Glove box is a closed system used to control and maintain specific environmental conditions, widely used in scientific research and industrial fields, such as lithium battery research and production, physical and chemical research, nuclear technology, biopharmaceuticals, and other industries.
Common problems and solutions of glove boxes:
1. Excessive water oxygen content
Question:
What should be done if the water oxygen content exceeds 200ppm and seriously affects the accuracy of the experiment.
Reason analysis:
It may be due to improper debugging or operational errors by novice glove box operators.
Solution:
Stop the cycle: First, stop the gas circulation in the glove box.
Start cleaning: Start the cleaning program until the water oxygen content drops below 100ppm.
Restart the cycle: After the water oxygen content meets the requirements, restart the gas circulation system.
2. Insufficient pressure or signal failure of the main valve
Problem:
The screen shows insufficient pressure of the main valve or a fault in the main valve signal.
Reason analysis:
Insufficient air source pressure caused the main valve to malfunction.
Solution:
Ensure sufficient air supply and pressure inside the glove box, adjust the air supply pressure to the correct value, and ensure sufficient pressure.
3. Vacuum pump trips
Problem:
The screen displays "Pump Switch Off" and the vacuum pump stops working.
Reason analysis:
The vacuum pump has excessive resistance, which may be due to internal blockage or damage.
Solution:
Repair or replace the vacuum pump, then open the electrical cabinet, turn off the trip switch, and restart the glove box system.
4. The circulatory system cannot start
Problem:
The circulatory system cannot be turned on properly.
Cause analysis:
The unstable voltage caused the protection mechanism of the frequency converter to start.
Solution:
Wait for the voltage to stabilize before restarting the glove box system.
5. Reduction in regeneration gas consumption
Problem:
During the regeneration process, the amount of gas used is less than before
Cause analysis:
The organic solvent content in the glove box is too high, causing the organic solvent in the circulation system to block the one-way valve in the regeneration gas pipeline.
Resolvent:
Replace the one-way valve with a straight through valve or flow meter.
Observe the regenerated gas flow meter to ensure that it displays within the normal range. If it does not meet the requirements, adjust the pressure of the pressure reducing valve.
The correct use and maintenance of glove boxes are crucial for ensuring the accuracy and efficiency of experiments. Understanding common problems and their solutions can help users quickly locate and solve problems, ensuring the smooth progress of experiments and production. Regular inspection and maintenance are also key to ensuring the normal operation of the glove box.
Warm reminder:
Ensure that the glove box has been properly debugged before use.
Regularly check the pressure of the gas source and the working status of the vacuum pump.
Pay attention to the operation of the circulation system and regeneration system, and promptly detect and handle any abnormal situations in the glove box.
When encountering problems, promptly consult the manual or contact professional technical personnel for consultation.
Through this popular science article, we hope to help users better understand and use glove boxes, ensuring the smooth progress of experiments.
