水浴式气化器Water-bath vaporizer
用热水浴把低温液体加热气化，出力不随气温波动，是北方冬季与高负荷场合的补热主力。Water bath delivers stable output regardless of ambient — the winter trim heater.
产品概述Product overview
水浴式的价值就一条：它不看天气。空温式在 −20℃ 时掉到六成出力，水浴式仍是额定。北方 LNG 站、连续生产的工业用户、以及要求出口温度恒定的场合，水浴式不是备选而是必需。热源三选一：电加热（无锅炉的站点）、蒸汽（有蒸汽源的工厂）、热水（锅炉或余热），换热结构为壳管式或盘管浸没式。A water bath holds rating regardless of weather; heat can be electric, steam or hot water.
设计要点在温控与防冻：出口温度设闭环调节，水温低限联锁停泵，避免低温液体进壳程造成冻结；水箱做保温与补水，户外安装另加防冻排空。Closed-loop outlet temperature control with low-limit interlock and drain-down for outdoor installation.
工作原理：热水浴里的稳定出力Working principle: steady duty inside a hot water bath
水浴式气化器的换热管浸在热水里，热水由电加热、蒸汽盘管或燃气热水炉提供。低温液体在管内吸热气化，管外用热水包围，换热系数远高于空气，因此同样体积的出力大得多，而且不随气温波动。The vaporiser's tubes sit in a hot water bath heated by electric elements, a steam coil or a gas-fired water heater. Cryogenic liquid vaporises inside the tubes while water surrounds them; the heat-transfer coefficient is far above that of air, so output per unit volume is much higher and does not follow ambient temperature.
水温控制是运行的核心：水温太低出力不足，太高则能耗上升、结垢加快、甚至让水温接近沸点产生大量蒸汽。通常按厂家推荐区间运行，并配温度控制与低液位保护——水位不足会让加热元件干烧。Water temperature is the operating core: too low and duty falls short, too high and energy, scaling and steam losses climb. Run within the maker's band, with temperature control and low-level protection — a low level exposes the elements to dry firing.
与空温式组合是常见方案：平时空温运行省电，冬季或高负荷时水浴补热。这套组合在北方项目里几乎是标配，投资与运行成本都比单一放大设备合理。Pairing with ambient units is common: ambient runs in the mild season at near-zero running cost, and the water bath trims in winter or at high load. In northern projects this combination is close to standard, and cheaper in both capital and running cost than a single oversized unit.
结构组成What is on the skid
核心优势Why this design
- 出力稳定：不受环境温度影响，冬季不降容。Stable output in winter.
- 三种热源可选：按现场能源条件定，不强制配电。Three heat sources to suit site energy.
- 与空温式串接：平时空温、峰时水浴，能耗最优。Series with ambient for lowest energy.
- 温控闭环：出口温度可设定并保持。Closed-loop temperature control.
四件做到位，设备才站得稳Four things done right
翅片管束按气化量与当地冬季工况核算，低温段材料按 -196℃ 选。
翅片、撬架、管路与调压计量段厂内组对试压，现场只接进出口与电源。
超压切断与放散、出口温度低限报警、自动运行，异常先切后报。
每台带检验试验状态标识、检验记录与检验报告，跟设备一起交到现场。
产品实拍Product photos
水浴式汽化器 · 筒体与水浴换热Water-bath vaporiser — shell and bath 点击图片放大查看。 Click to enlarge.
技术参数Technical data
| 热源Heat source | 电加热 / 蒸汽 / 热水Electric / steam / hot water |
|---|---|
| 换热形式Exchange | 壳管式 / 盘管浸没式Shell-tube or immersed coil |
| 出口温度Outlet temp. | 按工况设定，闭环控制Set point, closed loop |
| 适用介质Medium | LNG / LO₂ / LN₂ / LAr / CO₂LNG / LO₂ / LN₂ / LAr / CO₂ |
| 控制Control | 温度联锁、低液位停机Temperature interlock, low-level cut-off |
| 安装Mounting | 室内或户外保温型Indoor or insulated outdoor |
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.
选型与计算要点Selection points
适用工况Typical duties
适合什么工况，什么情况不适用Where it fits, and where it does not
这套设备适合Best for
- 出力稳定，不受气温影响Stable output regardless of ambient temperature
- 可配套电、蒸汽或热水多种热源Electric, steam or hot-water heat sources
- 适合北方冬季与高负荷连续供气Suits northern winters and continuous high load
- 出口温度可控，避免低温脆断Controlled outlet temperature avoids cold embrittlement
需要提前确认的边界Check before ordering
- 需要热源与运行成本，电加热功率较大Needs a heat source; electric heating draws significant power
- 筒体与盘管需定期除垢、检查Shell and coil need descaling and inspection
- 启动升温有时间，不适合瞬时启停Warm-up takes time; not ideal for instant cycling
标准配置Standard configuration
以上为常规配置，实际随机组按工况与用户管网条件确定，可按需增减。Standard scope shown; final scope is set by duty and network conditions, and can be adjusted.
主要零部件Main components
零部件的品牌与型号按项目技术要求与用户指定品牌确定，页内不限定具体厂家。Brand and model are fixed by project specification and the user's approved vendor list.
常见问题FAQ
水浴式比空温式费电吗？Does a water bath cost more to run?
单位热量上是的，但只在需要补热的时段运行，全年算下来往往比“空温放大到最冷天”更省。关键在运行策略。Per unit of heat, yes — but it only runs when trim is needed, so annual cost is often below oversizing the ambient bank for the coldest day. Operating strategy decides.
水温上不去怎么办？Why won't the water heat up?
查加热功率是否足够、是否有结垢、循环是否正常、低液位保护是否误动作。冬季进水温度低时启动时间也会变长。Check heater capacity, scaling, circulation, and whether low-level protection is tripping. Cold make-up water also lengthens start-up in winter.
可以干烧吗？Can it run dry?
绝对不可以。低液位保护必须可靠并定期试验；干烧会瞬间损坏加热元件，甚至引发事故。Never. Low-level protection must be reliable and periodically tested; dry firing destroys elements instantly and can be dangerous.
停用一段时间要注意什么？What if it stands idle?
排空或保持循环与伴热，防止冻结；重新投用前检查水质、水位与元件绝缘。Drain, or keep circulation and tracing on to prevent freezing; before restart check water quality, level and element insulation.
出口温度波动大是什么原因？Why does outlet temperature swing?
多为水温控制不稳或流量波动大。先看水浴温度曲线，再看下游用气是否间歇性大幅变化。Usually unstable bath temperature or swinging flow. Look at the bath temperature trend, then at whether downstream demand is intermittent.
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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.