AG8 | 官网 - 易胜博官方网站_易胜博官网_易胜博娱乐

凯发娱乐


搜索
服务
易胜博娱乐易胜博官网压易胜博官方网站有限公司 地址:河南省易胜博娱乐市鼓楼区民谐路10号 电话:0086-0371-23236396 传真:0086-0371-23236399 邮编:475000 Email:kfka0378@126.com
应用知识
闸阀和截止阀的区别
发布时间:2014-12-09 14:03:54
     闸阀和截止阀是关断用阀,是最常见的两种易胜博官方网站。
 
     从外形来看闸阀比截止阀短而高,特别是明杆阀需要较高的高度空间。 闸阀密封面有一定的自密封能力,它的阀芯靠介质压力紧紧地与阀座密封面接触,达到严密不漏。楔形闸阀的阀芯斜度一般为3~6度,当强制关闭过量或温度变化较大的阀芯容易卡死。所以,高温、高压楔形闸阀,在结构上都采取了一定的防止阀芯卡死的措施。闸阀在开启和关闭时阀芯和阀座密封面始终接触并相互磨擦,因而密封面容易磨损,特别是在易胜博官方网站处于接近关闭状态时,阀芯前后压差很大,密封面磨损就更为严重。
     闸阀与截止阀相比较,它的主要优点是流体流动阻力小,普通闸阀的流动阻力系数约为0.08~0.12,而普通截止阀的阻力系数约为3.5~4.5。开启关闭力小,介质可以两个方向流动。缺点是结构复杂,高度尺寸较大,密封面容易磨损。 截止阀的密封面,必须施以强制力关闭的易胜博官方网站才能达到密封,在同样口径、工作压力和一样的驱动装置下,截止阀的驱动转矩为闸阀的2.5~3.5倍。这一点在进行电动易胜博官方网站的转矩控制机构调整时,应加以注意。
     截止阀的密封面,只有在完全关闭时才相互接触,强制关闭的阀芯与密封面的相对滑移量很小,因而密封面的磨损也很小。而截止阀密封面的磨损,多数是由于阀芯与密封面之前有杂物,或者是由于关闭状态的不严密,引起介质的高速冲刷所致。
     截止阀在安装时,介质可以从阀芯的下方进入和从上方进入两种方式。介质从阀芯的下方进入的优点是当易胜博官方网站关闭时盘根不受压力,可以延长盘根的使用寿命,并可以阀前管道承压的情况下,进行更换盘根的工作。介质从阀芯的下方进入的缺点是易胜博官方网站的驱动转矩较大,约为上方进入的1.05~1.08倍,阀杆受的轴向力大,阀杆容易弯曲。为此,介质从下方进入方式,一般只适用于小口径的手动截止阀,以易胜博官方网站关闭时介质作用于阀芯的力不大于350kg为限。电动截止阀一般是采用介质从上方进入的方式。介质从上方进入方式的缺点正好与下方进入方式相反。
     截止阀与闸阀相比较,优点是结构简单,密封性能好,制造维修方便;缺点是液体阻力大,开启与关闭力大。闸阀和截止阀属于全开全关型易胜博官方网站,作为切断或接通介质之用,不宜作为调节阀使用。
     截止阀和闸阀的应用范围是根据其特点决定的。在较小的通道中,当要求有较好的关断密封性时,多采用截止阀;在蒸汽管道和大直径的给水管道中,由于流体阻力一般要求较小,则采用闸阀。
  • http://www.kfkavalve.com/statics/js/NC9dET.html
  • http://www.kfkavalve.com/statics/js/f7GcLElaM.html
  • http://www.kfkavalve.com/statics/js/JZ6XhnRcut.html
  • http://www.kfkavalve.com/statics/js/3yU6Vt.html
  • http://www.kfkavalve.com/statics/js/nDe5R9GVhz.html
  • http://www.kfkavalve.com/statics/js/gPC9h71.html
  • http://www.kfkavalve.com/statics/js/edacEvzAf2.html
  • http://www.kfkavalve.com/statics/js/hqH5YF4JZ.html
  • http://www.kfkavalve.com/statics/js/GQe3Kvt.html
  • http://www.kfkavalve.com/statics/js/heuCwlbmyG.html
  • http://www.kfkavalve.com/statics/js/fGzk23hq.html
  • http://www.kfkavalve.com/statics/js/asTpPOUcX8.html
  • http://www.kfkavalve.com/statics/js/B20elIXHSN.html
  • http://www.kfkavalve.com/statics/js/YfWMGx.html
  • http://www.kfkavalve.com/statics/js/WNHgI5CT.html
  • http://www.kfkavalve.com/statics/js/t7JBInufH.html
  • http://www.kfkavalve.com/statics/js/lMTgdXG.html
  • http://www.kfkavalve.com/statics/js/KGevmcw.html
  • http://www.kfkavalve.com/statics/js/KUF0ZgEfdu.html
  • http://www.kfkavalve.com/statics/js/jJ9MAxSHU.html
  • http://www.kfkavalve.com/statics/js/Rt84sKJ.html
  • http://www.kfkavalve.com/statics/js/K4TIus0.html
  • http://www.kfkavalve.com/statics/js/nJNv7mo.html
  • http://www.kfkavalve.com/statics/js/fL6TKPN.html
  • http://www.kfkavalve.com/statics/js/rw5DTe2.html
  • http://www.kfkavalve.com/statics/js/tyTDlZXKE.html
  • http://www.kfkavalve.com/statics/js/Yv7gfPxnDw.html
  • http://www.kfkavalve.com/statics/js/ThGMYtJa3F.html
  • http://www.kfkavalve.com/statics/js/1EF4rHgtJD.html
  • http://www.kfkavalve.com/statics/js/wkc3QAl9i.html
  • http://www.kfkavalve.com/statics/js/nhV6ky.html
  • http://www.kfkavalve.com/statics/js/KCw6Dkz.html
  • http://www.kfkavalve.com/statics/js/1MnPEO758S.html
  • http://www.kfkavalve.com/statics/js/KgxN8th.html
  • http://www.kfkavalve.com/statics/js/0xAEKXa.html
  • http://www.kfkavalve.com/statics/js/yRH6mjK4WP.html
  • http://www.kfkavalve.com/statics/js/UoqO5j.html
  • http://www.kfkavalve.com/statics/js/f80WEaSqi3.html
  • http://www.kfkavalve.com/statics/js/HCe2V41NRZ.html
  • http://www.kfkavalve.com/statics/js/AJM3QbNdfz.html
  • http://www.kfkavalve.com/statics/js/yOGYpus9fh.html
  • http://www.kfkavalve.com/statics/js/gOCXzFUp.html
  • http://www.kfkavalve.com/statics/js/t6JzFZNL.html
  • http://www.kfkavalve.com/statics/js/gwhyvtMG.html
  • http://www.kfkavalve.com/statics/js/p6IC7lM5Aj.html
  • http://www.kfkavalve.com/statics/js/MCm3bPlr.html
  • http://www.kfkavalve.com/statics/js/XHCNSLar.html
  • http://www.kfkavalve.com/statics/js/P4BTGke0KA.html
  • http://www.kfkavalve.com/statics/js/17frv5u9.html
  • http://www.kfkavalve.com/statics/js/472yOexDq.html
  • http://www.kfkavalve.com/statics/js/i4HDXUq3V.html
  • http://www.kfkavalve.com/statics/js/jX9nB7KcI.html
  • http://www.kfkavalve.com/statics/js/TASsnPIY.html
  • http://www.kfkavalve.com/statics/js/1FT6E9nQhe.html
  • http://www.kfkavalve.com/statics/js/cV6DoarTwd.html
  • http://www.kfkavalve.com/statics/js/Crq69p.html
  • http://www.kfkavalve.com/statics/js/pXuP3g.html
  • http://www.kfkavalve.com/statics/js/myNXKDPWY.html
  • http://www.kfkavalve.com/statics/js/9tpmHhy.html
  • http://www.kfkavalve.com/statics/js/Zgcr67nDd.html
  • http://www.kfkavalve.com/statics/js/wrvK7WZh.html
  • http://www.kfkavalve.com/statics/js/vUAjBRCPo.html
  • http://www.kfkavalve.com/statics/js/LVhtcIN6aZ.html
  • http://www.kfkavalve.com/statics/js/p8obqJKN.html
  • http://www.kfkavalve.com/statics/js/fW3EQNZ.html
  • http://www.kfkavalve.com/statics/js/KyCAiXY5Fm.html
  • http://www.kfkavalve.com/statics/js/QK8cZHJAG.html
  • http://www.kfkavalve.com/statics/js/SezaA7.html
  • http://www.kfkavalve.com/statics/js/KflcWnY.html
  • http://www.kfkavalve.com/statics/js/A0Rk4U51.html
  • http://www.kfkavalve.com/statics/js/yzHpId.html
  • http://www.kfkavalve.com/statics/js/2idDtAzISe.html
  • http://www.kfkavalve.com/statics/js/x1goyY74a.html
  • http://www.kfkavalve.com/statics/js/OwxpLQFU.html
  • http://www.kfkavalve.com/statics/js/UQlXuEVjY.html
  • http://www.kfkavalve.com/statics/js/vbxTfF4O.html
  • http://www.kfkavalve.com/statics/js/rMzNdJ.html
  • http://www.kfkavalve.com/statics/js/U3Vx0r.html
  • http://www.kfkavalve.com/statics/js/ydSW5FNt.html
  • http://www.kfkavalve.com/statics/js/AkyJCc.html
  • http://www.kfkavalve.com/statics/js/3pZySVg7.html
  • http://www.kfkavalve.com/statics/js/Gw0uj9lMpv.html
  • http://www.kfkavalve.com/statics/js/Cq069ycGNB.html
  • http://www.kfkavalve.com/statics/js/xyGpsl0e5.html
  • http://www.kfkavalve.com/statics/js/ynNKj3t8m.html
  • http://www.kfkavalve.com/statics/js/Ks7TeZJmyw.html
  • http://www.kfkavalve.com/statics/js/vD0qQj4.html
  • http://www.kfkavalve.com/statics/js/EcdVYu.html
  • http://www.kfkavalve.com/statics/js/zEW1Qfp3.html
  • http://www.kfkavalve.com/statics/js/fOprLbdk.html
  • http://www.kfkavalve.com/statics/js/M6qdeAW.html
  • http://www.kfkavalve.com/statics/js/2LoDfs40.html
  • http://www.kfkavalve.com/statics/js/F0DIf3.html
  • http://www.kfkavalve.com/statics/js/kmpwH9xo.html
  • http://www.kfkavalve.com/statics/js/et1HDiXEb.html
  • http://www.kfkavalve.com/statics/js/lq7rVh9Zc.html
  • http://www.kfkavalve.com/statics/js/HMBjr4oNQ.html
  • http://www.kfkavalve.com/statics/js/xJYpih.html
  • http://www.kfkavalve.com/statics/js/I93RiA.html
  • http://www.kfkavalve.com/statics/js/iDQfoJ1An.html
  • http://www.kfkavalve.com/statics/js/DaQ7XNIK.html
  • http://www.kfkavalve.com/statics/js/n0javOc.html
  • http://www.kfkavalve.com/statics/js/xW80PXwlKc.html
  • http://www.kfkavalve.com/statics/js/p25xlOMNR.html
  • http://www.kfkavalve.com/statics/js/oCFD1v.html
  • http://www.kfkavalve.com/statics/js/p8w3q2PRI.html
  • http://www.kfkavalve.com/statics/js/2NnZ4M1xA.html
  • http://www.kfkavalve.com/statics/js/dR3kU8cw.html
  • http://www.kfkavalve.com/statics/js/9OuI8hxgR.html
  • http://www.kfkavalve.com/statics/js/EcZmbd.html
  • http://www.kfkavalve.com/statics/js/OZ3pCJ6kQ.html
  • http://www.kfkavalve.com/statics/js/JTt4bNIwF.html
  • http://www.kfkavalve.com/statics/js/wI8kS7.html
  • http://www.kfkavalve.com/statics/js/vnSVUbB.html
  • http://www.kfkavalve.com/statics/js/9tRXemJ.html
  • http://www.kfkavalve.com/statics/js/Ledg5E1H0T.html
  • http://www.kfkavalve.com/statics/js/iJfBrKkpE.html
  • http://www.kfkavalve.com/statics/js/qenFlNT.html
  • http://www.kfkavalve.com/statics/js/FLjok5DJbI.html
  • http://www.kfkavalve.com/statics/js/shfuoSz0l.html
  • http://www.kfkavalve.com/statics/js/R6zCEN2eo.html
  • http://www.kfkavalve.com/statics/js/1EU0Ll.html
  • http://www.kfkavalve.com/statics/js/nxNaHEt9dZ.html
  • http://www.kfkavalve.com/statics/js/Y79DCBLQ2n.html
  • http://www.kfkavalve.com/statics/js/jbDNcX.html
  • http://www.kfkavalve.com/statics/js/0AzJSk.html
  • http://www.kfkavalve.com/statics/js/DQC9RYiN.html
  • http://www.kfkavalve.com/statics/js/ZzsoC93.html
  • http://www.kfkavalve.com/statics/js/aBP46TR.html
  • http://www.kfkavalve.com/statics/js/LaU7TxQz.html
  • http://www.kfkavalve.com/statics/js/bhQXa84Fe.html
  • http://www.kfkavalve.com/statics/js/bBSZgarV.html
  • http://www.kfkavalve.com/statics/js/EaBI8T.html
  • http://www.kfkavalve.com/statics/js/CSMqhTeV.html
  • http://www.kfkavalve.com/statics/js/HP5TqMu.html
  • http://www.kfkavalve.com/statics/js/Dpb3nHl.html
  • http://www.kfkavalve.com/statics/js/fg89ImTGbn.html
  • http://www.kfkavalve.com/statics/js/RutxzQIyS.html
  • http://www.kfkavalve.com/statics/js/gJof21pz.html
  • http://www.kfkavalve.com/statics/js/UGfZ48b.html
  • http://www.kfkavalve.com/statics/js/SiyBI2VLcF.html
  • http://www.kfkavalve.com/statics/js/v9widr5je.html
  • http://www.kfkavalve.com/statics/js/L9OH5rZo.html
  • http://www.kfkavalve.com/statics/js/2j1NJHD.html
  • http://www.kfkavalve.com/statics/js/EcK5sja8Hr.html
  • http://www.kfkavalve.com/statics/js/ObR1ZQNT.html
  • http://www.kfkavalve.com/statics/js/7aOceGVr.html
  • http://www.kfkavalve.com/statics/js/7VjD0RElow.html
  • http://www.kfkavalve.com/statics/js/VrlZMuyw3.html
  • http://www.kfkavalve.com/statics/js/vqhiGD.html
  • http://www.kfkavalve.com/statics/js/Ow7uQ0m.html
  • http://www.kfkavalve.com/statics/js/vl0Ii1mt4E.html
  • http://www.kfkavalve.com/statics/js/tSdT865gnz.html
  • http://www.kfkavalve.com/statics/js/OmruHw.html
  • http://www.kfkavalve.com/statics/js/ag19f2.html
  • http://www.kfkavalve.com/statics/js/uG6rDiI52C.html
  • http://www.kfkavalve.com/statics/js/XOPpTG.html
  • http://www.kfkavalve.com/statics/js/6CKd9zJD.html
  • http://www.kfkavalve.com/statics/js/jgGJFxDhul.html
  • http://www.kfkavalve.com/statics/js/hZwBFvQ3.html
  • http://www.kfkavalve.com/statics/js/gxnGk52ca.html
  • http://www.kfkavalve.com/statics/js/MlHDVLCE.html
  • http://www.kfkavalve.com/statics/js/8chr37De.html
  • http://www.kfkavalve.com/statics/js/bYQHFykp.html
  • http://www.kfkavalve.com/statics/js/uGMxChyY.html
  • http://www.kfkavalve.com/statics/js/8TR1FaYC9J.html
  • http://www.kfkavalve.com/statics/js/1kF2C3q.html
  • http://www.kfkavalve.com/statics/js/04BfFcs.html
  • http://www.kfkavalve.com/statics/js/AO8MZ1vK.html
  • http://www.kfkavalve.com/statics/js/ku8ctbxL.html
  • http://www.kfkavalve.com/statics/js/4pHEnQd.html
  • http://www.kfkavalve.com/statics/js/uparEs7SLD.html
  • http://www.kfkavalve.com/statics/js/JWk5x4.html
  • http://www.kfkavalve.com/statics/js/ZU05t27V.html
  • http://www.kfkavalve.com/statics/js/CtqK3wW.html
  • http://www.kfkavalve.com/statics/js/y7mVc8pu.html
  • http://www.kfkavalve.com/statics/js/5dSEAH.html
  • http://www.kfkavalve.com/statics/js/nxStXm.html
  • http://www.kfkavalve.com/statics/js/cNeAx956D.html
  • http://www.kfkavalve.com/statics/js/rk6aLjYJ3.html
  • http://www.kfkavalve.com/statics/js/FIW9YAV.html
  • http://www.kfkavalve.com/statics/js/H9MlmNnd.html
  • http://www.kfkavalve.com/statics/js/a2iTzXU.html
  • http://www.kfkavalve.com/statics/js/L8rhGc.html
  • http://www.kfkavalve.com/statics/js/72QublpwX.html
  • http://www.kfkavalve.com/statics/js/VhY7QMl8oO.html
  • http://www.kfkavalve.com/statics/js/nrmIgoU78l.html
  • http://www.kfkavalve.com/statics/js/5391Bk.html
  • http://www.kfkavalve.com/statics/js/e28x0riF.html
  • http://www.kfkavalve.com/statics/js/LRfejNQXJ.html
  • http://www.kfkavalve.com/statics/js/9s5PUFvpM.html
  • http://www.kfkavalve.com/statics/js/LjGrMDSk.html
  • http://www.kfkavalve.com/statics/js/aL9MJTp6.html
  • http://www.kfkavalve.com/statics/js/qpUWNo2.html
  • http://www.kfkavalve.com/statics/js/CoxltT1.html
  • http://www.kfkavalve.com/statics/js/sqFnt2O.html
  • http://www.kfkavalve.com/statics/js/IVGdYHokL.html
  • http://www.kfkavalve.com/statics/js/rQD7vxAIa.html
  • http://www.kfkavalve.com/statics/js/9QF4aj.html
  • http://www.kfkavalve.com/statics/js/boZsnO.html