A leak detection structure for attachment to a fire hydrant includes an enclosure, the enclosure defining a cavity internal to the enclosure and a leak detection subassembly located in the cavity, the leak detection subassembly including at least one leak detection sensor and at least one circuit.
대표청구항▼
1. A leak detection sensor for attachment to a fire hydrant, the leak detection structure comprising: a housing that is fixed to the fire hydrant, the fire hydrant defining an internal surface that defines a hydrant cavity, the housing being in fluid communication with the hydrant cavity, the housin
1. A leak detection sensor for attachment to a fire hydrant, the leak detection structure comprising: a housing that is fixed to the fire hydrant, the fire hydrant defining an internal surface that defines a hydrant cavity, the housing being in fluid communication with the hydrant cavity, the housing having internal surfaces defining a housing cavity internal to the housing; anda leak detection subassembly, the leak detection subassembly including:at least one piezoelectric vibration sensor mounted with a fastener to an internal surface of the housing within the housing cavity, the at least one piezoelectric vibration sensor including a base and a piezoelectric layer deposited onto the base, the piezoelectric layer composed of piezoelectric crystals, the at least one piezoelectric vibration sensor arranged to receive a vibration from the housing via the fastener;at least one circuit arranged within the housing cavity and in electrical communication with the at least one piezoelectric sensor;an antenna in electrical communication with the at least one circuit;and wherein the housing is rigid. 2. The leak detection structure of claim 1, wherein the housing is a housing assembly including a primary housing and a mating housing connected to the primary housing. 3. The leak detection structure of claim 2, wherein the housing cavity is open on one side of the primary housing, and wherein the mating housing is connected to the primary housing on the open side of the housing cavity such that the mating housing substantially seals the interior of the primary housing from the exterior of the primary housing. 4. The leak detection structure of claim 1, wherein each at least one circuit is encased in potting and wherein each piezoelectric vibration sensor is not encased in potting. 5. The leak detection structure of claim 1, further comprising at least one battery. 6. The leak detection structure of claim 5, wherein the housing is a housing assembly including a primary housing and a mating housing connected to the primary housing, wherein the at least one battery is arranged in a mating cavity of the mating housing, and wherein the at least one battery is encased in potting. 7. The leak detection structure of claim 6, wherein the at least one battery is removably connected to the at least one circuit. 8. The leak detection structure of claim 1, wherein the antenna protrudes from the housing. 9. The leak detection structure of claim 8, wherein an antenna cable connects the antenna to the at least one circuit. 10. The leak detection structure of claim 8, wherein the housing defines an internal surface and an external surface, the internal surface and external surface defining a bore extending from the internal surface to the external surface, an intersection between the bore and the external surface defining a housing outlet; and the antenna protrudes out from the housing through the housing outlet. 11. The leak detection structure of claim 1, wherein the housing includes threading for attachment to the threading of the fire hydrant. 12. The leak detection structure of claim 1, wherein the at least one piezoelectric vibration sensor is coated with a sensor damping material that dampens frequencies outside of a desired frequency range within which leak detection is expected. 13. The leak detection structure of claim 1, wherein the at least one piezoelectric vibration sensor includes: a conduction layer deposited above the piezoelectric layer, the conduction layer composed of conductive material. 14. The leak detection structure of claim 1, wherein the base and the piezoelectric layer of the at least one piezoelectric vibration sensor are a first base and a first piezoelectric layer, wherein the at least one piezoelectric vibration sensor includes: a second base joined to the first base through an adhesive layer;a second piezoelectric layer deposited onto the second base opposite the adhesive layer, the second piezoelectric layer composed of piezoelectric crystals; anda conduction layer deposited above each piezoelectric layer, the conduction layer composed of conductive material. 15. A leak detection structure permanently attached to a fire hydrant, the leak detection structure comprising: a nozzle cap fixed to the fire hydrant, the nozzle cap having internal surfaces defining a cavity internal to the nozzle cap, the nozzle cap defining an internal surface and an external surface, the internal surface and the external surface defining a nozzle cap bore extending from the internal surface to the external surface, an intersection between the nozzle cap bore and the external surface defining a nozzle cap outlet;a housing secured to the nozzle cap within the cavity of the nozzle cap, the housing having internal surfaces defining a cavity internal to the housing,at least one piezoelectric vibration sensor mounted with a fastener to an internal surface of the housing, the at least one piezoelectric vibration sensor including a base and a piezoelectric layer deposited onto the base, the piezoelectric layer composed of piezoelectric crystals, the at least one piezoelectric vibration sensor arranged to receive a vibration from the nozzle cap via the fastener;at least one circuit arranged in the cavity and in electrical communication with the at least one piezoelectric vibration sensor; andan antenna in electrical communication with the at least one circuit, the antenna protruding out from the fire hydrant through the nozzle cap outlet. 16. The leak detection structure of claim 15, wherein at least one battery is removably connected to the at least one circuit. 17. A leak detection structure for attachment to a fire hydrant, the leak detection structure comprising: a housing assembly including a rigid primary housing and a rigid mating housing connected to the primary housing, the primary housing fixed to the fire hydrant, the primary housing defining a cavity that is open on one side of the primary housing, wherein the mating housing substantially seals the cavity;a leak detection subassembly, the leak detection subassembly including at least one piezoelectric vibration sensor mounted with a fastener to an internal surface of the housing within the cavity, the at least one piezoelectric vibration sensor including a base and a piezoelectric layer deposited onto the base, the piezoelectric layer composed of piezoelectric crystals, the at least one piezoelectric vibration sensor arranged to receive a vibration from the housing via the fastener,at least one circuit arranged within the cavity and in electrical communication with the at least one piezoelectric vibration sensor, andan antenna in electrical communication with the at least one circuit; andan antenna enclosure fixed to the fire hydrant, the antenna arranged within the antenna enclosure. 18. The leak detection structure of claim 17, wherein at least one battery is removably connected to the at least one circuit. 19. The leak detection structure of claim 17, wherein: the antenna enclosure defines an internal surface and an external surface, the internal surface and external surface defining a bore extending from the internal surface to the external surface, an intersection between the bore and the external surface defining an antenna enclosure outlet; andthe antenna protrudes out from the antenna enclosure through the antenna enclosure outlet.
Burns Alan A. ; Hayter Gary A. ; Griffin Stephanie A. ; Maresca ; Jr. Joseph W., Acoustic system for measuring the location and depth of underground pipe.
Bseisu Amjad A. (Dallas TX) Kingman John E. E. (Dallas TX) Cornette H. Mitchell (Plano TX), Acoustic vibration detection of fluid leakage from conduits.
Takahashi, Masashi; Sasaki, Keiichi; Yamaga, Nobuo; Ahiko, Norio; Yoshimura, Koichi; Ohi, Masanobu; Mochida, Yoshio; Machijima, Yuuichi; Shirai, Takehiro, Active sensor, multipoint active sensor, method for diagnosing deterioration of pipe, and apparatus for diagnosing deterioration of pipe, and apparatus for diagnosis deterioration of pipe.
Drinon David S. (Oakmont PA) Attaar Mustan (Monroeville PA) Junker Warren R. (Monroeville PA) Shannon Robert E. (Export PA), Apparatus and method for inspecting a control rod drive mechanism penetration tube for degradation.
Cantor Barry I. (Lynchburg VA) Flora John H. (Lynchburg VA) Latimer Paul J. (Lynchburg VA), Apparatus and method of discriminating flaw depths in the inspection of tubular products.
Bogle Tom G. (Houston TX) Tuma John E. (Houston TX) Williams Barry N. (Rosharan TX), Apparatus for confirming the presence of a leak in a liquid storage tank.
Camplin Kenneth R. ; Lang Dennis D. ; Kohlhorst Darrel P. ; Geier Daniel P. ; Novak Gary D. ; Fitzpatrick Sean M. ; McNeelege Glenn E. ; Cox Bradley E. ; Brewer Richard C. ; Artman Thomas A. ; Hooker, Coil volumetric and surface defect detection system.
Ziola, Steven M.; Gorman, Michael R.; Miller, William J., Device and method designed for ultrasonically inspecting cylinders for longitudinal and circumferential defects and to measure wall thickness.
Sternberg Walter (Alzenau DEX) Schmeisser Michael (Hanau DEX) Strauss Michael (Alzenau-Klberau DEX), Device for testing of oblong objects by means of ultrasonic waves.
Fleury, Jr., Leo W.; Dintakurti, Ganapathi Deva Varma; Richarz, Werner Guenther; Williams, James O.; Yusuf, Shabbir; Hiller, Timothy Scott Edward; Mercer, Steven James; Janhunen, Stefan Erik, Fire hydrant leak detector.
Owens, Steven E.; Rose, Joseph L.; Van Velsor, Jason K.; Zhang, Li; Avioli, Michael J., Guided wave pipeline inspection system with enhanced focusing capability.
Harthorn, Larry K.; Dioquino, Pedro A.; Milligan, Jr., Richard J.; Good, Jason C.; Allen, Neil D.; Romero, Richard D., Internal riser inspection device.
Lazar,Mark; Benson,Ronald D.; Metzger,Eric; Laughlin Parker,Kelly; Stauber,Joseph, Meter with integral register having no visual display of consumption.
Hansen, Thorkild; Oristaglio, Michael L., Method and apparatus for detecting leaks in buried pipes by using a selected combination of geophysical instruments.
Tuck Alan,GBX ; Brayson Gary,GBX ; Ignagni Mario B. ; Touchberry Alan B. ; Anderson Donald William,GBX ; Glen Stephen James,GBX ; Gilman James Michael Alexander,GBX, Method and apparatus for determining location of characteristics of a pipeline.
Roberts Ronald A. ; Rewerts Lance E. ; Clark Mary Amanda, Method and apparatus for determining source location of energy carried in the form of propagating waves through a conducting medium.
Stenstrom Theiss (Nordborg DKX) Molbaek Jens J. (Nordborg DKX) Hyldig Poul E. (Augustenborg DKX) Straede Bjarne (Sydals DKX) Nielsen Lars J. (Sonderborg DKX), Method and apparatus for monitoring a conduit system for an incompressible fluid for leaks.
Litzenberg, Holger; Floege, Heike; Scholz, Jochen; Dunhill, Anthony K., Method and apparatus for non-destructive testing of components of gas turbine engines made of monocrystalline materials.
Wei Han ; James R. Birchak ; Crispin L. Richards ; Vimal V. Shah ; Bruce H. Storm ; Rajnikant M. Amin, Method and apparatus for pulsed ultrasonic doppler measurement of wall deposition.
Kwun, Hegeon; Kim, Sang-Young; Crouch, Alfred E., Method and apparatus generating and detecting torsional waves for long range inspection of pipes and tubes.
Siddu,Dinesh Mysore; Dewangan,Sandeep Kumar; Katragadda,Gopichand; Ramaswamy,Sivaramanivas, Method and system for inspecting objects using ultrasound scan data.
Bazarov, Alexandr J.; Desyatchikov, Alexandr P.; Karasev, Nikolai A.; Kirichenko, Sergei P.; Slepov, Andrei M.; Smirnov, Anatoly V., Method for in-tube flaw detection.
Peterman Earl J. (Philo CA) Peterman David L. (Redwood Valley CA), Method for locating the joints and fracture points of underground jointed metallic pipes and cast-iron-gas-main-pipeline.
Smith Marina Quiocho ; Wang Wei ; Popelar Carl Harry ; Maple James Alan, Method for the prediction of rupture in corroded transmission pipes subjected to combined loads.
Motegi Ryohei (Tokyo JPX) Takeuchi Shinichi (Tokyo JPX) Sato Toshio (Tokyo JPX), Method of and apparatus for measuring flow velocity by using ultrasonic waves.
Bazarov, Alexandr Jurievich; Desyatchikov, Alexandr Petrovich; Karasev, Nikolai Alekseevich; Kirichenko, Sergei Pavlovich; Slepov, Andrei Mikhailovich; Smirnov, Anatoly Valentinovich, Method of in-tube ultrasonic flaw detection.
Richardson David L. (Los Gatos CA) Tung James C. S. (San Jose CA) Terhune James H. (San Jose CA) Deaver Gerald A. (San Jose CA), Method of ultrasonic inspection of materials through opaque barriers.
Maresca ; Jr. Joseph W. (Sunnyvale CA) Starr James W. (Bound Brook NJ) Wilson Christopher P. (La Honda CA), Methods for detection of leaks in pressurized pipeline systems.
Batzinger, Thomas James; Li, Wei; Gilmore, Robert Snee; Nieters, Edward James; Hatfield, William Thomas; Klaassen, Richard Eugene; Barshinger, James Norman; Haider, Bruno Hans; Chalek, Carl Lawrence;, Phased array ultrasonic inspection method for industrial applications.
Hunt Hugh E. M. (Trinity College Cambridge CB2 1TQ GB2) Kpke Uwe G. (Emmanuel College Cambridge CB2 3AP GB2), Pipeline pig and method of pipeline inspection.
Maresca ; Jr. Joseph W. (Sunnyvale CA) Starr James W. (Bound Brook NJ) Wilson Christopher P. (La Honda CA), Positive displacement pump apparatus and methods for detection of leaks in pressurized pipeline systems.
Clark ; Jr. William G. (Murrysville Boro PA) Junker Warren R. (Monroeville PA) Begley James A. (Pittsburgh PA) Jacko Richard J. (Forest Hills PA) Byers William A. (Penn Hills Township ; Allegheny Cou, Remotely operated diagnostic tube sampling device and method of sampling.
Kalayeh, Hooshmand M.; Paz-Pujalt, Gustavo R.; Spoonhower, John P., System and method for remote quantitative detection of fluid leaks from a natural gas or oil pipeline.
Scrantz Leonard (P.O. Box 1145 Breaux Bridge LA 70517), System, method and apparatus for the ultrasonic inspection of liquid filled tubulars and vessels.
Maresca ; Jr. Joseph W. (Sunnyvale CA) Wilson Christopher P. (La Honda CA) Starr James W. (Bound Brook NJ), Temperature compensated methods for detection of leaks in pressurized pipeline systems.
Maresca ; Jr. Joseph W. (Sunnyvale CA) Starr James W. (Bound Brook NJ) Wilson Christopher P. (La Honda CA), Temperature compensated methods for detection of leaks in pressurized pipeline systems using gas controlled apparatus.
Maresca ; Jr. Joseph W. (Sunnyvale CA) Starr James W. (Bound Brook NJ) Wilson Christopher P. (La Honda CA), Temperature compensated methods for detection of leaks in pressurized pipeline systems using piston displacement apparat.
Smith, Brandon L.; Hatley, Richard; Hatley, Kenneth, Ultrasonic inspection crawler and method for inspecting welds of jet pumps in a nuclear reactor vessel.
Ales,Richard A.; Glime,William H.; Hull,John Barry; Rubinski,Jeffrey M.; Seymour,Michael Douglas; Williams,Peter C.; Yang,Wenxian, Ultrasonic testing of fitting assembly for fluid conduits with a hand-held apparatus.
John ; Jr. Clarence D. (Penn Hills Twp. ; Allegheny County PA) Wengewicz Richard S. (Murrysville PA), Ultrasonic tube inspection station for a rapid changeover multi-diameter tube inspection system.
Cohen Jeffrey D. (212 Marian Ct. Hockessin DE 19707), Water flow monitoring system for determining the presence of leaks and stopping flow in plumbing pipes.
Wendel A. Christopher (7169 154th Rd. North Palm Beach Gardens FL 33418) Freitag Steven E. (1598 Glendale Ave. NW. Palm Bay FL 32907), Wireless system for detecting and stopping water leaks.
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