JPH0227234A - Liquid tank type thermal shock tester - Google Patents

Abstract

PURPOSE:To prevent freezing inside and outside an exhaust duct by connecting a high temperature gas injection port to the exhaust duct on the side of a low temperature tank. CONSTITUTION:A high pressure/high temperature gas injection port 15 is provided on the side of a low temperature tank of an exhaust duct 14. Then, as a sample box 5 is immersed into a liquid nitrogen 2 with a downward movement of a vertical bar 6 of a sample box and a vertical bar 8 of a lid, a nitrogen gas vaporized is released directly outside through the exhaust duct 14. Thus, the nitrogen gas is mixed with a high temperature gas injected at the injection port 15 thereby preventing freezing with the warming of the exhaust gas.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] This invention relates to a liquid bath type thermal shock test apparatus using a low 1 WL such as liquid nitrogen.

[Conventional technology]

Figures 3 to 6 show a conventional liquid bath type thermal shock test apparatus using liquid nitrogen.
is liquid nitrogen, 3 is a high-temperature bath, 4 is a high-temperature liquid, 5 is a sample box, 6 is a sample box top and bottom bar, 7 is a sample box lid, 8 is a cigarette lid top and bottom bar, 9 is a cigarette lid top and bottom bar left and right 10 is the lid of the high temperature tank, 11 is the lid of the low temperature tank,
13 is a sealed storage tank, and 14 is an exhaust duct.

Next, the operation will be explained. Sample box 5 as shown in Figure 3.
is immersed in high temperature liquid 4 and becomes high temperature.

Thereafter, the sample box upper and lower IS6 and the lid upper and lower rods 8 are moved upward, and the sample box 5 is taken out from the high temperature liquid 4 as shown in FIG. At the time of O, the lid 11 of the cryostat is opened. Thereafter, the lid vertical rod 8 moves along the support base 9 toward the cryostat and stops on the cryostat 1 as shown in FIG. At this time, close the high tank lid lO.

Next, the sample box upper and lower rods 6 and the lid upper and lower rods 8 are moved downward, and the sample box 5 is immersed in the liquid nitrogen 2 as shown in FIG. At this time, the vaporized liquid nitrogen gas is directly discharged to the outside through the exhaust duct 14.

[Problem to be solved by the invention]

Since the conventional liquid tank type thermal shock test equipment is configured as described above, the exhaust duct l. There were problems such as poor ventilation inside the duct, and eventually the duct became completely clogged with ice and could no longer function as an exhaust duct.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a liquid bath type thermal 1lff shock test device that prevents freezing inside and outside an exhaust duct.

[Means to solve the problem]

The filtrate tank type thermal shock test device according to this invention has an exhaust duct (・
The system is designed to inject high-pressure, high-temperature gas into a low-temperature chamber.

[Effect]

The high-pressure high-1 gas in this invention mixes with the cold liquid nitrogen gas generated in the cryostat to prevent freezing inside the exhaust duct.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. 1st
In the figure, the difference from the conventional example is that an inlet 15 for high-pressure and high-temperature gas is connected to the low-temperature chamber of the exhaust duct 14.

The operation is also the same as that of the conventional example, except that in the state shown in Fig. 2 (corresponding to Fig. 6 above), the sample box vertical rod 6 and the lid vertical rod 8 move downward to remove the sample. When the box 5 is immersed in liquid nitrogen 2 and the vaporized nitrogen gas is directly discharged to the outside through the exhaust duct 14, the high temperature gas injected from the high pressure high temperature gas inlet 15 is mixed with nitrogen gas. This warms the exhaust gas and prevents it from freezing.

〔Effect of the invention〕

As described above, according to the present invention, since the low temperature nitrogen gas is mixed with the high temperature gas at RT, the exhaust gas is warmed.
This has the effect of preventing freezing in the exhaust duct due to water vapor contained in nitrogen gas.

[Brief explanation of the drawing]

1 and 2 are cross-sectional views of a liquid bath type thermal shock test apparatus according to an embodiment of the present invention, and FIGS. 3 to 6 are cross-sectional views of conventional liquid bath type thermal shock test apparatuses. In the figure, 1 is a low temperature bath, 2 is liquid nitrogen, 3 is a high temperature bath, 4 is a high temperature liquid, 5 is a sample box, 14 is an exhaust duct, and 15 is a high pressure high temperature gas injection port. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] A liquid bath type thermal shock test that is equipped with two tanks for high-temperature liquid and low-temperature liquid, a sample box is moved between each tank, and exhaust air from the cryo-chamber is performed through an exhaust duct leading from the cryo-chamber to the outside of the device. A liquid tank type thermal shock testing device, characterized in that a high temperature gas inlet is connected to the low temperature tank of the exhaust duct.