CN210739585U

CN210739585U - Special-shaped seamless steel pipe

Info

Publication number: CN210739585U
Application number: CN201921911701.5U
Authority: CN
Inventors: 王强
Original assignee: Zhangjiagang Hongqiang Management Co Ltd
Current assignee: Zhangjiagang Hongqiang Management Co Ltd
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-06-12
Anticipated expiration: 2029-11-07

Abstract

The utility model discloses a seamless steel pipe of dysmorphism, including two tip pipes, a middle part pipe. The end tubes are of unequal wall thickness and have an inner diameter that decreases or increases uniformly from one end to the other. The inner diameter of the middle pipe is fixed and is the same as the minimum inner diameter of the end pipe. And two ends of the middle pipe are fixedly connected with one end with a small inner diameter of the two end pipes. The inner walls of the end pipe and the middle pipe are also provided with a bright annealing layer. Compared with the prior art, the utility model discloses a structural design can realize accelerating when liquid flows through, and the increase through the velocity of flow can effectual reduction pipe blockage's risk, need not newly add equipment such as booster moreover.

Description

Special-shaped seamless steel pipe

Technical Field

The utility model relates to a seamless steel pipe specifically says to a seamless steel pipe for liquid is carried.

Background

The seamless steel pipe is made by perforating a steel ingot or a solid pipe blank to form a tubular billet, and then hot rolling, cold rolling or cold drawing, and is widely applied to the fields of fluid conveying pipelines, structural parts and the like.

For medium and long distance transportation scenes of high-viscosity liquid, the problems of pipeline blockage, flow rate reduction and the like are easy to occur, and particularly, when a small-caliber steel pipe or a turning part is needed in the process, the problems are more prominent. In order to solve the problems, special equipment is generally required to be purchased for pressurization, and the flow rate of the liquid is increased through pressurization. The introduction of the pressurizing equipment increases the investment cost of the whole line, and the subsequent maintenance of the pressurizing equipment also needs the investment of manpower and material resources.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose is in order to solve the shortcoming that exists among the prior art, and has proposed a special-shaped seamless steel pipe, including two tip pipes, a middle part pipe. The end tubes are of unequal wall thickness and have an inner diameter that decreases or increases uniformly from one end to the other. The inner diameter of the middle pipe is fixed and is the same as the minimum inner diameter of the end pipe. And two ends of the middle pipe are fixedly connected with one end with a small inner diameter of the two end pipes.

Preferably, the middle pipe and the end pipes are fixedly connected through welding.

Preferably, the middle pipe and the end pipes are fixedly connected through a thread structure.

Preferably, the inner walls of the end pipe and the middle pipe are also provided with a bright annealing layer.

Compared with the prior art, the utility model discloses a structural design can realize accelerating when liquid flows through, and increase through the velocity of flow can effectual reduction pipe blockage's risk, and specially adapted installs before the turn. And equipment such as a pressurizer and the like is not required to be additionally arranged, so that the cost of later maintenance after the whole line is put into use is reduced.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention

FIG. 2 is a schematic diagram of another embodiment of the present invention

Figure 3 is a schematic view of the usage state of the present invention

Detailed Description

Embodiments of the present invention will now be described with reference to the accompanying drawings. As shown in the attached figure 1, the seamless steel pipe comprises an end pipe (1) and a middle pipe (2). The end pipe (1) has a wall thickness which is not uniform and the inner diameter of the end pipe is uniformly reduced or increased from one end to the other end. The inner diameter of the middle pipe (2) is fixed and is the same as the minimum inner diameter of the end pipe (1). And two ends of the middle pipe (2) are fixedly connected with one end of the two end pipes (1) with small inner diameter.

The middle pipe (2) is fixedly connected with the end pipe (1) through welding.

As shown in fig. 2, the middle pipe (2) and the end pipe (1) are fixedly connected through a thread structure.

Fig. 3 is the utility model discloses the user state schematic diagram, the utility model discloses the structure is placed before the pipeline turns, when liquid flows through, can realize accelerating of liquid through special structural design, can effectually avoid the pipeline to turn the liquid velocity of flow decline the jam scheduling problem that causes.

In addition, the inner wall of the steel pipe can be subjected to heat treatment through bright annealing to form a bright annealing layer, so that the smoothness of the inner wall is further improved, and the resistance of the pipe wall to fluid is reduced.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.

Claims

1. The utility model provides a dysmorphism seamless steel pipe which characterized in that: comprises two end pipes and a middle pipe; the end pipe has unequal wall thickness, and the inner diameter of the end pipe is uniformly reduced or increased from one end to the other end; the inner diameter of the middle pipe is fixed and is the same as the minimum inner diameter of the end pipe; and two ends of the middle pipe are fixedly connected with one end with a small inner diameter of the two end pipes.

2. The special-shaped seamless steel tube according to claim 1, characterized in that: the middle pipe and the end pipe are fixedly connected through welding.

3. The special-shaped seamless steel tube according to claim 1, characterized in that: the middle pipe is fixedly connected with the end pipe through a thread structure.

4. The special-shaped seamless steel tube according to claim 1, characterized in that: the inner walls of the end pipe and the middle pipe are also provided with a bright annealing layer.