CN217977799U - Long-acting steel skeleton reinforced thermoplastic plastic composite continuous pipe for oil and gas conveying - Google Patents
Long-acting steel skeleton reinforced thermoplastic plastic composite continuous pipe for oil and gas conveying Download PDFInfo
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- CN217977799U CN217977799U CN202221963198.XU CN202221963198U CN217977799U CN 217977799 U CN217977799 U CN 217977799U CN 202221963198 U CN202221963198 U CN 202221963198U CN 217977799 U CN217977799 U CN 217977799U
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Abstract
The utility model discloses a long-term steel skeleton reinforcing thermoplastic plastic composite coiled tubing is carried to oil gas, include: the anode comprises an inner liner layer, an anode sacrificial layer, an enhancement layer and a protective layer; the inner liner is positioned at the innermost part of the composite pipe and is formed by extrusion molding of thermoplastic polymer materials; the anode sacrificial layer is wound on the outer side of the lining layer and is made of steel wires or low-potential metal alloy materials; the enhancement layer is wound on the outer side of the anode sacrificial layer and is made of a steel strip coated with low-potential metal alloy materials, and the potential of the low-potential metal alloy materials adopted by the enhancement layer is lower than that of the steel strip; the inner wall of the protective layer is fixedly connected with the reinforcing layer, and the protective layer is made of resin with wear resistance. The composite pipe has the advantages of reasonable design, simple structure, good corrosion resistance, strong impact resistance, long service life and the like.
Description
Technical Field
The utility model relates to an oil gas transport technical field, in particular to long-term steel skeleton reinforcing thermoplastic composite coiled tubing is carried to oil gas.
Background
Pipelines bear important responsibilities for transporting oil and gas, and therefore, the quality and service life of pipelines affect the development of the whole industry. Chemical or electrochemical reactions are the main cause of corrosion of pipes, and to improve the service life of pipes, chemical and electrochemical corrosion must be prevented and slowed down.
Based on the 4 th part of the nonmetal composite pipe for petroleum and natural gas industry: continuous pipe related to steel skeleton reinforced thermoplastic composite continuous pipe (SY/T6662.4) standard is used for conveying water vapor and CO when high gas-oil ratio or natural gas medium is conveyed 2 、H 2 S gas molecules are gathered in annular spaces of the lining layer and the protective layer of the continuous pipe through the permeation action to form an acid corrosion environment, the surface of the metal reinforcing layer material of the continuous pipe is induced to be corroded, the strength of the reinforcing layer is reduced, and the problem of pipe explosion failure of the continuous pipe is avoided under the action of oil gas gathering and internal pressure along with the prolonging of the service time of the pipeline.
After the oil gas conveying pipeline is corroded, leakage of the pipeline can be caused, environmental pollution can be caused after oil gas leakage, potential safety hazards can be caused, oil gas conveyed in the pipeline is inflammable and explosive articles, and in case of explosion accidents, serious casualties and property loss can be caused.
At present, two ways of pipeline protection are generally adopted, one way is to coat a coating or a plating layer on the surface of a metal reinforcing layer, but the process is difficult to process and manufacture a continuous pipe taking a metal belt or a steel wire rope as a reinforcing body, and the pipe manufacturing cost is greatly increased; another way is to use sacrificial anode protection. Therefore, the steel skeleton reinforced thermoplastic composite continuous pipe with the sacrificial anode system is explored and designed, and has remarkable economic benefit for ensuring the intrinsic safety and long-acting application of the continuous pipe.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a long-term steel skeleton reinforcing thermoplastic composite coiled tubing is carried to oil gas solves one or more among the above-mentioned prior art problem.
On the one hand, the utility model provides a pair of long-term steel skeleton reinforcing thermoplastic composite coiled tubing is carried to oil gas, include: the device comprises an inner liner layer, an anode sacrificial layer, an enhancement layer and a protective layer;
the lining layer is positioned at the innermost part of the composite pipe and is formed by extrusion molding of a thermoplastic polymer material;
the anode sacrificial layer is wound on the outer side of the lining layer and is made of steel wires or low-potential metal alloy materials;
the enhancement layer is wound outside the anode sacrificial layer and is made of a steel strip coated with a low-potential metal alloy material, and the potential of the low-potential metal alloy material adopted by the enhancement layer is lower than that of the steel strip;
the inner wall of the protective layer is fixedly connected with the reinforcing layer, and the protective layer is made of resin with wear resistance;
wherein: the anode sacrificial layer is made of steel wires or low-potential metal alloy materials, and the potential of the steel wires or the low-potential metal alloy materials is lower than that of the steel strip of the enhancement layer.
In certain embodiments, the thermoplastic polymer material is selected from one or more of polyethylene, polypropylene, polyvinylidene fluoride, polydodecalactam, polyphenylene sulfide.
In some embodiments, the anode sacrificial layer may be tape wound, wire wound, or embedded in the reinforcing layer as a sacrificial anode strip.
In certain embodiments, the low potential metal alloy material is selected from a zinc alloy material or a magnesium alloy material.
In certain embodiments, the chemical composition of the zinc alloy material is Zn-Al-Cd-Fe-Pb-Cu.
In certain embodiments, the zinc alloy material is, in weight percent, al:0.1-0.5%, cd:0.025-0.07%, fe:0.005%, pb:0.006%, cu:0.006 percent and the balance of Zn.
In certain embodiments, the magnesium alloy material has a chemical composition of Al-Mn-Cu-Si-Ni-Fe-Mg.
In certain embodiments, the magnesium alloy material is, in weight percent, al:0.01%, mn:0.50-1.30%, cu:0.005%, si:0.05%, ni:0.001%, fe:0.01 percent, and the balance being Mg.
In certain embodiments, the resin having abrasion resistance is polyethylene.
In some embodiments, the thickness of the lining layer is 5 to 7mm, the thickness of the anode sacrificial layer is 3 to 5mm, the thickness of the reinforcing layer is 3 to 5mm, and the thickness of the protective layer is 5 to 7mm.
In certain embodiments, the anodic sacrificial layer is at an angle of 55 ° to the axis of the composite tube and is wrapped around the outside of the innerliner layer.
In certain embodiments, the reinforcing layer is at an angle of 55 ° to the axis of the composite tube and is wrapped around the outside of the anodic sacrificial layer.
On the other hand, the utility model provides a pair of long-term steel skeleton reinforcing thermoplastic composite coiled tubing is carried to oil gas, include: the anode comprises an inner liner layer, an anode sacrificial layer, an enhancement layer and a protective layer;
the inner lining layer is positioned at the innermost part of the composite pipe and is formed by extrusion molding of thermoplastic polymer materials;
the enhancement layer is wound on the outer side of the lining layer and is made of a steel belt coated with a low-potential metal alloy material;
the anode sacrificial layer is wound on the outer side of the enhancement layer and is made of steel wires or low-potential metal alloy materials;
the inner wall of the protective layer is fixedly connected with the anode sacrificial layer, and the protective layer is made of resin with wear resistance;
wherein: the anode sacrificial layer is made of steel wires or low-potential metal alloy materials, and the potential of the steel wires or the low-potential metal alloy materials is lower than that of the steel strip of the enhancement layer.
In certain embodiments, the thermoplastic polymer material is selected from one or more of polyethylene, polypropylene, polyvinylidene fluoride, polydodecalactam, polyphenylene sulfide.
In some embodiments, the anode sacrificial layer may be tape wound, wire wound, or embedded in the reinforcing layer as a sacrificial anode strip.
In certain embodiments, the low potential metal alloy material is selected from a zinc alloy material or a magnesium alloy material.
In certain embodiments, the zinc alloy material has a chemical composition of Zn-Al-Cd-Fe-Pb-Cu.
In certain embodiments, the zinc alloy material is, in weight percent, al:0.1-0.5%, cd:0.025-0.07%, fe:0.005%, pb:0.006%, cu:0.006 percent and the balance of Zn.
In certain embodiments, the magnesium alloy material has a chemical composition of Al-Mn-Cu-Si-Ni-Fe-Mg.
In certain embodiments, the magnesium alloy material is, in weight percent, al:0.01%, mn:0.50-1.30%, cu:0.005%, si:0.05%, ni:0.001%, fe:0.01 percent, and the balance being Mg.
In certain embodiments, the resin having abrasion resistance is polyethylene.
In some embodiments, the thickness of the lining layer is 5-7 mm, the thickness of the anode sacrificial layer is 3-5 mm, the thickness of the reinforcing layer is 3-5 mm, and the thickness of the protective layer is 5-7 mm.
In certain embodiments, the reinforcement layer is at an angle of 55 ° to the axis of the composite tube and is wrapped around the outside of the inner liner.
In certain embodiments, the anodic sacrificial layer is at an angle of 55 ° to the axial centerline of the composite tube and is wrapped around the outside of the reinforcement layer.
Has the advantages that: the long-acting steel skeleton reinforced thermoplastic plastic composite continuous pipe for oil gas conveying has simple structure and good corrosion resistance. By providing a low-potential metal material in the enhancement layer, corrosion is preferentially promoted so that the enhancement layer is protected from corrosion. And further, the sacrificial anode layer is arranged, so that the steel strip of the enhancement layer can be effectively protected, namely, the low-potential metal alloy material coated outside the unused steel strip of the enhancement layer is protected, the steel strip is equivalent to double-layer safety, and the enhancement layer is protected from being corroded, so that the purpose of prolonging the service life of the composite pipe is achieved. Through the outmost design protective layer at this composite pipe to adopt wear-resisting polyethylene resin as the material of protective layer, can improve composite pipe's bulk strength, make the shock resistance of this pipeline strong. The utility model relates to a from compound coiled tubing of steel skeleton reinforcing thermoplastic of taking sacrificial anode system has apparent economic benefits to the essential safety and the long-term application of guaranteeing the coiled tubing.
Drawings
Fig. 1 is a schematic view of a long-acting steel skeleton reinforced thermoplastic composite continuous tube structure for oil and gas delivery in embodiment 1 of the present invention;
FIG. 2 is a side view of a long-acting steel skeleton reinforced thermoplastic composite continuous pipe for oil and gas delivery according to embodiment 1 of the present invention;
fig. 3 is a schematic view of a long-acting steel skeleton reinforced thermoplastic composite continuous tube structure for oil and gas delivery in embodiment 2 of the present invention.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms different from the embodiments described herein and similar modifications may be made by those skilled in the art without departing from the spirit and scope of the invention and, therefore, the invention is not limited to the embodiments disclosed below.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.
Example 1
As shown in fig. 1 and 2, a long-acting steel skeleton reinforced thermoplastic composite continuous pipe for oil and gas transmission comprises: the anode structure comprises an inner liner layer 1, an anode sacrificial layer 2, a reinforcing layer 3 and a protective layer 4.
The lining layer 1 is located at the innermost part of the composite pipe, and the lining layer 1 is formed by extrusion molding of thermoplastic polymer materials, specifically, the thermoplastic polymer materials are selected from one or more of polyethylene, polypropylene, polyvinylidene fluoride, polydodecalactam and polyphenylene sulfide.
The anode sacrificial layer 2 is wound on the outer side of the lining layer 1, and the anode sacrificial layer 2 and the axial lead of the composite pipe form an angle of 55 degrees and are wound on the outer side of the lining layer 1; the anode sacrificial layer 2 is made of steel wires or low-potential metal alloy materials, the anode sacrificial layer 2 can be wound in a strip shape, also can be wound by metal wires, or is embedded in the enhancement layer 3 by a sacrificial anode strip;
specifically, the low-potential metal alloy material is selected from a zinc alloy material or a magnesium alloy material;
wherein: the chemical composition of the zinc alloy material is Zn-Al-Cd-Fe-Pb-Cu,
specifically, the zinc alloy material comprises, by weight: 0.1-0.5%, cd:0.025-0.07%, fe:0.005%, pb:0.006%, cu:0.006 percent, and the balance of Zn;
the chemical composition of the magnesium alloy material is Al-Mn-Cu-Si-Ni-Fe-Mg,
specifically, the magnesium alloy material comprises, by weight: 0.01%, mn:0.50-1.30%, cu:0.005%, si:0.05%, ni:0.001%, fe:0.01 percent, and the balance being Mg.
The enhancement layer 3 is wound on the outer side of the anode sacrificial layer 2, and specifically, the enhancement layer 3 and the axial lead of the composite tube form an angle of 55 degrees and are wound on the outer side of the anode sacrificial layer 2;
the enhancement layer 3 is made of a steel strip coated with a low-potential metal alloy material, the potential of the low-potential metal alloy material adopted by the enhancement layer 3 is lower than that of the steel strip,
wherein: the chemical composition of the zinc alloy material is Zn-Al-Cd-Fe-Pb-Cu,
specifically, the zinc alloy material comprises, by weight: 0.1-0.5%, cd:0.025-0.07%, fe:0.005%, pb:0.006%, cu:0.006 percent, and the balance of Zn;
the chemical composition of the magnesium alloy material is Al-Mn-Cu-Si-Ni-Fe-Mg,
specifically, the magnesium alloy material comprises, by weight: 0.01%, mn:0.50-1.30%, cu:0.005%, si:0.05%, ni:0.001%, fe:0.01 percent, and the balance being Mg.
The inner wall of the protective layer 4 is fixedly connected with the reinforcing layer 3, the protective layer 4 is made of resin with wear resistance, and specifically, the resin with wear resistance is polyethylene.
Wherein: the anode sacrificial layer 2 is made of steel wire or low-potential metal alloy material, and the potential of the steel wire or the low-potential metal alloy material is lower than that of the steel strip of the enhancement layer 3.
The thickness of the inner liner layer 1 is 5-7 mm, the thickness of the anode sacrificial layer 2 is 3-5 mm, the thickness of the enhancement layer 3 is 3-5 mm, and the thickness of the protection layer 4 is 5-7 mm.
Example 2
As shown in fig. 3, it is a long-acting steel skeleton reinforced thermoplastic composite continuous pipe for oil and gas transmission, comprising: the lining layer 1, the anode sacrificial layer 2, the enhancement layer 3 and the protective layer 4.
The inner liner layer 1 is located at the innermost part of the composite pipe, and the inner liner layer 1 is formed by extrusion molding of thermoplastic polymer materials, specifically, the thermoplastic polymer materials are selected from one or more of polyethylene, polypropylene, polyvinylidene fluoride, polydodecalactam and polyphenylene sulfide.
The reinforcing layer 3 is wound on the outer side of the lining layer 1, and specifically, the reinforcing layer 3 and the axis of the composite pipe form an angle of 55 degrees and are wound on the outer side of the lining layer 1;
the enhancement layer 3 is made of a steel strip coated with a low-potential metal alloy material, and the anode sacrificial layer 2 can be wound in a strip shape or a metal wire or embedded in the enhancement layer 3 by a sacrificial anode strip;
specifically, the low potential metal alloy material is selected from zinc alloy material or magnesium alloy material,
wherein: the chemical composition of the zinc alloy material is Zn-Al-Cd-Mn-Mg-In,
the zinc alloy material comprises the following components in percentage by weight: 0.15-0.3%, cd:0.1 to 0.2%, mn:0.1 to 0.2%, mg:0.1 to 0.2%, in:0.05 to 0.15 percent of Zn, and the balance of Zn;
the chemical composition of the magnesium alloy material is Zn-Al-Ca-Mn-Mg,
according to the weight percentage, the magnesium alloy material is Zn:0.08 to 0.15%, al:1.0 to 2.0%, ca:0.1 to 0.5%, mn: 0.02-0.08 percent, and the balance of Mg.
The anode sacrificial layer 2 is wound on the outer side of the enhancement layer 3, and particularly, the anode sacrificial layer and the axial lead of the composite pipe form an angle of 55 degrees and are wound on the outer side of the enhancement layer;
wherein: the anode sacrificial layer 2 is made of a steel wire or a low potential metal alloy material,
the low-potential metal alloy material is selected from a zinc alloy material or a magnesium alloy material,
the chemical composition of the zinc alloy material is Zn-Al-Cd-Mn-Mg-In,
the zinc alloy material comprises the following components in percentage by weight: 0.15-0.3%, cd:0.1 to 0.2%, mn:0.1 to 0.2%, mg:0.1 to 0.2%, in:0.05 to 0.15 percent of Zn, and the balance of Zn;
the chemical composition of the magnesium alloy material is Zn-Al-Ca-Mn-Mg,
according to the weight percentage, the magnesium alloy material is Zn:0.08 to 0.15%, al:1.0 to 2.0%, ca:0.1 to 0.5%, mn: 0.02-0.08 percent, and the balance of Mg.
The inner wall of the protective layer 4 is fixedly connected with the anode sacrificial layer 2, the protective layer 4 is made of resin with wear resistance, and specifically, the resin with wear resistance is polyethylene.
Wherein: the anode sacrificial layer 2 is made of steel wire or low-potential metal alloy material with lower potential than the steel strip of the enhancement layer 3.
The thickness of the lining layer 1 is 5-7 mm, the thickness of the anode sacrificial layer 2 is 3-5 mm, the thickness of the enhancement layer 3 is 3-5 mm, and the thickness of the protection layer 4 is 5-7 mm.
In summary, the following steps: the long-acting steel skeleton reinforced thermoplastic plastic composite continuous pipe for oil gas conveying has simple structure and good corrosion resistance. By providing the enhancement layer with a low-potential metal material, corrosion is preferentially performed, so that the enhancement layer is protected from corrosion. And further, the sacrificial anode layer is arranged, so that the steel strip of the enhancement layer can be effectively protected, namely, the low-potential metal alloy material coated outside the unused steel strip of the enhancement layer is protected, the steel strip is equivalent to double-layer safety, and the enhancement layer is protected from being corroded, so that the purpose of prolonging the service life of the composite pipe is achieved. Through the outmost design protective layer at this composite pipe to adopt wear-resisting polyethylene resin as the material of protective layer, can improve composite pipe's bulk strength, make the shock resistance of this pipeline strong. The utility model relates to a from compound coiled tubing of steel skeleton reinforcing thermoplastic of taking sacrificial anode system has apparent economic benefits to the essential safety and the long-term application of guaranteeing the coiled tubing.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the inventive concept, and these should also be considered as within the scope of the present invention.
Claims (5)
1. The long-acting steel skeleton reinforced thermoplastic composite continuous pipe for oil and gas transmission is characterized by comprising the following components in percentage by weight: the device comprises an inner liner layer (1), an anode sacrificial layer (2), an enhancement layer (3) and a protection layer (4);
the inner lining layer (1) is positioned at the innermost part of the composite pipe, and the inner lining layer (1) is formed by extrusion molding of a thermoplastic polymer material;
the anode sacrificial layer (2) is wound on the outer side of the lining layer (1), and the anode sacrificial layer (2) is made of steel wires or low-potential metal alloy materials;
the enhancement layer (3) is wound on the outer side of the anode sacrificial layer (2), the enhancement layer (3) is made of a steel strip coated with a low-potential metal alloy material, and the potential of the low-potential metal alloy material adopted by the enhancement layer (3) is lower than that of the steel strip;
the inner wall of the protective layer (4) is fixedly connected with the reinforcing layer (3), and the protective layer (4) is made of resin with wear resistance;
wherein: the electric potential of the steel wire or low-potential metal alloy material adopted by the anode sacrificial layer (2) is lower than that of the steel strip of the enhancement layer (3).
2. The long-acting steel skeleton reinforced thermoplastic composite continuous pipe for oil and gas transmission is characterized by comprising the following components in percentage by weight: the anode structure comprises an inner liner layer (1), an anode sacrificial layer (2), an enhancement layer (3) and a protection layer (4);
the inner lining layer (1) is positioned at the innermost part of the composite pipe, and the inner lining layer (1) is formed by extrusion molding of a thermoplastic polymer material;
the enhancement layer (3) is wound on the outer side of the lining layer (1), and the enhancement layer (3) is made of a steel strip coated with a low-potential metal alloy material;
the anode sacrificial layer (2) is wound on the outer side of the enhancement layer (3), and the anode sacrificial layer (2) is made of steel wires or low-potential metal alloy materials;
the inner wall of the protective layer (4) is fixedly connected with the anode sacrificial layer (2), and the protective layer (4) is made of resin with wear resistance;
wherein: the potential of the steel wire or low-potential metal alloy material adopted by the anode sacrificial layer (2) is lower than that of the steel strip of the enhancement layer (3).
3. The oil and gas transmission long-acting steel skeleton reinforced thermoplastic plastic composite continuous pipe as claimed in claim 1 or 2, wherein the low-potential metal alloy material is selected from zinc alloy materials or magnesium alloy materials.
4. The long-acting steel skeleton reinforced thermoplastic composite continuous pipe for oil and gas transmission as claimed in claim 1 or 2, wherein the resin with wear resistance is polyethylene.
5. The long-acting steel skeleton reinforced thermoplastic composite continuous pipe for oil and gas transmission as claimed in claim 1 or 2, wherein the thickness of the inner liner (1) is 5 to 7mm, the thickness of the anode sacrificial layer (2) is 3 to 5mm, the thickness of the reinforcing layer (3) is 3 to 5mm, and the thickness of the protective layer (4) is 5 to 7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221963198.XU CN217977799U (en) | 2022-07-27 | 2022-07-27 | Long-acting steel skeleton reinforced thermoplastic plastic composite continuous pipe for oil and gas conveying |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221963198.XU CN217977799U (en) | 2022-07-27 | 2022-07-27 | Long-acting steel skeleton reinforced thermoplastic plastic composite continuous pipe for oil and gas conveying |
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| CN217977799U true CN217977799U (en) | 2022-12-06 |
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| CN202221963198.XU Active CN217977799U (en) | 2022-07-27 | 2022-07-27 | Long-acting steel skeleton reinforced thermoplastic plastic composite continuous pipe for oil and gas conveying |
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