低温卸车臂与卸车增压器Cryogenic unloading arm and booster
LNG/液氮槽车卸液的成套接口设备：卸车臂、增压器、低温软管与氮气吹扫。Complete unloading interface: arm, booster, cryogenic hose and purge.
产品概述Product overview
卸车是整站里最容易出问题的环节，因为它由人操作。卸车臂的价值在于把“人对着低温法兰拧螺栓”变成“把臂拉过来对接”：旋转接头提供多自由度，对接后靠密封圈与卡箍锁紧，拆装时氮气吹扫防结霜。卸车增压器则负责把槽车压力顶到能出液的水平，常见为为空温式或水浴式。Unloading is the most operator-dependent step; a swivel-joint arm replaces hand-bolting cryogenic flanges, with nitrogen purge on connect and disconnect.
低温软管是耗材也是薄弱点，外层不锈钢编织、内层波纹管，按规定周期做气密与外观检查，超期或鼓包必须更换，不能靠“还能用”继续撑。Cryogenic hose is a wear item: braided stainless over corrugated core, replaced on schedule or on bulging.
结构组成What is on the skid
核心优势Why this design
- 省人力：一人可完成对接，减少低温暴露时间。One-person connection, less cold exposure.
- 密封可靠：专用低温接头 + 吹扫，减少结霜卡死。Cryogenic couplings with purge.
- 成套供应：臂、增压器、软管同批交付，接口一致。Arm, booster and hose delivered as a set.
- 维护简单：密封件与软管按周期更换。Scheduled seal and hose replacement.
技术参数Technical data
| 适用介质Medium | LNG / LN₂ / LO₂ / LArLNG / LN₂ / LO₂ / LAr |
|---|---|
| 介质温度Temperature | 最低 −196 ℃down to −196 °C |
| 公称口径Size | DN25–DN80（按槽车接口）DN25–DN80 |
| 连接形式Connection | 低温快速接头 / 法兰Cryogenic coupling or flange |
| 增压器形式Booster | 空温式 / 水浴式Ambient / water bath |
| 配套Accessories | 氮气吹扫、静电接地、拉断保护Purge, earthing, breakaway |
表中为该系列典型配置。项目流量、介质与进出口压力不同时按工况单独设计，参数以合同技术文件为准。Typical configuration; units are engineered per duty and the contract data sheet governs.
适用工况Typical duties
同类设备Related equipment
把你的工况发过来，我们出选型表Send your duty, we return a selection sheet
需要提供：介质、最大/最小流量、进口压力、出口压力、现场热源（电/热水/蒸汽）、安装场地条件。We need medium, min/max flow, inlet and outlet pressure, available heat source and site conditions.