|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||277/3 ; 277/12 ; 277/70 ; 277/226 ; 415/100 ; 415/112 ; 417/243 ; 417/244|
|우선권정보||JP-0097670 (1976-08-18); JP-0097671 (1976-08-18); JP-0097672 (1976-08-18); JP-0101541 (1976-08-27)|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 4 인용 특허 : 0|
A sealing system for use in a composite multi-stage pump or pumps is disclosed which utilizes part of the liquid pressurized by the pump to moderate sealing conditions by introducing said liquid to a portion or portions around the shaft, where the sealing conditions are most critical, and by thus reducing the pressure imposed on the sealing portion make the designing of seals easy. Also, by introducing pressurized liquid of relatively low temperature to the critical portion(s), minimum flow rate is lowered and thus the operational range of the pump is ex...