A sensor device for a monochromatic optical flow meter

Abstract

The invention relates to a sensor device of a monochromatic light flow instrument. A pressure cover is arranged in a pressure cover hole in an impeller. A probe is embedded in a probe hole in a shell. A monochromatic light generator and a monochromatic light particle signal receiver are fixed to the shell. The monochromatic light generator is connected with the probe hole. The monochromatic light particle signal receiver is connected with a monochromatic light particle signal processor. A rotor is arranged in the shell. A front guide part and a rear guide part are arranged in the two ends of the shell respectively. The two ends of a rotor shaft are arranged in a shaft hole in the front guide part and a shaft hole in the rear guide part respectively. The front guide part and the rear guide part are fixed to the shell through expansion rings and pressing rings. Monochromatic light particles generated by the monochromatic light generator are received by the monochromatic light particle signal receiver and converted into electric signals through the monochromatic light particle signal processor, and the fluid flow is calculated through a computer. According to the sensor device, the monochromatic light particle counting technology is adopted, the sensor device is mainly used for measurement of the fluid flow, the performance of measuring the micro flow is improved, and the measuring accuracy is improved to a larger extent.

Description

technical field [0001] The invention belongs to a sensor, in particular to a sensor device of a monochromatic optical flow meter for measuring a fluid medium. Background technique [0002] Existing flowmeters such as electromagnetic flowmeters and turbine flowmeters calculate the fluid flow by changing the magnetic flux of the magnetic field, or by generating electrical signals such as vortex pressure in vortex flowmeters. Its problems are: [0003] 1. The electromagnetic flowmeter is based on the principle of Faraday's law of electromagnetic induction, and changes the electromotive force through the change of fluid flow rate. The turbine flowmeter is a flow measuring instrument. The power of the flowing fluid drives the turbine blades to rotate, cutting the magnetic field lines of the constant magnetic flux generated by the amplifier, and then measuring the fluid flow. Its rotational speed is approximately proportional to the volume flow. The indication of fluid volume t...

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Problems solved by technology

Its advantages are earthquake resistance and good measurement sensitivity, but the disadvantage is that the installation of a voltage stabilization compensation system results in too much weight, complicated assembly, and troublesome repairs, and the diameter is limited.

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