南京大学化工学院仪器气体管道工程产品概述：

南京大学化工学院仪器气体管道工程集(ji)(ji)(ji)中(zhong)供(gong)(gong)(gong)(gong)(gong)(gong)气(qi)(qi)系统(tong)作(zuo)为(wei)气(qi)(qi)体(ti)(ti)储存(cun)、调压、输送及(ji)供(gong)(gong)(gong)(gong)(gong)(gong)应具有以下(xia)几个优点(dian)：一是集(ji)(ji)(ji)中(zhong)供(gong)(gong)(gong)(gong)(gong)(gong)气(qi)(qi)系统(tong)将(jiang)气(qi)(qi)源(yuan)（钢(gang)瓶(ping)）集(ji)(ji)(ji)中(zhong)在气(qi)(qi)瓶(ping)储存(cun)间，采用(yong)管路系统(tong)将(jiang)气(qi)(qi)送到所需的工(gong)作(zuo)地点(dian)，再将(jiang)供(gong)(gong)(gong)(gong)(gong)(gong)气(qi)(qi)终端进(jin)行(xing)分流。因此(ci)工(gong)作(zuo)地点(dian)看不到气(qi)(qi)瓶(ping)，显(xian)得(de)规范、整洁(jie)。二是结构紧凑(cou)、安(an)装(zhuang)方便(bian)、操作(zuo)简单(dan)；三是集(ji)(ji)(ji)中(zhong)供(gong)(gong)(gong)(gong)(gong)(gong)气(qi)(qi)系统(tong)更(geng)容易进(jin)行(xing)监(jian)控(kong)。因此(ci)采用(yong)集(ji)(ji)(ji)中(zhong)供(gong)(gong)(gong)(gong)(gong)(gong)气(qi)(qi)系统(tong)进(jin)行(xing)供(gong)(gong)(gong)(gong)(gong)(gong)气(qi)(qi)更(geng)安(an)全、更(geng)规范、更(geng)可靠。科望达主(zhu)要提供(gong)(gong)(gong)(gong)(gong)(gong)氧(yang)气(qi)(qi)、氢气(qi)(qi)、氦气(qi)(qi)、氮气(qi)(qi)、乙(yi)炔(gui)、压缩空气(qi)(qi)等气(qi)(qi)体(ti)(ti)的集(ji)(ji)(ji)中(zhong)供(gong)(gong)(gong)(gong)(gong)(gong)气(qi)(qi)系统(tong)设计(ji)及(ji)管路系统(tong)安(an)装(zhuang)。

一、南京大学化工学院仪器气体管道工程技术要求

1、气瓶间

①气瓶间应采用(yong)300mm以(yi)上钢筋混凝土防(fang)爆(bao)墙，遮(zhe)阳(yang)防(fang)晒，并安(an)装防(fang)爆(bao)门，泄露窗。

②室内地面应(ying)有防(fang)火花、防(fang)静电措施(shi)；室内电气设(she)备应(ying)具备防(fang)爆功(gong)能。

③通风良好(hao)，室内应安装排气(qi)扇(shan)。

④可燃气体(ti)钢瓶（氢气、乙炔）与助燃气体(ti)（氧(yang)气）应(ying)隔开放置。

⑤气瓶间(jian)要设置报警系统(tong)

2、工作间(jian)

①所有管道要统(tong)筹(chou)规划、集中(zhong)布置(zhi)、方(fang)(fang)便(bian)安装、便(bian)于(yu)操作、检修方(fang)(fang)便(bian)。

②所有工艺管道要(yao)设(she)置(zhi)切断(duan)阀(fa)，并根据需要(yao)设(she)置(zhi)压(ya)力表、温度计、流(liu)量计、过(guo)滤器(qi)和(he)减压(ya)阀(fa)，阀(fa)门和(he)仪表要(yao)设(she)置(zhi)在便于(yu)观察和(he)检(jian)修(xiu)的地(di)方。

③可燃(ran)气体管道要沿(yan)墙明线铺设，方便安装和检修。

④使(shi)用钢瓶(ping)气管道的(de)设备(bei)台应(ying)离墙布置，且留(liu)出不小于600mm的(de)检修(xiu)空间。

⑤氢(qing)气管道应采用(yong)焊接(jie)连(lian)接(jie)，不能采用(yong)螺纹连(lian)接(jie)和使用(yong)闸阀。

⑥供气系统采用(yong)二(er)级减压方(fang)式进行供气，气体由15Mpa减到1.5Mpa后(hou)再输入到各实验(yan)室。

二、用材

1、管(guan)道、球(qiu)阀、三(san)通和卡套均采用(yong)316L不(bu)(bu)锈钢，高压(ya)软管(guan)为不(bu)(bu)锈钢波纹管(guan)，在高压(ya)软管(guan)的进气(qi)(qi)端配置单向阀，防(fang)止更(geng)换气(qi)(qi)瓶(ping)时，软管(guan)内的气(qi)(qi)体(ti)外(wai)泄(xie)，又可防(fang)止外(wai)界(jie)的空气(qi)(qi)混(hun)入气(qi)(qi)路中，影响(xiang)气(qi)(qi)体(ti)纯度。

2、管道系(xi)统：所有气体管道均采用B*别316L不锈钢管，在管路上有过滤杂质(zhi)和水分的装置。

3、管道(dao)的连接(jie)：汇排流、终(zhong)端均采用卡套(tao)连接(jie)，便于减压器(qi)和(he)阀(fa)门的维护管理。

4、终(zhong)(zhong)端(duan)：在(zai)每台仪器之(zhi)前，配(pei)置截止(zhi)阀和(he)二级减压(ya)器，截止(zhi)阀控制每个(ge)气路的开启(qi)和(he)关闭，减压(ya)器用于显示和(he)调整每个(ge)终(zhong)(zhong)端(duan)的压(ya)力。

5、气(qi)体管道每间隔1.5米(mi)采用管码支架固定(ding)。

6、整个(ge)气路安装完毕后(hou)，对(dui)整个(ge)系统做压(ya)(ya)力测试，压(ya)(ya)力24小时(shi)后(hou)无下降视(shi)为(wei)合格。