CN102927378A - Vacuum vertical burying heating pipe - Google Patents
Vacuum vertical burying heating pipe Download PDFInfo
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- CN102927378A CN102927378A CN201210486215XA CN201210486215A CN102927378A CN 102927378 A CN102927378 A CN 102927378A CN 201210486215X A CN201210486215X A CN 201210486215XA CN 201210486215 A CN201210486215 A CN 201210486215A CN 102927378 A CN102927378 A CN 102927378A
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- pipe
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- vacuum
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- outer pillar
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Abstract
The invention relates to a vacuum vertical burying heating pipe which comprises an operation pipe, an outer protecting pipe and a vacuum insulation layer, wherein the two ends of the outer protecting pipe are provided with variable-diameter outer protecting pipes; and the outer protecting pipe is sleeved outside the operation pipe, the variable-diameter outer protecting pipes at the two ends are fixedly connected with the outer wall of the operation pipe, so that a closed annular space is formed between the operation pipe and the outer protecting pipe, and the closed annular space is internally provided with a heat insulating material so as to form a vacuum heat insulating layer through vacuumizing. According to the invention, the two ends of the outer protecting pipe of the vacuum vertical burying heating pipe are designed into the variable-diameter outer protecting pipes, the vacuum vertical burying heating pipe is vacuumized in a factory before construction, and the vacuum vertical burying heating pipe is only needed to joint in construction in a field manner. The labor intensity is greatly reduced, the production efficiency is improved, the production quality of a steel sleeve steel vertical burying heating pipe is guaranteed, and the service cost is reduced; and the pipe diameter of the outer protecting pipe is smaller than that of the outer protecting pipe of the existing steel sleeve steel pipeline, and the manufacturing cost is reduced.
Description
Technical field
The invention belongs to the heating tube technical field, what relate generally to is a kind of vacuum direct-burried heating tube.
Background technique
At present, the known Direct-Buried Heating Pipeline that vacuumizes is first at produce in factory steel sleeve steel heat preservation pipe prefabricated (as shown in Figure 3, Figure 4), vacuumizing after construction that steel sleeve steel is heat preservation pipe prefabricated finished, namely in pipe trench, link together several steel sleeve steels are heat preservation pipe prefabricated, after first weld seam 6 welding of working pipe 1 being finished, the outer pillar 2 usefulness pipe of shielding a shortcoming or fault outward 7 is welded to connect, and outer pillar guarantees leakproofnesses by outer pillar weld seam 9.Steel sleeve steel is heat preservation pipe prefabricated in pipe trench, be welded to connect after, again thermal insulation layer 3 segmentations are vacuumized, each vacuum zone is called a closed section, the length of each closed section is generally about 300 meters.This form of construction work needs to form the annular space of sealing between working pipe and outer pillar 2, be filled with thermal insulating material and vacuumize to form vacuum heat-insulating layer 3 in the annular space of this sealing.
In addition, the Direct-Buried Heating Pipeline of this structure, when in pipe trench, constructing, if run into the rainy day, easily water inlet in the thermal insulation layer.If moisture is too large in the thermal insulation layer, just vacuumizes relatively difficulty, even can't realize vacuumizing.Because the job site condition is limited, the leakproofness of thermal insulation layer has been proposed higher requirement, if can not guarantee the leakproofness of thermal insulation layer, finally also be difficult to even can't realize vacuumizing.Have a strong impact on the quality of Direct-Buried Heating Pipeline.
We know that using the purpose of vacuum pumping technology is to increase the thermal insulation layer thermal resistance, reduces insulation layer thickness, dwindles outer pillar caliber, reduces production costs and user cost.But, because present technology can not guarantee the absolute realization that vacuumizes fully, so the insulation layer thickness of the vacuum lead of design does not reduce at present, thereby do not reach and reduce production costs and the purpose of user cost.
Summary of the invention
Therefore purpose of the present invention produces, and proposes a kind of vacuum direct-burried heating tube, solves the difficult problem that vacuumizes of existing direct-burried heating tube, has guaranteed the quality of direct-burried heating tube, simplifies installation process, effectively reduces production costs and user cost.
The present invention realizes that the technological scheme that above-mentioned purpose adopts is: described vacuum direct-burried heating tube comprises working pipe, outer pillar, vacuum heat-insulating layer, the two ends of described outer pillar are the outer pillar of reducing, outside the outer pillar suit working pipe, the outer pillar of the reducing at two ends is fixedly connected with the working pipe outer wall, between working pipe and outer pillar, form thus the annular space of sealing, in the annular space of this sealing, be provided with thermal insulating material through vacuumizing the formation vacuum heat-insulating layer.
The outer pillar of reducing of the present invention is welded to connect with outer pillar end and working pipe outer wall respectively.
The present invention is connected with FlexbleJoint in described working pipe.
The present invention is connected with pillar outside the buckle up between the pillar outside two adjacent reducings, be provided with thermal insulating material outside buckle up in the pillar, forms the buckle up thermal insulation layer.
Beneficial effect of the present invention is as follows:
The present invention can finish vacuumizing thus owing to the outer pillar two ends with the prefabricated direct-buried heating tube of steel sleeve steel are designed to the outer pillar of reducing in factory before construction, only need field joint to get final product when construction.Greatly reduce labor intensity, improved manufacturing efficiency, guarantee the quality of production of the prefabricated direct-buried heating tube of steel sleeve steel, reduced user cost.And the caliber of outer pillar is less than the outer pillar caliber of existing steel jacket pipe, has reduced cost of production.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is mounting structure schematic representation of the present invention.
Fig. 3 is the structural representation of existing direct-burried heating tube.
Fig. 4 is the mounting structure schematic representation of existing direct-burried heating tube.
Among the figure: 1, working pipe, 2, outer pillar, 3, vacuum heat-insulating layer, 4, the outer pillar of reducing, 5, FlexbleJoint, 6, the working pipe weld bond, 7, the outer pillar of buckle up, 8, the buckle up thermal insulation layer, 9, outer pillar weld seam.
Embodiment
By reference to the accompanying drawings, it is as follows to provide embodiments of the invention:
As shown in Figure 1: the described vacuum direct-burried of present embodiment heating tube comprises working pipe 1, outer pillar 2, vacuum heat-insulating layer 3, the outer pillar 4 of reducing, the two ends of outer pillar 2 are the outer pillar 4 of reducing, the outer pillar 4 of reducing can be structure as a whole also separable setting with outer pillar 2.The outer pillar 4 of reducing welds with outer pillar 2 ends and working pipe 1 outer wall respectively, between the inwall of the outer wall of working pipe 1 and outer pillar 2, form thus the annular space of sealing, thermal insulating material is installed in the annular space of this sealing and vacuumizes and form vacuum heat-insulating layer 3.Concrete mounting process is: at working pipe 1 outer wall thermal insulation layer is installed, pillar 2 outside outside thermal insulation layer, installing outside the working pipe, the outer pillar 4 of reducing at welding two ends forms the annular space of sealing between the inwall of the outer wall of working pipe 1 and outer pillar 2, enclosed space is vacuumized.Because working pipe 1 in the course of the work temperature is higher than outer pillar 2, form larger temperature stress when being discharged, being unlikely to pipeline work for the heat expansion elongation that makes working pipe, in working pipe 1 FlexbleJoint 5 is installed.
The present invention can directly be embedded in and undergroundly use as heat supply pipeline when mounted.Joint length of the present invention approximately
Be 10-25 rice.Several vacuum direct-buried insulated pipes can be welded together, its total length can be long arbitrarily.As shown in Figure 2: outside two adjacent reducings, be connected with pillar 7 outside the buckle up between the pillar 4, thermal insulating material is installed in the pillar outside buckle up, form buckle up thermal insulation layer 8.
Claims (4)
1. vacuum direct-burried heating tube, comprise working pipe (1), outer pillar (2), vacuum heat-insulating layer (3), it is characterized in that: the two ends of described outer pillar (2) are the outer pillar (4) of reducing, outside outer pillar (2) the suit working pipe (1), the outer pillar (4) of the reducing at two ends is fixedly connected with working pipe (1) outer wall, between working pipe and outer pillar, form thus the annular space of sealing, in the annular space of this sealing, be provided with thermal insulating material and form vacuum heat-insulating layer (3) through vacuumizing.
2. vacuum direct-burried heating tube according to claim 1 is characterized in that: the outer pillar (4) of described reducing is welded to connect with outer pillar (2) end and working pipe (1) outer wall respectively.
3. vacuum direct-burried heating tube according to claim 1 is characterized in that: be connected with FlexbleJoint (5) on the described working pipe (1).
4. vacuum direct-burried heating tube according to claim 1 is characterized in that: be connected with pillar outside the buckle up (7) between the pillar (4) outside two adjacent reducings, be provided with thermal insulating material in the pillar outside buckle up, form buckle up thermal insulation layer (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210486215XA CN102927378A (en) | 2012-11-26 | 2012-11-26 | Vacuum vertical burying heating pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210486215XA CN102927378A (en) | 2012-11-26 | 2012-11-26 | Vacuum vertical burying heating pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102927378A true CN102927378A (en) | 2013-02-13 |
Family
ID=47642251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210486215XA Pending CN102927378A (en) | 2012-11-26 | 2012-11-26 | Vacuum vertical burying heating pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102927378A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090682A (en) * | 2014-05-15 | 2015-11-25 | 杭州三花研究院有限公司 | Heat-insulation pipe |
| EP3009727A1 (en) * | 2014-10-16 | 2016-04-20 | Majus Limited | Pipe section |
| CN105822870A (en) * | 2015-01-04 | 2016-08-03 | 刘正彬 | Insulating pipe |
| CN106195531A (en) * | 2016-08-31 | 2016-12-07 | 宁波万里管道有限公司 | Vacuum heat-preserving tube |
| CN114017581A (en) * | 2021-11-18 | 2022-02-08 | 中国海洋石油集团有限公司 | Double-layer pipeline connecting device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3837685A (en) * | 1973-01-02 | 1974-09-24 | J Miller | Pipe expansion and repair fitting |
| CN1177699A (en) * | 1997-08-13 | 1998-04-01 | 辽河石油勘探局机械修造集团公司 | Vacuum heat-insulation oil pipe and manufacturing technology therefor |
| CN2608805Y (en) * | 2003-01-20 | 2004-03-31 | 天津大学 | Direct-buried vacuu mheat insulatnig steam pipeline compensating section |
| CN2818995Y (en) * | 2005-06-10 | 2006-09-20 | 天津市大千管业有限公司 | Impvoed disposable directly-embedded corrugated compensator |
-
2012
- 2012-11-26 CN CN201210486215XA patent/CN102927378A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3837685A (en) * | 1973-01-02 | 1974-09-24 | J Miller | Pipe expansion and repair fitting |
| CN1177699A (en) * | 1997-08-13 | 1998-04-01 | 辽河石油勘探局机械修造集团公司 | Vacuum heat-insulation oil pipe and manufacturing technology therefor |
| CN2608805Y (en) * | 2003-01-20 | 2004-03-31 | 天津大学 | Direct-buried vacuu mheat insulatnig steam pipeline compensating section |
| CN2818995Y (en) * | 2005-06-10 | 2006-09-20 | 天津市大千管业有限公司 | Impvoed disposable directly-embedded corrugated compensator |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090682A (en) * | 2014-05-15 | 2015-11-25 | 杭州三花研究院有限公司 | Heat-insulation pipe |
| EP3009727A1 (en) * | 2014-10-16 | 2016-04-20 | Majus Limited | Pipe section |
| GB2531323A (en) * | 2014-10-16 | 2016-04-20 | Majus Ltd | Pipe section |
| GB2531323B (en) * | 2014-10-16 | 2017-02-08 | Majus Ltd | Pipe section |
| US10288210B2 (en) | 2014-10-16 | 2019-05-14 | Majus Limited | Pipe section |
| CN105822870A (en) * | 2015-01-04 | 2016-08-03 | 刘正彬 | Insulating pipe |
| CN106195531A (en) * | 2016-08-31 | 2016-12-07 | 宁波万里管道有限公司 | Vacuum heat-preserving tube |
| CN114017581A (en) * | 2021-11-18 | 2022-02-08 | 中国海洋石油集团有限公司 | Double-layer pipeline connecting device |
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130213 |