A device for indicating the status of a valve includes a position indicator, wherein the position indicator includes a monitoring element, and a communication element. A method for indicating the status of at least one valve includes monitoring positions of a device enclosed by a first valve with a
A device for indicating the status of a valve includes a position indicator, wherein the position indicator includes a monitoring element, and a communication element. A method for indicating the status of at least one valve includes monitoring positions of a device enclosed by a first valve with a position indicator and communicating the positions of the device enclosed by the first valve with a communications element.
대표청구항▼
1. A device for indicating a status of a valve comprising: a position indicator, wherein the position indicator comprises: a ring gear, the ring gear mechanically coupled to a valve stem of the valve, the valve stem defining a first end and a second end, the first end disposed opposite from the seco
1. A device for indicating a status of a valve comprising: a position indicator, wherein the position indicator comprises: a ring gear, the ring gear mechanically coupled to a valve stem of the valve, the valve stem defining a first end and a second end, the first end disposed opposite from the second end, the first end engaging a gate comprised by the valve, the ring gear mechanically engaging the valve stem between the first end and the second end, the ring gear disposed within a gear enclosure, the valve stem extending through a bore defined by the gear enclosure, the gear enclosure positioned between the first end and the second end, the valve stem including threads having a pitch;a monitoring element, the monitoring element configured to calculate movement of the gate based upon the pitch of the threads; anda communication element. 2. The device of claim 1, further comprising an o-ring mounted on the valve stem and positioned between the ring gear and the valve stem. 3. The device of claim 1, wherein the position indicator further includes: a potentiometer, the potentiometer including a rotatable potentiometer shaft; anda potentiometer gear fixedly connected to the potentiometer shaft, the potentiometer gear mechanically coupled to the ring gear. 4. The device of claim 3, further comprising an intermediate gear, the intermediate gear engaging both the ring gear and the potentiometer gear. 5. The device of claim 1, wherein the position indicator includes a potentiometer mechanically correlated to the valve. 6. The device of claim 1, wherein the position indicator is mountable between a stuffing box of the valve and an op nut of the valve. 7. The device of claim 1, wherein the communication element includes a communication device. 8. The device of claim 7, wherein the communication device includes a visual readout. 9. The device of claim 7, wherein the communication device is connected to the position indicator by a wire conductor. 10. The device of claim 7, wherein the communication device includes an antenna. 11. The device of claim 1, wherein the valve stem is defined by an elongated rod. 12. A method for indicating a status of at least one valve comprising: mechanically coupling a ring gear to a valve stem of a first valve;mechanically coupling a potentiometer gear to the ring gear,mechanically coupling the potentiometer gear to a rotatable potentiometer shaft of a potentiometer;monitoring positions of a device enclosed by the first valve with a position indicator, wherein monitoring positions of the device comprises: calculating a rotation of the valve stem based on a gear ratio of the potentiometer gear and the ring gear; andcalculating movement of the device enclosed by the first valve from the rotation of the valve stem; andcommunicating the positions of the device enclosed by the first valve with a communications element;wherein the valve stem includes threads having a pitch, and wherein calculating movement of the device includes basing a calculation upon the pitch. 13. The method of claim 12, further comprising: monitoring positions of a second device enclosed by a second valve with a second position indicator; andcommunicating the positions of the second device enclosed by the second valve with the communications element. 14. The method of claim 12, further comprising communicating the positions of the device enclosed by the first valve with a remotely located communicator. 15. The method of claim 12, wherein: the valve stem defines a first end and a second end;the first end is disposed opposite from the second end;the first end engages the device;the second end extends through a bonnet comprised by the first valve; andthe ring gear mechanically engages the valve stem between the first end and the second end. 16. The method of claim 12, further comprising: mechanically coupling the ring gear with an intermediate gear; andmechanically coupling the potentiometer gear with the intermediate gear. 17. The method of claim 12, wherein the valve stem is defined by an elongated rod.
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