- 1、本文档共11页,可阅读全部内容。
- 2、有哪些信誉好的足球投注网站(book118)网站文档一经付费(服务费),不意味着购买了该文档的版权,仅供个人/单位学习、研究之用,不得用于商业用途,未经授权,严禁复制、发行、汇编、翻译或者网络传播等,侵权必究。
- 3、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。如您付费,意味着您自己接受本站规则且自行承担风险,本站不退款、不进行额外附加服务;查看《如何避免下载的几个坑》。如果您已付费下载过本站文档,您可以点击 这里二次下载。
- 4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等,请点击“版权申诉”(推荐),也可以打举报电话:400-050-0827(电话支持时间:9:00-18:30)。
查看更多
word完美格式
精心整理 学习帮手
燕京理工学院
YANCHING INSTITUTE OF TECHNOLOGY
外文文献原稿和译文
学院:机电工程学院
专业:机械工程
学号:130310208
姓名: 张磊
指导教师:王续明
2017 年 3 月
外文文献原稿和译文
原 稿
The water supply system is the national production and life indispensable important one annulus. The traditional method of water supply area, water pollution, infrastructure investment, but the main drawback is that water can not be kept constant, causing part of the equipment can not work normally. Variable frequency speed control technology is a new mature AC motor stepless speed regulating technology, its unique excellent control performance is widely applied to the speed control field, especially in water supply industry. Due to the safety in production and the water quality of special needs, for constant pressure water supply with the stringent requirements, so the frequency control technology has been more in-depth application. Constant pressure water supply ways to advanced technology, constant pressure, convenient operation, reliable operation, energy saving, high degree of automation, in pump station water supply can perform the following functions:
(1) to maintain constant pressure;
(2) the control system can be manual or automatic operation;
(3) a plurality of pump automatic switch operation;
(4) system of sleep and wake, when people stop when water, the system is in a sleep state, until the water demand automatically wake;
(5) adjusts the PID parameters on line;
(6) pump unit and circuit protection detection alarm, signal display.
The actual pressure of the pipe network feedback and a given pressure were compared, when the pressure of a pipe network is low, increase the output of frequency converter, pump speed faster, water supply quantity increases, forcing the pipe network pressure rise. Vice pump speed slow down, reduce the water supply pipe network pressure drop,, to keep the constant pressure water supply.
System hardware structure
System uses a pressure sensor, PLC an
您可能关注的文档
- 高炉炼铁工程师题库_计算题171页.doc
- 高一必修四三角函数测试题和答案.doc
- 高一数学必修4三角函数练习试题和答案.doc
- 高中物理实验复习试题集.doc
- 高中物理选修3_3综合训练.doc
- 各种汽车品牌和报价.doc
- 各种设备维护保养单(一保).doc
- 各种施工工艺标准[详].doc
- 工程方案_标准3_隧道洞口布置标准(定稿).doc
- 工程管理_毕业论文正稿.doc
- 甘肃省白银市会宁县第一中学2025届高三3月份第一次模拟考试化学试卷含解析.doc
- 2025届吉林市第一中学高考考前模拟生物试题含解析.doc
- 四川省三台县芦溪中学2025届高三下第一次测试生物试题含解析.doc
- 2025届江苏省启东市吕四中学高三适应性调研考试历史试题含解析.doc
- 浙江省宁波市十校2025届高三二诊模拟考试历史试卷含解析.doc
- 甘肃省甘南2025届高考生物必刷试卷含解析.doc
- 河北省石家庄市一中、唐山一中等“五个一”名校2025届高考历史四模试卷含解析.doc
- 江西省南昌市进贤一中2025届高考生物考前最后一卷预测卷含解析.doc
- 甘肃省白银市会宁县第四中学2025届高三第二次模拟考试历史试卷含解析.doc
- 宁夏银川市宁夏大学附属中学2025届高考化学押题试卷含解析.doc
文档评论(0)