JP2000337588A - Heat insulating panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make easily attachable and detachable a heat insulating panel even in a narrow space by constituting a heat insulating panel in which a plurality of panel main bodies formed into a partial cylindrical shapes divided in the lengthwise direction and the circumferential direction are connected to each other adjacent ones by connecting members to surround heat insulated object devices. SOLUTION: This heat insulating panel 1 is constituted by putting side by side a plurality of panel main bodies 2 in the circumferential direction and the longitudinal direction outside a pipe 23A as a cylindrical heat insulated object device. The respective panel main bodies 2 are provided with first connecting members 6 of buckle construction for connecting the adjoining panel bodies 2 in the circumferentical direction to each other, and second connecting members 7 of advancable/retreatable pin construction, on respective edge part for connecting the adjacent panel bodies 2 in the longitudinal direction. The outside part of the panel main body 2 is formed out of metal plate 3 and heat insulating material 4 is provided on the inside part. For improving sealability between the adjoining panel main bodies 2, an overlap made of hoop is provided on two orthogonal crossing sides.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating panel for covering a tubular device to be kept warm, and more particularly to a heat insulating material provided on an inner portion of a panel body having an outer portion formed of a metal plate. Outside the device to be kept warm, the plurality of devices to be kept warm can be covered by arranging a plurality of devices in parallel in the circumferential direction and the length direction, and the panel bodies adjacent in the circumferential direction can be connected to each other freely. A connecting member, and a second connecting member that allows the panel bodies adjacent to each other in the length direction to be freely connected to each other, attached to the panel body, and provided at an end of the panel body adjacent in the length direction. A pin member that can be fitted and connected to the mating hole is provided so as to be able to move back and forth in the length direction, and an evacuation operation mechanism that linearly moves the pin member is provided to constitute the second connection member. Regarding an insulation panel.

[0002]

2. Description of the Related Art The above-mentioned conventional heat insulating panel is, for example, shown in FIG.
As shown in FIG. 2, a panel body 2 having an outer portion made of a metal plate
A heat insulating material is provided inside the panel main body 2, and a plurality of the heat insulating devices 23 are arranged side by side in a circumferential direction and a length direction outside the cylindrical heat insulating device 23.
Is configured to be freely covered. Then, the first connection member 6 that is freely connectable to another panel body 2 adjacent in the circumferential direction of the tubular heat retention target device 23, and the first connection member 6 that is freely connectable to the other panel body 2 adjacent in the length direction. The heat insulating panel 1 is configured by attaching the second connecting member 7 to the panel main body 2. Then, as shown in FIG. 19, the second connection member 7 is provided with an engagement hole 22 provided in a metal receiving member 22 attached to an end of another panel body 2 adjacent in the length direction.
The heat insulation panel 1 is provided with a pin member 17 which can be freely inserted and connected to a, and is provided so as to be able to move back and forth in the length direction, and is provided with an evacuation operation mechanism 8 for operating the pin member 17 linearly. (See, for example, Japanese Patent No. 2655254). The first connecting member 6 is a buckle 6A which is pivotally supported on the panel main body 2 and includes a locking operation member 6a which is detachable from a hook-shaped locking piece 6b fixed to the other panel main body 2. (See FIGS. 1 and 2). The retracting operation mechanism 8 constituting the second connecting member 7 is the same as that shown in FIG.
As shown in FIG. 0, by causing the pin member 17 to retreat by causing it to fall down to the outer surface of the panel main body 2,
A pivot shaft 8b which is pushed out of the pin member 17 to be fitted into the engagement hole 22 and is arranged on the outer surface in a direction orthogonal to the retreating direction of the pin member 17 and along the outer surface.
And a link rod 8c for connecting the lever 8a to the pin member 17 and arranged in parallel with the pivot shaft 8b. In addition, the said 1st connection member 6 is not attached to the said heat insulation panel 1 in the said length direction. The heat insulating panel exemplified above is a device to be covered with a pipe 23A of a nuclear power plant as the heat insulation target device 23, and the heat insulating panel 1 includes the pipe 2
A lead plate 5 for shielding radiation leaking from 3A is provided.

[0003]

SUMMARY OF THE INVENTION The above-mentioned heat insulating panel 1 comprises:
In some cases, some of the pipes may be removed to inspect the pipe 23A. However, in the thermal insulation panel for a nuclear power plant, since a radioactive fluid is present inside the pipe 23A, workers are exposed to the radiation. It is necessary that the attachment and detachment be carried out quickly in order to minimize the risk. Therefore, the buckle 6 </ b> A, which can be attached by attracting the heat insulating panels attached in the circumferential direction and can be easily attached / detached, is adopted as the first connection member 6. However, since the buckle 6A is weak against an external force in a direction in which the heat insulating panel 1 is moved along the outer surface of the pipe 23A, if the buckle 6A is used for the longitudinal connection, the pipe When any heat insulating panel 1 is removed from the heat insulating panels 1 arranged in the length direction and the circumferential direction of the 23A, other heat insulating panels arranged on the same circumference as the removed heat insulating panel 1. The position of the panel 1 on the circumference is unstable, and it has been proposed in FIGS. 19 and 20 to improve this point. However, in the illustrated second connecting member 7, the panel body 2
Pivot shaft 8 arranged on the outer surface of the
Since the lever 8a pivotally supported by the b is operated to swing, the height of the supporting portion for supporting the pivot shaft 8b and the working space enough to raise the lever 8a around the pivot shaft 8b are reduced. Needed around the heat insulation panel 1. Therefore, there is a problem that the operation of connecting and disconnecting the second connecting member 7 (i.e., the operation of the lever 8a) is inconvenient in the case of a pipe arranged in a narrow space at a small interval. Even if the lever 8a is tilted down until it comes into contact with the outer surface of the panel main body 2, the lever 8a protrudes on the outer surface, and there is a possibility that an operator may be caught. In addition, if the worker is carelessly hooked on the lever 8a and causes this, the pin member 17 may be pulled out from the engagement hole 22 and the connection by the second connecting member 7 may be released. .

[0004] Therefore, an object of the present invention is to make it possible to quickly remove and attach a device to be kept warm even if the device to be covered is placed in a small space while facilitating the operation of covering and removing the device. The present invention is to provide a heat insulating panel which is not disconnected even if the contact is made.

[0005]

[Means for Solving the Problems] The first feature of the heat insulation panel according to the present invention is as described in claim 1, wherein the inner portion of the panel body whose outer portion is formed of a metal plate. A heat insulating material is provided on the outside of the tubular heat-retaining device, and the heat-retaining device is configured to be freely coverable by arranging a plurality of devices in a circumferential direction and a length direction thereof in parallel with each other in the circumferential direction. A first connection member that allows the panel bodies to be freely connected to each other, and a second connection member that allows the panel bodies adjacent in the length direction to be freely connected to each other, attached to the panel body,
A pin member that can be fitted and connected to an engagement hole provided at an end of the panel body adjacent in the length direction is provided so as to be able to move back and forth in the length direction, and the pin member is linearly moved back and forth. A heat-insulating panel comprising a second connecting member provided with a retracting operation mechanism for performing rotation operation, the rotation operation portion being rotatable around a fixed axis crossing the surface of the metal plate; The present invention is characterized in that a conversion mechanism for converting a rotary motion accompanying a rotation operation of the unit into a linear motion of the pin member is provided to constitute the retracting operation mechanism. According to a second feature of the heat insulating panel according to the present invention, as described in claim 2, a plane portion having a fixed axis intersecting the surface of the metal plate as a normal line is provided in the rotating operation part in the first feature configuration. Forming and projecting on the plane portion,
A spiral ridge is formed, and a plurality of protrusions are formed on the pin member so as to be freely fit between the spiral ridges, and at least one protrusion between adjacent ones of the protrusions is formed. The conversion mechanism is configured by holding the rotating operation portion and the pin member respectively in a state where the ridge portion is located at a location. According to a third feature of the heat insulating panel according to the present invention, as described in claim 3, a plane portion having a fixed axis crossing the surface of the metal plate as a normal line is provided in the rotating operation portion in the first feature configuration. Forming a guide concave portion having a spiral guide surface on the side surface, and forming a protruding portion on the pin member capable of contacting the guide surface, and forming the protruding portion in the guide concave portion. In this state, the conversion mechanism is configured by holding the rotating operation section and the pin member respectively. According to a fourth characteristic configuration of the heat insulating panel according to the present invention, as described in claim 4, the guide concave portion provided in the rotary operation portion in the third characteristic configuration is formed by a guide groove portion formed of a spiral groove, and The conversion mechanism is configured by holding the rotating operation portion and the pin member respectively with the protrusion formed on the member positioned in the guide groove. A fifth characteristic configuration of the heat insulating panel according to the present invention is as described in claim 5, wherein the rotating operation part in the first characteristic configuration is a fixed axial center crossing the surface of the metal plate at one end side of the panel body. A cam contact portion formed of a cam member rotatably supported around the pin, and a pin member having a cam contact portion capable of contacting any one of the cam surfaces in the longitudinal direction of the device to be heated with respect to the cam member. And forming the conversion mechanism by holding the rotating operation unit and the pin member in a state where the cam contact unit can contact the cam surface. According to a sixth aspect of the heat insulating panel of the present invention, as in claim 6, the cam member in the fifth aspect is formed as an eccentric disk cam, and the cam contact portion is arranged in the longitudinal direction of the device to be kept warm. Is formed so as to be freely contactable with the cam surfaces on both sides of the camshaft.
According to a seventh characteristic configuration of the heat insulating panel according to the present invention, as in claim 7, the cam contact portion in the fifth characteristic configuration is provided on the retreat side of the pin member in the longitudinal direction of the device to be kept warm of the cam member. The present invention is characterized in that the pin member is provided with a biasing means which is formed so as to be capable of contacting and which is capable of biasing the cam contact portion toward the cam member. An eighth feature configuration of the heat insulating panel according to the present invention is as described in claim 8, wherein the rotary operating portion is capable of rotating the rotary operating portion in any of the first to seventh feature configurations. The turning operation unit is provided with a square hole into which a separate operation device can be inserted separately and the rotation of the operation device can be transmitted to the turning operation unit. According to a ninth feature of the heat insulation panel according to the present invention, as described in claim 9, the turning operation unit in the eighth feature is arranged inside the panel main body, and a metal plate on an outer wall is provided.
The point is that an operation hole through which the evacuation operation tool can be inserted is provided.
The tenth characteristic configuration of the heat insulating panel according to the present invention is as described in claim 1.
As described in Item No. 0, a lead plate for radiation shielding is internally provided in the panel main body in any of the first to ninth characteristic configurations. An eleventh characteristic configuration of the heat insulating panel according to the present invention is, as described in claim 11, an inner periphery of the panel main body in any one of the first to ninth characteristic configurations on a side arranged close to the device to be heated. The surface is formed of a lead plate for radiation shielding.

According to the first aspect of the heat insulating panel according to the present invention, the operation of quickly connecting and disconnecting the second connecting member is easy, and the connection state is stable. Can be maintained. That is, the rotation operation unit is
By being formed to be rotatable around a fixed axis that intersects the surface of the metal plate that forms the outer peripheral surface of the panel body, even if an operation handle that turns this turning operation part is attached,
Since it rotates along the surface of the metal plate, a large space for operating the operation handle is not required. Also,
Since a conversion mechanism is provided for converting the turning operation of the turning operation section into the retraction movement of the pin member, even if an external force in the direction of retreating the pin member acts on the pin member, the turning operation section is Rotation can be prevented, and the connected state can be maintained. According to the second feature configuration of the heat insulating panel according to the present invention, the connection between the panel bodies by the second connection member is further stabilized while the operation and effect of the first feature configuration are exhibited. That is, the rotating operation portion and the pin member are held by sandwiching the spiral ridge formed on the flat portion formed on the rotating operation portion between the plurality of protrusions formed on the pin member. Therefore, the pin member does not move out and out unless the rotation operation section is rotated. Therefore, it is possible to stably maintain the connected state. Further, since the structure of the conversion mechanism is simple and the dimensional accuracy does not need to be increased, the retracting operation mechanism can be manufactured at low cost. According to the third characteristic configuration of the heat insulating panel according to the present invention,
In the operation and effect of the first characteristic configuration, the connection between the panel bodies by the second connection member is further stabilized. That is, in a state where the projecting portion of the pin member is brought into contact with the spiral guide surface of the turning operation portion, the turning operation portion and the pin member are held, and the pin member is moved in at least one direction. Since the movement of the pin member is restricted, the pin member does not move out and out unless the rotation operation portion is rotated. Therefore,
It is possible to stably maintain the connected state. Also,
Since the structure of the conversion mechanism is simple and the dimensional accuracy does not need to be increased, the retracting operation mechanism can be manufactured at low cost. According to the fourth aspect of the heat insulating panel of the present invention, in the operation and effect of the third aspect, the connection between the panel bodies by the second connecting member is further stabilized. That is, by locating the protrusion of the pin member in the spiral guide groove formed in the rotating operation portion, the protrusion can contact the guide surfaces on both sides of the guide groove. The member can be moved in both directions. According to the fifth feature configuration of the heat insulating panel according to the present invention, it is possible to lock the rotating operation unit while exhibiting the operation and effect of the first feature configuration. That is, the pin member can be moved according to the movement of the cam surface at the position where the cam contact portion of the pin member contacts. Therefore, if a concave portion is provided in the maximum diameter portion of the cam surface, the cam contact portion acts as a lock of the cam. According to the sixth aspect of the heat insulation panel of the present invention, the pin has a function of the fifth aspect, and the pin can be rotated in either direction by the half rotation of the rotating operation part. The member can be moved in and out.
According to the seventh aspect of the heat insulating panel of the present invention,
In the operation and effect of the fifth feature, the connection releasing operation for retracting the pin member is performed via the cam member, and the connection operation for engaging the pin member in the engagement hole is performed via the urging means. Therefore, both the connection operation and the connection release operation can be performed quickly while the connection state can be stably maintained. According to the eighth aspect of the heat insulating panel according to the present invention, it is possible to prevent the connection from being erroneously released while exhibiting the operation and effect of any of the first to seventh aspects. In other words, if the rotating operation tool is detached from the rotating operation unit, neither connection nor disconnection can be operated, so that erroneous operation can be prevented. According to the ninth characteristic configuration of the heat insulating panel according to the present invention, it is possible to prevent a worker or the like from being caught while exerting the effect of the eighth characteristic configuration.
That is, since the rotating operation portion is not exposed outside the panel main body, there is no portion where the second connecting member protrudes outside. According to the tenth characteristic configuration of the heat insulating panel according to the present invention, it is possible to shield radiation by the panel main body while exhibiting the operation and effect of any of the first to ninth characteristic configurations. That is, the shield is built in the panel body. In addition, although the lead plate is heavy, it is easy to attach and detach the panel body,
It can be quickly attached and detached even if it is heavy. According to the eleventh characteristic configuration of the heat insulating panel according to the present invention, it is possible to shield radiation by the panel main body while exhibiting the operation and effect of any of the first to ninth characteristic configurations. That is, the shield is built in the panel body. Furthermore, since there is no other component of the panel body between the radiation source and the lead plate, it is possible to prevent radioactive contamination due to radiation exposure of the panel body. Moreover, although the lead plate is heavy, the mounting and dismounting of the panel body is facilitated, so that the lead plate can be quickly attached and detached even if it is heavy.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a heat insulating panel according to the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a main part of a heat retention target device to which a heat insulation panel according to the present invention is attached, and FIG. 2 is a perspective view showing an example of the heat insulation panel shown in FIG. Figure 2
It is a perspective view seen from the inner surface of the heat insulation panel shown in,
FIG. 4 is a perspective view of a main part for explaining an example of a connecting member according to the present invention, FIG. 5 is a two-sided view of the connecting member according to the present invention, and FIG. 6 is a second connecting member shown in FIG. 7 is an operation explanatory view of the second connecting member shown in FIG. 5, and FIGS. 8 and 9 are longitudinal sectional views of the heat insulating panel. 18 to FIG. 20 used in the above-described conventional technique are denoted by the same reference numerals as those shown in FIG. 18 to FIG. And a part of the detailed description is omitted.

A heat insulation panel according to the present invention, as shown in FIG. 1, is a pipe 23A which is an example of a tubular heat insulation target device 23.
The pipe 23A is configured so as to be freely coverable by arranging a plurality of pipes in the circumferential direction and the length direction outside the pipe. A first connecting member 6 for connecting the panel bodies 2 adjacent to each other in the circumferential direction freely, and a second connecting member 7 for connecting the panel bodies 2 adjacent to each other in the length direction freely. 2 can be attached.
In the illustrated example, the second connecting member 7 is mounted inside the panel main body 2. The panel body 2
Is formed by forming a tube into a partially cylindrical shape divided into a length direction and a circumferential direction, and providing a heat insulating material 4 on an inner portion of a panel body 2 having an outer portion formed of a metal plate 3 (see, for example, FIG. 8). . In the example shown in FIGS. 2 and 3, the handle H is attached to the metal plate 3 on the outer peripheral surface 2 a of the panel body 2.
(See FIG. 2).
Further, in order to prevent a gap from being generated between the panel main bodies 2 adjacent to each other, and to prevent heat from leaking from the gap, the overlap L formed of the strip metal is attached to the outer peripheral surface 2a.
By attaching the metal plate 3 to the two edges adjacent to the other panel body 2 forming the metal plate 3, the heat insulation efficiency after the heat insulation work (see FIG. 1) can be increased.

In order to connect the panel body 2 adjacent to the pipe 23A in the circumferential direction, the first connecting member 6 using the buckle 6A is connected to the peripheral edge of the metal plate 3 constituting the outer peripheral surface 2a. Attach to the part. The hook-shaped locking piece 6b of the buckle 6A is mounted on the overlap L, and the locking operation member 6a that is engaged with the hook-shaped locking piece 6b and stopped is mounted on the opposite edge. . These buckles 6A are also used to connect the panel bodies 2 adjacent to each other in the longitudinal direction of the pipe 23A for the convenience of laying the heat insulating panel 1 on the pipe 23A. (See FIG. 2). A spacer S for keeping the heat insulating panel 1 separated from the pipe 23A is bent at a substantially right angle on the metal plate 3 forming the inner peripheral surface 2b of the panel body 2 on the side facing the pipe 23A. If it is formed of a Z-shaped metal piece and attached, for example, as shown in FIG. 17, a band 24 is wound around the pipe 23A in advance, and the locking plate 25 is attached to the band. It can be conveniently used as a temporary fixing body when attaching the panel main body 2 at the time of heat retaining construction.

As shown in FIGS. 1 to 7, for example, the second connecting member 7 fits into an engaging hole 22a of a receiving member 22 provided at an end of the panel body 2 adjacent in the longitudinal direction. A freely connectable pin member 17 is provided so as to be able to move back and forth in the longitudinal direction, and a moving mechanism 8 (for example, see FIG. 4) for linearly moving the pin member 17 is provided. As shown in detail in FIG.
A rotating operation unit 10 that is freely rotatable around a fixed axis Z intersecting with the surface of the metal plate 3, and a rotating motion accompanying the rotating operation of the rotating operating unit 10 is converted into a linear motion of the pin member 17. A conversion mechanism 9 for conversion is provided (see FIG. 7). In the illustrated example, the fixed axis Z is made coincident with a normal line on the surface of the metal plate 3. Then, the conversion mechanism 9
A flat portion 11 having the fixed axis Z as a normal line is formed on the rotating operation portion 10, and a spiral protruding ridge portion 12 projecting on the flat portion 11 is formed, and the pin member is formed. 1
7, a plurality of protrusions 18 that can be freely fitted between the spiral protrusions 12 are formed (see FIG. 6), and the protrusions 18 are provided at least at one position between adjacent protrusions 18. The rotating operation unit 10 and the pin member 17 are configured to be held while the ridges 12 are positioned (see FIG. 5). The rotating operation unit 10 includes a retractable operating tool 16 that can rotate the rotating operation unit 10 and is separate from the rotating operation unit 10.
Is provided, and a square hole 10a capable of transmitting the rotation of the retracting operation tool 16 to the rotating operation unit 10 is provided (FIG. 5 (a)).
reference).

If the hexagonal hole 10a is formed in a hexagonal hole so that a hexagonal wrench can be used as the retracting operation tool 16, a general tool can be used for connecting and disconnecting the second connecting member 7. This is convenient because it can be used. This leaving operation tool 1
As 6, a key handle may be used.
As described above, since the retracting operation tool 16 is formed separately from the rotating operation unit 10, the rotating operation unit 10 is arranged inside the panel main body 2, that is, inside the metal plate 3. A metal plate 3 on an outer wall forming the outer peripheral surface 2a.
If the operation hole 3a through which the evacuation operation tool 16 can be inserted is provided, the panel main body does not have anything protruding on the outer peripheral surface 2a other than the handle H and the first connecting member 6, Excellent heat insulation coating can be applied (see Fig. 1). That is, the first connecting member 6 that connects the panel bodies 2 that are adjacent to each other in the circumferential direction is less likely to come off when the panel body 2 is connected because the circumferential tension is applied. And regarding the buckle 6A connecting the heat insulating panels 1 adjacent to each other in the length direction, even if the buckle 6A comes off, the second connecting member 7
Regulates the relative movement of the heat insulating panels 1 adjacent to each other in the length direction in the circumferential direction and in the direction away from the surface of the heat retention target device 23, so that the second connection member 7 is not disconnected. As long as a part of the heat insulating panel 1 can be reliably prevented from detaching from the heat retention target device 23.

The above-mentioned heat insulation panel 1 is connected to a piping 2 of nuclear power equipment.
For application to 3A, a lead plate 5 for shielding radiation may be provided inside the panel main body 2 as shown in FIG. 8, for example, but as shown in FIG. Inner peripheral surface 2b on the side arranged close to the device 23 for keeping heat
Is more preferably formed by the lead plate 5.
In other words, if the inner peripheral surface 2b is formed of a radiation shield, the heat insulating material 4 inside the panel main body 2 and the metal plate 3 forming the outer wall of the panel main body 2 are exposed to the radiation. Since the heat insulation panel 1 is not likely to have induced radioactivity, the safety of workers outside the control area for radiation can be maintained. Moreover, since the heat insulating panels 1 can be connected to each other with a simple operation, the heat insulating panels 1 can be attached and detached in a short time even when inspecting the nuclear power equipment, and radiation exposure of the worker can be reduced as much as possible.

The above-described heat insulating panel 1 according to the present invention.
According to this, even if the piping is arranged in a narrow space, the work of the worker can be facilitated, and the heat insulating coating can be formed without the possibility that the connection is released even if the worker comes into contact.

Another Embodiment <1> In the above embodiment, an example was described in which the heat insulating panel 1 according to the present invention is coated on the pipe 23A, which is an example of the tubular heat insulation target device 23. The heat retention target device 23 is not limited to the pipe 23A, but may be a container such as a storage tank, and the cross-sectional shape may not be cylindrical. Therefore, the shape of the panel main body 2 is not limited to the partial cylindrical shape, but may be any shape as long as it is along the outer periphery of the heat retention target device 23. <2> In the above-described embodiment, an example in which the outside of the panel main body 2 is entirely made of the metal plate 3 has been described. However, the heat insulating material 4 is exposed on the inner peripheral surface 2b of the panel main body 2. Is also good. <3> In the above embodiment, it has been described that the overlap L formed of the band metal plate may be attached to two adjacent edges of the metal plate 3 forming the outer peripheral surface 2a. Instead of providing the wrap L, a step may be provided on the side end surface of the panel main body 2 so that the adjacent panel main bodies 2 are connected to each other in an eye-open state. <4> In the above embodiment, the buckle 6A is
Although the example of attachment to the longitudinal edge of the pipe 23A on the outer peripheral surface 2a of the panel body 2 has been described, the buckle 6A provided at the longitudinal edge may be omitted.
That is, by connecting the panel main bodies 2 to each other in the circumferential direction of the pipe 23A, the heat insulating panel 1 can be attached to the pipe 23A. What is necessary is to fix the relative position of the direction. <5> In the above embodiment, the conversion mechanism 9
A flat portion 11 having the fixed axis Z as a normal line is formed on the rotating operation portion 10, and a spiral protruding ridge portion 12 projecting on the flat portion 11 is formed, and the pin member is formed. 1
7, a plurality of protrusions 18 that can be freely fitted between the spiral protrusions 12 are formed, and the protrusions 12 are positioned at at least one position between adjacent protrusions 18. The example in which the rotating operation part 10 and the pin member 17 are respectively held and configured in the state in which they are made to move has been described. For example, as shown in FIGS. 10 and 11, the fixed axis Z is taken as the normal line. A guide recess 13 having a spiral guide surface 13a on the side surface is formed in the rotary operation portion 10 having the flat portion 11, and the pin member 17 is provided in the guide surface 13a. In a state in which a protruding portion 19 that can be contacted is formed and the protruding portion 19 is located in the guide recess 13,
The conversion mechanism 9 may be configured by holding the rotating operation unit 10 and the pin member 17, respectively. In this case, as shown in the drawing, the urging mechanism urges the pin member 17 in the pushing direction. Means 21 may be provided, and by urging, accidental disconnection of the second connecting member 7 can be prevented. Further, as shown in FIGS. 12 and 13, the guide recess 13 is formed by a guide groove 13 </ b> A formed of a spiral groove, and the rotation is performed while the protrusion 19 is positioned in the guide groove 13 </ b> A. Operation unit 10 and pin member 17
And the conversion mechanism 9 may be configured by holding each of these.
With this configuration, the position of the pin member 17 is determined by the rotation angle position of the rotation operation unit 10, so that the position of the pin member 17 is stabilized. <6> Instead of the configuration shown in the above <5>, for example, FIG.
As shown in FIG. 4, the rotating operation portion 10 is formed by a cam member 14 rotatably supported around a fixed axis Z on one end side of the panel main body 2, and the cam member 14 is provided on the pin member 17. Member 1
4 is formed with a cam contact portion 20 capable of contacting any one of the cam surfaces 15 in the longitudinal direction.
The conversion mechanism 9 may be configured by holding the rotating operation portion 10 and the pin member 17 respectively in a state where the rotation member 10 can contact the cam surface 15. In the case shown in the figure, the cam contact portion 20 is formed so as to be able to contact the retraction side of the pin member 17 in the length direction of the cam member 14, and the cam contact portion is contacted with the pin member 17. It is desirable to provide, for example, a helical spring 21 </ b> A as the urging means 21 capable of urging the portion 20 toward the cam member 14. Further, as shown in FIG. 15, for example, a cam contact portion 20 capable of contacting the cam member 14 with the cam surface 15 on the pushing side of the pin member 17 in the length direction is provided on the pin member 17. It may be formed. In the case shown, the cam contact portion 20 is
The cam member 14 is formed so as to be able to contact the pushing side of the pin member 17 in the length direction of the cam member 14, and the cam contact portion 20 is urged toward the cam member 14 by the pin member 17. As the urging means 21, for example, the helical spring 2
1A, the conversion mechanism 9 is configured to hold the rotating operation part 10 and the pin member 17 respectively in a state where the cam contact part 20 is brought into contact with the cam surface 15. I just need. <7> Instead of the configuration shown in the above <5> or <6>,
For example, as shown in FIG. 16, the cam member 14 may be formed as an eccentric disk cam, and the cam contact portions 20 may be formed so as to be able to contact the cam surfaces 15 on both sides in the length direction of the pin member 17. <8> In the above embodiment, an example was described in which the square hole 10a provided in the rotating operation part 10 was formed as a hexagonal hole. As long as the rotation is formed so as to be transmitted to the rotation operation section 10, a square hole or another form of square hole may be used. The point is that it is only necessary to be able to perform a turning operation by the retracting operation tool 16 separate from the turning operation unit 10 such as a square wrench, a key handle, or the like.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of a main part of a heat retention target device to which a heat insulation panel according to the present invention is attached.

FIG. 2 is a perspective view showing an example of a heat insulating panel according to the present invention.

FIG. 3 is a perspective view of the heat insulation panel shown in FIG. 2 from another direction.

FIG. 4 is an exploded perspective view of a main part of a partially cut-away view illustrating a second connecting member according to the present invention.

FIG. 5 is a two-sided view of the second connecting member shown in FIG. 4;

6 is an exploded perspective view of the second connecting member shown in FIG.

FIG. 7 is an operation explanatory view of the second connecting member shown in FIG. 4;

FIG. 8 is a longitudinal sectional view showing another example of the heat insulating panel according to the present invention.

FIG. 9 is a longitudinal sectional view showing another example of the heat insulating panel according to the present invention.

FIG. 10 is an exploded perspective view of a main part showing another example of the retracting operation mechanism according to the present invention.

11 is a longitudinal sectional view for explaining the retracting operation mechanism shown in FIG. 10;

FIG. 12 is an exploded perspective view of a main part showing another example of the retracting operation mechanism according to the present invention.

FIG. 13 is a longitudinal sectional view for explaining the retracting operation mechanism shown in FIG. 12;

FIG. 14 is a main part plan view showing another example of the retracting operation mechanism according to the present invention.

FIG. 15 is a plan view of a principal part for explanation showing another example of the retracting operation mechanism according to the present invention.

FIG. 16 is a plan view of a principal part for explanation showing another example of the retracting operation mechanism according to the present invention.

FIG. 17 is an exploded perspective view of a main part of a heat retaining pipe for explaining attachment of a heat insulating panel.

FIG. 18 is a partially cutaway perspective view illustrating a connecting member of a conventional heat retaining pipe.

FIG. 19 is a plan view of a conventional connecting member.

20 is a side view of the connecting member shown in FIG. 19;

[Explanation of symbols]

 2 Panel body 3 Metal plate 3a Operation hole 4 Insulation material 5 Lead plate 6 First connection member 7 Second connection member 8 Ejection / retraction operation mechanism 9 Conversion mechanism 10 Rotating operation unit 10a Square hole 11 Flat part 12 Projection 13 Guide Concave portion 13A Guide groove portion 14 Cam member 15 Cam surface 16 Retracting operation tool 17 Pin member 18 Projecting portion 19 Projecting portion 20 Cam contact portion 21 Biasing means 23 Engagement hole 24 Heat insulation target device Z Fixed shaft center

Claims (11)

[Claims] 1. A heat insulating material is provided on an inner portion of a panel body whose outer portion is formed of a metal plate, and a plurality of heat insulating materials are arranged in parallel in a circumferential direction and a length direction outside a tubular heat insulation target device. A first connection member configured to freely cover the device to be heated and connect the panel bodies adjacent to each other in the circumferential direction, and a second connection configured to connect the panel bodies adjacent in the length direction to each other freely A member is attached to the panel body,
A pin member that can be fitted and connected to an engagement hole provided at an end of the panel body adjacent in the length direction is provided so as to be able to move back and forth in the length direction, and the pin member is linearly moved back and forth. A heat-insulating panel having the second connecting member provided with a retractable operating mechanism, wherein the rotary operating portion is rotatable around a fixed axis crossing the surface of the metal plate; A heat insulation panel comprising a conversion mechanism for converting a rotary motion associated with a rotation operation of a moving operation unit into a linear motion of the pin member to constitute the retracting operation mechanism. 2. A method according to claim 1, wherein the rotating operation portion has a flat portion having a normal to the fixed axis, and a spiral protruding portion protruding on the flat portion. A plurality of freely protruding protrusions are formed between the spiral protrusions, and the rotation is performed in a state where the protrusions are positioned at least at one position between adjacent protrusions. The heat insulation panel according to claim 1, wherein the conversion mechanism is configured by holding a moving operation unit and the pin member, respectively. 3. A flat portion having a normal to the fixed axis in the rotation operation portion, a guide recess having a spiral guide surface on a side surface is formed in the flat portion, and the pin member is formed. A guide portion formed on the guide surface so as to be freely contacted with the guide member, and holding the rotation operation portion and the pin member in a state where the protrusion portion is located in the guide recess, respectively. The heat insulation panel according to claim 1, wherein 4. The guide recess is formed by a guide groove formed of a spiral groove, and the rotation operating portion and the pin member are respectively held in a state where the protrusion is positioned in the guide groove. 4. The heat insulating panel according to claim 3, wherein said conversion mechanism is configured. 5. The rotating operation section is formed by a cam member rotatably supported around the fixed axis at one end side of the panel main body, and is formed on the pin member with respect to the cam member. Forming a cam contact portion capable of contacting any one of the cam surfaces in the length direction, and in a state where the cam contact portion can contact the cam surface, The heat insulation panel according to claim 1, wherein the conversion mechanism is configured by holding each of the pin members. 6. The cam member is formed as an eccentric disk cam,
The heat insulation panel according to claim 5, wherein the cam contact portion is formed so as to be able to contact the cam surfaces on both sides in the length direction. 7. The cam contact portion is formed so as to be capable of contacting the retraction side of the pin member in the length direction of the cam member, and the cam contact portion is provided on the pin member. 6. The heat insulating panel according to claim 5, further comprising: urging means which can be urged toward. 8. A turning operation unit which is capable of turning the turning operation unit and which is separate from the turning operation unit, can be inserted thereinto, and rotates the turning operation unit. Square holes that can be transmitted to
The heat insulation panel according to any one of claims 1 to 7, wherein the heat insulation panel is provided in the rotation operation unit. 9. The heat insulation according to claim 8, wherein the rotating operation portion is disposed inside the panel main body, and an operation hole through which the evacuation operation tool can be inserted is provided in the metal plate on the outer wall. panel. 10. The heat insulating panel according to claim 1, wherein a lead plate for radiation shielding is provided inside the panel body. 11. The heat insulation according to claim 1, wherein an inner peripheral surface of the panel main body on a side arranged close to the device to be heated is formed of a lead plate for shielding radiation. panel.