《GB/T 44916-2024 船舶和海上身手船用超低温闸阀计划与试验请求》是一项邦度圭臬，旨正在榜样用于船舶及海上措施中的超低温闸阀的计划、修设、磨练与试验流程。该圭臬实用于职责温度鸿沟正在-196°C至+50°C之间的液化自然气（LNG）等超低温介质输送编制中运用的闸阀。

　　圭臬实质涵盖了质料拣选、布局计划、修设工艺、功能测试等众个方面的请求。对付质料而言，夸大了务必选用可以承担至极低温情况而不发作脆性断裂或明显变形的材质；同时，思量到海洋情况下的腐化题目，也对质料的耐腐化功能提出了详细请求。正在布局计划上，除了通例的压力品级、密封功能等根基考量外，还异常体贴了因为温差导致的热应力影响以及提防外部热量向内部传导的计划设施。

　　其它，《GB/T 44916-2024》周密法则了一系列针对超低温条目下闸阀成效性和平和性的测试举措，征求但不限于气密性试验、强度试验、低温操作试验等。这些测试旨正在确保产物可以正在预订的职责条目下坚固运转，并具备足够的平和裕度以应对突发状态。

　　绪言··························································································································Ⅲ

　　1鸿沟·······················································································································1

　　2榜样性援用文献········································································································1

　　3术语和界说··············································································································2

　　4压力温度品级···········································································································3

　　4.1介质类型···········································································································3

　　4.2职责压力和计划温度····························································································3

　　5计划·······················································································································4

　　5.1闸阀根基布局·····································································································4

　　5.2质料根基请求·····································································································4

　　5.3阀体的型式与质料·······························································································4

　　5.4加长阀盖的计划与质料·························································································5

　　5.5闸板的计划型式与质料·························································································5

　　5.6阀杆的型式与质料·······························································································6

　　5.7阀杆密封···········································································································6

　　5.8阀座密封圈的型式与质料······················································································6

　　5.9螺栓和螺母的型式与质料······················································································7

　　5.10驱动安装和操作机构的请求··················································································7

　　5.11轮廓惩罚··········································································································7

　　6焊接和热惩罚···········································································································7

　　6.1焊接·················································································································7

　　6.2热惩罚··············································································································8

　　7试验和磨练··············································································································8

　　7.1质料磨练···········································································································8

　　7.2无损检测···········································································································8

　　7.3尺寸查验···········································································································9

　　7.4外观目视查验·····································································································9

　　7.5热惩罚查验········································································································9

　　7.6操作功能试验·····································································································9

　　7.7压力试验、上密封试验和密封性试验·········································································9

　　7.8防火试验··········································································································11

　　7.9低温试验··········································································································11

　　8标识·····················································································································12

　　附录A（原料性）超低温闸阀——示例·············································································13

　　参考文献····················································································································14

　　本文献依据GB/T1.1—2020《圭臬化职责导则第1个别：圭臬化文献的布局和草拟法例》的规

　　本文献等同采用邦际圭臬ISO19037：2019《船舶和海上身手船用超低温闸阀计划与试验

　　——修正了邦际圭臬中的印刷舛错，将5.5.1.4条和5.5.1.5条改为5.5.1.3条下一级条件；

　　——修正了邦际圭臬中的印刷舛错，修正了7.2.3条中c）和d）条列项编号；

　　——修正了邦际圭臬中的印刷舛错，修正了7.9.3条各列项提及的章条编号。

　　请属意本文献的某些实质或者涉及专利。本文献的揭橥机构不接受识别专利的职守。

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　　上海海陆丰船用阀门有限公司、舟山惠生海洋工程有限公司、南通世发船舶呆板有限公司、招商局金陵

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　　司、福修船政交通职业学院、青岛海上归纳试验场有限公司、中阀控股（集团）有限公司、上海盛唐阀门

　　本文献重要草拟人：吴永峰、翁武秀、卢宁波、赵军伟、刘军、王延坡、王巍、李林威、蒋宇峰、金宁、

　　吴炅东、郭健、王宏明、李臣、章文忠、韩龙生、洪晋姚、洪晋福、李运龙、裴耀贵、郝文雅、潘修达、陈声坦、

　　黄文意、李翼、刘学强、郑靓、李兆亮、李美、陈星、陈春健、唐中波、唐洋波、周东光、沈轶麟、范成裕、

　　本文献法则了正在超低温情况下（-196℃~-50℃）具有超低败露量的船用超低温闸阀的计划、制

　　下列文献中的实质通过文中的榜样性援用而组成本文献必不行少的条件。个中，注日期的援用文

　　件，仅该日期对应的版本实用于本文献；不注日期的援用文献，其最新版本（征求全盘的修正单）实用于

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