US 4,787,416 A · Regulator means for automatically shutting pipeline passage off during pressure reducing failure

Abstract

A regulator means for automatically shutting off gas flow in a pipeline during pressure reducing failure is provided. The regulator means includes a body member, a pressure reducing valve assembly, a switching valve assembly, a timing device for a predetermined time period of gas flow, a transmission plate for controlling switching valve assembly by the timing device, and an automatic overflow control assembly. The body member is provided with a pressure reducing valve chamber, a timing device chamber and a thin wall located between the pressure reducing valve chamber and the timing device chamber. The timing device chamber receives the timing device, and the pressure reducing valve chamber receives the pressure reducing valve assembly. The switching valve assembly is arranged at the outlet port of the gas flow passage. The switching valve assembly consists of a spindle, a leakage-proof seal ring, and a spiral spring. The transmission plate can control the left and right displacements of the spindle of the switching valve assembly to make the switching valve carry out the opening and closing functions and can signal the user to learn the occurrence of a pressure reducing failure. An up-stream automatic gas leakage over flow control assembly is located at the inlet port of the body member. The automatic gas leakage overflow control assembly consists of a steel bead for blocking gas passage automatically and a release button. During gas leaking and overflowing, the steel bead automatically blocks the gas flow through the pipeline. When the user wants to resume gas flow, he passes down the release button displacing the steel bead from its blockage position, and then the gas flow in the pipeline is restored.

A regulator means for automatically shutting off gas flow during pressure reducing failure includes:

a body member which is cylindrical in shape and is provided with a timing device chamber including a top face;
a pressure reducing valve chamber;
a thin wall that partitions and is located between said two chambers, said thin wall including an upper surface and a lower surface;
outer ends of both sides of said body member having a gas inlet port and a gas outlet port;
an inner end of said gas inlet port being provided with an inlet nozzle;
a wall surface of said thin wall facing said timing device chamber and having four semi-circular cross-sectional support racks including tops formed integrally with said body member and with a height slightly shorter than that of the top face of said timing device chamber, and the top of said support racks being provided with threaded holes for engaging said timing device cover plate;
a projection provided on said upper wall surface of thin wall;
said projection including a through hole communicating with said gas outlet port;
three projections being arranged approximately equally spaced on said upper wall surface of thin wall;
the lower wall surface of thin wall facing the reducing valve chamber being provided with two opposite protruding posts in front of both sides of said inlet nozzle and said two posts being longer than the length of the inlet nozzle and having a rectangular recess and a threaded hole respectively on their tops for installation of a pressure reducing valve component;
for controlling gas flow through said inlet nozzle;
timing device means attached to said body member, said timing device means including a bendable transmission plate being attached to a switching valve which is constructed and arranged to be biased toward a closed position by pressure in the reducing chamber against the resilience of the bendable transmission plate;
a cover plate for fixing said timing device with respect to said body member;
a time scale plate located above said cover plate for permitting a user to set a time for gas use;
a rotary disc located on top of said body member for setting said timing device;
a switching valve assembly including a switching valve in said pressure reducing valve chamber for controlling the reduced pressure gas flow;
a pressure reducing valve assembly including a pressure reducing component, a leakage-proof seal diaphragm, a round metal plate, a spring, a pressure reducing valve cover plate, an adjusting ring supporting said spring, and a bottom cover said pressure reducing valve assembly for adjusting a predetermined pressure;
an automatic overflow control assembly in communication with said gas inlet, said automatic overflow control assembly including an automatic pipeline shut-off assembly and a release button assembly for deactuating said automatic pipeline shut-off assembly;
whereby when a pressure reducing failure takes place and the pressure in said pressure reducing valve chamber exceeds the predetermined pressure, said transmission plate is unable to actuate said switching valve so as to signal the occurence of a pressure reducing failure;
and whereby, when gas overflows, said automatic overflow control assembly will actuate said automatic pipeline shut-off assembly.

17 more elements

Facts

Application

07/005,933Filed 22 Jan 1987 · continuation in part

Priority

17 Feb 1986

Granted

29 Nov 1988

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

F16K 17/28
Acting directly on the cutting-off member: operating in one direction only
F16K 31/48
Mechanical actuating means: actuated by mechanical timing-device, e.g. with dash-pot
Y10T 137/7727
Responsive to change in rate of flow: excessive flow cut-off
Y10T 137/7782
With separate connected fluid reactor surface: with manual or external control for line valve

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

Life of this patent

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

Life of this patent

Abstract

Claims5