介绍了安全阀回座压力校验装置的设计、参数的验算、数据的电脑采集处理。
This paper introduces the design, calculation of parameters, the collection and process of data by computer for the test equipment of setback pressure for safety valve.
通过实际应用，认为该装置达到了设计要求，满足了业主对安全阀回座压力校验的要求。
The equipment accords with the requirement of design and user of safety valve in practice.
从弹簧刚度、整定压力范围，讨论了针对安全阀同一口径，在整定压力和回座压力比较接近的情况下，弹簧的优化设计。
From spring rigidity and range of set pressure, spring optimize design to same diameter's safety valve at set pressure near blow-down pressure are discussed.
当系统运行压力降低至安全阀的回座压力时，主蒸汽安全阀自行关闭，停止排放，从而对主蒸汽系统的管道和设备起安全保护作用。
When the system pressure drops to the return pressure, the security valve will be closed and stop discharging, in the way of which the pipelines and equipments of the steam system will be protected.
当系统运行压力降低至安全阀的回座压力时，主蒸汽安全阀自行关闭，停止排放，从而对主蒸汽系统的管道和设备起安全保护作用。
When the system pressure drops to the return pressure, the security valve will be closed and stop discharging, in the way of which the pipelines and equipments of the steam system will be protected.
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