The control valve is the actuator in the automatic control, and its application quality is directly reflected in the control quality of the system. As a final element in process control, people have a newer understanding of its significance than in the past.
What are the advantages of a control valve?
What is the function of the excavator control valve?
What are the test steps for pressure control valves?
What are the advantages of a control valve?
Small actuators: control valves can reduce cost and improve flow capacity;
Sleeve guide: the control valve adopts sleeve guide, which is conducive to centering, reduces friction, reduces noise, and exchanges the flow characteristics;
Balanced coil: To reduce the thrust or thrust of the actuator, it is important to use a balanced coil, which also improves the dynamic performance of the system;
Integrated valve core and valve seat: To overcome the disadvantage of the poor sealing performance of the double seat valve, the control valve uses the integrated valve core and valve seat of the same material to form the valve set, thereby minimizing leakage and imbalanced forces at the same time;
Simple flow path: The flow path of the control valve is simple and the flow resistance is reduced, which not only reduces the pressure loss at both ends of the valve, but also reduces the cost.
What is the function of the excavator control valve?
A component used in a hydraulic transmission system or hydraulic control system to control the pressure, flow and direction of a liquid. The one that regulates the pressure is called the pressure regulating valve, the one that regulates the flow is called the flow regulating valve, and the one that regulates the in, out and flow direction is called the directional valve. The function of the hydraulic control valve (called hydraulic valve) in the hydraulic system is to control and adjust the flow direction, pressure and flow rate of the oil in the hydraulic system, so that the actuator and the working mechanism it drives can do this. the thrust (torque) and the speed of movement (rotational speed), etc. Every hydraulic system, no matter how simple it is, hydraulic valves must not be missing; Hydraulic machines and equipment with the same technological purpose can be used in different combinations of hydraulic valves to form a variety of hydraulic system schemes with completely different oil circuit structures. Therefore, the hydraulic valve is the part (component) with the most variants and specifications, the most widely used and the most active part (component) in hydraulic engineering; whether a newly designed or running hydraulic system can operate normally and reliably in accordance with the specified requirements.
What are the test steps for pressure control valves?
a. Adjust the printing properties. It can be set from minimum pressure to nominal pressure, and the pressure value is stable, and the setting is sensitive and reliable.
b. Pressure loss. At nominal flow, the pressure loss of the valve is measured and its value must not exceed the specified value.
c. Internal leakage. Under nominal pressure, measure the amount of internal leakage that must not exceed the specified value.
d. External leakage. Under nominal pressure, no external leakage on the valve cover, etc.
e, pressure vibration. The size of the pressure stroke reflects the stability of the valve and should not exceed the specified value.
Guangzhou HERUI is the hydraulic parts supplier specializing in control valves. If you want to get more information, just go and connect it.