西美尔气动执行器

气源压力2.5巴，**气源压力8巴。
The minimum supply pressure is 2.5 Bar
The maximum supply pressure is 8 Bar

3.介质环境温度 Operating temperature
标准：-20℃~+80℃
低温：-35℃~+80℃
高温：-15℃~150℃
Standard:-20℃~+80℃
Low temperature:-35℃~+80℃
High temperature:-15℃~+150℃

动作形式 Operating type
单作用和双作用 Double acting and spring return

气源接口符合NAMUR标准，可简单方便地安装电磁阀。
1.Air supply connection is designed in accordance with NAMUR Standard to install solenoid valves.

输出轴的NAMUR标准槽和缸体上部标准安装孔，可使限位开关、定位器直接啮合和安装。
2.The Namur drive pinion and the Namur top mounting connection permit direct installation of  accessories such as limit switch box  and positioner.

底部安装孔设计符合ISO5211、DIN3337标准，可以直接安装离合器(气动手轮机构)或安装支架。3.Bottom mounting connection is designed in accordance with ISO5211 and DIN3337 standards for direct mounting with valve gear boxes or mounting brackets.

产品序列号、气源接口及底部安装孔全部电脑打字，易于辨识和跟踪服务。
Each actuator is marked with a serial number, air connection and bottom mounting holes are marked for easy track and distinction.

双作用执行器的选型:
在正常操作条件下，双作用执行器考虑的安全系数为20%-30%。
示例：
   阀门力矩=100Nm
   安全力矩=100×(1+30%)=130Nm
   气源压力=5Bar
对照双作用力矩表，选配双作用执行器最小规格为RT160DA。

Sizing: Double Acting Actuator
The suggested safety factor for double acting actuators under normal
working conditions is 20%-30%.
Example:
   The torque needed by valve=100N.m
   The torque considered safety factor (1+30%)=130N.m
   Air Supply=5Bar
According to the above table, we can  choose the minimum model is RT160DA.

单作用执行器的选型
在正常工作条件下，单作用执行器考虑的安全系数为30%-50%

例如：
阀门需要力矩=80N.m
安全力矩=80(1+30%)=104N.m气源压力=5Bar
对照单作用执行器输出力矩表，我们可以查到RT435SR K7输出力矩为
空气行程 0o=308N.m
空气行程 90o=247N.m
弹簧行程 90o=181N.m
弹簧行程 0o=120N.m
所有输出力矩均大于我们需求。

注意：
单作用执行器弹簧复位过程中，执行器B口通气不影响执行器输出力矩，相反帮助弹簧的复位。

Sizing: Spring Return Actuators
The suggested safety factor for spring return actuator under normal working conditions is 30-50%
Example：
The torque needed by valve=80N.m
The torque consider safety factor ( 1+30%)=104 N.mAir Supply=5Bar
According to the table of spring return actuators' output, we find output torque of RT435SR K7 is:
Air stroke 0o=308N.m
Air stroke 90o=247N.m
Spring stroke 90o=181N.m
Spring stroke 0o=120N.m
All the output torque is larger than we needed.

Attention:
During the restoration, the spring return actuators' output torque will not be affected by the inputing air from the port B. On the contrary, it will help the restoration of springs.

在单作用执行器的选配过程中，如果能够了解阀门在开启、运行和关闭时的扭矩分配，我们就可以更加经济、更加合理地选配执行器。

During selecting the spring return actuators, we can choose the more reasonable and more economical actuators, if we konw the different torque needed by the valve working at opening, operating and closing.

例 如：

蝶阀原最大扭矩=104N.m
打开后扭矩  104x30%=32N.m
气源压力=5Bar
我们可以选择 RT255SR K11
空气行程 0o=136N.m >104N.m
空气行程 90o=78N.m >32N.m
弹簧行程 90o=173N.m >32N.m
弹簧行程 0o=115N.m >104N.m
以上数据显示可以满足该蝶阀的正常启闭。

Example:

The max torque needed by the butterfly valve=104N.m
The torque after opened (operating)104x30%=32N.m
Air Supply=5Bar
We can select the RT255SR K11
output torque is:
   

• Air stroke 0o=136N.m >104N.m
• Air stroke 90o=78N.m >32N.m
• Spring stroke 90o=173N.m >32N.m
• Spring stroke 0o=115N.m >104N.m
  The above datas show the actuator's torque can satisfy the requirement of the butterfly valve.

     行程开关反映阀门开关两个极端位置，并同时送出指示讯号的装置，控制室可以根据此讯号，叛断阀门的开关状态以便采取相应措施。