A heat shield for deep cooling and heat insulation

Abstract

The utility model discloses a heat insulation cover for cryogenic insulation, which relates to the field of cryogenic insulation. The device comprises a top cover, a heat insulation screen and a vertical support assembly. The top cover is used to be arranged above a heat exchanger, and the projection area of ​​the top cover after being supported and unfolded is greater than or equal to the projection area of ​​the heat exchanger. At least two heat insulation screens are provided, one end of each of which is connected to the circumference of the top cover, and the other end is used to abut against the bottom of the cold box, and all heat insulation screens are connected in sequence to form an annular body for surrounding the outside of the heat exchanger. Each heat insulation screen is supported and unfolded in the vertical direction by a detachably connected vertical support assembly, and the height after the support is unfolded is greater than the height of the heat exchanger. The top cover and all heat insulation screens are made of flexible insulation materials. By making the top cover and the heat insulation screens both made of flexible insulation materials, they can be folded, which is convenient for storage and transportation, thereby improving the applicability of the product and reducing the manufacturing cost and transportation cost of the product.

Description

Technical Field

[0001] The utility model relates to the field of cryogenic insulation, in particular to a heat insulation cover used for cryogenic insulation. Background Art

[0002] With the widespread application of cryogenic liquids, cryogenic vacuum insulated containers (hereinafter referred to as "cryogenic containers") have developed rapidly. At present, cryogenic containers have developed into the fastest growing and most promising industry in the pressure vessel industry.

[0003] As a set of high-efficiency, heat-insulating and cold-preserving low-temperature heat exchange equipment, cold boxes are widely used in the cryogenic separation process. For example, in the cryogenic separation process of petroleum cracking gas, cold boxes working at about -100 to -140°C are used. It consists of a compact and efficient plate heat exchanger and a gas-liquid separator. Because low temperatures are very easy to dissipate cold, extremely strict heat insulation is required, so the heat exchanger and separator are packed in a box-shaped object with insulating materials, which is called a cold box.

[0004] At present, a hard screen made of metal material is usually used on the outside of the heat exchanger to achieve thermal insulation and cold preservation. However, this is not only complicated to shape and costly, but also inconvenient to install and transport. Utility Model Content

[0005] In view of the defects existing in the prior art, the purpose of the utility model is to provide a heat insulation cover for deep cold insulation, so as to solve the problems of using metal hard screens for insulation and cold preservation in the prior art, which are complex to shape, high cost, and inconvenient to install and transport.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] The present application provides a heat insulation cover for cryogenic insulation, comprising:

[0008] A top cover, which is arranged above the heat exchanger, wherein the projected area of ​​the top cover support after unfolding is greater than or equal to the projected area of ​​the heat exchanger;

[0009] At least two heat insulation screens are connected to the circumference of the top cover at one end, and the other end is used to abut against the bottom of the cold box, and all the heat insulation screens are connected in sequence to form an annular body for surrounding the outside of the heat exchanger. Each of the heat insulation screens is supported and unfolded in the vertical direction by a detachably connected vertical support assembly, and the height after the support is unfolded is greater than the height of the heat exchanger;

[0010] Wherein, the top cover and all the heat insulation screens are made of flexible heat insulation material.

[0011] In some optional embodiments, the vertical support assembly includes:

[0012] At least one vertical fixing member is arranged along the length direction of the heat insulation screen;

[0013] A vertical support rod is detachably connected to the vertical fixing member.

[0014] In some optional embodiments, the vertical fixing member comprises a plurality of strip-shaped cloth bags arranged at intervals along the length direction of the heat insulation screen, and the strip-shaped cloth bags have a receiving cavity for the vertical support rod to pass through.

[0015] In some optional embodiments, the top cover is supported and unfolded by a detachably connected transverse support assembly, and the transverse support assembly is provided with a clamping portion that is clamped with the end of the vertical support rod.

[0016] In some optional embodiments, the top cover is circular, the heat insulation screen is rectangular, the short side of the heat insulation screen is connected to the peripheral side of the top cover, and the long side of the heat insulation screen is connected to the long side of the adjacent heat insulation screen.

[0017] In some optional embodiments, an annular fixing member is provided on the circumferential side of the top cover, and the lateral support assembly includes at least one support rod connected to the top cover via the annular fixing member.

[0018] In some optional embodiments, the heat insulation screen includes a plurality of sub-screens connected in sequence along the vertical direction, and a plurality of circumferentially arranged tail connection screens connected to the bottom, and all the tail connection screens are connected to the tail support member.

[0019] In some optional embodiments, two adjacent heat insulation screens are connected by a heat insulating tape.

[0020] In some optional embodiments, a connecting piece for connecting to a fixed frame is provided on the outer side wall of the heat insulation screen.

[0021] In some optional embodiments, the top cover and any one of the heat insulation screens are provided with through holes for the vacuum air pipe to pass through.

[0022] Compared with the prior art, the advantages of the utility model are:

[0023] By making the top cover and the heat insulation screen both of which are made of flexible insulation materials, they can be folded for easy storage and transportation. Regardless of the size and shape of the heat exchanger, different types of heat exchangers can be adapted by adjusting the shape of the top cover and the number of heat insulation screens, thereby improving the applicability of the product and reducing the manufacturing cost and transportation cost of the product. The heat insulation screen is supported by a vertical support assembly, and after support, it can be connected to other fixed structures to maintain a stable shape, so that it can be covered on the outside of the heat exchanger, solving the problem of using a metal hard screen for insulation in the prior art, which is complex to shape, high cost, and inconvenient to install and transport. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 This is a schematic structural diagram of a heat insulation cover for deep cooling and heat insulation according to the utility model;

[0026] Figure 2 for Figure 1 Schematic diagram of the structure of the middle insulation screen;

[0027] Figure 3 for Figure 1 Schematic diagram of the structure of the middle lateral support assembly.

[0028] In the figure: 1, top cover; 11, through hole; 12, fixing piece; 2, lateral support assembly; 3, heat insulation screen; 31, sub-screen; 32, tail connecting screen; 33, connecting piece; 4, vertical support assembly; 41, vertical fixing piece; 42, vertical support rod; 5, tail support piece. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0030] The following is a further detailed description of an embodiment of a heat insulation cover for deep cooling and heat insulation of the utility model in conjunction with the accompanying drawings.

[0031] like Figures 1 to 3 As shown, the present application provides a heat insulation cover for cryogenic insulation, including a top cover 1, a heat insulation screen 3 and a vertical support assembly 4. The top cover 1 and multiple heat insulation screens 3 are spliced, and the heat insulation screens 3 are supported and shaped by the vertical support assembly 4 to form a cover body for covering the outside of the heat exchanger.

[0032] Specifically, the top cover 1 is used to be arranged above the heat exchanger, and the projected area of ​​the top cover after being supported and unfolded is greater than or equal to the projected area of ​​the heat exchanger; at least two heat insulation screens 3 are provided, one end of each of which is connected to the circumference of the top cover 1, and the other end is used to abut the bottom of the cold box, and all the above-mentioned heat insulation screens 3 are connected in sequence to form an annular main body for surrounding the outside of the heat exchanger, each of the above-mentioned heat insulation screens 3 is supported and unfolded in the vertical direction by a detachably connected vertical support assembly 4, and the height after being supported and unfolded is greater than the height of the heat exchanger; wherein, the above-mentioned top cover 1 and all the above-mentioned heat insulation screens 3 are made of flexible insulation material.

[0033] It can be understood that since the top cover 1 and the heat shield 3 are both made of flexible heat-insulating materials, they can be folded for easy storage and transportation. Regardless of the size and shape of the heat exchanger, the shape of the top cover 1 and the number of heat shields 3 can be adjusted to adapt to different types of heat exchangers, thereby improving the applicability of the product and reducing the manufacturing and transportation costs of the product. However, flexible materials are not easy to shape, so the heat shield 3 is supported by a vertical support assembly 4, which can be connected to other fixed structures after support to maintain a stable shape, so that it can be covered on the outside of the heat exchanger.

[0034] For example, when a cubic heat shield is needed, the top cover 1 can be set to a rectangle of suitable size, the heat shield 3 can be set to at least four pieces, the four heat shields 3 are connected in sequence and arranged to form a cubic structure, and then the top cover 1 is placed on the top of the cubic structure, and the four heat shields 3 are supported and expanded into four square structures by the vertical support assembly 4, thereby forming a sealed cubic structure for covering the outside of the heat exchanger.

[0035] Exemplarily, in this example, the top cover 1 and the heat shield 3 are both made of high vacuum multi-layer insulation material.

[0036] In some optional embodiments, the vertical support assembly 4 includes at least one vertical fixing member 41 and a vertical support rod 42. The vertical fixing member 41 is arranged along the length direction of the heat insulation screen 3. The vertical support rod 42 is detachably connected to the vertical fixing member 41.

[0037] It can be understood that the heat shield 3 is supported in the vertical direction by connecting the vertical support rod 42 with the vertical fixing member 41. Preferably, the length direction of the vertical support rod 42 is consistent with the length direction of the heat shield 3. The vertical support rod 42 can be formed by splicing a plurality of sub-rods.

[0038] Optionally, the vertical fixing member 41 may be a plurality of snap-fit ​​members arranged on the heat insulation screen 3 along the vertical direction, and the snap-fit ​​members are snap-fitted with the vertical support rods 42 .

[0039] In this example, if Figure 2As shown, the vertical fixing member 41 comprises a plurality of strip-shaped cloth bags arranged at intervals along the length direction of the heat insulation screen 3 , and the strip-shaped cloth bags have a receiving cavity for the vertical support rod 42 to pass through.

[0040] By setting the vertical fixing member 41 as a strip cloth bag, the vertical support rod 42 passes through the accommodating cavity of the strip cloth bag and is detachably connected to the heat insulation screen 3. In this way, the cloth bag made of the same flexible material will not cause structural damage to the flexible heat insulation screen and the cost is lower.

[0041] Of course, the length direction of the strip-shaped cloth bags is consistent with the length direction of the heat insulation screen 3, and the interval arrangement is to reduce the amount of material used and facilitate the vertical support rod 42 to pass through.

[0042] In some optional embodiments, the top cover 1 is supported and unfolded by a detachably connected transverse support assembly 2 , and the transverse support assembly 2 is provided with a clamping portion that is clamped with the end of the vertical support rod 42 .

[0043] It can be understood that in order to further stabilize the shape of the heat shield, the flexible top cover 1 is also supported. The vertical support rod 42 is used to support the shape of the heat shield 3 in the vertical direction, and after being fixed, it is clamped with the clamping part of the horizontal support assembly 2, thereby further fixing the relative position between the top cover 1 and the heat shield 3.

[0044] Optionally, the clamping portion may be a clamping hole that matches the size of the vertical support rod 42 .

[0045] In some optional embodiments, the top cover 1 is circular, the heat insulation screen 3 is rectangular, the short sides of the heat insulation screen 3 are connected to the peripheral side of the top cover 1 , and the long sides of the heat insulation screen 3 are connected to the long sides of adjacent heat insulation screens 3 .

[0046] That is to say, in this embodiment, the heat insulation cover is a cylindrical structure with a closed top, and a plurality of heat insulation screens 3 are connected in sequence to form an annular main body.

[0047] Furthermore, an annular fixing piece is provided on the circumferential side of the top cover 1 , and the lateral support assembly 2 includes at least one support rod connected to the top cover 1 via the annular fixing piece.

[0048] Since the top cover 1 is circular, in order to facilitate the support and expansion of the top cover 1, an annular fixing member, such as an annular cloth bag, for the support rod to pass through and fix is ​​provided on the circumference of the top cover 1. The support rod can be one or more spliced ​​together and has a certain deformation ability.

[0049] In other embodiments, the fixing member may also be a support rod arranged radially along the top cover 1 , and in this case, the length of the support rod is the same as the diameter of the top cover 1 .

[0050] In some optional embodiments, the heat insulation screen 3 includes a plurality of sub-screens 31 connected in sequence along the vertical direction, and a plurality of circumferentially arranged tail connecting screens 32 connected to the bottom, and all tail connecting screens 32 are connected to the tail support 5 .

[0051] It can be understood that the sub-screens 31 are connected in sequence along the vertical direction, so that the requirements of different heights of the cover can be adapted by setting the number of sub-screens 31. A plurality of circumferentially arranged sub-screens 31 are provided at the bottom and connected to the tail support 5, thereby fixing the bottom shape of the heat insulation screen 3 so as to fit closely with the bottom surface of the cold box.

[0052] It should be noted that the tail connection screen 32 is preferably a structure with the same shape as the lateral support assembly 2, such as an annular support rod. A plurality of tail connection screens 32 are arranged circumferentially, and their purpose is to adapt to the annular structure when connected with the tail support member 5 to avoid wrinkles during connection.

[0053] In some optional embodiments, two adjacent heat insulation screens 3 are connected by a heat insulating tape.

[0054] In some optional embodiments, a connecting piece 33 for connecting to a fixed frame is provided on the outer side wall of the heat insulation screen 3 .

[0055] Exemplarily, the connecting member 33 is a flexible cloth strip, so as to facilitate connection and disassembly with the fixed frame without causing structural damage to the heat insulation screen 3 .

[0056] There can be multiple connectors 33, and the specific number and position are not limited here. Those skilled in the art can make corresponding selections according to the needs of the connection.

[0057] In some optional embodiments, through holes for the vacuum air pipe to pass through are provided on the top cover 1 and any one of the heat insulation screens 3 .

[0058] It is understandable that after the top cover 1 and the heat shield 3 are assembled, the inner space thereof needs to be evacuated to reduce heat convection and improve the effect of deep cooling and heat insulation, so through holes are provided to facilitate evacuation. Of course, the through holes need to be sealed after the evacuation is completed.

[0059] The working principle of the embodiment of the present application is as follows: the lateral support assembly 2 is inserted into the fixing part of the top cover 1 to support the top cover 1 to unfold, and after connecting multiple sub-screens 31 in sequence according to the required height to form a heat insulation screen 3, the vertical support rod 42 is inserted into the vertical fixing part 41 to support the heat insulation screen 3 to unfold, and then the two adjacent heat insulation screens 3 are connected to form an annular body by using an insulating tape, and the annular body is connected to the top cover 1, so that it can be covered outside the heat exchanger. After the covering is completed, the heat insulation cover is connected and fixed with other fixing parts by using a connecting piece 33, and the heat insulation cover is vacuumed through the through hole.

[0060] The present application discloses a heat insulation cover for cryogenic insulation. The top cover 1 and the heat insulation screen 3 are both made of flexible insulation materials, so they can be folded for easy storage and transportation. Regardless of the size and shape of the heat exchanger, different types of heat exchangers can be adapted by adjusting the shape of the top cover 1 and the number of heat insulation screens 3, thereby improving the applicability of the product and reducing the manufacturing cost and transportation cost of the product. The heat insulation screen 3 is supported by a vertical support assembly 4, which can be connected to other fixed structures after support to maintain a stable shape, so that it can be covered on the outside of the heat exchanger. The vertical fixing member 41 is set as a strip cloth bag, and the vertical support rod 42 passes through the accommodating cavity of the strip cloth bag and is detachably connected to the heat insulation screen 3, so that the cloth bag made of the same flexible material will not cause structural damage to the flexible heat insulation screen, and the cost is lower. The shape of the heat insulation cover is further kept stable by setting a horizontal support assembly.

[0061] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0062] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0063] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A heat shield for cryogenic insulation, characterized in that: include: A top cover (1) is used for being arranged above the heat exchanger, and the projection area of ​​the top cover (1) after being supported and unfolded is greater than or equal to the projection area of ​​the heat exchanger; At least two heat insulation screens (3) are each connected to the circumference of the top cover (1) at one end, and the other end is used to abut against the bottom of the cold box, and all the heat insulation screens (3) are connected in sequence to form an annular main body for surrounding the outside of the heat exchanger, and each of the heat insulation screens (3) is supported and unfolded in the vertical direction by a detachably connected vertical support assembly (4), and the height after the support is unfolded is greater than the height of the heat exchanger; Wherein, the top cover (1) and all the heat insulation screens (3) are made of flexible heat-insulating material.

2. The heat shield according to claim 1, characterized in that The vertical support assembly (4) comprises: At least one vertical fixing member (41) is arranged along the length direction of the heat insulation screen (3); A vertical support rod (42) is detachably connected to the vertical fixing member (41).

3. The heat shield according to claim 2, characterized in that The vertical fixing member (41) comprises a plurality of strip-shaped cloth bags arranged at intervals along the length direction of the heat insulation screen (3), and the strip-shaped cloth bags have a receiving cavity for the vertical support rod (42) to pass through.

4. The heat shield according to claim 3, characterized in that The top cover (1) is supported and unfolded by a detachably connected transverse support assembly (2), and the transverse support assembly (2) is provided with a clamping portion that is clamped with the end of the vertical support rod (42).

5. The heat shield according to claim 4, characterized in that The top cover (1) is circular, the heat insulation screen (3) is rectangular, the short side of the heat insulation screen (3) is connected to the peripheral side of the top cover (1), and the long side of the heat insulation screen (3) is connected to the long side of an adjacent heat insulation screen (3).

6. The heat shield according to claim 5, characterized in that An annular fixing member (12) is provided on the circumferential side of the top cover (1), and the lateral support assembly (2) comprises at least one support rod connected to the top cover (1) via the annular fixing member.

7. The heat shield according to claim 4, characterized in that The heat insulation screen (3) comprises a plurality of sub-screens (31) connected in sequence along the vertical direction, and a plurality of circumferentially arranged tail connection screens (32) connected to the bottom, and all tail connection screens (32) are connected to the tail support member (5).

8. The heat shield according to claim 1, wherein: Two adjacent heat insulation screens (3) are connected by a heat insulation tape.

9. The heat shield according to claim 1, wherein: A connecting piece (33) for connecting to a fixed frame is provided on the outer side wall of the heat insulation screen (3).

10. The heat shield according to claim 1, wherein: A through hole (11) for a vacuum air pipe to pass through is provided on the top cover (1) and any one of the heat insulation screens (3).

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