HUGH PRESSURE VESSEL

摘要

The invention relates to apparatus used in the chemical and petrochemical industries as well as other branches of industry for operation with aggressive media under pressure, for example in the production of urea. The technical result achieved through the implementation of the invention is that of increasing the mechanical stability of the inner lining of the high pressure vessel and providing for the timely detection of penetrative defects in the weld seams of the lining. A high pressure vessel is proposed which comprises a main housing with through check holes and an inner lining made from sheets of corrosion-resistant material joined together by weld scams which have underplates disposed therebeneath. Each underplate is situated in a slot with gaps between the edges of the plate and the walls of the slot, while the slots themselves are located in the lining sheets on the side thereof that faces the vessel housing. The edges of the slot and plate which face the vessel housing may be beveled.