1.噴(pen)吹法檢(jian)(jian)(jian)漏(lou)(lou)(lou)(lou)(lou)的原理噴(pen)吹法檢(jian)(jian)(jian)漏(lou)(lou)(lou)(lou)(lou)是利用輔助真空泵(beng)或檢(jian)(jian)(jian)漏(lou)(lou)(lou)(lou)(lou)儀對(dui)被檢(jian)(jian)(jian)產品內(nei)部密封室抽真空，然(ran)后在被檢(jian)(jian)(jian)產品外(wai)表面(mian)噴(pen)吹氦氣，當被檢(jian)(jian)(jian)產品表面(mian)有漏(lou)(lou)(lou)(lou)(lou)孔(kong)(kong)時，氦氣就會通過漏(lou)(lou)(lou)(lou)(lou)孔(kong)(kong)進入被檢(jian)(jian)(jian)產品內(nei)部，再進入氦質(zhi)譜檢(jian)(jian)(jian)漏(lou)(lou)(lou)(lou)(lou)儀，檢(jian)(jian)(jian)漏(lou)(lou)(lou)(lou)(lou)儀會報警并顯示當前漏(lou)(lou)(lou)(lou)(lou)率值(zhi)。2噴(pen)吹法檢(jian)(jian)(jian)漏(lou)(lou)(lou)(lou)(lou)的優點1.檢(jian)(jian)(jian)測靈敏度(du)高(gao);2.定位(wei)準確;3.對(dui)大容器或復雜結構產品的檢(jian)(jian)(jian)漏(lou)(lou)(lou)(lou)(lou)可靠(kao)性(xing)高(gao)。

氦質(zhi)(zhi)譜檢(jian)(jian)(jian)(jian)漏(lou)(lou)儀(yi)(yi)(yi)(yi)主要(yao)技術指標：1. 小(xiao)可(ke)檢(jian)(jian)(jian)(jian)漏(lou)(lou)率(lv)：5×10-12Pa·m3/s。2. 漏(lou)(lou)率(lv)顯圍：1×10-3—1×10-12Pa·m3/s氦質(zhi)(zhi)譜檢(jian)(jian)(jian)(jian)漏(lou)(lou)儀(yi)(yi)(yi)(yi)應用制(zhi)冷(leng)行業：冰(bing)箱、空(kong)調、汽(qi)車(che)用空(kong)調、蒸(zheng)發器、冷(leng)凝器、奪(duo)縮機、低(di)溫儲槽。氦氣檢(jian)(jian)(jian)(jian)漏(lou)(lou)儀(yi)(yi)(yi)(yi)可(ke)對(dui)使用過程(cheng)中產生的(de)(de)濃度(du)(du)不合格氦氣進行提(ti)純，極大降低(di)氦氣損耗（功能可(ke)選(xuan)）氦質(zhi)(zhi)譜檢(jian)(jian)(jian)(jian)漏(lou)(lou)儀(yi)(yi)(yi)(yi)設備內芯制(zhi)造借鑒國外技術，汽(qi)車(che)零部件氣密性檢(jian)(jian)(jian)(jian)測，具有(you)靈敏度(du)(du)高，反(fan)應快，開機時間短等特點，是一款(kuan)液晶(jing)觸摸彩屏(ping)顯示的(de)(de)全自(zi)動(dong)氦質(zhi)(zhi)譜檢(jian)(jian)(jian)(jian)漏(lou)(lou)儀(yi)(yi)(yi)(yi)。檢(jian)(jian)(jian)(jian)漏(lou)(lou)儀(yi)(yi)(yi)(yi)高壓強下(xia)檢(jian)(jian)(jian)(jian)漏(lou)(lou)：檢(jian)(jian)(jian)(jian)漏(lou)(lou)口壓強可(ke)高達數(shu)百帕左右(you)，對(dui)檢(jian)(jian)(jian)(jian)測大系統和有(you)大漏(lou)(lou)的(de)(de)工(gong)件很有(you)益。筆者根據實測經驗，兩(liang)次噴氦的(de)(de)較(jiao)小(xiao)間隔時間控(kong)制(zhi)在30s左右(you)，即如果次噴氦后30s內檢(jian)(jian)(jian)(jian)漏(lou)(lou)儀(yi)(yi)(yi)(yi)還沒有(you)反(fan)應，則可(ke)進行第(di)二次噴氦。

真(zhen)空檢漏(lou)(lou)(lou)的具體(ti)方法檢漏(lou)(lou)(lou)步驟為:1.用力按壓氣(qi)(qi)袋從粗抽閥(fa)開始向爐體(ti)方向噴(pen)吹氦氣(qi)(qi)，第-遍針頭(tou)移(yi)動(dong)的速度(du)可以(yi)快些，對設(she)備的全部焊口、法蘭連(lian)接、動(dong)密封、熱(re)電偶(ou)連(lian)接等處(chu)進行檢漏(lou)(lou)(lou)，在(zai)焊口不(bu)規整及法蘭連(lian)接縫隙不(bu)均勻(yun)處(chu)將噴(pen)吹移(yi)動(dong)速度(du)放緩(huan)并進行細致檢查。2.不(bu)按壓氣(qi)(qi)袋，用針頭(tou)緩(huan)慢(man)地對位置進行檢查，漏(lou)(lou)(lou)孔會吸入(ru)針頭(tou)中存有(you)的少氦氣(qi)(qi)，觀(guan)測檢漏(lou)(lou)(lou)儀(yi)屏幕漏(lou)(lou)(lou)率值噴(pen)吹過程中的變(bian)化，找到漏(lou)(lou)(lou)率大且上升快的點即是漏(lou)(lou)(lou)點。