山東冷庫造價(jià)節(jié)能控制系統(tǒng)的主要特點(diǎn)以及存在的問題, 冷庫經(jīng)過了原始的機(jī)械制冷、氨液設(shè)備制冷、氟設(shè)備制冷一直到現(xiàn)在環(huán)保節(jié)能冷庫，一步步走向今天更節(jié)能、更環(huán)保、更有效的自動化管理。
The main characteristics of energy saving control system and the existing problems of cold storage after the original mechanical refrigeration equipment, refrigeration equipment, liquid ammonia fluorine refrigeration until now, environmental protection and energy saving refrigerator, a step toward today more energy-saving, more environmental protection and more effective automation management.
1、壓縮機(jī)三角起動時(shí)對壓縮機(jī)設(shè)備以及電網(wǎng)沖擊，影響設(shè)備使用壽命;而且，設(shè)備起動完成后只能全速運(yùn)行，通過調(diào)整回氣閥門(蒸發(fā)壓力)開口度來控制制冷能力。造成電耗浪費(fèi)，設(shè)備故障率較高，運(yùn)行的經(jīng)濟(jì)性差。
1, the compressor delta starting the compressor equipment as well as the impact of the power grid, affect the service life of the equipment; moreover, equipment starting operation only after the completion of full speed, by adjusting the air return valve (evaporation pressure) to control the cooling capacity of opening. The power consumption is wasted, the equipment failure rate is high, and the operation economy is poor.
2、冷庫設(shè)備自動控制水平低，完全依賴于人工操作，而人的主觀能動性與技術(shù)水平等，因人因時(shí)等都有很大的差異，難以達(dá)到最佳控制。
2 cold storage equipment, low automatic control level, completely rely on manual operation, and people's subjective initiative and technical level, because when there are great differences, it is difficult to achieve optimal control.
3、各分支庫根據(jù)儲物不同或出入庫情況變化以及保溫性能差異，難以做到各分支庫根據(jù)自身需求，分別自動調(diào)節(jié)制冷量，對原不需要制冷的分支庫造成過度制冷的浪費(fèi)現(xiàn)象;蒸發(fā)器除霜以及冷卻水泵運(yùn)行難以達(dá)到最佳效果。
3, according to the different branches of the library storage or storage conditions change and insulation performance differences, difficult to achieve various branches of the library according to their own needs, which automatically adjust the cooling capacity of the original, without Branch refrigeration caused excessive cooling waste; defrosting and cooling water pump operation is difficult to achieve the best effect.
4、冷庫的自控系統(tǒng)采用S7 PLC控制與編程;通過MPI通訊實(shí)現(xiàn)與上位機(jī)之間的數(shù)據(jù)通訊;對于大型冷庫，采用Profibus-dp通訊方式，與各分支冷庫、冷卻間控制設(shè)備實(shí)現(xiàn)全數(shù)據(jù)交流;
Automatic control system of 4 cold storage using S7 PLC control and programming; communication through MPI data communication between the host computer; for large cold storage, the use of Profibus-dp communication, and each branch of the cold storage, cooling control data exchange equipment;
5、對調(diào)節(jié)站的進(jìn)氣閥改為電動機(jī)構(gòu)，增設(shè)各類所需的傳感器，實(shí)現(xiàn)PLC自動控制。
5. The intake valve of the control station is changed into an electric mechanism, and various types of sensors are added to realize the automatic control of the PLC.
6、制冷壓縮機(jī)采用交流變頻調(diào)速裝置拖動;通過modbus通訊與PLC實(shí)現(xiàn)全數(shù)據(jù)交換以及控制;
6. The refrigeration compressor is driven by AC frequency conversion device. The whole data exchange and control are realized by Modbus communication and PLC;
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