因板式換熱機組的流道截面積較(jiao)窄(zhai),板式換(huan)熱(re)機組中的換熱器內的(de)沉淀物和懸浮物聚(ju)集在角孔處和導(dao)流區內，導(dao)致(zhi)該處的(de)流道面(mian)積大為(wei)減小，造成壓(ya)降(jiang)過(guo)大，對(dui)于板(ban)式換熱機組的(de)壓降過(guo)大，如何巧妙的解決呢？下面由山(shan)東新壬的技術小編給大家詳細總結一下:

　　1、清(qing)(qing)(qing)(qing)除換熱器流(liu)道中(zhong)的(de)(de)臟物或(huo)板(ban)(ban)片(pian)結垢(gou)，對于新運(yun)行的(de)(de)系統，根據實際情況每(mei)周清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)一(yi)次。清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)板(ban)(ban)片(pian)表面水(shui)(shui)垢(gou)（主要(yao)指CaCO3）時(shi)(shi)，選用(yong)(yong)含(han)0.3氨基磺酸(suan)溶液(ye)(ye)或(huo)含(han)0.3烏洛托平、0.2苯胺、0.1硫氰酸(suan)鉀(jia)的(de)(de)0.8硝酸(suan)溶液(ye)(ye)作為清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)液(ye)(ye)，清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)溫(wen)度(du)4O～6O℃。不拆(chai)卸設(she)備(bei)(bei)化學浸泡(pao)清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)時(shi)(shi)，要(yao)打開換熱器冷介(jie)質(zhi)進(jin)、出口，或(huo)安裝設(she)備(bei)(bei)時(shi)(shi)在(zai)介(jie)質(zhi)進(jin)、出口接(jie)管(guan)上安裝DN25清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)口，將(jiang)配好的(de)(de)清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)液(ye)(ye)注入(ru)設(she)備(bei)(bei)中(zhong)，浸泡(pao)后用(yong)(yong)清(qing)(qing)(qing)(qing)水(shui)(shui)清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)干凈(jing)殘(can)留(liu)酸(suan)液(ye)(ye)，使(shi)pH≥7。拆(chai)開清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)時(shi)(shi)，將(jiang)板(ban)(ban)片(pian)在(zai)清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)液(ye)(ye)中(zhong)浸泡(pao)30min，然(ran)后用(yong)(yong)軟刷輕刷結垢(gou)，最(zui)后用(yong)(yong)清(qing)(qing)(qing)(qing)水(shui)(shui)清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)干凈(jing)。清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)過程中(zhong)應(ying)避免損傷(shang)板(ban)(ban)片(pian)與橡膠(jiao)墊(dian)。若采用(yong)(yong)不拆(chai)卸機(ji)械(xie)反沖洗(xi)(xi)(xi)方法，應(ying)事先在(zai)介(jie)質(zhi)進(jin)、出口管(guan)路上接(jie)一(yi)管(guan)口，將(jiang)設(she)備(bei)(bei)與機(ji)械(xie)清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)車連接(jie)，把(ba)清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)液(ye)(ye)按介(jie)質(zhi)流(liu)動(dong)的(de)(de)反方向注入(ru)設(she)備(bei)(bei)，循(xun)環(huan)清(qing)(qing)(qing)(qing)洗(xi)(xi)(xi)時(shi)(shi)間10～15min，介(jie)質(zhi)流(liu)速控制在(zai)0.05～0.15m/s。最(zui)后再用(yong)(yong)清(qing)(qing)(qing)(qing)水(shui)(shui)循(xun)環(huan)幾遍(bian)，使(shi)清(qing)(qing)(qing)(qing)水(shui)(shui)中(zhong)Cl質(zhi)量(liang)濃度(du)控制在(zai)25mg/I以(yi)下(xia)。
　　2、二次循環水(shui)最好采用經過軟化處理后(hou)的軟水(shui)，一(yi)般要求水(shui)中懸浮(fu)物質(zhi)量濃(nong)度(du)(du)不(bu)大(da)(da)(da)于(yu)(yu)5mg/L、雜(za)質(zhi)直徑不(bu)大(da)(da)(da)于(yu)(yu)3 mm、pH≥7。當水(shui)溫(wen)不(bu)大(da)(da)(da)于(yu)(yu)95℃時，Ca 、Mg濃(nong)度(du)(du)應(ying)不(bu)大(da)(da)(da)于(yu)(yu)2 mmol/L；當水(shui)溫(wen)大(da)(da)(da)于(yu)(yu)95℃時，Ca 、Mg 濃(nong)度(du)(du)應(ying)不(bu)大(da)(da)(da)于(yu)(yu)0．3mmol/L、溶(rong)解氧質(zhi)量濃(nong)度(du)(du)應(ying)不(bu)大(da)(da)(da)于(yu)(yu)0．1 mg/L。
　　3、對于集中(zhong)供熱系統，可以采用一次(ci)向二次(ci)補水的方法。
　　以上是板(ban)式(shi)換熱機組中的(de)幾種常見故(gu)障(zhang),要對(dui)于這(zhe)種故(gu)障(zhang)要及時的(de)解決處理,經常性(xing)做好維(wei)護工(gong)作~~