|本期目录/Table of Contents|

[1]孟 剑,刘小斌.LNG接收站高压泵平衡机构优化及计算流程研究[J].工业仪表与自动化装置,2021,(03):93-96.[doi:1000-0682(2021)03-0000-00]
 Meng Jian,LIU Xiaobin.Study on optimization and calculation process of high pressure pump balancing mechanism in LNG receiving Station[J].Industrial Instrumentation & Automation,2021,(03):93-96.[doi:1000-0682(2021)03-0000-00]
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LNG接收站高压泵平衡机构优化及计算流程研究

《工业仪表与自动化装置》[ISSN:1000-0682/CN:61-1121/TH]

卷:
期数:
2021年03期
页码:
93-96
栏目:
出版日期:
2021-06-15

文章信息/Info

Title:
Study on optimization and calculation process of high pressure pump balancing mechanism in LNG receiving Station
作者:
孟 剑1刘小斌2
1.中国石化青岛炼油化工有限责任公司,山东 青岛 266000;
2.西安陕鼓动力股份有限公司,陕西 西安 710075
Author(s):
Meng Jian1LIU Xiaobin2
1. Sinopec Qingdao refining and Chemical Co., Ltd.,Shandong Qingdao 266000,China;
2. Xi’an Shaangu Power Co., Ltd.,Shaanxi Xi’an 710075,China
关键词:
LNG高压泵平衡装置轴向力平衡力
Keywords:
LNG high pressure pumpbalancing deviceaxial forcebalance force
分类号:
TP273
DOI:
1000-0682(2021)03-0000-00
文献标志码:
B
摘要:
国内某LNG接收站共设置4台高压泵,出厂设计级数18级,该高压泵自投入运行以来,一直采用13级方案,后5级用过流件替代,运行期间一切性能指标正常。增加至18级方案后,运行约3000 h时(正常运行周期25 000 h),4台泵先后均出现振动、噪声值增加,振速由1.6 mm/s增大至4 mm/s;该故障属共性问题,对泵解体检查后发现轴承压盖端面、轴承外圈内侧有磨损。经分析导致振速增大的根本原因是由于轴承的损坏所致,即增加5级叶轮后,平衡机构前后压差增大,平衡力增大,导致残余轴向力偏大,致使轴承运行寿命缩短。该文研究了优化高压泵平衡机构和降低残余轴向力的方案,并归纳出了平衡装置优化计算流程,可推广应用于平衡机构采用双平衡鼓结构的多级泵中。
Abstract:
LNG receiving station set up 4 high pressure pumps, The pump design grade of 18. This high pressure pump has always adopted a 13 grade since it was put into operation, and the last 5 grades have been replaced by flow components. All performance indexes are normal during operation.After increasing to the 18-stage, the vibration and noise value of the 4 pumps successively increased when operating for about 3000h (25000h normal operating cycle), and the vibration speed increased from 1.6mm/s to 4mm/s.The fault is a common problem. After disassembly inspection of the pump, bearing cover end face and inside the bearing outer ring was found wear.The fundamental reason for the increase of vibration velocity is the damage of bearing, that is, after adding 5-stage impeller, the pressure difference between the front and back of the balancing mechanism increases, and the balance force increases, leading to the larger residual axial force and the shorter running life of the bearing.In this paper, how to optimize the balancing mechanism of high pressure pump and reduce the residual axial force is described in detail, and the optimized calculation process of balancing device is summarized, which can be widely used in multi-stage pumps with double balancing drum structure.

参考文献/References:

[1] 关醒凡.现代泵理论与设计[M].北京:中国宇航出版社,2011,4.

[2] 沈阳水泵研究所,中国农业机械化科学研究院.叶片泵设计手册[M].北京:机械工业出版社,1983:第一版.

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备注/Memo

备注/Memo:
收稿日期:2020-12-18
作者简介:孟剑(1967),男,高级工程师,硕士,青岛炼化公司设备专家。1989年毕业于中国石油大学化工设备与机械专业,现在中国石化青岛炼化公司从事石油化工转动设备管理、检修以及新技术开发应用等工作。
更新日期/Last Update: 1900-01-01