Apparatus and method for measuring volume and volume expansion coefficient of object

Abstract

The invention discloses a device for measuring the volume and the volume expansion coefficient of an object, and the device comprises a balance with a lower lifting hook, a lifting basket, a containerfor containing liquid, a heater and a temperature sensor. The balance is arranged above the container and is used for weighing the dry weight of a to-be-measured object and the weight of the to-be-measured object in the liquid; the lifting basket is hung at the lower part of the balance through the lower lifting hook and is used for placing the to-be-tested object and soaking the to-be-tested object in liquid. The device also comprises a microprocessor which is connected with the electronic balance, the heater and the temperature sensor and is used for controlling start and stop of the heater, receiving acquired data of the electronic balance and the temperature sensor and calculating and displaying the volume and the body expansion coefficient of the to-be-measured object. The inventionalso discloses a method for measuring the volume and volume expansion coefficient of gas inside a flexible package product and a method for measuring the volume expansion coefficient of a solid material. The device can simply and conveniently measure the volume and volume expansion coefficient of the object, and especially measure the gas in the object under the condition that the flexible packageproduct is not damaged.

Description

technical field [0001] The invention relates to the technical field of gas volume measurement, in particular to a device and method for measuring object volume and volume expansion coefficient. Background technique [0002] At present, flexible packaging products, such as bagged food, lithium batteries, etc., have been widely used in the fields of industry and people's livelihood. Due to changes in the biological, chemical and physical environments, gas will be generated inside flexible packaging products, and the amount of gas generated is often related to the properties of the materials inside the flexible packaging. For example, if the food inside the flexible packaging is spoiled, it will produce methane, carbon dioxide and other gases; the aging of the flexible packaging lithium battery or the decomposition of its internal electrolyte may produce harmful or flammable gases. Therefore, measuring the amount of gas generated inside flexible packaging products is not only ...

AI Technical Summary

Problems solved by technology

The material must be placed on the base during the measurement, and the base itself will expand, and both the base and the material will vibrate, making it very difficult to measure small changes in linearity, resulting in inaccurate volume expansion coefficients

[0005] It can be seen that the above-mentioned existing method and device for measuring the internal gas of flexible packaging products obviously still have inconvenience and defects in terms of structure, method and use, and need to be further improved urgently.

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