|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||F16L-055/168 G01W-001/11 F16K-041/04|
|미국특허분류(USC)||73/46 ; ; 73/405 ; R ; ; 73/33505 ; 324/691|
|발명자 / 주소|
|인용정보||피인용 횟수 : 20 인용 특허 : 16|
A valve stem gas leak sensor or detector configured to surround a possibly leaking petrochemical or like flow line valve stem and provide for external monitoring equipment an electrical resistance related to the amount of hydrocarbon gas leakage occurring around the valve stem. Such a gas leak detector, termable a ring sensor, is configured as a stem surrounding enclosure, with interconnecting segments for ease of installation around and removability from a valve stem, with one or both of each such segments having an interiorly arranged layer of gas sens...
A valve stem gas leak sensor comprising a generally cylindrical enclosure closely surrounding the valve stem of a possibly leaking petroleum flow line valve, said cylindrical enclosure being situated adjacent the valve packing gland and being interiorly open around said valve stem, a hydrocarbon gas sensing material layer on the interior surface of said enclosure, and electrical conductor means electrically connected to said hydrocarbon gas sensing material with portions of said conductor means exposed exteriorly of said enclosure so as to be contactable...