Multi-source signal fusion early warning method for reciprocating compressor
A compressor, source signal technology, applied in mechanical equipment, machine/engine, computer parts, etc., can solve the problems of lack of flexibility, poor reliability, low efficiency, etc., and achieve the effect of good flexibility and good reliability
Active Publication Date: 2022-06-24
CHINA PETROLEUM & CHEM CORP
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Problems solved by technology
The abnormal early warning methods in the patent applications listed above mostly rely on single-source signals to achieve early warning, and the reliability is poor; while the diagnosis method based on multi-source signals is a diagnosis under a single load. When the reciprocating compressor works under multiple loads, Using single load diagnosis method for separate diagnosis lacks flexibility and low efficiency
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[0057] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0058] like figure 1 As shown, a multi-source signal fusion early warning method for a reciprocating compressor includes the following steps:
[0059] (1) Obtain the full cycle data under the specified representative load:
[0060] The working load interval (0%, 100%) of the reciprocating compressor is equally divided into N gear intervals:
[0061] (100% / N*(n-1), 100% / N*n], n=1,...,N;
[0062] Representative load L for each gear range n For 100% / N*n, obtain the reciprocating compressor at each representative load L n Under the whole cycle data, at each representative load L n Get N down L Assemble the whole cycle data, the whole cycle data includes the whole cycle vibration signal S of the cylinder surface of the reciprocating compressor v , the full cycle dynamic pressure signal S inside the cylinder p And the whole cycle dyna...
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The invention discloses a multi-source signal fusion early warning method for a reciprocating compressor. The method comprises the following steps: (1) acquiring full-period data under a specified representative load; (2) calculating a mechanism feature vector of the whole period data; (3) calculating a feature vector of representative loads; (4) calculating the similarity of adjacent representative loads; (5) combining the representative loads with similar features; a dynamic pressure signal and an indicator diagram in the cylinder are subjected to multi-source signal fusion diagnosis, and the reliability is good; the working load interval of the reciprocating compressor is divided into gear intervals, representative loads are selected from the gear intervals, signal abnormity diagnosis is carried out on new full-period signals under new loads belonging to the representative load intervals or the gear intervals on the basis of the multiple specified representative loads, and the method is good in flexibility, scientific and efficient.
Description
technical field [0001] The present application relates to the technical field of equipment state monitoring and diagnosis, in particular to a multi-source signal fusion early warning method for a reciprocating compressor. Background technique [0002] The reciprocating compressor is the heart of many key mechanical systems. Once a serious failure occurs, the entire equipment system will fail or be damaged. Because the structure of the reciprocating compressor is very complex, the working conditions are changeable, and the working conditions are very bad, which leads to a high failure rate. Therefore, when an abnormal signal occurs, it is an urgent problem to give an early warning to prevent the deterioration of the failure and improve reliability and safety. . [0003] Among them, the vibration signal can directly reflect the vibration trend of the main impact components inside the compressor, and become the main reference data for abnormal casing vibration, parts breakage ...
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IPC IPC(8): F04B51/00F04B49/10G06K9/62
CPCF04B51/00F04B49/10G06F18/25
Inventor 原栋文狄剑杰王永超刘浩姜巧
Owner CHINA PETROLEUM & CHEM CORP