Bending device for spiral coil pipe with inner side linear type routing pipe

Abstract

The invention discloses a bending device of a spiral coil pipe with an inner side linear type pipe, which comprises a rotatable coil pipe mandrel assembly and a coil pipe manufacturing tool, after a raw material steel pipe is bent by 90 degrees, one end of the raw material steel pipe is inserted into the coil pipe mandrel assembly, the other end of the raw material steel pipe penetrates through the coil pipe manufacturing tool, the coil pipe mandrel assembly comprises a coil pipe mandrel and a baffle plate, and the baffle plate is connected with the coil pipe mandrel assembly. The coil pipe mandrel comprises an inner shaft and an outer shaft which are eccentrically arranged, the inner shaft protrudes out of the edge of the outer shaft, a mandrel inner hole is formed in the coil pipe mandrel in the axial direction of the coil pipe mandrel, the linear section of the raw material steel pipe is inserted into the mandrel inner hole, the inner side of the raw material steel pipe is attached to the face A of the coil pipe mandrel, and the outer side of the coil pipe mandrel is attached to the face B of the raw material steel pipe. A baffle is fixed to the outer side of the raw material steel pipe through bolts 1-3. The coil pipe bending machine is low in cost, short in whole process time, high in efficiency and capable of bending complex coil pipes, and meets the requirements of industries such as petrifaction and refinery.

Description

technical field [0001] The invention relates to the technical field of mechanical manufacturing supporting equipment, in particular to a bending device of a spiral coil with an inner linear pipe. Background technology [0002] Spiral coil is an important part of petrochemical pressure vessel. It has a wide variety, complex structure and shape, various bending processes, expensive bending equipment and difficult to ensure the bending effect. At present, when bending spiral coil, special coil pipe bender and special mold are usually used, which not only increases the investment of manufacturing cost, but also has limitations, Such bending equipment can only bend the ordinary spiral coil with two ends out of the pipe, and the bending coil tooling is complex, the cost is high, the whole process takes a long time and the efficiency is low. It can not bend the complex coil, and can not be applied to the sealing auxiliary system - Coolant coil with high quality requirements. The whole p...

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Problems solved by technology

[0002] The spiral coil is an important part of the petrochemical pressure vessel. It has various types, complex structures and shapes, and various bending processes. The bending equipment is expensive and the bending effect is difficult to guarantee. At present, when bending the spiral coil, usually The use of special coil pipe bending machines and special molds not only increases the investment in manufacturing costs, but also has limitations. Such bending equipment can only bend ordinary spiral coil pipes with two ends of the pipe, and the bending Coil tooling is complex, high cost, long time-consuming, low efficiency, complex coils cannot be bent, and cannot be applied to the sealing auxiliary system with high quality requirements-coolant coils. The whole process requires heating, which greatly reduces it. The inherent quality, compressive strength, corrosion resistance, etc. have been greatly reduced, which cannot meet the growing requirements of petrochemical, refining and other industries.

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