plc在水源热泵空调系统中的应用.pdf

辽宁石油化工大学继续教育学院论文 PLC 在水源热泵空调系统中的应用 摘 要 常紧张的阶段，如何节约能源能为了一项新的课题。而水源热泵空调技术正是这种情况下 的产物。热泵采用电能驱动，从低温热源中吸取热量，并将其传输给高温热源以供使用，传输 到高温随着现代工业的迅猛发展，自动化机械有了越来越广泛的应用，同时世界的能源也进入 了非热源中的热量不仅大于所消耗的能量，而且大于从低温热源中吸收的能量，从而达到节能 的目的。 论文研究了水源热泵空调系统的 PLC 控制。文章首先对水源热泵技术进行了概述，介绍了 水源热泵技术的发展现状及前景。然后根据水源热泵中央空调系统的特点，分析和研究船舶热 泵系统的工作原理，并构建了水源热泵控制系统结构的组成和控制方案。文中对输入、输出信 号进行归纳，并据此设计出 PLC 电气控制原理图，并合理选用PLC。接着编写了语句表与梯形 图。 通过 PLC 来控制热泵系统，不仅可以通过编程实现复杂的逻辑控制，而且可以很大程度上 简化硬件接线，提高控制系统的可靠性，便于实现智能控制。并且结合变频器节能省电，符合 国家提倡的节能减排，建设节能型社会的需求。 关键词：水源热泵；空调；PLC 控制 辽宁石油化工大学继续教育学院论文 Abstract With the rapid development of modern industry and automated machinery has been more widely used, the worlds energy into the very tight stage, how to save energy to a new subject. Water source heat pump technology is in this case the product. Water-heat pump absorbs heat from cryogenic heat source, and sends it to high-temperature source by using electric energy. The quantity of heat sent to high-temperature heat source is not only larger than the consumed heat, but also larger than that absorbed from cryogenic heat source, thus reaching the aim of saving energy. The article first described the water source heat pump technology, to understand the status and prospects of development of water source heat pump. Then according to the characteristics of the water source heat pump central air conditioning system, analysis and research ship heat pump system works, and build water source heat pump control system, the composition and control programs. Article to the design of input and output signals, and accordingly design the PLC electrical control schematics. And accordingly the design selection of the PLC, and then write the stat