JP2009261744A - Tube used for sprinkler piping - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly flexible tube which can be bent at a small radius of curvature so that its application will enable the sprinkler piping work to take a free and long route through or around the various kinds of other piping and wiring or articles installed on ceilings. <P>SOLUTION: The tube is a cylindrical woven fabric 2 consisting of a plurality of natural or synthetic fiber warps 3 arranged annually and wefts 4 woven helically to the warps 3. There is a water-tight lining 5 over at least the inner surface of the cylindrical woven fabric 2 where all or part of the wefts 4 are made up with a rigid linear material. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a pipe body for connecting between a sprinkler head and a fixed pipe that is fixedly disposed in a housing of a building in a sprinkler device.

  In many buildings, fire extinguishing agents such as water are automatically released when a fire breaks out, and sprinklers are installed as fire extinguishing equipment that suppresses the fire with local small-scale equipment by initial fire extinguishing.

  In many cases, a sprinkler device is provided with a sprinkler head on the ceiling of a building room, and pipes are provided on the back of the ceiling from fixed pipes fixedly arranged in the housing of the building to the sprinkler heads.

  In sprinkler devices, water pressure is normally applied to the piping by fire extinguishing agent, and the water pressure is shut off at the sprinkler head. When the heat of the fire is detected, the shutoff is released and the sprinkler head Extinguishing media is released.

  Therefore, since the water pressure is always applied to the pipe and left in a different state for a long time, it is required to have high pressure resistance and high durability without causing water leakage. Piping with steel pipes was performed.

  However, it is difficult to set the position of the fixed pipe and the position of the sprinkler head in the building strictly, and there are some errors, so it is difficult to form the pipe with a rigid pipe such as a steel pipe. It is.

  In addition, not only sprinkler pipes but also various wiring and pipes such as electric power, gas, water, and communication are mixed on the back of the ceiling that forms the pipes, and various equipment related to buildings are often installed. It is difficult to form a regular pipe.

  Because of this situation, after installing the fixed piping together with the frame construction and attaching the sprinkler head to the ceiling, various piping that can be freely piped between the fixed abandoned publication and the sprinkler head according to the situation of the back of the ceiling Materials have been proposed.

  For example, Japanese Patent Application Laid-Open No. 9-84895 and Japanese Patent Application Laid-Open No. 2002-295745 show a structure in which a bellows-like bendable portion is intermittently formed on a rigid tube body such as metal or plastic. Depending on the situation in the vicinity of the connection part with the piping and the sprinkler head, it is often impossible to connect smoothly.

Japanese Patent Application Laid-Open No. 2002-250481 describes a resin tube having a metal coating on a flexible resin tube such as cross-linked polyethylene. However, although the resin tube is flexible, it is large. Even if it can be smoothly bent with a radius of curvature, it is difficult to bend at a steep angle, and smooth joining may be difficult at the terminal.
Japanese Patent Laid-Open No. 9-84895 JP 2002-295745 A Japanese Patent Laid-Open No. 2002-250481

  The present invention has been made in view of such circumstances, and can be smoothly bent with a relatively small radius of curvature in a sprinkler pipe body, and the end of a fixed pipe and a sprinkler head can be easily and smoothly connected. An object of the present invention is to provide a tube that can be used.

  Thus, the present invention is a tubular woven fabric comprising a plurality of warp yarns arranged in a ring made of natural or synthetic fibers, and a weft yarn spirally woven with respect to the warp yarns. Alternatively, a water-tight lining is applied to at least the inner surface of a tubular woven fabric made of a linear material that is partially rigid. In the present invention, it is preferable to form a heat-resistant coating layer on the surface.

  According to the present invention, the tube body is flexible because it is made of a cylindrical woven fabric, and the weft yarn is made of a rigid linear material, so that it does not buckle and can be bent with a small radius of curvature. The piping between the sprinkler head is easy.

  The present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of the tubular body 1 of the present invention, FIG. 2 is a perspective view of the tubular woven fabric 2 in the tubular body 1 of the present invention, and FIG. It is a center longitudinal cross-sectional view.

  As shown in FIG. 2, the tubular woven fabric 2 is a tubular woven fabric including a plurality of warp yarns 3 arranged in an annular shape and a weft yarn 4 woven in a spiral shape with respect to the warp yarns 3. As the warp yarn 3 of the tubular woven fabric 2, a spun yarn or a multifilament yarn made of normal natural or synthetic fiber is used.

  A rigid linear material is used as the weft 4 woven into the warp 3. As such a rigid linear material, it is appropriate to use a metal wire or a monofilament of synthetic fiber.

  A watertight lining 5 is provided on at least the inner surface of the tubular woven fabric 2. The lining 5 is necessary at least on the inner surface of the tubular woven fabric 2, but a similar coating layer can also be formed on the outer surface of the tubular woven fabric 2. Moreover, it is preferable to form a heat-resistant film on the outermost surface of the tube body 1, and the coating layer can be made heat-resistant.

  Further, the weft yarn 4 in the tubular woven fabric 2 may be a rigid linear material as shown in FIG. 3, but the weft yarn 4a made of a rigid linear material as shown in FIG. Ordinary natural or synthetic fiber spun yarns or weft yarns 4b made of multifilament yarns may be used alternately or in a predetermined arrangement.

  FIG. 5 shows a usage state of the pipe body 1 of the present invention, and is a conceptual diagram of sprinkler piping on the ceiling of a building. A fixed pipe 7 protrudes from the wall surface 6 of the casing in the back of the ceiling, and a distribution pipe 8 is attached to the tip of the fixed pipe 7. Reference numeral 9 denotes a sprinkler head attached to the ceiling, and the distribution pipe 8 and the sprinkler head 9 are connected by the pipe body 1 of the present invention.

  According to the present invention, the tubular body 1 is mainly composed of the tubular woven fabric 2, and the tubular woven fabric 2 has a structure in which fibers are woven, so that it is extremely flexible and has a small radius of curvature. It is possible to bend, and it is possible to route by various routes by bypassing various pipes / wirings behind the ceiling and various installed items.

  In addition, since the tubular body 1 of the present invention is mainly composed of the tubular woven fabric 2, it has a high strength and a high pressure resistance, and can maintain the performance for a long period of time even when water pressure is always applied. . Further, since all or part of the weft 4 is made of a rigid linear material, the sprinkler head 9 can be reliably supplied with water without being crushed by an external force, and the flexibility is not hindered.

  Since the sprinkler pipe is a pipe for discharging the extinguishing agent from the sprinkler head 9 in the event of a fire, avoid the situation where the pipe body 1 is damaged by the heat of the fire and the extinguishing agent cannot be supplied to the sprinkler head 9. There must be.

  By forming a heat-resistant coating layer on the surface of the tube body 1, the heat resistance of the tube body 1 is improved, and the release of the fire extinguishing agent can be ensured by delaying damage due to heat. Various heat-resistant materials are known as the material for the film layer, and can be formed by coating or coating these materials.

Cross-sectional view of the tube of the present invention Perspective view of a tubular woven fabric constituting a tubular body Central longitudinal sectional view of a part of the tubular woven fabric Some central longitudinal sectional views of another example of the tubular woven fabric The perspective view which shows the use condition of the tubular body of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tubing body 2 Tubular woven cloth 3 Warp thread 4 Weft thread 5 Liner

Claims (2)

A tubular woven fabric comprising a plurality of warps (3) arranged in a ring made of natural or synthetic fibers and a weft thread (4) spirally woven into the warp threads (3), wherein the weft thread A sprinkler pipe body, characterized in that a water-tight lining (5) is applied to at least the inner surface of a tubular woven fabric (2), all or part of (4) being made of a rigid linear material. The sprinkler pipe body according to claim 1, wherein a heat-resistant film layer is formed on a surface of the sprinkler pipe body (1).

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