Valve-controlled ultrasonic reflective water meter

Abstract

The invention provides a valve regulation type ultrasonic reflection water meter which comprises a meter body, two ultrasonic energy converters, two ultrasonic reflection columns and a controller. The meter body comprises a water inlet channel, a first channel, a measuring channel, a second channel and a water outlet channel which are sequentially connected. A water level sensor is disposed in the water inlet channel. The two ultrasonic energy converters are arranged on the portion, at the lower end of the first channel, of the meter body and the portion, at the lower end of the second channel, of the meter body respectively. The two ultrasonic reflection columns are installed on the portion, at the upper end of the first channel, of the meter body and the portion, at the upper end of the second channel, of the meter body respectively and can stretch and retract up and down. The measuring channel is composed of a first measuring pipeline and a second measuring pipeline. The flow of the first measuring pipeline is smaller than that of the second measuring pipeline, the first measuring pipeline is located below the second measuring pipeline, a first electronic control valve is arranged in the first measuring pipeline, and a second electronic control valve is arranged in the second measuring pipeline. The two ultrasonic energy converters, the water level sensor and the two electronic control valves are electrically connected with the controller. When the water meter is used, measuring precision is high whether water flow is large or small.

Description

technical field [0001] The invention relates to the technical field of water meters, in particular to a valve-controlled ultrasonic reflection water meter. Background technique [0002] As everyone knows, in order to save water sources and control artificial waste of water resources, water meters are usually installed on the water inlet pipes of each household. Ultrasonic water meter is a new type of water meter that detects the time difference caused by the change of velocity when the ultrasonic sound beam propagates in the water upstream and downstream, analyzes and processes the flow velocity of the water, and then further integrates the flow of the water. High precision and stable work are popular. [0003] Existing ultrasonic water meters are divided into direct beam type and reflective type according to the layout of sound channels. The ultrasonic propagation direction of the through-beam ultrasonic water meter intersects with the water flow direction at a certain an...

AI Technical Summary

Problems solved by technology

The ultrasonic propagation direction of the beam ultrasonic water meter crosses the water flow direction at a certain angle, the output signal is small, the structure is complex, and the cost is high

Reflective ultrasonic water meters have too short a detection distance for pipes with a caliber of less than 100mm, and the resolution of the sampled signals is low, resulting in poor stability of the meter and low measurement accuracy, and the reflective element is susceptible to the deposition of scale and weakens the ultrasonic energy, and the ultrasonic water meter adopts Single-channel measurement, the smaller the water flow, the lower the measurement accuracy

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