[특허]Methods for measuring flow rates to detect leaks

Methods for measuring flow rates to detect leaks 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01M-003/26
출원번호	US-0097457 (1993-07-26)
발명자 / 주소	Maresca Jr. Joseph W. (Sunnyvale CA) Starr James W. (Bound Brook NJ) Wilson Christopher (La Honda CA)
출원인 / 주소	Vista Research, Inc. (Mountain View CA 02)
인용정보	피인용 횟수 : 48 인용 특허 : 0

초록 ▼

A method for measuring thermally corrected leak rates in a pressurized pipeline system. The pipeline system is pressurized to at least two different pressures, and changes of volume of product required to maintain approximately constant pressure are measurized at each pressure. A temperature-compens

대표청구항 ▼

A method for measuring the difference in volumetric flow rates between different pressures, the flow rates being produced by a leak, after compensation has been made for thermally induced changes in the volume of the liquid product in a pressurized pipeline system, comprising: (a) pressurizing said pipeline system to a first pressure level, and measuring those changes in the volume of product in said pipeline system that are required to maintain approximately constant pressure over a first measurement period; (b) pressurizing said pipeline system to a second pressure level and measuring those changes in the volume of product in said pipeline system that are required to maintain approximately constant pressure over a second measurement period approximately equal in duration to the first measurement period; (c) pressurizing said pipeline system to a third pressure level where at least two of the first, second, and third pressure levels are different, and after a period approximately equal in duration to the time between the first and second measurement periods, measuring those changes in the volume of product in said pipeline system that are required to maintain approximately constant pressure over a third measurement period approximately equal in duration to the first measurement period; and (d) computing the temperature-compensated volume rate between the pressure of the second measurement period and the average pressure during the first and third measurement periods by subtracting the rate of change of volume during the second measurement period from the average rate of change of volume during the first and third measurement periods.

이 특허를 인용한 특허 (48)

Schoeffel Eberhard,DEX ; Kropf Klaus,DEX ; Ernst Josef,DEX ; Seidel Josef,DEX, Apparatus for measuring hydraulic flow quantities and leaks in a specimen.
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Fierro Michael R. ; Maresca ; Jr. Joseph W. ; Starr James W., Apparatus for measuring the flow rate due to a leak in a pressurized pipe system.
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Cook, John E.; Perry, Paul D., Automotive evaporative leak detection system.
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Koike, Atsushi; Nakamura, Toshimi; Makino, Tsutomu, Device for detecting leakage of liquid in tank.
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Koike, Atsushi; Yamagishi, Kiyoshi; Takahata, Takayuki; Nakamura, Toshimi; Kawanishi, Toshiaki, Device for detecting leakage of liquid in tank.
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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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Chiang Hank,TWX, Freezing tank.
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Perry,Paul D.; Cook,John E., Fuel system with integrated pressure management.
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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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Yanagi,Kiyotaka; Koike,Atsushi; Nakamura,Toshimi; Yamagishi,Kiyoshi; Sekimori,Hideshi, Leak detector of liquid in tank.
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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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Rogers, Warren F.; Collins, John R.; Jones, Jillanne B.; Jones, William P., Meter calibration accuracy.
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Simmons, Walt, Method and apparatus for detecting a leak in a fuel delivery system.
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Wolford, Jimmy; Wolford, Jr., Bernie; Lockerd, Clark; Slaughter, Ricky, Method and apparatus for leak detection in horizontal cylindrical storage tanks.
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Mellone, Joseph A.; Boucher, Randall S., Method and apparatus for monitoring for a restriction in a stage II fuel vapor recovery system.
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Mellone, Joseph A.; Boucher, Randall S., Method and apparatus for monitoring for a restriction in a stage II fuel vapor recovery system.
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Mellone, Joseph; Boucher, Randall, Method and apparatus for monitoring for a restriction in a stage II fuel vapor recovery system.
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Mellone, Joseph A.; Boucher, Randall S., Method and apparatus for monitoring for leaks in a stage II fuel vapor recovery system.
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Rogers, Warren F.; Collins, John R.; Jones, Jillanne B., Method and apparatus for monitoring operational performance of fluid storage systems.
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Rogers, Warren F.; Collins, John R.; Jones, Jillanne B., Method and apparatus for monitoring operational performance of fluid storage systems.
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Rogers, Warren F.; Collins, John R.; Jones, Jillanne B., Method and apparatus for monitoring operational performance of fluid storage systems.
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Warren F. Rogers ; John R. Collins ; Jillanne B. Jones, Method and apparatus for monitoring operational performance of fluid storage systems.
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Wolford, Jimmy; Wolford, Bernie; Lockerd, Clark; Slaughter, Ricky, Method and apparatus for storage tank leak detection.
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Esser, Olle, Method and device for determining the existence of leaks in a system with flowing fluid.
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Reichler,Donald S.; Baglioni,Adriano; Zalenski,Thomas C.; Hart,Robert P.; Lucas,Richard K., Method and system for determining and monitoring dispensing point flow rates and pump flow capacities using dispensing events and tank level data.
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Reichler, Donald S.; Baglioni, Adriano; Zalenski, Thomas C.; Hart, Robert P.; Lucas, Richard K., Method and system for determining and monitoring the dispensing efficiency of a fuel dispensing point in a service station environment.
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Stewart, Jack D.; Hanusey, Jr., Joseph E., Method for testing parts for leaks.
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Paul D. Perry CA; John E. Cook CA, Method of calibrating an integrated pressure management apparatus.
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Bridges, Robert, Method of testing the pressure integrity of a tank.
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Fierro, Michael R.; Maresca, Jr., Joseph W., Methods for detecting leaks in pressurized piping with a pressure measurement system.
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Fierro Michael R. ; Maresca ; Jr. Joseph W. ; Starr James W., Methods for measuring the flow rate due to a leak in a pressurized pipe system.
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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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Franklin, Charles M.; Cully, Richard A., System and method for a benchmark pressure test.
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Franklin, Charles M.; Cully, Richard A., System and method for a pressure test.
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Wolford, Jimmy; Wolford, Bernie; Lockerd, Clark; Slaughter, Ricky, System and method for detecting and quantifying changes in the mass content of liquid storage containers.
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Franklin, Charles M., System and method for detecting leaks.
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Franklin, Charles M., System and method for detecting leaks.
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Franklin, Charles M., System and method for detecting leaks.
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Franklin, Charles M.; Cully, Richard A., System and method for determining leaks in a complex system.
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Franklin, Charles Mark; Cully, Richard A., System and method for identifying a leak.
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Rutherford, James M.; Ekblad, Mark K., System and method for leak rate testing during adiabatic cooling.
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Hastings Calvin R. ; Augenstein Donald R. ; Estrada Herbert, Temperature compensation for automated leak detection.
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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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Methods for measuring flow rates to detect leaks 원문보기

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Methods for measuring flow rates to detect leaks 원문보기

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