Supporting column capable of increasing heat conduction resistance

Abstract

The utility model relates to the technical field of vacuum heat insulation equipment, and discloses a support column for increasing heat conduction resistance, which comprises a vacuum heat insulation assembly. According to the supporting column capable of increasing the heat conduction resistance, heat conduction paths can be increased through the formed triangular holes instead of simple linear conduction, direct conduction of heat flow can be effectively disturbed due to the three-side angles of the triangular holes, heat can be conducted to the outer container from the inner container only through a longer path, and compared with a round or square hole, the heat conduction resistance is greatly improved. Triangular holes can guide the direction of heat flow, the propagation distance of the heat flow can be increased by turning back, so that the heat conduction resistance is improved, a higher heat insulation effect is achieved, the aerogel layer, the vacuum heat insulation plate, the polyurethane foam layer and the second aluminized polyester film are matched with one another, structural distribution of the gradually-changed heat insulation layer can be achieved, and the heat insulation effect is improved. The inner end and the outer end of the supporting column body are made of different materials and have different thicknesses, so that temperature difference transition is smooth, and thermal stress caused by overlarge temperature difference is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vacuum insulation equipment, in particular to a support column with increased thermal resistance. BACKGROUND

[0002] In many vacuum-insulated devices, there are inner and outer shells, and the space between the inner and outer shells is vacuum. The inner shell contains a medium, such as liquid hydrogen storage tank, carbon dioxide storage tank, liquid nitrogen storage tank, etc. The support column is used to fix the inner and outer shells. The heat transfer between the inner and outer shells is mainly the heat conduction of the support column.

[0003] Traditional support columns are usually made of metal materials, which have high strength but also high thermal conductivity, resulting in large heat loss. In addition, the shape of the opening of the support column and the installation method of the thermal resistance structure also affect its thermal conductivity. To solve the above problems, a support column with increased thermal resistance is proposed. CONTENT OF THE INVENTION

[0004] In view of the deficiencies of the prior art, the present application provides a support column with increased thermal resistance, which is based on a low-thermal-conductivity support column with triangular openings and inlaid thermal resistance structures to solve the problems of high thermal conductivity and large heat loss of the support column in the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a support column with increased thermal resistance, comprising a vacuum insulation assembly, the vacuum insulation assembly comprising a support column body and a first heat insulation cavity and a second heat insulation cavity opened in the support column body, a triangular hole is uniformly distributed in the middle section of the support column body, an aerogel layer is bonded to the inner top wall of the first heat insulation cavity, a vacuum insulation board is bonded to the inner bottom wall of the first heat insulation cavity, a polyurethane foam layer is bonded to the inner top wall of the second heat insulation cavity, and a ceramic foam layer is bonded to the inner bottom wall of the second heat insulation cavity. Small vacuum cavities are uniformly distributed in the inside of the support column body.

[0006] By the above scheme, the triangular hole can increase the heat conduction path, instead of simple linear conduction, due to the three angles of the triangular hole, the direct conduction of the heat flow can be effectively interfered, so that the heat must pass through a longer path to conduct from the inner container to the outer container, and compared with the circular or square hole, the triangular hole can guide the heat flow direction and increase its propagation distance by turning back, thereby improving the thermal resistance of heat conduction and achieving higher thermal insulation effect. The gradual thermal isolation layer structure distribution can be realized by the cooperation of the aerogel layer, the vacuum insulation board, the polyurethane foam layer and the second aluminized polyester film. The inner and outer ends of the support column body are designed with different materials and thicknesses, so that the temperature difference transition is smooth, the thermal stress caused by excessive temperature difference is avoided, the long-term stability of the support column body is improved, and the support column body is more practical. Finally, the small vacuum cavity can cooperate with the above components to further reduce the heat conduction of the support column body, thereby increasing the thermal resistance of heat conduction.

[0007] Further, the upper surface of the support column body is fixedly connected with an inner end heat insulation sheet, and the bottom surface of the support column body is fixedly connected with an outer end heat insulation sheet.

[0008] By the above scheme, the inner end heat insulation sheet and the outer end heat insulation sheet can increase the thermal resistance of the support column body at the upper and lower ends, which can effectively reduce the heat transfer from the inner container to the outer container through the support column body, especially when the temperature difference is large, the inner end heat insulation sheet and the outer end heat insulation sheet can provide additional thermal resistance to improve the overall thermal insulation performance.

[0009] Further, the thickness value of the inner end heat insulation sheet is greater than the thickness value of the outer end heat insulation sheet.

[0010] By the above scheme, the size relationship between the inner end heat insulation sheet and the outer end heat insulation sheet is limited, which can facilitate the subsequent gradual heat insulation function.

[0011] Further, the inner wall of the support column body is coated with a first ceramic coating, and the outer surface of the support column body is coated with a second ceramic coating.

[0012] By the above scheme, the first ceramic coating and the second ceramic coating can further improve the thermal resistance of the inner side and the outer side of the support column body, thereby optimizing the overall thermal insulation effect.

[0013] Further, the first heat insulation cavity is located above the second heat insulation cavity, and the thickness value of the first heat insulation cavity is greater than the thickness value of the second heat insulation cavity.

[0014] By the above scheme, the relationship between the first heat insulation cavity and the second heat insulation cavity is limited, which is beneficial to the subsequent gradual heat insulation work.

[0015] Further, the aerogel layer and the vacuum heat insulation plate are provided with a first aluminized polyester film, and the thickness of the aerogel layer is greater than that of the vacuum heat insulation plate.

[0016] Through the above scheme, the first aluminized polyester film can optimize the heat insulation effect between the aerogel layer and the vacuum heat insulation plate, and the thickness of the aerogel layer is greater than that of the vacuum heat insulation plate, which can facilitate the subsequent realization of the function of gradually changing the heat insulation.

[0017] Further, the polyurethane foam layer and the ceramic foam layer are provided with a second aluminized polyester film, the thickness of the polyurethane foam layer is greater than that of the ceramic foam layer, the thickness of the vacuum heat insulation plate is greater than that of the polyurethane foam layer, and the thickness of the first aluminized polyester film is greater than that of the second aluminized polyester film.

[0018] Through the above scheme, the second aluminized polyester film can optimize the heat insulation effect between the polyurethane foam layer and the ceramic foam layer, and the relationship between the aerogel layer, the vacuum heat insulation plate, the polyurethane foam layer and the ceramic foam layer is limited, that is, the thickness decreases from top to bottom, realizing the gradually changing heat insulation performance, making the temperature difference transition smooth, avoiding thermal stress caused by excessive temperature difference, and helping the long-term stability of the support column body.

[0019] Further, the plurality of small vacuum cavities and the plurality of triangular holes are distributed in a staggered manner.

[0020] Through the above scheme, the plurality of small vacuum cavities can further reduce the heat conduction of the support column body, thereby increasing the thermal resistance.

[0021] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0022] The support column for increasing thermal resistance can increase the heat conduction path through the triangular holes, rather than simple linear conduction. Due to the three angles of the triangular hole, the direct conduction of the heat flow can be effectively interfered, so that the heat must pass through a longer path to be conducted from the inner container to the outer container. Compared with circular or square holes, the triangular hole can guide the direction of the heat flow and increase the propagation distance through the turn-back, thereby increasing the resistance of heat conduction and achieving higher heat insulation effect. The aerogel layer, the vacuum heat insulation plate, the polyurethane foam layer and the second aluminized polyester film cooperate with each other to realize the structure distribution of the gradually changing heat insulation layer. The inner and outer ends of the support column body are designed with different materials and thicknesses, so that the temperature difference transition is smooth, avoiding thermal stress caused by excessive temperature difference, and helping the long-term stability of the support column body. It is more practical. Finally, the small vacuum cavities can cooperate with the above components to further reduce the heat conduction of the support column body, thereby increasing the thermal resistance. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a schematic view of an overall plan structure of the structure of the present application;

[0024] Figure 2 is a schematic view of a partial front plan structure of the structure of the present application;

[0025] Figure 3 is a schematic view of a partial sectional plan structure of the structure of the present application;

[0026] Figure 4 is a schematic view of a partial exploded structure of the structure of the present application;

[0027] Figure 5 is a schematic view of a partial plan structure of the structure of the present application.

[0028] In the drawings:

[0029] 1. A vacuum insulation assembly; 101. A support column body; 102. A triangular hole; 103. A first heat insulation cavity; 104. A second heat insulation cavity; 105. An aerogel layer; 106. A first aluminized polyester film; 107. A vacuum insulation plate; 108. A polyurethane foam layer; 109. A second aluminized polyester film; 110. A ceramic foam layer; 111. A small vacuum cavity; 2. An inner end heat insulation sheet; 3. An outer end heat insulation sheet; 4. A first ceramic coating layer; 5. A second ceramic coating layer. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without any creative effort belong to the scope of protection of the present application.

[0031] Please refer to Figure 1 , Figure 3 and Figure 4The support column for increasing thermal resistance in the embodiment includes a vacuum heat insulation assembly 1, the vacuum heat insulation assembly 1 includes a support column body 101 and a first heat insulation cavity 103 and a second heat insulation cavity 104 arranged in the support column body 101, the support column body 101 is preferably made of glass fiber reinforced plastic or carbon fiber reinforced plastic, has low thermal conductivity, the first heat insulation cavity 103 is located above the second heat insulation cavity 104, the thickness value of the first heat insulation cavity 103 is greater than that of the second heat insulation cavity 104, which limits the relationship between the first heat insulation cavity 103 and the second heat insulation cavity 104, is beneficial to subsequent gradual heat insulation work, the middle section of the support column body 101 is provided with uniformly distributed triangular holes 102, the inner top wall of the first heat insulation cavity 103 is bonded with an aerogel layer 105, the inner bottom wall of the first heat insulation cavity 103 is bonded with a vacuum heat insulation plate 107, a first aluminized polyester film 106 is arranged between the aerogel layer 105 and the vacuum heat insulation plate 107, the thickness value of the aerogel layer 105 is greater than that of the vacuum heat insulation plate 107, the first aluminized polyester film 106 can optimize the heat insulation effect between the aerogel layer 105 and the vacuum heat insulation plate 107, and the thickness of the aerogel layer 105 is greater than that of the vacuum heat insulation plate 107, which can facilitate subsequent realization of the function of gradual heat insulation.

[0032] It should be noted that, because the sharp angle and irregular shape of the triangular hole 102 are more interfering to the conduction path of heat flow than the circular or square hole, when the heat is conducted from the inner container above the support column body 101 to the outer container below, the shape of the triangular hole 102 will cause refraction and reflection of heat, so that the heat flow is no longer propagated along a straight line, but along a more tortuous path. Although such design makes the path of heat flow longer, its role is to increase the conduction path of heat flow and hinder the straight flow of heat. In general, the heat conduction path of the circular hole is relatively short, the heat flow propagates along a straight line, resulting in that the heat is more easily conducted through the pore, while the triangular hole 102 causes the heat flow to produce turning, reflection or dispersion effect when passing through the pore through the sharp angle and boundary, so that the heat conduction path is lengthened, the speed of heat transfer is slowed down, and the heat insulation effect is enhanced.

[0033] Please refer to Figure 3 , Figure 4 and Figure 5The inner top wall of the second heat insulation cavity 104 is bonded with a polyurethane foam layer 108, the inner bottom wall of the second heat insulation cavity 104 is bonded with a ceramic foam layer 110, a second aluminized polyester film 109 is arranged between the polyurethane foam layer 108 and the ceramic foam layer 110, the thickness value of the polyurethane foam layer 108 is greater than the thickness value of the ceramic foam layer 110, the thickness value of the vacuum heat insulation plate 107 is greater than the thickness value of the polyurethane foam layer 108, the thickness value of the first aluminized polyester film 106 is greater than the thickness value of the second aluminized polyester film 109, the second aluminized polyester film 109 can optimize the heat insulation effect between the polyurethane foam layer 108 and the ceramic foam layer 110, and the relationship between the aerogel layer 105, the vacuum heat insulation plate 107, the polyurethane foam layer 108 and the ceramic foam layer 110 is limited, from top to bottom, the thickness decreases in turn, the gradual heat insulation performance is realized, the temperature difference transition is smooth, the thermal stress caused by the large temperature difference is avoided, the long-term stability of the support column body 101 is helpful, the inside of the support column body 101 is provided with uniformly distributed small vacuum cavities 111, the small vacuum cavities 111 and the triangular holes 102 are staggered, the small vacuum cavities 111 can further reduce the heat conduction of the support column body 101, thereby increasing the thermal resistance, and the vacuum environment can significantly reduce the contribution of gas molecules to heat conduction, thereby improving the heat insulation performance.

[0034] Please refer to Figure 1 , Figure 2 and Figure 4 The upper surface of the support column body 101 is fixedly connected with an inner end heat insulation sheet 2, and the bottom surface of the support column body 101 is fixedly connected with an outer end heat insulation sheet 3. The inner end heat insulation sheet 2 and the outer end heat insulation sheet 3 are both made of ceramic material. The inner end heat insulation sheet 2 and the outer end heat insulation sheet 3 can increase the thermal resistance of the upper and lower ends of the support column body 101, and can effectively reduce the heat transfer from the inner container to the outer container through the support column body 101. Especially when the temperature difference is large, the inner end heat insulation sheet 2 and the outer end heat insulation sheet 3 can provide additional thermal resistance and improve the overall heat insulation performance. The thickness value of the inner end heat insulation sheet 2 is greater than the thickness value of the outer end heat insulation sheet 3, which limits the size relationship between the inner end heat insulation sheet 2 and the outer end heat insulation sheet 3, and facilitates the subsequent realization of the function of gradual heat insulation. The first ceramic coating 4 and the second ceramic coating 5 can further improve the thermal resistance of the inner side and the outer side of the support column body 101, thereby optimizing the overall heat insulation effect.

[0035] The support column in the embodiment can increase the thermal resistance by the triangular hole 102, which can increase the heat conduction path instead of simple linear conduction. Due to the three angles of the triangular hole 102, the direct conduction of the heat flow can be effectively interfered, so that the heat must pass through a longer path to conduct from the inner container to the outer container. Compared with the circular or square hole, the triangular hole 102 can guide the direction of the heat flow and increase the propagation distance by turning back, thereby improving the resistance of heat conduction and achieving higher thermal insulation effect. The aerogel layer 105, the vacuum insulation board 107, the polyurethane foam layer 108 and the second aluminized polyester film 109 are matched with each other to realize the structural distribution of the gradient heat isolation layer. The inner and outer ends of the support column body 101 are designed with different materials and thicknesses, so that the temperature difference transition is smooth, and the thermal stress concentration caused by excessive temperature difference is avoided, which is helpful to the long-term stability of the support column body 101, and is more practical. Finally, the small vacuum cavity 111 can be matched with the above components to further reduce the heat conduction of the support column body 101, thereby increasing the thermal resistance.

[0036] The working principle of the above embodiment is that the support column body 101 is supported by low thermal conductivity materials such as glass fiber reinforced plastic or carbon fiber reinforced plastic, so that the heat conduction can be reduced from the material itself. The multiple triangular holes 102 on the support column body 101 can interfere with heat transfer by the structure of the triangular hole 102, prolong the heat transfer path, and thus reduce the heat conduction. The multiple triangular holes 102 are distributed in a circular manner along the center point of the support column body 101, which can further optimize the heat insulation performance. The first and second heat insulation cavities 103 and 104 are respectively provided at the two ends of the support column body 101, and the aerogel layer 105, the first aluminized polyester film 106, the vacuum insulation board 107, the polyurethane foam layer 108, the second aluminized polyester film 109 and the ceramic foam layer 110 filled in the first and second heat insulation cavities 103 and 104 are matched with each other to realize the effect of gradient heat insulation, optimize the heat insulation performance of the support column body 101, and effectively slow down the heat conduction by combining materials with different thicknesses and thermal properties. The influence of temperature difference is reduced, which is suitable for low-temperature storage tanks, vacuum insulation equipment and other occasions that require efficient heat insulation, improves the energy efficiency and durability of the support column body 101, and finally sets the small vacuum cavity 111 in the annular support column body 101 to further reduce the heat conduction.

[0037] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the enclosed claims. That is, although the present application is described in terms of particular embodiments and illustrative figures, it should be apparent that the application can be varied in a multitude of ways. Such alterations, many of which will be apparent to those skilled in the art, can be based on current technology, and as such, this application should not be limited to the particular embodiments described herein, but should be understood to include all embodiments that are within the scope of the appended claims and their equivalents.

[0038] While the embodiments of the application have been shown and described herein, it will be understood by those skilled in the art that many changes, modifications, substitutions and alterations to these embodiments can be made without departing from the principles and spirits of the application, which can be limited only by the scope of the appended claims and their equivalents.

Claims

1. A support column for increasing thermal resistance, comprising a vacuum insulation component (1), characterized in that: The vacuum insulation assembly (1) includes a support column body (101) and a first insulation cavity (103) and a second insulation cavity (104) opened inside the support column body (101). The middle section of the support column body (101) is provided with uniformly distributed triangular holes (102). The inner top wall of the first insulation cavity (103) is bonded with an aerogel layer (105). The inner bottom wall of the first insulation cavity (103) is bonded with a vacuum insulation plate (107). The inner top wall of the second insulation cavity (104) is bonded with a polyurethane foam layer (108). The inner bottom wall of the second insulation cavity (104) is bonded with a ceramic foam layer (110). The interior of the support column body (101) is provided with uniformly distributed small vacuum cavities (111).

2. The support column for increasing thermal resistance according to claim 1, characterized in that: An inner heat insulation sheet (2) is fixedly connected to the upper surface of the support column body (101), and an outer heat insulation sheet (3) is fixedly connected to the bottom surface of the support column body (101).

3. A support column for increasing thermal resistance according to claim 2, characterized in that: The thickness of the inner heat insulation sheet (2) is greater than the thickness of the outer heat insulation sheet (3).

4. A support column for increasing thermal resistance according to claim 1, characterized in that: The inner wall of the support column body (101) is coated with a first ceramic coating (4), and the outer surface of the support column body (101) is coated with a second ceramic coating (5).

5. A support column for increasing thermal resistance according to claim 1, characterized in that: The first heat insulation cavity (103) is located above the second heat insulation cavity (104), and the thickness of the first heat insulation cavity (103) is greater than the thickness of the second heat insulation cavity (104).

6. A support column for increasing thermal resistance according to claim 1, characterized in that: A first aluminized polyester film (106) is provided between the aerogel layer (105) and the vacuum insulation plate (107), and the thickness of the aerogel layer (105) is greater than the thickness of the vacuum insulation plate (107).

7. A support column for increasing thermal resistance according to claim 6, characterized in that: A second aluminized polyester film (109) is disposed between the polyurethane foam layer (108) and the ceramic foam layer (110). The thickness of the polyurethane foam layer (108) is greater than that of the ceramic foam layer (110). The thickness of the vacuum insulation board (107) is greater than that of the polyurethane foam layer (108). The thickness of the first aluminized polyester film (106) is greater than that of the second aluminized polyester film (109).

8. A support column for increasing thermal resistance according to claim 1, characterized in that: The multiple small vacuum cavities (111) and the multiple triangular holes (102) are staggered.

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