View Solenoid valve life test from every aspect
Solenoid valve as a key component in the automation control system, the reliability of its performance directly affects the stable operation of the entire system. Among the many performance indicators, the life of the solenoid valve is a crucial parameter. Therefore, the life test of the solenoid valve is of great significance to assess and ensure its long-term stable operation. In this paper, the working principle of the solenoid valve, the significance of the life test, test methods and measures to improve life and other aspects of a comprehensive discussion.
First, the working principle of the solenoid valve
Solenoid valve is the use of electromagnetic control of the automation of basic components, it is generated through the coil of magnetic field, driven by the valve spool movement, to achieve the opening or closing of the fluid channel. The core components of the solenoid valve include electromagnetic coil, spool, valve body, etc.. When the electromagnetic coil is energised to generate a magnetic field, the spool is displaced by the magnetic force, which in turn drives the valve to open or close, and completes the task of controlling the fluid.
Solenoid valve life test is to simulate its use in the actual working environment, through a long period of continuous work, to assess its reliability and stability. This test can help manufacturers predict the service life of the solenoid valve, timely detection of possible design and manufacturing defects, and provide an important basis for product improvement and optimisation. In addition, the life test can also help users to choose a more suitable for their specific application requirements of the solenoid valve, to ensure the efficient operation of the system.
Third, the test method
The life test of solenoid valve usually includes the following methods:
(a) switching life test: this is the most basic life test, through the simulation of solenoid valves in actual use of switching frequency, a large number of continuous switching action, to observe whether the performance of the solenoid valve with the increase in the number of times of use and change. This test can help assess the mechanical durability of the solenoid valve.
(B) environmental adaptability test: solenoid valve in the actual application may encounter a variety of harsh environmental conditions, such as high temperature, low temperature, high humidity, vibration, etc.. Environmental adaptability test is to put the solenoid valve in these extreme environments, to check whether it can work normally, and whether the performance will be affected.
(C) pressure test: solenoid valve needs to withstand a certain pressure when working, pressure test is mainly to assess the performance of the solenoid valve under high pressure and sealing performance. This test can ensure that the solenoid valve under pressure will not leak or damage.
This solenoid valve life test machine (SH9265), the valve test bench is mainly used for refrigerators, air conditioners, solenoid valve life test, using a touch screen + PLC display and control, can accurately test, record the parameters of the solenoid valve being tested.
1、Current range: 50-500mA (power 1-1 6W).
2、Solenoid valve test voltage: DC5-12V, adjustable.
3、Test station: 10, each station works independently.
4、Test cycle: 0-999s can be set.
5、Equipment with power-down save function, can record the stop time, in the case of sudden power failure can be intact to save the test data.
6、The number of tests: 1-999999 times set arbitrarily, the number of tests to automatically stop, and alarm to remind.
7、Test water pressure measurement range: 0.001 ~ 0.003 + 10% MPa.
8、The test is a constant pressure, pressure accuracy: +0.001MPa
Fourth, to improve the life of the measures
In order to improve the service life of the solenoid valve, you can start from the following aspects:
(A) material selection: suitable material is the basis for improving the life of the solenoid valve. Select corrosion-resistant, wear-resistant materials can effectively improve the durability of the valve body and spool, thereby extending the service life of the solenoid valve.
(B) precision manufacturing: the accuracy of the manufacturing process directly affects the performance of the solenoid valve. Improve the manufacturing precision, to ensure that the valve spool and valve seat with a good fit, can reduce the wear caused by improper fit, improve the reliability of the solenoid valve.
(C) optimize the design: according to the conditions of use and working environment of the solenoid valve, optimize its structural design, can effectively reduce the failure rate. For example, for the application of high-frequency switching, the design should be considered to reduce the inertia force and friction, in order to reduce the wear and tear of the valve spool and seat.
(D) regular maintenance: reasonable maintenance and overhaul is to extend the service life of the solenoid valve is an important means. Regular cleaning, lubrication and inspection of the solenoid valve can be found in time and solve the problem, to avoid the entire system downtime due to small faults.
Summary:
The life test of solenoid valves is not only very important to ensure the quality of the product, but also the basis for the continuous optimisation of the product. Through the in-depth study of the life of the solenoid valve, we can continuously improve its reliability in various working conditions, and further promote the development of automation technology.
