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r 详细介绍r
rr r 一、V型球阀的概念: r r r V型球阀属于固定球阀,也是单阀座密封球阀,调节性能是球阀中最佳的,流量特性是等百分比的,可调比达100:1。它的V型切口与金属阀座之间具有剪切作用,特别适合含纤维、微小固体颗粒、料浆等介质。r r r 二、ZSHV气动V型切断球阀: r r r ZSHV气动V型切断球阀是一种芯阀座采用金属,或金属对聚四氟乙烯密封配合的旋转球阀,它将球阀和蝶阀的最佳控制特性结合成一体,既可用作控制调节阀,又可作关断切断阀。r r r 三、ZSHV气动V型切断球阀的主要特点: r r r (1)不带任何管接头的整体式阀体,因此不受管道或螺栓应力影响,并且由于阀体无任何管接头,故耐压壳体不会受压力“突变”的影响;r r r (2)具有一个V型阀体,即使在小流量或高粘度介质的情况下,也可在整个量程范围内,保证控制的精确性;r r r (3)防漏耐用的阀座在其外径处衬有带不锈钢内芯PTFE杯形或是O型密封圈,阀座用截面较大的钨钴硬质合金制成,通过一个合金的波纹弹簧进一步增强了阀座的结构;r r r (4)当阀门关闭时,V型缺口与阀座之间产生楔形剪切作用,并既具有自洁功能又可防止球芯卡死,特别适用于管线结垢冻结或含有纤维和颗粒固体场合。r r r ZSHV气动V型切断球阀适用于高粘度、悬浮液、纸浆等不干净、含纤维介质场合。采用直连方式与执行机构连接,具有结构紧凑、尺寸小、重量轻、阻力小、动作稳定可靠等优点。执行机构根据用户要求配置UNIC、PSQ、HQ、DHL等型号电子式电动执行机构或GTX、AL等气动活塞式执行机构。 r r r 四、ZSHV气动V型切断球阀的技术参数: r r r| r r 型式r r | rr r 直通式铸造球阀r r | r|||||||||||||
| r r 公称通径DNr r | rr r 25r r | rr r 32r r | rr r 40r r | rr r 50r r | rr r 65r r | rr r 80r r | rr r 100r r | rr r 125r r | rr r 150r r | rr r 200r r | rr r 250r r | rr r 300r r | rr r 350r r | rr r 400r r | r
| r r 阀座直径r r | rr r 20r r | rr r 26r r | rr r 33r r | rr r 40r r | rr r 53r r | rr r 66r r | rr r 86r r | rr r 104r r | rr r 128r r | rr r 170r r | rr r 212r r | rr r 255r r | rr r 300r r | rr r 340r r | r
| r r 额定流量系数Kvr r | rr r 25r r | rr r 36r r | rr r 63r r | rr r 100r r | rr r 184r r | rr r 280r r | rr r 400r r | rr r 600r r | rr r 950r r | rr r 1540r r | rr r 2500r r | rr r 3900r r | rr r 6150r r | rr r 9800r r | r
| r r 公称压力PNr r | rr r PN1.6、6.4MPar r | r|||||||||||||
| r r 泄漏量r r | rr r 软密封:≤1.8×10-7×△P×DN.I/h(试验介质为液体:式中△P为压差) 硬密封:≤10-4×阀额定容量.I/h(阀额定容量的计算见附表)r r | r|||||||||||||
| r r 气源压力r r | rr r 0.4~0.6MPar r | r|||||||||||||
| r r 连接形式r r | rr r 对夹式、法兰式、管道法兰按JB79-59标准r r | r|||||||||||||
| r r 适用温度r r | rr r 软密封-40℃~+180℃;硬密封-40℃~+450℃r r | r|||||||||||||
| r r 球芯转角r r | rr r 90?r r | r|||||||||||||
| r r 流量特性r r | rr r 近似等百分比(典型曲线图见附录)r r | r|||||||||||||
| r r 阀体材料r r | rr r 铸钢、铸不锈钢r r | r|||||||||||||
| r r 球芯型式r r | rr r 部分球带有V形缺口r r | r|||||||||||||
| r r 阀座材料r r | rr r 聚四氟乙烯、不锈钢司钛莱硬合金r r | r|||||||||||||
| r r 基本误差r r | rr r ≤全行程的±2%(带定位器)r r | r|||||||||||||
| r r 回差r r | rr r ≤全行程的2.0%(带定位器)r r | r|||||||||||||
| r r 死区r r | rr r ≤全行程的0.8%(带定位器)r r | r|||||||||||||
| r r 公称通径r r r DNr r | rr r Lr r | rr r H1 r r | rr r H2 r r | rr r L1 r r | rr r L2 r r | rr r D1 r r | rr r n-dr r | r|||
| r r 单作用r r | rr r 双作用r r | rr r 单作用r r | rr r 双作用r r | rr r 单作用r r | rr r 双作用r r | r|||||
| r r 25r r | rr r 102r r | rr r 388r r | rr r 359r r | rr r 60r r | rr r 125r r | rr r 56r r | rr r 125r r | rr r 56r r | rr r 85r r | rr r 4-14r r | r
| r r 32r r | rr r 102r r | rr r 396r r | rr r 396r r | rr r 65r r | rr r 125r r | rr r 96r r | rr r 125r r | rr r 96r r | rr r 100r r | rr r 4-18r r | r
| r r 40r r | rr r 114r r | rr r 406r r | rr r 406r r | rr r 75r r | rr r 125r r | rr r 96r r | rr r 125r r | rr r 96r r | rr r 110r r | rr r 4-18r r | r
| r r 50r r | rr r 124r r | rr r 484.5r r | rr r 484.5r r | rr r 95r r | rr r 159.5r r | rr r 123.5r r | rr r 159.5r r | rr r 123.5r r | rr r 125r r | rr r 4-18r r | r
| r r 65r r | rr r 143r r | rr r 526r r | rr r 499.5r r | rr r 105r r | rr r 200.5r r | rr r 123.5r r | rr r 200.5r r | rr r 123.5r r | rr r 145r r | rr r 4-18r r | r
| r r 80r r | rr r 165r r | rr r 743r r | rr r 536r r | rr r 120r r | rr r 324r r | rr r 150r r | rr r 644r r | rr r 150r r | rr r 160r r | rr r 8-18r r | r
| r r 100r r | rr r 194r r | rr r 756r r | rr r 549r r | rr r 140r r | rr r 324r r | rr r 150r r | rr r 644r r | rr r 150r r | rr r 180r r | rr r 8-18r r | r
| r r 125r r | rr r 213r r | rr r 809r r | rr r 773r r | rr r 165r r | rr r 398r r | rr r 324r r | rr r 627r r | rr r 324r r | rr r 210r r | rr r 8-18r r | r
| r r 150r r | rr r 229r r | rr r 993r r | rr r 793r r | rr r 185r r | rr r 556r r | rr r 324r r | rr r 776r r | rr r 324r r | rr r 240r r | rr r 8-23r r | r
| r r 200r r | rr r 243r r | rr r 1033r r | rr r 869r r | rr r 205r r | rr r 556r r | rr r 398r r | rr r 776r r | rr r 398r r | rr r 295r r | rr r 12-23r r | r
| r r 250r r | rr r 297r r | rr r 1080r r | rr r 1073r r | rr r 240r r | rr r 642r r | rr r 540r r | rr r 1016r r | rr r 540r r | rr r 355r r | rr r 12-25r r | r
| r r 300r r | rr r 338r r | rr r 1117r r | rr r 1113r r | rr r 290r r | rr r 759r r | rr r 540r r | rr r 1294r r | rr r 540r r | rr r 410r r | rr r 12-25r r | r
| r r 350r r | rr r 380r r | rr r 1326r r | rr r 1155r r | rr r 330r r | rr r 856r r | rr r 632r r | rr r 1399r r | rr r 632r r | rr r 470r r | rr r 16-25r r | r
| r r 400r r | rr r 420r r | rr r 1361r r | rr r 1190r r | rr r 360r r | rr r 856r r | rr r 632r r | rr r 1399r r | rr r 632r r | rr r 525r r | rr r 16-30r r | r