
Probe into Ventilation and Air Conditioning of Sea Island Pumped Storage Power Stations
Fang GONG, Xin-ping WU, Jun TENG, Jian-qiu LI, Zi-fei SONG
Probe into Ventilation and Air Conditioning of Sea Island Pumped Storage Power Stations
Pumped storage power station has great development prospects. Due to the special conditions of marine environment, a pumped storage power station in the island is facing various problems. This paper takes the underground plant in the site of a southern island as an example to introduce its designing philosophy of ventilation system, ventilation process, salt spray control and confronted problems. Besides, it analyzes countermeasures for problems from the aspects of air process, air speed and air intake to provide references for the design of ventilation system of the pumped storage power station in the island.
sea island pumped storage power station / ventilation system / ventilation process / salt spray control {{custom_keyword}} /
Tab.1 Environmental salt spray parameter grade characteristics表1 环境盐雾参数等级特征 |
等级 | 盐雾含量/(mg·m-3) | 盐雾沉降率(干片法)/(mg·m-2·d-1) |
---|---|---|
S1 | ≤0.04 | ≤0.10 |
S2 | ≤0.15 | ≤1.25 |
S3 | ≤1.0 | ≤25.0 |
SX | >1.0 | >25.0 |
Tab.2 Salt mist removal technology summarizes its salt mist purification effect表2 除盐雾技术总结其盐雾净化效果 |
除盐雾技术 | 除雾原理 | 可除盐雾粒径 | 除盐雾效率 | 评价 | ||
---|---|---|---|---|---|---|
分离除盐雾技术 | 沉降除雾技术 | 雾化喷淋除盐 | 分离沉降-拦截 | 任何粒径 | - | 维运复杂,费用高,需额外引入水汽,使环境湿度增大,不利于设备防腐防护。 |
重力沉降 | >250 um | - | 沉降速率缓慢,沉降下来的盐雾粒子易重新进入气流中。 | |||
波纹板除雾 | ≥10 um | 95%以上 | 结构简单、处理量大,但能分离的液滴直径比较大,不适于一些过滤要求较高的场合 | |||
离心力除盐雾技术 | 旋风过滤器 | ≥3 um | - | 设备结构复杂,操作复杂。 | ||
新型离心除盐雾机 | 1 um及以上 | - | 可分离1 um以下盐雾粒子,但设备结构 复杂。 | |||
旋流板除雾器 | ≥30 um | 90%~99% | 除雾效率高、结构简单、操作弹性大等特点,但其分离效果不稳定,且体积比较大。 | |||
超重力除盐雾技术 | >10 um | 99%以上 | 可分离盐雾粒径较大,设备加工工艺高、结构复杂。 | |||
电除盐雾技术 | 电除雾技术 | 吸附 | 任意粒径 | - | 除雾效率高,但设备结构复杂,且体积 较大。 | |
静电除雾技术 | 任意粒径 | 94%以上 | ||||
过滤除盐雾技术 | 传统过滤除盐雾技术 | 吸附+拦截 | ≥0.5 um | 90%~99% | 除雾效率高、结构简单。 |
Tab.3 Environmental temperature and humidity level characteristics表3 环境温湿度等级特征 |
环境温湿度等级 | 最高环境温度/℃ | 最大环境温度变化率/(℃·h-1) | 平均相对湿度/% | 最大相对湿度/% | 相对湿度变化率/(%·h-1) |
---|---|---|---|---|---|
H1 | ≤40 | ≤5 | ≤50 | ≤60 | ≤5 |
H2 | ≤50 | ≤10 | ≤60 | ≤70 | ≤10 |
H3 | ≤60 | ≤10 | ≤70 | ≤80 | ≤10 |
HX | - | - | - | - | - |
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