热力系统 不锈钢截止阀J41W
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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 : 2022-07-09 10:36:21 HTTP/1.1 GET : http://www.tgfolk.net/product/globe_valve/002-000473.html
- 运行时间 : 0.437315s [ 吞吐率:2.29req/s ] 内存消耗:5,758.64kb 文件加载:242
- 查询信息 : 231 queries
- 缓存信息 : 0 reads,1 writes
- 会话信息 : SESSION_ID=c8ecd202a601ffd11e96095522735883
- CONNECT:[ UseTime:0.000604s ] mysql:host=127.0.0.1;port=3307;dbname=www_oulam_cn;charset=utf8mb4
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热力系统是指为进行热力学分析而人为划分的对象。分析对象周围的对象统称为外部世界。系统与外界的界面称为边界。动力装置的工作是工质从高温热源吸收热能,将其一部分转化为机械能做功,将剩余部分传递给低温热源的过程。热力系统如果与外界只有热量或工作能量交换而没有物质转化,则称为闭口系统,在闭口系统中的质量保持不变;如果热力系统既有能量交换又有与外界的物质交换,则称为开口系统;欧拉姆阀门在热力系统中的能量或物质交换中起到了重要的作用,独有的防止误操作设计,双向防过关设计。
不锈钢截止阀结构比闸阀简单,制造维修更方便。不锈钢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。不锈钢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。不锈钢截止阀启闭力矩大,启闭费力,启闭时间为主。不锈钢截止阀流体阻力大,因为阀体内介质通道曲折,流体阻力大,功耗高。
不锈钢截止阀,也叫截门,是使用最广泛的一种阀门,它之所以广受欢迎,是由于开闭过程中密封面之间摩擦力小,比较耐用,开启高度不大,制造容易,维修方便,不仅适用于中 低压,而且适用于高压。 不锈钢截止阀的闭合原理是,依靠阀杠压力,使阀瓣密封面与阀座密封面紧密贴合,阻止介质流通。 不锈钢截止阀只许介质单向流动,安装时有方向性。不锈钢截止阀的结构 长度大于闸阀,同时流体阻力大,长期运行时,密封可靠性 不强。
不锈钢截止阀结构比闸阀简单,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。
不锈钢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)