Study on the determination method of water content in wind turbine gear oil

FENG Liping; YIN Wenbo; LONG Guojun; WANG Juan; LIU Yongluo; WANG Xiaowei; XIE Jialin; AN Yikun; ZHU Chunhong; CHEN Yuanyuan; SUN Shijun

doi:10.19666/j.rlfd.202301007

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Study on the determination method of water content in wind turbine gear oil

更新时间：2025-09-28

- Study on the determination method of water content in wind turbine gear oil
- Thermal Power Generation Vol. 52, Issue 8, Pages: 156-161(2023)
- 作者机构：
  
  西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202301007
  CLC： TM614
- Published：2023
- 稿件说明：
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FENG Liping, YIN Wenbo, LONG Guojun, et al. Study on the determination method of water content in wind turbine gear oil[J]. Thermal power generation, 2023, 52(8): 156-161.
DOI：

FENG Liping, YIN Wenbo, LONG Guojun, et al. Study on the determination method of water content in wind turbine gear oil[J]. Thermal power generation, 2023, 52(8): 156-161. DOI： 10.19666/j.rlfd.202301007.

摘要

通过对现有油中水分检测方法原理和齿轮油的组分及其水分监督需求的分析，发现现有方法均无法准确快速检测齿轮油中的水分。以风电用新齿轮油和运行齿轮油为研究对象，通过条件选择性试验、结果准确性研究和精密度测定，给出了可准确快速检测齿轮油中水分的方法。该方法采用卡氏加热炉和卡尔费休库仑法水分分析仪联用，以压缩氮气或空气为载气，载气经分子筛干燥后，通过套筒气针进出密闭的含有1 g油样和1 mL正庚烷测量瓶，在150℃下加热测量瓶分离、转移油样中水分，使其进入卡尔费休水分分析仪中进行检测。该方法标定结果与外加水的理论值的偏差在±5%以内，精密度的重复性不超过0.70x~(0.604) mg/kg，再现性不超过0.64x~(0.714) mg/kg。

Abstract

Through the analysis of the principle of the existing methods for determination the water content in oil and the components of gear oil

as well as monitoring needs of water content in gear oil

it is found that the existing methods can not accurately and quickly detect the water content in gear oil. the new gear oil and running gear oil for wind power was selected as experiment object

through study of selection of test conditions and the accuracy of the results

it is found a method that can accurately and quickly detect the water content in the gear oil.This method is a combination of the Karl Fischer coulometry water analyzer and the heating furnace. With compressed nitrogen or air as the carrier gas

after the carrier gas is dried through the molecular sieve

it cross the sealed test bottle containing 1g oil sample and 1mL n-heptane by the sleeve air needle

Heat the bottle at 150 ℃

and transfer the water in the oil sample to enter the Karl Fischer water analyzer for detection.

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