Glass cup level gauge
Thread Content
The circulating hydrogen desulfurization and dehydration level gauge used to work well, but after it was treated for oil contamination and put back into use, it was found that there was a column of gas at the top of the lower glass plate, while half of the upper glass plate was covered by liquid. Only the levels on both glass plates together represent the actual liquid level. Could anyone tell me what causes the presence of that gas column at the top of the lower glass plate?
There may be slight leaks in the glass plate or the vent valve; please check carefully. It can be checked in a gas-tight manner.
The interior of the level gauge has been contaminated with some substance, resulting in uneven wetting properties of the liquid inside it； If online flushing is not possible or ineffective, the device must be disassembled for cleaning. Steps for flushing the level gauge: Starting from the operating state 1) Open the drain valve to flush the gas-liquid connection pipe and the glass plate (tube). 2) Close the liquid-phase valve and flush only the gas connection pipe and the glass plate (tube). 3) First open the liquid-phase valve and then close the gas-phase valve to flush only the liquid connection pipe. 4) Open the gas-phase valve and close the drain valve to restore normal operation of the level gauge. Precautions: 1. If the water level rises quickly after closing the drain valve, with slight fluctuations up and down, it indicates that the level gauge is functioning properly. If the water level rises very slowly, it indicates a blockage, and flushing should be done again. 2. When timing the flush liquid level, the operation must be carried out slowly, and care must be taken to ensure that one’s face is not directly facing the level gauge. And pay attention to the collection of discharged materials.
The interior of the level gauge has been contaminated with some substance, resulting in uneven wetting properties of the liquid inside it； If online flushing is not possible or ineffective, the device must be disassembled for cleaning. Steps for flushing the level gauge: Starting from the operating state 1) Open the drain valve to flush the gas-liquid connection pipe and the glass plate (tube). 2) Close the liquid-phase valve and flush only the gas connection pipe and the glass plate (tube). 3) First open the liquid-phase valve and then close the gas-phase valve to flush only the liquid connection pipe. 4) Open the gas-phase valve and close the drain valve to restore normal operation of the level gauge. Precautions: 1. If the water level rises quickly after closing the drain valve, with slight fluctuations up and down, it indicates that the level gauge is functioning properly. If the water level rises very slowly, it indicates a blockage, and flushing should be done again. 2. When timing the flush liquid level, the operation must be carried out slowly, and care must be taken to ensure that one’s face is not directly facing the level gauge. And pay attention to the collection of discharged materials.
Take it all apart and wash it again