Brief Plan for the Expansion and Reconstruction of the HM Series Hydrogen Generator
The HM series hydrogen generator is a well-established piece of equipment that utilizes water electrolysis technology to produce hydrogen. Developed by American company Teledyne, it has been in the Chinese industrial market for over two decades. The series includes models such as HM-50, HM-100, HM-125, HM-150, and HM-200, each with different hydrogen production capacities ranging from 3 to 11 Nm³/h. Due to evolving business needs, some companies may initially select smaller models that no longer meet their requirements. In such cases, expansion or reconstruction becomes necessary.
One of the most cost-effective ways to upgrade an HM series hydrogen generator is to increase its output capacity. This approach is particularly suitable for businesses that initially chose a smaller model but now require a larger hydrogen supply. For instance, if a company originally opted for an HM-200 unit but finds it insufficient, upgrading the system can be a simple and efficient solution. Whether the initial selection was HM-50 or HM-100, the mechanical and electrical framework of the HM series allows for increased hydrogen production with minimal investment.
All five models of the HM series share the same body frame and operating principle. The only difference lies in the type of electrolytic cell used and the specific working parameters of the system. Below, we will explore how to adjust these parameters during the expansion process.
**Differences in Operating Parameters**
| Model | Hydrogen Production (Nm³/h) | Oxygen Production (Nm³/h) | Pure Water Consumption (L/h) | 25% Alkali Volume (L) | Working Voltage (V) | Working Current (A) |
|-----------|-----------------------------|---------------------------|------------------------------|------------------------|---------------------|---------------------|
| HM-50 | 3 | 1.5 | 3 | 16 | 60-80 | 280 |
| HM-100 | 6 | 3 | 6 | 19 | 110-130 | 280 |
| HM-125 | 7 | 3.5 | 7 | 20 | 120-150 | 280 |
| HM-150 | 8 | 4 | 8 | 22 | 150-175 | 280 |
| HM-200 | 11 | 5.5 | 11 | 25 | 220-250 | 280 |
Other operating parameters like flow rate, pressure, and pure water conductivity remain consistent across all models. Therefore, expanding the system involves adjusting the above variables.
**Solving Hydrogen and Oxygen Output Differences**
The core component of the HM series is the electrolytic cell. By replacing the cell with a larger one, the hydrogen output increases accordingly. Each model uses a different number of electrolytic chambers—ranging from 29 in HM-50 to 110 in HM-200. Despite this variation, the installation space within the hydrogen generator body remains sufficient for all sizes.
**Addressing Pure Water Consumption**
The make-up pump controls the pure water consumption. While the pump’s power and water supply system are the same across models, the frequency of operation changes based on hydrogen output. However, the single water supply amount remains constant, so no modifications to the water supply system are required during expansion.
**Adjusting Alkali Volume**
Potassium hydroxide is essential for the electrolysis process and is not consumed during normal operation. However, the volume of alkali needed increases with the size of the electrolytic cell. This means more alkali must be added before starting the generator, but other components of the lye circulation system remain unchanged.
**Managing Working Voltage and Current**
Hydrogen production is closely tied to the working current, which remains the same across models. However, the working voltage varies due to differences in the electrolytic cell resistance. To maintain a constant current, the voltage must be adjusted. This typically involves modifying the rectifier transformer's secondary output voltage and matching it with the control board and trigger board.
In some systems, PLC programs may limit the voltage output. During expansion, it's important to check these settings and adjust them if necessary. If the existing rectifier transformer cannot support the increased load, a higher-capacity transformer must be installed to avoid overheating and potential damage.
In summary, expanding the HM series hydrogen generator requires careful adjustments to the electrolytic cell, voltage, and alkali volume. These changes do not affect other operational parameters, including safety alarms. With minimal investment, companies can significantly boost their hydrogen output to meet growing demands. This makes it an ideal solution during economic downturns.
Our company has successfully completed several expansion projects for power plants. We have extensive experience and are happy to discuss your specific needs. Feel free to contact us for more information.Grid Scale Energy Storage
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