AUTOMATIC GAS-PRESSURE REGULATOR Russian patent published in 1995 - IPC

FIELD: automatic regulation; gas-distributing centers, gas fuel treatment units of compressor plants. SUBSTANCE: pressure regulator has casing, intake and outlet pipe connections, gate valve built up of conical and cylindrical parts joined together and arranged coaxially in respect to intake and outlet pipe connections. Top of conical part is placed inside throttling chamber which is essentially hollow cylinder whose left- hand portion is made as seat and right-hand one is placed in outlet flange space and fixed to casing by means of ring-spaped member, cylindrical part of gate valve is placed in gate discharge chamber which is also hollow cylinder whose left-hand portion has removable plug and right-hand one, gland. It is fixed to casing by means of pipes. In addition, its interior accommodates nut fixed via threaded joint to gate valve that carries flexible link fitted onto it in loop manner and secured in one point; its ends passed through pipes are joined to diaphragms of diaphragm actuators mounted on casing. Outlet and setting pressures are supplied to spaces under diaphragms. EFFECT: eliminated hydration, erosion wear of casing and gate valve rod. 4 cl, 1 dwg