Installation and use of steam measuring instruments Installation and use of steam measuring instruments by Guangzhou Dichuan Instruments Co., Ltd. Correct installation and use of steam measuring instruments Any steam measuring instrument must be properly installed and properly used, otherwise it is not working properly. status. For example, installing a steam meter near the steam outlet of the boiler; installing the steam meter near the globe valve or pipe elbow and at the lowest point of the piping is an incorrect installation. Correctly installed to do:
(1) A sufficiently long straight pipe section must be left before and after the installed meter.
(2) The steam meter cannot be installed at the lowest point of the entire pipeline.
In addition, the correct use of steam flow meter can not be ignored. For example, diverting rotor-type steam flow meters must be filled with damping water before use, so that meter operation can correctly measure the flow. The use of orifice differential pressure steam flowmeter, the use of the first two pressure tube must be filled with cold water, through the correct pressure of cold water pressure, and high temperature steam from the isolation will not damage the unit instrument.
Use vortex flow sensor to be more cautious, because high temperature and vibration are very unfavorable to the correct use of vortex sensors. In addition to taking the necessary temperature resistance and vibration reduction measures, the square wave signal output by the instrument must be carefully observed in actual operation. If a false signal of interference is found, the operation should be stopped and the reason should be checked and eliminated. Otherwise, the measurement result will be invalid.
In addition to the above, attention should also be paid to the regular overhaul of steam meters. Because of its long-term high-temperature, high-pressure water vapor environment, it is easy to cause damage to parts, corrosion, impurities, etc., so it requires regular maintenance and regular maintenance. For example, in the long-term operation of diverting rotor-type steam flowmeters, the graphite bearings are worn out causing the shaft to jump; the antifreeze is not taken care of, the damping water is frozen, and the parts are frozen. Differential pressure steam flowmeter orifice plate in particular to check the opening of the circular surface is rust, there is no adhesion of dirt, to be cleaned regularly, to replace the serious corrosion of the orifice. Vortex flow sensor should pay attention to check whether there is debris jamming in the triangular column gap and whether the detecting element is malfunctioning.
(1) A sufficiently long straight pipe section must be left before and after the installed meter.
(2) The steam meter cannot be installed at the lowest point of the entire pipeline.
In addition, the correct use of steam flow meter can not be ignored. For example, diverting rotor-type steam flow meters must be filled with damping water before use, so that meter operation can correctly measure the flow. The use of orifice differential pressure steam flowmeter, the use of the first two pressure tube must be filled with cold water, through the correct pressure of cold water pressure, and high temperature steam from the isolation will not damage the unit instrument.
Use vortex flow sensor to be more cautious, because high temperature and vibration are very unfavorable to the correct use of vortex sensors. In addition to taking the necessary temperature resistance and vibration reduction measures, the square wave signal output by the instrument must be carefully observed in actual operation. If a false signal of interference is found, the operation should be stopped and the reason should be checked and eliminated. Otherwise, the measurement result will be invalid.
In addition to the above, attention should also be paid to the regular overhaul of steam meters. Because of its long-term high-temperature, high-pressure water vapor environment, it is easy to cause damage to parts, corrosion, impurities, etc., so it requires regular maintenance and regular maintenance. For example, in the long-term operation of diverting rotor-type steam flowmeters, the graphite bearings are worn out causing the shaft to jump; the antifreeze is not taken care of, the damping water is frozen, and the parts are frozen. Differential pressure steam flowmeter orifice plate in particular to check the opening of the circular surface is rust, there is no adhesion of dirt, to be cleaned regularly, to replace the serious corrosion of the orifice. Vortex flow sensor should pay attention to check whether there is debris jamming in the triangular column gap and whether the detecting element is malfunctioning.
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