What flow meters are available to measure the two-way flow of heavy oil in DN150 pipes? Just indicate on the spot
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What flow meters are available to measure the two-way flow of heavy oil in DN150 pipes? Just give instructions on the spot. I found many flow meter samples, but it seems none of them can measure flow in both directions.
There aren’t many field meters that meet such conditions; I’ve never heard of a field meter having this kind of function. Looking forward to experts’ answers!
Let’s modify the process. Isn’t it claimed to have a flexible design for the tank area, with one pump serving multiple tanks, allowing for both unloading and loading? It causes a lot of trouble for the automation control major. If testing is really necessary, two-way orifice plates, wedge-type meters, and AK balanced flowmeters can be used; however, I have not used these types of meters for heavy oil – usually, volumetric or mass flowmeters are employed in such cases. Other electromagnetic, ultrasonic, or turbine methods that can measure in both directions seem unsuitable for your application conditions.
As mentioned on the 4th floor, one pump for both installation and removal. Originally, the pipeline was supposed to be modified using a specific process, but he said that this would make the pipeline look unsightly and increase the complexity of operation. For now, I plan to initially choose an ultrasonic flow meter; mass flow meters are too expensive. However, ultrasonic flowmeters require a very long straight pipe section.
Ultrasonic flowmeters should be fine, but they require straight pipes.
This post was last edited by hwindforce on 2009-12-4 09:14. When there is little contamination, wedge or balanced flow meters can be considered; they are more suitable for applications with high viscosity, as ultrasonic methods simply lack the necessary precision. But since you just need on-site instructions, it seems there are no particular requirements in this regard; the final settlement will likely be based on the weight scale readings. Or I might give you a bad idea: add a bypass with the same diameter of DN150 and install two twin-rotor units, one on the main line in the forward direction and one on the bypass in the reverse direction. Close the bypass when unloading, and close the main line when loading. Hehe
By using a balanced flow meter, with two sets of pressure tapping holes and two transmitters, it is possible to detect bidirectional flow; we have applied this approach in one of the units at Zhongyuan Ethylene
The flow meters mentioned upstairs, including those with two-way orifice plates, are not true two-way flow meters, as both require two transmitters for switching operations. Regarding the poster’s question, I think that if differential pressure is used, a elbow flow meter can measure two-way flow, and only one differential pressure transmitter is required. Or you can use a turbine as well; there’s no need to switch.
GE’s ultrasound can measure in both directions, but it’s quite expensive. Hehe. And it’s long-distance transmission.