标准规范下载简介：
内容预览由机器从pdf转换为word，准确率92%以上，供参考
DL／T 2489-2022 电站安全阀选型导则.pdf应按下列要求确定阀门的公称尺寸： a） 根据计算所得流道面积选定阀门的公称尺寸，所选阀门的流道面积不应小于计算所得流道 面积； b）阀门公称尺寸应符合GB/T1047的规定。
应根据选定阀门的结构形式、阀体材料、压力等级，按NB/T47063的规定确定安全阀和脉冲式安 全装置的型号，按JB/T13768的规定确定动力驱动泄放阀的型号
.1 阀门制造单位应提供下列选型技术资料：
DL/T 24892022
a）阀门选型表，见附录C； b）阀门结构简图，包括外形尺寸、进出口的接口尺寸、阀门质量、主要零部件明细表等； c）阀门排量及反作用力计算书。 7.2阀门选型表、阀门结构简图经确认后，可作为技术协议和订货合同的附件。
a）阀门选型表，见附录C； b）阀门结构简图，包括外形尺寸、进出口的接口尺寸、阀门质量、主要零部件明细表等； c）阀门排量及反作用力计算书。 7.2阀门选型表、阀门结构简图经确认后，可作为技术协议和订货合同的附件。
DL/T2489—2022附录A（资料性）选型数据表表A.1给出了阀门选型所需的技术参数和技术要求。表A.1选型数据表用户名称项目名称阀门标识系统编码阀门名称阀门型号数量/台安装位置设计温度C设计压力MPa工作温度℃.工作压力MPa公称压力PN(）Class （）公称尺寸DN（）NPS (）工作介质整定压力MPa排量t/h启闭压差%弹簧式安全阀口全量型口全启式口微启式口脉冲式安全装置口结构形式带动力辅助装置的安全阀口动力驱动泄放阀口先导动力驱动泄放阀口动力驱动泄放球阀口其他（）入口法兰规格法兰材料法兰连接口出口法兰规格连接方式入口管座尺寸mm坡口形式焊接连接口出口法兰规格管座材料结构长度气动口气源压力：（）MPa带动力辅助装置电磁动口电源电压：（的安全阀）V液动口液压源压力：（）MPa安全阀起跳后送出220VAC/50Hz、5A的无源接点信号口辅助功能要求介质压力达到整定压力的75%以上时，阀门具有非手柄开启的强制开启功能口执行标准NB/T 47063其他（）备注10
DB63／T 1686-2018标准下载DL/T2489—2022附录B（资料性）修正系数B.1过热修正系数Ksh见表B.1。表B.1过热修正系数Ksh进口温度工作压力（绝对压力）205225250300325350375400425450475MPa500525550575600625过热修正系数0.500.9910.9680.9420.9190.8960.876|0.8570.8390.8230.8070.7920.7780.7650.7520.740.7280.7170.7060.750.995|0.9720.946|0.9220.899 0.8780.8590.8410.824|0.8080.7930.7790.766|0.7530.740.7290.7170.7071.000.9850.9730.95 0.925|0.9020.88 0.861|0.8430.8250.809|0.794 0.78 0.7660.7530.7410.7290.7180.7071.250.9810.9760.9540.9280.9050.883|0.8630.8440.8270.81 0.7950.7810.7670.7540.7410.7290.7180.7071.500.9570.932|0.9070.8850.865|0.846|0.8280.8120.7960.7820.7680.7550.7420.730.7180.7081.750.9590.935 0.91 0.8870.8660.8470.8290.8130.7970.7820.7690.7560.7430.7310.7190.7082.000.96 0.939|0.9130.8890.8680.8490.8310.8140.7980.7840.7690.756|0.744|0.7310.720.7082.250.9630.9430.9160.8920.870.8510.832]0.8150.7990.7850.770.7570.7440.7320.720.7092.500.946|0.919 0.894 0.872|0.852 0.8340.8160.80.7850.77110.7570.7440.7320.720.712.750.9480.922 0.8970.874|0.854 0.835 0.8170.80110.7860.77200.7580.7450.7330.7210.713.000.949 0.9250.8990.876 0.855 0.83770.819|0.802|0.787|0.7720.7590.7460.7330.7220.713.250.9510.9290.9020.8790.8570.8380.820.8030.7880.7730.7590.7460.7340.7220.7113.500.9530.9330.9050.8810.8590.840.8220.8040.7890.7740.760.7470.7340.7220.7113.750.9560.9360.9080.8830.8610.8410.8230.8060.790.7750.7610.7480.7350.7230.7114.000.9590.940.9110.8850.8630.8420.82440.8070.7910.776|0.7620.7480.7350.723 0.7124.250.9610.8084.500.9440.9170.890.7930.7770.7630.7490.7370.72550.7134.750.9460.9190.8920.868 0.8470.8280.810.7930.7780.7640.750.7370.7250.7135.000.9470.9220.8940.870.8480.8290.8110.7940.7790.7650.7510.7380.7250.7145.250.949 0.9260.897 0.8720.850.830.8120.7950.780.7655.500.9520.930.8990.8740.8510.8310.8130.7970.785.750.954 0.933 0.9020.8760.8530.833 0.8150.7980.7820.7670.7530.739|0.7270.7156.000.9570.9370.9040.8780.8550.8340.8160.7980.7830.7680.7530.740.72700.7166.250.960.940.9070.88 0.8560.8360.8170.7990.7830.7680.7540.740.7280.7166.500.9640.9440.910.8820.859|0.8370.8180.8010.7840.7690.7540.7410.7290.7166.750.9660.946|0.9130.8850.860.8390.8190.802 0.7850.7690.7550.7420.7290.7177.000.94700.9160.8870.8620.840.820.8020.7860.770.7560.7420.7290.7177.250.7430.730.7177.500.95100.922|0.891 0.865|0.843 0.823 0.805|0.7880.772 0.7570.7440.730.7187.750.9530.8670.8440.8240.8060.7880.7720.7580.7440.7310.71911
DL/T2489—2022表B.1（续）进口温度工作压力℃（绝对压力）205225250275300325350375400425450MPa500525500625过热修正系数8.000.9550.9280.896|0.8690.846|0.8250.80600.7890.7730.7440.7320.7198.250.9570.932 0.898 0.8710.8470.8270.8070.790.7740.7590.7450.7320.7198.500.96 0.935|0.901 0.8730.849|0.8280.80900.7910.7750.768.750.9630.9390.9030.8750.850.8290.810.7920.7760.760.7460.7330.7219.000.966|0.9430.9060.8770.8520.830.8110.7930.7760.7610.7470.7340.7219.250.970.9470.9090.8790.8530.8320.8120.7940.7770.762.7470.7340.7219.500.9730.95 0.9110.8810.8550.8330.8130.7950.7780.7630.7480.7340.7229.750.9770.9540.9140.8830.8570.8340.8140.7960.77910.000.981|0.957|0.9170.8850.8590.8360.8150.7970.7490.735o.72210.250.9840.9590.920.8870.860.8370.8160.7980.750.7360.72310.500.9610.9230.8890.862D.7990.7810.7650.750.73770.72310.750.9620.920.7990.7820.7510.72411.000.96300.80.7820.73770.72411.250.9640.930.8650.840.8190.7990.7810.7360.72311.500.9640.9310.8940.8650.840.8180.7980.780.7640.7490.7350.72211.750.9650.9320.8650.8170.7970.780.7630.7480.7340.72112.000.8640.830.8170.7970.779762.7470.7330.71912.250.8640.8390.8160.7960.77800.7610.7460.7320.71812.500.9670.9360.8960.8640.8380.8160.7960.7770.76.740.7310.71712.750.9680.9370.79510.71913.000.9690.939.86.830.79413.250.9710.940.8640.8370.8130.7920.7740.7570.7410.7270.71313.500.9720.9420.8970.8630.8370.8130.7920.7730.7560.7250.71214.000.790.771.7370.7230.70914.250.9780.9470.8980.810.7890.7714.500.9480.8980.8620.8330.8090.7870.7680.750.730.720.70614.750.7860.7670.7190.70415.000.948.8680.7850.7660.7170.70315.250.9470.8990.8610.8310.8060.7840.764|0.7460.7160.70215.500.9470.8990.860.830.7820.7630.7140.715.750.9460.860.7610.712.6916.000.9450.90.8590.710.69616.250.9450.90.85910.8270.80110.7780.7570.7390.7080.69416.500.9450.90.8580.7990.776]0.7560.7060.69216.750.850.7740.7540.7040.6917.000.9440.90.8560.8230.7960.7730.7520.7340.7170.7020.68817.250.9440.90.8550.8220.7940.7710.7550.7320.7150.70.68612
DL/T24892022