Magnetic levitation centrifugal compressor fault testing device and testing method

A centrifugal compressor and fault testing technology, which is applied to mechanical equipment, non-variable pumps, machines/engines, etc., can solve the problems of failures of single compressors that cannot be detected in time, the accuracy and stability of internal bearings cannot be identified and judged, Problems such as the high failure rate of the compressor on-line, achieve the effect of automatic and rapid detection, increase the failure detection rate, and improve reliability

Pending Publication Date: 2021-03-19
GREE ELECTRICHEFEI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The failure of a single compressor cannot be detected in time, and can only be detected through the whole machine testing process. Once the abnormality needs to be replaced, the rework will consume a lot of manpower and working hours;
[0004] 2. The compressor has a high failure rate when it goes online, and there is no effective fault diagnosis method before it goes online. Manual inspection can only identify whether the appearance is abnormal, and the accuracy and stability of the internal bearing cannot be identified and judged

Method used

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  • Magnetic levitation centrifugal compressor fault testing device and testing method
  • Magnetic levitation centrifugal compressor fault testing device and testing method
  • Magnetic levitation centrifugal compressor fault testing device and testing method

Examples

Experimental program
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Effect test

Embodiment 1

[0043] In this example, if figure 1 As shown, a magnetic levitation centrifugal compressor fault testing device is provided, including: a frequency converter 200 and a control module 100; It is used to connect with the bearing controller of the compressor under test, the second control terminal of the control module 100 is connected to the signal input terminal of the frequency converter 200, and the signal output terminal of the frequency converter 200 is used to communicate with the tested The measuring compressor is connected, and the power supply terminal of the frequency converter 200 is used for connecting with the second power supply.

[0044] Specifically, the frequency converter 200 is used to control the rotational speed of the motor of the compressor under test. Specifically, the frequency converter 200 changes the frequency and period of the AC power supply to the motor of the compressor under test, so as to control the speed of the compressor under test. The purp...

Embodiment 2

[0061] In this example, if figure 2 As shown, a magnetic levitation centrifugal compressor fault testing method is provided, including:

[0062] Step 210, sending a first signal to the compressor under test to control the bearing controller of the compressor under test to work, so that the bearing of the compressor under test breaks away from the bearing housing.

[0063] Step 220, controlling the compressor under test to start up through a frequency converter.

[0064] Step 230, detecting whether the operating frequency of the compressor under test reaches a first preset frequency.

[0065] Step 240, when it is detected that the operating frequency of the compressor under test reaches the first preset frequency, the frequency converter is used to control the operating frequency of the compressor under test to increase.

[0066] Step 250, detecting whether the operating frequency of the compressor under test reaches a second preset frequency, wherein the second preset frequ...

Embodiment 3

[0074] In this example, if image 3 As shown, a magnetic levitation centrifugal compressor fault testing method is provided, including:

[0075] Step 310, the first control module sends a first signal to the compressor under test to control the bearing controller of the compressor under test to work so that the bearing of the compressor under test breaks away from the bearing seat;

[0076] Step 320, the second control module controls the compressor under test to start through the frequency converter;

[0077] Step 330, the second control module detects whether the operating frequency of the compressor under test reaches a first preset frequency;

[0078] Step 340, when the second control module detects that the operating frequency of the compressor under test reaches the first preset frequency, control the operating frequency of the compressor under test to increase through the frequency converter;

[0079] Step 350, the second control module detects whether the operating fre...

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Abstract

The invention provides a magnetic levitation centrifugal compressor fault testing device and testing method. The magnetic levitation centrifugal compressor fault testing device comprises a frequency converter and a control module, wherein the power supply end of the control module is used for being connected with a first power supply; the first control end of the control module is used for being connected with a bearing controller of a tested compressor; the second control end of the control module is connected with the signal input end of the frequency converter; the signal output end of thefrequency converter is used for being connected with the tested compressor; and the power supply end of the frequency converter is connected with a second power supply. The compressor and a motor of the compressor are controlled to work respectively, so that the compressor is detected before being put on line, automatic and rapid detection of no-load test of a compressor single body is effectivelyrealized, the fault detection rate is improved, and the reliability of the compressor is improved.

Description

technical field [0001] The invention relates to the technical field of magnetic levitation centrifugal refrigeration compressor testing, in particular to a magnetic levitation centrifugal compressor failure testing device and testing method. Background technique [0002] It has been more than 20 years since the initial research on the magnetic levitation centrifugal refrigeration compressor. At present, the magnetic levitation centrifugal refrigeration compressor has been put into practical application in large quantities because of its high efficiency, low maintenance cost, low noise, and light body. Due to its small characteristics, the demand for it in the industry is increasing and even the supply is in short supply. Because the internal bearings of the magnetic levitation centrifugal refrigeration compressor have no mechanical contact, the precision and stability of the bearing fit are high. During its transfer and long-distance transportation, the bearings are easily d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D27/00
CPCF04D27/001
Inventor 兰凤梅李敏
Owner GREE ELECTRICHEFEI
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