Concave-convex dimpled heat transfer extrusion molding device

Abstract

The invention relates to a concave-convex dimpled heat transfer extrusion molding device. The device comprises cylinder barrels in staggered arrangement in a cylinder body, a piston rod is arranged in each cylinder barrel, a spring sleeves the piston rod, and an extrusion head is mounted on an end surface of the piston rod in an interference fit manner; a smooth pipe is arranged at the outer side of the extrusion head, and a concave-convex mold is arranged at the outer side of the smooth pipe. When the extrusion molding device is in work, the extrusion head extrudes the smooth pipe, and the extruded smooth pipe forms a cambered dimple; and meanwhile, a spherical boss of the concave-convex mold extrudes the smooth pipe in assistance, the extruded smooth pipe forms an indent dimple. The extrusion molding device disclosed by the invention has the effects that the piston rod is reset by use of the spring, the system structure is simplified, and the comprehensive manufacturing cost is lowered; and the extruded smooth pipe forms a concave-convex dimpled heat transfer pipe which is cambered and indent under the common effect of the extrusion head and the concave-convex mold. The problems of production and processing of the concave-convex heat transfer pipe are solved.

Description

technical field [0001] The invention relates to the field of processing and forming heat transfer tubes, in particular to an extrusion molding device for concave-convex cell heat transfer tubes. Background technique [0002] Heat transfer is a very common natural phenomenon and a common process in industries such as power, nuclear energy, electronics, transportation, refrigeration, chemical, petroleum, aerospace, etc. The heat exchanger occupies a key position in the above-mentioned industries. The heat exchanger is not only an indispensable part to ensure the normal operation of the entire engineering equipment, but also occupies an important share in the entire project in terms of metal consumption, power consumption and capital investment. Taking the power plant as an example, if the boiler is also used as heat exchange equipment, the capital investment of the heat exchanger accounts for about 70% of the total investment of the power plant; in petrochemical industry, the ...

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Problems solved by technology

[0005] However, although there are many kinds of heat transfer tube processing and manufacturing devices, there is currently no heat transfer tube processing and forming device that can process concave-convex cell heat transfer tubes, and can realize the concave-convex cell depth of the concave-convex cell heat transfer tube. Concave-convex cell shape, concave-convex cell curvature adjustable, controllable concave-convex cell extrusion molding processing device

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