毕业设计(论文)第I页智能型GQ38/45-60高压阀门电动装置设计摘要高压阀门在使用过程中容易造成内漏是众所周知的普遍性问题,以致于火电厂在机组大小修中经常花大量费用更换新阀门,但是,无论更换的是国内或进口的优质阀门,换来换去仍然是内漏。我们习惯于把此类问题定性为阀门质量问题,实际上我们忽略了另一个更重要的因素,即阀门电动装置在关闭阀门时是否施加给阀门一个科学、合适的关紧力。因为阀门在关闭后期的压差最大,关紧力达不到,密封面就会产生泄漏,漏则永久性关不严。通常我们使用的电动阀门选用的电动装置有具备一些常规功能的普通型、有自动化程度很高的智能型;但是无论哪一种都没有把阀门关紧力的设定放在首位来考虑。目前,用户多采用行程来控制阀门关闭,设定力矩仅仅作为一种辅助性保护,根本无法满足对阀门关紧力的控制。关键字阀门,电动装置,分类选型,少齿差毕业设计(论文)第II页THEELECTRICDEVICEOFHIGH-PRESSUREVALVEAutor:BaiJunShiTutor:GuoChangJiangAbstractHigh-pressurevalveinthecourseoftheinternalleakageislikelytocausethewell-knownproblem,sothatthesizeofthermalpowerplantsintheunitcostofrepairoftenspendalotofvalvereplacement,however,,infact,weignoreanothermoreimportantfactor,thatis,thevalveisclosedthevalvewhentheelectricaldeviceisascienceappliedtothevalve,,sealingsurfacewillhavealeak,,thereisahighdegreeofautomation,intelligent;,manyusersturnoffthevalvetocontroltheuseoftravel,settorqueonlyasasupplementaryprotection,;electricdevice;CategorySelection;smallteethdifferencegeer毕业设计(论文)第III页目录全套毕设资料(含设计图纸),请加扣扣九七一九二零八零零咨询1绪论......................................................................................................................................................................................................................................................................................................................................................................................
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