News_Chaofan automatic control valve

2024.12.17

Leaders of the Provincial Department of Commerce came to visit and guide the Chaofan expansion project

2023.08.23

Where are hydraulic actuators commonly used

Hydraulic actuators are simple, compact, and small in size. Stable and reliable transmission, without buffering or impact. Different hydraulic oils can be used as needed, which can operate within the temperature range of -45 ℃ to+120 ℃ and have explosion-proof properties. It can obtain large output torque and is suitable for any specification. The output torque can be accurately adjusted through a constant pressure relief valve, including the adjustment of opening and closing torque, and can even be directly reflected through hydraulic instruments. In the event of a sudden power outage, the accumulator can still be used for one or more power operations, which is of special significance for the automatic emergency shut-off valve and inlet discharge valve of long-distance pipelines.

2023.08.23

The functions and uses of AW series pneumatic actuators

The AW series pneumatic actuators are suitable for valves that rotate at 90 ° C (1/4 turn). Such as ball valves, butterfly valves, plug valves, etc. This product is designed and manufactured according to JIS standards, and the connection with the valve adopts the international standard ISO5211. When selecting and installing AW pneumatic actuators, the first step is to determine the torque of the valve and consider the pipeline medium. Water vapor or non lubricating media can increase the * * value by 25%; Non lubricating dry gas medium can increase * * value by 60%; Non lubricating use can improve the performance of granular powder media by 100%. Whether it is clean or not, increase the * * value of the friction lubrication medium by 20%, and then find a double acting or single acting torque gauge based on the working pressure of the air source to obtain an accurate actuator model.

2023.08.23

Daily maintenance and management of electric valves

1. The load of pneumatic devices is relatively large, which can adapt well to some high torque outputs. Although this is the case, electric actuators can now withstand relatively large loads and catch up with the level of pneumatic loads. Therefore, this point is only for your reference, after all, the situation is different. 2. Compared to other devices, pneumatic devices have lower requirements for the working environment. They can be used in some flammable and explosive situations, and even in many harsh environments such as dusty, strong magnetic, high radiation, or strong vibration. 3. The pneumatic device operates quickly and responds very quickly.

2023.08.23

The purpose and characteristics of electric actuators

The purpose of electric actuators: When it comes to the purpose of electric actuators, it is actually to convert the rotary motion of the motor into the desired operation (linear operation/rotary operation) to achieve the operation that the electric actuator needs to achieve. And it has remote control function and ground control function, which can be operated electrically or manually.

2023.08.23

Classification and selection of valve electric actuators

Valve electric actuators can be divided into three types based on the movement mode of the output shaft. 1. Partial rotary electric actuator, the output shaft of the partial rotary electric actuator rotates less than one turn, with a rotation angle of less than 360 degrees, and the output shaft rotates 90 degrees to achieve the opening and closing process of the valve. Partial rotary electric actuators are used in conjunction with butterfly valves, ball valves, and plug valves. 2. Multi turn electric actuator, the output shaft of the multi turn electric actuator rotates more than 360 degrees, generally requiring multiple turns to achieve the opening and closing action of the valve. Multi turn electric actuator is mainly used in conjunction with gate valves and globe valves.

2023.08.23

Analysis of accident causes and handling methods for electric actuators

1. High temperature causes aging of components and damage to the electric actuator of the induced draft fan. When exposed to indoor radiation temperature and ambient temperature, it can sometimes reach over 35 degrees Celsius. Such high temperatures are often deadly for electronic components, and sustained high temperatures are enough to cause component aging and damage to the electric actuator. 2. Dust causes short circuits between components and damages the circuit board. When used for a long time, the seal of the electric actuator is damaged, and dust takes the opportunity to enter. In addition, the condensation formed by temperature difference changes directly adheres to the circuit board, causing short circuits and damage to the components and integrated blocks.

2023.08.23

Classification, selection, and operation of electric actuators

Determine electrical parameters based on the selected electric actuator. Due to differences in electrical parameters among different electric actuator manufacturers, it is generally necessary to determine their electrical parameters during design and selection, mainly including motor power, rated current, secondary control circuit voltage, etc. In this regard, errors often occur, resulting in mismatched parameters between the control system and the electric actuator, causing tripping during operation, fuse melting, etc Fault phenomena such as thermal overload relay protection tripping.

2023.08.23

Choose pneumatic and electric actuators based on valve torque

Outdoor series: When a certain torque is applied to the output shaft, the worm not only rotates but also produces axial displacement, which drives the crank and cam to compress the micro switch, cut off the motor power supply, and stop the motor when it operates. This achieves the control of the output torque of the electric actuator and protects the electric valve.

2023.08.23

The role and application fields of pneumatic actuators

Pneumatic actuators are used to drive switch valves or linkage mechanisms, using compressed air as the power source. Has good explosion-proof and fire resistance. The application fields almost cover all production plants, oil fields, petrochemical plants, all chemical plants, machinery production plants, thermal power plants, automobile and motorcycle production plants, and so on. If you want to operate this product, the scope is very broad, but the competition is also fierce, so you should be cautious.

2023.05.24

The difference between pneumatic control valves and electric control valves

The electric regulating valve is composed of an electric actuator and a regulating valve, and its main characteristics are: 1. Light weight and beautiful appearance. 2. Functionally, it can replace many products with incomplete functions, simplify the design, and solve the shortcomings of complex factory management, complex selection, and large maintenance workload. 3. The adjustable ratio of electric control valves is large, usually up to 100, and good adjustability can be guaranteed from 10% to 90% of the opening. 4. Smooth operation and extremely high reliability can solve the fatal structural defects of traditional valves with large leaks. 5. Excellent on/off characteristics, zero leakage, solving the fatal structural defect of large leakage in traditional valves.