[특허]Pressurized piping line leak detector

Pressurized piping line leak detector 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01M-003/26
출원번호	US-0051232 (1993-04-23)
발명자 / 주소	Filippi Ernest A. (P.O. Box 1809 Porterville CA 93258) Miller Kenneth L. (1819 Bardale Ave. San Pedro CA 90731)
인용정보	피인용 횟수 : 39 인용 특허 : 0

초록 ▼

A line leak detector system that requires no existing piping modifiction for installation. The system consists of a controller and transducer and installs at existing fuel dispensers. The two components are connected by a length of electrical cable. The invention detects leaks in underground pressurized piping systems for fuel products and other incompressible liquids. The system performs three levels of leak detection, broken pipe, 3 gph and 0.2 gph. Existing piping system variables relating to bulk modulus, variable pump off pressure and thermal differential between fuel and piping with surrounding soil influence, are compensated for. The status of the leak test is reported by encoded lights and horn. In various combination of flash, blink and steady state lights, plus chirp or audible horn. The transducer and cable are intrinsic safe, permitting installation in hazardous environments. The system permits selection of functional modes, thereby making the system able to report leak status to existing underground fuel tank inventory systems.

대표청구항 ▼

A pressure decay leak detection circuit for a piping system comprising: pressure measurement means for measuring a fluid pressure in the piping system and providing an electrical signal representing the measured pressure; window setting means for variably defining a pressure window value representing an allowable loss in line pressure during a pressure decay leak detection test performed by the circuit; test time setting means for variably specifying a defined testing period prior to initiation of a test; pump monitoring means for monitoring the activation of a pump pressurizing fluid in the piping system; indication means for indicating leak detection test results to piping system operating personnel; and window testing control means, connected to said pressure measurement means, said window setting means, said pump monitoring means, and said indication means, for monitoring fluid pressure in the piping system, and upon detecting a predetermined reduction of fluid pressure in the piping system: recording a catch pressure measured by said pressure measurement means, monitoring pressure decay in said piping system using said pressure measurement means during a defined testing period; and activating said indication means to indicate a test failure if pressure in said piping system decays below a value based on said pressure window value before the expiration of said defined testing period.

이 특허를 인용한 특허 (39)

Wolk,James, Accessible test fitting for a plumbing system.
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Cook, John E.; Perry, Paul D., Automotive evaporative leak detection system.
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Myers William J., Computerized dispenser tester.
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Paul D. Perry CA; John A. Gurd CA, Connection between an integrated pressure management apparatus and a vapor collection canister.
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Kumar, Tarun; Zhang, Rui, Detecting small leaks in pipeline network.
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Weldon, Craig, Diagnostic apparatus and method for an evaporative control system including an integrated pressure management apparatus.
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Perry, Paul; Veinotte, Andre, Electrical connections for an integrated pressure management apparatus.
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Thomas,Matthew E., Fluid containment element leak detection apparatus and method.
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Paul D. Perry CA, Fluid flow through an integrated pressure management apparatus.
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Perry, Paul D., Fluid flow through an integrated pressure management apparatus.
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Chaudhary, Harsh; Kim, Younghun; Kumar, Tarun; Raman, Abhishek; Zhang, Rui, Forecasting leaks in pipeline network.
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Perry,Paul D.; Cook,John E., Fuel system with integrated pressure management.
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Paul D. Perry CA; John E. Cook CA, Fuel system with intergrated pressure management.
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Perry, Paul D., Housing for an integrated pressure management apparatus.
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Paul D. Perry CA, Housing for integrated pressure management apparatus.
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Perry, Paul D., Integrated pressure management apparatus having electronic control circuit.
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Paul D. Perry CA, Integrated pressure management apparatus providing an on-board diagnostic.
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Paul D. Perry CA; John E. Cook CA, Integrated pressure management system for a fuel system.
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Perry, Paul D.; Cook, John E., Integrated pressure management system for a fuel system.
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Perry,Paul D.; Cook,John E., Integrated pressure management system for a fuel system.
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Meyer Martin A. ; Meyer Mickey A., Isolation and positive shut-off system for a fuel dispensing facility.
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Seitter Larry E. (Olathe KS) Bradshaw Jerry W. (Olathe KS), Leak detection method and system for product lines in fuel dispensing systems.
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Drakulich Dushan ; Cueva-Eguiguren M., Leak detection system.
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Lukas Paul ; Gagnon Daniel F. ; Johnson Daniel ; Farrar Christopher D. ; Knight John D. ; Gillis John J., Line leak detection.
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Jarvie, Ian F., Line leak detector and method of using same.
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Jarvie, Ian F., Line leak detector and method of using same.
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Filippi Ernest A. ; Miller Kenneth L., Method and apparatus for calibrating a leak detector.
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Paul D. Perry CA; John E. Cook CA, Method of calibrating an integrated pressure management apparatus.
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Perry,Paul D.; Cook,John E., Method of managing pressure in a fuel system.
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Susfalk, Richard; Brock, James, Monitoring probes and methods of use.
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Perry,Paul; Veinotte,Andre, Poppet for an integrated pressure management apparatus and fuel system and method of minimizing resonance.
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Paul D. Perry CA, Pressure operable device for an integrated pressure management apparatus.
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Perry, Paul D., Sensor arrangement for an integrated pressure management apparatus.
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Weldon, Craig, Sensor arrangement for an integrated pressure management apparatus.
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Paul D. Perry CA, Solenoid for an integrated pressure management apparatus.
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Yang Young-soo,KRX ; Cha Kap-hyun,KRX, System for checking gas pressure and gas leakage.
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Cook, John E.; Perry, Paul D., Temperature correction method and subsystem for automotive evaporative leak detection systems.
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Cook,John E.; Perry,Paul D., Temperature correction method and subsystem for automotive evaporative leak detection systems.
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Cook,John E.; Perry,Paul D., Temperature correction method and subsystem for automotive evaporative leak detection systems.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Pressurized piping line leak detector 원문보기

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Pressurized piping line leak detector 원문보기

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이 특허를 인용한 특허 (39)

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