Regulator means for automatically shutting the gas pipeline passage off during pressure reducing failure

A regulator means for automatically shutting off gas flow from a high pressure source during pressure reducing failure includes:

• a body member which is cylindrical in shape including a gas inlet and a gas outlet on its two outer sides, an inlet nozzle provided near the inner lateral end of said gas inlet, a thin wall integrally formed with said body member located transversely in said body member separating and dividing space in said body member into a pressure reducing valve chamber and a timing device chamber, a telescopic through hole positioned off the center of the wall surface of said thin wall and also passing through said thin wall, three gas outlet ports located around the periphery of said telescopic through hole and also passing through said thin wall, each of said gas outlet ports spaced by three thin partition bars, wall surfaces of said thin wall which face said pressure reducing valve chamber being provided with a slightly higher flange around the outer periphery of said gas ports, said higher flange near the outer periphery of said gas ports, said body member being provided with two opposite thin arcuate plates which are integrally formed with said wall surface defining a space for a piston valve assembly, immediate at the outer sides of said two thin arcuate plates two opposite round support posts with a suitable height provided respectively, a screw hole provided on each of the ends of said two opposite round support posts to mesh a centering guide plate, two opposite protruding posts being provided on two front internal sides of said inlet nozzle, each of said two protruding posts being higher than the inlet nozzle and having a rectangular recess and a threaded hole respectively to secure a pressure reducing component, a wall surface of said thin wall facing the timing device chamber being provided with upright annular flange which is higher than said wall surface and also is located near said gas outlet ports, a semi-circular groove provided on said wall surface opposite to the semicircular protruding surface an outer gas outlet port located at the groove surface of said semicircular groove near the gas outlet, a small elongated moon-shaped groove being provided at the opposite side relative to said semi-circular groove and also communicative to the gas inlet nozzle serving as a gas inlet channel, an annular recess located outside the periphery of said upright annular flange for meshing with a leakage-proof diaphragm, semi-circular support racks within said timing device chamber integrally formed with said body member and also having a height shorter than that of said timing device chamber, said racks having threaded holes at their top end faces to match corresponding holes in a timing device cover plate for fastening the timing device to said body member by screws;
• a transmission assembly located at the bottom of the timing device chamber for supporting the timing device and for actuating the piston valve, said transmission assembly including a deformable diaphragm in communication with said piston valve, said timing device permitting gas flow for a preset length of time by urging said piston valve open for the preset time period;
• a leakage-proof timing chamber diaphragm located between the transmission assembly and the thin wall in the body member;
• a timing device assembly supported by the transmission assembly;
• a fixing cover plate for fixing the timing device with respect to the transmission plate base;
• a time scale plate placed over the fixing plate;
• a gas valve rotary disc located on the body member top;
• a piston valve assembly located in the pressure reducing valve chamber for controlling the gas flow from the pressure reducing valve chamber said piston valve assembly in communication with said timing device through said transmission assembly and said timing chamber diaphragm;
• a pressure reducing valve assembly including a pressure reducing component for alternately opening and closing said inlet nozzle for alernately admitting and closing off flow of high pressure gas into said pressure reducing chamber, a leakage-proof pressure reducing diaphragm separating the pressure reducing chamber from outside the regulator means, said pressure reducing diaphragm controlling said pressure reducing component, a round metal plate supporting said pressure reducing diaphragm, a spring urging said round metal plate thereby urging said diaphragm and thereby controlling said pressure reducing component, a pressure reducing valve cover, an adjustment nut for adjusting said spring, and a bottom cover, whereby a predetermined pressure in said pressure reducing chamber is controlled by the opposing tendencies of high pressure gas to open said inlet nozzle by opening said pressure reducing component in opposition to the opposing tendency of the pressure reducing component to be closed against the inlet nozzle by the urging of the spring which urges the pressure reducing diaphragm;
• an automatic overflow control device mounted at the gas inlet of the body member including an automatic pipeline passage shut-off assembly including a release button assembly;
• wherein when flow of high pressure gas from the high pressure source is cut by the pressure reducing component to provide gas of reduced pressure in the pressure reducing chamber during normal pressure reducing operation, the reduced pressure gas in the pressure reducing chamber passes through the piston valve assembly which is operated and opened by the timing device and the deformable diaphragm of the transmission assembly and then flows from the gas outlet to an apparatus that consumes the gas until the preset length of time on the timer device expires, and
• wherein when a pressure reducing failure occurs and the pressure in the pressure reducing chamber exceeds a predetermined reduced pressure, the deformable diaphragm of the transmission assembly is deformed by the piston valve which is urged into its off position by the high pressure gas in the pressure reducing chamber to prevent high pressure gas from flowing out from the pressure reducing chamber, when said deformable diaphragm is deformed by said piston valve from high pressure gas in the pressure reducing chamber, said deformable diaphragm prevents the timer device from opening said piston valve thereby preventing gas to flow out from the pressure reducing chamber even before the preset length of time expires.