CN111321817A

CN111321817A - Use method of inner spray type fireproof plate type node structure

Info

Publication number: CN111321817A
Application number: CN202010300698.4A
Authority: CN
Inventors: 尹亮; 阚强; 韩伟平
Original assignee: Tianjin Fire Research Institute of MEM
Current assignee: Tianjin Fire Research Institute of MEM
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-06-23

Abstract

The invention relates to a use method of an internal spray type fire-proof plate type node structure, which is used for judging that a fire disaster occurs; starting a pressure water supply system for a water supply pipe, spraying water mist from a nozzle I connected with a short pipe I of the node disc, and filling water mist in 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-beam bent pipes I, and the surfaces of the rectangular web plate in the half-length range of the six chamfered I-beams and the inner surfaces of the chamfered upper flange and the chamfered lower flange connected with the rectangular web plate are covered with the water mist; the spraying is continued, and the water mist wraps the whole plate type node, so that the purposes of heat insulation, temperature reduction and temperature inhibition of the aluminum alloy component are achieved; and judging that the fire is extinguished, ensuring that the aluminum alloy component is cooled to room temperature, and closing a water supply system. The invention provides reference for the fireproof protection design of the components of the newly-built aluminum alloy latticed shell structure, the fireproof reconstruction during reconstruction and extension and the revision of related standards, and is beneficial to improving the safe development level of the spatial structure in China.

Description

Use method of inner spray type fireproof plate type node structure

Technical Field

The invention relates to the field of building structure fire prevention, in particular to a use method of an internal spray type fireproof plate type node structure, which is a use method of a structure which is developed by aiming at a novel metal building structure of an aluminum alloy reticulated shell and is wrapped by water mist in a plate type node under fire and a fireproof protection integrated internal spray type fireproof plate type node structure and a use method after the fire occurs.

Background

In public buildings (stadiums, exhibition halls, theaters and plantations), 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 latticed shells with various shapes as roof bearing structures, such as the Nanjing niu shoshan Buddha roof palace, the Chengdu Beading five-item sports centers and the like.

For the aluminum alloy latticed shell node construction used in large quantity at present, application numbers: cn201611045175.x describes the connection between components. Good corrosion resistance and low later maintenance cost are always factors for selecting the aluminum alloy structure, but poorer fire resistance compared with the steel structure is also an obstacle for popularization of the aluminum alloy structure.

The fireproof coating is sprayed on the surface of the aluminum alloy member (application number: CN 201710501406.1), the metal texture performance is influenced, and no coating product which is well applied and used for protecting the aluminum alloy member is available on the market at present, and electrochemical corrosion can be generated by using the fireproof coating for spraying a steel structure.

With application number: the technology proposed by CN201720334290.2 is at least messy under the ceiling, goes against the original purpose of building design, and does not have the basic requirement of building beauty.

Therefore, it is urgently 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 aluminum alloy reticulated shell structure building ceiling and is suitable for the curved surface modeling of the reticulated shell structure, wherein the reticulated shell is spherical, arched or free curved surface type, the grid adopts equilateral or non-equilateral triangle, the node plates are no longer flat plates, and no more uniformly distributed 60-degree included angles exist between the rod pieces, so that the purpose of making up the relatively poor fire resistance of the aluminum alloy (reticulated shell) structure is achieved. Undoubtedly the use of water protection technology is suitable, and in particular the protection technology of fogging allows the goal to be achieved more economically and efficiently, which will necessarily involve the spray head, the product of which atomizes the water.

The current overall technical profile is as follows:

(1) sprinkler product and construction for fire suppression: such sprinklers are widely available, but are different from the object of the present invention, since "fire fighting cannot replace passive fire protection of building structures" is a well-defined content and industry consensus. The special characteristics are as follows: application No.: CN201810466046.0 has disclosed one kind and has opened the inclined hole through the shower nozzle barrel, utilizes the recoil force of penetrating water to realize rotatory device of putting out a fire, improving fire extinguishing efficiency, similar technique has the application number yet: CN 201320099018.2; application No.: cn201611045175.x discloses a shear-resistant enhanced plate-type node construction relying on a lower node plate opening for installation of fire-control and fire-extinguishing sprinklers.

(2) A shower nozzle device for removing dust: application No.: CN201710962239.0 discloses a device for mixing flue gas by further atomizing atomized water droplets into finer particles with wind.

(3) Spray head device for industrial product cooling: application No.: CN201822024334.9 discloses a device for cooling high-temperature castings by arranging a plurality of existing spray nozzles, wherein the high-temperature castings rotate in the device in order to realize uniform cooling; application No.: CN201120451865.1 discloses a device for cooling steel pipes from different angles outside the steel pipes, especially for steel pipes with thick wall, which can be cooled uniformly without cracks and poor mechanical properties. It can be seen that: such techniques are not specific to the problem that is different from the present invention, and thus there is no specific reference.

(4) Shower head apparatus for thermal insulation: application No.: CN201320499669.0 discloses a spray head device for protecting vertical members such as glass curtain walls and the like by using fine water mist, which is characterized in that the spray head is arranged outside the members and sprays water to the surfaces of the members exposed to fire scenes; application No.: CN201720334290.2 discloses a technique for fixing a pipeline under an aluminum alloy roof, and blocking high temperature flue gas from impacting the aluminum alloy (arch) roof by using high pressure water to impact the inner surface of a conical guide plate with an opening facing the roof to form a conical outer water jet curtain. Obviously, the technology neglects that the aluminum alloy roofs in the current public buildings are all application numbers: the current situation of the plate type node latticed shell structure with a mesh middle triangular hollow-out structure described in cn201611045175.x only emphasizes that the plate type node latticed shell structure is installed below a roof, but does not emphasize which part of aluminum alloy components is protected, so that the pertinence is lacked, and the extremely expensive cost is not avoided if the plate type node latticed shell structure is applied; supposing that the pipeline of the water protection system is connected to the indoor surface of the aluminum alloy roof, and the fire protection design that the spray head is connected to the tail end of the connecting pipe extending out of the roof and attached to the surface of the aluminum alloy structure 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 the fire-proof coating; the shower nozzle scheme that provides simultaneously is that the water resource is comparatively extravagant from now, and in the inside of the toper cascade that forms, the aluminum alloy structure can not contact water, and the outside protective radius that can extend of toper cascade is very limited again, and final scattering is the splash, especially will have the component surface of large tracts of land (web and the upper and lower edge of a wing medial surface that links to each other with the web) to the aluminum alloy latticed shell structure of roof beam height in the current engineering in 250mm ~550mm scope and can not protected.

(5) Have the shower nozzle of cooling, thermal-insulated function concurrently: application No.: CN201010298507.1 is in order to solve the water smoke shower nozzle can not autogiration, the droplet particle diameter is big, the water use is many, spray uneven problem, provides one kind on the disc face of installation nozzle, and there is certain plane contained angle depending on nozzle and radial end to penetrate the shower nozzle device that water provided rotary power to the tangential component of disc, realize 360 even sprays of thin water smoke, satisfy the demand that the object surface that building ventilating shaft, safe evacuation passageway, radar detected and infrared detection are unanimous. When the spray head is applied to the problems to be solved by the invention, the fine water mist uniformly distributed downwards cannot effectively protect the aluminum alloy structure of the ceiling, the aesthetic feeling and the metal texture of regular grids of the aluminum alloy structure ceiling cannot be influenced only by installing the spray head and the pipeline which is not described, the specific grid configuration of the aluminum alloy structure does not need to be sprayed in a rotating mode, and therefore, the tangential momentum is wasted.

(6) Other related devices and configurations: application No.: CN201720333657.9 discloses an aluminum alloy structural roof with a beam member of a hollow tubular structure, and water is circulated inside the hollow tubular member and the node member for fireproof cooling. Application No.: CN201611045175.X describes that the most commonly used aluminum alloy latticed shell beam member in the current engineering is an extrusion-molded solid I-shaped section beam, and is bolted with an upper node disc and a lower node disc, and a small amount of rectangular section hollow aluminum beam members (hollow tubular structures) adopted in the current engineering are also bolted between the upper node disc and the lower node disc, namely, a node area is a hollow area, so that the water circulation condition cannot be formed even if a silica gel sealing ring is adopted in the current engineering. Importantly, the aluminum alloy structure has the outstanding characteristics that the weight is light, the material density is 1/3 of a steel structure, the height of a beam rod in the current engineering is 175-550 mm, and the extra weight gain can accelerate the collapse of a roof structure under the fire if water is circulated in the rod with the same equivalent section, so that the design and practice are not feasible; application No.: CN201810201918.0 discloses a water tank device arranged on a steel structure, which sprays water uniformly to the steel structure by adjusting a nozzle connected to a water spray pipe by a transmission mechanism under fire so as to protect the safety of the structure under fire; application No.: CN201620117689.0 discloses a tank spray structure with four nozzles in a plane which is rotated by means of water jet in the plane to assist the rotation.

Summarizing the above prior art, it can be found that:

(1) there is no fire protection technology and product structure which can meet the requirements of metallic appearance of aluminum alloy, aesthetic feeling of dense triangular meshes of indoor reticulated shell structure ceiling and curved surface modeling of reticulated shell structure (the reticulated shell is spherical, arched or free curved surface type, and the meshes are equilateral or non-equilateral triangles).

(2) The prior art which can solve part of problems also has no required pertinence, so the feasibility is poor, and the method belongs to hard application.

(3) The design purpose of selecting the aluminum alloy net shell structure roof for public buildings and the safety combination under the fire of a protection structure can not be realized by using the nozzle products and the devices developed for solving other problems.

Disclosure of Invention

In view of the conditions and the defects of 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 is provided with a plate type node internal spray water spray protection structure under fire and meets the current engineering requirements and the design purpose of a roof with an aluminum alloy latticed shell structure selected for a building, and a use method after the fire occurs.

The invention overcomes the defects that the prior art can not meet the requirements of obtaining the appearance with aluminum alloy metal texture, the aesthetic feeling of dense triangular meshes of the ceiling of the indoor reticulated shell structure and the curved surface modeling of the reticulated shell structure in public buildings.

The invention can provide an integrated internal water spray fireproof plate type node structure while meeting the pursuit of an architect on the metal texture appearance of the aluminum alloy and not influencing the regular appearance of the triangular meshes of the indoor ceiling. The solution is not at all an accumulation of prior art solutions, technical details. The structure of the built-in composite spray head enables the hollow node domain and the beam member which is branched and extends in all directions to obtain reliable cooling protection at the same time, and can adapt to the change of the curved surface modeling of the reticulated shell structure, such as: the upper and lower node plates used in the free-form surface reticulated shell are slightly arched; the grid is stressed optimally or the included angles between the adjacent beam members extending towards all directions caused by the transition of the grid to the support position are different, and the like. When the grid shell is used at a net shell support with a floor boundary, for saving, 1/2 of the spray head body can be even manufactured, namely, only 4I-beam bent pipes and 4 nozzles are reserved for carrying out fire protection on half plate type nodes at the support (the support is usually provided with a plate type node structure in which an upper half node disc and a lower half node disc are clamped and bolted with four chamfer I-beams and is simultaneously bolted with a steel support). The trace of the fireproof protection product cannot be completely noticed at the view angle of the lower flange or the lower node disc of the beam (I-shaped section beam or hollow box section beam) facing indoor personnel. The invention provides a novel use method of a hidden type integrated fireproof plate type node structure with internal water spray protection.

The integrated internal spray type fireproof plate type node structure obtained by applying the technical scheme and the cylindrical surface, spherical surface and free-form surface reticulated shell structure comprising the fireproof plate type nodes realize the requirements of the building on the regularity of metal texture and grid appearance, simultaneously conform to the characteristics of corrosion-resistant materials of an aluminum alloy structure, realize the dead-angle-free fireproof protection of the reticulated shell structure while using less water by means of a water spray technology, and have obvious social, economic and safety benefits. The invention provides reference for the manufacture and revision of related fire-proof standards, the breaking of fire-proof obstacles in the process of popularizing the aluminum alloy latticed shell structure and the improvement of structure fire-proof in the current aluminum alloy engineering.

In order to achieve the purpose, the invention adopts the technical scheme that: a using method of an 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 chamfering I-beams; the node disks comprise an upper node disk and a lower node disk;

six the setting of chamfer end spaced of chamfer I-beam is 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 outside the six chamfer I-beams other end stretched out last node dish and 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-beam bent pipe I;

the I-beam bent pipe 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 welding an upper disc I, a hollow column pipe I, a hollow inverted cone pipe I and a lower disc I in a centering manner;

six beam water outlet holes I on the pipe wall of the hollow column pipe I are respectively connected with the straight pipe AI end of an I-beam bent pipe I, the straight pipe AI II ends of six I-beam bent pipes I are respectively arranged in a downward inclined and outward extending mode through bent pipes A, and six straight pipes AI I are respectively connected with a nozzle I;

a node disc water outlet 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 elbow end of a water supply pipe, and the straight pipe section of the water supply pipe is fixed at the included angle between the chamfered upper flange of one chamfered I-beam of the plate type node and the rectangular web plate, so that the spray head body I is vertically positioned on the central connecting line of the upper node disc and the lower node disc and is close to the upper node disc; the six I-beam bent pipes I are sequentially positioned on the vertical middle surface between two rectangular webs of the chamfer I-beam adjacent to the plate type node;

the six nozzles I are all located at the circumferential positions of the upper node disc and the lower node disc;

a use method of an internal spray type fireproof plate type node structure comprises the following steps:

step one, judging that a fire disaster occurs;

secondly, starting a pressure water supply system for a water supply pipe, spraying water mist from a nozzle I connected with a short pipe I of the node disc, and filling water mist into a hollow node area formed by the six chamfered I-shaped beams, the upper node disc and the lower node disc; meanwhile, water mist is sprayed out from a nozzle I connected with six I-beam bent pipes I, and the surfaces of the rectangular web plate in the half-length range of the six chamfered I-beams and the inner surfaces of the chamfered upper flange and the chamfered lower flange connected with the rectangular web plate are covered with the water mist; the spraying is continued, the overflowing water mist can wrap the whole plate type joint within a short time, and the purposes of heat insulation, temperature reduction and temperature inhibition of the aluminum alloy component are achieved;

thirdly, judging that the fire is extinguished, and continuously providing pressurized water for a water supply pipe for 5-10 min to ensure that the aluminum alloy component is cooled to the room temperature;

and fourthly, closing the water supply system.

A using method of an 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 chamfering I-beams;

the node disks comprise an upper node disk and a lower node disk;

the chamfering ends of the six chamfering I-beams are arranged between the upper node disc and the lower node disc at intervals, chamfering upper flanges of the six chamfering I-beams are fixed with the upper node disc through a plurality of bolts, chamfering lower flanges of the six chamfering I-beams are fixed with the lower node disc through a plurality of bolts, and the other ends of the six chamfering I-beams extend out of the upper node disc and the lower node disc;

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 disc short pipe II and an I-beam bent pipe II;

the I-beam bent pipe II is formed by sequentially connecting a straight pipe BI, a bent pipe B and a straight pipe BI;

the spray head body II is formed by sequentially welding an upper disc II, a hollow column pipe II, a hollow inverted cone pipe II and a lower disc II in a centering way;

six beam water outlets II on the conical surface of the hollow inverted conical pipe II are respectively connected with the straight pipe BI ends of an I-beam bent pipe II, the straight pipe BI ends of six I-beam bent pipes II are respectively outwards and horizontally arranged through bent pipes B, and six straight pipes BI are respectively connected with a nozzle II;

the water outlet hole II of the lower disc II node disc is connected with a nozzle II through a node disc short pipe II;

the water inlet hole II of the upper disc II is connected with the elbow end of a water supply pipe, and the straight pipe section of the water supply pipe is fixed at the included angle between the upper chamfered flange of one chamfered I-shaped beam of the plate type joint and the rectangular web plate, so that the spray head body I is vertically positioned on the central connecting line of the upper joint plate and the lower joint plate and is close to the upper joint plate;

the six I-beam bent pipes II are sequentially positioned on the vertical middle surface between two rectangular webs of the chamfer I-beam adjacent to the plate type node;

the six nozzles II are all positioned at the circumferential positions of the upper node plate and the lower node plate;

step one, judging that a fire disaster occurs;

secondly, starting a pressure water supply system for a water supply pipe, spraying water mist from a nozzle II connected with a short pipe II of the node disc, and filling water mist into a hollow node area formed by the six chamfered H-beams, the upper node disc and the lower node disc; meanwhile, water mist is sprayed out from a nozzle II connected with six I-beam bent pipes II, and the surfaces of the rectangular web plate in the half-length range of the six chamfered I-beams and the inner surfaces of the chamfered upper flange and the chamfered lower flange connected with the rectangular web plate are covered with the water mist; the spraying is continued, the overflowing water mist can wrap the whole plate type joint within a short time, and the purposes of heat insulation, temperature reduction and temperature inhibition of the aluminum alloy component are achieved;

and fourthly, closing the water supply system.

The invention has the beneficial effects that:

the internal spray type fireproof plate type node structure overcomes the defect of poor fire resistance of an aluminum alloy structure, meets the requirements of public buildings on embodying the metal texture of aluminum alloy and appreciating the aesthetic feeling of regular and dense triangular meshes of indoor ceilings, has strong concealment of a fireproof protection method, high reliability and lower manufacturing cost by using a water spray nozzle, is suitable for aluminum alloy latticed shell structures with different curved surface shapes, is particularly 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 particularly simple and convenient to use, easy to maintain and easy to replace parts.

Through the arrangement of a nozzle I below a lower disc I of a nozzle body I, a hollow node area formed by a node disc and six chamfer I-shaped beams can be filled with a water mist layer;

through the arrangement of the six beam water outlets I and the six I-beam bent pipes I, triangular grids with different specifications in the building engineering can be filled with water mist, and the fire protection plate is particularly suitable for fire protection of plate type nodes with beam heights of 400 mm-550 mm;

the beam water outlet holes I are selected to be arranged at different positions of the circumference of the cross section of the hollow column pipe I of the spray head body I, so that the requirements of different included angles between adjacent beam members extending towards all directions by part of plate type nodes in the building engineering are met;

the bent pipes A with different corners are selected, so that the requirement that the node disc is slightly arched in the process that the latticed shell is transited from the support to the vertex is met, 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 to the I-beam bent pipe I are located on the circumferences of the upper node disc and the lower node disc when viewed from the top greatly enhance the concealment of fire protection, and are favorable for appreciating the metal texture of an aluminum alloy structure and the aesthetic feeling of regular grids of a ceiling;

through the arrangement of the nozzle II below the disc II below the nozzle body II, a hollow node area formed by the node disc and the six chamfer I-shaped beams can be filled with a water mist layer;

through the arrangement of the six beam water outlets II and the six I-beam bent pipes II, triangular grids with different specifications in the building engineering can be filled with water mist, and the fireproof protection device is particularly suitable for fireproof protection of plate type nodes with beam heights of 250 mm-400 mm;

the beam water outlet holes II are selected to be arranged at different positions of 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 towards all directions by part of plate type nodes in the building engineering are met;

the bent pipes B with different corners are selected, so that the requirement that the node disc is slightly arched in the process that the latticed shell is transited from the support to the vertex is met, and the optimization of the spray protection effect according to the specific length of the beam member is facilitated;

the design that the six nozzles II connected to the I-beam bent pipe II are positioned on the circumferences of the upper node disc and the lower node disc when viewed from the top greatly enhances the concealment of fireproof protection, and is beneficial to appreciating the metal texture of an aluminum alloy structure and the aesthetic feeling of regular grids of a ceiling;

the invention realizes the heat insulation and cooling protection of the triangular mesh formed by the hollow node domain formed by the node disc and the six chamfer I-beams and the chamfer I-beams between adjacent nodes, is suitable for various curved surface aluminum alloy latticed shell structures which aim at solving the fire prevention problem of the aluminum alloy plate type nodes, conforms to the great trend of briskly building the aluminum alloy latticed shell structures, can be combined with the intellectualization and informatization of the current fire-fighting facilities, has simple and reliable use method, provides reference for the fire prevention protection design of the newly-built structure, the fire prevention reconstruction of the reconstructed structure and the revision of related standards, has huge social, economic and public safety benefits, and is beneficial to improving the development level of the spatial structure in China.

Drawings

FIG. 1 is a schematic structural diagram of a scheme of the invention adopting a composite spray head I;

FIG. 2 is a partial structural plan view of the present invention employing a composite showerhead I arrangement;

FIG. 3 is a front view of a partial structure of the present invention using a composite spray head I;

FIG. 4 is an exploded view of the structure of FIG. 1;

FIG. 5 is a schematic structural view of a composite showerhead I of the present invention;

FIG. 6 is a sectional view of a nozzle body I of the composite nozzle I of the present invention;

FIG. 7 is a schematic structural diagram of a scheme of the invention adopting a composite spray head II;

FIG. 8 is a top view of a portion of the structure of the embodiment of the present invention using the composite showerhead II;

FIG. 9 is a front view of a partial structure of the present invention employing a composite spray head II;

FIG. 10 is an exploded view of the structure of FIG. 7;

FIG. 11 is a schematic structural view of a composite showerhead II of the present invention;

FIG. 12 is a cut-away view of a sprinkler body II of a composite sprinkler II of the present invention.

Detailed Description

As shown in fig. 1 to 6, an application method of an inner spray type fire-proof plate type node structure includes 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, bolts 1-2 and chamfer I-beams 1-3;

the node disc 1-1 comprises an upper node disc 1-1-1 and a lower node disc 1-1-2;

the chamfer I-shaped beam 1-3 comprises a chamfer upper flange 1-3-1, a rectangular web 1-3-2 and a chamfer lower flange 1-3-3;

the composite spray head I3 comprises a spray head body I3-1, seven spray nozzles I3-2, a node disc short pipe I3-3 and six I-beam bent pipes I3-4.

The spray head body I3-1 is in a icicle shape 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 are equal to the inner and outer diameters of the large opening of the hollow inverted cone tube I3-1-3, the outer diameter of the small opening 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 centering welding manner;

a water inlet I3-1-1-1 is formed in the center of the upper disc I3-1-1;

six beam water outlet holes I3-1-2-1 are formed in the cross section of the middle height of the side wall of the hollow column tube I3-1-2, and the arrangement position of each beam water outlet hole I3-1-2-1 ensures that an I-beam bent tube I3-4 connected with the beam water outlet hole I3-1 is sequentially located on the vertical middle plane between two rectangular webs 1-3-2 of the chamfer I-beam 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 hole I3-1-4-1.

The I-beam bent pipe I3-4 comprises a straight pipe AI 3-4-1, a bent pipe AI 3-4-2 and a straight pipe AI 3-4-3.

According to the positions of the prefabricated bolts, bolt holes of an upper node disc 1-1-1 of a node disc 1-1 and chamfer upper flanges 1-3-1 of six chamfer I-beams 1-3 are all aligned, bolt holes of a lower node disc 1-1-2 of the node disc 1-1 and chamfer lower flanges 1-3-3 of six chamfer I-beams 1-3 are all aligned, meanwhile, the upper node disc 1-1-1 and the lower node disc 1-1-2 are ensured to be aligned, each bolt 1-2 sequentially penetrates through two aligned prefabricated bolt holes, and then each bolt 1-2 is sequentially fastened.

The elbow end of a water supply pipe 2 is connected with a water inlet hole I3-1-1-1 of an upper disc I3-1-1 of a nozzle body I3-1 of the composite nozzle I3, the water supply pipe 2 is fixed at the corner between a chamfered upper flange 1-3-1 of a chamfered I-beam 1-3 of the plate type node 1 and a rectangular web plate 1-3-2, and the nozzle body I3-1 is vertically positioned on the central connecting line of the upper node disc 1-1-1 and a lower node disc 1-1-2 and is close to the upper node disc 1-1-1.

Six nozzles I3-2 are respectively connected with one ends of six straight pipes AII 3-4-3 of the I-beam bent pipes 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 water outlet holes I3-1-2-1 on the hollow column pipe I3-1-2 of the nozzle body I3-1.

In a top view, the connected straight pipes AI 3-4-1, the bent pipes AI 3-4-2 and the straight pipes AI 3-4-3 are positioned on the same straight line, each I-beam bent pipe I3-4 is positioned on a horizontal projection line of a vertical middle plane between two adjacent rectangular webs 1-3-2 of the two chamfer I-beams 1-3 of the plate type node 1, and six nozzles I3-2 connected with the straight pipes AI 3-4-3 of the I-beam bent pipes I3-4 are positioned on the circumferences of the upper node disc 1-1-1 and the lower node disc 1-1-2.

When viewed from the front, the nozzle I3-2 connected to the I-beam bent pipe I3-4 is positioned at the position above the middle height of the rectangular web plate 1-3-2.

A nozzle I3-2 is connected with one end of a node disc short pipe I3-3, and the other end of the node disc short pipe I3-3 is connected with a node disc water outlet hole I3-1-4-1 of a lower disc I3-1-4 of the nozzle body I3-1.

the first step is to judge that a fire has occurred.

Secondly, starting a pressure water supply system for a water supply pipe 2, spraying water mist from a nozzle I3-2 connected with a node disc short pipe I3-3, and filling water mist in a hollow node area 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 I3-2 connected with six I-beam bent pipes I3-4, and the surfaces of a rectangular web 1-3-2 in the half length range of the six chamfered I-beams 1-3 and the inner surfaces of a chamfered upper flange 1-3-1 and a chamfered lower flange 1-3-3 connected with the rectangular web are covered with the water mist; and the spraying is continued, the overflowing water mist can wrap the whole plate type node 1 in a short time, and the purposes of heat insulation and temperature reduction and inhibition of the temperature of the aluminum alloy component are achieved.

And thirdly, judging that the fire is extinguished, and continuously providing pressurized water for 5-10 min for the water supply pipe 2 to ensure that the aluminum alloy component is cooled to the room temperature.

And fourthly, closing the water supply system.

As shown in figures 7 to 12 of the drawings,

an application method of an inner 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 composite spray head II 4 comprises a spray head body II 4-1, seven spray nozzles II 4-2, a node disc short pipe II 4-3 and six I-beam bent pipes II 4-4.

The spray head body II 4-1 is in a icicle shape 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 and outer diameters of the hollow column tube II 4-1-2 are equal to the inner and outer diameters 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 centering welding mode.

A water inlet hole II 4-1-1-1 is formed in the center of the upper disc II 4-1-1;

six beam water outlet holes II 4-1-3-1 are formed in the cross section of the middle height of the conical wall of the hollow inverted conical pipe II 4-1-3, and the arrangement position of each beam water outlet hole II 4-1-3-1 ensures that the I-beam bent pipe II 4-4 connected with the beam water outlet hole II is sequentially located on the vertical middle plane between two adjacent chamfer I-beam 1-3 rectangular webs 1-3-2 of the plate type node 1;

a node disc water outlet hole II 4-1-4-1 is formed in the center of the lower disc II 4-1-4.

The I-beam bent pipe II 4-4 comprises a straight pipe BI 4-4-1, a bent pipe BI 4-4-2 and a straight pipe BI 4-4-3.

According to the positions of the prefabricated bolts, all bolt holes of an upper node disc 1-1-1 of the node disc 1-1 and chamfer upper flanges 1-3-1 of six chamfer I-beams 1-3 are aligned, all bolt holes of a lower node disc 1-1-2 of the node disc 1-1 and chamfer lower flanges 1-3-3 of six chamfer I-beams 1-3 are aligned, meanwhile, the upper node disc 1-1-1 and the lower node disc 1-1-2 are aligned, each bolt 1-2 sequentially penetrates through two aligned prefabricated bolt holes, and then each bolt 1-2 is sequentially fastened.

The elbow end of a water supply pipe 2 is connected with a water inlet hole II 4-1-1-1 of an upper disc II 4-1-1 of a spray head body II 4-1 of the composite spray head II 4, the water supply pipe 2 is fixed at the corner between a chamfered upper flange 1-3-1 of a chamfered I-beam 1-3 of the plate type joint 1 and a rectangular web plate 1-3-2, and the spray head body II 4-1 is vertically positioned on the central connecting line of the upper joint disc 1-1-1 and a lower joint disc 1-1-2 and is close to the upper joint disc 1-1-1.

Six nozzles II 4-2 are respectively connected with one ends of six straight pipes BII 4-4-3 of the I-beam bent pipe 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 six bent pipes B4-4-2 are sequentially connected with one ends of six straight pipes BI 4-4-1, and the other ends of the six straight pipes BI 4-4-1 are sequentially connected with six beam water outlet holes II 4-1-3-1 on the hollow inverted cone pipe II 4-1-3 of the nozzle body II 4-1.

In a top view, the connected straight pipes BI 4-4-1, the bent pipes BI 4-4-2 and the straight pipes BI 4-4-3 are positioned on the same straight line, each I-beam bent pipe II 4-4 is positioned on a horizontal projection line of a vertical middle plane between two adjacent rectangular webs 1-3-2 of the two chamfered I-beams 1-3 of the plate type joint 1, and six nozzles II 4-2 connected to the straight pipes BI 4-4-3 of the I-beam bent pipes II 4-4 are positioned on the circumferences of the upper joint disc 1-1-1 and the lower joint disc 1-1-2.

And in front view, the nozzle II 4-2 connected with the I-beam bent pipe II 4-4 is positioned at the middle height of the rectangular web plate 1-3-2.

And a nozzle II 4-2 is connected with one end of a node disc short pipe II 4-3, and the other end of the node disc short pipe II 4-3 is connected with a node disc water outlet hole II 4-1-4-1 of a lower disc II 4-1-4 of the nozzle body II 4-1.

the first step is to judge that a fire has occurred.

Secondly, starting a pressure 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 in a hollow node area formed by six chamfered 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-beam bent pipes II 4-4, and the surfaces of a rectangular web 1-3-2 and chamfer upper flanges 1-3-1 and chamfer lower flanges 1-3-3 connected with the surface of the rectangular web within the half length range of the six chamfer I-beams 1-3 are covered with the water mist; and the spraying is continued, the overflowing water mist can wrap the whole plate type node 1 in a short time, and the purposes of heat insulation and temperature reduction and inhibition of the temperature of the aluminum alloy component are achieved.

And fourthly, closing the water supply system.

Claims

1. A using method of an inner spray type fireproof plate type node structure comprises plate type nodes (1) and a water supply pipe (2), wherein the plate type nodes (1) comprise node discs (1-1), bolts (1-2) and chamfer I-shaped beams (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 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, 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), 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 is 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-beam bent pipe I (3-4);

the I-beam bent pipe I (3-4) is formed by sequentially connecting a straight pipe AI (3-4-1), a bent pipe AI (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 water outlet holes I (3-1-2-1) in the pipe wall of the hollow column pipe I (3-1-2) are respectively connected with the straight pipe AI (3-4-1) end of an I-beam bent pipe I (3-4), the straight pipe AI (3-4-3) ends of six I-beam bent pipes I (3-4) are respectively arranged in a downward inclined and outward extending mode through the bent pipes A (3-4-2), and the six straight pipes AI (3-4-3) are respectively connected with a nozzle I (3-2);

a 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 a water supply pipe (2), the straight pipe section of the water supply pipe (2) is fixed at the included angle between a chamfered upper flange (1-3-1) of a chamfered I-shaped beam (1-3) of the plate type joint (1) and a rectangular web plate (1-3-2), and the spray head body I (3-1) is vertically positioned on the central connecting line of the upper joint disc (1-1-1) and the lower joint disc (1-1-2) and is close to the upper joint disc (1-1-1); the six I-beam bent pipes I (3-4) are sequentially positioned on the vertical middle surface between the two adjacent rectangular webs (1-3-2) of the two chamfered I-beams (1-3) of the plate type node (1);

six nozzles I (3-2) are all positioned at the circumferential positions of the upper node disc (1-1-1) and the lower node disc (1-1-2);

step one, judging that a fire disaster occurs;

secondly, starting a pressure 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 in a hollow node area 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-beam bent pipes I (3-4), and the surfaces of a rectangular web plate (1-3-2) in the half-length range of six chamfered I-beams (1-3) and the inner surfaces of a chamfered upper flange (1-3-1) and a chamfered lower flange (1-3-3) connected with the rectangular web plate and the chamfered upper flange are covered with the water mist; the spraying is continued, the whole plate type node (1) can be wrapped by the overflowing water mist within a short time, and the purposes of heat insulation, temperature reduction and temperature inhibition of the aluminum alloy component are achieved;

thirdly, judging that the fire is extinguished, and continuously providing pressurized water for 5-10 min for the water supply pipe (2) to ensure that the aluminum alloy component is cooled to the room temperature;

and fourthly, closing the water supply system.

2. The use method of an inner spray type fire-proof plate type node structure according to claim 1 is characterized in that: the spray head body I (3-1) is in a icicle shape, the diameter of the upper disc I (3-1-1) is equal to the outer diameter of the hollow column tube I (3-1-2), the inner and outer diameters of the hollow column tube I (3-1-2) are equal to the inner and outer diameters of the large opening of the hollow inverted cone tube I (3-1-3), and the outer diameter of the small opening of the hollow inverted cone tube 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 water outlets I (3-1-2-1) on the pipe wall of the hollow column pipe I (3-1-2) are positioned on the cross section at the middle height and are arranged at intervals; the node disc water outlet I (3-1-4-1) is arranged in the center of the lower disc I (3-1-4).

3. The use method of an inner spray type fire-proof plate type node structure according to claim 1 is characterized in that: the bending angle of the bent pipe A (3-4-2) is 125-135 degrees.

4. The use method of an inner spray type fire-proof plate type node structure according to claim 1 is characterized in that: the size of the fog drops sprayed by the nozzle I (3-2) meets the requirement of national standards on the particle size of water spray or fine water mist, namely the particle size of the fog drops is below 1.0 mm.

5. A using method of an inner spray type fireproof plate type node structure comprises plate type nodes (1) and a water supply pipe (2), wherein the plate type nodes (1) comprise node discs (1-1), bolts (1-2) and chamfer I-shaped beams (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 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, 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), 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);

the method is characterized in that: the device also comprises a composite spray head II (4);

the composite spray head II (4) comprises a spray head body II (4-1), a spray nozzle II (4-2), a node disc short pipe II (4-3) and an I-beam bent pipe II (4-4);

the I-beam bent pipe 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 BI (4-4-3);

the spray head body II (4-1) is formed by sequentially 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) in a centering way;

six beam water outlet holes 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 an I-beam bent pipe II (4-4), the straight pipe BI (4-4-3) ends of six I-beam bent pipes II (4-4) are respectively horizontally arranged outwards through bent pipes B (4-4-2), and the six straight pipes BII (4-4-3) are respectively connected with a nozzle II (4-2);

the water outlet hole II (4-1-4-1) of the node disc of the lower disc II (4-1-4) is connected with a nozzle II (4-2) through a node disc short pipe II (4-3);

the water inlet hole 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 chamfered upper flange (1-3-1) of one chamfered I-beam (1-3) of the plate type node (1) and the rectangular web plate (1-3-2), and the spray head body I (3-1) is vertically positioned on the central connecting 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-beam bent pipes II (4-4) are sequentially positioned on the vertical middle surface between two adjacent rectangular webs (1-3-2) of the two chamfered I-beams (1-3) of the plate type node (1);

six nozzles II (4-2) are all positioned at the circumferential positions of the upper node disc (1-1-1) and the lower node disc (1-1-2);

step one, judging that a fire disaster occurs;

secondly, starting a pressure 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 in a hollow node area 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-beam bent pipes II (4-4), and the surfaces of a rectangular web plate (1-3-2) in the half-length range of six chamfered I-beams (1-3) and the inner surfaces of a chamfered upper flange (1-3-1) and a chamfered lower flange (1-3-3) connected with the rectangular web plate and the chamfered upper flange are covered with the water mist; the spraying is continued, the whole plate type node (1) can be wrapped by the overflowing water mist within a short time, and the purposes of heat insulation, temperature reduction and temperature inhibition of the aluminum alloy component are achieved;

and fourthly, closing the water supply system.

6. The use method of an inner spray type fire-proof plate type node structure according to claim 5 is characterized in that: the spray head body II (4-1) is in a icicle shape, the diameter of the upper disc II (4-1-1) is equal to the outer diameter of the hollow column pipe II (4-1-2), the inner and outer diameters of the hollow column pipe II (4-1-2) are equal to the inner and outer diameters of the large opening of the hollow inverted cone pipe II (4-1-3), and the outer diameter of the small opening of the hollow inverted cone pipe II (4-1-3) is equal to the diameter of the lower disc II (4-1-4);

the water inlet II (4-1-1-1) is arranged in the center of the upper disc II (4-1-1);

six beam water outlet holes II (4-1-3-1) on the conical wall of the hollow inverted conical pipe II (4-1-3) are positioned on the cross section at the middle height and are arranged at intervals;

the water outlet hole II (4-1-4-1) of the node disc is arranged in the center of the lower disc II (4-1-4).

7. The use method of an inner spray type fire-proof plate type node structure according to claim 5 is characterized in that: the bending angle of the bent pipe B (4-4-2) is 135-145 degrees.

8. The use method of an inner spray type fire-proof plate type node structure according to claim 5 is characterized in that: the size of the fog drops sprayed by the nozzle II (4-2) meets the requirement of national standard on the particle size of water spray or fine water mist, namely the particle size of the fog drops is below 1.0 mm.