With the development of the natural gas pipeline industry, the usage of natural gas pipeline valves is increasing, and natural gas pipeline valves are different from ordinary valves. There are several specific points: as management and control personnel are generally in the station or central control room, it is required that in case of major accidents such as pipeline rupture, the pipeline valves can be automatically cut off. Pipeline valves require low operating force to achieve accurate operation when temperature and external force changes have an impact. Especially for emergency shut-off valves, they must be able to remain fully open for a long time and quickly lock the pipeline if necessary.

In fact, many Chinese enterprises are not very familiar with the water treatment and environmental protection equipment in sewage treatment projects. Nowadays, environmental pollution is so severe that many colleagues in the environmental protection industry are committed to promoting the sustainable development of China's environmental protection industry. So, let's briefly popularize the basic knowledge of environmental water treatment. Below, let's analyze the production and piping process in the workshop, The principles and respective advantages of electric and pneumatic valves.

In modern control, various systems are becoming increasingly complex and refined, and it is not just a certain driving control technology that can meet the various control functions of the system. Electric actuators are mainly used in applications that require precision control. With the continuous improvement of flexibility requirements in automation equipment, the same equipment often needs to adapt to the processing needs of different sizes of workpieces. The actuators require multi-point positioning control, and the operating speed and torque of the actuators need to be controlled or synchronously tracked, which cannot be achieved using traditional pneumatic control, And electric actuators can easily achieve such control.

Principle of electric ball valve: Electric ball valve is a combination of plug type ball valve and electric actuator. The valve body structure of the ball valve is a valve core with a rotation of 90 degrees, and the electric actuator is a standard signal with an input of 0-10 milliamperes. The motor group drives the gear turbine worm angle torque to open and adjust the valve. Its use mainly relies on the adjustment operation of electrical flow.

Valve electric actuators have special requirements, that is, they must be able to limit torque or axial force. Usually, valve electric actuators use torque limiting couplings. After the specification of the electric actuator is determined, its control torque is also determined. Generally, it runs within a predetermined time and the motor will not overload. But if the following situations occur, it may lead to overload: firstly, the power supply voltage is low and the required torque cannot be obtained, causing the motor to stop rotating; The second is to mistakenly set the torque limiting mechanism to exceed the stopping torque, causing continuous excessive torque generation and causing the motor to stop rotating; The third is intermittent use, which generates heat accumulation that exceeds the allowable temperature rise of the motor; Fourthly, due to some reason, the circuit of the torque limiting mechanism malfunctions, resulting in excessive torque; The fifth reason is that the operating environment temperature is too high, which relatively reduces the thermal capacity of the motor.