CN212176152U - Outer spraying reinforcement type fireproof plate type node structure - Google Patents

Abstract

The utility model relates to an external spray reinforcement type fireproof plate type node structure, wherein a gasket is sleeved at the lower end of a hollow round pipe I, a pipe wall thickening ring is arranged at the lower end of the hollow round pipe I and is arranged at the lower end of the gasket and is welded with the hollow round pipe I, the hollow round pipe I is inserted into a hollow round pipe II, and a pipe orifice reducing ring is sleeved at the upper end of the hollow round pipe I and is welded with the hollow round pipe II; the water supply pipe is fixed on the upper edge of the chamfer flange of the chamfer I-beam, and the elbow end of the water supply pipe is in threaded connection with the upper end of the composite spray head hollow circular pipe I; the six nozzles are sequentially arranged in the six water outlets of the hollow forward conical pipe of the nozzle body; the outer sleeve hollow circular pipe II is in threaded connection with the upper ring of the spray head body; rotating and adjusting the spray head body to enable the axes of the six nozzles to be coplanar with the six rectangular webs in sequence according to the arrangement positions of the water outlet holes; the lower node plate cover covers the lower node plate hole. This structure possesses relies on the effect of giving the deity node plane water smoke back spray isointensity plate node heat insulation cooling to aluminum alloy component under the conflagration.

Description

Outer spraying reinforcement type fireproof plate type node structure

Technical Field

The utility model relates to a building structure fire prevention field, concretely relates to board-like node structure of outer spraying reinforcement type fire prevention is a structure and the integrative board-like node structure of outer spraying reinforcement type fire prevention of relying on water smoke to the structure of plate-like node structure cooling down of fire protection under possessing the conflagration to this new type metal building structure development of aluminum alloy latticed shell.

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, adapts to the curved surface shape of the reticulated shell structure (the reticulated shell is spherical, arched or free curved surface, the grid adopts an equilateral or non-equilateral triangle, and the node plates are no longer flat plates and no longer have 60-degree included angles uniformly distributed among the rod pieces), and achieves the purpose of making up the relatively poor fire resistance of the aluminum alloy (reticulated shell) structure. 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 structure for installing fire-control and fire-extinguishing nozzles by means of a lower node plate opening; application No.: CN201410636099.4 discloses a concealed type spray head in a suspended ceiling, which is developed to meet the requirements of the beauty and structural design of important places, and is extended under the action of pressurized water to make a water mist spray head push off a decorative cover cap so as to extinguish fire, and the spray head can be pushed back to the original position after use and also covered by the decorative cover cap. Particularly, the telescopic pipe is a multi-section hollow circular pipe, a sealing ring is arranged between every two sections, and construction details are not given;

(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: the problems addressed by such techniques are different from the present invention, and therefore there is no specific reference technique;

(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; meanwhile, the provided spray head scheme is waste in water resources, an aluminum alloy structure cannot contact water in the formed conical water curtain, the outward extendable protection radius of the conical water curtain is very limited, and the water is finally scattered into spray, so that the large-area component surfaces (the web plate and the inner side surfaces of the upper flange and the lower flange connected with the web plate) of the aluminum alloy latticed shell structure with the beam height within the range of 250 mm-550 mm in the current engineering cannot be 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 spray head and the pipeline which is not described are arranged at the position so as not to influence the aesthetic feeling and the metal texture of the regular grid of the aluminum alloy structure ceiling, the specific grid configuration of the aluminum alloy structure does not need to be sprayed in a rotating manner, and thus 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 prior art's situation and the not enough of existence, the utility model provides a board-like node structure of outer spraying reinforcement type fire prevention is one kind and fits current engineering demand, and the building chooses for use aluminum alloy latticed shell structure roofing design purpose, possesses the board-like node structure of integrative outer spraying reinforcement type fire prevention of relying on out node plane water smoke after-injection uniform strength board-like node pair structure cooling under the conflagration.

The utility model overcomes prior art can not satisfy in the public building obtain have the aluminium alloy metal feel outward appearance, the intensive triangle-shaped net aesthetic feeling of indoor latticed shell structure ceiling, adapt to the not enough of latticed shell structure curved surface molding demand.

The utility model discloses can provide the board-like node structure of overhanging reinforcement type fire prevention of an integration when satisfying the architect and pursuing the outward appearance of aluminum alloy metal feel, not influencing the regular appearance of indoor ceiling triangle-shaped net, be particularly suitable for processing into the board-like node that the roof beam height is not more than 250mm and be applied to building engineering.

When not in use, the telescopic composite type spray head is hidden in a node hollow area formed by the upper and lower node discs and the I-shaped section beam; during the use, under the effect of water pressure, cambered surface drain pan receives the pressurized-water impact, drives outer sleeve pipe along setting up in the convex ridge slip of inner tube surface, stretches out below node dish behind the node dish lid down in the top, and water smoke is sprayed from the reverse slope of nozzle, and the lower node dish bottom surface of subtending, I-beam lower limb surface and then whole board-like node insulate against heat, cool down. 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 cylindrical 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 spray head is used at a latticed shell support with a floor boundary, for saving, 1/2 of the spray head body can be even manufactured, namely, only 4 spray nozzles are reserved for carrying out fire 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 an upper half-node disc and a lower half-node disc and is simultaneously bolted with a steel support). The lower node disk is selected by a simple method of slightly thickening to compensate for the strength loss caused by the opening. The lower node plate cover can be selected to be consistent with the color of the aluminum alloy, or other use functions and colors can be added according to the building requirements, so that the trace of the fireproof protection product can not be noticed completely. Therefore, a hidden integrated external spray reinforcement type fireproof plate type node structure is provided in a brand new way.

The integrated external spray reinforcement 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 roof comprising the fireproof plate type nodes realize the requirements of a 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 dead-corner-free fireproof protection on a reticulated shell structure with a proper specification while using less water by means of a water spray technology, and have obvious social, economic and safety benefits. The utility model discloses a system revision of relevant fire prevention standard, abolish the transformation that promotes structure fire prevention in the fire prevention obstacle and the current aluminum alloy engineering of aluminum alloy latticed shell structural process and provide reference.

The utility model discloses a realize above-mentioned purpose, the technical scheme who adopts is: an external spray reinforced fireproof plate type node structure comprises plate type nodes and a water supply pipe, wherein the plate type nodes comprise node discs, bolts and chamfer I-shaped beams;

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

the setting of the back off end spaced of six chamfer I-beams 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 and a lower node plate cover;

a lower node disc hole is formed in the center of the lower node disc;

the composite spray head comprises an inner pipe, a gasket, an outer sleeve, a spray head body and six nozzles;

the gasket is sleeved at the lower end of a hollow circular tube I of the inner tube, a convex ridge on the side wall of the hollow circular tube I is positioned in a rectangular vertical groove I of the gasket, the tube wall thickening ring is arranged at the lower end of the hollow circular tube I and the gasket, the tube wall thickening ring and the hollow circular tube I are centered, pressed and welded, and the sliding gasket is in contact with and bonded with the tube wall thickening ring;

inserting the end I of the hollow circular tube fixed with the tube wall thickening ring into a hollow circular tube II of the outer sleeve, sleeving the tube orifice reducing ring into the upper end of the hollow circular tube I and the upper end of the hollow circular tube II to be centered, propped and welded, and enabling the convex ridge on the side wall of the hollow circular tube I to be located in the rectangular vertical groove II of the tube orifice reducing ring;

the water supply pipe is fixed at the included angle between the upper chamfer flange of one chamfer I-shaped beam of the plate type node and the rectangular web plate, and the bent end of the water supply pipe is in threaded connection and fixed with the upper end of the hollow circular pipe I of the composite spray head;

the six nozzles are sequentially arranged in the six water outlet holes of the hollow forward conical pipe of the nozzle body;

the lower end of the outer sleeve hollow circular tube II is in threaded connection with the inner ring of the circular ring at the upper part of the spray head body, and the spray head body is rotationally adjusted, so that the axes of the six nozzles are coplanar with the six rectangular webs in sequence according to the arrangement position of the water outlet holes;

the lower node plate cover covers the lower node plate hole from the lower surface of the lower node plate;

the spray head body and the outer sleeve can touch the lower node disc cover and then penetrate through the node disc hole of the lower node disc to extend to the lower part of the lower node disc, and the pipe orifice reducing ring lower annular surface at the upper end of the hollow circular pipe I is tightly contacted with the gasket upper annular surface;

or the spray head body and the outer sleeve can be contained in a hollow node domain formed by the upper node disc, the lower node disc and the six chamfer I-shaped beams.

The utility model has the advantages that:

the utility model has the advantages that: the utility model discloses a board-like node structure of outer spraying reinforcement type fire prevention when compensateing aluminum alloy structure fire resistance poor, the public building has been solved to embodying aluminum alloy metal feel, appreciate the demand of the intensive triangle-shaped net aesthetic feeling of indoor ceiling rule, the fire protection method is disguised strong, it is high to utilize water smoke shower nozzle reliability, the cost is lower, equal with board-like node structure intensity of conventionality, be applicable to different curved surface figurative aluminum alloy latticed shell structures, especially, be suitable for the board-like node structure of aluminum alloy that the roof beam height (I shape cross-section roof beam, hollow rectangle case roof beam) is not more than 250mm, especially easy maintenance and part are changed.

The nozzles in different orientations can be sequentially oriented to the vertical central lines of the edge surfaces of the rectangular webs in different directions through the rotatable adjustment connection of the upper circular ring and the outer sleeve, and then the nozzles are sprayed towards the outer surfaces of the corresponding lower chamfering flanges along the central line in the extension direction of the chamfering I-shaped beam after extending out the lower node disc hole in the working process, so that the surfaces of the beam and the node disc member facing the fire source are preferably protected, and then the whole plate type node is wrapped in water mist.

Similarly, the arrangement of the raised ridge and the rectangular vertical groove II of the orifice reducing ring also aims to prevent the nozzle body from rotating per se in the extending process, and the orifice reducing ring has a certain height, so that the nozzle body and the outer sleeve are prevented from generating non-coaxial in the extending process.

The design of the cambered surface bottom shell effectively increases the impact area for bearing pressurized incoming water, and the impact area is smoothly transited to the nozzle, so that the pressure loss is reduced.

The design through the packing ring has the flexible position of outer tube concurrently and keeps and flexible in-process water seal's effect, and contracts more tightly with the contact of mouth of pipe reducing ring under the circumstances that water pressure is big more, and sealed effect is better.

Through the design of hollow positive taper pipe, realized installing the nozzle after to plate-like node member towards the surface of burning things which may cause a fire disaster spray provide fire protection's purpose, the hollow positive taper pipe of different circular cone angles is chooseed for use to chamfer I-beam length that protects as required, when satisfying the no dead angle fire protection of suitable board-like node member of roof beam height, also the high efficiency of maximum possible has utilized the water resource.

Through the design that the thickness of the lower node disc is slightly larger than that of the upper node disc, the structural strength loss caused by the fact that the lower node disc hole is formed is made up.

The utility model discloses a hollow node domain that node dish and six chamfer I-beams constitute and the thermal-insulated cooling protection of the triangle-shaped net that chamfer I-beams formed between adjacent node, be applicable to various molding and roof beam specification aluminum alloy latticed shell structures that need the pertinence to solve the board-like node fire prevention problem of aluminum alloy, the major trend of having complied with the bubbly construction of aluminum alloy latticed shell structure, can also be intelligent with current fire-fighting equipment, the informationization combines together, the component fire prevention protection design and the fire prevention transformation who reforms the extension structure of newly-built structure revise and provide reference, huge social economy and public safety benefit have, be favorable to improving the development level of china's spatial structure.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is an exploded view of the present invention;

fig. 3 is a schematic view of the position and structure of the water supply pipe, the composite spray head and the lower node plate of the present invention;

FIG. 4 is a cut-away view of portions A and B of the structure of FIG. 3;

FIG. 5 is a structural working diagram of the present invention;

fig. 6 is a cut-away view of portion C of fig. 5.

Detailed Description

As shown in fig. 1 to 6, an external spray reinforcement type fire protection plate type node structure includes a plate type node 1, a water supply pipe 2, a composite spray head 3, and a lower node plate cover 4;

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, and a lower node disc hole 1-1-2-1 is arranged in the center of the 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 3 comprises an inner pipe 3-1, a gasket 3-2, an outer sleeve 3-3, a spray head body 3-4 and six nozzles 3-5;

the inner pipe 3-1 is composed of a hollow round pipe I3-1-1 with a convex ridge 3-1-3 and a pipe wall thickening ring 3-1-2 coaxially connected to one end face of the hollow round pipe I3-1-1, the inner diameters of the hollow round pipe I3-1-1, the pipe wall thickening ring 3-1-2 and the water supply pipe 2 are equal, and the outer diameter of the pipe wall thickening ring 3-1-2 is slightly larger than the sum of the outer diameter of the hollow round pipe I3-1-1 and the thickness of the convex ridge 3-1-3.

The gasket 3-2 is a hollow circular ring, the inner diameter of the hollow circular ring is equal to the outer diameter of the hollow circular tube I3-1-1, the outer diameter of the hollow circular ring is equal to the outer diameter of the tube wall thickening ring 3-1-2, a through-high rectangular vertical groove I3-2-1 is arranged on the inner annular surface of the hollow circular ring, and the thickness and the width of the rectangular vertical groove I3-2-1 are equal to those of the convex ridge 3-1-3.

The outer sleeve 3-3 is composed of a hollow circular tube II 3-3-1 and a tube orifice reducing ring 3-3-2 coaxially connected to one end face of the hollow circular tube II 3-3-1, the inner diameter of the hollow circular tube II 3-3-1 is equal to the outer diameter of the gasket 3-2, the inner diameter of the tube orifice reducing ring 3-3-2 is equal to the outer diameter of the hollow circular tube I3-1-1, the outer diameter of the tube orifice reducing ring is equal to the outer diameter of the hollow circular tube II 3-3-1, a through and high rectangular vertical groove II 3-3-2-1 is arranged on the inner ring surface of the tube orifice reducing ring, and the thickness and the width of the rectangular vertical groove II 3-3-2-1 are equal to.

The spray head body 3-4 is in a flying saucer shape and comprises an upper circular ring 3-4-1, a hollow forward conical tube 3-4-2 and an arc bottom shell 3-4-3, wherein the inner diameter of the upper circular ring 3-4-1 is equal to the outer diameter of a hollow circular tube II 3-3-1, the outer diameter of the upper circular ring 3-4-1 is larger than the outer diameter of the hollow circular tube II 3-3-1 and is equal to the diameter of a small opening of the hollow forward conical tube 3-4-2, the diameter of a large opening of the hollow forward conical tube 3-4-2 is equal to the diameter of the arc bottom shell 3-4-3, the thicknesses of the upper circular ring 3-4-1, the hollow forward conical tube 3-4-2 and the arc bottom shell 3-4-3 are equal and are sequentially welded, six water outlet holes 3-4-2-1 are arranged on the cross section at the middle height of the conical, the arrangement position of each water outlet hole 3-4-2-1 ensures that the axes of the nozzles 3-5 connected with the water outlet holes are coplanar with the rectangular web plates 1-3-2 of the six chamfered I-shaped beams 1-3 of the plate-type node 1 in sequence.

According to the positions of the prefabricated bolt holes, bolt holes of an upper node disk 1-1-1 of a node disk 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 disk 1-1-2 of the node disk 1-1 and chamfer lower flanges 1-3-3 of six chamfer I-beams 1-3 are all aligned, meanwhile, the upper node disk 1-1-1 and the lower node disk 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.

Aligning the convex ridge 3-1-3 with a rectangular vertical groove I3-2-1 of the gasket 3-2 at the end part of the inner pipe 3-1 without the pipe wall thickening ring 3-1-2, and then sliding the gasket 3-2 along the convex ridge 3-1-3 to penetrate into the outer surface of the inner pipe 3-1 until the gasket is contacted with and bonded with the surface of the pipe wall thickening ring 3-1-2;

the end part of an outer sleeve 3-3 without a pipe orifice reducing ring 3-3-2 is opposite to the end part of an upper inner pipe 3-1 without a pipe wall thickening ring 3-1-2, and is sleeved in a sliding way, then the outer sleeve 3-3 is adjusted in a rotating way until the rectangular vertical groove II 3-3-2-1 of the pipe orifice reducing ring 3-3-2 is aligned with the convex ridge 3-1-3 of the inner pipe 3-1, and continuously sliding the outer sleeve 3-3 a little along the convex ridge 3-1-3 to ensure that the end part of the inner tube 3-1 without the tube wall thickening ring 3-1-2 slightly extends out of the tube orifice reducing ring 3-3-2, meanwhile, the gasket 3-2 and the pipe wall thickening ring 3-1-2 enter the end part of the outer sleeve 3-3 without the pipe orifice reducing ring 3-3-2 for a certain depth.

Fixing a water supply pipe 2 at the included angle between a chamfered upper flange 1-3-1 of a chamfered I-beam 1-3 of a plate type node 1 and a rectangular web plate 1-3-2, enabling a bent end 2-1 to be vertically downward, enabling the central line of the bent end to be superposed with the connecting line of the centers of an upper node disc 1-1-1 and a lower node disc 1-1-2, and connecting the bent end 2-1 with the end part of an inner pipe 3-1 without a pipe wall thickening ring 3-1-2;

the six nozzles 3-5 are sequentially arranged on six water outlet holes 3-4-2-1 of the hollow forward conical pipe 3-4-2 of the nozzle body 3-4;

the inner ring 3-4-1 at the upper part of the nozzle body 3-4 is in threaded connection with the end part of the outer sleeve 3-3 without the pipe orifice reducing ring 3-3-2, and the nozzle body 3-4 is rotationally adjusted, so that the axes of the six nozzles 3-5 are coplanar with the six rectangular webs 1-3-2 in sequence according to the arrangement position of the water outlet hole 3-4-2-1.

The spray head body 3-4 and the outer sleeve 3-3 are accommodated in a hollow node area formed by an upper node disc 1-1-1, a lower node disc 1-1-2 and six chamfer I-shaped beams 1-3;

and covering the lower node disk cover 4 on the lower node disk hole 1-1-2-1 from the lower surface of the lower node disk 1-1-2.

Further, the gasket 3-2 is an elastic sealing material;

further, the pipe orifice reducing ring 3-3-2 should have a certain height;

further, the diameter of the lower node disc hole 1-1-2-1 is larger than the outer contour of the spray head body 3-4;

further, the thickness of the lower node disc 1-1-2 is determined according to design requirements and must be larger than that of the upper node disc 1-1-1;

further, the conical angle of the hollow positive conical pipe 3-4-2 is determined according to the length of the chamfer I-beam 1-3 to be protected, and is generally between 15 degrees and 45 degrees;

furthermore, the size of the fog drops sprayed by the nozzles 3-5 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.

A use method of an external spray reinforced 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 the water supply pipe 2, enabling water flow to enter a spray head body 3-4 from an inner pipe 3-1 through an outer sleeve 3-3 and impact an arc-surface bottom shell 3-4-3, enabling the spray head body 3-4 to drive the outer sleeve 3-3 to slide along the convex ridge 3-1-3 under the action of a reaction force, and enabling the arc-surface bottom shell 3-4-3 to touch a lower node plate cover 4 to enable the arc-surface bottom shell 3-4-3 to fall off; the outer sleeve 3-3 continues to slide along the convex ridge 3-1-3 until the surface of the pipe orifice reducing ring 3-3-2 is contacted with the surface of the gasket 3-2, at the moment, water mist is sprayed out from six nozzles 3-5 under full pressure, and the plate type node 1 is quickly and completely wrapped in the water mist from the lower surfaces of the chamfered lower flanges 1-3-3 of the six chamfered I-beams 1-3, so that the overall heat insulation and cooling effects of the plate type node 1 are realized;

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

fourthly, after the water in the spray head body 3-4 completely flows out, the spray head body 3-4 is pushed backwards to drive the outer sleeve 3-3 to slide along the convex ridge 3-1-3 until the outer sleeve is stored and reset;

fifthly, covering the lower node disc cover 4 on the lower node disc hole 1-1-2-1 from the lower surface of the lower node disc 1-1-2 again, and enabling the plate type node 1 to recover the initial state.

Claims (10)

1. An external spray reinforcement 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 end of six chamfering I-beams (1-3) is 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 end of the six chamfering I-beams (1-3) extends 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 (3) and a lower node disc cover (4);

the center of the lower node disc (1-1-2) is provided with a lower node disc hole (1-1-2-1);

the composite spray head (3) comprises an inner pipe (3-1), a gasket (3-2), an outer sleeve (3-3), a spray head body (3-4) and six nozzles (3-5);

the gasket (3-2) is sleeved at the lower end of a hollow circular tube I (3-1-1) of the inner tube (3-1), a convex ridge (3-1-3) on the side wall of the hollow circular tube I (3-1-1) is positioned in a rectangular vertical groove I (3-2-1) of the gasket (3-2), a tube wall thickening ring (3-1-2) is arranged at the lower end of the hollow circular tube I (3-1-1) and the gasket (3-2), the tube wall thickening ring (3-1-2) and the hollow circular tube I (3-1-1) are centered, abutted and welded, and the sliding gasket (3-2) is in contact with and bonded with the tube wall thickening ring (3-1-2);

inserting the end of a hollow round tube I (3-1-1) fixed with a tube wall thickening ring (3-1-2) into a hollow round tube II (3-3-1) of an outer sleeve (3-3), sleeving a tube orifice reducing ring (3-3-2) into the upper end of the hollow round tube I (3-1-1) and the upper end of the hollow round tube II (3-3-1) to be centered, propped and welded, and positioning a convex ridge (3-1-3) on the side wall of the hollow round tube I (3-1-1) in a rectangular vertical groove II (3-3-2-1) of the tube orifice reducing ring (3-3-2);

the water supply pipe (2) is fixed at the included angle between a chamfered upper flange (1-3-1) of a chamfered I-beam (1-3) of the plate type joint (1) and the rectangular web plate (1-3-2), and the bent end (2-1) of the water supply pipe (2) is in threaded connection and fixed with the upper end of a hollow circular pipe I (3-1-1) of the composite spray head (3);

the six nozzles (3-5) are sequentially arranged in six water outlet holes (3-4-2-1) of the hollow forward taper pipe (3-4-2) of the nozzle body (3-4);

the lower end of the hollow circular tube II (3-3-1) of the outer sleeve (3-3) is in threaded connection with the inner ring of the circular ring (3-4-1) at the upper part of the spray head body (3-4), and the spray head body (3-4) is rotationally adjusted, so that the axes of six spray nozzles (3-5) are coplanar with six rectangular webs (1-3-2) in sequence according to the arrangement positions of the water outlet holes (3-4-2-1);

the lower node disc cover (4) covers the lower node disc hole (1-1-2-1) from the lower surface of the lower node disc (1-1-2);

the spray head body (3-4) and the outer sleeve (3-3) can touch the lower node disc cover (4) and then penetrate through a node disc hole (1-1-2-1) of the lower node disc (1-1-2) to extend out to the lower part of the lower node disc (1-1-2), and the lower ring surface of a pipe orifice reducing ring (3-3-2) at the upper end of the hollow circular pipe I (3-1-1) is tightly contacted with the upper ring surface of the gasket (3-2);

or the spray head body (3-4) and the outer sleeve (3-3) can be accommodated in a hollow node region formed by the upper node disc (1-1-1), the lower node disc (1-1-2) and the six chamfered I-beams (1-3).

2. The external spray reinforcement type fire protection plate type node structure according to claim 1, wherein:

the inner pipe (3-1) comprises a hollow circular pipe I (3-1-1) which is provided with a convex ridge (3-1-3) along the length direction of the pipe and a pipe wall thickening ring (3-1-2) which is coaxially connected with one end of the hollow circular pipe I (3-1-1), and the inner diameters of the hollow circular pipe I (3-1-1) and the pipe wall thickening ring (3-1-2) are equal.

3. The external spray reinforcement type fire protection plate type node structure according to claim 1, wherein:

the gasket (3-2) is a hollow circular ring, is an elastic sealing material, and is provided with a through-high rectangular vertical groove I (3-2-1) on the inner ring surface.

4. The external spray reinforcement type fire protection plate type node structure according to claim 1, wherein:

the outer sleeve (3-3) is composed of a hollow circular tube II (3-3-1) and a tube orifice reducing ring (3-3-2) coaxially connected to one end face of the hollow circular tube II, the tube orifice reducing ring (3-3-2) is a hollow circular ring with a certain height, the outer diameter of the hollow circular ring is equal to the outer diameter of the hollow circular tube II (3-3-1), and a through-high rectangular vertical groove II (3-3-2-1) is arranged on the inner ring surface of the hollow circular ring.

5. The external spray reinforcement type fire protection plate type node structure according to claim 1, wherein:

the spray head body (3-4) is composed of an upper circular ring (3-4-1), a hollow positive conical pipe (3-4-2) and an arc bottom shell (3-4-3), the outer diameter of the upper circular ring (3-4-1) is equal to the diameter of a small opening of the hollow positive conical pipe (3-4-2), the diameter of a large opening of the hollow positive conical pipe (3-4-2) is equal to the diameter of the arc bottom shell (3-4-3), the thicknesses of the upper circular ring (3-4-1), the hollow positive conical pipe (3-4-2) and the arc bottom shell (3-4-3) are equal, and are sequentially welded and connected, and six water outlet holes (3-4-2-1) are arranged on the cross section of the middle height of the conical wall of the hollow forward conical pipe (3-4-2).

6. The external spray reinforcement type fire protection plate type node structure according to claim 1, wherein:

the arrangement position of each water outlet hole (3-4-2-1) ensures that the axis of a nozzle (3-5) connected with the water outlet hole is coplanar with the rectangular web plates (1-3-2) of the six chamfered I-shaped beams (1-3) of the plate type node (1) in sequence.

7. The external spray reinforcement type fire protection plate type node structure according to claim 1, wherein:

the taper angle of the hollow positive taper pipe (3-4-2) is determined according to the length of the chamfer I-shaped beam (1-3) to be protected, and is 15-45 degrees.

8. The external spray reinforcement type fire protection plate type node structure according to claim 1, wherein:

the elbow end (2-1) is vertically downward, and the central line of the elbow end is superposed with the connecting line of the centers of the upper node disc (1-1-1) and the lower node disc (1-1-2).

9. The external spray reinforcement type fire protection plate type node structure according to claim 1, wherein:

the thickness of the lower node disc (1-1-2) is determined according to design requirements and must be larger than that of the upper node disc (1-1-1), and the diameter of the hole (1-1-2-1) of the lower node disc is larger than the outer contour of the spray head body (3-4).

10. The external spray reinforcement type fire protection plate type node structure according to claim 1, wherein:

the size of the fog drops sprayed by the nozzles (3-5) 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.

Images