JPH07102867B2 - Closed container - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a closed container that shields an article from the outside air, and particularly when the article is various equipment used in an environment in which a corrosive gas exists. In the case where the various containers are sealed from the corrosive gas atmosphere or the above-mentioned article is, for example, a sample under experiment, the sample is stored away from the outside air and stored for a long time. In particular, the present invention relates to a closed container having means for replacing the air in the storage space of the article with another gas.

[Conventional technology and problems]

For example, when operating various equipment such as observation equipment in a natural environment where corrosive gases such as hydrogen sulfide exist, such as in volcanic areas, it is necessary to protect the various equipment by blocking it from the above corrosive gases. There is.

Conventionally, as a method of protection, a method has been adopted in which the case of the device itself has a closed structure, or after the device is put in the storage case, a sealant is applied to a gap such as a cut or an opening / closing portion of the storage case. ing.

According to the above-mentioned conventional technology, there is a difficulty in maintaining hermeticity for a long period of time because the sealing mechanism such as the cable drawn out from the equipment, the wire, etc., the opening / closing part and the opening / closing part is complicated.
When applying the sealant, not only the workability is poor and the sealability is incomplete, but also the inside of the storage case cannot be inspected after sealing with the sealant. In the case of a device used in an environment where corrosive gas is always present, such as in the above-mentioned volcanic region, it is virtually impossible to inspect the device at the installation site.

Further, for example, in the case of storing an experimental sample for a long period of time in a state where the outside air is shut off, it is common to store the sample in a glass container having a structure in which a container body and a lid are rubbed together. If the container is incompletely sealed, or if it is necessary to replace the internal space with an atmosphere such as an inert gas, a mechanism with complicated glass tubes and cocks is required. .

The present invention proposes to solve the problems described above.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention covers a saucer-shaped container with a lid whose bottom is opened, and defines a space surrounded by the lid and the container as a storage space for articles, and at least the container. While filling the non-volatile liquid in the boundary between the lid and the lid, communicate with the inside and outside of the lid, the air in the storage space other gas (inert gas, or the place where the closed container is placed The air supply pipe and the exhaust pipe for replacing with air collected at another place) are provided.

[Operation of the invention]

The non-volatile liquid filled in the saucer-shaped container fills the gap existing at the boundary between the container and the lid, so that the articles placed in the storage space surrounded by the lid and the container are exposed to the outside air. Completely shut off from. In this state, by injecting a gas different from the air in the storage space from the air supply pipe, the air in the storage space is exhausted from the exhaust pipe, and the atmosphere of the storage space is an environment in which a closed container is placed. The atmosphere can be replaced with a different atmosphere.

Example of Invention

An embodiment of the present invention will be described in detail by taking a closed container as an example to shut off various devices from the atmosphere of corrosive gas.

The drawings all illustrate embodiments of the present invention.
FIG. 3 is an exploded perspective view showing a device to be housed, FIG. 2 is a sectional view of the device housed, FIGS. 3 and 4 are partial perspective views and sectional views showing other embodiments, and FIG. It is sectional drawing which shows another Example.

As shown in FIG. 1, a closed container according to the present invention includes a lid 2 that covers a device to be housed, for example, an observation device (hereinafter referred to as a device) 1, a mounting table 3 of the device 1, and a saucer shape. And the non-volatile liquid contained in the container 4 (hereinafter,
It is called liquid. ) 5, an air supply pipe 6, and an exhaust pipe 7. The air supply pipe 6 and the exhaust pipe 7
Means that after the device 1 is housed, the air in the sealed container, which will be described later, is replaced with another gas, and then the device can be removed from the sealed container.

The lid 2 is made of, for example, a corrosion-resistant material such as vinyl chloride resin, and the internal volume thereof can accommodate the entire device 1 placed on the mounting table 3 together with the mounting table 3, and stores the device 1. In such a state, the air supply pipe 6 and the exhaust pipe 7 are set to be sufficient to communicate with each other from the outside to the inside.

The bottom surface 201 of the lid body 2 is open, and the air supply pipe 6 and the exhaust pipe 7 are provided at the lower ends of the opposite side surfaces 202 and 203.
Further, notches 204 and 205 for passing the cable 101 and the like of the device 1 are provided. The notches 204 and 205 may be provided on any of the four side surfaces, or only one of them may be provided (the notch may be provided at one place).

The mounting table 3 has a mounting surface 301 and a pair of legs 302 and 303 formed by bending a plate into a substantially U-shape. The mounting surface 301 is wide enough to allow the device 1 to be mounted stably. When the cover 2 is covered, the air supply pipe 6 and the exhaust pipe 7 are inserted between the inside of the side surfaces 202, 203 of the cover 2 provided with the notches 204, 205 and the outside of the legs 302, 303 of the mounting table 3. In addition, the height of the legs 302 and 303 is set to be higher than the height of the notches 204 and 205 of the lid 2.

Further, since the mounting table 3 is placed in the atmosphere shielded from the outside air together with the device 1, as will be apparent from the description below, its material is not necessarily required to have corrosion resistance.

Like the lid 2, the container 4 is made of a corrosion-resistant material such as vinyl chloride resin, and has a saucer shape with an open upper surface 401. The opening area of the upper surface 401 is set to be wider than the opening area of the bottom surface 201 of the lid body 2. When the lid body 2 is placed on the container 4, the inside of the side surface of the lid body 2 and the outside of the side surfaces 202 and 203 of the lid body 2 are set. It is considered that there is a sufficient margin between which the air supply pipe 6 and the exhaust pipe 7 are inserted.

The container 4 is filled with a nonvolatile and chemically stable liquid 5 such as silicon oil.

The air supply pipe 6 and the exhaust pipe 7 are made of flexible tubes that can be freely formed,
The respective lengths are set so that both ends can be exposed to the device storage space inside the lid 2 and the outside through the notches 204 and 205 of the lid 2.

FIG. 2 shows a state in which the device 1 is housed in the hermetically-sealed container having the above-described respective parts. That is, the mounting table 3 is placed in a container 4 filled with the liquid 5 in a state of being laid face down, the device 1 is mounted on the mounting surface 301, and the entire mounting 1 together with the mounting table 3 is covered by the lid body 2. The space A in the closed container is
The air supply pipe 6 and the exhaust pipe 7 communicate with the outside air.

With the above configuration, the gap formed at the boundary between the lid 2 and the container 4 is filled with the liquid 5, so that the storage space A of the device 1 communicates with the outside air via the air supply pipe 6 and the exhaust pipe 7. Is shielded from the outside air. Further, the height of the liquid surface of the liquid 5 is set to be higher than the height of the notches 204 and 205 provided in the lid body 2 and lower than the height of the legs 302 and 303 of the mounting table 3. This ensures that the device 1 is not submerged in the liquid 5 and that the cable 10 is withdrawn from the device 1.
Even if 1 is led out through the notch, for example, 204, the sealing property of the device housing space A is not broken at that portion.

Next, a work procedure for housing the device 1 in the closed container, particularly a work procedure performed in an environment in which a corrosive gas is contained in the air will be described.

First, place the placing table 3 in the center of the container 4 and place the placing table 1 on it.
The cable 101 of the device 1 and the air supply pipe 6 are notched 2
The exhaust pipe 7 is connected to the inside and outside of the storage space A via the notch 205 via 04, and the cover 2 is covered.
Next, the liquid 5 is poured into the container 4 until the liquid surface thereof is above the notches 204 and 205 of the lid 2 and below the mounting surface 301 of the mounting table 3. Either the work of covering the lid 2 or the work of pouring the liquid 5 may be performed first.

Next, an inert gas such as nitrogen gas is injected into the storage space A through the air supply pipe 6. As a result, the air containing the corrosive gas filled in the storage space A is gradually exhausted to the outside through the exhaust pipe 7, and eventually the device 1
The storage space A of is replaced with an atmosphere of inert gas. At the exit of the exhaust pipe 7, by monitoring the gas discharged from the storage space A, when it is found that the inside of the storage space A has been sufficiently replaced with the inert gas, the inert gas is injected. And the air supply pipe 6 and the exhaust pipe 7 are pulled out from the closed container.

As a result of the above-mentioned work, the device 1 becomes
The atmosphere is maintained for a long period of time by being placed in an atmosphere in which there is no substance that damages, and being completely shielded from the outside air by the liquid 5.

In the above work, the gas injected into the storage space A through the air supply pipe 6 does not necessarily have to be an inert gas, and may be fresh air collected outside the volcanic zone, for example. That is, the fresh air normally does not contain corrosive substances. Further, in the case of injecting the above-mentioned air, fresh air can be collected in a non-volcanic area by a simple means such as a balloon, and the balloon can be connected to the air supply pipe 6 in the device storage space A. The air can be replaced with fresh air (in contrast, when using an inert gas, a gas cylinder or the like is required).

Next, another embodiment will be described with reference to FIGS.
That is, in the other embodiment, as shown in FIG. 3, a partition 402 is provided inside the container 4 at a predetermined distance from the four side surfaces to form a side groove for storing the liquid 5 around the inside of the container 4.
403 is provided, and as shown in FIG.
Is in contact with the container 4 in the gutter 403.
The storage space A is completely shielded from the outside air by the liquid 5 in the side groove 403 as in the above embodiment. The fourth
The figure shows the state in which the air supply pipe 6 and the exhaust pipe 7 are removed, that is, the state after the air in the storage space A is replaced with another gas.

In this embodiment, the structure of the container 4 is slightly complicated as compared with the previous embodiments, but the required amount of the liquid 5 is small, the mounting table 3 is not required, and therefore, the space occupied by the mounting table 3 is a storage space. There are advantages such as that A can be widely taken.

Next, another embodiment will be described with reference to FIG. That is, in the other embodiment, the air supply pipe 6 and the exhaust pipe 7 are fixedly attached to the lid body 2.
Is an end portion on the inner side of the lid body 2 (hereinafter, referred to as an inner end).
The same applies to the exhaust pipe 7) 601 is below the liquid level of the liquid 5, and the end of the lid 2 on the outside side (hereinafter referred to as the external end. The same applies to the exhaust pipe 7) 602 is below the liquid level of the liquid 5. It is attached to the side surface 202 of the lid body 2 so as to be above, and the exhaust pipe 7 has its inner end 701 above the liquid level of the liquid 5 and its outer end 702 below the liquid level of the liquid 5. It is attached to the side surface 203 of the lid body 2 as described above.
The air supply pipe 6 and the exhaust pipe 7 in this embodiment are not necessarily required to have flexibility.

When the lid 2 is put on the container 4 filled with the liquid 5, the liquid 5 enters the air supply pipe 6 from the inner end 601 and the exhaust pipe 7 enters from the outer end 702, respectively, and the air supply pipe 6 and the exhaust gas are exhausted. The communication path with the outside via the pipe 7 is cut off, and the storage space A of the device 1 is completely shut off from the outside air.

When the air in the storage space A is replaced with, for example, an inert gas, when the inert gas is injected from the outer end 602 of the air supply pipe 6, the liquid 5 in the air supply pipe 6 is pushed out by the inert gas, and The active gas enters the storage space A. On the other hand, as the inert gas is injected into the storage space A, the liquid 5 in the exhaust pipe 7 is stored in the storage space A.
The air is pushed out, and the air is discharged to the outside, so that the inside of the storage space A is gradually replaced with the inert gas.

As is apparent from the above, the outer end 602 of the air supply pipe 6 and the inner end 701 of the exhaust pipe 7 are gas inlets and are exposed from the liquid 5, and the inner end 601 of the air supply pipe 6 is also exposed.
The outer end 702 of the exhaust pipe 7 is a gas outlet and is immersed in the liquid 5.

When the injection of the inert gas from the air supply pipe 6 is completed, the inside of the air supply pipe 6 and the air supply pipe 7 are filled with the liquid 5 again, so that the inside and the outside of the lid body 2 are completely shut off, and the device The storage space A becomes an atmosphere of an inert gas, and this is maintained. That is, since the liquid 5 that has flowed into the air supply pipe 6 and the exhaust pipe 7 functions as a shutoff cock, a means (the above shutoff cock) for shutting off communication with the air supply pipe 6 and the exhaust pipe 7 is required. do not do. Further, unlike the embodiment shown in FIG. 2, it is not necessary to remove the air supply pipe 6 and the exhaust pipe 7 after the gas replacement work in the storage space A.

The two other embodiments described above can be implemented simultaneously, not to mention individually. That is, it may be a closed container in which the container 4 shown in FIG. 3 and the lid 2 to which the air supply pipe 6 and the exhaust pipe 7 are fixed as shown in FIG. 5 are combined.

When the closed container according to the present invention is used in a liquid environment, the liquid 5 with which the container 4 is filled has a specific gravity that is heavier than that of the surrounding liquid.

Further, the closed container according to the present invention can be used, for example, in the case where a sample during an experiment is shielded from the outside air and stored for a long time. That is, the sample may be placed in the storage space A and the storage space A may be replaced with an inert gas atmosphere in accordance with the work procedure. Further, in this case, since it is expected that the closed container is often placed in an environment of normal air, the lid 2 and the container 4 are not required to have high corrosion resistance.

〔The invention's effect〕

As described above in detail, according to the present invention, a saucer-shaped container is filled with a non-volatile liquid, the non-volatile liquid is covered with a lid, and the internal space is used as a storage space for articles. An air supply pipe and an exhaust pipe for replacing the gas with other gas are provided in communication with the inside and outside of the lid, and have the following effects.

(A) With an extremely simple structure, the article can be shielded from the outside air,
Moreover, the airtightness can be maintained for a long time.

(B) When the article is various devices, the case itself of the various devices does not require a complicated sealing structure, and a sealant is applied or filled in a gap such as a joint or an opening / closing portion of the case. It does not require any work to do.

(C) After shutting off the article storage space from the outside air, the article storage space can be replaced with an atmosphere of a separate gas (for example, an inert gas), and the work is extremely easy.
And it can be done completely.

(D) When the articles are various devices, it is extremely easy to take out the articles from the closed container, store the articles in the closed container, and replace the gas in the article storage space. Maintenance work and inspection work can be easily performed at the operation site.

[Brief description of drawings]

The drawings all illustrate embodiments of the present invention.
FIG. 2 is an exploded perspective view, FIG. 2 is a sectional view, FIGS. 3 and 4 are partial perspective views and sectional views of another embodiment, and FIG. 5 is a sectional view of yet another embodiment. (Main symbols) 2 ... Lid, 4 ... Container 5 ... Nonvolatile liquid, 6 ... Air supply pipe 7 ... Exhaust pipe.

Claims (2)

[Claims] 1. A saucer-shaped container is covered with a lid body having an open bottom, and a space surrounded by the lid body and the container serves as a storage space for articles, and at least a boundary between the container and the lid body. A closed container having a portion filled with a non-volatile liquid, which has an air supply pipe and an exhaust pipe for replacing the air in the storage space with another gas, which communicates with the inside and outside of the lid. 2. The closed container according to claim 1, wherein the gas inlet of the air supply pipe and the exhaust pipe are exposed from the non-volatile liquid, and the gas outlet is immersed in the non-volatile liquid. A closed container shaped like