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我厂高压聚乙烯装置是由德国伍德公司(UHDE)引进的,随设备带有一台液压紧固扳手,是用来拆装高压、超高压法兰螺栓及高压容器封头的专用工具。其工作原理是,利用0.7MPa压缩空气推动气动油泵,产生高压油,用高压油推动油缸将螺栓在弹性范围内拉伸,接着关闭油路,使液压油压力固定在所要求的某一数值,通过拨孔5把螺栓拧紧(螺母和法兰面接触即可)。卸去油压,法兰便因拉伸的螺栓回缩而被拧紧了。卸拆也是如此。如
Our plant is a high-pressure polyethylene plant imported from Germany (UHDE), with the equipment with a hydraulic wrench, is used to disassembly high pressure, high pressure flange bolts and pressure vessel head special tools. Its working principle is to use 0.7MPa compressed air to promote pneumatic oil pump to produce high pressure oil, high pressure oil to promote the cylinder will stretch the bolt in the elastic range, and then close the oil, the hydraulic oil pressure fixed at a required value, Tighten the bolt through the hole 5 (nut and flange surface can be). When the hydraulic pressure is removed, the flange is tightened by retracting the tensioned bolt. Unloading is also true. Such as