Hydraulic system is a system that utilizes the pressure of a liquid to transfer energy and control movement, and is widely used in machine tools, construction machinery, aerospace, paper, chemical and other industries.1 The valve in the hydraulic system is an important component that controls the direction of hydraulic fluid flow, pressure and flow rate, which directly affects the performance and efficiency of the system.1 Solenoid valves are valves that utilize electromagnetism to control the opening and closing of spools, which can realize the rapid switching, regulation and distribution of liquid or gas.2 Solenoid valves are widely used in the fields of hydraulics, pneumatics, instrumentation, medical, refrigeration and aerospace, etc., and are an important component for realizing automation control.
Parker is an American company specializing in the manufacture and sale of solenoid valves and other hydraulic equipment and systems in a variety of types and configurations.Parker's solenoid valve products are characterized by the following features:
High flexibility, can be selected according to different application requirements of different number of channels, functions, start-up type, installation mode, etc.. High accuracy, can realize the fine adjustment and control of flow, pressure, temperature and other parameters. High energy-saving, can realize the effective use and saving of power and oil. High reliability, can adapt to a variety of challenging environments and working conditions, to ensure long-term stable operation.
This article will introduce Parker solenoid valves in the hydraulic system, and a few typical products as an example, to show the advantages and characteristics of Parker solenoid valves.
Parker solenoid valve in the hydraulic system application
The following types of solenoid valves are commonly used in hydraulic systems:
Solenoid reversing control valve: this valve is used to control the hydraulic actuators (such as cylinders or oil motors) of the forward and reverse or stop, usually four-way two-position or three-position structure. This valve can realize rapid start-stop and direction change control of the actuator to improve efficiency and precision.
Electromagnetic proportional control valve: this kind of valve is used to control the speed or torque of hydraulic actuator (such as servo cylinder or servo motor), usually with four-way two-position structure. The valve can realize the continuous adjustment and control of the actuator to improve the flexibility and stability of work.
Electromagnetic relief control valve: this valve is used to control the pressure in the hydraulic system or protect the system from overload damage, usually two-way two-position structure. The valve can be realized on the system pressure to maintain or limit the constant, improve safety and reliability.
Electromagnetic throttling control valve: this valve is used to control the flow in the hydraulic system or to adjust the motion characteristics of the actuator, usually a two-way two-position structure. The valve can realize the precise control or regulation of the system flow, improve the work effect and quality.
Parker solenoid valve in the hydraulic system can not only realize the basic control of hydraulic oil, but also realize the intelligent control of the hydraulic system. For example, Parker solenoid valve can be connected with sensors, controllers, monitors and other equipment to form a closed-loop control system, realizing real-time monitoring, feedback and adjustment of the hydraulic system to improve the system's self-adaptability and optimization. In addition, Parker solenoid valve can also be combined with network, cloud, Internet of Things and other technologies to realize remote control, data analysis and fault diagnosis of the hydraulic system to improve the interconnectivity and intelligence of the system.
Typical products of Parker solenoid valve
Parker solenoid valves are available in a variety of series and models to meet the needs of different hydraulic systems. The following are some common Parker solenoid valve products:
D1VW Series Solenoid Directional Control Valve (NFPA D03): This is a four-way, two- or three-position solenoid directional control valve that meets the NFPA D03 standard for forward and reverse control of hydraulic actuators (such as cylinders or oil motors). The valve has the advantages of compact structure, fast response and good sealing performance. The valve also has the following features:
Different coil voltages and frequencies can be selected to adapt to different power requirements. Different coil connection methods can be selected, such as plug type, junction box type, flying wire type, etc., which is convenient for installation and maintenance. Different manual operation methods can be selected, such as knob type, wrench type, button type, etc., which is convenient for manual operation in emergency situations. Different spool position indication methods can be selected, such as mechanical indicator, LED indicator, etc., which is convenient for observation and detection. Different valve body materials can be selected, such as aluminum alloy, cast iron, stainless steel, etc., to adapt to different working environments and media.
VP120 Series Load Sensitive Directional Control Valve: This is a high-performance directional control valve integrating load sensitive technology and pilot operated solenoid directional control valve, which can realize precise adjustment and coordinated control of multiple hydraulic actuators. The valve has the advantages of high flow, high pressure, high efficiency and low noise. The valve also has the following characteristics:
Flow and pressure can be automatically adjusted according to load changes to maintain constant speed or torque of the actuator. It can control the flow or pressure by analog signal or digital signal to realize fine control of the actuator. It can communicate with other devices through CAN bus or IO-Link interface to realize intelligent control of the system. Setting and modification can be done through software.