CN208664509U - A kind of carbon steel-concrete/compound submarine pipeline of cement mortar-stainless steel - Google Patents
A kind of carbon steel-concrete/compound submarine pipeline of cement mortar-stainless steel Download PDFInfo
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- CN208664509U CN208664509U CN201821068997.4U CN201821068997U CN208664509U CN 208664509 U CN208664509 U CN 208664509U CN 201821068997 U CN201821068997 U CN 201821068997U CN 208664509 U CN208664509 U CN 208664509U
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- stainless steel
- carbon steel
- concrete
- cement mortar
- compound
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- 239000010935 stainless steel Substances 0.000 title claims abstract description 39
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 39
- 150000001875 compounds Chemical class 0.000 title claims abstract description 33
- 239000004567 concrete Substances 0.000 title claims abstract description 32
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 9
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 9
- 239000004568 cement Substances 0.000 title claims abstract description 9
- 229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 31
- 239000010962 carbon steel Substances 0.000 claims abstract description 31
- 239000011083 cement mortar Substances 0.000 claims abstract description 15
- 238000003466 welding Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000004323 axial length Effects 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 abstract description 9
- 230000007797 corrosion Effects 0.000 abstract description 9
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004643 material aging Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The utility model provides a kind of carbon steel-concrete/compound submarine pipeline of cement mortar-stainless steel, belongs to ocean structure field of engineering technology.The compound submarine pipeline along several compound sub-pipes that the pipeline is axially set gradually by being spliced, each compound sub-pipes structure is identical, it include the outer layer carbon steel tubing and inner layer stainless steel tube that there is circular cross section and place with one heart, fill concrete or cement mortar form the sandwich with circular cylindrical cross-section between outer layer carbon steel tubing and inner layer stainless steel tube.Inner layer stainless steel tube road weld seam is covered by concrete/cement mortar between the compound sub-pipes of adjacent two, can effectively improve the fatigue behaviour of commissure inner layer stainless steel tube.Compound submarine pipeline structure provided by the utility model, is remarkably improved the mechanical property of pipeline entirety and the corrosion resistance to transmission medium, and have both heat insulating ability.
Description
Technical field
The utility model belongs to ocean structure field of engineering technology, and in particular to a kind of carbon steel-concrete/cement bonded sand
The compound submarine pipeline of slurry-stainless steel.
Background technique
Submarine pipeline is a kind of important feature composition of offshore and gas development, by strength of materials characteristic, in protective conduit
Transmission medium has ensured the interrupted transmission of the resources such as oil gas from the influence of complex environment outside pipeline, carries most of oil
The vital task of gas field conveying.But during military service, submarine pipeline is by internal or external, artificial or natural cause
It influences, it may occur however that structural damage and material aging, the accumulation of this damage may cause submarine pipeline and rupture failure, corruption occur
The accidents such as erosion leakage.In recent years, carbon dioxide (CO in oil gas medium2) or hydrogen sulfide (H2S) perishable composition transfer causes pipeline
Corrosion leakage, Activities of Ocean generation fall anchor and cause the accidents such as pipeline configuration damage increasingly frequent, although submarine pipeline technology is passed through
Significant progress, but submarine pipeline structure type is difficult to meet the requirement of mechanical property and corrosion resistance at present, and accident increasingly increases
Add.Such as conventional monolayers and double-layer submarine pipeline, contain certain carbon dioxide (CO in transmission2) or hydrogen sulfide (H2S) the oil of ingredient
When gas medium, it is difficult to meet corrosion resistance requirement by the method for designing corrosion allowance.Composite bimetal pipe, it is stainless by internal layer
Steel pipe lift structure corrosion resistance.But inner layer stainless steel tube and outer concrete are when calculating pipeline overall mechanical properties, because of it
Respectively by mechanical compound and outsourcing bonding connection carbon steel tubing, generally it is not considered, so that composite bimetal pipe is in severe ring
It is likely difficult to meet the requirement of mechanical property under border.
Utility model content
The purpose of this utility model is to overcome the shortcomings of prior art, provide a kind of carbon steel-concrete/water
The compound submarine pipeline structure of cement mortar-stainless steel, the utility model are remarkably improved the mechanical property of pipeline entirety and corrosion-resistant
Property, and have both thermal insulation property.
To achieve the above object, the technical solution adopted in the utility model is as follows:
The utility model proposes a kind of carbon steel-concrete/compound submarine pipeline of cement mortar-stainless steel, feature
It is, by being spliced along several compound sub-pipes that the pipeline is axially set gradually, each compound sub-pipes structure is identical,
Including the outer layer carbon steel tubing and inner layer stainless steel tube placed with circular cross section and with one heart, the outer layer carbon steel tubing and interior
Fill concrete or cement mortar form the sandwich with circular cylindrical cross-section between layer stainless steel tube.
Further, it is connected in the following way between the adjacent two compound sub-pipes: two compound sons of junction
The inner layer stainless steel tube axial length of pipeline exceeds the first length of outer layer carbon steel tubing and sandwich, inner layer stainless steel tube pair
Using circumferential welding after standard；Two connection structures of a length of 2 times of first length are respectively overlay in the internal layer stainless steel of junction
Two outside of pipe, each connection structure is by the interior layer concrete or cement mortar semicircular ring and outer layer carbon steel semicircular ring placed with one heart
It is integrally formed, and is closely connect on the outside of the inner layer stainless steel tube of the inside and junction of interior layer concrete or cement mortar semicircular ring
Touching；Axial welding is carried out after two outer layer carbon steel semicircular rings are aligned；By be welded two outer layer carbon steel semicircular rings and
Circumferential welding is carried out after the outer layer carbon steel tubing alignment of the compound sub-pipes in two sides.
The utility model has the following beneficial effects: the compound action of sandwich concrete or cement mortar and outer and inner tube, can show
Write the mechanical property for improving pipeline entirety；The material property of inner layer stainless steel tube provides excellent corrosion resistance；Using coagulation
Soil or cement mortar provide certain thermal insulation property；Inner layer pipe weld seam is covered by concrete or cement mortar, it can be with
Effectively improve the fatigue behaviour of commissure inner layer stainless steel tube.The hollow sandwich steel pipe coagulation of the internal layer stainless steel of the utility model
Native submarine pipeline structure can be applied to Service Environment badly and in the marine environment of oil gas corrosion.
Detailed description of the invention
Fig. 1 is the cross-sectional view of compound sub-pipes in the utility model embodiment；
Fig. 2 is the connection schematic diagram of adjacent two compound sub-pipes in the utility model embodiment.
Specific embodiment
The utility model is further described below in conjunction with drawings and examples as follows:
A kind of carbon steel-concrete/compound submarine pipeline of cement mortar-stainless steel of the utility model embodiment, by edge
Several compound sub-pipes that the pipeline is axially set gradually are spliced, and each compound sub-pipes structure is identical, cross section ginseng
See Fig. 1, includes the outer layer carbon steel tubing 1 and inner layer stainless steel tube 3 that there is circular cross section and place with one heart, outer layer carbon steel
Fill concrete or cement mortar form the sandwich 2 with circular cylindrical cross-section between pipe 1 and inner layer stainless steel tube 3.
1 diameter of outer layer carbon steel tubing is at 6-60 cuns, and diameter and wall ratio are less than or equal to 45, the minimum value of diameter and wall ratio
It is determined by economy and Product Process, generally higher than 15.1 diameter of outer layer carbon steel tubing is with 3 diameter ratio of inner layer stainless steel tube
0.25~0.75.Filler is concrete or cement mortar, and 2 thickness of sandwich is more than or equal to 30mm, 2 thickness of sandwich
Maximum value meet 1 diameter of outer layer carbon steel tubing and 3 diameter of inner layer stainless steel tube compares value range.When Sandwich filling concrete
When, generally require 2 thickness of sandwich more than or equal to 3 times of aggregate size in concrete.3 wall thickness of inner layer stainless steel tube is not less than
2mm.1 diameter D of outer layer carbon steel tubingoWith its wall thickness toRatio Do/toLess than 3 diameter D of inner layer stainless steel tubeiWith its wall thickness ti's
Ratio Di/ti, to ensure under axis pressure Ultimate Loads, outer layer carbon steel tubing reaches its limit axial direction prior to inner layer stainless steel tube
Bearing capacity.
Further, the connection type in the utility model embodiment between adjacent two compound sub-pipes is as shown in Fig. 2, even
3 axial length of inner layer stainless steel tube of two compound sub-pipes at the place of connecing exceeds outer layer carbon steel tubing 1 and sandwich 2 about
200-400mm (is drafted, the present embodiment 250mm) according to concrete engineering, and inner layer stainless steel tube 3 is welded after being aligned using circumferential direction a,
Two connection structures of long about 400-800mm (being drafted according to concrete engineering, the present embodiment 500mm) are respectively overlay in company
3 liang of outsides of inner layer stainless steel tube at place are connect, two connection structures are by the interior layer concrete or cement mortar semicircle placed with one heart
Ring 4 and outer layer carbon steel semicircular ring 5 (size of the outer layer carbon steel semicircular ring is equal sized with two sides outer layer carbon steel tubing)
It is integrally formed, and 3 outside of inner layer stainless steel tube of the inside and junction of interior layer concrete or cement mortar semicircular ring 4 closely connects
Touching, then axial direction b welding is carried out after two outer layer carbon steel semicircular rings 5 are aligned, finally by be welded two outer layer carbon steel
The outer layer carbon steel tubing 1 of the compound sub-pipes of semicircular ring 5 and two sides carries out circumferential direction c welding after being aligned.
Each building block in the utility model embodiment is all made of commercially available material and is obtained by conventional fabrication process,
In, concrete is using any one in normal concrete, lightweight aggregate concrete or regeneration concrete.
The above is only the preferred embodiment of the utility model only, and the non-limiting protection scope of the utility model,
Any modification, equivalent substitution, improvement and etc. done within the spirit and principle of the utility model, the sheet for including are practical new
In the protection scope of type.
Claims (2)
1. a kind of carbon steel-concrete/compound submarine pipeline of cement mortar-stainless steel, which is characterized in that by along pipeline axial direction
Several the compound sub-pipes set gradually are spliced, and each compound sub-pipes structure is identical, include having circular cross section
And the outer layer carbon steel tubing and inner layer stainless steel tube placed with one heart, it is filled between the outer layer carbon steel tubing and inner layer stainless steel tube
Concrete or cement mortar form the sandwich with circular cylindrical cross-section；
Junction between the adjacent two compound sub-pipes, the inner layer stainless steel tube axial length of two compound sub-pipes are super
The first length of outer layer carbon steel tubing and sandwich out passes through circumferential welding between inner layer stainless steel tube；And the internal layer is stainless
Be covered each by two connection structures of a length of 2 times of first length on the outside of steel pipe two, each connection structure by placing with one heart in
Layer concrete or cement mortar semicircular ring and outer layer carbon steel semicircular ring are integrally formed, and interior layer concrete or cement mortar semicircle
It is in close contact on the outside of the inside of ring and the inner layer stainless steel tube of junction, passes through axis between two outer layer carbon steel semicircular rings
To welding, pass through circumferential weldering between the outer layer carbon steel tubing of two compound sub-pipes of the outer layer carbon steel semicircular ring and two sides
It connects.
2. carbon steel-concrete/compound submarine pipeline of cement mortar-stainless steel according to claim 1, feature exist
In the value of first length is 200-400mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821068997.4U CN208664509U (en) | 2018-07-02 | 2018-07-02 | A kind of carbon steel-concrete/compound submarine pipeline of cement mortar-stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821068997.4U CN208664509U (en) | 2018-07-02 | 2018-07-02 | A kind of carbon steel-concrete/compound submarine pipeline of cement mortar-stainless steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208664509U true CN208664509U (en) | 2019-03-29 |
Family
ID=65826665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821068997.4U Active CN208664509U (en) | 2018-07-02 | 2018-07-02 | A kind of carbon steel-concrete/compound submarine pipeline of cement mortar-stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208664509U (en) |
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2018
- 2018-07-02 CN CN201821068997.4U patent/CN208664509U/en active Active
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