高压减压阀压力特性偏差
时间:2015-09-04 阅读:416
【高压减压阀】主要技术参数和性能指标
上海申弘阀门有限公司主营阀门有:减压阀(气体减压阀,可调式减压阀,波纹管减压阀,活塞式减压阀,蒸汽减压阀,先导式减压阀,空气减压阀,氮气减压阀,水用减压阀,自力式减压阀,比例减压阀)、
公称压力(Mpa) | 1.6 | 2.5 | 4.0 | 6.4 | 10.0 | 16.0 |
壳体试验压力(Mpa)* | 2.4 | 3.75 | 6.0 | 9.6 | 15.0 | 24 |
密封试验压力(Mpa) | 1.6 | 2.5 | 4.0 | 6.4 | 10.0 | 16.0 |
zui高进口压力(Mpa) | 1.6 | 2.5 | 4.0 | 6.4 | 10.0 | 16.0 |
出口压力范围(Mpa) | 0.1-1.0 | 0.1-1.6 | 0.1-2.5 | 0.5-3.5 | 0.5-3.5 | 0.5-4.5 |
压力特性偏差(Mpa)△P2P | GB12246-1989 | |||||
流量特性偏差(Mpa)P2G | GB12246-1989 | |||||
zui小压差(Mpa) | 0.15 | 0.15 | 0.2 | 0.4 | 0.8 | 1.0 |
渗漏量 | X/F(聚四氟乙稀/橡胶):O Y(硬密封):GB12245-1989 |
*:壳体试验不包括膜片、顶盖
【高压减压阀】流量系数(Cv)
DN | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 500 |
Cv | 1 | 2.5 | 4 | 6.5 | 9 | 16 | 25 | 36 | 64 | 100 | 140 | 250 | 400 | 570 | 780 | 1020 | 1500 |
在截止阀管件行业中,根据公称压力PN的大小,我们可以把公称压力小于等于1.6MPa的阀门为低压阀门,公称压力为2.5MPa、4.0MPa、6.4MPa的阀门为中压阀门,同时我们也经常会提到1.6MPa压力、2.5MPa压力和多少公斤压力、多少个标准大气压等之类的术语,那么1MPa压力到底有多大压强,1MPa压力等于多少公斤压力呢蒸汽压力为2.5㎏是表示2.5kg/cm2,是表示的单位面积上的压力--压强,通常俗称为2.5kg压力。新的表示方法约为0.25MPa。
换算关系:1kg/cm2=0.098MPa,因此压力2.5kg/cm2=0.245MP,可约等于0.25MPa.ISO标准帕斯卡(1Pa=1N/m2)
1公斤力/平方厘米=98.0665千帕
粗算时常按1公斤力=10N 则:
1公斤力/平方厘米=100千帕=1bar=0.1MPa
10公斤力/平方厘米=1000千帕=1MPa
公斤的单位是质量单位
MPA是压力的单位
质量m=压力/重力加速度
压力p=压力/面积
这是他们之间的关系
1公斤压力指的是1公斤重的物体作用为1cm2面积上所产生的压强,可以想像一下,1公斤重(比两瓶一元钱的康师傅矿泉水重略轻)的物体全部压在一个手指头上所产生的压强。 我们来计算一下, 1MPa=1×106Pa 1Pa=1N/1m2 1MPa=106N/m2=106N/104cm2=100N/cm2 重力加速度g约等于9.8 N/KG,为方便计算,g按整数10。 1KG的物体重力=1KG×10N/KG=10N 1公斤压力是1KG的重力作用于1cm2面积上产生的压强,即 1公斤压力=10N/cm2 1MPa=100N/cm2=10×10N/cm2 即1MPa压力等于10公斤压力。
单位说明: Pa,压强单位,中文名称为“帕斯卡”,简称“帕”,即牛/平方米,1帕=1牛/平方米 M,数量单位,M即million,数值为一百万 N,物理力学单位,简称牛,是一种衡量力的大小的单位,两个鸡蛋的重力约为1N(0.1千克的物体的重量) m,长度单位,米 m2,面积单位,平方米 cm2,面积单位,平方厘米 KG,重量单位,千克,公斤
减压阀标准一览表
标准编号 标准中文名称 标准英文名称 JB/T10367-2002 液压减压阀 GB/T12245-1989 减压阀性能试验方法 Methods of performance test for pressure reducing valves GB/T12246-1989 先导式减压阀 Pilot-operated reducing valves GB/T12244-1989 减压阀一般要求 General specification for pressure reducing valves GB/T1852-1993 船用法兰铸钢蒸汽减压阀 Marine steel flanged steam pressure reducing valves GB10868-1989 电站减温减压阀技术条件 Specification of the steam converting valve for fossil power stations JB/T7376-1994(2005复审) 气动空气减压阀 技术条件 JB/T7310-1994(2005复审) 装载机用减压阀式先导阀 JB/T53361-1994 液压减压阀产品质量分等(试行) JB/T53265-1999 先导式减压阀 产品质量分等 JB/T2205-2000 减压阀结构长度 NF P43-035-2000 建筑阀门.供水减压阀和复合供水减压阀.要求和试验 (Building valves - Water pressure reducing valves and combination water pressure reducing valves - Requirements and tests.) NF A84-420-1991 气焊设备和有关方法.减压阀入品接头.尺寸 (Equipment for gas welding and allied processes. Pressure regulators inlet connections. Dimensions.) NF M88-773-1981 商用丁烷容器装置.低压固定调节的家用商品丁烷减压阀 (INSTALLATIONS BURNING COMMERCIAL BUTANE. PRESSURE REGULATOR TRIP,LOW-PRESSURE FIXED FLOW,FOR COMMERCIAL BUTANE FOR DOMESTIC USE.) NF M88-775-1990 装液态碳氢化合物的钢瓶.可移动部分和半移动部分用高压可调减压阀.功能.标记、试验 (LIQUEFIED HYDROCARBONS SYSTEMS IN CYLINDERS. FIXED ADJUSTEMENT,HIGH PRESSURE REGULATOR FOR AND SEMI- PREMISES. CONSTRUCTION. OPERATION, MARKING,TESTS.) NF M88-737-2003 可运输可再填充液化石油气瓶用减压阀 (Pressure relief valves for transportable refillable cylinders for Liquefied Petroleum Gas (LPG).) NF E48-423-2001 液压传动.减压阀、顺序阀、卸载阀、 节流阀和止回阀.装配面 (Hydraulic fluid power - Pressure-reducing valves, sequence valves, unloading valves, throttle valves and check valves - Mounting surfaces.) ANSI/ASSE 1003-1995 家用供水系统用减压阀 (Water Pressure Reducing Valves for Domestic Water Supply Systems) ANSI/ASSE 1046-1990 热膨胀减压阀 (Thermal Expansion Relief Valve) ANSI Z 21.22a-1999 减压阀和真空减压阀 (Pressure Relief Valves and Vacuum Relief Valves) ANSI Z 21.22b-2001 热水供应系统的减压阀 (Relief Valves for Hot Water Supply Systems (same as CSA 4.4b)) ANSI/ASTM F 1508-1997 用于蒸汽、气体和液体设备的角型减压阀规范 (Specification for Angle Style, Pressure Relief Valves for Steam, Gas, and Liquid Services) ASME A112.4.1-1993 热水器减压阀排水管 (Water heater relief valve drain tubes) ASME PTC 25.3-1988 安全和减压阀 (Safety and relief valves)
ASTM E 1008-2003 地热和其它高温液体设备用减压阀体的安装、检验及维修用标准实施规范 (Standard Practice for Installation, Inspection, and Maintenance of Valve-body Pressure-relief Methods for Geothermal and Other High-Temperature Liquid Applications) 标准编号 标准中文名称 标准英文名称 ASTM F 1795-2000 空气或氮气系统用减压阀标准规范 (Standard Specification for Pressure-Reducing Valves for Air or Nitrogen Systems) ASTM F 1565-2000 蒸汽设备用减压阀标准规范 (Standard Specification for Pressure-Reducing Valves for Steam Service) ASTM F 1508-1996 用于蒸汽、气体和液体设备的角型减压阀标准规范 (Standard Specification for Angle Style, Pressure Relief Valves for Steam, Gas and Liquid Services) ASTM F 1370-1992 船上给水系统用减压阀 (Standard Specification for Pressure-Reducing Valves for Water Systems, Shipboard) BS EN 1567-2000 建筑物阀门.减压阀和组合减压阀.要求和试验 (Building valves - Water pressure reducing valves and combination water reducing valves - Requirements and tests) BS ISO 5781-2000 液压传动.减压阀、顺序阀、卸荷阀、节流阀和止回阀.安装面 (Hydraulic fluid power - Pressure reducing valves, sequence valves, unloading valves, throttle valves and check valves - Mounting surfaces) BS ISO 6264-1998 液压传动.减压阀.装配面 (Hydraulic fluid power - Pressure-relief valves - Mounting surfaces) prEN 14071-2000 液化石油气(LPG)罐的减压阀 辅助设备 Pressure relief valves for LPG tanks - Ancillary equipment BS 6283-2-1991 热水系统中使用的安全和控制装置.压力范围从1bar到10bar温度减压阀规范 (Safety and control devices for use in hot water systems - Specifications for temperature relief valves for pressures from 1 bar to 10 bar) BS 6283-4-1991 热水系统中使用的安全和控制装置.第 4部分:zui大供给压力为12bar,标准尺寸包括DN50的微量绷紧减压阀规范 (Safety and control devices for use in hot water systems - Specification for drop-tight pressure reducing valves of nominal size up to and including DN 50 for supply pressures up to and including 12 ba) DIN EN 13953-2003 液化石油气(LPG)用可运输的可再充式储气瓶的减压阀 (Pressure relief valves for transportable refillable cylinders for Liquefied Petroleum Gas (LPG); German version EN 13953:2003) DIN EN 1567-2000 建筑阀门.水减压阀和组合水减压阀.要求和试验 (Building valves - Water pressure reducing valves and combination water pressure reducing valves - Requirements and tests; German version EN 1567:1999) JIS B8652-2002 比例电动液压减压阀及安全阀的试验方法 (Test methods for electro-hydraulic proportional pressure relief valves and electro-hydraulic proportional pressure reducing and relieving valves) JIS F0504-1989 船上机械装置用减压阀的应用和压力调节 (Application and setting pressure of relief valves for ships' machinery) UL 1478-1995 消防泵减压阀 (Fire pumps relief valves ) UL 1468-1995 防火设备用直接控制的减压阀和压力(Direct acting pressure reducing and pressure
控制阀 restricting valves ) JIS B8666-2001 液压动力.减压阀.安装表面 (Hydraulic fluid power -- Pressure-relief valves -- Mounting surfaces) JIS B8372-1994 气动装置用减压阀 (PRESSURE REDUCING VALVES FOR PNEUMATIC USE) JIS B8664-2001 液压动力.压力控制阀(不包括减压 阀)、顺序活门、释荷阀、节流阀和止回阀.安装表面 (Hydraulic fluid power -- Pressure-control valves (excluding pressure-relief valves), sequence valves, unloading valves, throttle valves and check valves -- Mounting surfaces) JIS B8410 AMD 1-2003 水管用减压阀(修改件1) (Pressure reducing valves for water works (Amendment 1)) JIS B8651-2002 比例电动液压减压阀试验方法 (Test methods for electro-hydraulic proportional pressure relief valves) JIS B8410-1999 水管用减压阀 (Pressure reducing valves for water works) ISO 15500-12-2001 道路车辆.压缩天然气(CNG)燃料系统元部件.第12部分:减压阀 (Road vehicles - Compressed natural gas (CNG) fuel system components - Part 12: Pressure relief valve (PRV)) ISO 6264-1998 液压传动.减压阀.装配面 (Hydraulic fluid power - Pressure-relief valves - Mounting surfaces) ISO 5781-2000 液压传动.减压阀、顺序阀、卸荷阀、节流阀和止回阀.装配面 (Hydraulic fluid power - Pressure-reducing valves, sequence valves, unloading valves, throttle valves and check valves - Mounting surfaces) GB/T10868-2005 电站减温减压阀
【高压减压阀】主要零件材料