原文：
         快速卸荷阀的工作原理 　　它的上部接有一个杯装滑阀、滑阀的下部腔室与油动机活塞下部的高压油路相通、并受到高压油的作用，在杯装滑阀的底部中间有一小孔、疏水阀使少量的压力油通到滑阀上部的油室、该油室有两路，一路经过逆止阀与危急遮断油路相通，蝶阀正常运行时由于遮断油总管上的油压等于高压油的油压它顶着逆止阀并使之关闭，滑阀上部的压力油不能从此路泄去、另一油路是通经针形阀控制的缩孔、眼镜阀控制通到油动机活塞上腔的油的通道、调节针形阀的开度可以调整滑阀上的油压、以供调试整定之用。

         正常运行时滑阀上部的油压作用力加上弹簧的作用力大于滑阀下部高加油的作用力，使杯装滑阀压在底座上、调节阀连接回油油路油口被关闭、当汽轮机故障电磁阀动作，遮断油总管失压、作用在杯形滑阀上的压力油顶开逆止阀并泄油、使该阀上部的油压急剧下降、下部的高压油推动滑阀上移，过滤器滑阀套筒上部的泄油口被打开、从而使油动机内的高压油失压，并在弹簧力的作用下，迅速下降，关闭主汽门，使机组停机。

“Fast unloading valve works ”是由中国安全阀网提供的国际阀门新闻，译文仅供参考。另外，中国安全阀网还提供相关产品搜索： 弹簧式安全阀、 脉冲式安全阀(先导式安全阀)、 杠杆式安全阀、 微启式安全阀、 全启式安全阀等。

译文：
            Fast unloading valve works Its top pick to have a glass slide valve, slide valve of the lower chamber and the lower part of the oil motivated the high pressure piston connected, and by the role of high-pressure oil, glass slide valve in the bottom of the middle of a small hole so little pressure oil to the slide valve through the upper oil chamber, the oil chamber with two-way, all the way through the check valve connected with the Emergency Trip asphalt,Hydraulic control valves normal running Explorer on the trip oil as hydraulic oil pressure is equal to it withstand high-pressure oil Check valve and make it close, the pressure of the upper slide valve oilForged Steel Valves can not be drained from this road, pass through another oil line is the needle valve control shrinkage, controlCast Steel of oil through the piston chamber of the oil motivated the channel, adjust pin shaped valve opening can be adjusted on the hydraulic spool valve to be used for debugging setting. Upper normal operation the hydraulic spool valve spring force plus Other pumpsthe force is greater than the lower part of the high fuel slide valve the force, so that glass slide valve pressure on the base, connect back to oily road oil port was closed, when the steam turbine fault valve action, trip oil pressure mains failure, the role of the cup-shaped slide valve on top to openWater Control valves the oil pressure check valve and drain so that the upper part of the hydraulic valve sharp decline in the lower part of the high pressure oil to promote the slide valve on the move, slide valve sleeve upper drain port is opened, allowing high pressure oil within the oil motive pressure loss and the role of the spring force, the rapid decline, close the main valve, so that unit down.

原文来源：http://www.1anquanfa.com/

2010-08-30 07:59

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