化工易燃易爆装置区防雷设施整改摘要.pdfVIP

化工易燃易爆装置区防雷设施整改 关江荫 (广州市化工设计所 ，广州市 510655) RectificationandImprovementoftheLightningProtectionFacilitiesinthe InflammableandExplosiveEquipmentsAreaofChemicalIndustry GuanJiangyin (GuangzhouChemicalEngineeringDesignInstitute，Guangzhou510655，China) Abstract Aftera lightning fire accidenton the 素，以保证化工生产安全。以下通过氯氢工段的防雷 inflammableandexplosivesiteofachemicalproduction 设施整改工程试分析之。 site， the original lightning protection facilities was rectified and improved， and the lightning stroke fire 1 现象 phenomenon isstillnotsolved aftersolving the direct 氢气放空管引自氢气分配台，放空口高 11m (含 strokelightningproblem，itisjudgedthroughanalysis 管帽高度)。由于需要调节管道系统的压力而通过一调 thatitishauntedbydischargeoflightningmagneticfield induced potentia1．According to the situation thatthe 节阀向空间排放氢 field devicesstand in greatnumbersand thepipelines 气，见图 1。在氢 aredistributed verticallyandhorizontally，thelightning 气放空管东 向8m protection scheme hasbeen designed again，and the 处设有一 22m高 harmed location of the chemical device has been 的独 立 避 雷 针 。 technicallytreated．Thephenomenaofthefirecausedby 2007年前，该放空 lightning and equipmenttrip have been eliminated by rectification and improvement， and the chemical 管 曾多次在雷雨季 productionsafetyhasbeenimproved． 节发生雷击着火事 图 1 氢气管道系统简图 Key words Lightning rod Protective range 件 ．并偶尔伴有 Fig．1 Simple diagram of LPZ0B Pulsed magnetic field Induced potential hydrogenpipelinesystem 氢泵跳闸现象。 Equipotentialbody 2 避雷针保护范围 摘 要 某化工易燃易爆生产场所雷击着火事故