LNG接收站用反装船泵现场安装关键技术研究
Key technologies for on-site installation of back-loading pumps at LNG receiving terminals
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- 引用格式:
-
刘中河,艾绍平,张奕,胡兴乔,王卫晓.LNG接收站用反装船泵现场安装关键技术研究[J].天然气与石油,2026,44(3):35-39.doi:10.3969/j.issn.1006-5539.2026.03.005
Liu Zhonghe, Ai Shaoping, Zhang Yi, Hu Xingqiao, Wang Weixiao.Key technologies for on-site installation of back-loading pumps at LNG receiving terminals[J].Natural Gas and Oil,2026,44(3):35-39.doi:10.3969/j.issn.1006-5539.2026.03.005
- DOI:
- 10.3969/j.issn.1006-5539.2026.03.005
- 作者:
- 刘中河 艾绍平 张奕 胡兴乔 王卫晓
Liu Zhonghe, Ai Shaoping, Zhang Yi, Hu Xingqiao, Wang Weixiao
- 作者单位:
- 北京市燃气集团有限责任公司, 天津 300450
Beijing Gas Group Co., Ltd., Tianjin, 300450, China
- 关键词:
- LNG接收站;反装船泵;安装工艺;底阀;精度控制
LNG receiving terminal; Back-loading pump; Installation technology; Bottom valve; Precision control
- 摘要:
- 液化天然气(Liquefied Natural Gas,LNG)接收站反装船泵作为深冷环境下的精密旋转设备,其安装质量直接决定接收站的运行安全与效率。为了向同类型深冷旋转设备的现场安装提供技术依据,提升反装船泵长期稳定运行水平,以某大型LNG应急储备项目为案例,采用案例分析法与关键技术解构法,系统研究了LNG反装船泵现场安装的关键技术体系。首先阐述了反装船泵的结构特性与设计要点;其次针对安装过程中的泵井直线度检测、底阀密封性测试、假泵验证、泵头分段吊装及坐泵精度控制等关键工序,进行了深入的技术分析。研究识别出安装过程的三大技术难点为泵井几何尺寸偏差导致卡阻风险、底阀密封失效风险、坐泵开度超差风险，提出了全过程尺寸链控制技术和基于动态称重的坐泵精度控制方法两项解决方案,有效保障了安装精度与可靠性。研究结果为LNG接收站同类设备的安装提供了技术参考和实践指导,对推动LNG关键设备安装技术的标准化与国产化有积极意义。
As precision rotating equipment operating in cryogenic environments, Liquefied Natural Gas(LNG) back-loading pumps play a critical role in receiving terminal operations, and their installation quality directly determines operational safety and efficiency. In order to provide a technical basis for the on-site installation of similar deep-cooling rotating equipment and enhance the long-term stable operation level of the back-loading pump, taking a large-scale LNG emergency reserve project as a case study, this paper systematically investigates the key technical framework for on-site installation of LNG back-loading pumps through case analysis and key technology deconstruction. The structural characteristics and design features of back-loading pumps are first elaborated. Subsequently, in-depth technical analysis is conducted on key installation procedures, including pump well straightness inspection, bottom valve seal testing, dummy pump verification, segmental hoisting of the pump head, and pump seating precision control. Three major technical challenges are identified:geometric deviation of the pump well causing jamming, bottom valve seal failure, and out-of-tolerance pump seating clearance. Based on these findings, two core solutions are proposed:a full-process dimensional chain control technique and a dynamic weighing-based pump seating precision control method, both of which effectively ensure installation accuracy and reliability. The results provide technical references and practical guidance for the installation of similar equipment at LNG receiving terminals, and carry positive significance for advancing the standardization and localization of key LNG equipment installation technology.
