CN211738262U - Fluid penetrating device for vacuum heat insulation - Google Patents
Fluid penetrating device for vacuum heat insulation Download PDFInfo
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- CN211738262U CN211738262U CN202020298464.6U CN202020298464U CN211738262U CN 211738262 U CN211738262 U CN 211738262U CN 202020298464 U CN202020298464 U CN 202020298464U CN 211738262 U CN211738262 U CN 211738262U
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Abstract
The utility model relates to a storehouse device is worn to fluid for vacuum insulation, it includes vacuum cover (1), the fixed mounting flange (3) that is provided with on vacuum cover (1), mounting flange (3) top is provided with flange (8), be provided with bellows (6) between mounting flange (3) and flange (8), flange (8) upside is provided with thin wall flange (10), wear to be equipped with fluid pipeline (12) between mounting flange (3), flange (8) and thin wall flange (10), bellows (6) suit is in fluid pipeline (12) periphery. The utility model relates to a storehouse device is worn to fluid for vacuum insulation, it is used for the fluid of vacuum heat insulation layer to wear the storehouse, can effectively reduce the influence of local heat leakage, improves adiabatic effect, reduces local thermal stress, improve equipment life.
Description
Technical Field
The utility model relates to a storehouse device is worn to fluid for vacuum insulation belongs to vacuum insulation technical field.
Background
Vacuum insulation is widely applied to the industries of large scientific instruments and fine chemical engineering as the most efficient equipment insulation mode. Most of the prior fluid penetrating structure of the vacuum heat insulation layer is directly welded on a vacuum cover by a fluid pipeline. The biggest disadvantage of this structure is that the low or high temperature fluid pipe conducts heat with the normal temperature vacuum enclosure when the fluid pipe passes through the vacuum enclosure, resulting in a large amount of heat leakage. For small vacuum insulation equipment, the local heat leakage accounts for most of the heat leakage of the whole equipment.
Meanwhile, when the fluid is low-temperature fluid, dew or ice can be generated on the outer wall of the vacuum cover in a local heat leakage area, so that the use of equipment is influenced; when the fluid is high-temperature fluid, the vacuum cover easily scalds a user in a local heat leakage area, so that potential safety hazards are caused.
In addition, the influence of thermal stress is also very prominent. Because the fluid pipeline is thin (1-3 mm) and the vacuum cover is thick (more than 20 mm), the temperature difference between the low-temperature pipeline and the vacuum cover can generate great thermal stress. Cracks are easy to generate in the scene of temperature alternation, air leakage and failure of the vacuum cover are caused, and the service life of the equipment is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a fluid wears storehouse device for vacuum insulation is provided to above-mentioned prior art, and it is used for the fluid of vacuum heat insulation layer to wear the storehouse, can effectively reduce the influence of local heat leakage, improves adiabatic effect, reduces local thermal stress, improve equipment life.
The utility model provides a technical scheme that above-mentioned problem adopted does: a fluid passing device for vacuum insulation comprises a vacuum cover, wherein a fixing flange is fixedly arranged on the vacuum cover, a limiting flange is arranged above the fixing flange, a corrugated pipe is arranged between the fixing flange and the limiting flange, a thin-wall flange is arranged on the upper side of the limiting flange, a fluid pipeline is arranged among the fixing flange, the limiting flange and the thin-wall flange in a penetrating mode, and the corrugated pipe is sleeved on the periphery of the fluid pipeline.
Preferably, the fixed flange, the limiting flange and the thin-wall flange are connected through a plurality of screws distributed annularly.
Preferably, the lower end of the screw is connected with a vacuum cover.
Preferably, the screw is provided with a first fastening nut at the upper side of the fixing flange, and the fixing flange is fixedly arranged on the vacuum cover through the first fastening nut; a limiting nut is arranged at the lower side of the limiting flange on the screw; and the screw rod is provided with a second fastening nut at the upper side of the thin-wall flange, and the thin-wall flange is fixedly arranged on the limiting flange through the second fastening nut.
Preferably, the fluid pipeline is fixedly arranged on the thin-wall flange through welding.
Preferably, the vacuum cover and the fixing flange are sealed through a first O-shaped ring.
Preferably, the limiting flange and the thin-wall flange are sealed through a second O-shaped ring.
Preferably, liquid nitrogen is filled in the fluid pipeline, the pressure of the liquid nitrogen is 0.5MPa, and the diameter of the pipeline is 10 mm.
Preferably, the corrugated pipe is a standard corrugated pipe with the diameter of 25mm and the length of 50 mm.
Preferably, the rubber-plastic heat-insulating layer is wrapped outside the fluid pipeline, and the gap is filled with a polyurethane foam material.
Compared with the prior art, the utility model has the advantages of:
1. the utility model separates the connection of the fluid pipeline and the vacuum cover, reduces the external heat conduction of the fluid pipeline through a section of thin-wall flange, reduces the influence of the thermal stress of the structure through a section of corrugated pipe, and solves the problems of large local heat leakage of the warehouse-through part and cracks caused by the thermal stress;
2. the utility model discloses this structure is easily installed, and it is convenient to change, and promotes great to vacuum insulation's performance.
Drawings
Fig. 1 is a schematic structural view of the fluid penetrating device for vacuum insulation of the present invention.
Fig. 2 is a top view of fig. 1.
Wherein:
First O-ring 2
Screw 5
Second O-ring 9
Thin-walled flange 10
A fluid line 12.
Detailed Description
As shown in fig. 1 and fig. 2, the fluid passing device for vacuum insulation in this embodiment includes a vacuum cover 1, a fixed flange 3 is fixedly disposed on the vacuum cover 1, a limit flange 8 is disposed above the fixed flange 3, a corrugated pipe 6 is disposed between the fixed flange 3 and the limit flange 8, a thin-walled flange 10 is disposed on the upper side of the limit flange 8, a fluid pipeline 12 is disposed between the fixed flange 3, the limit flange 8 and the thin-walled flange 10 in a penetrating manner, and the corrugated pipe 6 is sleeved on the periphery of the fluid pipeline 12;
the fixed flange 3, the limiting flange 8 and the thin-wall flange 10 are connected through a plurality of annularly distributed screw rods 5;
the lower end of the screw rod 5 is connected with the vacuum cover 1;
a first fastening nut 4 is arranged at the upper side position of the fixed flange 3 of the screw rod 5, and the fixed flange 3 is fixedly arranged on the vacuum cover 1 through the first fastening nut 4;
the screw 5 is provided with a limiting nut 7 at the lower side of the limiting flange 8, and the height of the limiting flange 8 can be adjusted through the limiting nut 7;
a second fastening nut 11 is arranged at the upper side of the thin-wall flange 10 of the screw 5, and the thin-wall flange 10 is fixedly arranged on the limiting flange 8 through the second fastening nut 11;
the fluid pipeline 12 is fixedly arranged on the thin-wall flange 10 by welding;
the vacuum cover 1 and the fixed flange 3 are sealed through a first O-shaped ring 2 (an oxygen-free copper sealing gasket can be adopted for an ultrahigh vacuum environment);
the spacing flange 8 and the thin-wall flange 10 are sealed by a second O-shaped ring 9 (an oxygen-free copper sealing gasket can be adopted for an ultrahigh vacuum environment);
the thickness of the thin-wall flange is as thin as possible under the condition of meeting the requirement of strength. The number of fluid pipelines is not limited, and a plurality of fluid pipelines can be welded on the thin-wall flange under the condition of enough space.
Liquid nitrogen (77K) is filled in the fluid pipeline 12, the pressure of the liquid nitrogen is 0.5MPa, and the diameter of the pipeline is 10 mm;
the vacuum degree in the vacuum cover 1 at normal temperature is required to be 0.1 Pa;
the length of the corrugated pipe 6 is 50mm, and the diameter of the corrugated pipe is 25 mm;
the fixed flange 3, the limiting flange 8 and the thin-wall flange 10 are DN10 standard flanges with the thickness of 10 mm;
the screw 5 is an M12 screw;
the fluid pipeline 12 is wrapped by a rubber-plastic heat-insulating layer, and a polyurethane foam material is used for filling gaps.
In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.
Claims (10)
1. A fluid passing device for vacuum heat insulation is characterized in that: the vacuum cover comprises a vacuum cover (1), wherein a fixing flange (3) is fixedly arranged on the vacuum cover (1), a limiting flange (8) is arranged above the fixing flange (3), a corrugated pipe (6) is arranged between the fixing flange (3) and the limiting flange (8), a thin-wall flange (10) is arranged on the upper side of the limiting flange (8), a fluid pipeline (12) is arranged among the fixing flange (3), the limiting flange (8) and the thin-wall flange (10) in a penetrating mode, and the corrugated pipe (6) is sleeved on the periphery of the fluid pipeline (12).
2. The fluid penetrating device for vacuum insulation according to claim 1, wherein: the fixed flange (3), the limiting flange (8) and the thin-wall flange (10) are connected through a plurality of annularly distributed screw rods (5).
3. The fluid penetrating device for vacuum insulation according to claim 2, wherein: the lower end of the screw rod (5) is connected with the vacuum cover (1).
4. The fluid penetrating device for vacuum insulation according to claim 2, wherein: the screw (5) is provided with a first fastening nut (4) at the upper side of the fixed flange (3), and the fixed flange (3) is fixedly arranged on the vacuum cover (1) through the first fastening nut (4); a limiting nut (7) is arranged at the lower side of the limiting flange (8) of the screw rod (5); the screw rod (5) is provided with a second fastening nut (11) at the upper side of the thin-wall flange (10), and the thin-wall flange (10) is fixedly arranged on the limiting flange (8) through the second fastening nut (11).
5. The fluid penetrating device for vacuum insulation according to claim 1, wherein: the fluid pipeline (12) is fixedly arranged on the thin-wall flange (10) through welding.
6. The fluid penetrating device for vacuum insulation according to claim 1, wherein: the vacuum cover (1) and the fixed flange (3) are sealed through a first O-shaped ring (2).
7. The fluid penetrating device for vacuum insulation according to claim 1, wherein: and the limiting flange (8) and the thin-wall flange (10) are sealed through a second O-shaped ring (9).
8. The fluid penetrating device for vacuum insulation according to claim 1, wherein: liquid nitrogen is filled in the fluid pipeline (12), the pressure of the liquid nitrogen is 0.5MPa, and the diameter of the pipeline is 10 mm.
9. The fluid penetrating device for vacuum insulation according to claim 1, wherein: the corrugated pipe (6) is a standard corrugated pipe with the diameter of 25mm and the length of 50 mm.
10. The fluid penetrating device for vacuum insulation according to claim 9, wherein: the fluid pipeline (12) is wrapped by a rubber-plastic heat-insulating layer, and a polyurethane foam material is used for filling gaps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020298464.6U CN211738262U (en) | 2020-03-12 | 2020-03-12 | Fluid penetrating device for vacuum heat insulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020298464.6U CN211738262U (en) | 2020-03-12 | 2020-03-12 | Fluid penetrating device for vacuum heat insulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211738262U true CN211738262U (en) | 2020-10-23 |
Family
ID=72857876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020298464.6U Active CN211738262U (en) | 2020-03-12 | 2020-03-12 | Fluid penetrating device for vacuum heat insulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211738262U (en) |
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2020
- 2020-03-12 CN CN202020298464.6U patent/CN211738262U/en active Active
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