JPH08318578A - Wind pipe - Google Patents

Abstract

PURPOSE: To provide an easily disposable wind pipe constituted of a material capable of perfectly incinerating all of constitutional materials and generating no toxic gas. CONSTITUTION: A long cylindrical wind pipe main body 1 is produced from a combustible material not generating toxic gas by incineration such as polypropylene and rich in flexibility and constituted so as to be freely folded. A strip like channel 2 is produced from a combustible material generating no toxic gas by incineration such as soft polypropylene and spirally welded to the surface of the wind pipe main body 1 at a predetermined pitch by hot air. A rigid spiral line 3 is produced from a stretchable material generating no toxic gas by incineration such as rigid polypropylene and integrally molded to the channel 2 by thermal welding.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is intended to maintain a good working environment by exhausting harmful gases such as smoke filled in the working space shielded from the outside and sending fresh air to perform ventilation. Regarding the wind tube.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 2, a conventional wind tube has a wind tube main body 4 formed of a flexible vinyl chloride cloth in a foldable long tube shape. Rigid spiral hard steel wire 5 to maintain shape
Is integrally attached to the surface of the air duct main body by welding a vinyl chloride band-shaped channel 6 with hot air.

By the way, for example, a building of a nuclear power plant is divided into a plurality of blocks as a measure against radiation. Therefore, when working in each of these blocked buildings, in order to perform ventilation as environmental protection, A wind tube is used.

[0004]

However, since the air tube used in the building of a nuclear power plant is highly likely to be contaminated with radioactivity, it is incinerated after use.
The above-mentioned conventional air tube is made of flame-retardant material, and when it is incinerated, not only poisonous gas such as chlorine gas and hydrogen chloride is generated from the air tube body and channel made of vinyl chloride, but also spiral. Shaped steel wire remains without being incinerated,
The process was difficult.

The present invention has been made in order to solve the above-mentioned conventional problems, and an object of the present invention is to construct all the constituent materials from materials that can be completely incinerated and do not generate toxic gas. The purpose is to provide a windpipe that is easy to dispose of.

[0006]

SUMMARY OF THE INVENTION An air duct according to the present invention comprises an air duct body which is made of a highly flexible material and is formed into a long tubular shape, and a spiral shape integrally formed on the surface of the air duct body. In a wind tube consisting of a strip-shaped channel welded together and an expandable and rigid spiral wire integrally attached to the channel, the air tube body, the channel and the spiral wire are made of a combustible material. It is characterized by The air duct body is made of polypropylene cloth, the channels are made of soft polypropylene, and the spiral wire is made of hard polypropylene.

[0007]

An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a long tubular air tube body, which is made of a combustible material such as polypropylene that does not generate a toxic gas due to incineration, and is flexible and foldable.

Reference numeral 2 denotes a strip-shaped channel, which is made of a combustible material such as soft polypropylene that does not generate toxic gas due to incineration. The channels 2 are spirally welded to the surface of the air tube body 1 in a spiral shape with a predetermined pitch.

Reference numeral 3 is a rigid spiral wire, which is made of a material such as hard polypropylene that does not generate toxic gas due to incineration and is made expandable and contractible in a spiral shape. The spiral wire 3 is integrally formed with the channel 2 by heat welding or the like.

Since the air tube of this embodiment is made of the polypropylene material as described above, when it is used, the heat distortion temperature is about 104 ° C. and the melting point is as high as about 170 ° C. It can withstand sufficient use, burns well when burned, has almost no ash, and does not generate harmful gases such as hydrogen chloride, hydrogen bromide, sulfur oxides, and nitrogen oxides.

The wind pipe of the present invention is not only incinerated after being used in a place with radioactive contamination such as a nuclear power plant, but also in the incineration at the time of depreciation due to long-term use and measures against pollution by other harmful substances. Effective for disposal.

[0012]

【The invention's effect】

1) Since the air tube body, the channels, and the spiral rigid wire rods that make up the air tube are all made of combustible material, they can be completely incinerated. 2) By adopting polypropylene as the flammable material, it is possible to safely incinerate it without generating harmful gases such as hydrogen chloride, hydrogen bromide, sulfur oxides and nitrogen oxides.

[Brief description of drawings]

FIG. 1 is a side view (A) showing an embodiment of a wind tube of the present invention,
It is a partially expanded sectional view (B).

FIG. 2 is a side view (A) and a partially enlarged sectional view (B) of a conventional wind tube.

[Explanation of symbols] 1 Air tube body 2 Channel 3 Spiral wire

Claims (4)

[Claims] 1. A wind tube main body formed into a long tubular shape that can be folded with a highly flexible cloth, a band-shaped channel integrally welded spirally to the surface of the wind tube main body, In a wind tube composed of a stretchable and rigid spiral wire integrally attached to a channel, the wind tube main body,
A wind tube characterized in that the channel and spiral wire are made of a flammable material. 2. The air duct according to claim 1, wherein the air duct main body is made of polypropylene cloth. 3. The method according to claim 1, wherein the channel is made of soft polypropylene.
The wind tube described in. 4. The wind tube according to claim 1, 2 or 3, wherein the spiral wire is made of hard polypropylene.