Oil-water interface measuring instrument based on photoelectric sensing

Abstract

The invention relates to an oil-water interface measuring instrument based on photoelectric sensing. The oil-water interface measuring instrument comprises a photoelectric sensor measuring head, a measuring tape and a measuring tape data reading and displaying mechanism. The photoelectric sensor measuring head is arranged at one end of the measuring tape; the measuring tape is arranged in the measuring tape data reading and displaying mechanism; and the measuring tape data reading and displaying mechanism records the rotation circle speed of the measuring tape through an encoder, and then ta single-chip microcomputer calculates and displays the rotation numerical value of the measuring tape. A measuring circuit is arranged between a cylindrical shell and a hollow glass tube in the photoelectric sensor measuring head. In the measuring circuit, a light emitting tube is arranged in a light emitting area and two receiving tubes are arranged in a light receiving area to form a photoelectricsensor group. When the sensor group is put down to an oil-water interface, light is refracted and scattered to cause the change of light of two light ray receiving tubes, thereby determining whetherthe interface is changed or not. Therefore, the high-precision detection of the oil-water interface and automatic reading of the interface distance are realized; and compared with traditional equipment, the oil-water interface measuring instrument has the advantages of being high in measurement precision, capable of realizing full-automatic reading and easy to operate.

Description

technical field [0001] The invention relates to the field of photoelectric sensing, in particular to an oil-water interface measuring instrument based on photoelectric sensing. Background technique [0002] In the ship fuel supply system, oil-water separation is an extremely important link. The change of the oil-water interface in the cabin will seriously affect the energy consumption index and propulsion performance of the marine diesel engine. However, the medium in contact with various detection devices is mostly a mixture of oil and water, which will seriously cause fouling of the external devices of the measuring instrument, making components such as maglev unable to move freely with the interface due to fouling of the conduit, resulting in errors. At the same time, due to the viscosity of crude oil, the oil film formed outside the probes of short-wave, radio-frequency and other interface instruments cannot accurately measure the results. More importantly, these testi...

AI Technical Summary

Problems solved by technology

However, the medium in contact with various detection devices is mostly a mixture of oil and water, which will seriously cause serious fouling of the external devices of the measuring instrument, making components such as maglev unable to move freely with the interface due to fouling of the conduit, resulting in errors

At the same time, due to the viscosity of crude oil, the oil film formed outside the probes of short-wave, radio-frequency and other interface instruments cannot accurately measure the results.

More importantly, these testing equipment are expensive and complicated to replace, and cannot adapt to the shipping industry

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