Inner cylinder support mechanism in cryogenic pressure vessel

Abstract

This utility model discloses an inner cylinder support mechanism for a cryogenic pressure vessel, comprising: 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 insulation pad, an inner insulation pad, and an insulation ring. The inner side of the reinforcing liner is welded to the inner cylinder, the inner end of the metal support block is welded to the outer side of the reinforcing liner, the fastening screws fix the metal support plate to the outer end of the metal support block, 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, the outer load-bearing plate is welded to the outer end of the annular surrounding plate, the metal support plate is located between the inner and outer load-bearing plates, the inner insulation pad is placed between the metal support plate and the inner load-bearing plate, the outer insulation pad is placed between the metal support plate and the outer load-bearing plate, and the insulation ring is fitted between the metal support plate and the annular surrounding plate. The described inner cylinder support mechanism features low heat leakage, high load-bearing capacity, high reliability, and small installation volume.

Description

Technical Field

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

[0002] Vacuum-insulated cryogenic pressure vessels consist of an outer cylinder and an inner cylinder. The inner cylinder is installed within the outer cylinder via a support mechanism. A vacuum interlayer provides insulation between the inner and outer cylinders. The inner cylinder stores cryogenic liquid. Common support mechanisms include: eight-point support structures (i.e., eight fiberglass supports), strap structures, boom structures, and cable structures. Each support mechanism has its advantages and disadvantages, but all require consideration of strength, heat conduction, and temperature compensation. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an inner cylinder support mechanism for cryogenic pressure vessels with low heat leakage, good load-bearing capacity, high support reliability, and small installation volume.

[0004] To solve the above problems, the technical solution adopted by this utility model is as follows: an inner cylinder support mechanism in a cryogenic pressure vessel, comprising: 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, an inner heat insulation pad, and an insulation ring. The inner side of the reinforcing liner is welded to the outer wall of the inner cylinder, and the inner end of the metal support block is welded to the outer side of the reinforcing liner. The 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 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. The plate is welded to the outer end of the annular enclosure. The metal support plate is located between the inner and outer load-bearing plates. The inner insulation pad is placed between the metal support plate and the inner load-bearing plate, and the inner load-bearing plate supports the metal support plate through the inner insulation pad. The 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 through the outer insulation pad. The insulation ring is fitted between the metal support plate and the annular enclosure. The left and right sides of the metal support plate abut against the insulation ring, so that the inner cylinder can be positioned in the circumferential direction. The inner load-bearing plate and the inner insulation pad are provided with through holes to avoid the metal support block. The outer load-bearing plate and the outer insulation pad are also provided with through holes to avoid the fastening screws.

[0005] Furthermore, in the aforementioned cryogenic pressure vessel, the inner cylinder support mechanism has a sliding gap between the metal support plate and the insulation ring in the front-back direction, allowing the metal support plate to slide back and forth in the channel enclosed by the outer insulation pad, the inner insulation pad, and the insulation ring, thereby enabling the metal support plate to compensate for the axial thermal expansion and contraction of the inner cylinder through the back-back sliding.

[0006] Furthermore, in the aforementioned cryogenic pressure vessel, the inner cylinder support mechanism includes a double-layer liner structure.

[0007] Furthermore, in the aforementioned cryogenic pressure vessel, the inner cylinder support mechanism is further reinforced by welding triangular ribs between the annular shroud and the reinforcing ribs on the inner wall of the outer cylinder.

[0008] Furthermore, in the aforementioned cryogenic pressure vessel, the inner cylinder support mechanism includes several reinforcing ribs arranged at intervals in the annular circumference outside the outer load-bearing plate.

[0009] Furthermore, in the aforementioned cryogenic pressure vessel, the inner cylinder support mechanism includes a through hole in the middle of the metal support block.

[0010] The advantages of this utility model are as follows: The inner cylinder support mechanism uses a stable annular surrounding plate, an inner load-bearing plate, and an outer load-bearing plate to support the metal support plate, which makes the inner cylinder support mechanism have good load-bearing capacity, high support reliability, small installation volume, and can withstand both tensile stress and compressive stress. Therefore, the number of support points for the inner cylinder can be reduced after adopting the inner cylinder support mechanism. 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 beautiful. In addition, the use of an outer heat insulation pad, an inner heat insulation pad, and a heat insulation ring to isolate heat conduction gives the inner cylinder support mechanism the advantage of low heat leakage. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the inner cylinder support mechanism in the cryogenic pressure vessel of this utility model.

[0012] Figure 2 for Figure 1 A structural schematic diagram in sectional view (AA).

[0013] Figure 3 for Figure 1 Another structural schematic diagram shown in the AA section. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0015] like Figure 1 , Figure 2 , Figure 3As shown, the inner cylinder support mechanism in the cryogenic pressure vessel 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, an outer insulation pad 10, an inner insulation pad 11, and an 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 screws 6 pass through the metal support plate 5 and are screwed 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 fitted around the outer side of the metal support plate 5 and welded to the reinforcing ribs 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, and the outer load-bearing plate 9 is welded to the outer end of the annular surrounding plate 7. In the middle, the metal support plate 5 is located between the inner load-bearing plate 8 and the outer load-bearing plate 9. The inner heat insulation pad 11 is placed 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. 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. The left and right sides of the metal support plate 5 abut against the heat insulation ring 12, so that the inner cylinder 1 can be positioned in the circumferential direction. The inner load-bearing plate 8 and the inner heat insulation pad 11 are provided with through holes to avoid the metal support block 4. The outer load-bearing plate 9 and the outer heat insulation pad 10 are also provided with through holes to avoid the fastening screw 6.

[0016] In practical applications, the inner cylinder support mechanism is further divided into two structures; both structures are used in the inner cylinder support.

[0017] The first structure: such as Figure 2 As shown, there is no gap between the metal support plate 5 and the insulation ring 12 in the front-back direction of the metal support plate 5, and the metal support plate 5 abuts against the insulation ring 12 in all four directions: front, back, left, and right. The second structure: such as Figure 3 As shown, in the front-back direction of the metal support plate 5, there is a sliding gap 17 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, thereby enabling the metal support plate 5 to compensate for the thermal expansion and contraction of the inner cylinder 1 in the axial direction by sliding back and forth.

[0018] 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.

Claims

1. An inner cylinder support mechanism in a cryogenic pressure vessel, characterized in that: include: The system includes a reinforcing liner, metal support blocks, metal support plates, fastening screws, annular surround 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 are screwed into the metal support block to fix the metal support plate to the outer end of the metal support block. The annular surround 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 surround plate, and the outer load-bearing plate is welded to the outer end of the annular surround plate. The metal support plate is located... Between the inner and outer load-bearing plates, an inner insulation pad is placed between the metal support plate and the inner load-bearing plate, and the inner load-bearing plate supports the metal support plate through the 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 through the outer insulation pad. An insulation ring is fitted between the metal support plate and the annular surrounding plate, and the left and right sides of the metal support plate abut against the insulation ring, so that the inner cylinder can be positioned in the circumferential direction. Through holes are provided on the inner load-bearing plate and the inner insulation pad to avoid the metal support block, and through holes are also provided on the outer load-bearing plate and the outer insulation pad to avoid the fastening screws.

2. The inner cylinder support mechanism in the cryogenic pressure vessel according to claim 1, characterized in that: In the front-back direction of the metal support plate, there is a sliding gap between the metal support plate and the insulation ring, which allows the metal support plate to slide back and forth in the channel surrounded by the outer insulation pad, the inner insulation pad, and the insulation ring. This allows the metal support plate to compensate for the thermal expansion and contraction of the inner cylinder in the axial direction by sliding back and forth.

3. The inner cylinder support mechanism in a cryogenic pressure vessel according to claim 1 or 2, characterized in that: The reinforcing liner has a double-layer structure.

4. The inner cylinder support mechanism in a cryogenic pressure vessel according to claim 1 or 2, characterized in that: Triangular ribs are welded between the reinforcing ribs on the annular surrounding plate and the inner wall of the outer cylinder for reinforcement.

5. The inner cylinder support mechanism in a cryogenic pressure vessel according to claim 1 or 2, characterized in that: Several reinforcing ribs are welded to the annular surrounding plate on the outside of the outer load-bearing plate, arranged at intervals.

6. The inner cylinder support mechanism in a cryogenic pressure vessel according to claim 1 or 2, characterized in that: A through hole is provided in the middle of the metal support block.

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