CN217208416U - Large-caliber safe energy-saving spraying prefabricated direct-buried heat-insulation pipe - Google Patents
Large-caliber safe energy-saving spraying prefabricated direct-buried heat-insulation pipe Download PDFInfo
- Publication number
- CN217208416U CN217208416U CN202221036382.XU CN202221036382U CN217208416U CN 217208416 U CN217208416 U CN 217208416U CN 202221036382 U CN202221036382 U CN 202221036382U CN 217208416 U CN217208416 U CN 217208416U
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- Prior art keywords
- pipe
- heat
- inner pipe
- arc
- outer pipe
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- 238000009413 insulation Methods 0.000 title claims abstract description 49
- 238000005507 spraying Methods 0.000 title abstract description 5
- 239000010410 layer Substances 0.000 claims abstract description 27
- 239000011241 protective layer Substances 0.000 claims abstract description 7
- 229920002635 polyurethane Polymers 0.000 claims abstract description 5
- 239000004814 polyurethane Substances 0.000 claims abstract description 5
- 239000010426 asphalt Substances 0.000 claims description 6
- 239000012774 insulation material Substances 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000011094 fiberboard Substances 0.000 claims description 3
- 238000009933 burial Methods 0.000 claims 1
- 239000002689 soil Substances 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 abstract description 3
- 238000010168 coupling process Methods 0.000 abstract description 3
- 238000005859 coupling reaction Methods 0.000 abstract description 3
- 238000004321 preservation Methods 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 239000004429 Calibre Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Thermal Insulation (AREA)
Abstract
The utility model discloses a large-caliber safe and energy-saving spray-coating prefabricated direct-buried heat preservation pipe, which comprises an inner pipe, a polyurethane heat-insulation layer, an outer pipe and a protective layer, wherein a heat-insulation connecting assembly is arranged between the inner pipe and the outer pipe, the heat-insulation connecting assembly comprises an axial connecting piece and a radial connecting piece, both the axial connecting piece and the radial connecting piece comprise an inner pipe and an outer pipe, one end of the inner pipe is welded on the inner pipe, the other end of the inner pipe is welded with an arc-shaped plate, one end of the outer pipe is welded on the outer pipe, the other end of the outer pipe is also welded with an arc-shaped plate, a heat-insulation expansion piece is arranged between the two arc-shaped plates in a matching way, and both the inner pipe and the outer pipe in the axial connecting piece are L-shaped; the utility model provides an inner tube and outer tube link to each other through thermal-insulated coupling assembling, still can not form "heat bridge" between inner tube and outer tube under the axial of effective spacing inner tube and outer tube and the radial relative displacement's the condition, have avoided the steam heat to pass through during the outer tube loss arrives the soil layer, very energy-conserving high-efficient.
Description
Technical Field
The utility model relates to a heat preservation steam conduit field, concretely relates to prefabricated direct-burried insulating tube of heavy-calibre safe energy-saving spraying.
Background
As is well known, the direct-burried insulating tube is often used in city central heating engineering, its bore is great usually, current direct-burried insulating tube is by the inner tube, the outer tube comprises the polyurethane insulating layer of packing between inner tube and outer tube, because the reason of processing restriction and later stage tube coupling demand, so the inner tube of the direct-burried insulating tube when dispatching from the factory is longer than the outer tube slightly, through simple connection steel pipe welded fastening between inner tube and the outer tube, the problem that from this brings is exactly that can form "heat bridge" between inner tube and the outer tube, the heat of inner tube can be passed through the connection steel pipe and is transmitted the outer tube then the loss to the soil layer during steam conveying, cause the heat preservation efficiency reduction of direct-burried insulating tube, be unfavorable for reaching energy-conserving purpose.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the background art, the utility model aims to provide a prefabricated direct-burried insulating tube of heavy-calibre safety and energy saving type spraying, it has effectively solved the problem that exists among the background art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the large-caliber safe energy-saving spray-prefabricated direct-buried heat-insulation pipe comprises an inner pipe, a polyurethane heat-insulation layer, an outer pipe and a protective layer which are sequentially arranged from inside to outside, wherein two heat-insulation connecting assemblies are arranged between the inner pipe and the outer pipe in a matched mode, the two heat-insulation connecting assemblies are respectively close to two ends of the outer pipe, each heat-insulation connecting assembly comprises at least one axial connecting piece and a plurality of radial connecting pieces which are uniformly distributed along the circumferential direction of the cross section of the inner pipe, each axial connecting piece and each radial connecting piece comprises an inner pipe and an outer pipe, one end of each inner pipe is welded on the inner pipe, the other end of each inner pipe is welded with an arc-shaped plate, one end of each outer pipe is welded on the outer pipe, the other end of each outer pipe is also welded with an arc-shaped plate, a heat-insulation expansion piece is arranged between the two arc-shaped plates in a matched mode, and the inner pipe and the outer pipe in each axial connecting piece are L-shaped;
the heat-insulating expansion piece comprises a first heat-insulating sleeve and a second heat-insulating sleeve, wherein the first heat-insulating sleeve is arranged on the inner side pipe arc plate in a matching mode, the second heat-insulating sleeve is arranged on the outer side pipe arc plate in a matching mode, a driving screw is connected between the first heat-insulating sleeve and the second heat-insulating sleeve in a matching and screwed mode, and a screwing portion is coaxially and fixedly arranged on the driving screw.
Furthermore, the first heat insulation sleeve and the second heat insulation sleeve are respectively provided with an auxiliary heat insulation material layer matched with the arc-shaped plate.
Furthermore, the auxiliary heat insulation material layer is made of a ceramic fiber board.
Furthermore, the first heat insulation sleeve and the second heat insulation sleeve are both made of PA 66.
Further, the screwing part is in a nut shape.
Furthermore, the protective layer includes a plurality of pitch layers that from inside to outside set gradually, is provided with the glass fiber cloth layer between the adjacent pitch layer.
The utility model discloses following beneficial technological effect has:
the utility model provides an inner tube and outer tube link to each other through thermal-insulated coupling assembling, still can not form "heat bridge" between inner tube and outer tube under the axial of effective spacing inner tube and outer tube and the radial relative displacement's the condition, have avoided the steam heat to pass through during the outer tube loss arrives the soil layer, very energy-conserving high-efficient.
Drawings
Fig. 1 is a front view of an embodiment of the present invention;
FIG. 2 is a sectional view taken along line A-A in FIG. 1;
fig. 3 is a partial enlarged view of fig. 2 at B.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the drawings and examples. The following examples are provided to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplified description, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and operate, and therefore should not be construed as limiting the invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-3, the large-caliber safe and energy-saving spray-fabricated direct-buried thermal insulation pipe described in this embodiment includes an inner pipe 1, a polyurethane thermal insulation layer 2, an outer pipe 3 and a protective layer 4, which are sequentially disposed from inside to outside, the diameter of the inner pipe 1 is not less than 100mm, two thermal insulation connection assemblies are disposed between the inner pipe 1 and the outer pipe 3 in a matching manner, the two thermal insulation connection assemblies are respectively close to two ends of the outer pipe 3, each thermal insulation connection assembly includes at least one axial connection member 5 and a plurality of radial connection members 6 uniformly distributed along the circumferential direction of the cross section of the inner pipe 1, each of the axial connection member 5 and the radial connection members 6 includes an inner pipe 7 and an outer pipe 8, one end of the inner pipe 7 is welded on the inner pipe 1, an arc plate 9 is welded on the other end, one end of the outer pipe 8 is welded on the outer pipe 3, an arc plate 9 is also welded on the other end, and a thermal insulation expansion member is disposed between the two arc plates 9 in a matching manner, the application of the arc-shaped plate 9 can disperse the stress of the heat-insulating expansion piece, so that the inner side pipe 7 and the outer side pipe 8 are prevented from easily damaging the heat-insulating expansion piece, the inner side pipe 7 and the outer side pipe 8 in the axial connecting piece 5 are both L-shaped, and the inner side pipe 7 and the outer side pipe 8 in the radial connecting piece 6 are both straight pipes;
the heat insulation expansion piece comprises a first heat insulation sleeve 10 and a second heat insulation sleeve 11, wherein the first heat insulation sleeve 10 is arranged on the arc-shaped plate 9 of the inner side pipe 7 in a matched mode, the second heat insulation sleeve 11 is arranged on the arc-shaped plate 9 of the outer side pipe 8 in a matched mode, arc-shaped grooves matched with the arc-shaped plate 9 are formed in the first heat insulation sleeve 10 and the second heat insulation sleeve 11 respectively, a driving screw 12 is connected between the first heat insulation sleeve 10 and the second heat insulation sleeve 11 in a matched and screwed mode, a screwing part 13 is coaxially and fixedly arranged on the driving screw 12, and the screwing part 13 is in a nut shape; when the drive screw 12 is screwed, the first insulating sleeve 10 and the second insulating sleeve 11 move closer to or farther away from each other, so that the thermally insulating expansion element can be tightly connected between the inner pipe 7 and the outer pipe 8.
The first heat insulation sleeve 10 and the second heat insulation sleeve 11 are respectively provided with an auxiliary heat insulation material layer 13 matched with the arc-shaped plate 9; the auxiliary heat insulation material layer 13 is made of a ceramic fiber board; the first and second heat insulating sleeves 10 and 11 are made of PA 66.
The protective layer 4 comprises a plurality of asphalt layers which are sequentially arranged from inside to outside, and a glass fiber cloth layer is arranged between every two adjacent asphalt layers, namely the asphalt layers are coated on the outer tube 3 in a brushing mode and then wrapped in the sequence of one asphalt layer of one glass fiber cloth layer.
When the inner pipe 7 and the outer pipe 8 are connected, the heat insulation expansion piece is placed between the inner pipe 7 and the outer pipe 8, and then the driving screw 12 is screwed to enable the first heat insulation sleeve 10 and the second heat insulation sleeve 11 to be respectively attached to and tightly abut against the arc-shaped plates 9 on the inner pipe 7 and the outer pipe 8; after the installation, the connection between the inner pipe 1 and the outer pipe 3 is firm, a thermal bridge cannot be formed between the inner pipe 1 and the outer pipe 3, the steam heat is prevented from dissipating to a soil layer through the outer pipe 3, and the energy conservation and the high efficiency are achieved.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (6)
1. The large-caliber safe energy-saving spray-prefabricated direct-buried heat-insulation pipe is characterized by comprising an inner pipe, a polyurethane heat-insulation layer, an outer pipe and a protective layer which are sequentially arranged from inside to outside, wherein two heat-insulation connecting assemblies are arranged between the inner pipe and the outer pipe in a matched mode and are respectively close to two ends of the outer pipe, each heat-insulation connecting assembly comprises at least one axial connecting piece and a plurality of radial connecting pieces which are uniformly distributed along the circumferential direction of the cross section of the inner pipe, each axial connecting piece and each radial connecting piece comprises an inner pipe and an outer pipe, one end of each inner pipe is welded on the inner pipe, an arc-shaped plate is welded on the other end of each inner pipe, one end of each outer pipe is welded on the outer pipe, an arc-shaped plate is also welded on the other end of each outer pipe, a heat-insulation expansion piece is arranged between the two arc-shaped plates in a matched mode, and the inner pipe and the outer pipe in each axial connecting piece are L-shaped;
the heat-insulating expansion piece comprises a first heat-insulating sleeve and a second heat-insulating sleeve, wherein the first heat-insulating sleeve is arranged on the inner side pipe arc plate in a matching mode, the second heat-insulating sleeve is arranged on the outer side pipe arc plate in a matching mode, a driving screw is connected between the first heat-insulating sleeve and the second heat-insulating sleeve in a matching and screwed mode, and a screwing portion is coaxially and fixedly arranged on the driving screw.
2. The large-caliber safe and energy-saving spray-prefabricated direct-burial thermal insulation pipe according to claim 1, wherein auxiliary thermal insulation material layers matched with the arc-shaped plates are further arranged on the first thermal insulation sleeve and the second thermal insulation sleeve respectively.
3. The large-caliber safe and energy-saving spray-prefabricated direct-buried thermal insulation pipe according to claim 2, wherein the auxiliary thermal insulation material layer is made of a ceramic fiberboard.
4. The large-caliber safe and energy-saving spray-prefabricated direct-buried thermal insulation pipe according to claim 2, wherein the first thermal insulation sleeve and the second thermal insulation sleeve are both made of PA 66.
5. The large-caliber safe and energy-saving spray-prefabricated direct-buried heat-insulating pipe according to claim 1, wherein the screwed part is in a nut shape.
6. The large-caliber safe and energy-saving spray-prefabricated direct-buried thermal insulation pipe according to any one of claims 1 to 5, wherein the protective layer comprises a plurality of asphalt layers which are arranged in sequence from inside to outside, and a glass fiber cloth layer is arranged between every two adjacent asphalt layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221036382.XU CN217208416U (en) | 2022-05-04 | 2022-05-04 | Large-caliber safe energy-saving spraying prefabricated direct-buried heat-insulation pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221036382.XU CN217208416U (en) | 2022-05-04 | 2022-05-04 | Large-caliber safe energy-saving spraying prefabricated direct-buried heat-insulation pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217208416U true CN217208416U (en) | 2022-08-16 |
Family
ID=82775860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221036382.XU Active CN217208416U (en) | 2022-05-04 | 2022-05-04 | Large-caliber safe energy-saving spraying prefabricated direct-buried heat-insulation pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217208416U (en) |
-
2022
- 2022-05-04 CN CN202221036382.XU patent/CN217208416U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Large caliber safe and energy-saving spray prefabricated buried insulation pipes Granted publication date: 20220816 Pledgee: Bank of China Limited by Share Ltd. Cangzhou branch Pledgor: Hebei Hairun pipeline Manufacturing Co.,Ltd. Registration number: Y2024980003689 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |