JPH0743271A - Sealing jig for sample container in moisture measurement - Google Patents

Abstract

PURPOSE:To close the opening of a sample container containing a sample correctly with a thin sheet cover and to seal the opening hermetically. CONSTITUTION:The sealing jig comprises a jig body 21 for receiving the body part of a sample container 11 in the inner space 23 through the upper opening 22 while exposing the upper part including the opening to the outside, and a jig cover 30 for receiving a thin sheet cover piece 13 in the inner retaining space of cover body while touching the face of a previously applied inner packing 40 with the tongue part of the cover piece protruding outward from a groove 35 in the side face. The retaining space 33 is pressure fitted onto the upper opening exposed to the outside of the sample container 11 thus hermetically sealing the peripheral part of the opening with the thin sheet cover piece 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig for sealing a sample container in measuring water content, and more particularly, to heating a sample to be measured contained in the sample container to vaporize the water content and to be contained in the sample. The present invention relates to a jig for sealing a sample container, which is applied to carry out the Karl Fischer water content determination method for measuring the water content.

[0002]

2. Description of the Related Art Generally, in a moisture measuring apparatus using the Karl Fischer moisture determination method, a sample to be measured is stored in a dry-purged sample container, and the inside of the sample container is connected to a measuring section. Then, this is heated from the outside to vaporize the moisture, and the vaporized moisture is introduced into the measurement section by the carrier gas to measure the amount of the moisture.

That is, in the case of this type of conventional moisture measuring apparatus, for example, as disclosed in Japanese Patent Laid-Open No. 1-216226, the sample to be measured is stored in a sample container which has been previously dry-purged. At the same time, the opening is hermetically sealed by the cover of the lid member, and with respect to the sample container in which the sample to be measured is hermetically stored under the dry purge in this way, the lid member is removed and opened immediately before the heating vaporization process. And, the opened sample container is moved to the measurement position of the device, and again sealed by the interposition of the O-ring, and thereafter,
The operation is processed and measured as described above.

However, in the above-mentioned conventional moisture measuring apparatus, in the measurement using the sample container in which the sample to be measured is stored, first, the lid member is removed immediately before the heating and vaporizing treatment, and the lid is once opened. Since it is moved to the measurement position and sealed again, the inside of the sample container in which the sample to be measured is hermetically stored under the dry purge should be opened once and then sealed again. In the meantime, even if it is a small amount, moisture invades from the ambient atmosphere, and the moisture content of the sample to be measured cannot be measured accurately and exactly. It has a fatal defect.

Therefore, the present inventors have previously proposed the following means for sealing and sealing the sample container.

[0006] That is, in the proposed new means, a thin film sheet-like lid piece that is incapable of infiltration of moisture from the outside is used to store the sample to be measured in the sample container under dry purge and to open the sample container. The thin film sheet-like lid piece is adhesively sealed to the part to be closed and sealed. According to the sample container configured as described above, when the moisture content of the sample to be measured is measured, the thin film sheet-like By directly piercing the lid piece with a communication needle or the like from the outside, the vaporized water of the sample to be measured can be easily taken out to the measurement section through the communication needle without opening the sample container again. it can.

[0007]

On the other hand, in the means for sealing and sealing the opening of the sample container with the aluminum sheet piece proposed by the present inventors, the area of the opening of the sample container is relatively small and is used. Regarding the aluminum sheet piece that is also used, it has a size that imitates the area of the opening, and it is relatively thin due to the need to directly pierce a communication needle or the like. Therefore, it is not always easy to handle it because it is not possible to directly attach water, and the storage of the sample to be measured in the sample container and the sealing of the opening with the aluminum sheet piece are sealed. Because it is done under dry purge,
Here, the sealing of the lid by the adhesive seal of the aluminum sheet piece to the opening of the sample container is extremely troublesome.

The present invention has been made in order to solve such a problem, and its object is to use a sample container which is hermetically sealed with a thin film sheet-like lid piece. A device for measuring the water content of a sample to be measured by the Karl Fischer moisture determination method, in which the opening of the sample container that receives the sample to be measured is closed easily, easily and accurately with a thin film sheet lid. The object is to provide a jig for sealing a sample container in this type of moisture measurement, which can be sealed with a lid.

[0009]

In order to achieve the above object, a jig for sealing a sample container in moisture measurement according to the present invention has an opening edge portion including an opening part of a sample container body containing a sample to be measured. Using a sample container obtained by hermetically sealing and sealing with a thin film sheet lid with a tongue piece, the sample container is received in a moisture measuring operation device, and a thin sheet sheet lid of the sample container is provided with a gas introduction needle. In a state where the vaporized moisture derivation needle is pierced, after heating the sample to be measured from the outside to vaporize the contained moisture, the carrier gas introduced from the gas introduction needle vaporizes the vaporized moisture derivation needle. It is a sealing jig that is applied to moisture measurement so as to derive moisture, and that adheres the thin film sheet lid piece to the opening edge portion including the opening portion of the sample container body for hermetic sealing. Open the sample container And a tongue of the thin film sheet-like lid piece, and a jig body for accommodating a container body that receives the body part of the sample container body into the accommodating space inside the body from the upper opening with the upper part including the part exposed to the outside. A jig for holding a thin film sheet-like lid piece, which receives the thin film sheet-like lid piece in contact with an internal packing surface pre-installed in the holding space inside the lid body in a state in which the piece portion is projected to the outside from the side opening groove. A holding space for the jig lid is press-fitted onto the upper opening exposed to the outside of the sample container body that is configured by a lid and is received in the storage space of the jig body. It is characterized in that a thin film sheet-like lid piece can be tightly sealed at an opening edge portion including an opening portion of the sample container body.

[0010]

Therefore, in the jig for sealing the sample container according to the present invention, the jig lid body is held against the upper opening exposed to the outside of the sample container body received in the accommodation space of the jig body. By simply pressing the space,
The thin film sheet-like lid piece is pressed against the opening edge portion including the opening of the sample container body, whereby the opening edge portion including the opening portion of the sample container body is tightly sealed with the thin film sheet-like lid piece.

[0011]

EXAMPLE An example of a jig for sealing a sample container according to the present invention will be described in detail below with reference to FIGS.

1 (a) and 1 (b) show a sample container in which a sample to be measured in a moisture measuring apparatus according to the present invention is stored and sealed, and a gas for a sealing thin film sheet-like lid piece of the sample container. It is each cross-sectional explanatory drawing which shows the penetration state of the introduction needle and the vaporized water extraction needle, respectively.

FIG. 2 is a longitudinal sectional view showing a schematic structure of a jig for sealing a sample container to which an embodiment of the present invention is applied, in which a jig body and a jig lid are combined.
[Fig. 4] is a transverse cross-sectional view showing a main part configuration of the same jig lid.

First, in FIGS. 1A and 1B, as the sample container 10 according to this example, a heat-resistant sample container body 11 having an opening 11a is used.
A sample to be measured 12 is stored in the container in a state where the inside of the container 1 is dry-purged, and a tongue piece portion 13a in which moisture or the like from the outside cannot enter the opening edge portion 11b including the opening portion 11a. Thin film sheet-like lid piece 13, for example,
By adhering aluminum foil film sheet pieces,
Use one that is hermetically sealed over the entire surface.

Thus, the sample container 1 thus constructed
No. 0 directly penetrates the thin film sheet-like lid piece 13 that hermetically seals the opening 11a with the gas introduction needle 5 and the vaporized moisture derivation needle 6 provided in the moisture measurement operation device, and the inside of the container The measured sample 12 stored in the above is externally controlled and heated to vaporize the water content, and the detailed description of the measuring action is omitted here, but the carrier gas supplied from the gas introduction needle 5 is used. , The vaporized water derivation needle 6 for the vaporized moisture of the sample to be measured 12 vaporized inside the container
Then, the water content is measured.

Next, referring to FIGS. 2 and 3, the jig for sealing the sample container according to the present embodiment is a container housing jig 20.
And a jig 30 for holding a thin film sheet lid piece.

That is, the container body accommodating jig 20 is composed of a jig body 21 having an accommodating space 23 having an opening 22 at the top thereof, and the jig body 21 is provided with the sample container body. The main body of the sample container body 11 is received from the upper opening 22 into the storage space 23 inside the main body in a state where the upper portion including the opening 11a of 11 is exposed to the outside.

Further, the jig 3 for holding the thin film sheet lid piece
Reference numeral 0 denotes a jig lid having a holding space 33 having an opening 32 at the bottom, an internal packing 40 interposed between the holding space 33 and the upper opening space 34, and a side opening groove 35 cut out in the holding space 33. The jig lid 3 is composed of a body 31.
1 shows an internal packing 40 in which the tongue piece 13a of the thin film sheet-like lid piece 13 is held in a fingertip while the thin film sheet-like lid piece 13 is housed in a holding space 33 inside the lid body.
The tongue 1 by contacting the lower surface of the
3a is held in a state of being protruded from the side surface opening groove 35 to the outside.

In this case, the tongue piece 13 is thus formed.
In handling the thin film sheet-like lid piece 13 while holding a at the fingertip, the thin film sheet-like lid piece 13 does not directly touch the thin film sheet-like lid piece 13.
3. Adhesion of water to 3; in other words, thin film sheet-like lid piece 13
The fear of bringing in moisture from the outside when handling is completely eliminated, and as a result, accurate moisture measurement becomes possible.

Therefore, as described above, the container body storage jig 20 which has received the main body of the sample container body 11 in the storage space 23, and the thin film sheet-like lid piece 13 are internally packed 40 in the storage space 33. The sealing operation using the jig 30 for holding the thin film sheet lid piece received in contact with the lower surface of is carried out as follows.

That is, for holding the thin film sheet lid piece on the upper opening 11a exposed to the outside of the sample container 11 received in the storage space 23 of the container storage jig 20. The holding space 33 of the jig 30 is press-fitted so that the opening edge portion 11b including the opening portion 11a is included.
On the other hand, the thin film sheet-like lid piece 13 is in close contact with this, and in this state, for example, it can be easily hermetically sealed by heating from the outside or the like.

[0022]

As described above in detail with reference to the embodiments, according to the present invention, the opening edge portion including the opening portion of the sample container body containing the sample to be measured is a thin film sheet-like lid piece with a tongue piece portion. Using a sample container that is hermetically sealed with a lid, receives the sample container in the moisture measuring operation device, and in the state where the gas introducing needle and the vaporized moisture deriving needle are pierced through the thin film sheet-like lid piece of the sample container, After heating the measurement sample from the outside to evaporate the water content, by the carrier gas introduced from the gas introduction needle,
For sealing, which is applied to the measurement of water content by extracting the vaporized water content from the vaporized water content extraction needle, and adheres the thin film sheet lid piece to the edge of the sample container, including the opening, to form a hermetic seal. A jig body for accommodating a container body that receives a body portion of the sample container body into a storage space inside the body from the upper opening in a state where an upper portion including an opening portion of the sample container body is exposed to the outside. A thin film sheet which receives the thin film sheet lid piece in contact with an internal packing surface pre-installed in a holding space inside the lid body in a state where the tongue portion of the thin film sheet lid piece is projected to the outside from the side opening groove. Since it is configured with the jig lid for holding the lid-shaped lid piece, the jig lid holding space is provided on the upper opening exposed to the outside of the sample container body received in the storage space of the jig body. Is it extremely easy to just press fit? With a simple operation, the thin film sheet-like lid piece can be pressed against the opening edge portion including the opening portion of the sample container body, whereby the thin film sheet-like lid piece can be pressed against the opening edge portion including the target sample container body opening portion It has an excellent feature that it can be tightly sealed, and there is no fear of bringing in moisture from the outside when handling the thin film sheet-like lid piece, resulting in accurate moisture measurement.

[Brief description of drawings]

1 (a) and 1 (b) are a sample container in which a sample to be measured in a moisture measuring apparatus according to an example of the present invention is stored and sealed, and gas is introduced into a sealing thin film sheet-like lid piece of the sample container. It is each cross-sectional explanatory view which shows the piercing state of a needle and a vaporized water extraction needle, respectively.

FIG. 2 is a vertical cross-sectional view showing a schematic configuration in a state in which a jig body and a jig lid are combined in a jig for sealing a sample container to which an embodiment of the present invention is applied.

FIG. 3 is a transverse cross-sectional view showing a main part configuration of the same jig lid body.

[Explanation of symbols]

 5 Gas introduction needle 6 Evaporated water extraction needle 10 Sample container 11 Heat-resistant sample container body 11a Opening portion of sample container body 11b Opening edge portion of sample container body 12 Measured sample 13 Thin film sheet lid piece 13a Tongue piece portion 20 Container Body storage jig 21 Jig body 22 Upper opening 23 Storage space 30 Thin film sheet lid piece holding jig 31 Jig lid 32 Lower opening 33 Holding space 34 Upper open space 35 Side opening groove 40 Internal packing

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akiyoshi Nozawa Sanboshi Kasei Co., Ltd. Research Institute, 1000, Kamoshida-cho, Midori-ku, Yokohama-shi, Kanagawa

Claims (1)

[Claims] 1. A sample container obtained by sealing and sealing an opening edge portion including an opening of a sample container body accommodating a sample to be measured with a thin film sheet-like lid piece having a tongue piece. The sample to be measured is externally heated to vaporize the moisture contained in the sample container, while the thin film sheet-like lid of the sample container is pierced with the gas introduction needle and the vaporized moisture extraction needle. After that, the carrier gas introduced from the gas introduction needle is applied to moisture measurement so that the vaporized moisture is derived from the vaporized moisture derivation needle, with respect to the opening edge portion including the opening of the sample container body. A sealing jig for adhering the thin film sheet-like lid piece for a hermetic seal, and storing the inside of the main body from the upper opening with the upper part including the opening of the sample container body exposed to the outside. The body of the sample container body in the space A jig body for a container body accommodating accept,
A thin film sheet for receiving the thin film sheet lid piece in contact with an internal packing surface pre-installed in the holding space inside the lid body in a state where the tongue portion of the thin film sheet lid piece is projected to the outside from the side opening groove. And a jig lid for holding the jig-shaped lid piece, and the holding space for holding the jig lid on the upper opening exposed to the outside of the sample container body received in the storage space of the jig body. Is attached by pressurizing, and a thin film sheet-like lid piece can be tightly sealed to an opening edge portion including an opening portion of the sample container body, and a jig for sealing a sample container in moisture measurement.