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특허 상세정보

Monitor and control circuit for electric surface controlled subsurface valve system

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) H01H-047/00   
미국특허분류(USC) 361/154 ; 361/187 ; 361/195 ; 251/12901
출원번호 US-0856543 (1992-03-24)
발명자 / 주소
출원인 / 주소
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...

대표
청구항

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 ...

이 특허를 인용한 특허 피인용횟수: 73

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