CN113445542A - Intelligent assembled fire wall of power pipe gallery - Google Patents

Abstract

The invention belongs to the field of electric power comprehensive pipe gallery safety equipment, and particularly relates to an intelligent assembly type firewall for an electric power pipe gallery, which comprises a pull type fireproof assembly, wherein the pull type fireproof assembly comprises a protection plate and a fireproof module, the edges of the protection plate of the prefabricated pull type fireproof assembly are mutually attached to form a closed protection surface, when cable enrichment or replacement is carried out, the corresponding prefabricated pull type fireproof assembly is only required to be integrally disassembled, repeated breaking and punching of the protection plate of the firewall is avoided, the service life of the firewall is prolonged, the reduction of the fireproof performance of the firewall caused by secondary plugging after breaking and disassembling is avoided, meanwhile, the construction efficiency is improved, the firewall is timely recovered, and the fire hazard of construction is reduced.

Description

Intelligent assembled fire wall of power pipe gallery

Technical Field

The invention belongs to the field of fire walls of power pipe corridors, and particularly relates to an assembled fire wall.

Background

The utility tunnel, i.e. the tunnel space that the city underground collects various engineering pipelines such as electric power, communication, gas, heat supply or water supply and drainage in an organic whole, be used for laying the utility tunnel of cable such as cable or communication optical cable promptly the power pipe gallery specially, & lt & gtcity utility tunnel engineering specification (GB 50838-2015) stipulates that the natural gas pipeline cabin and the cabin that holds power cable should adopt the incombustible wall body that fire endurance is not less than 3.0h to separate in every 200m, be used for carrying out the fire separation otherwise the wall body forms a closed cross section, the general name is fire wall, need set up one side in the power pipe gallery and prevent hot wall every 200m, the cable passes through and lays and prevents hot wall.

There are two main types of firewalls in the prior art: the first one is that masonry materials such as refractory bricks and the like are used for building two-sided fireproof wall surfaces, and a fire retardant bag is filled between the two-sided fireproof wall surfaces; the second one adopts the metal frame construction both sides installation guard plate, fills between the guard plate with the fire prevention module who makes with fire-resistant material and have certain shape and size specification, and chinese patent CN 211777597U, CN207079621U and chinese publication CN107130635A, CN109811796A all propose different technical schemes to the fire resistive construction between the concrete guard plate.

At least one problem that prior art exists lies in, along with the development and construction in cities and towns, when the cable in the electric power piping lane carries out the increase-volume, the construction of change, need break the firewall face or guard plate open earlier, then will fill a large amount of back-fire relief package or the fire prevention module in cable top and all take out, backfill behind the adjustment cable, need to adjust again in order to guarantee the gas tightness to the trompil of firewall face or guard plate, just can carry out the increase-volume or the change of corresponding cable, firewall face or guard plate breaks repeatedly and tears open or open the hole among the prior art, influence the life of preventing hot wall, the long work load of work period of work is big, can not in time obtain recovering when preventing hot wall, secondary risk such as conflagration hidden danger can also improve thereupon during the construction.

Disclosure of Invention

The invention aims to provide a firewall with less operation steps, small destructiveness, high component reuse rate and good air tightness in the construction of capacity increase and replacement of cables in a power pipe gallery, so as to reduce the influence of repeated breaking or punching adjustment procedures on the service life of the firewall in the prior art, effectively shorten the construction period, timely recover the effective state of the firewall and avoid the problem of increased construction fire hazard.

The technical scheme provided by each embodiment of the invention is that the intelligent assembled firewall for the power pipe gallery comprises a closed protective surface which is formed on the outermost side of a firewall body and is basically orthogonal to the direction of the pipe gallery so as to meet the requirement of the prior technical specification, and the technical idea is that the firewall body also comprises a drawing type fireproof component which is integrally designed into a column shape and is convenient to be filled on the firewall body along the direction of the pipe gallery; at least one end face of the pull-type fireproof assembly is designed to be a protection plate, and after the pull-type fireproof assembly is filled into the fireproof wall body, at least one part of the protection surface consists of the protection plate; the drawing type fireproof component is internally provided with a fireproof module. The installation of the invention means that the fireproof modules are directly or indirectly fixedly connected with the protection plate, and when a pull-type fireproof assembly is filled on the fireproof wall body or is pulled out from the fireproof wall body, all the fireproof modules installed on the pull-type fireproof assembly move or are fixed along with the whole protection plate. By means of the design, the drawing type fireproof component does not need to be provided with closed or semi-closed side panels for enveloping the fireproof modules, namely, part or all of the side faces of the drawing type fireproof component are composed of the side faces provided with the plurality of fireproof modules on the inner sides of the drawing type fireproof component. In some embodiments, the protective plate is internally provided with a plurality of mounting columns, each fireproof module is fixed on each mounting column in a series connection mode, and all the side faces of the pull-type fireproof assembly consist of the outer side faces of the fireproof modules mounted on the outer mounting columns. In other embodiments, one side panel of the pull-type fireproof assembly is integrally formed or fixedly connected with the protection plate, a plurality of mounting columns are arranged on the side panel, each fireproof module is fixed on each mounting column in series, and the side surface of the pull-type fireproof assembly except the side panel consists of the outer side surface of the fireproof module mounted on the outer mounting column; in other embodiments, some or all of the sides of the pull-out fire protection assembly are configured as perforated or multi-slit side panels that are filled with fire protection modules such that the pull-out fire protection assembly forms a cage-like structure in which the interior fire protection modules are visible from the outside. It is easy to see that any installation structure of the prior art that the fire protection modules are adhered, clamped, strung, cast and fixed on the inner side of the protection plate and the fire protection modules are exposed on all or part of the side surface of the pull-out fire protection assembly can be regarded as an embodiment included in the invention.

One improvement of the above technical scheme is that: the length of the pull-type fireproof component is equal to the thickness of the fireproof wall body, and two end faces of the pull-type fireproof component are both designed into the fireproof plate. The improvement is based on the fact that, by means of one filling operation, the two end-face fire protection plates, i.e. the protective surfaces with their respective peripheries, form a gas-tight structure in the filling area, without the need for a separate, one-piece protective plate on the other side.

Another improvement of the above technical solution is: the length of the pull-type fireproof component is smaller than the thickness of the fireproof wall body, and the end face, exposed outside the fireproof wall body, of the pull-type fireproof component is designed to be the fireproof plate. This modified effect lies in, through filling, and the design is the structure that the terminal surface of PLASTIC LAMINATED and the protective surface of preventing hot wall body one side around rather than forming the gas tightness in the local formation of filling, and the other end can be by setting up solitary integral type guard plate in addition and realize preventing the protective surface of hot wall body opposite side, perhaps, the protective surface of preventing hot wall body opposite side is formed by the guard plate of the other pull formula fire prevention subassembly that opposite direction filled.

In some preferred embodiments, two pull-out fire protection assemblies inserted at two ends respectively are arranged in pairs at the same position of the fire protection wall body; the length sum of the two pull-type fireproof components is less than or equal to the thickness of the fireproof wall body.

In some further preferred embodiments, the same side of the two paired pull fire protection assemblies is provided with a wire groove penetrating through the two respective end surfaces thereof, so as to form a channel for the cable to pass through after the two paired pull fire protection assemblies are loaded at the same position.

In some further preferred embodiments, a partition component is further arranged between the two pull-out fire protection components arranged in pairs, and the partition component protrudes towards the inner side of the channel so as to block a gap between the pull-out fire protection components penetrating through the channel and the cable.

Another improvement of the above technical solution is: after the pull-type fireproof assembly is filled into the fireproof wall body, a first sealing strip formed by an expansion type fireproof material is arranged between the edge of the protection plate of the pull-type fireproof assembly and the adjacent protection surface.

Another improvement of the above technical solution is: the pull-type fireproof component comprises a first fireproof component, and at least one side face of the first fireproof component is provided with a wire groove penetrating through two end faces of the first fireproof component.

Another improvement of the above technical solution is: the support frame is arranged on the section of the pipe gallery; the drawing type fireproof component comprises a second fireproof component; the second fireproof assembly is filled on the supporting plate of the supporting frame, the protective plate of the second fireproof assembly comprises a convex edge which protrudes outwards from the side surface of the second fireproof assembly, and the inner side surface of the convex edge is designed to be a sealing surface; and a second sealing strip formed by an expansion type fireproof material is arranged between the sealing surface and the outer end surface covered by the sealing surface.

Preferably, some embodiments of the above modifications include one or more of the following designs:

the support plate comprises an upper end plate and a lower end plate, and a fireproof interlayer made of an intumescent fireproof material is arranged between the upper end plate and the lower end plate. In this design, when some need thick backup pad in order to realize the bearing requirement or set up parts such as slide rail, screw through-hole, also possess certain fire behavior between two installation spaces that are separated by the backup pad.

And designing two, wherein the protection plate and the support frame are correspondingly provided with connecting holes, and the protection plate and the support frame penetrate through the connecting holes through bolts and are fixedly connected. In this design, pull formula fire prevention subassembly is connected with braced frame through the connecting hole of its guard plate to detachable is fixed, can change the operation to the part of preventing the hot wall body, demolishs a plurality of pull formula fire prevention subassemblies with the horizontality in succession, can carry out the cable on this layer and change and needn't carry out any processing to preventing other positions of hot wall.

Thirdly, the supporting frame further comprises a fireproof door, and the fireproof door comprises a fireproof door body and upright posts arranged on two sides of the fireproof door body; the upright post is detachably connected with the free end of the supporting plate on the same side of the supporting frame. In this design, because the independent structure of stand, can the unilateral dismouting, when preventing that hot wall body design has fire door, only when carrying out the dilatation or changing to the cable of preventing fire door one side, only demolish this side stand and can accomplish the construction.

And a detachable auxiliary support column is arranged between two adjacent support plates, and is used for suspending the support plate below the auxiliary support column from the support plate above the auxiliary support column and/or supporting the support plate above the auxiliary support column from the support below the auxiliary support column. In this design, supplementary support column is used for still making and prevents that hot wall body keeps the essential structure when possessing and demolish pull formula fire prevention subassembly, perhaps, demolishs pull formula fire prevention subassembly after, demolishs and installs and provide a cable removal channel simultaneously at not ring braced frame for the cable along the transversal horizontal direction of piping lane.

Fifthly, a clamp for fixing and clamping the cable is further arranged on the supporting plate; the clamping device comprises a clamping piece located on one side of the pull-type fireproof assembly and an abutting block located on one side of the supporting plate. In the design scheme, the cable is tightly jacked to the clamping piece by the jacking block in an adjustable mode, and the clamping piece is fixed with the supporting plate, so that the cable is difficult to axially, radially move and circumferentially rotate relative to the supporting plate after being fixed by the clamping piece. Because need use the gap between fire prevention mud filling cable and the pull formula fire prevention subassembly in the construction, under the condition that does not use the integral type guard plate, the guard plate of the pull formula fire prevention subassembly terminal surface that is equipped with the wire casing will have the trompil that is far greater than traditional guard plate, and fixture helps resisting the ageing produced fracture of fire prevention mud on fire prevention body surface and in fire prevention body to the fixed of cable, and the gap that these fractures produced probably influences the gas tightness of preventing the fire prevention body.

The intelligent assembled fire wall for the power pipe gallery described in at least one specific embodiment comprises a prefabricated pull-out type fire prevention assembly, wherein the pull-out type fire prevention assembly consists of a protection plate and a fire prevention module, and the fire prevention module is fixedly connected with one end of the protection plate. The pull-type fireproof assembly can be of various types, and a wire slot which runs through the protective plate and the fireproof module is formed in one of the pull-type fireproof assembly. After the pull-type fireproof assembly is installed into the assembled fireproof wall, the edges of the protection plates of the adjacent protection assemblies are mutually attached to form a closed protection surface. The edge of the protection plate is provided with a first sealing strip made of an expansion type fireproof material.

The fabricated fire protection wall described in at least one specific embodiment further includes a support frame, the fire protection module is mounted on a support plate of the support frame, a sealing surface is disposed on a first end surface of the support plate, the sealing surface covers the support frame, and a second sealing strip made of intumescent fire protection material is disposed between the sealing surface and the support frame. Preferably, the supporting plate comprises an upper end plate and a lower end plate, a fireproof interlayer made of an intumescent fireproof material is arranged between the upper end plate and the lower end plate, connecting holes are correspondingly formed in the protecting plate and the supporting frame, and the protecting plate and the supporting frame are fixedly connected through bolts penetrating through the connecting holes.

The power pipe gallery intelligence assembled fire wall that describes in at least one concrete embodiment still includes prevents fire door, prevents fire door and includes the stand and prevents fire door body, prevents that fire door body sets up between the stand, is provided with the door opening of preventing fire door of installation on the braced frame, and the backup pad interval of the setting of a plurality of levels in both sides of door opening is arranged, the first end and the braced frame fixed connection of backup pad, and the second end and the stand of backup pad can be dismantled and be connected. Preferably, the second ends of the adjacent support frames and the adjacent support plates and the second ends of the two adjacent support plates are detachably provided with auxiliary support columns, and the auxiliary support columns play a role in supporting or suspending the second ends of the support plates. A pull-out type fireproof component is respectively inserted into two sides of the supporting frame, and wire grooves used for accommodating cables are communicated on the two pull-out type fireproof components after installation is completed to form a channel for the cables to pass through.

According to the technical scheme disclosed by the invention through the description of the multiple embodiments, the edges of the protection plates of the prefabricated pull-out type fireproof components are mutually attached to form a closed protection surface, and when cable enrichment or replacement is carried out, only one or more corresponding prefabricated pull-out type fireproof components are required to be integrally detached, so that repeated breaking and punching of the protection plates of the fireproof walls are avoided, the service life of the fireproof walls is prolonged, the fireproof performance of the fireproof walls is prevented from being reduced due to secondary plugging after breaking and detaching, the construction efficiency is improved, the fireproof walls are timely recovered, and the construction fire hazard is reduced.

Drawings

FIG. 1 is a schematic structural diagram of an intelligent prefabricated firewall for a power pipe rack according to an embodiment of the invention;

FIG. 2 is a schematic view of the construction of the drawer fire prevention assembly of the present invention;

FIG. 3 is an enlarged view of a portion of the embodiment A in FIG. 2;

FIG. 4 is a schematic cross-sectional view of an intelligent fabricated firewall for a power pipe rack according to an embodiment of the invention;

FIG. 5 is a schematic cross-sectional view of an intelligent fabricated firewall for a power pipe rack according to another embodiment of the present invention;

FIG. 6 is a schematic structural view of another intelligent prefabricated fire wall for a power pipe gallery according to the present invention;

FIG. 7 is a schematic structural view of another intelligent prefabricated fire wall for a power pipe gallery in accordance with the present invention;

FIG. 8 is a schematic view of an assembly of the pull fire prevention assembly of the present invention;

FIG. 9 is a schematic structural view of a fender of the retractable fire protection assembly according to an embodiment of the invention;

FIG. 10 is a schematic view of a support frame according to the present invention;

FIG. 11 is a schematic view of the assembly of a fixture of the present invention;

in the figure: 1: a pull-out fire protection assembly; 11: a protection plate; 111: a first seal strip; 112: a sealing surface; 113: a second seal strip; 12: a fire prevention module; 13: a wire slot; 2: a support frame; 21: a support plate; 211: an upper end plate; 212: a lower end plate; 213: a fire-resistant interlayer; 3: a fire door; 31: a column; 32: a fire door body; 4: auxiliary supporting; 5: a partition assembly; 6: a fixture; 61: a fastener; 62: a propping block; 7: a handle; 8: a cable.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions provided by the present invention will be further clearly and completely described below with reference to the drawings and specific embodiments provided in the present specification, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It needs to be explained at first, according to technical specification, when laying cables such as cable, optic fibre, composite cable along the piping lane direction in electric power utility piping lane (hereinafter referred to as piping lane for short), in order to slow down and prevent that the conflagration from stretching along the piping lane, need set up on a plurality of sections of piping lane and prevent hot wall, the cable is generally fixed on the piping lane wall by the outrigger, obviously the piping lane section is basically with cable laying direction quadrature. According to the construction requirements of the firewall, the whole firewall needs to meet certain air tightness, namely at least one outer end face of the firewall needs to be a protective face with air tightness after the construction is finished. With the continuous development of power grids, the power pipe gallery is widely applied to urban infrastructure due to the advantages of safe and reliable power supply and no influence from changes of urban ground space, climate and the like. The structure of the firewall is generally a sandwich structure in which two outer side end faces are hard protection plates (or walls) and a fireproof module (prefabricated fireproof filler, fireproof bag and the like) is filled in the middle of each hard protection plate, and cables continuously penetrate through the protection plates and the fireproof modules on one side and the fireproof plates on the other side to penetrate through the firewall. But among the prior art power piping lane prevent hot wall, when carrying out cable increase capacity or change construction, because the cable generally can not realize its axial pull installation, need earlier prevent hot wall and carry out whole or local broken tearing open, then just can remove through radially moving the cable at its horizontally, the installation perhaps changes, some new technologies adopt prefabricated fire prevention module in order to make things convenient for whole taking out and installation, but still can not avoid both sides fire wall face or guard plate to break open the trompil or be under construction again, just can accomplish the change dilatation to the cable. On one hand, the construction process of breaking and dismantling the holes on the fireproof wall surface or the protection plate is time-consuming and labor-consuming, the construction efficiency is seriously influenced, the fireproof wall surface or the protection plate is repeatedly broken and dismantled, the service life of the fireproof wall is shortened, and the fireproof performance of the fireproof wall is seriously influenced; on the other hand, prefabricated fire prevention module need realize the compatibility of maximum cable diameter, when matcing less cable, or change the fire prevention module, or the wall fills thick fire prevention mud in order to realize airtight, nevertheless because cable axial, circumference or radial mechanical properties change (the tension that common cable itself expend with heat and contract with cold and cause changes, frequent construction causes accumulative displacement or tension change, cable fastener elastic change such as outrigger arouses tension change) cause easily that fire prevention mud splits and then runs through the gap of preventing hot wall, seriously influence its airtight characteristic.

In view of the above, the present invention provides an intelligent assembled firewall for an electric power pipe gallery, wherein a firewall body is entirely or partially composed of prefabricated pull-out type fireproof components, and the pull-out type fireproof components are characterized in that a fireproof module and local protection plates on one side or two sides are combined into a whole to realize the pull-out type fireproof components near cables along the extension direction of the cables, and when the pull-out type fireproof components are completely pulled out of the section of the firewall body along the cable direction, the cables pass through the firewall sub-parts to have complete radial freedom of movement, thereby facilitating the installation, replacement and close-distance position adjustment of the cables. After the pull-type fireproof assembly is filled into the fireproof wall body along the cable direction, the protective plate edge and other surrounding protective surfaces are mutually attached to form a closed protective surface, and the attachment can be realized by means of conventional connection modes such as riveting, bolts, buckles, a sealing surface structure and a sealing strip. It is easy to see that in the embodiment of the invention, when cable capacity increasing or cable replacement is carried out, only the corresponding prefabricated pull-out type fireproof component needs to be integrally detached, repeated breaking and punching of the fireproof wall protection plate is avoided, the service life of the fireproof wall is prolonged, the fireproof performance of the fireproof wall is prevented from being reduced due to secondary plugging after breaking and detaching, the construction efficiency is improved, the fireproof wall is timely recovered, and the fire hazard of construction is reduced.

Referring to fig. 1, 2, 3 and 4, in a first embodiment of the present invention, an intelligent fabricated firewall for an electric power pipe gallery is implemented in a small underground pipe gallery (cable channel), one protective surface of the intelligent fabricated firewall is completely formed by splicing protective plates 11 of six drawer-type pull-out fire prevention assemblies 1, the other protective surface is a whole protective plate, one side of each pull-out fire prevention assembly 1 is a protective plate 11, the other side of each pull-out fire prevention assembly is a fire prevention module 12 fixed on the protective plate 11, the fire prevention module 12 is fixedly connected with the inner side end surface of the protective plate 11, each pull-out fire prevention assembly 1 penetrates through the protective plate 11 and the fire prevention module 12 and is provided with a wire chase 13, that is, each pull-out fire prevention assembly 1 is the first fire prevention assembly of the present invention; some of the pull fire protection assemblies 1 are also the second fire protection assemblies shown in fig. 2, and the protection plate 11 of the second fire protection assemblies comprises a convex edge protruding outwards from the side surface of the second fire protection assemblies, and the inner side surface of the convex edge is designed as a sealing surface 112; referring to fig. 3 and 4, when the sealing surface covers the outer end surface protection plate 11 of the adjacent first fireproof component, a second sealing strip 113 formed by an intumescent fireproof material is arranged between the sealing surface 112 and the outer end surface covered by the sealing surface, and after the pull-out fireproof component 1 is installed in the intelligent assembly type firewall of the power pipe gallery, the edges of the protection plates 11 of the adjacent protection components are mutually attached to form a closed protection surface. The protection plates 11 of the adjacent pull-out type fireproof assemblies 1 are fixedly connected through riveting, bolts or bayonets. It is easily understood that each drawing type fireproof component 1 in the embodiment comprises the drawing type fireproof component 1 without the convex edge so as to be spliced with the protection plate of the second protection component provided with the convex edge. In other embodiments, according to the difference of the dividing shapes, some pull-out fire protection assemblies 1 without wire grooves can be arranged at positions without cables for splicing. These embodiments only include one integral panel that only needs to be adjusted for demolition during construction, while the other panel does not need to be removed integrally due to its splice structure.

In an embodiment referring to fig. 1, fig. 2, fig. 3, fig. 5, the fire wall body of the intelligent fabricated fire wall for the electric power pipe gallery is formed by inserting and overlapping six drawer type drawing type fire prevention assemblies 1 from two directions, and each drawing type fire prevention assembly 1 belongs to both the first fire prevention assembly and the second fire prevention assembly, and the difference is that two end faces of the drawing type fire prevention assembly 1 are designed as protection plates 11, and two protection faces of the fire wall body are formed by splicing the protection plates 11 on the end faces of each drawing type fire prevention assembly 1. When the cable that certain pull-out type fire prevention subassembly 1 wire casing 13 covered needs to be adjusted, only need demolish rivet, bolt, the buckle on two terminal surfaces of this pull-out type fire prevention subassembly 1 and can follow the pull-out type fire prevention subassembly 1 of a direction release this pull-out type fire prevention subassembly 1 and top, can accomplish the construction, needn't wholly break and tear open and prevent the wall body.

Easily understand, the closed cross section that the wall formed a perpendicular to piping lane trend is prevented to electric power piping lane intelligence assembled in the above-mentioned embodiment, 8 lines of cable move towards perpendicular to fireproof wall body along the piping lane and pass fireproof wall body and lay, a plurality of pull formula fireproof component 1 are piled up together, the border of the guard plate 11 of adjacent pull formula fireproof component 1 laminates each other and forms a protective surface, the protective surface constitutes a confined cross section in the electric power piping lane, the confined cross section can be with preventing hot wall both sides piping lane space separation, the realization is prevented hot wall's fire and is separated the cigarette function. In these embodiments, pull formula fire prevention subassembly 1 is the prefab, can change corresponding pull formula fire prevention subassembly 1 according to the construction demand, and position, quantity, the size that prefabricated pull formula fire prevention subassembly 1 went up wire casing 13 has limited that the job site arranges cable 8 quantity, size, arrangement mode and position in advance. The positions, the number and the sizes of the wire grooves 13 on the prefabricated pull-out type fireproof component 1 include but are not limited to the following: the cross-sectional shape of the wire groove 13 is not specifically limited, and optionally includes polygons such as a triangle or a trapezoid, and other closed figures including curves; the size of the wire groove 13 is capable of accommodating cables 8 pre-arranged in a single wire groove 13, for example, the equilateral triangle wire groove 13 is used for penetrating the cables 8 with single diameter of 10cm, the side length of the triangle is not less than 18cm, the equilateral triangle wire groove 13 is used for penetrating the cables 8 with three diameters of 10cm, and the side length of the triangle is not less than 28 cm; the number of the wire grooves 13 is the same as the number of the groups of the cables 8 to be pre-threaded; the wire casing 13 is seted up in the bottom of prefabricated pull formula fire prevention subassembly 1, and single groove can adopt between two parties to set up, and the multislot can adopt the equidistance to set up, and what need explain that the groove interval is optional according to the difference of wearing to establish cable 8 in advance has 25cm, 35cm or 50 cm.

It can be understood that when the number, size, arrangement mode and position of the cables 8 are not changed or only the size of the cables 8 is changed, the pull-out type fireproof component 1 is used, it should be noted that a corresponding size adjusting mechanism can be arranged in the wire slot 13 of the pull-out type fireproof component 1, when the cables 8 are changed only in size, the wire slot 13 can be matched with a new cable 8 through the adjustment of the size adjusting mechanism, and the pull-out type fireproof component 1 does not need to be changed; when the quantity of cable 8, the mode of arranging and the position change, then need choose again corresponding prefabricated pull formula fire prevention subassembly 1, for example, the old cable 8 of single equidistance arranging needs to be changed into three equidistance new cables 8, and other and the condition are unchangeable, and the single cable 8 of wire casing 13 adaptation of original pull formula fire prevention subassembly 1 wears to establish three cables 8 when unable, then needs to be changed into the pull formula fire prevention subassembly 1 of seting up three cables 8 of wire casing 13 adaptation.

Specifically, when the cable is installed, the corresponding prefabricated pull-out type fireproof component 1 is selected according to the number, the size, the arrangement mode and the position of the cables 8; later with pull formula fire prevention subassembly 1 pile together in the selected cross section of electric power piping lane, wear to establish in pull formula fire prevention subassembly 1's wire casing 13 with cable 8 simultaneously, at last with the gap between fire prevention mud shutoff wire casing 13 and the cable 8, it is airtight to make whole fire wall body realize, constitute a sealed closed cross section, shape sets up a plurality of hot walls in the electric power piping lane, divide the electric power piping lane inside into multistage airtight space, can effectively avoid the conflagration to stretch, reduce the loss that the conflagration caused.

When the cable 8 needs to be replaced, the pull-out type fireproof component 1 above the position where the cable 8 needs to be replaced is detached, the new cable 8 is used for replacing the old cable 8, then the pull-out type fireproof component 1 above the position where the cable 8 needs to be replaced is installed back again, and finally the gap between the wire groove 13 and the cable 8 is sealed by fireproof mud, so that the whole fireproof wall body is sealed, and a sealed cross section is formed. Compared with the prior art, the holes do not need to be broken and torn open by the protection plates 11 on the two sides of the built fireproof wall surface or the two sides of the support frame 2, the construction efficiency is improved, the phenomenon that the fireproof wall cannot be repaired for a long time due to construction is avoided, the hidden danger of construction fire hazard is reduced, repeated breaking and tearing of the fireproof wall surface or the protection plates 11 are avoided, and the service life and the fireproof performance of the fireproof wall are improved.

Optionally, as shown in fig. 2 and 3, the edge of the protection plate 11 is provided with a first sealing strip 111 made of intumescent fire-retardant material.

Specifically, after hot wall is prevented in installation into to pull formula fire prevention subassembly 1, the border of adjacent pull formula protection component's guard plate 11 laminates each other, and the inflation that can be heated of first sealing strip 111 that intumescent fire prevention material made when the conflagration breaing out, further is sealed with the border of adjacent pull formula protection component's guard plate 11, has improved the validity that prevents hot wall fire prevention and separate the cigarette function.

As shown in fig. 6, the intelligent fabricated firewall for a power pipe gallery in an embodiment of the present invention further includes a supporting frame 2, the fireproof module 12 is placed and installed on a supporting plate 211 of the supporting frame 2, a sealing surface 112 is disposed on an inner end surface of the protecting plate 11, the sealing surface 112 covers the supporting frame 2, and a second sealing strip 113 made of an intumescent fireproof material is disposed between the sealing surface 112 and the supporting frame 2.

Specifically, the intelligent assembly type fire-proof wall of the power pipe gallery forms a closed cross section perpendicular to the trend of the pipe gallery in the power pipe gallery, the cable 8 passes through the fire-proof wall body to be laid along the trend of the pipe gallery, the supporting frame 2 is formed by laying refractory bricks or welding metal plates, a plurality of cylindrical accommodating spaces open along the trend of the pipe gallery are formed in the supporting frame 2, the size of the pull type fire-proof component 1 is the same as that of the cylindrical accommodating spaces, the pull type fire-proof component 1 can be pulled out along the trend of the pipe gallery from one side of the accommodating space open, namely along the direction of the cable 8, after the pull type fire-proof component 1 is pulled out, the displacement perpendicular to the laying direction of the cable 8, namely the radial direction of the cable 8 can be carried out in the accommodating space of the cable 8, the pull type fire-proof component 1 is inserted into the supporting frame 2 to form an effective closed cross section, and the spaces of the pipe galleries on two sides are separated, realize the effective fire prevention and smoke insulation.

Specifically, when the support frame 2 is installed, the support frame is firstly built or erected in a selected cross section in the power pipe gallery; then selecting a corresponding prefabricated pull-out type fireproof component 1 according to the number, the size, the arrangement mode and the position of the cables 8; pass the cable 8 in the column accommodation space after, then just insert corresponding installation space to the cable 8 of placing with the wire casing 13 of selected pull formula fire prevention subassembly 1, at last with the gap between fire prevention mud shutoff wire casing 13 and the cable 8, it is airtight to make whole fire wall body realize, constitute a sealed closed cross-section, shape sets up a plurality of hot walls in the electric power piping lane, divide the inside multistage airtight space that divides of electric power piping lane, can effectively avoid the conflagration to stretch, reduce the loss that the conflagration caused.

When the cable 8 needs to be replaced, the pull-out type fireproof component 1 at the position where the cable 8 needs to be replaced is firstly pulled out from the accommodating space, then the old cable 8 is taken out from one side of the accommodating space, the new cable 8 passes through the accommodating space, finally the wire groove 13 of the selected pull-out type fireproof component 1 is inserted into the corresponding installation space just opposite to the placed cable 8, and finally the gap between the wire groove 13 and the cable 8 is sealed by fireproof mud, so that the whole fireproof wall body is sealed, and a sealed cross section is formed. Compared with the prior art, the replacement of the cable 8 can be completed only by detaching the pull-out type fireproof component 1 in the accommodating space where the cable 8 to be replaced is located in the replacement process, the protective plates 11 on the two sides of the built fireproof wall surface or the supporting frame 2 do not need to be broken and opened, repeated breaking and opening of the fireproof wall surface or the protective plates 11 are avoided, and the service life and the fireproof performance of the fireproof wall are improved; when only needing to change and prevent hot wall when being close to the cable 8 of ground position, only need will be close to ground and just corresponding pull formula fire prevention subassembly 1 is whole to be taken out and can accomplish the change of cable 8, need not to take out whole back-fire relief package or fire prevention module 12, has saved construction strength, has improved the efficiency of construction, avoids leading to preventing the long-time unable restoration of hot wall because of the construction, reduces the hidden danger that the construction conflagration takes place.

Further, the outer fringe of guard plate 11 is greater than installation space's entry, when pull formula fire prevention unit 1 inserted installation space, fire prevention module 12 can stretch into installation space, sealed face 112 and the laminating of braced frame 2 until guard plate 11, its sealed face is provided with second sealing strip 113 with braced frame 2, second sealing strip 113 adopts expansibility fire-proof material to make, when the conflagration takes place, second sealing strip 113 is heated the gap that the inflation will be anti-backplate and braced frame 2 pasted fast and is sealed, the guard plate 11 of a plurality of protection units laminates the protective surface that forms each other and further seals, and then ensure to prevent that hot wall forms a confined cross section, the validity of preventing hot wall fire and isolating smoke function has been ensured.

Alternatively, in some embodiments of the invention that include a support frame, as shown in FIG. 11, the support plate 211 includes an upper end plate 2111 and a lower end plate 2112, with a fire-blocking interlayer 2113 of intumescent fire-blocking material disposed between the upper end plate 2111 and the lower end plate 2112.

Specifically, in actual construction, the supporting plate 211 has a certain thickness, the supporting plate 211 is a solid plate, the supporting plate 211 is usually made of a metal material with high rigidity, on one hand, the metal has good heat conductivity, and the solid metal is adopted to easily transfer heat of a fire on one side of the firewall to the other side of the firewall, so that the fireproof performance of the firewall is directly influenced; on the other hand, solid metal weight is great, and the great backup pad 211 of weight is installed inconveniently, easily takes place the lateral buckling simultaneously, influences the smooth and easy degree of pull operation of pull formula fire prevention subassembly 1. Therefore, by adopting the laminated plate structure, the upper end plate 2112 and the lower end plate 2112 are made of metal materials and have enough rigidity for the supporting plate 211, and the middle part is filled with the fireproof interlayer 2113, so that on one hand, a large amount of heat is prevented from being transferred from one side of a fire of a firewall to the other side through the supporting plate 211, and the fireproof performance of the firewall is improved; on the other hand, lightened the weight of backup pad 211, the installation of being convenient for avoids backup pad 211 lateral bend simultaneously, ensures that pull formula fire prevention subassembly 1 pull is smooth and easy.

Optionally, the protection plate 11 and the support frame 2 are correspondingly provided with a connection hole, and the protection plate 11 and the support frame 2 are fixedly connected by passing through the connection hole through a bolt.

Specifically, after the pull-out type protection assembly is installed in the corresponding installation space on the support frame 2, the protection plate 11 of the pull-out type protection assembly is fixedly connected with the support frame 2 through bolts, and the second sealing strip 113 is compressed, so that the pull-out type protection assembly and the support frame 2 are effectively sealed, and the effectiveness of the fireproof and smoke-isolating functions of a firewall is ensured; when the conflagration is relieved, the setting of bolt-up between guard plate 11 and the braced frame 2 has avoided second sealing strip 113 to be heated and has expanded and make and produce the gap between guard plate 11 and the braced frame 2, prevents the sealed inefficacy between guard plate 11 and the braced frame 2, has further ensured the validity of preventing that the fire prevents to separate the cigarette function.

It should be noted that the fixed connection between the protection plate 11 and the support frame 2 includes, but is not limited to, the bolt fastening method described above, and other fastening methods for facilitating disassembly.

As shown in fig. 7 and 10, the invention provides another intelligent fabricated fire wall for an electric power pipe gallery, further comprising a fire door 3, wherein the fire door 3 comprises upright posts 31 and a fire door body 32, the fire door body 32 is arranged between the upright posts 31, a door opening for installing the fire door is arranged on a support frame 2, a plurality of horizontally arranged support plates 211 are arranged at intervals on two sides of the door opening, a first end of each support plate 211 is fixedly connected with the support frame 2, and a second end of each support plate 211 is detachably connected with the upright post 31.

Specifically, be provided with the door opening that is used for installing fire door on braced frame 2, two stands 31 set up respectively in the both sides of door opening, stand 31 and braced frame 2 detachably fixed connection, braced frame 2, backup pad 211 and stand 31 inject a plurality of sizes the same cuboid installation space that is used for holding pull formula fire prevention subassembly 1 jointly, pull formula fire prevention subassembly 1 along the drawable placing in accommodation space of perpendicular to firewall's direction. The invention does not specifically limit the opening direction and structure of the fireproof door, including but not limited to, a side-turning open type structure and an upturning open type structure.

Specifically, backup pad 211 and perpendicular and curb plate form the structure of cantilever beam, can set up the strengthening rib between backup pad 211 and corresponding curb plate when necessary, improve the joint strength between backup pad 211 and the curb plate, avoid backup pad 211 to take place the lateral buckling, and then ensure that pull formula fire prevention subassembly 1 pull is smooth and easy, technical personnel in the art can understand, backup pad 211 second end and stand 31 can dismantle the mode of being connected and include but not only be limited to bolted connection, buckle connection and hinged joint etc. stand 31 and backup pad 211 second end are connected the back, both relative position are fixed unchangeable, backup pad 211 second end becomes the free end after the dismantlement.

When the support frame 2 is installed, the support frame 2 is firstly erected in the selected cross section in the power pipe gallery, and the support frame 2 can be fixedly connected with the ground and the wall of the power pipe gallery by adopting the modes of threaded connection such as welding and the like; then selecting a corresponding prefabricated pull-out type fireproof component 1 according to the number, the size, the arrangement mode and the position of the cables 8; then, the cable 8 passes through the door opening, the lifting cable 8 is placed on the supporting frame 2, and the position where the cable 8 is placed is consistent with the position where the wire casing 13 is located after the pull-type fireproof component 1 is placed in the supporting frame 2; then the fireproof door is arranged in a door opening formed in the supporting frame 2 in the sequence of firstly arranging the upright post 31 and then arranging the fireproof door body 32, and the supporting frame 2 and the fireproof door upright post 31 jointly define an installation space with the matched size of the pull-type fireproof assembly 1; and then inserting the selected wire slot 13 of the pull-out type fireproof component 1 into the corresponding installation space opposite to the placed cable 8, and finally sealing the gap between the wire slot 13 and the cable 8 by using fireproof mud to seal the whole fireproof wall body. Further, prevent that fire door and firewall body constitute a sealed cross section jointly, shape sets up a plurality of hot walls that prevent in the electric power piping lane, divides the inside multistage airtight space that divides into of electric power piping lane, can effectively avoid the conflagration to spread, reduces the loss that the conflagration caused.

When the cable 8 needs to be replaced, the pull-out type fireproof assembly 1 at the position where the cable 8 needs to be replaced is taken out from the corresponding installation space, the fireproof door body 32 and the upright post 31 are detached from the door opening, the old cable 8 is taken out from one side of the door opening, the new cable 8 penetrates through the door opening and is placed at the corresponding position again, the fireproof door body and the upright post 31 are installed in the door opening again, and finally the pull-out type fireproof assembly 1 is inserted back into the corresponding installation space. Compared with the prior art, the replacement of the cable 8 can be completed only by disassembling the fireproof door body 32, the upright column 31 and the pull-out type fireproof assembly 1 at the corresponding position in the replacement process, holes do not need to be formed in the protection plates 11 at the two sides of the fireproof wall body, repeated breaking and disassembling of the protection plates 11 of the fireproof wall body is avoided, and the service life and the fireproof performance of the fireproof wall body are improved; when only needing to change and prevent hot wall 8 that is close to the ground position, only need will be close to ground and just corresponding pull formula fire prevention subassembly 1 is whole to be taken out and to accomplish the change of cable 8, need not to take out whole fire prevention material, has saved construction strength, has improved the efficiency of construction, avoids leading to preventing the long-time unable restoration of hot wall because of the construction, reduces the hidden danger that the construction conflagration takes place.

Optionally, as shown in fig. 9, the second ends of the adjacent supporting frames 2 and the supporting plates 211 and the second ends of the adjacent two supporting plates 211 are detachably provided with auxiliary supporting 4 pillars, and the auxiliary supporting 4 pillars support or suspend the second ends of the supporting plates 211.

Specifically, the auxiliary support 4 column is a rigid column 31, a first auxiliary support 4 column, a second auxiliary support 4 column, a third auxiliary support 4 column … … and an Nth auxiliary support 4 column are sequentially arranged on one side of the door opening from top to bottom, the column 31 of the fireproof door is arranged on the outer side of the auxiliary support 4, when the cable 8 laid on the inner side of the third auxiliary support 4 column needs to be replaced, the fireproof door body 32 and the upright column 31 are firstly detached from the door opening, then the third auxiliary support 4 column is detached, at the moment, the first auxiliary support 4 column and the second auxiliary support 4 column above are stretched to play a role in suspension, the fourth auxiliary support 4 column … … and the Nth auxiliary support 4 column below are extruded to play a role in support, after the third auxiliary support 4 column is detached, the supporting plate 211 cannot be laterally bent under the action of gravity, the accommodating space is not deformed, and the drawing type bearing assembly is ensured to be smoothly drawn in the accommodating space.

It should be noted that, the setting for avoiding the lateral bending of the second end of the supporting plate 211 includes, but is not limited to, the above-mentioned 4 pillars of auxiliary support, and also includes the setting for limiting the displacement of the second end of the supporting plate 211 by other settings of the skilled person, for example, the rigid suspension column is adopted to avoid the lateral bending of the second end of the supporting plate due to gravity, after the pillar 31 of the fire door is detached, the first end of the suspension column is fixedly connected with the top beam, the second end of the suspension column is fixedly connected with the second end of the supporting plate 211 above the fire-proof component to be pulled, the suspension column is tensioned, the deformation of the accommodating space is ensured, and the smooth pulling of the pull-type bearing component in the accommodating space is ensured.

Furthermore, after the pull-out fire-proof component 1 is completely installed into the corresponding installation space, the protection plates 11 of the adjacent pull-out fire-proof components 1 are attached together to form an effective protection surface for providing effective protection for the fire-proof modules 12 in the installation space.

Optionally, as shown in fig. 8, two sides of the supporting frame 2 are respectively inserted with one pull-out fire protection assembly 1, and the wire grooves 13 for accommodating the cables 8 on the two pull-out fire protection assemblies 1 after installation are communicated to form a channel for the cables 8 to pass through.

Specifically, a plurality of pull formula fire prevention subassemblies 1 are inserted to braced frame 2's first side, the outer fringe laminating of a plurality of pull formula fire prevention subassemblies 1's guard plate 11 forms first protective surface together, braced frame 2's second side is inserted and is established a plurality of pull formula fire prevention subassemblies 1, the outer fringe laminating of a plurality of pull formula fire prevention subassemblies 1's guard plate 11 forms the second protective surface together, braced frame 2 and fire prevention module 12 are pressed from both sides in the middle to first protective surface and second protective surface, provide further effective protection for fire prevention module 12 in the installation space.

Optionally, as shown in fig. 8, a partition component 5 is further disposed between the pull-out fire protection components 1 respectively inserted from two sides in the same cylindrical accommodation space, and when the thickness of the partition component 5 is large, the length and obviously the thickness of the pull-out fire protection components 1 on two sides of the partition component are smaller than the thickness of the fire protection wall body.

Specifically, above-mentioned wall subassembly 5 is the fixed riser that sets up on accommodation space middle cross-section, after two pull formula fire prevention subassemblies 1 installation target in place, the trailing flank of two pull formula fire prevention subassemblies 1 supports the top on the riser, avoided pull formula fire prevention subassembly 1 and accommodation space's gap direct intercommunication, after the conflagration takes place, before fire prevention module 12 does not expand fully, avoid the flue gas to pass from pull formula fire prevention subassembly 1 and accommodation space's gap and prevent hot wall, further ensure to prevent hot wall fire prevention and separate the validity of cigarette function.

Optionally, all or part of the side surface of the pull-out fire protection assembly 1 in the various embodiments of the present invention should expose the fire protection module between its two end surfaces. Referring to fig. 9, in one design, a side panel is disposed on a lower side of the pull-out fire protection assembly, and the other sides are opened to expose the internal fire protection module, the side panel is integrally formed with or fixedly connected to the protection plate 11, and the fire protection module is fixed to the side panel to be fixedly connected to the protection plate 11. In this design, the inflation direction of these fire prevention modules includes top and left and right sides except that the side board of putting the side down, when the side board of putting the side down had hollow out construction, the fire prevention module also can expand downwards. In the embodiments, the fireproof module is directly formed by pouring fireproof silica gel and other materials on the side panel of the lower side surface.

Optionally, as shown in fig. 11, in some embodiments, the pull-out fire protection assembly 1 is further designed with a matching fixture, the fixture is disposed in the wire groove 13, and the cable 8 is fixedly clamped by the fixture 6.

Specifically, the clamping device 6 comprises a clamping piece 61, the clamping piece 61 is provided with a plate-shaped structure protruding in a bending mode, the upper end face, away from the cable 8, of the clamping piece 61 is matched with the wire groove 13, on one hand, the wire groove 13 of the pull-out type fireproof assembly 1 is equivalent to a sliding groove, the plate-shaped structure protruding in a bending mode of the clamping piece 61 is equivalent to a guide rail, and the wire groove 13 of the pull-out type fireproof assembly 1 is lapped on the upper end face of the clamping piece 61, so that the smoothness of the pulling operation of the pull-out type fireproof assembly 1 is improved; on the other hand, avoided wire casing 13 and the cable 8 direct contact of pull formula fire prevention subassembly 1 bottom, prevented that pull operation process from damaging the insulating crust of cable 8, influence the life of cable 8.

Further, fixture 6 includes the piece 62 that supports that corresponds with fastener 61, and radial ascending rocking takes place for cable 8, easily leads to the fire prevention mud in shutoff wire casing 13 and the 8 clearances of cable to split and drop, and then leads to preventing the airtight inefficacy of hot wall, influences the fire behavior who prevents hot wall. When in use, the cable 8 is placed in the clamping piece 61, then the clamping piece 61 is fixedly connected with the supporting plate 211, and finally the abutting block 62 abuts upwards to abut against the cable 8 until the inner surface of the clamping piece 61 is abutted; through supporting the cable 8 that the piece 62 and the cooperation of fastener 61 were worn to establish in pressing from both sides tight wire casing 13, effectively avoid cable 8 to take place radial ascending rocking, improved the fire behavior and the life who prevent hot wall.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solution of the present invention, but not for limiting the same, and some of the embodiments that are not related to the parts may be understood and implemented by referring to other embodiments; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides a power pipe gallery intelligence assembled prevents hot wall, includes that the confined is formed with in preventing hot wall body outside and with the protection face of the basic quadrature of piping lane direction, its characterized in that: the pull-out type fireproof component is integrally designed into a column shape so as to be filled on the fireproof wall body along the pipe gallery direction; at least one end face of the pull-type fireproof assembly is designed to be a protection plate, and after the pull-type fireproof assembly is filled into the fireproof wall body, at least one part of the protection surface consists of the protection plate; the fireproof module arranged on the inner side of the pull-type fireproof assembly is fixedly connected with the protection plate.

2. The fabricated firewall according to claim 1, wherein: the length of the pull-type fireproof component is equal to the thickness of the fireproof wall body, and two end faces of the pull-type fireproof component are both designed into the fireproof plate.

3. The fabricated firewall according to claim 1, wherein: the length of the pull-type fireproof component is smaller than the thickness of the fireproof wall body, and the end face, exposed outside the fireproof wall body, of the pull-type fireproof component is designed to be the fireproof plate.

4. The fabricated firewall according to claim 1, wherein: after the pull-type fireproof assembly is filled into the fireproof wall body, a first sealing strip formed by an expansion type fireproof material is arranged between the edge of the protection plate of the pull-type fireproof assembly and the adjacent protection surface.

5. The fabricated firewall according to claim 1, wherein: the pull-type fireproof component comprises a first fireproof component, and at least one side face of the first fireproof component is provided with a wire groove penetrating through two end faces of the first fireproof component.

6. The fabricated firewall according to claim 1, wherein: the support frame is arranged on the section of the pipe gallery; the drawing type fireproof component comprises a second fireproof component; the second fireproof assembly is filled on the supporting plate of the supporting frame, the protective plate of the second fireproof assembly comprises a convex edge which protrudes outwards from the side surface of the second fireproof assembly, and the inner side surface of the convex edge is designed to be a sealing surface; and a second sealing strip formed by an expansion type fireproof material is arranged between the sealing surface and the outer end surface covered by the sealing surface.

7. The fabricated firewall according to claim 6, comprising one or more of the following:

   , the supporting plate comprises an upper end plate and a lower end plate, and a fireproof interlayer made of intumescent fireproof material is arranged between the upper end plate and the lower end plate;

   , connecting holes are correspondingly formed in the protection plate and the support frame, and the protection plate and the support frame are fixedly connected by penetrating through the connecting holes through bolts;

   , the supporting frame further comprises a fireproof door, the fireproof door comprises a fireproof door body and upright posts arranged at two sides of the fireproof door body; the upright post is detachably connected with the free end of the supporting plate on the same side of the supporting frame;

   , a detachable auxiliary supporting column is arranged between two adjacent supporting plates, and the auxiliary supporting column is used for suspending the supporting plate below the auxiliary supporting column from the supporting plate above the auxiliary supporting column and/or supporting the supporting plate above the auxiliary supporting column from the supporting plate below the auxiliary supporting column;

   , a clamp used for fixing and clamping the cable is further arranged on the supporting plate; the clamping device comprises a clamping piece located on one side of the pull-type fireproof assembly and an abutting block located on one side of the supporting plate.

8. The fabricated firewall according to claim 3, wherein: the two pull-type fireproof components which are inserted from two ends are arranged in pairs at the same position of the fireproof wall body in a penetrating manner; the length sum of the two pull-type fireproof components is less than or equal to the thickness of the fireproof wall body.

9. The fabricated firewall according to claim 8, wherein: the same side of the two drawing type fireproof components arranged in pairs is provided with a wire groove penetrating through the two end faces of the drawing type fireproof components, so that a channel for a cable to pass through is formed after the drawing type fireproof components are filled at the same position.

10. The fabricated firewall according to claim 9, wherein: and a partition component is also arranged between the two pull-type fireproof components which are arranged in pair, and protrudes towards the inner side of the channel so as to block a gap between the pull-type fireproof components penetrating through the channel and the cable.

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