Top ( upper ) mounting type : unnecessary to unload valve from pipeline for maintenance but just by opening the bonnet for on - line maintenance 顶<上>装式:阀门维修时不需要从管道拆下,只要打开阀盖即可进行在线维修。
Based on the test system of unloading valve , the step response method is used to acquire the step response curve of this system 以卸荷阀性能测试系统作为研究对象,利用阶跃响应法获得系统的阶跃响应曲线并求得了系统的传递函数。
The identification method is studied and the transfer function of the automobile air brake unloading valve ' s test system is acquired ; the pressure balance time of the test system of the unloading valve is studied by the increasing pressure in different speed and scope 本文主要研究内容是汽车气制动卸荷阀性能测试系统的传递函数的辨识方法及不同的加压方式对系统压力平衡时间的影响并进行了相应的试验验证。
This machine is fit for the testing use of water pressure intension for highpressure vase as oxygen carbon dioxide , nitrogen , hydrogen , etc . , with for functions of loading and unloading valve , water pressure intension testing . auto overturn water pulling , pressure tested under free condition , advanced at home , and is the favorite equipment for steel vase testing stationgs and manufacturers 本产品适用于高压气瓶(氧气、二氧化碳、氮气、氢气等, )作水压强度试验,具有装卸瓶阀、水压强度试验,自动翻转倒水,四大功能,在只有状态下试压,是目前国内较为先进的高压气瓶试压装置,是各钢瓶检测站、制造厂理想设备。