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Lunan
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technical article
How to install V-cone flowmeter when measuring steam
2011-5-30 10:09:07

Dongxiang Instrument Enterprise summarized the installation precautions of V-cone flowmeter during the installation process, in order to allow customers to install and use our products more reasonably.

The V-cone flowmeter has many differences from conventional flowmeters when measuring steam flow. Due to the special nature of steam, attention must be paid to installation problems. Otherwise, not only the V-cone flowmeter itself cannot work properly, but also serious. It can also cause dangers of on-site processes. (When it was low in 2005, some customers reported that a DN300 V-cone flowmeter purchased by a certain manufacturer leaked when it was measured on the spot. Fortunately, there was no explosion.) Let me introduce you to the following Install the flow meter on the basis of ensuring accuracy and safety:

1. It is best to place the temperature measuring element outside 10D on the downstream side of the throttle. When taking pressure on the pipeline or positive pressure pipe, if the pressure transmitter is installed under the throttle device, the pipe of the pressure transmitter must be The liquid column value of the road is corrected to improve the measurement accuracy.

2. Proper use of gaskets, suitable specifications of screw nuts, spring pads, and symmetrical tightening force to ensure that the measurement condenser is installed at the same height. Note that the condenser cannot be installed at the lowest level of the V-cone flowmeter measurement system. Point to prevent measurement errors.

3. It can be installed horizontally, vertically or obliquely. The tube should be filled with medium fluid. The length of the pressure guiding tube is preferably within 16M.

4. Before installation, check the packing list of the flowmeter, check the opening of the V-cone flowmeter and the range of the differential pressure transmitter against the manufacturer's calculation book, and then ensure the length of the straight pipe section on site.

Because the V-cone flowmeter is in a high-temperature, high-pressure water vapor environment for a long time, it is easy to cause damage to the meter parts, rust, and blockage of impurities, so it needs frequent maintenance and regular inspection. Check that there is no dirt attached, and clean it regularly.