FLUID CIRCULATING DEVICE, ITS MANUFACTURING METHOD, AIR HEATING-TYPE LIQUEFIED GAS EVAPORATOR AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an air heating-type liquefied gas evaporator capable of confirming the displacement after welding.

SOLUTION: This air heating-type liquefied gas evaporator comprises an evaporating part and a heating part. The evaporating part comprises an evaporation unit composed of a pair of manifold pipes 7 arranged in parallel with each other at a vertical interval, and a plurality of finned pipes 8 arranged at a lateral interval between both manifold pipes 7 and welded to the manifold pipes 7 at their both end parts. Two marking lines 22 passing through a center of a through hole 21 and positioned on a vertical face extended in the lateral direction are drawn at left and right both side parts of each through-hole 21 on an outer peripheral face of the lower manifold pipe 7 in a state of being projected outward from each fillet 23. Two marking lines 24 positioned on the vertical face are drawn at left and right both side parts of an outer peripheral face of a lower end part of each finned pipe 8 in a state of being projected outward from the fillet 23.

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