How the hydrogen generator works Common causes and troubleshooting methods of generators 1. The generator cannot start the cause of the fault: (1) the circuit is not turned on; (2) the hydrogen switching power supply is damaged; (3) the electrolytic cell is burnt out when the pressure is 0 no-load operation. Forehead thermometer,baby thermometer,digital thermometer,infrared thermometer Shenzhen urion Technology Co., Ltd. , https://www.urionhealth.com
The hydrogen molecule and the hydrogen atom are the smallest molecules and atoms of all chemical elements. For example, considering the single crystal structure of palladium as a face-centered cube, the eight corners of the cube are occupied by eight palladium atoms, and the central portion of the six faces is six. In the dense accumulation of palladium atoms, only the hydrogen atoms that can dissociate on the surface of the palladium tube can pass, while the atoms and molecules of other elements are larger than the gaps in which the palladium atoms are densely packed, so by. Purification of hydrogen by the palladium diffusion method utilizes this principle to diffuse hydrogen through the palladium tube, which is extremely pure.
How to use the hydrogen generator <br> When starting up, first replace the system with the raw material hydrogen, and vent it from the valve 3. After the high-purity nitrogen in the system is replaced, the hydrogen content in the hydrogen of the user's raw material and the amount of high-purity hydrogen required. Referring to Table 1 data, the operating temperature, the operating pressure, and the purge gas amount are selected, and then the palladium tube is energized to discharge high-purity hydrogen from the valve 2. The temperature adjustment method can be set according to the instructions carried in the random. From the high purity hydrogen produced by the diffusion of palladium to the actually obtained high purity hydrogen, it is necessary to replace the line before the valve 2 for a period of time, usually about 2-3 hours. Since the device is subjected to product quality inspection before leaving the factory, the valves 1 and 3 are filled with high-purity nitrogen, and the line from the valve 2 to the pipeline is filled with high-purity nitrogen. When the equipment is stopped, the power should be cut off first. After the unit is cooled, the valves are closed and then stopped to reduce the time of the replacement system in the next use. The following table lists some of the data on the purified hydrogen amount of the device when we use the synthetic ammonia feed gas and the electrolytic hydrogen as the hydrogen source for the pure hydrogen meter. The user can refer to the data of the purified hydrogen amount of the device. The data in this table to select the appropriate operating conditions. It is generally believed that the pressure difference between the inlet and outlet is greater when the thickness of the palladium tube is constant. The higher the temperature, the greater the penetration of hydrogen, but the average pressure is 8 - 3 kg / cm 2 and the operating temperature is 300 - 400 ° C. should.
The purity, flow rate and pressure of hydrogen have a great influence on the normal operation of the chromatograph, so the failure of the hydrogen generator should be eliminated in time.
Inspection method: (1) Check the circuit; (2) Measure whether the voltage of the electrolytic cell is about 2.3V with a multimeter.
Remedy: (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 exceeds the actual usage. The cause of the failure is: (1) the gas system leaks; (2) the filter or the filter The cover is not tightened; (3) the hydrogen electrolysis cell is leaking back.
Inspection method: Check the connection of each gas path with the leak detection fluid.
Remedy: (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) Turn off the power when the pressure on the front panel reaches 0.3MPa, 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 be started 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 and there is gas leakage.
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. The cause of the 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 the start-up, the hydrogen production rate slowly increases from tens of ml/min, and the pressure cannot reach 0. 3 MPa in 5 arin 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 corroded and cannot be used. Causes: (1) The electrolyte is not sucked up by the suction ear during handling; (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.