CN201437886U - Polyurethane foam submarine pipe for solvent-free epoxy coating joint - Google Patents
Polyurethane foam submarine pipe for solvent-free epoxy coating joint Download PDFInfo
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- CN201437886U CN201437886U CN2009201100035U CN200920110003U CN201437886U CN 201437886 U CN201437886 U CN 201437886U CN 2009201100035 U CN2009201100035 U CN 2009201100035U CN 200920110003 U CN200920110003 U CN 200920110003U CN 201437886 U CN201437886 U CN 201437886U
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Abstract
The utility model relates to a polyurethane foam submarine pipe for a solvent-free epoxy coating joint consisting of an inner steel pipe, an outer steel pipe, an epoxy powder coating, a polyurethane foam insulation layer, an adhesive layer, a polyethylene layer, a glass wool insulation layer and a heat-shrinkable tape layer. The outer steel pipe is sleeved outside the inner steel pipe; the epoxy powder coating is arranged at the outer surface of the inner steel pipe; the polyurethane foam insulation layer is arranged between the outer steel pipe and the epoxy powder coating; the epoxy powder coating, the adhesive layer and the polyethylene layer are sequentially arranged at the outer surface of the outer steel pipe; the glass wool insulation layer is arranged at the surface of the steel pipe welding part of the inner steel pipe; a solvent-free epoxy powder coating is arranged at the surface of the steel pipe welding part of the outer steel pipe; and the heat-shrinkable tape layer is arranged outside the solvent-free epoxy coating. The solvent-free epoxy coating and the heat-shrinkable tape have high bond force whether the solvent-free epoxy coating is under surface drying or not and can reach up to 100N/cm, the joint part has excellent sealing performance, waterproofness and chemical corrosion resistance, the construction is convenient, the joint quality is ensured, and the polyurethane foam submarine pipe is used for anticorrosion pipeline for submarine oil-gas transmission.
Description
Technical field
The utility model relates to a kind of polyurethane foam sea pipe of non-solvent epoxy coating repaired mouth, can be used for the corrosion-proof pipe line of seabed transferring oil, gas.
Background technique
The main effect of the repaired mouth priming paint of the polyurethane foam of three-layer polyethylene sea pipe at present is that the antikathode that improves shrink belt is peeled off, and its corrosion proof function is not outstanding; And priming paint and shrink belt matching operation requirement harshness, the baking bond quality is difficult to stablize, in case the result is the water inlet of contraction bands seepage, steel pipe is just without any barrier.And the epoxy primer of the shrink belt that adopts requires to coat shrink belt being coated with under the priming surface drying state, mainly be that present epoxy primer is based on reactivity under the surface drying state and the hot melt adhesive on the shrink belt under the molten state reacts, reach the effect that merges bonding; And after doing solid work, just can not produce the effective fusion bonding with hot melt adhesive, cause underproof repaired mouth.
The model utility content
The purpose of this utility model provides a kind of polyurethane foam sea pipe of non-solvent epoxy coating repaired mouth, the non-solvent epoxy coating, no matter whether do solid work all and have very high cohesive force with thermal shrinkage, reach 100N/cm, make the repaired mouth place have good sealing, water proofing property, anti-chemical erosion performance, site operation is convenient, guarantees the repaired mouth quality, can be used for the corrosion-proof pipe line of seabed transferring oil, gas.
The polyurethane foam sea pipe of a kind of non-solvent epoxy coating repaired mouth described in the utility model is made of interior steel pipe, outer steel pipe, FBE, polyurethane foam insulation layer, adhesive layer, polyethylene layer, non-solvent epoxy coating, thermal shrinkage belt and glass wool thermal insulation layer; Interior steel pipe and outer steel pipe two ends are for reserving welding section, outer steel pipe socket is in interior steel pipe outside, the outer surface of interior steel pipe is a FBE, it between outer steel pipe and the FBE polyurethane foam insulation layer, the outer surface of steel pipe is FBE, adhesive layer, polyethylene layer in turn outside, the steel pipe weld steel tube surface of interior steel pipe is the glass wool thermal insulation layer, and the steel pipe weld steel tube surface of steel pipe is the non-solvent epoxy coating outside, is the thermal shrinkage belt outside the non-solvent epoxy coating.
The polyurethane foam sea pipe manufacturer process of non-solvent epoxy coating repaired mouth of the present utility model is as follows: with the outer surface derusting by sandblasting of interior steel pipe, two ends all reserve the reservation welding section, outer surface at interior steel pipe applies FBE, interior steel pipe is fixed on the inside of outer steel pipe, make two steel pipes be in the concentric position, fixing support rack is put between interior steel pipe and the outer steel pipe, the filled polyurethane foam heat-insulation layer, outer surface derusting by sandblasting with outer steel pipe, reserve the reservation welding section, the outer surface of steel pipe applies FBE outside, adhesive layer and polyethylene layer, when pipeline connects construction at the scene, after the reservation welding section connection welding well with steel pipe two ends in the extra large pipe of the polyurethane foam of two non-solvent epoxy coating repaired mouths, surface at the weld steel pipe of interior steel pipe coats the glass wool thermal insulation layer, after the reservation welding section connection welding well with outer steel pipe two ends, carry out field joint construction then.The temperature of weld steel tube surface is heated to 40～50 ℃, it is carried out comprehensive derusting by sandblasting, make the processing grade on steel surface reach the Sa2.5 level, use the dirt of the method removing steel tube surface of air purge then.Solventless epoxy coating is brushed steel pipe weld steel tube surface outside uniformly, make the non-solvent epoxy coating thickness reach 0.2mm, the non-solvent epoxy coating is heated to 70 ± 5 ℃, carry out thickness measuring and electrical spark leak detection behind the heating 10min, after guaranteeing to reach required thickness and not having leak source, shrink belt is installed.
The utility model beneficial effect compared with prior art:
1, the polyurethane foam of non-solvent epoxy coating repaired mouth sea pipe, simple, the on-the-spot field joint construction of production technology is convenient, can be used for the corrosion-proof pipe line of seabed transferring oil, gas.
2, adopt non-solvent epoxy coating repaired mouth, whether no matter the non-solvent epoxy coating do solid work all has very high cohesive force with thermal shrinkage, reaches 200N/cm, makes the repaired mouth place have good sealing, water proofing property, anti-chemical erosion performance, site operation is convenient, guarantees the repaired mouth quality.
Description of drawings
Fig. 1 is the longitudinal sectional view of the polyurethane foam sea pipe of non-solvent epoxy coating repaired mouth.Among the figure: steel pipe in 1; 2 outer steel pipes; 3 FBE; 4 polyurethane foam insulation layers; 5 FBE; 6 adhesive layers; 7 polyethylene layers; 8 non-solvent epoxy coatings; 9 thermal shrinkage belts; 10 outer steel pipes are reserved welding section; 11 outer steel pipe weld steel pipes; Steel pipe is reserved welding section in 12; Steel pipe weld steel pipe in 13; 14 glass wool thermal insulation layers.
Embodiment
Described in the utility model by interior steel pipe 1, outer steel pipe 2, FBE 3,5, polyurethane foam insulation layer 4, adhesive layer 6, polyethylene layer 7, non-solvent epoxy coating 8, thermal shrinkage belt 9 and 14 glass wool thermal insulation layers formation; Interior steel pipe 1 and outer steel pipe 2 two ends are for reserving welding section 10,12, outer steel pipe 2 is enclosed within interior steel pipe 1 outside, the outer surface of interior steel pipe 1 is a FBE 3, be polyurethane foam insulation layer 4 between outer steel pipe 2 and the FBE 3, the outer surface of steel pipe 2 is FBE 5, adhesive layer 6, polyethylene layer 7 in turn outside, steel pipe weld steel pipe 13 surfaces of interior steel pipe 1 are glass wool thermal insulation layer 14, steel pipe weld steel pipe 11 surfaces of steel pipe 2 are non-solvent epoxy coating 8 outside, are thermal shrinkage belt 9 outside the non-solvent epoxy coating.
Wherein interior steel pipe 1 length 8～15m, external diameter of pipe 102～630mm, wall thickness 5～18mm, outer steel pipe 2 length 8～15m, external diameter of pipe 108～720mm, wall thickness 5～18mm, reserve each long 150～200mm of welding section 10 two ends, the thickness of FBE 3 is 0.12～0.4mm, the thickness of polyurethane foam insulation layer 4 is 60～200mm, the thickness of FBE 5 is 0.12～0.4mm, the thickness of adhesive layer 6 is 0.17～0.4mm, the thickness of polyethylene layer 7 is 1.8～4.0mm, the thickness of non-solvent epoxy coating 8 is 0.15～0.25mm, the thickness of thermal shrinkage belt 9 is 2～4mm, and thermal shrinkage belt 9 is 100～300mm with the lap length of polyethylene layer 7.
The polyurethane foam sea pipe of more excellent non-solvent epoxy coating repaired mouth, steel pipe 1 length 12m in it is characterized in that, external diameter of pipe 219mm, wall thickness 6mm, outer steel pipe 2 length 12m, external diameter of pipe 325mm, wall thickness 6mm, reserve welding section each long 150mm of 10 two ends, the thickness of FBE 3 is 0.2mm, the thickness of polyurethane foam insulation layer 4 is 100mm, the thickness of FBE 5 is 0.2mm, the thickness of adhesive layer 6 is 0.23mm, the thickness of polyethylene layer 7 is 3.7mm, the thickness of non-solvent epoxy coating 8 is 0.2mm, the thickness of thermal shrinkage belt 9 is 2.5mm, and thermal shrinkage belt 9 is 150mm with the lap length of polyethylene layer 7.
Claims (3)
1. manage in the polyurethane foam of non-solvent epoxy coating repaired mouth sea, by interior steel pipe, outer steel pipe, FBE, polyurethane foam insulation layer, adhesive layer, polyethylene layer, glass wool thermal insulation layer and thermal shrinkage belt constitute, it is characterized in that: interior steel pipe and outer steel pipe two ends are for reserving welding section, outer steel pipe socket is in interior steel pipe outside, the outer surface of interior steel pipe is a FBE, it between outer steel pipe and the FBE polyurethane foam insulation layer, the outer surface of steel pipe is FBE in turn outside, adhesive layer, polyethylene layer, the steel pipe weld steel tube surface of interior steel pipe is the glass wool thermal insulation layer, the steel pipe weld steel tube surface of steel pipe is the non-solvent epoxy powder coating outside, is the thermal shrinkage belt outside the non-solvent epoxy coating.
2. the polyurethane foam sea pipe of non-solvent epoxy coating repaired mouth according to claim 1, it is characterized in that: interior steel pipe (1) length 8～15m, external diameter of pipe 102～630mm, wall thickness 5～18mm, outer steel pipe (2) length 8～15m, external diameter of pipe 108～720mm, wall thickness 5～18mm, reserve each long 150～200mm of welding section (10) two ends, the thickness of FBE (3) is 0.12～0.4mm, the thickness of polyurethane foam insulation layer (4) is 60～200mm, the thickness of FBE (5) is 0.12～0.4mm, the thickness of adhesive layer (6) is 0.17～0.4mm, the thickness of polyethylene layer (7) is 1.8～4.0mm, the thickness of non-solvent epoxy coating (8) is 0.15～0.25mm, the thickness of thermal shrinkage belt (9) is 2～4mm, and thermal shrinkage belt (9) is 100～300mm with the lap length of polyethylene layer (7).
3. the polyurethane foam sea pipe of non-solvent epoxy coating repaired mouth according to claim 1, it is characterized in that: interior steel pipe (1) length 12m, external diameter of pipe 219mm, wall thickness 6mm, outer steel pipe (2) length 12m, external diameter of pipe 325mm, wall thickness 6mm, reserve welding section (10) each long 150mm of two ends, the thickness of FBE (3) is 0.2mm, the thickness of polyurethane foam insulation layer (4) is 100mm, the thickness of FBE (5) is 0.2mm, the thickness of adhesive layer (6) is 0.23mm, the thickness of polyethylene layer (7) is 3.7mm, the thickness of non-solvent epoxy coating (8) is 0.2mm, the thickness of thermal shrinkage belt (9) is 2.5mm, and thermal shrinkage belt (9) is 150mm with the lap length of polyethylene layer (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201100035U CN201437886U (en) | 2009-07-03 | 2009-07-03 | Polyurethane foam submarine pipe for solvent-free epoxy coating joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201100035U CN201437886U (en) | 2009-07-03 | 2009-07-03 | Polyurethane foam submarine pipe for solvent-free epoxy coating joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201437886U true CN201437886U (en) | 2010-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201100035U Expired - Lifetime CN201437886U (en) | 2009-07-03 | 2009-07-03 | Polyurethane foam submarine pipe for solvent-free epoxy coating joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201437886U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390103A (en) * | 2014-10-31 | 2015-03-04 | 哈尔滨朗格斯特节能科技有限公司 | Telescopic connector repairing sleeve of prefabricated direct-embedded heat preservation pipeline system and connecting method |
-
2009
- 2009-07-03 CN CN2009201100035U patent/CN201437886U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390103A (en) * | 2014-10-31 | 2015-03-04 | 哈尔滨朗格斯特节能科技有限公司 | Telescopic connector repairing sleeve of prefabricated direct-embedded heat preservation pipeline system and connecting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100414 |