US 2014/0174551 A1 · Variable Gas Pressure Regulator

Abstract

A variable gas pressure regulator comprises a throttling valve regulating the fluid flow between a high-pressure fluid inlet and a regulated space fluidly connected to a fluid outlet, a high-pressure solenoid commanded to control fluid flow between the fluid inlet and a control space and a low-pressure solenoid commanded to control fluid flow between the control space and the regulated space. The regulator achieves a variable pressure at the regulator outlet by commanding the two solenoids to control the pressure in the control space relative to the regulated space. The regulator further comprises a lock-off valve which is controlled by the action of the low-pressure solenoid and of the high-pressure solenoid based on the relative pressure difference between the control space and the regulated space. The lock-off valve seals the passage between the fluid inlet and the regulated space.

Claims13

Dependent claims

A variable gas pressure regulator comprising:

(a) a body provided with an inlet and an outlet;
(b) a control space and a regulated space, said regulated space being fluidly connected to said outlet and being separated from said control space by a diaphragm;
(c) a throttling valve operable to regulate fluid flow between said inlet and said outlet;
(d) a control member associated with said diaphragm to move in response to movements of said diaphragm, said control member being movable to operate said throttling valve;
and
(e) a lock-off valve associated with said control member and located in a fluid flow path between said throttling valve and said regulated space, wherein said lock-off valve stops flow of fluid from said inlet to said regulated space when said throttling valve is closed.

3 more elements

Dependencies are inferred from the claim text.

Variable Gas Pressure Regulator

Life of this patent

Variable Gas Pressure Regulator

Life of this patent

Abstract

Claims13