Domestic electromagnetic valve escort high-speed rail

Solenoid valves are electromagnetically controlled industrial equipment used in industrial control systems to adjust the direction, flow, speed, and other parameters of the media. The solenoid valve is controlled by the electromagnetic effect. The main control method is controlled by the relay. In this way, solenoid valves can be combined with different circuits to achieve the desired control, and the control accuracy and flexibility can be guaranteed.

The four high-speed rail valves developed by the China Aerospace Science and Industry Corporation of Henan Aerospace Industry Corporation 695 Plant passed the audit of Beijing Saide High-tech Railway Electric Technology Co., Ltd. with a score of 97.3. So far, the technical level of the electromagnetic valve, pressure relief valve and other products developed by the plant for high-speed trains has reached the level of similar foreign products.

The 695 plant is a solenoid valve developed for high-speed trains. It is the first beat-type structure and two three-way electromagnetic valves of the plant. There are many technological innovations.

In the process, the traditional process of hot-pressing fluoroplastics on the metal cushions of imported products was changed, and rubber materials were used for sealing, which completely eliminated the leakage range of the imported products on the sealing property; on the structure of the main and auxiliary valves Improvements have been made to reduce the response time and increase the response speed of the solenoid valve.

In addition, according to the past experience of repairing the malfunction of the electromagnetic valve produced by the French Alstom company assembled on high-speed trains in China, the project team has independently increased the working air gap on the new solenoid valve. In this way, in response to the adjustment of the response time, the solenoid valve no longer needs to be returned to the original place of origin. It is only necessary to adjust the working air gap on the locomotive, which not only saves time, but also greatly reduces the cost of rework.

The electromagnetic valve and relief valve developed by the 695 plant for high-speed trains have the potential to replace imported products. At the same time, the ability to develop, manufacture and test the valves for high-speed trains has also been tested.