[특허]Monitor and control circuit for electric surface controlled subsurface valve system

Monitor and control circuit for electric surface controlled subsurface valve system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01H-047/00
출원번호	US-0856543 (1992-03-24)
발명자 / 주소	Perkins Donald H. (Carrollton TX) Deaton Thomas M. (Tulsa OK)
출원인 / 주소	Otis Engineering Corporation (Dallas TX 02)
인용정보	피인용 횟수 : 73 인용 특허 : 0

초록 ▼

A control system for applying power to a solenoid operated valve in a well completion within a borehole. The control system includes a programmable power supply for selectively applying electric power to a solenoid coil of the valve. The control system operates to apply a higher value of current to the solenoid to open the valve and a second lower value of current to maintain the operation of the solenoid in an open state and also to interrupt all current to the solenoid to close the valve. A timer controls the length of time the higher current value can be applied to the solenoid if the valve does not open and the length of delay time which must be included before again attempting to open the valve. The control system continuously monitors the state of actuation of the valve by means of an inductance monitor for determining the position of the armature of the solenoid and, thus, the state of the valve.

대표청구항 ▼

A control system for applying power to a solenoid operated valve in a well completion within a borehole comprising: programmable power supply means mounted within a surface control unit for selectively applying electric power at a first selected higher current value and a second selected lower current value to a cable connected to supply operating current to the solenoid coil of said valve; means located in said valve and responsive to said first higher value of current for operating said solenoid to move the valve to an open state and responsive to the second lower value of current for maintaining the open state of operation of the solenoid to hold the valve open and responsive to interruption of all current to the solenoid for closing said valve; means for continuously monitoring the state of actuation of said valve and providing an indication thereof at the well surface; and means within said programmable power supply means and responsive to said monitoring and indicating means for interrupting said higher value of current and applying said lower value of current in response to an indication that said valve has opened and for interrupting all current after a predetermined period of time following application of electric power at said higher current value and failure to receive an indication that said valve has opened.

이 특허를 인용한 특허 (73)

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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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Monitor and control circuit for electric surface controlled subsurface valve system 원문보기

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이 특허를 인용한 특허 (73)

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저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
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안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

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Monitor and control circuit for electric surface controlled subsurface valve system 원문보기

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