New Rotork actuators go beyond the limits

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新的旋转阀执行器已安装在重要的河流和堰，以改善河流控制并确保更可靠的自动操作。

北安普敦（Northampton）的内内河（Nene）河上的贝德福德（Bedford Sluice）是北安普顿·沃什兰（Northampton Washlands）之前的主要控制结构，这是一个对环境敏感的便利设施，支持广泛的户外运动和休闲活动。贝德福德水槽上的四个径向大门调节穿过北安普敦市的河流，以防止洪水泛滥，并维持附近设施的水位，包括Nene River Navigation，Nene Whitewater独木舟课程和划船俱乐部。

从字面上看，径向门的操作超出了被替换的执行器的限制。装有机械限制开关，他们无法应对完全操作大门所需的非常长的中风。因此，安装了外部限制开关直接在门茎上操作，但是事实证明，这些开关的可靠性小于100％，并且有时会因未能及时停止门而损坏安装。

The new IQ intelligent electric actuators installed by Rotork have replaced mechanical limit switches with a Hall Effect magnetic pulse system that accurately measures and controls the stroke without the restrictions inherent in gears and switches. The system converts the actuator's output centre column rotation into an electronic signal, which is compared to position limits programmed and stored within a secure, non-volatile memory, removing any chance of a mechanical failure.

Rotork在环境局工作，已经进行了执行器现代化项目的各个方面。Rotork的专业现场服务部设计和制造了新的改编，并安装了IQ40智能执行器。旋转项目和服务公司Exeeco进行了电气安装，包括连接到遥测链接和相关面板修改。这样，在仅四个星期的时间内就完成了所有四个大门的工作。作为定制安装的一部分，执行器的手轮已被卸下，并用特殊的适配器代替了手持式液压电源包。如果在电力故障期间进行紧急操作，这将使大门能够尽快移动。

The new actuators are controlled from a level sensor positioned a short distance upstream of the installation. Signals from the level sensor trigger sequential operation of the individual gates in order to achieve accurate river level control under all ambient conditions. The computerised programme is linked by telemetry into the Environment Agency ARTS supervisory system, based at the main monitoring and control room at Peterborough. Under normal circumstances, operation of Bedford Sluice is fully automatic, but the actuators are programmed to transmit an alarm in the event of any malfunction, to facilitate immediate remedial action.