Failure analysis of hydrogen generator

1. The generator cannot be started

cause of issue:

(1) The circuit is not turned on;

(2) The hydrogen switching power supply is damaged;

(3) The electrolytic cell burns out when the pressure is 0 no-load operation.

Inspection Method:

(1) checking the circuit;

(2) Use a multimeter to measure whether the voltage of the electrolytic cell is about 2.3V.

Method of exclusion:

(1) repair the power supply;

(2) Replace the damaged hydrogen switching power supply;

(3) Replace the electrolytic cell.

2. The hydrogen production is less than the predetermined pressure, and the hydrogen number is displayed above 500ml/min, that is, the instrument display amount is larger than the actual usage.

cause of issue:

(1) Air leakage from the pneumatic system;

(2) The filter or filter cover is not tightened;

(3) Hydrogen electrolytic cell back leak.

Inspection method: Check the connection of each gas path with the leak detection fluid.

Method of exclusion:

(1) Replace the gas leakage component;

(2) tighten the leak point;

(3) Contact the manufacturer to replace the electrolytic cell.

3. Hydrogen production exceeds the predetermined pressure of 0.1MPa

The cause of the failure: (1) The optical tracking device of the automatic tracking device is misaligned or dropped; (2) The photoelectric coupling is damaged.

Inspection methods: (1) visual inspection; (2) measurement circuit with a multimeter.

Remedy: (1) When the pressure on the front panel reaches 0.3MPa

Turn off the power, install the light barrier in a reasonable position, turn on the power switch and gently tap the light barrier; (2) Replace the damaged optocoupler.

4. The generator can start but the digital display of hydrogen is 0 or black.

Cause of failure: The digital display is damaged.

Inspection method: measure the circuit with a multimeter.

Remedy: Replace the digital display.

5. After starting the machine, the hydrogen production amount is less than 300ml/min or it takes a long time to reach

The cause of the failure: (1) electrolyte failure; (2) the switch is not tightened, there is a gas leakage phenomenon.

Inspection method: (1) Observe whether the liquid level of the electrolyte is lower than the lower limit or the electrolyte is used for more than half a year; (2) Test leak.

Remedy: (1) Add double distilled water or deionized water in time. Or the newly configured cooled electrolyte (mother liquor) is poured into the liquid storage tank, and then the secondary distilled water or deionized water is added, and the water level is between the lower limit of the water level line (the concentration of the potassium hydroxide solution is about 10%). Screw on the cover and use it after 10 minutes; (2) Continue to tighten the switch to make the pressure and flow of the instrument reach the standard.

6. After the start-up, the hydrogen production cannot be stabilized and has been fluctuating within a small range.

Cause of failure: electrolyte failure.

Inspection method: Observe whether the liquid level of the electrolyte is lower than the lower limit or the electrolyte is used for more than half a year.

Remedy: Newly configure 10% potassium hydroxide electrolyte to replace or add water.

7. After starting the machine, the hydrogen production rate increases slowly from tens of ml/min, and the pressure cannot reach 0. 3MPa within 5arin time.

The cause of the malfunction: the electrolytic cell leaks.

Inspection method: visual inspection.

Remedy: (1) The electrolytic cell is clamped with a vise and tightened; (2) The seal is fixed with a flat sealant; (3) The mechanical damage cannot be repaired, and the electrolytic cell should be replaced.

8. The instrument is seriously unstable and cannot be used.

The cause of the failure: (1) The electrolyte is not sucked by the suction ear during transportation; (2) The inner cover and the outer cover are not screwed, so that the residual electrolyte overflows during transportation.

Inspection method: visual inspection.

Remedy: Replace the instrument.