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【產品名稱】YH-90B混凝土養護箱，混凝土標準養護箱，水泥標準養護箱，據新標準GB/T17671-1999、 IS0679．1989的要求。在原有的40B型水泥混凝土恒溫恒濕養護箱的基礎上加以完善和改進后開發的新式養護設備，是建材、建筑行業的化驗室。在檢測水泥、混凝土的強度時，養護水泥和混凝土試塊的實驗設備。箱體采用內外兩層，由外箱體和內箱體，外箱體采用*冷軋鋼板，內箱體采用不銹鋼板，擱板采用不銹鋼型材制成，防腐蝕性好。內箱體下邊的水箱用于加熱及輔助增濕，增濕系統以超聲波增濕儀為主，水加熱蒸發為輔，自動控制系統由控溫儀及控濕儀表按給定的溫、濕度制冷，加熱以及增濕實行自動切換，箱內溫、濕度由儀表數字顯示。
YH-90B混凝土養護箱主要技術參數：
水泥混凝土恒溫恒濕養護箱的開發成功，為建材、建筑行業提供了一種能夠達到實驗要求的自控設備。操作簡單方便，溫濕度自控并有直觀數字顯示，溫度采用加熱與壓縮機降溫來達到標準要求，濕嗖采用超聲波加濕器保證要求，全自動功能控制只需打開電源，便能達到您所需要的目的。箱內壁采用進口不銹鋼板制成，內，外箱體之間用聚氨脂泡沫塑料做保溫材料，以改正老產品中用礦渣綿做保溫層的缺點，使內外箱體形成一體，同時也防止了外箱殼鐵板生銹腐蝕。
混(hun)凝土標準養(yang)護箱結構和工(gong)作(zuo)原(yuan)理：
1、結構
箱體采用內外兩層，由外箱體和內箱體，外箱體采用*冷軋鋼板，內箱體采用不銹鋼板，擱板采用不銹鋼型材制成，防腐蝕性好。內箱體下邊的水箱用于加熱及輔助增濕，增濕系統以超聲波增濕儀為主，水加熱蒸發為輔，自動控制系統由控溫儀及控濕儀表按給定的溫、濕度制冷，加熱以及增濕實行自動切換，箱內溫、濕度由儀表數字顯示。
2、工作原理
溫控：當箱內溫度低于溫控儀下限給定值時，溫控儀輸出加熱信號指令電熱原件開始工作，反之溫度高于上限給定值時，溫控儀指令制冷系統工作，當箱內溫度達到所需要求時，即自動停止加熱或制冷。
濕控：采用超聲波加濕器增濕，能保證箱內濕度達到≥95％,由溫控儀自動控制增濕裝置，當濕度＜95％時，溫控儀指令增濕器工作，達到回差值后，自動停止工作，回差值應調在0-1℃，不易過大。
1、控濕溫度：RH90％以上
2、控制溫度：20℃±1℃
3、電源電壓：220V 50HZ
4、加熱功率：1000W
5、制冷功率：145W
6、增濕功率：45W
7、增 濕 量：400毫升/小時
8、增濕器容積：5.5L
9、箱內空間： 40B型可放150³混凝土試塊15組
60B型可放150³混凝土試塊40組
90B型可放150³混凝土試塊60組
目前，國家現(xian)有(you)的(de)(de)(de)(de)產品中(zhong)，很多類(lei)型號的(de)(de)(de)(de)40B標準(zhun)水泥(ni)混凝土(tu)恒(heng)溫(wen)(wen)(wen)(wen)恒(heng)濕(shi)(shi)養護(hu)箱(xiang)存在(zai)著(zhu)保溫(wen)(wen)(wen)(wen)性能差、溫(wen)(wen)(wen)(wen)度(du)(du)(du)控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)差、濕(shi)(shi)度(du)(du)(du)無琺達到(dao)標準(zhun)的(de)(de)(de)(de)缺點，如控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)恒(heng)溫(wen)(wen)(wen)(wen)時(shi)(shi)，大(da)部(bu)分采用兩(liang)(liang)個(ge)溫(wen)(wen)(wen)(wen)度(du)(du)(du)控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)儀(yi)，一個(ge)控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)加(jia)溫(wen)(wen)(wen)(wen)，另(ling)一個(ge)控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)降(jiang)溫(wen)(wen)(wen)(wen)，由于實驗要求的(de)(de)(de)(de)標準(zhun)溫(wen)(wen)(wen)(wen)度(du)(du)(du)是(shi)20℃，溫(wen)(wen)(wen)(wen)差越(yue)大(da)越(yue)影響檢測(ce)結果(guo)(guo)，所(suo)以溫(wen)(wen)(wen)(wen)差越(yue)小越(yue)好·因(yin)此在(zai)調節器(qi)的(de)(de)(de)(de)兩(liang)(liang)個(ge)溫(wen)(wen)(wen)(wen)度(du)(du)(du)控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)儀(yi)時(shi)(shi)，由于溫(wen)(wen)(wen)(wen)度(du)(du)(du)控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)儀(yi)本身的(de)(de)(de)(de)誤差，往往會造成溫(wen)(wen)(wen)(wen)差加(jia)大(da)或加(jia)溫(wen)(wen)(wen)(wen)降(jiang)溫(wen)(wen)(wen)(wen)同時(shi)(shi)進行，從而(er)失去控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)溫(wen)(wen)(wen)(wen)度(du)(du)(du)的(de)(de)(de)(de)效(xiao)果(guo)(guo)。另(ling)一種控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)恒(heng)溫(wen)(wen)(wen)(wen)的(de)(de)(de)(de)辦法是(shi)：用一個(ge)溫(wen)(wen)(wen)(wen)度(du)(du)(du)控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)儀(yi)控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)兩(liang)(liang)個(ge)繼電(dian)(dian)器(qi)一個(ge)繼電(dian)(dian)器(qi)控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)加(jia)溫(wen)(wen)(wen)(wen)，另(ling)一個(ge)繼電(dian)(dian)器(qi)控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)降(jiang)溫(wen)(wen)(wen)(wen)，兩(liang)(liang)個(ge)繼電(dian)(dian)器(qi)在(zai)控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)面板(ban)上分別(bie)由兩(liang)(liang)個(ge)開關控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)，這樣(yang)雖然控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)溫(wen)(wen)(wen)(wen)度(du)(du)(du)的(de)(de)(de)(de)精度(du)(du)(du)高(gao)些，但是(shi)操作稍有(you)失誤，不(bu)是(shi)都不(bu)工(gong)作就(jiu)是(shi)加(jia)熱(re)和降(jiang)溫(wen)(wen)(wen)(wen)同時(shi)(shi)進行，這樣(yang)也會失去恒(heng)溫(wen)(wen)(wen)(wen)效(xiao)果(guo)(guo)。另(ling)外標準(zhun)水泥(ni)(砼)恒(heng)溫(wen)(wen)(wen)(wen)恒(heng)濕(shi)(shi)養護(hu)箱(xiang)的(de)(de)(de)(de)標準(zhun)濕(shi)(shi)度(du)(du)(du)要求是(shi)90-95％。現(xian)有(you)的(de)(de)(de)(de)技術都沒有(you)加(jia)濕(shi)(shi)控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)和顯示裝置，只是(shi)在(zai)養護(hu)箱(xiang)內(nei)淋水來(lai)增加(jia)濕(shi)(shi)度(du)(du)(du)。不(bu)能直接測(ce)出箱(xiang)內(nei)濕(shi)(shi)度(du)(du)(du)的(de)(de)(de)(de)大(da)小，也不(bu)能自控(kong)(kong)(kong)(kong)(kong)(kong)，這樣(yang)試體的(de)(de)(de)(de)養護(hu)結果(guo)(guo)可(ke)能不(bu)準(zhun)確。
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