Near-field wireless powered solenoid valve
First Claim
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1. A method of controlling a process flow in a hazardous environment, comprising:
- plumbing a process control valve assembly within the hazardous environment, the hazardous environment being physically isolated from a non-hazardous environment by a vapor tight barrier such that no fluid or gas flowing through the process control valve assembly crosses through the barrier, the process control valve assembly including a solenoid operated valve, a solenoid coil, and one or more sensors;
providing power inductively to the process control valve assembly from the non-hazardous environment;
receiving data signals inductively from the one or more sensors of the process control valve assembly in the non-hazardous environment, the data signals containing information pertaining to an operation of the process control valve assembly; and
using a controller in the non-hazardous environment to control operation of the solenoid operated valve inductively in response to the data signals inductively received from the one or more sensors.
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Abstract
A solenoid valve assembly including a process control valve plumbed within a hazardous environment; a solenoid coil mated to the valve and configured to operate the valve, the solenoid coil located within the hazardous environment; a valve coil configured to receive power and transfer that power to the solenoid coil, thereby operating the valve, the valve coil located within the hazardous environment; and a controller coil configured to transmit power to the valve coil, the controller coil located in the hazardous environment.
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Citations
18 Claims
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1. A method of controlling a process flow in a hazardous environment, comprising:
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plumbing a process control valve assembly within the hazardous environment, the hazardous environment being physically isolated from a non-hazardous environment by a vapor tight barrier such that no fluid or gas flowing through the process control valve assembly crosses through the barrier, the process control valve assembly including a solenoid operated valve, a solenoid coil, and one or more sensors; providing power inductively to the process control valve assembly from the non-hazardous environment; receiving data signals inductively from the one or more sensors of the process control valve assembly in the non-hazardous environment, the data signals containing information pertaining to an operation of the process control valve assembly; and using a controller in the non-hazardous environment to control operation of the solenoid operated valve inductively in response to the data signals inductively received from the one or more sensors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 18)
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10. A process control valve assembly comprising:
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a process control valve plumbed within a controlled environment; one or more sensors located within the controlled environment and configured to receive sensor inputs pertaining to operation of the process control valve; a solenoid coil mated to the process control valve and configured to operate the process control valve, the solenoid coil located within the controlled environment; a valve coil configured to receive power and transfer that power to the solenoid coil, thereby operating the process control valve, the valve coil located within the controlled environment; a controller located in a second environment physically isolated and fluidly separated from the controlled environment and configured to control operation of the process control valve inductively; and a controller coil configured to transmit power inductively to the valve coil, the controller coil being wired to the controller located in the second environment outside of the controlled environment; wherein the valve coil is further configured to receive at least one data signal representing the input sensor inputs from the one or more sensors and to transfer the data signals inductively to the controller coil. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification