锅炉排污 气动截止阀J11H
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联系方式
欧拉姆阀门科技有限公司
- 服务热线:0577-67999989
- 图文传真:0577-67999178
- 企业邮箱:sales@oulam.cn
- 公司地址:浙江省温州市永嘉县瓯北街道和一工业区
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- 请求信息 : 2022-07-01 21:41:53 HTTP/1.1 GET : http://www.oulam.cn/product/globe_valve/002-000028.html
- 运行时间 : 0.468848s [ 吞吐率:2.13req/s ] 内存消耗:5,786.33kb 文件加载:242
- 查询信息 : 232 queries
- 缓存信息 : 0 reads,1 writes
- 会话信息 : SESSION_ID=41949484c5c2d5e4a639b91a6ac25b60
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锅炉排污是定期排出锅炉内部分被盐质和水渣污染的锅水。广泛应用于传统的冶金、新型煤化工、大型氮肥、专业气体供应等领域。进入汽包的给水总是含有一定量的盐。在锅炉中加药后,锅炉水中的结垢物质转化为水渣。另外,当锅炉水腐蚀金属时,会产生一些腐蚀产物。因此,锅炉水中有各种可溶和不可溶的杂质。在锅炉运行中,这些杂质中只有少数被蒸汽带走,大部分留在锅炉水中。随着锅炉水的不断蒸发,这些杂质的浓度逐渐增加。欧拉姆阀门的气动截止阀具有复合材料超强抗腐,减弱介质冲击。
气动截止阀结构比闸阀简单,制造维修更方便。气动截止阀密封面不易磨损划伤,密封性能好。阀盘与阀体密封面在启闭过程中没有相对滑动,因此磨损和擦伤不严重,密封性能好,使用寿命长。气动截止阀启闭时阀瓣行程小,所以截止阀的高度比闸阀小,但结构长度比闸阀长。气动截止阀启闭力矩大,启闭费力,启闭时间为主。气动截止阀流体阻力大,因为阀体内介质通道曲折,流体阻力大,功耗高。气动截止阀全开时,阀瓣经常被腐蚀。
气动截止阀通常是全开和全闭的。考虑到流量特性,截止阀和球阀具有启闭行程短、速度快、密封可靠、启闭静力矩小的特点。所以两种产品都适用。但考虑到可靠性,主流产品还是气动截止阀。气动截止阀的气缸是一种成型产品,按作用方式可分为单作用和双作用。带复位圆柱弹簧的单作用产品具有失气自动复位功能,即当失气时,气缸活塞(或隔膜)在弹簧的作用下,带动气缸推杆回到气缸的原始位置(行程的原始位置)。双作用气缸无回位弹簧,推杆进退靠改变气缸气源进出口位置。当空气从活塞的上腔进入时,推杆向下移动。当空气从活塞下腔进入时,推杆向上移动。由于没有回位弹簧,双作用缸比同直径的单作用缸推力大,但没有自动回位功能。
结构比闸阀简单,制造与维修都较方便。密封面不易磨损及擦伤,密封性好,启闭时阀瓣与阀体密封面之间无相对滑动,因而磨损与擦伤均不严重,密封性能好,使用寿命长。
截止阀的阀杆轴线与阀座密封面垂直。阀杆开启或关闭行程相对较短,并具有很好的切断动作,使得这种阀门十分适合作为介质的切断或调节及节流使用。
阀瓣对焊硬质合金耐冲刷能力强。压力自密封设计,介质的压力起伏波动对密封性 能无影响。
1、设计制造按BS5352、MSS SP-118;
2、承插口尺寸按ANSI B16.11;JB/T1751
3、螺纹端尺寸按ANSI B1.20.1;JB/T7306
4、对焊端尺寸按ANSI B16.25;JB/T12224
5、法兰端尺寸按 ANSI B16.5;JB79
6、阀门检查和试验API 598; GB/T13927; JB/T9092
结构特征 螺栓连接阀盖(B.B)和明杆支架(OS & Y) 焊接阀盖(W.B)和明杆支架(OS & Y)