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Application of Magnetostrictive Liquid Level Sensor in Fuel Level Measurement of Diesel Locomotive

Source: Nadu Technology Views : Time: 2019-12-16 14:07

The overall goal of energy saving for the whole road is to reduce the energy consumption of railway unit transportation income, and energy conservation management has reached a new level. The locomotive fuel consumption is the main point of the cost of the locomotive section, which accounts for about 70% of the operating costs. Each section has been continuously improving management measures in terms of fuel management, and controls from the "storage, development, receipt, and use" of fuel. In the "use" link, the measurement of the fuel position of the locomotive during operation is the basis of fuel management. Among the methods for measuring the height of the liquid level are the liquid level measurement method that appeared in the 1980s, the pressure and differential pressure transmitter measurement methods that appeared in the 1990s, and the hybrid measurement method combining these two methods. . These measurement methods not only have a large investment in equipment, but also are difficult to adapt to the locomotive in operation. With the application and development of the magnetostrictive liquid level sensor , it has provided advanced methods for the monitoring of locomotive fuel due to its high accuracy, corrosion resistance and vibration resistance.
The magnetostrictive liquid level sensor fixes the magnet in the float, and the movement of the liquid surface causes the float to move. The installation of the magnetostrictive liquid level sensor on the locomotive To overcome the measurement error caused by the fuel fluctuation during the operation of the locomotive, the middle position of the top of the fuel tank was selected when the sensor was installed. Considering the operation of the locomotive, when installing the sensors, the two sensors are “built-in” side by side from the manhole cover on the top of the fuel tank. The upper part of the sensor is connected with the manhole cover, and the lower part is in direct contact with the bottom of the fuel tank, which prevents the vibration of the sensor caused by the sway of the locomotive.
Installed in "built-in" mode, compared with the "side-hanging" installation from the fuel tank oil gauge proposed in the original design. The pressure difference between the sensors due to the instantaneous vacuum caused by the oil level surge greatly improves the measurement effect. "Parallel built-in" two identical sensors, any of which is used as a backup, under normal circumstances, the average value of the two sensors is used. When one sensor fails, because both sensors are in the middle of the fuel tank, the other sensor can still work normally, which enhances the reliability of the system.
The diesel locomotive fuel consumption analysis system based on the magnetostrictive liquid level sensor can analyze the collected data and display real-time technical information such as the amount of fuel, the amount of fuel, the fuel consumption rate, and the operating parameters of the diesel engine. Through wireless transmission, the locomotive section can query and display the instantaneous fuel consumption, fuel consumption and total fuel consumption of the locomotive fuel at any time. Compared with maps, fuel management, consumption reduction and locomotive maintenance provide scientific management methods and basis.


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