Strengthened steel pipe with rib spirally wound as well as special equipment and method for manufacturing preparing strengthened steel pipe

Abstract

The invention belongs to the technical field of pipes and discloses a strengthened steel pipe with a rib spirally wound as well as special equipment and a method for preparing the strengthened steel pipe. The main technical scheme of the invention is as follows: the strengthened steel pipe comprises a pipe body, wherein the pipe body is formed by spirally rolling and welding a large steel strip; a structure wall strengthening rib is spirally wound and welded on the outer wall of the pipe body; the structure wall strengthening rib is formed by a small steel strip rolled to be structure wall shaped and spirally wound. During manufacture of the strengthened steel pipe, the large steel strip is formed into the pipe body in advance, the small steel strip is formed into a spiral strengthening rib, on a combined molding unit, the spiral strengthening rib is mounted on the pipe body in a sleeving manner, and is pressed by a limiting rolling wheel and continuously and discontinuously welded. A spiral welding seam, the structure wall strengthening rib and welding nodes greatly improve the ring stiffness and bearing strength of pipes, the wall thickness of the pipe body is remarkably reduced, and the strengthened steel pipe is particularly applicable to negative-pressure pipelines and positive-pressure liquid pipe with lower bearing capacity, and can also be applicable to positive-pressure gas conveying pipelines.

Description

Technical field [0001] The present invention belongs to the field of pipeline technology. The specific lecture has disclosed a spiral wound tendon to enhance the steel pipe and its dedicated equipment and preparation methods. Background technique [0002] At present, most of the pipelines used in the coal mining industry are used in pipelines for gas pumping.The steel wire mesh polyethylene polyethylene pipe is verified by the market. Because the raw materials used need to add charcoal black, red phosphorus and other materials to achieve anti -static and flame retardant performance, it is more common to cause crispy cracking of pipes. Many mining bureaus are now.It has been explicitly prohibited; steel pipelines, especially large -caliber pipes, have thick wall thickness, and their cyclical steel and strength performance indicators far beyond their required performance, resulting in waste of materials, andThe weight of the steel pipeline is heavier, the installation is difficult,...

AI Technical Summary

Problems solved by technology

The use of steel mesh skeleton polyethylene pipes has been verified by the market. Since the raw materials used need to add materials such as carbon black and red phosphorus to achieve antistatic and flame retardant properties, brittle cracking of the pipes is more common. Now many mining bureaus It has been expressly prohibited to use; steel pipes, especially pipes with larger diameters, have thicker wall thicknesses, and their ring rigidity and strength performance indicators far exceed the performance required for their use, resulting in waste of materials, and Steel pipes are heavy, difficult to install, and expensive; plastic-coated steel pipes and plastic-lined steel pipes use steel pipes as the body material, which also has the problems of waste of materials, difficulty in installation, and high costs

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