SAFETY HYDRAULIC VALVE Russian patent published in 2013 - IPC F16K17/19 A62C4/00 

FIELD: machine building.

SUBSTANCE: safety hydraulic valve contains housing with lead, cup, casing and drain holes. Housing consists of two parts: lower cylindrical and upper, coaxial with it, conical. On the conical part there installed is a lid with integrated fire safety device. On the lid there mounted are annular air offtake and assembling bolts. Lower cylindrical and upper conical parts of housing are interconnected via flanges by means of fasteners. In the lower part of housing there mounted is a cup consisting of upper conical cup and lower cylindrical cup. Drain hole is located in bottom part of housing. In upper part of housing there mounted is cylindrical casing with expanding egg-shaped pipe closed by screen and provided with exhaust hole. Casing is fixed in upper part of housing by means of inclined partition with drain hole located in upper part of housing. Fire safety device is made from pack of meshes collected in the pack as mesh-plates parallel to supporting flanges of base and a lid of net-plates and as mesh belts in tight winding, or it is made from an element in the shape of porous ceramic metal plate, at that channels of minor diameter are those of porous ceramic metal or metal fibre obtained by pressing and baking of small metal balls or pieces of metal wire with diameter of 25÷100 micron.

EFFECT: increasing the protection efficiency of process equipment against explosions by speedup and reliability of actuation.

1 dwg