幸运飞艇微信群网投平台

高真空多层绝热抽真空工艺研究现状与发展

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点击次数:1373 更新时间:2017年12月02日11:31:59 打印此页 关闭

TONGGUOFENXIYINGXIANGZHENKONGDUDEZHUYAOYINSUJIQIYINGXIANGGUILV,ZHENDUIBUTONGDEYINGXIANGYINSUTICHULEGEZIYOULIZHENKONGHUOQUHEWEICHIDEJIEJUEFANGAN,BINGJIANGGECUOSHIJUTIDIYUCHOUZHENKONGGONGYIGUOCHENGKONGZHIGEHUANJIEXIANGPIPEI,CONGERZHIDINGCHUJIAOWEIKEXUEDEXIANXINGCHOUZHENKONGGONGYILIUCHENG。TONGGUOPOUXIXIANYOUGONGYIDEJUXIANXINGHEYANJIUCHENGGUO,DUICHOUZHENKONGGONGYIDEXIANZHUANG、FAZHANQUSHITICHUJIANYI。

1、引言

幸运飞艇微信群网投平台   SUIZHEDIWENJUERECHUYUNXINGYEDEFAZHANRIQUCHENGSHU,DUIYINGXIANGDIWENJUEREZHUYUNDEGEXIANGYANJIUYEPENGBOKAIZHANQILAI。DIWENJUEREZHUYAOFENDUIJIJUERE、ZHENKONGFENMO(XIANWEI)JUERE、GAOZHENKONGDUOCENGJUEREHEGAOZHENKONGDUOPINGJUEREJIZHONGJUEREXINGSHI。QIZHONGGAOZHENKONGDUOCENGJUEREYINJUEREXINGNENGHAO、GONGYIJIANBIANHUODEQINGLAI,ZAIXIAOXINGDIWENJUERERONGQI,NAIZHIDIWENCAOCHEDENGLINGYUGUANGFANYUNYONG,BINGJUYOUZHUBUKUODAYINGYONGLINGYUDEQUSHI。

  在影响多层绝热性能的诸多因素中,真空度起到十分关键的作用。研究表明,当真空度较低即P > 10Pa时,真空度变化对热导率的影响不大;当真空度为10 - 10- 2 Pa区间,随着真空度的提高,热导率急速下降;当真空度优于10-3 Pa时,热导率趋近恒定值。因此,一般夹层的表观真空度要优于10- 2 Pa,多层绝热才能充分发挥效果,达到良好的绝热目的,如图1所示。

幸运飞艇微信群网投平台   HUOQUHAODEZHENKONGDUCHENGWEIZHIZAOYOUZHIGAOZHENKONGDUOCENGJUERERONGQIDEGUANJIANZHIYI,ZHEIJIUDUICHOUZHENKONGGONGYITICHULEKEKEDEYAOQIU。CHOUZHENKONGGUOCHENGBUJINYAOQIUDUIJIACENGJIEGOUJINEIBUGECAILIAODEWUXINGHEGONGNENGYOUQUANMIANDERENSHIHELIJIE,HAIYAOQIUQUEBAOGONGYIBENSHENDEKEXUEXINGJIWENDINGXING。FENXILEYINGXIANGZHENKONGDEZHUYAOYINSU,JIUMUQIANDECHOUZHENKONGGONGYIXIANZHUANGJINXINGLECHANSHU,TONGGUOPOUXIXIANYOUGONGYIDEJUXIANXINGHEYANJIUCHENGGUO,DUICHOUZHENKONGGONGYIDEFAZHANTICHULEXINKANFA。

影响真空的主要因素

2.1、DUOCENGJUERECAILIAO

  在高真空多层绝热系统中,多层绝热材料多采反射材料与间隔物相交替的组合方式。反射材料大多采用高反射率的镀铝薄膜等,充分利用其高反射率来减少辐射传热。而间隔物则用热导率小的材料如尼龙网、等,以增大接触热阻。同时还可将绝热材料波纹化形成多层膜。或以薄膜为基体,一面镀铝作为反射层,另一面涂以热导率小的颗粒状无机物SiO2 作为屏间隔物,以减小固体导热,以上方法从不同程度上都能提高了绝热性能。

  DUOCENGJUERECAILIAODECHANRAOHEBAOZHADUICHOUZHENKONGDEYINGXIANGSHIFENMINGXIAN。CENGSHUJIMIDUGUOSHAOBULIYUJUEREXINGNENG,DANCENGSHUJIMIDUDEZENGJIAHUIZAOCHENGCHOUZHENKONGZULIDEZENGDA,CENGJIANQITIBUYIBEICHOUZOU,YIHUIYOUYUCENGJIANZHENKONGDUBUJIAERYINGXIANGJUEREXINGNENG。CHANGYONGDECHANRAOFANGFAYOULIANGZHONG,QIYISHI“LUOXUAN”SHICHANRAOFA,QIERSHI“TONGTIZHUJIE”SHICHANRAOFA,ZHENKONGJISHUWANGCENGJINGYOUYIWENZHONGDUIDIYIZHONGFANGFAJICHULEXIANGXIMIAOSHU。WULUNCAIYONGHEZHONGFANGFA,DOUYAOQIUBAOZHAJUNYUN,BINGKONGZHILIXIANGDECENGMIDU。

  CHOUZHENKONGQIANDEDUOCENGJUERECAILIAOYINGJINXINGGUIMOHUAGANZAOCHULI。MUDESHICHUQUCAILIAOZHONGDESHUIFEN,TUOCHUCAILIAOSHENGCHANGUOCHENGZHONGFUZHEDEYOUZHI、LA、JIANDENGYINGXIANGCHOUKONGDEWUZHI,JIAKUAICAILIAOFANGQI,SUODUANJIANGLAIDECHOUKONGSHIJIAN。JIANGJINGHONGKAOFANSHECAILIAODEFANGQITEXINGYUWEIHONGKAOQIANJINXINGSHIYANBIJIAOHOU,DECHUCAILIAOJINGHONGKAOHOUGENGRONGYICHOUZHIGAOZHENKONG,TIGAOCENGJIANZHENKONGDU。

2.2、筒体漏放气

、CHOUZHENKONGGONGYIDUISHEBEIDEJIBENYAOQIU

  CHOUZHENKONGXITONGYIBANYOUCHOUKONGGONGZHUANG、CHOUKONGZHUANGZHI、ZHENKONGCELIANG、WENDUCELIANGHEKONGZHIDENGZUJIANZUCHENG。CHOUKONGZHUANGZHIYIBANBAOKUOCHOUQIGUANLU、、HUOZHENKONGJIZUDENG。ZHENKONGCELIANGZHUYAOZHIZHENKONGJI。DUIYUZHUBENGHEQIANJIBENGDEXUANPEIZHUYAOGENJUSUOXUCHOUSUHESHIJIANLAIXUANQU。CHOUZHENKONGSHEJIDEGUANLUSUOYONGCAILIAOYINGMANZUYIXIATIAOJIAN:

幸运飞艇微信群网投平台   (1)QIMIXINGHAO;

  (2)NEIBUBIAOMIANXIQILIANGJINLIANGSHAO,RUOYOUXIQIYINGYIYUCHUQI;

  (3)HUAXUEXINGNENGWENDING;

幸运飞艇微信群网投平台   (4)REWENDINGXINGHAO;

幸运飞艇微信群网投平台   (5)BIMIANNENGCHUQIDESIJIAO。

3.2、JIACENGJIARE

幸运飞艇微信群网投平台   JIAREKEYIHUOHUAXIFUJI,SHIFANGBEIXIFUJIXIFUDECANYUQITI。ZAIGAOWENXIA,QITIDEFENZIDONGNENGJIAQIANG,YOULIYUBEICHOUXI。TONGSHIGAOWENJIASULECAILIAODEFANGQISULV,WEIRIHOUZHENKONGDUDEWEICHITIGONGLEBAOZHANG。DUIJIACENGDEJIAREKETONGGUOLIANGZHONGTUJINGSHIXIAN:WAIJIAREHENEIJIAREFANGSHI。TU2ZHONGSUOXUANYONGDEWEIWAIJIAREFANGSHI。WAIJIAREFANGSHITONGCHANGZAIJUERERONGQIWAITONGTISHANGBAOGUOJIARETAN,ERNEIJIAREFANGSHIZESHIXIANGNEIRONGQINEIFANGRUJIAREBANG。LIANGZHONGFANGSHIDOUWUFAZHIJIEJIARENEIRONGQIBIMIANHEJIACENGDUOCENGJUERECAILIAO。TONGCHANGDUOCENGJUERECAILIAOTIEFUZAINEITONGTIWAIBIMIANSHANG,DANGJIACENGYALIJIAODISHI,WAITONGTIBIMIANJINGGUOJIACENGCHUANDIDAOJUERECAILIAOSHANGDERELIANGHENSHAO,ZHUYAOTONGGUOFUSHEHUANRE。XIANGBIJIAO,CAIYONGNEIJIARESHI,NEIRONGQINEISHOUREQITIYUNEIBIMIANDUILIUHUANRE,ZAIJINGYOUGUTIDAOREJIANGRELIANGCHUANDIJIJUERECAILIAO,ZHEIZHONGFANGSHIJIAREGENGWEIZHIJIE。DUINEIJIARECHOUKONGFANGSHIDERONGQINEITONGTIJINXINGLEWENDUCHANGCELIANG,YANJIUJIEGUOBIAOMING,JINGUANNEIBUQITIWENDUFENCENGSHIFENMINGXIAN,DANNEITONGTISHOUREJIAOWEIJUNYUN,ZHEIYEJIUYIWEIJUERECAILIAOSHOUREJUNYUN。

  SHIJIANZHENGMING,ZAICHOUZHENKONGGUOCHENGZHONGJIARE,SHENGGAOCAILIAODEWENDUSHIJIASUCAILIAOBIAOMIANCHUQI、SUODUANPAIQISHIJIANDEZUIYOUXIAODEFANGFA。DANZHENKONGJUERERONGQIDEJIAREBUNENGGUOGAO,YINWEIJUERECAILIAO、RONGQIZHONGDEYIXIEQIANHANJIAN,YIJIYIXIEMIFENGYUANJIANDENGBUNENGJINGSHOUGAODEWENDU。TONGCHANG,DULVBOMOZAIKONGQIHUANJINGXIADEJIAREWENDUBUNENGGAOYU100 ℃,ZAIZHENKONGHUODANQIQIFENZHONGDEJIAREWENDUYIXIAOYU150 ℃WEIYI。KEJIAN,GAOZHENKONGDUOCENGJUEREDIWENRONGQIDEJIAREWENDUBUNENGGAOYU150 ℃。YINERYOUBIYAOZHIDINGHESHIDEJIAREFANGFA,YITIGAORONGQIDECHOUQIZHILIANGHESUODUANCHOUQISHIJIAN。

  CHOUZHENKONGGUOCHENGKAISHIQIAN,YINGSHIRONGQIJIACENGKONGJIANSUOYOUYUANJIAN(GOUCHENGJIACENGKONGJIANDEQIBIBIAOMIAN、XIFUJI、、YIJI) ,ZUIJUNHENGDIJIAREDAOKENENGDEZUIGAOWENDU,BINGQIEYAOZAIZHENGGECHOUKONGGUOCHENGZHONGWEICHIZHEIGEWENDU。ZHEIJIUSHIZAICHOUKONGQIANYAOSHIXINGYURE。JIARUOSHIZAICHOUKONGGUOCHENGZHONGJIANGJIACENGKONGJIANDEYUANJIANJIAREDAOJIDINGDEWENDU,ZEYAOFEIHENZHANGDESHIJIANCAINENGDADAOSUOXUWENDU,YINWEISUIZHEZHENKONGDUTIGAO,JUEREXINGNENGGAISHAN,PUTONGSHUANGCENGRONGQIJIBIANCHENGDUWARONGQI 。

3.3、JIACENGZHIHUAN

幸运飞艇微信群网投平台   ZAIDUOCENGJUERECAILIAOZHONGXIFULEDALIANGDEBUNINGXINGQITI,ZHEIXIEQITIDEBUDUANSHIFANGHUISHIJUEREKONGJIANDEZHENKONGBIANELIE,BINGSHIJUEREXINGNENGJIANGDI。YOUYUZHEIXIEQITIYEBUYIBEIXIFUJIXIFU,ZHIYOUTONGGUOCHOULIJIACENGKONGJIANCAINENGQUEBAOWEICHIJIACENGZHENKONGDU。TONGGUOTONGRUDALIANGGANZAOGAOCHUNDUYILENGNINGHUOYIXIFUQITIJINXINGZHIHUANKESHIXIANGAIMUDE。MUQIANCHANGYONGDEGAOCHUNDUGANZAOQITIWEICO2 HEN2。

  CO2 LENGNINGZHENKONGSHIXIANGZHENKONGJIACENGZHONGCHONGRUCHANGYACO2 ,ZAIDIWENGONGZUOSHICO2 LENGNINGJIESHUANGYIHUODEZHENKONGDEYIZHONGFANGFA。ZAOZAI20SHIJI60NIANDAI,MEIGUOGUOJIABIAOZHUNJUJINXINGLELENGNINGZHENKONGDESHIYANYANJIU,RENWEICO2、SO2 HENOSHI3ZHONGJIAOWEISHIYONGDEQITI,ZUIHOUXUANYONGCO2 ZUOWEILENGNINGZHENKONGYONGQITI,YINWEICO2 YIYUHUODEXIANGDANGCHUNDEZHUANGTAI,JIAGEDI,WUDUXING,QIZHIXIXINGDIYUSO2 HENO。CHULECO2 WAI,GAOCHUNDUGANZAON2YESHICHANGYONGDEZHIHUANQITI。GAOCHUNDUGANZAON2 ZAOJIADI,YIYUHUOQU,QIEDUIHUANJINGWUHAI,TONGSHI,ZAIDIWENHUANJINGXIA,XIFUJIKEDALIANGXIFUN2 ,CONGERWEICHIZHENKONGDU。

幸运飞艇微信群网投平台   ZAIXIANGJIACENGKONGJIANTONGRUZHIHUANQITISHI,YINGZHUYIYIXIAJIDIAN:

  (1)ZHIHUANQITIBIXUXIANGDANGGANZAO(RUGANZAODEGAOCHUNDANQI、GAOCHUNDUERYANGHUATANQIDENG) ;

  (2)ZHIHUANQITIFANGJINJUEREQIANGSHISUDUYAOHUANMAN,FOUZERONGYIHUICHONGHUAIDUOCENGJUERECAILIAOEREHUAJUEREXINGNENG;

幸运飞艇微信群网投平台   (3)JINKENENGCAIYONGJINGJIAREDEQITIJINXINGZHIHUAN,ZHEIYANGJIKEYIFANGZHISHUIQISHENGCHENG,YOUKEYIJINYIBUHUOHUAXIFUJI;

  (4)TONGRUZHIHUANQITIHOU,YINGGUANBIGEFAMEN,TINGZHICHOUZHENKONGYIDUANSHIJIAN,SHIDEJIACENGNEICHONGFENHUANREJIZHIHUAN。YANJIUBIAOMING, CO2 ZHIHUANCHOUZHENKONGFANGFADECHOUZHENKONGSHIJIANSUIRANJIAOZHANG,DANZAIRIZHENGFALV、LENGTAIZHENKONGDUHERIZHENGFALVZHEIJIGEFANGMIANDEBIAOXIANDOUYOUYUDANCHUNDECHOUZHENKONGFANGFA。PEIHEJIAREHUANJIEHOU,NENGSUODUANCHOUKONGSHIJIAN。

4、抽真空工艺总结与展望

幸运飞艇微信群网投平台   CHOUZHENKONGGONGYIDEHAOHUAIZHIJIEYINGXIANGZHENKONGDUDEHUODEYUWEICHI。XIANXINGDECHOUZHENKONGGONGYILIYONGJIAREYUZHIHUANXIANGJIEHEDEFANGSHI,KEYIJIAOHAOJIAOKUAIDISHIXIANGAOZHENKONG,DANZAIYINGYONGSHANGYECUNZAIYIDINGDEJUXIANXING。

幸运飞艇微信群网投平台   (1)JIAREFANGSHIDEXUANZE。DUIYUXIAOXINGLISHIDIWENJUERERONGQI,KEYICAIYONGTUIJIANDENEIJIARECHOUZHENKONGGONGYI,DANDUIYUWOSHICHUGUANHUODAXINGDIWENRONGQI,ZHUYAOCAIYONGWAIJIAREFANGSHI,RUOCAIYONGHELIDENEITONGNEIGUANLUBUZHI,TONGYANGKEYICAIYONGNEIJIARECHOUKONG。

幸运飞艇微信群网投平台   (2)JIACENGWENDUDEKONGZHI。JIACENGXIFUJICHUQIWENDUYUEGAOYUERONGYIHUOHUA,ERGUOGAODEWENDUDUIRONGQIQIANHANBUFENYIJIDUOCENGJUERECAILIAODEXINGNENGDOUBULI,YINERXUANQULIXIANGDEJIAREZUIGAOWENDUHENGUANJIAN。QICI,MUQIANDUIJIACENGNEIDEWENDUNANYIJIANKONG,WUFAPANDINGJIACENGSHIJIWENDU,SUOYIZAIJIARESHIRUHEKONGZHIQUEBAOJIACENGWENDUHENGDINGJIJIAREQITIDELIUCHANGFENBUCHUYUHELIZHUANGTAIYESHIRIHOUYANJIUDEYIGEFANGXIANG。

  (3)CHOUZHENKONGGONGYIDEGUIMOHUASHEJI。ZAIDIWENJUERERONGQIPILIANGSHENGCHANLIUSHUIXIANSHANG,YAOSHIXIANGUIMOHUACHOUZHENKONGGONGYI,ZEYAOQIUDUIGONGYILIUCHENGJINXINGHELISHEJI,BAOKUOZHIHUANQITIJIAREXITONG、QITILIULIANGKONGZHIXITONG、JIACENGJIAREXITONGDENGDEGUIHUA。SUIZHEDUIZHENKONGLILUNDEWANSHANHEDUICHOUZHENKONGGONGYIRENSHIDESHENRU,GONGYIZHONGXIANYOUDEWENTIHEXIANZHIHUISUIZHELILUNHEJINGYANDEJILEIZHUBUDEDAOJIEJUEHEWANSHAN,JINYIBUJIEJUEDIWENYALIRONGQIZHIZAOGUOCHENGZHONGCHOUZHENKONGDEPINGJINGWENTIHEJIANGDICHOUKONGGUOCHENGDENENGHAO。

  CHULETONGTIZISHENHUIHEDUOCENGJUERECAILIAOYIYANGFASHENGFANGQIXIANXIANGWAI,TONGGUOTONGTIDELOUQISULVDUIZHENKONGDUDEYINGXIANGYEBUKEHUSHI。TONGGUOTONGTILOURUDEQITIZHUYAOSHIKONGQI,JINGUANQIZHONGHANYOUSHAOLIANGDEHe, Ne, H2 , DANZHEIXIEQITIDOUJIBUYIBEIXIFU。KONGQIZHUYAOTONGGUOHANFENGHEGEYUJIACENGLIANTONGDEMIFENGJIEGOUDENGQUDAOJINRUJIACENG。YINERZAICHOUZHENKONGQIAN,BIXUJIANLOU,QUEBAOZHENKONGJIACENGJUYOUYOULIANGDEMIFENGXING,CONGYUANTOUSHANGDUJUETONGTILOUQIDUIZHENKONGDUDEYINGXIANG。

2.3、XIFUJI

幸运飞艇微信群网投平台   ZAIHAODEJUERERONGQIYEBUKEBIMIANDICUNZAIYIDINGCHENGDUSHANGDECAILIAOHETONGTILOUFANGQI。SHIYONGXIFUJIDUIYUHUODEBINGBAOCHIJIACENGZAIDIWENXIADEZHENKONGDUQIDAOZHONGYAOZUOYONG。JIACENGZHENKONGDUSHOUMINGZAIHENDACHENGDUSHANGQUJUEYUXIFUJIDETEXING、ZHUANGRULIANGJIQIZUOYONGSHIFOUCHONGFENFAHUI。HE5A FENZISHAISHIDIWENJUEREZHENKONGJIACENGZHONGCHANGYONGDELIANGZHONGXIFUJI,GUONEIWAIXUDUOXUEZHEJICHULELIANGZHEZAIDIWENDIYAXIAXIFUN2、O2、Ar, H2、He、NeDENGQITIDEXIFUDENGWENXIAN。N2、O2、ArSHIKONGQIDEZHUYAOCHENGFEN,He、NeZAIKONGQIZHONGHANLIANGJISHAO,DANDUIGAOZHENKONGDUOCENGJUEREDEWEIHAIBURONGHUSHI; H2 ZESHIJIACENGFANGQIDEZHUYAOZUFEN。ZAILOUQI(N2、O2、Ar)HECAILIAOFANGQI(ZHUYAOSHIH2 )DELIANGGEYINSUZHONG,KAOLVDAOXIANYOUXIFUJIZAI、WENDUXIABUNENGXIFUH2(XIFURONGLIANGJIXIAO) ,MUQIANCHANGCAIYONGXIH2 JI(LIRUYIYANGHUABA)。

3、现行的主要抽真空工艺

幸运飞艇微信群网投平台   MUQIAN,DIWENGAOZHENKONGDUOCENGJUERERONGQIZHUYAOCAIQUJIAREHEZHIHUANXIANGJIEHEDECHOUZHENKONGGONGYI。TU2JICHULEYITAOCHOUZHENKONGGONGYILIUCHENG。CONGZHONGBUNANKANCHUJIARELUIYONGLAIDUIJUERERONGQIJINXINGJIARE,ERJIARELUIIHEIIIZEYONGLAIJIAREZHIHUANQITI,ZHIHUANQITIXUANYONGDANQI。

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