生物質鍋爐(lu)供(gong)(gong)熱系(xi)統(tong)中(zhong)的(de)定(ding)壓(ya)(ya)方式：在高溫熱水(shui)(shui)(shui)(shui)供(gong)(gong)給系(xi)統(tong)中(zhong)，由于水(shui)(shui)(shui)(shui)溫高于常壓(ya)(ya)下水(shui)(shui)(shui)(shui)的(de)飽和(he)(he)溫度(du)，因而，系(xi)統(tong)中(zhong)壓(ya)(ya)力應(ying)當堅(jian)持高于相應(ying)供(gong)(gong)水(shui)(shui)(shui)(shui)溫度(du)的(de)飽和(he)(he)壓(ya)(ya)力，這(zhe)樣才能(neng)夠避免(mian)熱水(shui)(shui)(shui)(shui)汽化和(he)(he)發作水(shui)(shui)(shui)(shui)沖擊。水(shui)(shui)(shui)(shui)是(shi)不(bu)可緊(jin)縮(suo)(suo)(suo)的(de)流(liu)體，一(yi)旦走漏就(jiu)會(hui)降壓(ya)(ya);相反，水(shui)(shui)(shui)(shui)加熱又 會(hui)體積收縮(suo)(suo)(suo)，假如(ru)不(bu)能(neng)穩定(ding)壓(ya)(ya)力，也會(hui)毀壞供(gong)(gong)熱系(xi)統(tong)中(zhong)的(de)設備。由此，為了避免(mian)降壓(ya)(ya)汽化和(he)(he)收縮(suo)(suo)(suo)升壓(ya)(ya)，高溫熱水(shui)(shui)(shui)(shui)系(xi)統(tong)必需穩定(ding)系(xi)統(tong)內(nei)的(de)壓(ya)(ya)力，這(zhe)就(jiu)是(shi)定(ding)壓(ya)(ya)。

熱水供熱系統的定壓方式有以下幾種：

1），采用高架水箱(xiang)定(ding)壓(ya)(ya)(ya)方式<br>這種(zhong)方式的(de)定(ding)壓(ya)(ya)(ya)點(dian)設在(zai)熱水循環(huan)泵入口(kou)或回(hui)水主干線上，安裝(zhuang)(zhuang)僅僅為一只高架水箱(xiang)，其構造簡單，工作穩定(ding)牢(lao)靠，能穩定(ding)系(xi)(xi)統(tong)壓(ya)(ya)(ya)力，并能滿足系(xi)(xi)統(tong)網(wang)絡的(de)溢水和補水請(qing)求。在(zai)這種(zhong)系(xi)(xi)統(tong)中，水箱(xiang)裝(zhuang)(zhuang)置高度必(bi)需(xu)滿足使系(xi)(xi)統(tong)中最高點(dian)不汽化的(de)請(qing)求。因而，裝(zhuang)(zhuang)置位置較(jiao)高。這種(zhong)定(ding)壓(ya)(ya)(ya)方式適用與(yu)供(gong)熱范圍不大的(de)低溫水供(gong)熱系(xi)(xi)統(tong)中。

2），采用(yong)(yong)(yong)補(bu)(bu)(bu)(bu)(bu)給(gei)(gei)(gei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)泵(beng)定(ding)(ding)(ding)壓(ya)(ya)(ya)(ya)(ya)方(fang)式(shi)(shi)<br>供熱(re)(re)系(xi)統(tong)(tong)(tong)(tong)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)較高(gao)時(shi)(shi)，采用(yong)(yong)(yong)高(gao)級水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)箱(xiang)不能(neng)保(bao)證系(xi)統(tong)(tong)(tong)(tong)所需(xu)的(de)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)，此(ci)(ci)時(shi)(shi)，應(ying)當(dang)(dang)采用(yong)(yong)(yong)補(bu)(bu)(bu)(bu)(bu)給(gei)(gei)(gei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)泵(beng)定(ding)(ding)(ding)壓(ya)(ya)(ya)(ya)(ya)方(fang)式(shi)(shi)。這(zhe)(zhe)(zhe)種(zhong)定(ding)(ding)(ding)壓(ya)(ya)(ya)(ya)(ya)方(fang)式(shi)(shi)在蘇(su)聯熱(re)(re)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)鍋(guo)爐供熱(re)(re)系(xi)統(tong)(tong)(tong)(tong)中(zhong)被普遍應(ying)用(yong)(yong)(yong)。補(bu)(bu)(bu)(bu)(bu)給(gei)(gei)(gei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)泵(beng)定(ding)(ding)(ding)壓(ya)(ya)(ya)(ya)(ya)有連(lian)續(xu)補(bu)(bu)(bu)(bu)(bu)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)定(ding)(ding)(ding)壓(ya)(ya)(ya)(ya)(ya)和連(lian)續(xu)補(bu)(bu)(bu)(bu)(bu)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)定(ding)(ding)(ding)壓(ya)(ya)(ya)(ya)(ya)兩(liang)種(zhong)方(fang)式(shi)(shi)。 此(ci)(ci)生物質鍋(guo)爐定(ding)(ding)(ding)壓(ya)(ya)(ya)(ya)(ya)方(fang)式(shi)(shi)的(de)安(an)裝(zhuang)由(you)補(bu)(bu)(bu)(bu)(bu)給(gei)(gei)(gei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)箱(xiang)，補(bu)(bu)(bu)(bu)(bu)給(gei)(gei)(gei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)泵(beng)，壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)調(diao)理器(qi)(qi)等組成(cheng)。當(dang)(dang)系(xi)統(tong)(tong)(tong)(tong)運(yun)轉正常時(shi)(shi)，經(jing)過壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)調(diao)理器(qi)(qi)調(diao)理使(shi)補(bu)(bu)(bu)(bu)(bu)給(gei)(gei)(gei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)泵(beng)連(lian)續(xu)補(bu)(bu)(bu)(bu)(bu)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)并(bing)(bing)(bing)使(shi)之與系(xi)統(tong)(tong)(tong)(tong)的(de)走漏量(liang)相順應(ying)，從而維(wei)(wei)持(chi)系(xi)統(tong)(tong)(tong)(tong)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)的(de)穩定(ding)(ding)(ding)。當(dang)(dang)循(xun)(xun)環水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)泵(beng)停(ting)(ting)運(yun)時(shi)(shi)，能(neng)夠(gou)關(guan)閉壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)調(diao)理器(qi)(qi)前的(de)截止(zhi)閥。補(bu)(bu)(bu)(bu)(bu)給(gei)(gei)(gei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)泵(beng)仍連(lian)續(xu)補(bu)(bu)(bu)(bu)(bu)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)以維(wei)(wei)持(chi)系(xi)統(tong)(tong)(tong)(tong)所需(xu)的(de)靜壓(ya)(ya)(ya)(ya)(ya)。這(zhe)(zhe)(zhe)種(zhong)定(ding)(ding)(ding)壓(ya)(ya)(ya)(ya)(ya)方(fang)式(shi)(shi)無(wu)需(xu)收(shou)縮(suo)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)箱(xiang)，因此(ci)(ci)設備費用(yong)(yong)(yong)低廉(lian)，此(ci)(ci)外(wai)，補(bu)(bu)(bu)(bu)(bu)給(gei)(gei)(gei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)泵(beng)又補(bu)(bu)(bu)(bu)(bu)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)又定(ding)(ding)(ding)壓(ya)(ya)(ya)(ya)(ya)，水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)泵(beng)功率不大，運(yun)轉費用(yong)(yong)(yong)也(ye)很(hen)小。因而，這(zhe)(zhe)(zhe)種(zhong)方(fang)式(shi)(shi)在我國熱(re)(re)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)供熱(re)(re)系(xi)統(tong)(tong)(tong)(tong)中(zhong)應(ying)用(yong)(yong)(yong)相當(dang)(dang)普遍。這(zhe)(zhe)(zhe)種(zhong)定(ding)(ding)(ding)壓(ya)(ya)(ya)(ya)(ya)方(fang)式(shi)(shi)最(zui)大的(de)缺陷是(shi)假如系(xi)統(tong)(tong)(tong)(tong)忽然停(ting)(ting)電(dian)時(shi)(shi)，補(bu)(bu)(bu)(bu)(bu)給(gei)(gei)(gei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)泵(beng)將失去定(ding)(ding)(ding)壓(ya)(ya)(ya)(ya)(ya)作(zuo)用(yong)(yong)(yong)。為避免此(ci)(ci)時(shi)(shi)鍋(guo)爐缺水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)汽化(hua)，系(xi)統(tong)(tong)(tong)(tong)中(zhong)采用(yong)(yong)(yong)了(le)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)上水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)輔助(zhu)(zhu)型安(an)裝(zhuang)，當(dang)(dang)循(xun)(xun)環水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)泵(beng)運(yun)轉時(shi)(shi)，由(you)于(yu)上水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)輔助(zhu)(zhu)安(an)裝(zhuang)，循(xun)(xun)環水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)不會倒灌到(dao)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)上升系(xi)統(tong)(tong)(tong)(tong)中(zhong)去。當(dang)(dang)忽然停(ting)(ting)電(dian)而使(shi)循(xun)(xun)環水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)泵(beng)，補(bu)(bu)(bu)(bu)(bu)給(gei)(gei)(gei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)泵(beng)停(ting)(ting)運(yun)時(shi)(shi)，壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)上水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)系(xi)統(tong)(tong)(tong)(tong)立刻投入(ru)運(yun)轉，止(zhi)回閥被自動(dong)(dong)(dong)翻開(kai)，壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)將流經(jing)熱(re)(re)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)鍋(guo)爐并(bing)(bing)(bing)從集氣罐排出，從而防止(zhi)了(le)爐室余熱(re)(re)惹(re)起鍋(guo)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)汽化(hua)。與此(ci)(ci)同時(shi)(shi)的(de)操作(zuo)是(shi)應(ying)該關(guan)閉供，回熱(re)(re)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)管(guan)總(zong)閥，使(shi)得熱(re)(re)源(yuan)和熱(re)(re)網隔(ge)絕開(kai)來。 生物質鍋(guo)爐補(bu)(bu)(bu)(bu)(bu)給(gei)(gei)(gei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)泵(beng)連(lian)續(xu)補(bu)(bu)(bu)(bu)(bu)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)定(ding)(ding)(ding)壓(ya)(ya)(ya)(ya)(ya)由(you)電(dian)接(jie)(jie)點壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)表(biao)控制來完成(cheng)，循(xun)(xun)環水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)泵(beng)入(ru)口(kou)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)能(neng)夠(gou)維(wei)(wei)持(chi)在一定(ding)(ding)(ding)范圍(wei)內，當(dang)(dang)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)低于(yu)這(zhe)(zhe)(zhe)個范圍(wei)時(shi)(shi)，電(dian)接(jie)(jie)點壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)表(biao)動(dong)(dong)(dong)作(zuo)并(bing)(bing)(bing)接(jie)(jie)通補(bu)(bu)(bu)(bu)(bu)給(gei)(gei)(gei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)泵(beng)電(dian)動(dong)(dong)(dong)機電(dian)路，補(bu)(bu)(bu)(bu)(bu)給(gei)(gei)(gei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)泵(beng)運(yun)轉，補(bu)(bu)(bu)(bu)(bu)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)，熱(re)(re)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)循(xun)(xun)環泵(beng)入(ru)口(kou)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)升高(gao)并(bing)(bing)(bing)超越一定(ding)(ding)(ding)范圍(wei)時(shi)(shi)，熱(re)(re)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)鍋(guo)爐的(de)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)表(biao)就是(shi)切斷補(bu)(bu)(bu)(bu)(bu)給(gei)(gei)(gei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)泵(beng)電(dian)源(yuan)，是(shi)補(bu)(bu)(bu)(bu)(bu)給(gei)(gei)(gei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)泵(beng)停(ting)(ting)運(yun)。如此(ci)(ci)往復動(dong)(dong)(dong)作(zuo)，補(bu)(bu)(bu)(bu)(bu)給(gei)(gei)(gei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)泵(beng)連(lian)續(xu)補(bu)(bu)(bu)(bu)(bu)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)，并(bing)(bing)(bing)維(wei)(wei)持(chi)系(xi)統(tong)(tong)(tong)(tong)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)在一定(ding)(ding)(ding)范圍(wei)內動(dong)(dong)(dong)搖，這(zhe)(zhe)(zhe)樣系(xi)統(tong)(tong)(tong)(tong)定(ding)(ding)(ding)壓(ya)(ya)(ya)(ya)(ya)方(fang)式(shi)(shi)，由(you)于(yu)連(lian)續(xu)補(bu)(bu)(bu)(bu)(bu)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)，就比連(lian)續(xu)補(bu)(bu)(bu)(bu)(bu)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)儉省電(dian)能(neng)，但(dan)是(shi)其(qi)調(diao)理和定(ding)(ding)(ding)壓(ya)(ya)(ya)(ya)(ya)質量(liang)比連(lian)續(xu)補(bu)(bu)(bu)(bu)(bu)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)方(fang)式(shi)(shi)要差(cha)，還有壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)動(dong)(dong)(dong)搖大，壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)表(biao)觸點動(dong)(dong)(dong)作(zuo)頻繁易于(yu)損壞等缺陷。