Multi-metal composite steel pipe convenient to install

Abstract

The utility model relates to the technical field of composite steel pipes, and discloses a multi-metal composite steel pipe convenient to install, which comprises a steel pipe main body, an inner layer metal pipe, a middle transition layer and an outer layer metal pipe, the butt-joint assembly comprises a butt-joint inner ring and a butt-joint outer ring which are integrally formed and arranged at the two ends of the steel pipe body respectively, a plurality of positioning protruding strips are arranged on the outer wall of the butt-joint inner ring, positioning grooves are formed in the inner wall of the butt-joint outer ring, and the joint of the butt-joint inner ring and the steel pipe body and the end, away from the steel pipe body, of the butt-joint outer ring are chamfers; the reinforcing structure comprises a plurality of annular reinforcing ribs and spiral reinforcing ribs, the annular reinforcing ribs are arranged on the outer wall of the steel pipe body, the spiral reinforcing ribs are arranged between the annular reinforcing ribs, and the two ends of the spiral reinforcing ribs extend to be connected with the annular reinforcing ribs on the two sides respectively. The utility model has the advantages that the integral linkage property of the outer wall reinforcing ribs is good, the tensile property is improved, the adaptability of the butt joint part of the two pipes is good, and the deflection phenomenon is not easy to occur.

Description

Technical Field

[0001] This utility model relates to the field of composite steel pipe technology, specifically to a multi-metal composite steel pipe that is easy to install. Background Technology

[0002] Multimetallic composite steel pipe is a type of pipe made by combining various metal materials through a specific process. It typically uses carbon steel or stainless steel as the base material, with one or more layers of other metals, such as copper or aluminum, laminated onto its surface or interior. By combining different metals, multimetallic composite steel pipe can possess the excellent properties of multiple metals, such as the strength and toughness of carbon steel, the corrosion resistance of copper, and the thermal conductivity of aluminum. This type of pipe is widely used in petroleum, chemical, and power industries, meeting diverse performance requirements under different working conditions, improving pipeline service life and reliability, and also reducing costs to some extent.

[0003] Currently, in engineering applications, the outer wall reinforcement structure of multi-metal composite steel pipes often employs ring-shaped or straight reinforcing ribs. These traditional reinforcement structures, through localized thickening and rib-like protrusions, can indeed improve the tensile and compressive strength of the pipe to some extent. However, this type of reinforcement has significant limitations: because the reinforcing ribs are relatively independent of the main structure, they cannot achieve coordinated stress distribution between the multi-metal layers, only enhancing the mechanical properties of localized areas and failing to fully leverage the overall advantages of the composite structure. Furthermore, during installation and connection, the lack of precise positioning auxiliary structures requires construction personnel to expend considerable effort on axis alignment. Even slight deviations can lead to welding misalignment or adhesive displacement. Utility Model Content

[0004] To solve the above-mentioned problems, this utility model proposes a multi-metal composite steel pipe that is easy to install, with good overall linkage of the outer wall reinforcing ribs, improved tensile strength, good compatibility of the two pipe joints, and less prone to skewing.

[0005] To solve the above-mentioned technical problems, the technical solution proposed by this utility model is: a multi-metal composite steel pipe that is easy to install, comprising:

[0006] The main body of the steel pipe includes an inner metal pipe, an intermediate transition layer, and an outer metal pipe, which are sequentially assembled from the inside to the outside.

[0007] The docking assembly includes an inner docking ring and an outer docking ring. The inner docking ring and the outer docking ring are integrally formed at both ends of the steel pipe body and can be tightly fitted together. The outer wall of the inner docking ring is provided with a plurality of positioning protrusions, and the inner wall of the outer docking ring is provided with positioning grooves that match the positioning protrusions. The joint between the inner docking ring and the steel pipe body and the end of the outer docking ring away from the steel pipe body are both chamfered.

[0008] The reinforcing structure includes annular reinforcing ribs and spiral reinforcing ribs. The annular reinforcing ribs are provided on the outer wall of the steel pipe body and there are several of them. The spiral reinforcing ribs are provided between the annular reinforcing ribs on the outer wall of the steel pipe body and their two ends extend to connect with the annular reinforcing ribs on both sides.

[0009] Furthermore, the inner metal tube is a stainless steel tube, the outer metal tube is a carbon steel tube, and the intermediate transition layer is a copper alloy layer.

[0010] Furthermore, the positioning protrusions and positioning grooves are respectively arranged at equal intervals around the inner and outer docking rings.

[0011] Furthermore, the chamfer at the junction of the inner ring and the main body of the steel pipe and the outer ring away from the main body of the steel pipe can be joined to form a V-shaped welding area.

[0012] Furthermore, the annular reinforcing ribs are equidistantly arranged, and the pitch of each spiral reinforcing rib is the same.

[0013] Compared with existing technologies, the advantages of this invention are as follows: Regarding the outer wall reinforcing ribs, annular reinforcing ribs and spiral reinforcing ribs work together. The annular reinforcing ribs provide circumferential support, while the spiral reinforcing ribs extend between and connect with the annular reinforcing ribs, forming an integrated reinforcement network. When the steel pipe is subjected to tensile force, this structure allows the reinforcing ribs to transfer force to each other, resulting in good overall linkage and effectively dispersing the tensile force, thereby improving the tensile strength of the steel pipe.

[0014] At the joint between the two pipes, the inner and outer rings are respectively equipped with positioning protrusions and positioning grooves. These matching grooves ensure precise positioning during connection, guaranteeing accuracy. Simultaneously, this positioning structure ensures even force distribution between the two pipes during connection, reducing the likelihood of misalignment. Furthermore, the chamfered design at the joint creates a V-shaped welding area, facilitating welding operations and further enhancing the connection strength and adaptability, ensuring the stability and reliability of the pipe connection. Attached Figure Description

[0015] Figure 1 This is a three-dimensional representation of the present invention. Figure 1 ;

[0016] Figure 2 This is a three-dimensional representation of the present invention. Figure 2 ;

[0017] Figure 3 This is the front view of this utility model;

[0018] Figure 4 This is a structural schematic diagram of the main body of the steel pipe of this utility model.

[0019] As shown in the figure: 1. Inner metal tube; 2. Intermediate transition layer; 3. Outer metal tube; 4. Connecting inner ring; 5. Connecting outer ring; 6. Positioning protrusion; 7. Positioning groove; 8. Annular reinforcing rib; 9. Spiral reinforcing rib. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] Combined with appendix Figure 4 A multi-metal composite steel pipe that is easy to install includes: a steel pipe body, comprising an inner metal pipe 1, an intermediate transition layer 2, and an outer metal pipe 3, which are sequentially composited from the inside to the outside. The inner metal pipe 1 is a stainless steel pipe, which has good corrosion resistance and can protect the purity of the transported medium. The outer metal pipe 3 is a carbon steel pipe, which has high strength and low cost. The intermediate transition layer 2 is a copper alloy layer, which can enhance the bonding force between the inner and outer layers and make the composite steel pipe perform better.

[0022] Combined with appendix Figure 1 Appendix Figure 2 The docking assembly includes an inner docking ring 4 and an outer docking ring 5. The inner docking ring 4 and the outer docking ring 5 are integrally formed at both ends of the steel pipe body and can be tightly fitted together. The outer wall of the inner docking ring 4 is provided with a plurality of positioning protrusions 6, and the inner wall of the outer docking ring 5 is provided with positioning grooves 7 that match the positioning protrusions 6. The positioning protrusions 6 and the positioning grooves 7 are equidistantly arranged around the inner docking ring 4 and the outer docking ring 5, which can provide more accurate positioning and uniform force during docking, thus ensuring the stability and reliability of the docking assembly connection.

[0023] Combined with appendix Figure 3 The inner ring 4 and the steel pipe body are both chamfered at the joint, and the outer ring 5 and the end away from the steel pipe body are both chamfered. The chamfers of the inner ring 4 and the steel pipe body and the outer ring 5 and the end away from the steel pipe body can be joined to form a V-shaped welding area, which increases the welding area, facilitates welding operation, improves welding quality, and enhances connection strength.

[0024] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 The reinforcing structure includes annular reinforcing ribs 8 and spiral reinforcing ribs 9. Several annular reinforcing ribs 8 are disposed on the outer wall of the steel pipe body. The spiral reinforcing ribs 9 are disposed between the annular reinforcing ribs 8 on the outer wall of the steel pipe body, with both ends extending to connect with the annular reinforcing ribs 8 on both sides. The annular reinforcing ribs 8 are equidistantly spaced, and the spiral reinforcing ribs 9 have the same pitch, ensuring a uniform distribution of the reinforcing structure on the outer wall of the steel pipe body. This better disperses pressure and effectively improves the overall compressive strength and structural stability of the composite steel pipe.

[0025] The specific implementation method of this utility model is as follows: First, prepare two steel pipes to be connected. Align the inner ring 4 of one steel pipe with the outer ring 5 of the other steel pipe. Since the positioning protrusion 6 on the outer wall of the inner ring 4 matches the positioning groove 7 on the inner wall of the outer ring 5, preliminary positioning can be easily achieved, ensuring that there will be no misalignment during connection. After preliminary connection, check the V-shaped welding area formed by the connection between the inner ring 4 and the main body of the steel pipe and the end of the outer ring 5 away from the main body of the steel pipe, and perform welding to enhance the firmness of the connection. During pipeline laying, the annular reinforcing ribs 8 and spiral reinforcing ribs 9 on the outer wall of the main body of the steel pipe play a role. The annular reinforcing ribs 8 provide circumferential support, and the spiral reinforcing ribs 9 connect adjacent annular reinforcing ribs 8 to form an overall linkage, effectively improving the tensile strength of the steel pipe and ensuring the stability of the pipeline when subjected to tensile forces and other external forces. After installation, the inner metal pipe 1, the intermediate transition layer 2, and the outer metal pipe 3 work together to achieve stable transmission and protection of the conveyed medium.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; for those skilled in the art, the specific meaning of the above term in this utility model can be understood according to the specific circumstances.

[0027] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A multi-metal composite pipe for easy installation, characterized by, include: The steel pipe body includes an inner metal pipe (1), an intermediate transition layer (2), and an outer metal pipe (3) that are sequentially assembled from the inside to the outside. The docking assembly includes an inner docking ring (4) and an outer docking ring (5). The inner docking ring (4) and the outer docking ring (5) are integrally formed at both ends of the steel pipe body and can be tightly fitted together. The outer wall of the inner docking ring (4) is provided with several positioning protrusions (6), and the inner wall of the outer docking ring (5) is provided with positioning grooves (7) that match the positioning protrusions (6). The joint between the inner docking ring (4) and the steel pipe body and the end of the outer docking ring (5) away from the steel pipe body are both chamfered. The reinforcing structure includes annular reinforcing ribs (8) and spiral reinforcing ribs (9). The annular reinforcing ribs (8) are provided on the outer wall of the steel pipe body and are provided in several kinds. The spiral reinforcing ribs (9) are provided on the outer wall of the steel pipe body between the annular reinforcing ribs (8) and their two ends extend to connect with the annular reinforcing ribs (8) on both sides.

2. The multi-metal composite pipe of claim 1, wherein: The inner metal tube (1) is a stainless steel tube, the outer metal tube (3) is a carbon steel tube, and the intermediate transition layer (2) is a copper alloy layer.

3. The multi-metal composite pipe of claim 1, wherein: The positioning protrusion (6) and positioning groove (7) are equidistantly arranged around the inner docking ring (4) and the outer docking ring (5), respectively.

4. The multi-metal composite pipe of claim 1, wherein: The inner ring (4) and the steel pipe body are joined at the chamfer of the outer ring (5) away from the steel pipe body to form a V-shaped welding area.

5. The multi-metal composite pipe of claim 1, wherein: The annular reinforcing ribs (8) are equidistantly arranged, and the pitch of each spiral reinforcing rib (9) is the same.

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