Novel stainless steel and carbon steel composite pipeline
By setting carbon steel pipes and an inner layer in a stainless steel composite pipe, and attaching an aluminum foil layer and a polyurethane layer to the outside, the problem of sudden temperature drop in materials during long-distance transportation is solved, achieving corrosion resistance and heat preservation effects, making it suitable for conveying temperature-sensitive materials.
Patent Information
- Application Number
- CN202520019314.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-06
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-01-06
AI Technical Summary
Existing stainless steel composite pipes may cause a sudden drop in material temperature when transporting materials with temperature requirements over long distances.
An inner layer is fixed to the outside of a carbon steel pipe, and a stainless steel pipe is fixed to the outside of the inner layer. An aluminum foil layer is installed on the inside of the inner layer and attached by arc spraying. A polyurethane layer is installed on the outside. The carbon steel and stainless steel pipes are spot welded at specific connection points.
It improves the strength and corrosion resistance of the pipeline, retains heat internally, and prevents sudden temperature drops, making it suitable for conveying materials with strict temperature requirements.
Smart Images
Figure CN223740253U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to stainless steel carbon steel composite pipeline technical field, specifically to a new stainless steel carbon steel composite pipeline. BACKGROUND
[0002] The stainless steel composite pipe is a new material made of stainless steel and carbon structural steel by non-destructive pressure synchronous compounding, which has the corrosion resistance and wear resistance of stainless steel, excellent appearance, and good bending strength and impact resistance of carbon steel.
[0003] The existing patent CN2777320Y double metal composite pipe presents that the utility model relates to industrial and civil metal pipe. The composite pipe includes base pipe and inner cladding pipe. The base pipe is carbon steel pipe, and the inner cladding pipe is thin-wall stainless steel welded pipe, and a copper-based or nickel-based solder is arranged between the base pipe and the inner cladding pipe, which can form very firm metallurgical bonding between the base pipe and the inner cladding pipe. The double metal composite pipe of the utility model can replace pure stainless steel pipe to greatly reduce material cost. The utility model can be widely used in fluid conveying engineering of petroleum, chemical industry, electric power, food, water supply and the like.
[0004] However, although the existing patent CN2777320Y can be widely used in fluid conveying engineering of petroleum, chemical industry, electric power, food, water supply and the like, when the composite pipeline needs to transport some materials with certain temperature requirements, if the conveying distance is long, the temperature of the materials may be suddenly reduced. UTILITY MODEL CONTENT
[0005] (I) technical problem solved
[0006] The utility model aims at providing a new stainless steel carbon steel composite pipeline to solve the problem that when the composite pipeline needs to transport some materials with certain temperature requirements, if the conveying distance is long, the temperature of the materials may be suddenly reduced.
[0007] (II) technical scheme
[0008] To achieve the above purpose, the utility model provides the following technical scheme: a new stainless steel carbon steel composite pipeline, which comprises a carbon steel pipeline, an inner cladding layer is fixedly arranged on the outer side of the carbon steel pipeline, and a stainless steel pipeline is fixedly arranged on the outer side of the inner cladding layer.
[0009] Preferably, an aluminum foil layer is arranged on the inner side of the inner cladding layer, the aluminum foil layer is uniformly attached to the outer surface of the carbon steel pipeline by electric arc spraying, and the spraying thickness is 0.5-0.8 cm.
[0010] Preferably, a polyurethane layer is provided on the outer side of the aluminum foil layer, and the polyurethane layer is sprayed onto the surface of the aluminum foil layer with a thickness of 0.6 to 0.8 cm by thermal spraying.
[0011] Preferably, a welding zone one is provided at the top of the connection between the carbon steel pipe and the stainless steel pipe on one side, and a welding zone two is provided at the bottom of the connection between the carbon steel pipe and the stainless steel pipe on one side. The carbon steel pipe provides high strength, enabling it to withstand greater pressure and weight, and offers strong corrosion resistance, easy processing, and connection. The aluminum foil layer provides heat insulation, moisture protection, and thermal insulation. The polyurethane layer provides oil resistance, wear resistance, low-temperature resistance, aging resistance, high hardness, and heat insulation, facilitating heat retention inside the carbon steel pipe. The stainless steel pipe provides strong corrosion resistance, high hardness, and resistance to both high and low temperatures.
[0012] Preferably, a welding zone three is provided at the bottom of the connection between the carbon steel pipe and the stainless steel pipe on the side away from welding zone two, and a welding zone four is provided at the top of the connection between the carbon steel pipe and the stainless steel pipe on the side away from welding zone two. The carbon steel pipe and the stainless steel pipe are welded by spot welding in welding zones one, two, three and four.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. This new type of stainless steel-carbon steel composite pipe has high strength due to the carbon steel pipe, which can withstand greater pressure and weight, has strong corrosion resistance, is easy to process and connect, and the aluminum foil layer plays a role in heat insulation, heat preservation and moisture protection.
[0015] 2. This new type of stainless steel-carbon steel composite pipe features a polyurethane layer that provides oil resistance, wear resistance, low-temperature resistance, aging resistance, high hardness, and heat insulation, effectively trapping heat inside the carbon steel pipe. The stainless steel layer gives the pipe strong corrosion resistance, high hardness, and resistance to high and low temperatures. The carbon steel and stainless steel pipes are spot-welded in welding zones one, two, three, and four. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0017] Figure 2 This is a schematic cross-sectional view of the present invention.
[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the inner sandwich layer of this utility model;
[0019] Figure 4 This is a partial cross-sectional structural diagram of the present invention.
[0020] In the figure: 1, carbon steel pipeline; 2, inner sandwich layer; 3, stainless steel pipeline; 4, aluminum foil layer; 5, polyurethane layer; 6, welding area one; 7, welding area two; 8, welding area three; 9, welding area four. DETAILED DESCRIPTION
[0021] 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 described embodiments 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.
[0022] Please refer to Figures 1-4 The utility model provides a technical scheme: a novel stainless steel carbon steel composite pipeline, including carbon steel pipeline 1, the outside fixed setting of carbon steel pipeline 1 has inner sandwich layer 2, the outside fixed setting of inner sandwich layer 2 has stainless steel pipeline 3.
[0023] The inside of inner sandwich layer 2 is provided with aluminum foil layer 4, which is uniformly attached to the outer surface of carbon steel pipeline 1 by electric arc spraying, and the spraying thickness is 0.5-0.8 cm. The outside of aluminum foil layer 4 is provided with polyurethane layer 5, which is sprayed on the surface of aluminum foil layer 4 by thermal spraying, and the spraying thickness is 0.6-0.8 cm. The top of the one side connection of carbon steel pipeline 1 and stainless steel pipeline 3 is provided with welding area one 6, the bottom of the one side connection of carbon steel pipeline 1 and stainless steel pipeline 3 is provided with welding area two 7, the bottom of the one side connection of carbon steel pipeline 1 and stainless steel pipeline 3 away from welding area two 7 is provided with welding area three 8, and the top of the one side connection of carbon steel pipeline 1 and stainless steel pipeline 3 away from welding area two 7 is provided with welding area four 9. When the novel stainless steel carbon steel composite pipeline is used, the setting of carbon steel pipeline 1 makes the pipeline have high strength, can bear large pressure and weight, has strong corrosion resistance, is easy to process and connect, the setting of aluminum foil layer 4 plays the role of heat insulation, moisture-proof and heat preservation, the setting of polyurethane layer 5 plays the role of oil resistance, wear resistance, low temperature resistance, aging resistance, high hardness and heat insulation, which is convenient for locking heat in the inside of carbon steel pipeline 1, the setting of stainless steel pipeline 3 makes the pipeline have strong corrosion resistance, high hardness, high temperature resistance and low temperature resistance, and carbon steel pipeline 1 and stainless steel pipeline 3 are welded by spot welding at welding area one 6, welding area two 7, welding area three 8 and welding area four 9.
[0024] Working principle: when the new stainless steel carbon steel composite pipeline is used, the setting of the carbon steel pipeline 1 makes the pipeline have high strength, can bear larger pressure and weight, has strong corrosion resistance, is easy to process and connect, the setting of the aluminum foil layer 4 plays the role of heat insulation, moisture-proof and heat preservation, the setting of the polyurethane layer 5 plays the role of oil resistance, wear resistance, low temperature resistance, aging resistance, high hardness, heat insulation, can lock the heat in the inside of the carbon steel pipeline 1, the setting of the stainless steel pipeline 3 makes the pipeline have strong corrosion resistance, high hardness, high temperature resistance and low temperature resistance, the carbon steel pipeline 1 and the stainless steel pipeline 3 are welded by the spot welding mode at the welding area one 6, the welding area two 7, the welding area three 8 and the welding area four 9.
[0025] Finally, it should be noted that the above content is only used to illustrate the technical scheme of the present application, and is not a limitation on the protection scope of the present application. Simple modifications or equivalent replacements of the technical scheme of the present application made by those skilled in the art do not deviate from the essence and scope of the technical scheme of the present application.
Claims
1. A new type of stainless steel carbon steel composite pipe comprising a carbon steel pipe (1) characterized in that: The outer side of the carbon steel pipeline (1) is fixedly provided with an inner sandwich layer (2), the outer side of the inner sandwich layer (2) is fixedly provided with a stainless steel pipeline (3), the inner side of the inner sandwich layer (2) is provided with an aluminum foil layer (4), the aluminum foil layer (4) is uniformly attached to the outer layer surface of the carbon steel pipeline (1) by means of electric arc spraying, the spraying thickness is 0.5-0.8 cm, the outer side of the aluminum foil layer (4) is provided with a polyurethane layer (5), the polyurethane layer (5) is sprayed on the surface of the aluminum foil layer (4) by means of thermal spraying, and the spraying thickness is 0.6-0.8 cm.
2. A novel stainless steel carbon steel composite pipe as claimed in claim 1, wherein: The top of the one side connection of the carbon steel pipeline (1) and the stainless steel pipeline (3) is provided with a welding area one (6), and the bottom of the one side connection of the carbon steel pipeline (1) and the stainless steel pipeline (3) is provided with a welding area two (7).
3. A novel stainless steel carbon steel composite pipe as claimed in claim 2, wherein: The bottom of the one side connection of the carbon steel pipeline (1) and the stainless steel pipeline (3) away from the welding area two (7) is provided with a welding area three (8), and the top of the one side connection of the carbon steel pipeline (1) and the stainless steel pipeline (3) away from the welding area two (7) is provided with a welding area four (9).