JPS6128557Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an exposed insulated pipe.

As shown in FIG. 1, a conventional heat-insulating pipe for exposed piping is constructed by fitting a heat-insulating material 2 on the outer circumferential surface of a pipe body 1, and wrapping a base paper 3 and an exterior tape 4 around the outer circumferential surface of the heat-insulating material 2. , apply coating 5 to the surface of this exterior tape 4,
Furthermore, wrap the cosmetic hardware 6 over this and band 7.
It was fixed in place. However, in this type of pipe, the wall thickness of the decorative metal fittings 6 is thin and corrodes quickly, and the water-stopping property is poor, so there is a problem that the life of the insulating pipe is short. In addition, there are many components and these must be assembled by hand, which causes many problems in manufacturing and requires skill in the assembly work.

In view of the above points, the present invention provides a heat insulating pipe which is excellent in durability and easy to manufacture.One embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 2 and 3, 8 is a pipe made of steel pipe, steel pipe, synthetic resin pipe, etc., and the pipe body 8 is equipped with a cylindrical heat insulating material made of calcium silicate, rock wool, glass wool, styrofoam, etc. 9 is fitted externally. This insulation material 9 is
It is divided into multiple parts in the axial direction and two parts in the circumferential direction, for example, an aluminum band (not shown).
It is attached to the outer circumferential surface of the tubular body 8 by, etc. A penetration prevention layer 10 is formed on the outer peripheral surface of the heat insulating material 9, and a synthetic resin layer 11 mixed with a glass fiber material (not shown) is formed on the outer peripheral surface of the penetration prevention layer 10. There is. The penetration prevention layer 1
0 is made of glass cloth or polyethylene film, and is wound around the outer peripheral surface of the heat insulating material 9. The synthetic resin layer 10 is made of polyester or the like mixed with a large number of very short glass fibers, and is constructed by spraying it onto the outer peripheral surface of the penetration prevention layer 10. During this spraying,
The penetration prevention layer 10 prevents the synthetic resin layer 11 from penetrating into the heat insulating material 9 and improves the adhesion of the synthetic resin layer 11.

In the heat insulating pipe having the above structure, the heat insulating material 9 is protected by the synthetic resin layer 11 having excellent water-stopping properties, so there is no fear that the heat insulating performance of the heat insulating material 9 will deteriorate due to intrusion of rainwater etc. from the outside. Moreover, the synthetic resin layer 11 has no fear of corrosion and has high strength because it contains glass fiber. Therefore, the heat insulating pipe having the above structure has excellent durability and can maintain its initial heat insulating performance over a long period of time. Also, insulation material 9
A synthetic resin layer 1 is placed on the outer peripheral surface of the
1, it can be manufactured manually in a short time and can be easily automated. Further, since the penetration prevention layer 10 is provided, there is no fear that the synthetic resin layer 11 will penetrate into the heat insulating material 9 during manufacturing and deteriorate the heat insulating performance.

In the above embodiment, an example was explained in which the molded heat insulating material 9 was attached to the outer circumferential surface of the tube body 8, but the heat insulating material 9 could be formed by, for example, spraying foamed urethane or the like onto the outer circumferential surface of the tube body 8. You may.

Further, in the above embodiment, an example in which the synthetic resin layer 11 is formed by spraying has been described, but the synthetic resin layer 11 may be formed by other means such as adhesive cement.

As explained above, according to the insulated pipe according to the present invention, the insulating material is protected by a synthetic resin layer mixed with strong glass fiber that has excellent water-stopping properties and corrosion resistance, and therefore has excellent durability. , the initial insulation performance can be maintained for a long period of time. In addition, a penetration prevention layer is provided between the insulation material and the synthetic resin layer mixed with glass fiber material to prevent penetration of the synthetic resin, so when the insulation pipe is manufactured, the synthetic resin layer penetrates into the insulation material and provides insulation. Stable and good heat insulation can be obtained without deteriorating performance.

[Brief explanation of the drawing]

Fig. 1 is a partial sectional view of a conventional heat-insulating pipe, Figs. 2 and 3 show an embodiment of the present invention, Fig. 2 is a sectional view cut along the axial direction, and Fig. 3 is a diametrical FIG. 3 is a cross-sectional view taken along the direction. 8... Pipe body, 9... Heat insulating material, 10... Penetration prevention layer, 11... Synthetic resin layer.

Claims (1)

[Scope of utility model registration request] A pipe body, a heat insulating material fitted onto the pipe body, a seepage prevention layer formed on the outer circumferential surface of this heat insulating material to prevent penetration of synthetic resin, and glass fibers formed on the outer circumferential surface of this seepage prevention layer. A heat insulating pipe characterized by having a synthetic resin layer mixed with a material.