is greatly reduced;

in this embodiment, the ultra-low temperature medium container is provided with four on the circumferencial direction and is located same horizontal plane the low heat-conduction bearing structure of intermediate layer for the ultra-low temperature medium, wherein two the low heat-conduction bearing structure of intermediate layer for the ultra-low temperature medium uses the central line to set up as symmetry axis symmetry, and is alpha with the contained angle of central line, and alpha equals 30, two in addition the low heat-conduction bearing structure of intermediate layer for the ultra-low temperature medium also uses same central line to set up as symmetry axis symmetry, and is beta with the contained angle of central line, and beta equals 45 to ensure to have 2 pull rods 1 to bear the pulling force simultaneously on any direction of motion, intermediate layer bearing structure intensity can be guaranteed.

The ultralow temperature medium container in this embodiment has stable in structure, and has the adiabatic effect of ultralow heat leakage.

The above are merely characteristic embodiments of the present invention, and do not limit the scope of the present invention in any way. All technical solutions formed by equivalent exchanges or equivalent substitutions fall within the protection scope of the present invention.