液化天然气
专为液化天然气加工和运输而设计的低温阀门。FLOWKS 低温阀门按照 BS 6364 标准进行测试,可在 -196°C 的温度下运行。
Recommended Solutions
锻造固定球阀
Anchored ball design with spring-loaded seats for reliable sealing in high-pressure service. Side-entry and forged body options available.
顶装式球阀
Inline maintainable design allowing seat and seal replacement without removing the valve from the pipeline. Ideal for buried and welded pipelines.
金属密封三偏心蝶阀
Metal-to-metal seal with zero friction, ideal for high-temperature and cryogenic service.
固定球双阻断与排放DBB
All-welded body DBB valve with extended bonnet for buried pipeline service. Zero external leakage design per ISO 15848.
Applications in 液化天然气
液化列车
液化天然气(LNG)液化装置采用混合制冷剂循环(C3MR、AP-X)将天然气压缩冷却至-162℃。低温球阀用于隔离液化换热器和LNG储罐进料管线。加长阀盖设计使阀杆填料温度保持在0℃以上,防止结霜和填料失效。奥氏体不锈钢(304L/316L)可防止低温脆性断裂。
LNG储存和装载
液化天然气(LNG)储罐采用低温阀门进行灌装、抽取和蒸发气体管理。船舶装卸臂通过低温双相双相隔离阀(DBB)将LNG运输船连接到终端管道。顶部入口设计允许在不将阀门从低温环境中拆卸的情况下进行在线维护,这对于终端的连续运行至关重要。
再气化终端
液化天然气进口终端使用海水汽化器、浸没式燃烧汽化器或环境空气汽化器对液化天然气进行再气化。低温蝶阀控制流向汽化器的海水流量。汽化后,天然气通过减压站进入分配管道,减压站使用球形控制阀控制天然气的流动。
液化天然气运输船
液化天然气运输船使用配备低温阀门的货物装卸系统进行装卸和储罐管理。全焊接双相双相阀(DBB阀)可消除海洋环境中阀体接头处的泄漏。阀门必须能够承受船舶运动、振动以及常温和低温条件之间的热循环。必须符合IGC规范。
Industry Standards
[BS 6364] 低温应用阀门
低温阀门的设计和测试
[API 6D] 管道和管道阀门
管道阀门规格
[IGC Code] 国际气体运输船规则
海上液化天然气运输船安全
[EN 1626]低温阀门——工业阀门
欧洲低温阀门标准
[MSS-SP-134] 低温应用阀门
美国低温阀门规范
Materials Available
- ●316L
- ●304L
- ●Aluminum Bronze
- ●Inconel 600
- ●Inconel 718
- ●9% Nickel Steel
Frequently Asked Questions
低温阀门是如何测试的?+
为什么低温环境需要使用奥氏体不锈钢?+
什么是蒸发气体(BOG)?阀门如何处理蒸发气体?+
What is boil-off gas (BOG) and how do valves handle it?+
Related Articles
Technical insights and case studies related to 液化天然气 applications.
Cavitation and Noise in Control Valves
Control valves operating at high pressure drops face two destructive forces: cavitation and fluid-dynamic noise. Both stem from the same physics — pressure falling below the fluid's vapor pressure at the vena contracta — but they manifest differently and require distinct mitigation strategies. Corre
⏱ 5 min readASME B16.34-2025 Valve Rating Changes Explained
A breakdown of the ASME B16.34-2025 revision and its impact on valve specification, procurement, and compliance. **Tags:** ASME B16.34, valve pressure-temperature ratings, valve procurement, material groups, NDE requirements
⏱ 5 min readAPI 6D, pipeline valves, DIB-1, DIB-2, valve procurement, PHMSA compliance, ball valve, gate valve, check valve
The 25th Edition of API 6D introduces revised DIB-1 and DIB-2 definitions, extended hydrostatic test durations, enhanced traceability marking, and updated actuator interface requirements. With PHMSA incorporating the edition by reference into US pipeline regulations, procurement teams must update sp
⏱ 5 min read