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1、电站高温高压截止阀、闸阀技术条件DL/T531-1994目次，卫主题内容与适用范围·················································‘························⋯⋯525，一引用标准·······················································································⋯⋯525凡﹂术语·······································
2、······················································⋯⋯526J马产品分类··············。······，···································································⋯⋯526弓︺技术要求···················，··································································⋯⋯527产0试验方
3、法········，·············································································⋯⋯530门夕.检验规则········，，··································，···············，····························⋯⋯530卜吕检验标准··············，···············································
4、·························⋯⋯532n，标志、包装、运输和保管··········································，···············，······⋯⋯536524中华人民共和国电力行业标准电站高温高压截止阀、Dl,/`T531-1994闸阀技术条件TechnicalSpecificationofHighTemperatureHighPressureGlobeStopValvesandGateValvesforPowerStation1主题内容与适用
5、范围本标准规定了电站用高温、高压截止阀、闸阀的分类及产品的质量要求。本标准适用于公称压力DN为20,25,32MPa，工作温度等于或低于4251;;工作压力P为10,14,17MPa，工作温度为510,540,5701';工作介质为水、蒸汽的截止阀、闸阀。引用标准JB2765阀门名词术语JB4018电站阀门型号编制方法ZBJ98015承压铸钢件技术条件GB12231阀门铸钢件外观质量要求JB2633锅炉锻件技术条件GB1176铸造铜合金技术条件GB699优质碳素结构钢技术条件GB3077合金结构钢技术条件GB979碳
6、素钢铸件分类及技术条件GB4981工业用阀门的压力试验GB6414铸件尺寸公差GB1804公差与配合未注公差尺寸的极限偏差GB3595电站阀门制造技术条件GB5677铸钢件射线照相及底片分类方法GB7233铸钢件超声波探伤及质量评级方法GB9443铸钢件渗透探伤及质量评级方法GB9444铸钢件磁粉探伤及质量评级方法SDBDZ系列阀门电动装置SDZ包装通用技术条件中华人民共和国电力工业部1994-03-18批准1994-10-01实施3术语截止阀—启闭件(阀瓣)由阀杆带动沿阀座(密封面)轴线作升降运动的阀门;闸阀—启闭
7、件(闸板)由阀杆带动沿阀座密封面作升降运动的阀门;手动截止阀、闸阀—由手轮、冲击手轮或齿轮转动驱动的截止阀、闸阀;电动截止阀、闸阀—由电动装置驱动的截止阀、闸阀C4产品分类4.1阀门型号的编制方法按JB4018标准规定执行4.2公称压力分为三级:20,25,32MPa4.3介质温度分为四级:425,510,540,5701Co4.4阀门公称通径分为18种规格:10,20,25,32,40,50,65,80,100,125,150175,200,225,250,275,300,350mmo4.5截止阀结构长度见表1。闸
8、阀结构长度见表2表1截止阎结构长度:1-公称压力上作压力公称通径UNMNMN{201010202532。405065st)10012515125141301702003504204705706607603217砚11F320表2闸阀结构长度nini公称通径1JN公称ft力工作压力MPa入妇506580l001251501752002252502
