一种安全阀的可变孔板流量模型

作者进行了一系列氟里昂—113液体通过安全阀的试验。液体储存在一个装有活塞的储液简中,然后通过移动活塞,使液体迅速通过安全阀排放到一个大容积的集液箱中去。试验表明:安全阀的流动特性和孔扳相类似。液体流量与安全阀进出口压差的平方根成正比,而且无论是冷的或热的氟里昂数据,都落在同一根直线上。然而,阀芯的流通截面是可变的,其大小取决于安全阀的进出口压力和通过的流量。

A Orifice Flow Rate Model with Variable Area for Relief

This article looks briefly at a series of experiments in which heated refrigerant F113 was discharged through a relief valve. The heated fluid was stored under pressure in a piston type accummulator and then rapidly discharged across a relief valve into a large blowdown tank.The tests demonstrate fiat the valve acts as an orifice. The fluid flow rate is proportional to the square root of the pressure difference across the valve and the dada forh heated and cold refrigerant both lie on the same curve. However, the discharge area-a-at the valve seat depends on both the npstream pressure and the flow through the value.