Simple device for assembling pressure steel pipe stiffening ring

Abstract

The invention relates to a simple device for assembling a pressure steel pipe stiffening ring. An upright and a supporting panel are welded together; the supporting panel and a rail fixed frame are connected into a whole in a welding manner; rails are fixed on the supporting panel by the rail fixed frame; one ends of lateral pull plates are sleeved on the rails; the other ends of the lateral pull plates are pressed against the inner wall of a steel pipe body in the working process; sleeves and the supporting panel are connected into a whole in a welding manner; springs are placed in the sleeves to take a supporting effect on the rails; and jacks are placed on the rails and are not connected with the rails. The device is simple to install and is convenient to use; assembling quality of the steel pipe stiffening ring and quality of the surface of the pipe wall are effectively controlled; auxiliary workload of steel pipe manufacturing is greatly reduced; production efficiency is improved; cost is reduced; the simple device is easy to disassemble; elevation and flatness are accurate to control; and the simple device can be repeatedly used.

Description

technical field [0001] The invention relates to a simple device for assembling stiffening rings of penstock steel pipes, in particular to a simple device for facilitating the assembling of stiffening rings of penstock steel pipes and ensuring the surface quality of pipe walls of penstock steel pipes. Background technique [0002] Penstocks are used more and more in hydropower stations, especially the water delivery system of pumped storage power stations is affected by geological conditions, so a large number of penstocks are often used as linings. With the continuous development of science and technology, 600Mpa and 800Mpa high-strength steel plates are also widely used in the manufacture of pressure steel pipes, which also puts forward higher requirements for the manufacturing technology of pressure steel pipes. Components should be carried out according to the corresponding welding requirements; in addition, after removal and grinding, magnetic particle inspection is also...

AI Technical Summary

Problems solved by technology

After the stiffening rings are assembled, the gantry clamps should be cut off according to the specifications. However, according to past experience, most construction workers use hard breaking methods when dismantling the gantry, which greatly damages the base material and even creates deep pits. Re-welding is required after grinding

In addition, if you do not pay attention to the grinding, it will also damage the base metal, reduce the thickness, and weld repair is required if it exceeds 2mm, which seriously affects the quality of the pressure steel pipe.

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