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Partial Rotary Valve Electric Actuator Valve Intelligence Made A Higher Demand
Jun 27, 2017

The status of intelligent valve drive

Water, steam or oil and other fluids and industrial development are closely linked, and the application of fluid in the industrial system can not be separated from the pipe network, there must be a pipe network. With the DCS (Distributed Control System) control system development, to achieve the pipe network system of industrial automation management, it is inseparable from the electric valve in the pipe network system implementation agencies. The control of the valve from a simple switch control into the opening control and flow and other relationship control. The valve is not only a purely controlled object, and evolved into the entire process system,Partial Rotary Valve Electric Actuator Valve an important source of information for the process system to provide valve process parameters and fault diagnosis information. This poses a higher demand for the intelligence of the valve actuator. Multi-turn structure so that the actuator stroke can be theoretically infinite, in other conditions permit, can be set with any size valve, no mechanical limit and torque switch, no mechanical wear, the use of infrared remote control non-contact debugging technology Open the electronic controller cover for easy and quick setup.

To achieve the pipe network system of industrial automation management, can not be separated from the automatic valve in the pipe network system implementation agencies. In some applications, the control of the valve is not only a simple switch control, but also involves the opening control and flow and other relationship control, which the valve electric actuator controller intelligence put forward higher requirements.

If it is in the toxic, explosive or flammable media production site, artificial field control is extremely dangerous. Long-range centralized control is more necessary in such applications.

Based on the above background considerations, the program to achieve these ideas, the design of a valve on the installation of intelligent valve control device, which greatly improved the security.

Actuators in the modern production process automation plays a very important role, often referred to as the realization of the production process automation "hand and foot." The electric actuator is powered by an electric power, which receives the standard signal (analog or digital) from the regulator and automatically changes the operating variable by changing the signal to a corresponding mechanical displacement (corner, straight or multi-turn) , Damper, baffle opening, etc.), in order to achieve the parameters (temperature, pressure, flow, level, etc.) for the purpose of automatic adjustment, the production process according to the scheduled requirements. So the electric actuator on the automatic adjustment of the safe operation of the system,Partial Rotary Valve Electric Actuator Valve reliability and quality of the pros and cons have a great impact.

It is mainly composed of two parts: servo control system and actuator, accept the unified standard current signal from the adjustment unit, the transmission unit or the manual operator output, and convert it into the corresponding mechanical displacement output. The entire product range of the intelligent valve drive is modular in design.

It consists mainly of the following structure:

① motor control system

The use of time technology servo controller control AC asynchronous electric

② transmission mechanism

Worm gear reduction mechanism to reduce the speed of the motor to the required output speed, the motor does not turn when the transmission mechanism self-locking.

③ control unit

Use time technology QMCL (fast motion control language) to program, control the operation of the motor

④ valve connection mechanism

The valve coupling mechanism has a variety of types of output devices to choose from to install the actuators on different valves. The dimensions and dimensions are in accordance with ISO 5210 or DIN 3338. The output drive is also available as required on DIN 3338

⑤ manual mechanism

In the manual mode, the travel switch can be set and the emergency mechanism can be set. When the motor is in the stopped state, pulling the hand / automatic switch handle can disengage the motor from the transmission mechanism and connect it with the transmission mechanism manually.

Because the electric actuator is designed with electric priority,Partial Rotary Valve Electric Actuator Valve once the motor is started, the manual mechanism should be disengaged from the drive mechanism, and the motor drives the drive mechanism, and the handwheel should not rotate during the electric operation.