JPS60129653A - Thermal immersion test apparatus - Google Patents

Abstract

PURPOSE:To make it possible to prevent the liquid surface of a cooling tank from freezing and to enable the leakage prevention and recovery of steam from a heating tank, by blocking the inside of a tank by an opening and closing door while blocking the outside thereof by a heat insulating lid to confine a frame in a hermetically closed space. CONSTITUTION:A cooler 21, a low temp. tank 1 cooled by said cooler 21 and equipped with a stirring blade 23 for moving a low temp. heating medium, a heater 22 and a high temp. tank 2 heated by said heater 22 and equipped with a stirring blade 23 for moving a high temp. heating medium are arranged in an outer box 25 surrounded by a heat insulating material 24 and an access opening 4 accessible to a frame 3 or cage having a specimen received therein is attached to each tank and a support rod 6 is passed through the frame 3 and a heat insulating lid 7 capable of moving along with the support rod 6 on the same axis while both of them are moved up and down by the reciprocal linear driving body 9 directly connected to the support rod 6 and horizontally moved on a horizontally arranged guide shaft 10 by the other reciprocal linear driving body 11 and a cold and hot cycle test is performed by repeating the immersion and movement between the tanks 1, 2 on the basis of the electric signal from the outside.

Description

DETAILED DESCRIPTION OF THE INVENTION This name is derived from freezing of the liquid surface and 1. This article relates to a heat immersion test device that attempts to prevent liquid consumption and contamination due to steam leakage to the utmost possible extent. , 1 Until now, when the frame (3) or the basket is in the tank entry/exit position 0 (4), the inside and outside of the tank are in the M release state,
The outside air begins to freeze on the liquid surface of the cooling tank (1), which eventually skews the immersion of the frame (3), causing problems in long-term operation. .

(1) In the heating tank (2), the vapor of the heating medium leaks outside, so to prevent the danger and odor caused by the high temperature, surround the device with a wall.
Furthermore, by installing ducts in the ceiling, expensive heating medium is disposed of outside. As a result, maintenance costs are high, in some cases amounting to several hundred thousand yen per month, and this is the reason for the low utilization rate, despite the excellent trial method.

These conventionally employed tests, equipment, and smells.

However, there are various problems, and it is difficult to carry out long-term sub-cruise operation or profitable economical operation.

The present invention solves the conventional problems by stopping the frame (3) at the entrance/exit (4>) for a certain period of time during rafting, and when the temperature is low, dehumidifying gas is blown into the space at the entrance/exit (4) to replace the outside air. When the transfer is on the high temperature side, the cooling gas is replaced with steam, and the replaced steam is condensed to perform liquid 4p reduction, so that the test can be performed without worrying about consumption or freezing of the heating medium fluid. I made it.

Embodiments of the present invention will be described as follows with reference to the drawings.

What is shown in FIGS. 1 to 4 is a representative first embodiment of the present invention 11[1J device (2), in which low-temperature heat is cooled by a cooler (21) and a cooler (21). A low temperature tank (1) equipped with a stirring blade (23) for moving the medium, and a heater (22)
and a high-temperature tank (2) equipped with a stirring blade (23) for feeding the high-temperature heat medium heated by the heater (22)', are arranged inside the outer W (25) surrounded by the heat insulating material (24). An entrance/exit (4) is provided through which a frame (3) containing a sample or a basket can enter and exit the multi-tank, an opening/closing door (5) is installed at the bottom of the entrance/exit (4), and a support rod (3) is attached to the frame (3). 6) and a heat insulating lid (7) that can move on the same axis as the support rod (6), and move them up and down using a reciprocating linear drive body (for example, an air cylinder) (9) directly connected to the support rod (6). , further horizontally moved on the horizontally installed guide shaft (10) by another reciprocating linear drive body (11), and the tank (1) is moved by an electric signal from the outside.
A cold/heat cycle test is performed by repeating immersion and movement between tanks (2).

Figure 1 shows its outline.

Figure 2 shows the frame (3) immersed in the tank, and the frame (3) is connected to the support rod (6) and the reciprocating linear drive body (9).
The drive body (9) is connected to a reciprocating linear drive body (11) that moves horizontally, and the drive body (9) is fixed to a reciprocating linear drive body (11) that moves horizontally. It is placed along the top center so that it can be moved between the tanks (2).

The opening/closing door (5) attached to the bottom of the entrance/exit (4) is open while the frame (3) is immersed, and the entrance/exit (4) is closed with an insulated door (
7) is closed.

Assuming that the current frame (3) is immersed in the high temperature bath (2), the reciprocating linear drive body (9) is activated at the end of the immersion time signal.
starts to rise, and when frame (3) reaches the (3 city) position, it stops and maintains the current state.

The insulating lid (7) stays in its original position under its own weight (it locks if the lid is small and light), and acts as a lid, allowing the opening/closing door (5
) closes the door in conjunction with the stop signal to create an airtight space within the entrance/exit (4).

A cooler (17) is attached to the outer wall of the entrance/exit (4), and serves to constantly condense and reduce the vapor of the heating medium.

Furthermore, cooling gas (air cooled inside the device, or liquefied carbon dioxide, chlorofluorocarbon gas, etc. from the outside, depending on the size of the device) is sent in from the air supply port (14) to lower the steam temperature inside the space (4). At the same time, residual steam is exhausted from the exhaust port (15), and a condenser is provided in the middle of the exhaust to liquefy and reduce the steam.

I would like to explain the reason for using cooling gas here.

The purpose of blowing in gas is to replace the steam in the space, so normal compressed air can be used, and if the capacity of the condenser on the exhaust side is appropriate, steam can be treated.

However, if the capacity of the device is large or the stop time in the space is extremely short, more efficient processing can be achieved by using cooling gas to promote steam condensation.

For the above reasons, we decided to use cooling gas for the configuration.

When the time to stop inside the doorway (4) has elapsed, the frame (
3') further rises to reach 31': ), but at this time the heat insulating lid (7) is also pulled up by the frame (3') and stops at (7').

The steam in the tank is isolated from the outside air by the closed door (5'), so there is almost no steam leakage to the outside.

(5) Movement is performed by a reciprocating linear drive body (9), but if the height of the device is restricted, it is necessary to construct the drive body in two stages.

With this, the process of ascension is completed and the plane moves horizontally.

FIG. 3 shows the state after the frame (3) has moved or before the frame (3) starts dipping.

Since the state in which the frame (3) is immersed in the high temperature tank (2) has been explained previously, in this figure, the state in the low temperature tank (1) will be explained.

In the cryogenic tank (1), the heating medium is cooled, so almost no steam is generated, but as the pressure inside the tank is lower than that outside, outside air can enter and condense on the inner walls and liquid surface of the tank. , try to get the original language cooled down.

In the present invention, the opening/closing door (5) disposed at the bottom of the entrance/exit (4)
) is closed at the (5') position to block outside air, and there is also a single heat insulating lid (8) at the top, creating a sealed space inside.

There is a heater (I6) on the outer wall of the entrance/exit (4) that utilizes the residual heat of the discharged gas from the refrigerator, and the enclosed air and outside air are cooled by heat conduction from the cryostat (1) and cooled down (6). It prevents it from being exposed.

The insulation lid (8) is a reciprocating linear drive body (11) that moves horizontally.
moves in the opposite direction.

The description in the figure is an example, in which a thin wire rope (19) is passed through a guide pulley (20) to a driver (11).
) to form a ring, and a heat insulating door (8) is installed on the drive side opposite to the drive body (11).

The heat insulating lid (8) slides on the rising edge of the upper outer periphery of the various entrances and exits (4) and on the top surface of the guide plate (26) connecting the two tanks, but at this time, the heat dripping while the frame (311) is moving is absorbed. It also has the role of returning the medium to its original state, and the gasket (
27) promotes smooth movement and return of the heat medium.

FIG. 4 shows the state in which the frame (311) is being moved and the state in which immersion is started.

An insulating lid (7゛) is placed on the top of the frame (311) and moves with the frame (3゛), and the insulating lid (8') on the opposite side is attached to the frame (3゛).
3") and pass three-dimensionally, so there will be no collision.

The frame (311') finishes its horizontal movement and begins immersion in the cryostat (1) (7), but the insulating lid (7') reaches the position (7) and the opening/closing door (5') is opened. Previously, the air inlet (12) was opened to blow in dry gas, and the outside air in the inlet/outlet (4) was discharged to the outside.

Dry air can be obtained relatively easily by using the equipment's cooling source, but the relative humidity is only around 2096, so
For completeness, it is necessary to supply drying gas from outside.

Usually, nitrogen gas or air at a temperature of -60°C m4 or less is used.

When drying gas is supplied, the frame (3”) is the entrance/exit (4)
By setting the time from when the drying gas reaches the inlet to when the opening/closing door (5') is opened, the supply amount of the drying gas can be kept to the minimum limit.

Please refer to FIG. 2 again for the state in which the opening/closing door (5) is open.

The frame (3') moves to the (3) position and enters the immersed state, and the entrance/exit (4) is closed with the heat insulating lid (7).

In the process of the frame (3) rising after the immersion time has elapsed, the frame (3) temporarily stops at the (3') position as in the case of high temperature, but air is not supplied.

(8) When the frame is lowered from the (3") position to the (3) position in the case of high temperature and is immersed, it does not stop in the middle as in the case of low temperature, and air is not supplied.

On the dark side, it is necessary to keep the steam out, but it is also necessary to drip the heating medium attached to the sample and frame.

The time required for dropping the heating medium depends on the viscosity of the heating medium: 1. - surface tension,
Although it is not constant because it varies depending on the temperature, etc., it seems that most of it drops in □4° to 5 seconds. ``Most of the test standards stipulate that the moving time of the sample be within 10 degrees, but it is better to take the rising time as long as possible to ensure the emergence of the sample.''The one shown in Figure 5 is The second operation of the main fishing device,
Almost the same angle effect as in the first embodiment is achieved: 1. ,, 1. The difference is that the inverting arms (31) have frames fixed to the left and right sides (two-frame type), and twice the same sample can be raised, inverted, lowered, and immersed without changing the size of the frame. The test can be performed in a matter of hours, and the heat insulating lid (8) (9) and moving mechanism (19, 20) used in the first embodiment ('1 frame type) are unnecessary.

The cooling and heating capacity requires approximately twice the output compared to the one-frame type.

By configuring a sealed space that is not found in conventional test equipment, the present invention eliminates freezing at low temperatures and steam leakage at high temperatures, which were the biggest drawbacks, and also makes it possible to recover the steam. hand,
As already explained, the reason for this was to minimize the consumption of the more expensive heating medium.

The present invention also solves another difficult problem with conventional test equipment.

When starting a test, it is normal to first place a sample in the frame and turn on the operation button to start automatic operation.

In conventional test equipment, the entrance and exit of the tank is open when the sample is placed in the frame, so it is not possible to immediately enter automatic operation.

If operation is forced, it is expected that the low temperature tank will condense water and the high temperature tank will release steam and the liquid level will drop before the temperature inside the iJl tank is sealed to the set temperature.

Therefore, in conventional testing equipment, the sample (10) is initially immersed without being placed in the frame, and when the temperature inside the tank reaches the set temperature, the frame is raised manually, and the sample is quickly placed in the frame and automatic operation begins. In this state, it is difficult to call it true autonomous driving.

The same applies to the end of the exam.

When the end of the test is notified, the sample must be quickly removed, the frame immersed manually, and the entrance/exit closed.

The device of the present invention solves the conventional problems, so all you have to do is operate it according to the test order, and when you start the operation, the frame enters the closed space and stops automatically, and you wait until the temperature inside the tank reaches the set temperature. It's safe to continue.

Even when the test is over, the door inside the tank is closed to block outside air, so the next test can be continued immediately by placing the frame in the same position as the test start and replacing the sample. I can do it.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of the first embodiment of the device of the present invention excluding the machine housing part, FIGS. 2 and 3 are enlarged sectional views of the main parts, FIG. 4 is an enlarged side view of the main parts, and FIG. The figure is a cross-sectional view of the second embodiment excluding the machine storage section. (1)...Cooling tank (2)...Mountain heating tank (3)...Frame or basket (4)...
...Entrance/exit (5)...Open/close door (6)
...Support rod (7) (8) ...Insulation lid (9) (11) ...Reciprocating linear drive body (10) ...
...Guide rod (12) (14) ...Air supply
Port (15)...Exhaust port (+6) (22
)...Heating device (17) (21)...Cooling device
(19)...Wire rope (20)...
...Guide pulley (23) ...Stirring blade (24) ...Insulation H (25) ...Mountain/Outside
Box (26)... Information board (27)...
...Gasket (31) ...Arm patent applicant Shozo Ito

Claims (1)

[Claims] , the base material, the frame with electricity (3) or the force, the entrance and exit of the tank (
At step 4), seal the frame or basket in an airtight space by cutting off the inside of the tank with the opening/closing door (5) and the outside of the tank with the insulating lid (7), and keep it cool! A thermal immersion test device that enables water to enter and stop on mp surfaces, and to prevent and recover steam from heating tanks.