Dredging high-strength wear-resistant steel pipe

Abstract

The dredging high-strength wear-resistant steel pipe is characterized by comprising a steel pipe body, the steel pipe body is composed of a wear-resistant steel pipe layer and a steel pipe layer, the wear-resistant steel pipe layer is arranged in the steel pipe layer, and a plurality of welding holes are formed in the steel pipe layer at certain intervals; the steel pipe layer and the wear-resistant steel pipe layer are connected together by welding from the welding holes, the steel pipe body is formed by combining the traditional steel pipe layer and the wear-resistant steel pipe layer, and the wear-resistant steel pipe layer is located in the carbon steel layer, so that the wear resistance of the steel pipe body in the using process is greatly enhanced, and the service life of the steel pipe body is prolonged. The wear-resistant steel pipe layer located inside can be in contact with conveyed materials, and particularly, the wear-resistant steel pipe layer has better impact resistance when being impacted by various rocks in the materials; and the wear-resistant steel pipe layer is wrapped by the carbon steel layer located outside, so that the overall toughness is improved, and the steel pipe body has both toughness and high-strength wear resistance.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipes used for dredging, in particular to a high-strength wear-resistant steel pipe for dredging. Background Art

[0002] The main purpose of using steel pipes in dredging projects is to clean and transport sediment, mud, rocks, and other mixed debris. During operation, the steel pipes will generate pressures of tens of kilograms due to the sediment transport. The large amount of sand and rocks in the sediment will randomly impact the inner wall of the steel pipe, causing severe wear and tear on the inner wall of the steel pipe.

[0003] The traditional steel pipes used now are made of carbon steel, basically model Q235B or Q355B. This material has high strength and hardness and is suitable for applications that need to withstand heavy loads, but its corrosion resistance and wear resistance are poor. There are also steel pipes made directly from high-strength wear-resistant steel plates, which have wear resistance several times that of carbon steel, but have poor toughness and are prone to cracking. This results in the steel pipes currently used having a relatively short service life in dredging operations, and the steel pipes always need to be replaced frequently, which also increases the investment cost of dredging projects.

[0004] In view of this, we propose a dredging high-strength wear-resistant steel pipe to solve the above problems. Utility Model Content

[0005] In view of the above technical problems, the utility model provides a high-strength wear-resistant steel pipe for dredging, which adopts a steel pipe body composed of a combination of a traditional steel pipe layer and a wear-resistant steel pipe layer, so that the steel pipe body has both toughness and high strength and wear resistance.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] The dredging high-strength wear-resistant steel pipe is characterized in that it includes a steel pipe body, the steel pipe body is composed of a wear-resistant steel pipe layer and a steel pipe layer, the wear-resistant steel pipe layer is arranged inside the steel pipe layer, a plurality of welding holes are arranged at a certain interval on the steel pipe layer, and the number of the welding holes is ≥1, and the steel pipe layer is connected to the wear-resistant steel pipe layer by welding through the welding holes.

[0008] Flanges are installed at both ends of the steel pipe body respectively, and connecting holes are provided on the flanges, and the number of the connecting holes is ≥1.

[0009] A reinforcing rib is provided between the flange and the steel pipe body, and the number of the reinforcing rib is ≥1.

[0010] Specifically, the outer diameter of the wear-resistant steel pipe layer is the same as the inner diameter of the steel pipe layer.

[0011] Beneficial effects of the utility model:

[0012] The utility model adopts a steel pipe body composed of a combination of a traditional steel pipe layer and a wear-resistant steel pipe layer, and the wear-resistant steel pipe layer is located inside the carbon steel layer, so that the wear resistance of the steel pipe body during use is greatly enhanced. The wear-resistant steel pipe layer located inside will come into contact with the conveyed material, especially the impact of various rocks in the material, and it has better impact resistance; the carbon steel layer located outside wraps the wear-resistant steel pipe layer, increasing the overall toughness, so that the steel pipe body has both toughness and high strength wear resistance;

[0013] In order to strengthen the stability of the connection between the steel pipe layer and the wear-resistant steel pipe layer, the utility model provides a plurality of welding holes arranged at intervals on the steel pipe layer. The shape of the welding holes is not restricted. The steel pipe layer and the wear-resistant steel pipe layer are connected together by using the welding holes as the connection points for welding the two.

[0014] The steel pipe body designed in the present invention can be equipped with flanges at both ends according to the usage conditions. In order to strengthen the stability of the connection between the steel pipe body and the flange, a reinforcing rib plate is provided between the rear side of the flange and the steel pipe body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of the steel pipe body of the utility model dredging high-strength wear-resistant steel pipe;

[0016] Figure 2 This is a schematic diagram of the structure of the utility model dredging high-strength wear-resistant steel pipe after the flange is installed;

[0017] Figure 3 This is a structural diagram of the utility model of the high-strength wear-resistant dredging steel pipe after being equipped with a reinforcing rib plate;

[0018] As shown in the figure: 1. Steel pipe body, 11. Steel pipe layer, 111. Welding hole, 12. Wear-resistant steel pipe layer, 2. Flange, 21. Connection hole, 3. Reinforcement rib plate. DETAILED DESCRIPTION

[0019] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", 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 device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electric welding connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] Example 1

[0023] As shown in the figure, the steel pipe body 1 is composed of a wear-resistant steel pipe layer 12 and a steel pipe layer 11. The wear-resistant steel pipe layer 12 is arranged inside the steel pipe layer 11, and the outer diameter of the wear-resistant steel pipe layer 12 is the same as the inner diameter of the steel pipe layer 11. A plurality of welding holes 111 are arranged at a certain interval on the steel pipe layer 11. The shape of the welding holes 111 is not limited. The shape of the welding holes can be various shapes such as circular holes, square holes, elliptical holes, cross holes, etc., and the number and size of the welding holes can be specified according to the usage.

[0024] The steel pipe layer 11 is connected to the wear-resistant steel pipe layer 12 by using the welding hole 111 as the connection point for welding the two, thereby reinforcing the stability of the connection between the steel pipe layer 11 and the wear-resistant steel pipe layer 12.

[0025] The diameter and length of the steel pipe body 1 are not limited and can be determined according to usage requirements.

[0026] Example 2

[0027] Depending on the usage, flanges 2 can be installed at both ends of the steel pipe body 1. The material, diameter and thickness of the flange 2 can be specified according to the usage requirements. Connection holes 21 are provided on the flange 2. The number and aperture size of the connection holes 21 can be specified according to the usage requirements.

[0028] Example 3

[0029] In order to strengthen the stability of the connection between the steel pipe body 1 and the flange 2, a reinforcing rib plate 3 is provided between the rear side of the flange 2 and the steel pipe body 1. The size, size, thickness, style and number of the reinforcing rib plate can be determined according to the use requirements.

[0030] One end of the reinforcing rib plate 3 is fixedly connected to the back of the flange 2, and the other end of the reinforcing rib plate 3 can be fixedly connected to the wear-resistant steel pipe layer 2 and the steel pipe layer 1 respectively; or the other end of the reinforcing rib plate is only welded to the outer wall of the steel pipe layer 1.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. The various components mentioned in the present invention are common technologies in the existing field. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in this utility model is defined by the appended claims and their equivalents.

Claims

1. Dredging high strength wear-resistant steel pipe, characterized by It includes a steel pipe body, which is composed of a wear-resistant steel pipe layer and a steel pipe layer. The wear-resistant steel pipe layer is arranged inside the steel pipe layer. A plurality of welding holes are arranged at a certain interval on the steel pipe layer. The number of the welding holes is ≥1. The steel pipe layer is connected to the wear-resistant steel pipe layer by welding from the welding holes.

2. The dredging high-strength wear-resistant steel pipe according to claim 1, characterized in that Flanges are installed at both ends of the steel pipe body respectively, and connecting holes are provided on the flanges, and the number of the connecting holes is ≥1.

3. The dredging high-strength wear-resistant steel pipe according to claim 2, characterized in that A reinforcing rib is provided between the flange and the steel pipe body, and the number of the reinforcing rib is ≥1.

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