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加油站避雷针怎么设置?

浏览:31次 | 提问时间: 08-01 03:59
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5个答案
时光笑我太孤独 08-01 04:00

按这个要求做接地极即可,如果阻值达不到4欧姆,可增加接地极的长度。然后将避雷针引下线焊到该接地极即可。希望帮助你呢!

演戏天分 08-01 04:08

您好,很高兴回答您的问题,希望我的回答对你有帮助。设置方法:(1)*避雷针与被保护物之间应有不小于5m距离,以免雷击避雷针时出现反击。*避雷针宜设*的接地装置,与接地网间地中距离不小于3m。(2)35KV及以下高压配电装置构架及房顶上不宜装设避雷针。装在构架上的避雷针应与接地网相连,并装设集中接地装置。(3)变压器的站型构架上不应安装避雷针。(4)避雷针及接地装置距离道路及出口距离应大于3m,否则应铺碎石或沥青面5~8cm厚,以保人身不受跨步电压危害。(5)严禁将架空照明线、电话线、广播线、天线等装在避雷针或构架上。(6)如在*避雷针或构架上装设照明灯,其电源线必须使用铅皮电缆或穿入钢管,并直接埋入地中长度10m以上。

Exstence刺 08-01 04:17

我觉得采用“避雷针只保护油罐区,其他区域设避雷带”比较好一些。27米的避雷针就一个小加油站来说不太合理。1   装有阻火器的地上卧式油罐的壁厚和地上固定顶钢油罐的顶板厚度等于或大于4mm时,不应装设避雷针。铝顶油罐和顶板厚度小于4mm的钢油罐,应装设避雷针(网)。避雷针(网)应保护整个油罐。2   浮顶油罐或内浮顶油罐不应装设避雷针,但应将浮顶与罐体用2根导线做电气连接。浮顶油罐连接导线应选用横截面不小于25mm2的软铜复绞线。对于内浮顶油罐,钢质浮盘油罐连接导线应选用横截面不小于16mm2的软铜复绞线;铝质浮盘油罐连接导线应选用直径不小于1.8mm的不锈钢钢丝绳。3   覆土油罐的罐体及罐室的金属构件以及呼吸阀、量油孔等金属附件,应做电气连接并接地,接地电阻不宜大于10Ω。

浅念 08-01 04:25

石油库设计规范Code   for   design   of   oil   depotGB   50074-200214.2   防雷14.2.1   钢油罐必须做防雷接地,接地点不应少于2处。14.2.2   钢油罐接地点沿油罐周长的间距,不宜大于30m,接地电阻不宜大于10Ω。14.2.3   储存易燃油品的油罐防雷设计,应符合下列规定:1   装有阻火器的地上卧式油罐的壁厚和地上固定顶钢油罐的顶板厚度等于或大于4mm时,不应装设避雷针。铝顶油罐和顶板厚度小于4mm的钢油罐,应装设避雷针(网)。避雷针(网)应保护整个油罐。2   浮顶油罐或内浮顶油罐不应装设避雷针,但应将浮顶与罐体用2根导线做电气连接。浮顶油罐连接导线应选用横截面不小于25mm2的软铜复绞线。对于内浮顶油罐,钢质浮盘油罐连接导线应选用横截面不小于16mm2的软铜复绞线;铝质浮盘油罐连接导线应选用直径不小于1.8mm的不锈钢钢丝绳。3   覆土油罐的罐体及罐室的金属构件以及呼吸阀、量油孔等金属附件,应做电气连接并接地,接地电阻不宜大于10Ω。14.2.4   储存可燃油品的钢油罐,不应装设避雷针(线),但必须做防雷接地。14.2.5   装于地上钢油罐上的*系统的配线电缆应采用屏蔽电缆。电缆穿钢管配线时,其钢管上下2处应与罐体做电气连接并接地。14.2.6   石油库内*系统的配电线路首末端需与*器件连接时,应装设与*器件耐压水平相适应的过电压保护(电涌保护)器。14.2.7   石油库内的*系统配线电缆,宜采用铠装屏蔽电缆,且宜直接埋地敷设。电缆金属外皮两端及在进入建筑物处应接地。当电缆采用穿钢管敷设时,钢管两端及在进入建筑物处应接地。建筑物内电气设备的保护接地与防感应雷接地应共用一个接地装置,接地电阻值应按其中的最小值确定。14.2.8   油罐上安装的*系统装置,其金属的外壳应与油罐体做电气连接。14.2.9   石油库的*系统接地,宜就近与接地汇流排连接。14.2.10   储存易燃油品的人工洞石油库,应采取下列防止高电位引入的措施:1   进出洞内的金属管道从洞口算起,当其洞外埋地长度超过2m(   ρ为埋地电缆或金属管道处的土壤电阻率Ω·m)且不小于15m时,应在进入洞口处做1处接地。在其洞外部分不埋地或埋地长度不足2m时,除在进入洞口处做1处接地外,还应在洞外做2处接地,接地点间距不应大于50m,接地电阻不宜大于20Ω。2   电力和*线路应采用铠装电缆埋地引入洞内。洞口电缆的外皮应与洞内的油罐、输油管道的接地装置相连。若由架空线路转换为电缆埋地引入洞内时,从洞口算起,当其洞外埋地长度超过2m时,电缆金属外皮应在进入处做接地。当埋地长度不足2m时,电缆金属外皮除在进入洞口处做接地外,还应在洞外做2处接地,接地点间距不应大于50m,接地电阻不宜大于20Ω。电缆与架空线路的连接处,应装设过电压保护器。过电压保护器、电缆外皮和瓷瓶铁脚,应做电气连接并接地,接地电阻不宜大于10Ω。3   人工洞石油库油罐的金属通气管和金属通风管的露出洞外部分,应装设*避雷针。*危险1区应在避雷针的保护范围以内。避雷针的尖端应设在*危险2区之外。14.2.11   易燃油品泵房(棚)的防霄,应符合下列规定:1   油泵房(棚)应采用避雷带(网)。避雷带(网)的引下线不应少于2根,并应沿建筑物四周均匀对称布置,其间距不应大于18m。网格不应大于10m×10m或12m×8m。2   进出油泵房(棚)的金属管道、电缆的金属外皮或架空电缆金属槽,在泵房(棚)外侧应做1处接地,接地装置应与保护接地装置及防感应雷接地装置合用。14.2.12   可燃油品泵房(棚)的防雷,应符合下列规定:1   在平均雷*日大于40d/a的地区,油泵房(棚)宜装设避雷带(网)防直击雷。避雷带(网)的引下线不应少于2根,其间距不应大于18m。2   进出油泵房(棚)的金属管道、电缆的金属外皮或架空电缆金属槽,在泵房(棚)外侧应做1处接地,接地装置宜与保护接地装置及防感应雷接地装置合用。14.2.13   装卸易燃油品的鹤管和油品装卸栈桥(站台)的防雷,应符合下列规定:1   露天装卸油作业的,可不装设避雷针(带)。2   在棚内进行装卸油作业的,应装设避雷针(带)。避雷针(带)的保护范围应为*危险1区。3   进入油品装卸区的输油(油气)管道在进入点应接地,接地电阻不应大于20Ω。14.2.14   在*危险区域内的输油(油气)管道,应采取下列防雷措施:1   输油(油气)管道的法兰连接处应跨接。当不少于5根螺栓连接时,在非腐蚀环境下可不跨接。2   平行敷设于地上或管沟的金属管道,其净距小于100mm时,应用金属线跨接,跨接点的间距不应大于30m。管道交叉点净距小于100mm时,其交叉点应用金属线跨接。14.2.15   石油库生产区的建筑物内400V/230V供配电系统的防雷,应符合下列规定:1   当电源采用TN系统时,从建筑物内总配电盘(箱)开始引出的配电线路和分支线路必须采用TN-S系统。2   建筑物的防雷区,应根据现行*标准《建筑物防雷设计规范》GB   50057划分。工艺管道、配电线路的金属外壳(保护层或屏蔽层),在各防雷区的界面处应做等电位连接。在各被保护的设备处,应安装与设备耐压水平相适应的过电压(电涌)保护器。14.2.16   避雷针(网、带)的接地电阻,不宜大于10Ω。

佐径幽敻 08-01 04:34

最好是均匀的放置到加油站的顶部,一般来说每隔5米设置一个是比较安全的,也不要安装太多,太多了会造成浪费。

保障