JPS5812124Y2 - netsubunsekisouchiyoumitsupuushiriyouuki - Google Patents

Description

[Detailed description of the invention] This invention relates to a sealed sample container used in a scanning calorimeter, a differential thermal analyzer, etc.

As shown in FIG. 1, this type of container conventionally used has a flange b formed on the upper edge of a capsule a,
A cover plate C covering the capsule a is polymerized on top of this, and
The peripheral edges b' and C' of both the glasses and C were cut into one piece, and C was joined to the capsule a by utilizing the mutual engagement of the folded surfaces, thereby sealing the trial lid inside the capsule a. something is known.

This conventional type has the advantage that the sealing operation is relatively easy and the container itself is convenient to handle, but on the other hand, the disadvantage is that if the pressure inside the container increases, the seal will break and the container will easily become deformed. There is.

Generally speaking, the maximum pressure that can be used is 3 atmospheres, and if the pressure is higher than that, it becomes impossible to maintain a sealed state.

Furthermore, in the above-mentioned containers, the material of the container is limited to silver, aluminum, or copper due to the means to obtain a seal, and as a result, samples with special chemical properties such as mercury or potassium cannot be used. In this case, you will feel very inconvenienced.

The purpose of this invention is to provide an extremely effective means for quickly eliminating the above-mentioned drawbacks of the conventional technology.In particular, this invention has at least one open recess and is designed to accommodate a thermal analysis device. A capsule formed into a cylindrical shape for storing a sample to be measured, a plug having a certain thickness that is press-fitted into the capsule through an opening recess of the capsule and closing the opening recess, and an inner wall of the opening recess. and a small-diameter portion formed in the upper step of the opening recess, and the sample to be measured is stored below the same step in the opening recess, and the plug is The outer circumferential surface was in contact with the inner circumferential surface of the opening recess, and the lower end surface was in contact with the same step part, so that the sample to be measured was housed in a sealed state in the capsule, and the whole had a pressure resistance of 30 to 50 atmospheres. It is the composition.

Next, this will be explained in detail based on the embodiment shown in FIG. 2 and below.

In the figure, reference numeral 1 denotes a capsule, which is composed of a cylindrical peripheral wall 1a and a bottom part 1b.9, the peripheral wall 1a is provided with an overhanging part 1C for stabilizing its posture at the lower part of the peripheral wall 1a. An open recess 2a is provided inside.

A predetermined amount of sample S is stored in the lower half of the open recess 2a in the capsule 1.

Next, as shown in FIG. 3, the plug 2 formed to fit the inner diameter of the capsule 1 is press-fitted into the capsule 1, and the plug 2 is inserted into the capsule 1 using a press-fitting tool. Press 3 to push it inside.

In this case, the lower end of the plug 2 is connected to the side step 1 inside the opening recess 2a.
It is positioned by e.

This plug 2 needs to have a sufficient thickness so that it will not bend under the force applied in the radial direction.

Finally, as shown in Fig. 4, a hole 4af with a trapezoidal cross section on the bottom surface:
The upper part of the capsule 1 is squeezed 9 using the compression tool 4 held, and the sealing of the sample S is completed.

In this case, the diameter of the upper edge 1d of the capsule 1 is smaller than the diameter of other parts due to the shape of the hole 4a having a trapezoidal cross section.

In this invention, as mentioned above, the upper part of the capsule 1 was squeezed to seal the sample S, so the ability to withstand internal pressure was dramatically improved, and according to experiments conducted with the capsule 1 and the plug 2 made of aluminum, The internal pressure is around 50 atmospheres! It has been confirmed that the seal will not break or the container will not be deformed.

Compared to the conventional method mentioned earlier, this is actually 15 times to 2 times more effective.
If you withstand 0 times the internal pressure, you can do a G.

Moreover, unlike conventional methods, this device does not have major restrictions on the material of the container, so it can be made of iron or other materials in the same way. Its practical effects are significant, as you don't have to feel any inconvenience at all.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing a conventional example, FIGS. 2 to 4 are cross-sectional views showing the manufacturing process of the container according to the present invention, and FIG. 5 is a cross-sectional view of the container of the present invention when completed. ...Capsule, 1a...peripheral wall, 1b...bottom,
1C... Overhanging part, 1e... Side step part, 1d...
Upper edge, 2... Plug S... Sample, 2a... Opening recess, 4... Compressor, 4a... Hole.

Claims (1)

[Scope of utility model registration request] A capsule formed in a cylindrical shape having at least one opening recess and for storing a sample to be measured for a thermal analyzer inside; a plug having a certain thickness;
A step part formed on the inner wall of the opening recess and a narrow diameter part formed above the opening recess, and the sample to be measured is housed below the step part in the opening recess. At the same time, the outer circumferential surface of the plug is in contact with the inner circumferential surface of the opening recess, and the lower end surface thereof is in contact with the same step part, so that the sample to be measured is hermetically housed in the capsule, and the entire sample is in contact with the inner circumferential surface of the opening recess. A sealed sample container for a thermal analysis device, characterized in that it has a pressure-resistant configuration of ~50 atmospheres.