CN206572141U - One kind is used for individual layer seabed thermal-insulated counterweight pipe joint repaired mouth structure - Google Patents
One kind is used for individual layer seabed thermal-insulated counterweight pipe joint repaired mouth structure Download PDFInfo
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- CN206572141U CN206572141U CN201720011343.7U CN201720011343U CN206572141U CN 206572141 U CN206572141 U CN 206572141U CN 201720011343 U CN201720011343 U CN 201720011343U CN 206572141 U CN206572141 U CN 206572141U
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- repaired mouth
- individual layer
- pipe joint
- insulated
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Abstract
It is used for individual layer seabed heat-preserving counterbalance pipe repaired mouth structure the utility model discloses one kind, is made up of repaired mouth body, the repaired mouth body includes a pair of split type ring-type half-watts being made up of polyurethane foam；Every described half-watt one end is provided with convex portion, and its other end is provided with recess；Equidistantly contact site is provided with the every half-watt inner periphery；Through hole more than at least three is longitudinally placed equidistant at the semi-ring centre of surface, the invention improves submarine pipe joint corrosion-resistant thermal insulation effect and intensity, reduces submarine pipeline interface fails rate.
Description
Technical field
The utility model is applied to the technical field of seabed spraying polyurethane single-layer heat-preserving counterbalance pipe field joint repaired mouth, especially
It is related to a kind of for individual layer seabed thermal-insulated counterweight pipe joint repaired mouth structure.
Background technology
The pipeline of oil and natural gas is the important step that development of oil industry is supplied with energy market.Different from land
Ground oil gas pipeline, benthal oil-gas pipeline long service Yu Haiyang cold water environment, (such as contains for the crude oil of some higher solidities
Wax, containing the high condensation point crude oil such as colloid), in pipe conveying procedure, if do not taken special measure, when temperature is reduced to certain value
When, will necessarily be because of the solidifying pipe of crude oil wax, or under the conditions of high-pressure natural gas, make gas hydrate to be separated out like ice crystal form,
Cause the accidents such as line clogging.Therefore submarine pipeline usually requires to be incubated.
High-density polyethylene external protective pipe RPUF prefabricated thermal insulation counterweight tube, i.e. conventional monolayers thermal-insulated counterweight
Pipe, substitutes outer steel pipe using concrete weighted coating, can save about 2/3rds steel and heavy anticorrosive material, marine pipe-laying
Welding job amount is small, and interface time is short (about the 1/3 of double steel structure), and marine laying speed is improved to greatest extent,
Pipeline system cost is reduced, becomes conventional submarine pipeline form, but the utilidor end of the technological forming needs hand
Dynamic to install tarpaulin, installation quality is difficult to control to, the weak link often as whole piece off-shore pipeline, comprehensive indices, should
The pipeline of technique is applicable the depth of water and is no more than 60m.
As offshore and gas development is very near to deeper water, energy development pipeline engineering company of CNOOC successfully develops
Novel single-layer heat-preserving counterbalance pipe, i.e. ocean spraying polyurethane heat-preserving counterbalance pipe, utilize " spraying " replacement " cast " technique productions to gather
Urethane foam, online winding layer of polyethylene outer jacket, is protected to heat-insulation layer outside heat-insulation layer, and uniformly sprinkling is poly- on surface
Ethene antiskid particles, outermost layer utilizes gunning concrete counterweight.Relative to conventional monolayers heat-preserving counterbalance pipe, spraying polyurethane insulation
Counterweight tube heat insulating polyurethane foam density is uniform, and intensity is high, and end sealing uses one-shot forming technique, and pipe end is applied with main body
Layer is consistent, and water resistance is excellent, is applicable the depth of water up to 100m.But polyurethane coating insulating tube is applied to sea-bottom oil-gas
The mobility of conveying ensures engineering, while ensuring the heat-insulating property and sealing property of node location, then still faces insulation pipe node
The globality waterproof problem of opening-supplementing material and structure.
The domestic joint repaired mouth structure for not being directed to seabed spraying polyurethane heat-preserving counterbalance pipe also, therefore to coordinate spray at present
The application of polyurethane heat-insulation counterweight tube is applied, it is necessary to develop the node patch technology suitable for the novel heat insulation counterweight tube, to realize
Position of joints good waterproof sealing and heat insulation effect.
The content of the invention
There is technical problem for prior art, the utility model provides a kind of for individual layer seabed heat-preserving counterbalance pipe repaired mouth
Structure and its construction method, the utility model improve submarine pipe joint corrosion-resistant thermal insulation effect and intensity, reduce Submarine Pipeline
Pipeline joint crash rate.
In order to solve technical problem present in prior art, the utility model, which is adopted the following technical scheme that, to be practiced：
One kind is used for individual layer seabed heat-preserving counterbalance pipe repaired mouth structure, is made up of repaired mouth body, and the repaired mouth body includes one
To the split type ring-type half-watt being made up of polyurethane foam；Every described half-watt one end is provided with convex portion, and its other end is provided with
Recess；Equidistantly contact site is provided with the every half-watt inner periphery；Longitudinally be placed equidistant at the semi-ring centre of surface to
Few more than 3 through hole.
Half-watt radial direction section outer right-angle side structure is rounded corner.
The contact site is bar shaped spininess.
Angle is 90 ° between the contact site.
The utility model beneficial effect：
First, the composite anti-corrosive insulation construction that the utility model is used improves submarine pipe joint corrosion-resistant thermal insulation effect
And intensity, reduce submarine pipeline interface fails rate.
Second, the utility model is simple in construction, easy for installation, improves offshore construction efficiency, reduces materials cost.
Brief description of the drawings
Fig. 1 is that the utility model one kind is used for individual layer seabed heat-preserving counterbalance pipe repaired mouth structure radial cutaway view.
Fig. 2 is that the utility model one kind is used for half-watt structural representation in the heat-preserving counterbalance pipe repaired mouth structure of individual layer seabed.
Fig. 3 is that the utility model one kind is used for individual layer seabed heat-preserving counterbalance pipe repaired mouth structure axial section.
Embodiment
The utility model is made below in conjunction with the accompanying drawings and being explained：
As shown in figure 1, the utility model provides a kind of for individual layer seabed heat-preserving counterbalance pipe repaired mouth structure, by repaired mouth body
Constitute, described device body includes a pair of split type ring-type half-watts (11,12) being made up of polyurethane foam；The every half-watt
(11,12) one end is provided with convex portion (11a, 12a), and its other end is provided with recess (11b, 12b)；The every half-watt inner periphery
On be equidistantly provided with contact site (111,121)；As shown in Fig. 2 being longitudinally placed equidistant at least three at the semi-ring centre of surface
Steam vent (112,122) above.The contact site (111,121) is spininess or point-like.The contact site (111,121) it
Between angle be 90 °.As shown in figure 1, the utility model is used for the joint repaired mouth structure of seabed heat-preserving counterbalance pipe 2, the insulation is matched somebody with somebody
Pipe 2 is made up of the steel pipe with anticorrosive coat 21, heat-insulation layer 22 and concrete layer 3 again, and the anticorrosive coat 21 is the excircle in steel pipe
Upper coating uses clinkery epoxy powder or solvent-free liquid epoxy anti-corrosion material；The heat-insulation layer 22 is the upper surface spray in anti-layer
Apply polyurethane material.
In order to solve to exist in the prior art technical problem, the utility model also provides following technical scheme and is practiced：
A kind of method constructed for individual layer seabed thermal-insulated counterweight pipe joint repaired mouth structure, comprises the following steps：The
One, two prefabricated ports of counterweight tube 2 with heat-insulation layer 22 and anticorrosive coat 21 are docked by welding, and in counterweight tube
Joint anticorrosive coating 6；The internal contact site of adjustment half-watt (11,12) is allowed to fully contact with the interface of counterweight tube 2, every
Outer ring surface diameter between concrete layer 3 on the heat-insulation layer 22 and counterweight tube of the counterweight tube 2 is wound by polythene material structure
Into the first overcoat 4, the first waterproof adhesive layer 5 is provided with the first overcoat 4；Second, counterweight tube 2 after welding connects
The half-watt (11,12) of two panels is docked at mouthful, it is ensured that the two ends convexity recess grafting of two panels half-watt completely form one；3rd,
The second waterproof adhesive layer 7 is coated between the gap of half-watt (11,12) and the interface of counterweight tube 2；4th, half-watt (11,12) it is outside with
The second overcoat 8 of cast urethane elastomer formation, makes elastic polyurethane in casting process in the cavity of the formation of concrete layer 3
Body fills up whole interface cavity, it is ensured that the second overcoat 8 is concordant with the concrete layer 3 of interface.
As shown in figure 3, the utility model practice of construction process is, two prefabricated to have heat-insulation layer 22 and anticorrosive coat 21
The docking of counterweight tube 22 is completed by welding, and node anticorrosive coat 6 is coated on counterweight tube joint；One and half are fastened outside it
Watt (11,12), ensure the bumps (11a, 12b) at every half-watt two ends during fastening；(11b, 12a) portion is aligned；Described half
Watt pass through the gluing glutinous waterproof adhesive layer 7 of waterproof sealing between (11,12) and counterweight tube 2；Heat-insulation layer 22 outside counterweight tube 2 with
Counterweight tube is wound by polyethylene between concrete matched layer and constitutes the first overcoat 4；It is polyethylene outer peripheral face in the first overcoat 4
Wind twice interface waterproof gasket cement and constitute the first adhesive layer 5.In the outside cavity with the formation of concrete layer 3 of half-watt (11,12)
The second overcoat 8 of interior cast urethane elastomer formation, makes polyurethane elastomer fill up whole interface empty in casting process
Chamber, it is ensured that the second overcoat 8 is concordant with the concrete layer 3 of interface.The polyurethane elastomer have high density, high intensity and
Compared with low water absorption, therefore being arranged on seabed can prevent moisture from penetrating into, and protect internal structure not by sea water intrusion.
Individual layer counterweight tube composite coating, including the anticorrosive coat of steel pipe periphery, spraying are sequentially coated at from steel pipe from inside to outside
Polyurethane insulation coating, the spraying polyurethane insulating tube that winding protective polyethylene layer and concrete weighted coating are constituted, shown spraying gathers
The joint of urethane heat-insulation layer is from the outer ring surface of described concrete weighted coating, the weight coating section, outside the winding polyethylene
Anchor ring is until shown exposed steel pipe outer ring surface formation cavity sets continuous repaired mouth structure.
Examples detailed above is merely to illustrate the utility model, wherein the structure of each part, material, connected mode are all to have
Changed, every equivalents carried out in the utility model technical foundation and improvement should not be excluded in this practicality
Outside new protection domain.
Claims (4)
1. one kind is used for individual layer seabed thermal-insulated counterweight pipe joint repaired mouth structure, it is made up of repaired mouth body, it is characterised in that described to mend
Mouth body includes a pair of split type ring-type half-watts being made up of polyurethane foam；Every described half-watt one end is provided with convex portion, its
The other end is provided with recess；Equidistantly contact site is provided with the every half-watt inner periphery；It is longitudinal at the semi-ring centre of surface
It is placed equidistant through hole more than at least three.
2. it is according to claim 1 a kind of for individual layer seabed thermal-insulated counterweight pipe joint repaired mouth structure, it is characterised in that institute
Half-watt radial direction section outer right-angle side structure is stated for rounded corner.
3. it is according to claim 1 a kind of for individual layer seabed thermal-insulated counterweight pipe joint repaired mouth structure, it is characterised in that institute
Contact site is stated for bar shaped spininess.
4. it is according to claim 1 a kind of for individual layer seabed thermal-insulated counterweight pipe joint repaired mouth structure, it is characterised in that institute
State between contact site is 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720011343.7U CN206572141U (en) | 2017-01-05 | 2017-01-05 | One kind is used for individual layer seabed thermal-insulated counterweight pipe joint repaired mouth structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720011343.7U CN206572141U (en) | 2017-01-05 | 2017-01-05 | One kind is used for individual layer seabed thermal-insulated counterweight pipe joint repaired mouth structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206572141U true CN206572141U (en) | 2017-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720011343.7U Active CN206572141U (en) | 2017-01-05 | 2017-01-05 | One kind is used for individual layer seabed thermal-insulated counterweight pipe joint repaired mouth structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641561A (en) * | 2017-01-05 | 2017-05-10 | 中海油能源发展股份有限公司 | Field joint structure for single-layer seabed heat preservation balance weight pipe joint and construction method thereof |
-
2017
- 2017-01-05 CN CN201720011343.7U patent/CN206572141U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641561A (en) * | 2017-01-05 | 2017-05-10 | 中海油能源发展股份有限公司 | Field joint structure for single-layer seabed heat preservation balance weight pipe joint and construction method thereof |
| CN106641561B (en) * | 2017-01-05 | 2019-08-27 | 海油发展珠海管道工程有限公司 | One kind being used for single layer seabed thermal-insulated counterweight pipe fitting repaired mouth structure and its construction method |
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