產品展示
QB640H-40G,QB640H-64G,QB640H-10W,QB640H-16W,氣動偏芯半球閥QB640H/QB640Y型采用GT型氣動執(zhí)行器
【簡單介紹】
【詳細說明】
QB640H-64KJ,QB640H-10BJ,QB640H-16BJ,QB640H-25BJ,QB640H-40BJ,QB640H-64BJ,QB640H-10GC,QB640H-16GC,QB640H-25GC,QB640H-40GC,QB640H-64GC,QB640H-10KW,QB640H-16KW,QB640H-25KW,QB640H-40KW,QB640H-64KW,QB640H-10BW,QB640H-16BW,QB640H-25BW,QB640H-40BW,QB640H-64BW,QB640H-10KC,QB640H-16KC,QB640H-25KC,QB640H-40KC,QB640H-64KC,QB640H-10BC,QB640H-16BC,QB640H-25BC,-40BC,QB640H-64BC
QB640H/QB640Y型氣動偏芯半球閥(采用GT型氣動執(zhí)行器)概述
QB640H/QB640Y型氣動偏芯半球閥(采用GT型氣動執(zhí)行器)是一種直角旋轉的控制閥,由活塞式雙作用或單作用(彈簧復位式)氣動執(zhí)行器和偏芯半球閥組成,它與電氣閥門定位器或電磁閥配套使用,可實現對工藝管路中流體介質的調節(jié)或切斷控制。半球切口的球體與閥座之間具有剪切作用,特別適用于含有纖維、微小固體顆粒、紙漿、煤灰等介質的工況.


QB640H/QB640Y型氣動偏芯半球閥(采用GT型氣動執(zhí)行器)結構特點
雙偏心式半球閥是近年來開發(fā)的*產品,以其設計合理,結構*,具有流通阻力小,密封性能好,使用壽命長特點,利用偏心閥體、偏心球體和閥座,閥桿作旋轉運動時在共同軌跡自動定心,關閉過程中越關越緊,*達到良好的密封目的,閥門在啟閉動作時球體與閥座*脫開,消除了密封圈的磨損,克服了傳統(tǒng)球體閥座與球體密封面始終磨損的問題,非金屬彈性材料被嵌于金屬座中,閥座金屬密封面受到良好的保護。全開時流通能力大、壓力損失小、且介質不易沉積在閥腔內。具有精確的調節(jié)和可靠定位功能,流量特性為近似等百分比,可調范圍大,zui大可調比100:1。
QB640H/QB640Y型氣動偏芯半球閥(采用GT型氣動執(zhí)行器)工作原理
以壓縮空氣為動力,通過活塞齒條,齒輪的機械傳動閥桿,以角行程輸出的扭矩轉動球體繞中心A轉動,球體自B點移至C點,此時相對閥門中心點O,從B到C的軌跡為一突輪狀偏芯,右旋轉入閥座使閥門關閉保持優(yōu)良密封,按突輪原理設計,閥門關閉件從開啟到關閉過程中,作用在閥座上的力逐漸增加,即關閉件表面與閥座由*脫離到接觸,并逐漸增大密封比壓,直到*密封,反之為開。
QB640H/QB640Y型氣動偏芯半球閥(采用GT型氣動執(zhí)行器)主要零件材料及適用溫度、介質
材料代號 | C(WCB) | P(304) | R(316) | ||
主要零件 | 閥體 | WCB | ZG1Cr18Ni9Ti | ZG1Cr18Ni12Mo2Ti | |
球體 | 2Cr13、(304) | 1Cr18Ni9Ti | 1Cr18Ni12MoTi | ||
閥桿 | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12MoTi | ||
閥座密封 | 增強聚四氟乙烯、對位聚苯、硬質合金鋼密封 | ||||
填料 | 聚四氟乙烯、柔性石墨 | ||||
適用工況 | 適用介質 | 蒸汽、水、油品 | 堿類腐蝕性介質 | 醋酸類腐蝕性介質 | |
適用溫度 | 聚四氟乙烯≤180℃,對位聚苯≤300℃,金屬密封≤425℃ |
QB640H/QB640Y型氣動偏芯半球閥(采用GT型氣動執(zhí)行器)技術性能參數
主要外形和連接尺寸
壓力 (MPa) | 通徑 DN(mm) | 尺寸(mm) | ||||||||||||
L | PN1.6MPa | PN2.5MPa | PN4.0MPa | |||||||||||
法蘭 | D | D1 | D2 | Z-фd | D | D1 | D2 | Z-фd | D | D1 | D2 | Z-фd | ||
PN1.6 PN2.5 PN4.0 | 40 | 125 | 145 | 110 | 85 | 4-18 | 145 | 110 | 85 | 4-18 | 145 | 110 | 85 | 4-18 |
50 | 140 | 160 | 125 | 100 | 4-18 | 160 | 125 | 100 | 4-18 | 160 | 125 | 100 | 4-18 | |
65 | 178 | 180 | 145 | 120 | 4-18 | 180 | 145 | 120 | 8-18 | 180 | 145 | 120 | 8-18 | |
80 | 190 | 195 | 160 | 135 | 8-18 | 195 | 160 | 135 | 8-18 | 195 | 160 | 135 | 8-18 | |
100 | 200 | 215 | 180 | 155 | 8-18 | 230 | 190 | 160 | 8-23 | 230 | 190 | 160 | 8-23 | |
125 | 254 | 245 | 210 | 185 | 8-18 | 270 | 220 | 188 | 8-25 | 270 | 220 | 188 | 8-25 | |
150 | 267 | 280 | 240 | 210 | 8-23 | 300 | 250 | 218 | 8-25 | 300 | 250 | 218 | 8-25 | |
200 | 292 | 335 | 295 | 265 | 12-23 | 360 | 310 | 278 | 12-25 | 375 | 320 | 282 | 12-30 | |
250 | 330 | 405 | 355 | 320 | 12-25 | 425 | 370 | 332 | 12-30 | 445 | 385 | 345 | 12-34 | |
300 | 390 | 460 | 410 | 375 | 12-25 | 485 | 430 | 390 | 16-30 | 510 | 450 | 408 | 16-34 |

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