Vacuum-insulated cryogenic pressure vessel

Abstract

This utility model discloses a vacuum-insulated cryogenic pressure vessel, comprising: an outer cylinder and an inner cylinder, with a vacuum interlayer between the inner and outer cylinders. The support mechanism includes: two fixed support structures and two sliding support structures. The two fixed support structures are installed on the left and right sides of the front bottom of the vacuum interlayer, and the two sliding support structures are installed on the left and right sides of the rear bottom of the vacuum interlayer. In the fixed support structures, a metal support plate abuts against the insulation ring in all four directions (front, back, left, and right). In the sliding support structures, a sliding gap exists between the metal support plate and the insulation ring in the front-back direction, allowing the metal support plate to slide back and forth. Mounting holes are provided on the outer sidewall of the outer cylinder of each support structure, and each mounting hole is sealed by welding with a cover plate. The described vacuum-insulated cryogenic pressure vessel has fewer support points and lower heat leakage, the inner cylinder can be reliably fixed, and the outer cylinder surface is continuous and aesthetically pleasing.

Description

Technical Field

[0001] This utility model relates to the field of pressure vessels, specifically to vacuum-insulated cryogenic pressure vessels. Background Technology

[0002] Vacuum-insulated cryogenic pressure vessels consist of an outer cylinder and an inner cylinder. The inner cylinder stores cryogenic liquid and is fixed to the outer cylinder by a support mechanism. A vacuum interlayer is provided between the inner and outer cylinders for insulation. The support mechanism is typically a traditional eight-point support structure. While this structure can fix the inner cylinder in the outer cylinder, it has drawbacks such as multiple stress points, high thermal conductivity, and the top support protruding from the outer cylinder surface, resulting in discontinuities and an unsightly appearance. Furthermore, due to its structure, the support cannot withstand tensile stress. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a vacuum-insulated cryogenic pressure vessel with fewer support points and lower heat leakage, reliable fixation of the inner cylinder, and a continuous and aesthetically pleasing outer cylinder surface.

[0004] To solve the above problems, the technical solution adopted by this utility model is as follows: a vacuum-insulated cryogenic pressure vessel, comprising: an outer cylinder and an inner cylinder, the inner cylinder being fixed within the outer cylinder by a support mechanism, and a vacuum interlayer being provided between the inner and outer cylinders. The support mechanism comprises: two fixed support structures and two sliding support structures, the two fixed support structures being installed on the left and right sides of the front bottom of the vacuum interlayer, and the two sliding support structures being installed on the left and right sides of the rear bottom of the vacuum interlayer. Each support structure includes: a reinforcing liner, a metal support block, and a metal support plate. The system consists of fastening screws, annular surrounding plates, inner load-bearing plates, outer load-bearing plates, outer insulation pads, inner insulation pads, and insulation rings. The inner side of the reinforcing liner is welded to the outer wall of the inner cylinder. The inner end of the metal support block is welded to the outer side of the reinforcing liner. Fastening screws pass through the metal support plate and screw into the metal support block to fix the metal support plate to its outer end. The annular surrounding plate is fitted around the outer side of the metal support plate and welded to the reinforcing ribs on the inner wall of the outer cylinder. The inner load-bearing plate is welded to the inner end of the annular surrounding plate, and the outer load-bearing plate is welded to the outer end of the annular surrounding plate. The metal support plate is located within the inner... Between the load-bearing plate and the outer load-bearing plate, an inner insulation pad is placed between the metal support plate and the inner load-bearing plate, supporting the metal support plate. Similarly, an outer insulation pad is placed between the metal support plate and the outer load-bearing plate, supporting the metal support plate. An insulation ring is fitted between the metal support plate and the annular surrounding plate, with the left and right sides of the metal support plate abutting against the insulation ring, allowing the inner cylinder to be positioned circumferentially. Through holes are provided on the inner load-bearing plate and the inner insulation pad to allow for clearance between the metal support blocks. The outer load-bearing plate and the outer insulation pad also have... Through holes are provided to avoid fastening screws; in the fixed support structure: the metal support plate abuts against the insulation ring in all four directions (front, back, left, and right); in the sliding support structure: there is a sliding gap between the metal support plate and the insulation ring in the front-back direction of the metal support plate, so that the metal support plate can slide back and forth in the channel surrounded by the outer insulation pad, the inner insulation pad, and the insulation ring, thereby compensating for the axial thermal expansion and contraction of the inner cylinder by sliding back and forth; each support structure has mounting holes on the outer side wall of the outer cylinder, and each mounting hole is sealed by welding with a cover plate.

[0005] Furthermore, in the aforementioned vacuum-insulated cryogenic pressure vessel, the reinforcing liner has a double-layer plate structure.

[0006] Furthermore, in the aforementioned vacuum-insulated cryogenic pressure vessel, triangular ribs are welded between the reinforcing ribs on the annular surrounding plate and the inner wall of the outer cylinder for reinforcement.

[0007] Furthermore, in the aforementioned vacuum-insulated cryogenic pressure vessel, several reinforcing ribs arranged at intervals are welded into the annular surrounding plate outside the outer load-bearing plate.

[0008] Furthermore, in the aforementioned vacuum-insulated cryogenic pressure vessel, the metal support block has a through hole in the middle.

[0009] The advantages of this utility model are as follows: The vacuum insulated cryogenic pressure vessel uses a stable annular surrounding plate, inner load-bearing plate, and outer load-bearing plate to support the metal support plate, which makes the support mechanism have good load-bearing capacity, high support reliability, small installation volume, and can withstand both tensile stress and compressive stress. This reduces the number of support points on the inner cylinder and reduces heat leakage. Due to the small installation volume, the outer cylinder does not need to protrude outward to avoid it, so the surface of the outer cylinder can be continuous and aesthetically pleasing. In addition, the use of outer insulation pad, inner insulation pad, and insulation ring to isolate heat conduction gives the pressure vessel the advantage of low heat leakage. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the vacuum-insulated cryogenic pressure vessel described in this utility model.

[0011] Figure 2 for Figure 1 A schematic diagram of the structure as shown in the AA section.

[0012] Figure 3 for Figure 2 A magnified structural diagram at point B in the middle.

[0013] Figure 4 for Figure 3 A schematic diagram of the fixed support structure viewed in the middle CC section.

[0014] Figure 5 for Figure 3 A schematic diagram of the sliding support structure viewed in the middle CC section. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0016] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, a vacuum-insulated cryogenic pressure vessel includes an outer cylinder 2 and an inner cylinder 1. The inner cylinder 1 is fixed to the outer cylinder 2 by a support mechanism. A vacuum interlayer is provided between the inner cylinder 1 and the outer cylinder 2. The support mechanism includes two fixed support structures 18 and two sliding support structures 19. The two fixed support structures 18 are installed on the left and right sides of the front bottom of the vacuum interlayer, and the two sliding support structures 19 are installed on the left and right sides of the rear bottom of the vacuum interlayer. Each support structure includes: a reinforcing liner 3, a metal support block 4, a metal support plate 5, fastening screws 6, an annular surrounding plate 7, an inner load-bearing plate 8, an outer load-bearing plate 9, and an outer insulation pad. 10. Inner insulation pad; 11. Insulation ring; 12. The inner side of the reinforcing liner 3 is welded to the outer wall of the inner cylinder 1; the inner end of the metal support block 4 is welded to the outer side of the reinforcing liner 3; the fastening screw 6 passes through the metal support plate 5 and screws into the metal support block 4 to fix the metal support plate 5 to the outer end of the metal support block 4; the annular surrounding plate 7 is wrapped around the outer side of the metal support plate 5 and welded to the reinforcing rib 13 on the inner wall of the outer cylinder 2; the inner load-bearing plate 8 is welded to the inner end of the annular surrounding plate 7; the outer load-bearing plate 9 is welded to the outer end of the annular surrounding plate 7; the metal support plate 5 is located between the inner load-bearing plate 8 and the outer load-bearing plate 9; the inner insulation pad 11 is used as a pad. Between the metal support plate 5 and the inner load-bearing plate 8, the inner load-bearing plate 8 supports the metal support plate 5 through the inner heat insulation pad 11. The outer heat insulation pad 10 is placed between the metal support plate 5 and the outer load-bearing plate 9, and the outer load-bearing plate 9 supports the metal support plate 5 through the outer heat insulation pad 10. The heat insulation ring 12 is fitted between the metal support plate 5 and the annular surrounding plate 7, with the left and right sides of the metal support plate 5 abutting against the heat insulation ring 12, allowing the inner cylinder 1 to be positioned circumferentially. Through holes are provided on the inner load-bearing plate 8 and the inner heat insulation pad 11 to allow the metal support block 4 to pass through. Through holes are also provided on the outer load-bearing plate 9 and the outer heat insulation pad 10 for fastening. Screw 6 is avoided; in the fixed support structure 18: the metal support plate 5 abuts against the insulation ring 12 in all four directions (front, back, left, and right); in the sliding support structure 19: in the front and back directions of the metal support plate 5, there is a sliding gap between the metal support plate 5 and the insulation ring 12, so that the metal support plate 5 can slide back and forth in the channel surrounded by the outer insulation pad 10, the inner insulation pad 11, and the insulation ring 12, so that the metal support plate 5 can compensate for the thermal expansion and contraction of the inner cylinder 1 in the axial direction by sliding back and forth; each support structure has a mounting hole 20 on the side wall of the outer cylinder 2, and each mounting hole 20 is sealed by welding with a cover plate 21.

[0017] In this embodiment, for better reinforcement, the reinforcing liner 3 is a double-layer plate structure. Triangular ribs 14 are welded between the reinforcing ribs 13 on the inner wall of the annular surrounding plate 7 and the outer cylinder 2 for further reinforcement. Three reinforcing ribs 15 arranged at intervals are welded to the annular surrounding plate 7 outside the outer load-bearing plate 9. A through hole 16 is provided in the middle of the metal support block 4 to facilitate welding and reduce weight. For ease of installation, the inner insulation pad 11 and the insulation ring 12 can be made as a single piece, and the annular surrounding plate 7 can be formed by welding multiple long strips together.

[0018] During production, the reinforcing liner 3 is first welded to the inner cylinder 1 through the mounting hole 20. Then, the inner end of the metal support block 4 is welded to the outer end of the reinforcing liner 3. Next, the inner load-bearing plate 8 is welded to the inner end of the annular surrounding plate 7. Then, the annular surrounding plate 7 is looped around the outer side of the metal support block 4 and welded to the reinforcing rib 13 on the inner side wall of the outer cylinder 2. Next, the inner heat insulation pad 11 and the heat insulation ring 12 are installed in place. Then, the metal support plate 5 is fixed to the outer end of the metal support block 4 by screwing the fastening screw 6 through the metal support plate 5 into the metal support block 4. Next, the outer heat insulation pad 10 is installed in place. Then, the outer load-bearing plate 9 is welded to the outer port of the annular surrounding plate 7. Then, each reinforcing rib 15 is welded. Finally, the cover plate 21 is welded to close the mounting hole 20.

Claims

1. A vacuum insulated cryogenic pressure vessel comprising: The system comprises an outer cylinder and an inner cylinder, with the inner cylinder fixed within the outer cylinder by a support mechanism. A vacuum interlayer is provided between the inner and outer cylinders. The support mechanism includes two fixed support structures and two sliding support structures. The two fixed support structures are installed on the left and right sides of the front bottom of the vacuum interlayer, and the two sliding support structures are installed on the left and right sides of the rear bottom of the vacuum interlayer. Each support structure includes: a reinforcing liner, a metal support block, a metal support plate, fastening screws, an annular surrounding plate, an inner load-bearing plate, an outer load-bearing plate, an outer heat insulation pad, and an inner... The inner side of the insulation pad, insulation ring, and reinforcing liner is welded to the outer wall of the inner cylinder. The inner end of the metal support block is welded to the outer side of the reinforcing liner. Fastening screws pass through the metal support plate and are screwed into the metal support block to fix the metal support plate to the outer end of the metal support block. The annular shroud is fitted around the outer side of the metal support plate and welded to the reinforcing ribs on the inner wall of the outer cylinder. The inner load-bearing plate is welded to the inner end of the annular shroud, and the outer load-bearing plate is welded to the outer end of the annular shroud. The metal support plate is located between the inner and outer load-bearing plates, and the inner insulation pad is placed on top of the metal support plate. Between the inner support plate and the outer load-bearing plate, the inner load-bearing plate supports the metal support plate via an inner insulation pad. An outer insulation pad is placed between the metal support plate and the outer load-bearing plate, and the outer load-bearing plate supports the metal support plate via an outer insulation pad. An insulation ring is fitted between the metal support plate and the annular surrounding plate, with the left and right sides of the metal support plate abutting against the insulation ring, allowing the inner cylinder to be positioned circumferentially. Through holes are provided on the inner load-bearing plate and the inner insulation pad to allow clearance for the metal support blocks. Through holes are also provided on the outer load-bearing plate and the outer insulation pad for fastening screws. To avoid collisions; in the fixed support structure: the metal support plate abuts against the insulation ring in all four directions (front, back, left, and right); in the sliding support structure: there is a sliding gap between the metal support plate and the insulation ring in the front-back direction of the metal support plate, allowing the metal support plate to slide back and forth in the channel surrounded by the outer insulation pad, inner insulation pad, and insulation ring, thereby compensating for the axial thermal expansion and contraction of the inner cylinder by sliding back and forth; each support structure has mounting holes on the outer sidewall of the outer cylinder, and each mounting hole is sealed by welding with a cover plate.

2. The vacuum insulated cryogenic pressure vessel of claim 1, wherein: The reinforcing liner has a double-layer structure.

3. The vacuum insulated cryogenic pressure vessel of claim 1 or 2, wherein: Triangular ribs are welded between the reinforcing ribs on the annular surrounding plate and the inner wall of the outer cylinder for reinforcement.

4. The vacuum insulated cryogenic pressure vessel of claim 1 or 2, wherein: Several reinforcing ribs are welded to the annular surrounding plate on the outside of the outer load-bearing plate, arranged at intervals.

5. The vacuum insulated cryogenic pressure vessel of claim 1 or 2, wherein: A through hole is provided in the middle of the metal support block.

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