一、进口双作用AT型气动执行器概述

AT型执行器是一种齿条和齿轮轴结构的回转型气缸，分单作用，双作用两类，适用于所有类型的1/4回转型阀门或做1/4回转运动的场合。

内部的特别加工处理（Ra 0.4-0.6 μm）以及采用了摩擦系数（LAT LUB）非常小的润滑垫安装于活塞，免除了金属之间的摩擦。

该执行器使用寿命长，维护方便

AT系列气动执行器是一种双活塞齿条与齿轮转动结构的气动执行机构。欧德隆生产的气动执行器为活塞式，活塞式行程长，适用于要求有较大推力的场合，不但可以直接带动阀杆，而且可以和蜗轮蜗杆等配合使用。

AT气动执行器可装配智能阀门定位器、电磁阀、回讯器限位开关、手轮机构、空气过滤减压阀等。

结构简单、输出推力大、动作平稳可靠、安全防爆等优点，在化工、炼油等对安全要求较高的生产过程中有着广泛的应用。

可选择双动(D)、单动(S)，同时多种规格的执行器满足客户各种要求。

AT气动执行器应用范围：球阀、蝶阀、旋塞阀等。

The AT type actuator is a rotary cylinder with a rack and pinion shaft structure, divided into single acting and double acting types, suitable for all types of 1/4 rotary valves or situations where 1/4 rotary motion is performed.

The internal special processing (Ra 0.4-0.6 μ m) and the use of a lubricating pad with a very small coefficient of friction (LAT LUB) installed on the piston eliminate friction between metals.

This actuator has a long service life and is easy to maintain

The AT series pneumatic actuator is a type of pneumatic actuator with a dual piston rack and gear rotating structure. The pneumatic actuators produced by Oudelong are piston type, with a long piston stroke, suitable for situations requiring high thrust. They can not only directly drive the valve stem, but also be used in conjunction with worm gears and other components.

AT pneumatic actuators can be equipped with intelligent valve positioners, solenoid valves, limit switches for feedback devices, handwheel mechanisms, air filtration pressure reducing valves, etc.

It has the advantages of simple structure, high output thrust, stable and reliable operation, safety and explosion-proof, and is widely used in production processes with high safety requirements such as chemical engineering and oil refining.

Double action (D) or single action (S) can be selected, and multiple specifications of actuators can meet various customer requirements.

Application scope of AT pneumatic actuators: ball valves, butterfly valves, plug valves, etc.

二、进口双作用AT型气动执行器设计特点

1、全面符合最新的国际规范：ISO5211/DIN5211和VD/VDE3845、NAMUR标准。

2、挤压的高强度铝制缸体，内表面经细磨及硬质阳极氧化处理，使用寿命长，摩擦系数低，动作迅速。

3、优美紧凑，现代化的造型，多规格的系列产品使用选型更经济实惠。

4、所有的活动表面均采用高质量的轴承，低摩擦，长寿命，无噪音。

5、外部安装两个独立的行程调节机构，方便进行±5°全开或关位置调节。

6、外部结构一样的执行器有双作用式和单作用式（弹簧复位）供选择，便于安装输出的所有附件。

7、NAMUR标准的多功能位置指示器可视化指示。

8、预压负荷弹簧，安装、拆卸安全、方便。

9、活塞和端盖采用压铸铝合金，强度高，重量轻。

10、改变密封件的材料，可应用于高温或低温的场合。

11、根据需要可提供多种角行程（例如：120°、135°、180°等）和三位式气动执行器。

12、不需要连接板，可直接安装电磁阀。

1. Fully comply with the latest international standards: ISO5211/DIN5211 and VD/VDE3845, NAMUR standards.

2. Squeezed high-strength aluminum cylinder body, with fine grinding and hard anodizing treatment on the inner surface, has a long service life, low friction coefficient, and quick action.

3. Beautiful and compact, modern design, and a variety of specifications make the selection of series products more cost-effective.

4. All active surfaces are made of high-quality bearings, with low friction, long lifespan, and no noise.

5. Install two independent stroke adjustment mechanisms externally for convenient ± 5 ° full open or close position adjustment.

6. There are dual acting and single acting (spring return) actuators with the same external structure available for easy installation of all output accessories.

7. NAMUR standard multifunctional position indicator visual indication.

8. Pre load spring, safe and convenient for installation and disassembly.

9. The piston and end cap are made of die cast aluminum alloy, which has high strength and light weight.

10. Changing the material of the sealing element can be applied in high or low temperature situations.

11. Multiple angular strokes (such as 120 °, 135 °, 180 °, etc.) and three position pneumatic actuators can be provided as needed.

12. No connecting plate is required, the solenoid valve can be installed directly.

三、进口双作用AT型气动执行器及附件功能与用途

1、单作用气动执行器（弹簧复位）：当电路气路切断或故障时，自动关闭( 常闭式)。

2、双作用气动执行器：双向气动控制阀门的开启和关闭。

3、双电控电磁阀：一个线圈通电时阀门打开，另一个线圈通电时阀门关闭，有记忆功能（可供防爆型）。

4、单电控电磁阀：供电时阀门打开或关闭，断电时阀门关闭或打开（可供防爆型）。

5、限位开关（回讯器）：远距离传送阀门打开或关闭的信号（可供防爆型）。

6、气动定位器：根据气压信号（0.2～1bar）的大小对阀门的介质流量进行调节控制（可供防爆型）。

7、电气定位器:根据电流信号（4～20mA）的大小对阀门的介质流量进行调节控制（可供防爆型）。

8、电气换位器：将电流信号转换成气压信号，与气动定位器配套使用。

9、气源处理三联件：包括减压阀、过滤阀、油雾器。对气源稳压、清洁及对连动部件起润滑作用。

10、手动装置：当气路电路切断或有故障时，用于手动操作阀门的启闭。

1. Single acting pneumatic actuator (spring return): automatically closes (normally closed) when the circuit air circuit is cut off or malfunctions.

2. Double acting pneumatic actuator: A bidirectional pneumatic control valve that opens and closes.

3. Dual electric control solenoid valve: When one coil is energized, the valve opens, and when the other coil is energized, the valve closes. It has a memory function (available for explosion-proof types).

4. Single electric control solenoid valve: the valve opens or closes when powered on, and closes or opens when powered off (explosion-proof type available).

5. Limit switch (relay): Remote transmission of valve opening or closing signal (available for explosion-proof type).

6. Pneumatic locator: adjusts and controls the medium flow rate of the valve based on the pressure signal (0.2-1 bar) (available for explosion-proof type).

7. Electrical locator: Adjust and control the medium flow rate of the valve based on the current signal (4-20mA) (available for explosion-proof type).

8. Electrical transducer: converts current signals into air pressure signals and is used in conjunction with pneumatic positioners.

9. Gas source treatment triple unit: including pressure reducing valve, filter valve, and oil mist collector. Regulate and clean the air source, and lubricate the connecting components.

10. Manual device: used to manually operate the opening and closing of valves when the pneumatic circuit is cut off or there is a malfunction.