Bending device of elongated spiral coiled tube with inlet and outlet on same side and bending method thereof

Abstract

The invention relates to a bending device of an elongated spiral coiled tube with an inlet and an outlet on the same side and a bending method thereof. The bending device comprises a main machine (1)with a rotation function, further comprises a core shaft (2) and an end cover (3), wherein one end of the core shaft (2) is fixedly connected with the main machine (1), the other end of the core shaft(2) is connected with the end cover (3), and the bending device can enable a steel tube to be bent into the spiral coiled tube (4) with the inlet and the outlet on the same side on the outer wall ofthe core shaft (2); the end cover (3) is used for fixing one end of the steel tube to be bent; and the bending device further comprises an adjustable supporting assembly (7) which is used for supporting and guiding the parts, to be bent, of the steel tube in the bending process. The bending device is simple in structure, low in manufacturing cost and is convenient to use; and the bending method issimple in operation and convenient to apply.

Description

technical field [0001] The invention relates to a common spiral coil heat exchanger device in nuclear power secondary and tertiary equipment and petrochemical container equipment, in particular to a bending device and bending method for a slender spiral coil with inlet and outlet on the same side . Background technique [0002] Spiral coil heat exchange tubes, as the common heat exchanger main body in nuclear power second and third level equipment and petrochemical container equipment, play an important role in the operation of equipment. This type of spiral coil has a wide range of specifications, ranging from steel pipe diameter, bending radius, total length, etc., and most of them require special equipment provided by professional manufacturers for bending and forming. However, for some slender spiral coils with the same side inlet and outlet, if you want to buy them directly or use special equipment to bend them, the cost will be high and it will be difficult; Coil dia...

AI Technical Summary

Problems solved by technology

However, for some slender spiral coils with the same side inlet and outlet, if you want to buy them directly or use special equipment to bend them, the cost will be high and it will be difficult; Coil diameter ≤ 0.3m, length ≤ 1.5m, the inlet and outlet pipe ends are distributed on the same side, and the straight pipe at the inlet end passes through the inside of the spiral coil, such as figure 1 shown

Many spiral coil equipment cannot solve the bending problem of the same side inlet and outlet spiral coils

[0003] For example, patent CN103212613A provides a spiral coil machine, including a pipe bender, which can process straight pipes into curved pipes. The pipe bender has a bending radius adjustment mechanism, which can control the diameter of the coil pipe; Cooperate, resist the curved pipe bent by the pipe bender from the axial direction, so that the curved pipe is inclined axially and become a spiral coil. By adjusting the axial relative position of the top wheel device and the pipe bender, the axial direction of the curved pipe is controlled. The angle of inclination makes the pitch meet the requirements; the coil bracket is used to support the coil; it solves the bending problem of the large coil with the inlet and outlet at both ends, but it cannot solve the bending of the spiral coil with the inlet and outlet on the same side in the present invention. system problem

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