Clean stainless steel seamless tube

Abstract

A clean stainless steel seamless pipe comprises a seamless pipe body, an outer pipe is arranged on the outer side of the seamless pipe body, a first energy absorption layer is arranged on the inner side of the outer pipe, a high-strength buffer layer is arranged on the inner side of the first energy absorption layer, a second energy absorption layer is arranged on the inner side of the high-strength buffer layer, and an inner pipe is arranged on the inner side of the second energy absorption layer. The seamless pipe has the advantages that the flowing efficiency of liquid is improved, the service life of the seamless pipe body is prolonged, the weight of the seamless pipe body is reduced, and meanwhile the strength is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stainless steel seamless pipes, in particular to a clean stainless steel seamless pipe. Background Art

[0002] Stainless steel seamless pipe is a long steel strip with a hollow cross-section and no seams around the perimeter. The thicker the wall thickness of the product, the more economical and practical it is. The thinner the wall thickness, the significantly higher the processing cost. The process of the product determines its limited performance. Generally, seamless steel pipes have low precision: uneven wall thickness, low brightness of the inner and outer surfaces of the pipe, high cost of cutting, and pitting and black spots on the inner and outer surfaces that are difficult to remove; its detection and shaping must be processed offline, so it demonstrates its superiority in high-pressure, high-strength, and mechanical structural materials.

[0003] Patent application number CN202420747295.8 discloses an electromagnetic shielding seamless pipe in the field of seamless pipe technology, including a seamless pipe body, the seamless pipe body including an inner pipe and an outer pipe, the outer surface of the inner pipe is provided with an inner shielding layer, and the outer wall of the inner shielding layer is installed with a reinforcement ring, a reinforcement structure is provided between the reinforcement ring and the outer pipe, the reinforcement structure includes multiple groups of reinforcement ribs, and a filling layer is provided between adjacent reinforcement ribs, the outer surface of the outer pipe is provided with an outer shielding layer, and the outer side of the outer shielding layer is provided with an outer protective layer, the outer protective layer includes a flame retardant layer, an anti-oxidation layer and an anti-corrosion layer, and is made of stainless steel. The inner shielding layer and outer shielding layer made of a mixture of steel wire and copper wire improve the electromagnetic resistance of the seamless pipe, avoiding the difficulty of arc ignition during welding of the seamless pipe; the reinforcing ring, multiple groups of reinforcing ribs and filling layer improve the overall strength of the seamless pipe, and the flame retardant layer, anti-oxidation layer and anti-corrosion layer inside the outer protective layer improve the flame retardant, anti-oxidation and anti-corrosion capabilities of the seamless pipe, extending the service life of the seamless pipe, but the seamless pipe has the following problems: First, the seamless pipe cannot increase the smoothness of transportation when used to transport liquids, and secondly, the seamless pipe has defects in its resistance to pressure and external force. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of the existing technology. By arranging semicircular arc grooves evenly distributed around the inner tube, the technical problem that the seamless tube cannot increase the smoothness of transportation when used to transport liquids is solved. By arranging a first energy absorption layer, a second energy absorption layer and a high-strength buffer layer, the technical problem that the seamless tube has defective compressive and external force resistance is solved.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A clean stainless steel seamless pipe comprises a seamless pipe body, an outer pipe is provided on the outside of the seamless pipe body, a first energy absorbing layer is provided on the inside of the outer pipe, a high-strength buffer layer is provided on the inside of the first energy absorbing layer, a second energy absorbing layer is provided on the inside of the high-strength buffer layer, and an inner pipe is provided on the inside of the second energy absorbing layer.

[0007] As a preference, a wear-resistant layer is provided on the outside of the outer tube, and the wear-resistant layer is entirely a metal ceramic plasma cladding layer.

[0008] As a preference, high-strength metal layers are provided on the upper and lower sides of the high-strength buffer layer, and a carbon fiber honeycomb core is provided between the high-strength metal layers adjacent to each other.

[0009] As a preference, the No. 1 energy absorbing layer and the No. 2 energy absorbing layer are both fiber reinforced composite layers, and carbon fibers and glass fibers are provided inside the fiber reinforced composite layers.

[0010] As a preferred embodiment, semicircular arc grooves are evenly provided around the inner periphery of the inner tube, the semicircular arc grooves are integrally formed with the inner tube, and an anti-corrosion layer is provided on the inner side of the inner tube.

[0011] As another preferred embodiment, the anti-corrosion layer is entirely made of polyethylene anti-corrosion layer.

[0012] Beneficial effects of the utility model:

[0013] (1) In the present invention, semicircular grooves are evenly arranged around the inner tube to increase the smoothness of the seamless pipe in conveying liquid. The semicircular groove design can reduce the resistance of the fluid in the pipe, can more effectively guide the liquid, reduce the resistance of the liquid in the pipe, make the liquid conveying smoother, and thus improve the flow efficiency of the liquid.

[0014] (2) In the present invention, the first energy absorbing layer and the second energy absorbing layer are provided to provide the fiber reinforced composite layer with compressive resistance of the seamless pipe body. The fiber reinforced composite layer is provided with a structure of carbon fiber and glass fiber to increase the overall performance of the fiber reinforced composite layer. Carbon fiber has extremely high strength and stiffness, light weight, corrosion resistance, fatigue resistance and other characteristics. When subjected to pressure, it absorbs energy through the stretching and bending of the fiber to dilute the pressure. At the same time, glass fiber is added to the carbon fiber, which can effectively absorb and disperse stress under high load. The combination of the two enhances the compressive resistance of the seamless pipe body and greatly extends the service life of the seamless pipe body.

[0015] (3) In the present invention, the excellent performance of the seamless tube body is ensured by setting a carbon fiber honeycomb core. The carbon fiber honeycomb core has the high strength of carbon fiber and the light weight of the honeycomb structure. It has extremely high strength and is very effective in blocking noise. The sound insulation strength can reach 40-50dB. It has a low thermal conductivity coefficient and can ensure internal heat insulation. At the same time, the honeycomb core is densely arranged inside, which enhances the overall pressure resistance and stability, reduces the weight of the seamless tube body and increases the strength.

[0016] In summary, the seamless pipe has the advantages of improving the flow efficiency of the liquid, extending the service life of the seamless pipe body, reducing the weight of the seamless pipe body and increasing the strength, and is particularly suitable for the field of stainless steel seamless pipe technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 This is a schematic diagram of the internal structure of the seamless pipe body in the utility model.

[0020] Figure 3 This is a schematic diagram of the outer tube and inner tube structure of the utility model.

[0021] Figure 4 This is a schematic diagram of the internal structure of the carbon fiber honeycomb core in this utility model. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present utility model are clearly and completely described below with reference to the accompanying drawings.

[0023] Example 1

[0024] like Figures 1 to 4 As shown, the utility model is a clean stainless steel seamless pipe, comprising a seamless pipe body 1, an outer pipe 11 is provided on the outside of the seamless pipe body 1, and a first energy absorption layer 12 is provided on the inside of the outer pipe 11 to increase the pressure resistance of the seamless pipe body 1, a high-strength buffer layer 13 is provided on the inside of the first energy absorption layer 12, and a second energy absorption layer 121 is provided on the inside of the high-strength buffer layer 13 to increase the pressure resistance of the seamless pipe body 1, and an inner pipe 14 is provided on the inside of the second energy absorption layer 121.

[0025] Furthermore, a wear-resistant layer 111 is provided on the outside of the outer tube 11 . The wear-resistant layer 111 is a metal ceramic plasma cladding layer as a whole, which can withstand friction and wear under high speed, high pressure and heavy load, thereby increasing the overall wear resistance of the seamless tube body 1 .

[0026] Furthermore, high-strength metal layers 131 are provided on the upper and lower sides of the high-strength buffer layer 13, and a carbon fiber honeycomb core 132 is provided between the high-strength metal layers 131 close to each other. The carbon fiber honeycomb core 132 has the high strength of carbon fiber and the light weight of the honeycomb structure, and has extremely high strength, which reduces the weight of the seamless tube body while increasing the strength.

[0027] Furthermore, the No. 1 energy absorbing layer 12 and the No. 2 energy absorbing layer 121 are both fiber reinforced composite layers, and carbon fibers and glass fibers are arranged inside the fiber reinforced composite layers. The structure of carbon fibers and glass fibers arranged inside the fiber reinforced composite layers increases the overall performance of the fiber reinforced composite layers. The combination of the two enhances the compression resistance of the seamless pipe body 1, and greatly extends the service life of the seamless pipe body 1.

[0028] Furthermore, semi-circular grooves 141 are evenly arranged around the inside of the inner tube 14. The design of the semi-circular grooves 141 can reduce the resistance of the fluid in the pipeline, can more effectively guide the liquid, reduce the resistance of the liquid in the pipeline, and make the liquid transportation smoother, thereby improving the flow efficiency of the liquid. The semi-circular grooves 141 are integrally formed with the inner tube 14, and an anti-corrosion layer 142 is provided on the inside of the inner tube 14.

[0029] Furthermore, the anti-corrosion layer 142 is a polyethylene anti-corrosion layer as a whole. The polyethylene anti-corrosion layer has a high chemical stability and can effectively resist the erosion of various chemical substances. At the same time, it has mechanical strength, including tensile strength, compressive strength and impact strength, etc., and can withstand pressure and impact force to protect the inner wall of the inner tube 14 from damage.

[0030] Working process: First, when the seamless pipe body 1 is used to transport liquid, the semi-arc groove 141 on the inner wall of the inner tube 14 can reduce the resistance of the fluid in the pipeline, can more effectively guide the liquid, reduce the resistance of the liquid in the pipeline, and make the liquid transportation smoother, thereby improving the flow efficiency of the liquid. At the same time, the inner anti-corrosion layer 142 is set as a polyethylene anti-corrosion layer, which has a high chemical stability and can effectively resist the erosion of various chemical substances. At the same time, it has mechanical strength, including tensile strength, compressive strength and impact strength, etc., and can withstand pressure and impact force, protecting the inner wall of the inner tube 14 from damage. At the same time, the wear-resistant layer 111 arranged on the outside of the outer tube 11 can withstand the friction and wear of high speed, high pressure and heavy load, thereby increasing the overall wear resistance of the seamless pipe body 1.

[0031] Secondly, when subjected to external pressure, the fiber-reinforced composite layer will absorb energy through the stretching and bending of the fibers to dilute the pressure. At the same time, glass fiber is added to the carbon fiber, which can effectively absorb and disperse stress under high loads. The combination of the two enhances the compressive resistance of the seamless tube body 1, greatly extending the service life of the seamless tube body 1. At the same time, the carbon fiber honeycomb core 132 ensures the excellent performance of the seamless tube body 1. The carbon fiber honeycomb core 132 has the high strength of carbon fiber and the lightweight characteristics of the honeycomb structure. It has extremely high strength, enhances the overall compressive resistance and stability, reduces the weight of the seamless tube body 1 while increasing the strength.

[0032] In the description of the present invention, it should be understood that the terms "front and back", "left and right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the equipment or components referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the utility model.

[0033] Of course, in this technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0034] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art based on the technical teachings of the present invention are within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A clean stainless steel seamless pipe, characterized by: The invention comprises a seamless pipe body (1), wherein an outer pipe (11) is provided on the outer side of the seamless pipe body (1), a first energy absorbing layer (12) is provided on the inner side of the outer pipe (11), a high-strength buffer layer (13) is provided on the inner side of the first energy absorbing layer (12), a second energy absorbing layer (121) is provided on the inner side of the high-strength buffer layer (13), and an inner pipe (14) is provided on the inner side of the second energy absorbing layer (121).

2. A clean stainless steel seamless pipe according to claim 1, characterized in that: The outer side of the outer tube (11) is provided with a wear-resistant layer (111), and the wear-resistant layer (111) is entirely a metal ceramic plasma cladding layer.

3. The clean stainless steel seamless pipe according to claim 1, characterized in that: High-strength metal layers (131) are provided on the upper and lower sides of the high-strength buffer layer (13), and a carbon fiber honeycomb core (132) is provided between the high-strength metal layers (131) adjacent to each other.

4. A clean stainless steel seamless pipe according to claim 1, characterized in that: The first energy absorbing layer (12) and the second energy absorbing layer (121) are both fiber-reinforced composite layers, and carbon fibers and glass fibers are provided inside the fiber-reinforced composite layers.

5. The clean stainless steel seamless pipe according to claim 1, characterized in that: Semicircular arc grooves (141) are evenly arranged around the inner periphery of the inner tube (14), the semicircular arc grooves (141) and the inner tube (14) are integrally formed, and an anti-corrosion layer (142) is provided on the inner side of the inner tube (14).

6. A clean stainless steel seamless pipe according to claim 5, characterized in that: The anti-corrosion layer (142) is entirely a polyethylene anti-corrosion layer.

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