真空隔离闸阀连接形式分法兰、焊接两种,驱动方式有手动、电动两种。该阀门适用于工作温度≤425℃和≤550℃,工作介质为水、蒸汽或空气的管路上,作为启闭装置;尤其适用于火电厂汽机冷凝和真空负压系统,起真空隔离密封作用。
结构特点
1、设计了真空密封结构填料室,使系统与大气隔离,具有良好的环保性能。
2、选材考究,符全国内外相关标准,材料的全面质量高。
3、密封副配对先进合理,提高了密封性能,使用寿命长。
4、启闭件采用平行闸板双向弹性密封,摩擦力小,启闭轻松,维修方便,密封可靠,性能优良。
5、阀杆经调质及表面氮化处理,有良好的抗腐蚀性、抗擦伤性和耐磨性。
6、法兰垫片采用复合材料,膨胀系数大、气密性能好、保证系统与大气隔离可靠。
二、主要性能规范、材料、尺寸:
·试验压力
公称压力PN/MPaN0minalpressure试验压力/MPa Seal test壳体强度试验Shellslrenght test上密封试验Back Seal test密封试验Seat test2.53.82.82.84.06.04.44.46.49.6707.010.015011.011.0·使用范围产品类型Pr0ductcalssificati0n适用介质Applicable medium适用温度/℃Applicable temperatureNKZ61HNKZ64H H-C型NKZ964H H-C型NKZ961H水、蒸汽、空气Water,Steam,Air≤425NKZ61HNKZ64H Y-I型NKZ964H Y-I型NKZ961H水、蒸汽、空气Water,Steam,Air≤550·主要零部件材料零件名称Part name阀体、阀盖B0dy B0nnet阀杆Valve stem闸板Wedge gate密封面Sealing face阀杆螺母Valve Y0ke nut填料Parking紧固件FastenerNKZ61HNKZ64H H-C型NKZ964H H-C型NKZ961HWCB2Crl325H:合金钢H:all0ysteel铝青铜Albr0nze膨胀复合石墨Expandingc0mp0undgraphite优质碳钢High-gradecarb0n steelNKZ61HNKZ64H Y-I型NKZ964H Y-I型NKZ961H铬钼钢Cr.M0 steel20CrlM01VA铬钼钢Cr.M0 steelY:硬质合金Y:carbide all0y铬钼钢Cr.M0 steel·主要尺寸及重量公称通径DN/mmN0minaldiamecer公称压力PN/MPaN0minalpressure主要外形尺寸和连接尺寸/mmMain external andc0nnecting dimensi0ns重量/kgWeightLHDD0∝W502.5250345644937030’2502465270395826637030’2503680280425957837030’3005210030051011710037030’3006712532557014412537030’3509515035072517215137030’35013520040082022320137030’40021025045089027825337030’450300300500107033030337030’550395350550132038235137030’650530400600145043239837030’750685450650156048445037030’750906500700172053549837030’8501130600809188063860037030’9001387700900208373870037030’95018948001000259084080037030’10002621504.0250345644837030’3003065270395826637030’3004280280425957837030’3505710030051011710037030’3507512532557014412537030’40010515035072517215137030’40015020040082022319937030’45023225045089027825137030’550330300500107033030137030’650430350550132038234937030’750570400600145043239637030’850730506.4250350644837030’3003465280405826537030’3004880310435957637030’350651003505151179837030’4008112540058015012837030’40011215045073517214937030’45016120055083522319737030’55025525065090527824537030’650390300750108033029337030’750515350850134038234137030’800695400950146043238637030’9008855010.0250350644837030’3003765280405826337030’3005280310435957437030’350701003505151179737030’4008612540058015012437030’40011815045073517214437030’45016820055083522318937030’55026325065090527823537030’650405300750108033028137030’750536350850134038233337030’850732400950146043237637030’950947