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Piston air compressor fault warning method, piston air compressor and rail train

A fault warning and air compressor technology, applied in the direction of machines/engines, liquid variable capacity machinery, mechanical equipment, etc., can solve the problems of high false alarm rate, high labor cost, time-consuming and labor-intensive, etc., and achieve accurate fault warning, The effect of low labor cost and scientific method

Active Publication Date: 2019-11-12
ZHUZHOU ELECTRIC LOCOMOTIVE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, piston air compressors are generally used in domestic subway vehicles and intercity EMU vehicles. There are mainly two ways to realize fault warning for this type of piston air compressor: one is online fault warning, because piston air compressors have 100 % of the working cycle (no intermediate stop time), so the fault and abnormal judgment can be realized by monitoring the time characteristics of the piston air compressor when it is running, but this method has a high false alarm rate and is very dependent on experience; the second is External maintenance personnel regularly check the external performance of the piston air compressor and make fault judgments based on their own experience, that is, judge by wiring conditions, lubricating oil color, filter element status and other components. This method not only requires high labor costs and is time-consuming laborious

Method used

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  • Piston air compressor fault warning method, piston air compressor and rail train
  • Piston air compressor fault warning method, piston air compressor and rail train
  • Piston air compressor fault warning method, piston air compressor and rail train

Examples

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Embodiment 1

[0046] The following combination figure 1 , figure 1 It is a flow chart of a piston air compressor fault warning method provided in the embodiment of this application. This application takes the piston air compressor commonly used on high-speed rail trains and using three-phase AC power supply as the object, and specifically includes the following steps :

[0047] S101: Obtain the actual current value of each phase of the three-phase power input terminal of the piston air compressor by using the current sensor;

[0048] This step aims to use the current sensor to measure the actual current value of each phase of the three-phase power input terminal of the piston air compressor. Specifically, the three-phase current input end of the piston air compressor is usually equipped with a connection post for easy connection, so the current sensor can be installed between the power supply and the connection post. Correspondingly, three current sensors are required to realize the meas...

Embodiment 2

[0068] The following combination figure 2 , figure 2 It is a flow chart of another piston air compressor fault warning method provided in the embodiment of the present application, which specifically includes the following steps:

[0069] S201: Using three current sensors to respectively obtain the preliminary current value of each phase input current from the connection pole of the three-phase power input end of the piston air compressor;

[0070] S202: Delay processing the obtained preliminary current value until the fluctuation of the preliminary current value within the preset time interval is smaller than the preset error range, and obtain the actual current value;

[0071] S201 obtains the preliminary current values ​​of the three input terminals of the three-phase power supply input terminals respectively through three current sensors, and adopts a delay processing method in S202 to eliminate instability, so that the fluctuation within the preset time interval is les...

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Abstract

The invention discloses a fault warning method for a piston type air compressor. The difference between the actual current value capable of reflecting the work state of the piston type air compressorand the normal current value in a normal work state serves as the judgment basis for fault warning, when the piston type air compressor utilizing three-phase alternating current serves as an example,two parameters including the current specific value between the actual current value of any phase and the upper limit of the normal current value and the specific value between the difference value ofactual current values of any two phases and the difference value of the upper limits of the normal current values are compared with the preset current threshold value and the difference value threshold value, and fault grades are obtained and corresponding fault warnings are sent when the two parameters are larger than the two threshold values simultaneously and the preset time duration is exceeded. Compared with an existing fault warning manner, the current value which can accurately reflect the work state of the air compressor is utilized, the manner is more scientific, the manual cost is lower, and fault warning is more accurate and timely. The invention further discloses the piston type air compressor and a rail high-speed train at the same time, and the piston type air compressor andthe rail high-speed train both have the beneficial effects.

Description

technical field [0001] The present application relates to the field of engineering equipment fault early warning, in particular to a piston air compressor fault early warning method, a piston air compressor and a rail train. Background technique [0002] The rail vehicle braking system generally uses high-pressure gas for braking. It is common to use an air compressor to compress the air to use compressed air to brake high-speed trains. Therefore, the working status of the air compressor is directly related to the braking. The function of the system, and the complete function of the train braking system is an important prerequisite to ensure the safety of all passengers on the train. [0003] At present, piston air compressors are generally used in domestic subway vehicles and intercity EMU vehicles. There are mainly two ways to realize fault warning for this type of piston air compressor: one is online fault warning, because piston air compressors have 100 % of the working...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B49/06F04B49/10
CPCF04B49/065F04B49/10
Inventor 阳靖段继超梅劲华委玉佳陈林熊梅
Owner ZHUZHOU ELECTRIC LOCOMOTIVE CO LTD