Cryogenic container

Abstract

The present disclosure provides a cryogenic container, comprising: an outer tank; an inner tank disposed within the outer tank with a gap therebetween; an interlayer pipe hermetically penetrating from inside the inner tank through the inner tank and the outer tank to the outside of the outer tank and fixedly connected to the inner tank and the outer tank; a fixing section fixed to the outside of the outer tank and sleeved on the interlayer pipe, the fixing section including a cylinder section and a fixing seat disposed at one end of the cylinder section away from the outer tank, the interlayer pipe passing through the cylinder section and being clamped and fixed by the fixing seat. Through the above two-point fixation, it is ensured that the interlayer pipe will not warp during the filling of thermal insulation, solving the technical problem in the prior art that the interlayer pipeline is prone to deformation during the filling of thermal insulation material, resulting in easy warping when it extends out of the outer tank.

Description

Technical Field

[0001] The present disclosure relates to the field of low-temperature storage technology, and in particular to a low-temperature container. Background Art

[0002] At present, conventional cryogenic containers have an inner tank made of austenitic stainless steel and an outer tank made of low alloy. When the sandwich pipe is led out from the outer head, a simple and easy-to-make pipe cap, small head or folding plate is used. Since the positioning size requirements for the pipe are not high, the pipe cap, small head or folding plate is actually matched with the pipe position during the manufacturing process. The vibration, extrusion or other factors when the inner and outer tank sandwich is filled with insulation materials cause the pipeline to be severely deformed, and the pipeline will be lifted when it extends from the outer tank, affecting the next piping process of the pipeline. The design document cannot meet the requirements for high-precision positioning size of the pipe outlet. Summary of the invention

[0003] One purpose of the present disclosure is to solve the technical problem in the prior art that the sandwich pipe is easily deformed when filled with insulation materials, resulting in the sandwich pipe being easily warped when extending from the outer tank.

[0004] In order to solve the above technical problems, the present disclosure adopts the following technical solutions:

[0005] According to one aspect of the present disclosure, the present disclosure provides a low temperature container, comprising:

[0006] outer tank;

[0007] An inner tank is disposed in the outer tank and has a gap between the inner tank and the outer tank;

[0008] A sandwich tube, the sandwich tube is sealed inside the tank body, penetrates the inner tank and the outer tank to the outside of the low-temperature container, and is fixedly connected to the inner tank and the outer tank;

[0009] The fixing section is fixed to the outside of the outer tank and sleeved on the sandwich tube. The fixing section includes a barrel section and a fixing seat arranged at one end of the barrel section away from the outer tank. The sandwich tube passes through the fixing seat, and the fixing seat clamps and fixes the sandwich tube.

[0010] It can be seen from the above technical solutions that the present disclosure has at least the following advantages and positive effects:

[0011] In the present disclosure, a fixing section is arranged on the outer side of the outer tank and sleeved on the outer periphery of the sandwich tube. The fixing seat at the outer end of the fixing section clamps and fixes the sandwich tube. At the same time, the sandwich tube is also fixedly connected to the outer tank. The fixing at the above two points ensures that the sandwich tube will not warp during the filling and insulation process, solving the technical problem in the prior art that the sandwich tube is easily deformed when filling the insulation material, resulting in it being easily warped when extending from the outer tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural diagram of an embodiment of the cryogenic container of the present disclosure.

[0013] Figure 2 is Figure 1 A partial structural diagram of the cryogenic container shown.

[0014] Figure 3 is Figure 1 A structural diagram of the interlayer pipe of the cryogenic container shown. Specific embodiments

[0015] Although the present disclosure can be easily embodied in different forms of embodiments, only some specific embodiments are shown in the drawings and will be described in detail in this specification. At the same time, it can be understood that this specification should be regarded as an exemplary illustration of the principles of the present disclosure and is not intended to limit the present disclosure to what is described herein.

[0016] Thus, a feature pointed out in this specification will be used to illustrate one of the features of an embodiment of the present disclosure, rather than implying that each embodiment of the present disclosure must have the described feature. In addition, it should be noted that this specification describes many features. Although some features can be combined together to show possible system designs, these features can also be used in other combinations that are not explicitly described. Thus, unless otherwise stated, the described combinations are not intended to be limiting.

[0017] In the embodiments shown in the drawings, the indication of directions (such as up, down, left, right, front and back) is used to explain that the structures and movements of various elements of the present disclosure are not absolute but relative. When these elements are in the positions shown in the drawings, these explanations are appropriate. If the descriptions of the positions of these elements change, then the indication of these directions also changes accordingly.

[0018] The following further elaborates some embodiments of the present disclosure in conjunction with the drawings of this specification. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0019] The present disclosure provides a cryogenic container. The cryogenic container can be a storage tank, a transport tank, and other tank containers for storing and transporting cryogenic media such as liquefied ethylene, liquefied natural gas, liquid nitrogen, and liquid hydrogen, etc. The present disclosure does not make a limitation here. As long as the container can be used for storing and transporting cryogenic media, it is within the scope of protection of the present disclosure. Here, a storage tank for storing cryogenic media is taken as an example.

[0020] Please refer to Figure 1, the cryogenic container includes an outer tank 10, an inner tank 20, an interlayer pipe 30, and a fixing section 40. The inner tank 20 is disposed inside the outer tank 10 with a gap therebetween. The interlayer pipe 30 penetrates through the inner tank 20 and the outer tank 10 from inside the inner tank 20 to the outside of the outer tank 10 in a sealed manner and is fixedly connected to the inner tank 20 and the outer tank 10. The fixing section 40 is fixed to the outside of the outer tank 10 and sleeved on the interlayer pipe 30. The interlayer pipe 30 passes through the fixing section 40 and is clamped and fixed with the fixing section 40.

[0021] Among them, the outer tank 10 includes an outer cylindrical body 11 and outer end heads 12 provided at both ends of the outer cylindrical body 11. The inner tank 20 includes an inner cylindrical body 21 and inner end heads 22 provided at both ends of the inner cylindrical body 21.

[0022] It can be understood that the interlayer pipe 30 can be a straight pipe or a bent pipe. When it is a straight pipe, it can penetrate through the inner cylindrical body 21 and the outer cylindrical body 11 vertically to the outside of the outer tank 10, or penetrate through the inner end head 22 and the outer end head 12 in a direction parallel to the generatrix of the tank body to the outside of the outer tank 10.

[0023] When the interlayer pipe 30 is a bent pipe, it can include a bending portion 31 located in the middle section of the interlayer pipe 30 and straight portions 32 located at both ends of the bending portion 31.

[0024] Please refer to Figure 3 , the above-mentioned straight portion 32 includes a first straight portion 321 and a second straight portion 322, both of which are arranged in a direction parallel to the generatrix of the tank body and are not on the same straight line. Among them, the first straight portion 321 is connected through the outer end head 12, and the second straight portion 322 is connected through the inner end head 22.

[0025] The above-mentioned bending portion 31 can include a first bending portion 311 and a second bending portion 312. One end of the first bending portion 311 and one end of the second bending portion 312 are bent and connected, the other end of the first bending portion 311 is bent and connected to the first straight portion 321, and the other end of the second bending portion 312 is bent and connected to the second straight portion 322.

[0026] It can be understood that an inner tank joint 34 can also be provided at one end of the above-mentioned interlayer pipe 30 facing the inner tank 20. One end of the inner tank joint 34 penetrates through the inner tank 20 in a sealed manner, and the other end is connected to the bending portion 31 or the straight portion 32.

[0027] Please refer to Figure 2 , the fixing section 40 includes a barrel section 41 and a fixing seat 42. The barrel section 41 is disposed around the interlayer pipe 30, and its two ends are respectively fixedly connected to the outer tank 10 and the fixing seat 42. The interlayer pipe 30 passes through the barrel section 41 and is clamped and fixed with the fixing seat 42.

[0028] The fixing base 42 includes a base body 421, a cover body 422 and a gasket 423. The base body 421 is fixedly connected to the cylinder section 41 and clamps and fixes the sandwich tube 30. A groove 4211 is formed on the surface of the base body 421 facing away from the cylinder section 41. The cover body 422 is connected to the surface of the base body 421 facing away from the cylinder section 41 and covers the groove 4211. The gasket 423 is accommodated in the groove 4211 to seal the groove 4211.

[0029] It can be understood that in Figure 1 the illustrated embodiment, the fixing section 40 is fixed to the outer head 12. After the first straight portion 321 passes through the outer head 12, it then passes through the cylinder section 41 and is clamped and fixed with the fixing base 42.

[0030] It can be understood that the above cryogenic container may further include a lead-out joint 50, which is disposed on and passes through the outer tank 10 and is sleeved on the sandwich tube 30. One end thereof is fixedly connected to the sandwich tube 30, and the other end penetrates through the outer tank 10 in a sealed manner. The lead-out joint 50 includes a penetrating portion 51 and a fixing portion 52. The penetrating portion 51 penetrates through the outer tank 10 in a sealed manner. The fixing portion 52 is disposed at one end of the penetrating portion 51 facing the fixing section 40 and is hermetically connected to the sandwich tube 30. In this embodiment, the sealing connection method is full circumferential welding, and in other solutions, connection methods such as fixing with a sealing ring can also be adopted. At the same time, in this embodiment, the outer diameter of the outer edge of the fixing portion 52 is smaller than the outer diameter of the outer edge of the penetrating portion 51 to ensure the welding quality between the sandwich tube 30 and the lead-out joint 50.

[0031] In the above embodiment, the inner tank 20, the sandwich tube 30, the fixing section 40 and the lead-out joint 50 are all made of austenitic stainless steel to reduce the cold brittleness of the relevant materials, improve the toughness of the above components in a low-temperature environment, and avoid brittle fracture in a low-temperature environment, thereby affecting the structural strength of the cryogenic container. At the same time, to ensure the connection strength and tightness, the inner tank 20 and the sandwich tube 30, the sandwich tube 30 and the fixing section 40, the fixing section 40 and the outer tank 10, the outer tank 10 and the lead-out joint 50, and the lead-out joint 50 and the sandwich tube 30 are all connected by welding and fixing methods to avoid leakage of low-temperature media and heat-insulating media.

[0032] Although the present disclosure has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present disclosure can be embodied in many 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 broadly construed within the spirit and scope defined by the appended claims. Therefore, all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A cryogenic container, characterized in that, Comprising: An outer tank; An inner tank, disposed within the outer tank and having a gap therebetween; A sandwich tube, hermetically penetrating from within the inner tank through the inner tank and the outer tank to the outside of the outer tank, and fixedly connected to the inner tank and the outer tank; A fixing section, fixed to the outside of the outer tank and sleeved on the sandwich tube. The fixing section includes a cylinder section and a fixing seat disposed at one end of the cylinder section away from the outer tank. The sandwich tube passes through the cylinder section and is clamped and fixed by the fixing seat. The fixing seat includes a seat body and a cover body. The seat body is fixedly connected to the cylinder section and clamps and fixes the sandwich tube. A groove is formed on a surface of the seat body away from the cylinder section. The cover body is connected to the surface of the seat body away from the cylinder section and covers the groove; The sandwich tube is welded to the cover body of the fixing seat; The cryogenic container further comprises: A lead-out joint, disposed on the outer tank and sleeved on the sandwich tube. One end of the lead-out joint is fixedly connected to the sandwich tube, and the other end hermetically penetrates the outer tank. The lead-out joint includes a penetrating portion and a fixing portion. The penetrating portion hermetically penetrates the outer tank. The fixing portion is disposed at one end of the penetrating portion facing the fixing section and is hermetically connected to the sandwich tube. The outer diameter of the outer edge of the fixing portion is smaller than the outer diameter of the outer edge of the penetrating portion.

2. The cryogenic container according to claim 1, wherein The fixing seat further comprises: A gasket, accommodated in the groove to seal the groove.

3. The cryogenic container according to claim 1, characterized in that, The sandwich tube comprises: A bending portion, disposed in the middle section of the sandwich tube to bend the sandwich tube; A straight portion, disposed at both ends of the bending portion and bent and connected to the bending portion.

4. The cryogenic container according to claim 3, characterized in that, The inner tank includes an inner cylinder body and inner end heads disposed at both ends of the inner cylinder body. The outer tank includes an outer cylinder body sleeved outside the inner cylinder body and outer end heads disposed at both ends of the outer cylinder body. The outer end heads are correspondingly disposed with the inner end heads. The two straight portions respectively penetrate through the inner end heads and the outer end heads and are not on the same straight line. One end of the bending portion is bent and connected to the other straight portion through multiple bends by one straight portion.

5. The cryogenic container according to claim 1, characterized in that, The lead-out joint is an austenitic joint.

6. The cryogenic container according to claim 1, wherein, One end of the sandwich tube facing the inner tank is provided with an inner tank joint, and the inner tank joint hermetically penetrates the inner tank.

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