[특허]Remote function verification of low pressure and vacuum relief devices

[미국특허] Remote function verification of low pressure and vacuum relief devices 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16K-017/26 G01B-007/14
출원번호	US-0148552 (1998-09-04)
발명자 / 주소	Kelada Maher I.
대리인 / 주소	Egan
인용정보	피인용 횟수 : 8 인용 특허 : 27

초록 ▼

A method and system for automatically verifying the function of pressure and vacuum relief valves for low-pressure storage vessels and tanks, which can be remotely operator actuated to insure venting when emergencies occur, allows for on-line verification of the relief valve functionality and proper operation. The system periodically checks the set pressure of the valve by attempting to lift its pallet and measures the deviation from a set point. It also indicates unplanned occurrence of valve lifting, as a result of unforeseen upset in storage vessel pressure. This apparatus is electrically operated and controlled and relies on electromagnetic means for tractive or pull-force, as well as for detecting valve lifting.

대표청구항 ▼

[ I claim:] [1.] An improved relief valve for relieving pressure differentials in storage vessels having an internal pressure 15 psig or less, which valve provides verification of its functional readiness for opening, each said relief valve comprising:housing means defining a chamber with an input, an output, and a valve seat within said chamber;pallet assembly means mounted within said chamber for movement with respect to said valve seat to effect the opening and closing thereof; andmeans biasing said pallet assembly means to a normally closed position;first magnetically inductive circuit means acting upon said pallet assembly means to periodically test the operational condition of said valve by opening it; andsecond magnetically inductive circuit means responsive to movement of said pallet assembly to thereby verify proper operation and opening of said valve.

이 특허에 인용된 특허 (27) 인용/피인용 타임라인 분석

Fain John E. (Pineville LA), Accessory for detecting leaking of safety valves.
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Poulin Philippe (St. Symphorien d\Ozon FRX), Apparatus for measuring the mechanical motion of a magnet valve armature for controlling fuel injection in a fuel inject.
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Trevisan Ottavio (Mestre ITX), Apparatus for periodically testing the operation of safety valves.
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Caron Richard W. (Canton MI), Calibration technique for production mass air flow sensor flow stands.
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Wolfges, Hans, Electrically controlled pressure relief valve including a hydraulic bias.
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Toyoda Akira (Tokyo JPX) Chiba Yasutsune (Tokyo JPX), Electromagnetic pump.
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Lin Charlotte Y. (Corona CA), Electromagnetic valve with actuation-indicating means.
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Eggerton Don W. (Pineville LA) Scallan David J. (Bentley LA), Fluid valve with actuation sensor.
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Eheim Franz (Stuttgart DEX) Bhringer Wilfried (Flein DEX), Fuel injection apparatus for internal combustion engines.
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Thompson Leonard J. (Wrentham MA), Function assist control for pressure relief valve.
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Tirelli Paolo (Cinisello Balsamo (Milan) IT), Hydraulic valves directly controlled by either director alternating current.
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Munch, Carl A.; Cooper, Stephen R. W.; Rymut, Michael J., Inductive coupling position sensor method and apparatus having primary and secondary windings parallel to each other.
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Munch Carl A. (Southfield MI) Cooper Stephen R. W. (Tustin MI) Rymut Michael J. (Cadillac MI), Linear position sensor having coaxial or parallel primary and secondary windings.
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Moyers John C. (Oak Ridge TN) Haynes Howard D. (Knoxville TN), Method and apparatus for monitoring armature position in direct-current solenoids.
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Grymonprez Paul A. (Brussels BEX) Ruyssers Robert H. M. (Antwerp BEX) Barker Brian G. (Grove (Near Wantage) GB2 4), Method and apparatus for testing the setting of a valve.
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Silverwater Bernard (Plainview NY), Pressure indicating device.
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Hehl Karl (Arthur-Hehl Strasse 32 D-7298 Lossburg 1 DEX), Proportional valve for hydraulic systems.
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Williams Henry L. (Oklahoma City OK), Purge air control system.
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Yonezawa Keitaro (Kobe JPX), Relief valve operation detector.
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Schulz Siegfried (South Barrington IL) Schmidt Josef J. (Woodstock IL) Brennan Patrick K. (McHenry IL) Ton Scott A. (Porter IN), Relief valve testing apparatus.
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Jannotta Louis J. (Orland Park IL) Reip Raymond G. (Indian Head Park IL), Sealing valve assembly.
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Thompson Leonard J. (Wrentham MA), Set pressure verification device and method.
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Cook Sanford L. (Ocean NJ) Molisani Justin J. (Bricktown NJ), Shielded vent port.
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Theisen Terry J. (2618 Teague Houston TX 77041) Dumoit Joe D. (6507 Northway Spring TX 77389) Denning David M. (19426 Whitewood Spring TX 77379), Sight indicator.
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Bookout Philip J. (Marietta GA), Testing system for safety relief valves.
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Nogami Takeki (Takamatsu JPX) Matsushita Kunio (Takamatsu JPX) Watanabe Susumu (Hiratsuka JPX) Hashimoto Yuzo (Fujisawa JPX), Valve stem driving apparatus.
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Greenhalf, Edward J., Valve testing.
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이 특허를 인용한 특허 (8) 인용/피인용 타임라인 분석

Spencer, Mychal Phillip, Apparatus for setting and verifying set point on a valve assembly.
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Gorman, Benjamin J., Debris barrier for packer setting sleeve.
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Gorman, Benjamin J., Differential pressure control device for packer tieback extension or polished bore receptacle.
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Dabbs, Harold, Electro-hydraulic brake valve performance monitoring.
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Sandiford, J. Patrick; Smiles, Mark, Overpressure protector.
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Myers, James; Bowyer, Johnny, Pressure vacuum relief valve providing monitoring capabilities.
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White, Demetri M.; Martin, Michael W.; Divelbiss, Donald S., Remotely controlled valve.
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Grecco, John Jude; Martin, Antimo J.; Minervini, Leo; Sinclair, Franklin H., Valve position monitor.
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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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[미국특허] Remote function verification of low pressure and vacuum relief devices 원문보기