Two-range pressure control system
    3.
    发明授权
    Two-range pressure control system 失效
    双程压力控制系统

    公开(公告)号:US4679988A

    公开(公告)日:1987-07-14

    申请号:US777326

    申请日:1985-09-18

    IPC分类号: F16H61/00 F04B47/00 G05D16/00

    摘要: Pressure control device comprising a manual valve (VM) associated with a pressure control valve (VRP), includes a first line pressure (P.sub.L), defined by two calibrated jets in series, which are placed on a duct set at zero pressure by the manual valve (VM) being in a first position R. At a second line pressure range (P.sub.L), a duct is fed at line pressure (P.sub.L), the manual valve (VM) is in a second position A. A variation of line pressure (P.sub.L) is assured by a modulating solenoid valve (EVM), which establishes a modulated pressure (P.sub.M) acting on a differential section (.SIGMA.) of said pressure control valve (VRP).

    摘要翻译: 包括与压力控制阀(VRP)相关联的手动阀(VM)的压力控制装置包括由串联的两个校准喷嘴限定的第一管路压力(PL),其被放置在由手动设置在零压力的管道上 阀(VM)处于第一位置R.在第二管线压力范围(PL),管道以管线压力(PL)进给,手动阀(VM)处于第二位置A.管路压力的变化 (PL)通过调节电磁阀(EVM)来确定,调节电磁阀(EVM)建立作用在所述压力控制阀(VRP)的差动部分(SIGMA)上的调制压力(PM)。