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用 技术应用 / / Technology Application石油石化节能与计量 https://gwyt.cbpt.cnki.net压差发电技术在长输天然气管道的应用前景高楠1李景雪2张俊伟1孙飞1肖枫3（1.国家管网集团储运技术发展有限公司；2.国家管网集团湖南公司；3.大庆钻探工程有限公司）摘要：天然气压差发电技术在国内外发展较为成熟。国外余压利用技术研究早，工艺路线成熟，但实际工程应用案例少；国内起步虽晚，但近年在国家节能减排支持下发展迅速。天然气膨胀发电系统主要由膨胀机等构成，国内主要有透平、双转子、螺杆、无油径向透平膨胀机4 种发电设备，各有优缺点。长输管道余压资源丰富，潜力大，但由于长输管道本身运行特点，实施余压发电改造会面临设备运行条件限制、地理位置偏僻等问题。建议通过优选站场建设、积累经验等方式推进该技术应用，助力企业增效与国家“双碳”目标的实现。关键词：天然气长输管道；压差发电；透平膨胀机；双碳DOI: 10.3969/j.issn.2097-3322.2025.08.002Application prospect of differential pressure power generation technologyin long-distance natural gas pipelineGAO Nan1 ，LI Jingxue 2 ，ZHANG Junwei 1 ，SUN Fei 1 ，XIAO Feng 31 Storage Technology Development Co.，Ltd.，Pipechina2 Hunan Company，Pipechina3 Daqing Drilling & Exploration Co.，Ltd.Abstract： The differential pressure power generation technology of natural gas is relatively mature at homeand abroad. In foreign countries, the research on residual pressure utilization technology is early，and the pro-cess route is mature，but there are few practical engineering application cases. However，it started late in Chi-na，but it has developed rapidly in recent years with the support of national energy conservation and emissionreduction.The natural gas expansion power generation system is mainly composed of expander. There are fourkinds of power generation equipment in China，including turbine，double rotor，screw and oil-free radialturbine expander，each with advantages and disadvantages.The long-distance pipeline is rich in residual pres-sure resources and has great potential. However，due to the operation characteristics of long-distance pipelineitself，the implementation of residual pressure power generation transformation will face problems such as lim-ited equipment operation conditions and remote geographical location. It is suggested to promote the technologyapplication by optimizing station construction and accumulating experience，which helps enterprises increaseefficiency and achieves the national " double carbon " goal.Keywords： long-distance natural gas pipeline； pressure difference power generation； turbine expander；dual carbon第一作者简介：高楠，工程师，2013年毕业于常州大学（油气储运专业），从事仪表自动化、装备技术工作，18062754755，287129775@qq.com，天津市滨海新区融合路 681号宝策大厦，300451。引文：高楠，李景雪，张俊伟，等．压差发电技术在长输天然气管道的应用前景[J]．石油石化节能与计量，2025，15（8）：7-11.GAO Nan，LI Jingxue，ZHANG Junwei，et al．Application prospect of differential pressure power generation technology inlong-distance natural gas pipeline[J]．Energy Conservation and Measurement in Petroleum & Petrochemical Industry，2025，15（8）：7-11.7