JP2756774B2 - Pipe insulation support made of high-density polystyrene foam - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe heat insulating support used for supporting a cold water pipe, a cold / hot water pipe, a water supply pipe, a brine pipe, and a refrigerant pipe (hereinafter, referred to as cold / hot / cold water pipe).

[0002]

2. Description of the Related Art In general, various heat insulating materials are used for cold water / hot / cold water pipes having a particularly low fluid temperature in order to prevent dew condensation on the surface and to insulate the surface. JIS because the required thickness of heat insulating material can be reduced
A9511-1995 "Bubble method polystyrene foam heat retaining cylinder No. 3" in "foamed plastic heat insulating material" is most widely used.

FIGS. 9 and 10 show the structure of a general heat insulating tube made of polystyrene foam (styrene foam) and a general pipe heat insulating support using a hard urethane ring (insulation sleeper). In order to fix the cold / hot / cold water pipe 80 to the frame 81 on the building side, such a pipe heat insulating support 82 is required. As is clear from the figure, since the portion of the heat insulating support is tightened by the U-shaped bolt 84, the standard polystyrene foam having a compressive strength of about 2 kgf / cm ² is insufficient in strength and breaks. However, hard urethane of about 50 kgf / cm ² is used.

In FIG. 9, first, at the position of the heat insulating support,
A hard urethane ring 83 is attached to the outer periphery of the pipe 80 so as to be fitted from above and below, and is fastened to the frame 81 by a U-shaped bolt 84 and a nut 85. Next, adjacent to the front and rear of the urethane ring 83, a heat insulation cylinder 86 made of polystyrene foam,
87 is attached.

[0005] As shown in FIG. 10A, after these members 83, 86, and 87 having heat insulating performance are bound together by a wire or an adhesive so as to come into close contact, various types of waterproofing are provided over the entire outer periphery of these members. Paper or a waterproof film 90 is wound.

However, when the waterproof film 90 is wound around the heat retaining tubes 86 and 87 and the urethane ring 83 in the state as shown in FIG. 10A, the waterproof film 90 may be wound around the bottom of the urethane ring 83. Since it is impossible, the moisture-proof layer becomes discontinuous and a gap is formed, and water accumulates in the gap to form dew, which may cause a damage accident due to corrosion of the pipe. In particular, cold water / hot / cold water pipes expand and contract due to temperature changes during use.

FIG. 10B shows a hard urethane ring 83. The urethane ring 83 is divided into upper and lower halves so that the urethane ring 83 can be fitted with a cut 92, and a lower flat surface for sitting on the frame 81 is provided. A pedestal portion 93 is provided.
The pedestal portion 93 may hinder the winding of the waterproof film, thereby causing a gap.

[0008] Further, as described above, rigid urethane has sufficient strength, but its heat insulation performance is slightly inferior to polystyrene foam. Therefore, when a polystyrene foam having high heat insulation performance is used as a heat retaining cylinder, the heat insulation performance corresponding to this is required. Having one would be desirable.

Further, since the urethane ring 83 has such a shape, the manufacturing method is to cut out from a board having a constant thickness (generally 50 mm) or to inject a mold, and material loss occurs. As a result, the manufacturing cost increases and the product price increases. As shown in FIG. 10B, the one made of a heat insulating material up to the pedestal portion has a disadvantage that the material cost is further increased.

Japanese Utility Model Application Laid-Open No. 55-119492, "Non-combustible heat insulating support for high and low temperature piping" describes a U-shaped and a split ring-shaped support. Japanese Utility Model Application Laid-Open No. 58-24581 "Piping support device" describes a split type pipe support device. In Japanese Utility Model Laid-Open Publication No. 59-56476, "Insulation Support", a heat insulation support member using a synthetic resin foam is described.

[0011]

SUMMARY OF THE INVENTION It is a main object of the present invention to prevent dew condensation due to expansion and contraction of pipes and poor butting of pipe heat insulating materials, thereby preventing corrosion accidents caused by dew condensation. Another object of the present invention is to improve the heat insulating performance of a heat insulating support portion of a pipe. Still another object of the present invention is to reduce the material cost and the construction cost of the pipe heat insulating support.

[0012]

In order to solve the above-mentioned problems, the present invention uses the following method. (1) The density of polystyrene foam, which has been conventionally used as a heat insulating material for piping, is set to 100 kg, which is high in compressive strength and almost equal in thermal conductivity to the standard density.
/ M densified to about ^3, for use as a body of insulation support (2) high density polystyrene foam-made cylindrical member shape is substantially identical donut shape as the inner and outer diameter of the front and rear heat insulating cylinder (3) When the heat-insulating support is fixed on the frame on the building side, use the cradle. When it is hung from the ceiling on the building side, use a normally-used open / close clamp.

(4) Before being fixed by the clamp, the first moisture-proof material layer is wound around the entire outer periphery of the cylindrical member made of high-density polystyrene foam and mounted using an adhesive or the like. (5) First moisture-proof The layer should be at least larger than the width of the clamp, projecting laterally as much as possible from the high-density polystyrene foam cylindrical member, to facilitate the insertion of the front and rear heat retaining cylinders and to overlap the second moisture-proof layer. (6) Wind the second moisture-proof material layer from the outer periphery of the heat insulation cylinder to the outer periphery of the first moisture-proof material layer, and attach it using an adhesive or the like. (7) First and second moisture-proof material layers Is a polyethylene film (one kind of JIS Z1702 "polyethylene film for packaging") or a material having the same moisture-proof performance (aluminum foil, glass generally used as a pipe heat insulating material) A combination of cloth, molded paper, etc. and various moisture-proof films) or a film with moisture-proof performance

Thus, according to the present invention, there is provided a heat insulating support for a cold water pipe, a cold / hot water pipe, a water supply pipe, a brine pipe, and a refrigerant pipe, wherein the density is about 100 kg attached to the outer periphery of the pipe at the position of the heat insulating support. / M ³ high-density polystyrene foam cylindrical member, a first moisture-proof material layer on which a moisture-proof material is wound or a moisture-proof coating film is formed over the entire outer periphery of the cylindrical member, and a first moisture-proof material layer An arc-shaped clamp for gripping the outer periphery of the cylindrical member from above; a heat insulating cylinder made of standard density polystyrene foam, glass wool, or rock wool mounted adjacent to the front and rear of the cylindrical member; and an outer periphery of the heat insulating cylinder And a second moisture-proof material layer wound around the outer periphery of the first moisture-proof material layer, and the outer diameter and the inner diameter of the cylindrical member are made substantially equal to the outer diameter and the inner diameter of the heat retaining cylinder, respectively. Density Polystyrene foam pipe insulation support is provided.

The reason why the density of the polystyrene foam cylindrical member is set to about 100 kg / m ³ is as follows.
FIG. 8 is a graph in which the thermal conductivity was measured while changing the density of the polystyrene foam, and the measuring method was JIS A141.
2

As can be understood from this figure, when the density of the polystyrene foam is increased from the standard density of 25 kg / m ³ , the thermal conductivity decreases at first, and it becomes difficult to conduct heat. Turned to rise, density was about 100k
In the vicinity of g / m ³ , the thermal conductivity becomes almost the same level as when the density is 25 kg / m ³ . On the other hand, the compressive strength was about six times that of the standard density polystyrene foam, and it was found that the compressive strength was enough to withstand bolting. For this reason, in the present invention, the density of the polystyrene foam cylindrical member was set to about 100 kg / m ³ . The comparison of the properties of the heat insulating material related to the present invention is as follows.

[0017]

[Table 1] ──────────────────────────────── Polystyrene Polystyrene Urethane Cylindrical member Foam ring ───────密度 Density (kg / m ³ ) 100 25 300 Thermal conductivity (kcal / mh ° C) 0.031 0.032 0.046 Compressive strength (kgf / cm ² ) 12 250 mm

According to the present invention based on such a configuration, the first moisture-proof material layer is continuous also on the bottom surface of the heat-insulating support, so that dew condensation due to respiration with external air is prevented. It is possible to prevent the corrosion accident of the piping caused by the above.

Furthermore, by using a polystyrene foam cylindrical member having a lower thermal conductivity than a conventional urethane ring, the heat insulation performance can be improved. Further, since the polystyrene foam cylindrical member according to the present invention can be manufactured with a simpler shape than the conventional urethane ring and using an inexpensive material, it is possible to improve productivity and reduce the cost associated therewith. Advantages such as resource savings due to limited use can be obtained. Hereinafter, preferred embodiments according to the present invention will be described with reference to the accompanying drawings.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 and 2 show a preferred example of a pipe heat insulating support constructed in accordance with the present invention. It is used for fixing to the frame 21 on the building side.

According to the present invention, the pipe 1 is located at the position of the heat insulating support.
A cylindrical member 13 made of high-density polystyrene foam having a density of about 100 kg / m ³ is mounted on the outer periphery of the first member 1, and a first moisture-proof material layer 14 made of a transparent polyethylene film is wound around and bonded to the entire outer periphery of the cylindrical member 13. Layer 14
Are extended right and left beyond the edge of the cylindrical member 13. However, the moisture-proof material layer 14 can also be terminated to the edge of the cylindrical member 13. Because the width of the arc-shaped clamp 16 is smaller than the width of the cylindrical member 13 as shown in FIG. 2B, the second moisture-proof material layer 20 is wound over the first moisture-proof material layer 14. This is because only room is left.

With the first moisture-proof material layer 14 wound on the cylindrical member 13, as shown in FIG.
From the front and back, heat insulation tubes 18 and 19 made of standard density polystyrene foam are inserted in the lateral direction.

The heat insulating cylinders 18 and 19 are made of the first moisture-proof material layer 14.
Is inserted under the cylindrical member 13 and is brought into contact with the cylindrical member 13 in a series, the arc-shaped receiving base 15 is placed on the frame 21, the U-shaped clamp 16 is lowered from above, and the stud at the lower end thereof is lowered. With the bolt 16a and the nut 17,
The heat insulating support 10 is fastened and fixed on the frame 21.

Finally, first from the outer periphery of the heat retaining cylinders 18 and 19,
A second moisture-proof material layer 20 made of a polyethylene film or the like is wound around the outer periphery of the moisture-proof material layer 14, and a finishing operation is performed by a conventional method. As shown in FIG. 1, the second moisture-proof material layer 20 does not need to cover the entire surface of the first moisture-proof material layer 14, and may be in a state where the ends are overlapped.

Since the outer diameter and the inner diameter of the cylindrical member 13 are substantially equal to the outer diameter and the inner diameter of the heat retaining cylinders 18 and 19, the operation of winding the second moisture-proof material layer 20 can be easily performed. Can be.

As shown in FIG. 2B, the U-shaped clamp 16
Is set to be substantially equal to the width S of the receiving base 15, but smaller than the width W of the cylindrical member 13 made of high-density polystyrene foam. This is so that when the second moisture-proof material layer 20 is wound, it can be wound up to a position adjacent to the clamp 16.

FIGS. 3B, 3C, and 3D show the cylindrical member and the heat insulating cylinder in order to keep the cylindrical member 13 made of high-density polystyrene foam in contact with the heat insulating cylinders 18 and 19 made of standard density polystyrene foam. An example is shown in which uneven portions 31, 32, 33, and 34 are formed on the respective end surfaces of the two, and the two are fitted together by these uneven portions. The degree of tightness of the fit can be freely set.

FIGS. 4, 5 and 6 show a U-shaped clamp 16.
12 shows a modification of the receiving stand used in cooperation with the above.
FIG. 4 shows a receiving base 15 having a standard left and right protruding shape shown in FIG. 1, FIG. 5 shows a receiving base 55 in which both ends are wound so as to have elasticity, and FIG. A receiving base 65 in a loop shape that functions as a spacer without providing a hole is shown.

FIG. 7 shows a pipe insulation support according to the present invention.
This shows an example in which cold water / hot / cold water pipes and the like are hung from the ceiling of a building, and an arc-shaped clamp 76 is a pair of semicircular strips 76a and 76b that open and close like hinges.
Insulation supports are suspended from the ceiling on the building side. In this example, the receiving gantry as shown in FIG. 1 becomes unnecessary.

In the hanging type as shown in FIG.
The cylindrical member 13 and the first moisture-proof material layer 14 according to the present invention can be used in common with the upper type shown in FIG. This is also an advantage of the present invention.

[0031]

As described above in detail, according to the present invention, since the first moisture-proof material layer is continuous also on the bottom surface of the heat-insulating support, it is possible to prevent the formation of dew due to the respiration of external air. Therefore, it is possible to prevent a corrosion accident of the piping caused by this.

Further, by using a polystyrene foam cylindrical member having a small thermal conductivity, the heat insulating performance can be improved. In addition, since the polystyrene foam cylindrical member according to the present invention can be manufactured in a simple shape and at low cost, it is possible to improve productivity and reduce the cost associated therewith, and resource saving by using a minimum necessary amount of materials can be achieved. Will be possible. In addition, since the cylindrical member and the first moisture-proof material layer can be used in common for the overlaid type and the suspended type, the technical effects are extremely remarkable, such as the construction efficiency is remarkably improved. is there.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an entire pipe heat insulating support according to the present invention.

FIG. 2 is a cross-sectional view A and a side view B at a central portion of the heat insulating support.
It is.

FIG. 3 is a schematic cross-sectional view illustrating a state in which a heat retaining cylinder is inserted into a cylindrical member and a modified example.

FIG. 4 is a plan view A, a front view B, and a plan view C showing the structure of a receiving base.

5A and 5B are a front view A and a plan view B showing a modified example of the receiving gantry.

FIG. 6 is a front view A and a plan view B showing a modified example of the receiving gantry.

FIG. 7 is a front view A and a side view B showing a heat-insulating support when hanging a pipe.

FIG. 8 is a graph showing a change in thermal conductivity of a polystyrene foam.

FIG. 9 is a perspective view showing the structure of a conventional heat insulating support.

FIG. 10 is a side view A of a conventional heat insulating support and a front view B of a urethane ring.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Thermal insulation support 11 Piping 13 Cylindrical member 14 Moisture-proof material layer 15 Receiving stand 16 U-shaped clamp 18, 19 Heat insulation cylinder 20 Moisture-proof material layer

Claims (4)

(57) [Claims] 1. A heat insulating support for a cold water pipe, a cold / hot water pipe, a water supply pipe, a brine pipe, and a refrigerant pipe, wherein a density of about 100 is mounted around the pipe at the position of the heat insulating support.
kg / m ³ high-density polystyrene foam cylindrical member; a first moisture-proof material layer on which a moisture-proof material is wound or a moisture-proof coating film is formed over the entire outer periphery of the cylindrical member; An arc-shaped clamp for gripping the outer periphery of the cylindrical member from above the material layer; and a heat insulating cylinder made of standard density polystyrene foam or glass wool or rock wool mounted adjacent to the front and rear of the cylindrical member, A second moisture-proof material layer wound around the outer periphery of the heat-insulating cylinder from the outer periphery of the first moisture-proof material layer, wherein the outer diameter and the inner diameter of the cylindrical member are substantially equal to the outer diameter and the inner diameter of the heat-insulating cylinder, respectively. A high-density polystyrene foam pipe insulation support, characterized in that: 2. The pipe heat insulating support according to claim 1, wherein an uneven portion is formed on each end face of the cylindrical member and the heat retaining cylinder, and the two are fitted together by the uneven portion. 3. The pipe insulation support according to claim 1, wherein the arc-shaped clamp includes a U-shaped bolt, an arc-shaped cradle, and a nut, and fixes the insulation support to a building-side frame. Utensils. 4. The arc-shaped clamp according to claim 1, wherein the arc-shaped clamp comprises a pair of semicircular strips which open and close like hinges, and the heat insulating support is hung from a ceiling on the building side. Pipe insulation support.