Runaway valve system for a pump
AssigneeCarlisle Fluid Technologies, Inc.
InventorChristopher Lee Strong
Life of this patent
Estimating the term…
Abstract
A system includes a pump. The pump includes a piston configured to axially reciprocate within a body. The axial movement of the piston activates a first chamber valve and a second chamber valve. The system also includes a main valve configured to direct a flow to the pump to facilitate the axial movement which then transfers a fluid from a reservoir to a spray applicator. The system includes a runaway valve system fluidly coupled to the main valve and configured to detect a runaway state of the pump. The runaway valve system is configured to direct the main valve to stop operation of the pump in response to detection of the runaway state.
Claims18
A pumping system, comprising:
- a pump comprising a fluid section coupled to a motor section having a piston, wherein the piston is configured to axially reciprocate within a body, wherein an axial movement of the piston activates a first chamber valve at a first position and a second chamber valve at a second position, and the first and second position are axially offset from one another along a path of the axial movement of the piston;
- a main valve configured to direct a flow to the motor section of the pump to facilitate the axial movement of the piston such that the fluid section transfers a fluid from a reservoir to a spray applicator;
- and
- a runaway valve system fluidly coupled to the main valve and configured to detect a runaway state of the pump, wherein the runaway valve system comprises a signal valve configured to receive a first chamber signal from the first chamber valve and to receive a second chamber signal from the second chamber valve, and wherein the runaway valve system is configured to direct the main valve to control the flow to the motor section to hold a position of the piston to stop operation of the pump in response to detection of the runaway state.
A runaway valve system, comprising:
- a housing;
- a signal valve positioned within the housing, wherein the signal valve is configured to receive a first signal from a pump comprising a piston, wherein the first signal is indicative of a first piston position of the piston of the pump, and wherein the signal valve is configured to receive a second signal from the pump indicative of a second piston position of the piston of the pump;
- and
- a control valve configured to receive a third signal from the signal valve indicative of a runaway state, and to output a fourth signal to a main air valve while the control valve is in a runaway state.
A pumping system, comprising:
- a pneumatic pump configured to pump a fluid from a reservoir to a spray applicator;
- an air supply configured to output a first volume of air;
- a main valve configured to receive the first volume of air from the air supply and to distribute the first volume of air to the pneumatic pump to enable axial reciprocation within a body to control operation of the pneumatic pump;
- and
- a runaway valve system configured to receive a first signal from the pneumatic pump indicative of a first axial position of the pneumatic pump and a second signal from the pneumatic pump indicative of a second axial position of the pneumatic pump, wherein the runaway valve system comprises a signal valve configured to receive the first signal from a first chamber valve and to receive the second signal from a second chamber valve, and wherein the runaway valve system determines if the pneumatic pump is operating in a runaway state, and stops operation of the pneumatic pump if the pneumatic pump is operating in the runaway state.
Dependencies are inferred from the claim text.