JP3177884U - Thermal insulation material for piping - Google Patents

Abstract

[PROBLEMS] To provide a heat insulating member that can be installed in a cold insulating pipe line at a flange joint part or a pipe exposed part of an operation valve intervening part by a simple operation and can be kept cold without causing condensation.
A first heat retaining member having an inner recess corresponding to a shape of a covering portion of a complex uneven surface in a flange portion of a joint, and formed of a foam rubber heat insulating material in a shape covering an entire exposed pipe, and the first A shape that covers the entire outer peripheral surface of the heat insulating member and the outer peripheral surface of the cold insulation pipe line, and a shape that covers the entire outer peripheral surface of the first heat insulating member and the outer peripheral surface of the cold insulating pipe, It is comprised with the outer side heat insulation member 3 which filled the suitable heat insulating material in the bag body which formed the outer side with the waterproof cloth.
[Selection] Figure 5

Description

  The present invention relates to a heat insulating member for piping mainly used in a flange joint part and an operation valve joint part in a cooling pipe system.

  In order to make the pipe for cooling fluid generally have a heat insulation structure, a thin metal plate serving as an exterior material is arranged on the outer periphery of the pipe, and urethane resin is foam-filled between the pipe and the thin metal board to cool the pipe. Or a foamed resin sheet (heat insulating material) is wrapped around a pipe and covered with an exterior material to achieve pipe cooling.

  In addition, at the flange joints and operation valve joints of the above-mentioned cold insulation pipes, the bolts and nuts that connect the flanges, etc. can be attached and removed for periodic inspections and repairs. The above-mentioned pipe heat insulation structure is not adopted, and a separate heat insulation member is employed to achieve cold insulation. The most commonly used heat insulation structure is the area where the pipe heat insulation structure is not adopted (hereinafter referred to as the “exposed joint range”) is covered with an insulative heat insulating material (generally glass wool), and the left and right ends of the exposed joint range. Cover the outer periphery of the pipe cold insulation part and the outer periphery of the insulative heat insulation material covering part with a cold insulation material (foamed urethane, foamed polystyrene, etc.) and further coat with an exterior material formed of a resin plate or a thin metal plate (See JIS 9501-1995, page 38).

  In addition, when an irregular shaped member is used for the entire joint range as described above, the construction itself is complicated, and the removal work in the event of a leakage accident is troublesome, and further, it is difficult to reuse the irregular shaped heat retaining member. For this reason, it is disclosed in Patent Document 1 that a cylindrical fixed heat insulating body (expanded polystyrene) is used in a joint range excluding uneven portions such as a bolt head portion, a bolt shaft portion, and a nut in a flange portion. It is disclosed.

JP-A-10-132191.

  When a large amount of generally used amorphous heat retaining members are used, it is natural that the construction is complicated. Moreover, even if a part of the amorphous heat retaining member is changed to a fixed member such as expanded polystyrene as described in Patent Document 1, the outer shape to be covered by the fixed heat retaining member is not always constant. The inner surface is not always attached in close contact with the outer shape to be covered. That is, the outer shape of the exterior material, the pipe length of the exposed joint range, and the like are not necessarily formed with accurate dimensions because the cold insulation structure of the pipe line is foamed in-situ. For this reason, it is natural that a manufacturing error occurs. When the internal shape of the fixed member is determined in consideration of the manufacturing error, a gap may be generated inside the fixed heat retaining member.

  Condensation occurs due to the presence of this gap, and if this condensation oozes out after the heat insulation work, there is a possibility that it may be mistaken as a leak from the pipeline.

  However, if the gap is filled with an insulative heat retaining member for each construction site, the purpose of simplifying the construction itself using the fixed member is lost.

  Therefore, the present invention proposes a new heat insulating member for piping that is easy to construct and does not cause internal condensation.

  A heat insulating member for piping according to the present invention is a heat insulating member that covers an exposed joint range in a cold insulating pipe subjected to a predetermined cold insulation treatment, such as a bolt head portion, a bolt shaft portion, and a nut in a flange portion of the joint. A first heat retaining member provided with an inner concave portion corresponding to the shape of the covering portion of the complex uneven surface, and formed of a foam rubber heat insulating material in a shape covering the entire exposed pipe, and the entire outer peripheral surface of the first heat retaining member and the cold insulation pipe line A second heat insulating member formed of foamed rubber heat insulating material in a shape covering the outer peripheral surface, and a shape covering the entire outer peripheral surface of the first heat insulating member and the outer surface of the cold insulating pipe, and appropriately outside the bag body formed of a waterproof cloth. And an outer heat retaining member filled with a heat insulating material.

  Thus, the complicated uneven surface portions such as the bolt head portion, bolt shaft portion, and nut in the flange portion of the joint are covered with an amorphous heat insulating material such as glass wool, and the first heat insulating member is further coated thereon, and the second heat insulating member is further covered. Covering the heat insulation member, caulking and sealing the contact area between the exterior material of the pipe line and the second heat insulation member, and covering the outer heat insulation member to realize the heat treatment treatment of the entire exposed joint area of the pipe line Since the first heat retaining member and the second heat retaining member are formed of a foam rubber heat insulating material, the first heat retaining member and the second heat retaining member have elasticity (deformability). As a result, no condensation occurs.

  Moreover, the heat insulation member for piping which concerns on this invention (Claim 2) WHEREIN: The said heat insulation member WHEREIN: The 1st heat insulation member and the 2nd heat insulation member are laminated | stacked and the sheet | seat member which stuck the aluminum glass cloth on the surface is formed. The aluminum glass cloth acts as a moisture-proof layer and further prevents condensation due to intrusion of outside air.

  Moreover, the heat insulating member for piping according to the present invention (Claim 3) is an outer heat insulating member formed by forming a waterproof cloth with a fluorine-coated glass cloth and adopting a foam rubber heat insulating material as a heat insulating material. Formed in two parts in the axial direction, connected to one side of the divided part so that the whole can be opened and closed, and a connecting tongue piece provided with a hook-and-loop fastener at an appropriate position on the outer periphery is projected and closed, and the corresponding position with the hook-and-loop fastener A hook-and-loop fastener receiving portion is provided on the outer heat-retaining member, and the outer heat-retaining member can be easily attached to the pipe line by covering the outer surface of the second heat-retaining member with the outer heat-retaining member open and connecting the surface fastener. .

  The configuration of the present invention is as described above, and a foamed rubber heat insulating material capable of deforming the first heat retaining member and the second heat retaining member while providing a perfect heat insulating effect by superimposing three types of heat retaining members to form a triple structure. Therefore, the generation of internal dew condensation is also suppressed because no voids permitting outside air to enter the heat insulation structure.

The whole perspective view of the outside heat retention member of a first embodiment of the present invention. The whole perspective view of the 1st heat retention member. The whole perspective view of the 2nd heat retention member. The whole perspective view of the state which combined all the heat retention members (state which closed the outside member). The whole perspective view of the state which combined all the heat retention members (state which opened the outside member). Pipe explanatory drawing of the same mounting object. Sectional drawing of the same pipe line mounting state. Sectional drawing of the pipe line mounting state of the second embodiment. The perspective view of each said heat retention member.

  Next, an embodiment of the present invention will be described. FIGS. 1 to 7 show a first embodiment, and this embodiment is for the flange connection portion of the conduit illustrated in FIG.

  The pipe line to which the heat retaining member is attached is a pipe line for the cooling fluid, and a thin metal plate serving as the exterior material B is disposed on the outer periphery of the pipe A, and between the pipe A and the exterior material (thin metal plate) B. Urethane resin C is foam-filled to realize cooling of the pipe line, and in particular, at the flange joint D, the bolt and nut E for connecting the flange joint D can be attached and detached. Pipe A is exposed.

  The heat retaining member of the present invention is composed of the first heat retaining member 1, the second heat retaining member 2, and the outer heat retaining member 3, and covers the exposed pipe portion (exposed joint range).

  As shown in FIG. 2, the first heat retaining member 1 has an inner diameter whose outer periphery is substantially the same as the outer diameter of the exterior material B of the pipe line and is substantially the same as the outer diameter of the pipe A (adhering to the pipe). A cylindrical body corresponding to the exposed length of A, which is formed of the foam rubber heat insulating material 11, and an aluminum glass cloth 12 is adhered to the outer peripheral surface.

  Furthermore, inwardly, it corresponds to the range including the complex irregular surface such as bolt head, bolt shaft, nut etc. connecting the flange joint D and flange joint D of the pipe line from the inner diameter part (pipe covering part 13). An inner recess 14 that bisects the whole in the direction of the tube axis, and connects one outer peripheral surface of the split edge so that the whole can be opened and closed, and a connecting tongue piece 15 projects from the edge of the opening and closing part, A hook-and-loop fastener 16 is provided on the connecting tongue piece 15 and a hook-and-loop fastener receiving portion 16a is provided at the corresponding position.

  As shown in FIG. 3, the second heat retaining member 2 has an outer diameter that substantially matches the outer diameter of the exterior material B and the outer diameter of the first heat retaining member 1, and has an appropriate thickness (the pipe A and the exterior material). A cylindrical body having a length sufficient to cover the end portions of the left and right exterior bodies B of the exposed joint range, and formed of a foam rubber heat insulating material 21. In addition, a sheet member having an aluminum glass cloth 22 bonded to the outer peripheral surface is laminated.

  Further, the cylindrical body is separated in the tube axis direction so that the whole can be opened and closed, and is formed in a stepped shape with a sheet member in which separation portions are stacked, and when the cylindrical body is closed, A connecting tongue piece 25 provided with a hook-and-loop fastener 24 is provided at one of the separation points so that the contact surface has a stepped shape, and the cylindrical body is closed by connecting the separating portion 23, and the hook-and-loop fastener receiver is provided at the other. A portion 24a is provided.

  As shown in FIG. 1, the outer heat retaining member 3 includes a cylindrical portion 31 that covers an outer peripheral surface and an end surface of the second heat retaining member 2 with an appropriate thickness when the second heat retaining member 2 is attached to a pipe line. Formed with a foam cloth heat insulating material 34 filled in a waterproof cloth bag 33 formed of a fluorine-coated glass cloth with a shape having an end face portion 32, which can be opened and closed by being separated in the tube axis direction. A connecting tongue piece 36 having a hook-and-loop fastener 35 is provided at one of the separation portions of the cylindrical portion 31, a hook-and-loop fastener receiving portion 35a is provided at the other, and the end surface portion 32 is similarly provided with a hook-and-loop fastener at one of the separation portions. The connection tongue piece 38 provided with 37 is provided, and the surface fastener receiving portion 37a is provided on the other side.

  Thus, each of the heat retaining members covers the flange connecting portion of the pipe line shown in FIG. 6, and the uneven surface (exposed surface of the bolt head, bolt shaft, nut, etc.) of the connecting portion in the flange joint D. Is covered with an irregular heat insulating material F such as glass wool so as to correspond to the shape of the inner concave portion 14 of the first heat insulating member 1.

  Then, the first heat retaining member 1 is covered with a pipe line in the exposed joint range, the exposed portion of the pipe A is covered with the pipe covering portion 13, the covering portion of the indeterminate heat insulating member F is covered with the inner concave portion 14, and the surface fastener 16 and The hook-and-loop fastener receiving portion 16a is connected, and the first heat retaining member 1 is mounted in a close contact state over the entire exposed joint range.

  Next, the second heat retaining member 2 is attached, and the outer periphery of the first heat retaining member 1 and the outer peripheral portion of the exterior material B of the pipe line are covered outside the first heat retaining member 1, and the surface fastener 24 and the surface fastener. The receiving part 24a is connected, and the inner part is mounted in a state of being in close contact with the covering target (the outer peripheral surface of the first heat retaining member 1 and the outer peripheral surface of the exterior material B). Furthermore, caulking is applied to the contact portion between the exterior material B of the pipe line and the second heat retaining member 2 to seal it.

  In particular, since the first heat retaining member 1 and the second heat retaining member 2 are formed of the foam rubber heat insulating materials 11 and 21, they are mounted in a close contact state due to their elasticity (deformability).

  The outer heat retaining member 3 is mounted on the outer side of the second heat retaining member 2 in the hermetically sealed state, and the surface fasteners 35 and 37 of the connecting tongue pieces 36 and 38 are connected to the surface fastener receiving portions 35a and 37a. Then, it is attached in a state in which it is prevented from being detached from the pipeline.

  The outer heat retaining member 3 includes the cylindrical portion 31 and the end surface portion 32, so as to cover not only the heat insulation function but also the second heat retaining member 2 in the hermetically mounted state, and the hermetically sealed second heat retaining member 2. It fulfills the function of damage protection.

  As described above, the exposed insulation pipe portion of the cold insulation pipe is hermetically covered with the first heat insulation member 1 and the second heat insulation member 2 so as not to create a space through which the outside air can enter, and does not cause internal condensation. The cold insulation treatment was realized.

  Further, the present invention is not limited to the above-mentioned flange joint connection location, but can also be applied to an exposed pipe line (exposed joint range) interposing the operation valve G. The heat retaining member is shown in FIG. As described above, the first heat retaining member 4, the second heat retaining member 5, and the outer heat retaining member 6 having a shape corresponding to the operation valve intervening pipeline are configured.

  The 1st heat retention member 4 is formed with the foam rubber heat insulating material 41 which stuck the aluminum glass cloth 42 to the outer peripheral surface similarly to the 1st heat retention member 1 of above-described embodiment, The upper cylindrical portion includes an inner concave portion 44 in which the flange portion is accommodated, a pipe covering portion 43 that covers the exposed pipe A, and an upper cylindrical portion 45 that covers a peripheral portion of the rising operation portion G1 of the operation valve G. 45 is formed by being vertically divided into two in the tube axis direction, and a connecting tongue side 46, a hook-and-loop fastener 47, and a hook-and-loop fastener receiving portion 47a are appropriately provided at the separation portion.

  Similarly to the first heat retaining member 4, the second heat retaining member 5 is formed by laminating a sheet member of a foam rubber heat insulating material 51 having an aluminum glass cloth 52 attached to the outer peripheral surface. 4, a cylindrical portion 53 that covers the outer peripheral surface of the exterior material B, and an upper cylindrical portion 54 that covers the outer periphery and upper end surface of the upper cylindrical portion 45.

  Of course, the second heat retaining member 5 is also divided in the same manner as the first heat retaining member 4 and is provided with a connecting tongue, a hook-and-loop fastener, and a hook-and-loop fastener receiving portion at the separation portion.

  The outer heat retaining body 6 has the same structure as the outer heat retaining member 3 and is formed by filling a foamed rubber heat insulating material 62 into a waterproof cloth bag body 61 formed of a fluorine-coated glass cloth. Is provided with a cylindrical portion 63, an end surface portion 64, and an upper covering portion 65 that cover the outer peripheral surface and the end surface of the second heat retaining body 5 with an appropriate thickness when the second heat retaining body 5 is attached to the conduit. The shape is vertically divided, and a connecting tongue, a hook-and-loop fastener, and a hook-and-loop fastener receiving portion are provided at the separation point.

  Thus, each of the heat retaining members covers the place where the operation valve G of the pipe shown in FIG. 8 is interposed, and the deformation portion in the outer peripheral portion of the main body of the operation valve G is an irregular heat insulating material F such as glass wool. Thus, coating is performed so as to correspond to the shape of the inner concave portion 44 of the first heat retaining member 4.

  Then, the first heat retaining member 4 is placed on the exposed pipe line (exposed joint range), the exposed portion of the pipe A and the covering portion of the indeterminate heat retaining member F are covered, the hook-and-loop fastener 47 and the hook-and-loop fastener receiving portion 47a are connected, The one heat retaining member 4 is attached to the entire exposed joint range other than the operation handle G2 of the operation valve G in a close contact state.

  Next, the second heat retaining member 5 is attached, and the outer heat retaining member 6 is further attached, and only the operation handle G2 of the operation valve G is exposed to perform a cold heat treatment.

  The operation handle G2 exposed from the heat retaining member is not exposed as it is, and the cover 7 made of resin is put on the crown after the cold insulation treatment is finished.

  As described above, the first heat retaining member that covers the exposed joint range, the first heat retaining member, and the pipe exterior, regardless of the pipe configuration of the exposed pipe portion (exposed joint range) of the cold insulation pipe. It is only necessary to have a second heat insulation member that covers the material together and an outer heat insulation member that covers the entire outer surface of the second heat insulation member, thereby realizing a more complete pipeline cold insulation, as well as periodic inspections and failures. It is possible to easily carry out the removing operation and the remounting operation of the heat retaining member from the exposed joint range at the time of repair.

1, 4 1st heat insulation member 2, 5 2nd heat insulation member 3, 6 Outer heat insulation member 11, 21, 34, 41, 51, 61 Foam rubber heat insulating material 12, 22, 42, 52 Aluminum glass cloth 13, 43 Pipe coating Portions 14, 44 Inner recess 33 Bag bodies 15, 25, 36, 38, 46 Connecting tongue pieces 16, 24, 35, 37, 47 Surface fasteners 16a, 24a, 35a, 37a, 47a Surface fastener receiving portion 23 Separating portion 31, 53, 63 Cylindrical portion 32, 64 End surface portion 33, 61 Bag body 45, 54 Upper cylindrical portion 61 Upper covering portion 7 Cover body A Piping B Exterior material C Urethane resin D Flange joint E Bolt / nut F Indeterminate heat insulating material G Operation valve

Claims (5)

  A heat insulation member that covers a predetermined joint range where pipes are exposed in a cold insulation pipe that has been subjected to a predetermined cold insulation treatment, and covers a complex uneven surface such as a bolt head, a bolt shaft, and a nut on a flange portion of the joint. A shape that includes an inner recess corresponding to the shape of the location, and that covers the entire exposed pipe and that covers the entire outer peripheral surface of the first heat insulating member and the outer peripheral surface of the cold insulating pipe. 2nd heat insulation member formed of foam rubber heat insulating material, and a shape covering the entire outer peripheral surface of the first heat insulation member and the outer surface of the cold insulation pipe, and filling the inside of the bag formed of waterproof cloth with appropriate heat insulating material A heat insulating member for piping, comprising: an outer heat insulating member.   The heat insulating member for piping according to claim 1, wherein the first heat insulating member and the second heat insulating member are formed by laminating sheet members each having an aluminum glass cloth adhered to the surface.   The outer heat insulating member is formed by forming a waterproof cloth with fluorine-coated glass cloth and adopting foamed rubber heat insulating material as the heat insulating material, forming it in two parts in the tube axis direction, and connecting one side of the divided 3. A hook-and-loop fastener receiving portion is provided at a position corresponding to the hook-and-loop fastener when the whole is freely opened and closed, provided with a hook-and-loop piece provided with hook-and-loop fasteners at appropriate positions on the outer periphery. Insulation member for piping.   The joint range to be covered is the flange connecting portion of the pipe line, and the first heat retaining member and the second heat retaining member are made tubular as a whole and separated in the tube axis direction so that the whole can be opened and closed. 4. The heat retaining pipe for piping according to claim 2 or 3, wherein the connecting tongue piece having the surface fastener is provided with a surface fastener receiving portion on the other side, and the inner and outer sheet members are separated from each other in a stepped shape in the second heat retaining member. Element.   The joint range to be covered is the operation valve intervening connecting portion of the pipe line, the first heat retaining member, the second heat retaining member, and the outer heat retaining member have a cylindrical shape in the lower part, and an upper cylinder for covering the valve operating part in the upper center. The heat insulating member for piping according to any one of claims 1 to 3, wherein the heat insulating member for piping according to any one of claims 1 to 3 is formed in a shape in which the portion is projected and is divided into two vertically and vertically in the tube axis direction, and an appropriate connection portion is provided at the divided portion.

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