JP6895805B2 - Fireproof structure of compartment penetration - Google Patents

Description

The present invention relates to a fireproof structure of a compartment penetrating portion having a penetrating member formed in a partition portion of a building such as a power generation / transformation facility or a building / factory.

Of the section penetrations of buildings, the penetrations between sections that are important for safety are required to have a structure that prevents the spread of fire to other sections in the event of a fire in one of the sections. ..
Penetrating members of the section penetrating portion include cables, pipes, electric wires, and the like, including a bus duct which is a long structure in which a strip-shaped conductor is surrounded by a metal housing.

The bus duct of the compartment penetration part, which is important for safety, penetrates the opening provided in the refractory wall, and has a structure in which the gap between the refractory wall and the bus duct is filled with mortar or the like. When a fire breaks out in one section, the flame spreads through the section through the inside of the bus duct, and the flame deforms through the section due to thermal deformation of the bus duct, and the flame passes through the gap created between the section and the fireproof wall. It may penetrate.

Japanese Patent No. 3824358 (see FIG. 3) Japanese Unexamined Patent Publication No. 2016-10184 (see FIGS. 1, 3, and 13)

In Patent Document 1, as shown in FIG. 3, a heat-expandable member is installed on the outer peripheral surface of a bus duct penetrating a section of a building, and a rubber component that blocks high-temperature gas is further provided on the surface of the heat-expandable member. By adhering the seal layer containing the above, the heat expansion member can follow and fill the gap created between the refractory wall and the bus duct due to the thermal deformation of the outer circumference of the bus duct, and it is possible to prevent heat transfer between the compartments. A fire spread prevention device has been proposed.
However, due to the establishment of new regulatory standards for nuclear power, fire resistance for 3 hours, which exceeds the conventional fire resistance for 2 hours, is required, and the temperature reached by the bus duct may rise, resulting in an increase in the amount of thermal deformation. In this case, it is difficult to follow with only the heat-expandable member.

In Patent Document 2, as shown in FIGS. 1 and 3, a reinforcing metal fitting is attached to the outer peripheral surface of a rectangular bus duct penetrating a fireproof wall to increase rigidity, and a heat-expandable member is installed inside the reinforcing metal fitting. Therefore, a fire spread prevention device that fills the gap between the bath duct and the mortar caused by thermal deformation has been proposed.
However, in order to increase the rigidity of the reinforcing metal fittings to be attached to the outer peripheral surface of the bus duct, it is necessary to manufacture the reinforcing metal fittings with a plate thickness and an outer shape of a certain value or more, and it becomes impossible to attach the reinforcing metal fittings when the pipes or the like are close to each other around the bus duct.

Further, in Patent Document 2, as shown in FIG. 13, a refractory sheet, a refractory sheet fixing bracket, and a binding band are attached to the outer peripheral surface of the bus duct penetrating the refractory wall, and the refractory sheet is thermally expandable. A structure has been proposed to prevent the spread of fire by covering the bus duct with a fireproof sheet after filling the gap created by thermal deformation by installing members, but the work of attaching the fireproof sheet to the entire circumference of the bus duct. The workability is poor, and the fireproof sheet may cover the ventilation holes and inspection port of the bus duct, and there is a risk of deterioration of ventilation performance and maintainability.

The fireproof structure of the partition penetrating portion according to the present invention penetrates the opening formed in the partition wall of the building and has a communication region internally extending from one side to the other side of the partition wall corresponding to the inner surface of the opening. The tubular penetrating member includes an internal extending member that extends through the communication region along the axis of the tubular penetrating member inside the tubular penetrating member, and an outer peripheral surface of the internal extending member in the communicating region. wherein and the partition you blocking the communication to the other side from one side of Fu塞and the partition wall between the inner peripheral surface of the tubular penetrating member, the outer peripheral surface of the tubular penetrating member of the communication area and It is characterized by including a mortar layer mounted between the inner surface of the opening of the partition wall and a reinforcing tool provided on the inner peripheral surface of the tubular penetrating member in the communication region. ..

According to the present invention, since the communication area inside the tubular penetrating member that penetrates the partition wall of the building and is provided with the internal extension member is closed, the tubular shape from the fire occurrence section side to the non-fire occurrence section side. The transfer of flames and heat inside the penetrating member is restricted and the temperature rise is reduced. As a result, the amount of thermal deformation of the tubular penetrating member on the non-fire generation section side can be suppressed.

It is sectional drawing which shows the structure which concerns on the fire-resistant structure of the section penetration part in Embodiment 1 by this invention. It is sectional drawing which shows the structure which concerns on the fire-resistant structure of the section penetration part in Embodiment 2 by this invention. It is sectional drawing which shows the structure which concerns on the fire-resistant structure of the section penetration part in Embodiment 3 by this invention, FIG. 3A is a side sectional view which shows the structure of a penetration part, and FIG. 3B is a heat-expandable member. It is an enlarged view which shows the attachment part of 23. It is sectional drawing which shows the structure which concerns on the fireproof structure of the section penetration part in Embodiment 4 by this invention, FIG. 4A is a side sectional view which shows the structure of a penetration part, and FIG. 4B is a fireproof sheet 17. It is an enlarged view which shows the attachment part of. It is sectional drawing which shows the structure which concerns on the fire-resistant structure of the section penetration part in Embodiment 5 by this invention, FIG. 5A is a side sectional view which shows the structure of the penetration part, and FIG. It is an enlarged view which shows the attachment part of 23. FIG. 6A is a cross-sectional view showing a configuration related to a fireproof structure of a compartment penetrating portion according to a sixth embodiment according to the present invention, FIG. 6A is a side cross-sectional view showing the structure of the penetrating portion, and FIG. It is a figure which shows the attachment part of 23 in an enlarged view. FIG. 7 (a) is a side sectional view showing the structure of the penetration portion, and FIG. 7 (b) is the inspection port 22 of the inspection port 22. It is sectional drawing which shows the structure schematicly.

Embodiment 1.
Hereinafter, the fireproof structure of the compartment penetrating portion according to the first embodiment according to the present invention will be described with reference to FIG. FIG. 1 is a cross-sectional view showing the configuration of a section penetrating portion.
FIG. 1 shows a square tubular bus duct that penetrates the opening NP of a refractory wall (partition wall) 14 arranged between sections of a building such as a power generation / transformation facility or a building / factory to form a section penetration section SP. A tubular penetrating member made of 11 is shown. In the bus duct 11, a bus bar 12 as an internal extension member is arranged along the axis of the bus duct 11. The outer peripheral surface of the bus duct 11 is joined to the mortar layer 16 forming the inner peripheral surface of the opening NP, and the inside of the bus duct 11 is changed from one side surface 14A of the fireproof wall 14 having the fireproof thickness dimension ST to the other side surface 14B. A communication region SR is formed within the range where the mortar layer 16 forming the inner peripheral surface of the opening NP and the bus duct 11 are in contact with each other, and the internal extension member composed of the bus bar 12 extends through the communication region SR. To do. The bus bar 12 is composed of a copper strip-shaped conductor, and the bus duct 11 is configured as a long structure in which the bus bar 12 made of the strip-shaped conductor is surrounded by a conductive outer member made of a metal housing held at a ground potential. .. The bus bar 12 is electrically insulated from the conductive outer cover member of the bus duct 11 and is mechanically supported at the axial portion of the bus duct 11.
Then, within the area of the communication region SR and within the range where the mortar layer 16 formed in the opening NP of the refractory wall 14 and the bus duct 11 are in contact with each other, a square composed of a resin laminated molded product made of a flame-retardant material or a non-combustible material. A partition 20 forming a shape panel member is attached, and the partition 20 is fixed by a four-sided frame-shaped partition fixing bracket 21. The sealing member FS composed of the partition 20 and the partition fixing bracket 21 extends in the direction orthogonal to the axis of the bus duct 11, seals the communication region SR inside the bus duct 11, and flames in the axial direction inside the bus duct 11. And regulate heat transfer. The internal extension member composed of the bus bar 12 penetrates the central portion of the partition 20 forming the rectangular panel member constituting the sealing member FS composed of the partition 20 and the partition fixing bracket 21 at right angles to the extending direction of the partition 20. The outer peripheral surface of the bus bar 12 and the inner peripheral surface of the partition 20 in this penetrating portion are sealed. The sealing member FS composed of the partition 20 and the partition fixing bracket 21 limits the transfer of flames and heat from the bus duct 11 on the side where the fire has occurred to the bus duct 11 on the side where the fire has occurred, the temperature rise is reduced, and the outer circumference of the bus duct 11 is reduced. The amount of thermal deformation of is suppressed. As a result, it is possible to prevent the generation of a gap between the bath duct 11 and the mortar layer 16 and the ejection of flame from the inside of the bus duct 11 and prevent the spread of fire between the sections.
Further, by adopting a structure that does not require a large space on the outer periphery of the bus duct 11, it is possible to improve the fire resistance performance without being affected by the surrounding conditions of the bus duct 11 and without the risk of deterioration of ventilation performance and maintainability.

The sealing member FS composed of the partition 20 and the partition fixing bracket 21 attached in FIG. 1 may be arranged in the center of the refractory wall 14 in order to exert the same effect regardless of which section a fire occurs. Although it is desirable, there is no limit to the installation position and the number of these, and if the position is changed and the number is increased within the range where the maintenance of the partition itself is not impossible, the fire resistance performance can be further improved.

The fireproof structure of the compartment penetrating portion in the first embodiment according to the present invention penetrates the opening NP provided in the compartment penetrating portion ST formed in the fireproof partition wall 14 of the building and corresponds to the inner surface of the opening. A tubular penetrating member made of a square tubular bus duct 11 which is a long structure composed of a metal housing having a communication region SR from one side surface 14A to the other side surface 14B of the refractory partition wall 14 inside. A linear internal extension composed of a bus bar 12 composed of a band-shaped conductor that is inherent in the tubular penetrating member and extends inside the tubular penetrating member through the communication region SR along the axis of the tubular penetrating member. The member is provided, and in the communication region SR, the internal extension member made of the bus bar 12 and the inner peripheral surface of the tubular penetrating member made of the bus duct 11 are sealed, and the fireproof partition wall 14 is transferred from one side to the other side. It is characterized in that a sealing member FS composed of a partition 20 for forming a square panel member of a resin molding made of a refractory material or a non-combustible material for preventing communication and a partition fixing bracket 21 having a square frame shape is provided. ..
That is, within the tubular penetrating member formed of the bus duct 11 penetrating the opening NP provided in the partition penetrating portion formed in the fireproof partition wall 14 of the building, within the range corresponding to the fireproof partition wall 14. A partition 20 made of a flame-retardant material or a non-combustible material and a partition fixing metal fitting 21 for partitioning the tubular penetrating member in the longitudinal direction are installed.
With this configuration, the communication region SR inside the tubular penetrating member composed of the bus duct 11 provided in the compartment penetrating portion SP formed in the partition wall of the building and having the internal extending member consisting of the bus bar 12 is sealed. The transfer of flames and heat from the tubular penetrating member formed of the bus duct 11 on the fire occurrence section side to the tubular penetrating member on the non-fire occurrence section side is restricted, and the temperature rise is reduced. As a result, the amount of thermal deformation on the outer circumference of the bus duct on the non-fire section side can be suppressed.

Embodiment 2.
Hereinafter, the fireproof structure of the compartment penetrating portion according to the second embodiment of the present invention will be described with reference to FIG. FIG. 2 is a cross-sectional view showing the configuration of the section penetrating portion.
FIG. 2 shows a bus duct 11 penetrating the refractory wall 14 between the compartments in the compartment penetration portion SP. A frame-shaped reinforcing metal fitting 15 made of iron is attached to the square tubular bus duct 11, and a partition 20 of a resin laminated molded product is further attached to the refractory wall 14 and fixed by the frame-shaped partition fixing metal fitting 21. The temperature rise of the bus duct 11 is suppressed by the sealing member FS composed of the partition 20 and the partition fixing metal fitting 21, and the rigidity of the bus duct 11 is improved by the reinforcing metal fitting 15, and the amount of thermal deformation of the bus duct 11 is significantly suppressed. Therefore, it is possible to prevent the spread of fire between sections. The partition fixing bracket 21 may also serve as a reinforcing bracket.
On the outer peripheral surface of the bus duct 11, square frame-shaped reinforcing metal fittings 15 are provided along the extending directions of the side surfaces 14A and 14B of the refractory wall 14 corresponding to the side surfaces 14A and 14B of the refractory wall 14, respectively. The inner peripheral surface of the four-sided frame-shaped reinforcing metal fitting 15 is fitted and joined to the outer peripheral surface of the bus duct 11 so as to be reinforced, and the flange portion 15f provided at the peripheral end of the reinforcing metal fitting 15 is fireproof with a mortar layer 16. It is fixed to the side surfaces 14A and 14B of the wall 14, respectively.
On the inner peripheral surface of the bus duct 11, square frame-shaped reinforcing metal fittings 15 are provided along the extending directions of the side surfaces 14A and 14B of the refractory wall 14 corresponding to the side surfaces 14A and 14B of the refractory wall 14, respectively. The outer peripheral surface of the four-sided frame-shaped reinforcing metal fitting 15 is fitted and joined to the inner peripheral surface of the bus duct 11 so as to be reinforced, and the flange portion 15f provided at the peripheral end of the reinforcing metal fitting 15 is fireproof with a mortar layer 16. It is fixed to the side surfaces 14A and 14B of the wall 14, respectively.

In the second embodiment shown in FIG. 2, the reinforcing metal fittings 15 are attached to both inside and outside of the bus duct 11, but may be attached to either both sides or one side of both compartments, or both inside or outside the bus duct 11. It may be attached to either.

The fireproof structure of the section penetrating portion in the second embodiment according to the present invention improves the rigidity of the tubular penetrating member made of the bus duct 11 in the configuration in the first embodiment described above, and is a square tubular bus duct. It is fitted into the outer four-circumferential region consisting of the upper and lower both sides and both side surfaces on the outer peripheral surface of 11, or the inner four-circumferential region consisting of the upper and lower both sides and both side surfaces on the inner peripheral surface and is joined so as to be reinforced and orthogonal to the extending direction of the tubular penetrating member. The extending four-sided frame-shaped reinforcing metal fitting 15 is attached to the inner peripheral surface and the outer peripheral surface of the tubular penetrating member formed of the bus duct 11 corresponding to at least one of the one side surface 14A and the other side surface 14B of the partition wall 14. It is characterized in that it is provided on at least one side.
With this configuration, the rigidity of the tubular penetrating member made of the bus duct 11 is reinforced at a portion corresponding to one side surface 14A or the other side surface 14B of the partition wall 14 which is a necessary strengthening point, and the tubular penetrating member made of the bus duct 11 is reinforced. The member can be protected from mechanical damage to ensure functional performance.

Embodiment 3.
Hereinafter, the fireproof structure of the compartment penetrating portion according to the third embodiment of the present invention will be described with reference to FIG. FIG. 3A is a side sectional view showing the configuration of the section penetrating portion, and FIG. 3B is an enlarged view showing the attachment portion of the heat-expandable member 23.
In the third embodiment, a sealing member FS having a partition 20 is attached to the communication region SR inside the bus duct 11 penetrating the opening NP of the refractory wall 14 in the compartment penetration portion SP, and a corner is formed on the outer peripheral surface of the bus duct 11. A heat-expandable member 23 made of rubber, which is nonflammable or flame-retardant and is formed in a square frame shape, is fitted into the outer four-circumferential region consisting of both upper and lower surfaces and both side surfaces on the outer peripheral surface of the tubular bus duct 11. It is attached with a four-sided frame-shaped heat-expandable member fixing bracket 24. A flange portion 24f is provided at one end edge of the heat-expandable member fixing bracket 24, and the heat-expandable member fixing bracket 24 is fixed to the side surfaces 14A and 14B of the refractory wall 14 by the flange portion 24f. At the other end edge of the heat-expandable member fixing bracket 24, a locking portion 24s that restricts the movement of the heat-expandable member 23 in the extending direction of the bus duct 11 between the side surfaces 14A and 14B of the refractory wall 14 is provided. ing. The outer peripheral surface of the heat-expandable member 23 is crimped to the annular main frame portion 24a constituting the main part of the heat-expandable member fixing bracket 24, and the inner peripheral surface of the heat-expandable member 23 is crimped to the outer peripheral surface of the bus duct 11. .. When the temperature rises due to the occurrence of a fire, the heat-expandable member 23 expands, and the partition in which the outer periphery of the bus duct 11 and the mortar layer 16 are formed can accurately respond to the deformation of the bus duct 11 due to the temperature rise. It is possible to prevent the occurrence of a gap between the wall 14 and the opening NP.
Since the temperature rise of the bus duct 11 is reduced by the sealing member FS composed of the partition 20 and the partition fixing bracket 21, the thermal deformation of the outer circumference of the bus duct 11 is significantly reduced, and the bus duct generated by the deformation is reduced. Since the heat-expandable member 23 fills the slight gap between the 11 and the mortar layer 16, the spread of fire between the compartments can be prevented more reliably.

The fireproof structure of the compartment penetrating portion according to the third embodiment according to the present invention has a square frame shape on the outer peripheral surface of the tubular penetrating member composed of the square tubular bus duct 11 in the configuration of the first embodiment or the second embodiment. The nonflammable or flame-retardant heat-resistant heat-expandable member 23 is attached by the heat-expandable member fixing bracket 24 and installed. The fixture made of the heat-expandable member fixing bracket 24 forms a four-sided frame shape, and has a flange portion 24f at one end peripheral portion thereof to which the heat-expandable member fixing bracket 24 is fixed to the side surface 14A or 14B of the refractory wall 14. The inner peripheral surface of the frame-shaped portion is crimped to the outer peripheral surface of the annular heat-expandable member 23, and is pressure-welded and sandwiched between the outer peripheral surface of the tubular penetrating member formed of the bus duct 11. The four-sided frame-shaped refractory heat-expandable member 23 is fitted into the four outer peripheral regions of the outer peripheral surface of the square tubular bus duct 11 and consists of both upper and lower surfaces and both side surfaces, and the inner peripheral surface thereof is crimped to the outer peripheral surface of the bus duct 11. It is a thing.
With this configuration, it is crimped on the inner peripheral surface of the frame-shaped portion of the fixture made of the heat-expandable member fixing bracket 24 fixed to the side surface of the refractory wall 14, and is pressure-welded to the outer peripheral surface of the tubular penetrating member made of the bus duct 11. The frame-shaped fire-resistant heat-expandable member 23 sandwiched between the side surfaces 14A and 14B of the fire-resistant wall 14 and the outer peripheral surface of the tubular penetrating member including the bus duct 11 is sealed by the heat-expanding action of the heat-expandable member 23. Therefore, it is possible to more reliably prevent the spread of fire between sections.

Embodiment 4.
Hereinafter, the fireproof structure of the compartment penetrating portion according to the fourth embodiment of the present invention will be described with reference to FIG. FIG. 4A is a side sectional view showing the configuration of the section penetrating portion, and FIG. 4B is an enlarged view showing the attachment portion of the refractory sheet 17.
In the fourth embodiment, the sealing member FS composed of the partition 20 and the partition fixing bracket 21 is attached to the communication region SR inside the bus duct 11 penetrating the opening NP of the refractory wall 14 in the partition penetrating portion SP, and the bus duct is attached. A frame-shaped refractory sheet 17 made of silica fiber or the like is attached to the outer peripheral surface of 11 with a refractory sheet fixing metal fitting 18 made of fixing metal fittings 18a and 18b. One end edge of the frame-shaped refractory sheet 17 is fixed to the outer peripheral surface of the bus duct 11 by the fixing bracket 18a. A flange portion 17f is provided at the other end edge of the frame-shaped refractory sheet 17, and the flange portion 17f is fixed to the side surface 14A of the partition wall 14 by the fixing bracket 18b, whereby the other end of the frame-shaped refractory sheet 17 is provided. The edges are fixed.
Since the temperature rise of the bus duct 11 is reduced by the sealing member FS composed of the partition 20 and the partition fixing bracket 21, the thermal deformation of the outer circumference of the bus duct 11 is significantly reduced, and the bus duct generated by the deformation is reduced. Since the fireproof sheet 17 hides a slight gap between the 11 and the mortar layer 16, it is possible to more reliably prevent the spread of fire between the sections.

The refractory structure of the section penetrating portion in the fourth embodiment according to the present invention has the outer circumference of the tubular penetrating member made of the square tubular bus duct 11 in any of the above-described configurations of the first to third embodiments. A four-sided frame-shaped refractory sheet 17 is installed on the surface of the bus duct 11 so as to be fitted into and covered the four outer peripheral regions of the outer peripheral surface of the bus duct 11, and the peripheral end of the frame-shaped refractory sheet 17. It is fixed to the tubular penetrating member made of the bus duct 11 by one fixing metal fitting 18a of the fixing tool made of the fixing metal fitting 18 in which one is paired, and is provided on the other side of the peripheral end portion of the frame-shaped fireproof sheet 17. The flange portion 17f is fixed to the side surface 14A or 14B of the partition wall 14 by the other fixing bracket 18f.
With this configuration, the frame-shaped refractory sheet 17 can more reliably prevent the spread of fire between sections.

Embodiment 5.
Hereinafter, the fireproof structure of the compartment penetrating portion according to the fifth embodiment of the present invention will be described with reference to FIG. FIG. 5A is a side sectional view showing the configuration of the section penetrating portion, and FIG. 5B is an enlarged view showing the attachment portion of the heat-expandable member 23.
In the fifth embodiment, in addition to the configurations in the third and fourth embodiments, by attaching the reinforcing metal fitting 15 to the inner peripheral surface of the bus duct 11, the rigidity of the bus duct 11 is further improved, so that the amount of thermal deformation is increased. It is reduced and the fire resistance is improved. The reinforcing metal fitting may also serve as the partition fixing metal fitting 21, and FIG. 5 shows a case where the partition fixing metal fitting 21 is used as the reinforcing metal fitting.
Similarly, in addition to the configuration in the fourth embodiment, the reinforcing metal fitting 15 may be attached to the bus duct 11.

The fireproof structure of the section penetrating portion according to the fifth embodiment according to the present invention improves the rigidity of the tubular penetrating member made of the bus duct 11 in the configuration according to the third or fourth embodiment described above. A four-sided frame that is fitted into the four inner peripheral regions of the inner peripheral surface of the square tubular bus duct 11 and is reinforced so as to extend perpendicular to the extending direction of the tubular penetrating member. The reinforcing metal fitting 15 is provided on the inner peripheral surface of the tubular penetrating member made of the bus duct 11 so as to correspond to at least one of the one side surface 14A and the other side surface 14B of the fireproof partition wall 14.
Further, the reinforcing tool made of the reinforcing metal fitting 15 may also serve as the partition fixing metal fitting 21 for fixing the sealing member having the partition 20. In addition to performing the original function of the reinforcing metal fitting 15, the reinforcing metal fitting 15 can perform the function of the partition fixing metal fitting 21.
With this configuration, the reinforcing function of the tubular penetrating member made of the bus duct 11 can be performed more reliably. Further, when the reinforcing metal fitting 15 is also used as the partition fixing metal fitting 21, the sealing function by the sealing member composed of the partition 20 and the partition fixing metal fitting 21 and the reinforcing function of the tubular penetrating member including the bus duct 11 are performed. It can be done reliably with a simple structure.

Embodiment 6.
Hereinafter, the fireproof structure of the compartment penetrating portion according to the sixth embodiment of the present invention will be described with reference to FIG. FIG. 6A is a side sectional view showing the configuration of the section penetrating portion, and FIG. 6B is an enlarged view showing the attachment portion of the heat-expandable member 23.
In the sixth embodiment, in addition to the configuration of the third embodiment, the case where the four-sided frame-shaped fixing metal fitting 24 of the heat-expandable member 23 is used as a reinforcing metal fitting for the tubular penetrating member made of the bus duct 11 is shown. Even if the reinforcing metal fitting 15 is not used as in the fifth embodiment shown in FIG. 5, the rigidity of the bus duct 11 is further improved, so that the amount of thermal deformation can be reduced and the fire resistance can be improved.
Similarly, in addition to the configuration according to the fourth embodiment, the fixing metal fitting 18a of the refractory sheet 17 may be used as the reinforcing metal fitting.

In the configuration of the third embodiment described above, the fireproof structure of the compartment penetrating portion in the sixth embodiment according to the present invention is formed on one end peripheral portion of a fixture made of the four-sided frame-shaped fixing bracket 24 of the four-sided frame-shaped heat-expandable member 23. A flange portion 24f fixed to the side surface 14A or 14B of the refractory wall 14 is provided, and the bus duct 11 is reinforced by joining to the outer peripheral surface of the tubular penetrating member made of the bus duct 11 at the other end peripheral edge of the four-sided frame-shaped fixing bracket 24. The four-sided frame-shaped reinforcing portion 24r is provided, and the fixing metal fitting 24 of the heat-expandable member 23 is used as a reinforcing metal fitting for improving the rigidity of the penetrating member.
With this configuration, the thermally expandable member 23 can be fixed, and the reinforcing function of the tubular penetrating member made of the bus duct 11 can be accurately performed with a simple configuration.

The fireproof structure of the compartment penetrating portion in the sixth embodiment according to the present invention has a four-sided frame shape in which one end of the fireproof sheet 17 is fixed to the tubular penetrating member made of a bus duct 11 in the configuration of the fourth embodiment described above. The fixture 18a of the refractory sheet 17 is provided with a reinforcing portion to be joined to the outer peripheral surface of the tubular penetrating member composed of the bus duct 11, and the fixture 18a of the refractory sheet 17 is a reinforcing tool for improving the rigidity of the penetrating member. It is characterized by the fact that.
With this configuration, the refractory sheet 17 can be fixed, and the reinforcing function of the tubular penetrating member made of the bus duct 11 can be accurately performed with a simple configuration.

Embodiment 7.
Hereinafter, the fireproof structure of the compartment penetrating portion according to the seventh embodiment of the present invention will be described with reference to FIG. 7. FIG. 7A is a side sectional view showing the configuration of the section penetrating portion, and FIG. 7B is a sectional view schematically showing the structure of the inspection port 22.
In addition to the configurations of the first to sixth embodiments, by providing the inspection port 22 having a flange structure in the vicinity of the refractory wall 14, the inspection port 22 exerts the same effect as the rib in the longitudinal direction of the bus duct 11, and the bus duct. The rigidity of 11 is further improved. Therefore, the amount of thermal deformation on the outer circumference of the bus duct 11 is reduced, and the fire resistance performance is further improved.
The inspection port 22 is provided on the peripheral edge of the opening of the inspection opening NT formed by penetrating the square tubular conductive outer cover member UC made of a metal housing at the ground potential that constitutes the outer peripheral portion of the bus duct 11. It is composed of an inspection flange portion 22f and an inspection lid 22a that is detachably provided on the inspection flange portion 22f and closes the inspection opening NT so as to be openable and closable.

The fireproof structure of the compartment penetrating portion according to the seventh embodiment according to the present invention is the tubular penetrating portion composed of a bus duct 11 in the vicinity of the partition wall end portion in any of the configurations of the above-described first to sixth embodiments. It is characterized in that an inspection port 22 having a flange structure is provided for inspecting the communication region SR inside the member.
With this configuration, the required inspection work inside the tubular penetrating member made of the bus duct 11 can be easily performed, and the rigidity of the tubular penetrating member made of the bus duct 11 can be strengthened.

Although the configuration in which one sealing member FS is provided has been described above, the present invention is not limited to this, and two or more sealing member FSs may be provided. In this case, the transfer of flame or heat from the tubular penetrating member formed of the bus duct 11 on the fire occurrence section side to the tubular penetrating member on the non-fire occurrence section side can be further restricted. Further, since there are a plurality of sealing member FSs, the bus duct 11 can be reinforced by the plurality of sealing members FS, and the reinforcing metal fittings 15 can be eliminated, which eliminates the on-site installation work and leads to cost reduction.
Further, the position where the sealing member FS is provided is described from the one side surface 14A of the refractory wall 14 to the substantially central portion of the other side surface 14B, but the present invention is not limited to this, and the position is not limited to this. It may be provided anywhere between the side surfaces 14B. As a result, the sealing member FS approaches the one side surface 14A or the other side surface 14B of the refractory wall 14, so that maintenance is possible even when the refractory wall 14 is thick. Further, even if the refractory wall 14 is not thick, the sealing member FS approaches the side surface of the refractory wall 14, so that maintenance can be easily performed. Further, when the partition has a high blocking performance, it is possible to further reduce the temperature rise on the non-heated side by moving it closer to the heated side, and the fire resistance is improved.

11: Bus duct (cylindrical penetrating member)
12: Busbar (intrinsic extension member)
14: Fireproof wall (partition wall)
15: Reinforcing metal fittings (reinforcing tools)
16: Mortar layer 17: Fireproof sheet 18: Fireproof sheet fixing bracket (fixing tool)
20: Partition (sealing member)
21: Partition fixing bracket (sealing member)
22: Inspection port 23: Thermally expandable member 24: Thermally expandable member fixing bracket (fixing tool)

Claims (10)

A tubular penetrating member that penetrates an opening formed in a partition wall of a building and has a communication region inside that extends from one side to the other side of the partition wall corresponding to the inner surface of the opening, and the tubular penetrating member. An internal extension member extending through the communication region along the axis of the tubular penetration member is provided inside the member, and in the communication region, an outer peripheral surface of the internal extension member and an inner peripheral surface of the tubular penetration member Between the partition that closes the space and prevents communication from one side of the partition wall to the other side, and the outer peripheral surface of the tubular penetrating member in the communication region and the inner surface of the opening of the partition wall. A fireproof structure of a compartment penetrating portion, characterized in that it is provided with a mounted mortar layer and a reinforcing tool provided on an inner peripheral surface of the tubular penetrating member in the communication region. The fireproof structure of a compartment penetrating portion according to claim 1, wherein the partition is fixed to the tubular penetrating member by a partition fixing bracket. The fireproof structure of a compartment penetrating portion according to claim 1 or 2, wherein the tubular penetrating member is composed of a bus duct, and a bus bar is provided as the internal extending member. Reinforcing tools for improving the rigidity of the tubular penetrating member are provided on at least one of the outer peripheral surface and the inner peripheral surface of the tubular penetrating member corresponding to at least one side surface and the other side surface of the partition wall. The fireproof structure of the compartment penetrating portion according to any one of claims 1 to 3, which is characteristic. A fire-resistant heat-expandable member is installed on the outer peripheral surface of the tubular penetrating member, and the fire-resistant heat-expandable member is pressure-welded between the fixture fixed to the partition wall and the outer peripheral surface of the tubular penetrating member. The fireproof structure of a compartment penetrating portion according to any one of claims 1 to 4, characterized in that it is sandwiched. A fireproof sheet was installed on the outer periphery of the tubular penetrating member, one end of the fireproof sheet was fixed to the tubular penetrating member, and the other end of the fireproof sheet was fixed to the side surface of the partition wall. The fireproof structure of the compartment penetrating portion according to any one of claims 1 to 5, wherein the section penetrating portion is characterized in that. The stiffeners improve the rigidity of the tubular penetrating member, the compartment through portion according to claims 1, characterized in that is also used as fitting sealing covering section member in any one of the claims 6 or Fireproof structure. A reinforcing portion to be joined to the outer peripheral surface of the tubular penetrating member is provided on a fixture that is fixed to the partition wall and holds the fire-resistant heat-expandable member by pressure contact with the outer peripheral surface of the tubular penetrating member. The fireproof structure of a compartment penetrating portion according to claim 5, wherein the fixing tool for the heat-expandable member is a reinforcing tool for improving the rigidity of the tubular penetrating member. The fixture for fixing one end of the refractory sheet to the tubular penetrating member is provided with a reinforcing portion to be joined to the outer peripheral surface of the tubular penetrating member, and the fixture of the refractory sheet is attached to the tubular penetrating member. The fireproof structure of a compartment penetrating portion according to claim 6, wherein the reinforcing tool is used to improve the rigidity. Refractory compartment through portion according to any one of claims 1 claim 9 or characterized in that a access port flange arrangement for checking the communication area inherent in the tubular penetrating member Construction.

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