CN217463680U - Vacuum heat insulation type low-temperature liquid long-distance conveying pipeline - Google Patents
Vacuum heat insulation type low-temperature liquid long-distance conveying pipeline Download PDFInfo
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- CN217463680U CN217463680U CN202221457491.9U CN202221457491U CN217463680U CN 217463680 U CN217463680 U CN 217463680U CN 202221457491 U CN202221457491 U CN 202221457491U CN 217463680 U CN217463680 U CN 217463680U
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Abstract
The utility model discloses a thermal-insulated type cryogenic liquids long distance pipeline in vacuum, including inner tube, outer tube, vacuum cavity head and vacuum suction sealing valve, the outer tube is the multistage, and the equal suit of multistage outer tube is outside the inner tube, has the clearance between the inner wall of outer tube and the outer wall of inner tube, through vacuum cavity head fixed connection between the both ends of outer tube and the outer wall of inner tube, and the communicating vacuum suction sealing valve in clearance between the outside lateral wall setting of outer tube and inner tube and the outer tube passes through vacuum cavity head fixed connection between two sections adjacent outer tubes. Compared with the prior art, the utility model discloses a bellows compensation pipeline's expend with heat and contract with cold's length is met an emergency to prevent that the pipeline from damaging, and adopt the design of vacuum mode, keep warm to the liquid in the pipeline, prevent the temperature and run off, thereby prevent to deteriorate in the cryogenic liquids transportation process, and set up the condensate adsorption equipment in the vacuum space, can guarantee the drying of pipeline, installation convenient to use has the value of popularization and application.
Description
Technical Field
The utility model relates to a liquid conveying pipeline especially relates to a vacuum heat insulation type cryogenic liquids long distance conveying pipeline.
Background
Cryogenic liquid contains a plurality of kinds, such as liquid oxygen, liquid nitrogen, liquid argon, liquefied natural gas, etc., and long-distance transportation of cryogenic liquid in the prior art can lead to pipeline damage or temperature loss, leading to cryogenic liquid deterioration, pipeline damage, such as pipeline unable to bear too large temperature difference, leading to cracking, or pipeline material expend with heat and contract with cold leads to pipeline damage, and therefore, a pipeline for long-distance transportation of cryogenic liquid is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a thermal-insulated type cryogenic liquids long distance pipeline in vacuum.
In order to achieve the purpose, the utility model is implemented according to the following technical scheme:
the utility model discloses an inner tube, outer tube, vacuum cavity head and vacuum suction sealing valve, the outer tube is the multistage, the multistage the outer tube all suit in outside the inner tube, the inner wall of outer tube with the clearance has between the outer wall of inner tube, the both ends of outer tube with pass through between the outer wall of inner tube vacuum cavity head fixed connection, the outside lateral wall setting of outer tube with the clearance communicates with each other between inner tube and the outer tube vacuum suction sealing valve, adjacent two sections pass through between the outer tube vacuum cavity head fixed connection.
Furthermore, the inner pipe is in multiple sections, and two adjacent sections of the inner pipe are connected through a telescopic corrugated pipe.
As an improvement, an outer tube support ring is arranged between the outer wall of the inner tube and the inner wall of the outer tube, and support ring vent holes are arranged in the radial direction of the outer tube support ring and penetrate through the outer tube support ring.
As an improvement, a condensate adsorption device is arranged in a gap between the outer wall of the inner pipe and the inner wall of the outer pipe.
Specifically, the condensate adsorption equipment holds storehouse, condensing agent filler cap and condensate adsorbent by the adsorbent and constitutes, the adsorbent hold the storehouse fixed set up in the outer wall of inner tube, the condensing agent filler cap set up in the outer wall in storehouse is held to the adsorbent, the condensate adsorbent fill in the adsorbent holds in the storehouse.
Preferably, the two adjacent sections of outer pipes are fixedly connected with the vacuum cavity end enclosure in a welding mode. The outer pipe support ring is made of glass fiber reinforced plastic. The condensate adsorbent is a molecular sieve material.
The utility model has the advantages that:
the utility model relates to a vacuum heat insulation type cryogenic liquids long distance pipeline, compared with the prior art, the utility model discloses a bellows compensating pipe's expend with heat and contract with cold's length is met an emergency to prevent that the pipeline from damaging, and adopt the design of vacuum mode, keep warm to the liquid in the pipeline, prevent the temperature loss, thereby prevent that the cryogenic liquids transportation process is rotten, and set up the condensate adsorption equipment in the vacuum space, can guarantee the drying of pipeline, installation convenient to use has the value of popularization and application.
Drawings
Fig. 1 is a schematic sectional structure of the present invention.
In the figure: the device comprises an inner tube 1, a telescopic corrugated tube 2, an outer tube 3, a vacuum cavity end enclosure 4, a vacuum suction sealing valve 5, an adsorbent containing bin 6, a condensing agent filling cover 7, a condensed liquid adsorbent 8, an outer tube support ring 9 and a support ring vent hole 10.
Detailed Description
The invention will be further described with reference to the drawings and specific embodiments, illustrative embodiments and description of which are provided herein to explain the invention, but not as a limitation thereof.
As shown in fig. 1: the utility model discloses an inner tube 1, outer tube 3, vacuum cavity head 4 and vacuum suction sealing valve 5, outer tube 3 is the multistage, the multistage outer tube 3 all suit in 1 is in the inner tube outside, the inner wall of outer tube 3 with the clearance has between the outer wall of inner tube 1, the both ends of outer tube 3 with pass through between the outer wall of inner tube 1 vacuum cavity head 4 fixed connection, the outside lateral wall setting of outer tube 3 with the clearance communicates with each other between inner tube 1 and the outer tube 3 vacuum suction sealing valve 5, adjacent two sections pass through between the outer tube 3 vacuum cavity head 4 fixed connection.
Further, the inner pipe 1 is in multiple sections, and the adjacent two sections of the inner pipe 1 are connected through a telescopic corrugated pipe 2.
As a modification, an outer tube support ring 9 is arranged between the outer wall of the inner tube 1 and the inner wall of the outer tube 3, and support ring vent holes 10 are arranged in the radial direction of the outer tube support ring 9, and the support ring vent holes 10 penetrate through the outer tube support ring 9.
As a modification, a condensate adsorption device is disposed in a gap between the outer wall of the inner tube 1 and the inner wall of the outer tube 3.
Specifically, the condensate adsorption equipment comprises an adsorbent containing bin 6, a condensate filling cover 7 and a condensate adsorbent 8, wherein the adsorbent containing bin 6 is fixedly arranged on the outer wall of the inner pipe 1, the condensate filling cover 7 is arranged on the outer wall of the adsorbent containing bin 6, and the condensate adsorbent 8 is filled in the adsorbent containing bin 6.
Preferably, the two adjacent sections of the outer pipe 3 are fixedly connected with the vacuum cavity end enclosure 4 in a welding mode. The outer tube support ring 9 is made of glass fiber reinforced plastic. The condensate adsorbent 8 is a 5A molecular sieve material.
Example (b):
the materials of the inner tube 1, the telescopic corrugated tube 2 and the outer tube 3 of the utility model are all 06Crl9Nil0 o; the telescopic corrugated pipe 2 specification DN100, the compensation quantity is 20-25 mm, the pressure resistance is 0.8Pa, the geometric shape of the pipe section is determined, the pipe section is used for coping with the expansion and contraction of the inner pipe 1 when low-temperature liquid passes through, before welding and assembling, the inner pipe is subjected to acid pickling and passivation treatment, and all parts of the inner pipe are thoroughly cleaned by carbon tetrachloride and absolute alcohol respectively, and oil stain, impurities, dust and the like are removed. Pre-vacuum nitrogen leakage detection is carried out on the corrugated pipe, the processed and formed inner pipe section and the outer pipe section in advance, and the gas leakage rate is not more than 1.33X10 10 Pa.m 3/so; the pipeline welding is completely performed by adopting chlorine arc welding, and the welding wire is selected from the welding wire types matched with the base metal: and grinding and polishing the outer welding line after welding, and treating by using polishing paste. After the inner tube group is welded, performing nondestructive radiographic inspection according to GB150, and requiring a welding seam standard I grade; respectively carrying out 2.4MPa water pressure and 1.6MPa nitrogen gas tightness tests according to the test pressure specified by the standard, and ensuring that no leakage is allowed within 30 minutes; then blowing off the mixture by using dry nitrogen; and finally, carrying out vacuum nitrogen leakage detection on the inner pipe, after the assembly welding of the inner pipe assembly is finished and the leakage detection is qualified, implementing multi-layer heat insulation winding, using alkali-free degreased glass fiber cloth (pre-treated) for the isolation layer, using rust-proof aluminum thin for the reflection layer, winding 10-20 layers of the two materials at intervals, and using the glass fiber cloth as the first layer and the last layer. 5A molecular sieve, which needs to be activated at high temperature before installation;
the utility model discloses a pipeline leaks heat quantity detected data result as follows:
when the pipeline of the utility model is welded, the protection gas is adopted for welding, and the protection gas at the root of the welding seam is used for selecting the matched filling material;
the technical scheme of the utility model is not limited to the restriction of above-mentioned specific embodiment, all according to the utility model discloses a technical scheme makes technical deformation, all falls into within the protection scope of the utility model.
Claims (8)
1. A vacuum heat insulation type cryogenic liquid long-distance conveying pipeline is characterized in that: including inner tube (1), outer tube (3), vacuum cavity head (4) and vacuum suction sealing valve (5), outer tube (3) are the multistage, the multistage outer tube (3) all suit in outside inner tube (1), the inner wall of outer tube (3) with the clearance has between the outer wall of inner tube (1), the both ends of outer tube (3) with pass through between the outer wall of inner tube (1) vacuum cavity head (4) fixed connection, the outside lateral wall of outer tube (3) set up with the clearance communicates with each other between inner tube (1) and outer tube (3) vacuum suction sealing valve (5), adjacent two sections pass through between outer tube (3) vacuum cavity head (4) fixed connection.
2. The vacuum insulated cryogenic liquid long distance transport pipeline of claim 1, wherein: the inner pipe (1) is of multiple sections, and the adjacent two sections of the inner pipe (1) are connected through a telescopic corrugated pipe (2).
3. The vacuum insulated cryogenic liquid long haul pipeline of claim 1, wherein: an outer tube supporting ring (9) is arranged between the outer wall of the inner tube (1) and the inner wall of the outer tube (3), supporting ring air vents (10) are arranged in the radial direction of the outer tube supporting ring (9), and the supporting ring air vents (10) penetrate through the outer tube supporting ring (9).
4. The vacuum insulated cryogenic liquid long distance transport pipeline of claim 1, wherein: and a condensate adsorption device is arranged in a gap between the outer wall of the inner pipe (1) and the inner wall of the outer pipe (3).
5. The vacuum insulated cryogenic liquid long haul pipeline of claim 4, wherein: the condensate adsorption equipment comprises an adsorbent accommodating bin (6), a condensing agent filling cover (7) and a condensate adsorbent (8), wherein the adsorbent accommodating bin (6) is fixedly arranged on the outer wall of the inner tube (1), the condensing agent filling cover (7) is arranged on the outer wall of the adsorbent accommodating bin (6), and the condensate adsorbent (8) is filled in the adsorbent accommodating bin (6).
6. The vacuum insulated cryogenic liquid long distance transport pipeline of claim 1, wherein: the two adjacent sections of the outer pipe (3) are fixedly connected with the vacuum cavity end enclosure (4) in a welding mode.
7. The vacuum insulated cryogenic liquid long haul pipeline of claim 3, wherein: the outer pipe support ring (9) is made of glass fiber reinforced plastic.
8. The vacuum insulated cryogenic liquid long haul pipeline of claim 5, wherein: the condensate adsorbent (8) is a 5A molecular sieve material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221457491.9U CN217463680U (en) | 2022-06-10 | 2022-06-10 | Vacuum heat insulation type low-temperature liquid long-distance conveying pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221457491.9U CN217463680U (en) | 2022-06-10 | 2022-06-10 | Vacuum heat insulation type low-temperature liquid long-distance conveying pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217463680U true CN217463680U (en) | 2022-09-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221457491.9U Active CN217463680U (en) | 2022-06-10 | 2022-06-10 | Vacuum heat insulation type low-temperature liquid long-distance conveying pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217463680U (en) |
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2022
- 2022-06-10 CN CN202221457491.9U patent/CN217463680U/en active Active
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