西美爾氣動執(zhí)行器

氣源壓力2.5巴，**氣源壓力8巴。
The minimum supply pressure is 2.5 Bar
The maximum supply pressure is 8 Bar

3.介質(zhì)環(huán)境溫度 Operating temperature
標(biāo)準(zhǔn)：-20℃~+80℃
低溫：-35℃~+80℃
高溫：-15℃~150℃
Standard:-20℃~+80℃
Low temperature:-35℃~+80℃
High temperature:-15℃~+150℃

動作形式 Operating type
單作用和雙作用 Double acting and spring return

氣源接口符合NAMUR標(biāo)準(zhǔn)，可簡單方便地安裝電磁閥。
1.Air supply connection is designed in accordance with NAMUR Standard to install solenoid valves.

輸出軸的NAMUR標(biāo)準(zhǔn)槽和缸體上部標(biāo)準(zhǔn)安裝孔，可使限位開關(guān)、定位器直接嚙合和安裝。
2.The Namur drive pinion and the Namur top mounting connection permit direct installation of  accessories such as limit switch box  and positioner.

底部安裝孔設(shè)計符合ISO5211、DIN3337標(biāo)準(zhǔn)，可以直接安裝離合器(氣動手輪機構(gòu))或安裝支架。3.Bottom mounting connection is designed in accordance with ISO5211 and DIN3337 standards for direct mounting with valve gear boxes or mounting brackets.

產(chǎn)品序列號、氣源接口及底部安裝孔全部電腦打字，易于辨識和跟蹤服務(wù)。
Each actuator is marked with a serial number, air connection and bottom mounting holes are marked for easy track and distinction.

雙作用執(zhí)行器的選型:
在正常操作條件下，雙作用執(zhí)行器考慮的安全系數(shù)為20%-30%。
示例：
   閥門力矩=100Nm
   安全力矩=100×(1+30%)=130Nm
   氣源壓力=5Bar
對照雙作用力矩表，選配雙作用執(zhí)行器最小規(guī)格為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.

單作用執(zhí)行器的選型
在正常工作條件下，單作用執(zhí)行器考慮的安全系數(shù)為30%-50%

例如：
閥門需要力矩=80N.m
安全力矩=80(1+30%)=104N.m氣源壓力=5Bar
對照單作用執(zhí)行器輸出力矩表，我們可以查到RT435SR K7輸出力矩為
空氣行程 0o=308N.m
空氣行程 90o=247N.m
彈簧行程 90o=181N.m
彈簧行程 0o=120N.m
所有輸出力矩均大于我們需求。

注意：
單作用執(zhí)行器彈簧復(fù)位過程中，執(zhí)行器B口通氣不影響執(zhí)行器輸出力矩，相反幫助彈簧的復(fù)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.

在單作用執(zhí)行器的選配過程中，如果能夠了解閥門在開啟、運行和關(guān)閉時的扭矩分配，我們就可以更加經(jīng)濟、更加合理地選配執(zhí)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：

蝶閥原最大扭矩=104N.m
打開后扭矩  104x30%=32N.m
氣源壓力=5Bar
我們可以選擇 RT255SR K11
空氣行程 0o=136N.m >104N.m
空氣行程 90o=78N.m >32N.m
彈簧行程 90o=173N.m >32N.m
彈簧行程 0o=115N.m >104N.m
以上數(shù)據(jù)顯示可以滿足該蝶閥的正常啟閉。

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.

     行程開關(guān)反映閥門開關(guān)兩個極端位置，并同時送出指示訊號的裝置，控制室可以根據(jù)此訊號，叛斷閥門的開關(guān)狀態(tài)以便采取相應(yīng)措施。