What are the driving methods of the electric butterfly valve, and what are the advantages and disadvantages of each?
Electric butterfly valve is a widely used automatic control equipment, in order to achieve the accurate control of the valve, the driving mode is a crucial factor. This article will introduce the driving mode of the electric butterfly valve and their respective advantages and disadvantages to help readers better understand the electric butterfly valve.
Drive mode introduction:
1. Motor drive
Motor drive is a commonly used electric butterfly valve drive mode. It is mainly composed of a motor, transmission, coupling, stroke switch, etc., through the motor to drive the valve to open and close, and can achieve remote control. The advantages of motor drive include high precision control, high efficiency, easy maintenance, self-protection, safety and reliability. But there are also high noise, high initial cost, improper selection of motor power will cause waste and other problems.
2. Hydraulic drive
The hydraulic drive is an electric butterfly valve driven by oil. The valve opens and closes by pushing the piston and stem through a high or low pressure transfer of the oil. Compared with motor drive, hydraulic drive has the advantages of high power density, fast reaction speed, safety and reliability, and wide adjustment range. However, the hydraulic drive has problems such as oil contamination and leakage, which requires enhanced maintenance and maintenance.
3. Pneumatic drive
Pneumatic drive is an electric butterfly valve driven by gas power valve. Through the air source and air control system, the movement of the piston or diaphragm is controlled to achieve valve control. Advantages include being able to be used in harsh environments such as wet, corrosive or flammable media, and having high speed, high energy conversion rate and high reliability. However, the pneumatic drive also has the disadvantages of large suction noise, easy boiler and inconvenient installation of gas pipeline.
4. Electrohydraulic integrated drive
Electrohydraulic integrated drive is the combination of electric and hydraulic technology, the use of motor to drive the hydraulic pump to convert electric energy into hydraulic energy, to achieve valve control of the driving mode. The advantages include accurate control, fast response, strong overload capability, overload protection and so on. The main disadvantage is that the initial investment is high,
Post time: Jun-10-2023
