Correct operation method of flowmeter

The easiest way to deal with the accumulation of water in front of the saving part is to open a liquid-repellent hole in the lower part of the saving part. But air pipes are not cleaned like steam pipes. In the steam pipe, because the water vapor is in contact with the inner wall of the pipe, and the water vapor usually passes through the deoxygenation process during the generation process, so the steam does not contain oxygen at all. After long-term use, the inner wall of the steam pipe can only accumulate a small amount of oxygen. Gray powder, otherwise there will be no rust. The air duct is completely different, dust and iron oxide are unavoidable, and sometimes the liquid-repelling holes are blocked. The saving equipment was removed during parking maintenance, and it was found that there were signs of water accumulation on the positive end plane of the saving parts, which was the basis. The way to completely eliminate the accumulation of water in front of the economizer is to install the economizer on a straight technical tube, or to use a round orifice plate or an eccentric orifice plate. Among them, the uncertainty of the eccentric orifice plate is smaller, which is better than that of the circular orifice plate. The problem of water accumulation in the high and low pressure chamber of the differential pressure transmitter. Figure 3.15 (0) is a typical signal pipeline installation diagram of the energy-saving differential pressure flowmeter. When the measured fluid is wet gas, the condensate should not enter the high and low pressure chamber of the differential pressure transmitter, but from the site 5 According to the collapse information, the actual situation is that sometimes a small amount of water droplets enter the high and low pressure chambers. When the differential pressure range of the transmitter is low, this amount of water droplets will cause the apparent drift of the zero point of the surface. Some differential pressure transmitter designs There are two discharge ports, and the condensate can be discharged smoothly by opening the lower discharge port. However, the early transmitter only has one discharge port in the middle, and the condensate in the high and low pressure chamber cannot be drained by opening this port. Remove the transmitter and pour out the condensate from the signal input port. The appearance of liquid accumulation in the high and low pressure chamber, after further analysis, should be that a section of pipeline above the transmitter condenses the water vapor in the signal tube due to the change of ambient temperature And flow down into the high and low pressure chamber along the signal pipe. The easiest way to prevent condensate from flowing into the high and low pressure chamber is to eliminate a section of signal pipeline above the transmitter, and lead the signal pipeline into the transmitter from below. As shown in Figure ^.''), in this way, even if there is a small amount of condensate in the high and low pressure chamber, it can automatically flow back to the main pipe or settler along the pipeline relying on its own gravity. Practice has proved that this approach is useful.

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