©2004DEHN+SÖHNETrainingEx-Basics2008BasicPrinciplesofExplosionProtection防爆基本原则©2004DEHN+SÖHNETrainingEx-Basics2008BasicPrincipleofExplosionProtection防爆基本原则Thesethreeconditionsmustexist:爆炸发生的三个必要条件:爆炸物点火源氧气©2004DEHN+SÖHNETrainingEx-Basics2008BasicPrincipleofExplosionProtection防爆基本原则空气浓度可燃物在空气中的浓度浓度太低浓度太高©2004DEHN+SÖHNETrainingEx-Basics2008BasicPrincipleofExplosionProtection防爆基本原则爆炸下限浓度爆炸上限浓度物质名称乙炔乙烯汽油苯天然气燃用油/柴油甲烷丙烷二硫化碳民用燃气氢©2004DEHN+SÖHNETrainingEx-Basics2008BasicPrincipleofExplosionProtection防爆基本原则1.避免产生爆炸环境2.防止在爆炸环境出现点火源3.限制爆炸造成的危害整体防暴措施©2004DEHN+SÖHNETrainingEx-Basics2008Avoidingofexplosiveatmoshere避免爆炸环境产生1可采取以下措施:避免易燃物质（替代技术）/惰性化（充氮，二氧化碳等）/限制浓度/自然或人工通风©2004DEHN+SÖHNETrainingEx-Basics2008Preventionoftheignitionofanexplosiveatmoshere防止爆炸环境出现点火源2如果不能够通过基本的防爆措施完全或者部分避免爆炸环境的存在，那就需要采取措施防止点火源在爆炸环境中产生。因此根据爆炸环境存在概率，将危险区域进行划分。©2004DEHN+SÖHNETrainingEx-Basics2008Zone0Zone1Zone22PrincipleofProtectionZones防护区划分Gases,Dust,Vapours气体,粉尘,蒸汽©2004DEHN+SÖHNETrainingEx-Basics2008ConstructionalRequirementsforExplosionProtectedElectricalApparatus防爆电器的应用要求气体,蒸汽,雾粉尘爆炸环境存在频率连续长时间经常偶尔不常短时间G代表气体,D代表粉尘©2004DEHN+SÖHNETrainingEx-Basics20082ExampleofProtectionZones防护区划分示例Gases,Dust,Vapours气体,粉尘,蒸汽Zone2Zone1©2004DEHN+SÖHNETrainingEx-Basics2008Zone0Zone2Zone1Zone02ExampleofProtectionZones防护区划分示例Gases,Dust,Vapours气体,粉尘,蒸汽©2004DEHN+SÖHNETrainingEx-Basics2008Newmarkingacc.ATEX新ATEX认证标识©2004DEHN+SÖHNETrainingEx-Basics2008Markingacc.ATEXATEX认证标识EQUIPMENT-GROUPI(Mining)SufficientSafetyCategoryM1veryhighlevelofprotectionBymeansof2protectivemeasures/2faultsCategoryM2HighlevelofprotectionTheequipmentisintendedtobedenergizedintheeventofanexplosiveatmosphere设备组别I(采矿业)非常高的防护等级高防护等级类别M1类别M2确保安全通过2个保护措施/2故障点在爆炸环境下,该类设备禁止通电工作©2004DEHN+SÖHNETrainingEx-Basics2008EQUIPMENT-GROUPII(otherexplosiveatmosphere)SufficientSafetyCanbeusedinAtmosphereG=Gas,D=DustCategory1*veryhighlevelofprotectionBymeansof2protectivemeasures/faultsZone0Zone20GDZone1Zone21Zone2Zone22Category2*highlevelofprotectionGDGDFrequentlyoccuringequip-mentfaults/1faultDuringnormaloperationCategory3*normallevelofprotection*II(1)G=associatedelectricalapparatus-installationinthesafeareaMarkingacc.ATEXATEX认证标识非常高防护水平高防护水平一般防护水平确保安全通过2个防护措施/故障时常发生设备故障/1故障点正常运行状态可用于环境G=气体,D=粉尘©2004DEHN+SÖHNETrainingEx-Basics2008AccordingtoEuropeanStandardEExplosionProtectionEquipmentExMarkingacc.ATEXATEX认证标识根据欧洲标准防爆设备©2004DEHN+SÖHNETrainingEx-Basics2008TYPESOFPROTECTIONTypeofprotectionMainapplicationStandardMeasurestoreducetheprobailityofsparkformationandincreasedtemperature.Theremustbenoignitionsourcepresentinnormaloperation.Useinconnectionsystems(motors).EN50019IEC60079-7FM3600UL2279IncreasedsafetyeFlameproofenclosureSwitchgearandcontrolgearanindicatingequipment,controlsystem,motors,transformers,hestingequipment,lightfittingsEN50018IEC60079-1FM3...
