A storage device and transport apparatus

Abstract

The application discloses a storage device, which comprises a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body, a tank body,

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of liquefied gas transportation equipment, and particularly relates to a storage device and a transportation equipment. BACKGROUND

[0002] When the existing liquefied gas transportation vehicle transports liquid ammonia or other chemical media, the liquid ammonia product needs to be transported to the wharf by the liquid ammonia tank vehicle, and then is sold to overseas countries by the liquid ammonia ship. The product liquid ammonia tank storage condition is-33 degrees, and the liquid ammonia purity is 99.9885%. The wharf low-temperature tank operating condition is the same. Because the current tank vehicle is a single-layer bare tank structure, the medium in the tank will naturally absorb heat during the transportation process, resulting in an increase in the temperature in the tank, which does not meet the terminal user demand.

[0003] In order to ensure that the heat loss is reduced during the transportation process and zero energy input loss is realized, the cold loss during the tank vehicle transportation needs to be reduced. However, during the transportation process, the cold in the tank is seriously emitted at the valve and the pipeline, and the pipeline and the valve will be frosted, which affects the normal opening and closing of the valve. SUMMARY

[0004] The purpose of the application is to provide a storage device which can solve the problem that the inner pipeline and the valve are easily frosted, and can maintain the normal opening and closing of the valve.

[0005] The application provides a storage device in a first aspect, which comprises:

[0006] A tank body, which surrounds a storage cavity, and is used for storing at least liquid medium;

[0007] An outer convex shell, which is arranged at the upper part of the tank body, and forms a containing space between the inner side of the outer convex shell and the tank body;

[0008] A valve, which is arranged on the outer convex shell;

[0009] An inner cold insulation layer, which is arranged in the containing space of the outer convex shell, and separates the valve and the storage cavity.

[0010] The storage device further comprises an inner pipeline, which is arranged in the inner cold insulation layer, one end of the inner pipeline is communicated with the valve, and the other end of the inner pipeline is communicated with the storage cavity.

[0011] The valve is provided in at least two, the number of the inner pipeline corresponds to the valve, one inner pipeline is a gas phase pipeline, and the other inner pipeline is a liquid phase pipeline.

[0012] The storage device, wherein the tank body comprises a main body and an extension part, the main body forms the storage cavity, the extension part is arranged at a position close to the accommodation space of the storage cavity, the extension part extends from the main body to the inner pipeline, and the extension part and the outer convex shell form the accommodation space.

[0013] The storage device, wherein the surface of the outer convex shell is a semispherical arc surface or a semihemispherical arc surface.

[0014] The storage device, wherein the valve is arranged at the top end of the outer convex shell.

[0015] The storage device, wherein the outer cold insulation layer is wrapped on the outer surface of the tank body.

[0016] The storage device, wherein the valve is connected with the pipe opening of the tank body, and the outer cold insulation layer extends to cover the position where the valve is connected with the pipe opening.

[0017] The storage device, wherein the outer cold insulation layer and / or the inner cold insulation layer are any one or several of polyurethane foaming material, deep cold series rubber and plastic material, aerogel, inorganic fiber cotton and foaming glass.

[0018] In a second aspect, the application provides a transportation device, which comprises a carrier, a gas input device and any one of the storage devices according to the first aspect, the storage device and the gas input device are arranged on the carrier, and the gas input device is connected with the tank body; the gas input device is used for inputting protective gas into the tank body through the valve.

[0019] The transportation device, wherein the thermal conductivity of the protective gas is lower than the gaseous thermal conductivity of the medium; and / or the density of the protective gas is lower than the gaseous density of the medium.

[0020] The application has the following beneficial effects:

[0021] By arranging the outer convex shell on the upper part of the tank body and arranging the valve on the outer convex shell, the distance between the valve and the liquid phase space is increased, the cold loss at the valve and the pipe opening is effectively reduced by filling the inner cold insulation layer in the outer convex shell, the valve and the pipeline are prevented from frosting and freezing, and the normal opening and closing of the valve are maintained.

[0022] Other characteristics and advantages of the application will become apparent from the following detailed description, or will be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which are incorporated herein and constitute part of this specification, illustrate embodiments consistent with the application and, together with the description, further serve to explain the principles of the application. It is to be understood that the drawings are only illustrative of certain embodiments of the application and that the subject matter is not limited to the specific arrangements, details or methodology depicted therein.

[0024] Figure 1 A schematic structural view of a storage device and a transport equipment according to an embodiment of the present application;

[0025] Figure 2 A schematic structural view of a storage device according to an embodiment of the present application;

[0026] Figure 3 A schematic structural view of a storage device according to an embodiment of the present application;

[0027] Figure 4 A schematic cross-sectional view of a tank at a liquid phase port of a storage device according to an embodiment of the present application;

[0028] Figure 5 A schematic structural view of a tank at a gas phase port of a storage device according to an embodiment of the present application.

[0029] BRIEF DESCRIPTION OF DRAWINGS

[0030] 1. tank; 11. body; 12. extension;

[0031] 2. port; 21. gas phase port; 22. liquid phase port;

[0032] 3. valve;

[0033] 4. outer convex shell;

[0034] 5. inner thermal insulation layer;

[0035] 6. outer thermal insulation layer;

[0036] 7. inner pipe; 71. gas phase pipe; 72. liquid phase pipe; 73. outer pipe;

[0037] 81. gas phase space; 82. liquid phase space;

[0038] 9. gas input device. DETAILED DESCRIPTION

[0039] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the specific examples set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the subject matter to those skilled in the art.

[0040] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a full understanding of embodiments of the invention. However, those skilled in the art will recognize that the technical solutions of the invention can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of the invention.

[0041] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0042] During the transportation of liquefied gas, the medium inside the tank will naturally absorb heat, causing the cold to dissipate, especially in valves and pipelines, which may lead to frost and freezing on valves and pipelines.

[0043] Therefore, this application provides a storage device, such as Figure 1 As shown, a storage device includes:

[0044] Tank 1, which encloses a storage cavity, is used to store at least a liquid medium; wherein, the liquid medium may be a liquefied gas;

[0045] The outer convex shell 4 is disposed on the upper part of the tank body 1, and the inner side of the outer convex shell 4 forms an accommodating space with the tank body.

[0046] Valve 3 is mounted on the outer convex shell 4; wherein, valve 3 can be a manual valve or a solenoid valve;

[0047] The inner cold insulation layer 5 is located in the accommodating space of the outer convex shell 4 to separate the valve 3 and the storage cavity.

[0048] In this embodiment, as Figure 1 As shown, the storage device can be used in a liquefied gas transport vehicle. The tank 1 can be made of carbon steel and has an internal storage cavity for storing various types of liquefied gases. The upper part of the tank 1, including the top of the tank and the surface of its surrounding area, can be used to install a port 2 for connection to a valve 3. The port 2 can be connected to the flange of the valve 3.

[0049] like Figure 1As shown, in this embodiment, the upper part of the tank is provided with an outer convex shell 4, the top of which is higher than the top of the tank body 1; the pipe opening 2 is provided on the outer convex shell 4, which is used to install the valve 3 onto the outer convex shell 4. The pipe opening 2 is preferably located at the top of the outer convex shell 4, in other words, the valve 3 is preferably located at the top of the outer convex shell 4. The surface of the outer convex shell 4 can be made into an arc surface, such as a hemispherical arc surface or a semi-flat spherical arc surface like an end cap. Among them, the hemispherical arc surface is easy to process and has high efficiency. In this solution, the valve 3 is located on the outer convex shell 4 and separates the valve 3 from the storage cavity. Compared with the prior art where the valve 3 is directly located on the upper part of the tank body 1, the distance between the valve 3 and the liquefied gas stored in the storage cavity can be increased, which helps to reduce the cold loss at the valve 3. As a further preferred solution, the top of the outer convex shell 4 can be higher than the top of the tank body 1, or the top of the accommodating space can be higher than the top of the storage cavity, so that the position of the valve 3 in the new solution is higher than that in the prior art.

[0050] like Figure 1 As shown, the outer convex shell 4 protrudes from the outer wall of the tank 1. The inner side of the outer convex shell 4 forms a receiving space with the storage cavity, which serves as a receiving cavity. An inner cold insulation layer 5 is provided within this receiving space. The inner cold insulation layer 5 may include any one or more of the following materials: polyurethane foam, cryogenic rubber and plastic materials, aerogel, inorganic fiber cotton, and foamed glass, which can reduce cold loss at the valve 3. The inner cold insulation layer 5 can completely fill the receiving space, or it can fill only a portion of the receiving space as needed.

[0051] like Figure 2 , Figure 3 As shown, an inner pipe 7 extending into the tank 1 is also provided on the pipe opening 2. The inner pipe 7 passes through the inner insulation layer 5. One end of the inner pipe 7 is connected to the valve 3 through the pipe opening 2, and the other end is connected to the storage cavity. One end of the inner pipe 7 is connected to the outer pipe 73 through the valve 3. In this application, the medium is loaded and unloaded by a top-loading and top-unloading method. Under the control of the valve, the medium can be output from the inside of the tank to the outside along the inner pipe 7, or it can be input into the tank from the outside along the outer pipe 73.

[0052] In this embodiment, there may or may not be a partition structure between the accommodating space and the storage cavity.

[0053] If there is a partition structure between the accommodating space and the storage cavity, refer to Figure 2In the example, the tank 1 may include a body 11 and an extension 12. The body 11 encloses a storage cavity, and the extension 12 is located near the accommodating space within the storage cavity. The extension 12 extends from the body 11 towards the inner pipe 7, and the extension 12 and the outer convex shell 4 enclose the accommodating space. The accommodating space can be a closed or semi-closed structure formed by the inner wall surfaces of the extension 11 and the outer convex shell 4. The extension 12 can support the inner insulation layer 5. A closed structure refers to the extension 12 extending from the point where the body 11 connects to the outer convex shell 4 to the point where it contacts the inner pipe 7. A semi-closed structure refers to the extension 12 extending from the point where the body 11 connects to the outer convex shell 4 towards the inner pipe 7 but not yet reaching the inner pipe 7. Furthermore, the semi-closed structure can be achieved not only by providing the extension 12, but also in other ways. For example, the convex shell 4 can adopt a superior arc surface structure (such as the connection position between its outer surface and the body 11 forming an Ω shape), that is, the convex shell 4 and the body 11 form a gourd-shaped connection. In this case, the inner diameter of the connection between the convex shell 4 and the body 11 is smaller than the maximum inner diameter of the inner side of the convex shell 4. Under this connection method, the lower part of the convex shell 4 (that is, the area between the maximum inner diameter of the convex shell 4 and the connection between the convex shell 4 and the body 11) can also play a similar role to the extension 12, that is, to support the inner insulation layer 5.

[0054] If there is no separating structure between the accommodating space and the storage cavity, refer to... Figure 3 In the example, the tank 1 includes a body 11, which encloses a storage cavity. The inner side of the outer convex shell 4 forms a receiving space communicating with the storage cavity. In this case, the receiving space is an open structure, and the inner cold insulation layer 5 can be set in the receiving space by means of adhesion or other methods. Regarding the scheme with a partition structure, the body 11 and the extension 12 can be integrally formed, and the outer convex shell 4 can be installed to the position of the extension 12 by means of welding, bonding or other methods. Regarding the scheme without a partition structure, the outer convex shell 4 and the body 11 can be integrally formed, or the tank 1 can have an opening at the installation position of the outer convex shell 4, and the outer convex shell 4 can be aligned and fixed to the position of the corresponding opening by means of welding, bonding or other methods.

[0055] The inventors have found in practice that during the transportation of the liquefied gas vehicle, the cold energy dissipates seriously at the valve and the inner pipeline, the inner pipeline and the valve are frosted, and the normal opening and closing of the valve is affected. In order to reduce the cold energy loss at the inner pipeline and the valve, the application sets an outer convex shell on the top of the tank body, and installs the valve on the outer convex shell instead of directly setting on the surface of the tank body as in the traditional scheme, so that the position of the valve is lifted to increase the distance between the valve and the liquid phase space; the lifted valve in combination with the cold insulation material filled in the space of the outer convex shell increases the thickness of the cold insulation material, reduces the cold energy loss at the valve and the pipe opening, and can effectively prevent the valve and the pipeline from frosting, and maintain the normal opening and closing of the valve. Those skilled in the art can understand that the structure or transportation equipment with the heat preservation storage device can also use the technical means in the application to prevent heat loss.

[0056] In some embodiments, the outer convex shell 4 can be made of stainless steel material.

[0057] In order to improve the cold insulation performance, the outer convex shell is preferably made of a material with a lower thermal conductivity coefficient (i.e. thermal conductivity) than the tank body material. Considering that the tank body is generally made of carbon steel material, and the thermal conductivity coefficient of carbon steel is about 50-60 W / (m·K), the thermal conductivity coefficient of stainless steel is between 15-27 W / (m·K), i.e. the thermal conductivity coefficient of stainless steel is only about 1 / 3 of that of carbon steel, which is more conducive to cold insulation. Therefore, in this embodiment, stainless steel material is selected to make the outer convex shell.

[0058] In some embodiments, as shown in Figures 1-4 The storage device further includes an outer cold insulation layer 6 wrapped on the outer surface of the tank body 1. The outer cold insulation layer 6 can extend outward from the outer surface of the tank body 1. The outer cold insulation layer 6 can cover the whole or part of the outer surface of the tank body 1. Similarly, the outer cold insulation layer 6 can also cover the outer side of the outer convex shell 4. Further, the valve 3 is connected with the pipe opening 2 of the tank body 1, and the outer cold insulation layer 6 can also extend to cover the position where the valve 3 is connected with the pipe opening 2.

[0059] Since the current tank vehicle generally adopts a single-layer bare tank structure, there will be a certain degree of cold energy loss at other positions on the surface of the tank body in addition to the position of the valve and the pipe opening. In this embodiment, by covering the outer surface of the tank body with the outer cold insulation layer, the cold energy loss on the surface of the tank body can be further reduced. As a further preferred scheme, the outer cold insulation layer 6 can cover not only the outer surface of the tank body but also the outer side of the outer convex shell 4, and even the position where the valve 3 is connected with the pipe opening 2, so as to provide better cold insulation effect.

[0060] When the storage device adopts the outer cold insulation layer 6 structure, in combination with the outer convex shell and the inner cold insulation layer structure, it is theoretically calculated that the temperature rise of the medium in the tank body during transportation can be reduced by 2℃, so that zero energy input loss can be achieved.

[0061] In some embodiments, the outer cold insulation layer 6 may include any one or more of the following materials: polyurethane foam, cryogenic rubber and plastic materials, aerogel, inorganic fiber cotton, and foamed glass.

[0062] The outer cold insulation layer 6 requires a material with low thermal conductivity, at least lower than that of the tank body material. Suitable materials include polyurethane foam, cryogenic rubber and plastic materials, aerogel, inorganic fiber cotton, and foamed glass. The polyurethane foam, especially rigid polyurethane foam, has a low thermal conductivity of only 0.022–0.033 W / (m·K), and is shock-resistant and pressure-resistant, without cracking, corrosion, or peeling after curing. The cryogenic rubber and plastic materials can withstand temperatures from -200°C to 125°C, offering a wide temperature range. They not only have low thermal conductivity but also maintain elasticity in cryogenic environments, reducing the risk of low-temperature cracking failure. They also provide impact resistance and moisture barrier properties. The aerogel is a low-density, high-porosity nanoporous material with a thermal conductivity as low as 0.012 W / (m·K), making it the lowest thermal conductivity solid material currently recognized and also the lightest solid. Since it is over 80% air, it has excellent thermal insulation properties; one inch of aerogel is equivalent to the insulation function of 20 to 30 pieces of ordinary glass. The inorganic fiber cotton, including rock wool, glass fiber cotton, and aluminum silicate fiber cotton, is non-combustible, non-corrosive, insect-resistant, and non-aging, and can be sprayed. Its thermal conductivity λ can reach 0.038 W / (m·K), and it is a Class A non-combustible material. The foamed glass, also known as porous glass or foam glass, is a type of heat-insulating glass with a porosity of over 90%, composed of uniform pores. Due to its pore structure possessing the physical properties of borosilicates, it is characterized as an airtight, non-combustible, non-deformable, non-deteriorating, and non-corrosive insulation material. Overall, considering both cost and insulation performance, polyurethane foam is a better overall choice.

[0063] The outer cold insulation layer 6 can be made of the same material as the inner cold insulation layer 5, or it can be made of a different material. The outer cold insulation layer 6 can be made of a single type of material mentioned above, or it can be made of any combination of the materials mentioned above. For example, the outer cold insulation layer 6 can be a multi-layer cold insulation structure made of the different materials mentioned above.

[0064] In some embodiments, such as Figures 2-5 As shown, at least two valves 3 are provided, and the number of internal pipelines 7 corresponds to the number of valves 3. One valve 3 corresponds to one internal pipeline 7, of which one internal pipeline 7 is a gas phase pipeline 71 and the other internal pipeline 7 is a liquid phase pipeline 72.

[0065] Wherein, inside the pipe opening 2, an inner pipeline 7 extending into the tank body 1 is further provided, the material of the inner pipeline 7 can have a lower thermal conductivity than the material of the tank body 1. In order to control the input and output of the medium, at least two valves 3 are usually provided on the tank body 1, and the number of valves 3 can correspond to the number of inner pipelines 7, i.e. one valve 3 corresponds to one inner pipeline 7.

[0066] Wherein, as shown in Figure 2 or Figure 3 The inner pipeline 7 is connected to the valve 3 through the pipe opening 2 at one end and connected to the storage cavity at the other end. When storing liquefied gas, the storage cavity can be divided into a gas phase space 81 corresponding to the liquefied gas and a liquid phase space 82. According to different purposes, the inner pipeline 7 can be divided into a gas phase pipeline 71 connected to the gas phase space 81 in the tank body 1 and a liquid phase pipeline 72 connected to the liquid phase space 82 in the tank body 1, the gas phase pipeline 71 can be used to input gaseous medium into the tank body, and the liquid phase pipeline 72 can be used to output liquid medium outside the tank body 1. As shown in Figure 4 and Figure 5 The pipe opening 2 can be divided into a gas phase opening 21 and a liquid phase opening 22, the pipe opening 2 connected to the gas phase pipeline 71 is the gas phase opening 21, and the pipe opening 2 connected to the liquid phase pipeline 72 is the liquid phase opening 22. The valve 3 is further connected to an outer pipeline 73.

[0067] Wherein, the inner pipeline 7, especially the liquid phase pipeline 72, directly contacts the medium, and the thermal conductivity of the material of the inner pipeline 7 directly affects the overall cold loss of the tank body 1. Therefore, the pipeline in the embodiment uses a material with a lower thermal conductivity, such as stainless steel, which can reduce the speed of cold loss to a certain extent.

[0068] The second aspect of the present application is a transportation device as shown in Figure 1 The transportation device includes a carrier, a gas input device 9 and any of the storage devices described above, the storage device and the gas input device 9 are provided on the carrier, and the gas input device 9 is connected to the tank body 1; the gas input device 9 is used to input a protective gas into the gas phase space of the medium in the tank body 1 through the valve 3, and the protective gas does not react with the medium.

[0069] The transport device can be a liquefied gas transport vehicle. The transport device comprises a gas input device 9 connected to the gas phase port 21 of the tank 1. The gas input device 9 can introduce a protective gas into the gas phase space 81 of the medium in the tank 1 through the valve 3, wherein the protective gas is different from the medium and does not react with the medium in the use state of the tank 1. The protective gas can isolate and protect the medium. For example, nitrogen and inert gases, which are chemically inert, can be used as the protective gas. If the medium stored in the tank 1 is one of propane, propylene, and butadiene, the gas of these substances can be added as the protective gas. For example, the gas of propylene or butadiene can be introduced into the propane medium storage cavity, the gas of propane or butadiene can be introduced into the propylene medium storage cavity, and the gas of propane or propylene can be introduced into the butadiene medium storage cavity.

[0070] The valve 3 corresponding to the gas phase port 21 is connected to the gas input device 9 through the outer pipeline 73. The gas phase port 21 of the tank 1 is used to add the same gas as the medium in the tank 1 in the prior art, and then liquefied gas is formed by cooling or pressurizing. In the embodiment, the gas phase port 21 is also connected to the gas input device 9, that is, after the gaseous medium is introduced through the gas phase port 21, the protective gas is introduced into the gas phase port 21 by the gas input device 9. The protective gas loaded in the gas input device 9 is different from the medium, and can isolate the pipe opening and the liquid phase space, and plays a role of gas sealing for the structure (such as the gas phase pipeline 71) located in the gas phase space 81 (above the liquid phase space 82). In this way, by using the protective gas to form an isolation zone between the liquid phase space 82 and the valve 3, the cold loss of the liquid phase space 82 can be reduced to a certain extent.

[0071] In addition, considering that the protective gas cannot react with the medium during the use of the liquefied gas transport vehicle, nitrogen or inert gas, which is chemically stable, can be considered as the protective gas. From the cost point of view, the protective gas can be preferably nitrogen and argon.

[0072] In some embodiments, the thermal conductivity of the protective gas is lower than the gaseous thermal conductivity of the medium.

[0073] As shown in FIGS. 1, 2, 3, and 4, the protective gas is introduced into the gas phase space 81 through the gas input device 9 and the valve 3, and the protective gas is isolated from the medium in the liquid phase space 82. Figure 4 , Figure 5 As shown in FIGS. 1, 2, 3, and 4, the protective gas is introduced into the gas phase space 81 through the gas input device 9 and the valve 3, and the protective gas is isolated from the medium in the liquid phase space 82.

[0074] In some embodiments, the density of the protective gas is lower than the gaseous density of the medium.

[0075] As shown in Figure 5 When the tank body 1 is filled with the medium, the liquid phase space 82 of the medium is at the lower part of the tank, and the gaseous phase space 81 is at the upper part of the tank. When the tank body 1 is in use, if the density of the protective gas is lower than the gaseous density of the medium, the gaseous phase space 81 will be stratified due to the difference in gas density, and the valve 3 and the pipe opening 2 and other structures can be sealed by the protective gas, thereby improving the isolation effect from the medium, which can further reduce the loss of cold energy. It can be understood that if the thermal conductivity of the protective gas in this embodiment is also lower than the gaseous thermal conductivity of the medium, the effect of reducing the loss of cold energy is better.

[0076] In order to more clearly illustrate the storage device provided by the present application, the following describes the structure of the storage device according to Figures 1 to 5 The structure of the storage device is described.

[0077] A storage device, as shown in Figure 1 includes a tank body 1 surrounding a storage cavity, an outer convex shell 4 is arranged on the upper part of the tank body 1, a pipe opening 2 is arranged on the outer convex shell 4, and a valve 3 is arranged on the pipe opening 2. An accommodation space is formed on the inner side of the outer convex shell 4, an inner cold insulation layer 5 is arranged in the accommodation space, and the accommodation space separates the pipe opening 2 (and the valve 3) from the storage cavity by a certain distance. An outer cold insulation layer 6 is further arranged on the outer side of the tank body 1, and the outer cold insulation layer 6 can cover the surface of the tank body 1 as a whole or partially.

[0078] As shown in Figure 2 An embodiment of the storage device, the inner side of the pipe opening 2 is provided with an inner pipeline 7 extending into the storage cavity of the tank body 1 and communicating with the valve 3, and the valve 3 is provided with an outer pipeline 73. The tank body 1 includes a body 11 and an extension 12, and the extension 12 and the outer convex shell 4 form a closed or semi-closed accommodation space, and the inner cold insulation layer 5 is filled in the accommodation space. The outer cold insulation layer 6 not only covers the surface of the tank body 1, but also wraps the pipe opening 2.

[0079] As shown in Figure 3 An embodiment of the storage device, the inner side of the pipe opening 2 is provided with an inner pipeline 7 extending into the storage cavity of the tank body 1 and communicating with the valve 3, and the valve 3 is provided with an outer pipeline 73. The tank body 1 includes a body 11 and an opening arranged on the upper surface of the body 11, and the outer convex shell 4 is arranged at the opening and covers the opening. The inner side of the outer convex shell 4 forms an open accommodation space communicating with the storage cavity, and the inner cold insulation layer 5 can be arranged on the inner side of the outer convex shell 4 by bonding or adsorption, and fills the accommodation space. The outer cold insulation layer 6 not only covers the surface of the tank body 1, but also wraps the pipe opening 2.

[0080] As shown in Figure 4In one embodiment of the storage device shown, valve 3 is a liquid phase valve, correspondingly installed on liquid phase port 22. Liquid phase port 22 is provided with a liquid phase pipeline 72 communicating with the liquid phase valve, and valve 3 is provided with an external pipeline 73. When storing the medium, the storage chamber inside tank 1 is divided into a gas phase space 81 and a liquid phase space 82. The end of the liquid phase pipeline 72 is positioned low, extending into the liquid phase space 82 of the storage chamber.

[0081] like Figure 5 In one embodiment of the storage device shown, valve 3 is a gas phase valve, correspondingly installed on gas phase port 21, which is provided with a gas phase pipeline 71 communicating with the gas phase valve. When storing the medium, the storage chamber inside the tank 1 is divided into a gas phase space 81 and a liquid phase space 82. The end of the gas phase pipeline 71 is positioned higher, located within the gas phase space 81 of the storage chamber.

[0082] The convex shell 4 can be connected to the tank body 1 by welding or bonding, or it can be integrally formed on the tank body 1 to create the convex structure (suitable for...). Figure 5 (Structure shown). The port 2 can be connected to the valve 3 via a flange. The outer convex shell 4 and the inner pipe 7 can be made of materials with a lower thermal conductivity than the tank body 1.

[0083] A type of transportation equipment, such as Figure 1 As shown, the system includes a carrier, a gas input device 9, and any of the aforementioned storage devices. Both the storage device and the gas input device are mounted on the carrier. The gas input device 9 is connected to valve 3 (i.e., the gas phase valve) via an external pipeline (not shown in the figure). The gas input device 9 is used to introduce a protective gas into the gas phase space of the medium inside the tank 1 through the valve 3. Preferably, the thermal conductivity of the protective gas is lower than the gaseous thermal conductivity of the medium. Preferably, the density of the protective gas is lower than the gaseous density of the medium.

[0084] In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. It should be noted that "upper," "lower," "left," "right," etc., are used only for distinction and convenience of description, and do not impose any positional limitation on the embodiments of this invention. For example, "upper" in practice can be "lower," "left," "right," etc. In this invention, unless otherwise explicitly specified and limited, terms such as "assembly" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0085] In the description of the specification, the description of the terms "some embodiments", "exemplarily" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are contained in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0086] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application, and any changes or modifications made in accordance with the claims and specification of the present application shall be within the scope of the present application.

Claims

1. A storage device, characterized by, The storage device comprises: a tank body, which forms a storage cavity for storing liquid medium; an outer convex shell, which is fixedly connected to the upper outer wall surface of the tank body, and which forms a receiving space between the inner side of the outer convex shell and the tank body; a valve; an inner cold insulation layer, which is arranged in the receiving space of the outer convex shell to separate the valve and the storage cavity; the top of the outer convex shell is higher than the top of the tank body; a pipe opening, which is arranged on the outer convex shell; the storage device further comprises an outer cold insulation layer, which is wrapped around the outer surface of the tank body; the valve is connected to the pipe opening, and the outer cold insulation layer extends to cover the position where the valve is connected to the pipe opening.

2. The storage device according to claim 1, wherein: the storage device further comprises an inner pipeline, which is arranged through the inner cold insulation layer, and one end of the inner pipeline is connected to the valve, and the other end of the inner pipeline is connected to the storage cavity.

3. The storage device according to claim 2, wherein: the valve is provided in at least two, and the number of the inner pipelines corresponds to the number of the valves, one inner pipeline is provided corresponding to one valve, and one inner pipeline is a gas-phase pipeline, and the other inner pipeline is a liquid-phase pipeline.

4. The storage device according to claim 2, wherein: the tank body comprises a main body and an extension part, the main body forms the storage cavity, the extension part is arranged at the position of the storage cavity close to the receiving space, the extension part extends from the main body to the inner pipeline, and the extension part and the outer convex shell form the receiving space.

5. The storage device according to any one of claims 1 to 4, wherein: the surface of the outer convex shell is a semispherical arc surface or a semihemispherical arc surface.

6. The storage device according to any one of claims 1 to 4, wherein the valve is arranged at the top end of the outer convex shell.

7. The storage device according to claim 1, wherein: the outer cold insulation layer and / or the inner cold insulation layer is any one or several of polyurethane foaming material, deep cold series rubber and plastic material, aerogel, inorganic fiber cotton, and foaming glass.

8. A transport apparatus, characterized by The transportation equipment comprises a carrier, a gas input device, and the storage device according to any one of claims 1 to 7, the storage device and the gas input device are arranged on the carrier, and the gas input device is connected to the tank body; the gas input device is used for inputting protective gas into the tank body through the valve.

9. The transportation equipment according to claim 8, wherein: the thermal conductivity of the protective gas is lower than the gaseous thermal conductivity of the medium; and / or the density of the protective gas is lower than the gaseous density of the medium.

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