Method and device for accurately measuring and metering variable of liquid level of hydraulic container or oil cylinder

Abstract

The invention discloses a method and device for accurately measuring and metering a variable of the liquid level of a hydraulic container or an oil cylinder. In the invention, the bottom end of a large-diameter hydraulic container or oil cylinder provided with a piston is connected and communicated with a small-diameter measurement tube; in the process of measurement, the piston of the large-diameter hydraulic container is contacted with a measured object so as to push the piston forwards a short distance in the large-diameter hydraulic container; or the measured object is put in the large-diameter hydraulic container or the oil cylinder, then hydraulic oil discharged from the large-diameter hydraulic container or the oil cylinder enters into the small-diameter measurement tube, so that the measured object produces a great multiple displacement, and then according to the visible metric on the small-diameter measurement tube, accurate data of the length, displacement or volume of the measured object is read out. By using the method and device provided by the invention, the related parameters of the volumes and capacities of special-shaped objects can be measured accurately, therefore, the device provided by the invention is a high-precision measuring and metering tool device which is simple and applicable and is high in technological content.

Description

technical field [0001] The invention relates to the technical field of physical measurement, in particular to a measurement method and device for accurate measurement of liquid level variables of a hydraulic container or an oil cylinder. Background technique [0002] In industrial and agricultural production, national defense construction and scientific research, it is necessary to accurately measure the length, area, volume, volume, pressure, flow, displacement, etc. of objects, such as vernier calipers commonly used in mechanical industrial production, infrared measurement in geographic surveying and mapping. Distance meters, flow meters, pressure sensors, etc., but these traditional measuring instruments and measuring tools have low measurement accuracy, such as length measurement, which can only be measured to the millimeter level, and cannot be improved to the micron level or nanometer level. For some special-shaped objects and containers, it is impossible to measure th...

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Problems solved by technology

[0002] In industrial and agricultural production, national defense construction, and scientific research, it is necessary to accurately measure the length, area, volume, volume, pressure, flow, displacement, etc. of objects, such as vernier calipers commonly used in machinery industry production, and infrared measurement in geographic surveying and mapping. distance meter, flow meter, pressure sensor, etc., but the measurement accuracy of these traditional measuring instruments and tools is not high, such as length measureme...

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