需要金幣： 1000 個(gè)金幣 |
資料包括：完整論文 |  |
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| 轉(zhuǎn)換比率：金額 X 10=金幣數(shù)量， 例100元=1000金幣 | 論文字?jǐn)?shù)：17325 |  | |
| 折扣與優(yōu)惠：團(tuán)購最低可5折優(yōu)惠 - 了解詳情 | 論文格式：Word格式(*.doc) |  |
摘要:本設(shè)計(jì)研究的是PLC在太陽能集中供熱水控制系統(tǒng)中的應(yīng)用,該系統(tǒng)可以實(shí)現(xiàn)大樓太陽能自動(dòng)化供熱水。PLC為該系統(tǒng)的總控單元。指出了系統(tǒng)硬件的構(gòu)成和系統(tǒng)軟件過程的設(shè)計(jì)。 本系統(tǒng)由水位控制系統(tǒng)，水溫控制系統(tǒng)，壓力控制系統(tǒng)，防凍控制系統(tǒng)組成。其中壓力控制系統(tǒng)是基于變頻器的供水系統(tǒng)，采用變頻調(diào)速的方式，自動(dòng)調(diào)節(jié)水泵電機(jī)的轉(zhuǎn)速，保持供水穩(wěn)定，在用水低谷時(shí)通過變頻器降低頻率，降低能耗。在用水高峰時(shí)通過變頻器增大頻率或者增加給水泵，變頻頻率根據(jù)生活用水時(shí)間及其他一些影響因素對(duì)主控PLC提供信息，對(duì)變頻器進(jìn)行調(diào)節(jié)，使水壓恒定于一定的范圍從而保證水的不間斷供給。課題利用西門子公司s7-200的PLC控制器，實(shí)現(xiàn)對(duì)系統(tǒng)各部分的自動(dòng)控制。在已有的太陽能熱水器技術(shù)的基礎(chǔ)上，采用PLC控制系統(tǒng)，實(shí)現(xiàn)熱水器內(nèi)水位水溫的控制與加熱，改善熱水器的實(shí)際使用功能，從而使太陽能熱水器水位水溫控制達(dá)到更為理想的效果，更能滿足居民樓內(nèi)用戶的實(shí)際需要。 關(guān)鍵詞： PLC；太陽能；變頻器；供熱水系統(tǒng)；自動(dòng)控制系統(tǒng)
Abstract:This design is the study of the solar water heating PLC Control System.The system can automation of building solar water heating.System for total control unit of using PLC.And introduces the working principle of solar energy water heater, process and system requirements, focus on the system hardware structure and software design of the system process The system consists of water level control system, temperature control system, pressure control system, frost control system.Pressure control system is based on a frequency converter to the water supply system, the variable frequency speed way, to automatically adjust the water pump motor speed, and keep the water supply stable in bottom water by the lower frequency, reduce the energy consumption. In the water peak by the increasing frequency or increased water pump, frequency conversion frequency according to life water time and other influencing factors on master PLC to provide information on the adjustment of frequency converter, make constant water pressure in a certain range to ensure uninterrupted supply of water.Subject adopts Siemens s7-200 PLC controller,parts of the system to achieve automatic control.On the basis of the existing solar water heater technology, using PLC control system, the water level in the water heater temperature control and heating, improve the function of water heater of actual use, so that the solar energy water heater water temperature control to achieve more ideal effect, more can meet the residential building within the user's actual needs. Keywords: PLC; Solar; Inverter; Water heater; automatic control system |
