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远离热源厂设置热网补水定压点技术方案
发布时2015-05-24 18:4725

 1前言

    SUIZHECHENGSHIGUIMODEBUDUANKUODA,CHENGSHIJIZHONGGONGREDEGUIMOZAIFEISUFAZHAN,RENMENDUIHUANJINGDEYAOQIUYEYUELAIYUEGAO,REYUANCHANGZHUJIANYUANLICHENGSHI,YUANJULISHUSONGREYUANYICHENGWEIBIRAN。

    邯郸市集中供热始建于1985年,依托位于主城区北部的邯郸热电厂作为热源向城市供热。随着城市发展,邯郸热电厂的供热能力在2004年就逐步趋于饱和。为满足城市供热需求,位于邯郸市城区西南12公里的马头发电厂新建2×300MW供热机组向城区供热,最大抽汽量450t/h,最大供热量576.225MW,输送管径为DN1200,敷设方式为直埋。由于马头电厂厂区内缺乏足够的一次网补水优质水源,同时考虑补水成本等因素,一次网补水由热力公司承担。但在《城市热力网设计规范》中并未对远离热源厂设置补水定压点做任何规定,本文就工程实例进行阐述,说明远离热源厂设置补水定压点是可行的。

    2远离热源热网补水定压点位置的选择

澳门足彩     GENJU《CHENGSHIRELIWANGSHEJIGUIFAN》,DINGYADIANYINGSHEZAIBIANYUGUANLIBINGYOULIYUGUANWANGYALIWENDINGDEWEIZHI,YISHEZAIREYUANCHU。YOUYUMATOUREYUANCHANGJULICHENGQUJIAOYUAN,YUANJULISHUSONGYANTUJUNWEIGENGDI,WUFAJIANSHEZHISHUICHEJIAN。JINGZONGHEKAOLV,ZUIZHONGBUSHUIDINGYADIANSHEZHIZAICHENGQUBIANYUANCHU,YOUYOUZHICHONGZUDEZILAISHUIZUOWEIBUSHUISHUIYUAN,JULICHENGQUYEJIAOJIN,FANGBIANGONGZUORENYUANSHANGXIABAN。

    3远离热源补水定压点设备选型

    设置补水定压点就是建设一座制水车间,兼负补水定压功能。车间的主要设备有制水设备和定压补水设备软化水罐、盐液泵等电气设备和仪表;补水设备主要是补水泵、变频器及其他电气、仪表设备。
中蓝天定压补水设备

    ZHISHUI、BUSHUISHEBEIDECANSHUZHUYAOWEIZHISHUINENGLIHESHUIBENGLIULIANGHEYANGCHENG。ZHISHUINENGLIHEBUSHUIBENGLIULIANGDEQUEDINGZHUYAOQUJUEYUYICIWANGXUNHUANLIULIANG,ERXUNHUANLIULIANGDEQUEDINGLAIYUANYUGONGREFUHE;SHUIBENGDEYANGCHENGQUJUEYUREWANGDEYANCHENGYALISUNSHI,XUYAOJINXINGSHUILIJISUANFANGKEDECHU。YUANLIREYUANSHEZHIBUSHUIDINGYADIANYUREYUANCHANGNEISHEZHIBUSHUIDINGYADIANZAISHUIBENGYANGCHENGSHANGYOUHENDAQUBIE,SHEJIGUIFANBINGWEIJICHUMINGQUEDEGUIDING。XIAMIANDUISHEBEIDEZHISHUINENGLI、LIULIANGHEYANGCHENGCANSHUFENBIEJINXINGLUNSHU。

    3.1制水能力、水泵流量参数的确定

澳门足彩     3.1.1GONGREFUHE

澳门足彩     GENJUGUOJIA《CHENGSHIRELIWANGSHEJIGUIFAN》CJJ34-2002ZHONGDEGUIDINGHE《MINYONGJIANZHUJIENENGSHEJIBIAOZHU》(CAINUANJUZHUJIANZHUBUFEN)JGJ26-95,JIEHEHANDANSHIDEJIANZHUWUDESHIJIJIEGOUJUTIQINGKUANGZONGHEKAOLV,JIANZHUMIANJIHAOREZHIBIAO,XUANDINGWEI:JUZHU50W/m2,GONGJIAN70W/m2。

澳门足彩     GELEIJIANZHUWUDEZONGHECAINUANREZHIBIAOAN55W/m2JINXINGJISUAN。

澳门足彩     HANDANSHINANBUMATOUDIANCHANGGONGREQUYUXIANGUANWANGYIJIBENJIANCHENG,GENJUYIJIANCHENGGUANWANGFUSHELUXIANJISHIJIYUNXINGQINGKUANG,NANBUQUJIEXIANHUADINGWEIBEIZHIHEPINGLU,QITAJIEXIANBUBIAN。GENJUCIYUANZETONGJI:HANDANSHINANBUQUGONGGONGJIANZHU、MINYONGZHUZHAIXIANDANGNIANGONGNUANMIANJIYUE374WANPINGFANGMI,GENJUREYUANZUIDAGONGRELIANGJISUANCHUZUIZHONGGONGREMIANJIWEI1047.7WANPINGFANGMI。

    3.1.2ZHISHUINENGLIHEBUSHUIDINGYASHUIBENGLIULIANGCANSHUDEQUEDING

澳门足彩     ZHISHUISHEBEIDEXUANXINGZHUYAOKAOLVYICIREWANGBUSHUILIANG,GENJU《CHENGSHIRELIWANGSHEJIGUIFAN》CJJ34-2002GUIDING:BISHIRELIWANGBUSHUIZHUANGZHIDELIULIANG,BUYINGXIAOYUGONGREXITONGXUNHUANLIULIANGDE2%;SHIGUBUSHUILIANGBUYINGXIAOYUGONGREXITONGXUNHUANLIULIANGDE4%。YINCIZHISHUISHEBEILIULIANGDEXUANZEJUNYINGANZHAOZONGXUNHUANLIULIANGDE4%JINXINGXUANXING。

    ZONGXUNHUANSHUILIANGSHIGENJUREFUHEJISUANDE。

    YIJIWANGSHEJIGONGHUISHUIWENDUWEI:130℃/70℃;

澳门足彩     GONGHUISHUILIULIANG:

    G=3.6[Q/c(t1-t2)]

澳门足彩     SHIZHONGG——RELIWANGSHEJILIULIANG(t/h);

    Q——SHEJIREFUHE(kW);

澳门足彩     c——SHUIDEBIRERONG[kJ/(kg·℃)];

澳门足彩     t1——RELIWANGGONGSHUIWENDU(℃);

    t2——RELIWANGHUISHUIWENDU(℃)。

    JISUANJIEGUOJIANBIAO-1

    XITONGXUNHUANSHUILIANGWEI8265.7t/h,GENJU《CHENGSHIRELIWANGSHEJIGUIFAN》BISHIRELIWANGBUSHUIZHUANGZHIDELIULIANGBUYINGXIAOYUGONGREXITONGXUNHUANLIULIANGDE2%,SHIGUBUSHUILIANGDE4%,YINCIXITONGBUSHUILIANGWEI165.3t/h,SHIGUBUSHUILIANGWEI330t/h。BUSHUIDIANSHEZONGHUISHUIMUGUANSHANG,REWANGBUSHUICAIYONGRUANHUASHUI,ZILAISHUIJINGGUORUANHUAJINRURUANHUASHUICHI,ZAIYOUBIANPINBUSHUIBENGJIAYAJINRUXITONG。

    3.1.3ZHISHUISHEBEIXUANZE

    3.1.3.1SHUIYUANJISHUIZHI

澳门足彩     SHUIYUAN:SHIZHENGZILAISHUI,YALI0.22-0.26MPa

    SHUIZHI:

    XUANFUWU:WU

    ZONGYINGDU:365mg/L

    PH(25℃)?8.04

澳门足彩     3.1.3.2SHUICHULIXITONG

    BUSHUISHUIZHIBIAOZHUN,GENJU《CHENGSHIRELIWANGSHEJIGUIFAN》:

    XUANFUWU?XIAOYUHUODENGYU5mg/L

    ZONGYINGDU?XIAOYUHUODENGYU30mg/L

    HANYOULIANG?XIAOYUHUODENGYU2mg/L

澳门足彩     PH(25℃)?7-12

澳门足彩     3.1.3.3XITONGXUANZE

    GENJUfyjymy.comSHUIYUANSHUIZHIJI《CHENGSHIRELIWANGSHEJIGUIFAN》ZHONGDUIBUSHUISHUIZHIDEYAOQIU,SHUICHULIXITONGXUANZE:YUANSHUI→NALIZIJIAOHUANQI→RUANHUASHUICHI→BUSHUIXITONG。

澳门足彩     3.1.3.4SHEBEIXUANZE

    SHUICHULIJISHUIGUANDAOXUKEFUDEYALIWEI:0.1MPa(NALIZIJIAOHUANQI)+0.02MPa(GUANDAO)+0.03(GAOCHA)=0.15MPa,YINZILAISHUIYALI0.22~0.26MPa>0.15MPa,YINCIBUSHEYUANSHUIJIAYABENG。

GENJUSHUICHULILIANGHEYUANSHUISHUIZHI,XUANZEФ2500NALIZIJIAOHUANQI3TAI,2YONG1BEI,DANTAISHEBEICHULILIANG114.3t/h,GONGZUOZHOUQI20XIAOSHI。

    3.2补水定压泵扬程参数的确定

    130℃RESHUIDEQIHUAYALIWEI176kPa,YINCIXUNHUANSHUIBENGYUNXINGSHI,XUNHUANSHUIBENGRUKOUCHUDEYALIBUDIYU200kPa(XIANGDUIYUSHOUZHANDIMIANBIAOGAO)。ERSHIJIBUSHUIDINGYADIANSHEZHIZAIYUANLIREYUANCHANGDEWEIZHI,GAIDIANDEYALISUILIULIANGDEBIANHUASUISHICHUYUBIANHUAZHIZHONG,YINCISHUIBENGYANGCHENGXUANZESHIZHEIXIANGGONGCHENGDEZHONGDIAN,YESHINANDIAN。

澳门足彩     3.2.1SHUILIJISUAN

    YOUYUBUSHUIDINGYADIANYUANLIREYUANCHANG,WOMENXUYAOGENJUXUNHUANLIULIANGDEBIANHUAJINXINGSHUILIJISUAN,JISUANCHUZIBUSHUIDINGYADIANZHIREYUANCHANGDEYALISUNSHI,RANHOUDAOTUICHUBUSHUIDINGYADIANDEYALI。SHUIBENGYANGCHENGDEXUANZEJIYAOKAOLVDANGQIANDEXUYAOYEHAOKAOLVZUIZHONGGONGREFUHESHIDEXUQIU。

澳门足彩     SHUILIJISUANGONGSHI:

澳门足彩     △P=(1+α)R·L

澳门足彩     SHIZHONG:R——GUANDAOBIMOZU,Pa/m;ZHUGANGUANBIMOZUGENJUXUNHUANLIULIANGZAIGUIFANZHONGCHADE;

    L——GUANDAOPINGMIANZHANGDU,m;

    α——JUBUZULIYUYANCHENGZULIDEBIZHI,GANXIANQU0.2。

澳门足彩     GENJUYISHANGTIAOJIANJINXINGSHUSONGGANXIANDEZULISUNSHIJISUAN。JIEGUOJIANBIAO-2:

澳门足彩     3.2.2BUSHUIBENGYANGCHENGQUEDINGHEXUANXING

    REWANGDEJIAYAFANGSHIYOUZHONGJIBENGZHAN、FENBUSHIMODUANJIAYADENGFANGSHI,YUANLIREYUANCHANGQUDEBUSHUIDINGYADIANSHUIBENGYANGCHENGBUYONGKAOLVQITAYINSU,ZHIJISUANXUNHUANSHUIBENGXIRUKOUYAOQIUYALIJIASHANGBUSHUIDIANZHIXUNHUANSHUIBENGDEYANCHENGZULISUNSHI,TONGSHIKAOLVMATOUDIANCHANGDISHIBIBUSHUIDINGYADIANGAO10MI,SANZHEXIANGJIAJIKE。YINCIDINGYADIANGUANDAONEIZUIDAYALIYINGWEI:

澳门足彩     P=h+△P+Ps

    SHIZHONGP——BUSHUIDINGYADIANYALIMPa;

    h——BUSHUIDINGYADIANYUREWANGXUNHUANSHUIBENGZHIJIANDEGAOCHA,m;

    △P——HUISHUIGUANYANCHENGZULISUNSHIMPa;

    Ps——SHUIBENGXIRUKOUYALI

    ZUIZHONGXUANBUSHUIBENG:Q=400m3/h,H=75m。WEILEGENGJIAHELIBUZHI,BAOZHANGANQUANBUSHUI,JIEYUEDIANHAO,BUSHUIDINGYABENGSHEZHIWEI4TAI,JIETIPEIZHI:

澳门足彩     Q=200m3/h,H=75mYITAI;

澳门足彩     Q=100m3/h,H=75mLIANGTAI;

    Q=25m3/h,0H=75mYITAI。

    3.3远离热源补水定压点控制方案

澳门足彩     REWANGYUNXINGDEWENDINGXINGZHUYAOYILAIBUSHUIBENGDINGYADEWENDINGXING,SHEBEIXUANXINGQUEDINGZHIHOUZUIGUANJIANDEJIUSHIKONGZHIFANGANDEZHIDING。DUIYUREYUANCHANGYALIDEQUZHIWOMENCAIQUXIANCHANGSHEZHIYALICHUANGANQI,CAIYONGGPRSTONGXUNFANGSHIYUANCHUANZHIBUSHUIDINGYADIAN。

    BUSHUIDINGYASHUIBENGCAIYONGKONGZHIQIJIABIANPINJINXINGKONGZHI,ZAIXIANCHANGSHEZHIGONGKONGJICAIYONGDCSXITONGJINXINGZONGHESHUJUCAIJIHEKONGZHI。GENJUCEDIANHUISHUIYALIDEBIANHUAKONGZHIBIANPINQIPINLVSHIXIANSHUIBENGZIDONGKONGZHI,SHIXIANGUANDAOYALITUBIAN、RUANSHUICHIYEWEIDENGGEZHONGXINHAODEBAOJINGHELIANSUOCHULI。DANKAOLVYUANJULICHUANSHUXINHAODELIANXUCHUANSHUANQUANXING,WOMENBINGMEIYOUZHIJIEYUANCHENGXINHAOJINXINGKONGZHI,ZHISHIDUIYUANCHENGXINHAOJINXINGLEXIANSHI,RENGONGSHURUMUBIAOYALIZHIZIDONGKONGZHIBIANPINQIPINLV,ZAIGENJUYUANCHUANXINHAOJINXINGJIAOZHENG。

澳门足彩     BENXIANGMUYUNXINGCHUQIYOUYUXUNHUANLIULIANGMEIYOUDAODAZUIZHONGFUHE,YINCIBUSHUIDINGYADIANDEYALIYEBUXUYAOTAIGAO,CAIQUZIDONGBIANPINDEFANGSHIJIANGDIYANGCHENGYUNXING,KEMANZUYUNXINGYAOQIU。RUGUOHAIXIANGJIEYUEDIANHAO,CHUQISHIKEYIGENGHUANDIYANGCHENGSHUIBENGYUNXINGJIKEMANZUXUQIU。

    4、结论

    HANDANSHIRELIGONGSINANBUREWANGYUANLIREYUANSHEZHIDEBUSHUIDINGYADIANYIYUNXINGSANGECAINUANQI,YUNXINGPINGWEN。ZHEIZHENGMINGYUANLIREYUANDIANSHEZHIBUSHUIDINGYADIANSHIKEXINGDE。YUANLIREYUANDIANSHEZHIBUSHUIDINGYADIANDEGUANJIANSHIBUSHUIDINGYASHUIBENGYANGCHENGDEQUEDINGHEYUNXINGDIAOJIE。


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