调节阀泄漏量测试标准模板

1、资料内容仅供您学习参考，如有不当或者侵权，请联系改正或者删除。4LEAKAGE SPECIFICAITONS AND CLASSES泄漏等级和相关规定4.1The maximum allowable seat leakage as specified for each class shall not exceed the set leakage in Table 1 using the test procedure as defined in Section 5. For Classes II through VI , each and every valve shall be tested

2、.在表 1 中给出不同的泄漏等级的最大泄漏量, 并按第五部分所要求的测试程序去测试。要达到等级2 到等级 6 中的任一等级 , 每一个阀都必须测试。4.2 Leakage Classes泄漏等级4.2.1 Class I . A modification of any Class II ,III or IV valve where design intent is the same as the basic class , but by agreement between user and supplier , no test is required .一级密封是根据等级二, 三 , 四 来设

3、计制造的, 可是供方和用户已达成协议不需要测试。4.2.2 Class II . This class establishes the maximum permissible leakage generally associated with commercial double port , double seat control valves or balanced single port control valves with a piston ring seal and metal to metal seats . Use test procedure Type A.二级密封主要是针对工

4、业双通双座控制阀或平衡型单通控制阀那些带有活塞O 型圈密封和金属对金属阀座密封。使用 A 类测试资料内容仅供您学习参考，如有不当或者侵权，请联系改正或者删除。程序。4.2.3 Class III This class establishes the maximum permissible leakage generally associated with Class II (4.2.2) , but a higher degree of seat and seal tightness . Use test procedure Type A.三级密封主要是针对那些阀座和密封硬度更高的二级密封所规

5、定的相关的阀。规定了最大允许的最大泄漏量。使用A 类测试程序。4.2.4 Class IV This class establishes the maximum permissible leakage generally associated with commercial unbalanced single-port , single-seat control valves and balanced single-port control valves with extra tight piston rings or other sealing means and metal to meta

6、l seats. Use test procedure Type A .四级密封主要是针对工业非平衡单孔单座控制阀和平衡型单孔控制阀带有紧固型活塞式密封圈或其它密封形式和金属密封,规定了最大允许泄漏量。使用A 类测试程序。4.2.5 Class V This class is usually specified for criticalapplicationswhere the control valve may be required to be closed , withoutablocking valve , for long period of time with high diffe

7、rential pressureacross the seating surfaces . It requires special manufacturing assembly and testing techniques . This class is generally associated with metal seat unbalanced single-port , single seat control valves or balanced single port designs with exceptional seat and seal tightness . Use test

8、 procedure资料内容仅供您学习参考，如有不当或者侵权，请联系改正或者删除。Type B using water at the maximum operating differential pressure.五级密封主要是针对那些临界设备, 不带截止阀, 而控制阀要长期关闭 , 并有高速介质流过阀座表面。此类阀要求特殊的加工安装和测试技术。相关的控制阀有非平衡型单孔单座控制阀或平衡型单孔设计阀而且阀座和密封需要额外的硬化处理。使用测试程序B 。测试介质为水 , 而且在最大的操作压差测试。4.2.6 Class VI This class establishes the maximum p

9、ermissible seat leakage generally associated with resilient seating control valves either unbalanced or balanced single port with O rings or similar gapless seals . Use test procedure Type C .六级密封此等级规定了非平衡型或平衡型单孔带O 形圈或相似无缝软阀座密封的控制阀的最大允许阀座泄漏量。使用 C 类测试程序Leakage Class泄漏等级Class I 一级( See 4.2.1)Class II

10、二级( See 4.2.2 )Class III三级( See 4.2.3 )Class IV 四级( See 4.2.4)Class V五级( See 4.2.5 )Table 1 表一Maximum Seat LeakageTest Procedure最大阀座泄漏量测试程序See Paragraph 4.2.1None见 4.2.1 部份没有0.5% of rated valve capacityType A0.5% 的额定流量( See 5.1)0.1% of rated valve capacityType A0.1% 的额定流量( See 5.1)0.01% of rated val

11、ve capacityType A0.01%的额定流量( See 5.1)5*10 -4ml per minute of water per mmType Bof orifice diameter per bar differential( See 5.2)资料内容仅供您学习参考，如有不当或者侵权，请联系改正或者删除。5*10 -4 毫升 /分钟 /mm/barClass VI 六级Leakage per Paragraph 5.3.4 as expressedType C( See 4.2.6)in ml per minute versus port diameter( See 5.3)参照

12、表 2 中的数据5. TEST PRPCEDURES测试程序5.1 Test Procedure Type A 测试程序A5.1.1Test medium shall be clean air or water at 10-52C (50-125F)测试介质为 10-52 度干净的的空气或水。5.1.2Pressure of test medium shall be 3-4 bar (45-60psig ) orthemaximum operating differential pressure whichever is less .测试压力为 3-4bar 或最大操作压差 , 两者取其小者。

13、5.1.3Leakage flow and pressure data shall be accurate to 10 percentof reading .泄漏量读数和压力读数的误差范围应为10 %。5.1.4The test fluid shall be applied to the normal or specified valvebody inlet . The valve body outlet may be open to atmosphere orconnected to a low headless measuring device .测试介质作用在阀的进口。阀出口与大气相通或

14、与一些低压的设备相连。5.1.5The actuator shall be adjusted to meet the operating conditionsspecified . The full normal closing thrust as applied byairpressure , a spring or other means shall then be applied . Noallowance or adjustment shall be made to compensate for any资料内容仅供您学习参考，如有不当或者侵权，请联系改正或者删除。increase in

15、 seat load obtained when the test differential is lessthan the maximum valve operating differential pressure .执行器应当调整到规定的操作条件。经过气压, 弹簧或其它方法提供使阀正常全关的推力, 当测试压差小于阀的最大操作压差时 , 不允许经过调整来补偿阀座负载。5.1.5 On valve body assemblies made of stock ,tested without the actuator , a test fixture should be utilized whic

16、h applies a net seatload not exceeding the manufacturer normals expected load under maximum service conditions .作为库存阀体组件, 没有执行器情况下进行测试, 使用测试架为阀座加载 , 但不应超出正常的最大负载。5.1.7On water test , care shall be taken to eliminate air pockets in the valve body and piping .在进行水压测试时, 应当注意排除阀体内和管道内的气泡。5.1.8The leakag

17、e rate thus obtained can then be compared to thecalculated values for Classes II, III and IV . Table 1.测试的得到的泄漏率, 和表一中等级II, III and IV的数据相比较, 是否达到相应的泄漏等级要求。5.2Test Procedure Type B测试程序B5.2.1Test fluid shall be clean water at 10-52C( 50-125F)资料内容仅供您学习参考，如有不当或者侵权，请联系改正或者删除。使用干净的10-52 度的水进行测试。5.2.2The

18、water test differential pressure shall be the maximum service pressure drop across the valve plug, not exceeding the maximum operating pressure at room temperature as determined by ANSI B16.1, B16.5, or B16.34 , or some lesser pressure by individual agreement (7 bar (100psi) pressure drop minimum ).

19、 Pressure measurement accuracy is to be in accordance with Paragraph 5.1.3测试压差应当是阀工作时在阀芯处的最大压降。但不超出ANSI B16.1, B16.5, or B16.34 规定的在室温的情况下最大的操作压力。同时也不应小于单独的规定的压力( 最小压降7bar) . 压力测量误差范围在10 %。5.2.3The test fluid shall be applied to the normal or specified inlet of the valve body . The valve plug shall

20、be opened and the valve body assembly dilled completely with water , including outlet portion and any downstream connecting piping , and then stroked closed .测试流体连接阀体的进口。先把阀打开 , 向内注水 , 使得阀出口部分和下游管路充满水 , 然后把阀关闭。5.2.4The water test differential pressure as specified in 5.2.2 is then applied with the actuator adjusted to meet the operating资料内容仅供您学习参考，如有不当或者侵权，请联系改正或者删除。conditions specified . The net actuator thrust shall be the specified maximum . Net actuator thrust shall be the specified maximum . Net ac