合体低压加热器的制造工艺技术

Manufacture Technology for Dupel LP Heater

合体低压加热器是利用汽轮机抽汽来加热锅炉给水的主要设备之一,它是两个管束共用一个水室、一块管板和一个壳体。壳体内部中心设有一块通长的大隔板,该隔板将两个管束隔离,形成一个既独立又连通的新型换热器。本文根据该种低加的结构特点,详细介绍了该种低压加热器主要零部件的加工、装配、焊接以及换热管与管板的连接等工艺技术,提出了新颖的工艺方案。

Dupel Low Pressure Heater is one of main equipments for beating boiler feed water using turbine extract steam. It is two tube bundles sharing a water box, a piece of tube plate aml a shell. There is a piece of big baffle in the middle of shell , which isolates the two tube bundles, formed a new independent and counected heat exchanger. On base of the heater structural features, this article introduces detailedly manufacture technology of the heater, including main parts machining, assembling and welding, jointing between tubes and tube sheet etc., new technology programmes of the heater are put forward.