Article(id=1153764468866666747, tenantId=1146029695717560320, journalId=1152916057816748034, issueId=1153764464802390978, articleNumber=null, orderNo=null, doi=10.3969/j.issn.2095‒1469.2025.01.04, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1727280000000, receivedDateStr=2024-09-26, revisedDate=1728662400000, revisedDateStr=2024-10-12, acceptedDate=null, acceptedDateStr=null, onlineDate=1753008485285, onlineDateStr=2025-07-20, pubDate=1737302400000, pubDateStr=2025-01-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1753008485285, onlineIssueDateStr=2025-07-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1753008485285, creator=13701087609, updateTime=1753008485285, updator=13701087609, issue=Issue{id=1153764464802390978, tenantId=1146029695717560320, journalId=1152916057816748034, year='2025', volume='15', issue='1', pageStart='1', pageEnd='123', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1753008484316, creator=13701087609, updateTime=1754446917960, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1159797692844486845, tenantId=1146029695717560320, journalId=1152916057816748034, issueId=1153764464802390978, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1159797692844486846, tenantId=1146029695717560320, journalId=1152916057816748034, issueId=1153764464802390978, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=31, endPage=37, ext={EN=ArticleExt(id=1153764469428703485, articleId=1153764468866666747, tenantId=1146029695717560320, journalId=1152916057816748034, language=EN, title=Study on the Structure and Characteristics of Two-Stage Piston-Type Hydrogen Pressure Reducers, columnId=1153756965466530584, journalTitle=Chinese Journal of Automotive Engineering, columnName=Green and Low-Carbon Technologies Section, runingTitle=null, highlight=null, articleAbstract=
This article analyzes the structural characteristics and operating principles of a two-stage piston hydrogen pressure reducer with constant output. Based on the principles of statics and aerodynamics, a theoretical calculation model is established to examine the pressure output characteristics and flow properties of this pressure reducer. Theoretically, it has been proven that a two-stage structure pressure reducer provides more stable output pressure than a single-stage pressure reducer. Due to the extremely small size of hydrogen molecules, they are prone to leakage, making dynamic sealing between the piston and the housing very challenging. This article proposes a design strategy to replace dynamic sealing with static sealing, providing guidance for the development of high-pressure hydrogen pressure reducers.
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剖析了两级活塞式定值输出氢气减压器的结构特点及其工作原理,基于静力学和气体动力学原理,建立高压两级活塞式氢气减压器压力输出特性及流量特性的理论计算模型,从理论上证明了两级结构减压器的输出压力较单级减压器具有更加稳定的输出特性。因为氢气分子粒径非常小,容易泄漏,活塞与壳体之间的动密封非常困难,提出了将动密封改为静密封的设计方案,为高压氢气减压器的开发提供指导。
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| 参数 | 值 |
| d/mm | 2.67 |
| △/mm | 0.5 |
| d11/mm | 11 |
| D11/mm | 21.3 |
| δ10/mm | 5 |
| δ1max/mm | 2 |
| δ1/mm | 0 |
| S11/mm | 7 |
| C1/(N/mm) | 200 |
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| 参数 | 值 |
| d/mm | 2.67 |
| △/mm | 0.5 |
| d11/mm | 11 |
| D11/mm | 21.3 |
| δ10/mm | 5 |
| δ1max/mm | 2 |
| δ1/mm | 0 |
| S11/mm | 7 |
| C1/(N/mm) | 200 |
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| 参数 | 值 |
| d0/mm | 3 |
| d21/mm | 5.5 |
| d22/mm | 5 |
| D21/mm | 7.2 |
| D22/mm | 33.4 |
| δ2max/mm | 3 |
| δ210/mm | 5 |
| δ220/mm | 2 |
| δ2/mm | 0 |
| S21/mm | 2 |
| S22/mm | 5 |
| C21/(N/mm) | 50 |
| C22/(N/mm) | 300 |
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| 参数 | 值 |
| d0/mm | 3 |
| d21/mm | 5.5 |
| d22/mm | 5 |
| D21/mm | 7.2 |
| D22/mm | 33.4 |
| δ2max/mm | 3 |
| δ210/mm | 5 |
| δ220/mm | 2 |
| δ2/mm | 0 |
| S21/mm | 2 |
| S22/mm | 5 |
| C21/(N/mm) | 50 |
| C22/(N/mm) | 300 |
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