Apparatus for measuring volume by built-in method

Abstract

The invention relates to a device for measuring volume via inlay method, for measuring the volumes of static expansion method vacuum containers and the container demanding accurate measurement, and especially the volumes of irregular container. The device is composed of a gas supply system, a standard volume, a small container of unknown volume, a large container of unknown volume, a vacuum gauge, a block valve and a gas exhaust system, wherein the gas supply system is connected with the small container of unknown volume for supplying gas to the small container; the standard volume is put in or taken out via a flange on the small container; the pressure in the small container is measured by the vacuum gauge; the pressure in the large container is measured by the vacuum gauge; and the gas exhaust system is connected with the large container for exhausting gas from the large container. The invention utilizes a standard volume rod which is measured accurately as a reference volume, to be arranged into a container of unknown volume, utilizes gas expansion method and refers to pohl law to calculate the volume of the unknown container accurately. The method is suitable for measuring the volumes of irregular containers and can improve volume measurement accuracy significantly.

Description

technical field [0001] The invention relates to a volume measuring device with a built-in method. It can be used for volume measurement of static expansion vacuum containers and containers requiring accurate volume measurement, especially for volume measurement of irregular containers. This method can improve the accuracy of volume measurement. Background technique [0002] In a static expansion system, a basic method of determining the volume of a container is the gravimetric method, that is, the weight of the container before and after it is filled with liquid (usually water) is used to calculate the volume. Although this method can ensure accurate measurement of weight, it is difficult to measure the volume accurately due to the influence of air bubbles in the liquid and the dead space of the valve. For small containers, this phenomenon is more serious. [0003] Another method of measuring the volume of the container is the external method, and the measurement principl...

AI Technical Summary

Problems solved by technology

The difference is that the external method uses an external container with a known volume and connects it with the measured container with a valve. The volume of the container can be accurately measured, but the connected valve cannot be accurately measured, which makes it difficult to accurately measure the volume of the final container.

Images