启闭特性是溢流阀静态特性中的一个主要性能,它反映了溢流阀保持系统压力恒定的能力。大家知道,在溢流阀工作时,系统压力是会发生一些变化的。在系统压力升高到某个值(开启压力)以前,溢流阀是关闭的。当系统压力达到开启压力时,溢流阀开启。此后,随着系统压力的升高,通过阀的溢流量也加大。 The opening and closing feature is a key feature of the static characteristics of a relief valve and reflects the ability of the relief valve to maintain a constant system pressure. We all know that in the relief valve work, the system pressure will be some changes. The relief valve is closed until the system pressure rises to a certain value (cracking pressure). When the system pressure reaches the cracking pressure, the relief valve opens. Since then, as system pressure increases, the amount of overflow through the valve has also increased.