CN116734051A - Liquid hydrogen vacuum double-wall pipe with full-caliber welding-free elastic compensation structure - Google Patents
Liquid hydrogen vacuum double-wall pipe with full-caliber welding-free elastic compensation structure Download PDFInfo
- Publication number
- CN116734051A CN116734051A CN202310754062.0A CN202310754062A CN116734051A CN 116734051 A CN116734051 A CN 116734051A CN 202310754062 A CN202310754062 A CN 202310754062A CN 116734051 A CN116734051 A CN 116734051A
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- CN
- China
- Prior art keywords
- pipe
- elastic compensation
- wall
- liquid hydrogen
- full
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 47
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 239000001257 hydrogen Substances 0.000 title claims abstract description 46
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 46
- 238000013016 damping Methods 0.000 claims abstract description 45
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 33
- 239000010959 steel Substances 0.000 claims abstract description 33
- 238000002955 isolation Methods 0.000 claims description 9
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 230000035939 shock Effects 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims 2
- 238000003466 welding Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 5
- 230000003139 buffering effect Effects 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000003949 liquefied natural gas Substances 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/20—Double-walled hoses, i.e. two concentric hoses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a liquid hydrogen vacuum double-wall pipe with a full-caliber welding-free elastic compensation structure, which comprises an inner pipe and an outer pipe, wherein a plurality of detachable elastic compensation components are arranged between the inner pipe and the outer pipe, each elastic compensation component sequentially comprises an annular inner lining ring sleeve, an annular steel sleeve, an annular positioning ring sleeve and a pair of damping sleeves from inside to outside, and the inner lining ring sleeve, the steel sleeve and the positioning ring sleeve are completely wrapped by the damping sleeves. By utilizing the elastic compensation component, an effective support is formed between the inner pipe and the outer pipe, the damping and buffering effects are good, and the device is particularly suitable for the pipeline transportation of liquid hydrogen. In addition, the elastic compensation component adopts a welding spot-free structure, so that the installation is easy and the assembly is convenient.
Description
Technical Field
The invention relates to a pipeline, in particular to a liquid hydrogen vacuum double-wall pipe with a full-caliber welding-free elastic compensation structure.
Background
In the delivery of liquid hydrogen fluids, double tubes, i.e., inner and outer tubes, are typically employed. A plurality of rigid support structures are generally arranged between the inner tube and the outer tube, and the rigid support structures are connected with the inner tube or the outer tube in a welding mode, so that a complex welding operation is required in the manufacturing process.
For example, a double-wall pipe is matched in a pneumatic dual-fuel special stainless steel chemical ship, and combustible gases such as ammonia gas, hydrogen gas and the like are conveyed to a gas generator set by the double-wall pipe. According to the standard requirements of IMO and class society, the double-wall pipe adopts a double-layer pipe wall design form so as to radically eliminate leakage caused by defects such as pipeline welding and the like and the fire explosion risk caused by the leakage. The inner pipeline is used for gas transportation, and a fan is matched in a cavity between the inner pipeline and the outer pipeline. Thus, when the inner pipeline is damaged, leaked fuel gas is pumped out to an open-air safety area by the exhaust fan in time.
Disclosure of Invention
Based on the above, it is necessary to provide a liquid hydrogen vacuum double-wall pipe with a full-caliber welding-free elastic compensation structure.
In order to solve the technical problems, the invention adopts the following technical scheme:
the liquid hydrogen vacuum double-wall pipe with the full-caliber welding-free elastic compensation structure is characterized by comprising an inner pipe and an outer pipe, wherein a plurality of detachable elastic compensation components are arranged between the inner pipe and the outer pipe, each elastic compensation component sequentially comprises an annular lining ring sleeve, an annular steel sleeve, an annular positioning ring sleeve and a plurality of damping sleeves from inside to outside, and the lining ring sleeve, the steel sleeve and the positioning ring sleeve are completely wrapped by the damping sleeves.
As a preferred embodiment of the invention, a plurality of positioning screw holes are arranged on the side wall of the positioning ring sleeve, positioning screws are arranged in the positioning screw holes, and the positioning screws tightly prop against the outer wall of the steel sleeve.
As a preferred embodiment of the invention, the inner lining ring sleeve is made of polytetrafluoroethylene.
As a preferred embodiment of the invention, the damping sleeve comprises an arc-shaped damping main body, an arc-shaped wrapping arc groove is formed in the inner wall of the damping main body, and a plurality of vent holes are formed in the outer wall of the damping main body.
As a preferred embodiment of the invention, the damping sleeve is made of elastic rubber.
As a preferred embodiment of the invention, the side wall of the inner lining ring is provided with an inner lining ring opening.
As a preferred embodiment of the invention, a steel sleeve opening is arranged on the side wall of the steel sleeve.
As a preferred embodiment of the invention, an isolation pipeline is arranged outside the outer pipe, and another elastic compensation component is arranged between the inner wall of the isolation pipeline and the outer wall of the outer pipe.
As a preferred embodiment of the invention, the inner tube and the outer tube are steel tubes or corrugated tubes.
The liquid hydrogen vacuum double-wall pipe with the full-caliber welding-free elastic compensation structure is characterized by comprising an inner pipe and an outer pipe, wherein a plurality of detachable elastic compensation components are arranged between the inner pipe and the outer pipe, the elastic compensation components sequentially comprise an annular positioning ring sleeve and a plurality of damping sleeves from inside to outside, and the damping sleeves completely wrap the positioning ring sleeve.
As a preferred embodiment of the invention, the side wall of the positioning ring sleeve is provided with a plurality of positioning screw holes, positioning screws are arranged in the positioning screw holes, the damping sleeve comprises an arc-shaped damping main body, the inner wall of the damping main body is provided with an arc-shaped wrapping arc groove, the outer wall of the damping main body is provided with a plurality of vent holes, and the damping sleeve is made of elastic rubber.
As a preferred embodiment of the invention, the inner tube and the outer tube are steel tubes or corrugated tubes.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a liquid hydrogen vacuum double-wall pipe with a full-caliber welding-free elastic compensation structure, which utilizes an elastic compensation component to form effective support between an inner pipe and an outer pipe, has good damping and buffering effects, and is particularly suitable for pipeline transportation of liquid hydrogen. In addition, the elastic compensation component adopts a solderless structure, so that the installation is easy, the assembly is convenient, the complex process of assembling, welding and reinstalling the traditional support structure is not required, and the elastic compensation component can be directly installed.
Drawings
In order to more clearly illustrate the solution of the present invention, a brief description will be given below of the drawings required for the description of the embodiments, it being obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of a liquid hydrogen vacuum double-wall pipe with a full-caliber welding-free elastic compensation structure;
FIG. 2 is an exploded schematic view of the liquid hydrogen vacuum double-walled tube of FIG. 1 with a full-caliber weld-free elastic compensation structure;
FIG. 3 is a further perspective exploded view of the liquid hydrogen vacuum double-walled tube of FIG. 2 with a full gauge weld-free elastic compensation structure;
FIG. 4 is a schematic perspective view of a damping sleeve of the liquid hydrogen vacuum double-walled tube of FIG. 2;
FIG. 5 is a schematic perspective view of the liquid hydrogen vacuum double-wall tube with the full-caliber welding-free elastic compensation structure in FIG. 1, and is another view angle;
FIG. 6 is a cross-sectional view of the liquid hydrogen vacuum double-walled tube of FIG. 5 taken along line A-A;
FIG. 7 is a cross-sectional view of the liquid hydrogen vacuum double-walled tube of FIG. 5 taken along line B-B;
FIG. 8 is an enlarged schematic detail view of region C of the liquid hydrogen vacuum double wall tube of FIG. 6;
FIG. 9 is a schematic perspective view of another embodiment of an inner liner collar of the liquid hydrogen vacuum double wall tube of FIG. 8;
FIG. 10 is a schematic perspective view of another embodiment of a steel jacket of the liquid hydrogen vacuum double wall tube of FIG. 8;
FIG. 11 is a schematic cross-sectional view of another embodiment of a liquid hydrogen vacuum double-walled tube of the present invention;
FIG. 12 is an exploded perspective view of another embodiment of a damping sleeve for a liquid hydrogen vacuum double wall tube of the present invention;
the labels in the figures are illustrated below: 1. a liquid hydrogen vacuum double-walled tube; 2. an outer tube; 3. an inner tube; 4. a damping sleeve; 41. a shock absorbing body; 42. wrapping the arc groove; 43. a vent hole groove; 5. a positioning ring sleeve; 51. positioning screw holes; 6. a set screw; 7. a steel sleeve; 71. an opening of the steel sleeve; 8. a liner ring sleeve; 81. an opening of the inner lining ring sleeve; s, an elasticity compensation assembly.
Description of the embodiments
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.
As shown in fig. 1 to 3, the liquid hydrogen vacuum double-wall pipe 1 with the full-caliber welding-free elastic compensation structure comprises an inner pipe 3 and an outer pipe 2, wherein a plurality of detachable elastic compensation components S are arranged between the inner pipe 3 and the outer pipe 2, each elastic compensation component S sequentially comprises an annular inner lining ring sleeve 8, an annular steel sleeve 7, an annular positioning ring sleeve 5 and a plurality of damping sleeves 4 from inside to outside, and the inner lining ring sleeve 8, the steel sleeve 7 and the positioning ring sleeve 5 are completely wrapped by the damping sleeves 4.
The number of damper jackets 4 shown in fig. 2 is 2.
The side wall of the positioning ring sleeve 5 is provided with a plurality of positioning screw holes 51, positioning screws 6 are arranged in the positioning screw holes 51, and the positioning screws 6 tightly prop against the outer wall of the steel sleeve 7.
The inner liner 8 is made of a non-metal material. Preferably, the inner liner sleeve 8 is made of polytetrafluoroethylene. Of course, the inner liner 8 may be made of other non-metallic materials.
As shown in fig. 4, the damping sleeve 4 comprises an arc-shaped damping body 41, an arc-shaped wrapping arc groove 42 is formed on the inner wall of the damping body 41, and a plurality of vent holes 43 are formed on the outer wall of the damping body 41.
The damping sleeve 4 is made of elastic rubber.
In addition, the shape of the inner ring 8, the steel sleeve 7 and the positioning ring 5 is not limited to the ring shape, and may be other shapes such as quadrangle, pentagon, hexagon, etc.
In addition, the inner collar 8 and the steel sleeve 7 can be omitted, and only the positioning collar 5 and the damping sleeve 4 remain.
In addition, the inner tube 3 and the outer tube 2 may be corrugated tubes or other tubes.
The following describes the installation method of the liquid hydrogen vacuum double-wall pipe 1, and the method comprises the following steps:
step S1, as shown in FIG. 3, sleeving a lining ring sleeve 8 on the inner pipe 3;
s2, sleeving the steel sleeve 7 on the inner lining ring sleeve 8;
s3, sleeving the positioning ring sleeve 5 on the steel sleeve 7, and screwing all the positioning screws 6 to tightly prop the head parts of the positioning screws 6 against the outer wall of the steel sleeve 7;
s4, sleeving a pair of damping sleeves 4 outside the positioning annular sleeve 5 in a splicing manner, so that the lining annular sleeve 8, the steel sleeve 7 and the positioning annular sleeve 5 are completely wrapped by the wrapping arc groove 42 of the damping sleeve 4;
and S5, inserting the inner tube 3 provided with the elastic compensation assembly S into the outer tube 2 to complete the installation of the liquid hydrogen vacuum double-wall tube 1.
By utilizing the elastic compensation component S, an effective support is formed between the inner pipe 3 and the outer pipe 2, and the damping and buffering effects are good, so that the device is particularly suitable for the pipeline transportation of liquid hydrogen. In addition, the elastic compensation component S adopts a welding spot-free structure, so that the installation is easy and the assembly is convenient.
In particular, when the ultra-low temperature liquid is conveyed, the elastic compensation component S can give a certain compensation amount to the shrinkage of the inner tube 3, so that the larger radial stress of the inner tube generated by the traditional rigid support structure is avoided.
The liquid hydrogen vacuum double-wall pipe 1 can also be used for conveying other media, such as various low-carbon or zero-carbon fuels, such as liquefied natural gas, liquefied petroleum gas, liquid ammonia, methanol and the like.
Because the zero-carbon low-carbon fuels such as liquid hydrogen, liquid ammonia and the like have the characteristics of ultralow temperature, no color, no smell, inflammability, explosive property, huge toxicity and the like, and are all carried out in a high-pressure state when in use, the double-wall pipe can play roles in heat preservation, heat insulation and leakage prevention when the ultralow-temperature fuel is conveyed, and the interlayer can have a ventilation function when the high-pressure gaseous fuel is conveyed, so that leakage is prevented. In addition, the elastic compensation component adopts an inner supporting structure, is suitable for manufacturing double-wall pipes by pipelines with various sizes and diameters, and is particularly suitable for various new energy fuel power ships built at present and in the future.
As shown in fig. 9, another embodiment of the liner sleeve 8 is shown. At this time, a liner sleeve opening 81 is provided on the sidewall of the liner sleeve 8. The inner ring sleeve opening 81 enables the inner ring sleeve 8 to have certain elasticity, and the sleeving operation is convenient.
As shown in fig. 10, another embodiment of the steel jacket 7 is shown. At this time, a steel jacket opening 71 is provided on the side wall of the steel jacket 7. The steel sleeve opening 71 enables the steel sleeve 7 to have certain elasticity, and the sleeving operation is convenient.
Another embodiment of a liquid hydrogen vacuum double wall tube of the present invention is shown in fig. 11. At this time, an isolation pipe 9 is disposed outside the outer pipe 2, and another elastic compensation component S is disposed between the inner wall of the isolation pipe 9 and the outer wall of the outer pipe 2.
The isolation pipe 9 is used for cold insulation, and the isolation pipe 9 may be subjected to cold insulation operation in advance when the inner pipe 3 is supplied with liquid hydrogen. Obviously, a new pipeline is added to the outer wall of the isolation pipeline 9 to form a superposition structure.
As shown in fig. 12, the number of the damper jackets 4 is 4 at this time. Obviously, the number of the damping sleeves 4 can be other numbers, such as 6 or 8.
Without being limited thereto, any changes or substitutions that are not contemplated by the inventors are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.
Claims (12)
1. The liquid hydrogen vacuum double-wall pipe with the full-caliber welding-free elastic compensation structure is characterized in that the liquid hydrogen vacuum double-wall pipe (1) with the full-caliber welding-free elastic compensation structure comprises an inner pipe (3) and an outer pipe (2), a plurality of detachable elastic compensation components (S) are arranged between the inner pipe (3) and the outer pipe (2), the elastic compensation components (S) sequentially comprise an annular inner lining ring sleeve (8), an annular steel sleeve (7), an annular positioning ring sleeve (5) and a plurality of shock absorption sleeves (4) from inside to outside, and the inner lining ring sleeve (8), the steel sleeve (7) and the positioning ring sleeve (5) are completely wrapped by the shock absorption sleeves (4).
2. The liquid hydrogen vacuum double-wall pipe with the full-caliber welding-free elastic compensation structure according to claim 1, wherein a plurality of positioning screw holes (51) are formed in the side wall of the positioning ring sleeve (5), positioning screws (6) are arranged in the positioning screw holes (51), and the positioning screws (6) tightly abut against the outer wall of the steel sleeve (7).
3. The liquid hydrogen vacuum double-wall pipe with the full-caliber welding-free elastic compensation structure according to claim 2, wherein the inner lining ring sleeve (8) is made of polytetrafluoroethylene.
4. The liquid hydrogen vacuum double-wall pipe with the full-caliber welding-free elastic compensation structure according to claim 1, wherein the damping sleeve (4) comprises an arc-shaped damping main body (41), an arc-shaped wrapping arc groove (42) is formed in the inner wall of the damping main body (41), and a plurality of vent holes (43) are formed in the outer wall of the damping main body (41).
5. The liquid hydrogen vacuum double-wall pipe with the full-caliber welding-free elastic compensation structure according to claim 4, wherein the damping sleeve (4) is made of elastic rubber.
6. The liquid hydrogen vacuum double-wall pipe with the full-caliber welding-free elastic compensation structure according to claim 1, wherein an inner lining ring sleeve opening (81) is arranged on the side wall of the inner lining ring sleeve (8).
7. The liquid hydrogen vacuum double-wall pipe with the full-caliber welding-free elastic compensation structure according to claim 1, wherein a steel sleeve opening (71) is arranged on the side wall of the steel sleeve (7).
8. The liquid hydrogen vacuum double-wall pipe with the full-caliber welding-free elastic compensation structure according to claim 1, wherein an isolation pipeline (9) is arranged outside the outer pipe (2), and another elastic compensation component (S) is arranged between the inner wall of the isolation pipeline (9) and the outer wall of the outer pipe (2).
9. The liquid hydrogen vacuum double-wall pipe with the full-caliber welding-free elastic compensation structure according to claim 1, wherein the inner pipe (3) and the outer pipe (2) are steel pipes or corrugated pipes.
10. The liquid hydrogen vacuum double-wall pipe with the full-caliber welding-free elastic compensation structure is characterized in that the liquid hydrogen vacuum double-wall pipe (1) with the full-caliber welding-free elastic compensation structure comprises an inner pipe (3) and an outer pipe (2), a plurality of detachable elastic compensation components (S) are arranged between the inner pipe (3) and the outer pipe (2), the elastic compensation components (S) sequentially comprise an annular positioning ring sleeve (5) and a plurality of damping sleeves (4) from inside to outside, and the damping sleeves (4) completely wrap the positioning ring sleeve (5).
11. The liquid hydrogen vacuum double-wall pipe with the full-caliber welding-free elastic compensation structure according to claim 10, wherein a plurality of positioning screw holes (51) are formed in the side wall of the positioning ring sleeve (5), positioning screws (6) are arranged in the positioning screw holes (51), the damping sleeve (4) comprises an arc-shaped damping main body (41), an arc-shaped wrapping arc groove (42) is formed in the inner wall of the damping main body (41), a plurality of vent holes (43) are formed in the outer wall of the damping main body (41), and the damping sleeve (4) is made of elastic rubber.
12. The liquid hydrogen vacuum double-wall pipe with the full-caliber welding-free elastic compensation structure according to claim 10, wherein the inner pipe (3) and the outer pipe (2) are steel pipes or corrugated pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310754062.0A CN116734051A (en) | 2023-06-26 | 2023-06-26 | Liquid hydrogen vacuum double-wall pipe with full-caliber welding-free elastic compensation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310754062.0A CN116734051A (en) | 2023-06-26 | 2023-06-26 | Liquid hydrogen vacuum double-wall pipe with full-caliber welding-free elastic compensation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116734051A true CN116734051A (en) | 2023-09-12 |
Family
ID=87914780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310754062.0A Pending CN116734051A (en) | 2023-06-26 | 2023-06-26 | Liquid hydrogen vacuum double-wall pipe with full-caliber welding-free elastic compensation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116734051A (en) |
-
2023
- 2023-06-26 CN CN202310754062.0A patent/CN116734051A/en active Pending
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