| 一个完整的喷灌系统 |
| 添加时间：2019/10/23 16:00:22 浏览次数： |
| 一个完整的喷灌系统一般由喷头、管网、首部和水源组成。 A complete sprinkler system is generally composed of nozzle, pipe network, head and water source. 1.喷头:喷头用于将水分散成水滴，如同降雨一般比较均匀地喷洒在种植区域。 1. Sprayer: the sprayer is used to disperse the water into water drops, which are evenly distributed in the planting area as the rainfall. 喷灌系统的喷头构造喷灌系统的喷头构造 Nozzle structure of sprinkler system 2.管网:其作用是将压力水输送并分配到所需灌溉的种植区域。由不同管径的管道组成，分干管、支管、毛管等，通过各种相应的管件、阀门等设备将各级管道连接成完整的管网系统。现代灌溉系统的管网多采用施工方便、水力学性能良好且不会锈蚀的塑料管道，如PVC管、PE管等。同时，应根据需要在管网中安装必要的安全装置，如进排气阀、限压阀、泄水阀等。 2. Pipe network: it is used to transport and distribute the pressure water to the planting area to be irrigated. It is composed of pipes with different pipe diameters, including main pipes, branch pipes and capillary pipes. Pipes at all levels are connected into a complete pipe network system through various corresponding pipe fittings, valves and other equipment. The pipe network of modern irrigation system mostly adopts plastic pipes with convenient construction, good hydraulic performance and no corrosion, such as PVC pipes, PE pipes, etc. At the same time, necessary safety devices shall be installed in the pipe network as required, such as air inlet and exhaust valves, pressure limiting valves, water release valves, etc. 3.首部:其作用是从水源取水，并对水进行加压、水质处理、肥料注入和系统控制。一般包括动力设备、水泵、过滤器、施肥器、泄压阀、逆止阀、水表、压力表，以及控制设备，如自动灌溉控制器、衡压变频控制装置等。首部设备的多少，可视系统类型、水源条件及用户要求有所增减。如在利用城市供水系统作为水源的情况下，往往不需要加压水泵。 3. The first part: it is used to take water from water source, pressurize water, treat water quality, inject fertilizer and control system. Generally, it includes power equipment, water pump, filter, fertilizer applicator, pressure relief valve, check valve, water meter, pressure gauge, and control equipment, such as automatic irrigation controller, constant pressure frequency conversion control device, etc. The number of the first equipment can be increased or decreased depending on the system type, water source conditions and user requirements. For example, in the case of using the urban water supply system as the water source, the pressurized water pump is often not needed. 4.水源:井泉，湖泊、水库，河流及城市供水系统均可作为喷灌水源。在整个生长季节，水源应有可靠的供水保证。同时，水源水质应满足灌溉水质标准的要求。 4. Water source: well spring, lake, reservoir, river and urban water supply system can be used as sprinkler water source. During the whole growing season, the water source shall be guaranteed with reliable water supply. At the same time, the water quality of water source should meet the requirements of irrigation water quality standards. |
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