Vacuum insulation cryogenic pressure vessel
By improving the support mechanism, adopting fixed and sliding support structures, and combining annular panels and insulating pads, the problems of multiple support points and high heat conductivity are solved, and a vacuum insulated cryogenic pressure vessel with high reliability and low heat leakage is realized.
Patent Information
- Application Number
- CN202510965689.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-14
- Publication Date
- 2025-09-30
AI Technical Summary
Existing vacuum insulated cryogenic pressure vessels have many support points, resulting in large heat conduction, discontinuous and unsightly outer cylinder surface, and the support structure cannot withstand tensile stress.
The support mechanism includes two fixed support structures and two sliding support structures. The fixed support structure rests against the insulation ring in four directions, and the sliding support structure slides in the axial direction to compensate for thermal expansion and contraction. It is supported by the annular enclosure, inner load-bearing plate, outer load-bearing plate and insulation pad, which reduces support points and reduces heat conduction.
It achieves high support reliability, can withstand tensile stress and compressive stress, reduces heat leakage, has a continuous and beautiful outer cylinder surface, and has a small installation volume.
Smart Images
Figure CN120720529A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of pressure vessels, and in particular to a vacuum insulated cryogenic pressure vessel. Background Art
[0002] A vacuum-insulated cryogenic pressure vessel consists of an outer cylinder and an inner cylinder. The inner cylinder stores cryogenic liquid and is secured to the outer cylinder by a support mechanism. A vacuum interlayer provides insulation between the two cylinders. This support mechanism typically uses a traditional eight-point support structure. While this structure secures the inner cylinder within the outer cylinder, it suffers from numerous stress points, high heat conduction, and a discontinuous and unsightly outer surface caused by the top support protruding from the outer cylinder. Furthermore, due to structural reasons, the support cannot withstand tensile stress. Summary of the Invention
[0003] The technical problem to be solved by the present invention is to provide a vacuum insulated cryogenic pressure vessel with fewer supporting points, low heat leakage, reliable fixation of the inner cylinder and continuous and beautiful outer cylinder surface.
[0004] In order to solve the above problems, the technical solution adopted by the present invention is: a vacuum insulated cryogenic pressure vessel, comprising: an outer cylinder and an inner cylinder, the inner cylinder is fixed in the outer cylinder by a supporting mechanism, and a vacuum interlayer is provided between the inner cylinder and the outer cylinder, characterized in that: the supporting mechanism comprises: two fixed supporting structures and two sliding supporting structures, the two fixed supporting structures are installed on the left and right sides of the front bottom of the vacuum interlayer, the two sliding supporting structures are installed on the left and right sides of the rear bottom of the vacuum interlayer, and each supporting structure comprises: a reinforcing liner, a metal support block, a metal support plate , fastening screws, annular enclosure, inner bearing plate, outer bearing plate, outer insulation pad, inner insulation pad, insulation ring, the inner side of the reinforcement lining is welded to the outer side wall of the inner cylinder, the inner end of the metal support block is welded to the outer side of the reinforcement lining, the fastening screws pass through the metal support plate and screw into the metal support block to fix the metal support plate on the outer end of the metal support block, the annular enclosure is sleeved on the outside of the metal support plate and welded to the reinforcement ribs on the inner side wall of the outer cylinder, the inner bearing plate is welded to the inner end of the annular enclosure, the outer bearing plate is welded to the outer port of the annular enclosure, and the metal support plate is located inside Between the load-bearing plate and the outer load-bearing plate, the inner insulation pad is padded between the metal support plate and the inner load-bearing plate, the inner load-bearing plate supports the metal support plate through the inner insulation pad, the outer insulation pad is padded between the metal support plate and the outer load-bearing plate, the outer load-bearing plate supports the metal support plate through the outer insulation pad, the insulation ring is sleeved between the metal support plate and the annular enclosure, the left and right sides of the metal support plate are respectively 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, and the outer load-bearing plate and the outer insulation pad are also provided with through holes. Through holes are provided to avoid fastening screws; in the fixed support structure: the metal support plate is against the insulation ring in four directions of front, back, left and right; in the sliding support structure: in the front and back directions of the metal support plate, there is a sliding gap between the metal support plate and the insulation ring, 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, so that the metal support plate can compensate for the axial thermal expansion and contraction of the inner cylinder by sliding back and forth; mounting holes are opened on the side walls of the outer cylinder outside each support structure, and each mounting hole is welded and sealed by a cover plate.
[0005] Furthermore, in the aforementioned vacuum insulated cryogenic pressure vessel, the reinforcing liner is a double-layer plate structure.
[0006] Furthermore, in the aforementioned vacuum insulated cryogenic pressure vessel, triangular ribs are welded between the annular enclosure and the reinforcing ribs on the inner wall of the outer cylinder for reinforcement.
[0007] Furthermore, in the aforementioned vacuum insulated cryogenic pressure vessel, a plurality of reinforcing ribs spaced apart in front and back are welded in the annular enclosure outside the outer load-bearing plate.
[0008] Furthermore, in the aforementioned vacuum insulated cryogenic pressure vessel, a through hole is provided in the middle of the metal support block.
[0009] The advantages of the present invention are as follows: the vacuum insulated cryogenic pressure vessel adopts a stable annular enclosure, an inner load-bearing plate, and an outer load-bearing plate to support the metal support plate, so that the support mechanism has good bearing capacity, high support reliability, small installation volume, and can withstand both tensile stress and compressive stress, thereby reducing the support points of the inner cylinder and reducing heat leakage. Due to the small installation volume, the outer cylinder does not need to protrude outward for avoidance, so that the surface of the outer cylinder can be continuous and beautiful. In addition, the outer insulation pad, the inner insulation pad, and the insulation ring are used to isolate heat conduction, so that the pressure vessel has the advantage of low heat leakage. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is a schematic structural diagram of the vacuum insulated cryogenic pressure vessel of the present invention.
[0011] Figure 2 for Figure 1 Schematic diagram of the structure of the AA section.
[0012] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at point B in the middle.
[0013] Figure 4 for Figure 3 Schematic diagram of the fixed support structure in the CC section.
[0014] Figure 5 for Figure 3 Schematic diagram of the sliding support structure with CC section view. DETAILED DESCRIPTION
[0015] The present invention will be described in further detail below 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 comprises: an outer cylinder 2 and an inner cylinder 1, the inner cylinder 1 is fixed in the outer cylinder 2 by a supporting mechanism, a vacuum interlayer is provided between the inner cylinder 1 and the outer cylinder 2, the supporting mechanism comprises: two fixed supporting structures 18 and two sliding supporting structures 19, the two fixed supporting structures 18 are installed on the left and right sides of the front bottom of the vacuum interlayer, and the two sliding supporting structures 19 are installed on the left and right sides of the rear bottom of the vacuum interlayer, each supporting structure comprises: a reinforcing liner 3, a metal support block 4, a metal support plate 5, a fastening screw 6, an annular enclosure 7, an inner bearing plate 8, an outer bearing plate 9, an outer insulation The backing plate 10, the inner insulation backing plate 11, the insulation ring 12, the inner side of the reinforcement lining plate 3 is welded to the outer side wall of the inner cylinder 1, the inner end of the metal support block 4 is welded to the outer side of the reinforcement lining plate 3, the fastening screw 6 passes through the metal support plate 5 and is screwed into the metal support block 4 to fix the metal support plate 5 on the outer end of the metal support block 4, the annular enclosure 7 is sleeved on the outer side of the metal support plate 5 and welded to the reinforcement rib 13 on the inner side wall of the outer cylinder 2, the inner bearing plate 8 is welded to the inner end of the annular enclosure 7, the outer bearing plate 9 is welded to the outer port of the annular enclosure 7, the metal support plate 5 is located between the inner bearing plate 8 and the outer bearing plate 9, the inner insulation backing plate 11 The metal support plate 5 is padded between the metal support plate 5 and the inner load-bearing plate 8, and the inner load-bearing plate 8 supports the metal support plate 5 through the inner insulation pad 11. The outer insulation pad 10 is padded 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 insulation pad 10. The insulation ring 12 is set between the metal support plate 5 and the annular enclosure 7. The left and right sides of the metal support plate 5 are respectively against the insulation ring 12, so that the inner cylinder 1 can be positioned in the circumferential direction. Through holes are provided on the inner load-bearing plate 8 and the inner insulation pad 11 to avoid the metal support block 4, and through holes are also provided on the outer load-bearing plate 9 and the outer insulation pad 10 to fasten The screw 6 is avoided; in the fixed support structure 18: the metal support plate 5 is in abutment with the insulation ring 12 in four directions of 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 axial thermal expansion and contraction of the inner cylinder 1 by sliding back and forth; mounting holes 20 are provided on the side walls of the outer cylinder 2 on the outside of each support structure, and each mounting hole 20 is welded and sealed by a cover plate 21.
[0017] In this embodiment, for enhanced strength, the reinforcing liner 3 is a double-layer structure. Triangular ribs 14 are welded between the annular enclosure 7 and the reinforcing ribs 13 on the inner wall of the outer cylinder 2 for reinforcement. Three reinforcing ribs 15 are welded to the annular enclosure 7 outside the outer bearing plate 9, spaced apart in a front-to-back arrangement. A through hole 16 is provided in the center of the metal support block 4 to facilitate welding and reduce weight. For ease of installation, the inner insulation pad 11 and insulation ring 12 can be integrally formed, and the annular enclosure 7 can be welded from multiple long plates.
[0018] During production, the reinforcement lining 3 is first welded to the inner cylinder 1 through the mounting hole 20, and then the inner end of the metal support block 4 is welded to the outer end of the reinforcement lining 3, and then the inner load-bearing plate 8 is welded to the inner end of the annular enclosure 7, and then the annular enclosure 7 is looped around the outside of the metal support block 4 and welded to the reinforcement ribs 13 on the inner wall of the outer cylinder 2, and then the inner insulation pad 11 and the insulation ring 12 are installed in place, and then the metal support plate 5 is screwed into the metal support block 4 by tightening the screws 6 to fix the metal support plate 5 on the outer end of the metal support block 4, and then the outer insulation pad 10 is installed in place, and then the outer load-bearing plate 9 is welded to the outer port of the annular enclosure 7, and then the various reinforcement ribs 15 are welded, and finally the cover plate 21 is welded to close the mounting hole 20.
Claims
1. A vacuum insulated cryogenic pressure vessel, comprising: The outer cylinder and the inner cylinder are fixed in the outer cylinder by a supporting mechanism, and a vacuum interlayer is arranged between the inner cylinder and the outer cylinder, which is characterized in that the supporting mechanism includes: two fixed supporting structures and two sliding supporting structures, the two fixed supporting structures are installed on the left and right sides of the front bottom of the vacuum interlayer, and the two sliding supporting structures are installed on the left and right sides of the rear bottom of the vacuum interlayer, and each supporting structure includes: a reinforcing liner, a metal supporting block, a metal supporting plate, a fastening screw, an annular plate, an inner bearing plate, an outer bearing plate, an outer insulation pad, an inner The inner side of the insulation pad, insulation ring and reinforcement lining are welded to the outer side wall of the inner cylinder, the inner end of the metal support block is welded to the outer side of the reinforcement lining, 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 enclosure is sleeved on the outer side of the metal support plate and welded to the reinforcement ribs on the inner side wall of the outer cylinder, the inner bearing plate is welded to the inner end of the annular enclosure, the outer bearing plate is welded to the outer port of the annular enclosure, the metal support plate is located between the inner and outer bearing plates, and the inner insulation pad is padded on the metal The inner bearing plate is between the support plate and the inner load-bearing plate, the inner load-bearing plate supports the metal support plate through the inner insulation pad, the outer insulation pad is padded between the metal support plate and the outer load-bearing plate, the outer load-bearing plate supports the metal support plate through the outer insulation pad, the insulation ring is set between the metal support plate and the annular enclosure, the left and right sides of the metal support plate are respectively against the insulation ring, so that the inner cylinder can be positioned in the circumferential direction, the inner bearing plate and the inner insulation pad are provided with through holes to avoid the metal support block, the outer bearing plate and the outer insulation pad are also provided with through holes for fastening screws to avoid; in the fixed support structure: the metal support plate is in abutment with the insulation ring in four directions of front, back, left and right; in the sliding support structure: in the front and back directions of the metal support plate, there is a sliding gap between the metal support plate and the insulation ring, 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, so that the metal support plate can compensate for the axial thermal expansion and contraction of the inner cylinder by sliding back and forth; mounting holes are opened on the side walls of the outer cylinder outside each support structure, and each mounting hole is welded and sealed by a cover plate.
2. The vacuum insulated cryogenic pressure vessel according to claim 1, characterized in that: The reinforced lining is a double-layer plate structure.
3. A vacuum insulated cryogenic pressure vessel according to claim 1 or 2, characterized in that: Triangular ribs are welded between the annular enclosure and the reinforcing ribs on the inner wall of the outer cylinder for reinforcement.
4. A vacuum insulated cryogenic pressure vessel according to claim 1 or 2, characterized in that: A plurality of reinforcing ribs arranged at intervals in front and back are welded in the annular enclosure outside the outer load-bearing plate.
5. A vacuum insulated cryogenic pressure vessel according to claim 1 or 2, characterized in that: A via is provided in the middle of the metal support block.