LIQUID CLEANING FILTER (VERSIONS) Russian patent published in 2008 - IPC B01D29/11 

FIELD: oil and gas transportation systems and other processing and main lines.

SUBSTANCE: invention relates to cleaning of liquids and it can be used to protect instruments and equipment from mechanical and gummy deposits. According to first design version, filtering element is made in form of system of horizontally arranged perforated tubes secured in tube plates and communicating with inlet branch pipe through cylindrical shell of tube plate pointed to inlet branch pipe, and shell welded around inlet branch pipe on inner surface of bottom of housing. According to second design version, filtering element is made in the like manner, but tube plate pointed to inlet branch pipe is installed in support ring welded to inner surface of housing through movable ring. Invention provides increase in area of filtering element without increasing overall dimensions of article, prevents development of cracks in weld joint holding inlet branch pipe to device housing.

EFFECT: improved reliability of article, increased capacity of device.

5 cl, 2 dwg