电动蝶阀是这种类型的调节阀，其截止阀是一个环形阀瓣或阀瓣，其钥匙由油路板，阀杆，阀瓣和密封环组成。机油电路板为圆柱形，径向且长度较短，并带有嵌入式蝶板。蝶阀的蝶板固定在管道的直径上。在蝶形阀油回路板的圆柱形安全通道中，圆盘形蝶形板绕中心线旋转，旋转角度为0°到95°。当旋转到95°时，闸阀将完全旋转。它已经打开了。
电动蝶阀结构简单，重量轻，非常轻巧，并且由几个部分组成。此外，它易于使用，因为只需旋转95°即可快速打开和关闭，同时，闸阀具有出色的流体控制特性。当蝶形阀处于全开位置时，材料流经油路板时的摩擦阻力仅为蝶形板的厚度，因此闸阀产生的气压不大且良好。流量监控特性。蝶阀有两种密封类型：弹性密封和金属密封。对于可延展的密封闸阀，可以将密封圈安装在机油电路板中或安装在蝶板附近。
电动蝶阀金属密封蝶阀通常比延性密封蝶阀更长，但是无法保证好的密封。虽然金属密封蝶形阀可以集成到更高的工作温度中，但可延展的密封蝶形阀具有温度受限的缺点。当电动蝶阀被指定为流量监控应用时，选择正确的阀门尺寸和类型非常重要。蝶阀构造的基本原理特别适合于大直径阀门的制造。蝶阀不仅用于一般工业生产中，例如原油，液化气，化工厂和污水处理，而且还用于火力发电厂的冷却系统。
常见的电动蝶阀有两种类型：对夹式蝶阀和法兰式蝶阀。对夹式蝶阀使用双头螺栓在两个管道法兰之间连接闸阀。法兰蝶阀在闸阀上包括一个法兰。使用地脚螺栓将闸阀的两个侧环法兰连接到管道法兰。
但是，在安装电动蝶阀之前需要准备以下几点：
1、打开之后，须按时安装阀门。请勿松开阀门固定螺钉或螺母。
2、您可以安装电动蝶阀。以任何角度将其连接到管道。我们建议您不要将其倒置安装以便于维护。
3、在安装蝶阀法兰时，需要确保法兰表面与密封橡胶对齐，并均匀拧紧螺钉，并且密封表面是好的配合。如果螺钉的拧紧力不均匀，橡胶将撞击。阻塞蝶板或使阀杆泄漏到蝶板上。
An electric butterfly valve controls flow with a rotating disc. Its main components are the body, stem, disc and sealing ring. The body has a short cylindrical passage, with the disc positioned across the pipe diameter. The disc rotates about its centerline; the source describes an operating range of 0° to 95° and full opening at 95°.
Electric butterfly valves have a simple, lightweight structure with relatively few components. A short rotation allows rapid opening and closing with effective fluid control. At full opening, resistance is mainly associated with the disc thickness, resulting in relatively low pressure loss. Butterfly valves may use resilient or metal seals. Resilient sealing rings can be fitted in the body or near the disc.
Metal-seated butterfly valves generally offer longer service life and higher temperature capability than resilient-seated types, although their sealing performance differs. Resilient seals have temperature limitations. For flow-control service, selecting the correct valve size and type is essential. Butterfly valve construction is particularly suited to large diameters. Applications include oil, gas, chemical processing, wastewater treatment and cooling systems in thermal power plants.
Common configurations are wafer and flanged butterfly valves. Wafer valves are clamped between two pipe flanges using studs. Flanged valves have integral end flanges bolted to the pipeline flanges.
Before installation, prepare as follows:
- Install the valve promptly after unpacking. Do not loosen its fastening screws or nuts.
- The valve can be connected to the pipeline at different orientations. Avoid upside-down installation to make maintenance easier.
- Align flange faces and sealing rubber correctly, and tighten bolts evenly to achieve proper contact. Uneven tightening can deform the rubber, obstruct the disc or cause leakage.
