Two-part or multi-part double-layer type wearproof impact-resistant tube and manufacture method thereof

Abstract

The invention provides a two-part or multi-part double-layer type wearproof impact-resistant tube. The wearproof impact-resistant tube comprises an outer protection tube (1) and an inner wearproof combined tube (2). The inner wearproof combined tube (2) is embedded in the outer protection tube (1) and comprises two or more tube walls which are spliced together to form a tube body with an annular cross section. The wearproof impact-resistant tube can be straight or bent. When the wearproof impact-resistant tube is straight, the upper portion and the lower portion of the inner wearproof combined tube are made of different materials; when the wearproof impact-resistant tube is bent, the big bend portion and the small bend portion of the wearproof impact-resistant tube are made of different materials. In conclusion, the inner combined tube of the wearproof impact-resistant tube is divided into at least two portions, and at least two portions are made of different materials. The wearproof impact-resistant tube of the structure has the advantages that service life can be prolonged, abrasive resistance and impact resistance can be enhanced and overall weight of the tube can be reduced.

Description

technical field

[0001] The invention relates to a conveying pipe structure used in the fields of construction, mining, metallurgy, electric power, petroleum, coal, grain processing, etc., in particular to a two- or multi-layer double-layer wear-resistant and impact-resistant pipe and a preparation method thereof. Background technique

[0002] The forming technologies of pipelines mainly include casting forming, compression molding, etc., which are formed by casting or hot and cold pressing process on the basis of forming molds; no matter what kind of machinery and equipment and pipelines, most of them use pipelines, Mainly used for oil, gas, liquid, powder, etc.; pipeline materials are cast iron, stainless steel, alloy steel, malleable cast iron, carbon steel, non-ferrous metals and plastics; in construction, mining, metallurgy, electric power, petroleum, In industries such as coal and grain processing, materials are conveyed through pipeline pressure, and the conveying pipe...

Examples

Embodiment 1

[0087] Such as Figure 1-3 As shown: In this embodiment, two or more double-layer wear-resistant and impact-resistant pipes are made into elbows, which are composed of an outer protective pipe 1 and an inner wear-resistant composite pipe 2, both of which are elbow structures . The inner wear-resistant composite pipe 2 is nested inside the outer protective pipe 1 . The outer protective tube 1 is used to protect the inner wear-resistant combined tube 2 to prevent the inner wear-resistant combined tube 2 from unnecessary damage during transportation, installation and use.

[0088] Such as Figure 4-16 As shown, the inner layer wear-resistant composite pipe 2 is divided into two parts: the inner layer wear-resistant large bend 8 and the inner layer wear-resistant small bend 12, both of which are semi-bent pipes, which are spliced ​​together to form an inner layer with a circular cross section. Layer wear-resistant composite pipe2. The large wear-resistant bend 8 of the inner l...

Embodiment 2

[0109] In this embodiment, another implementation manner of two or more double-layer wear-resistant and impact-resistant pipes is provided. Such as Figure 23 As shown, in this embodiment, two or more double-layer wear-resistant and impact-resistant pipes are composed of an outer protective pipe 1 and an inner wear-resistant combined pipe 2 . The inner wear-resistant composite pipe 2 is nested inside the outer protective pipe 1 . The outer protective tube 1 is used to protect the inner wear-resistant combined tube 2 to avoid unnecessary damage during transportation, installation and use.

[0110] The outer protection tube 1 is divided into two parts: a large bend outer protection part 7 and a small bend outer protection part 11, and the two are welded together to form an outer protection tube 1 with a circular cross section. The inner layer wear-resistant composite pipe 2 is divided into two parts: the inner layer wear-resistant large bend 8 and the inner layer wear-resistan...

Embodiment 3

[0127] Such as Figure 24-25As shown in this embodiment, two or more double-layer wear-resistant and impact-resistant pipes are made into two double-layer straight pipes, which are composed of an outer protective pipe 1 and an inner wear-resistant combined pipe 2. All are straight pipe construction. The inner wear-resistant composite pipe 2 is nested inside the outer protective pipe 1 .

[0128] The inner wear-resistant composite pipe 2 is divided into two parts: the upper wear-resistant pipe wall 31 and the lower wear-resistant pipe wall 32, both of which are half-pipes with a semicircular cross-section, and are spliced ​​together to form a ring-shaped cross-section Inner wear-resistant composite pipe 2. The upper wear-resistant pipe wall and the lower wear-resistant pipe wall are made of wear-resistant materials with different wear-resistant properties. Preferably, the wear resistance of the material used for the lower wear-resistant pipe wall is better than that of the u...

technical field

[0001] The invention relates to a conveying pipe structure used in the fields of construction, mining, metallurgy, electric power, petroleum, coal, grain processing, etc., in particular to a two- or multi-layer double-layer wear-resistant and impact-resistant pipe and a preparation method thereof. Background technique

[0002] The forming technologies of pipelines mainly include casting forming, compression molding, etc., which are formed by casting or hot and cold pressing process on the basis of forming molds; no matter what kind of machinery and equipment and pipelines, most of them use pipelines, Mainly used for oil, gas, liquid, powder, etc.; pipeline materials are cast iron, stainless steel, alloy steel, malleable cast iron, carbon steel, non-ferrous metals and plastics; in construction, mining, metallurgy, electric power, petroleum, In industries such as coal and grain processing, materials are conveyed through pipeline pressure, and the conveying pipe...

Examples

Embodiment 1

[0087] Such as Figure 1-3 As shown: In this embodiment, two or more double-layer wear-resistant and impact-resistant pipes are made into elbows, which are composed of an outer protective pipe 1 and an inner wear-resistant composite pipe 2, both of which are elbow structures . The inner wear-resistant composite pipe 2 is nested inside the outer protective pipe 1 . The outer protective tube 1 is used to protect the inner wear-resistant combined tube 2 to prevent the inner wear-resistant combined tube 2 from unnecessary damage during transportation, installation and use.

[0088] Such as Figure 4-16 As shown, the inner layer wear-resistant composite pipe 2 is divided into two parts: the inner layer wear-resistant large bend 8 and the inner layer wear-resistant small bend 12, both of which are semi-bent pipes, which are spliced ​​together to form an inner layer with a circular cross section. Layer wear-resistant composite pipe2. The large wear-resistant bend 8 of the inner l...

Embodiment 2

[0109] In this embodiment, another implementation manner of two or more double-layer wear-resistant and impact-resistant pipes is provided. Such as Figure 23 As shown, in this embodiment, two or more double-layer wear-resistant and impact-resistant pipes are composed of an outer protective pipe 1 and an inner wear-resistant combined pipe 2 . The inner wear-resistant composite pipe 2 is nested inside the outer protective pipe 1 . The outer protective tube 1 is used to protect the inner wear-resistant combined tube 2 to avoid unnecessary damage during transportation, installation and use.

[0110] The outer protection tube 1 is divided into two parts: a large bend outer protection part 7 and a small bend outer protection part 11, and the two are welded together to form an outer protection tube 1 with a circular cross section. The inner layer wear-resistant composite pipe 2 is divided into two parts: the inner layer wear-resistant large bend 8 and the inner layer wear-resistan...

Embodiment 3

[0127] Such as Figure 24-25As shown in this embodiment, two or more double-layer wear-resistant and impact-resistant pipes are made into two double-layer straight pipes, which are composed of an outer protective pipe 1 and an inner wear-resistant combined pipe 2. All are straight pipe construction. The inner wear-resistant composite pipe 2 is nested inside the outer protective pipe 1 .

[0128] The inner wear-resistant composite pipe 2 is divided into two parts: the upper wear-resistant pipe wall 31 and the lower wear-resistant pipe wall 32, both of which are half-pipes with a semicircular cross-section, and are spliced ​​together to form a ring-shaped cross-section Inner wear-resistant composite pipe 2. The upper wear-resistant pipe wall and the lower wear-resistant pipe wall are made of wear-resistant materials with different wear-resistant properties. Preferably, the wear resistance of the material used for the lower wear-resistant pipe wall is better than that of the u...

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