CN219933394U - Double-wall pipe joint in pressure vessel - Google Patents
Double-wall pipe joint in pressure vessel Download PDFInfo
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- CN219933394U CN219933394U CN202320362072.5U CN202320362072U CN219933394U CN 219933394 U CN219933394 U CN 219933394U CN 202320362072 U CN202320362072 U CN 202320362072U CN 219933394 U CN219933394 U CN 219933394U
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- ring
- air passing
- connecting pipe
- passing groove
- wall
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- 238000009413 insulation Methods 0.000 claims description 33
- 239000011152 fibreglass Substances 0.000 claims description 2
- 239000011229 interlayer Substances 0.000 abstract description 8
- 239000007789 gas Substances 0.000 description 17
- 239000012071 phase Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
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- Thermal Insulation (AREA)
Abstract
The utility model discloses a double-wall pipe joint in a pressure vessel, comprising: the inner connecting pipe and the outer connecting pipe are penetrated and arranged in the outer connecting pipe, an upper annular edge is arranged on the inner wall of the outer connecting pipe, an upper annular gap is reserved between the upper annular edge and the inner connecting pipe, a fixed ring is welded in the lower pipe orifice of the outer connecting pipe, a lower annular edge is arranged on the outer wall of the inner connecting pipe, a lower annular gap is reserved between the lower annular edge and the outer connecting pipe, an upper heat-insulating ring is arranged between the upper annular edge and the lower annular edge, a lower heat-insulating ring is arranged between the lower annular edge and the fixed ring, the upper heat-insulating ring and the lower heat-insulating ring are sleeved on the inner connecting pipe, an upper air passing groove is formed in the upper end face of the upper heat-insulating ring, a first side air passing groove is formed in the outer ring side wall of the upper heat-insulating ring, a lower air passing groove is formed in the lower end face of the lower heat-insulating ring, and a second side air passing groove is formed in the outer ring side wall of the lower heat-insulating ring. The double-walled pipe joint has excellent heat insulating properties and enables the cavity in the double-walled gas-phase pipe to be evacuated together with the interlayer.
Description
Technical Field
The utility model relates to the field of vacuum deep-cold pressure containers, in particular to a double-wall pipe joint in a pressure container.
Background
The vacuum cryogenic pressure container is generally composed of an outer cylinder body and an inner cylinder body positioned in the outer cylinder body, an interlayer between the inner cylinder body and the outer cylinder body is vacuumized and insulated, the inner cylinder body stores low-temperature liquid such as liquid hydrogen, LNG and the like, the inner cylinder body is supported and fixed in the outer cylinder body through a supporting structure, a gas phase pipe for discharging gas in the inner cylinder body to reduce the air pressure in the inner cylinder body is arranged in the inner cylinder body, the existing double-wall gas phase pipe is composed of an outer pipe and an inner pipe, the inner pipe is positioned in the outer pipe, a cavity between the outer pipe and the inner pipe needs vacuumized and insulated, the vacuum cavity between the outer pipe, the outer pipe and the inner pipe can play a good role of blocking cold energy, the cold energy of a low-temperature liquid phase in the inner cylinder body is not easy to be conducted onto the inner pipe, therefore the gas in the pipe can be effectively prevented from liquefying when passing through the liquid phase, the upper port of the double-wall gas phase pipe is positioned at the top of the inner cylinder body and is used for being communicated with the gas phase in the inner cylinder body, the double-wall gas phase pipe passes through the liquid phase of the low-temperature liquid stored in the inner cylinder body, and a double-wall joint is needed for leading the double-wall pipe to be in the opposite to the bottom of the inner cylinder body.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: the double-wall pipe joint in the pressure container has good heat insulation performance, can enable the double-wall gas-phase pipe in the inner cylinder body to be in butt joint with the eduction pipe outside the inner cylinder body, can enable gas in the inner cylinder body to be discharged, and can enable an interlayer between the inner cylinder body and the outer cylinder body to be communicated with a cavity in the double-wall gas-phase pipe, so that the cavity can be vacuumized along with the interlayer.
In order to solve the problems, the utility model adopts the following technical scheme: double-wall pipe joint in the pressure vessel, its characterized in that: comprising the following steps: the inner connecting pipe and the outer connecting pipe are penetrated in the outer connecting pipe, a ring-shaped edge is arranged on the inner wall of the outer connecting pipe, an upper annular gap is reserved between the upper annular edge and the outer wall of the inner connecting pipe, a fixed ring is welded in the lower pipe orifice of the outer connecting pipe, a ring-shaped lower annular edge is arranged on the outer wall of the inner connecting pipe, a lower annular gap is reserved between the lower annular edge and the inner wall of the outer connecting pipe, the lower annular edge is positioned below the upper annular edge, the fixed ring is positioned below the lower annular edge, an upper heat insulation ring is arranged between the upper annular edge and the lower annular edge, a lower heat insulation ring is arranged between the lower annular edge and the fixed ring, the upper heat insulation ring and the lower heat insulation ring are sleeved on the inner connecting pipe, the outer ring side walls of the upper heat insulation ring and the lower heat insulation ring are propped against the inner wall of the outer connecting pipe respectively, the inner ring side walls of the upper heat-insulating ring and the lower heat-insulating ring are respectively propped against the outer wall of the inner connecting pipe, the upper heat-insulating ring is clamped between the upper annular edge and the lower annular edge, the lower heat-insulating ring is clamped between the lower annular edge and the fixed ring, an upper air passing groove is formed in the upper end face of the upper heat-insulating ring, a first side air passing groove communicated with the upper air passing groove is formed in the outer ring side wall of the upper heat-insulating ring, the upper annular gap can be communicated with the lower annular gap through the upper air passing groove and the first side air passing groove, a lower air passing groove is formed in the lower end face of the lower heat-insulating ring, a second side air passing groove communicated with the lower air passing groove is formed in the outer ring side wall of the lower heat-insulating ring, and a lower pipe orifice of the outer connecting pipe can be communicated with the lower annular gap through the lower air passing groove and the second side air passing groove.
Further, the double-wall pipe joint in the pressure vessel, wherein: the upper and lower insulating rings are identical in structure, and both of them include: the ring body is provided with an upper air passing groove on the upper end face of the ring body, a lower air passing groove is arranged on the lower end face of the ring body, a first side air passing groove and a second side air passing groove are arranged on the outer ring side wall of the ring body, the first side air passing groove is communicated with the upper air passing groove, and the second side air passing groove is communicated with the lower air passing groove.
Further, the double-wall pipe joint in the pressure vessel, wherein: the upper air passing grooves are arranged on the left side and the right side of the ring body respectively, the lower air passing grooves are arranged on the front side and the rear side of the ring body respectively, the first side air passing grooves and the second side air passing grooves are both arranged two, the two upper air passing grooves and the two first side air passing grooves are respectively communicated one to one, and the two lower air passing grooves and the two second side air passing grooves are respectively communicated one to one.
Further, the double-wall pipe joint in the pressure vessel, wherein: the upper pipe orifice of the outer connecting pipe is provided with a countersink, and the upper pipe orifice and the lower pipe orifice of the inner connecting pipe are both provided with countersinks.
Further, the double-wall pipe joint in the pressure vessel, wherein: the upper heat insulation ring and the lower heat insulation ring are glass fiber reinforced plastic rings.
The utility model has the advantages that: the inner connecting pipe and the outer connecting pipe are not contacted due to the obstruction of the upper heat insulating ring and the lower heat insulating ring, so that the double-wall pipe joint has excellent heat insulating performance; in addition, the interlayer between the inner cylinder and the outer cylinder can be communicated with the cavity of the double-wall gas-phase pipe through the lower pipe orifice, the lower gas passing groove, the second side gas passing groove, the lower annular gap, the first side gas passing groove, the upper annular gap and the upper pipe orifice of the external pipe, so that the cavity in the double-wall gas-phase pipe can be vacuumized along with the interlayer.
Drawings
Fig. 1 is a schematic view of a double-wall pipe joint in a pressure vessel according to the present utility model.
Fig. 2 is a schematic structural view of the upper and lower heat insulating rings.
Fig. 3 is a schematic bottom view of fig. 2.
Fig. 4 is a view showing a state of use of the double-wall pipe joint in the pressure vessel according to the present utility model.
Detailed Description
The utility model is described in further detail below with reference to specific embodiments and the accompanying drawings.
As shown in fig. 1, 2, 3 and 4, a double-walled pipe joint in a pressure vessel, comprising: the inner connecting pipe 1 and the outer connecting pipe 2 are arranged in the outer connecting pipe 2 in a penetrating way, a ring-shaped edge 4 is arranged on the inner wall of the outer connecting pipe 2, an upper annular gap 5 is reserved between the upper ring-shaped edge 4 and the outer wall of the inner connecting pipe 1, a fixed ring 6 is welded in the lower pipe orifice of the outer connecting pipe 2, a ring-shaped lower annular edge 7 is arranged on the outer wall of the inner connecting pipe 1, a lower annular gap 8 is reserved between the lower annular edge 7 and the inner wall of the outer connecting pipe 2, the lower annular edge 7 is positioned below the upper ring-shaped edge 4, the fixed ring 6 is positioned below the lower annular edge 7, an upper heat-insulating ring 9 is arranged between the upper annular edge 4 and the lower annular edge 7, a lower heat-insulating ring 10 is arranged between the lower annular edge 7 and the fixed ring 6, the upper heat-insulating ring 9 and the lower heat-insulating ring 10 are sleeved on the inner connecting pipe 1, the outer ring side walls of the upper heat-insulating ring 9 and the lower heat-insulating ring 10 are respectively abutted against the inner wall of the outer connecting pipe 2, the inner ring side walls of the upper heat insulation ring 9 and the lower heat insulation ring 10 are respectively abutted against the outer wall of the inner joint pipe 1, the upper heat insulation ring 9 is clamped between the upper annular edge 4 and the lower annular edge 7, the lower heat insulation ring 10 is clamped between the lower annular edge 7 and the fixed ring 6, an upper air passing groove 11 is arranged on the upper end face of the upper heat insulation ring 9, a first side air passing groove 12 communicated with the upper air passing groove 11 is arranged on the outer ring side wall of the upper heat insulation ring 9, the upper annular gap 5 can be communicated with the lower annular gap 8 through the upper air passing groove 11 and the first side air passing groove 12, a lower air passing groove 13 is arranged on the lower end face of the lower heat insulation ring 10, a second side air passing groove 14 communicated with the lower air passing groove 13 is arranged on the outer ring side wall of the lower heat insulation ring 10, and the lower pipe mouth of the outer joint pipe 2 can be communicated with the lower annular gap 8 through the lower air passing groove 13 and the second side air passing groove 14.
In the present embodiment, the upper heat insulating ring 9 and the lower heat insulating ring 10 have the same structure, and each of them includes: the ring body 20, the upper end face of the ring body 20 is provided with an upper air passing groove 11, the lower end face of the ring body 20 is provided with a lower air passing groove 13, the outer ring side wall of the ring body 20 is provided with a first side air passing groove 12 and a second side air passing groove 14, the first side air passing groove 12 is communicated with the upper air passing groove 11, and the second side air passing groove 14 is communicated with the lower air passing groove 13. The upper air passing grooves 11 are provided in two and are respectively arranged on the left and right sides of the ring body 20, the lower air passing grooves 13 are provided in two and are respectively arranged on the front and rear sides of the ring body 20, the first side air passing grooves 12 and the second side air passing grooves 14 are respectively provided in two, the two upper air passing grooves 11 and the two first side air passing grooves 12 are respectively communicated one to one, and the two lower air passing grooves 13 and the two second side air passing grooves 14 are respectively communicated one to one. The upper heat insulating ring 9 and the lower heat insulating ring 10 do not need to be distinguished when being installed after being arranged, so that the upper heat insulating ring 9 and the lower heat insulating ring 10 can be installed more conveniently.
In the embodiment, the upper pipe orifice of the outer connecting pipe 2 is provided with a countersink, the upper pipe orifice and the lower pipe orifice of the inner connecting pipe 1 are both provided with countersinks, and the pipe can be welded better after being inserted into the countersink. For better insulation, the upper 9 and lower 10 insulating rings are glass fibre reinforced plastic rings.
When the joint is assembled, the outer connecting tube 2 is arranged on the bottom of the inner tube body 3 in a penetrating manner and is welded and fixed with the inner tube body 3, then the upper heat insulation ring 9 is sleeved on the inner connecting tube 1, then the inner connecting tube 1 is arranged in the outer connecting tube 2 in a penetrating manner from bottom to top, the upper heat insulation ring 9 is clamped between the upper annular edge 4 and the lower annular edge 7, then the inner tube 16 of the double-wall gas-phase tube 18 in the inner tube body 3 is inserted into a counter-sunk hole on the upper tube opening of the inner connecting tube 1, the inner tube 16 and the inner connecting tube 1 are welded and fixed, then the lower heat insulation ring 10 is sleeved on the inner connecting tube 1, then the fixed ring 6 is placed in the lower tube opening of the outer connecting tube 2, and the lower heat insulation ring 10 is clamped between the lower annular edge 7 and the fixed ring 6, then the fixed ring 6 is welded and fixed in the lower tube opening of the outer connecting tube 2, then the upper end of the leading-out tube 17 is inserted into a counter-sunk hole on the lower tube opening of the inner connecting tube 1, the inner connecting tube 1 and the leading-out tube 17 are welded and fixed, and then the gas phase in the inner tube 3 can be discharged outwards through the inner tube 16, the inner tube 1 and the leading-out tube 17.
When the double-wall pipe joint works, the inner pipe 1 and the outer pipe 2 are not contacted due to the obstruction of the upper heat insulation ring 9 and the lower heat insulation ring 10, so that the double-wall pipe joint has excellent heat insulation performance; in addition, the interlayer between the inner cylinder and the outer cylinder can be communicated with the cavity of the double-wall gas phase pipe through the lower pipe orifice of the outer connecting pipe 2, the lower gas passing groove 13, the second side gas passing groove 14, the lower annular gap 8, the first side gas passing groove 12, the upper gas passing groove 11, the upper annular gap 5 and the upper pipe orifice of the outer connecting pipe 2, so that the cavity can be vacuumized together with the interlayer.
Claims (5)
1. Double-wall pipe joint in the pressure vessel, its characterized in that: comprising the following steps: the inner connecting pipe and the outer connecting pipe are penetrated in the outer connecting pipe, a ring-shaped edge is arranged on the inner wall of the outer connecting pipe, an upper annular gap is reserved between the upper annular edge and the outer wall of the inner connecting pipe, a fixed ring is welded in the lower pipe orifice of the outer connecting pipe, a ring-shaped lower annular edge is arranged on the outer wall of the inner connecting pipe, a lower annular gap is reserved between the lower annular edge and the inner wall of the outer connecting pipe, the lower annular edge is positioned below the upper annular edge, the fixed ring is positioned below the lower annular edge, an upper heat insulation ring is arranged between the upper annular edge and the lower annular edge, a lower heat insulation ring is arranged between the lower annular edge and the fixed ring, the upper heat insulation ring and the lower heat insulation ring are sleeved on the inner connecting pipe, the outer ring side walls of the upper heat insulation ring and the lower heat insulation ring are propped against the inner wall of the outer connecting pipe respectively, the inner ring side walls of the upper heat-insulating ring and the lower heat-insulating ring are respectively propped against the outer wall of the inner connecting pipe, the upper heat-insulating ring is clamped between the upper annular edge and the lower annular edge, the lower heat-insulating ring is clamped between the lower annular edge and the fixed ring, an upper air passing groove is formed in the upper end face of the upper heat-insulating ring, a first side air passing groove communicated with the upper air passing groove is formed in the outer ring side wall of the upper heat-insulating ring, the upper annular gap can be communicated with the lower annular gap through the upper air passing groove and the first side air passing groove, a lower air passing groove is formed in the lower end face of the lower heat-insulating ring, a second side air passing groove communicated with the lower air passing groove is formed in the outer ring side wall of the lower heat-insulating ring, and a lower pipe orifice of the outer connecting pipe can be communicated with the lower annular gap through the lower air passing groove and the second side air passing groove.
2. A double wall pipe joint in a pressure vessel according to claim 1, wherein: the upper and lower insulating rings are identical in structure, and both of them include: the ring body is provided with an upper air passing groove on the upper end face of the ring body, a lower air passing groove is arranged on the lower end face of the ring body, a first side air passing groove and a second side air passing groove are arranged on the outer ring side wall of the ring body, the first side air passing groove is communicated with the upper air passing groove, and the second side air passing groove is communicated with the lower air passing groove.
3. A double-walled pipe joint in a pressure vessel according to claim 2 wherein: the upper air passing grooves are arranged on the left side and the right side of the ring body respectively, the lower air passing grooves are arranged on the front side and the rear side of the ring body respectively, the first side air passing grooves and the second side air passing grooves are both arranged two, the two upper air passing grooves and the two first side air passing grooves are respectively communicated one to one, and the two lower air passing grooves and the two second side air passing grooves are respectively communicated one to one.
4. A double wall pipe joint in a pressure vessel according to claim 1 or 2 or 3, characterized in that: the upper pipe orifice of the outer connecting pipe is provided with a countersink, and the upper pipe orifice and the lower pipe orifice of the inner connecting pipe are both provided with countersinks.
5. A double wall pipe joint in a pressure vessel according to claim 1 or 2 or 3, characterized in that: the upper heat insulation ring and the lower heat insulation ring are glass fiber reinforced plastic rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320362072.5U CN219933394U (en) | 2023-03-02 | 2023-03-02 | Double-wall pipe joint in pressure vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320362072.5U CN219933394U (en) | 2023-03-02 | 2023-03-02 | Double-wall pipe joint in pressure vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219933394U true CN219933394U (en) | 2023-10-31 |
Family
ID=88494366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320362072.5U Active CN219933394U (en) | 2023-03-02 | 2023-03-02 | Double-wall pipe joint in pressure vessel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219933394U (en) |
-
2023
- 2023-03-02 CN CN202320362072.5U patent/CN219933394U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |