Prepositioned flow adjuster of ultrasonic flow meter

Abstract

The invention discloses a prepositioned flow adjuster of an ultrasonic flow meter, comprising an adjuster shell, a rectifying pore plate, a rectifying grid device and connecting flanges, wherein the rectifying pore plate and the rectifying grid device are arranged at an inlet end and an outlet end of the adjuster and are respectively sleeved into the two ends of the adjuster shell; the connecting flanges are fixedly connected at the two ends of the adjuster shell; the rectifying pore plate and the rectifying grid device are fixed on the adjuster shell through the connecting flanges; the connecting flange at the end of the adjusting pore plate is connected with a water flow pipeline to be an upstream of flowing the adjuster; and the connecting flange at the end of the rectifying grid device is connected with an inlet of the ultrasonic flow meter to be a downstream for flowing the adjuster. According to the prepositioned flow adjuster of the ultrasonic flow meter, the measurement accuracy and the stability of the ultrasonic flow meter can be effectively improved; and meanwhile, the prepositioned flow adjuster can be used for other flow measuring equipment or fluid transporting pipeline equipment.

Description

technical field [0001] The invention relates to a regulator in a liquid ultrasonic flow measurement device, in particular to a front flow regulator of an ultrasonic flowmeter. Background technique [0002] There are inevitably many pipe fittings or devices such as elbows, variable diameters, and valves upstream of the ultrasonic flow measurement device. These pipe fittings or devices will generate abnormal flows such as eddy currents, swirl currents, and pulsating flows, resulting in uneven flow velocity distribution of the fluid entering the flowmeter. Ultrasonic flowmeters are greatly affected by swirling flow, eddy current and uneven flow velocity distribution of fluid flow. If these unfavorable factors of abnormal flow cannot be effectively eliminated, the stability and accuracy of flow measurement will be reduced. By prepending a certain length of straight pipe section, the fluid can be fully developed into a uniform flow velocity, but this will take up a large space an...

AI Technical Summary

Problems solved by technology

[0004] To sum up, the existing flow regulators use a single rectification structure and rectification materials more, while the combined rectification structure is less; secondly, the existing flow regulator has a complex structure, which is difficult to manufacture and high in cost; There are flow regulators that mainly rectify gas fluids, and there are fewer flow regulators that rectify liquid fluids; finally, the current-limiting flow regulators have poor versatility and are inconvenient to disassemble and replace

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