发明授权
- 专利标题: Pipe breakage control valve device
- 专利标题(中): 管道破损控制阀装置
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申请号: US09857446申请日: 2001-06-04
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公开(公告)号: US06409142B1公开(公告)日: 2002-06-25
- 发明人: Masao Kariya , Genroku Sugiyama
- 申请人: Masao Kariya , Genroku Sugiyama
- 优先权: JP11-298388 19991020
- 主分类号: F16K3112
- IPC分类号: F16K3112
摘要:
An input/output port 1 of a hose rupture control valve unit 100 is attached to a bottom port of a hydraulic cylinder 102, and an input/output port 2 is connected to one of actuator ports of a control valve 103 via an actuator line 105. The valve unit comprises a poppet valve body 5 serving as a main valve, a first spool valve body 6 serving as a pilot valve operated with a pilot pressure supplied as an external signal and having a pilot variable throttle portion 6a to operate the poppet valve body 5, a second spool valve body 50 operated with a pilot pressure and having a sub-variable throttle portion 50a to control a sub-flow rate, and a small relief valve 7 having the function of an overload relief valve.
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