Natural Circulation Alloy Steel Hrsg Drum Cylindrical Pressure Vessel

Product Description

Drum is a cylindrical pressure vessel used in water-pipe boiler for steam and water separation and steam purification, forming a water circulation loop and string pot water. Its main function is to receive the water from economizer, separate steam from water and supply water to circulation loop, and transport saturated steam to superheater. There is a certain amount of water in the drum, which has a certain of heat and material savings. When the working conditions change, the speed of vapor pressure change can be slowed down. When the water supply and load are not coordinated for a short time, it plays a buffer role. The drum is equipped with internal devices for steam-water separation, steam cleaning, pot medication and continuous sewage discharge to ensure steam quality, as shown in the figure.

Drum is the most bulky and expensive thick-wall pressure-bearing component in boiler. The drum not only withstands high internal pressure, but als produces thermal stress due to the fluctuation of wall temperature caused by the change of operating conditions. Therefore, the working conditions are bad, the effective operation condition supervision is needed.

Structure and material

The working conditions of drum are complex and the consequences of accidents are serious. It is necessary to strictly control the chemical composition, mechanical properties and welding and processing quality of material used in drums, and to pass a series of strict tests. The cylinder is composed of a cylinder body and a head.

1. Cylinder:refers to the cylinder part of the drum. Its inner diameter and length are related to the circulation mode, boiler capacity, steam parameters and the structure of inner equipment. Steam drum is usually rolled on multi-roll reel machine. The drum wall of subcritical pressure boiler is too thick to be pressed on giant press.

2. Head: Subcritical pressure boilers are usually hemispherical, high pressure and ultra high pressure boilers are ellipsoidal, medium pressure boilers are relatively flat ellipsoidal, with manholes on the head for installation and maintenance of internal devices. The head is pressed on a hydraulic press or an oil press.

Our Company

HD Boiler established in 1985, Zhangjiagang Hua Dong Boiler Co., Ltd. (trading as HD Boiler), is a professional industrial manufacturer, producing utility boiler,industrial boiler,HRSG boiler and all kinds of boiler parts, such as waterwall panels, economizers, air preheaters, superheaters, headers, spiral fin tubes, H-fin tubes, heat pipes etc. HD Boiler is located in Dong Lai Industrial Park, east suburb of Zhang Jia Gang City. The plant's location is around 150km Expressway to Shanghai Port or 60km State Road to Suzhou or Wuxi, with transportation extending in all directions conveniently and quickly.