CN111321817B - Application method of internal spray type fireproof plate type node structure - Google Patents

Application method of internal spray type fireproof plate type node structure Download PDF

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Publication number
CN111321817B
CN111321817B CN202010300698.4A CN202010300698A CN111321817B CN 111321817 B CN111321817 B CN 111321817B CN 202010300698 A CN202010300698 A CN 202010300698A CN 111321817 B CN111321817 B CN 111321817B
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node
disc
pipe
chamfer
water
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CN111321817A (en
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尹亮
阚强
韩伟平
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Tianjin Fire Research Institute of MEM
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Tianjin Fire Research Institute of MEM
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers
    • E04B1/94—Protection against other undesired influences or dangers against fire
    • E04B1/941—Building elements specially adapted therefor
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/02—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires
    • A62C3/0214—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires for buildings or installations in fire storms
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/005—Delivery of fire-extinguishing material using nozzles
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/02—Nozzles specially adapted for fire-extinguishing
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional [3D] framework structures
    • E04B1/1903—Connecting nodes specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers
    • E04B1/94—Protection against other undesired influences or dangers against fire
    • E04B1/941—Building elements specially adapted therefor
    • E04B1/943—Building elements specially adapted therefor elongated
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional [3D] framework structures
    • E04B2001/1957—Details of connections between nodes and struts
    • E04B2001/1963—Screw connections with axis at an angle, e.g. perpendicular, to the main axis of the strut
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers
    • E04B1/94—Protection against other undesired influences or dangers against fire
    • E04B2001/949—Construction elements filled with liquid, e.g. water, either permanently or only in case of fire

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  • Architecture (AREA)
  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Physics & Mathematics (AREA)
  • Emergency Management (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Forests & Forestry (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Nozzles (AREA)

Abstract

The invention relates to a use method of an internal spray type fireproof plate type node structure, which is used for judging that a fire disaster occurs; a pressurized water supply system is started for a water supply pipe, water mist is sprayed out from a nozzle I connected with a node disc short pipe I, and a hollow node area formed by six chamfer I-shaped beams, an upper node disc and a lower node disc is filled with the water mist; meanwhile, water mist is sprayed out from a nozzle I connected with six I-shaped beams Liang Wanguan I, and the surfaces of rectangular webs within the half length range of the six chamfer I-shaped beams and the inner surfaces of chamfer upper flanges and chamfer lower flanges connected with the rectangular webs are covered with the water mist; continuing to spray, wrapping the whole plate-type node by water mist, so that the purposes of heat insulation and temperature reduction and aluminum alloy component temperature inhibition are realized; and judging that the fire is extinguished, and ensuring that the aluminum alloy component is cooled to room temperature to close the water supply system. The invention provides a reference for the fireproof protection design of the newly-built aluminum alloy net shell structural member and the fireproof modification and revision of related standards during reconstruction and expansion, and is beneficial to improving the safety development level of the space structure in China.

Description

Application method of internal spray type fireproof plate type node structure
Technical Field
The invention relates to the field of building structure fireproof, in particular to a use method of an inner spray type fireproof plate type node structure, which is developed aiming at a novel metal building structure of an aluminum alloy net shell, and is a use method of the inner spray type fireproof plate type node structure which is integrated with a structure of a plate type node inner spray wrapping structure and fireproof protection under fire and a use method after the fire occurs.
Background
In public buildings (stadiums, exhibitions, theatres and plant gardens), in order to pursue the expression of metal texture appearance and the aesthetic feeling of dense triangular meshes of indoor ceilings, architects increasingly select aluminum alloy net shells with various shapes as roof bearing structures, such as Nanjing cattle head mountain Buddha top palace, chengdu worry five sports event centers and the like.
For the aluminum alloy net shell node structure which is currently used in a large amount, the application number is as follows: cn20161045175. X describes the connection relationship between components. The corrosion resistance is good, the later maintenance cost is low and is always an element for selecting an aluminum alloy structure, but the poorer fire resistance compared with a steel structure is also an obstacle for popularizing the aluminum alloy structure.
The fireproof paint is sprayed on the surface of the aluminum alloy component (application number: CN 201710501406.1), which affects the metal texture, and no mature paint product for protecting the aluminum alloy component is currently applied on the market, and electrochemical corrosion is possible to be generated by the fireproof paint for spraying the steel structure.
The application number is as follows: the technology proposed by CN201720334290.2 is at least messy under the ceiling, and the original purpose of building design is overcome, and the basic building aesthetic requirement is not met.
Therefore, it is needed to provide an integrated fireproof plate type node structure which does not damage the metal texture of the aluminum alloy structure, does not damage the aesthetic feeling of the building ceiling of the aluminum alloy net shell structure, is suitable for the curved surface modeling of the net shell structure, and comprises (the net shell is spherical, arched or free curved, the grid adopts an equilateral or non-equilateral triangle, the node plate is no longer a flat plate, and the rod piece is no longer a uniformly distributed 60-degree included angle), so as to achieve the purpose of compensating the relatively poor fireproof performance of the aluminum alloy (net shell) structure. Clearly water protection techniques are suitable, especially mist protection techniques are more economical and efficient to achieve, which will necessarily involve the spray head, a product that atomizes water.
The general technical profile of the current technology is as follows:
(1) Spray head product and construction for fire suppression: such sprinklers are widely available, but are not the same as the present invention because "passive fire protection of building structures cannot be replaced by fire suppression" is a well-defined matter and industry consensus. Special examples are: application number: CN201810466046.0 discloses a device for realizing rotary fire extinguishing and improving fire extinguishing efficiency by utilizing recoil force of water jet through a spray nozzle cylinder body with an inclined hole, and the similar technology has application number: CN201320099018.2; application number: cn20161045175. X discloses a shear-ability-enhanced plate node construction that relies on lower node disc openings to mount fire control and extinguishing sprinklers.
(2) Spray head device for dust removal: application number: CN201710962239.0 discloses a device for further atomizing atomized water droplets into finer particles for mixing with flue gas by means of wind.
(3) Spray head device for cooling industrial products: application number: CN201822024334.9 discloses a device for cooling high-temperature castings by arranging a plurality of existing spray heads, in order to achieve uniform cooling, the high-temperature castings rotate in the device; application number: CN201120451865.1 discloses a device for cooling steel pipes from different angles outside the steel pipe, especially for steel pipes with thicker wall thickness, which can be cooled uniformly without generating cracks and poor mechanical properties. It can be seen that: the problem addressed by such techniques is that unlike the present invention, there is no specific reference technique.
(4) Spray head device for thermal insulation: application number: CN201320499669.0 discloses a spray head device for protecting vertical components such as glass curtain wall by using water mist, which is characterized in that a spray head is arranged at the outer side of the component, and sprays water to the surface of the component exposed to a fire scene; application number: CN201720334290.2 discloses a technology for blocking high-temperature flue gas from impacting an aluminum alloy (arched) roof by means of forming a conical outer water jet curtain by impacting the inner surface of a conical guide plate with a high-pressure water impact opening towards the roof by fixing a pipeline below the aluminum alloy roof. Obviously, the technology ignores that aluminum alloy roofs in the current public buildings are all application numbers: the current situation of the triangular hollowed-out plate-type node latticed shell structure in the middle of the grid described in CN20161045175. X only emphasizes the installation below a roof, but does not emphasize which part of aluminum alloy components to protect, which is lack of pertinence, and if the aluminum alloy components are applied, the extremely expensive cost is not saved; the design of the fire protection attached to the surface of the aluminum alloy structure, wherein the spray head is connected with the tail end of the connecting pipe extending out of the roof, destroys the aesthetic feeling of the regular aluminum alloy structure of the ceiling, shields the metal texture of the aluminum alloy structure, and has the same defects as fire-proof paint; meanwhile, the spray head scheme is that water resources are wasted, the aluminum alloy structure cannot contact water in the formed conical water curtain, the protection radius of the conical water curtain which can extend outwards is limited, water is scattered finally, and particularly, the aluminum alloy net shell structure with the beam height in the range of 250-550 mm in the current engineering cannot protect the surface of a large-area component (a web and the inner side surfaces of upper flanges and lower flanges connected with the web).
(5) Spray head with cooling and heat insulation functions: application number: CN201010298507.1 in order to solve the problem that the water smoke shower nozzle can not autogiration, fog droplet particle diameter is big, water consumption is many, spray inhomogeneous, provides one kind on the disc face of installation nozzle, relies on the nozzle to have certain plane contained angle with the terminal of radius to the water jet provides the shower nozzle device of rotational force to the tangential component of disc, realizes that water mist 360 evenly sprays, satisfies building ventilation shaft, safe evacuation passageway, the object surface that the radar detected and infrared detection unanimous demand. When the spray head is applied to the problems to be solved, the problems that the aluminum alloy structure of the ceiling cannot be effectively protected by the fine water mist which is uniformly distributed downwards, the spray head and a pipeline which is not described are arranged at the position, the aesthetic feeling and the metal texture of a regular grid of the ceiling of the aluminum alloy structure are not influenced, the special grid configuration of the aluminum alloy structure does not need rotary spraying, and then tangential momentum is wasted, and the like exist.
(6) Other related devices and configurations: application number: CN201720333657.9 discloses an aluminum alloy structural roof with a hollow tubular structure, wherein water circulates in the hollow tubular member and the node member to perform fireproof cooling. Application number: the cn20161045175. X introduces that the most commonly used aluminum alloy net shell beam member in the current engineering is an extruded solid i-shaped section beam, and is bolted with an upper node plate and a lower node plate, and a rectangular section hollow aluminum beam member (hollow tubular structure) which is locally and slightly adopted in the current engineering is also bolted between the upper node plate and the lower node plate, i.e. the node domain is a hollow domain, so that the current engineering can not form a water circulation condition even if a 'silica gel sealing ring' is adopted. Importantly, the aluminum alloy structure has the outstanding characteristics of light weight and 1/3 of the material density of a steel structure, the height of a beam rod piece in the current engineering is 175-550 mm, and if water circulates in the rod piece with the same equivalent section, the additional weight increase accelerates the collapse of the roof structure under fire, so that the design and practice are not feasible; application number: CN201810201918.0 discloses a water tank device arranged on a steel structure, and the sprinkler head connected to a sprinkler pipe is regulated by a transmission mechanism to uniformly sprinkle water to the steel structure under fire so as to protect the safety of the structure under fire; application number: CN201620117689.0 discloses a tank spray-washing structure with four nozzles in a plane by means of in-plane water spray boosting rotation.
Summarizing the above prior art, it can be found that:
(1) The technology and the product structure for fireproof protection simultaneously meet the demands of aluminum alloy metal texture appearance, dense triangular grid aesthetic feeling of indoor net shell structure ceilings and curved surface modeling of net shell structures (spherical, arched or free curved surface type net shells, equilateral or non-equilateral triangles are adopted as the grid) are not available.
(2) The prior art capable of solving part of problems does not have the pertinence of the requirements, so the feasibility is poor, and the method belongs to hard application.
(3) The design purpose of selecting an aluminum alloy reticulated shell structure roof for public buildings and the safety combination under the fire disaster of a protection structure can not be realized by utilizing the spray head products and the devices developed for solving other problems.
Disclosure of Invention
In view of the state of the art and the defects existing in the prior art, the invention provides a use method of an internal spray type fireproof plate type node structure, which is an integrated fireproof plate type node structure which meets the current engineering requirements and is designed by building an aluminum alloy net shell structure roof and depends on a water spray mist protection structure in a plate type node under fire and a use method after the fire occurs.
The invention overcomes the defect that the prior art cannot meet the requirements of obtaining the dense triangular grid aesthetic feeling of the ceiling with the aluminum alloy metal texture and the indoor inner net shell structure and adapting to the curved surface modeling of the net shell structure in public buildings.
The invention can meet the requirements of architects on the metal texture appearance pursuit of aluminum alloy, does not influence the regular appearance of the triangular grid of the indoor ceiling, and simultaneously provides an integrated inner spray fire-proof plate type node structure. The solution is simply not an accumulation of technical details of prior art solutions. The structure of the built-in composite spray head enables the hollow node domain and the branch-shaped beam members extending in all directions to simultaneously obtain reliable cooling protection, and can adapt to the change of the curved surface modeling of the latticed shell structure, such as: the upper and lower node plates used in the free-form surface net shell slightly arch; the optimization of the grid stress or the difference of the included angles between adjacent beam members extending in all directions caused by the transition of the grid to the support position, and the like. When the spray head is used at a net shell support with a landing boundary, for saving, even only 1/2 of the spray head body can be manufactured, namely only 4I-shaped Liang Wanguan and 4 nozzles are reserved for carrying out fireproof protection on half-plate type nodes at the support (the support is usually clamped and bolted with a plate type node structure of four chamfer I-shaped beams by using an upper half-node plate and a lower half-node plate and is bolted with a steel support at the same time). No trace of the fire protection product is noted at all from the view of the lower flange or lower gusset of the beam (i-section beam, hollow box section beam) towards the personnel in the room. The invention provides a brand-new application method of an integrated fireproof plate type node structure with hidden inner spray protection.
The integrated internal spray type fireproof plate type node structure obtained by the technical scheme and the cylindrical surface, spherical surface and free curved surface net shell structure comprising the fireproof plate type node realize the regular requirements of buildings on metal texture and grid impression, simultaneously conform to the corrosion-resistant material characteristics of an aluminum alloy structure, realize dead angle-free fireproof protection of the net shell structure while using less water by means of a water mist technology, and have obvious social, economic and safety benefits. The invention provides a reference for the revision of related fireproof standards, the breaking of fireproof barriers in the process of popularizing the aluminum alloy net shell structure and the improvement of structural fireproof in the current aluminum alloy engineering.
The invention adopts the technical proposal for realizing the aim that: the application method of the inner spray type fireproof plate type node structure comprises plate type nodes and a water supply pipe, wherein the plate type nodes comprise node plates, bolts and chamfer I-shaped beams; the node discs comprise an upper node disc and a lower node disc;
The chamfer end interval of six chamfer I-beam sets up between last node dish and lower node dish, and the chamfer top flange of six chamfer I-beams is in the same place through several bolt fastening with last node dish, and the chamfer bottom flange of six chamfer I-beams is in the same place through several bolt fastening with lower node dish, and six chamfer I-beam other ends stretch out outside node dish and the lower node dish, its characterized in that: the device also comprises a composite spray head I;
the composite spray head I comprises a spray head body I, a spray nozzle I, a node disc short pipe I and an I-shaped Liang Wanguan I;
The I-shaped Liang Wanguan I is formed by sequentially connecting a straight pipe AI, a bent pipe A and a straight pipe AII;
the spray head body I is formed by sequentially centering and welding an upper disc I, a hollow column pipe I, a hollow inverted cone pipe I and a lower disc I;
Six beam outlets Shui Kong on the wall of the hollow column pipe I are respectively connected with the straight pipe AII ends of an I-shaped Liang Wanguan I, the straight pipe AII ends of six I-shaped Liang Wanguan I are respectively arranged in a downward inclined and outward extending mode through an elbow pipe A, and the six straight pipes AII are respectively connected with a nozzle I;
the node disc water outlet hole I of the lower disc I is connected with a nozzle I through a node disc short pipe I;
The water inlet I of the upper disc I is connected with the bent end of the water supply pipe, the straight pipe section of the water supply pipe is fixed at the included angle between the upper flange of a chamfering I-beam of the plate type node and the rectangular web, and the nozzle body I is vertically positioned on the central connection line of the upper node disc and the lower node disc and is close to the upper node disc; six I-shaped Liang Wanguan I are sequentially positioned on the vertical middle plane between the webs of two chamfer I-shaped Liang Juxing adjacent to the plate-type node;
the six nozzles I are positioned at the circumferential positions of the upper node disc and the lower node disc;
The application method of the internal spray type fireproof plate type node structure comprises the following steps:
Firstly, judging that fire disaster occurs;
secondly, starting a pressurized water supply system for a water supply pipe, spraying water mist from a nozzle I connected with a node disc short pipe I, and filling water mist into a hollow node area formed by six chamfer I-shaped beams, an upper node disc and a lower node disc; meanwhile, water mist is sprayed out from a nozzle I connected with six I-shaped beams Liang Wanguan I, and the surfaces of rectangular webs within the half length range of the six chamfer I-shaped beams and the inner surfaces of chamfer upper flanges and chamfer lower flanges connected with the rectangular webs are covered with the water mist; the spraying is continued, and the whole plate-type node can be wrapped by the water mist overflowed in a short time, so that the purposes of heat insulation and temperature reduction and aluminum alloy component temperature inhibition are realized;
Thirdly, judging that the fire is extinguished, and continuously providing pressurized water for the water supply pipe for 5-10 min to ensure that the aluminum alloy component is cooled to room temperature;
and fourthly, closing the water supply system.
The application method of the inner spray type fireproof plate type node structure comprises plate type nodes and a water supply pipe, wherein the plate type nodes comprise node plates, bolts and chamfer I-shaped beams;
the node discs comprise an upper node disc and a lower node disc;
The chamfering ends of the six chamfering I-beams are arranged between the upper node plate and the lower node plate at intervals, the chamfering upper flanges of the six chamfering I-beams are fixed together with the upper node plate through a plurality of bolts, the chamfering lower flanges of the six chamfering I-beams are fixed together with the lower node plate through a plurality of bolts, and the other ends of the six chamfering I-beams extend out of the upper node plate and the lower node plate;
The method is characterized in that: the device also comprises a composite spray head II;
The composite spray head II comprises a spray head body II, a spray nozzle II, a node short disc pipe II and an I-shaped Liang Wanguan II;
The I-shaped Liang Wanguan II is formed by sequentially connecting a straight pipe BI, a bent pipe B and a straight pipe BII;
the spray head body II is formed by sequentially centering and welding an upper disc II, a hollow column tube II, a hollow inverted cone tube II and a lower disc II;
six beam water outlet holes II on the conical surface of the hollow inverted conical tube II are respectively connected with the straight tube BII ends of one I-shaped Liang Wanguan II, the straight tube BII ends of six I-shaped Liang Wanguan II are respectively and horizontally arranged outwards through the bent tube B, and the six straight tube BII are respectively connected with a nozzle II;
the lower disc II node disc water outlet hole II is connected with a nozzle II through a node disc short pipe II;
The water inlet II of the upper disc II is connected with the bent end of the water supply pipe, the straight pipe section of the water supply pipe is fixed at the included angle between the upper flange of a chamfer I-beam of the plate type node and the rectangular web, and the nozzle body I is vertically positioned on the central connection line of the upper node disc and the lower node disc and is close to the upper node disc;
Six I-shaped Liang Wanguan II are sequentially positioned on the vertical middle plane between the webs of two chamfer I-shaped Liang Juxing adjacent to the plate type node;
the six nozzles II are positioned at the circumferential positions of the upper node disc and the lower node disc;
The application method of the internal spray type fireproof plate type node structure comprises the following steps:
Firstly, judging that fire disaster occurs;
secondly, starting a pressurized water supply system for a water supply pipe, spraying water mist from a nozzle II connected with a node disc short pipe II, and filling water mist into a hollow node area formed by six chamfer I-beams, an upper node disc and a lower node disc; meanwhile, water mist is sprayed out from a nozzle II connected with six I-shaped Liang Wanguan II, and the surfaces of rectangular webs within the half length range of the six chamfer I-shaped beams and the inner surfaces of chamfer upper flanges and chamfer lower flanges connected with the rectangular webs are covered with the water mist; the spraying is continued, and the whole plate-type node can be wrapped by the water mist overflowed in a short time, so that the purposes of heat insulation and temperature reduction and aluminum alloy component temperature inhibition are realized;
Thirdly, judging that the fire is extinguished, and continuously providing pressurized water for the water supply pipe for 5-10 min to ensure that the aluminum alloy component is cooled to room temperature;
and fourthly, closing the water supply system.
The beneficial effects of the invention are as follows:
The internal spray type fireproof plate type node structure provided by the invention overcomes the demand of public buildings on reflecting aluminum alloy metal texture and enjoying regular dense triangular grid aesthetic feeling of an indoor ceiling while making up for poor fireproof performance of the aluminum alloy structure, has strong concealment in fireproof protection method, high reliability and lower cost by utilizing a water spray nozzle, is suitable for aluminum alloy latticed shell structures with different curved surface shapes, is especially suitable for aluminum alloy plate type node structures with beam heights (I-shaped section beams and hollow rectangular box beams) of 250mm or more, and is especially simple and convenient in use method, and easy to maintain and replace parts.
The hollow node area formed by the node disc and the six chamfer I-beams can be filled with a water mist layer through the arrangement of the nozzle I below the lower disc I of the nozzle body I;
Through the arrangement of the six beam water outlet holes I and the six I-shaped Liang Wanguan I, triangular grids with different specifications in the building engineering can be filled with water mist, and the fire protection device is particularly suitable for the fire protection of plate type nodes with beam heights of 400-550 mm;
The beam water outlet holes I are arranged at different positions on the circumference of the cross section of the hollow column pipe I of the nozzle body I, so that the requirements of different included angles between adjacent beam members extending in all directions of part of plate-type nodes in the building engineering are met;
the requirement that the node disc slightly arches in the transition process of the net shell from the support to the top point is met by selecting the bent pipe A with different corners, and the optimization of the spray protection effect according to the specific length of the beam member is facilitated;
The design that the water supply pipe is fixed at the included angle between the upper flange of the chamfer and the rectangular web plate and the design that six nozzles I connected with I-Liang Wanguan I are positioned on the circumferences of the upper node plate and the lower node plate when seen from the top are adopted, so that the concealment of fireproof protection is greatly enhanced, and the metal texture of an aluminum alloy structure and the aesthetic feeling of a regular grid of a ceiling are facilitated to be appreciated;
the hollow node area formed by the node disc and the six chamfer I-beams can be filled with a water mist layer through the arrangement of the nozzle II below the disc II below the nozzle body II;
Through the arrangement of the six beam water outlets II and the six I-shaped Liang Wanguan II, triangular grids with different specifications in the building engineering can be filled with water mist, and the method is particularly suitable for fireproof protection of plate-type nodes with the beam heights of 250-400 mm;
the beam water outlet hole II is arranged at different positions on the circumference of the cross section of the hollow inverted cone pipe II of the spray head body II, so that the requirements of different included angles between adjacent beam members extending in all directions of part of plate-type nodes in the building engineering are met;
the requirement that the node disc slightly arches in the transition process of the net shell from the support to the top point is met by selecting the bent pipe B with different corners, and the optimization of the spray protection effect according to the specific length of the beam member is facilitated;
The design that six nozzles II connected to the I-shaped Liang Wanguan II are positioned on the circumferences of the upper node disc and the lower node disc in overlooking is adopted, so that the concealment of fireproof protection is greatly enhanced, and the metal texture of an aluminum alloy structure and the aesthetic feeling of a regular grid of a ceiling are facilitated to be appreciated;
The invention realizes the heat insulation and cooling protection of the triangular grid formed by the node plate, the hollow node domain formed by the six chamfer I-beams and the chamfer I-beams between adjacent nodes, is suitable for various curved surface aluminum alloy net shell structures which need to solve the fire prevention problem of aluminum alloy plate nodes in a targeted way, conforms to the great trend of the vigorous construction of the aluminum alloy net shell structures, can be combined with the intellectualization and informatization of the current fire protection facilities, has simple and reliable use method, provides reference for the fire prevention protection design of members with new structures, the fire prevention transformation of the reconstruction structure and the revision of related standards, has huge social economy and public safety benefit, and is beneficial to improving the development level of space structures in China.
Drawings
FIG. 1 is a schematic structural diagram of a composite spray head I scheme adopted by the invention;
FIG. 2 is a top view of a partial structure of the present invention employing a composite spray head I scheme;
FIG. 3 is a front view of a partial structure of the present invention employing a composite spray head I scheme;
FIG. 4 is an exploded view of the structure of FIG. 1;
FIG. 5 is a schematic structural view of a composite spray head I of the present invention;
FIG. 6 is a cross-sectional view of a body I of the composite spray head I of the present invention;
FIG. 7 is a schematic structural diagram of a solution of the present invention using a composite spray nozzle II;
FIG. 8 is a top view of a partial structure of the present invention employing a composite spray head II scheme;
FIG. 9 is a front view of a partial structure of the present invention employing a composite spray head II scheme;
FIG. 10 is an exploded view of the structure of FIG. 7;
FIG. 11 is a schematic structural view of a composite spray head II of the present invention;
FIG. 12 is a cross-sectional view of a nozzle body II of the composite nozzle II of the present invention.
Detailed Description
As shown in fig. 1 to 6, a method for using an internal spray type fireproof plate type node structure comprises a plate type node 1, a water supply pipe 2 and a composite spray head i 3;
The plate type node 1 comprises a node disc 1-1, a bolt 1-2 and a chamfer I-beam 1-3;
the node discs 1-1 comprise an upper node disc 1-1-1 and a lower node disc 1-1-2;
The chamfering I-beam 1-3 comprises a chamfering upper flange 1-3-1, a rectangular web plate 1-3-2 and a chamfering lower flange 1-3-3;
the composite spray nozzle I3 comprises a spray nozzle body I3-1, seven spray nozzles I3-2, a node disc short pipe I3-3 and six I-shaped Liang Wanguan I3-4.
The spray head body I3-1 is in a shape of ice, and consists of an upper disc I3-1-1, a hollow column tube I3-1-2, a hollow inverted cone tube I3-1-3 and a lower disc I3-1-4.
The diameter of the upper disc I3-1-1 is equal to the outer diameter of the hollow column tube I3-1-2, the inner and outer diameters of the hollow column tube I3-1-2 and the large opening of the hollow inverted cone tube I3-1-3 are equal, the small opening outer diameter of the hollow inverted cone tube I3-1-3 is equal to the diameter of the lower disc I3-1-4, and the upper disc I3-1-1, the hollow column tube I3-1-2, the hollow inverted cone tube I3-1-3 and the lower disc I3-1-4 are sequentially connected in a centered and welded mode;
The center of the upper disc I3-1-1 is provided with a water inlet I3-1-1-1;
Six beam outlets Shui Kong 3-1-2-1 are arranged on the cross section at the middle height of the side wall of the hollow column pipe I3-1-2, and the arrangement position of each beam outlet Shui Kong-1-2-1 ensures that the I-shaped Liang Wanguan I3-4 connected with the beam outlets are sequentially positioned on the vertical middle plane between two rectangular webs 1-3-2 of the two chamfer I-shaped beams 1-3 adjacent to the plate type node 1;
the center of the lower disc I3-1-4 is provided with a node disc water outlet I3-1-4-1.
I-Liang Wanguan I3-4 includes straight tube AI3-4-1, bent tube A3-4-2, straight tube AI3-4-3.
According to the positions of the prefabricated bolts, the upper node plate 1-1-1 of the node plate 1-1 is aligned with all the bolt holes of the chamfer upper flanges 1-3-1 of the six chamfer I-beams 1-3, the lower node plate 1-1-2 of the node plate 1-1 is aligned with all the bolt holes of the chamfer lower flanges 1-3-3 of the chamfer I-beams 1-3, the alignment of the upper node plate 1-1 and the lower node plate 1-1-2 is ensured, each bolt 1-2 sequentially penetrates through two prefabricated bolt holes in the alignment, and then each bolt 1-2 is sequentially fastened.
The elbow end of the water supply pipe 2 is connected with a water inlet I3-1-1-1 of a disc I3-1-1 on a spray head body I3-1 of the composite spray head I3, the water supply pipe 2 is fixed at the included angle between a chamfer upper flange 1-3-1 of a chamfer I-beam 1-3 of the plate type node 1 and a rectangular web plate 1-3-2, and the spray head body I3-1 is vertically positioned on the central connection line of the upper node disc 1-1-1 and the lower node disc 1-1-2 and is close to the upper node disc 1-1-1.
The six nozzles I3-2 are respectively connected with one ends of six straight pipes AII 3-4-3 of the I-Liang Wanguan I3-4, the other ends of the six straight pipes AII 3-4-3 are sequentially connected with one ends of six bent pipes A3-4-2, the other ends of the six bent pipes A3-4-2 are sequentially connected with one ends of six straight pipes AII 3-4-1, and the other ends of the six straight pipes AII 3-4-1 are sequentially connected with six beam outlets Shui Kong-1-2-1 on the hollow column pipe I3-1-2 of the spray head body I3-1.
In a plan view, the connected straight pipes AI3-4-1, the bent pipes AI3-4-2 and the straight pipes AI3-4-3 are positioned on the same straight line, each I-shaped Liang Wanguan I3-4 is positioned on a vertical middle plane horizontal projection line between two adjacent rectangular webs 1-3 of the chamfering I-shaped beam 1-3 of the plate-shaped node 1, and six nozzles I3-2 connected with the I-Liang Wanguan I3-4 straight pipes AI3-4-3 are positioned on the circumferences of the upper node disc 1-1-1 and the lower node disc 1-1-2.
In front view, the nozzle I3-2 connected to the I-shaped Liang Wanguan I3-4 is positioned at an upper elevation in the middle of the rectangular web 1-3-2.
A nozzle I3-2 is connected with one end of a node short disc pipe I3-3, and the other end of the node short disc pipe I3-3 is connected with a node disc water outlet I3-1-4-1 of a lower disc I3-1-4 of the nozzle body I3-1.
The application method of the internal spray type fireproof plate type node structure comprises the following steps:
And step one, judging that the fire disaster occurs.
Secondly, starting a pressurized water supply system for the water supply pipe 2, spraying water mist from a nozzle I3-2 connected with a node disc short pipe I3-3, and filling the hollow node areas formed by the six chamfer I-shaped beams 1-3, the upper node disc 1-1 and the lower node disc 1-1-2 with the water mist; meanwhile, water mist is sprayed out from a nozzle I3-2 connected with six I-shaped Liang Wanguan I-3-4, and the surfaces of rectangular webs 1-3-2 and the inner surfaces of chamfer upper flanges 1-3-1 and chamfer lower flanges 1-3-3 connected with the surfaces of rectangular webs 1-3-2 within the half length range of the six chamfer I-shaped beams are covered with the water mist; and the spraying is continued, and the whole plate-type node 1 can be wrapped by the water mist overflowing in a short time, so that the purposes of heat insulation and temperature reduction and aluminum alloy component temperature inhibition are realized.
And thirdly, judging that the fire is extinguished, and continuously providing the water supply pipe 2 with the pressurized water for 5-10 min to ensure that the aluminum alloy member is cooled to room temperature.
And fourthly, closing the water supply system.
As shown in figures 7 to 12 of the drawings,
The application method of the internal spray type fireproof plate type node structure comprises a plate type node 1, a water supply pipe 2 and a composite spray head II 4;
The plate type node 1 comprises a node disc 1-1, a bolt 1-2 and a chamfer I-beam 1-3;
the node discs 1-1 comprise an upper node disc 1-1-1 and a lower node disc 1-1-2;
The chamfering I-beam 1-3 comprises a chamfering upper flange 1-3-1, a rectangular web plate 1-3-2 and a chamfering lower flange 1-3-3;
The composite spray nozzle II 4 comprises a spray nozzle body II 4-1, seven spray nozzles II 4-2, a node disc short pipe II 4-3 and six I-shaped Liang Wanguan II 4-4.
The spray head body II 4-1 is in a shape of ice, and consists of an upper disc II 4-1-1, a hollow column tube II 4-1-2, a hollow inverted cone tube II 4-1-3 and a lower disc II 4-1-4.
The diameter of the upper disc II 4-1-1 is equal to the outer diameter of the hollow column tube II 4-1-2, the inner diameter and the outer diameter of the hollow column tube II 4-1-2 are equal to the inner diameter and the outer diameter of the large opening of the hollow inverted cone tube II 4-1-3, the outer diameter of the small opening of the hollow inverted cone tube II 4-1-3 is equal to the diameter of the lower disc II 4-1-4, and the upper disc II 4-1-1, the hollow column tube II 4-1-2, the hollow inverted cone tube II 4-1-3 and the lower disc II 4-1-4 are sequentially connected in a centered and welded mode.
The center of the upper disc II 4-1-1 is provided with a water inlet II 4-1-1-1;
Six beam water outlets II 4-1-3-1 are arranged on the cross section of the middle height of the conical wall of the hollow inverted conical tube II 4-1-3, and the arrangement position of each beam outlet Shui Kong 4-1-3-1 ensures that the I-Liang Wanguan II 4-4 connected with the beam outlet Shui Kong is sequentially positioned on the vertical middle plane between two rectangular webs 1-3-2 of the two chamfer I-beams 1-3 adjacent to the plate type node 1;
The center of the lower disc II 4-1-4 is provided with a node disc water outlet II 4-1-4-1.
I-Liang Wanguan II 4-4 includes straight tube BI 4-4-1, bent tube BI 4-4-2 and straight tube BII 4-4-3.
According to the positions of the prefabricated bolts, the upper node plate 1-1 of the node plate 1-1 is aligned with all the bolt holes of the chamfer upper flanges 1-3-1 of the six chamfer I-beams 1-3, the lower node plate 1-1-2 of the node plate 1-1 is aligned with all the bolt holes of the chamfer lower flanges 1-3-3 of the six chamfer I-beams 1-3, and meanwhile the alignment of the upper node plate 1-1 and the lower node plate 1-1-2 is ensured, each bolt 1-2 sequentially penetrates through two prefabricated bolt holes which are aligned, and then each bolt 1-2 is sequentially fastened.
The elbow end of the water supply pipe 2 is connected with a water inlet II 4-1-1-1 of a disc II 4-1-1 on a sprinkler body II 4-1 of the composite sprinkler II 4, the water supply pipe 2 is fixed at the included angle between a chamfer upper flange 1-3-1 of a chamfer I-beam 1-3 of the plate type node 1 and a rectangular web plate 1-3-2, and the sprinkler body II 4-1 is vertically positioned on the central connection line of the upper node disc 1-1-1 and the lower node disc 1-1-2 and is close to the upper node disc 1-1-1.
The six nozzles II 4-2 are respectively connected with one ends of six straight pipes BII 4-4-3 of the I-Liang Wanguan II 4-4, the other ends of the six straight pipes BII 4-4-3 are sequentially connected with one ends of six bent pipes B4-4-2, the other ends of the six bent pipes B4-4-2 are sequentially connected with one ends of six straight pipes BII 4-4-1, and the other ends of the six straight pipes BII 4-4-1 are sequentially connected with six beam outlets Shui Kong-4-1-3-1 on the hollow inverted cone II 4-1-3 of the nozzle body II 4-1.
In a plan view, the connected straight pipes BI 4-4-1, the bent pipe BI 4-4-2 and the straight pipe BII 4-4-3 are positioned on the same straight line, each I-shaped Liang Wanguan II 4-4 is positioned on a vertical middle plane horizontal projection line between two adjacent rectangular webs 1-3 of the chamfering I-shaped beam 1-3 of the plate-shaped node 1, and six nozzles II 4-2 connected with the I-shaped Liang Wanguan II 4-4 straight pipe BII 4-4-3 are positioned on the circumferences of the upper node disc 1-1-1 and the lower node disc 1-1-2.
In front view, the nozzle II 4-2 connected to the I-shaped Liang Wanguan II 4-4 is located at the middle height of the rectangular web 1-3-2.
A nozzle II 4-2 is connected with one end of a node short disc pipe II 4-3, and the other end of the node short disc pipe II 4-3 is connected with a node disc water outlet II 4-1-4-1 of a lower disc II 4-1-4 of the nozzle body II 4-1.
The application method of the internal spray type fireproof plate type node structure comprises the following steps:
And step one, judging that the fire disaster occurs.
Secondly, starting a pressurized water supply system for the water supply pipe 2, spraying water mist from a nozzle II 4-2 connected with a node disc short pipe II 4-3, and filling the hollow node areas formed by the six chamfer I-beams 1-3, the upper node disc 1-1 and the lower node disc 1-1-2 with the water mist; meanwhile, water mist is sprayed out from a nozzle II 4-2 connected with six I-shaped Liang Wanguan II 4-4, and the surfaces of rectangular webs 1-3-2 and the inner surfaces of chamfer upper flanges 1-3-1 and chamfer lower flanges 1-3-3 connected with the surfaces of rectangular webs 1-3-2 within the half length range of the six chamfer I-shaped beams are covered with the water mist; and the spraying is continued, and the whole plate-type node 1 can be wrapped by the water mist overflowing in a short time, so that the purposes of heat insulation and temperature reduction and aluminum alloy component temperature inhibition are realized.
And thirdly, judging that the fire is extinguished, and continuously providing the water supply pipe 2 with the pressurized water for 5-10 min to ensure that the aluminum alloy member is cooled to room temperature.
And fourthly, closing the water supply system.

Claims (8)

1. The application method of the internal spray type fireproof plate type node structure comprises a plate type node (1) and a water supply pipe (2), wherein the plate type node (1) comprises a node disc (1-1), bolts (1-2) and a chamfer I-beam (1-3); the node disc (1-1) comprises an upper node disc (1-1-1) and a lower node disc (1-1-2);
The chamfering device is characterized in that the chamfering ends of six chamfering I-beams (1-3) are arranged between an upper node disc (1-1-1) and a lower node disc (1-1-2) at intervals, the chamfering upper flanges (1-3-1) of the six chamfering I-beams (1-3) are fixed with the upper node disc (1-1-1) through a plurality of bolts (1-2), the chamfering lower flanges (1-3-3) of the six chamfering I-beams (1-3) are fixed with the lower node disc (1-1-2) through a plurality of bolts (1-2), and the other ends of the six chamfering I-beams (1-3) extend out of the upper node disc (1-1-1) and the lower node disc (1-1-2), and the chamfering device is also characterized in that: the device also comprises a composite spray head I (3);
The composite spray head I (3) comprises a spray head body I (3-1), a spray nozzle I (3-2), a node disc short pipe I (3-3) and an I-shaped Liang Wanguan I (3-4);
the I-shaped Liang Wanguan I (3-4) is formed by sequentially connecting a straight pipe AI (3-4-1), a bent pipe A (3-4-2) and a straight pipe AII (3-4-3);
the spray head body I (3-1) is formed by sequentially centering and welding an upper disc I (3-1-1), a hollow column tube I (3-1-2), a hollow inverted cone tube I (3-1-3) and a lower disc I (3-1-4);
Six beam outlets Shui Kong (3-1-2-1) on the wall of the hollow column pipe I (3-1-2) are respectively connected with the straight pipe AII (3-4-1) end of an I-shaped Liang Wanguan I (3-4), the straight pipe AII (3-4-3) ends of six I-shaped Liang Wanguan I (3-4) are respectively arranged in a downward inclined and outward extending mode through the bent pipe A (3-4-2), and the six straight pipes AII (3-4-3) are respectively connected with a nozzle I (3-2);
The node disc water outlet I (3-1-4-1) of the lower disc I (3-1-4) is connected with a nozzle I (3-2) through a node disc short pipe I (3-3);
The water inlet I (3-1-1-1) of the upper disc I (3-1-1) is connected with the elbow end of the water supply pipe (2), the straight pipe section of the water supply pipe (2) is fixed at the included angle between the chamfer upper flange (1-3-1) of one chamfer I-shaped beam (1-3) of the plate-type node (1) and the rectangular web (1-3-2), and the spray head body I (3-1) is vertically positioned on the central connection line of the upper node disc (1-1-1) and the lower node disc (1-1-2) and is close to the upper node disc (1-1-1); six I-shaped Liang Wanguan I (3-4) are sequentially positioned on the vertical middle plane between two adjacent chamfering I-shaped beams (1-3) rectangular webs (1-3-2) of the plate type node (1);
six nozzles I (3-2) are positioned at the circumferential positions of the upper node plate (1-1-1) and the lower node plate (1-1-2);
The application method of the inner spray type fireproof plate type node structure comprises the following steps:
Firstly, judging that fire disaster occurs;
secondly, starting a pressurized water supply system for a water supply pipe (2), spraying water mist from a nozzle I (3-2) connected with a node disc short pipe I (3-3), and filling water mist into hollow node areas formed by six chamfer I-shaped beams (1-3), an upper node disc (1-1-1) and a lower node disc (1-1-2); meanwhile, water mist is sprayed out from a nozzle I (3-2) connected with six I-shaped Liang Wanguan I (3-4), and the surfaces of rectangular webs (1-3-2) in the half length range of the six chamfer I-shaped beams (1-3) and the inner surfaces of chamfer upper flanges (1-3-1) and chamfer lower flanges (1-3-3) connected with the surfaces are covered with the water mist; the spraying is continued, and the whole plate-type node (1) can be wrapped by the water mist overflowed in a short time, so that the purposes of heat insulation and temperature reduction and aluminum alloy component temperature inhibition are realized;
Thirdly, judging that the fire is extinguished, and continuously providing the water supply pipe (2) with pressurized water for 5-10 min to ensure that the aluminum alloy component is cooled to room temperature;
and fourthly, closing the water supply system.
2. The method of using an internal spray fire panel node structure according to claim 1, wherein: the spray head body I (3-1) is in a shape of ice, the diameter of the upper disc I (3-1-1) is equal to the outer diameter of the hollow column pipe I (3-1-2), the inner and outer diameters of the hollow column pipe I (3-1-2) are equal to the inner and outer diameters of a large opening of the hollow inverted cone pipe I (3-1-3), and the outer diameter of a small opening of the hollow inverted cone pipe I (3-1-3) is equal to the diameter of the lower disc I (3-1-4);
The water inlet I (3-1-1-1) is arranged in the center of the upper disc I (3-1-1);
Six beam outlets Shui Kong (3-1-2-1) on the wall of the hollow column pipe I (3-1-2) are arranged on the cross section at the middle height at intervals; the node disc water outlet hole I (3-1-4-1) is arranged in the center of the lower disc I (3-1-4).
3. The method of using an internal spray fire panel node structure according to claim 1, wherein: the bending angle of the bent pipe A (3-4-2) is 125-135 degrees.
4. The method of using an internal spray fire panel node structure according to claim 1, wherein: the size of the fog drops sprayed by the nozzle I (3-2) meets the requirements of national standards on the particle size of water spray or fine water mist, and the particle size of the fog drops is below 1.0 mm.
5. The application method of the internal spray type fireproof plate type node structure comprises a plate type node (1) and a water supply pipe (2), wherein the plate type node (1) comprises a node disc (1-1), bolts (1-2) and a chamfer I-beam (1-3);
The node disc (1-1) comprises an upper node disc (1-1-1) and a lower node disc (1-1-2);
The chamfering ends of the six chamfering I-beams (1-3) are arranged between the upper node plate (1-1-1) and the lower node plate (1-1-2) at intervals, the chamfering upper flanges (1-3-1) of the six chamfering I-beams (1-3) are fixed with the upper node plate (1-1-1) through a plurality of bolts (1-2), the chamfering lower flanges (1-3-3) of the six chamfering I-beams (1-3) are fixed with the lower node plate (1-1-2) through a plurality of bolts (1-2), and the other ends of the six chamfering I-beams (1-3) extend out of the upper node plate (1-1-1) and the lower node plate (1-1-2);
The method is characterized in that: the device also comprises a composite spray head II (4);
the composite spray nozzle II (4) comprises a spray nozzle body II (4-1), a spray nozzle II (4-2), a node disc short pipe II (4-3) and an I-shaped Liang Wanguan II (4-4);
the I-shaped Liang Wanguan II (4-4) is formed by sequentially connecting a straight pipe BI (4-4-1), a bent pipe B (4-4-2) and a straight pipe BII (4-4-3);
The spray head body II (4-1) is formed by sequentially centering and welding an upper disc II (4-1-1), a hollow column tube II (4-1-2), a hollow inverted cone tube II (4-1-3) and a lower disc II (4-1-4);
Six beam water outlets II (4-1-3-1) on the conical surface of the hollow inverted cone pipe II (4-1-3) are respectively connected with the straight pipe BI (4-4-1) end of one I-shaped Liang Wanguan II (4-4), the straight pipe BII (4-4-3) ends of six I-shaped Liang Wanguan II (4-4) are respectively arranged horizontally outwards through the bent pipe B (4-4-2), and the six straight pipes BII (4-4-3) are respectively connected with a nozzle II (4-2);
the lower disc II (4-1-4) is connected with a nozzle II (4-2) through a node disc short pipe II (4-3) at a node disc water outlet II (4-1-4-1);
The water inlet II (4-1-1-1) of the upper disc II (4-1-1) is connected with the elbow end of the water supply pipe (2), the straight pipe section of the water supply pipe (2) is fixed at the included angle between the upper chamfer flange (1-3-1) of one chamfer I-shaped beam (1-3) of the plate-type node (1) and the rectangular web (1-3-2), and the spray head body I (3-1) is vertically positioned on the central connection line of the upper node disc (1-1-1) and the lower node disc (1-1-2) and is close to the upper node disc (1-1-1);
Six I-shaped Liang Wanguan II (4-4) are sequentially positioned on the vertical middle plane between two adjacent chamfering I-shaped beams (1-3) rectangular webs (1-3-2) of the plate type node (1);
Six nozzles II (4-2) are positioned at the circumferential positions of the upper node plate (1-1-1) and the lower node plate (1-1-2);
The application method of the inner spray type fireproof plate type node structure comprises the following steps:
Firstly, judging that fire disaster occurs;
Secondly, starting a pressurized water supply system for a water supply pipe (2), spraying water mist from a nozzle II (4-2) connected with a node disc short pipe II (4-3), and filling water mist into hollow node areas formed by six chamfer I-shaped beams (1-3), an upper node disc (1-1-1) and a lower node disc (1-1-2); meanwhile, water mist is sprayed out from a nozzle II (4-2) connected with six I-shaped Liang Wanguan II (4-4), and the surfaces of rectangular webs (1-3-2) in the half length range of the six chamfer I-shaped beams (1-3) and the inner surfaces of chamfer upper flanges (1-3-1) and chamfer lower flanges (1-3-3) connected with the surfaces are covered with the water mist; the spraying is continued, and the whole plate-type node (1) can be wrapped by the water mist overflowed in a short time, so that the purposes of heat insulation and temperature reduction and aluminum alloy component temperature inhibition are realized;
Thirdly, judging that the fire is extinguished, and continuously providing the water supply pipe (2) with pressurized water for 5-10 min to ensure that the aluminum alloy component is cooled to room temperature;
and fourthly, closing the water supply system.
6. The method of using an internal spray fire panel node structure according to claim 5, wherein: the spray head body II (4-1) is in a ice-like shape, the diameter of the upper disc II (4-1-1) is equal to the outer diameter of the hollow column tube II (4-1-2), the inner diameter and the outer diameter of the hollow column tube II (4-1-2) are equal to the inner diameter and the outer diameter of a large opening of the hollow inverted cone tube II (4-1-3), and the outer diameter of a small opening of the hollow inverted cone tube II (4-1-3) is equal to the diameter of the lower disc II (4-1-4);
The water inlet hole II (4-1-1-1) is arranged in the center of the upper disc II (4-1-1);
Six beam water outlets II (4-1-3-1) on the conical wall of the hollow inverted conical tube II (4-1-3) are arranged on the cross section at the middle height at intervals;
The node disc water outlet hole II (4-1-4-1) is arranged in the center of the lower disc II (4-1-4).
7. The method of using an internal spray fire panel node structure according to claim 5, wherein: the bending angle of the bent pipe B (4-4-2) is 135-145 degrees.
8. The method of using an internal spray fire panel node structure according to claim 5, wherein: the size of the fog drops sprayed by the nozzle II (4-2) meets the requirements of national standards on the particle size of water spray or fine water mist, and the particle size of the fog drops is less than 1.0 mm.
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