CN217815732U - HN prefabricated direct-burried steam insulating tube - Google Patents
HN prefabricated direct-burried steam insulating tube Download PDFInfo
- Publication number
- CN217815732U CN217815732U CN202221800381.8U CN202221800381U CN217815732U CN 217815732 U CN217815732 U CN 217815732U CN 202221800381 U CN202221800381 U CN 202221800381U CN 217815732 U CN217815732 U CN 217815732U
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- CN
- China
- Prior art keywords
- pipe
- steel pipe
- wall
- outer protective
- prefabricated direct
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 43
- 239000010959 steel Substances 0.000 claims abstract description 43
- 230000001681 protective effect Effects 0.000 claims abstract description 39
- 229920001971 elastomer Polymers 0.000 claims abstract description 13
- 229920002635 polyurethane Polymers 0.000 claims abstract description 8
- 239000004814 polyurethane Substances 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 24
- 238000009413 insulation Methods 0.000 claims description 19
- 239000011248 coating agent Substances 0.000 claims description 17
- 238000000576 coating method Methods 0.000 claims description 17
- 239000000835 fiber Substances 0.000 claims description 8
- 239000012774 insulation material Substances 0.000 claims description 6
- 239000005995 Aluminium silicate Substances 0.000 claims description 5
- 229910000323 aluminium silicate Inorganic materials 0.000 claims description 5
- 235000012211 aluminium silicate Nutrition 0.000 claims description 5
- 239000000378 calcium silicate Substances 0.000 claims description 4
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 4
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000011888 foil Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 2
- 238000009933 burial Methods 0.000 claims 3
- PZZYQPZGQPZBDN-UHFFFAOYSA-N aluminium silicate Chemical compound O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 claims 2
- 238000005187 foaming Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000005574 cross-species transmission Effects 0.000 abstract description 3
- 230000001737 promoting effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 18
- 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 6
- 238000005260 corrosion Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to a steam insulating tube technical field discloses a prefabricated direct-burried steam insulating tube of HN, including work steel pipe and outer protecting tube, the filling hole has been seted up at outer protecting tube upper surface middle part, outer protecting tube has been cup jointed in the work steel pipe outside, work steel pipe outer wall both sides all are provided with the external screw thread, sealed dish is all installed to work steel pipe outer wall both sides. The utility model discloses a with the outside of the interface cup joint at work steel pipe soon of sealed dish middle part, clockwise rotation sealed dish, the internal thread that makes interface inner wall soon contacts with the external screw thread of work steel pipe outer wall, sealed dish removes to the opening part that is close to outer protective tube tip at clockwise pivoted in-process, sealed dish contacts the back with outer protective tube tip opening part, the opening part of sealed rubber ring external protective tube seals, avoid outer protective tube opening part to expose for a long time outside, also can avoid polyurethane foaming to fill simultaneously when, outwards spill over, be fit for extensively promoting and using.
Description
Technical Field
The utility model belongs to the technical field of steam insulating tube, specifically speaking relates to a prefabricated direct-burried steam insulating tube of HN.
Background
The prefabricated direct-buried pipelines used in the domestic heat pipe network system are all of a pipe-in-pipe structure at present, and comprise an inner working steel pipe and an outer protecting pipe, wherein a single-layer or multi-layer heat insulation material is filled between the two pipelines, and the outer protecting pipe mainly comprises a glass steel pipe or a steel pipe. Because the temperature of the conveying medium in the steam pipeline is higher than that of the hot water pipeline, the outer protecting pipe made of glass fiber reinforced plastics is gradually abandoned in a high-temperature and humid environment due to insufficient strength and rigidity and easy aging and damage, and therefore, the existing directly-buried steam heat-insulating pipe mostly adopts a steel outer protecting pipe.
However, the existing prefabricated direct-buried steam insulation pipe still has some defects in the using process, for example, the end of the gap between the working steel pipe and the outer protection pipe of the existing prefabricated direct-buried steam insulation pipe is open, and under the condition of long-time use, the material filled in the end of the existing prefabricated direct-buried steam insulation pipe is exposed in the air and is easy to damage, so that the using effect of the steam insulation pipe is affected.
In view of this, the present invention is provided.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model adopts the following basic concept:
the HN prefabricated direct-buried steam heat-insulation pipe comprises a working steel pipe and an outer protective pipe, wherein a filling hole is formed in the middle of the upper surface of the outer protective pipe, the outer protective pipe is sleeved outside the working steel pipe, external threads are arranged on two sides of the outer wall of the working steel pipe respectively, sealing discs are arranged on two sides of the outer wall of the working steel pipe respectively, a rotary joint is formed in the middle of each sealing disc, an internal thread is arranged on the inner wall of each rotary joint and is matched with the external threads of the outer wall of the working steel pipe, each sealing disc is connected with the external threads of the outer wall of the working steel pipe in a rotary mode through the internal thread of the inner wall of the rotary joint, a sealing rubber ring is arranged on one side, close to the outer protective pipe, of each sealing rubber ring, and the outer diameter of each sealing rubber ring is matched with the inner diameter of the outer protective pipe;
the outer surface of the working steel pipe is coated with an inner anti-corrosion coating, an aluminum silicate fiber felt is wound on the outer surface of the inner anti-corrosion coating, a heat insulation layer is arranged on the outer wall of the aluminum silicate fiber felt, a reflection layer is arranged on the outer wall of the heat insulation layer, a heat insulation layer is arranged on the outer wall of the reflection layer, the outer protection pipe is sleeved on the outer side of the heat insulation layer, and the outer wall of the outer protection pipe is coated with an outer anti-corrosion coating.
As an optimal implementation mode of the utility model, it is two sets of sealed dish is located outer protecting tube both sides opening part respectively, and the external diameter looks adaptation of the external diameter of sealed dish and outer protecting tube.
As a preferred embodiment of the present invention, the inner diameter of the rotary joint is adapted to the outer diameter of the working steel pipe.
In a preferred embodiment of the present invention, the heat insulating layer is filled with a calcium silicate heat insulating material.
As a preferred embodiment of the present invention, the reflective layer is wrapped with aluminum foil reflective cloth.
As a preferred embodiment of the present invention, the heat insulating layer is filled with a polyurethane heat insulating material.
Compared with the prior art, the utility model following beneficial effect has:
the utility model discloses a cooperation of sealed dish and sealed rubber ring is used, the outside at work steel pipe is cup jointed at the interface soon of sealed dish middle part, clockwise rotation sealed dish, the internal thread that makes interface inner wall revolve and the external screw thread of work steel pipe outer wall contacts soon, sealed dish removes to the opening part that is close to outer protective tube tip at clockwise pivoted in-process, sealed dish and outer protective tube tip opening part contact after, the opening part of the external protective tube of sealed rubber ring seals, avoid outer protective tube opening part to expose for a long time outside, also can avoid polyurethane foaming to fill simultaneously, outwards spill over, and is comparatively practical.
The utility model discloses an aluminum silicate fibrofelt, the intraformational calcium silicate thermal insulation material that insulates against heat, the intraformational aluminium foil reflection cloth of reflection and the intraformational polyurethane insulation material that keeps warm between outer protective tube and the work steel pipe replace traditional single packing material, avoid work steel pipe thermal expansion, waterproof sealing and stress destruction's problem, rational in infrastructure, corrosion resisting property is good and reliable and stable.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
In the drawings:
FIG. 1 is a schematic view of the main structure of the present invention;
FIG. 2 is a schematic view of the connection structure of the working steel pipe and the outer protective pipe of the present invention;
FIG. 3 is a schematic view of the sealing disc structure of the present invention;
fig. 4 is a schematic sectional view of the present invention.
In the figure: 1-working a steel pipe; 2-sealing disc; 3-an outer protective tube; 4-filling the hole; 5-external thread; 6-, a sealing rubber ring; 7-a rotary interface; 8-internal threads; 9-inner anti-corrosion coating; 10-aluminum silicate fiber felt; 11-a thermally insulating layer; 12-a reflective layer; 13-a heat-insulating layer; 14-outer anti-corrosion coating.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention.
As shown in figures 1 to 4, the HN prefabricated direct-buried steam insulating pipe comprises a working steel pipe 1 and an outer protective pipe 3, wherein a filling hole 4 is formed in the middle of the upper surface of the outer protective pipe 3, the filling hole 4 facilitates polyurethane foaming and filling, the outer protective pipe 3 is sleeved on the outer side of the working steel pipe 1, external threads 5 are arranged on two sides of the outer wall of the working steel pipe 1, sealing discs 2 are mounted on two sides of the outer wall of the working steel pipe 1, a rotary joint 7 is formed in the middle of each sealing disc 2, the inner diameter of each rotary joint 7 is matched with the outer diameter of the working steel pipe 1, internal threads 8 are arranged on the inner wall of each rotary joint 7, the internal threads 8 are matched with the external threads 5 on the outer wall of the working steel pipe 1, the sealing discs 2 are in rotary joint with the external threads 5 on the outer wall of the working steel pipe 1 through the internal threads 8 on the inner wall of the rotary joint 7, and the opening of the outer protective pipe is conveniently sealed through the sealing discs 2, one side that sealed dish 2 is close to outer protective tube 3 is provided with sealed rubber ring 6, the external diameter of sealed rubber ring 6 and the internal diameter looks adaptation of outer protective tube 3, sealed rubber ring 6 can improve the sealed effect of outer protective tube 3 opening part, work steel pipe 1 surface coating has interior anticorrosive coating 9, interior anticorrosive coating 9 plays anticorrosive effect to work steel pipe 1, the winding of interior anticorrosive coating 9 surface has aluminium silicate fiber felt 10, aluminium silicate fiber felt 10 heat conductivity is low, the heat-proof quality is good, aluminium silicate fiber felt 10 outer wall is provided with insulating layer 11, insulating layer 11 intussuseption is filled with calcium silicate, insulating layer 11 outer wall is provided with reflection stratum 12, reflection stratum 12 outer wall is provided with heat preservation 13, outer protective tube 3 cup joints in the heat preservation 13 outside, and outer protective tube 3 outer wall coating has outer anticorrosive coating 14, anticorrosive coating 14 plays the anticorrosive action to outer protective tube 3 outer wall.
As shown in fig. 1 to 4, in the present configuration, further, two sets of sealing discs 2 are respectively located at openings on two sides of the outer protection tube 3, and the outer diameter of the sealing discs 2 is adapted to the outer diameter of the outer protection tube 3, so as to facilitate sealing at the openings of the outer protection tube 3.
As shown in fig. 1 to 4, in the present configuration, further, an aluminum foil reflective cloth is wound in the reflective layer 12, and a polyurethane thermal insulation material is filled in the thermal insulation layer 13, so as to achieve thermal insulation effect.
The implementation principle of the prefabricated direct-burried steam insulating tube of HN of this embodiment is as follows: through the outside of cup jointing at work steel pipe 1 with the interface 7 of revolving at sealed dish 2 middle part, clockwise rotation sealed dish 2, make the internal thread 8 of revolving the interface 7 inner wall contact 5 soon with the external screw thread of 1 outer wall of work steel pipe, it is sealed, 2 remove to the opening part that is close to outer protective tube 3 tip at clockwise pivoted in-process, sealed dish 2 and the 3 tip opening parts contact back of outer protective tube, sealed rubber ring 6 seals the opening part of outer protective tube 3, avoid outer protective tube 3 opening parts to expose for a long time outside, also can avoid the polyurethane foaming to fill the time simultaneously, outwards spill over.
Claims (6)
1. The HN prefabricated direct-buried steam heat-insulation pipe comprises a working steel pipe (1) and an outer protective pipe (3), and is characterized in that a filling hole (4) is formed in the middle of the upper surface of the outer protective pipe (3), the outer protective pipe (3) is sleeved on the outer side of the working steel pipe (1), external threads (5) are arranged on two sides of the outer wall of the working steel pipe (1), sealing discs (2) are mounted on two sides of the outer wall of the working steel pipe (1), a rotary joint (7) is formed in the middle of each sealing disc (2), internal threads (8) are arranged on the inner wall of the rotary joint (7), the internal threads (8) are matched with the external threads (5) on the outer wall of the working steel pipe (1), a sealing rubber ring (6) is arranged on one side, close to the outer protective pipe (3), of each sealing disc (2), and the outer diameter of each sealing rubber ring (6) is matched with the inner diameter of the outer protective pipe (3);
the outer surface coating of work steel pipe (1) has interior anticorrosive coating (9), interior anticorrosive coating (9) surface winding has aluminium silicate fiber felt (10), aluminium silicate fiber felt (10) outer wall is provided with insulating layer (11), insulating layer (11) outer wall is provided with reflection stratum (12), reflection stratum (12) outer wall is provided with heat preservation (13), outer protective pipe (3) cup joint in heat preservation (13) outside, and outer protective pipe (3) outer wall coating has outer anticorrosive coating (14).
2. The HN prefabricated direct-burial steam thermal insulation pipe as claimed in claim 1, wherein the two groups of sealing discs (2) are respectively arranged at openings at two sides of the outer protective pipe (3), and the outer diameters of the sealing discs (2) are matched with the outer diameter of the outer protective pipe (3).
3. The HN prefabricated direct burial steam insulation pipe according to claim 1, wherein the inner diameter of the screwed port (7) is matched with the outer diameter of the working steel pipe (1).
4. The HN prefabricated direct burial steam insulation pipe as claimed in claim 1, wherein the thermal insulation layer (11) is filled with calcium silicate thermal insulation material.
5. The HN prefabricated direct-burried steam insulation pipe of claim 1, wherein the reflective layer (12) is wrapped with aluminum foil reflective cloth.
6. The HN prefabricated direct-burried steam insulation pipe according to claim 1, wherein the insulation layer (13) is filled with polyurethane insulation material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221800381.8U CN217815732U (en) | 2022-07-13 | 2022-07-13 | HN prefabricated direct-burried steam insulating tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221800381.8U CN217815732U (en) | 2022-07-13 | 2022-07-13 | HN prefabricated direct-burried steam insulating tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217815732U true CN217815732U (en) | 2022-11-15 |
Family
ID=83965653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221800381.8U Active CN217815732U (en) | 2022-07-13 | 2022-07-13 | HN prefabricated direct-burried steam insulating tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217815732U (en) |
-
2022
- 2022-07-13 CN CN202221800381.8U patent/CN217815732U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |