JP2017014840A - Fireproof covering structure and fireproof covering method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easy-to-attach/detach fireproof covering structure capable of improving the fireproofing performance of a facility afterward by attaching the fireproof covering structure, and to provide a fireproof covering method.SOLUTION: A fireproof covering structure 10 (10A-10D) at least one a fireproofing wall 11 with lid, which includes: a body part 11b which is detachable from a base material 3 previously installed, has plural detachable fireproofing walls 11-13 enclosing the periphery of a facility 2 in a non-contact manner and formed with an opening 11a; a lid part 11c covering the opening 11a; and a fixture 11d which detachably attaches the lid part 11c to the body part 11b.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a fireproof coating structure and a fireproof coating method.

  Conventionally, in order to improve the fire resistance of existing equipment installed outside the fire resistant area, it is necessary to additionally install a covering structure having fire resistance performance (hereinafter referred to as “fireproof covering structure”) in the existing equipment. There is. As an example of such a fire-resistant covering structure, there is a fire-resistant covering structure made of a fire-resistant heat insulating material that is wound around a facility for which fire resistance performance is to be improved (Patent Document 1). As another example, there is a fire-resistant and heat-insulating covering structure in which a fire-resistant covering mat is lined in advance on a metal exterior material and the emergency shut-off device is covered by assembling it in a box shape (Patent Document 2).

JP-A-7-135716 JP-A-8-207183

  However, even if the fireproof covering structure by winding the fireproof heat insulating material can improve the fireproof performance of the equipment, it is not easy to periodically remove the fireproof covering structure covering the equipment. In addition, the fire-resistant covering structure lined with the fire-resistant covering mat is likely to allow heat to enter from a plurality of joints generated during assembly, and when there is a penetration portion, the internal instrumentation is kept for a certain period of time (for example, For about 3 hours), and could not be protected while maintaining the function of the instrumentation.

  The embodiment of the present invention has been made in view of the above-described circumstances, and it is easy to attach and remove the covering structure covering the equipment, and the fire resistance performance of the equipment is improved afterwards by attaching the covering structure. An object of the present invention is to provide a fireproof coating structure and a fireproof coating method for protecting internal instrumentation in a state of maintaining its function for a certain period of time even in the event of a fire.

  In order to solve the above-described problem, the fireproof covering structure according to the present embodiment includes a plurality of fireproof walls that are detachable from a foundation portion that is attached in advance and surrounds the periphery of the equipment in a non-contact manner. At least one includes a main body provided with an opening, a lid that closes the opening, and a fixture that detachably attaches the main body and the lid. To do.

  In order to solve the above-described problem, the fireproof coating method according to the present embodiment includes a plurality of fireproof walls that are detachable from a foundation portion that is attached in advance and surrounds the periphery of the equipment in a non-contact manner, and at least the fireproof walls are provided. One of the above-mentioned facilities using a fireproof covering structure comprising a main body provided with an opening, a lid that closes the opening, and a fixture that detachably attaches the main body and the lid. The fireproof coating method includes: a plurality of fireproof walls including at least one first fireproof wall including the main body, the lid, and the fixture. A step of connecting the first refractory wall so that the outside of the first refractory wall with respect to the facility is open, and a plurality of the refractory walls including at least one connected first refractory wall. Before the fire wall, A plurality of connected refractory walls including at least one of the first refractory walls disposed at a position where the outside of the first refractory wall with respect to the facility is opened; And a step of attaching to the unit.

  According to the present embodiment, it is easy to attach and remove the covering structure, and the fire resistance performance of the facility can be improved afterwards by attaching the covering structure.

It is the schematic of the fireproof covering structure which concerns on this embodiment, (A) is a perspective view, (B) is the front view of the state which has removed the cover part, (C) is a left view. Sectional drawing which shows schematically the cross-section of the fireproof wall with a lid | cover of the fireproof covering structure which concerns on this embodiment. Sectional drawing which shows schematically the cross-sectional structure of the perforated fire wall of the fireproof covering structure which concerns on this embodiment. Sectional drawing which shows schematically the cross-sectional structure of the through-hole coating | coated wall of the fireproof coating structure which concerns on this embodiment. It is the schematic of the fireproof covering structure which concerns on 1st Embodiment, (A) is explanatory drawing which shows the installation surface and installation state which install a bottom face and a right side surface, (B) is shown by FIG. 5 (A). VB-VB sectional view taken on the line. It is the schematic of the fireproof covering structure which concerns on 2nd Embodiment, (A) is explanatory drawing which shows the installation surface and installation state which install a bottom face and a right side surface, (B) is shown by FIG. 6 (A). VIB-VIB sectional view taken on the line. Sectional drawing which shows roughly the joint part of the two fireproof walls which comprise the different surface of the fireproof coating structure which concerns on 3rd Embodiment. Sectional drawing which shows schematically the cross-sectional structure of the fireproof wall which comprises the fireproof coating structure which concerns on 4th Embodiment. Sectional drawing which shows schematically the cross-section of the heat absorption part of the fireproof wall which comprises the fireproof coating structure which concerns on 4th Embodiment. Explanatory drawing (graph) which shows the heating conditions in the test done according to the standard fire temperature curve of ISO834. Explanatory drawing (graph) which shows transition of the atmospheric temperature inside the said fireproof coating structure when the fireproof coating structure which concerns on 4th Embodiment is heated according to the standard fire temperature of ISO834.

  Hereinafter, a fireproof covering structure and a fireproof covering method according to embodiments of the present invention will be described with reference to the drawings. In the following description, words indicating directions such as up, down, left, and right are based on the illustrated state or the normal use state. As for inside and outside, unless otherwise specified, the facility whose surroundings are covered is used as a reference, and the side closer to the facility is the inside and the far side is the outside.

  The fireproof covering structure according to the embodiment of the present invention is a structure that covers the periphery of the equipment with a fireproof wall that is easy to attach and remove when it is desired to improve the fireproof performance of the equipment. Examples of the equipment whose surroundings are covered include, for example, measuring instruments, transmitters of the measuring instruments, instrumentation configured with ancillary instruments related to the measuring instruments such as amplifiers, or control panels for controlling these instruments. It can be applied to various facilities that want to improve fire resistance.

  FIG. 1 is a schematic view of a fire-resistant covering structure 10 (10A to 10D) which is an example of a fire-resistant covering structure according to an embodiment of the present invention. FIG. FIG. 1B is a front view of the fireproof covering structure 10 with the lid 11c removed, and FIG. 1C is a left side view of the fireproof covering structure 10. FIG. FIG.

  In the xyz orthogonal coordinate system shown in FIG. 1A, the x-axis indicates the horizontal (width) direction, the y-axis indicates the vertical (depth) direction, and the z-axis indicates the height direction. Accordingly, in FIG. 1A, the xy plane is the floor surface 2, and the xz plane is the mounting surface (the fireproof covering structure 10) to which the base material 3 as the foundation for mounting the fireproof covering structure 10 is attached. 4).

  Moreover, in FIG. 1 (FIG. 1 (A)-FIG.1 (C)), the base material 3 is fixed to the attachment surface 4 from the viewpoint of a figure clarity and simplification, or the fire walls 11-13 are fixed. For example, a fixture such as a screw or a bolt used for fixing the fire wall 12 and the through-hole covering wall 16 is not shown.

  In the fireproof covering structure 10 illustrated in FIG. 1, the equipment 1 surrounded by a predetermined space (in non-contact with the fireproof walls 11 to 13) is, for example, an instrument with pipes 1 a and 1 b disposed therein. It is an example installed on the pedestal 5 supported by the mounting surface 4. In the fireproof covering structure 10 illustrated in FIG. 1, the mounting surface 4 is an installation face of the fireproof covering structure 10 (fireproof walls 11 to 13).

  The fireproof covering structure 10 includes, for example, a plurality of fireproof walls 11 to 13 that are detachable from the base material 3 that is attached in advance to the attachment surface 4 and surround the facility 1 in a non-contact manner. The fire walls 11 to 13 can be detachably attached to the base material 3 via attachments 14 such as latches and patch locks, for example.

  The fire wall 11 (hereinafter referred to as a “fire wall 11 with a lid”) includes, for example, a main body portion 11b provided with an opening portion 11a accessible to the enclosed facility 1, and a lid portion 11c that closes the opening portion 11a. And a fixture 11d for detachably attaching the main body 11b and the lid 11c.

  The fire wall 12 (hereinafter referred to as “perforated fire wall 12”) is a pipe so that the fire performance can be improved with respect to the equipment 1 in which pipe bodies such as the pipes 1a and 1b are disposed. A through hole through which the body passes is provided.

  The fire wall 13 (hereinafter referred to as “non-hole fire wall 13”) is a fire wall in which a through hole is not provided with respect to the perforated fire wall 12, that is, a fire wall constituting a general part.

  Further, when the perforated fireproof wall 12 is applied to the fireproof covering structure 10, the outermost end of the through hole is surrounded and concealed with respect to the thickness direction of the perforated fireproof wall 12. Moreover, the through-hole covering wall 16 which is an example of a fireproof wall can be installed.

  The through-hole covering wall 16 includes, for example, a plurality of covering wall blocks 16a and 16b that can be connected to each other, and a fixture 16c that connects and separates the covering wall block 16a and the covering wall block 16b. A fire wall that can be connected and disassembled. Here, the fixture 16 c is a component having the same function as the fixture 14.

  In the fire-resistant covering structure 10, for example, by installing the through-hole covering wall 16 with respect to the perforated fire-resistant wall 12, it is possible to suppress a decrease in heat resistance performance smaller than when the through-hole covering wall 16 is not installed. Can do.

  The through-hole covering wall 16 is not limited to the case where it is installed on the outer surface of the perforated fire-resistant wall 12, and can also be applied as a fire-resistant wall constituting the outer wall of the fire-resistant covering structure 10 as with the fire resistant walls 11 to 13. . The through-hole covering wall 16 is useful when, for example, installing a fireproof wall avoiding an obstacle on the floor surface 2 located in the vicinity of the facility 1 where it is desired to improve the fireproof performance.

  Then, the structure of the fireproof walls 11-13 and the through-hole coating wall 16 which comprise the fireproof coating structure 10 is demonstrated.

  2 is a cross-sectional view schematically showing a cross-sectional structure of the fire wall 11 with a lid, FIG. 3 is a cross-sectional view schematically showing a cross-sectional structure of the perforated fire wall 12, and FIG. 4 is a cross-sectional structure of the through-hole covering wall 16. It is sectional drawing shown roughly.

  The main body portion 11b and the lid portion 11c (FIG. 2) of the fire wall 11 with a lid are, for example, a laminate including a plurality of layers having different properties, and at least a heat resistance that constitutes a heat resistant layer that can withstand heat from the outside. Part 21, heat insulating part 22 that constitutes a heat insulating layer that cuts off heat transmitted from the outside, and heat absorbing part 23 that constitutes an endothermic layer that absorbs transmitted heat, and includes heat resistant part 21, heat insulating part 22, and heat absorbing part 23. It is configured by stacking (stacking) in order from the outside to the inside of the facility 1.

  The heat-resistant portion 21 is made of a material such as a heat-resistant metal having high heat resistance and high strength such as stainless steel and titanium.

  The heat insulation part 22 is comprised by the heat insulating material suitably selected from the various heat insulating materials which have the heat insulation function which interrupts the heat | fever transmitted from the outside. As the heat insulating material constituting the heat insulating portion 22, for example, an inorganic molded plate such as a calcium silicate heat insulating material or an inorganic fiber material such as a ceramic fiber blanket can be applied.

  The heat absorption part 23 is comprised by the heat absorption material suitably selected from the various heat absorption materials which have the thermal absorption function which absorbs the heat transmitted from the outside. The heat absorbing material constituting the heat absorbing portion 23 is, for example, a liquid or gel-like heat absorbing function such as water or a polymer impregnated with water in a cell that is two-dimensionally partitioned between two waterproof films. An endothermic pack formed by filling a substance having the above is preferable. Further, as the heat absorbing portion 23, a structure in which an inorganic fiber heat insulating material such as a ceramic fiber blanket is laminated on the surface facing the outer side of the heat absorbing pack, and the outer side is wrapped with a skin material such as a glass cloth with metal foil, and the like. More preferably.

  In addition, plate-shaped shaping members 24 are attached to both end surfaces of the main body portion 11b and the lid portion 11c in the width direction and the depth direction in order to adjust the shape and maintain stability. In the main body 11b, the shaping member 24 is also attached to the edge of the opening 11a. The main body part 11b and the lid part 11c can block the opening part 11a by fitting the convex protrusion (tab) 24a of the lid part 11c into the concave receiving part 24b of the main body part 11b. Further, it is also effective to adopt a configuration in which the joint portion formed by fitting the protruding portion 24a and the receiving portion 24b is covered with a heat insulating material from the outside to suppress heat from entering the gap between the joint portions.

  The cross-sectional structure of the perforated fire wall 12 (FIG. 3) is basically the same as that of the main body portion 11b and the lid portion 11c, and from the outside toward the inside, the heat resistant portion 21, the heat insulating portion 22, and the heat absorbing portion 23. It is configured by stacking (stacking). Here, the through hole 12a (FIG. 3) is a hole through which a pipe body such as the pipes 1a and 1b passes.

  Since the non-porous fire wall 13 (FIG. 1C) is configured such that the through-hole 12a is not provided with respect to the perforated fire wall 12, the basic structure is the same as that of the perforated fire wall 12. is there. That is, the cross-sectional structure of the non-porous refractory wall 13 is a configuration in which the through-hole 12a and the shaping member 24 attached to the edge of the through-hole 12a are omitted from the perforated refractory wall 12.

  The cross-sectional structure of the through-hole covering wall 16 (FIG. 4) is the same as the cross-sectional structure of the main body portion 11b, the lid portion 11c, the perforated fire wall 12 and the non-hole fire wall 13 and the like. That is, the covering wall blocks 16a and 16b are configured by stacking (stacking) the heat-resistant part 21, the heat-insulating part 22, and the heat-absorbing part 23 from the outside toward the inside. Here, the through-hole 17 (FIG. 4) is a hole through which pipe bodies such as the pipes 1a and 1b pass.

  Moreover, in the through-hole covering wall 16 in which the covering wall block 16a and the covering wall block 16b are connected as illustrated in FIG. 4, a protruding portion (tab) 24a is provided on at least a part of the shaping member 24 located at the end. It is configured to be easily fixed to the surface of the perforated fireproof wall 12 via a fixture.

  In the fireproof covering structure 10 having the fireproof wall 11 with the lid configured as described above, it is necessary because it can be attached (coupled) and detached (separated) from the main body 11b provided with the lid 11c. Sometimes, the installation 1 surrounded by the fireproof covering structure 10 is accessed from the opening 11a by removing the lid 11c from the main body 11b without attaching and removing the fireproof walls 11 to 13 from the base material 3. be able to.

  Further, in the fireproof covering structure 10, the heat transmitted from the outside of the fireproof covering structure 10 is directly applied in a predetermined space around the equipment 1 for which the fireproof performance is to be improved, that is, surrounding the equipment 1 in a non-contact manner. Since it is not conducted to the facility 1 and the atmosphere temperature in the internal space of the fireproof covering structure 10 is kept low and the amount of heat transmitted to the facility 1 is reduced, the influence of heat on the facility 1 can be reduced.

  Furthermore, since the fireproof covering structure 10 surrounds the facility 1 in a non-contact manner, the fireproof performance can be improved without applying a load to the facility 1.

  Although the fireproof covering structure according to the present embodiment employs the above-described structure as a basic structure, for example, the structure of the contact surface with another structure such as the installation surface 4, the fireproof walls 11 to 11. In the configuration of the mating portion 13 and the configuration of the heat absorbing portion located on the innermost side of the refractory walls 11 to 13, there are several forms. Each embodiment will be described below.

[First embodiment]
FIG. 5 is a schematic view of a fire-resistant covering structure 10A that is an example of the fire-resistant covering structure according to the first embodiment, and FIG. 5 (A) is a bottom surface (non-porous fire wall 13) of the fire-resistant covering structure 10A. FIG. 5B is an explanatory diagram showing the installation surface 4 on which the right side surface (the perforated fire wall 12) is installed and the installation state, and FIG. -VB sectional view).

  The fireproof covering structure 10A is formed, for example, as a rectangular parallelepiped having an opening on the back surface (installation surface 4) side, and a plurality of flat firewalls 11-13 such as five are connected by a fixture 18 to the firewalls 11-13. Is attached to the installation surface 4 to surround the facility 1 (FIG. 1) in a non-contact manner.

  The connected fire walls 11 to 13 can be fixed to the installation surface 4 with high adhesion by the fixtures 14 attached to at least one of the fire walls 11 to 13 and the base material 3 attached to the installation surface 4 in advance. it can.

  A fireproof covering structure 10A illustrated in FIG. 5A is an example in which the fixture 14 is a snap lock. In the fireproof covering structure 10A illustrated in FIG. 5A, for example, a receiving portion of a snap lock having a hook 14a is attached to the base material 3, an arm 14b that engages with the hook 14a, and a lever that is moved when the snap lock is opened and closed. 14c is attached to the perforated fire wall 12.

  When fixing (attaching) the fireproof covering structure 10A to the installation surface 4, the arm 14b is hooked on the hook 14a and the lever 14c is pushed down as a snap lock as the fixture 14. On the other hand, when releasing (removing) the fireproof covering structure 10A from the installation surface 4, the lever 14c is pulled up and the arm 14b hooked on the hook 14a is removed from the hook 14a.

  Next, a fireproof coating method using the fireproof coating structure 10A (hereinafter referred to as “first fireproof coating method”) will be described.

  The first fire-resistant coating method attaches the fire-resistant covering structure 10A to the installation surface 4 so that the fire-resistant walls 11 to 13 surround the facility 1 (FIG. 1) in a non-contact manner, thereby improving the fire-resistant performance of the facility 1. This is a coating method for the facility 1.

  In the first fireproof coating method, first, the type of the equipment 1 (FIG. 1) to be fireproof coated, the position where the support member supporting the equipment 1 such as the pedestal 5 (FIG. 1) is attached, the position of the fire wall 11 with the lid, etc. In consideration of the above, the plurality of fire walls 11 to 13 are connected by the fixture 18. When connecting the plurality of fire walls 11 to 13, the position of the fire wall 11 with the lid is determined so that the outside of the fire wall 11 with the lid is opened. This is because after the fireproof covering structure 10A is installed, the opening 11a serving as an access port to the facility 1 is located at a position accessible to humans.

  For example, when the equipment 1 in which the pipes 1a and 1b illustrated in FIG. 1 are disposed is fire-resistant coated, one fire-resistant wall 11 with a lid located on the front side and two pieces of present located on the upper and right sides are provided. A hole refractory wall 12 and two non-hole refractory walls 13 positioned on the bottom and left side surfaces are arranged so as to surround the periphery of the facility 1 in a non-contact manner.

  In arranging the fire walls 11 to 13, the fixture 14 is attached to at least one of the fire walls 11 to 13 and the base material 3 attached in advance to the installation surface 4 in consideration of the position to be the installation surface 4.

  Subsequently, the fire walls 11 to 13 connected by the fixture 18 are installed on the installation surface 4 and fixed (attached) by the fixture 14. Further, in order to reduce heat intrusion from the through-hole 12a (FIG. 3) through which the pipes 1a and 1b of the perforated fire wall 12 penetrate, the outer surface of the perforated fire-proof wall 12 is covered with the through-holes while avoiding the pipes 1a and 1b. The wall 16 (covered wall blocks 16a and 16b) is attached. Furthermore, if necessary, a heat shield material is attached to the gap between the through-hole covering wall 16 and the pipes 1a and 1b to more reliably close the gap.

  When the installation of the refractory walls 11 to 13 connected by the fixture 18 on the installation surface 4 is completed, the refractory coating of the equipment 1 by the refractory coating structure 10A is completed. After the fireproof coating of the facility 1 is completed, when the necessity to access the facility 1 occurs, the opening portion 11a can be opened by removing the lid portion 11c of the fireproof wall 11 with the lid from the main body portion 11b. Access to the facility 1 is possible from the opening 11a.

  According to the fireproof covering structure 10A and the first fireproof covering method, the fireproof performance of the equipment 1 can be improved afterwards by covering the periphery of the equipment 1 with the fireproof covering structure 10A. Moreover, since the attachment and removal of the fireproof walls 11 to 13 constituting the fireproof coating structure 10A are easy, the attachment and removal of the fireproof coating structure 10A can be facilitated. Furthermore, even when the through hole is provided in the main body (fire wall) of the fireproof covering structure 10A, it is considered that the predetermined fire resistance can be maintained, and the facility 1 is provided with a pipe body such as a pipe. Applicable to instrumentation.

  According to the fireproof covering structure 10A and the first fireproof covering method, since the fireproof covering structure 10A includes the fireproof wall 11 with a lid, it can be attached (coupled) and removed (separated) from the main body 11b. When necessary, the lid 11c can be removed (separated) without removing the fire walls 11 to 13 from the base material 3, and the facility 1 surrounded by the fire resistant covering structure 10A is accessed from the opening 11a. can do.

  Therefore, even if the facility 1 is a plant instrument, regular inspection can be performed without affecting the existing instrument. In addition, even if the necessity of replacement occurs due to wear, wear or the like as a result of inspection, it can be easily replaced, so that fireproof protection of the instrumentation during the plant operation period is possible.

  In addition, according to the fireproof covering structure 10A and the first fireproof covering method, the surroundings of the equipment 1 for which the fireproof performance is desired to be improved have a predetermined space, that is, the surroundings of the equipment 1 are surrounded in a non-contact manner. The heat transmitted from the outside of the body 10A is not directly conducted to the equipment 1, and the atmosphere temperature in the internal space of the fireproof covering structure 10A is kept low, and the amount of heat transmitted to the equipment 1 is reduced. Can be reduced.

  Furthermore, according to the fireproof covering structure 10A and the first fireproof covering method, the periphery of the facility 1 is surrounded in a non-contact manner, so that the fireproof performance can be improved without applying a load to the facility 1.

  The fire walls 11 to 13 and the through-hole covering wall 16 described above are arranged such that the heat-resistant part 21, the heat-insulating part 22 and the heat-absorbing part 23 are directed from the inside to the outside in the order of the heat-absorbing part 23, the heat-insulating part 22 and the heat-resistant part 21. However, the examples are not limited to the above-described examples. The refractory walls 11 to 13 and the through-hole covering wall 16 may further include at least one of a heat resistant part, a heat insulating part, and a heat absorbing part, in addition to the heat resistant part 21, the heat insulating part 22, and the heat absorbing part 23. Moreover, the heat-resistant part 21, the heat insulation part 22, and the heat absorption part 23 may be multilayered not only in a single layer.

[Second Embodiment]
The fireproof covering structure according to the second embodiment is, for example, a fireproof wall and, for example, a floor surface or a wall surface serving as an attachment surface (installation surface) with respect to the fireproof covering structure according to the first embodiment. Although it differs in that a heat insulating material is inserted between the surfaces of other structures that are in contact with the fire wall, it is not substantially different in other points. Therefore, in the description of the second embodiment, the description will focus on the attachment location to which the fireproof covering structure according to the present embodiment is attached, and the constituent elements that are not substantially different from the fireproof covering structure according to the above-described embodiment will be described. The same reference numerals are assigned and redundant description is omitted.

  FIG. 6 is a schematic view of a fire-resistant covering structure 10B that is an example of the fire-resistant covering structure according to the second embodiment, and FIG. 6 (A) is a bottom surface of the fire-resistant covering structure 10B (non-porous fire wall 13). FIG. 6B is a sectional view (VIB) taken along the line VIB-VIB (FIG. 6A) of FIG. -VIB line sectional view).

  In the fire-resistant covering structure 10B, for example, the perforated fire-resistant wall 12 and the non-porous fire-resistant wall 13 previously connected by the fixture 18 are installed (fixed) on the installation surface 4 in the same manner as the fire-resistant covering structure 10A and the like. However, in this case, heat is blocked between the installation surface 4 of the fireproof covering structure 10B, which is the surface of another structure, and the perforated fireproof wall 12 and the nonporous fireproof wall 13 of the fireproof covering structure 10B. A heat insulating material 26 is disposed. A heat insulating material 26 can also be disposed between the floor surface 2 and the perforated fire wall 12 and the non-porous fire wall 13.

  In the fireproof covering structure 10B in which the heat insulating material 26 is disposed on the contact surface with another structure, there are fine unevenness formed on the surface of the installation surface 4 and the floor surface 2, and the heat of the outside air is generated from the unevenness. Even if it has invaded, the heat which the heat insulating material 26 penetrates can be cut off, and the influence on the facility 1 surrounded by the fireproof covering structure 10B can be reduced.

  The fireproof coating method using the fireproof coating structure 10B (hereinafter referred to as “second fireproof coating method”) is after the base material 3 is attached to the first fireproof coating method. Before installing the fireproof walls 11 to 13 as the fireproof covering structure 10B, it is different in that it further includes a step of disposing the heat insulating material 26 on the contact surface with other structures such as the installation surface 4. Other points are not substantially different from the first fireproof coating method.

  According to the fireproof coating structure 10B and the second fireproof coating method, the same effects as those of the fireproof coating structure 10A and the first fireproof coating method can be obtained. Therefore, by covering the periphery of the facility 1 with the fireproof covering structure 10B, the fireproof performance of the facility 1 can be improved afterwards, and the fireproof walls 11 to 13 can be removed from the base material 3 when necessary. The facility 1 surrounded by the fireproof covering structure 10B can be accessed from the opening 11a.

  Moreover, according to the fireproof covering structure 10B and the second fireproof covering method, the heat insulating material 26 that blocks heat is used as another structure in which the fireproof covering structure 10B such as the installation surface 4 or the floor surface 2 is installed. Therefore, even if there is a fine unevenness on the contact surface with another structure, the heat insulating material 26 can prevent heat from entering from the unevenness. Therefore, the influence of the heat which the external air with respect to the fireproof covering structure 10B exerts on the equipment 1 surrounded by the fireproof walls 11 to 13 can be further reduced.

  In addition, the fireproof covering structure 10B illustrated in FIG. 6 is in contact with the contact surface of another structure on which the fireproof covering structure 10B such as the installation surface 4 and the floor surface 2 is installed with respect to the fireproof covering structure 10A. Although an example in which the heat insulating material 26 is disposed between them, the application target of the present technology is not limited to the fireproof covering structure 10A.

[Third embodiment]
The fireproof covering structure according to the third embodiment is, for example, a mating surface of two fireproof walls that form different faces of the fireproof covering structure and are combined with the fireproof covering structure according to the second embodiment. However, there is no substantial difference in other respects. Therefore, in the description of the third embodiment, the description will focus on the configuration of the mating surface of the fire wall, and the same reference numerals are given to components that are not substantially different from the fireproof covering structure according to the above-described embodiment. A duplicate description is omitted.

  FIG. 7 is a cross-sectional view schematically showing a joining portion of two fire walls that constitute different surfaces of a fireproof coating structure 10C that is an example of the fireproof coating structure according to the third embodiment.

  The fire walls 12 and 13 illustrated in FIG. 7 are fire walls that constitute the right side surface and the bottom surface of the fire resistant coating structure 10C, respectively. In the fireproof covering structure 10C, for example, the mating surface of the perforated fire wall 12 on the right side and the non-hole fire wall 13 on the bottom side has a boundary surface between the heat resistant part 21 and the heat insulating part 22 from the outside toward the inside. The step is configured in a stepped manner with the boundary surface between the heat insulating portion 22 and the heat absorbing portion 23 as the second step.

  In addition, in the fireproof covering structure 10C, for example, joints appearing on the surface when the perforated fireproof wall 12 and the nonporous fireproof wall 13 are combined are marked with a heat insulating sealing material 31 that shields heat, and the first mating surface ( A thermally expandable heat insulating material 32 is inserted between the heat-resistant part 21 and the heat-insulating part 22 and the end face of the heat-insulating part 22 combined with the first stage of the mating surface. Between the heat absorbing portion 23 and the end surface of the heat absorbing portion 23 that is combined with the second stage of the mating surface.

  The heat-expandable heat insulating material 32 is a material that expands in volume when heat is applied. For example, the heat-expandable heat-insulating material 32 is formed by mixing heat-expandable graphite with a resin or the like and molding it into a sheet shape. In the heat-resistant covering structure 10C, when heat is applied from the outside, the thermally expandable heat insulating material 32 expands in volume, closely contacts the first stage of the mating surface and the end surface of the heat insulating portion 22, closes the gap, and closes the heat intrusion route. .

  The heat insulating material 26 prevents heat entering from the outside from being directly applied to the heat absorbing material constituting the heat absorbing portion 23 in the fireproof covering structure 10C.

  In the fireproof covering structure 10C configured as described above, since the mating surfaces of the fireproof walls 11 to 13 or the through-hole covering walls 16 that can serve as a heat intrusion route from the outside to the inside are configured in a step shape, the shape is linear. Compared with the case where it is configured as above, heat can hardly enter from the outside, and the heat resistance effect can be further enhanced.

  Further, joints appearing on the surface when the perforated fire wall 12 and the non-porous fire wall 13 are combined are covered with the heat shielding seal material 31, and the first mating surface (boundary surface between the heat resistant portion 21 and the heat insulating portion 22) The thermally expandable heat insulating material 32 is inserted between the first surface of the heat insulating portion 22 and the end surface of the heat insulating portion 22 to be combined, and the second surface of the mating surface (the boundary surface between the heat insulating portion 22 and the heat absorbing portion 23) and the alignment. By inserting the heat insulating material 26 between the end face of the heat absorbing portion 23 that is combined with the second stage of the surface, heat is less likely to enter from the outside to the inside, and the heat resistance effect can be further enhanced.

  In addition, the fireproof coating method (hereinafter referred to as “third fireproof coating method”) using the fireproof coating structure 10 </ b> C combines the two fireproof walls 11 to 13 with the second fireproof coating method. In this case, for example, a thermally expandable heat insulating material 32 is inserted between the first step of the mating surface (the boundary surface between the heat-resistant portion 21 and the heat insulating portion 22) and the end surface of the heat insulating portion 22 mated with the first step of the mating surface. Inserting the heat insulating material 26 between the mating surface second step (the boundary surface between the heat insulating portion 22 and the heat absorbing portion 23) and the end surface of the heat absorbing portion 23 mating with the second mating surface; It differs in that it includes a step of stitching joints appearing on the surfaces of the two fire-resistant walls 11 to 13 with the heat-shielding sealing material 31, but the other points are not substantially different from the second fire-resistant coating method.

  According to the fireproof covering structure 10C and the third fireproof covering method, the same effects as those of the fireproof covering structures 10A and 10B and the first and second fireproof covering methods can be obtained. Therefore, by covering the periphery of the facility 1 with the fireproof covering structure 10C, the fireproof performance of the facility 1 can be improved afterwards, and the refractory walls 11 to 13 can be removed from the base material 3 when necessary. The facility 1 surrounded by the fireproof covering structure 10B can be accessed from the opening 11a.

  In addition, according to the fireproof covering structure 10C and the third fireproof covering method, (1) when connecting the fireproof walls 11 to 13, the mating surfaces where the fireproof walls 11 to 13 are combined are configured in a stepped manner ( 2) Joints appearing on the surface are covered with the heat-shielding sealing material 31, and (3) the first mating surface (boundary surface between the heat-resistant portion 21 and the heat-insulating portion 22) of the non-porous fire wall 13 (bottom surface in FIG. 7); Then, a thermally expandable heat insulating material 32 is inserted between the end face of the heat insulating portion 22 with the porous fire wall 12 (right side surface in FIG. 7) in contact with the first step of the mating surface, and (4) the non-porous fire wall 13 is aligned. Thermal insulation between the second stage of the surface (the boundary surface between the heat insulating part 22 and the heat absorbing part 23) and the end face of the heat absorbing part 23 of the perforated fire wall 12 (right side in FIG. 7) in contact with the second stage of the mating surface. Since the material 26 is inserted, outside air to the fireproof covering structure 10C is taken by the fireproof walls 11-13. The effect of heat on the equipment 1 enclosed can be further reduced.

  In addition, the fireproof covering structure 10C illustrated in FIG. 7 has (1) a mating surface where the fireproof walls 11 to 13 are joined together when the fireproof walls 11 to 13 are connected to the fireproof covering structure 10B. (2) The joints appearing on the surface are lined with the heat-shielding sealing material 31, and (3) the first mating surface (heat-resistant part 21 and heat-insulating part 22) of the non-porous fire-resistant wall 13 (bottom face in FIG. 7). ) And a perforated fire wall 12 (right side surface in FIG. 7) in contact with the first step of the mating surface, and a thermal expansion heat insulating material 32 is inserted between the end surfaces of the heat insulating portion 22 ( 4) Heat absorption of the second stage of the mating surface of the non-porous fire wall 13 (the boundary surface between the heat insulating portion 22 and the heat absorbing portion 23) and the heat resistance of the perforated fire wall 12 (right side surface in FIG. 7) in contact with the second stage of the mating surface. Although it is an example comprised by inserting the heat insulating material 26 between the end surfaces of the part 23, it is not necessarily the above 1) to (4) of applying all it is not necessary to configure the fireproofing structure 10C.

  That is, only one of the above (1) to (4) may be applied. In this case, although all of the above (1) to (4) are more susceptible to the heat transferred from the outside than when all of the above are applied, the heat transferred from the outside than when nothing is applied. The influence can be suppressed.

  Moreover, although the fireproof covering structure 10C illustrated in FIG. 7 is an example in which all of the above (1) to (4) are applied to the fireproof covering structure 10B, the application target of the present technology is fireproof. It is not limited to the covering structure 10B. The fireproof covering structure 10 having the mating portions of the fireproof walls 11 to 13 can be applied to the fireproof covering structure 10 other than the fireproof covering structure 10B such as the fireproof covering structure 10A.

  Furthermore, the above (1) to (4) may be applied not only to the mating portion of the fire walls 11 to 13 but also to the mating portion of the main body portion 11b and the lid portion 11c of the fire wall 11 with the lid.

[Fourth Embodiment]
The fireproof covering structure according to the fourth embodiment is different from the fireproof covering structure according to the third embodiment in that the heat absorption part of the fireproof wall is multilayered, for example. So there is no substantial difference. Therefore, in the description of the fourth embodiment, the heat absorption part will be mainly described, and the constituent elements that are not substantially different from the fireproof covering structure according to the above-described embodiment will be denoted by the same reference numerals and redundant description will be omitted. To do.

  FIG. 8 is a cross-sectional view showing a 13D cross-sectional structure of a non-porous fire wall that is an example of the fire wall that constitutes the fireproof covering structure 10D.

  The fireproof covering structure 10 </ b> D includes a heat-resistant wall such as a non-porous fire-resistant wall 13 </ b> D including the heat-absorbing part 40 instead of the heat-absorbing part 23, and surrounds the facility 1 (FIG. 1) by the fire-resistant wall. The non-porous fire wall 13 </ b> D is different from the non-hole fire wall 13 in that the heat-absorbing part 40 is provided instead of the heat-absorbing part 23, but the other points are not substantially different.

  In FIG. 8, as an example of the fireproof wall provided with the heat absorbing portion 40 instead of the heat absorbing portion 23, a 13D cross section of the nonporous fireproof wall provided with the heat absorbing portion 40 instead of the heat absorbing portion 23 with respect to the nonporous fireproof wall 13. Although the structure is illustrated, the present technology is not limited to the non-porous refractory wall 13 but can be applied to all refractory walls including the heat absorbing portion 23. For example, the present invention can also be applied to a fireproof wall including a heat absorbing portion 23 such as a fireproof wall 11 with a lid (FIG. 2), a perforated fireproof wall 12 (FIG. 3), and a through hole covering wall 16 (FIG. 4).

  FIG. 9 is a cross-sectional view showing a cross-sectional structure of the heat absorbing portion 40 provided in the fireproof wall of the fireproof covering structure 10D.

  The endothermic part 40 is configured by stacking (stacking) a plurality of endothermic bodies 41 in layers, for example, and a partition plate 43 that partitions the endothermic body 41 is disposed between the endothermic body 41 and the endothermic body 41. . That is, the endothermic part 40 is different from the endothermic part 23 (FIGS. 2 to 4) in the endothermic material 41a or the endothermic body 41 (the endothermic material 41a and the cylinder 41b) corresponding to the endothermic part 23 (FIGS. 2 to 4). It is different in that it is configured by stacking layers.

  The endothermic body 41 accommodates the endothermic material 41a having a function of absorbing heat in a bottomed cylindrical body 41b whose cross section parallel to the height direction has a concave shape and whose cross section parallel to the height direction has a mouth shape. Configured. The endothermic material 41a is, for example, a substance having a liquid or gel-like heat absorption function in a cell that is two-dimensionally partitioned between two waterproof films, similarly to the endothermic material constituting the endothermic portion 23. Is an endothermic material formed by filling. Moreover, the cylinder 41b is formed of a metal resistant to heat, such as stainless steel.

  The partition plate 43 is an arbitrary component in the heat absorbing unit 40. The partition plate 43 has a function of retaining the vapor G generated by vaporization of the liquid or gel-like substance in the endothermic material 41a in each endothermic body 41 and the function of delaying the heat transfer. For example, it is formed of a heat-resistant metal such as stainless steel.

  In the heat absorption part 40 configured as described above, when heat is applied from the outside, heat is applied from the heat absorption body 41 close to the heat source, and the heat absorption material 41a is gradually removed from the heat absorption body 41 close to the heat source inside the heat absorption body 41. Over time, the cells of the endothermic material 41a burst. Along with the rupture of the cell, the vapor G in which the substance filled in the cell is vaporized is released into the internal space 45 in which the endothermic material 41a is accommodated, and the volume of the endothermic material 41a is reduced.

  In the heat absorbing part 40 illustrated in FIG. 9, the opening of each heat absorbing body 41 is closed by a partition plate 43 disposed adjacent to the upper part. It stays in the internal space 45 of the heat absorber 41 and is gradually discharged from the end. Therefore, it is possible to prevent the heat quantity of the steam G generated by heating from being directly transferred to the heat absorbing material 41a of the other heat absorbing body 41.

  As described above, by arranging the partition plate 43 in the heat absorbing portion 40, heat can be further transmitted from the outside to the inside, and the increase in the atmospheric temperature of the internal space formed in the fireproof covering structure 10D. It can be suppressed later. That is, a low temperature environment can be maintained for a longer time.

  In configuring the heat absorption part 40, the arrangement of the partition plate 43 may be omitted. In the endothermic body 41 illustrated in FIG. 9, because of the cylindrical shape having the bottom, the opening is closed during stacking without the partition plate 43, and the endothermic material 41 a has liquid or heat in each endothermic body 41. Vapor G generated by vaporization of the gel-like substance can be retained in its own endothermic body 41 and gradually released from the end.

  In constituting the heat absorbing body 41, the cylinder 41b may be a frame that does not have a bottom, that is, a frame that surrounds the side periphery of the heat absorbing material 41a. For example, a plate-like body such as a metal plate having a thickness enough to stack the endothermic material 41a is provided on the endothermic material 41a. The cylinder (frame) 41b does not have a bottom and the endothermic material 41a. It can be formed by adhering to the side periphery.

  In the case where the endothermic body 40 is configured by stacking the endothermic body 41 formed by being fixed to the side periphery of the endothermic material 41a on the cylindrical body (frame body) 41b having no bottom, the partition plate 43 is provided. It is preferable to arrange.

  Further, the cylinder body 41b may be integrated with the partition plate 43. In other words, the endothermic body 41 may be configured by accommodating the endothermic material 41a in a container having the partition plate 43 as an upper lid of the cylindrical body 41b.

  8 and 9 is different from the heat-absorbing portion 40 of the fire-resistant walls 11 to 13 included in the fire-resistant covering structure 10C with respect to the fire-resistant covering structure 10C. However, the application target of the present technology is not limited to the fireproof covering structure 10C. If it is the fireproof covering structure 10 having the fireproof walls 11 to 13 having the heat absorbing portion 23, it is also applied to the fireproof covering structure 10 other than the fireproof covering structure 10C such as the fireproof covering structures 10A and 10B. it can.

Subsequently, a fire resistance test for evaluating the fire resistance performance of the fireproof covering structure 10D illustrated in FIGS. 8 and 9 and the test results thereof will be described. The main material configuration of the fireproof covering structure 10D subjected to the fireproof test is as follows.
Heat-resistant part 21: Stainless steel plate (SUS304 thickness: 1.5 mm)
Heat insulation part 22: Ceramic fiber blanket (JIS R 3311: 1)
Thickness 25mm
Endothermic part 40: A & A Materials Co., Ltd. Aqua cover
Thickness 32 mm x 1 layer (outside) + Thickness 13 mm x 4 layers Heat insulation material 26: Ceramic fiber blanket (JIS R 3311: 1)
Mounting surface and floor: thickness 6mm, joint: thickness 3mm
Thermally expandable heat insulating material 32: Furukawa Techno Material Dan Seal-D thickness 2mm

  FIG. 10 shows heating conditions C1 in a test conducted in accordance with the standard fire temperature curve of ISO834, which is one of the standards related to the fire resistance test defined by the International Organization for Standardization (ISO). It is explanatory drawing (graph) shown.

  The fire resistance test for evaluating the fire resistance performance of the fireproof covering structure 10D is performed by heating for 60 minutes to 180 minutes in accordance with the standard fire temperature curve C1 (FIG. 10) of ISO834. The internal ambient temperature was measured.

  FIG. 11 is an explanatory diagram showing the transition of the ambient temperature inside the fireproof covering structure 10D when the fireproof covering structure 10D is heated according to the standard fire temperature of ISO834 (when the fireproof test shown in FIG. 10 is performed) (graph) ).

  In the graph shown in FIG. 11, the horizontal axis indicates the heating time (minutes), and the vertical axis indicates the temperature (° C.). Moreover, line C2 shows the time transition of the ambient temperature (° C.) inside the fireproof covering structure 10D.

  As shown in FIG. 11, the atmospheric temperature (° C.) inside the fireproof covering structure 10D rises to less than 100 ° C in 60 minutes after the start of heating, but within the fireproof covering structure 10D within 60 minutes to 180 minutes. The atmospheric temperature is suppressed to about 100 ° C. Therefore, even when heating is performed for 180 minutes in accordance with the standard fire temperature of ISO834, the atmospheric temperature inside the fireproof covering structure 10D during heating is kept within a range of about 100 ° C. or less.

  Thus, even when the fireproof covering structure 10D is heated for 180 minutes in accordance with the standard fire temperature of ISO834, the atmospheric temperature inside the fireproof covering structure 10D during heating is suppressed to about 100 ° C. at the maximum. Therefore, the surface temperature of the equipment covered by the fireproof coating structure 10D can be suppressed to about 100 ° C. or less, and high fireproof performance can be imparted to the equipment to be covered.

  The fireproof coating method using the fireproof coating structure 10D (hereinafter referred to as “fourth fireproof coating method”) is a fireproof coating instead of the fireproof coating structure 10C as compared with the third fireproof coating method. Although different in that the structure 10D is used, there is no substantial difference in the installation procedure.

  As described above, according to the fireproof covering structure 10 (10A to 10D) and the first to fourth fireproof covering methods, the fireproof performance of the equipment 1 is improved afterwards by covering the periphery of the equipment 1 with the fireproof covering structure 10. Can be made. Moreover, since attachment and removal of the fireproof walls 11-13 etc. which comprise the fireproof coating structure 10 are easy, attachment and removal of the fireproof coating structure 10 can be facilitated.

  In addition, according to the fireproof covering structure 10 and the first to fourth fireproof covering methods, since the fireproof wall 11 with a lid is provided, the lid that can be attached (coupled) and removed (separated) from the main body 11b. 11 c can be removed (separated) without removing the fire walls 11 to 13 from the base material 3 when necessary. Therefore, according to the fireproof covering structure 10 and the first to fourth fireproof covering methods, it is possible to remove the lid 11c from the main body 11b without removing the fireproof walls 11 to 13 from the base material 3, thereby providing the fireproof covering structure. The facility 1 surrounded by 10 can be accessed from the opening 11a, and inspection and parts replacement can be easily handled without affecting the existing instrumentation.

  Furthermore, according to the fireproof covering structure 10 and the first to fourth fireproof covering methods, since the periphery of the equipment 1 is surrounded in a non-contact manner, the fireproof performance can be improved without applying a load to the equipment 1. The influence of heat on 1 can be further reduced.

  According to the fireproof covering structure 10B and the second fireproof covering method, for example, by disposing the heat insulating material 26 between contact surfaces of other structures such as the installation surface 4 and the floor surface 2, the heat insulating material 26 can prevent intrusion of heat from the unevenness, and can further reduce the influence of heat on the facility 1 in which the outside air with respect to the fireproof covering structure 10B is surrounded by the fireproof walls 11-13.

  According to the fireproof covering structure 10C and the third fireproof covering method, (1) when connecting the fireproof walls 11 to 13, the mating surfaces where the fireproof walls 11 to 13 are combined with each other are configured in a step shape, and (2) The joints appearing on the surface are covered with the heat-shielding sealing material 31, and (3) the first mating surface (the boundary surface between the heat-resistant portion 21 and the heat-insulating portion 22) of the non-porous refractory wall 13 (bottom surface in FIG. 7), A thermally expandable heat insulating material 32 is inserted into the mating surface with the end surface of the perforated fire wall 12 (right side surface in FIG. 7) heat insulating portion 22 in contact with the first step of the mating surface, and (4) the mating surface of the non-porous fire wall 13 Insulate the mating surface between the second stage (the boundary surface between the heat insulating part 22 and the heat absorbing part 23) and the end face of the heat absorbing part 23 of the perforated fire wall 12 (right side in FIG. 7) in contact with the second stage of the mating surface. Since the material 26 is inserted, the outside air with respect to the fireproof covering structure 10C is refractory walls 11-13. Thus the effect of heat on the equipment 1 surrounded can be further reduced.

  According to the fireproof covering structure 10D and the fourth fireproof covering method, since the heat absorbing portions 40 such as the fireproof walls 11-13 are multilayered, the outside air with respect to the fireproof covering structure 10D is surrounded by the fireproof walls 11-13. The influence of heat on the facility 1 can be further reduced.

  More specifically, even when the fireproof covering structure 10D is heated for 180 minutes in accordance with the standard fire temperature of ISO834, the atmospheric temperature inside the fireproof covering structure 10D during the heating is 100 ° C. at the maximum. Therefore, the surface temperature of the equipment 1 covered with the fireproof covering structure 10D can be suppressed to about 100 ° C. or less, and high fireproof performance can be imparted to the equipment 1 to be covered.

  Note that the present invention is not limited to the above-described embodiments as they are, and can be implemented in various forms other than the above-described examples in the implementation stage. The present invention can be variously omitted, added, replaced, and changed without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Equipment, 1a, 1b ... Piping, 2 ... Floor surface (xy plane), 3 ... Base material (base part), 4 ... Mounting surface (installation surface) (xz plane), 5 ... Pedestal, 10 (10A to 10D) ... fireproof covering structure, 11 ... fire wall with lid, 11a ... opening, 11b ... body part, 11c ... lid part, 11d ... fixture, 12 ... perforated fire wall, 12a ... through hole, 13, 13D: Non-hole fire-resistant wall, 14: Fixture, 14a ... Locking hook, 14b ... Locking arm, 14c ... Opening / closing lever, 16 ... Through-hole covering wall, 16a ... Covering wall block, 16b ... Covering wall block, 16c ... Mounting tool, 17 ... Through hole, 18 ... Fixing tool, 21 ... Heat resistant part, 22 ... Heat insulating part, 23 ... Heat absorbing part, 24 ... Shaping member, 24a ... Projecting part (tab), 24b ... Receiving part, 26 ... Insulating material (second insulating part), 31 ... heat shield sealing material, 32 ... thermal expansion insulating material, 40 ... absorption , 41 ... endothermic body, 41a ... endothermic material, 41b ... cylindrical body, 43 ... partition plate, 45 ... internal space, G ... steam vaporized by the endothermic material 41a, C1 ... performed in accordance with the standard fire temperature curve of ISO834 Heating conditions in the test, C2 ... time transition line of the atmospheric temperature (° C.) inside the fireproof covering structure 10D.

Claims (12)

It is equipped with a plurality of fire walls that are detachable from the foundation part that is attached in advance, and surround the facility in a non-contact manner,
At least one of the fire walls includes a main body provided with an opening, a lid that closes the opening, and a fixture that detachably attaches the main body and the lid. A fireproof covering structure characterized by that. At least one of the fire walls is a perforated fire wall provided with a through hole through which a tubular body passes,
Further comprising a through-hole covering wall that sandwiches at least a part of the tubular body while being in contact with the outermost surface of the perforated fire-resistant wall with respect to the facility,
The fire-resistant covering structure according to claim 1, wherein the through-hole covering wall includes a plurality of covering wall blocks connectable to each other. The fire wall is a laminate including a plurality of layers having different properties, at least,
An endothermic part that constitutes an endothermic layer that absorbs the transmitted heat;
A heat insulating part constituting a heat insulating layer that cuts off the heat transmitted;
With a heat-resistant part that constitutes a heat-resistant layer that withstands heat,
The fireproof covering structure according to claim 1, wherein the heat absorbing portion, the heat insulating portion, and the heat resistant portion are stacked in this order from the inside to the outside of the facility. The fire-resistant coating according to claim 3, wherein the heat-absorbing portion is formed by stacking a plurality of heat-absorbing bodies configured to accommodate heat-absorbing materials that absorb heat transmitted to the inside of the cylindrical body. Structure. The heat-absorbing part is configured by stacking a plurality of framed heat-absorbing materials in a layered manner by arranging heat-absorbing materials that absorb heat inside the frame surrounding the side periphery. The fireproof covering structure according to claim 3. The heat-absorbing part is stacked between two adjacent heat-absorbing materials with a frame, and one end and the other in the stacking direction of the frame-shaped heat-absorbing material stack composed of the heat-absorbing materials with a frame stacked in layers. The fireproof covering structure according to claim 5, further comprising a partition plate inserted into at least one of the ends. The joint formed by combining two refractory walls constituting different surfaces among the plurality of refractory walls is configured by being lined with a heat shielding seal material that shields heat. The fireproof covering structure according to any one of 1 to 6. The first fire wall and the second fire wall that constitute different surfaces among the plurality of fire walls are configured in a stepped manner. The fireproof covering structure according to the item. Among the plurality of fire walls, the first fire wall and the second fire wall, which constitute different surfaces, form a boundary between the heat resistant part and the heat insulating part from the outside to the inside of the facility. It is configured in a staircase shape with the surface as the first step and the boundary surface between the heat insulating portion and the heat absorbing portion as the second step,
When heat is applied to the mating surface between the first mating surface of the first fire wall and the end surface of the heat insulating portion of the second fire wall in contact with the first mating surface of the first fire wall The fireproof covering structure according to any one of claims 1 to 8, wherein a thermally expansible heat insulating material is inserted. Among the plurality of fire walls, the first fire wall and the second fire wall, which constitute different surfaces, form a boundary between the heat resistant part and the heat insulating part from the outside to the inside of the facility. It is configured in a staircase shape with the surface as the first step and the boundary surface between the heat insulating portion and the heat absorbing portion as the second step,
A heat insulating material is inserted into the mating surface between the second step of the mating surface of the first fireproof wall and the end surface of the heat absorbing portion of the second fireproof wall in contact with the second step of the mating surface of the first fireproof wall. The fireproof covering structure according to any one of claims 1 to 9, wherein the fireproof covering structure is provided. The fireproof covering structure according to any one of claims 1 to 10, further comprising a second heat insulating portion between the fireproof wall in contact with another structure. A plurality of refractory walls that detachably attach to a foundation portion that is attached in advance and surrounds the periphery of the equipment in a non-contact manner, and at least one of the refractory walls closes the main body portion provided with an opening and the opening. A fireproof coating method for fireproof coating the equipment using a fireproof coating structure comprising a lid, and a fixture for detachably attaching the main body and the lid,
In the fireproof coating method, the plurality of fireproof walls including at least one first fireproof wall including the main body portion, the lid portion, and the fixture are surrounded in a non-contact manner around the facility. Connecting the fire wall of 1 to the position where the outside of the facility is opened;
Disposing a plurality of fire walls including at least one connected first fire wall at the position where the outside of the first fire wall from the facility is opened;
Attaching a plurality of connected refractory walls including at least one of the first refractory walls to the foundation portion.

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