The Correct Choice Of Hydraulic Valve
The correct choice of hydraulic valve
For any hydraulic system, the correct choice of hydraulic valve, will make the hydraulic system design is reasonable, excellent performance, easy installation, easy maintenance, while ensuring the normal operation of the system an important condition. Here from several aspects to explain how to choose a reasonable hydraulic valve.
1. The general principle of choice
First, according to the functional requirements of the system to determine the type of hydraulic valve. Should try to choose the standard series of generic products. Depending on the actual installation, choose a different connection, such as tube or plate connection. Then, according to the system design of the maximum working pressure to select the hydraulic valve rated pressure, according to the maximum flow through the hydraulic valve to select the hydraulic valve flow specifications. If the relief valve should be selected according to the maximum flow rate of the hydraulic pump, the flow valve should be selected according to the flow rate controlled by the loop. The minimum steady flow should be less than the minimum steady flow required by the speed range.
2. Selection of hydraulic valve installation method
The installation of the hydraulic valve on the structure of the hydraulic device has a decisive impact, so according to the specific circumstances to choose the appropriate installation. In general, when choosing a hydraulic valve installation method, it should be based on the size of the selected hydraulic valve, the complexity of the system and the layout characteristics. Several of the installation methods described above have their own characteristics. Threaded connection, suitable for the system is relatively simple, fewer components, the installation location is more spacious occasions. Plate connection type, suitable for the system is more complex, more components, the installation location is more compact occasions. The connection plate can be drilled to communicate the oil path, and the installation of the hydraulic components on the connection plate can reduce the connection between the hydraulic valves and reduce the leakage point, making installation and maintenance more convenient. Flange connection type is generally used for large diameter valves.
3. Selection of Rated Pressure of Hydraulic Valve
The rated pressure of the hydraulic valve is the basic performance parameters of the hydraulic valve, marking the hydraulic valve pressure capacity of the size, refers to the hydraulic valve in the rated working state of the nominal pressure. Hydraulic valve rated pressure selection, should be based on the hydraulic system design work pressure to select the corresponding pressure level of the hydraulic valve. In general, the rated pressure value indicated on the hydraulic valve should be made to be greater than the operating pressure of the system.