CN209781908U - Non-bonding flexible pipe for deep water and connecting joint thereof - Google Patents
Non-bonding flexible pipe for deep water and connecting joint thereof Download PDFInfo
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- CN209781908U CN209781908U CN201821805885.2U CN201821805885U CN209781908U CN 209781908 U CN209781908 U CN 209781908U CN 201821805885 U CN201821805885 U CN 201821805885U CN 209781908 U CN209781908 U CN 209781908U
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Abstract
The utility model discloses a deep water is with non-bonding flexbile duct and attach fitting thereof, characteristics are including the flexbile duct body, the flexbile duct body includes the inside metal skeleton layer that outwards sets gradually, the inner liner, the metal compressive layer, the wearing layer, the tensile armor, the outer protective layer, wearing layer and insulating layer, the metal strap winding that the metal skeleton layer formed by S type subassembly interlocking back forms, the outer wall that makes the metal skeleton layer has the external screw thread, the metal compressive layer is formed by the metal strap winding that carbon steel Z shape subassembly interlocking formed, the tensile armor includes metal inlayer tensile armor and metal outer tensile armor, metal inlayer tensile armor and the reverse winding setting of metal outer tensile armor. The advantage is that simple structure, tensile and compressive capacity are all comparatively superior, are suitable for using in deep water.
Description
Technical Field
The utility model relates to an ocean oil engineering field especially relates to a deep water is with non-bonding flexible pipe and attach fitting thereof.
background
In the ocean oil and gas exploitation, the ocean pipeline connects the oil, gas or drilling platform on the sea with the oil storage transfer station or the land processing terminal, so that each link of the offshore work and the pipeline form an organic whole which is mutually matched and coordinated. The conventional pipeline for transporting petroleum or natural gas at present generally comprises a steel pipe and a flexible pipe, and the flexible pipe has the advantages of adaptability to different transportation environments, deformation resistance, corrosion resistance, recoverability, convenience in installation and the like, so that the flexible pipe is widely applied, gradually replaces the steel pipe, and becomes a mainstream marine transportation pipeline.
The flexible pipe that can be used to environment under water at present and lay mainly has two kinds, does respectively: non-adhesive flexible pipes and adhesive flexible pipes. And the device puts higher requirements on the flexible pipe aiming at the arrangement and use in the deep water environment. At present, an existing flexible pipe is generally made of a multilayer composite material, for example, a flexible composite oil pipe disclosed in the publication No. CN102889437A, a polymer inner pipe layer, a pressure resistant layer for resisting internal pressure, a tensile layer for resisting external tensile force, a fixing layer for fixing the tensile layer, and a polymer outer pipe layer are sequentially arranged from inside to outside, wherein the pressure resistant layer is a fiber woven layer, 2 to 4 single-layer fiber woven layers can be arranged according to use requirements, and the tensile layer is a fiber layer which is made of one or more of polyester fiber, nylon fiber, glass fiber, polyethylene fiber, aramid fiber, basalt fiber, polyester fiber, and carbon fiber and is arranged in parallel along the extending direction of the polymer inner pipe layer. Above-mentioned flexible tube bulk strength is not enough, breaks easily in the use, and adopts the tensile layer tensile strength that the fibre that follows body extending direction parallel arrangement constitutes weaker, and the compressive strength on compressive layer is relatively poor, uses it in the deep water, because the comparatively complicated operating mode in deep water, the flexible tube of this structure takes place the damage under the condition of the outer atress of while inside easily to lead to the leakage of oil gas, cause great environmental disaster.
Disclosure of Invention
The utility model aims to solve the technical problem that a deep water is with non-bonding flexible pipe and this flexible pipe joint for simple structure, tensile and compressive capacity all are comparatively superior, are suitable for in deep water use is provided.
The utility model provides a technical scheme that above-mentioned technical problem adopted does:
The flexible pipe comprises a flexible pipe body, wherein the flexible pipe body comprises a metal framework layer, an inner liner, a metal compression layer, an abrasion-resistant layer, a tensile armor layer, an outer protective layer, an abrasion-resistant layer and a heat-insulating layer which are sequentially arranged from inside to outside, the metal framework layer is formed by winding a metal belt formed by interlocking S-shaped components, so that the outer wall of the metal framework layer is provided with external threads, the metal compression layer is formed by winding a metal belt formed by interlocking Z-shaped components of carbon steel, the tensile armor layer comprises a metal inner tensile armor layer and a metal outer tensile armor layer, and the metal outer tensile armor layer is wound outside the metal inner tensile armor layer.
The metal inner layer tensile armor layer and the metal outer layer tensile armor layer are reversely wound. The structural design of the tensile armor layer further improves the overall strength of the pipeline.
The lining layer is made of PVDF. The lining layer is made of PVDF (polyvinylidene fluoride) materials, so that the flexible pipe has the characteristics of high strength and corrosion resistance.
The wear-resistant layer, the outer protective layer and the wear-resistant layer are made of nylon. The nylon material is wear-resistant and wear-resistant, and has low cost.
A connection joint of a non-bonded flexible pipe for deep water comprises a joint body and a joint outer sleeve, wherein a left-right through fluid channel is arranged in the center of the joint body, the joint outer sleeve comprises a sleeve, a mounting flange is coaxially arranged on the joint body, the mounting flange divides the joint body into a mounting section and a connecting section from front to back, the mounting section is used for coating and mounting a tensile armor layer, the mounting flange is detachably and hermetically connected with the front end of the sleeve, the mounting section extends into the sleeve, the rear end of the sleeve is detachably and hermetically connected with a rear cover, a left-right through extending hole for the flexible pipe body to pass through is formed in the center of the rear cover, a first mounting hole for the metal framework layer to extend into for mounting is formed in the rear end of the mounting section, the first mounting hole and the fluid channel are coaxially arranged, an internal thread matched with the external thread is arranged in the first mounting hole, and a sealing assembly used for sealing the end head of the flexible pipe body extending into the sleeve is arranged in the sleeve. The attach fitting of above-mentioned structure, moreover, the steam generator is simple in structure, the installation is dismantled conveniently, through external screw thread and internal screw-threaded cooperation, realize that the metal skeleton layer is connected the installation with the erection segment steadily, guarantee at least during the installation in the metal skeleton layer structure screw in of round or two circles to this erection segment, and scribble epoxy AB glue in gap department and consolidate the laminating and handle, can reduce intraductal high pressure like this and to the direct impact of lining, improve and do not have the pipeline section of anti armoring layer reinforcing part in the joint and can effectively bear higher internal pressure load, make the bulk strength better.
The mounting section comprises a circular table section and a cylindrical section which are sequentially arranged from front to back, the outer diameter of the circular table section is gradually increased from front to back, and the outer diameter of the cylindrical section is equal to the maximum outer diameter of the circular table section. The structure can ensure the stable covering installation of the tensile armor layer.
The rear end of the cylindrical section is provided with a second mounting hole for the inner liner to extend into for mounting, the second mounting hole is coaxially arranged with the first mounting hole, the inner diameter of the second mounting hole is larger than that of the first mounting hole, the sealing assembly comprises a first sealing ring and a second sealing ring, the first sealing ring comprises a first front sealing section and a first rear sealing section which are coaxially arranged from front to back, the outer diameter of the first front sealing section is smaller than that of the first rear sealing section, the first front sealing section extends into the second mounting hole, the front end face of the first rear sealing section is attached to the rear end face of the cylindrical section, the rear portion of the first rear sealing section is provided with a first compression ring for compressing and fixing the first sealing ring, and the second sealing ring comprises a second front sealing section and a second rear sealing section which are coaxially arranged from front to back, the outer diameter of the second front sealing section is larger than that of the second rear sealing section, the front end face of the second front sealing section is attached to the rear end face of the sleeve and is fixedly pressed through the rear cover, and the second rear sealing section extends into the space between the wear-resistant layer and the heat insulation layer. The structure ensures that the flexible pipe body can be better sealed after being connected with the connecting joint, thereby ensuring the stable and safe use of the flexible pipe.
And a second compression ring for compressing the wear-resistant layer is arranged at the rear end of the first compression ring. The flexible pipe is ensured to be stably connected and installed with the connecting joint.
And a third compression ring for compressing the tensile armor layer and a fourth compression ring for compressing the wear-resistant layer are arranged in the sleeve. The flexible pipe is ensured to be stably connected and installed with the connecting joint.
and the front end of the connecting section is coaxially provided with a connecting flange. The connecting flange is used for being connected with external equipment.
Compared with the prior art, the utility model has the advantages of: above-mentioned flexible pipe body simple structure, through the metal skeleton layer, the inner liner, the metal compressive layer, the wearing layer, the tensile armor, the outer protective layer, the flexible pipe body that wearing layer and insulating layer are constituteed, better intensity has, tensile and compressive property are all comparatively superior, the metal skeleton layer is formed by the strap winding that forms behind the S type subassembly interlocking simultaneously, the metal compressive layer is formed by the strap winding that the carbon steel Z shape subassembly interlocking formed, the tensile armor comprises the metal inlayer tensile armor and the metal skin tensile armor that the winding set up, make the tensile property of whole pipeline more superior, be suitable for and use in deep water.
Drawings
FIG. 1 is a schematic sectional view of a flexible pipe according to the present invention;
FIG. 2 is an enlarged view of the structure at B in FIG. 1;
FIG. 3 is a schematic perspective view of the joint of the present invention;
FIG. 4 is a schematic cross-sectional view of the connection joint of the present invention;
FIG. 5 is a schematic view of the seal assembly and various clamp rings of FIG. 4 shown removed;
FIG. 6 is a schematic structural view of the present invention in which a flexible pipe is mounted on a connection joint;
FIG. 7 is an enlarged view of the structure of FIG. 6 at C;
Fig. 8 is an enlarged schematic view of the structure at D in fig. 6.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1 and 2, the non-bonded flexible pipe for deepwater comprises a flexible pipe body a, the flexible pipe body a comprises a metal framework layer a1, an inner liner layer a2, a metal pressure-resistant layer A3, an anti-wear layer a4, a tensile armor layer a5, an outer protective layer A6, an anti-wear layer a7 and a heat-insulating layer A8 which are sequentially arranged from inside to outside, the metal framework layer a1 is formed by winding a metal belt formed by interlocking S-shaped components, the outer wall of the metal framework layer a1 is provided with an external thread a11, the metal pressure-resistant layer A3 is formed by winding a metal belt formed by interlocking carbon steel Z-shaped components, the tensile armor layer a5 comprises a metal inner tensile armor layer a51 and a metal outer tensile armor layer a52, and the metal outer tensile armor layer a52 is wound outside the metal inner tensile armor layer a 51.
In this particular embodiment, the metallic inner tensile armour layer a51 and the metallic outer tensile armour layer a52 are counter-wound. The structural design of the tensile armor layer A5 further improves the strength of the whole pipeline.
In this particular embodiment, inner liner layer a2 is made of PVDF. The lining layer A2 is made of PVDF (polyvinylidene fluoride) material, so that the flexible pipe has high strength and corrosion resistance.
In this particular embodiment, the abrasion resistant layer a4, the outer protective layer a6, and the abrasion resistant layer a7 are made of nylon. The nylon material is wear-resistant and wear-resistant, and has low cost.
As shown in fig. 3 to 8, a connector for a non-bonded flexible pipe for deep water comprises a connector body 1 and a connector jacket, wherein a left-right through fluid channel 101 is arranged in the center of the connector body 1, the connector jacket comprises a sleeve 2, a mounting flange 3 is coaxially arranged on the connector body 1, the connector body 1 is divided into a mounting section 11 and a connecting section 12 from front to back by the mounting flange 3, the mounting section 11 is used for cladding and mounting a tensile armor layer a5, the mounting flange 3 is detachably and hermetically connected with the front end of the sleeve 2, the mounting section 11 is inserted into the sleeve 2, the rear end of the sleeve 2 is detachably and hermetically connected with a rear cover 4, an insertion hole 41 which is left-right through and is used for the flexible pipe body a to pass through is arranged in the center of the rear cover 4, a first mounting hole 111 which is used for the metal framework layer a1 to insert into and mount is arranged at the rear end of the mounting section 11, the first mounting hole 111 is coaxially arranged with the fluid passage 101, an internal thread 1111 matched with the external thread a11 is arranged in the first mounting hole 111, and a sealing assembly for sealing the end of the flexible pipe body a extending into the sleeve 2 is arranged in the sleeve 2. The attach fitting of above-mentioned structure, moreover, the steam generator is simple in structure, the installation is dismantled conveniently, cooperation through external screw thread A11 and internal thread 1111, realize that metal casing ply A1 is connected the installation with erection section 11 steadily, guarantee at least during the installation in the metal casing ply A1 structure screw in of round or two circles is to this erection section 11, and scribble epoxy AB glue in gap department and consolidate the laminating processing, can reduce intraductal high pressure like this and to lining A2's direct impact, improve the pipeline section that does not have anti armoring layer A5 reinforcing part in the joint and can effectively bear higher internal pressure load, make the bulk strength better.
In this embodiment, the mounting section 11 includes a circular truncated cone section 1101 and a cylindrical section 1102 sequentially arranged from front to back, an outer diameter of the circular truncated cone section 1101 gradually increases from front to back, and an outer diameter of the cylindrical section 1102 is equal to a maximum outer diameter of the circular truncated cone section 1101. The above structure ensures stable covering installation of the tensile armor layer a 5.
In this embodiment, the rear end of the cylindrical section 1102 is provided with a second mounting hole 1112 for inserting and mounting the liner layer a2, the second mounting hole 1112 is coaxially arranged with the first mounting hole 111, and the inner diameter of the second mounting hole 1112 is larger than the inner diameter of the first mounting hole 111, the seal assembly comprises a first seal ring 5 and a second seal ring 6, the first seal ring 5 comprises a first front seal section 51 and a first rear seal section 52 coaxially arranged from front to back, the outer diameter of the first front seal section 51 is smaller than the outer diameter of the first rear seal section 52, the first front seal section 51 is inserted and arranged in the second mounting hole 1112, the front end surface of the first rear seal section 52 is arranged at the rear end surface of the cylindrical section 1102 in a fitting manner, the rear portion of the first rear seal section 52 is provided with a first compression ring 7 for compressing and fixing the first seal ring 5, the second seal ring 6 comprises a second front seal section 61 and a second rear seal section 62 coaxially arranged from front to back, the external diameter of the second front sealing section 61 is greater than the external diameter of the second rear sealing section 62, the front end face of the second front sealing section 61 is attached to the rear end face of the sleeve 2 and is pressed and fixed through the rear cover 4, and the second rear sealing section 62 extends into the space between the wear-resistant layer A7 and the heat-insulating layer A8. The structure ensures that the flexible pipe body A can be better sealed after being connected with the connecting joint, thereby ensuring the stable and safe use of the flexible pipe.
In this particular embodiment, the rear end of first clamp ring 7 is provided with second clamp ring 8 for pressing wear-resistant layer a 4. The flexible pipe is ensured to be stably connected and installed with the connecting joint.
In this particular embodiment, a third compression ring 9 for compressing tensile armour layer a5 and a fourth compression ring 10 for compressing wear layer a7 are provided within the sleeve 2. The flexible pipe is ensured to be stably connected and installed with the connecting joint.
in this embodiment, the front end of the connecting section 12 is coaxially provided with a connecting flange 121. The connection flange 121 is used for connecting with an external device.
Claims (10)
1. The flexible pipe is characterized by comprising a flexible pipe body, wherein the flexible pipe body comprises a metal framework layer, an inner lining layer, a metal compression layer, an abrasion-resistant layer, a tensile armor layer, an outer protective layer, an abrasion-resistant layer and a heat-insulating layer which are sequentially arranged from inside to outside, the metal framework layer is formed by winding a metal belt formed by interlocking S-shaped components, the outer wall of the metal framework layer is provided with external threads, the metal compression layer is formed by winding a metal belt formed by interlocking carbon steel Z-shaped components, the tensile armor layer comprises a metal inner tensile armor layer and a metal outer tensile armor layer, and the metal outer tensile armor layer is wound outside the metal inner tensile armor layer.
2. the flexible pipe of claim 1, wherein said tensile armour layers are oppositely wound.
3. The flexible pipe of claim 1, wherein the inner lining layer is made of PVDF.
4. The flexible pipe of claim 1, wherein the abrasion resistant layer, the outer protective layer and the abrasion resistant layer are made of nylon.
5. a joint of a non-bonded flexible pipe for deep water according to claim 1, comprising a joint body and a joint jacket, wherein a fluid passage is formed in the center of the joint body, the fluid passage is formed through the joint body, the joint jacket comprises a sleeve, a mounting flange is coaxially arranged on the joint body, the joint body is divided into a mounting section and a connecting section by the mounting flange from front to back, the mounting section is used for cladding and mounting the tensile armor layer, the mounting flange is detachably and hermetically connected with the front end of the sleeve, the mounting section extends into the sleeve, the rear end of the sleeve is detachably and hermetically connected with a rear cover, a left and right through extending hole for the flexible pipe body to pass through is formed in the center of the rear cover, and a first mounting hole for the metal framework layer to extend into and mount is formed in the rear end of the mounting section, the first mounting hole and the fluid channel are coaxially arranged, an internal thread matched with the external thread is arranged in the first mounting hole, and a sealing assembly used for sealing the end head of the flexible pipe body extending into the sleeve is arranged in the sleeve.
6. the coupling joint of a non-bonded flexible pipe for deep water as claimed in claim 5, wherein the installation section comprises a truncated cone section and a cylindrical section which are sequentially arranged from front to back, the outer diameter of the truncated cone section is gradually increased from front to back, and the outer diameter of the cylindrical section is equal to the maximum outer diameter of the truncated cone section.
7. A joint of non-bonded flexible pipe for deep water according to claim 6, wherein the rear end of the cylindrical section is provided with a second mounting hole for inserting and mounting the inner liner, the second mounting hole is coaxially arranged with the first mounting hole, the inner diameter of the second mounting hole is larger than the inner diameter of the first mounting hole, the sealing assembly comprises a first sealing ring and a second sealing ring, the first sealing ring comprises a first front sealing section and a first rear sealing section which are coaxially arranged from front to back, the outer diameter of the first front sealing section is smaller than that of the first rear sealing section, the first front sealing section is inserted and arranged in the second mounting hole, the front end surface of the first rear sealing section is attached and arranged on the rear end surface of the cylindrical section, and the rear part of the first rear sealing section is provided with a first fastening ring for fastening the first sealing ring, the second sealing ring comprises a second front sealing section and a second rear sealing section which are coaxially arranged from front to back, the outer diameter of the second front sealing section is larger than that of the second rear sealing section, the front end face of the second front sealing section is attached to the rear end face of the sleeve and is fixedly pressed by the rear cover, and the second rear sealing section extends into the space between the wear-resistant layer and the heat-insulating layer.
8. The joint for connecting flexible pipe non-bonded for deep water according to claim 7, wherein a second compression ring for compressing said abrasion resistant layer is provided at a rear end of said first compression ring.
9. a joint of unbonded flexible pipe for deep water as claimed in claim 5, wherein a third clamp ring for clamping said tensile armour layer and a fourth clamp ring for clamping said wear layer are provided in said sleeve.
10. The joint for connecting flexible pipe without adhesion for deep water according to claim 5, wherein the front end of the connecting section is coaxially provided with a connecting flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821805885.2U CN209781908U (en) | 2018-11-02 | 2018-11-02 | Non-bonding flexible pipe for deep water and connecting joint thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821805885.2U CN209781908U (en) | 2018-11-02 | 2018-11-02 | Non-bonding flexible pipe for deep water and connecting joint thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209781908U true CN209781908U (en) | 2019-12-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821805885.2U Active CN209781908U (en) | 2018-11-02 | 2018-11-02 | Non-bonding flexible pipe for deep water and connecting joint thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209781908U (en) |
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2018
- 2018-11-02 CN CN201821805885.2U patent/CN209781908U/en active Active
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