氢燃料电池—R&D 实验台，原型设计及生产中的 精确流量控制

弗洛德无阀计量泵被选择用于燃料电池及reformer操作中严格的流量控制要求

The unique valveless piston pump has been chosen to perform a critical fluid control functions of the fuel cell and reformer operation including:

研发及原型设计 R&D and Prototyping

对研发及原型设计，QV及RHV变速计量泵提供了非常灵活的流量控制和工程控制方法。通过V300流量控制器，不仅可以调节每冲程流量，而且可以调整泵转速。V300可以方便地通过4-20mA信号接入过程控制系统（传感器，计算机，PLC等）。请告诉我们您的要求
For R&D and prototyping, FMI QV and RHV Variable Speed Pumps provide extreme flexibility of flow range and process control capability. These pumps feature both mechanical stroke volume adjustment and pump speed adjustment via the versatile V300 Stroke Rate Controller. The V300 is easily intgrated into process control devices (sensors, computers, PLC's) via a 4-20mA interface. Send Us Your Application Specs

生产 Production

STH, STQ及SQ系列泵紧凑的空间内集成了弗洛德专利的无阀陶瓷泵以及拥有很长寿命的精确的步进电机。该系列泵适用于燃料电池堆和蒸汽重整器生产，他们通常采用远程或本地安装，而且要求免维护操作。

STH,STQ and SQ Pumps integrate FMI's patented valveless CeramPump® with precision long life stepper motors in a compact design.These pumps are ideal for production fuel cell stacks and steam reformers used for remote and residential installations requiring maintenance-free operation.

氢燃料电池 Hydrogen Fuel Cell Basics

不同于常规电池采用的燃烧燃料产生电力。氢燃料电池通过电化学反应提供电力。该过程效率极高，而且基本无排放。燃料电池同普通电池类似，都是把化学能转化成电能，因为没有可动部件，都要求尽可能少的维护量。然而，不同于普通电池，氢燃料电池不需要充电，因为转换过程一直处于进行状态。燃料电池的阳极和阴极采用聚合薄膜分开电解液（也称质子转换膜PEM）。薄膜间的电势靠持续添加的氢燃料来维持，事实上，PEM膜仅允许氢正离子（质子）从阳极转移到阴极。单向通过薄膜的质子流保证了连续“充电”的过程。该反应的副产品为纯水，它由氧，氢结合而成，它同时也被用来保证PEM膜的湿度。

Unlike most conventional methods of generating electric energy which develop power through combustion, the Hydrogen Fuel Cell generates electric power through an electro-chemical process. The process is extremely efficient and virtually emission free.
Fuel cells are similar to batteries in that they convert chemical energy into electricity. Without any moving parts both require minimum maintenance. However, unlike the battery, the Hydrogen Fuel Cell does not have to be recharged since the regeneration process is ongoing.
The anode and cathode sections of the fuel cell are separated by a Polymer Electrolyte Membrane (also termed a proton exchange membrane or PEM). The electrical potential across the membrane is maintained through the continuous addition of hydrogen rich fuel and the fact that the proton exchange membrane (PEM) allows only hydrogen +ions (protons) to pass from the anode to the cathode side. The result is a one way migration of protons across the membrane creating a continuous "charged" state. A by-product of the reaction is pure water, created by the combining of oxygen and hydrogen (H 2 O) also serves as the source of water used in the humidification of the proton exchange membrane.

水控制及燃料电池性能 Water Management and Fuel Cell Performance
PEM膜通常是不导电的，当PEM膜吸水后，负离子会聚集在膜上。因此，水量控制就成为电池工作效率的关键因素。尽管水是燃料电池反应产物，并在进程中被排出，保证燃料（氢）和空气（氧源）进入燃料电池时的湿度仍然是非常关键的。湿度过低会降低氢离子通过PEM膜的能力，导致电流降低。保证PEM膜的湿度需要精确控制泵入水量，从而保证进入薄膜的燃料和空气的湿度。

Polymer electrolyte membranes are somewhat unusual electrolytes in that, in the presence of water, which the membrane readily absorbs, the negative ions are rigidly held within their structure. Therefore, Water Management is the key to efficient operation of the fuel cell. Although water is a product of the fuel cell reaction and is carried out of the cell during its operation, it is essential that both the fuel (hydrogen source) and air (oxygen source) entering the fuel cell be humidified. Too litle water prevents the membrane from conducting the H + ions well and the cell current drops. Keeping the PEM hydrated requires precision metering of water into the fuel and air entering the cell membrane.

1. 音响行业—铁磁流体计量

2. 氢燃料电池—液体燃料计量

3. 电子封装—玻璃浆液计量

4. 半导体—化学浆液计量

5. 更多应用

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