JPH03249541A - Thermal shock testing device - Google Patents

Abstract

PURPOSE:To execute the thermal shock test in a short time and with high test efficiency by dividing and forming two tanks of high and low temperatures in the vertical direction by a heat insulating layer and providing a carrying body for holding a sample case to be freely ascendable and descendable in the high and low temperature tanks. CONSTITUTION:A high temperature tank 21 and a low temperature tank 22 are divided and formed in the vertical direction by a heat insulating layer 23. When a sample case 24 held by a carrying body 26 becomes a high temperature in the tank 21, a rod 29 is moved downward by a driving device, the sample case 24 is immersed into liquid nitrogen 30 in the tank 22, and an object to be tested in the sample case 24 falls to a temperature of the liquid nitrogen 30. As a result, an ascent and a descent of the carrying body 26 are controlled by flanges 27, 28 and a through-window 25. Also, vaporized gas of the liquid nitrogen exhausted by a duct 31 and the inside of the tank 22 is held in atmospheric pressure. In such a way, by allowing the carrying body to ascend and descend between the high and low temperature tanks, the thermal shock test can be executed in a short time and efficiently.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a thermal shock test apparatus suitable for carrying out thermal shock tests using low-temperature liquids such as liquid nitrogen liquid.

[Conventional technology]

Conventionally, this type of thermal shock test equipment is shown in Figures 2(a) to (dl).
It is configured as shown. This will be explained based on the same figure. In the same figure, numerals 1 and 2 are two tanks I having upwardly opening through windows 3 and 4, and the internal temperatures of each tank are different from each other.

A space 5a for moving the sample is provided above the space 5a inside the space 5a for moving the sample.
6 is housed in the airtight container 5 and is provided above both the tanks 1 and 2, and has a horizontally extending rail (not shown). 7 is a support stand that is housed in the airtight container 5.
a first support rod which is movably provided and advances and retreats in the horizontal and vertical directions; 8 is a movable lid body provided at the tip of the support rod 7 for opening and closing each of the through windows 3 and 4; 9 is a movable lid; A second support rod is provided on the lid 8 so as to be able to rise and fall freely, and holds the sample box 10 at its tip. Incidentally, reference numerals 11 and 12 designate rotatable lids that are pivotally supported on both the tanks 1 and 2 and open and close the through windows 3 and 4, respectively. In addition, 13 indicates both the tanks 1 and 2.
Of these, liquid nitrogen is stored in the cryostat 2, and reference numeral 14 is an exhaust duct that communicates the inside and outside of the cryostat 2.

Next, a thermal shock test device using the thermal shock test device configured as described above will be explained using FIGS. 2(a) to (dl).

First, when the sample box 10 housed in the high-temperature tank 1 reaches a high temperature as shown in FIG. move upward. At this time, the moving lid 8 and the rotating lid 11
．． Open 12. Next, the first support rod 7 is moved in the horizontal direction as shown in fc) of the same figure. At this time, the sample box 10 is positioned in the opening direction of the through window 4. Further, the lid 11 of the high temperature bath 1 is closed. After that,
By moving the first support rod 7 and the second support rod 9 downward, the sample box 1 is placed in the liquid nitrogen 13 in the cryostat 2.
Soak 0.

In this way, a thermal shock test can be performed.

The liquid nitrogen gas generated in the cryostat 2 is transferred to the duct 1.
4, it is released outside the tank.

[Problem to be solved by the invention]

By the way, in this kind of thermal shock test apparatus, the high temperature chamber 1 and the low temperature chamber 2 are arranged in parallel in the horizontal direction, and the through windows 3.4
Since the sample box 10 has a structure that opens upward, it is necessary to move the sample box 10 between species in two directions: horizontally and vertically. As a result, a large amount of time is spent moving the sample box 10 between species, resulting in a problem of poor test efficiency.

Moreover, when both tanks 1 and 2 are arranged in parallel in the horizontal direction, there is also a problem that the apparatus becomes larger in the horizontal direction and the installation area becomes wider in the horizontal direction.

The present invention has been made in view of these circumstances, and it is an object of the present invention to provide a thermal shock test device that can increase test efficiency and reduce the horizontal installation area.

[Means to solve the problem]

The thermal shock test device according to the present invention vertically defines two high and low temperature tanks with different internal temperatures by a heat insulating layer,
A through window through which the sample box can pass is provided in this heat insulating layer, and a carrier having a flange at each end facing the periphery of both openings of the through window and holding the sample box between these flanges is placed inside both tanks. It is installed so that it can be raised and lowered freely.

[For production]

In the present invention, a thermal shock test can be performed by moving the carrier up and down between a high temperature tank and a low temperature tank.

〔Example〕

EMBODIMENT OF THE INVENTION Hereinafter, the structure etc. of this invention will be explained in detail by the Example shown in the figure.

FIGS. 1(a) to 1(dl) are cross-sectional views for explaining a thermal shock test using a thermal shock test apparatus according to the present invention.

In the figure, reference numerals 21 and 22 indicate two high and low temperature tanks having different internal temperatures, which are vertically defined by a heat insulating layer 23. This heat insulating layer 23 has
A through window 25 is provided through which a sample box 24 containing a test object (not shown) can pass. Reference numeral 26 denotes a carrier for holding the sample box 24, which is provided in both the layers 21 and 22 so as to be able to move up and down, and is configured to be able to slide within the through window 25. Two upper and lower flanges 27 and 28 are provided at both ends of the conveyor 26, respectively, to face the peripheral edge of each opening of the through window 25. The upper flange 27 of these flanges 27 and 28 is the through-hole 2
When the sample box 24 comes into contact with the upper opening periphery of the cryostat 2
When the sample box 24 is housed in the high temperature tank 21 and the lower flange 28 comes into contact with the lower opening periphery of the through window 25, the sample box 24 is housed in the high temperature bath 21. Note that 29 is a rod that moves forward and backward in the vertical direction by a drive device (not shown) such as a cylinder, and the conveyor 26 is connected to the tip end thereof. Also, 30
31 is a liquid nitrogen stored in the cryostat 22 of the two tanks 21 and 22, and 31 is an exhaust duct that communicates the inside and outside of the cryostat 22.

In the thermal shock test apparatus configured in this way, a thermal shock test can be performed by moving the carrier 26 up and down between the high temperature tank 21 and the low temperature tank 22.

Therefore, in this embodiment, since the movement of the sample box 24 between species is only in the vertical direction during the thermal shock test, the time required to move the sample box 24 between the species can be shortened.

Furthermore, in this embodiment, by arranging both the tanks 21 and 22 vertically in parallel, the apparatus can be made smaller in the horizontal direction.

Next, a thermal shock test method using the thermal shock test apparatus configured as described above will be explained using FIGS. 1(al to d).

First, when the sample box 24 housed in the high-temperature tank 21 reaches a high temperature as shown in FIG. 5(a), the loft 29 is moved downward by a drive device (not shown) as shown in FIG. 2(b). let At this time, both flanges 2728 are connected to the through window 25.
It is spaced apart from the periphery of each opening. Next, as shown in FIG. ) is lowered to the temperature of the liquid nitrogen 30.Also, the liquid nitrogen 30 is vaporized, but this vaporized gas passes through the inside of the tank 1-31 and is released to the outside of the tank, so the pressure inside the cryostat 22 decreases. is maintained at atmospheric pressure.Thereafter, the rod 29 is moved upward by a driving device W (not shown) as shown in Td) in the figure.

In this way, a thermal shock test can be performed.

Note that, of course, the type of drive device in the present invention is not limited to the above-mentioned embodiments.

〔Effect of the invention〕

As explained above, according to the present invention, two high and low temperature tanks having different internal temperatures are vertically defined by a heat insulating layer, a through window through which a sample box can pass is provided in this heat insulating layer, and a through window through which a sample box can pass is provided in the insulating layer. A carrier that has flanges at each end facing the edges of both openings of the window and holds the sample box between these flanges is installed in both tanks so that it can move up and down, so that the carrier can move between the high temperature chamber and the low temperature chamber. A thermal shock test can be performed by raising and lowering the Therefore, since the movement of the sample box between species during the thermal shock test is only in the vertical direction, the time required to move the sample box between species can be shortened and the test efficiency can be increased. In addition, by arranging the high-temperature chamber and the low-temperature chamber vertically in parallel, the device can be made smaller in the horizontal direction.
Another advantage is that the installation area in the horizontal direction can be reduced.

[Brief explanation of drawings]

Figures 1 (al to d) are cross-sectional views for explaining the thermal shock test using the thermal shock test apparatus according to the present invention, and Figure 2 (al to al
~fd) is a cross-sectional view for explaining a thermal shock test using a conventional thermal shock test device. 21...High temperature tank, 22...Low temperature tank, 23...
- Heat insulation layer, 24...sample box, 25...penetration window,
26.・、・Transporting body, 27.28...Flange. Agent Masuo Oiwa Figure 1 (O) Figure (b) Figure (a) Figure (b) et al. Figure 2 (c) Figure (d)

Claims (1)

[Claims] Two high and low temperature tanks with different internal temperatures are vertically defined by a heat insulating layer, a through window through which the sample box can pass is provided in the heat insulating layer, and flanges facing the edges of both openings of the through window are provided. A thermal shock testing apparatus characterized in that a carrier is provided at each end of the apparatus and holds the sample box between the two flanges, and is movable up and down within the two layers.