將雙管(guan)板與單(dan)管(guan)板換熱器(qi)(qi)結構(gou)進行(xing)對比(bi)，我(wo)們能(neng)更加清晰的了解這兩者(zhe)之間(jian)的關系(xi)，在挑選和使用單(dan)管(guan)板，雙管(guan)板換熱器(qi)(qi)的時(shi)候起到(dao)幫助作用。
1、雙管(guan)(guan)(guan)板(ban)換(huan)(huan)熱器采用固定管(guan)(guan)(guan)板(ban)結構(gou)，管(guan)(guan)(guan)束(shu)不能抽出清洗，單管(guan)(guan)(guan)板(ban)換(huan)(huan)熱器可采用多種結構(gou)型式，管(guan)(guan)(guan)束(shu)可以抽出清洗。
2、對于溫差較大的(de)雙(shuang)管(guan)(guan)板換(huan)(huan)熱(re)器(qi)，簡(jian)體上(shang)可加裝波紋膨(peng)(peng)脹(zhang)節;而單管(guan)(guan)板換(huan)(huan)熱(re)器(qi)除可考慮簡(jian)體上(shang)加裝波紋膨(peng)(peng)脹(zhang)節外(wai)，常(chang)采用浮頭或U型管(guan)(guan)型式來補償。
3、對(dui)(dui)(dui)于(yu)雙(shuang)管(guan)(guan)(guan)(guan)(guan)(guan)板(ban)(ban)(ban)(ban)換(huan)(huan)熱(re)(re)器(qi)，存(cun)在(zai)二種(zhong)設(she)(she)計理(li)念(nian)的(de)(de)(de)認(ren)(ren)識：一(yi)(yi)種(zhong)認(ren)(ren)為雙(shuang)管(guan)(guan)(guan)(guan)(guan)(guan)板(ban)(ban)(ban)(ban)換(huan)(huan)熱(re)(re)器(qi)用于(yu)絕對(dui)(dui)(dui)防止管(guan)(guan)(guan)(guan)(guan)(guan)殼(ke)程(cheng)間介(jie)(jie)質(zhi)混串的(de)(de)(de)場合，設(she)(she)計在(zai)內外(wai)管(guan)(guan)(guan)(guan)(guan)(guan)板(ban)(ban)(ban)(ban)之間空腔上(shang)加(jia)(jia)裝排液倒淋閥，供(gong)日常(chang)觀察和(he)內管(guan)(guan)(guan)(guan)(guan)(guan)板(ban)(ban)(ban)(ban)發生泄漏時排放，使(shi)得管(guan)(guan)(guan)(guan)(guan)(guan)殼(ke)程(cheng)介(jie)(jie)質(zhi)切(qie)實(shi)被內外(wai)二層管(guan)(guan)(guan)(guan)(guan)(guan)板(ban)(ban)(ban)(ban)隔離。這(zhe)是采(cai)用雙(shuang)管(guan)(guan)(guan)(guan)(guan)(guan)板(ban)(ban)(ban)(ban)結構型式的(de)(de)(de)主要目的(de)(de)(de)。另一(yi)(yi)種(zhong)認(ren)(ren)為雙(shuang)管(guan)(guan)(guan)(guan)(guan)(guan)板(ban)(ban)(ban)(ban)換(huan)(huan)熱(re)(re)器(qi)可用于(yu)管(guan)(guan)(guan)(guan)(guan)(guan)殼(ke)程(cheng)間介(jie)(jie)質(zhi)壓差很大的(de)(de)(de)場合，設(she)(she)計在(zai)內外(wai)管(guan)(guan)(guan)(guan)(guan)(guan)板(ban)(ban)(ban)(ban)之間的(de)(de)(de)空腔中加(jia)(jia)入一(yi)(yi)種(zhong)介(jie)(jie)質(zhi)，來減小管(guan)(guan)(guan)(guan)(guan)(guan)殼(ke)程(cheng)間介(jie)(jie)質(zhi)的(de)(de)(de)壓差。這(zhe)和(he)一(yi)(yi)般單管(guan)(guan)(guan)(guan)(guan)(guan)板(ban)(ban)(ban)(ban)換(huan)(huan)熱(re)(re)器(qi)一(yi)(yi)樣(yang)，不能絕對(dui)(dui)(dui)保證外(wai)管(guan)(guan)(guan)(guan)(guan)(guan)板(ban)(ban)(ban)(ban)上(shang)管(guan)(guan)(guan)(guan)(guan)(guan)口(kou)不發生泄漏。
從換熱器的結構出發，我們可以發現單管板與雙管板換熱器之間有著這些差異，了解這些內容也能夠幫助大家根據實際需求來挑選換熱器種類。
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