CRYOGENIC LIQUID FILTER Russian patent published in 2017 - IPC B01D29/11 

FIELD: machine engineering.

SUBSTANCE: cryogenic liquid filter contains a cylindrical housing with a filtering element, made in the form of a volume cone, which vertex is directed towards the flow of the filtered liquid, and the base is fixed to the housing. The filtering element is made in the form of several coaxially arranged volume conical sections (not less than two) and connected by an electric welding through the support rings. The volume conical sections are made of perforated conical pylons with a cone angle at the vertex equal to α=16÷20°, strapped along the height by the ring shells, and the vertices of the conical sections are closed by conical rings. Two meshes with different penetrating power are installed on the volume conical sections, which are attached to the conical pylons, support rings, ring shells and to the conical ring by means of spot welding. The first layer of the mesh is a strong wire mesh with cell of 2×2 mm, made of stainless wire 0.4-0.5 mm, and the second layer of a filtering mesh with a cell of 75-80 mcm made of stainless wire with a diameter of 50-60 mcm. The mentioned meshes are attached to the volume sections by means of spot welding, which is carried out through a metal tape with a thickness of 0.35 mm. Perforations in the conical pylons are made in the form of round holes and in the form of a trapezoid. The conical pylons within the volume sections form flow cavities, which are interconnected through the perforations.

EFFECT: increased filter service life, increased reliability.

6 cl, 4 dwg