What is the difference between an electric actuator and an electric actuator

Electric actuator, also known as electric actuator and electric head, is an actuator that controls the opening of the valve (or other) through the control signal given by the control center. Control valve is a kind of valve classification according to function, it can be ball valve, butterfly valve, gate valve or any other valve you need, as long as you use it to change the flow rate you need to change, pressure, etc., to achieve this function, you can be through the valve itself (V-type ball valve), sometimes it is necessary to actuator to complete, such as electric actuator, pneumatic actuator, hydraulic actuator and other actuators. The electric control valve stipulates that the actuator equipped in the control valve is an electric actuator.

To put it simply, the electric actuator is a part of the electric control valve, that is, the electric actuator, which is also the electric head. The product adopts intelligent control circuit, which can realize self-diagnosis adjustment, LCD Chinese display working status, and has the advantages of strong applicability, full functions, extremely accurate control, easy operation and friendly man-machine interface. The electric actuator has the advantages of strong applicability, full function, extremely accurate control, easy operation, and friendly man-machine interface.

In a narrow sense, it is the same, but the name is not used, but according to the definition of the standard, they are not the same, the electric actuator is, a combination of actuator and valve; Actuator is what we often say, electric head, pneumatic head and so on. Because the actuator is generally not used alone, it will form a complete set of equipment with the valve, all, these two terms in the industry, basically mean the same meaning.

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:

The following influential first-line brands of water system valves and industrial valves can be used as a reference, but for reference only: Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, Sanhua, Su Yan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.

These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.

UK Rotok, reliable quality Be careful not to sell imitation goods when purchasing.

As we all know, electric actuators are mostly matched with valves and used in automatic control systems. There are many types of electric actuators, and they are different in the way of action, such as quarter-turn electric actuators are to output angular moment, while linear electric actuators are to output displacement thrust.

The type of electric actuator in the system application should be selected according to the working needs of the valve. The types of valves themselves are quite diverse, and the uses and working principles of various valves are also different, but generally speaking, valves are controlled by rotating the angle of the disc or lifting the valve plate to control the opening and closing or opening angle. The selection of electric actuators should be matched according to the opening and closing mode of the valve.

1. Multi-turn electric actuator.

The multi-turn electric actuator is also an electric actuator that outputs angular torque, and the difference between it and quarter-turn electric actuator is that its output shaft rotates more than 360 degrees. Multi-turn electric actuators are suitable for rotary valves that rotate multiple times to complete the opening and closing process, such as gate valves and globe valves. 2. Linear electric actuator.

Linear electric actuators output displacement thrust and are suitable for valve types used for disc lift control, such as single-seat control valves and double-seat control valves. 3. Quarter-turn electric actuator.

Quarter-turn electric actuators are used in conjunction with rotary valves. The output shaft of the quarter-turn electric actuator rotates less than one week, that is, 360 degrees, such as the rotation angle of butterfly valves, ball valves and plug valves is usually less than 90 degrees, and the rotation of the quarter-turn electric actuator at the position of 90 degrees can realize the opening and closing process of the valve. According to the installation interface method, quarter-turn electric actuators are divided into two types: direct-connected electric actuators and base crank electric actuators.

The output shaft of a direct-attached electric actuator is directly connected to the stem of the valve, while the base crank electric actuator is connected to the stem by a crank.

Hello, you can provide the working situation to Heli CNHELI electric actuator customer service, we will recommend relevant electric actuator products for you according to the situation. Hope it helps!

1. Motor: The motor is a switching power supply that accepts the output of the Huaiyuan servo amplifier or the electric operator, and the electricity is responsible for converting the electrical energy into mechanical energy, so as to drive the action of the lead runner;

2. Reducer: convert the high speed and small torque of the motor into the output power of low speed and high torque, and the rotation angle of the drive output arm is limited to the range of 90 degrees, and the torque generated is opened through the linkage drive valve plate;

3. Position transmitter: the axial displacement is generated through the connecting rod to change the position of the iron core in the differential transformer coil, so that the voltage output of the differential transformer at the corresponding position is converted into a standard DC current signal, that is, four to twenty milliamperes.

The angular displacement of the output shaft of the reducer is linearly related to the output current of the positional cracked plexus transmitter.

The similarities and differences between the electric actuator and the electronic actuator are the same: power drive, which can save the cost of setting up a gas source station. The servo amplifier of the electric actuator structure is installed separately from the actuator, which is inconvenient to use.

The electronic actuator and servo amplifier are integrated, which is convenient to adjust and has complete functions. Similarities: power driven, which can save the cost of setting up a gas source station.

Point: The servo amplifier of the electric actuator structure is installed separately from the actuator, which is inconvenient to use. The electronic actuator and servo amplifier are integrated, which is convenient to adjust and has complete functions.

What are the types of electric actuators, and what are the main functions of DKJ electric actuators?

This article introduces the classification of electric actuators, the functions of DKJ electric actuators in detail; Part of the valve knowledge materials are excerpted from the American Wittun VTON valve literature, original, if you feel that the answer is helpful to you, please raise your noble hand, give the American Wittun VTON valve a thumbs up.

The valve electric actuator is a special driving device used to drive the opening and closing of the valve, which is composed of a special motor, a worm gear, a stroke and torque detection mechanism and a control part. Different industries and different working conditions have different requirements for valve electric drive devices.

Valve electric drive devices are generally classified according to the type of structure, working mode, slewing mode and working environment.

Imported electric actuators.

1. According to the structure type, it can be divided into two types: integrated type and split type. The integrated valve electric drive device is divided into ordinary type and intelligent type. The split valve electric drive device is the control device that controls the operation of the valve electric drive device, and is installed in a separate electric control cabinet.

Electric actuators provide a split valve electric drive. The device has a large starting torque and accurate valve stroke control, and is widely used in valves in petroleum, chemical, hydropower, metallurgy, shipbuilding, light industry and food industries. The integrated valve electric drive device is a control device that controls the operation of the valve electric drive device, which is installed inside the valve electric drive device and is integrated with the valve electric drive device.

The integrated valve electric drive device is divided into ordinary type and intelligent type.

2. According to the rotation mode, it is divided into angular stroke, straight stroke and multi-rotation; Quarter-turn electric actuator for imported electric butterfly valve and imported electric ball valve, multi-turn electric actuator for imported electric globe valve.

3. According to the working environment, it is divided into waterproof and explosion-proof; For example, electric actuators with IP65, IP67, IP68 protection, and ExdiibT4, Exdiibt6, ExdiICT5 electric actuators.

DKJ electric actuator is a drive device that can provide linear or rotary motion, DKJ-G electric actuator, DKJ-K electric actuator are the execution units of DDZ electric unit combination instrument. DKJ electric actuators are powered by a power supply and accept a uniform standard signal of 0-10mA (, 4-10

ma (), and converts this into the corresponding angular displacement, automatically manipulating the damper, baffle, valve, and completing the automatic adjustment task. DKJ electric actuators are widely used in power generation, metallurgy, petroleum, chemical industry, light industry and other industrial sectors. In addition, mandrel type splitter, flange type splitter, flange flange hollow type splitter, platform desktop type splitter, ultra-thin desktop type splitter, parallel cam type splitter, cylindrical splitter, lifting and swing type splitter, flat conjugate cam type splitter and other different types and different purposes of splitter; The main electric actuators are:

DKJ electric actuators.

DKZ electric actuators.

DZW valve electric device.

2SA3 2SQ3 Siemens electric actuator, LJ460 linear stroke intelligent electric actuator, angular range explosion-proof electric actuator, etcIf you are interested in DKJ series electric actuators, you can contact us with the electrostatic valve.

There are many ways to classify it, 1. According to the way of travel, it is divided into straight stroke and angular stroke.

2. According to the control mode, it can be divided into adjustment type and switch type.

3,。There are also multi-turn partial turns.

DKJ is a kind of actuator that is widely used in domestic actuators, and its function is nothing more than a switch, control, and feedback signal adjustment. The mechanism is bulky, typical of the "Soviet style".

The electric actuator has 5 signals, valve opening, valve closing, valve position indication, etc., how many signals need to be uploaded and then the specific number of cores.

The number of cores of the cable depends on your control requirements, and there will be a lot of signals on the sample for you to choose.

The selection of electric actuators can be based on the following parameters.

1. Operating torque: Operating torque is the most important parameter for selecting valve electric devices. The output torque of the electric device should be multiple of the maximum torque of the valve operation.

For example, a butterfly valve with a torque of 100Num should choose a Vton electric actuator with a torque of 120-15Num.

2. Operating thrust: There are two main engine structures of the valve electric device, one is not equipped with a thrust plate, and the torque is directly output at this time; The other is equipped with a thrust plate, and the output torque is converted into output thrust through the stem nut in the thrust plate.

3. The number of rotations of the output shaft: the number of rotations of the output shaft of the valve electric device is related to the nominal diameter of the valve, the pitch of the valve stem and the number of threaded heads, which is calculated according to m=h zs (where: m is the total number of rotations that the electric device should meet; h is the opening height of the valve, mm; s is the pitch of the stem transmission thread, mm; z is the number of stem thread heads.

4 Stem diameter: For multi-turn open-rod valves, if the maximum stem diameter allowed by the electric device cannot pass through the stem of the equipped valve, it cannot be assembled into an electric valve. Therefore, the inner diameter of the hollow output shaft of the actuator must be larger than the outer diameter of the stem of the open rod valve.

For the dark rod valve in the partial rotary valve and the multi-turn valve, although the passing problem of the valve stem diameter is not considered, the diameter of the valve stem and the size of the keyway should also be fully considered when selecting, so that it can work normally after assembly.

5. Output speed: The opening and closing speed of the valve is fast, and it is easy to produce water hammer. Therefore, the appropriate opening and closing speed should be selected according to different use conditions. For example, ball valves and butterfly valves that require fast switching should choose Weidun VTON electric actuators with fast response switches.

6. Installation and connection methods: the installation methods of electric devices include vertical installation, horizontal installation and floor installation; The connection mode is: thrust plate; Stem pass (open-rod multi-turn valve); Dark rod multi-rotation; No thrust disc; The stem does not pass; Partial rotary electric device has a wide range of uses, is an indispensable equipment to achieve valve program control, automatic control and remote control, and is mainly used in closed circuit valves.

However, the special requirements of the valve actuator cannot be overlooked, which must be able to limit the torque or axial force. Usually, valve actuators use torque-limiting couplings.

1. The actuator is a device that adjusts the input amount of the controlled object according to a certain adjustment law in the automatic control system of the industrial production process, which takes the signal of the adjusting instrument or other control devices as the input signal. It is an industrial automation instrument, such as regulating valves, baffles and solenoid valves.

2. an operator. An operating mechanism composed of a series of joints or relative movements, which can imitate the movements of the human hand. It is an important part of all kinds of robots, generally driven by cylinders, cylinders or motors and other drives, and completes several degrees of freedom in the car space, so that the grasping device mounted on the end joint of the operator can grasp objects or move objects and complete certain operation operations.