A low heat leakage labyrinth glass fiber reinforced plastic support structure

Abstract

The present invention discloses a low-heat-leakage labyrinth glass fiber reinforced plastic support structure, comprising: a first, a second, and a third branch pipe and a support, wherein the first branch pipe is passed through an outer cylinder, and its outer port is sealed by a first sealing plate, the second branch pipe is passed through the first sealing plate, and its outer port is sealed by a second sealing plate, the outer port of the third branch pipe is sealed by a third sealing plate, the inner port of the second branch pipe is fixed to the third sealing plate, a circular ring plate is welded to the inner port of the third branch pipe, a cover plate is provided in the third branch pipe, the cover plate is sealed on the circular ring plate, a glass fiber reinforced plastic circular ring is clamped in the inner circle hole of the circular ring plate, a clamping ring is welded on the outer end surface of the circular ring plate, the support is welded and fixed to the outer wall of the inner cylinder, a groove with a glass fiber reinforced plastic pad is provided on the support, a clamping ring is welded on the end surface of the support, and a glass fiber reinforced plastic branch pipe is also provided, one end of the glass fiber reinforced plastic branch pipe is inserted into the inner circle hole of the glass fiber reinforced plastic circular ring, and the other end of the glass fiber reinforced plastic branch pipe is against the glass fiber reinforced plastic pad. The above-mentioned support structure can effectively reduce the heat transferred from the outside to the inner cylinder through the support structure.

Description

Technical Field

[0001] The invention relates to the field of vacuum insulation containers, and in particular to a low-heat-leakage labyrinth-type glass fiber reinforced plastic support structure. Background Art

[0002] The vacuum insulated container consists of an outer cylinder and an inner cylinder located in the outer cylinder. The interlayer between the inner and outer cylinders is evacuated for insulation. Cryogenic liquids, such as liquid hydrogen, LNG, etc., are stored in the inner cylinder. The inner cylinder is supported and fixed in the outer cylinder by a supporting structure. However, the existing supporting structure between the inner and outer cylinders has a large heat transfer area and a short heat transfer path, which makes it easy for external heat to be transferred to the inner cylinder through the supporting structure, making it easy for the cryogenic liquid in the inner cylinder to vaporize, making it impossible for the vacuum insulated container to stably store cryogenic liquids. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a low-heat-leakage labyrinth-type fiberglass support structure which can prevent external heat from being easily transferred to the inner cylinder.

[0004] In order to solve the above problems, the technical solution adopted by the present invention is: a low heat leakage labyrinth glass fiber reinforced plastic support structure, characterized in that: it includes: a first branch pipe, a second branch pipe, a third branch pipe, and a support. The first branch pipe is penetrated on the outer cylinder body, the outer port of the first branch pipe is located on the outer side of the outer cylinder body and is sealed by a first sealing plate, the inner port of the first branch pipe is located on the inner side of the outer cylinder body, the second branch pipe is penetrated on the first sealing plate, the outer port of the second branch pipe is located on the outer side of the first branch pipe and is sealed by a second sealing plate, the third branch pipe is located in the first branch pipe, the outer port of the third branch pipe is sealed by a third sealing plate, the inner port of the second branch pipe is fixed to the third sealing plate, the inner port of the third branch pipe is welded with a circular ring plate, a cover plate is arranged in the third branch pipe, the cover plate is sealed on the inner circle hole of the circular ring plate and is welded to the inner end face of the circular ring plate, and the inner end of the circular ring plate is welded to the inner ring hole of the circular ring plate. A glass fiber reinforced plastic ring is clamped in the inner circle hole of the ring, and one end face of the glass fiber reinforced plastic ring is against the cover plate. A first clamping ring is welded on the outer end face of the ring plate, and the inner circle of the first clamping ring can prevent the glass fiber reinforced plastic ring from escaping from the inner circle hole of the ring plate. The support is located in the interlayer of the inner and outer cylinders and is arranged opposite to the glass fiber reinforced plastic ring. The support is welded and fixed to the inner cylinder, and a groove is provided on the support. A glass fiber reinforced plastic pad is clamped in the groove, and a second clamping ring is welded on the end face of the support. The inner circle of the second clamping ring can prevent the glass fiber reinforced plastic pad from escaping from the groove. A glass fiber reinforced plastic branch pipe for supporting the inner cylinder in the outer cylinder is provided between the glass fiber reinforced plastic pad and the glass fiber reinforced plastic ring, one end of the glass fiber reinforced plastic branch pipe is inserted into the inner circle hole of the glass fiber reinforced plastic ring and against the cover plate, and the other end of the glass fiber reinforced plastic branch pipe is against the glass fiber reinforced plastic pad.

[0005] Furthermore, the aforementioned low heat leakage labyrinth type FRP support structure, wherein: a first through hole is opened on the tube wall of the second branch pipe, the first through hole is located in the first branch pipe, a second through hole is opened on the third sealing plate or the tube wall of the third branch pipe, and a third through hole is opened on the tube wall of the FRP branch pipe.

[0006] Furthermore, the aforementioned low heat leakage labyrinth fiberglass support structure, wherein: a small head is welded on the inner wall of the inner cylinder, the small head cover is buckled on the back of the support welding place, so that the small head can reinforce the support welding place, a reinforcing tube arranged opposite to the support is passed through the small head, one end of the reinforcing tube is closed, and the other end of the reinforcing tube is welded to the inner wall of the inner cylinder, and a fourth through hole connected to the inner cavity of the small head is opened on the inner cylinder.

[0007] Furthermore, the aforementioned low heat leakage labyrinth type FRP support structure, wherein: a first thermal insulation member is attached to the outer surface of the third branch pipe and the third sealing plate, the first thermal insulation member is not in contact with the first branch pipe and the first sealing plate, a second thermal insulation member is arranged in the third branch pipe, the second thermal insulation member is attached to the cover plate and the circular ring plate, the second thermal insulation member is not in contact with the third sealing plate.

[0008] Furthermore, in the aforementioned low heat leakage labyrinth fiberglass support structure, the first and second thermal insulation components are both layered structures, and each layer of the first and second thermal insulation components is composed of a stacked aluminum foil and a stacked glass fiber paper.

[0009] Furthermore, in the aforementioned low heat leakage labyrinth fiberglass support structure, the first and second thermal insulation components each have 18 to 22 layers, and the thickness of the first and second thermal insulation components is each 0.8 to 1.2 cm.

[0010] Furthermore, the aforementioned low heat leakage labyrinth fiberglass support structure, wherein: a plurality of first reinforcing ribs and a first reinforcing ring arranged around the first branch pipe are welded between the outer wall of the first branch pipe and the outer wall of the outer cylinder, the first reinforcing ring surrounds the first branch pipe and is welded to the outer wall of the outer cylinder, and the two sides of the first reinforcing rib are respectively welded to the outer wall of the first branch pipe and the first reinforcing ring; a plurality of second reinforcing ribs arranged around the second branch pipe are welded between the outer wall of the second branch pipe and the first sealing plate, and the two sides of the second reinforcing rib are respectively welded to the outer wall of the second branch pipe and the first sealing plate; a second reinforcing ring surrounding the support is welded on the outer wall of the inner cylinder.

[0011] The advantages of the present invention are as follows: the low heat leakage labyrinth FRP support structure greatly increases the heat conduction path by arranging various branch pipes and various FRP supports, so that the heat from the outside needs to pass through the second branch pipe, the third sealing plate, the third branch pipe, the circular ring plate, the FRP circular ring, the FRP branch pipe, the FRP pad, and the support in sequence before it can be transferred to the inner cylinder, thereby effectively reducing the heat from the outside that is transferred to the inner cylinder through the support structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic structural diagram of the low heat leakage labyrinth type fiberglass support structure described in the present invention. DETAILED DESCRIPTION

[0013] The present invention is further described in detail below in conjunction with specific embodiments and drawings.

[0014] like Figure 1 As shown, a low heat leakage labyrinth glass fiber reinforced plastic support structure comprises: a first branch pipe 1, a second branch pipe 2, a third branch pipe 3, and a support 4. The first branch pipe 1 is passed through an outer cylinder 9, and an outer port of the first branch pipe 1 is located outside the outer cylinder 9 and is sealed by a first sealing plate 11. An inner port of the first branch pipe 1 is located inside the outer cylinder 9. The second branch pipe 2 is passed through the first sealing plate 11, and an outer port of the second branch pipe 2 is located outside the first branch pipe 1 and is sealed by a second sealing plate 21. The third branch pipe 3 is located in the first branch pipe 1, the outer port of the third branch pipe 3 is sealed by the third sealing plate 31, the inner port of the second branch pipe 2 is fixed to the third sealing plate 31, the inner port of the third branch pipe 3 is welded with a circular plate 32, a cover plate 33 is arranged in the third branch pipe 3, the cover plate 33 is sealed on the inner circle hole of the circular plate 32 and welded to the inner end face of the circular plate 32, a glass fiber reinforced plastic ring 5 is clamped in the inner circle hole of the circular plate 32, and the glass fiber reinforced plastic is heat conductive. The coefficient is very small, which can effectively reduce thermal conductivity. One end face of the FRP ring 5 is against the cover plate 33. A first clamping ring 51 is welded on the outer end face of the ring plate 32. The inner ring of the first clamping ring 51 can prevent the FRP ring 5 from escaping from the inner ring hole of the ring plate 32. The support 4 is located in the interlayer of the inner and outer cylinders 91 and 9 and is arranged opposite to the FRP ring 5. The support 4 is welded and fixed to the inner cylinder 91. A groove is provided on the support 4. A FRP pad 6 is clamped in the groove. A second clamping ring 41 is welded on the end face of the support 4. The inner ring of the second clamping ring 41 can prevent the FRP pad 6 from escaping from the groove. A FRP branch pipe 7 for supporting the inner cylinder 91 in the outer cylinder 9 is provided between the FRP pad 6 and the FRP ring 5. One end of the FRP branch pipe 7 is inserted into the inner ring hole of the FRP ring 5 and abuts against the cover plate 33, and the other end of the FRP branch pipe 7 abuts against the FRP pad 6.

[0015] The above-mentioned low-heat-leakage labyrinth-type FRP support structure greatly increases the heat conduction path by setting various branch pipes and various FRP supports, so that the heat from the outside needs to pass through the second branch pipe 2, the third sealing plate 31, the third branch pipe 3, the circular ring plate 32, the FRP circular ring 5, the FRP branch pipe 7, the FRP pad 6, and the support 4 in sequence before it can be transferred to the inner cylinder 91, thereby effectively reducing the heat from the outside that is transferred to the inner cylinder through the support structure.

[0016] In this embodiment, a first through hole 22 is opened on the wall of the second branch pipe 2, the first through hole 22 is located in the first branch pipe 1, a second through hole 34 is opened on the third sealing plate 31, and a third through hole 71 is opened on the wall of the glass fiber reinforced plastic branch pipe 7.

[0017] A small head 8 is welded on the inner wall of the inner cylinder 91, and the small head 8 is buckled on the back of the welding part of the support 4, so that the small head 8 can reinforce the welding part of the support 4. The small head 8 also serves to isolate the direct contact between the cryogenic liquid and the supporting position. A reinforcing tube 81 arranged opposite to the support 4 is passed through the small head 8, one end of the reinforcing tube 81 is closed, and the other end of the reinforcing tube 81 is welded to the inner wall of the inner cylinder 91, and a fourth through hole 83 connected to the inner cavity of the small head 8 is opened on the inner cylinder 91.

[0018] When the interlayer between the inner and outer cylinders 91 and 9 is evacuated, the inner cavity of the second branch pipe 2, the inner cavity of the third branch pipe 3, the inner cavity of the glass fiber reinforced plastic branch pipe 7, and the inner cavity of the small end cap 8 can be evacuated together through the first through hole 22, the second through hole 34, the third through hole 71, and the fourth through hole 83. This arrangement can better reduce heat transfer.

[0019] A first heat insulating member 92 is attached to the outer surface of the third branch pipe 3 and the third sealing plate 31, and the first heat insulating member 92 does not contact the first branch pipe 1 and the first sealing plate 11. A second heat insulating member 93 is arranged in the third branch pipe 3, and the second heat insulating member 93 is attached to the cover plate 33 and the circular ring plate 32, and the second heat insulating member 93 does not contact the third sealing plate 31. The first and second heat insulating members 92 and 93 are both layered structures, and each layer of the first and second heat insulating members 92 and 93 is composed of a sheet of aluminum foil and a sheet of glass fiber paper stacked together. The first and second heat insulating members 92 and 93 each have 20 layers, and the thickness of the first and second heat insulating members is 1 cm. The first heat insulating member 92 is used to isolate heat radiation to prevent heat radiation from radiating to the third branch pipe 3 and the third sealing plate 31, and the second heat insulating member 93 is used to isolate heat radiation to prevent heat radiation from radiating to the cover plate 33 and the circular ring plate 32.

[0020] Eight first reinforcing ribs 95 and a first reinforcing ring 94 evenly arranged around the first branch pipe 1 are welded between the outer wall of the first branch pipe 1 and the outer wall of the outer cylinder 9. The first reinforcing ring 94 surrounds the first branch pipe 1 and is welded to the outer wall of the outer cylinder 9. Both sides of the first reinforcing rib 95 are respectively welded to the outer wall of the first branch pipe 1 and the first reinforcing ring 94; eight second reinforcing ribs 96 evenly arranged around the second branch pipe 2 are welded between the outer wall of the second branch pipe 2 and the first sealing plate 11, and both sides of the second reinforcing rib 96 are respectively welded to the outer wall of the second branch pipe 2 and the first sealing plate 11; a second reinforcing ring 97 surrounding the support 4 is welded on the outer wall of the inner cylinder 91.

Claims

1. A low heat leakage labyrinth fiberglass support structure, characterized in that: include: The first branch pipe, the second branch pipe, the third branch pipe, and the support, the first branch pipe is penetrated on the outer cylinder body, the outer port of the first branch pipe is located on the outer side of the outer cylinder body and is sealed by the first sealing plate, the inner port of the first branch pipe is located on the inner side of the outer cylinder body, the second branch pipe is penetrated on the first sealing plate, the outer port of the second branch pipe is located on the outer side of the first branch pipe and is sealed by the second sealing plate, the third branch pipe is located in the first branch pipe, the outer port of the third branch pipe is sealed by the third sealing plate, the inner port of the second branch pipe is fixed to the third sealing plate, the inner port of the third branch pipe is welded with a circular ring plate, a cover plate is arranged in the third branch pipe, the cover plate is sealed on the inner circle hole of the circular ring plate and is welded to the inner end face of the circular ring plate, a glass fiber reinforced plastic ring is clamped in the inner circle hole of the circular ring plate, one end of the glass fiber reinforced plastic ring An end face of the annular plate is abutted against the cover plate, a first clamping ring is welded on the outer end face of the annular plate, the inner ring of the first clamping ring can prevent the FRP annular ring from escaping from the inner ring hole of the annular plate, the support is located in the interlayer of the inner and outer cylinders and is arranged opposite to the FRP annular plate, the support is welded and fixed to the inner cylinder, a groove is provided on the support, a FRP pad is clamped in the groove, a second clamping ring is welded on the end face of the support, the inner ring of the second clamping ring can prevent the FRP pad from escaping from the groove, a FRP branch pipe for supporting the inner cylinder in the outer cylinder is provided between the FRP pad and the FRP annular plate, one end of the FRP branch pipe is inserted into the inner ring hole of the FRP annular plate and abuts against the cover plate, and the other end of the FRP branch pipe abuts against the FRP pad.

2. The low heat leakage labyrinth fiberglass support structure according to claim 1, characterized in that: A first through hole is opened on the wall of the second branch pipe, the first through hole is located in the first branch pipe, a second through hole is opened on the third sealing plate or the wall of the third branch pipe, and a third through hole is opened on the wall of the glass fiber reinforced plastic branch pipe.

3. A low heat leakage labyrinth type fiberglass support structure according to claim 1 or 2, characterized in that: A small head is welded on the inner wall of the inner cylinder, and the small head cover is buckled on the back of the support welding place, so that the small head can reinforce the support welding place. A reinforcement tube arranged opposite to the support is passed through the small head, one end of the reinforcement tube is closed, and the other end of the reinforcement tube is welded to the inner wall of the inner cylinder. A fourth through hole connected with the inner cavity of the small head is opened on the inner cylinder.

4. A low heat leakage labyrinth fiberglass support structure according to claim 1 or 2, characterized in that: A first thermal insulation member is attached to the outer surface of the third branch pipe and the third sealing plate, and the first thermal insulation member does not contact the first branch pipe and the first sealing plate. A second thermal insulation member is arranged in the third branch pipe, and the second thermal insulation member is attached to the cover plate and the circular ring plate, and the second thermal insulation member does not contact the third sealing plate.

5. The low heat leakage labyrinth type fiberglass support structure according to claim 4, characterized in that: The first and second heat insulating members are both layered structures, and each layer of the first and second heat insulating members is composed of a stacked piece of aluminum foil paper and a stacked piece of glass fiber paper.

6. The low heat leakage labyrinth type fiberglass support structure according to claim 5, characterized in that: The first and second thermal insulation components both have 18 to 22 layers, and the thickness of the first and second thermal insulation components both are 0.8 to 1.2 cm.

7. A low heat leakage labyrinth type fiberglass support structure according to claim 1 or 2, characterized in that: Several first reinforcing ribs and a first reinforcing ring arranged around the first branch pipe are welded between the outer wall of the first branch pipe and the outer wall of the outer cylinder body. The first reinforcing ring surrounds the first branch pipe and is welded to the outer wall of the outer cylinder body. Both sides of the first reinforcing rib are respectively welded to the outer wall of the first branch pipe and the first reinforcing ring; several second reinforcing ribs arranged around the second branch pipe are welded between the outer wall of the second branch pipe and the first sealing plate. Both sides of the second reinforcing rib are respectively welded to the outer wall of the second branch pipe and the first sealing plate; a second reinforcing ring surrounding the support is welded on the outer wall of the inner cylinder body.

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