HCBBS Forum (한국어)
Submit Chemical Projects / Find Solutions
Amplify Your Requirements on a Broader Chemical Platform *Engineering · Technology · Equipment · Solutions*
Submit Request

["

2018-11-24View Original

Thread Content

[
Reply #22018-11-24
11,
Reply #32018-11-25
{
Reply #42018-11-25
"为什么可以短时间憋泵?",
Reply #52018-11-25
"为什么可以短时间憋泵?",
Reply #62018-11-25
"、、离心泵可以憋压是因为在泵吸入管管的入口处装有止逆阀(底阀)。。从启动前必须使泵壳和和吸水管内充满水,然后启动电机使泵轴带动叶轮和水做高速旋转旋转运动水发生离心运动被甩向叶轮外刻经蜗形泵壳的流道流入水泵的压水管路。憋压后流量最小叶轮作功最小电机电流功率也最小了所以大型离心泵启动时还要先关小出口阀启动后再慢慢打开"
Reply #72018-11-25
"一般情况下止逆阀装在泵的出口处比较多。"
Reply #82018-11-26
"止回阀安装在出口口可以测到泵本身的出口压装在入口的大都是自吸泵为多见原因是当停泵后水泵内的水不会因管径过大直立引起液体下流方便二次启动时无法向泵内补水而设置的"
Reply #92018-11-26
"呵呵刚才回完帖我就想到了自吸泵!"
Reply #102018-11-26
"但是但是个人认为这个问题这样理解不是很好而是应该用用能的角度解释更为贴切些如果无限延长憋停时间机泵的动能转换的势能将会变成热能形式体现对机泵的正常运行不利而短时间憋停虽然有一定热产生但是一般可以忽略"
Reply #112018-11-26
"关阀启动其实这个就是憋泵"
Reply #122018-11-28
"短时间以内叶轮与液体摩擦产生的热量不足以让液体汽化振动增大对轴承的损害也是需要一个过程的所以离心泵可以短时间憋泵"
Reply #132018-11-28
"离心泵憋泵相当于运行在性能曲线最左端泵效率最低轴功率几乎全转化为介质的热量所以憋泵会让泵越转越热短时间憋泵不会让介质温度升高太多损坏泵零部件"

Submit a Project

**Looking for Chemical Technology, Equipment & Solutions?** No Registration Required Broader Platform Exposure | Global Chemical Service Provider Connections

Submit Request — Free Consultation

Disclaimer

This is an automated machine translation of the original thread. Some technical terms may have inaccuracies; the original text shall prevail. Click "View Original" at the top right to access the source page, which supports IP-based automatic real-time language translation. Please watch out for contact details and sales inducements to prevent fraud. All content and translations are for reference only, representing solely the poster's personal views. For enquiries, email service@hcbbs.com.