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基于单线圈涡流传感器的NK-33涡轮泵机组推力轴承磨损诊断

Wear Diagnostics of the Thrust Bearing of NK-33 Turbo-Pump Unit on the Basis of Single-Coil Eddy Current Sensors.

作者信息

Belosludtsev Viktor, Borovik Sergey, Danilchenko Valeriy, Sekisov Yuriy

机构信息

Samara Federal Research Scientific Center RAS, Institute for the Control of Complex Systems RAS, 443020 Samara, Russia.

Public Joint-Stock Company, "UEC-Kuznetsov", 443009 Samara, Russia.

出版信息

Sensors (Basel). 2021 May 16;21(10):3463. doi: 10.3390/s21103463.

DOI:10.3390/s21103463
PMID:34065686
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8156650/
Abstract

The problem of early wear diagnostics of the combined journal-and-thrust bearing of the turbo-pump unit (TPU) of the liquid-propellant rocket engine NK-33 is considered. A feature of the problem is the significant restriction on modifications of the power plant's design. The original solution based on replacing the standard induction sensors of the turbo-pump rotational speed currently used in TPU by single-coil eddy current sensors (SCECS) with sensitive elements in the form of a segment of a linear conductor is proposed. The SCECS provide the monitoring of the axial displacement of the shaft in the thrust bearing, which characterizes the state of the unit and increases with the bearing wear. The function of the TPU shaft's rotational speed measuring also remains. The article describes the proposed approach as well as a laboratory prototype of the system for early detection of the TPU thrust bearing's wear. The results of the prototype research that confirm the feasibility of the proposed approach are analyzed.

摘要

研究了液体推进剂火箭发动机NK - 33涡轮泵单元（TPU）组合式径向滑动轴承和止推轴承的早期磨损诊断问题。该问题的一个特点是对动力装置设计修改的重大限制。提出了一种基于用单线圈涡流传感器（SCECS）取代目前TPU中使用的涡轮泵转速标准感应传感器的原始解决方案，该传感器的敏感元件为线性导体段形式。SCECS可监测止推轴承中轴的轴向位移，该位移表征了装置的状态，并随轴承磨损而增加。TPU轴转速测量功能也得以保留。本文描述了所提出的方法以及用于早期检测TPU止推轴承磨损的系统的实验室原型。分析了原型研究结果，证实了所提方法的可行性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7dee/8156650/fc159b4eb103/sensors-21-03463-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7dee/8156650/dd2dd4f9b9ec/sensors-21-03463-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7dee/8156650/1b2702da8648/sensors-21-03463-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7dee/8156650/10e8af76f2a1/sensors-21-03463-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7dee/8156650/1d3c4934b3ad/sensors-21-03463-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7dee/8156650/93f74f03be2c/sensors-21-03463-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7dee/8156650/3e0282ff3509/sensors-21-03463-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7dee/8156650/2160a99aaede/sensors-21-03463-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7dee/8156650/fc159b4eb103/sensors-21-03463-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7dee/8156650/dd2dd4f9b9ec/sensors-21-03463-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7dee/8156650/1b2702da8648/sensors-21-03463-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7dee/8156650/10e8af76f2a1/sensors-21-03463-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7dee/8156650/1d3c4934b3ad/sensors-21-03463-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7dee/8156650/93f74f03be2c/sensors-21-03463-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7dee/8156650/3e0282ff3509/sensors-21-03463-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7dee/8156650/2160a99aaede/sensors-21-03463-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7dee/8156650/fc159b4eb103/sensors-21-03463-g008.jpg

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Single-Coil Eddy Current Sensors and Their Application for Monitoring the Dangerous States of Gas-Turbine Engines.
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Sensors (Basel). 2019 Aug 25;19(17):3694. doi: 10.3390/s19173694.
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