High-strength seabed oil pipeline

Abstract

The utility model relates to the technical field of seabed oil transportation, and discloses a high-strength seabed oil transportation pipeline which comprises a pipeline body, a reinforcing structure is arranged in the pipeline body and comprises a plurality of supporting plates which are symmetrically distributed, and each supporting plate is arranged on the inner side wall of the pipeline body in a rectangular arrangement mode. The other end of each supporting plate is fixedly connected with an arc-shaped plate, and a concrete layer is fixedly connected between every two supporting plates. In a preferable embodiment, the four supporting plates are additionally arranged on the inner side wall of the pipeline body, the arc-shaped plates are arranged at the ends of the four supporting plates, and the concrete layer is matched for supporting, so that the overall strength is improved, supporting can be effectively provided, larger pressure can be borne, deformation is prevented, the four supporting plates are connected through the multiple reinforcing plates, and the stability of the pipeline is improved. The connecting performance of the four supporting plates is further improved, and meanwhile certain elasticity is achieved, so that the toughness after assembly is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of submarine oil transportation, and particularly relates to a high-strength submarine oil pipeline. BACKGROUND

[0002] Petroleum refers to a mixture of hydrocarbons in liquid and solid states, with a natural occurrence. Petroleum is divided into crude oil, natural gas, natural gas liquid, and natural tar, etc. However, "petroleum" is still used as the definition of "crude oil" in common practice. Submarine oil transportation refers to the process of transporting oil or natural gas from offshore oil fields to onshore processing facilities or terminals through submarine pipelines. This method is widely used in the development of offshore oil and gas fields and is one of the main ways of transporting marine oil and gas resources. Submarine oil pipelines are key infrastructure for transporting oil or natural gas from offshore oil fields to onshore terminals or processing facilities.

[0003] There are still some problems in the use of existing submarine oil pipelines. Because the pressure of the pipeline in the submarine is large, the oil pipeline is prone to deformation under the action of external water pressure. The deformation of the pipeline not only affects its structural stability and service life, but also can further cause the pipeline to rupture, leading to oil leakage and causing immeasurable losses.

[0004] To solve the above technical problems, existing technologies use metal (steel, etc.) and elastic and materials (rubber, etc.) to prepare reinforced oil pipelines. For example, Chinese Utility Model CN200920024053.1 provides an oil field oil extraction pipeline composed of a steel pipe body and a rubber layer. The steel pipe body has support frames distributed on its outer wall, and the rubber layer is filled between the steel pipe body and the support frames. A layer of rubber layer is provided outside the rubber layer. The adhesion strength of the steel pipe body and the rubber layer is improved, which can resist seawater impact, improve corrosion resistance and service life. Another existing technology CN201220751305.2 provides a marine corrosion-resistant composite pipe, which includes a circular pipe body and an elastic protective layer provided on the surface of the circular pipe body. The elastic protective layer is provided on the surface of the pipe body to make the pipe body have corrosion resistance and wear resistance. However, the construction period of elastic materials and metal materials is long and the cost is high (including adhesive coating, adhesive construction, adhesive volatilization, etc.), and the adhesive may fail due to long-term underwater environment, resulting in pipe scrap.

[0005] Existing technologies also use cement and other materials to strengthen oil pipelines. For example, Chinese Utility Model Patent CN201920870667.5 provides a petroleum pipeline, which is provided with an outer cement wrapping layer on the outside. A limiting outer groove is formed on the outer surface of the outer cement wrapping layer. A sealing pipe is assembled on the outside of the connection between the two petroleum pipelines to ensure the sealing and safety of the connection between the petroleum pipelines. Chinese Utility Model Patent CN201922288283.5 uses a glass steel sleeve to strengthen the oil pipeline.

[0006] In summary, there are still some technical contents that need to be improved in the field of submarine oil pipeline technology. The present applicant provides a high-strength submarine oil pipeline to solve the problems in the technical field. Content of the utility model

[0007] To solve the shortcomings in the prior art, the utility model provides a high-strength submarine oil pipeline, which adds a reinforcing structure inside the pipeline body, improves the overall strength of the pipeline body, can effectively provide support and withstand greater pressure, thereby preventing deformation.

[0008] To achieve the above-mentioned purposes, the technical scheme provided by the utility model is as follows:

[0009] A high-strength submarine oil pipeline comprises a pipeline body, and a reinforcing structure is arranged inside the pipeline body.

[0010] The reinforcing structure comprises a plurality of support plates arranged symmetrically, each support plate is arranged in a rectangular array on the inner side wall of the pipeline body, each support plate has an arc-shaped plate fixedly connected to the other end thereof, and a concrete layer is fixedly connected between each pair of support plates; the technical scheme provided by the present application improves the overall strength of the pipeline body by arranging the reinforcing structure on the inner side wall of the pipeline body, can effectively provide support and withstand greater pressure, thereby preventing deformation.

[0011] Further, the number of support plates is four, and the number of concrete layers fixedly connected between each pair of support plates is four.

[0012] Further, the four concrete layers are fixedly connected with a buffer layer on the outer side wall; through the above technical scheme, the buffer layer can absorb and buffer external vibration, thereby reducing the influence on the structure.

[0013] Further, a plurality of reinforcing plates are arranged between each pair of support plates, and the plurality of reinforcing plates are arranged in a horizontal array between each pair of support plates; through the above technical scheme, the plurality of reinforcing plates are connected to each support plate, improving the connectivity between the support plates and enhancing the overall strength.

[0014] Further, the material of the concrete layer is asphalt concrete; through the above technical scheme, the concrete layer has good corrosion resistance and stability to corrosion media such as acids, bases and salts below medium concentration, thereby prolonging the service life of the concrete layer.

[0015] Further, the material of the plurality of reinforcing plates is spring steel; through the above technical scheme, the plurality of reinforcing plates have a certain elasticity while connecting the four support plates, thereby improving the flexibility after assembly.

[0016] Further, the pipeline body outer side wall is fixed with a corrosion-resistant layer. Preferably, the corrosion-resistant layer is made of a high-molecular polymer material; further preferably, the high-molecular polymer material is polyurea or polyurethane. Through the above technical solution, the high-molecular polymer (polyurea, polyurethane, etc.) has the characteristics of high strength, high elasticity, wear resistance, chemical corrosion resistance and weather resistance, and can prevent corrosion of seawater.

[0017] Further, the corrosion-resistant layer outer side is provided with a support structure, the support structure includes a support net, the support net is sleeved outside the corrosion-resistant layer, a plurality of connecting rods are fixedly connected on the inner side wall of the support net, and the plurality of connecting rods are fixedly connected on the outer side wall of the corrosion-resistant layer. Through the above technical solution, the support net is supported outside the corrosion-resistant layer, which can reduce the direct contact of the corrosion-resistant layer by the marine organisms (including fish, shellfish, etc.) and prevent the corrosion-resistant layer from being damaged by the marine organisms.

[0018] The utility model has the advantages of the following beneficial effects:

[0019] 1. In the utility model, the high-strength submarine oil pipeline is provided with a plurality of support plates on the inner side wall of the pipeline body, and each support plate is provided with an arc-shaped plate at the end portion, which cooperates with the concrete layer to provide support and improve the overall strength, thereby effectively providing support and bearing greater pressure to prevent deformation.

[0020] 2. In the utility model, the plurality of support plates are connected by the plurality of reinforcing plates, which further increases the connectivity of the plurality of support plates and also has a certain elasticity, thereby improving the toughness after assembly, and the buffer layer is arranged between the plurality of concrete layers and the pipeline body to absorb and buffer the external vibration, thereby reducing the influence on the structure.

[0021] 3. In the utility model, the corrosion-resistant layer made of a high-molecular composite material has the characteristics of high strength, high elasticity, wear resistance, chemical corrosion resistance and weather resistance, and can prevent corrosion of seawater. The support net is supported outside the corrosion-resistant layer, which can reduce the direct contact of the corrosion-resistant layer by the marine organisms and prevent the corrosion-resistant layer from being damaged by the marine organisms.

[0022] 4. The utility model has low cost and wide application field, and can be applied not only to submarine oil pipelines but also to oil-containing wastewater (including domestic wastewater) transportation and wastewater containing certain corrosive substances transportation. In addition to underwater pipelines, the utility model can also be used for shallowly buried underground pipelines, and can be used for continuous uninterrupted liquid transportation or intermittent liquid transportation.

[0023] In summary, compared with the prior art, the utility model has a better cost performance and better technical transformation value. If it is transformed and applied, it will create huge economic and social benefits. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A perspective view of a high-strength submarine oil pipeline is provided in the utility model;

[0025] Figure 2 A perspective view of a high-strength submarine oil pipeline support plate is provided in the utility model;

[0026] Figure 3 A side sectional view of a high-strength submarine oil pipeline is provided in the utility model;

[0027] Figure 4 A Figure 3 Enlarged view of A in the middle.

[0028] Legend:

[0029] 1, pipeline body; 2, reinforcing structure; 201, support plate; 202, arc plate; 203, reinforcing plate; 204, buffer layer; 205, concrete layer; 3, corrosion-resistant layer; 4, support structure; 401, connecting rod; 402, support net. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the embodiments described in the specification are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0031] It should be noted that, in terms of comprehensive economy and pipeline strength performance, setting four support plates 201 is a relatively optimal scheme. However, in other embodiments of the utility model, the number of support plates 201 can be three, five or six, which are symmetrically arranged, and similar technical effects can be achieved. Experimental results show that the pipeline strength, especially the pressure resistance, of the pipeline with two support plates 201 is relatively low, and it is only suitable for above-ground pipelines, but not suitable for submarine or underground pipelines. If the number of support plates 201 exceeds six, the production cost will be greatly increased, thereby reducing the economic value of technology transfer.

[0032] With reference to Figures 1-4 , the utility model provides an embodiment: a kind of high-strength submarine oil pipeline, including pipeline body 1, reinforcing structure 2 is arranged in pipeline body 1, by setting reinforcing structure 2 on the inner side wall of pipeline body 1, improve the overall strength of pipeline body 1.

[0033] The reinforcing structure 2 comprises four support plates 201 arranged in a rectangular array on the inner side wall of the pipeline body 1, the other end of each of the four support plates 201 is fixedly connected with an arc-shaped plate 202, and a concrete layer 205 is fixedly connected between the four support plates 201, which can effectively provide support and bear greater pressure, thereby preventing deformation.

[0034] The outer side of each of the four concrete layers 205 is fixedly connected with a buffer layer 204, which can absorb and buffer external vibration, thereby reducing the influence on the structure, and a plurality of reinforcing plates 203 are arranged between the four support plates 201, the plurality of reinforcing plates 203 are arranged transversely between the four support plates 201, the four support plates 201 are connected by the plurality of reinforcing plates 203, the connectivity between the four support plates 201 is improved, and thus the overall strength is improved.

[0035] The material of the four concrete layers 205 is asphalt concrete, which has good corrosion resistance and stability to corrosion media such as acids, bases and salts below medium concentration, thereby prolonging the service life of the concrete layer 205.

[0036] The reinforcing plate 203 is not completely rigid, but has a certain deformation capacity, which can connect the four support plates 201 while having a certain elasticity and deformation capacity, thereby improving the toughness after assembly. In another embodiment of the present application, the reinforcing plate 203 is made of spring steel.

[0037] The outer side wall of the pipeline body 1 is fixedly sleeved with a corrosion-resistant layer 3 made of polyurea, which has the characteristics of high strength, high elasticity, wear resistance, chemical corrosion resistance and weather resistance, can prevent corrosion of seawater, and the outer side of the corrosion-resistant layer 3 is provided with a supporting structure 4 comprising a supporting net 402 sleeved on the outer side of the corrosion-resistant layer 3, a plurality of connecting rods 401 are fixedly connected to the inner side wall of the supporting net 402, and the plurality of connecting rods 401 are fixedly connected to the outer side wall of the corrosion-resistant layer 3, which is supported on the outer side of the corrosion-resistant layer 3 by the supporting net 402, can reduce the direct contact of marine organisms with the corrosion-resistant layer 3, and prevent the corrosion-resistant layer 3 from being damaged by marine organisms.

[0038] Working principle: four support plates 201 are added to the inner side wall of the pipeline body 1, arc-shaped plates 202 are arranged at the ends of the four support plates 201, and the concrete layer 205 is used for support, thereby improving the overall strength, effectively providing support, bearing greater pressure, and preventing deformation, the four support plates 201 are connected by the plurality of reinforcing plates 203, the connectivity of the four support plates 201 is further increased, and the four support plates 201 also have a certain elasticity, thereby improving the toughness after assembly, and the buffer layer 204 is arranged between the four concrete layers 205 and the pipeline body 1, which can absorb and buffer external vibration, thereby reducing the influence on the structure.

[0039] In the embodiment, the material of the corrosion-resistant layer 3 is polyurea. In other embodiments of the present application, the material of the corrosion-resistant layer 3 can be selected from polyurethane and other high-molecular functional materials, which have the characteristics of high strength, high elasticity, wear resistance, chemical corrosion resistance and weather resistance, and can prevent corrosion of seawater. The supporting net 402 is supported on the outer side of the corrosion-resistant layer 3, which can reduce the direct contact of the corrosion-resistant layer 3 with seabed organisms and prevent the corrosion-resistant layer 3 from being damaged by seabed organisms.

[0040] Finally, it should be noted that: the above only for the preferred embodiments of the present application and is not intended to limit the present application, although the foregoing embodiments of the present application have been described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A high strength subsea oil pipeline comprising a pipeline body (1), characterised in that: The pipeline body (1) is internally provided with a reinforcing structure (2); The reinforcing structure (2) comprises n support plates (201), the n support plates (201) are arranged in a rectangular array on the inner side wall of the pipeline body (1), the other ends of the n support plates (201) are fixedly connected with arc-shaped plates (202), and the n support plates (201) are fixedly connected with concrete layers (205) between them; n refers to 3, 4, 5 or 6.

2. A high strength subsea oil pipeline according to claim 1, characterized in that: The n concrete layers (205) are fixedly connected with buffer layers (204) on the outer side wall.

3. A high strength subsea oil pipeline according to claim 1, characterized in that: A plurality of reinforcing plates (203) are arranged between the n support plates (201).

4. A high strength subsea oil pipeline according to claim 1, wherein: The material of the n concrete layers (205) is asphalt concrete.

5. A high strength subsea oil pipeline according to claim 3, wherein: The n reinforcing plates (203) have certain deformation performance.

6. A high strength subsea oil pipeline as defined in claim 1, wherein: The outer side wall of the pipeline body (1) is fixedly sleeved with a corrosion-resistant layer (3), and the material of the corrosion-resistant layer (3) is polyurea.

7. A high strength subsea oil pipeline according to claim 6, wherein: The outer side of the corrosion-resistant layer (3) is provided with a supporting structure (4), the supporting structure (4) comprises a supporting net (402), the supporting net (402) is sleeved outside the corrosion-resistant layer (3), a plurality of connecting rods (401) are fixedly connected to the inner side wall of the supporting net (402), and the plurality of connecting rods (401) are fixedly connected to the outer side wall of the corrosion-resistant layer (3).

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