As an indispensable flow control device in pipeline system, the performance of hydraulic control valve directly affects the stable operation of the whole system. In order to help users better grasp the adjustment method of hydraulic control valve, together with the hydraulic control valve manufacturer to look at the key steps and precautions in the adjustment process of hydraulic control valve.
1. Key parameters of hydraulic control valve adjustment
The adjustment of hydraulic control valves is not a simple mechanical operation, but requires comprehensive consideration of a variety of parameters, including:
Water pressure: The water pressure in the pipeline directly affects the opening and flow of the valve.
Liquid temperature: liquids at different temperatures have different requirements for valve material and sealing performance.
Pipe diameter: Pipe diameter determines the valve diameter selection and flow range.
Valve opening: Valve opening is a direct means of controlling flow, which needs to be adjusted according to actual demand.
Second, the adjustment method of hydraulic control valve
1, adjust the valve opening
Valve opening is a key factor affecting the performance of hydraulic control valves, and its adjustment methods are mainly divided into manual adjustment and automatic adjustment:
Manual adjustment: Change the valve opening by rotating the nut to adjust the stem length. The specific steps are:
Close the valve completely and mark the stem length as zero.
According to the actual demand, gradually adjust the valve opening, and record the corresponding valve stem length.
Automatic adjustment: Through the motor or pneumatic mechanism to control the valve opening, to achieve automatic control. It should be noted that before using the automatic adjustment function, appropriate parameters should be set, such as proportional coefficient, integral time, differential time, etc., to ensure that the control valve can accurately respond to system requirements.
2, adjust the proportion coefficient
Proportional coefficient is the core parameter of hydraulic control valve, which determines the proportional relationship between the output and input of the valve. The adjustment of the proportional coefficient should follow the following principles:
The larger the proportional factor, the faster the valve response speed, but the system stability may be reduced.
The adjustment of the proportional coefficient should be carried out after the adjustment of the opening to ensure the optimal valve response speed and system stability.
Third, the hydraulic control valve adjustment precautions
Before any adjustment operation, please be sure to read the product instructions carefully and strictly follow the operating specifications.
It is recommended to maintain the hydraulic control valve regularly, and clean up impurities and lubricating parts in time to extend the service life of the valve.
In case of complex working conditions or difficult to solve the fault, it is recommended to contact professional technical personnel for handling.
