security valve meaning in Chinese

安全阀

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 goes up to the value that will open the security valve , the main steam security valve will be released all by itself , discharge the excessive steam in the system and lower down the system pressure
当系统运行压力上升至安全阀的开启压力时，主蒸汽安全阀自行打开，排放主蒸汽系统中的蒸汽，使系统压力降低。