Method for evaluating reliability of performance state of reciprocating compressor

An evaluation method and compressor technology, which can be applied to liquid variable volume machinery, mechanical equipment, machines/engines, etc.

Active Publication Date: 2012-04-04
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Factors such as people's experience, knowledge level, and opinions often have a greater impact on the evaluation results, and the reliability of mechanical equipment is affected by many factors. Continue to use the traditional reliability quantitative calculation method to calculate the reliability of mechanical equipment It is relatively difficult and not scientific enough, but using fuzzy theory that is closer to reality to analyze and evaluate the reliability of mechanical equipment can obtain more ideal results.

Method used

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  • Method for evaluating reliability of performance state of reciprocating compressor
  • Method for evaluating reliability of performance state of reciprocating compressor
  • Method for evaluating reliability of performance state of reciprocating compressor

Examples

Experimental program
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Embodiment Construction

[0055] The implementation method and effect of this method will be described below through the reliability evaluation of the performance state of the 1.2 million t / a diesel hydrogenation reciprocating compressor C-1101A of Lanzhou Petrochemical Company.

[0056]On March 4, 2009, we collected data on hydrogenation unit C1101A. When going to the site the next day, unit A shut down for maintenance. It was learned from the maintenance personnel that a positioning pin on the piston rod bracket of the 2 cylinder fell off, and fell into the buffer tank from the outlet valve of the 2 cylinder, causing a loud noise. The function of the locating pin is to radially locate the support tile, and has little effect on the work of the piston. However, for safety reasons, the maintenance personnel installed a new locating pin. We use the data collected on March 4, 2009 as the failure data to verify whether the failure of the unit components can be judged through the reliability evaluation.

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Abstract

The invention relates to a method for evaluating the reliability of the performance state of a reciprocating compressor. The method comprises the following steps of: determining a factor set U, wherein the factor set is a set formed by taking various factors influencing an evaluated object as elements, and the comprehensiveness, sensitivity, chanciness and stability of indexes are required to be taken into consideration when the indexes are selected; establishing a weight set A, and giving a corresponding weight to each factor, wherein the weight set is required to meet conditions of normalization and non-negativity; determining a remark set V, wherein the remark set is a classic set consisting of possible evaluation results of the evaluated object, the number m of remark grades is more than 3, but less than or equal to 9 and is an odd number; evaluating a single factor, and establishing a fuzzy relation matrix R; after the factor weight set A and the evaluation matrix R are determined, obtaining a fuzzy comprehensive evaluation set B according to the multiplying operation of the fuzzy matrix; and processing the evaluation indexes by a maximum membership grade method or a weighted averaging method. The method is simple and practical and is easy to popularize and apply.

Description

technical field [0001] The invention relates to a method for evaluating the performance state reliability of a reciprocating compressor. Background technique [0002] Because of its wide pressure range, high thermal efficiency, strong adaptability, and high single-stage compression ratio, reciprocating compressors play an important role in many oil and gas processing, transportation, and other industrial sectors. Production has a big impact. In the process of its use, some failures will inevitably occur, which will affect the running state, and these will bring serious hidden dangers to safe production. Once the key equipment breaks down, it will not only cause huge economic losses, but also may endanger personal safety and have a significant social impact. [0003] Condition monitoring and reliability evaluation of reciprocating compressors can avoid unnecessary abnormal downtime and reduce economic losses. How to reduce the number of abnormal stoppages of refining and c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B51/00
Inventor 任世科张来斌段礼祥马斌高维娜魏杰李磊陈保利陈德昌陈勇陈霞闫凯赵英武骆重阳胡足高建苹孟凡薇
Owner PETROCHINA CO LTD
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