JPS6035093Y2 - gas expansion experiment equipment - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an experimental tool for easily understanding the phenomenon that gas expands and contracts depending on temperature.

To explain the configuration of the experimental apparatus according to the present invention, 1 is a transparent container containing a liquid 2 such as colored water at the bottom of the container, 3 is a cap attached to the open end of the upper part of the container, and a recess 4 is provided in the center of the cap. At the same time, a liquid guide pipe 5 is connected to the recess 4.

6 is the sealed gas in the container.

Reference numeral 7 designates a transparent outer container body having an elliptical cross section, and has an opening 9 in the center of a bottom portion 8, and a fitting tubular portion 10 protruding from the bottom portion 8, which is fitted into the recess 4 of the cap.

Reference numeral 11 denotes an inner container body, which is formed in a similar shape to the outer container body, and has a bottom portion 12 protrudingly provided with a fitting protrusion 14 provided with a slit 13 at the center of the tubular portion 1 of the outer container.
It is fitted inside 0.

Reference numeral 15 denotes a position-defining engagement piece, which is used to ensure a constant distance 16 between the inner and outer vessel walls of the double vessel body.

In this case, since the water surface is observed in the gap between the vessel walls, there is an advantage that changes in the height of the water surface appear sensitively.

17 is an insertion groove for the scale plate 18, and is for supporting the scale plate upright.

All the constituent members of the above-mentioned product are made of plastic except for the scale plate.

When the temperature of the container 1 is changed in the experimental device of the present invention,
The sealed gas inside generates a pressure according to its temperature, so this acts on the water surface of the liquid 2, and when it expands, that is, when the pressure increases,
The liquid is raised through the liquid conduit 5 and the slit 13 into the vessel wall gap 16, and the water level is represented by the numerical value on the scale plate.

By repeating experiments while keeping the amount of liquid in the container constant and varying the temperature of the container, it is understood that there is a certain relationship between the container temperature, that is, the gas temperature, and the numerical value on the scale plate.

Note that the larger the amount of liquid in the container, the less sensitive the water level is to changes in temperature, and the fact that the coefficient of expansion of liquid is extremely small compared to that of gas also has an effect that can be understood conceptually.

[Brief explanation of drawings]

FIG. 1 is a front view of the product, FIG. 2 is a longitudinal sectional view, and FIG. 3 is a sectional view taken along the line B--B in FIG. 1. 3...Cap, 13...Slit,
16...Gap between vessel walls.

Claims (1)

[Scope of utility model registration request] The container wall gap formed between the inner transparent container body and the outer transparent container body in which the scale plate is placed upright inside the container allows the liquid in the gas-tight container to pass through the liquid passage slit provided at the bottom of the container body. 1. A gas expansion experiment device, which is communicated by a liquid conduit, and is characterized in that changes in the water level in the vessel wall gap are observed in response to changes in the volume of gas in the gas-sealed container.