On-Line Prediction Method of Compressor Faults in Rail Vehicle Air Conditioning Units

A technology for air-conditioning units and rail vehicles, applied in forecasting, machine/engine, rail vehicle heating/cooling, etc., to achieve the effect of improving operational reliability
CN110422189BActive Publication Date: 2020-05-12石家庄国祥运输设备有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
石家庄国祥运输设备有限公司
Publication Date
2020-05-12

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Abstract

The invention discloses an online prediction method for compressor faults in rail vehicle air-conditioning units, which belongs to the technical field of rail vehicle air-conditioning and includes the following steps: step A, collecting exhaust pressure and suction pressure data; step B, calculating two sets of refrigeration The pressure ratio difference and the average value of the pressure ratio difference of the agent system, and calculate the current difference and the average value of the current difference at the same time; step C, if certain conditions are met, and the pressure ratio difference in the continuous n data acquisition cycles at the same time If both the absolute value of the average value of the value and the absolute value of the average value of the current difference have an increasing trend, the air conditioner unit issues a compressor failure warning. The present invention collects the operating data of the compressor, monitors the operating state of the compressor, warns of compressor failure in advance, performs active operation and maintenance based on the operating state of the compressor, and improves the operating reliability of the air conditioner.
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Description

technical field

[0001] The invention belongs to the technical field of rail vehicle air conditioning, and in particular relates to an online prediction method for compressor faults in rail vehicle air conditioning units. Background technique

[0002] As a public transportation product, the rail vehicle air conditioner is very important for its stable and safe operation. The compressor is the core component of the normal operation of the air conditioner, and its failure will affect the comfort of the passengers in the car and reduce the driving function of the vehicle.

[0003] With the development of industrial control technology and network technology, PHM (abbreviation of Prognostic and Heath Management), that is, failure prediction and health management, has been gradually implemented in the field of rail vehicle component maintenance and repair, and has achieved initial results. In view of the large number of vehicle components, the PHM solution of the components needs ...

Claims

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