Dynamic weighing system of high-viscosity fluid and method thereof

Abstract

The invention relates to a dynamic weighing system of a high-viscosity fluid and a method thereof. The scale body output end of the system is simultaneously connected with a weight display instrument and a weighing controller. An output control end of the weighing controller is connected with a high-viscosity fluid barrel pump through a frequency converter; and the high-viscosity fluid is pumped into a scale body by the high-viscosity fluid barrel pump through a pump rod inserted into a high-viscosity fluid barrel. By using the method, the high-viscosity fluid is pumped into the scale body by the high-viscosity fluid barrel pump, the scale body feeds a weighing signal back to the weighing controller, and the weighing controller controls the pump speed of the high-viscosity fluid barrel pump through the frequency converter by adopting a dynamic difference compensation method and a method for measuring minimum flow according to control parameters. The invention has reasonable design, achieves the dynamic accurate weighing function on the high-viscosity fluid, ensures the weighing precision and the weighing speed, meets the requirement on the dynamic accurate weighing of the high-viscosity fluid, and also has the characteristics of convenient use and wide application range.

Description

technical field [0001] The invention belongs to the field of fluid measurement, in particular to a dynamic weighing system and method for high-viscosity fluid. Background technique [0002] In the process of industrial production, dynamic weighing of fluid raw materials is often required. Low-viscosity fluids can be accurately and dynamically metered using flowmeters or gear pumps, but fluids with a viscosity as high as 10,000 cps cannot be accurately and dynamically metered using flowmeters or gear pumps. Although the two-speed valve can be used to dynamically measure the high-viscosity fluid, there are problems such as low weighing accuracy and serious hysteresis when using the two-speed valve to weigh the high-viscosity fluid. Therefore, the prior art cannot carry out accurate dynamic weighing for high-viscosity fluids. Contents of the invention [0003] The object of the present invention is to overcome the deficiencies of the prior art, and provide a dynamic weighin...

AI Technical Summary

Problems solved by technology

Low-viscosity fluids can be accurately and dynamically metered using flowmeters or gear pumps, but fluids with a viscosity as high as 10,000 cps cannot be accurately and dynamically metered using flowmeters or gear pumps

Although the use of two-speed valves can dynamically measure high-viscosity fluids, there are problems such as low weighing accuracy and serious hysteresis when using two-speed valves for weighing high-viscosity fluids.

Therefore, the prior art cannot carry out accurate dynamic weighing for highly viscous fluids

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