標(biāo)準(zhǔn)安全閥計(jì)算

,,,,安全閥計(jì)算,,,,共1頁(yè),,

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計(jì)算依據(jù),,TSGR004-2009《固定式壓力容器安全技術(shù)監(jiān)察規(guī)程》、GB150-1998《鋼制壓力容器》附錄B,,,,,,,,

安全閥計(jì)算（適用于壓縮氣體壓力容器）,,,,,,,,,,

序號(hào),名稱(chēng),,,符號(hào),計(jì)算公式或依據(jù),,單位,數(shù)值,,

一、壓力容器安全泄放量（即設(shè)備最大生產(chǎn)能力）計(jì)算,,,,,,,,,,

1,標(biāo)準(zhǔn)狀態(tài)下的氣體密度,,,ρo,《化工工藝設(shè)計(jì)手冊(cè).上冊(cè)》介質(zhì)的物性參數(shù)表,,Kg/m3,0.77,,

2,泄放壓力下的氣體密度,,,ρ,ρ=ρo×Pd/0.1,,Kg/m3,5.86,,

3,壓力容器進(jìn)口管內(nèi)徑,,,d,設(shè)計(jì)條件,,mm,73.00,,

4,進(jìn)口管內(nèi)氣體流速,,,v,,,m/s,20.00,,

5,泄放壓力下壓力容器安全泄放量,,,Ws,Ws=2.83×10-3ρvd2,,Kg/h,1767.38,,

6,二、壓力容器排放能力計(jì)算（氣體、臨界條件）,,,,,,氣體性質(zhì),0.90,,

7,容器工作壓力(表壓),,,Pw,設(shè)計(jì)條件,,Mpa,0.35,,

8,安全閥整定（開(kāi)啟）壓力,,,Pz,設(shè)計(jì)條件,,Mpa,0.50,,

9,容器設(shè)計(jì)壓力(表壓),,,P,設(shè)計(jì)條件,,Mpa,0.60,,

10,安全閥排放壓力(泄放)（絕壓）,,,Pd,Pd=P+0.1P+0.1,,MPa,0.76,,

11,安全閥額定排放系數(shù),全啟式安全閥,,K,0.6～0.7,,,0.60,,

,,微啟式安全閥,帶調(diào)節(jié)閥,,0.4～0.5,,,,,

,,,不帶調(diào)節(jié)閥,,0.25～0.35,,,,,

12,氣體定壓比熱,,,Cp,《化工工藝設(shè)計(jì)手冊(cè).上冊(cè)》介質(zhì)的物性參數(shù)表,,kJ/(kg.℃),0.53,,

13,氣體定容比熱,,,Cv,《化工工藝設(shè)計(jì)手冊(cè).上冊(cè)》介質(zhì)的物性參數(shù)表,,kJ/(kg.℃),0.40,,

14,氣體絕熱系數(shù),,空氣,k,k=Cp/Cv,,,1.29,,

,,,其它氣體,,,,,,,

15,氣體特性系數(shù),,空氣,C,《容規(guī)》附表5-1GB150-1998表B1,,,346.03,,

,,,其它氣體,,,,,,,

16,氣體摩爾質(zhì)量,,,M,《化工工藝設(shè)計(jì)手冊(cè).上冊(cè)》介質(zhì)的物性參數(shù)表,,Kg/Kmol,17.03,,

17,介質(zhì)的設(shè)計(jì)溫度,,設(shè)計(jì)溫度,t,設(shè)計(jì)條件,,℃,400.00,,

,,,臨界溫度,tl,《化工工藝設(shè)計(jì)手冊(cè).上冊(cè)》介質(zhì)的物性參數(shù)表,,,132.40,,

18,介質(zhì)的溫度（絕對(duì)）,,泄放溫度,T,T=t+273.15,,°K,673.15,,

,,,臨界溫度,TL,TL=tL+273.15,,,405.55,,

,,,對(duì)比溫度,Tr,Tr=T/TL,,,1.66,,

19,介質(zhì)的壓力（絕壓）,,泄放壓力,Pd,,,Mpa,0.76,at,

,,,臨界壓力,PL,《化工工藝設(shè)計(jì)手冊(cè).上冊(cè)》介質(zhì)的物性參數(shù)表,,Mpa,10.93,111.5,

,,,對(duì)比壓力,Pr,Pr=Pd/PL,,,0.07,,

,,,出口壓力,PO,設(shè)計(jì)條件,,Mpa,0.10,,

20,氣體在操作溫度、壓力下的壓縮系數(shù),,空氣,Z,查GB150-1998附錄B圖B1,,,0.90,,

,,,其它氣體,,,,,,,

21,介質(zhì)臨界狀態(tài)的判定,,數(shù)值1,X1,,,,0.55,,

,,,,,,,,,,,

,,,數(shù)值2,X2,PO/Pd,,,0.13,,

,,,結(jié)論,,按GB150-1998附錄B6.3.1,,,臨界條件,,

22,所需安全閥最小排氣截面積,,臨界條件,A,,,mm2,879.03,879.0298589,

,,,亞臨界條件,,,,mm2,,804.3186729,

23,三、安全閥選用及校核,,,,,,,,,

24,選用安全閥型號(hào),,,,A42Y-16CDN20,,安全閥型式,1.00,,

25,安全閥數(shù)量,,,n,設(shè)計(jì)條件,,個(gè),1.00,全啟式,微啟式

26,安全閥開(kāi)啟高度,,,h,《壓力容器設(shè)計(jì)手冊(cè)》表3-8-7P932或選型樣本,,mm,3.25,3.25,0.65

27,安全閥閥座喉徑,,,d1,《壓力容器設(shè)計(jì)手冊(cè)》表3-8-7P932或選型樣本,,mm,13.00,,

28,安全閥閥座口徑,,,D,《壓力容器設(shè)計(jì)手冊(cè)》表3-8-7P932或選型樣本,,mm,25.00,,

29,錐形密封面的半錐角,,,φ,《壓力容器設(shè)計(jì)手冊(cè)》表3-8-7P932或選型樣本,,°,0.00,,

30,安全閥排氣截面積,全啟式h≥1/4d1時(shí),,A,A=π/4×d12,,mm2,132.73,132.7322896,

,,微啟式