JP4260170B2 - Insulating panel and method for arranging the same - Google Patents

Description

  The present invention provides a heat insulating panel provided with a curved panel body capable of covering the pipe outer peripheral surface by repeatedly mounting and connecting the pipe outer peripheral surface along the circumferential direction and the longitudinal direction. And an arrangement method thereof.

The heat insulation panel, for example, by arranging and covering the outer peripheral surface of a tubular heat insulation object such as a hot water supply pipe by repeatedly mounting and connecting, the heat from the heat insulation object to the outside is covered. It is possible to cut off the release and reduce the heat loss. For example, in a nuclear power plant, it is used on the outer peripheral surface of the coolant pipe for circulating the reactor coolant.
At a nuclear power plant, reactor coolant is circulated between the reactor vessel and a loop chamber equipped with a circulation pump, and the reactor coolant is boiled by the heat of the nuclear fuel (core) in the reactor vessel. The steam is generated and the steam is sent to the generator turbine to generate electricity.
The reactor vessel and the loop chamber are connected via a coolant pipe through which the reactor coolant flows. In addition, a concrete wall (thickness of about 1.2 m to 1.8 m) for shielding radiation is provided between the reactor vessel and the loop chamber. Therefore, a through hole is provided in the concrete wall, The coolant pipe is penetrated.
Although most of the outer peripheral surface of the coolant pipe can be covered with a heat insulating panel to reduce heat dissipation (heat insulation work), as shown in FIG. 11, the coolant pipe 7 in the through hole As for the outer peripheral surface, since the wall thickness of the concrete wall 13 is thick and the gap between the coolant pipe 7 and the inner wall of the through hole 14 is very narrow, it is difficult to carry out the heat insulation construction by the heat insulating panel 1. The present condition is that a fiber heat insulating material 18 such as rock wool is manually pushed into the gap.
Such a prior art is widely known among those skilled in the art, and since there is no patent document or the like that is mentioned in detail, a prior art document cannot be disclosed.

  For this reason, the outer peripheral surface of the coolant pipe in the through hole must be filled by manually pushing in the fiber heat insulating material. This heat is easily transferred to the concrete wall through the filled fibrous heat insulating material, and thus there has been a problem that the strength of the concrete wall is lowered by the heat.

  The present invention has been made in view of the above circumstances, and in a pipe that penetrates a through hole provided in a wall, the pipe outer peripheral surface in the through hole can be covered quickly and reliably by a simple operation. In addition, the present invention provides a heat insulating panel that can reliably prevent heat from entering and leaving the pipe through the wall, and a method for arranging the same.

  The first characteristic configuration of the present invention is a curved shape that can cover the pipe outer peripheral surface by arranging a plurality of sheets by repeating assembly connection along the circumferential direction and the longitudinal direction on the pipe outer peripheral surface. A heat insulating panel provided with a panel body, wherein a rotating body that is in contact with the outer peripheral surface of the pipe, is slidable in the longitudinal direction thereof, and is rotatable in the circumferential direction of the outer peripheral surface of the pipe is provided on the inner surface of the panel main body It is in that it is a heat insulation panel.

[Action and effect]
A rotating body that is in contact with the outer peripheral surface of the pipe, is slidable in the longitudinal direction thereof, and is rotatable in the circumferential direction of the outer peripheral surface of the pipe is provided on the inner surface of the panel body. In the pipe passing through the provided through hole, the outer peripheral surface of the pipe in the through hole can be quickly and reliably covered with the heat insulating panel of the present invention.
That is, for example, even if the gap provided between the outer peripheral surface of the pipe and the inner wall of the through hole is very narrow so that it is difficult for humans to enter and work, at least the insulation panel of the present invention Since the rotating body is provided on the inner surface of the panel body simply by setting the thickness to be slightly smaller than the gap, the main body extends along the circumferential direction and the longitudinal direction of the outer peripheral surface of the pipe outside the through hole. By assembling and connecting the heat insulating panel of the invention, and repeating the operation of moving and arranging the heat insulating panel that is assembled and connected into the through hole while rolling the rotating body, quickly and reliably The outer peripheral surface of the pipe in the through hole can be covered.
In addition, it is possible to provide a gap between the heat insulation panel of the present invention and the inner wall of the through hole, and it is possible to reliably prevent heat from entering and leaving the pipe to the wall. Therefore, for example, when the pipe is a very high-temperature pipe such as a coolant pipe of a nuclear power plant, it is difficult for heat from the coolant pipe to be transmitted to the wall, and a reduction in the strength of the wall due to heat can be prevented.

A second characteristic configuration of the present invention is that the rotating body is a sphere.
[Action and effect]
Since the rotating body is a spherical body, the contact with the outer peripheral surface of the pipe is a point contact with less friction. As a result, the heat insulating panel of the present invention can be more easily moved with less resistance, and the outer peripheral surface of the pipe is hardly damaged. In addition, there is little heat conduction from the outer peripheral surface of the pipe to the heat insulation panel, and heat insulation can be maintained high.

In the third characteristic configuration of the present invention, the panel main body contains at least one selected from the group consisting of glass wool, rock wool, silica powder, calcium silicate, and metal foil in a rectangular casing. In the point.
[Action and effect]
Glass wool, rock wool, silica powder, and calcium silicate have low thermal conductivity and can form voids in the interior. Therefore, the heat insulation panel of the present invention containing these materials has excellent heat insulation performance. Can demonstrate. In addition, the metal foil can block the radiant heat, and can be installed so as to form a plurality of spaces in the heat insulating panel so as to provide gaps. The thermal insulation panel can also provide excellent thermal insulation performance.

The 4th characteristic structure of this invention exists in the point which provided the buckle type | mold connection part which enables the connection of an adjacent heat insulation panel in the said panel main body when performing assembly | attachment connection of a heat insulation panel.
[Action and effect]
The buckle-type connecting part that enables connection between adjacent heat insulation panels is provided in the panel body, so that the heat insulation panel can be assembled and connected more quickly and reliably, and the heat insulation panel can be removed freely. Therefore, for example, replacement work of an aged and deteriorated heat insulation panel can be performed quickly and easily, and in particular, in the heat insulation construction of a reactor pipe, the radiation exposure can be reduced.

According to a fifth feature of the present invention, the rotating body is attached to the panel body so as to be movable in a perspective direction with respect to the outer peripheral surface of the pipe, and is provided with an urging means that can urge the rotating body toward the outer peripheral surface of the pipe. In the point.
[Action and effect]
The rotating body is attached to the panel main body so as to be movable in the perspective direction with respect to the outer peripheral surface of the pipe, and is provided with an urging means that can urge the rotating body toward the outer peripheral surface of the pipe. Even when there is a design error that is somewhat smaller than the inner diameter of the heat insulation panel when it is attached and the rotating body and the outer peripheral surface of the pipe are difficult to come into contact with each other, the rotating body is Since it is biased toward the outer peripheral surface of the pipe and can always abut against the outer peripheral surface of the pipe, the heat insulating panel can be smoothly moved into the through hole when the heat insulating panel is installed, and can be smoothly and quickly moved. The outer peripheral surface of the pipe in the through hole can be covered.

A sixth characteristic configuration of the present invention is that it includes an overlap member that can cover a joint between the adjacent heat insulation panels from the outside of the panel body when a plurality of heat insulation panels are arranged on the outer peripheral surface of the pipe. .
[Action and effect]
Equipped with an overlap member that can cover the joints between adjacent heat insulation panels from the outside of the panel body when multiple heat insulation panels are arranged on the outer peripheral surface of the pipe, so it is even more effective to release and penetrate heat from the joints Can be prevented.

A seventh characteristic configuration of the present invention is that a plurality of the rotating bodies are provided on the inner surface of the panel body in the longitudinal direction of the pipe.
[Action and effect]
Since a plurality of rotating bodies are provided on the inner surface of the panel body in the longitudinal direction of the pipe, when the heat insulating panel of the present invention is disposed on the outer peripheral surface of the pipe, the posture of the heat insulating panel can be further stabilized, and the outer periphery of the pipe Even when the heat insulation panel assembled and connected to the surface is moved along the longitudinal direction of the pipe, the heat insulation panel assembled and connected is hardly rattled in the longitudinal direction of the pipe and can be moved smoothly. As a result, the assembly and connection of the heat insulation panels can be further facilitated, the installation work can be speeded up, the work efficiency can be improved, and the radiation exposure can be reduced particularly in the heat insulation construction of the reactor piping.

An eighth characteristic configuration of the present invention is the heat insulation panel disposition method according to any one of claims 1 to 7, wherein the heat insulation panel is disposed by being assembled and connected to the outer peripheral surface of the pipe. A guide rail member capable of suppressing rotational movement of the pipe outer peripheral surface in the circumferential direction is fixed to the pipe outer peripheral surface along the longitudinal direction, and then the heat insulating panel is disposed by the heat insulating panel disposing method. There is a point.
[Action and effect]
Since the guide rail member can suppress the rotational movement of the outer peripheral surface of the pipe, which is assembled and connected to the outer peripheral surface of the pipe, in the circumferential direction, the desired heat insulating panel is provided at a predetermined position of the pipe. It becomes possible.
For example, in the case of piping installed in the lateral direction, it is not always necessary to provide the urging means in all the heat insulating panels provided. That is, the heat insulation panel disposed on the upper outer peripheral surface of the pipe does not need to be provided with an urging means because the rotating body can always come into contact with the outer peripheral surface of the pipe due to the pressing effect due to its own weight, and the manufacturing cost for that. Can be reduced.
Therefore, on the outer peripheral surface on the upper side and the lower side of the pipe, it is possible to separately arrange a heat insulating panel having a rotating body that does not have a biasing means and a heat insulating panel having only a rotating body having a biasing means. It becomes possible, and it becomes possible to aim at a significant cost reduction in arrangement | positioning of a heat insulation panel.

Embodiments of the present invention will be described below with reference to the drawings.
Embodiment
FIG. 1 is an external perspective view of the present invention (heat insulation panel 1A). 1A and 1B show the back side and the front side of the heat insulation panel, respectively. The heat insulating panel 1A is made of stainless steel such as a panel body 2 (end closure (short plate 2a), side closure (long plate 2b), inner plate 2c, outer plate 2d) that is curved along the outer peripheral surface of the pipe to be insulated. A curved rectangular casing made of a plate material).
As shown in FIG. 1 (a), the inner plate 2c (inner surface) of the panel body has two types of contact portions 3a and 3b, each having two different attachment methods of the rotating body 8 (ball bearing). It is provided side by side.
Further, as shown in FIG. 1 (b), the outer plate 2d of the panel main body 2 has a buckle type connecting portion 5 (male member 5a (one place)) used when assembling and connecting the heat insulating panels 1 to each other. And the female member 5b (two locations)) and the overlapping member 4 (1) which can cover the joints between the adjacent heat insulating panels 1 from the outside of the panel body 2 when a plurality of heat insulating panels 1 are arranged on the outer peripheral surface of the pipe. Are provided).
In addition, the heat insulation panel 1A of the present invention is obtained by replacing each row of the contact portions 3a and 3b (that is, on the short plate 2a side to which the overlap member 4 is attached in FIG. 1 (a)). , Provided with a row of contact portions 3b).

  FIG. 2 is an external perspective view of the present invention (heat insulation panel 1B) (A: back side, b; part of front side and back side). About the structure of the heat insulation panel 1B, it is the same as that of the above-mentioned heat insulation panel 1A except the point that all the contact parts (4 places) provided in the inner board 2c (inner surface) of the panel main body are the contact parts 3b. It is.

FIG. 3 is an external perspective view (A: back side, B: front side) of the present invention (heat insulating panel 1C). As for the configuration of the heat insulating panel 1C, as shown in FIG. 4 (a), the abutting portions 3a and 3b are respectively provided on the inner plate 2c (inner surface) of the panel body. 3 (b), the buckle type connecting portion 5 (male member 5a (two places) and female member 5b (two places)) and the overlap member 4 ( 2 points) is the same as the above-described heat insulation panel 1A except for the point.
The heat insulating panel 1C of the present invention is obtained by replacing the contact portions 3a and 3b (that is, in contact with the short plate 2a side to which the overlap member 4 is attached in FIG. 3 (a)). Including the portion 3b).

  FIG. 4 is an external perspective view of the present invention (heat insulation panel 1D) (A: back side, b; part of front side and back side). Regarding the configuration of the heat insulation panel 1D, the contact portions (two places) provided on the inner plate 2c (inner surface) of the panel body 2 are all the contact portions 3b, and the heat insulation panel 1C described above. It is the same.

FIG. 5 is a cross-sectional view of the heat insulating panel 1A when the heat insulating panel 1A along the arrow X in FIG. As shown in FIG. 5, an appropriate heat insulating material 9 and a reflecting plate 10 that reflects heat can be stored inside the panel body 2, and in some cases, lead for shielding radiation. A board etc. can also be accommodated (not shown). Examples of the heat insulating material 9 include, but are not limited to, glass wool, rock wool, silica powder, calcium silicate, and the like, and various heat insulating materials can be arbitrarily combined as necessary. Can also be used.
As shown in FIG. 5, two types of contact portions 3 a and 3 b that are different from each other in how the ball bearing 8 is attached are provided on the inner plate 2 c (inner surface) of the panel body.
The abutting portion 3a is obtained by fitting the ball bearing 8 as it is into a spherical installation space 12 provided in the inner plate 2c and fixing it.
On the other hand, as shown in FIG. 6 (a), the contact portion 3b is attached to a ball bearing 8 with a spring member 11 (biasing means) produced by bending an appropriate metal plate in a step shape. 11 is fixed by spot welding to a box-shaped installation space 12 provided on the inner plate 2c. At this time, the ball bearing 8 is supported so as to slightly protrude from the installation space 12 so as to be movable in a perspective direction with respect to the outer peripheral surface 7 a of the pipe 7.
When the heat insulating panel 1 is disposed on the outer peripheral surface 7a of the pipe, when there is some design error, the ball bearing 8 of the contact portion 3a may not contact, but as shown in FIG. Since the ball bearing 8 of the abutting portion 3b is urged toward the pipe outer peripheral surface 7a by the action of the spring member 11 (biasing means), it can always abut against the pipe outer peripheral surface 7a.

Next, a procedure for covering the outer peripheral surface 7a of the pipe in the through hole 14 using the above-described heat insulating panels 1A to 1D will be described.
FIGS. 7-9 has shown the mode that heat insulation panel 1A-1D is arrange | positioned to the piping 7. FIG.
7-9, the piping 7 is installed so that the through-hole 14 provided in the horizontal direction of the concrete wall 13 may be penetrated. In addition, although the clearance gap S provided between the outer peripheral surface 7a of the piping 7 and the through-hole 14 is a magnitude | size that it is difficult for a person to enter and work, the heat insulation panel (1A-1D of this invention). )). Further, four heat insulating panels (1A to 1D) of the present invention are arranged in the circumferential direction of the pipe 7, and the length of the width of the heat insulating panel of the present invention (the long side of the short plate 2a) is the pipe. The length is such that it does not interfere with the support structure (not shown) of the pipe 7 such as a receiving tool or a pipe suspending tool and can easily move into the through hole 14.

  First, the band member 16 in which the two guide rail members 15 are welded is attached to the pipe portion outside the through hole 14 so as to be wound around the outer peripheral surface 7a of the pipe. At this time, the two guide rail members 15 are fixed to the upper side of the pipe outer peripheral surface 7 a in parallel along the axis of the pipe 7. The guide rail member 15 does not need to be provided over the entire length in the longitudinal direction of the pipe 7, and the length of the guide rail member 15 is longer than at least the width of the heat insulating panel 1 (the long side of the short plate 2a). When the heat insulating panel 1 (ring-shaped heat insulating panel 17) is moved and the heat insulating panel 1 in the second row is disposed, the guide rail member 15 rotates the pipe outer peripheral surface of the ring-shaped heat insulating panel 17 in the circumferential direction. Any length that can be supported so as to suppress movement may be used.

Next, as shown in FIG. 8 (a), the heat insulating panels 1A and 1B are placed on the upper side of the pipe outer peripheral surface 7a to which the guide rail member 15 is fixed (upper semicircular portion of the pipe 7 cross section viewed from the axial direction). ) And two on the lower side of the pipe outer peripheral surface 7a (lower semicircular portion of the pipe cross section viewed from the axial direction) (in the case of the heat insulation panel 1A, each row of the contact portions 3a and 3b) ) And replace them with each other).
And the overlap member 4 provided in each heat insulation panel (1A and 1B) can coat | cover the joint between adjacent heat insulation panels (1A and 1B) from an outer side, Short plates 2a of each heat insulation panel Match. Finally, the male member 5a and the female member 5b of the buckle type connecting portion provided on the outer plate of each heat insulating panel are engaged and tightened to connect each heat insulating panel in the circumferential direction of the pipe 7 to form a ring shape. The heat insulation panel 17 is formed (hereinafter, for the sake of convenience, the connection by such a buckle type connection portion is referred to as an assembly connection).

Next, the ring-shaped heat insulation panel 17 is moved slightly toward the through hole 14 to provide a space for installing the next heat insulation panels 1C and 1D.
Then, as in the case of the above-described heat insulation panels 1A and 1B, the heat insulation panels 1C and 1D are arranged on the upper side of the pipe outer peripheral surface 7a to which the guide rail member 15 is fixed (upper half circle of the pipe cross section viewed from the axial direction). Part) and two pipes on the lower side of the pipe outer peripheral surface 7a (lower semicircular part of the pipe cross section viewed from the axial direction) so as to be adjacent to the ring-shaped heat insulation panel 17 (heat insulation panel 1C) Are arranged by replacing the contact portions 3a and 3b).

The long plates 2b of the heat insulating panels 1C and 1D are brought into contact with the long plates 2b of the heat insulating panels 1A and 1B of the ring-shaped heat insulating panel 17 previously arranged, and assembled and connected in the longitudinal direction of the pipe 7, and then the pipe 7 Also assembled and connected in the circumferential direction. At this time, the overlap member 4 provided in the heat insulation panels 1C and 1D is made to coat | cover the joint between adjacent heat insulation panels (1A-1D) from the outer side.
In addition, before the heat insulation panels 1C and 1D are assembled and connected in the circumferential direction of the pipe 7, the heat insulation panels 1C and 1D are assembled and connected to the heat insulation panel 1A or 1B of the ring-shaped heat insulation panel 17 previously arranged. As shown in FIGS. 3 and 4, since there are only two contact portions 3a and 3b, when installed on the pipe 7, the posture is unstable in the longitudinal direction of the pipe 7, Assembling and connecting the directions becomes difficult. Therefore, if it is assembled and connected in the longitudinal direction first, the posture is stabilized, so that the subsequent assembly and connection in the circumferential direction can be easily performed. Of course, when all the heat insulating panels (1A to 1D) to be arranged are heat insulating panels (1A and 1B or 1B only) having a stable posture on the pipe outer peripheral surface 7a, such a restriction is eliminated. Since the number of contact portions 3a and 3b provided on the heat insulating panel 1 is increased and the manufacturing cost is increased, the heat insulating panel 1 can be significantly increased in cost. Therefore, according to the configuration of the present embodiment using the heat insulating panels 1A to 1D, it is possible to significantly reduce the cost.
Next, as shown in FIG. 8 (b), the heat insulation panels (1 </ b> A to 1 </ b> D) assembled in this way are moved slightly toward the through hole 14, and the next heat insulation panels 1 </ b> C and 1 </ b> D are further moved. Assemble and connect.
Thereafter, in the same manner as described above, by repeating the assembly connection of the heat insulation panels 1C and 1D and the movement of the assembled heat insulation panel (ring-like heat insulation panel 17), as shown in FIG. The pipe outer peripheral surface 7a in the through hole 14 can be covered.

FIG. 10 is a cross-sectional view of the pipe 7 after the heat insulating panels 1A to 1D of the present invention are disposed when viewed from the axial direction.
As shown in FIG. 10, the rotating body 8 of the contact portion 3a of the heat insulating panels 1A and 1C can always contact the outer peripheral surface 7a of the pipe due to the pressing effect due to the weight of the heat insulating panels 1A and 1C. Further, the rotating body 8 of the abutting portion 3b in the heat insulating panels 1A to 1D can always abut in a state of being urged toward the pipe outer peripheral surface 7a by the action of the spring member 11 (biasing means).
The installation width and height of the guide rail member 15 are configured such that the contact portions 3a of the heat insulating panels 1A and 1C can be locked by the guide rail member 15. For this reason, the heat-insulating panels 1A to 1D, which are assembled and connected to the pipe outer peripheral surface 7a, are prevented from rotating in the circumferential direction of the pipe outer peripheral surface 7a, and are provided with a rotator 8 having no urging means. The heat insulation panels (heat insulation panels 1A and 1C) can always be disposed above the pipe outer peripheral surface 7a.

[Other Embodiments]
1. In the above-described embodiment, the heat insulation panel of the present invention is applied to the pipes installed in the horizontal direction, but the present invention is not limited to this, and the heat insulation of the present invention is also applied to the pipes installed in the vertical direction. A panel (for example, heat insulation panels 1B and 1D) can be applied.
2. In the inner plates of the panel main bodies of the heat insulating panels 1A and 1B of the above-described embodiment, two rows are provided along the longitudinal direction of the piping, the rows including two rotating bodies provided side by side along the circumferential direction of the piping. Although it is set as the structure currently provided, if it is the structure which provides a some rotary body in the longitudinal direction of piping, it will not be limited to this. For example, a plurality of rotating bodies provided in the longitudinal direction of the pipe are not provided side by side along the longitudinal direction of the pipe, but may be provided at different positions in the circumferential direction of the pipe. good.
3. Examples of pipes to which the heat insulating panel of the present invention can be applied include various reactor pipes (for example, coolant pipes) in nuclear power plants, and various pipes (hot water supply pipes and air conditioners) that can be installed in general factory equipment. And the like), but is not limited to these.

External perspective view of the heat insulation panel 1A of the present invention External perspective view of heat insulation panel 1B of the present invention External appearance perspective view of heat insulation panel 1C of the present invention External appearance perspective view of heat insulation panel 1D of this invention Sectional drawing of the heat insulation panel 1A of this invention Sectional drawing of the contact part 3b of the heat insulation panel 1 of this invention The perspective view which shows a mode that heat insulation panel 1A-1D of this invention is arrange | positioned. The side view which shows a mode that the heat insulation panels 1A-1D of this invention are arrange | positioned. The side view which shows a mode that the piping outer peripheral surface in the through-hole was coat | covered with the heat insulation panels 1A-1D of this invention. Sectional drawing when piping after heat insulation panel 1A-1D of this invention is arrange | positioned is seen from the axial center direction Side view showing a method for coating the outer peripheral surface of a pipe in a conventional through hole

Explanation of symbols

1 Insulation panel 2 Panel body 2a End closure (short plate)
2b Side closure (long plate)
2c Inner plate 2d Outer plate 3a, 3b Abutting part 4 Overlap member 5 Buckle type connecting part 5a Male member 5b Female member 7 Pipe 7a Pipe outer peripheral surface 8 Rotating body 9 Heat insulating material 10 Reflecting plate 11 Spring member 12 Installation space 13 Concrete Wall 14 Through-hole 15 Guide rail member 16 Band member 17 Ring-shaped heat insulation panel 18 Fiber heat insulating material

Claims (8)

A heat insulating panel provided with a curved panel body capable of covering the pipe outer peripheral surface by repeatedly mounting and connecting the pipe outer peripheral surface along the circumferential direction and the longitudinal direction. ,
A heat insulating panel in which a rotating body that is in contact with the outer peripheral surface of the pipe, is slidable in the longitudinal direction thereof, and is rotatable in the circumferential direction of the outer peripheral surface of the pipe is provided on the inner surface of the panel body.   The heat insulation panel according to claim 1, wherein the rotating body is a sphere.   3. The panel body according to claim 1, wherein the panel body contains at least one selected from the group consisting of glass wool, rock wool, silica powder, calcium silicate, and metal foil in a rectangular casing. The heat insulation panel as described in the item.   The heat insulation panel according to any one of claims 1 to 3, wherein a buckle type connection portion that enables connection of adjacent heat insulation panels is provided in the panel body when the heat insulation panel is assembled and connected.   The rotator is attached to the panel body so as to be movable in a perspective direction with respect to the outer peripheral surface of the pipe, and is provided with an urging means that can urge the rotator toward the outer peripheral surface of the pipe. The heat insulation panel as described in the item.   6. The apparatus according to claim 1, further comprising an overlap member capable of covering a joint between the heat insulating panels adjacent to each other from the outside of the panel body when a plurality of heat insulating panels are disposed on the outer peripheral surface of the pipe. Insulation panel.   The heat insulation panel of any one of Claims 1-6 in which the said rotary body is provided with two or more by the inner surface of the said panel main body in the longitudinal direction of the said piping.   It is the arrangement | positioning method of the heat insulation panel described in any one of Claims 1-7, Comprising: In the circumferential direction of the said piping outer peripheral surface of the said heat insulating panel arrange | positioned by being assembled | attached and connected to the said piping outer peripheral surface. A heat insulating panel disposing method of disposing the heat insulating panel after fixing a guide rail member capable of suppressing the rotational movement of the tube to the outer peripheral surface of the pipe along the longitudinal direction thereof.

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