High-strength tungsten carbide alloy composite pipe

Abstract

The utility model relates to the technical field of composite pipes, and discloses a high-strength tungsten carbide alloy composite pipe which comprises a base layer steel pipe and a tungsten carbide alloy layer, the tungsten carbide alloy layer is composited on the outer wall of the base layer steel pipe, a plurality of annular protruding edges are arranged on the outer wall of the base layer steel pipe, and the tungsten carbide alloy layer wraps the annular protruding edges and is tightly attached to the outer wall of the base layer steel pipe. A nested reinforcing structure is formed; butt joint structures are arranged on the two sides of the base steel pipe and the tungsten carbide alloy layer. And tensile alloy rings for reinforcing the pipe body are arranged on the outer wall of the tungsten carbide alloy layer at equal intervals. And protective salient points for preventing the pipe body and the tensile alloy rings from being abraded are arranged on the tensile alloy rings at equal intervals. The protective salient points are hemispherical and are made of stainless steel materials. Protective surfaces are arranged on the two sides of the base steel pipe and the tungsten carbide alloy layer and are tungsten carbide alloy products. The utility model has the advantages that: the composite part is not easy to separate, the outer layer has strong tensile and compressive capacities, and the wear resistance is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of composite pipe technology, specifically to a high-strength tungsten carbide alloy composite pipe. Background Technology

[0002] High-strength tungsten carbide alloy composite pipe is a type of pipe with excellent performance. It uses steel pipe as the base material, and tungsten carbide alloy is tightly bonded to the inner wall of the steel pipe through a special process. This composite pipe combines the toughness and strength of steel pipe with the high hardness, high wear resistance, and good corrosion resistance of tungsten carbide alloy. In industries such as petroleum, mining, and power, it can be used to transport highly abrasive and corrosive media, effectively extending pipeline service life, reducing equipment maintenance costs, and improving production efficiency. It is a new type of pipe with broad application prospects.

[0003] While tungsten carbide alloy composite pipes offer certain advantages in industrial applications, technological bottlenecks remain. At the composite structure level, due to the difference in thermal expansion coefficients between the tungsten carbide alloy and the base material, as well as limitations in the interfacial bonding strength during manufacturing, there is a potential threat of separation at the composite joints over prolonged use. This hazard could lead to decreased pipe performance or even failure. Regarding the outer layer's performance, its tensile and compressive strength is insufficient for extreme operating conditions, making it prone to deformation or even cracking under high pressure and high stress environments. Furthermore, the outer layer material exhibits poor wear resistance. Utility Model Content

[0004] To solve the above-mentioned problems, this utility model proposes a high-strength tungsten carbide alloy composite pipe with composite parts that are not easily separated, strong tensile and compressive strength of the outer layer, and enhanced wear resistance.

[0005] To solve the above-mentioned technical problems, the technical solution proposed by this utility model is: a high-strength tungsten carbide alloy composite pipe, comprising: a base steel pipe and a tungsten carbide alloy layer, wherein the tungsten carbide alloy layer is composited on the outer wall of the base steel pipe, the outer wall of the base steel pipe is provided with a plurality of annular protrusions, and the tungsten carbide alloy layer wraps around the annular protrusions and is tightly fitted to the outer wall of the base steel pipe to form a nested reinforcement structure.

[0006] The base steel pipe and the tungsten carbide alloy layer are provided with a butt joint structure on both sides.

[0007] Furthermore, the outer wall of the tungsten carbide alloy layer is provided with tensile alloy rings that reinforce the tube body at equal intervals.

[0008] Furthermore, the tensile alloy ring is provided with protective protrusions at equal intervals to prevent wear between the tube body and the tensile alloy ring.

[0009] Furthermore, the protective protrusions are hemispherical and made of stainless steel.

[0010] Furthermore, both sides of the base steel pipe and the tungsten carbide alloy layer are provided with protective surfaces, which are tungsten carbide alloy products.

[0011] Furthermore, the docking structure includes a hexagonal tube 1 on one side of the protective surface and a hexagonal tube 2 on the other side of the protective surface, wherein the hexagonal tube 1 of the composite tube can be inserted into the hexagonal tube 2 of the other composite tube.

[0012] Furthermore, both the outer wall of the hexagonal tube one and the inner wall of the hexagonal tube two are smoothed and are tightly fitted together.

[0013] The advantages of this utility model compared with the prior art are:

[0014] The composite structure is sturdy and durable: the annular ridges on the outer wall of the base steel pipe and the tungsten carbide alloy layer form a nested reinforcement, increasing the contact area and interlocking force to prevent separation at the composite joint; the protective surfaces on both sides are made of tungsten carbide alloy to resist external damage, prevent the composite layer from peeling off, and ensure long-term reliability.

[0015] Significantly enhanced mechanical properties: The tensile alloy ring on the outer wall of the tungsten carbide alloy layer evenly disperses tensile stress, improving tensile strength; the protective protrusions convert sliding friction into point friction, reducing wear; combined with the hemispherical stainless steel material, it enhances pressure resistance and corrosion resistance, extending pipeline life.

[0016] Easy connection and good sealing: The plug-in connection structure of hexagonal tube one and hexagonal tube two prevents rotation and facilitates installation, improving splicing efficiency; the smooth and close-fitting inner and outer walls reduce friction, ensure tight joints, prevent media leakage, and enhance the connection strength and sealing of the pipeline system. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is the right view of this utility model;

[0019] Figure 3 This is the front view of this utility model;

[0020] Figure 4 This is a cross-sectional view of the composite pipe of this utility model.

[0021] As shown in the figure: 1. Base steel pipe; 2. Tungsten carbide alloy layer; 3. Tensile alloy ring; 4. Protective protrusion; 5. Hexagonal tube one; 6. Hexagonal tube two. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings.

[0023] Combined with appendix Figure 1 To be continued Figure 4The annular protrusion on the outer wall of the base steel pipe 1 and the nested reinforcement structure formed by the tungsten carbide alloy layer 2 are tightly interlocked like mortise and tenon joints, which greatly increases the contact area and mechanical interlocking force between the two, effectively avoiding the problem of separation at the composite joint due to long-term use; the docking structure on both sides provides convenience for the installation and splicing of the composite pipe, making the installation process more efficient, and also enhancing the stability of the overall pipeline connection.

[0024] Tensile alloy rings 3 are evenly distributed along the outer wall of the tungsten carbide alloy layer 2, which can uniformly disperse the tensile stress on the pipe body and significantly improve the tensile strength of the composite pipe. When subjected to tensile loads, tensile alloy rings 3 can effectively prevent the pipe body from cracking due to stress concentration, ensuring the safety and reliability of the pipeline under high tensile conditions and extending the service life of the pipeline. Protective protrusions 4 are distributed on the tensile alloy rings 3. When the pipe body comes into contact with external objects or transports media containing particles, the protective protrusions 4 first come into contact with the outside, converting sliding friction into point contact friction, reducing the coefficient of friction, thereby reducing the wear of the pipe body and tensile alloy rings 3, protecting the structural integrity of the pipe body, and reducing maintenance costs and replacement frequency.

[0025] Compared to other shapes, the hemispherical protective protrusion 4 can distribute pressure more evenly when subjected to force, avoiding excessive local stress that could damage the protrusion. The stainless steel material has good corrosion resistance and wear resistance, which can not only adapt to a variety of complex media environments, but also ensure the durability of the protective protrusion 4 itself, continuously providing reliable protection for the pipe body.

[0026] The tungsten carbide alloy protective surfaces on both sides of the base steel pipe 1 and the tungsten carbide alloy layer 2 can effectively resist external impacts, wear and corrosion. Especially during pipe connection and transportation, they can protect the ends of the composite pipe from damage and prevent the edges of the composite layer from peeling off due to external forces. They also enhance the overall protective performance of the composite pipe under harsh working conditions.

[0027] The plug-in connection structure of hexagonal tube 5 and hexagonal tube 6 offers stronger anti-rotation capabilities compared to traditional circular interfaces, ensuring the stability of the connected pipeline. During installation, this structure facilitates quick alignment and splicing, improving installation efficiency. In use, it effectively transmits axial force and torque, ensuring the reliability and sealing of the pipeline system. The smoothed outer wall of hexagonal tube 5 and the inner wall of hexagonal tube 6 reduce frictional resistance during insertion, making the installation process smoother. The tight fit design ensures a seal at the interface, preventing media leakage, while also enhancing the connection strength to avoid connection failure due to loosening, further improving the overall performance and safety of the composite pipe.

[0028] Working principle: In the manufacturing process, firstly, annular protrusions are machined onto the outer wall of the base steel pipe 1. Through a specific process, a tungsten carbide alloy layer 2 wraps around these protrusions, forming a nested reinforced structure. This achieves a composite structure between the base steel pipe 1 and the tungsten carbide alloy layer 2, ensuring a tight fit between the two. Next, tensile alloy rings 3 are installed at equal intervals on the outer wall of the tungsten carbide alloy layer 2, and hemispherical stainless steel protective protrusions 4 are evenly spaced on the tensile alloy rings 3 to enhance the tensile strength and wear resistance of the pipe body. Simultaneously, tungsten carbide alloy protective surfaces are fabricated on both sides of the base steel pipe 1 and the tungsten carbide alloy layer 2 to provide protection for the pipe ends.

[0029] In use, the hexagonal tube 5 of one composite pipe is inserted into the hexagonal tube 6 of another composite pipe. The tight fit and smooth finish of the hexagonal tube 5 and hexagonal tube 6 reduce the insertion resistance and quickly complete the splicing. With the advantages of the hexagonal structure in preventing rotation and ensuring stable force transmission, the pipe connection is secure and well-sealed. It can be applied to scenarios such as oil and mining where high-wear and highly corrosive media are transported.

[0030] 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.

[0031] 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 high-strength tungsten carbide alloy composite pipe, characterized in that, include: The base steel pipe (1) and the tungsten carbide alloy layer (2) are composite on the outer wall of the base steel pipe (1). The outer wall of the base steel pipe (1) is provided with several annular protrusions. The tungsten carbide alloy layer (2) wraps around the annular protrusions and fits tightly against the outer wall of the base steel pipe (1) to form a nested reinforcement structure. The base steel pipe (1) and the tungsten carbide alloy layer (2) are provided with a butt joint structure on both sides.

2. The high-strength tungsten carbide alloy composite pipe according to claim 1, characterized in that: The outer wall of the tungsten carbide alloy layer (2) is provided with tensile alloy rings (3) that reinforce the tube body at equal intervals.

3. The high-strength tungsten carbide alloy composite pipe according to claim 2, characterized in that: The tensile alloy ring (3) is provided with protective protrusions (4) at equal intervals to prevent wear on the tube body and the tensile alloy ring (3).

4. The high-strength tungsten carbide alloy composite pipe according to claim 3, characterized in that: The protective protrusion (4) is hemispherical and made of stainless steel.

5. The high-strength tungsten carbide alloy composite pipe according to claim 1, characterized in that: Both sides of the base steel pipe (1) and the tungsten carbide alloy layer (2) are provided with protective surfaces, which are tungsten carbide alloy products.

6. A high-strength tungsten carbide alloy composite pipe according to claim 5, characterized in that: The docking structure includes a hexagonal tube 1 (5) on one side of the protective surface and a hexagonal tube 2 (6) on the other side of the protective surface. The hexagonal tube 1 (5) of one composite tube can be inserted into the hexagonal tube 2 (6) of another composite tube.

7. A high-strength tungsten carbide alloy composite pipe according to claim 6, characterized in that: The outer wall of the hexagonal tube one (5) and the inner wall of the hexagonal tube two (6) are both smooth and tightly fitted together.

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