水行业中流量控制的好处
流量控制在水工业内的参与可以分为两个主要区域：饮用水和废水。这两个领域对我们所有人的生活都是必不可少的。当我们打开水龙头时，饮用水的可用性以及如何管理污水和污水是我们都依靠的关键服务。执行器是饮用和废水应用中的关键设备。本文将研究这些应用程序的要求和挑战，并将重点介绍流程控制设备如何使世界各地的水站平稳运行和成功的示例。
什么是流控制？
执行器操作和移动阀门，是流量控制中的设备的关键项目。它们可以通过液压或气动控制。有效的流量控制有助于提高效率并提高供水。水中的许多操作员需要阀门和阻尼器在设定位置之间反复移动。他们参与了各种应用，包括过滤，脱盐，分配，水坝，水库和灌溉系统。执行器的能力使过程更有效，最大程度地减少废物并减少能源消耗。
Electric actuators are common within the wider water industry. They provide precise operation, with repeatability and resolution. Flow control equipment within water applications must have water ingress protection to provide continuing operation and ensured reliability. Actuators within Rotork’s IQ range are environmentally sealed in the factory. They are double-sealed to IP66/68 at 20m for 10 days, protecting the internal components from water, moisture, dirt and dust. Robust, long-lasting equipment with minimal maintenance even in extreme environments is necessary within water applications. For example, in 2021 Rotork supplied IQ3 actuators to several water treatment sites in New Zealand. Previously, the sites had pneumatic actuators but required environmentally sealed electric actuators because of the damp, chlorinated atmosphere. The new actuators provide control of filters, as well as the chemical dosing and storage of potable water. Electric actuators have another benefit for operators: they do not need power compressors to provide an air supply to pneumatic actuators.
Potable water
有不同的方法来创建适合饮酒的水。在海水脱盐厂和淡水处理厂的几乎所有过程控制应用中，从进口到分配都可以找到流量控制。过滤是这些应用程序中的关键过程。经过部分处理的水通过菌株（例如沙子或无烟煤）的培养基。使用了不同类型的过滤器，例如简单的慢砂过滤器或快速重力砂过滤器。流量控制在过滤过程中至关重要。在2020年升级的一部分中，将300个智商执行器安装在美国水过滤厂。他们在芝加哥的尤金·索耶（Eugene Sawyer）净水厂运营12到30英寸the facility’s sand filters.
Wastewater treatment
The treatment of wastewater and its future discharge or reuse (such as within irrigation systems) requires specialist equipment and precise control to comply with strict environmental regulations. The use of actuators and subsequent automation ensures efficient effluent treatment and protection of the environment. Treated water is often returned to the sea or other water sources, subject to local policies. Flow control is central to this process. In 2020 electric CK actuators were ordered to control the flow at Ergene Basin Deep Marine Discharge Project, Turkey, one of the longest sea discharge lines in Europe. The electric actuators operate penstocks at the treatment plants. It is essential that actuators in this context can reliably operate within high temperatures and demanding environments.