CN204592716U - A kind of vacuum tube structure - Google Patents
A kind of vacuum tube structure Download PDFInfo
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- CN204592716U CN204592716U CN201520310935.XU CN201520310935U CN204592716U CN 204592716 U CN204592716 U CN 204592716U CN 201520310935 U CN201520310935 U CN 201520310935U CN 204592716 U CN204592716 U CN 204592716U
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- flexblejoint
- interior pipe
- blank flange
- vacuum tube
- outer tube
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Abstract
The utility model discloses a kind of vacuum tube structure, comprise outer tube and be arranged in the interior pipe in outer tube, the two ends of outer tube are also respectively arranged with the first blank flange and the second blank flange, described first blank flange and the second blank flange are provided with the through hole passed for interior pipe, also comprise FlexbleJoint, described FlexbleJoint is sheathed on outside interior pipe, and FlexbleJoint is arranged in outer tube, described first blank flange is fixedly connected with the outer wall of interior pipe, the outer wall of FlexbleJoint near one end of the first blank flange with interior pipe is fixedly connected with, the other end of FlexbleJoint is fixedly connected on the second blank flange.This structure not only make FlexbleJoint in vacuum tube can play good interior tubular axis upwards deformation-compensated, keep the good heat-insulating property of vacuum tube, also make fluid can by steadily flowing through in this structure and making vacuum tube have good working life and Safety performance.
Description
Technical field
The utility model relates to field, cryogenic fluid feed conduit road, particularly relates to a kind of vacuum tube structure.
Background technique
Vacuum tube is made up of interior pipe, outer tube, FlexbleJoint, multilayer insulant, outer tube flameproof apparatus, forms interlayer, be compounded with multilayer insulant in interlayer between interior pipe and outer tube, to reduce radiative heat transfer; And interlayer is pumped into high vacuum state, to reduce heat transfer by convection; With the isolation of low thermal conductivity material between inner and outer pipes, to reduce solid heat transfer, thus interior pipe loss of refrigeration capacity is controlled to bottom line, fully meet the long distance delivery such as cryogenic liquide (LOX, LIN, LAr, LNG).
Vacuum tube main material is stainless steel (S30408), can produce the contraction of 3 ‰, can arrange compensator during design according to length of pipe section under the low temperature of subzero-196 DEG C, pipe contour projector at low temperatures in compensating.Therefore compensator itself is thinner, realizes stretch compensation when vacuum tube shrinks.Direct and interior pipe welding (as shown in Figure 1) of the compensator of traditional vacuum tube.When liquid at high speed is by producing friction, collision to inner-walls of duct and compensator during pipeline, add this in welding process to the heat affecting of vacuum tube material, compensator can damage because of long-term friction, causes vacuum failure, especially easily occurs in the bond pad locations of connection.Cryogenic liquide also can enter into interlayer subsequently, and be heated undergoes rapid expansion, finally from venting ejection of finding time.If medium is inert gas in pipe, the people of periphery can be made to suffocate; If in pipe be this dangerous situation such as easy generation burning and blast of flammable explosion hazard gases.
Model utility content
For vacuum tube traditional in above-mentioned prior art in use, when liquid at high speed is by producing friction, collision to inner-walls of duct and compensator during pipeline, add this in welding process to the heat affecting of vacuum tube material, compensator can damage because of long-term friction, more than damage the fluid undergoes rapid expansion causing revealing, the follow-up problem that may produce various dangerous situation, the utility model provides a kind of vacuum tube structure.
For the problems referred to above, a kind of vacuum tube structure that the utility model provides is achieved the goal by following technological points: a kind of vacuum tube structure, comprise outer tube and be arranged in the interior pipe in outer tube, the two ends of outer tube are also respectively arranged with the first blank flange and the second blank flange, described first blank flange and the second blank flange are provided with the through hole passed for interior pipe, also comprise FlexbleJoint, described FlexbleJoint is sheathed on outside interior pipe, and FlexbleJoint is arranged in outer tube, described first blank flange is fixedly connected with the outer wall of interior pipe, the outer wall of FlexbleJoint near one end of the first blank flange with interior pipe is fixedly connected with, the other end of FlexbleJoint is fixedly connected on the second blank flange.
Concrete, the interior pipe arranged is as the runner of cold fluid, space between outer tube and interior pipe is used for arranging thermal-protective coating and FlexbleJoint, in above structure, because FlexbleJoint is not re-used as the linkage section of pipe in two sections, interior pipe is like this weldless tube of equal wall thickness, eliminate existing vacuum tube exist liquid by interior pipe time, the situation such as friction, collision that interior pipe and FlexbleJoint tie point place exist, particularly when fluid high-speed flows, the structure that the utility model provides is appointed fluid so can be made to smoothly pass; When fluid flows through that in interior pipe, pipe shrinks distortion, because interior pipe is fixedly connected with the first blank flange, the two ends of FlexbleJoint are individually fixed on interior pipe and the second blank flange, ripple compensation have a high regard for so can resiliently deformable compensate in the contraction of pipe, avoid the Joint failure of inner and outer tubes and affect the vacuum state of interlayer between the two; In this structure, be convenient to adopt tradition to implement conveniently and seal to be welded to connect means of fixation reliably, for fixing FlexbleJoint and interior pipe and the second blank flange, the first blank flange and outer tube, keep to realize the excellent degree of vacuum of interlayer, the molten bath be more than welded to connect is owing to being positioned at the outer wall of pipe, therefore be welded to connect the heat affecting of inner tube material little, ensure that the planarization of inner tube material performance and inner tube wall, further extend the working life of interior pipe.
Further technological scheme is:
For keep interior pipe relative to outer tube position stability, reduce in pipe with the first blank flange tie point, FlexbleJoint and interior pipe and the stressed size of the second blank flange tie point in process fluid flow, be beneficial to the working life of this structure, FlexbleJoint is also provided with sliding sleeve near between one end of the second blank flange and the gap of interior pipe.Can adopt as the form such as sliding bearing, bearing shell with upper sliding sleeve.
As a kind ofly drawing materials conveniently, having, certain flexibility to flow the vibrations brought, the sliding sleeve material with good self-lubricating property to adapt to fluid, and described sliding sleeve is the teflon collar.
For reducing the pressure size between sliding sleeve and interior pipe on surface of contact, by the structural type arranging longer by the surface of contact of sliding sleeve and interior pipe, the length being set to described sliding sleeve is not less than 5cm.
For the benefit of keep the coaxality of FlexbleJoint and interior pipe, the uniformity being beneficial to FlexbleJoint distortion is beneficial to the life-span of FlexbleJoint, also comprise the transition ring that length is not less than 2cm, described transition ring is fixed on FlexbleJoint one end near the first blank flange, and the axis collinear of transition ring and FlexbleJoint, FlexbleJoint is fixedly connected with interior pipe by transition ring.As a kind of implementation, be set to transition ring and coordinate with interior ligament, gap is no more than 0.2mm, and both structural types of being welded to connect.
For ease of fixing relative to FlexbleJoint position of sliding sleeve, described FlexbleJoint is also provided with jump ring in the endoporus of one end of the second blank flange, and described sliding sleeve limits the relative position of itself and FlexbleJoint by jump ring.Above jump ring is circlip for hole, and can be set to jump ring is two, and sliding sleeve is fixed between two jump rings, or by the endoporus of FlexbleJoint is set to step hole, by a jump ring, by sliding sleeve, the structural type be fixed in step hole is realized.
The utility model has following beneficial effect:
In the utility model, the interior pipe arranged is as the runner of cold fluid, space between outer tube and interior pipe is used for arranging thermal-protective coating and FlexbleJoint, in above structure, because FlexbleJoint is not re-used as the linkage section of pipe in two sections, interior pipe is like this weldless tube of equal wall thickness, eliminate existing vacuum tube exist liquid by interior pipe time, the situation such as friction, collision that interior pipe and FlexbleJoint tie point place exist, particularly when fluid high-speed flows, the structure that the utility model provides is appointed fluid so can be made to smoothly pass; When fluid flows through that in interior pipe, pipe shrinks distortion, because interior pipe is fixedly connected with the first blank flange, the two ends of FlexbleJoint are individually fixed on interior pipe and the second blank flange, ripple compensation have a high regard for so can resiliently deformable compensate in the contraction of pipe, avoid the Joint failure of inner and outer tubes and affect the vacuum state of interlayer between the two; In this structure, be convenient to adopt tradition to implement conveniently and seal to be welded to connect means of fixation reliably, for fixing FlexbleJoint and interior pipe and the second blank flange, the first blank flange and outer tube, keep to realize the excellent degree of vacuum of interlayer, the molten bath be more than welded to connect is owing to being positioned at the outer wall of pipe, therefore be welded to connect the heat affecting of inner tube material little, ensure that the planarization of inner tube material performance and inner tube wall, further extend the working life of interior pipe.
Namely this structure not only make FlexbleJoint in vacuum tube can play good interior tubular axis upwards deformation-compensated, keep the good heat-insulating property of vacuum tube, also make fluid can by steadily flowing through in this structure and making vacuum tube have good working life and Safety performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of vacuum tube in prior art;
Fig. 2 is the structural representation of a kind of vacuum tube structure described in the utility model specific embodiment.
Numbering in figure is followed successively by: 1, interior pipe, the 2, first blank flange, and 3, outer tube, 4, transition ring, 5, FlexbleJoint, the 6, second blank flange, 7, sliding sleeve, 8, jump ring.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but structure of the present utility model is not limited only to following examples.
Embodiment 1:
As Fig. 2, a kind of vacuum tube structure, the interior pipe 1 comprising outer tube 3 and be arranged in outer tube 3, the two ends of outer tube 3 are also respectively arranged with the first blank flange 2 and the second blank flange 6, described first blank flange 2 and the second blank flange 6 are provided with the through hole passed for interior pipe 1, also comprise FlexbleJoint 5, described FlexbleJoint 5 is sheathed on outside interior pipe 1, and FlexbleJoint 5 is arranged in outer tube 3, described first blank flange 2 is fixedly connected with the outer wall of interior pipe 1, the outer wall of FlexbleJoint 5 near one end of the first blank flange 2 with interior pipe 1 is fixedly connected with, the other end of FlexbleJoint 5 is fixedly connected on the second blank flange 6.
In the present embodiment, the interior pipe 1 arranged is as the runner of cold fluid, space between outer tube 3 and interior pipe 1 is used for arranging thermal-protective coating and FlexbleJoint 5, in above structure, because FlexbleJoint 5 is not re-used as the linkage section of pipe 1 in two sections, interior pipe 1 is like this weldless tube of equal wall thickness, eliminate existing vacuum tube exist liquid by interior pipe 1 time, the situation such as friction, collision that interior pipe 1 exists with FlexbleJoint 5 tie point place, particularly when fluid high-speed flows, the structure that the utility model provides is appointed fluid so can be made to smoothly pass; When fluid flows through interior pipe 1, interior pipe 1 shrinks distortion, because interior pipe 1 is fixedly connected with the first blank flange 2, the two ends of FlexbleJoint 5 are individually fixed on interior pipe 1 and the second blank flange 6, FlexbleJoint 5 so can resiliently deformable compensate in the contraction of pipe 1, avoid the Joint failure of interior pipe 1 and outer tube 3 and affect the vacuum state of interlayer between the two; In this structure, be convenient to adopt tradition to implement conveniently and seal to be welded to connect means of fixation reliably, for fixing FlexbleJoint 5 and interior pipe 1 and the second blank flange 6, first blank flange 2 and outer tube 3, keep to realize the excellent degree of vacuum of interlayer, the molten bath be more than welded to connect is owing to being positioned at the outer wall of pipe 1, therefore the heat affecting being welded to connect internal pipe 1 material is little, ensure that the planarization of interior pipe 1 material property and interior pipe 1 inwall, further extends the working life of interior pipe 1.
Embodiment 2:
As Fig. 2, the present embodiment is further qualified on the basis of embodiment 1: for keep interior pipe 1 relative to outer tube 3 position stability, reduce in pipe 1 and the first blank flange 2 tie point, FlexbleJoint 5 and interior pipe 1 and the stressed size of the second blank flange 6 tie point in process fluid flow, be beneficial to the working life of this structure, FlexbleJoint 5 is also provided with sliding sleeve 7 near between one end and the gap of interior pipe 1 of the second blank flange 6.Can adopt as the form such as sliding bearing, bearing shell with upper sliding sleeve 7.
As a kind ofly drawing materials conveniently, having, certain flexibility to flow the vibrations brought, sliding sleeve 7 material with good self-lubricating property to adapt to fluid, and described sliding sleeve 7 is the teflon collar.
For reducing the pressure size between sliding sleeve 7 and interior pipe 1 on surface of contact, by the structural type arranging longer with the surface of contact of interior pipe 1 by sliding sleeve 7, the length being set to described sliding sleeve 7 is not less than 5cm.
Embodiment 3:
As Fig. 2, the present embodiment is further qualified on the basis of embodiment 1: the coaxality for the benefit of keeping FlexbleJoint 5 and interior pipe 1, the uniformity being beneficial to FlexbleJoint 5 distortion is beneficial to the life-span of FlexbleJoint 5, also comprise the transition ring 4 that length is not less than 2cm, described transition ring 4 is fixed on FlexbleJoint 5 one end near the first blank flange 2, and the axis collinear of transition ring 4 and both FlexbleJoints 5, FlexbleJoint 5 is fixedly connected with interior pipe 1 by transition ring 4.As a kind of implementation, be set to transition ring 4 and interior pipe 1 Spielpassung, gap is no more than 0.2mm, and both structural types of being welded to connect.
For ease of fixing relative to FlexbleJoint 5 position of sliding sleeve 7, described FlexbleJoint 5 is also provided with jump ring 8 in the endoporus of one end of the second blank flange 6, and described sliding sleeve 7 limits the relative position of itself and FlexbleJoint 5 by jump ring 8.Above jump ring 8 is circlip for hole, can be set to jump ring 8 is two, sliding sleeve 7 is fixed between two jump rings 8, or by the endoporus of FlexbleJoint 5 is set to step hole, the structural type that sliding sleeve 7 is fixed in step hole is realized by a jump ring 8.
Above content is the further description done the utility model in conjunction with concrete preferred implementation, can not assert that embodiment of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, not departing from other mode of executions drawn under the technical solution of the utility model, all should be included in protection domain of the present utility model.
Claims (6)
1. a vacuum tube structure, comprise outer tube (3) and be arranged in the interior pipe (1) in outer tube (3), the two ends of outer tube (3) are also respectively arranged with the first blank flange (2) and the second blank flange (6), described first blank flange (2) and the second blank flange (6) are provided with the through hole passed for interior pipe (1), it is characterized in that, also comprise FlexbleJoint (5), described FlexbleJoint (5) is sheathed on interior pipe (1) outward, and FlexbleJoint (5) is arranged in outer tube (3), described first blank flange (2) is fixedly connected with the outer wall of interior pipe (1), FlexbleJoint (5) is fixedly connected with the outer wall of interior pipe (1) near one end of the first blank flange (2), the other end of FlexbleJoint (5) is fixedly connected on the second blank flange (6).
2. a kind of vacuum tube structure according to claim 1, is characterized in that, FlexbleJoint (5) is also provided with sliding sleeve (7) near between one end and the gap of interior pipe (1) of the second blank flange (6).
3. a kind of vacuum tube structure according to claim 2, is characterized in that, described sliding sleeve (7) is the teflon collar.
4. a kind of vacuum tube structure according to claim 2, it is characterized in that, described FlexbleJoint (5) is also provided with jump ring (8) in the endoporus of one end of the second blank flange (6), and described sliding sleeve (7) limits the relative position of itself and FlexbleJoint (5) by jump ring (8).
5. according to a kind of vacuum tube structure in claim 2 to 4 described in any one, it is characterized in that, the length of described sliding sleeve (7) is not less than 5cm.
6. a kind of vacuum tube structure according to claim 1, it is characterized in that, also comprise the transition ring (4) that length is not less than 2cm, described transition ring (4) is fixed on FlexbleJoint (5) one end near the first blank flange (2), and transition ring (4) and FlexbleJoint (5) both axis collinear, FlexbleJoint (5) is fixedly connected with interior pipe (1) by transition ring (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520310935.XU CN204592716U (en) | 2015-05-15 | 2015-05-15 | A kind of vacuum tube structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520310935.XU CN204592716U (en) | 2015-05-15 | 2015-05-15 | A kind of vacuum tube structure |
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| Publication Number | Publication Date |
|---|---|
| CN204592716U true CN204592716U (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520310935.XU Active CN204592716U (en) | 2015-05-15 | 2015-05-15 | A kind of vacuum tube structure |
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| Country | Link |
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| CN (1) | CN204592716U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848003A (en) * | 2015-05-15 | 2015-08-19 | 四川华气清源科技有限公司 | Vacuum tube structure and low temperature pipeline adopting same |
| CN108825915A (en) * | 2018-07-22 | 2018-11-16 | 江苏万兴石油装备有限公司 | A kind of novel heat insulation portable activity pipeline |
-
2015
- 2015-05-15 CN CN201520310935.XU patent/CN204592716U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848003A (en) * | 2015-05-15 | 2015-08-19 | 四川华气清源科技有限公司 | Vacuum tube structure and low temperature pipeline adopting same |
| CN108825915A (en) * | 2018-07-22 | 2018-11-16 | 江苏万兴石油装备有限公司 | A kind of novel heat insulation portable activity pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No.7, Section 2, Tengfei Avenue, renshoushigao Economic Development Zone, Tianfu New District, Chengdu, Sichuan 610000 Patentee after: Sichuan Huaqi Qingyuan Technology Co.,Ltd. Address before: 610000 No. 139, building 10, Qingjiang Road, Shuangliu Park, Jiaolong industrial port, Chengdu, Sichuan Patentee before: SICHUAN HUAQI QINGYUAN SCIENCE AND TECHNOLOGY CO.,LTD. |
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| CP03 | Change of name, title or address |