JP2978229B2 - Liquid tank type thermal shock test equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid tank type thermal shock test apparatus, and more particularly to dust removal and acid removal of a heat medium liquid in a high temperature tank, and a heat medium liquid in a low temperature tank. The present invention relates to a liquid tank type thermal shock test apparatus suitable for automatically and continuously switching to dust removal, acid content removal, and water removal.

[Prior Art] The conventional apparatus has a structure in which moisture, dust and acid accumulate in a heat medium liquid in a low-temperature tank and dust and acid accumulate in a heat medium liquid in a high-temperature tank by repeatedly performing a thermal shock test. It has become. Since these substances make normal temperature control difficult and corrode the liquid tank type thermal shock test equipment, a washing device separate from the liquid tank type thermal shock test equipment should be connected to the low temperature tank or high temperature tank. It was necessary to periodically clean the heating medium liquid.

In addition, as a device related to this kind, a catalog “filter system for heat medium liquid” published by Taiyo Service Co., Ltd. and the like can be mentioned.

[Problems to be Solved by the Invention] The prior art does not consider that the cleaning of the heating medium in the high-temperature tank and the cleaning of the heating medium in the low-temperature tank are automatically and continuously performed. When cleaning the internal heating medium liquid,
When the cleaning device is connected to the high-temperature bath and the heat medium liquid in the low-temperature bath is subsequently cleaned, there is a problem that the cleaning device must be removed from the high-temperature bath and connected to the low-temperature bath.

An object of the present invention is to automatically and continuously switch between the cleaning of the heat medium liquid in the high-temperature tank and the heat medium liquid in the low-temperature tank and the cleaning so that the cleaning of each heat medium liquid can be performed in a short time. A liquid tank type thermal shock test apparatus is provided.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a method in which a heat medium is put into a high-temperature tank and a low-temperature tank, and a test product is heated in the high-temperature tank and the low-temperature tank. A liquid tank type thermal shock test apparatus configured to be alternately immersed in a liquid, wherein at least one set of a dust removal filter, an acid content removal filter, and a moisture removal filter, a control device for switching a cleaning mode, and A washing mode in which a heating medium connected to the low-temperature tank and disposed in the low-temperature tank, wherein the control device causes the heating medium liquid in the high-temperature tank to pass through the dust removal filter and the acid content removal filter; and a dust removal filter and an acid content removal filter. And switching to a washing mode in which the heating medium liquid in the low-temperature tank is passed through the moisture removal filter, and the heater is ignited during the cleaning of the high-temperature heating medium liquid and The heating medium liquid was configured to be heated to a predetermined temperature.

[Operation] In the cleaning of the heat medium liquid, first, the heat medium liquid in the high-temperature tank is sent to the dust removal filter and the acid content removal filter, and cleaning for removing dust and acid content in the heat medium liquid in the high-temperature tank is performed. During this cleaning, the heater arranged in the low-temperature tank is ignited to heat the heat transfer medium in the low-temperature tank to a predetermined temperature.

After performing the cleaning of the heat medium liquid in the high-temperature tank for a certain period of time, the heat medium liquid in the low-temperature tank heated to a predetermined temperature is sent to a dust removal filter, an acid removal filter, and a moisture removal filter by a command from the control device. Cleaning is performed to remove dust, acid, and moisture in the heat transfer medium in the low-temperature tank.

In this way, the heating of the heating medium liquid in the low-temperature tank is performed during the cleaning of the heating medium liquid in the high-temperature tank, and the washing of the heating medium liquid in the high-temperature tank and the washing of the heating medium liquid in the low-temperature tank are automatically switched to continuously. Therefore, the cleaning treatment of the heat medium liquid in each tank can be performed in a short time.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

1 is a system diagram showing one embodiment of the present invention, FIG. 2 (a) is a block diagram showing a cleaning procedure in the embodiment shown in FIG. 1, and FIG. 3 is a block diagram showing an example of a control device. FIG. 4 is a flowchart of the control by the control device shown in FIG. FIG. 2 (b) is a block diagram showing a cleaning procedure according to the prior art.

The liquid tank type thermal shock test apparatus shown in FIG. 1 includes a high temperature tank 1a containing a heat medium liquid 2a in a high temperature tank, a low temperature tank 1b containing a heat medium liquid 2b in a low temperature tank, and a test product (not shown). ) The heating medium liquid in the high temperature tank
The apparatus is provided with a suspending device for alternately immersing the heat medium 2a and the heat medium liquid 2b in the low-temperature tank, and a cleaning apparatus for cleaning the heat medium liquid 2a in the high-temperature tank and the heat medium liquid 2b in the low-temperature tank.

As the heat medium liquid, there is Sumitomo 3M Co., Ltd. product name "Fluorinert" (registered trademark). Among them, "FC-77" is used as the heat medium liquid 2a in the high temperature tank, and "FC-77" is used as the heat medium liquid 2b in the low temperature tank. "FC-53" or the like is used.

As shown in FIG. 1, an electric heater 3a, which is a heater, and a temperature measuring element 17a are installed in the high-temperature bath 1a.
As shown in FIG. 1, an electric heater 3b as a heater, a cooler 4, and a temperature measuring element 17b are provided in the low-temperature tank 1b.

As shown in FIG.
The apparatus includes a sample basket 5 for storing a test article, a hanging bar 6 for the sample basket, a chain 7 for moving the sample basket 5, and a motor 8 for driving the chain 7. The hanging device drives a chain 7 by a motor 8 to move the sample basket 5 over the high-temperature tank 1a and the low-temperature tank 1b via the hanging rod 6, and the high-temperature tank 1a and the low-temperature tank 1b. It is pulled down into the high-temperature tank 1a and the low-temperature tank 1b from above each,
The test article is configured to be alternately immersed in 2a and the heat medium liquid 2b in the low temperature chamber.

As shown in FIG. 1, the cleaning device includes a pump 10;
A dust removing filter 11, an acid removing filter 12, a tank 13 with a moisture removing filter, a moisture collecting tank 14, a pressure switch 16 provided between the pump 10 and the dust removing filter 11, and A pipe 15 connecting the tank 1a and the low-temperature tank 1b;
It is provided with solenoid valves 9a to 9i provided at key points in between, and a control device.

The control device includes a CPU 18 and a ROM as shown in FIG.
19, RAM 20, digital I / O interface 21
And a system bus 22. As shown in FIG. 3, the control device includes the solenoid valves 9a to 9i and a pump.
10, the electric heaters 3a and 3b, the pressure switch 16, and the temperature measuring elements 17a and 17b are connected via A / D converters 22a and 22b.

The CPU 18 of the control device can operate the solenoid valves 9a to 9i, the pump 10, and the electric heaters 3a and 3b through the digital input / output interface 21 according to software stored in the ROM 19.

On the other hand, the output content of the pressure switch 16 for determining the presence or absence of the heat medium flowing in the pump 10 is transmitted to the CPU 18 through the digital input / output interface 21.

The outputs of the temperature measuring elements 17a and 17b are output from the A / D converters 22a and 22a.
After being converted into a digital signal in b, it is transmitted to the CPU 18 through the digital input / output interface 21. Thereby, the CPU 18 can know the temperatures of the heating medium liquid 2a in the high-temperature tank and the heating medium liquid 2b in the low-temperature tank.

In the controller configured as described above, the intended cleaning operation can be performed by incorporating the software shown in the flowchart of FIG.

It is assumed that the ROM 19 contains software for controlling two types of soft timers A and B in addition to the software shown in the flowchart of FIG.

Then, in this embodiment, the control device first sets the cleaning mode for the heating medium liquid 2a in the high-temperature tank, and during the cleaning of the heating medium liquid 2a in the high-temperature tank, the electric heater 3b in the low-temperature tank 1b is ignited. ,
After the heating medium liquid 2b in the low-temperature tank is heated to a predetermined temperature and the heating medium liquid 2a in the high-temperature tank is washed, the mode is switched to a washing mode for the heating medium liquid 2b in the low-temperature tank.

The liquid tank type thermal shock test apparatus of the above embodiment is operated and operates as follows.

First, as shown in FIG. 2 (a) and FIG. 4, at the same time when the cleaning operation is started, the solenoid valves 9a, 9
f, 9g is opened, and the cleaning mode of the heating medium liquid 2a in the high temperature chamber is set, and the pump 10 is operated. As a result, the heating medium liquid 2a in the high-temperature tank 1a in the high-temperature tank 1a is discharged from the solenoid valve 9a, the pump 10, the dust removal filter 11, the solenoid valve 9g, the acid removal filter 12, and the solenoid valve.
9f → circulates from the high temperature tank 1a, so that dust and acid content can be removed from the heat medium liquid 2a in the high temperature tank. After this operation is continued for a predetermined time, the electromagnetic valves 9a, 9f, and 9g are closed, the pump 10 is stopped, and the cleaning of the heat medium liquid 2a in the high-temperature tank is completed.

On the other hand, during cleaning of the heating medium liquid 2a in the high-temperature tank, the electric heater 3b
Then, the heating medium liquid 2b in the low-temperature bath, which is usually kept at a low temperature (for example, -60 ° C), is raised to a normal temperature (about 20 ° C) as a predetermined temperature.

Next, the electromagnetic valves 9c and 9i are opened by the control device, the mode is switched to the cleaning mode of the heat medium liquid 2b in the low temperature chamber, and the pump 10 is operated. As a result, the heat medium liquid 2b in the low-temperature tank and the low-temperature tank 1b
Moisture accumulated on the inner surface of the tank moves to the tank 13 with the moisture removal filter via the solenoid valve 9c → the pump 10 → the dust removal filter 11 → the solenoid valve 9i. Then, when the heat medium liquid 2b in the low-temperature tank flowing in the pump 10 is exhausted, the solenoid valves 9c and 9i are closed, and the pump 10 is stopped.

Next, the solenoid valves 9b, 9d, 9g are opened, and the pump 10 is operated. As a result, the heat medium liquid 2b in the low-temperature tank circulates through the solenoid valve 9b, the pump 10, the dust removal filter 11, the solenoid valve 9g, the acid removal filter 12, the solenoid valve 9d, and the low-temperature tank 1b. Dust and acid can be removed from the liquid 2b. After continuing this operation for a predetermined time, the solenoid valves 9b, 9d,
Close 9g and stop pump 10.

On the other hand, by opening the electromagnetic valve 9e, it is possible to remove the water from the heat medium liquid and the water stored in the tank 13 with the water removal filter and return only the heat medium liquid to the low-temperature tank 1b. After a lapse of a predetermined time, the solenoid valve 9e is closed and the solenoid valve 9h is opened. Thereby, the water remaining in the tank 13 with the water removal filter can be taken out to the water recovery tank, and the water removal has been completed.

In this embodiment, the control device controls the heat medium liquid 2a in the high-temperature tank.
The washing mode can be automatically switched to the washing mode of the heating medium liquid 2b in the low-temperature bath to continuously perform the washing process. Therefore, as can be understood by comparing FIG. 2 (a) showing the cleaning procedure in this embodiment with FIG. 2 (b) showing the cleaning procedure in the prior art, in this embodiment, Cleaning can be performed more efficiently than technology.

In particular, in this embodiment, the heating medium 2b in the low-temperature tank is heated to a predetermined temperature by the electric heater 3b, which is a heater, and then washed, and the heating of the heating medium liquid 2b in the low-temperature tank is performed in the high-temperature tank. By performing the cleaning during the cleaning of the heating medium liquid 2a, the cleaning process can be performed in a shorter time.

[Effects of the Invention] As described above, according to the present invention, the heat medium liquid is placed in each of the high-temperature tank and the low-temperature tank, and the test article is alternately changed into the high-temperature tank heat medium liquid and the low-temperature tank heat medium liquid. A liquid tank type thermal shock test apparatus configured to be immersed in a filter, at least one set of a dust removal filter, an acid removal filter, and a moisture removal filter, a control device for switching a cleaning mode, and the control device, A cleaning mode including a heater disposed in a low-temperature tank, and a cleaning mode in which a heating medium liquid in the high-temperature tank is passed through the dust removal filter and the acid removal filter by the control device; and a dust removal filter, an acid removal filter, and a moisture removal filter. The cleaning mode is switched to a cleaning mode in which the heating medium liquid in the low-temperature tank is passed through, and the heating medium is ignited to wash the heating medium liquid in the low-temperature tank during cleaning of the high-temperature medium liquid. Since the heater is configured to be heated to the temperature, the cleaning of the heating medium liquid in the high-temperature tank and the cleaning of the heating medium liquid in the low-temperature tank can be automatically switched and performed continuously, so that the cleaning processing of the heating medium liquid can be performed efficiently. This has the effect that it can be performed well in a short time.

[Brief description of the drawings]

FIG. 1 is a system diagram showing one embodiment of the present invention, and FIG.
FIG. 2 is a block diagram showing a cleaning processing procedure in the embodiment shown in FIG. 1, FIG. 2 (b) is a block diagram showing a cleaning processing procedure according to the prior art, and FIG. FIG. 4 is a block diagram showing an example, and FIG. 4 is a flowchart of control by the control device shown in FIG. 1a: High-temperature tank, 1b: Low-temperature tank, 2a: Heat medium liquid in high-temperature tank, 2b: Heat medium liquid in low-temperature tank, 3a, 3b: Electric heater as heater, 4: Cooler, 5 ... sample basket, 6 ... hanging rod, 7 ... chain, 8 ... motor, 9a-9i ... solenoid valve, 10 ... pump, 11 ... dust removal filter, 12 ...
Acid removal filter, 13 ... tank with water removal filter, 14 ... water recovery tank, 15 ... piping, 16 ... pressure switch, 17a, 17b ... temperature detector, 18 ... control device CPU, 19 ... ROM, 20 ... RAM, 21 ... Digital I / O interface, 22 ... System bus.

Continuation of the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B01D 36/02 B01D 35/02 G01N 25/00

Claims (1)

(57) [Claims] 1. A liquid-tank type thermal shock wherein a heat medium liquid is placed in each of a high-temperature tank and a low-temperature tank, and a test article is alternately immersed in the heat medium liquid in the low-temperature tank. The test apparatus includes at least one set of a dust removal filter, an acid removal filter, and a moisture removal filter, a control device that switches a cleaning mode, and a heater connected to the control device and disposed in the low-temperature bath. A cleaning mode in which the control device passes the heat medium liquid in the high-temperature tank through the dust removal filter and the acid content removal filter, and a cleaning mode in which the heat medium liquid in the low-temperature tank passes through the dust removal filter, the acid content removal filter, and the moisture removal filter. And the heater is ignited during cleaning of the high-temperature heat medium liquid to heat the low-temperature tank heat medium liquid to a predetermined temperature. Liquid bath heat shock test device as.