Fluid handling – Line condition change responsive valves – Line flow effect assisted
Patent
1975-05-29
1976-11-02
Weakley, Harold W.
Fluid handling
Line condition change responsive valves
Line flow effect assisted
13750546, 13763022, F16K 1734
Patent
active
039890600
ABSTRACT:
There is disclosed a gas pressure regulator having valving means comprising an orifice sleeve slidably mounted in a bushing which is located in an aperture in a dividing wall in the regulator casing located between the inlet and outlet means of the regulator, for movement toward and from a stationary upstream valve seat carried by the bushing to regulate the flow of fuel gas from the inlet through the regulator to the outlet thereof. To monitor the flow of gas through the meter the bushing has a valve seat adapted to be engaged by a valve operated by a valve stem to control the pressure of the gas at the outlet of the regulator and to shut off the flow of gas into the diaphragm chamber when the pressure of the gas exceeds a predetermined value and the regulating valve for some cause fails to stop the flow of gas. The bushing with the pressure regulating valve seat thereon and the orifice sleeve may be conveniently inserted into the passage in the dividing wall in the regulator as a unit, the bushing being slidable into the passage through the dividing wall between the inlet and outlet means of the valve housing and may be secured thereto by a single screw threaded into a portion of the valve housing. The valve stem makes abutting engagement with the orifice sleeve and thus avoids the necessity of securing the valve stem to the orifice sleeve when assembling the regulator. The downstream end of the bushing is provided with a segmental lip which acts as a loading ring to produce boost in the regulator. The circumference of the portion of the sleeve engaging an obturating ring carried by the bushing and of an upstream orifice of the orifice sleeve are substantially equal and provision is made so that the pressure of the gas opposing the downstream movement of the orifice sleeve is the same as that opposing the upstream movement of the orifice sleeve so that the orifice sleeve is balanced and the pressure of the gas in the usual piping between the regulator and the connected gas appliances is substantially uniform regardless of variations in the rate of flow of the gas within practical limits.
REFERENCES:
patent: 2122987 (1938-07-01), McElwaine
patent: 2669071 (1954-02-01), St. Clair
patent: 2888949 (1959-06-01), Evans
patent: 3207175 (1965-09-01), Pauly
patent: 3407841 (1968-10-01), Semon
patent: 3488685 (1970-01-01), Hughes
Johnson Arthur A.
Textron Inc.
Weakley Harold W.
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