Brief introduction to the expansion and transformation of HM series imported hydrogen generators

HM series hydrogen generator is a mature equipment for water electrolysis hydrogen production technology. It is developed by American TELEDYNE company and entered the Chinese industrial market for more than 20 years. It has HM-50, HM-100, HM-125, HM-150 and Five types of HM-200 models have different hydrogen production capacities, which are 3, 6, 7, 8, and 11 Nm3/h. Since hydrogen generators entered the Chinese market earlier, with the changes in the size of their respective companies, the initial selection may not meet the production needs of enterprises, and expansion and transformation are needed.

It is a simple and economical way to transform the HM series hydrogen production machine from small output to large output. This method is suitable for enterprises with small initial selection and large amount of hydrogen. If the HM-200 hydrogen production machine is used. The amount of hydrogen produced is within the range, so expansion and transformation is a simple and convenient choice. Regardless of whether the initial selection is 50 or 100, the mechanical and electrical framework of the HM series hydrogen generator can achieve a large hydrogen production with minimal input.

Since the five models of the body frame of the HM series hydrogen generator are the same, the working principle is the same. The only difference is the replacement of the electrolytic cell model. The other difference lies in the adjustment of the specific working parameters of the hydrogen generator. Below we start with the differences between the operating parameters of different types of hydrogen generators, and describe the transformation one by one.

one,

Differences in operating parameters of various models of HM series hydrogen generator

HM-50 HM-100 HM-125 HM-150 HM-200

Hydrogen production (Nm3/h): 3 6 7 8 11

Oxygen production (Nm3/h): 1.5 3 3.5 4 5.5

Pure water consumption (L/h): 3 6 7 8 11

25% alkali volume (L): 16 19 20 22 25

Working voltage (V): 60-80 110-130 120-150 150-175 220-250

Working current (A): 280 280 280 280 280

Cell length (mm):

The above are the differences in the operating parameters of the HM series hydrogen generator. As for other operating parameters, such as flow, pressure, and pure water conductivity, they are all the same, so we can achieve the expansion by changing the above differences one by one. the goal of.

Second, to solve the difference between hydrogen production and oxygen production

The HM series hydrogen generator is a water electrolysis hydrogen generator. The basic component of the gas generation is also the core component or the electrolytic cell. Changing the size of the electrolytic cell also achieves the basic conditions for expansion, and it is also the most obvious change in the expansion and transformation. The number of electrolytic chambers of the five types of electrolytic cells is different. The number of electrolytic chambers of the 50 to 200 type electrolytic cells is 29, 56, 71, 84, and 110, respectively, so the respective hydrogen production amounts also change. Of course, the installation size of the electrolytic cell has changed with the number of electrolytic cells constituting the electrolytic cell, but there is no need to worry, because the track length of the electrolysis cell installed in the TELEDYNE hydrogen generator body is 700 mm, which is sufficient for various models. Installation of the electrolytic cell.

Third, to solve the difference in the consumption of pure water

The consumption of pure water in the HM series hydrogen generator is completed by the make-up pump. The output of the hydrogen generator is different, but the power and the water supply system of the make-up pump are the same. The difference lies in the frequency of the water supply of the make-up pump during the operation of the hydrogen generator. There has been a change. The working frequency of the hydrogen generator water pump with a large amount of hydrogen production has increased. The working time of each make-up pump is also 30 seconds, that is, the single water supply amount is unchanged, so the expansion does not need to change any of the water supply systems. The setting of water supply on the device and program.

Fourth, to solve the difference in the amount of lye

Potassium hydroxide is a medium for promoting electrolysis of water in electrolyzers. There is no consumption and loss during the operation of the hydrogen generator (under the premise that the pipeline is not leaking), but the volume of the electrolyzer has changed due to expansion, and alkali is used. The amount has also changed, but the other equipment of the lye circulation system does not change, and the lye flow rate does not change, so it is only necessary to increase the amount of lye before the start of the hydrogen generator.

V. Solve the difference between working voltage and current of hydrogen generator

The hydrogen production of HM series hydrogen generators is closely related to the working current, while the operating currents of different types of hydrogen generators are the same, but their normal working voltages are different, that is, to achieve the expansion. The amount of hydrogen produced must keep the working current of the electrolytic cell unchanged, so how to keep the working current of the electrolytic cell is a problem. Since the volume of the electrolytic cell changes, the resistance value of the electrolytic cell itself is changed. According to the electrician's law I=U/R, if the current is kept constant, the voltage value of the electrolytic cell is changed. How to change the working voltage of the electrolytic cell? This is the key point for the expansion and reconstruction of the HM hydrogen generator. According to the different rectifier cabinets configured by the HM hydrogen generator, the modification method is different, but the most basic principle is to change the voltage value and change the secondary output voltage of the rectifier transformer. The value starts, and the corresponding control board and trigger board are matched, so that the voltage value required for the modified electrolytic cell is obtained through the thyristor rectifier circuit to ensure the working current of the electrolytic cell is unchanged, and the purpose of changing the hydrogen production amount is realized.

In some PLC production procedures of the hydrogen generator, the output voltage signal of the control panel of the electrolytic cell is limitedly controlled. Therefore, when the expansion and transformation is carried out, the PLC program should be read and observed. If the control is found, the control amount is released. There is no need to change the parameters without control.

In changing the secondary output voltage value of the rectifier transformer, it is necessary to change the wiring of the rectifier transformer, provided that the overall capacity of the rectifier transformer is sufficient to meet the needs of capacity expansion, and if it cannot be satisfied, the large-capacity transformer must be replaced, and the small-sized horse-drawn carriage cannot be used. It is easy to cause transformer overload, long-term high temperature operation and other accidents.

The above are the basic components to be changed in the expansion and reconstruction of the HM series hydrogen production machine. The specific expansion and transformation should be carried out in conjunction with the actual situation of the hydrogen production machine, but the key points can be achieved. The expansion of the hydrogen generator has not changed other operating parameters, including various safety alarm parameters of the hydrogen generator. It can be seen from the above method that the hydrogen production machine can increase the output and meet the production needs without much investment. In the current economic downturn, it is the best choice.

Our company has successfully expanded and transformed the hydrogen production machine of a power plant. It has sufficient practical experience and can be mutually verified and discussed. Welcome to inquire.