CN202674584U - Antiseptic counterweight pipe capable of preventing counterweight layer from slipping - Google Patents
Antiseptic counterweight pipe capable of preventing counterweight layer from slipping Download PDFInfo
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- CN202674584U CN202674584U CN 201220150001 CN201220150001U CN202674584U CN 202674584 U CN202674584 U CN 202674584U CN 201220150001 CN201220150001 CN 201220150001 CN 201220150001 U CN201220150001 U CN 201220150001U CN 202674584 U CN202674584 U CN 202674584U
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- counterweight
- winding band
- cold winding
- pipe
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Abstract
The utility model discloses an antiseptic counterweight pipe capable of preventing a counterweight layer from slipping. The antiseptic counterweight pipe capable of preventing the counterweight layer from slipping comprises a steel pipe. A double-deck melting epoxy powder layer, an adhesive layer, a cool wound tape layer and a concrete counterweight layer are arranged on the outer surface of the steel pipe from inside to outside layer by layer. The cool wound tape layer is formed by cool winding tapes which are of spiral shape and wound on the adhesive layer. Two adjacent circles of the cool wound tapes are in overlap connection. The antiseptic counterweight pipe capable of preventing the counterweight layer from slipping is capable of improving shear strength of the concrete counterweight layer and the double-deck melting epoxy powder layer which are coated on the outer surface of the steel pipe, increasing adhesive force of the concrete counterweight layer, and effectively and reliably preventing the concrete counterweight layer from slipping from the steel pipe, and strengthening stability of the concrete counterweight layer on the steel pipe. Meanwhile, the cool wound tapes are capable of effectively protecting the double-deck melting epoxy powder layer and preventing concrete coating from impacting and destroying the double-deck melting epoxy powder layer. The antiseptic counterweight pipe is high in compression strength, reasonable in manufacturing craft, and good in controllability.
Description
Technical field
The utility model relates to a kind of anticorrosive balance-weight pipe, particularly relates to a kind of anticorrosive balance-weight pipe that can prevent the weight coating slippage.
Background technique
Along with the exploitation of submarine oil resources, the application of submarine pipeline is more and more extensive, and it is the escape way that ensures the offshore oil and gas safe operation.For guaranteeing the stability of submarine pipeline, submarine pipeline generally all designs the concrete weight coating structure, provides negative buoyancy on the one hand, on the other hand extra large pipe is carried out mechanical protection.
The submarine pipeline structure generally is designed to three strata alkene anticorrosive coats and adds concrete weighted coating, and it comprises by steel pipe and is successively set on from the inside to the outside Epoxy Anticorrosion layer, adhesive layer, polyethylene layer, antiskid particles layer and concrete weighted coating on the outer surface of steel tube.The dual-layer epoxy powder coating is because antiseptic property is excellent, the low first-selected coating that becomes a lot of Submarine Pipeline Designs of cost.But there are many defectives in the concrete weight coating of dual-layer epoxy powder coating:
1) shear strength between concrete weighted coating and epoxy layer is lower, and the middle antiskid particles layer that sprays can not play effective anti-slip effect, is difficult to engineering demands.
2) the antiskid particles layer is had relatively high expectations to coating personnel's operant level in coating process, and process parameter is restive, and construction quality is difficult to ensure.
3) concrete adopts spraying coating process to finish, and the antiskid particles layer can not play effective mechanical protection effect to the epoxy anticorrosion layer, easily causes the breakage of dual-layer epoxy powder coating.
The existence of above-mentioned these defectives becomes the key factor that restricts the extensive use of dual-layer epoxy powder coating counterweight tube.
The model utility content
The utility model provides a kind of anticorrosive balance-weight pipe that can prevent the weight coating slippage for solving the technical problem that exists in the known technology.
The technological scheme that the utility model is taked for the technical problem that exists in the solution known technology is: a kind of anticorrosive balance-weight pipe that can prevent the weight coating slippage, comprise steel pipe, on described outer surface of steel tube, successively be provided with from the inside to the outside dual―layer fusion bonded epoxy layer, gluing layer, Cold winding band layer and concrete weighted coating, the Cold winding band curl that forms described Cold winding band layer is wrapped on the described gluing layer, and the described Cold winding band of two adjacent rings overlaps mutually.
The Cold winding band that forms described Cold winding band layer is the anticorrosion Cold winding band of polypropylene reinforcing fiber.
The adhesive that forms described gluing layer is asphalt modification neoprene adhesive.
The lap width of described Cold winding band is 45%～55% of described Cold winding band width.
Advantage and the good effect that the utlity model has are: the whole continuous slip-preventing structure that forms by the spiral Cold winding band that twines outside being coated with the dual―layer fusion bonded epoxy layer of adhesive, improved spraying on its outer surface concrete weighted coating and the shear strength of dual―layer fusion bonded epoxy layer, strengthened the adhesion of concrete weighted coating, can prevent effectively reliably concrete weighted coating slippage from the steel pipe, strengthen the steadiness of concrete weighted coating on steel pipe.And Cold winding band can be protected the dual―layer fusion bonded epoxy layer effectively, prevents concrete spray impact failure dual―layer fusion bonded epoxy layer, and the compressive strength of this anticorrosive balance-weight pipe is high, and preparation process is reasonable, and controllability is good.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Among the figure: 1, steel pipe, 2, the dual―layer fusion bonded epoxy layer, 3, the gluing layer, 4, the Cold winding band layer, 5, concrete weighted coating.
Embodiment
For further understanding summary of the invention of the present utility model, Characteristic, hereby exemplify following examples, and cooperate accompanying drawing to be described in detail as follows:
See also Fig. 1, a kind of anticorrosive balance-weight pipe that can prevent the weight coating slippage, comprise steel pipe 1, on described steel pipe 1 outer surface, successively be provided with from the inside to the outside dual―layer fusion bonded epoxy layer 2, gluing layer 3, Cold winding band layer 4 and concrete weighted coating 5, the Cold winding band curl that forms described Cold winding band layer 4 is wrapped on the described gluing layer 4, and the described Cold winding band of two adjacent rings overlaps mutually.
The above-mentioned making method that can prevent the anticorrosive balance-weight pipe of weight coating slippage may further comprise the steps:
1) at the outer surface coating dual―layer fusion bonded epoxy layer of steel pipe, the dual―layer fusion bonded epoxy layer that coating is finished carries out cleaning surfaces and dry the processing; If the dual―layer fusion bonded epoxy layer exists such as the defective of hole, pit etc., should repair the defective that the dual―layer fusion bonded epoxy layer exists.The dual―layer fusion bonded epoxy layer should clean, without greasy dirt, free from dust or other pollutants.
2) use clean hairbrush, roller or other mechanical means, on the dual―layer fusion bonded epoxy layer, evenly be coated with adhesive, form the gluing layer at the dual―layer fusion bonded epoxy layer.The defectives such as holiday, grumeleuse or sagging can not appear in adhesive, and its consumption is: 10～14m
2/ L.
3) behind the coating adhesive 5～10 minutes, after gluing layer dry tack free, twine Cold winding band at gluing layer surface curl, form the Cold winding band layer, and the described Cold winding band of two adjacent rings overlaps mutually.
The lap width of Cold winding band is preferably 45%～55% of described Cold winding band width, and during winding, Cold winding band must be strained, flatten, and makes surfacing, and contact is closely without bubble.The top of Cold winding band and tail end preferably immerse before winding in the adhesive respectively, immerse length and preferably are not less than 20mm.Twine again after being stained with adhesive, can further strengthen the steadiness of Cold winding band.
For Cold winding band is twined evenly; Cold winding band can be placed on the whirligig; and regulate rotational speed; then; along with the rotation of anticorrosive balance-weight pipe is axially twined along it; the slip-preventing structure that is jointly formed by gluing layer and Cold winding band layer that obtains after twining can play anti-slip effect to concrete weighted coating, the dual―layer fusion bonded epoxy layer is played the effect of mechanical protection.
4) the Cold winding band layer is carried out the surface and flatten processing;
5) form concrete weighted coating in the spraying of Cold winding band layer.
The embodiment 1 of above-mentioned making method:
1) at the outer surface coating dual―layer fusion bonded epoxy layer of steel pipe, the dual―layer fusion bonded epoxy layer that coating is finished carries out cleaning surfaces and dry the processing; If the dual―layer fusion bonded epoxy layer exists such as the defective of hole, pit etc., should repair the defective that the dual―layer fusion bonded epoxy layer exists.The dual―layer fusion bonded epoxy layer should clean, without greasy dirt, free from dust or other pollutants.
2) use clean hairbrush, roller or other mechanical means, on the dual―layer fusion bonded epoxy layer, evenly be coated with adhesive, form the gluing layer at the dual―layer fusion bonded epoxy layer.The defectives such as holiday, grumeleuse or sagging can not appear in adhesive, and its consumption is: 10m
2/ L.
3) behind the coating adhesive 5 minutes, gluing layer surface was dry, and curl twines Cold winding band on gluing layer surface, form the Cold winding band layer, and the described Cold winding band of two adjacent rings overlaps mutually.
The lap width of Cold winding band is 45% of described Cold winding band width, and during winding, Cold winding band must be strained, flatten, and makes surfacing, and contact is closely without bubble.The top of Cold winding band and tail end preferably immerse in the adhesive before winding respectively, and immersion length is 20mm.Twine again after being stained with adhesive, can further strengthen the steadiness of Cold winding band.
For Cold winding band is twined evenly; Cold winding band can be placed on the whirligig; and regulate rotational speed; then; along with the rotation of anticorrosive balance-weight pipe is axially twined along it; the slip-preventing structure that is jointly formed by gluing layer and Cold winding band layer that obtains after twining can play anti-slip effect to concrete weighted coating, the dual―layer fusion bonded epoxy layer is played the effect of mechanical protection.
4) the Cold winding band layer is carried out the surface and flatten processing;
5) form concrete weighted coating at the Cold winding band layer.
The anticorrosive balance-weight pipe that adopts above-described embodiment 1 described method to make, its slip-preventing structure continuity is good, overall tightness is good, and the affixed property of concrete weighted coating and Cold winding band layer and the affixed property of Cold winding band layer and dual―layer fusion bonded epoxy layer are good, and adhesion is large.The adhesion of Cold winding band and dual―layer fusion bonded epoxy layer is 0.12Mpa, and the anti-slip power value of concrete weighted coating and dual―layer fusion bonded epoxy interlayer can reach 310KN, and this structure can play to the anticorrosive balance-weight pipe in seabed effectively anti-slip effect.Adopt the anticorrosive balance-weight pipe compressive strength of this slip-preventing structure high, shock resistance is good.
The embodiment 2 of above-mentioned making method:
Be with embodiment 1 difference: 1) consumption of adhesive is: 14m
2/ L; 2) be 10 minutes the time of drying of adhesive; 3) lap width of Cold winding band is 50% of described Cold winding band width; 4) length in the top of Cold winding band and the tail end immersion adhesive is 30mm.Except above-mentioned difference, all the other methods are all identical with embodiment 1.
The anticorrosive balance-weight pipe that adopts above-described embodiment 2 described methods to make, its slip-preventing structure continuity is good, overall tightness is good, and the affixed property of concrete weighted coating and Cold winding band layer and the affixed property of Cold winding band layer and dual―layer fusion bonded epoxy layer are good, and adhesion is large.The adhesion of Cold winding band and dual―layer fusion bonded epoxy layer is 0.15Mpa, and the anti-slip power value of concrete weighted coating and dual―layer fusion bonded epoxy interlayer can reach 350KN, and this structure can play to the anticorrosive balance-weight pipe in seabed effectively anti-slip effect.Adopt the anticorrosive balance-weight pipe compressive strength of this slip-preventing structure high, shock resistance is good.
The embodiment 3 of above-mentioned making method:
Be with embodiment 1 difference: 1) consumption of adhesive is: 12m
2/ L; 2) be 8 minutes the time of drying of adhesive; 3) lap width of Cold winding band is 55% of described Cold winding band width; 4) length in the top of Cold winding band and the tail end immersion adhesive is 25mm.Except above-mentioned difference, all the other methods are all identical with embodiment 1.
The anticorrosive balance-weight pipe that adopts above-described embodiment 3 described methods to make, its slip-preventing structure continuity is good, overall tightness is good, and the affixed property of concrete weighted coating and Cold winding band layer and the affixed property of Cold winding band layer and dual―layer fusion bonded epoxy layer are good, and adhesion is large.The adhesion of Cold winding band and dual―layer fusion bonded epoxy layer is 0.2Mpa, and the anti-slip power value of concrete weighted coating and dual―layer fusion bonded epoxy interlayer can reach 360KN, and this structure can play to the anticorrosive balance-weight pipe in seabed effectively anti-slip effect.Adopt the anticorrosive balance-weight pipe compressive strength of this slip-preventing structure high, shock resistance is good.
The Cold winding band that forms above-mentioned Cold winding band layer preferably adopts the commercially available anticorrosion Cold winding band of polypropylene reinforcing fiber.The adhesive that forms above-mentioned gluing layer preferably adopts commercially available asphalt modification neoprene adhesive.
Although the above is described preferred embodiment of the present utility model by reference to the accompanying drawings; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not breaking away from the scope situation that the utility model aim and claim protect, can also make a lot of forms, these all belong within the protection domain of the present utility model.
Claims (2)
1. anticorrosive balance-weight pipe that can prevent the weight coating slippage, comprise steel pipe, it is characterized in that, on described outer surface of steel tube, successively be provided with from the inside to the outside dual―layer fusion bonded epoxy layer, gluing layer, Cold winding band layer and concrete weighted coating, the Cold winding band curl that forms described Cold winding band layer is wrapped on the described gluing layer, and the described Cold winding band of two adjacent rings overlaps mutually.
2. the anticorrosive balance-weight pipe that can prevent the weight coating slippage according to claim 1 is characterized in that, the lap width of described Cold winding band is 45%～55% of described Cold winding band width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220150001 CN202674584U (en) | 2012-04-10 | 2012-04-10 | Antiseptic counterweight pipe capable of preventing counterweight layer from slipping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220150001 CN202674584U (en) | 2012-04-10 | 2012-04-10 | Antiseptic counterweight pipe capable of preventing counterweight layer from slipping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202674584U true CN202674584U (en) | 2013-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220150001 Expired - Lifetime CN202674584U (en) | 2012-04-10 | 2012-04-10 | Antiseptic counterweight pipe capable of preventing counterweight layer from slipping |
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| CN (1) | CN202674584U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620065A (en) * | 2012-04-10 | 2012-08-01 | 中国海洋石油总公司 | Anti-corrosion counterweight pipe capable of preventing counterweight layer from shedding and method for manufacturing anti-corrosion counterweight pipe |
| CN104633305A (en) * | 2014-12-31 | 2015-05-20 | 江苏玉龙钢管股份有限公司 | Anti-corrosion anti-skid steel pipe and machining method thereof |
-
2012
- 2012-04-10 CN CN 201220150001 patent/CN202674584U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620065A (en) * | 2012-04-10 | 2012-08-01 | 中国海洋石油总公司 | Anti-corrosion counterweight pipe capable of preventing counterweight layer from shedding and method for manufacturing anti-corrosion counterweight pipe |
| CN104633305A (en) * | 2014-12-31 | 2015-05-20 | 江苏玉龙钢管股份有限公司 | Anti-corrosion anti-skid steel pipe and machining method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100016 4705 mailbox, CNOOC building, 25 Chaoyangmen North Street, Dongcheng District, Beijing. Co-patentee after: CNOOC Energy Development Co., Ltd. Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100016 4705 mailbox, CNOOC building, 25 Chaoyangmen North Street, Dongcheng District, Beijing. Co-patentee before: CNOOC Energy Development Co., Ltd. Patentee before: China National Offshore Oil Corporation |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130116 |