Low-temperature double-layer storage tank

Abstract

The invention provides a low-temperature double-layer storage tank. The low-temperature double-layer storage tank comprises an outer tank body, an inner tank body, an inner supporting assembly and an outer supporting assembly. The inner tank body is accommodated in the outer tank body; the inner supporting assembly comprises a plurality of inner supports arranged at intervals in the axial direction of the inner tank body, the tops of the inner supports are attached to the periphery of the inner tank body, and the bottoms of the inner supports extend downwards to penetrate out of the outer tank body. The multiple inner supports are divided into inner sliding supports and inner fixed supports, the inner sliding supports can move relative to the inner tank body in the axial direction of the inner tank body, and the inner fixed supports are fixedly connected with the inner tank body; the outer supporting assembly comprises a plurality of outer supports; the outer supports and the inner supports are arranged in a one-to-one correspondence mode, the outer supports are arranged on the outer sides of the inner supports in a sleeving mode respectively, the tops of the outer supports are attached to and fixed to the bottom of the outer tank body in a sealed mode, and the bottoms of the outer supports abut against and support the inner supports. When cold energy in the inner tank body is transmitted to the inner supporting assembly, the inner sliding support can slide relative to the inner tank body, and therefore the supporting capacity of the low-temperature double-layer storage tank is improved.

Description

Technical Field

[0001] The invention relates to the technical field of storage tanks, and in particular to a low-temperature double-layer storage tank. Background Art

[0002] Cryogenic liquid media include liquid natural gas, liquid oxygen, liquid nitrogen, etc., which generally need to be compressed and condensed into liquid in an ultra-low temperature environment and stored in cryogenic storage tanks for transportation, thereby improving the transportation efficiency of cryogenic liquid media and reducing transportation costs.

[0003] Cryogenic liquid media are generally stored in large-capacity storage sites. When they need to be transported to various sub-sites or factories, the cryogenic liquid media in the large-capacity storage sites need to be filled into cryogenic storage tanks, and then transported through the cryogenic storage tanks to achieve the transportation of the cryogenic liquid media.

[0004] At present, the filling facilities for cryogenic liquid media are not sound enough and the filling process is relatively complicated. In order to reduce the number of filling and transportation times, the volume of cryogenic storage tanks is constantly expanding. 3 Gradually expand to 1000m 3 , and even gradually towards 2000m 3 However, large-capacity cryogenic storage tanks still mainly use a single-layer container with polyurethane insulation, which has poor cold-keeping performance and high cost. In addition, the support structure of the single-layer container is a single-point support structure, which is prone to stress concentration, resulting in poor support capacity and short service life of the liquefied natural gas storage tank. Summary of the invention

[0005] The purpose of the present application is to provide a low-temperature double-layer storage tank with a large volume and good cold-keeping performance, and to effectively improve the supporting capacity of the low-temperature double-layer storage tank and extend the service life of the low-temperature double-layer storage tank.

[0006] In order to solve the above technical problems, this application adopts the following technical solutions:

[0007] According to one aspect of the present application, the present application provides a low-temperature double-layer storage tank, which includes: an outer tank body, an inner tank body, an inner support assembly and an outer support assembly; the inner tank body is accommodated in the outer tank body at intervals, and the inner tank body is used to accommodate a low-temperature liquid medium; the inner support assembly includes a plurality of inner supports arranged at intervals along the axial direction of the inner tank body, the top of the inner support is in contact with the outer periphery of the inner tank body, and the bottom of the inner support extends downward to pass through the outer tank body; the plurality of inner supports are divided into inner sliding supports and inner fixed supports, the inner sliding supports can move relative to the inner tank body along the axial direction of the inner tank body, and the inner fixed supports are fixedly connected to the inner tank body; the outer support assembly includes a plurality of outer supports arranged at intervals along the axial direction of the outer tank body; the outer supports are arranged one-to-one with the inner supports, and the plurality of outer supports are respectively sleeved on the outer sides of the plurality of inner supports, the top of each outer support is sealed, in contact with and fixed to the bottom of the outer tank body, and the bottom of each outer support abuts and supports the inner support.

[0008] In some embodiments, the outer tank body and the inner tank body are spaced apart to form a vacuum interlayer; the outer tank body is provided with a plurality of connecting holes for accommodating a plurality of the inner supports respectively; a closed chamber is provided in the outer support, the closed chamber is connected with the vacuum interlayer through the connecting holes, the inner support extends into the closed chamber, and the bottom of the inner support is pressed and fixedly connected to the bottom wall of the closed chamber.

[0009] In some embodiments, the outer support includes an outer pad, an enclosing sealing plate and a bottom plate, the outer pad extends along the circumference of the outer tank body, the outer pad is attached to and fixedly connected to the outer tank body, the outer pad is provided with an avoidance hole relative to the connecting hole, the inner circumferential wall of the connecting hole and the inner circumferential wall of the avoidance hole are both spaced apart from the inner support; the enclosing sealing plate surrounds the inner support and is spaced apart from the inner support; the top of the enclosing sealing plate is attached to and sealedly connected to the outer pad; the bottom plate extends horizontally, the bottom plate is arranged at the bottom of the enclosing sealing plate and is sealedly connected to the enclosing sealing plate, and the bottom plate is abutted against and fixedly connected to the bottom of the inner support.

[0010] In some embodiments, the inner tank body includes a plurality of first inner pads, which are arranged at intervals along the axial direction of the inner tank body; the first inner pads are fixedly connected to the bottom of the cylinder of the inner tank body, and the first inner pads extend along the circumference of the inner tank body;

[0011] The inner support includes a second inner pad, which extends around the circumference of the inner tank body. A plurality of the second inner pads are respectively attached to a plurality of the first inner pads. In a horizontal projection plane, the projection of the second inner pad is located within the projection of the first inner pad.

[0012] In some embodiments, the angle between the two ends of the second inner pad and the axis of the inner tank body is greater than or equal to 120° and less than or equal to 150°.

[0013] In some embodiments, the low-temperature double-layer storage tank also includes a limit assembly, which includes a plurality of limit members, and the plurality of limit members are arranged on the first inner pad; the limit member includes a first limit portion and a second limit portion, the first limit portion extends radially along the inner tank body, the first limit portion is fixedly connected to the first inner pad, and the second limit portion is connected to the first limit portion and extends toward the center of the first inner pad; the first inner pad, the plurality of the first limit portions and the plurality of the second limit portions enclose a sliding space; the second inner pad in the inner sliding support can be slidably accommodated in the sliding space.

[0014] In some embodiments, the inner support also includes a web, which extends up and down, the top of the web is fixedly connected to the second inner pad, the bottom of the web is fixedly connected to the outer support, and a heat-shielding hole is opened at the bottom of the web, the heat-shielding hole passes through the web along the axial direction of the inner tank body, and the heat-shielding hole extends along the width direction of the inner tank body.

[0015] In some embodiments, the inner support also includes two connecting plates and multiple reinforcing ribs; the two connecting plates extend in the up and down directions, and the two connecting plates are located on both sides of the web, the top of the connecting plate is fixedly connected to the second inner pad, and the bottom of the connecting plate is fixedly connected to the outer support; multiple reinforcing ribs are arranged on the web, and are respectively arranged on both sides of the heat-avoiding hole; the top of the reinforcing rib plate is abutted against the second inner pad, and the bottom of the reinforcing rib plate is abutted against the outer support; in the direction from top to bottom, the distance between the reinforcing ribs on both sides of the heat-avoiding hole gradually increases.

[0016] In some embodiments, the inner support assembly includes an inner sliding support and an inner fixed support, and the inner sliding support and the inner fixed support are respectively disposed at two ends of the inner tank body.

[0017] In some embodiments, the low-temperature double-layer storage tank further includes a pipeline assembly, and the pipeline assembly is located between the inner tank body and the outer tank body and is disposed close to the inner fixed support.

[0018] It can be seen from the above technical solution that the present application has at least the following advantages and positive effects:

[0019] In the present application, when the staff uses the low-temperature double-layer storage tank, the low-temperature liquid medium is input into the inner tank body to accommodate a large amount of low-temperature liquid medium. The inner tank body is placed in the outer tank body to effectively prevent the cold from escaping, thereby improving the cold preservation performance of the low-temperature double-layer storage tank.

[0020] Moreover, the low-temperature double-layer storage tank has a double-point support structure, and the inner support assembly and the outer support assembly can support the inner tank body and the outer tank body respectively. At the same time, when the cold in the inner tank body is transferred to the inner support assembly, the inner tank body and the inner sliding support can expand and contract with heat, so that the top of the inner sliding support slides relative to the inner tank body, thereby ensuring the support capacity of the low-temperature double-layer storage tank, allowing the inner tank body to carry a large volume of low-temperature liquid medium, reducing the number of filling and transportation times of the low-temperature double-layer storage tank, and reducing transportation costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the low-temperature double-layer storage tank of the present invention.

[0022] Figure 2 yes Figure 1 A structural cross-sectional view from one of the viewing angles of the structure shown in .

[0023] Figure 3 yes Figure 1 A structural cross-sectional view of the structure from another perspective.

[0024] Figure 4 It is a structural cross-sectional view of the inner tank body and the outer tank body of the present invention.

[0025] Figure 5 It is a schematic diagram of the structure after the outer support and the inner support of the present invention are connected.

[0026] Figure 6 It is a structural schematic diagram of the external support of the present invention.

[0027] Figure 7 It is a structural schematic diagram of the inner tank body, the inner support assembly and the bottom plate of the present invention.

[0028] Figure 8 yes Figure 7 A magnified view of the structure at center.

[0029] Fig. 9 It is a structural schematic diagram of the inner tank body of the present invention.

[0030] Fig.10 It is a structural schematic diagram of the inner support of the present invention.

[0031] The accompanying drawings are marked as follows: 100, inner tank body; 110, first inner pad; 120, limit assembly; 121, limit member; 1211, first limit portion; 1212, second limit portion; 200, outer tank body; 210, connecting hole; 220, vacuum interlayer; 300, inner support assembly; 310, inner support; 311, second inner pad; 312, web; 3121, heat-avoiding hole; 313, connecting plate; 314, reinforcing rib plate; 320, inner fixed support; 330, inner sliding support; 400, outer support assembly; 410, outer support; 411, outer pad; 4111, avoidance hole; 412, enclosing sealing plate; 4121, support plate body; 4122, side plate body; 413, bottom plate; 414, closed chamber. DETAILED DESCRIPTION

[0032] Typical implementations that embody the features and advantages of the present application will be described in detail in the following description. It should be understood that the present application can have various changes in different implementations without departing from the scope of the present application, and the descriptions and illustrations therein are essentially used for illustrative purposes rather than for limiting the present application.

[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions 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. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0034] Cryogenic liquid media, including liquid natural gas, liquid nitrogen, liquid oxygen, etc., can be widely used in industrial production, energy and other fields. Cryogenic liquid media are formed by liquefying gaseous media under low temperature conditions, which facilitates the storage and transportation of the media.

[0035] Figure 1 It is a structural schematic diagram of the low-temperature double-layer storage tank of the present invention.

[0036] The present application provides a low-temperature double-layer storage tank, which can be used to accommodate low-temperature liquid media. The low-temperature double-layer storage tank can not only be applied to LNG (Liquefied Natural Gas, liquefied natural gas) fuel tanks for ships, but can also be a large storage tank suitable for the mainland to accommodate a large volume of liquefied natural gas, thereby enabling the storage and transportation of low-temperature liquids.

[0037] The low-temperature double-layer storage tank may include an inner tank body and an outer tank body. The inner tank body is contained in the outer tank body and is spaced apart from the outer tank body. Both the inner tank body and the outer tank body include a cylinder body and sealing heads disposed at both ends of the cylinder body.

[0038] See also Figure 1 For ease of understanding and description, the state where the low-temperature double-layer storage tank is placed on the horizontal ground is taken as a reference, the axis of the low-temperature double-layer storage tank extends in the horizontal direction, and the up and down directions of the low-temperature double-layer storage tank are taken as the up and down directions below.

[0039] Figure 2 yes Figure 1 A structural cross-sectional view from one of the viewing angles of the structure shown in . Figure 3 yes Figure 1 A structural cross-sectional view of the structure from another perspective. Figure 4 It is a structural cross-sectional view of the inner tank body and the outer tank body of the present invention. Figure 5 It is a schematic diagram of the structure after the outer support and the inner support of the present invention are connected. Figure 6 It is a structural schematic diagram of the external support of the present invention.

[0040] See also Figures 1 to 6 , the application provides a low-temperature double-layer storage tank, which includes: an outer tank body 200, an inner tank body 100, an inner support assembly 300 and an outer support assembly 400. The inner tank body 100 is accommodated in the outer tank body 200 at intervals, and the inner tank body 100 is used to accommodate a low-temperature liquid medium. The inner support assembly 300 includes a plurality of inner supports 310 arranged at intervals along the axial direction of the inner tank body 100, the top of the inner support 310 is in contact with the outer periphery of the inner tank body 100, and the bottom of the inner support 310 extends downward to pass through the outer tank body 200. The plurality of inner supports 310 include an inner sliding support 330 and an inner fixed support 320, the inner sliding support 330 can move relative to the inner tank body along the axial direction of the inner tank body 100, and the inner fixed support 320 is fixedly connected to the inner tank body 100. The outer support assembly 400 includes a plurality of outer supports 410 arranged at intervals along the axial direction of the outer tank body 200. The outer supports 410 are arranged one by one corresponding to the inner supports 310 , and the multiple outer supports 410 are respectively sleeved on the outside of the multiple inner supports 310 , the top of each outer support 410 is sealed and fixed to the bottom of the outer tank body 200 , and the bottom of each outer support 410 abuts and supports the inner supports 310 .

[0041] When the cryogenic double-layer storage tank is storing and transporting cryogenic liquid media, the inner support 310 is used to support the inner tank body 100, and the outer support 410 is used to support the outer tank body 200, so that the structure of the cryogenic double-layer storage tank is a double-point support structure, thereby ensuring the structural strength and supporting capacity of the cryogenic double-layer storage tank, allowing the cryogenic double-layer storage tank to accommodate a larger volume of cryogenic liquid media, effectively reducing the number of refilling and transportation times of the cryogenic double-layer storage tank, and reducing the transportation cost of the cryogenic liquid media.

[0042] Furthermore, when the inner tank body 100 contains a cryogenic liquid medium, the inner tank body 100 contracts under the influence of the cold energy of the cryogenic liquid medium, so that the inner tank body 100 and the inner sliding support 330 are relatively displaced, thereby effectively avoiding relative misalignment and rupture of the inner tank body 100 and the inner support 310 when the inner tank body 100 expands and contracts, thereby ensuring the structural strength and supporting performance of the cryogenic double-layer storage tank.

[0043] At the same time, the double-layer structure of the inner tank body 100 and the outer tank body 200 can effectively prevent the escape of cold, thereby improving the cold preservation performance of the low-temperature double-layer storage tank, reducing the cold preservation consumption of the low-temperature double-layer storage tank when transporting low-temperature liquid media, and reducing transportation costs.

[0044] In some embodiments, when the inner tank body 100 expands and contracts, the inner tank body 100 can move along its own axis relative to the inner sliding support 330. In addition, when the inner tank body 100 expands and contracts, the circumferential dimension of the inner tank body 100 also changes, so that the outer periphery of the inner tank body 100 can move relative to the inner sliding support 330.

[0045] Figure 7 It is a structural schematic diagram of the inner tank body, the inner support assembly and the bottom plate of the present invention. Figure 8 yes Figure 7 A magnified view of the structure at center. Fig. 9 It is a structural schematic diagram of the inner tank body of the present invention.

[0046] See also Figures 1 to 4 , Figures 7 to 9 In this embodiment, the cryogenic liquid storage tank includes an inner tank body 100 and an outer tank body 200 sleeved outside the inner tank body 100. The inner tank body 100 can be used to accommodate different types of cryogenic liquid media.

[0047] In this embodiment, a plurality of first inner pads 110 are fixedly connected to the bottom of the cylinder of the inner tank 100. The plurality of first inner pads 110 are arranged at intervals along the axial direction of the inner tank 100, and the first inner pads 110 extend along the circumference of the cylinder.

[0048] The first inner pad 110 is used to separate the inner support 310 from the cylinder of the inner tank body 100 to avoid direct contact between the cylinder of the inner tank body 100 and the inner support 310, thereby preventing the cold energy of the cryogenic liquid medium from being directly transferred to the inner support 310 through the inner tank body 100, thereby effectively improving the cold preservation performance of the low-temperature double-layer storage tank.

[0049] In some embodiments, the first inner gasket 110 is welded to the cylinder of the inner tank body 100 .

[0050] In some embodiments, the first inner pad 110 can be abutted against the inner sliding support 330, and the first inner pad 110 can move relative to the inner sliding support 330 to adapt to the contour changes of the inner tank body 100 caused by thermal expansion and contraction, thereby ensuring the structural strength and load-bearing capacity of the low-temperature double-layer storage tank.

[0051] In other embodiments, the first inner pad 110 can be abutted against and fixedly connected to the inner fixed support 320, so as to improve the connection strength and stability between the inner fixed support 320 and the inner tank body 100, and also facilitate the inner tank body 100 to expand and contract from the inner fixed support 320 toward the inner sliding support 330 when the inner tank body 100 expands and contracts, thereby ensuring the structural stability and reliability of the inner tank body 100.

[0052] In some embodiments, in the horizontal projection plane, the projection of the first inner pad 110 is larger than the projection of the contact surface between the inner support 310 and the first pad, so that when the inner tank body 100 expands or contracts due to heat or cold, the first inner pad 110 still completely covers the contact surface between the inner support 310 and the first pad, thereby ensuring the connection strength, structural strength and stability between the inner support 310 and the first inner pad 110.

[0053] See also Figure 2 , Figure 7 and Figure 8 In this embodiment, the low-temperature double-layer storage tank further includes a limiting assembly 120. The limiting assembly 120 includes a plurality of limiting members 121, which are arranged on the first inner pad 110 to press and limit the top end of the inner sliding support 330 to the first inner pad 110, thereby ensuring the structural strength and stability of the low-temperature double-layer storage tank.

[0054] The limiting member 121 may include a first limiting portion 1211 and a second limiting portion 1212, wherein the first limiting portion 1211 extends radially along the inner tank body 100, the first limiting portion 1211 is fixedly connected to the first inner pad 110, and the second limiting portion 1212 is connected to the first limiting portion 1211 and extends toward the center of the first inner pad 110. The first inner pad 110, the plurality of first limiting portions 1211, and the plurality of second limiting portions 1212 enclose a sliding space, and the sliding space is used to limit the top of the inner sliding support 330, so that the inner sliding support 330 can fit on the inner tank body 100 and slide relative to the inner tank body 100, thereby ensuring the reliability and stability of the low-temperature double-layer storage tank.

[0055] See also Figures 1 to 4 In this embodiment, the outer tank body 200 is sleeved on the outer side of the inner tank body 100. The outer tank body 200 and the inner tank body 100 are spaced apart to form a vacuum interlayer 220. The vacuum interlayer 220 can effectively ensure the cold preservation performance of the low-temperature double-layer storage tank, reduce the cold dissipation of the low-temperature liquid medium during transportation, and reduce the transportation cost of the low-temperature double-layer storage tank.

[0056] In some embodiments, the vacuum interlayer 220 may be filled with cold-insulating materials to form a cold-insulating filling layer (not shown in the figure).

[0057] See also Figure 4 In this embodiment, a plurality of connecting holes 210 are provided on the outer tank body 200. The connecting holes 210 are arranged at intervals along the axial direction of the outer tank body 200. The connecting holes 210 extend along the circumferential direction of the outer tank body 200. The plurality of connecting holes 210 are respectively used to accommodate a plurality of inner supports 310.

[0058] The connecting hole 210 facilitates the inner support 310 to pass through the outer tank body 200 and extend into the outer support 410, so that the weight of the inner tank body 100 can be transferred to the horizontal ground through the inner support 310 and the outer support 410 respectively, so as to improve the structural strength and bearing capacity of the low-temperature double-layer storage tank, so that the low-temperature double-layer storage tank can be used to accommodate 2000m 3 Above low temperature liquid medium.

[0059] In some embodiments, the inner wall of the connecting hole 210 is spaced apart from the inner support 310 to prevent the cold energy of the inner tank body 100 from being directly transferred to the outer tank body 200 through the inner support 310, thereby improving the cold energy transfer path in the inner tank body 100, reducing the amount of cold energy dissipation, improving the cold preservation performance and reliability of the low-temperature double-layer storage tank, and reducing the transportation cost of the low-temperature double-layer storage tank.

[0060] It can be understood that the inner tank body 100 and the outer tank body 200 are not in direct contact, and the weight of the two is transferred to the horizontal ground through the inner support assembly 300 and the outer support assembly 400, thereby preventing the outer tank body 200 from being affected by the weight of the inner tank body 100 and the cryogenic liquid medium, preventing the outer tank body 200 from being deformed by force, and ensuring the structural strength, stability and reliability of the outer tank body 200.

[0061] Furthermore, the inner tank body 100 is not in direct contact with the outer tank body 200, which can also prevent the cold on the inner tank body 100 from being directly transferred to the outer tank body 200, effectively extending the cold transfer path on the inner tank body 100, reducing the dissipation efficiency of the cold in the inner tank body 100, and improving the cold preservation effect of the low-temperature double-layer storage tank.

[0062] See also Figures 1 to 6 In this embodiment, the outer support assembly 400 is disposed at the bottom of the outer tank body 200. The outer support assembly 400 includes a plurality of outer supports 410, which are arranged at intervals along the axial direction of the outer tank body 200 to support the outer tank body 200.

[0063] The plurality of outer supports 410 are arranged corresponding to the plurality of communication holes 210 on the outer tank body 200. A closed chamber 414 is provided in the outer support 410, and the closed chamber 414 is connected to the vacuum interlayer 220 through the communication holes 210. The inner support 310 can extend into the closed chamber 414 through the communication holes 210, and the bottom of the inner support 310 is pressed and fixedly connected to the bottom wall of the closed chamber 414.

[0064] On the one hand, the closed chamber 414 is connected to the vacuum interlayer 220, so that the closed space is also in a vacuum state, which can effectively reduce the escape of cold on the inner support 310 and improve the cold preservation performance of the low-temperature double-layer storage tank. On the other hand, the bottom of the inner support 310 is pressed and fixedly connected to the outer support 410, so that the weight of the inner tank body 100 can be transferred to the horizontal ground through the bottom of the inner support 310 and the outer support 410, thereby realizing two-point support of the double-layer storage tank and improving the structural strength of the low-temperature double-layer storage tank.

[0065] In some embodiments, the outer support 410 may include an outer pad 411, an enclosing sealing plate 412 and a bottom plate 413. The outer pad 411 extends along the circumference of the outer tank body 200, and the outer pad 411 is attached to and fixedly connected to the outer tank body 200. The outer pad 411 is provided with an avoidance hole 4111 relative to the connecting hole 210, and the inner circumferential wall of the avoidance hole 4111 is spaced apart from the inner support 310 to avoid the cold on the inner support 310 from being directly transferred to the outer pad 411, thereby extending the transfer path of the cold on the inner support 310, reducing the amount of cold dissipation, and improving the cold preservation performance of the low-temperature double-layer storage tank. The outer pad 411 covers the connecting hole 210 to ensure the airtightness between the outer tank body 200 and the outer pad 411 to avoid damage to the vacuum clamping.

[0066] In some embodiments, the peripheral side of the outer pad 411 can be abutted against and fully welded to the outer tank body 200 to ensure the airtightness of the closed chamber 414 and the vacuum interlayer 220 .

[0067] In other embodiments, the outer pad 411 , the enclosing sealing plate 412 and the bottom plate 413 may also be fixedly connected by full welding to ensure the airtightness of the closed chamber 411 .

[0068] See also Figures 1 to 6 In this embodiment, the enclosed sealing plate 412 surrounds the inner support 310 and is spaced apart from the inner support 310. The top of the enclosed sealing plate 412 is attached to and sealed with the outer pad 411, and the bottom of the enclosed sealing plate 412 is attached to and sealed with the bottom plate 413. The enclosed sealing plate 412 can support the outer pad 411 and the outer tank body 200, so that the weight of the outer tank body 200 can be transferred to the horizontal ground, effectively improving the structural strength and bearing capacity of the low-temperature double-layer storage tank.

[0069] In some embodiments, in the horizontal projection plane, the projection of the avoidance hole 4111 is located within the projection of the enclosing sealing plate 412 to ensure the airtightness between the enclosing sealing plate 412 and the outer pad 411 and to ensure the cold preservation capacity of the low-temperature double-layer storage tank.

[0070] In some embodiments, in the horizontal projection plane, the projection of the enclosing sealing plate 412 is located within the projection range of the outer pad 411 , so that the enclosing sealing plate 412 can bear the weight of the outer tank body 200 through the outer pad 411 .

[0071] See also Figures 1 to 6 In this embodiment, the enclosing sealing plate 412 is a cylindrical structure, and the horizontal cross-section of the enclosing sealing plate 412 is a rectangle.

[0072] The enclosed sealing plate 412 includes two support plates 4121 and two side plates 4122. The two support plates 4121 are symmetrically arranged. The two support plates 4121 are spaced apart along the axial direction of the outer tank body 200. The two support plates 4121 extend along the circumferential direction of the outer tank body 200, the tops of the two support plates 4121 are tightly fitted and connected to the outer pad 411, and the bottoms of the two support plates 4121 are tightly fitted and connected to the bottom plate 413. The two side plates 4122 are symmetrically arranged. The two side plates 4122 extend in the up and down directions. Both side plates 4122 are located between the two support plates 4121, and both side plates 4122 are tightly fitted and connected to the two support plates 4121, respectively, the tops of the side plates 4122 are tightly fitted and connected to the outer pad 411, and the bottoms of the side plates 4122 are tightly fitted and connected to the bottom plate 413.

[0073] The two supporting plates 4121 and the two side plates can effectively support the outer tank body 200 to transfer the weight of the outer tank body 200 to the bottom plate 413, thereby improving the structural strength and stability of the low-temperature double-layer storage tank.

[0074] In other embodiments, in the horizontal projection plane, the angle between the side plate body 4122 and the support plate body 4121 is a right angle, thereby improving the structural strength and supporting capacity of the enclosing sealing plate 412.

[0075] In other embodiments, the two support plates 4121 and the two side plates 4122 are formed by bending a whole plate, thereby effectively improving the structural strength and bearing capacity of the outer support 410 .

[0076] See also Figures 1 to 6 In this embodiment, the bottom plate 413 extends horizontally. The bottom plate 413 is disposed at the bottom of the enclosed sealing plate 412 and is sealed and connected to the enclosed sealing plate 412. The bottom plate 413 is abutted against and fixedly connected to the bottom of the inner support 310. The bottom plate 413 can support the enclosed sealing plate 412 and the inner support 310 to prevent the enclosed sealing plate 412 from contacting the inner support 310, thereby extending the transfer path of the cold amount in the cryogenic liquid medium, reducing the efficiency of cold amount dissipation, and improving the cold preservation effect of the low-temperature double-layer storage tank.

[0077] The bottom plate 413 is sealed to connect the two support plates 4121 and the two side plates 4122, so that the bottom plate 413, the enclosed sealing plate 412 and the outer pad 411 enclose a sealed closed chamber 414. The closed chamber 414 is in a vacuum state to improve the cooling effect of the outer support 410 when accommodating the inner support 310.

[0078] Fig.10 It is a structural schematic diagram of the inner support of the present invention.

[0079] See also Figure 2 , Figure 3 , Figure 5 , Figures 7 to 10 In this embodiment, the inner support assembly 300 includes a plurality of inner supports 310. The plurality of inner supports 310 are arranged at intervals along the axial direction of the inner tank body 100. The top of the inner support 310 is against the inner tank body 100. The bottom of the inner support 310 extends into the closed chamber 414 after passing through the connecting hole 210 and the avoidance hole 4111, and is pressed on the bottom plate 413, so that the inner support 310 directly transfers the weight of the inner tank body 100 and the weight of the cryogenic liquid medium to the horizontal ground through the bottom plate 413, thereby realizing the double-point support of the cryogenic double-layer storage tank, effectively ensuring the structural strength and bearing capacity of the cryogenic double-layer storage tank, and improving the stability and reliability of the cryogenic double-layer storage tank, so that the cryogenic double-layer storage tank can accommodate a larger volume of cryogenic liquid medium.

[0080] The plurality of inner supports 310 can be divided into inner sliding supports 330 and inner fixed supports 320. The top of the inner sliding support 330 is abutted against the first inner pad 110, and the top of the inner sliding support 330 can move relative to the inner tank body 100 to adapt to the thermal expansion and contraction of the inner tank body 100, and prevent fatigue fracture at the connection between the inner support assembly 300 and the inner tank body 100. The bottom of the inner sliding support 330 is fixedly connected to the bottom plate 413. The top of the inner fixed support 320 is fixedly connected to the first inner pad 110, and the bottom of the inner fixed support 320 is fixedly connected to the bottom plate 413.

[0081] See also Figure 2 , Figure 3 , Figure 5 , Figures 7 to 10 In this embodiment, the inner support 310 includes a second inner pad 311. The second inner pad 311 extends along the circumference of the inner tank body 100, and the second inner pad 311 can abut and fit on the first inner pad 110 to bear the weight of the inner tank body 100.

[0082] In some embodiments, in the horizontal projection plane, the projection of the second inner pad 311 is located within the projection of the first inner pad 110, so that when the partial inner support 310 and the inner tank body 100 move relative to each other, the first inner pad 110 still covers the second inner pad 311, thereby ensuring the bearing capacity between the inner support assembly 300 and the inner tank body 100.

[0083] See also Figure 2 , Figure 7 and Figure 8 In this embodiment, a plurality of stoppers 121 are located on the first inner pad 110 and on the circumferential side of the second inner pad 311 of the inner sliding support 330. The second inner pad 311 of the inner sliding support 330 is located in the sliding space, thereby limiting the movement of the second inner pad 311 relative to the first inner pad 110 in the up-down direction.

[0084] When the second inner pad 311 of the partial inner support 310 is relatively displaced with the inner tank body 100, the limit assembly 120 can ensure the structural stability and reliability between the inner support 310 and the inner tank body 100, and improve the bearing capacity and stability of the low-temperature double-layer storage tank. In addition, it is convenient for the transportation of the low-temperature double-layer storage tank, and prevents the inner tank body 100 from jumping up and down relative to the inner support assembly 300, thereby improving the reliability of the low-temperature double-layer storage tank and extending the service life of the low-temperature double-layer storage tank.

[0085] In some embodiments, the second pad of the inner sliding support 330 is spaced apart from the first limiting portion 1211, and the second pad of the inner sliding support 330 is attached to the second limiting portion 1212 so as to be pressed against the inner tank body 100 under the action of the second limiting portion 1212, thereby facilitating the movement of the second pad of the inner sliding support 330 relative to the inner tank body 100.

[0086] In other embodiments, multiple limit members 121 may be provided on the peripheral side of the second inner pad 311 of the internal fixed support 320, or multiple limit members 121 may not be required, so that the second inner pad 311 of the internal fixed support 320 is fixedly connected to the first inner pad 110 to support the inner tank body 100.

[0087] In some embodiments, the angle between the two ends of the second inner pad 311 and the axis of the inner tank body 100 is greater than or equal to 120° and less than or equal to 150°, so that the second inner pad 311 can reduce the volume while ensuring the contact area between the second inner pad 311 and the first inner pad 110, thereby improving the bearing capacity and reliability of the inner support 310 and avoiding deformation or damage due to excessive local pressure on the first inner pad 110 and the inner tank body 100.

[0088] See also Figure 2 , Figure 3 , Figure 5 , Figures 7 to 10 In this embodiment, the inner support 310 further includes a web 312. The web 312 extends up and down, and the top of the web 312 is fixedly connected to the second inner pad 311 and extends along the extension direction of the second inner pad 311. The bottom of the web 312 is fixedly connected to the outer support 410 to transfer the pressure borne by the second inner pad 311 to the bottom plate 413, thereby improving the structural strength and reliability of the inner support assembly 300.

[0089] In some embodiments, in a horizontal projection plane, the projection of the web 312 is located within the projection of the second inner pad 311 .

[0090] In the axial direction of the inner tank body 100, the projection of the web 312 in the horizontal projection plane is located at the center of the projection of the second inner pad 311 in the horizontal projection plane, so that the web 312 can evenly bear the pressure of the second inner pad 311, and it is also convenient for the second inner pad 311 to support the first inner pad 110 after thermal expansion and contraction, thereby improving the structural stability of the low-temperature double-layer storage tank.

[0091] In some embodiments, a heat-avoiding hole 3121 is provided at the bottom of the web 312, and the heat-avoiding hole 3121 penetrates the web 312 along the axial direction of the inner tank body 100, and the heat-avoiding hole 3121 extends along the width direction of the inner tank body 100. The arrangement of the heat-avoiding hole 3121 enables the cold energy of the cryogenic liquid medium to be transferred to the web 312, and then transferred to the bottom plate 413 through the part of the web 312 on both sides of the heat-avoiding hole 3121, thereby extending the transfer path of the cold energy from the inner tank body 100 to the bottom plate 413, reducing the efficiency of cold energy dissipation, improving the cold preservation effect of the low-temperature double-layer storage tank, and reducing the transportation and storage costs of the low-temperature double-layer storage tank.

[0092] In other embodiments, the heat-shielding hole 3121 is located at the center of the bottom of the web 312 and extends from the center of the bottom of the web 312 to both sides along the width direction of the inner tank body 100 to extend the transfer path of cold energy when flowing through the web 312.

[0093] In some embodiments, the heat-avoiding hole 3121 of the web 312 can also be arranged at the lower part of the web 312 and close to the bottom of the web 312. When the cold energy at the bottom of the inner tank body 100 is transferred from top to bottom, the cold energy is transferred along two arc-shaped transfer trajectories that are convex and extend in opposite directions to avoid the heat-avoiding hole 3121, thereby preventing the cold energy from being directly transferred from the inner tank body 100 to the bottom plate 413 from top to bottom, extending the cold energy transfer route and reducing the cold energy dissipation efficiency.

[0094] See also Figure 2 , Figure 3 , Figure 5 , Figures 7 to 10 In this embodiment, the inner support 310 may further include two connecting plates 313 and a plurality of reinforcing rib plates 314. The two connecting plates 313 extend in the up-down direction, and are located on both sides of the web 312. The top of the connecting plate 313 is fixedly connected to the second inner pad 311, and the bottom of the connecting plate 313 is fixedly connected to the outer support 410.

[0095] A plurality of reinforcing ribs 314 are disposed on the web 312, and the reinforcing ribs 314 extend in the up-down direction. The top of the reinforcing ribs 314 abuts against the second inner pad 311, and the bottom of the reinforcing ribs 314 abuts against the outer support 410 to support the web 312, thereby improving the structural strength of the inner support 310, so that the inner support 310 can support a larger volume of the inner tank body 100 and the cryogenic liquid medium therein, thereby ensuring the structural strength and stability of the cryogenic double-layer storage tank.

[0096] In some embodiments, a plurality of reinforcing ribs are respectively disposed on both sides of the heat-shielding hole 3121. In the direction from top to bottom, the spacing between the reinforcing rib plates 314 on both sides of the heat-shielding hole 3121 gradually increases, so that the reinforcing ribs on both sides, the second inner pad 311 and the bottom plate 413 form a kind of step structure, so as to further improve the structural strength and stability of the inner support 310, so as to support the inner tank body 100 of large capacity.

[0097] In other embodiments, the plurality of reinforcing ribs may be arranged in other ways to enhance the supporting capacity of the web 312 .

[0098] See also Figure 1 , Figure 2 , Figure 4 , Figure 7 and Fig. 9 In this embodiment, the inner support assembly 300 may include two inner supports 310, which are an inner sliding support 330 and an inner fixed support 320. The inner sliding support 330 and the inner fixed support 320 are respectively disposed at both ends of the inner tank body 100 to support the inner tank body 100 respectively, and the weight of the inner tank body 100 is transferred to the horizontal ground through the inner sliding support 330 and the inner fixed support 320.

[0099] When the inner tank body 100 expands and contracts under the influence of cold, one end of the inner tank body 100 is fixedly connected to the inner fixed support 320, and the other end of the inner tank body 100 slides on the inner sliding support 330 relative to the inner fixed support 320, so as to improve the structural reliability and stability of the low-temperature double-layer storage tank and improve the carrying capacity of the low-temperature double-layer storage tank. In addition, it can avoid that when both inner supports 310 are inner fixed supports 320, the inner tank body 100 expands and contracts to move relative to the two inner fixed supports 320, thereby avoiding the connection between the inner fixed support 320 and the inner tank body 100 from being damaged by force, thereby ensuring the safety and reliability of the low-temperature double-layer storage tank.

[0100] It can be understood that the above-mentioned fixed connections can all be welding connections to improve the structural strength.

[0101] In some embodiments, the inner support assembly 300 may include three inner supports 310. The three inner supports 310 may be two inner sliding supports 330 and one inner fixed support 320. The two inner sliding supports 330 are respectively located at both ends of the inner tank body 100, and the inner fixed support 320 is located between the two inner sliding supports 330 to jointly support the inner tank body 100, thereby improving the bearing capacity of the inner support assembly 300, so that the low-temperature double-layer storage tank can carry a large volume of liquid low-temperature medium, thereby effectively reducing the transportation cost of the low-temperature double-layer storage tank.

[0102] In some embodiments, the low-temperature double-layer storage tank further includes a pipeline assembly (not shown in the figure). The pipeline assembly may include valves, pipelines, and lines. The pipeline assembly is located between the inner tank body 100 and the outer tank body 200, and is arranged close to the inner fixed support 320 to prevent the pipeline assembly from stretching and shrinking when the inner tank body 100 expands and contracts, thereby ensuring the safety of the pipeline assembly and improving the stability and reliability of the low-temperature double-layer storage tank.

[0103] See also Figures 1 to 10 In the present application, a low-temperature double-layer storage tank is provided. When the low-temperature double-layer storage tank is used to accommodate a low-temperature liquid medium, the vacuum interlayer 220 can effectively keep the inner tank body 100 cold and reduce the dissipation efficiency of the cold liquid medium.

[0104] Both the inner fixed support 320 and the inner sliding support 330 can support the inner tank body 100 to transfer the weight of the inner tank body 100 and the cryogenic liquid medium to the horizontal ground through the bottom plate 413. The multiple outer supports 410 can support the outer tank body 200 to transfer the weight of the outer tank body 200 to the horizontal ground, thereby achieving double-point support, ensuring the structural strength and bearing capacity of the low-temperature double-layer storage tank, allowing the inner tank body 100 to carry a large volume of cryogenic liquid medium, reducing the number of refilling and transportation times of the low-temperature double-layer storage tank, and reducing transportation costs.

[0105] The coldness in the cryogenic liquid medium can cause the inner tank body 100 to shrink due to the cold, thereby causing the inner tank body 100 to move relative to the inner sliding support 330, thereby effectively avoiding rupture and damage to the inner tank body 100 and the inner fixed support 320, and improving the structural strength, reliability and stability of the cryogenic double-layer storage tank.

[0106] The above embodiments are merely exemplary descriptions of the structures. The structures in the embodiments are not fixed combination structures. In the absence of structural conflicts, the structures in multiple embodiments can be used in any combination.

[0107] Although the present application has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present application can be implemented in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A low-temperature double-layer storage tank, characterized in that: include: Outer tank; An inner tank body, which is accommodated in the outer tank body, and the inner tank body is used to accommodate a low-temperature liquid medium; An inner support assembly, comprising a plurality of inner supports spaced apart along the axial direction of the inner tank body, wherein the top of the inner support is in contact with the outer circumference of the inner tank body, and the bottom of the inner support extends downward to pass through the outer tank body; The plurality of inner supports are divided into inner sliding supports and inner fixed supports, the inner sliding supports can move relative to the inner tank body along the axial direction of the inner tank body, and the inner fixed supports are fixedly connected to the inner tank body; An outer support assembly comprises a plurality of outer supports arranged at intervals along the axial direction of the outer tank body; the outer supports are arranged one-to-one corresponding to the inner supports, the plurality of outer supports are respectively sleeved on the outer sides of the plurality of inner supports, the top of each outer support is sealed and fixed to the bottom of the outer tank body, and the bottom of each outer support abuts and supports the inner support.

2. The low-temperature double-layer storage tank according to claim 1, characterized in that: The outer tank body and the inner tank body are spaced apart to form a vacuum interlayer; the outer tank body is provided with a plurality of communication holes for accommodating a plurality of the inner supports respectively; A closed chamber is provided in the outer support, the closed chamber is communicated with the vacuum interlayer through the communicating hole, the inner support extends into the closed chamber, and the bottom of the inner support is pressed and fixedly connected to the bottom wall of the closed chamber.

3. The low-temperature double-layer storage tank according to claim 2, characterized in that: The outer support includes an outer pad, an enclosing sealing plate and a bottom plate, the outer pad extends along the circumference of the outer tank body, the outer pad is attached to and fixedly connected to the outer tank body, the outer pad is provided with an avoidance hole relative to the connecting hole, the inner circumferential wall of the connecting hole and the inner circumferential wall of the avoidance hole are both spaced apart from the inner support; the enclosing sealing plate surrounds the inner support and is spaced apart from the inner support; the top of the enclosing sealing plate is attached to and sealedly connected to the outer pad; the bottom plate extends horizontally, the bottom plate is arranged at the bottom of the enclosing sealing plate and is sealedly connected to the enclosing sealing plate, and the bottom plate is abutted against and fixedly connected to the bottom of the inner support.

4. The low-temperature double-layer storage tank according to claim 1, characterized in that: The inner tank body comprises a plurality of first inner pads, which are arranged at intervals along the axial direction of the inner tank body; the first inner pads are fixedly connected to the bottom of the cylinder of the inner tank body, and the first inner pads extend along the circumference of the inner tank body; The inner support includes a second inner pad, which extends around the circumference of the inner tank body. A plurality of the second inner pads are respectively attached to a plurality of the first inner pads. In a horizontal projection plane, the projection of the second inner pad is located within the projection of the first inner pad.

5. The low-temperature double-layer storage tank according to claim 4, characterized in that: The angle between the two ends of the second inner pad and the axis of the inner tank body is greater than or equal to 120° and less than or equal to 150°.

6. The low-temperature double-layer storage tank according to claim 4, characterized in that: The low-temperature double-layer storage tank also includes a limiting assembly, the limiting assembly includes a plurality of limiting members, and the plurality of limiting members are arranged in a ring on the first inner pad; the limiting member includes a first limiting portion and a second limiting portion, the first limiting portion extends along the radial direction of the inner tank body, the first limiting portion is fixedly connected to the first inner pad, and the second limiting portion is connected to the first limiting portion and extends toward the center of the first inner pad; The first inner pad, the plurality of the first limiting portions and the plurality of the second limiting portions enclose a sliding space; The second inner pad in the inner sliding support is slidably accommodated in the sliding space.

7. The low-temperature double-layer storage tank according to claim 4, characterized in that: The inner support also includes a web, which extends up and down, the top of the web is fixedly connected to the second inner pad, the bottom of the web is fixedly connected to the outer support, and a heat-shielding hole is opened at the bottom of the web, the heat-shielding hole passes through the web along the axial direction of the inner tank body, and the heat-shielding hole extends along the width direction of the inner tank body.

8. The low-temperature double-layer storage tank according to claim 7, characterized in that: The inner support further includes two connecting plates and a plurality of reinforcing rib plates; the two connecting plates extend in the up-down direction, the two connecting plates are located on both sides of the web, the top of the connecting plate is fixedly connected to the second inner pad, and the bottom of the connecting plate is fixedly connected to the outer support; A plurality of reinforcing ribs are arranged on the web and are respectively arranged on both sides of the heat-avoiding hole; the top of the reinforcing rib is abutted against the second inner pad, and the bottom of the reinforcing rib is abutted against the outer support; in the direction from top to bottom, the spacing between the reinforcing ribs on both sides of the heat-avoiding hole gradually increases.

9. The low-temperature double-layer storage tank according to claim 1, characterized in that: The inner support assembly includes an inner sliding support and an inner fixed support, and the inner sliding support and the inner fixed support are respectively arranged at two ends of the inner tank body.

10. The low-temperature double-layer storage tank according to claim 9, characterized in that: The low-temperature double-layer storage tank also includes a pipeline assembly, which is located between the inner tank body and the outer tank body and is arranged close to the inner fixed support.

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