预加压力必须小于储液器外壳上所标示的工作压力。
The pre-charge pressure must be less than the operating pressure engraved on the accumulator shell.
韶钢焙烧厂煤气加压机安装使用了V SR气动预旋风调节装置，实现了对风机的等压力流量调节，并可节约电能。
VSR pre-turbulent regulator was employed in the gas pressurization unit at the roasting plant of SISG, therefore a steady-pressure regulation of gas flow rate and energy saving were realized.
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