A valve assembly including an actuated valve and a sensor module is disclosed. The actuated valve includes a body defining a chamber, a first fluid port coupled to the chamber, and a second fluid port coupled to the chamber. The actuated valve further includes a movable stem disposed at least partia
A valve assembly including an actuated valve and a sensor module is disclosed. The actuated valve includes a body defining a chamber, a first fluid port coupled to the chamber, and a second fluid port coupled to the chamber. The actuated valve further includes a movable stem disposed at least partially within the chamber, the movable stem having a closed position and an open position relative to the chamber, and an actuator coupled to the stem. The sensor module is attached to the actuated valve, and the sensor module includes a microcontroller, and at least one sensor coupled to the microcontroller, the at least one sensor providing a signal associated with a status of the actuated valve.
대표청구항▼
1. A valve assembly, comprising: a pneumatically actuated valve, including: a body defining a chamber, a first fluid port coupled to the chamber, and a second fluid port coupled to the chamber;a pneumatic actuator configured to operate the pneumatically actuated valve to be in an open position and t
1. A valve assembly, comprising: a pneumatically actuated valve, including: a body defining a chamber, a first fluid port coupled to the chamber, and a second fluid port coupled to the chamber;a pneumatic actuator configured to operate the pneumatically actuated valve to be in an open position and to be in a closed portion relative to the chamber, the closed position preventing CO2 working fluid flow between the first fluid port and the second fluid port, and the open position allowing the CO2 working fluid flow between the first fluid port and the second fluid port;a bonnet interposed between the body and the pneumatic actuator, the bonnet including a leak test port; anda sensor module attached to the pneumatic actuator, the sensor module including: a microcontroller, andat least one sensor coupled to the microcontroller, the at least one sensor configured to provide a signal associated with a status of the pneumatically actuated valve based on a detected temperature of the CO2 working fluid wherein the at least one sensor is located proximate to the leak test port and outside the bonnet,wherein the microcontroller is configured to detect a leak of the CO2 working fluid into the pneumatic actuator of the pneumatically actuated valve based on a change of the temperature of the CO2 working fluid detected by the least one sensor. 2. The valve assembly of claim 1, wherein the at least one sensor comprises a plurality of sensors that include a temperature sensor, a pressure sensor, and at least one of a chemical sensor, an optical sensor, and an acoustic sensor. 3. The valve assembly of claim 1, wherein the pneumatically actuated valve further comprises a metal tube installed over a leak test port, and the at least one sensor is a thermistor disposed within the metal tube at a location proximate to the leak test port. 4. The valve assembly of claim 1, wherein the sensor module includes at least one light emitting diode (LED). 5. The valve assembly of claim 4, wherein the at least one LED includes a green LED and a red LED. 6. The valve assembly of claim 1, wherein the sensor module is coupled to a network. 7. The valve assembly of claim 1, wherein the sensor module includes a battery. 8. The valve assembly of claim 1, wherein the microcontroller is further configured to: acquire a temperature of the CO2 working fluid detected by the at least one sensor;determine a valve status based on the temperature of the CO2 working fluid detected by the at least one sensor; andindicate the valve status based on the determination of the valve status, wherein the pneumatically actuated valve controls a flow of the CO2 working fluid. 9. The valve assembly of claim 8, wherein the microcontroller is further configured to: sample an analog sensor data signal; andcreate digital sensor data from the analog sensor data signal. 10. The valve assembly of claim 9, wherein the microcontroller is further configured to: compare the digital sensor data to a predetermined value; andset a valve status indicator to acceptable or unacceptable based on the comparison. 11. The valve assembly of claim 9, wherein the microcontroller is further configured to: determine a change in the digital sensor data over a predetermined time period;compare the change in the digital sensor data to a predetermined value; andset the valve status indicator to unacceptable if the change in the digital sensor data is greater than the predetermined value. 12. The valve assembly of claim 11, wherein the actuated valve further comprises a leak test port arranged in a valve bonnet, wherein the at east one sensor is a thermistor disposed at a location proximate to the leak test port, wherein the predetermined time period is between about 10 seconds and about 5 minutes, and wherein the predetermined value is between about 60° C. and about 100° C. 13. The valve assembly of claim 12, wherein the predetermined time period is about 1 minute and the predetermined value is about 80° C. 14. The valve assembly of claim 8, wherein the sensor module includes a red LED, and wherein the microcontroller is further configured to flash the red LED three times if the valve status is unacceptable. 15. The valve assembly of claim 8, wherein the sensor module includes an audio speaker, and wherein the microcontroller is further configured to emit an audible alarm from the audio speaker if the valve status is unacceptable. 16. The valve assembly of claim 8, wherein the sensor module is coupled to a network, and wherein the microcontroller is further configured to send a message to a remote computer over the network if the valve status is unacceptable. 17. The valve assembly of claim 8, wherein the microcontroller is further configured to: determine a supply voltage status; andindicate the supply voltage status. 18. The valve assembly of claim 17, wherein the microcontroller is further configured to: measure a supply voltage level;compare the measured supply voltage level with a voltage threshold; anddetermine whether the supply voltage status is acceptable or unacceptable based on the comparison. 19. The valve assembly of claim 18, wherein the sensor module includes a green light emitting diode (LED) and a red LED, and wherein the microcontroller is further configured to: flash the green LED once in response to determining that the supply voltage status is acceptable; andflash the green LED and the red LED once in response to determining that the supply voltage status is unacceptable. 20. An ultra-clean system operating in a hazardous environment comprising the valve assembly of claim 1.
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이 특허에 인용된 특허 (11)
Hoffmann Heinfried,DEX ; Kemmler Lothar,DEX ; Kiesbauer Joerg,DEX, Control apparatus.
Story Carl E. (Cupertino CA) Nichols Jerry A. (San Jose CA) Cady Byron C. (Gilroy CA), Fluid control valve and system with leak detection and containment.
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