Fatigue testing machine control systemMainly used for pressure fatigue testing of gas cylinders and pressure vessels. Widely used in the production, development, and research of various gas cylinders and pressure vessels in quality inspection units, product quality inspection stations, scientific research institutions, and other fields. The control system of the fatigue testing machine consists of a pressurization system and a control and display system. The pressurization system is mainly composed of liquid booster pumps, etc., which mainly complete the pressurization and pressure maintenance work of the system, ensuring the pressurization and pressure maintenance of long-term tests. The control and display system mainly completes tasks such as controlling the pressure of the driving gas, controlling pressure relief, displaying pressure in a timely manner, and controlling pressurization. Computer control consists of a two-level control system consisting of a microcomputer and a programmable logic controller. The control principle is advanced, and independent control units are used to truly achieve modular control. The control system of the fatigue testing machine can control the accuracy of pressure, achieve good pressure holding effect, and automatically replenish pressure in real time. Multiple channels and workstations, each test can be conducted simultaneously without affecting each other. The experimental data and graphics are automatically recorded and saved in the computer.

Characteristics of fatigue testing machine control system:

1. Equipped with a gas driven automatic booster pump, the fatigue testing machine control system can easily achieve adjustable and controllable output pressure.

2. Advanced technology and reasonable structural design.Fatigue testing machine control systemIt has the characteristics of small size, light weight, and beautiful appearance.

3. All pressure bearing parts are made of standard components without any welding connections, making them easy to disassemble. The fatigue testing machine control system has a high safety factor, long service life, and is easy to maintain.

Fatigue testing machine control system testing:

In the past, the hydraulic power source of fatigue testing machines was driven by ordinary motors to operate the oil pump at rated speed. The proportional relief valve adjusted the system working pressure, and the proportional flow valve distributed the pressure provided by the oil pump. Part of the pressure oil was provided to the oil cylinder, and the excess pressure oil flowed back to the oil tank through the proportional relief valve. Most of the work consumed by the motor was ineffective work, which was converted into heat energy and returned to the oil tank through the proportional relief valve. Therefore, a cooling system also needs to be installed, resulting in low energy utilization during operation. The control system of the fatigue testing machine adopts a servo motor to drive the servo oil pump for oil supply. As long as the torque and speed of the speed regulating motor are dynamically adjusted, the pressure and flow required by the hydraulic cylinder of the fatigue testing machine can be provided. The required flow rate of the system is equal to the flow rate of the pump, thus greatly reducing power loss and making it more energy-efficient.

In the past, fatigue testing machines used an oil pump as a power source. During loading, the oil pump turned forward to feed oil into the oil cylinder, and during unloading, it needed to stop from forward rotation before starting to reverse. The oil cylinder returned oil, and it took longer to complete one loading and unloading. The control system of the fatigue testing machine adopts a dual oil pump servo control system, with one oil pump feeding oil and the other oil pump returning oil. During loading and unloading, when the oil pump is loaded to the maximum load, the second oil pump is immediately started for unloading. Compared with the previous use of one oil pump as a power source, it greatly shortens the time required for loading and unloading and greatly improves the efficiencyFatigue testing machine control systemThe loading and unloading frequency of the fatigue testing machine greatly improves work efficiency. The frequency of the fatigue testing machine control system is 3HZ, and the rated load is 50 tons.