CN2313144Y - High-temp. composite heat-insulation direct-buried tube - Google Patents
High-temp. composite heat-insulation direct-buried tube Download PDFInfo
- Publication number
- CN2313144Y CN2313144Y CN 97231361 CN97231361U CN2313144Y CN 2313144 Y CN2313144 Y CN 2313144Y CN 97231361 CN97231361 CN 97231361 CN 97231361 U CN97231361 U CN 97231361U CN 2313144 Y CN2313144 Y CN 2313144Y
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- heat
- layer
- insulation
- inorganic insulating
- temperature resistance
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Abstract
The utility model discloses a high-temperature resistance composite heat-insulation direct-buried tube, which belongs to the steam and high-temperature medium composite heat-insulation direct-buried heat tube, particularly a heat-insulation direct-buried tube used on a steam strainer. The utility model comprises a metal tube, a high-temperature resistance anti-rust coat, a dry lubricant layer, a heat-insulation layer, and an anti-corrosive and waterproof protective layer, wherein, high-temperature resistance gaskets are arranged on the high-temperature resistance anti-rust coat at intervals; the exterior of the high-temperature resistance gaskets is the inorganic heat-insulation layer; a heat-insulation air layer is formed between the high-temperature resistance anti-rust coat and the heat-insulation layer; the inner side of the inorganic heat-insulation layer is provided with an anti heat radiation layer; an aluminum foil anti heat radiation layer is arranged between the inorganic heat-insulation layer and the polyurethane heat-insulation layer. The utility model has the advantages of low heat loss, good heat-insulation property, long service life, etc.
Description
The utility model relates to a kind of high temperature resistant compound direct buried pipe, belongs to steam and high temperature media complex heat-preservation directly buried heat distribution pipeline, is particularly suitable for doing heat supply vapour net insulation direct buried pipe.
At present, for high-temperature water, especially still be in the exploratory stage for high temperature steam pipeline directly buried installation technology.The steam and the high temperature media complex heat-preservation directly buried type heating power pipe of Dalian Inst of Chemicophysics, Chinese Academy of Sciences's development; its structure is to be followed successively by metal tube from inside to outside; the high temperature resin layer; dry lubricant layer and inorganic drag reduction layer; inorganic insulating layer; polyurethane insulation coating; anticorrosion waterproof protecting layer; its inorganic drag reduction layer is to be twined by inorganic fiber to constitute; in use because the friction of expanding with heat and contract with cold of metal tube can become broken; under action of gravity, accumulate in the bottom of pipe; increased the flexible resistance of pipe; unsupported cavity is then formed at the top at pipe; stressed back is fragile; inorganic insulating layer and polyurethane insulation coating are bonded to one in addition; because their expansion coefficient difference; in hot running; easily cause thermal insulation layer to tear, shortened working life, and strengthened heat loss.
The purpose of this utility model is to overcome the deficiency in the background technique and provides that a kind of good heat insulating, heat loss are little, the high temperature resistant compound direct buried pipe of long service life.
The purpose of this utility model is achieved in that it comprises metal tube, thermostable rustproof coating, high temperature resistant dry lubricant layer, inorganic insulating layer, polyurethane insulation coating, anticorrosion waterproof protecting layer, on the thermostable rustproof coating, be interval with heat resistant and wear resistant resistance to compression packing ring, packing ring is an inorganic insulating layer outward, makes between thermostable rustproof coating and the inorganic insulating layer to constitute air heat-insulation layer; Be provided with the anti-heat radiation layer in the inorganic insulating layer inboard; Between inorganic insulating layer and polyurethane insulation coating, be provided with aluminium foil anti-heat radiation layer.
The purpose of this utility model can also realize by following technical measures: be provided with the dry lubricant layer between thermostable rustproof coating and heat resistant and wear resistant resistance to compression packing ring.
The utility model compared with prior art has following advantage:
1, be provided with aluminium foil anti-heat radiation layer between anti-heat radiation layer and inorganic insulating layer and the polyurethane insulation coating owing to being provided with in the inorganic insulating layer inboard, therefore, heat loss is little, good heat insulating, and because the utility model is provided with air heat-insulation layer, the air thermal conductivity is little, has more strengthened its heat insulation effect;
2, owing between inorganic insulating layer and polyurethane insulation coating, be provided with aluminium foil anti-heat radiation layer, not only increased heat insulation effect but also played two thermal insulation layers that expansion coefficient is different separately, thereby, in hot running, thermal insulation layer can not make thermal insulation layer tear damage because of expansion coefficient is different, thereby has prolonged working life, and owing in air heat-insulation layer, be provided with heat resistant and wear resistant resistance to compression packing ring, be used to support thermal insulation layer, thereby be not subject to the external force effect and damage;
3, owing to be provided with air heat-insulation layer, reduced the resistance of metal tube in flexible.
Accompanying drawing is the utility model structural representation sectional view
Among the figure: metal tube (1), dry lubricant layer (2), polyurethane insulation coating (3), aluminium foil anti-heat radiation layer (4), inorganic insulating layer (5), anti-heat radiation layer (6), air heat-insulation layer (7), heat resistant and wear resistant resistance to compression packing ring (8), anticorrosion waterproof protecting layer (9), thermostable rustproof coating (10)
Below in conjunction with drawings and Examples in detail the utility model is described in detail:
As shown in the figure; be followed successively by metal tube (1) from inside to outside; thermostable rustproof coating (10); air heat-insulation layer (7); anti-heat radiation layer (6); inorganic insulating layer (5); aluminium foil anti-heat radiation layer (4); polyurethane insulation coating (3); anticorrosion waterproof protecting layer (9); the anticorrosion waterproof protecting layer of the utility model (9) is to make with glass fibre reinforced plastics; go up spacer sleeve in thermostable rustproof coating (10) heat resistant and wear resistant resistance to compression packing ring (8) is housed; heat resistant and wear resistant resistance to compression packing ring (8) is outer to be inorganic insulating layer (5); make like this between thermostable rustproof coating (10) and the inorganic insulating layer (5) just to have constituted air heat-insulation layer (7), anti-heat radiation layer (6) is positioned at outside the air heat-insulation layer (7); inorganic insulating layer (5) inboard.For reducing friction between metal tube (1) and the high temperature resistant packing ring (8), between thermostable rustproof coating (10) on the metal tube (1) and high temperature resistant packing ring (8), be provided with dry lubricant layer (2).
Claims (2)
1, a kind of refractory composite heat insulating direct buried pipe comprises metal tube, thermostable rustproof coating, dry lubricant layer, inorganic insulating layer, polyurethane insulation coating, anticorrosion waterproof protecting layer, it is characterized in that:
A, be interval with heat resistant and wear resistant resistance to compression packing ring on the thermostable rustproof coating, packing ring is an inorganic insulating layer outward, makes between thermostable rustproof coating and the inorganic insulating layer to constitute air heat-insulation layer;
B, between inorganic insulating layer and polyurethane insulation coating, be provided with aluminium foil anti-heat radiation layer;
C, be provided with the anti-heat radiation layer in the inorganic insulating layer inboard.
2, refractory composite heat insulating direct buried pipe according to claim 1 is characterized in that being provided with the dry lubricant layer between thermostable rustproof coating and the high temperature resistant packing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97231361 CN2313144Y (en) | 1997-12-22 | 1997-12-22 | High-temp. composite heat-insulation direct-buried tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97231361 CN2313144Y (en) | 1997-12-22 | 1997-12-22 | High-temp. composite heat-insulation direct-buried tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2313144Y true CN2313144Y (en) | 1999-04-07 |
Family
ID=33943592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97231361 Expired - Fee Related CN2313144Y (en) | 1997-12-22 | 1997-12-22 | High-temp. composite heat-insulation direct-buried tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2313144Y (en) |
-
1997
- 1997-12-22 CN CN 97231361 patent/CN2313144Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |