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液压电梯为防止管道或接头意外破裂造成轿厢坠落事故,一般在柱塞缸入口处安装管道破裂安全阀。一、结构原理图示为该阀的结构原理图。当从液压站至管道破裂安全阀的管道某处发生意外破裂后,p_2骤然降为零压,这时在锥阀口两侧有一很大的压差,使阀芯下移,移至b=0时小柱塞堵住孔d_1,油由小孔d_2排挤出形成阻
In order to prevent accidents caused by the accidental rupture of pipelines or joints, hydraulic elevators are generally equipped with pipeline rupture safety valves at the inlet of the piston cylinder. First, the structural principle diagram shows the structure of the valve schematic. When accidental rupture occurred from the hydraulic station to the pipe rupture safety valve somewhere, p_2 abruptly drops to zero pressure, then there is a large pressure difference on both sides of the cone valve, which causes the valve core to move down and move to b= At 0 o’clock, the small plunger blocks the hole d_1, and the oil is extruded through the small hole d_2 to form a resistance.