JP5972556B2 - Thermal insulation structure - Google Patents

Description

  The present invention relates to a heat retaining structure, and more particularly to corrosion prevention of piping in the heat retaining structure.

  Conventionally, for example, Patent Document 1 describes that an outer periphery of a pipe is covered with a heat insulating material, and further, an outer periphery of the heat insulating material is covered with a protective cover made of a metal plate.

JP-A-8-19830

  However, in the above prior art, for example, when water enters from the joint of the protective cover by rainwater, the heat insulating material contains water, and as a result, the pipe may be corroded by the heat insulating material. Further, due to the corrosion of the pipes, there is a risk that fluids may leak from the pipes and develop into serious problems such as “plant shutdown” and “disaster”.

  In order to solve the above-described problems, the present invention has been developed for the purpose of providing a novel heat retaining structure that prevents corrosion of piping.

1st invention of this invention is a heat insulation structure of the piping part supported by piping parts other than a straight pipe part, and a supporting member, Comprising: On the inner surface of the exterior material which protects the said piping part, heat insulation, water repellency, non- The heat insulating material has a thin heat insulating material and has a through-hole penetrating the heat insulating material and the exterior material, and the heat insulating material is not in contact with the pipe portion.
Here, the “pipe part other than the straight pipe part” means fittings such as a bent pipe (elbow pipe), a valve, a flange, and a T-shaped pipe.
Further, the “pipe portion supported by the support member” means a pipe portion (including a straight pipe portion) supported by a support member (support member) such as a slide, a U bolt, or a hanging hanger.
2nd invention is the heat insulation structure characterized by providing the partition between the heat insulation material of the said piping part and the heat insulation material adjacent to this.
3rd invention is the said heat retention structure characterized by the heat insulating material of the said piping part being the fiber body with which the airgel was filled.
4th invention is the heat insulation structure characterized by connecting the exterior material of the said piping part with the substantially same outer diameter (without a level | step difference) as the exterior material adjacent to this.
5th invention is the heat insulation structure characterized by forming the through-hole for discharging | emitting water and water vapor | steams, such as rainwater which flowed in, and the exterior material of the said piping part.

The present invention described above has the following effects.
(1) The piping portion other than the straight pipe portion and the piping portion supported by the support member are portions where rainwater is likely to enter the heat insulation structure, but the inner surface of the exterior material protecting the piping portion is insulated and repellent. While having a thin heat insulating material having water and non-water absorption properties, the heat insulating material is in non-contact with the pipe portion, thereby preventing corrosion of the pipe. That is, by having a thin heat insulating material provided with heat insulation, water repellency, and non-water absorption on the inner surface of the exterior material that protects the pipe portion, first, rain water can be prevented from entering the heat insulating structure. Next, even if rainwater enters inside the heat insulation structure, the heat insulation material is not in contact with the pipe part, so that the rainwater adhering to the pipe surface evaporates, and the water vapor and moisture are exposed to the outside through the through hole. By discharging, the pipe is surely prevented from corroding.
(2) By providing a partition between the heat insulating material of the pipe part and the heat insulating material adjacent thereto, even if rainwater enters into the heat insulating structure of the pipe part, the heat insulating material is adjacent to the heat insulating material. Water penetration can be prevented. As a result, it is possible to prevent corrosion of the pipe covered with the adjacent heat insulating material.
(3) Since the heat insulating material of the pipe part is a fibrous body filled with aerogel, a thin heat insulating material having excellent heat insulation, water repellency, and non-water absorption is provided to prevent pipe corrosion. it can.
(4) The heat insulating material is in non-contact with the pipe part, and the exterior material of the pipe part is connected with the same outer diameter (without a step) as the exterior material of the straight pipe part adjacent thereto, The heat insulation structure can be made compact without increasing the size. As a result, work efficiency is improved and costs are reduced.
(5) Since the exterior material and the heat insulating material of the pipe part have formed through holes for escaping water and water vapor such as rainwater that has entered the heat insulating structure, water vapor generated inside the heat insulating structure of the pipe part is The water is discharged out of the heat retaining structure through the through hole together with water. As a result, the humidity inside the heat retaining structure becomes low (drys), and corrosion of the piping can be effectively prevented.

Explanatory drawing (1) which shows 1st Embodiment of this invention. Explanatory drawing (2) which shows 1st Embodiment of this invention. Explanatory drawing (1) which shows 2nd Embodiment of this invention. Explanatory drawing (2) which shows 2nd Embodiment of this invention. Explanatory drawing (1) which shows 3rd Embodiment of this invention. Explanatory drawing (2) which shows 3rd Embodiment of this invention. Explanatory drawing which shows 4th Embodiment of this invention. Explanatory drawing which shows 5th Embodiment of this invention. Explanatory drawing which shows 6th Embodiment of this invention. Explanatory drawing which shows 7th Embodiment of this invention. Explanatory drawing which shows 8th Embodiment of this invention. Explanatory drawing which shows 9th Embodiment of this invention. Explanatory drawing which shows 10th Embodiment of this invention. Explanatory drawing which shows 11th Embodiment of this invention. Explanatory drawing which shows 12th Embodiment of this invention. Explanatory drawing which shows 13th Embodiment of this invention. Explanatory drawing which shows 14th Embodiment of this invention. Explanatory drawing which shows 15th Embodiment of this invention.

An embodiment relating to a heat retaining structure of the present invention will be described with reference to the drawings.
First, the heat insulating material used in this embodiment will be described. This heat insulating material is a thin heat insulating material having heat insulation, water repellency, and non-water absorption. For example, a fibrous body filled with airgel (hereinafter referred to as “aerogel fibrous body”) can be preferably used.

  This airgel fiber body is a heat insulating structure that can be manufactured by filling a fiber substrate with airgel. Specifically, the airgel fiber body can be produced, for example, by impregnating the airgel raw material between the fibers of the fiber base material, and then supercritically drying the fiber base material impregnated with the airgel raw material. .

  As a fiber base material which comprises an airgel fiber body, the woven fabric or nonwoven fabric of an inorganic fiber or an organic fiber can be used. By using a nonwoven fabric in which fibers are entangled irregularly as a fiber base material, the airgel can be more effectively held between the fibers.

  Moreover, as a fiber which comprises a fiber base material, inorganic fibers, such as resin fibers, such as a polyethylene terephthalate (PET) fiber, carbon fiber, glass fiber, an alumina fiber, can be used, for example.

  As an airgel with which a fiber base material is filled, an airgel (inorganic airgel) made of an inorganic material or an airgel (organic airgel) made of an organic material can be used. By using the inorganic airgel, the heat resistance of the airgel fiber can be effectively increased.

  As the inorganic airgel, for example, silica airgel or alumina airgel can be used. Especially, the heat insulation of an airgel fiber body can be effectively improved by using a silica airgel.

  Moreover, as this heat insulating material, a thing with higher heat insulation is preferable. Specifically, the thermal conductivity at 25 ° C. of the heat insulating material measured by a method based on ASTM C177 is preferably 0.05 W / (m · K) or less, for example, 0.02 W / (m · K) The following is more preferable.

  That is, for example, an airgel fiber body whose thermal conductivity is in the above range can be preferably used as a heat insulating material. In addition, the airgel which fills the space | gap between the fibers of an airgel fiber body can prevent effectively the convection of the air in the inside of the said airgel fiber body by the micropore in the said airgel. For this reason, an airgel fiber body can have the outstanding heat insulation.

Further, the water vapor permeability of the heat insulating material measured by a method based on ASTM E96 (Procedure B) is preferably, for example, 600 ng / (Pa · S · m 2) or more, and preferably 1500 ng / (Pa · S · m 2). Or more).

  In addition, the water absorption rate of the heat insulating material after being immersed in water measured by a method based on ASTM C1104 is, for example, preferably 10% by weight or less, and more preferably 4% by weight or less. In addition, the water repellency of the heat insulating material measured by a method based on ASTM C1511 is, for example, preferably 5 g weight loss or less, and more preferably 3 g weight loss or less.

  That is, as the heat insulating material, for example, an airgel fiber body further provided with either or both of the water absorption rate and the water repellency in the above range in addition to the water vapor permeability in the above range can be preferably used. In addition, the airgel fiber body can have the water vapor permeability, water permeability and water absorption as described above in addition to excellent heat insulation properties due to the fine pores in the airgel as described above.

  Moreover, when using an airgel fiber body as this heat insulating material, it is preferable to make the bulk density of the said airgel fiber body into the range of 100-300 kg / m3, for example, and it is more preferable to set it as the range of 150-200 kg / m3. . By using an airgel fiber body having a bulk density in the above range, the heat retention structure can be reduced in weight.

  Furthermore, it is preferable that this heat insulating material has appropriate flexibility. That is, as the heat insulating material, a sheet-like body having flexibility that can be wound along the inner surface of the exterior material can be used.

  Specifically, for example, an airgel fiber sheet obtained by filling a fiber base material, which is a nonwoven fabric, with airgel can be preferably used. In this case, the preferred thickness of the airgel fiber body varies depending on the temperature of the fluid flowing in the piping, but as a general example, it is preferably in the range of 3 to 20 mm, and in the range of 5 to 10 mm. It is more preferable.

Next, a first embodiment of the present invention shown in FIGS. 1-1 and 1-2 will be described.
1st Embodiment is the heat insulation structure 10 of the curved pipe part (elbow part) by which the elbow was processed (FIG. 1-1 is a curved pipe part of the lower right shoulder, FIG. 1-2 is a curved pipe part of the left shoulder raised). . The heat insulating structure 10 has the thin heat insulating material 13 provided with heat insulating properties, water repellency, non-water absorbing heat insulating properties, water repellency, and non water absorbing properties on the inner surface of the exterior material 12 that protects the curved pipe portion 11. The heat insulating material 13 is not in contact with the bent tube portion 11. This prevents rainwater from entering the inside of the heat retaining structure 10 to prevent corrosion of the piping (curved pipe portion), and even if rainwater enters the inside of the heat retaining structure 10, the heat insulating material 13 is brought into the curved pipe portion. By being non-contact, rainwater adhering to the pipe surface evaporates, preventing corrosion of the pipe. Instead of the exterior material 12 and the heat insulating material 13, a “futon-like heat insulating material” in which an airgel fiber body is covered with a jacket material made of a heat-resistant inorganic fiber cloth may be used (in other embodiments). Is the same).

  Furthermore, by having the through-holes 14 in the exterior material 12 and the heat insulating material 13, the water and water vapor that have entered the heat insulating structure 10 can be efficiently discharged, thereby further preventing the corrosion of the piping. Further, by providing the partition 15 between the heat insulating material 13 and the heat insulating material 19 adjacent thereto, even if rainwater enters the heat insulating structure 10 inside the bent tube portion 11, the heat insulating material 13 reaches the adjacent heat insulating material 19. Water penetration can be prevented. As a result, it is possible to prevent corrosion of the piping covered with the adjacent heat insulating material 19. Here, by attaching the same heat insulating material 13 b to the partition 15, the corrosion of the pipe can be more reliably prevented.

A second embodiment of the present invention shown in FIGS. 2-1 and 2-2 will be described.
2nd Embodiment is the heat insulation structure 20 of the curved pipe part (elbow part) by which shrimp joint processing was carried out (FIGS. 2-1 is a curved pipe part of the lower right shoulder, FIG. . The heat retaining structure 20 has the thin heat retaining material 23 provided with heat insulating properties, water repellency, non-water absorbing heat insulating properties, water repellency, and non water absorbing properties on the inner surface of the exterior material 22 that protects the curved pipe portion 21. The heat insulating material 23 is not in contact with the curved pipe portion 21. This prevents rainwater from entering the heat retaining structure 20 to prevent corrosion of the piping (curved pipe portion), and even if rainwater enters the heat retaining structure 20, the heat retaining material 23 is brought into the curved pipe portion. By being non-contact, rainwater adhering to the pipe surface evaporates, preventing corrosion of the pipe.

  Furthermore, by having the through holes 24 in the exterior material 22 and the heat insulating material 23, the water and water vapor that have entered the heat insulating structure 20 can be efficiently discharged, thereby further preventing the corrosion of the piping. Further, by providing the partition 25 between the heat insulating material 23 and the heat insulating material 29 adjacent to the heat insulating material 23, even if rainwater enters the heat insulating structure 20 of the curved pipe portion 21, the heat insulating material 23 reaches the adjacent heat insulating material 29. Water penetration can be prevented. As a result, it is possible to prevent corrosion of the pipe covered with the adjacent heat insulating material 29. Here, by attaching the same heat insulating material 23b to the partition 25, it is possible to more reliably prevent the pipe from being corroded.

A third embodiment of the present invention shown in FIGS. 3-1 and 3-2 will be described.
3rd Embodiment is the heat retention structure 30 of the non-bonnet-type valve | bulb part (FIG. 3-1 is a type with which the heat insulating material 33 rides on the adjacent heat insulating material 39, FIG. 3-2 has the heat insulating material 33 adjoining. The type that enters the inside of the heat insulating material 39 = the type in which the exterior material 32 is attached to the adjacent portion in a substantially flat manner). The heat retaining structure 30 includes the thin heat retaining material 33 provided with heat insulation, water repellency, and non-water absorption on the inner surface of the exterior material 32 that protects the valve portion 31. The heat insulating material 33 is not in contact with the pipe 38 connected to the valve. This prevents rainwater from entering the heat retaining structure 30 to prevent the pipe 38 from corroding. Even if rainwater enters the heat retaining structure 30, the heat retaining material 33 is not in contact with the pipe 38. As a result, rainwater adhering to the pipe surface evaporates, and corrosion of the pipe 38 is prevented.

  In addition, the exterior material 32 and the heat insulating material 33 are formed with through holes 34 for releasing water and water vapor that have entered the heat insulating structure. As a result, water such as rainwater and water vapor that has penetrated are discharged out of the heat retaining structure 30. As a result, the humidity inside the heat retaining structure 30 is lowered (dried), and corrosion of the pipe 38 can be effectively prevented. Further, by providing the partition 35 between the adjacent heat insulating material 39, even if rainwater enters the heat insulating structure 30, water can be prevented from penetrating into the adjacent heat insulating material 39. As a result, it is possible to prevent corrosion of the pipe covered with the adjacent heat insulating material 39. Here, by attaching the same heat insulating material 33b to the partition 35, it is possible to more reliably prevent the corrosion of the pipe. The “type in which the heat insulating material enters inside the adjacent heat insulating material” illustrated in FIG. 3B is a form that can be implemented in other embodiments as well, although not illustrated.

A fourth embodiment of the present invention shown in FIG. 4 will be described.
4th Embodiment is the heat retention structure 40 of a flange part. The heat retaining structure 40 has the thin heat retaining material 43 provided with heat insulation, water repellency, and non-water absorption on the inner surface of the exterior material 42 that protects the flange portion 41. And the heat insulating material 43 is non-contact with the piping 48 provided with the flange. This prevents rainwater from entering the inside of the heat retaining structure 40 to prevent the pipe 48 from corroding. Even if rainwater enters the inside of the heat retaining structure 40, the heat insulating material 43 is not in contact with the pipe 48. As a result, rainwater adhering to the pipe surface evaporates, and corrosion of the pipe 48 is prevented.

  In addition, the exterior material 42 and the heat insulating material 43 are formed with through holes 44 for releasing water and water vapor that have entered the heat insulating structure. As a result, water such as rainwater and water vapor that has penetrated are discharged out of the heat retaining structure 40. As a result, the humidity inside the heat retaining structure 40 becomes low (drys), and corrosion of the pipe 48 can be effectively prevented. Further, by providing the partition 45 between the adjacent heat insulating material 49, it is possible to prevent water from penetrating into the adjacent heat insulating material 49 even if rainwater enters the heat insulating structure 40. As a result, it is possible to prevent corrosion of the pipe covered with the adjacent heat insulating material 49. Here, by attaching the same heat insulating material 43b to the partition 45, the corrosion of the pipe can be more reliably prevented.

A fifth embodiment of the present invention shown in FIG. 5 will be described.
5th Embodiment is the heat insulation structure 50 of piping supported by a slide. The heat retaining structure 50 includes the thin heat retaining material 53 provided with heat insulation, water repellency, and non-water absorption on the inner surface of the exterior material 52 that protects the pipe 58 supported by the slide 51. The heat insulating material 53 is not in contact with the pipe 58 supported by the slide 51. This prevents rainwater from entering the inside of the heat retaining structure 50 to prevent corrosion of the pipe 58. Even if rainwater enters the inside of the heat retaining structure 50, the heat insulating material 53 is not in contact with the pipe 58. As a result, the rainwater adhering to the pipe surface evaporates, and corrosion of the pipe 58 is prevented.

  In addition, the exterior material 52 and the heat insulating material 53 are formed with through holes 54 for releasing water and water vapor that have entered the heat insulating structure. As a result, water such as rainwater that has entered and water vapor are discharged out of the heat retaining structure 50. As a result, the humidity inside the heat retaining structure 50 is reduced (dried), and corrosion of the pipe 58 can be effectively prevented. Further, by providing the partition 55 between the adjacent heat insulating material 59, it is possible to prevent water from penetrating into the adjacent heat insulating material 59 even if rainwater enters the heat insulating structure 50. As a result, it is possible to prevent corrosion of the pipe covered with the adjacent heat insulating material 59. Here, by attaching the same heat insulating material 53b to the partition 55, the corrosion of the pipe can be more reliably prevented.

A sixth embodiment of the present invention shown in FIG. 6 will be described.
6th Embodiment is the heat insulation structure 60 of piping supported by a hanging hanger. The heat retaining structure 60 has the thin heat retaining material 63 provided with heat insulation, water repellency, and non-water absorption on the inner surface of the exterior material 62 that protects the pipe 68 supported by the hanging hanger 61. The heat insulating material 63 is not in contact with the pipe 68 supported by the hanging hanger 61. This prevents rainwater from entering the inside of the heat retaining structure 60 to prevent corrosion of the pipe 68. Even if rainwater enters the heat retaining structure 60, the heat insulating material 63 does not contact the pipe 68. As a result, rainwater adhering to the pipe surface evaporates, and corrosion of the pipe 68 is prevented.

  In addition, the exterior material 62 and the heat insulating material 63 are formed with through holes 64 for releasing water and water vapor that have entered the heat insulating structure. As a result, water such as rainwater that has entered and water vapor are discharged out of the heat retaining structure 60. As a result, the humidity inside the heat retaining structure 60 is reduced (dried), and corrosion of the pipe 68 can be effectively prevented. Furthermore, by providing the partition 65 between the adjacent heat insulating material 69, it is possible to prevent water from penetrating into the adjacent heat insulating material 69 even if rainwater enters the heat insulating structure 60. As a result, it is possible to prevent corrosion of the pipe covered with the adjacent heat insulating material 69. Here, by attaching the same heat insulating material 63b to the partition 65, it is possible to more reliably prevent the corrosion of the pipe.

A seventh embodiment of the present invention shown in FIG. 7 will be described.
7th Embodiment is the heat insulation structure 70 of piping supported by a slide. The heat retaining structure 70 includes the thin heat retaining material 73 provided with heat insulation, water repellency, and non-water absorption on the inner surface of the exterior material 72 that protects the piping 78 supported by the slide 71. The heat insulating material 73 is not in contact with the pipe 78 supported by the slide 71. This prevents rainwater from entering the inside of the heat retaining structure 70 to prevent the pipe 78 from corroding. Even if rainwater enters the inside of the heat retaining structure 70, the heat insulating material 73 is not in contact with the pipe 78. As a result, the rainwater adhering to the pipe surface evaporates, and corrosion of the pipe 78 is prevented.

  In addition, the exterior material 72 and the heat insulating material 73 are formed with through holes 74 for releasing water and water vapor that have entered the heat insulating structure. As a result, water such as rainwater and water vapor that has entered the interior are discharged out of the heat retaining structure 70. As a result, the humidity inside the heat retaining structure 70 is lowered (dried), and corrosion of the pipe 78 can be effectively prevented. Furthermore, by providing the partition 75 between the adjacent heat insulating material 79, even if rainwater enters the heat insulating structure 70, water can be prevented from penetrating into the adjacent heat insulating material 79. As a result, it is possible to prevent corrosion of the pipe covered with the adjacent heat insulating material 79. Here, by attaching the same heat insulating material 73b to the partition 75, it is possible to more reliably prevent the corrosion of the pipe.

An eighth embodiment of the present invention shown in FIG. 8 will be described.
The eighth embodiment is a heat insulating structure 80 for piping supported by a slide. The heat retaining structure 80 includes the thin heat retaining material 83 provided with heat insulation, water repellency, and non-water absorption on the inner surface of the exterior material 82 that protects the pipe 88 supported by the slide 81. The heat insulating material 83 is not in contact with the pipe 88 supported by the slide 81. This prevents rainwater from entering the inside of the heat retaining structure 80 to prevent corrosion of the pipe 88. Even if rainwater enters the inside of the heat retaining structure 80, the heat insulating material 83 is not in contact with the pipe 88. As a result, rainwater adhering to the pipe surface evaporates, and corrosion of the pipe 88 is prevented.

  In addition, the exterior material 82 and the heat insulating material 83 are formed with through holes 84 for releasing water and water vapor that have entered the heat insulating structure. As a result, water such as rainwater that has entered and water vapor are discharged out of the heat retaining structure 80. As a result, the humidity inside the heat retaining structure 80 is lowered (dried), and corrosion of the pipe 88 can be effectively prevented. Furthermore, by providing the partition 85 between the adjacent heat insulating material 89, even if rainwater enters the heat insulating structure 80, water can be prevented from penetrating into the adjacent heat insulating material 89. As a result, it is possible to prevent corrosion of the piping covered with the adjacent heat insulating material 89. Here, by attaching the same heat insulating material 83 b to the partition 85, the corrosion of the pipe can be more reliably prevented.

A ninth embodiment of the present invention shown in FIG. 9 will be described.
The ninth embodiment is a heat insulation structure 90 for piping supported by U bolts. The heat retaining structure 90 includes the thin heat retaining material 93 provided with heat insulation, water repellency, and non-water absorption on the inner surface of the exterior material 92 that protects the pipe 98 supported by the U bolt 91. The heat insulating material 93 is not in contact with the pipe 98 supported by the U bolt 91. This prevents rainwater from entering the inside of the heat retaining structure 90 to prevent the pipe 98 from corroding. Even if rainwater enters the inside of the heat retaining structure 90, the heat retaining material 93 is not in contact with the pipe 98. As a result, rainwater adhering to the pipe surface evaporates, and corrosion of the pipe 98 is prevented.

  In addition, the exterior material and the heat insulating material 93 are formed with through holes 94 for releasing water and water vapor that have entered the heat insulating structure. As a result, water such as rainwater and water vapor that have entered the interior are discharged out of the heat retaining structure 90. As a result, the humidity inside the heat retaining structure 90 is lowered (dried), and corrosion of the pipe 98 can be effectively prevented. Further, by providing the partition 95 between the adjacent heat insulating material 99, it is possible to prevent water from penetrating into the adjacent heat insulating material 99 even if rainwater enters the heat insulating structure 90. As a result, it is possible to prevent corrosion of the pipe covered with the adjacent heat insulating material 99. Here, by attaching the same heat insulating material 93b to the partition 95, the corrosion prevention of the pipe can be made more reliable.

A tenth embodiment of the present invention shown in FIG. 10 will be described.
The tenth embodiment is a heat insulating structure 100 for piping supported by U bolts. The heat retaining structure 100 has the thin heat retaining material 103 provided with heat insulation, water repellency, and non-water absorption on the inner surface of the exterior material 102 that protects the pipe 108 supported by the U bolt 101. The heat insulating material 103 is not in contact with the pipe 108 supported by the U bolt 101. This prevents rainwater from entering the inside of the heat retaining structure 100 to prevent corrosion of the pipe 108. Even if rainwater enters the heat retaining structure 100, the heat insulating material 103 is not in contact with the pipe 108. As a result, rainwater adhering to the pipe surface evaporates, and corrosion of the pipe 108 is prevented.

  In addition, the exterior material 102 and the heat insulating material 103 are formed with through holes 104 for releasing water and water vapor that have entered the heat insulating structure. As a result, water such as rainwater that has entered and water vapor are discharged out of the heat retaining structure 100. As a result, the humidity inside the heat retaining structure 100 is reduced (dried), and corrosion of the pipe 108 can be effectively prevented. Further, by providing the partition 105 between the adjacent heat insulating material 109, it is possible to prevent water from penetrating into the adjacent heat insulating material 109 even if rainwater enters the heat insulating structure 100. As a result, it is possible to prevent corrosion of the piping covered with the adjacent heat insulating material 109. Here, by attaching the same heat insulating material 103b to the partition 105, it is possible to more reliably prevent the corrosion of the pipe.

An eleventh embodiment of the present invention shown in FIG. 11 will be described.
The eleventh embodiment is a heat insulating structure 110 for piping supported by a hanging hanger with a box-type rain cover. The heat retaining structure 110 includes the thin heat retaining material 113 provided with heat insulation, water repellency, and non-water absorption on the inner surface of the exterior material 112 that protects the pipe 118 supported by the hanging hanger 111. The heat insulating material 113 is not in contact with the pipe 118 supported by the hanging hanger 111. This prevents rainwater from entering the inside of the heat retaining structure 110 to prevent corrosion of the pipe 118. Even if rainwater enters the heat retaining structure 110, the heat insulating material 113 does not contact the pipe 118. As a result, rainwater adhering to the pipe surface evaporates, and corrosion of the pipe 118 is prevented.

  In addition, the exterior material 112 and the heat insulating material 113 are formed with through holes 114 for releasing water and water vapor that have entered the heat insulating structure. As a result, water such as rainwater and water vapor that has permeated are discharged out of the heat retaining structure 110. As a result, the humidity inside the heat retaining structure 110 is lowered (dried), and corrosion of the pipe 118 can be effectively prevented. Further, by providing the partition 115 between the adjacent heat insulating material 119, it is possible to prevent water from penetrating into the adjacent heat insulating material 119 even if rainwater enters the heat insulating structure 110. As a result, it is possible to prevent corrosion of the pipe covered with the adjacent heat insulating material 119. Here, by attaching the same heat insulating material 113b to the partition 115, corrosion of the pipe can be more reliably prevented.

A twelfth embodiment of the present invention shown in FIG. 12 will be described.
The twelfth embodiment is a heat insulating structure 120 for piping supported by a hanging hanger with a Jinkasa type rain guard. The heat retaining structure 120 includes the above-described thin heat retaining material 123 provided with heat insulation, water repellency, and non-water absorption on the inner surface of the exterior material 122 that protects the pipe 128 supported by the hanging hanger 121. The heat insulating material 123 is not in contact with the pipe 128 supported by the hanging hanger 121. This prevents rainwater from entering the heat retaining structure 120 to prevent the pipe 128 from corroding. Even if rainwater enters the heat retaining structure 120, the heat retaining material 123 is not in contact with the pipe 128. As a result, rainwater adhering to the pipe surface evaporates, and corrosion of the pipe 128 is prevented.

  In addition, the exterior material 122 and the heat insulating material 123 are formed with through holes 124 for releasing water and water vapor that have entered the heat insulating structure. As a result, water such as rainwater that has entered and water vapor are discharged out of the heat retaining structure 120. As a result, the humidity inside the heat retaining structure 120 is reduced (dried), and corrosion of the pipe 128 can be effectively prevented. Further, by providing the partition 125 between the adjacent heat insulating material 129, it is possible to prevent water from penetrating into the adjacent heat insulating material 129 even if rainwater enters the heat insulating structure 120. As a result, it is possible to prevent corrosion of the pipe covered with the adjacent heat insulating material 129. Here, by attaching the same heat insulating material 123b to the partition 125, it is possible to more reliably prevent the corrosion of the pipe.

A thirteenth embodiment of the present invention shown in FIG. 13 will be described.
The thirteenth embodiment is a heat insulation structure 130 of a curved pipe portion supported by a hanging hanger with a box-type rain cover. The heat retaining structure 130 has the above-described thin heat retaining material 133 provided with heat insulation, water repellency, and non-water absorption on the inner surface of the exterior material 132 that protects the curved pipe portion 138 supported by the hanging hanger 131. The heat insulating material 133 is not in contact with the curved pipe portion 138 supported by the hanging hanger 131. This prevents rainwater from entering the inside of the heat retaining structure 130 to prevent corrosion of the pipe (curved pipe portion). Even if rainwater enters the inside of the heat retaining structure 130, the heat insulating material 133 is bent into the curved pipe portion. Because it is non-contact, rainwater adhering to the pipe surface evaporates, preventing corrosion of the pipe.

In addition, the exterior material 132 and the heat insulating material 133 are formed with through holes 134 for releasing water and water vapor that have entered the heat insulating structure. As a result, water such as rainwater that has entered and water vapor are discharged out of the heat retaining structure 130. As a result, the humidity inside the heat retaining structure 130 is lowered (dried), and corrosion of the pipe 138 can be effectively prevented.
Further, by providing the partition 135 between the heat insulating material 133 and the heat insulating material 139 adjacent thereto, even if rainwater enters into the heat insulating structure 130 of the bent tube portion 131, the heat insulating material 133 reaches the adjacent heat insulating material 139. Water penetration can be prevented. As a result, it is possible to prevent corrosion of the pipe covered with the adjacent heat insulating material 139. Here, by attaching the same heat insulating material 133b to the partition 135, it is possible to more reliably prevent the corrosion of the pipe.

A fourteenth embodiment of the present invention shown in FIG. 14 will be described.
The fourteenth embodiment is a heat retention structure 140 for a non-bonnet type valve portion. The heat retaining structure 140 includes the thin heat retaining material 143 provided with heat insulation, water repellency, and non-water absorption on the inner surface of the exterior material 142 that protects the valve portion 141. The heat insulating material 143 is not in contact with the pipe 148 connected to the valve. This prevents rainwater from entering the heat retaining structure 140 to prevent corrosion of the pipe 148. Even if rainwater enters the heat retaining structure 140, the heat retaining material 143 is not in contact with the pipe 148. As a result, rainwater adhering to the pipe surface evaporates, and corrosion of the pipe 148 is prevented. The difference from the heat retaining structure 30 shown in the third embodiment is that the connection portion of the pipe 148 covered with the heat retaining material 146, the exterior material 147, etc. is in an uncovered state (no contact with the pipe). And the heat insulating material 143 is wound around the outside of the exterior material 147.

Further, the exterior material 142 and the heat insulating material 143 are formed with through holes 144 for releasing water and water vapor that have entered the heat insulating structure. As a result, water such as rainwater and water vapor that has permeated are discharged outside the heat retaining structure 140. As a result, the humidity inside the heat retaining structure 140 is reduced (dried), and corrosion of the pipe 148 can be effectively prevented.
Note that the “ALGC sheet” illustrated in FIG. 14 may be omitted.

A fifteenth embodiment of the present invention shown in FIG. 15 will be described.
The fifteenth embodiment is a heat insulating structure 150 for piping supported by a hanging hanger with a Jinkasa type rain guard. The heat retaining structure 150 has the thin heat retaining material 153 provided with heat insulation, water repellency, and non-water absorption on the inner surface of the exterior material 152 that protects the pipe 158 supported by the hanging hanger 151. The heat insulating material 153 is not in contact with the pipe 158 supported by the hanging hanger 151. This prevents rainwater from entering the heat insulation structure 150 to prevent corrosion of the pipe 158. Even if rainwater enters the heat insulation structure 150, the heat insulation material 153 is not in contact with the pipe 158. As a result, rainwater adhering to the pipe surface evaporates, and corrosion of the pipe 158 is prevented. Note that the heat insulation structure 120 shown in the twelfth embodiment is different from the heat insulation structure 120 in that the support portion supported by the hanging hanger of the pipe 158 covered with the heat insulation material 156, the exterior material 157, etc. is in an uncovered state (the pipe and the non-covering structure). In the contact state), the heat insulating material 153 is wound around the outside of the exterior material 157.

Further, the exterior material 152 and the heat insulating material 153 are formed with through holes 154 for releasing water and water vapor that have entered the heat insulating structure. As a result, water such as rainwater that has entered and water vapor are discharged out of the heat retaining structure 150. As a result, the humidity inside the heat retaining structure 150 is reduced (dried), and corrosion of the pipe 158 can be effectively prevented.
The “ALGC sheet” illustrated in FIG. 15 may be omitted.

  The present invention is a heat retaining structure that can be widely used to prevent corrosion of piping in a piping portion other than the straight pipe portion and a piping portion supported by a support member.

DESCRIPTION OF SYMBOLS 10 Thermal insulation structure 11 Curved pipe part 12 Exterior material 13 Thermal insulation material 13b Thermal insulation material 14 Through-hole 15 Partition 19 Thermal insulation material

Claims (3)

A heat insulation structure of a pipe part supported by a pipe part other than the straight pipe part and a support member,
While having a thin heat insulating material with heat insulation, water repellency, non-water absorption on the inner surface of the exterior material protecting the pipe part, the heat insulating material is non-contact with the pipe part,
The heat insulating material of the pipe part is provided with a partition for preventing water from penetrating between the heat insulating material adjacent to the heat insulating material ,
A heat insulating structure characterized in that the heat insulating material of the pipe portion is a fibrous body filled with aerogel . The heat insulating structure according to claim 1, wherein the exterior material of the pipe portion is connected with substantially the same outer diameter as the exterior material adjacent thereto . The heat insulation structure according to claim 1 or 2, wherein the exterior material of the piping part is formed with a through hole for discharging water flowing into the heat insulation structure in the form of water and water vapor .

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