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真空炉抽气时间是怎么计算的

  • 发布日期:2019-12-18      浏览次数:975
    • ZHENKONGLUZHENKONGXITONGDEPEIZHIHECHOUQISUDUSHIYOUYIDINGFEIBIAOZHUNHEJISUANFANGFADE,GENJUZHENKONGXITONGDESHIYONGMUDEERJUEDINGSUOXUDEZHENKONGDUHECHOUQISHIJIAN,RANHOUXUANZEHESHIDEZHENKONGBENG。BENJIEJIESHAOBUTONGZHENKONGFANWEINEIDECHOUQISHIJIANJISUAN。

      1、大气压-低真空领域的抽气时间计算

        ZHEILISUOZHIDEDIZHENKONGLINGYU,SHIZHIZHENKONGDUZAI100 KPaZHI0.2 KPa,DIZHENKONGLINGYUZHENKONGQIANGTIHEBENGDELIANJIEGUANNEI,QITIFENZISHINIANXINGLIUSHI,CHOUQISHIJIANKEYITONGGUOCHUQIYAQIANGp1、DAODAYAQIANGp2、CHOUQISUDUSHERONGJIV(HANPEIGUAN)LAIJISUAN。

      大气压-低真空领域的抽气时间计算

        SHIZHONG p1———CHUQIYAQIANG(DAQIYA)[Pa];

        p2———DAODAYAQIANG[Pa];

        t———CHOUQISHIJIAN[min];

        V———RONGJI[L];

        Se———SHIJICHOUQISUDU[L/min]。

        KAOLVDAODAOGUANHEFAMENDEPINGJINGXIAOYING,SHIJICHOUQISUDUDAZHIKEYIGUSUANWEILILUNCHOUQISUDUDE80%。

      2、中真空领域的抽气时间计算

        ZHEILISUOZHIDEGAOZHENKONGZHICHAOGAOZHENKONGLINGYU,SHIZHIZHENKONGDUZAI200 Pa ZHI 0.2PaZHIJIAN,ZHONGZHENKONGLINGYUDAOGUANNEIDEQITIFENZI,CHUYUNIANXINGLIUHEFENZILIUDEZHONGJIANZHUANGTAI,BUNENGDANCHUNDIXIANGDIZHENKONGHUOXIAMIANDISANZHANGJIEJIANGJIEDEGAOZHENKONGNEIYANGJIANDANDIJISUAN。YIBANQINGKUANGXIA,TONGGUOLIANGZHONGFANGSHIFENBIEJISUANCHOUQISHIJIAN,RANHOUQUJISUANZHIJIAODADEJIEGUO。

        ZHENKONGCHOUQIYAOKAOLVDEYAOSU:

        (1)DAODAZHENKONGDU;

        (2)CHOUQISUDU;

        (3)DAOTONGLV;

        (4)SHIJICHOUQISUDU;

        (5)QITIFANGCHULV;

        (6)LOULV。

        YONGZHENKONGBENGDUIZHENKONGQIANGTICHOUQISHI,CHUQIANGTINEIDEYAQIANGXUNSUJIANGDI,DANSHIJINGGUOYIDUANSHIJIANHOUYAQIANGXIAJIANGBIANHUAN,BINGQIEQUYUYIGEHENGDINGZHI。DAOZHIZHEIZHONGXIANXIANGDEZHUYAOYUANYINSHICAILIAODEBIAOMIANFANGQI。RUTU1SUOSHI,YAQIANGBIANHUADEBUTONGLINGYU,FENBIECHENGZHIWEIKONGJIANCHOUQIHEBIAOMIANCHOUQI。WEILEJINYIBUTIGAOZHENKONGDU,TONGCHANGCAIYONGDEDUICERUXIA:

      压强和排气时间的关系

      TU1  YAQIANGHECHOUQISHIJIANDEGUANXI

        (1)XUANZEBIAOMIANFANGCHUQITISHAODECAILIAO;

        (2)TONGGUODIANJIEPAOGUANGDENGSHOUDUAN,JIANXIAOCAILIAOBIAOMIANJI,JIERJIANSHAOQITIFENZIDEXIFU

         (3)DUIQIANGTIJINXINGHONGKAO,CUJINBIAOMIANXIFUQITIDEFANGCHU。

      3、高真空-超高真空领域的抽气时间计算

        ZHEILISUOZHIDEGAOZHENKONGZHICHAOGAOZHENKONGLINGYU,SHIZHIZHENKONGDUZAI0.2PaYIXIA,DUIYUGAOZHENKONGLINGYU,YAOCHONGFENKAOLVRONGQIBIYIJIRONGQINEIWUTIDEQITIFANGCHU,YINCI,CHOUQISHIJIANHECHOUQISUDUDEJISUANFANGFAHEDIZHENKONGLINGYUBUTONG。

      高真空-超高真空领域的抽气时间计算

        SHIZHONG p(t)———DAODAYAQIANG;

        Se———SHIJICHOUQISUDU;

        Ql———QIANGTILOUQILIANG;

        Qg(t)———QIANGTINEIBUFANGCHUQITILIANG;

        p0———CHUQIYAQIANG。

        QITIDEFANGCHULIANGQg(t)SUIZHESHIJIANtERJIANSHAO。JISUANKAISHISHI,JIADINGYIGECHOUQISHIJIAN,GENJUDANGSHIDEFANGQILIANGLAIQIUDEDAODADEZHENKONGDU。RUGUOJISUANJIEGUOp(t)HESUOXUDEZHENKONGDUBUYIZHI,ZEZHONGXINJIADINGSHIJIAN,GENJUXINJIASHESHIJIANDEQITIFANGCHULIANGZAICIJISUAN。BUDUANZHONGFU,ZHONGRANGp(t)ZAISUOXUDEZHENKONGFANWEINEI。

        GAOZHENKONGLINGYUDECHOUQISHIJIANJISUANYUANBIDIZHENKONGLINGYUFUZA。ZHENKONGQIANGTIDENEIBIAOMIANJINGGUOJIUJINGQINGXIHE150~200℃HONGKAOCHULIDELIANGZHONGQINGKUANGXIA,HOUZHEDEQITIFANGCHUHUIJIANSHAO10%ZUOYOU,YINCISHIYONGTONGYANGDECHOUQIBENGSUONENGDAODADEZHENKONGDUYEHUIGENGGAOYIXIE。

        ZHENKONGQIANGTINEIDEBUJIANXINGZHUANGHECAIZHIYEJIDADIYINGXIANGDAODADEZHENKONGDUHECHOUQISHIJIAN。RUGUOSHIYONGLESHUZHILEICAILIAO,ZEDAODADEZHENKONGDUHUIBIDANCHUNKAOLVJINSHUBIAOMIANDEQITIFANGCHUYAOCHA2~3GESHULIANGJI。NEIBUSHIYONGLUODINGSHI,LUOWENBUCANLIUDEQITISUIZHECHOUQISHIJIANHUANMANFANGCHU。WEILEJIASULUOWENBUDEQITIFANGCHU,YAOZAILUODINGZHONGXINCHUANKONG,HUOZAILUOWENCEMIANKAIYIGECHUQIKONG(TU2)。YINCI,NEIBUGOUZAOYUEFUZA,YINGXIANGZHENKONGDEYINSUJIUYUEDUO,YAOHUODEGAOZHENKONG,SHEJISHANGJIUGENGXUYAOJINGYAN。

      螺纹部的排气示意图

      TU2 LUOWENBUDECHOUQISHIYITU