Intelligent positive displacement flow meter

Abstract

An intelligent volumetric flowmeter comprises a liquid container and a communicating pipe and a lower liquid pipe which are connected with the liquid container into a whole; a nozzle is arranged on the liquid inlet of the liquid container; an electromagnetic valve is arranged on the lower liquid pipe; the communicating pipe is provided with a floater; a test tube is also sleeved on the outer side of the communicating pipe; a plurality of sets of test holes are symmetrically arranged on the test tube; the test holes are provided inside with a sensor consisting of a light-emitting diode and a reception diode. The invention leads the tested liquid to the liquid container; when the liquid is tested, the electromagnetic valve in the bottom of the liquid container is closed; the liquid level in the liquid container rises synchronously with the liquid level in the communicating pipe connected with the liquid container and drives the floater to rise. Test points are arranged outside the communicating pipe; when the floater passes, direct light emitted from the light-emitting diode is baffled and time is recorded; when the floater leaves, time is recorded; the volume between two test points is divided by the passing time to achieve the average volume flow during the time. The method has high testing precision and good adaptability of flow scope.

Description

technical field [0001] The invention relates to a flow meter, in particular to an intelligent volumetric flow meter used in experimental research where accurate measurement of liquid average volume flow and the like is required. Background technique [0002] In various experimental studies in scientific research institutes and colleges and universities, it is often necessary to measure the flow of liquid, especially when studying the flow and heat transfer of liquid, it is hoped that the flow of liquid can be accurately measured. [0003] At present, there are various types of flowmeters on the market, such as rotameters, turbine flowmeters, electromagnetic flowmeters, etc. The common feature of these flowmeters is that it is difficult to obtain sufficient test accuracy in the full range, and only a few different range of flowmeter used together. Rotameters often require manual readings. Turbine flowmeters and electromagnetic flowmeters require sufficient straight pipe sect...

AI Technical Summary

Problems solved by technology

[0003] At present, there are various types of flowmeters on the market, such as rotameters, turbine flowmeters, electromagnetic flowmeters, etc. The common feature of these flowmeters is that it is difficult to obtain sufficient test accuracy in the full range, and only a few different range of flowmeter used in conjunction with

Rotameters often require manual readings, and turbine flowmeters and electromagnetic flowmeters require sufficient straight pipe sections during installation, and the collected signals are susceptible to interference

Therefore, in the experiment, the weighing method is often used to test the liquid flow rate, which is time-consuming and laborious.

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