CN216813452U - Fully-sealed direct-buried steam heat-insulation pipe - Google Patents
Fully-sealed direct-buried steam heat-insulation pipe Download PDFInfo
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- CN216813452U CN216813452U CN202220116748.8U CN202220116748U CN216813452U CN 216813452 U CN216813452 U CN 216813452U CN 202220116748 U CN202220116748 U CN 202220116748U CN 216813452 U CN216813452 U CN 216813452U
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- shell
- steam
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- 238000009413 insulation Methods 0.000 title description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 79
- 239000010959 steel Substances 0.000 claims abstract description 79
- 238000004321 preservation Methods 0.000 claims abstract description 41
- 239000010410 layer Substances 0.000 claims description 57
- 238000007789 sealing Methods 0.000 claims description 42
- 239000012791 sliding layer Substances 0.000 claims description 9
- 238000012946 outsourcing Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 9
- 229920000742 Cotton Polymers 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 239000003292 glue Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model relates to a field of heating power pipe network discloses a totally enclosed direct-burried steam insulating tube, and its structure includes interior steam pipe, and the cover is equipped with interior steel cylinder on the interior steam pipe, and the cover is equipped with the shell on the interior steel cylinder, and both ends between interior steel cylinder and the shell all are fixed with sealed heat preservation support, form sealed chamber between interior steel cylinder, shell and the sealed heat preservation support, and sealed intracavity is provided with interior heat preservation. During the heat preservation in can effectively avoiding during the work progress rainwater to ooze into, the use quality after the heat supply network is laid is ensured to this application.
Description
Technical Field
The application relates to the field of heating power pipe networks, in particular to a fully-sealed direct-buried steam heat-preservation pipe.
Background
The factory prefabricated direct-buried laying steam heat-insulation pipeline is mainly made of heat-insulation cotton, and is simple in processing and manufacturing method, low in cost, easy to obtain materials and good in heat-insulation performance theoretically, and can be widely applied to municipal heat supply pipe network construction.
The structure of the existing steam heat-insulation pipeline is shown in figure 1 and comprises an inner steam pipe 1 and a shell 2, an inner heat-insulation layer 3 is filled between the inner steam pipe 1 and the shell 2, the inner heat-insulation layer 3 is heat-insulation cotton with a fluffy structure, in order to relatively fix the shell 2 and the inner steam pipe 1, two ends of a single-section prefabricated steam heat-insulation pipeline are both fixed with a support 4, in the heat supply network building process, a plurality of sections of prefabricated steam heat-insulation pipelines are firstly erected in a pipe ditch, and then the inner steam pipe 1 and the shell 2 of adjacent sections are coaxially welded.
However, in engineering application, the condition is not good as expected, in the process of building the heat supply network, rain causes water accumulation in a pipe ditch, the water accumulation in the ditch enters between the shell 2 and the inner steam pipe 1, glass cotton, aluminum silicate cotton or rock wool is very easy to absorb water, the heat insulation cotton felt deforms and deteriorates after absorbing water, the heat insulation performance is obviously reduced, the situation is more serious, the heat insulation material can fall off, the heat insulation function is completely lost, meanwhile, once water enters between the shell 2 and the inner steam pipe 1, the inner wall of the shell 2 is easy to corrode, the corrosion process from the inner surface to the outer surface is generated for seven years and eight years more, the corrosion process from the inner surface to the outer surface is generated for two years and three years less, and the service life of the steam pipe network is greatly shortened.
SUMMERY OF THE UTILITY MODEL
In order to improve prefabricated direct-burried steam insulation pipeline's waterproof performance, this application provides a totally enclosed direct-burried steam insulating tube.
The application provides a totally enclosed direct-burried steam insulating tube adopts following technical scheme:
the utility model provides a totally enclosed direct-burried steam insulating tube, includes interior steam pipe, the cover is equipped with interior steel cylinder on the interior steam pipe, the cover is equipped with the shell on the interior steel cylinder, interior steel cylinder with both ends between the shell all are fixed with sealed heat preservation support, interior steel cylinder the shell with form sealed chamber between the sealed heat preservation support, sealed intracavity is provided with interior heat preservation.
By adopting the technical scheme, the inner heat-insulating layer is arranged in the sealing cavity, so that rainwater in the ditch is effectively prevented from permeating and being absorbed by the inner heat-insulating layer in the field construction process, and the adverse influence of the field construction environment on the laying quality of the heat supply network is reduced; in addition, the two ends between the inner steel cylinder and the shell are sealed by the sealing heat-insulating support, so that a heat bridge is effectively avoided, and the heat efficiency of heat supply network conveying is ensured.
Preferably, the sealed heat preservation support is located including the cover heat preservation tile ring on the interior steel cylinder, heat preservation tile ring inner wall is provided with and is used for sealing connection the first sealing connection layer of interior steel cylinder, heat preservation tile ring outer wall is provided with and is used for sealing connection the second sealing connection layer of shell.
Through adopting above-mentioned technical scheme, the heat preservation tile ring is sealed fixed between steel cylinder and shell including through first sealing connection layer, the sealing connection layer of second, plays support and heat retaining effect.
Preferably, the second sealing connection layer including coat in the cementing layer of heat preservation tile ring outer wall week side, the cementing layer outsourcing is equipped with outer steel ring, outer steel ring with the shell is sealed fixed.
By adopting the technical scheme, the outer steel ring is fixed on the heat-insulating tile ring by the cementing layer and is used as a transition layer, so that the heat-insulating tile ring and the shell are conveniently welded and fixed in a sealing manner by a welding process in the follow-up process.
Preferably, a sliding layer which is convenient for the inner steam pipe to slide relative to the inner steel cylinder is arranged between the inner steam pipe and the inner steel cylinder.
Through adopting above-mentioned technical scheme, set up the sliding layer, reduce the direct contact between interior steam pipe and the interior steel cylinder to when reducing interior steam pipe thermal energy sliding resistance, reduce the heat waste that the heat supply network carried.
Preferably, the sliding layer comprises a cushion layer fixed on the inner wall of the inner steel cylinder, and a ball is embedded in one side, close to the inner steam pipe, of the cushion layer.
Through adopting above-mentioned technical scheme, cooperation ball further reduces the direct contact between interior steam pipe and the interior steel cylinder to reduce the gliding resistance of interior steam pipe and reduce the heat waste that the heat supply network used.
Preferably, the cross section of the cushion layer is in a circular arc section shape, and the cushion layer is arranged at the bottom between the inner steam pipe and the inner steel cylinder.
Through adopting above-mentioned technical scheme, the bed course plays the effect of supporting interior steam pipe, simultaneously, only including the bottom between steam pipe and the interior steel cylinder sets up the bed course, further reduces the direct contact between interior steam pipe and the interior steel cylinder, reduces the heat waste that the heat supply network was in service.
Preferably, the inner steel cylinder is a plug sleeve.
By adopting the technical scheme, the inner steel cylinder is close to the inner steam pipe, and the heated elongation amount completes the length compensation through the telescopic movement of the plug-in sleeve.
Preferably, the inner steel cylinder comprises an inner cylinder and an outer cylinder sleeved on the inner cylinder in a sliding manner, and an outer sliding sleeve sleeved on the outer cylinder in a sliding manner is fixed on the outer wall of one end, close to the outer cylinder, of the inner cylinder.
By adopting the technical scheme, the outer barrel is inserted between the outer sliding sleeve and the inner barrel, so that the sealing property in the sealing cavity is ensured.
Preferably, disposable sealing belts are arranged at two ends between the inner steel cylinder and the inner steam pipe in the circumferential direction.
Through adopting above-mentioned technical scheme, disposable sealing strip is used for the position of the relative heat preservation tile ring of steam pipe in the temporary fixation on the one hand, and the steel cylinder slides including the interior steam pipe in avoiding the transportation, and on the other hand still is used for avoiding in the transportation rainwater infiltration to between interior steel cylinder and the interior steam pipe, when laying, needs cut disposable sealing strip off.
In summary, the present application includes at least one of the following beneficial technical effects:
by arranging the sealing cavity between the inner steam pipe and the outer shell and arranging the inner heat-insulating layer in the sealing cavity, water in the ditch is prevented from permeating into the inner heat-insulating layer in the field construction process, and the use quality of the built heat supply network is ensured;
the sliding layer is arranged between the inner steam pipe and the inner steel cylinder, so that the contact area between the inner steam pipe and the inner steel cylinder is reduced, and the heat loss caused by the heat conduction of the inner steam pipe is reduced while the thermal expansion sliding resistance of the inner steam pipe is reduced;
the inner steel cylinder is set to be a plug-in sleeve, the heat-insulating tile ring and the outer steel ring at two ends are sequentially manufactured, and the fully-sealed direct-buried steam heat-insulating pipe with the sealed inner heat-insulating layer is manufactured technically.
Drawings
Fig. 1 is a schematic structural view of a conventional steam insulation pipeline.
Fig. 2 is a schematic structural diagram of a fully-sealed directly-buried steam insulation pipe according to an embodiment of the present application.
Description of reference numerals: 1. an inner steam pipe; 2. a housing; 3. an inner insulating layer; 4. a support; 5. an inner steel cylinder; 6. a heat preservation tile ring; 7. a first sealing connection layer; 8. an outer steel ring; 9. a cementing layer; 10. a cushion layer; 11. a ball bearing; 12. an inner barrel; 13. an outer cylinder; 14. an outer sliding sleeve; 15. and (5) sealing the tape for one time.
Detailed Description
The present application is described in further detail below with reference to fig. 2.
The embodiment of the application discloses a totally enclosed direct-burried steam insulating tube.
Referring to fig. 2, a totally enclosed direct-burried steam insulating tube, including interior steam pipe 1, coaxial cover is equipped with interior steel cylinder 5 on the interior steam pipe 1, the cover is equipped with shell 2 on the interior steel cylinder 5, both ends between interior steel cylinder 5 and the shell 2 all are fixed with sealed heat preservation support, interior steel cylinder 5, form sealed chamber between shell 2 and the sealed heat preservation support, interior heat preservation 3 is installed to the sealed intracavity, interior heat preservation 3 adopts the cotton felt that keeps warm, the cotton felt that keeps warm has high price/performance ratio as insulation material, this application is through setting up sealed chamber at shell 2 inner wall, utilize sealed chamber to hold interior heat preservation 3, lay the in-process of burying steam insulating tube at the scene, guarantee that the rainwater among the construction environment can't permeate to interior heat preservation 3, thereby effectively avoid the condition emergence of hot net internal corrosion and the cotton felt that keeps warm, guarantee that the steam pipe network builds the use quality after laying.
Sealed heat preservation support locates heat preservation tile ring 6 on the interior steel cylinder 5 including the cover, adopt heat preservation tile ring 6 to be used for avoiding forming the heat bridge between interior steam pipe 1 and the shell 2, cause thermal loss, the coating of the 6 inner walls of heat preservation tile ring has first sealing connection layer 7 that is used for steel cylinder 5 in the sealing connection, first sealing connection layer 7 is sealed glue for high temperature resistant, heat preservation tile ring 6 outer wall is provided with the second sealing connection layer that is used for sealing connection shell 2, utilize first sealing connection layer 7 and second sealing connection layer to fix heat preservation tile ring 6 at the tip between shell 2 and interior steam pipe 1, ensure that external rainwater can't permeate to sealed intracavity.
Receive the restriction of technology, heat preservation tile ring 6's outer wall is not convenient for seal glue and shell 2 sealing connection through the coating, so the second sealing connection layer is including coating in the cementing layer 9 of heat preservation tile ring 6 outer wall week side, cementing layer 9 is solidified by sealed glue and is formed, cementing layer 9 outsourcing is equipped with outer steel ring 8, outer steel ring 8 keeps away from between the one end of interior heat preservation 3 and the shell 2 circumference sealing weld fixation, utilize outer steel ring 8 as a transition layer promptly, realize the sealing connection between heat preservation tile ring 6 and the shell 2.
A sliding layer which is convenient for the inner steam pipe 1 to slide relative to the inner steel cylinder 5 is arranged between the inner steam pipe 1 and the inner steel cylinder 5, the sliding layer comprises a cushion layer 10 which is fixed on the inner wall of the inner steel cylinder 5, and a ball 11 is embedded on one side of the cushion layer 10, which is close to the inner steam pipe 1. Through the arrangement of the sliding layer, the contact area between the inner steam pipe 1 and the inner steel cylinder 5 is reduced, the resistance of the relative sliding between the inner steam pipe 1 and the inner steel cylinder 5 is reduced, and the thermal expansion and the expansion of the inner steam pipe 1 in the inner steel cylinder 5 are facilitated; secondly, because the sliding layer is arranged between the inner steam pipe 1 and the inner steel cylinder 5, the direct contact between the inner steam pipe 1 and the inner steel cylinder 5 is reduced, an air layer with small width is formed, and the heat loss of the inner steam pipe 1 is greatly reduced. The ball 11 is embedded, so that the resistance of the thermal expansion and contraction movement of the inner steam pipe 1 and the contact area between the inner steam pipe 1 and the inner steel cylinder 5 are further reduced, and the heat loss is reduced.
The cross section of the cushion layer 10 is in the shape of a circular arc segment, the cushion layer 10 is located at the bottom between the inner steam pipe 1 and the inner steel cylinder 5, and the cushion layer 10 is only arranged at the bottom in order to further reduce the contact between the inner steam pipe 1 and the inner steel cylinder 5 because the application scene is a buried pipe and the inner steam pipe 1 is supported by the bottom of the inner wall of the inner steel cylinder 5 in use. The central angle of the cushion layer 10 is 150 degrees to 20 degrees, and on the premise that the supporting strength is met, the cushion layer 10 is better in smaller central angle, so that the direct contact area between the cushion layer 10 and the inner steam pipe 1 is reduced, and the cushion layer 10 can be fixed in the inner steel cylinder 5 in the production process.
Similarly, the production process is limited, and in order to smoothly sleeve the outer shell 2 on the inner heat-insulating layer 3, the inner heat-insulating layer 3 needs to be wound and contracted by using a ribbon, so that the outer shell 2 is conveniently sleeved on the inner heat-insulating layer 3, but if the heat-insulating tile rings 6 at the two ends are manufactured firstly, the ribbon cannot be drawn out. Therefore, the inner steel cylinder 5 is a plug sleeve, length compensation after the inner steel cylinder 5 is heated and extended is achieved by utilizing telescopic sliding of the plug sleeve, the inner steel cylinder 5 comprises an inner cylinder 12 and an outer cylinder 13, the outer cylinder is sleeved on the inner cylinder 12 in a sliding mode, when the plug sleeve is used, the heat insulation tile ring 6 at one end is fixed with the shell 2, then the shell 2 slides to expose the other end of the inner steel cylinder 5, the sliding shell 2 resets after the heat insulation tile ring 6 at the other end is manufactured, finally the heat insulation tile ring 6 at the other end is fixed with the shell 2 in a sealing mode, the outer wall of one end, close to the outer cylinder 13, of the inner cylinder 12 is fixed with the outer sliding sleeve 14, the outer sliding sleeve is sleeved on the outer cylinder 13 in a sliding mode, then one end of the outer cylinder 13 is inserted between the outer sliding sleeve 14 and the inner cylinder 12, and the sealing performance of a sealing cavity is further guaranteed. Seal glue is beaten to both ends circumference between interior steel cylinder 5 and the interior steam pipe 1, seals and forms disposable sealing strip 15 after solidifying, through setting up disposable sealing strip 15, is used for the position of steam pipe 1 relative heat preservation tile ring 6 in the temporary fixation on the one hand, and the interior steam pipe 1 slides in the steel cylinder 5 including avoiding in the transportation, and on the other hand still is arranged in avoiding in the transportation rainwater to permeate to between interior steel cylinder 5 and the interior steam pipe 1, when laying, cuts disposable sealing strip 15 again.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The utility model provides a totally enclosed direct-burried steam insulating tube which characterized in that: including interior steam pipe (1), the cover is equipped with interior steel cylinder (5) on interior steam pipe (1), the cover is equipped with shell (2) on interior steel cylinder (5), interior steel cylinder (5) with both ends between shell (2) all are fixed with sealed heat preservation support, interior steel cylinder (5) shell (2) with form sealed chamber between the sealed heat preservation support, be provided with interior heat preservation (3) in the sealed intracavity.
2. The totally enclosed, directly buried steam insulating pipe according to claim 1, characterized in that: sealed heat preservation support is located including the cover heat preservation tile ring (6) on interior steel cylinder (5), heat preservation tile ring (6) inner wall is provided with and is used for sealing connection first sealing connection layer (7) of interior steel cylinder (5), heat preservation tile ring (6) outer wall is provided with and is used for sealing connection the second sealing connection layer of shell (2).
3. The totally enclosed, directly buried steam insulating pipe according to claim 2, characterized in that: the second sealing connection layer including coat in the cementing layer (9) of heat preservation tile ring (6) outer wall week side, cementing layer (9) outsourcing is equipped with outer steel ring (8), outer steel ring (8) with shell (2) are sealed fixed.
4. The totally enclosed, directly buried steam insulating pipe according to claim 1 or 2, characterized in that: a sliding layer which is convenient for the inner steam pipe (1) to slide relative to the inner steel cylinder (5) is arranged between the inner steam pipe (1) and the inner steel cylinder (5).
5. The totally enclosed, directly buried steam insulating pipe according to claim 4, characterized in that: the slippage layer comprises a cushion layer (10) fixed on the inner wall of the inner steel cylinder (5), and balls (11) are embedded in one side, close to the inner steam pipe (1), of the cushion layer (10).
6. The totally enclosed, directly buried steam insulating pipe according to claim 5, characterized in that: the cross section of the cushion layer (10) is in a circular arc section shape, and the cushion layer (10) is arranged at the bottom between the inner steam pipe (1) and the inner steel cylinder (5).
7. The totally enclosed, directly buried steam insulating pipe according to claim 1 or 2, characterized in that: the inner steel cylinder (5) is an inserting sleeve.
8. The totally enclosed, directly buried steam insulating pipe according to claim 7, characterized in that: interior steel cylinder (5) include inner tube (12) and slide the cover and establish urceolus (13) on inner tube (12), inner tube (12) are close to the one end outer wall of urceolus (13) is fixed with to slide the cover and locates outer sliding sleeve (14) on urceolus (13).
9. The totally enclosed, directly buried steam insulating pipe according to claim 1, characterized in that: disposable sealing belts (15) are arranged at the two ends between the inner steel cylinder (5) and the inner steam pipe (1) in the circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220116748.8U CN216813452U (en) | 2022-01-17 | 2022-01-17 | Fully-sealed direct-buried steam heat-insulation pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220116748.8U CN216813452U (en) | 2022-01-17 | 2022-01-17 | Fully-sealed direct-buried steam heat-insulation pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216813452U true CN216813452U (en) | 2022-06-24 |
Family
ID=82064710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220116748.8U Active CN216813452U (en) | 2022-01-17 | 2022-01-17 | Fully-sealed direct-buried steam heat-insulation pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216813452U (en) |
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2022
- 2022-01-17 CN CN202220116748.8U patent/CN216813452U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shanghai Luxie New Material Technology Co.,Ltd. Assignor: SHANGHAI KEHUA THERMAL PIPE SYSTEM Co.,Ltd. Contract record no.: X2023980051264 Denomination of utility model: A fully sealed buried steam insulation pipe Granted publication date: 20220624 License type: Common License Record date: 20231211 |