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欢迎您，可以在断电的紧急情况自动将阀门返回至预设的安全位置。其潜在需求应用，包括如石油化工与其它危险流体的输送沙巴体育手机app - 欢迎您、精炼厂、消防系统、危险区域温度控制与通风、隧道通风等。</p> <p> 　　在石油天然气行业中，防爆型复归电动执行器能够有效防止灌区的溢流?；?、油罐、输油管道、天然气计量调压站的排流?沙巴体育手机app - 欢迎您；?，有效避免大型灾害的发生。其它领域的应用还包括水处理中防止爆管时的排水、电厂的蒸汽发生炉、公路与铁路隧道的紧急防护措施等沙巴体育手机app - 欢迎您。</p> <p> 　　弹簧复归型电动执行器属于机械蓄能类的执行机构，在正常供电情况下，由电机驱动设备开启和弹簧蓄能沙巴体育手机app - 欢迎您，系统紧急断电时，弹簧释放能量驱动执行器，使设备和装置回归到全开或全关的安全位置。内部机械部分包括驱动单元、蓄能单元和能量锁定单元。三个单元由齿轮传动构成完整的传动链体系。其特点是结构紧凑，占用空间小，无需周期性维护，可长期无故障运行沙巴体育手机app - 欢迎您，90°全行程保持弹簧高效驱动，紧急关(开)阀门时快速而无冲击沙巴体育手机app - 欢迎您。</p> <p> 　　此系列电动执行器的力矩范围最高可达600N·m，弹簧复位时间小于30秒，特别适用于90°的蝶阀、球阀和<a href="http://www.myplatinumplusent.com/famenjishu/402.html">旋塞阀</a>。紧急操作过程中，是部分回转执行器安全开或关的最佳选择。</p> <p> 　　转载于《阀门用户》2018年7月号总第49期。</p> <div class="fanye"> <p>上一篇：<a href='/famenjishu/chenjiao.html'>脱硫专用衬胶蝶阀图片及其型号大全</a> </p> <p>下一篇：<a href='/famenjishu/952.html'>大流量低噪音高压气体减压阀</a> </p> </div> <div class="tjfm"><h3><span>相关阀门：</span></h3> <div class="d"> <div id='tag989e660ab3d6f99ca68c1fbaf2971b2c'> <div class="d1"><a href="/zhafa/pz973h-pz973y-pz973f.html"><img src="/uploads/150708/dddzf.jpg" alt="PZ973H电动刀闸阀" width="150" height="150" /></a> <span>PZ973H电动刀闸阀</span></div> <div class="d1"><a href="/diefa/d342f.html"><img src="/uploads/150708/spxfldf.jpg" alt="D342F双偏心法兰蝶阀" width="150" height="150" /></a> <span>D342F双偏心法兰蝶阀</span></div> <div class="d1"><a href="/zhafa/z41w-z41y.html"><img src="/uploads/150708/gbzf.jpg" alt="Z41W、Z41Y国标闸阀" width="150" height="150" /></a> <span>Z41W沙巴体育手机app - 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