Locomotive booster pressure maintaining filtering system with memory self-checking function

Abstract

The invention relates to a locomotive booster pressure maintaining filtering system with a memory self-checking function, belongs to the technical field of booster lubrication control, and provides a booster oil supply self-checking system which can monitor supplied oil pressure of a booster and has a memory reminding function. The locomotive booster pressure maintaining filtering system is characterized in that an output end of a main engine oil pump is communicated with an oil inlet of a filter through an oil pipe, an oil outlet of the filter is communicated with a lubricating oil pipeline inlet of the booster through a pressure reducing valve, and a lubricating oil pipeline outlet of the booster is communicated with an oil tank; and a first pressure sensor used for detecting oil pressure of the oil inlet and a second pressure sensor used for detecting oil pressure of the oil outlet are respectively arranged on the oil inlet and the oil outlet of the filter, signal output ends of the first pressure sensor and the second pressure sensor are connected with an input port of a central processing unit (CPU) chip, and the CPU chip is connected with a display early warning device and a memorizer. The locomotive booster pressure maintaining filtering system with the memory self-checking function is suitable for lubrication of a locomotive booster system.

Description

technical field [0001] The invention relates to a locomotive supercharger pressure maintaining and filtering system with memory self-checking function, which belongs to the technical field of supercharger lubrication control. Background technique [0002] The turbochargers used in locomotive diesel engines generally have a high failure rate and many temporary repairs. The turbocharger failure rate accounts for more than 30% of the locomotive failure rate, such as oil seal leakage, carbon deposits and solidification, burning bearings, sweeping chambers and blades A series of problems such as damage, impeller rubbing against the shell, etc. often occur. These problems have plagued the transportation department for many years and have become a deep headache for the transportation department. The manufacturer has made many rectifications in response to this situation. However, Since the supercharger was originally used by ships, its deficiencies and shortcomings became more and ...

AI Technical Summary

Problems solved by technology

[0002] The turbochargers used in locomotive diesel engines generally have a high failure rate and many temporary repairs. The supercharger failure rate accounts for more than 30% of the locomotive failure rate, such as oil seal leakage, carbon deposits, burning bearings, sweeping chambers and blades. A series of problems such as damage, impeller rubbing against the casing, etc. often occur. These problems have plagued the transportation department for many years and have become a deep headache for the transportation department. The manufacturer has made many rectifications in response to this situation. However, Since the supercharger was originally used by ships, its shortcomings and shortcomings became more and more obvious in the face of the special structure and operating environment of the locomotive, which caused a great hidden danger to the safe use of the locomotive

[0003] Analyzing the common problems of their defects, it is found that the existing defects are: the speed of the locomotive supercharger is more than 24,000rpm. In order to solve the problem of the critical speed of the rotor, a flexible shaft must be used, so sliding bearings must be used, and in order to maintain a high floating sleeve If the speed is high, the inner clearance is required to be smaller, and the assembly clearance between the inner diameter of the floating ring and the main shaft is only 0.01-0.032mm. In this way, the precision of processing and manufacturing will be higher, and the requirements for use conditions will be more stringent. Especially the cleanliness of the engine oil; at present, the lubricating oil used in the locomotive diesel engine supercharger is the same engine oil used in the diesel engine, and its cleanliness is difficult to meet this requirement. negligible), improving the cleanliness of the oil is particularly important

[0004] The lubricating oil of the supercharger is provided by the main oil pump of the diesel engine. When the diesel engine of the locomotive suddenly stops, the oil in the pipeline flows back to the oil pan of the diesel engine, causing a sudden drop in the oil pressure at the end of the supercharger, but the supercharger is still at high speed for a short period of time. In the rotating state, at this time, it is very easy to cause damage to the supercharger due to lack of oil in the bearing. The oil seal structure of the supercharger is relatively weak, and oil leakage failures are prone to occur. On the other hand, oil pressure fluctuations are also an important factor for oil seal leakage. Oil seal leakage is one of the main causes of supercharger machine failure. Due to the above reasons, it is very easy to cause bearing burning, carbon deposits, supercharger rotor solidification, etc. during actual use, resulting in machine failure accidents. frequently occur

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