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Proper installation method of V-cone flowmeter in measuring steam

V-cone flowmeter when measuring steam flow, and conventional flowmeter installation has many different places, because the particularity of the steam, must pay attention to the installation of the problem, otherwise, not only the V-cone flowmeter itself can not work, but also serious will cause the risk of on-site technology. (Once low in 05, there is a customer response that a factory purchased a DN300 V-cone flowmeter in situ measurement, the leak occurred, fortunately did not occur explosion. below to introduce how to ensure accuracy and safety on the basis of the installation of flowmeter:

1. Before installing, must check the Flowmeter packing list, the control factory calculates the book to examine the V Cone Flowmeter's opening and the differential pressure transmitter's range, second is to guarantee the field straight pipe length.
2. Correct use of gaskets, the appropriate specifications of the screw nut, spring pad, symmetrical force gradually tightened to ensure that the measurement of condenser installed in the same height, note that the condenser can not be installed in the V-cone flowmeter measurement system of the lowest point, to prevent the production of measurement errors.
3. Can be horizontal, vertical or tilt installation, should ensure that the tube filled with medium fluid. The guide tube length is preferably within 16M.
4. The place of temperature measuring element is preferably in the downstream side of the throttle part of the lower 10D, in the pipeline or pressure on the pipe, such as pressure transmitter installed in the throttle device, the pressure transducer must be the pipeline liquid column value correction to improve the accuracy of measurement.

As the V-cone flowmeter in the high-temperature, high-pressure water vapor environment, it is easy to cause damage to the table, rust, impurities, such as obstruction, so need regular maintenance and regular overhaul. Check that there is no attachment of dirty material, to regular cleaning.