Gas Turbine Flow Meter is a kind of precise flow measurement instrument that integrates the theory of gas mechanics, fluid mechanics, and electromagnetics to develop a new generation of high-precision, high-precision integrated temperature, pressure, flow sensor and intelligent flow integrator. Reliable gas precision measuring instruments adopt advanced ultra-low-power single-chip microcomputer technology, which has strong functions, low power consumption, superior performance, low pressure loss, impeller with anti-corrosion function, easy maintenance, and self-rectifying structure. Compact and lightweight, the structure is simple, the combination can be disassembled in a short time, and the internal cleaning is simple. Has strong anti-magnetic interference and vibration capability, reliable performance, long life, low minimum flow velocity, wide measurement range, excellent low pressure and high pressure metering performance, a variety of signal output methods and low sensitivity to fluid disturbance, widely used in natural gas, Coal gas, liquefied gas, light hydrocarbon gas and other gas measurement.
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Gas turbine meter maintenance
In order to ensure the long-term normal operation of the gas turbine flowmeter, it is necessary to constantly check the operation status of the flowmeter, make maintenance work, and find problems in time to eliminate.
1. Before the turbine flowmeter is put into operation, it is necessary to set the meter factor, check it carefully, and confirm that the flowmeter is correctly connected and grounded before transmitting power.
2. Regularly clean, check and recalibrate the flowmeter. The flowmeter with lubricant or cleaning fluid injection port should be regularly injected with lubricating oil or cleaning fluid in order to maintain good operation of the impeller.
3, monitor display instrument status, evaluation display instrument readings, abnormalities should be promptly checked.
4, keep the filter open. The filter is blocked by impurities, and can be judged from the increase in the reading of the pressure gauge at the entrance and exit of the filter, and the blockage is eliminated in time. Otherwise, the flow rate will be seriously reduced.
5, for large-flow trade settlement measurement, in order to ensure the accuracy of the flowmeter, the flowmeter must always check. The site should be equipped with on-line calibration equipment, or equipped with a mobile calibration device. Although the one-time investment is large, it is worthwhile considering the long-term economic benefits.
Gas turbine flowmeter troubleshooting
1. The sensor or supporting display instrument has no output signal; the wiring is not stuck to the impeller and the coil is broken or short circuited. The preamplifier is not in good condition. The preamplifier has no power supply or the power supply voltage is too low. The instrument itself is faulty. Check the wiring to check the pipeline. Whether there is a sundries overhaul amplifier to overhaul the amplifier overhaul amplifier or increase power supply voltage requirements, inspection display
Second, the flow rate is still zero signal output; external electromagnetic field interference caused by pipe vibration caused by the impeller swing back and forth pipe vibration caused by the relative movement between the magnet and the coil, check the shielding line is good or eliminate the interference eliminate the pipe vibration eliminate pipe vibration
Third, the indicated flow does not match the actual flow. Cause of the second fault Caused by poor pre-amplifier Air or steam mixed into the outlet of the pipe Pressure is too low Bearing wear Impeller adhesion Impurity of the waste material Display of the instrument Fault, elimination of pipeline vibration Overhaul amplifier Installation of air separator Increased pressure Replacement of the bearing Cleaning piping Re-inspection of piping Inspection display meter 