JPH08285986A - Glove port for glove box - Google Patents

Abstract

PURPOSE: To make a safe and simple glove-exchange possible by a constitution in which rear end part of a glove is inserted into the inside of an inner ring and outwardly turned down at the rear end part of the inner ring, and the turned down part is fixed on the circumferential face of the inner ring. CONSTITUTION: After the base part of a glove 4 for operation which is inserted into the inside of an inner ring 3 and drawn out rearward is turned down outward of the ring 3 only in proper length, the turned-down part is fixed on the ring 3 by a resilient annular locking tool such as an O-ring. A packing 6 attached to the outside of the ring 3 prevents radioactive substance from being leaked from a gap between the ring 3 and a glove port 2. In the case of glove exchange, if the edge part of the ring 3 attaching a new glove abuts to the rear part of the installed ring 3 and a new ring 3 is enforcedly pressure- inserted up to the inside specified position of the port 2 by a previously prepared exchange tool 7, an old ring 3 will be pushed out in a glove box 1 and glove exchange will be performed safely and simply.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glove port for a glove box used in nuclear facilities and the like, and more particularly to a glove port excellent in replacement means.

[0002]

2. Description of the Related Art It is well known that when a radioactive material is handled in a nuclear facility, the handling operation is performed using a glove box.

A glove port for attaching an operating glove is fixed to the glove box. The root part of the operating glove is airtightly attached to this glove port so that the tip of the glove is inserted into the glove box. I am configuring.

When the glove attached to the glove port is consumed in this way, or when a part of the glove is cracked or otherwise damaged, it is necessary to replace the glove promptly to maintain safety. is there.

As a means for exchanging the glove attached to the glove port, the applicant of the present invention has published a Japanese Patent Publication No.
The method of exchanging gloves described in Japanese Patent Publication No. 34958 has been developed.

In the glove replacement method disclosed in the above publication, a glove port a and a glove c whose base end is fixed to an inner ring b are separately configured as shown in FIG. It is a method of press-fitting the inner ring b having the base portion of the inside fixed to the inside of the glove port a (inside the cylindrical body forming the glove port a) to hermetically fix the both, and it is consumed and other reasons. When it becomes necessary to replace the glove c, a new inner ring b ′ with a new glove c ′ is forcibly pressed in from the rear of the existing inner ring b to insert the new inner ring b ′. In this method, the existing inner ring b is pushed out into the glove box in an interlocking manner to replace the glove.

[0007]

However, in the above-mentioned conventional glove exchanging method, the existing glove c and the new glove c'have inner rings b,
Since it is attached so as to cover the outside of b ', the new glove c'contacting the tip of the new inner ring b'when the glove is replaced, the rear end of the existing inner ring b and the tip of the new inner ring b'. It is necessary to avoid damage caused by press fitting while being sandwiched with strong pressure between the parts.

Further, there is a problem that the cuff portion of the globe c attached to the inner ring b (attachment portion with the inner ring) is located inside the globe port and is difficult to inspect from the outside.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances and is intended to address these problems. By changing the structure for attaching the glove to the inner ring, the new glove is not damaged when the glove is replaced. It is intended to provide a glove port for a glove box configured so that the glove can be exchanged extremely safely.

Another object of the present invention is to provide a glove port for a glove box in which radioactive material is not scattered during glove replacement, glove replacement can be performed very safely, and glove replacement means is extremely simple. It is the one we are trying to provide.

[0011]

The present invention has a structure comprising a glove port, an inner ring detachably attached to the inside of the glove port, and an operating glove attached to the inner ring, wherein the rear end of the operating glove is an inner ring. The glove box structure for a glove box, which is inserted through the inside, is folded back to the outside at the rear end of the inner ring, and the folded portion is fixed to the outer peripheral surface of the inner ring, is the gist of the invention.

[0012]

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

FIG. 1 is a longitudinal sectional view showing an operation process for exchanging a new glove, FIG. 2 is a longitudinal sectional view showing a structure of a glove port after exchanging a new glove, and FIG. 3 is a conventional glove exchanging method. It is a longitudinal section showing the operation process shown.

2 is a glove box 1 having a closed structure.
The glove port is formed at an appropriate position, and the inner ring 3 is airtightly attached inside thereof.

Reference numeral 4 denotes an operation glove whose base end is attached to the outer periphery of the rear end of the inner ring 3 by an appropriate length. The operation glove 4 is inserted through the inner ring 3 and pulled out rearward. Inner ring 3 with appropriate length
After being folded back to the outside, the folded portion is fixed to the inner ring 3 via an O-ring and other annular locking members 5 ... 5 having elasticity.

Reference numeral 6 in the drawing denotes a packing attached to the outer side of the inner ring 3 for preventing the radioactive substance from leaking from the gap between the inner ring 3 and the glove port 2.

The novel globe exchange in the present invention having the above structure can be performed by the same means as the conventional globe exchange method. That is, when a new glove is replaced, as shown schematically in FIG. 1, the tip of the inner ring 3 having a new glove attached is brought into contact with the rear of the existing inner ring 3 and prepared in advance. If the new inner ring 3 is forcibly pressed into a predetermined position inside the glove port 1 by the replacement tool 7, the existing glove port 3 is pushed into the glove box 1 and the glove exchange can be completed easily.

Reference numeral 8 in the figure denotes an inner ring retracting prevention ring attached to the rear end portion of the inner ring 3, which prevents the inner ring 3 from being retracted into the glove box 1 in a negative pressure state.

[0019]

As described above, the present invention provides the operating glove 4 as described above.
Since it is attached so that it is located inside the inner ring 3, and only the rear end of the glove is folded back to the outside of the inner ring 3 and then fixed, a new glove 4 can be used when replacing the glove like a conventional glove port. It has the effect of being able to exhibit excellent safety by completely avoiding the unexpected situation of being damaged by being sandwiched between the end faces of the old and new inner rings 3, 3.

In the glove port of the present invention, the base end of the operating glove 4 is wound around the rear end of the inner ring 3 exposed to the rear of the glove port 2, so that the glove cuff can be visually inspected. Since it can be easily done, even if the cuff part is damaged, it can be easily found, and there is an excellent effect that the risk of the equipment being polluted by radioactive substances can be avoided.

Further, according to the present invention, the annular locking members 5 ... 5 for fixing the base end portion of the operating globe 4 to the inner ring 3 are not exposed to the atmosphere in the glove box. Therefore, it is possible to use an inexpensive dry O-ring, and it is economical because it is not necessary to use an expensive wet O-ring as in the past.

Further, after the glove work is completed, when the operation glove is pulled out of the glove box and tied, the end of the inner ring is not bent and does not come into contact with the glove box. There is an advantage that the deterioration rate can be expected to slow down.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a glove port showing a glove replacement means of the present invention.

FIG. 2 is a vertical cross-sectional view of the glove port after the glove is replaced.

FIG. 3 is a vertical sectional view of a glove port showing a conventional glove replacement method.

[Explanation of symbols]

 1 Glove box 2 Glove port 3 Inner ring 4 Glove for operation 5 Ring stopper 6 Packing 7 Replacement tool

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Mamoru Kunii 25 Kanda Toyama-cho, Chiyoda-ku, Tokyo Inside Kokugo Co., Ltd.

Claims (1)

[Claims] 1. A structure comprising a glove port, an inner ring detachably attached to the inside of the glove port, and an operation glove attached to the inner ring, wherein a rear end portion of the operation glove is inserted through the inner ring. A glove port for a glove box that is folded back to the outside at the rear end of the inner ring and is fixed to the outer peripheral surface of the inner ring.