CN212176152U - An external spray reinforced fire board joint structure - Google Patents

Abstract

The utility model relates to an external spray reinforced fire-proof plate type joint structure. A washer is sleeved into the lower end of a hollow circular tube I, and a pipe wall thickening ring is arranged on the hollow circular tube I and at the lower end of the washer, and is welded with the hollow circular tube I. The hollow circular tube I is inserted into the hollow circular tube II, and the mouth reducing ring is sleeved into the upper end of the hollow circular tube I and welded with the hollow circular tube II; the water supply pipe is fixed on the chamfered upper flange of a chamfered I-beam. The elbow end is screwed with the upper end of the hollow tube I of the composite nozzle; the six nozzles are sequentially installed in the six water outlet holes of the hollow positive cone tube of the nozzle body; the hollow tube II of the outer casing is screwed with the upper ring of the nozzle body; rotation adjustment The nozzle body is arranged so that the axes of the six nozzles are coplanar with the six rectangular webs in sequence according to the setting positions of the water outlet holes; the lower node plate cover covers the lower node plate holes. The structure has the effect of heat insulation and cooling of the aluminum alloy components by relying on the plane water mist reverse jet of the Shenchu node and other strength plate nodes under fire.

Description

An external spray reinforced fire board joint structure

technical field

The utility model relates to the field of fire prevention of building structures, in particular to an external spray reinforced fire-proof panel-type node structure, which is developed for an aluminum alloy reticulated shell, a new type of metal building structure, capable of cooling the panel-type node structure by relying on water mist under fire. The structure and fire protection integrated external spray reinforced fire board node structure.

Background technique

In public buildings (sports venues, exhibition halls, theaters, botanical gardens), in order to pursue the expression of metallic appearance and the beauty of the dense triangular grid of indoor ceilings, architects increasingly choose aluminum alloy reticulated shells with undulating shapes. Roof load-bearing structures, such as Nanjing Niushou Mountain Foding Palace, Chengdu Coubertin Pentathlon Sports Event Center, etc.

For the currently widely used aluminum alloy reticulated shell node structure, the application number: CN201611045175.X introduces the connection relationship between the components. Good corrosion resistance and low maintenance costs have always been the factors for choosing aluminum alloy structures, but the poorer fire resistance than steel structures has always been an obstacle to the promotion of aluminum alloy structures.

Spraying fire retardant coating on the surface of aluminum alloy components (application number: CN201710501406.1) will affect the performance of metal texture, and there is currently no mature coating product on the market for the protection of aluminum alloy components, borrowing it for spraying steel structures The fire retardant coating may produce galvanic corrosion.

Using the technology proposed by the application number: CN201720334290.2, at least the underside of the ceiling will be messy, which violates the original intention of architectural design and does not meet the basic architectural aesthetic requirements.

Therefore, it is urgent to propose a method that does not destroy the metallic texture of the aluminum alloy structure, does not damage the aesthetics of the ceiling of the aluminum alloy reticulated shell structure, and adapts to the curved surface shape of the reticulated shell structure (the reticulated shell is spherical, arched or free-form surface, and the mesh is equilateral Or non-equilateral triangle, the node plate is no longer a flat plate, and the rods are no longer an evenly distributed 60° angle) integrated fire-resistant plate-type node structure, to make up for the relatively poor fire resistance of the aluminum alloy (reticulated shell) structure the goal of. There is no doubt that the use of water protection technology is suitable, especially the fogging protection technology can achieve the goal more economically and efficiently, which will inevitably involve the nozzle, a product that atomizes water.

The current overall technical overview is as follows:

(1) Nozzle products and structures for fire extinguishing: This type of nozzles has a large quantity and a wide range, but because "passive fire protection of building structures cannot be replaced by fire extinguishing" is a clear content and industry consensus, it is different from the purpose of the present invention. Special such as: Application No. CN201810466046.0 discloses a device that uses the recoil force of water jet to realize rotary fire extinguishing and improve fire extinguishing efficiency by opening inclined holes in the nozzle cylinder. Similar technologies also have application number: CN201320099018.2; Application number: CN201611045175.X announced a shear resistance-enhanced plate joint structure relying on the opening of the lower node plate to install fire control and fire extinguishing nozzles; A kind of concealed sprinkler in the ceiling developed by relying on the expansion of the telescopic pipe under the action of pressurized water, so that the fine water mist sprinkler can lift off the decorative cover and then put out the fire, and the sprinkler can be pushed back to its original position after use. And also cover with a decorative cover. In particular, it is mentioned that the telescopic tube is a multi-section hollow circular tube, and there is a sealing ring between every two sections, but no structural details are given;

(2) Nozzle device for dust removal: Application number: CN201710962239.0 discloses a device that uses wind to further atomize atomized water droplets into finer particles to mix with flue gas;

(3) Nozzle device for cooling industrial products: Application number: CN201822024334.9 discloses a device for arranging several existing nozzles to cool high-temperature castings. In order to achieve uniform cooling, the high-temperature castings are rotated in the device; Application number: CN201120451865.1 discloses a device for cooling steel pipes from different angles outside the steel pipes, especially for steel pipes with thicker walls, which can be uniformly cooled without cracks and poor mechanical properties. It can be seen that the problems aimed at by such technologies are different from those of the present invention, so there will be no specific technologies for reference;

(4) Nozzle device for heat insulation: Application No.: CN201320499669.0 discloses a nozzle device that uses fine water mist to protect vertical components such as glass curtain walls. Surface water spray; application number: CN201720334290.2 discloses a pipe fixed under an aluminum alloy roof, and high-pressure water impacts the inner surface of a conical deflector with an opening facing the roof to form a conical outer water jet to block the water. Technology of high temperature flue gas impacting aluminum alloy (arched) roof. Obviously, this technology ignores the current situation of the aluminum alloy roof in the current public buildings, all of which are the application number: CN201611045175.X, the current situation of the plate node lattice shell structure with triangular hollow in the middle of the grid, which only emphasizes the installation under the roof, not the protection. Which part of the aluminum alloy components is lacking in pertinence, and if applied, it will inevitably pay a very expensive cost; imagine that the water protection system pipeline is connected to the surface of the aluminum alloy roof facing the room, and the sprinkler is connected to the connection extending from the roof. The fire protection design attached to the surface of the aluminum alloy structure at the end of the pipe destroys the beauty of the aluminum alloy structure with the regular ceiling, and blocks the metal texture of the aluminum alloy structure, which has the same drawbacks as the fireproof coating; Water resources are relatively wasteful, and inside the formed conical water curtain, the aluminum alloy structure cannot touch the water, and the protective radius that the conical water curtain can extend outward is very limited, which will eventually scatter into water, especially for current projects. The aluminum alloy reticulated shell structure with the middle beam height in the range of 250mm~550mm will have a large area of component surfaces (the web and the inner side of the upper and lower flanges connected to the web) will not be protected;

(5) Nozzle with both cooling and heat insulation functions: Application No.: CN201010298507.1 In order to solve the problems that the water mist nozzle cannot rotate automatically, the droplet size is large, the water is too much, and the spraying is uneven, a nozzle is provided. On the surface of the disc, depending on the angle between the nozzle and the end of the radius, the nozzle device provides rotational power to the tangential component of the water jet to the disc. The need for safe evacuation routes, the outer surface of objects detected by radar and infrared detection. It can be seen that when applied to the problem to be solved by the present invention, the aluminum alloy structure of the ceiling cannot be effectively protected by the fine water mist that is evenly distributed downward. Where can the sprinkler and its undescribed pipeline be installed so as not to affect the aluminum alloy structure ceiling The beauty and metallic texture of regular grids, and the specific grid configuration of aluminum alloy structures do not require rotational jetting and waste tangential momentum;

(6) Other related devices and structures: Application No. CN201720333657.9 discloses an aluminum alloy structural roof with a hollow tubular structure for beam members, and water is circulated inside the hollow tubular members and node members for fireproof cooling. Application No.: CN201611045175.X introduced that the most commonly used aluminum alloy reticulated shell beam components in current projects are extruded solid I-shaped section beams, which are bolted to the upper and lower node disks, and a small number of rectangular section hollow cores are used in the current project. The aluminum beam member (hollow tubular structure) is also bolted between the upper and lower node disks, that is, the node domain is a hollow domain, so even if the "silicone sealing ring" is used in the current project, the conditions for water circulation cannot be formed. Importantly, one of the outstanding features of the aluminum alloy structure is that it is light in weight, and the material density is 1/3 of that of the steel structure. The height of the beam member in the current project is between 175mm and 550mm. Internal circulating water, this additional weight will accelerate the collapse of the roof structure under fire, so it is not feasible in design and practice; Application No.: CN201810201918.0 A water tank device set on a steel structure has been announced , under the fire, the sprinkler head connected to the sprinkler pipe is adjusted by the transmission mechanism to sprinkle water evenly on the steel structure to protect the safety of the structure under fire; Tank spray structure with four nozzles.

Summarizing the above existing technologies, it can be found that:

(1) There is no one that simultaneously meets the appearance of aluminum alloy metal texture, the aesthetics of the dense triangular mesh on the ceiling of the indoor reticulated shell structure, and adapts to the surface modeling requirements of the reticulated shell structure (the reticulated shell is spherical, arched or free-form surface, and the mesh adopts equilateral or non-equilateral triangles) fire protection technology and product construction;

(2) The existing technologies that can solve some problems do not have the pertinence of needs, so the feasibility is poor, and it is a rigid application;

(3) The use of sprinkler products and devices developed to solve other problems cannot achieve the combination of the design purpose of choosing aluminum alloy reticulated shell structure roofs for public buildings and the protection of structural safety under fire.

SUMMARY OF THE INVENTION

In view of the situation and the existing deficiencies of the prior art, the utility model provides an external spray reinforced fireproof panel joint structure, which is suitable for the current engineering needs and the design purpose of the aluminum alloy reticulated shell structure for the building. It is an integrated external spray-reinforced fire-proof panel-type node structure that relies on the same-strength panel-type node to cool down the structure by the reverse spray of water mist on the outgoing node plane.

The utility model overcomes the deficiencies that the prior art can not meet the needs of the public buildings to obtain the appearance of the aluminum alloy metal texture, the aesthetic feeling of the dense triangular grid of the ceiling of the indoor reticulated shell structure, and to meet the requirements of the curved surface shape of the reticulated shell structure.

The utility model can satisfy the architect's pursuit of the appearance of the aluminum alloy metal texture without affecting the regular appearance of the triangular grid of the indoor ceiling, and at the same time provide an integrated extension and reinforcement type fire-proof plate type node structure, which is especially suitable for processing into beams Plate joints with a height of not more than 250mm are used in construction projects.

When the retractable composite sprinkler is not in use, it is hidden in the hollow area of the node formed by the upper and lower node discs and the I-shaped section beam; when in use, under the action of water pressure, the curved bottom shell is impacted by the pressurized water, which drives the outer casing The pipe slides along the ridge set on the surface of the inner pipe, and the top falls off the node plate cover and protrudes under the lower node plate. The outer surface and then the entire panel joint are insulated and cooled. And it can adapt to the changes in the surface shape of the reticulated shell structure, such as: the upper and lower node disks used in the cylindrical reticulated shell are slightly arched; the grid force optimization or grid transition to the support position caused by the adjacent beams extending in all directions The included angles between the components are different, etc. When used at the support of the reticulated shell with the boundary landing, in order to save, even only 1/2 of the nozzle body can be manufactured, that is, only 4 nozzles are reserved for the half-plate node at the support (the upper and lower half are usually used at the support. The node disc clamps the plate-type node structure bolted with four chamfered I-beams and bolted to the steel support at the same time) for fire protection. When the lower node disc is selected, the strength loss caused by the opening is compensated by a simple method of slightly thickening. The lower node plate cover can be selected to be the same color as the aluminum alloy, or other functions and colors can be added according to the needs of the building, and the traces of fire protection products can not be noticed at all. Therefore, it is a brand new one to provide a concealed integrated external spray reinforced fireproof panel joint structure.

The integrated external spray-reinforced fire-proof panel-type node structure obtained by applying this technical solution and the cylindrical, spherical, and free-form surface reticulated shell structure roof including these fire-proof panel-type nodes realize the building's demand for metal texture and grid look and feel. At the same time, it conforms to the material characteristics of aluminum alloy structure with corrosion resistance. Relying on water mist technology, it can realize the fire protection without dead angle of the reticulated shell structure of suitable specifications while the water consumption is less, and the social, economic and safety benefits are obvious. The utility model provides reference for the formulation and revision of relevant fire protection standards, the removal of fire barriers in the process of popularizing the aluminum alloy reticulated shell structure, and the structural fire protection transformation in the current aluminum alloy engineering.

In order to achieve the above purpose, the technical scheme adopted by the present utility model is: an external spray reinforced fireproof panel-type node structure, which includes a panel-type node and the water supply pipe, and the panel-type node includes a node disk, a bolt, and a chamfered I-shape. beam;

The node disk includes an upper node disk and a lower node disk;

The chamfered ends of the six chamfered I-beams are arranged at intervals between the upper node plate and the lower node plate. The chamfered upper flanges of the six chamfered I-beams and the upper node plate are fixed together by several bolts. The chamfered lower flange of the corner I-beam and the lower node plate are fixed together by several bolts, and the other ends of the six chamfered I-beams extend out of the upper node plate and the lower node plate, and it is characterized in that: it also includes a composite nozzle, Lower node disk cover;

The center of the lower node plate is provided with a lower node plate hole;

The composite nozzle includes an inner pipe, a gasket, an outer sleeve, a nozzle body, and six nozzles;

The washer is sleeved into the lower end of the hollow circular tube I of the inner tube, the ridge on the side wall of the hollow circular tube I is located in the rectangular vertical groove I of the washer, and the tube wall thickening ring is arranged on the hollow circular tube I and at the lower end of the washer, The pipe wall thickening ring and the hollow round pipe I are centrally and tightly welded, and the sliding gasket contacts and bonds with the pipe wall thickening ring;

Insert the end of the hollow round tube I fixed with the thickening ring of the tube wall into the hollow round tube II of the outer casing, and insert the nozzle reducing ring into the upper end of the hollow round tube I and the upper end of the hollow round tube II. The ridge of the side wall of the pipe I is located in the rectangular vertical groove II of the pipe mouth reducing ring;

The water supply pipe is fixed at the angle between the chamfered upper flange of a chamfered I-beam of the plate node and the rectangular web, and the elbow end of the water supply pipe is screwed and fixed with the upper end of the hollow circular pipe I of the composite nozzle;

The six nozzles are sequentially installed in the six water outlet holes of the hollow positive cone pipe of the nozzle body;

The lower end of the hollow circular tube II of the outer casing is screwed with the inner ring of the upper ring of the nozzle body, and the nozzle body is rotated and adjusted so that the axes of the six nozzles are coplanar with the six rectangular webs in sequence according to the setting positions of the water outlet holes;

The lower node plate cover is covered on the hole of the lower node plate from the lower surface of the lower node plate;

The nozzle body together with the outer sleeve can touch the lower node plate cover and protrude through the node plate hole of the lower node plate to the bottom of the lower node plate. Close contact;

Or the nozzle body together with the outer casing can be accommodated in the hollow node region formed by the upper node plate, the lower node plate and the six chamfered I-beams.

The beneficial effects of the present utility model are:

The beneficial effects of the utility model are as follows: the external spray reinforced fire-proof panel-type node structure of the utility model not only makes up for the poor fire resistance of the aluminum alloy structure, but also solves the problem of public buildings reflecting the metal texture of aluminum alloy and appreciating the regular and dense triangular mesh of the indoor ceiling. The requirements of grid aesthetics, the fire protection method has strong concealment, the use of water mist nozzles has high reliability and low cost, and is equivalent to the structural strength of conventional plate joints. It is suitable for aluminum alloy reticulated shell structures with different curved surfaces, especially for beam height Aluminium alloy plate joint structure with a shape of cross section beam, hollow rectangular box beam) not more than 250mm, especially easy maintenance and component replacement.

Through the rotatable adjustment connection between the upper ring and the outer sleeve, the nozzles with different orientations can be directed to the vertical centerline of the edge surface of the rectangular web in different directions in turn, and then face the corresponding chamfered bottom after projecting out of the lower node plate hole during operation. The outer surface of the flange is sprayed along the centerline of the elongation direction of the chamfered I-beam, which preferentially protects the surface of the beam and the node disk member facing the fire source, and then wraps the entire plate joint in water mist.

Similarly, the setting of the convex ridge and the rectangular vertical groove II of the nozzle reduction ring is also to prevent the nozzle body from rotating itself during the extension process. The nozzle reduction ring has a certain height to prevent the nozzle body and the outer casing from being different during the extension process. axis.

Through the design of the curved bottom shell, the impact area of the water under pressure is effectively increased, and the transition to the nozzle is smooth, reducing the pressure loss.

The design of the gasket has both the function of maintaining the telescopic position of the outer casing and the function of water sealing during the expansion and contraction process, and the tighter the contact with the nozzle shrinking ring under the condition of higher water pressure, the better the sealing effect.

Through the design of the hollow positive cone tube, the purpose of spraying water mist on the surface of the plate node member facing the fire source after installing the nozzle is realized to provide fire protection. According to the length of the chamfered I-beam to be protected, hollow positive cone tubes with different cone angles are selected. , while satisfying the fire protection of suitable beam-height slab joint members without dead angle, it also maximizes the efficient use of water resources.

Through the design that the thickness of the lower node plate is slightly larger than that of the upper node plate, the structural strength loss caused by opening the lower node plate hole is compensated.

The utility model realizes the heat insulation and cooling protection of the hollow node domain formed by the node disk and the six chamfered I-beams and the triangular mesh formed by the chamfered I-beams between adjacent nodes, and is suitable for the aluminum alloy plate joints that need to solve the problem in a targeted manner. The various shapes and beam specifications of the aluminum alloy reticulated shell structure for fire protection problems conform to the general trend of the vigorous construction of aluminum alloy reticulated shell structures, and can also be combined with the current intelligence and informationization of fire protection facilities to provide fire protection for the components of new structures. The fire protection renovation of the design, reconstruction and expansion of the structure, and the formulation and revision of relevant standards provide a reference, which has huge social, economic and public safety benefits, and is conducive to improving the development level of my country's spatial structure.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structure exploded view of the utility model;

3 is a schematic diagram of the position and structure of the water supply pipe, the composite nozzle and the lower node plate of the present invention;

Figure 4 is a cutaway view of parts A and B of the structure of Figure 3;

Fig. 5 is the structure working diagram of the utility model;

FIG. 6 is a cross-sectional view of part C of the structure of FIG. 5 .

Detailed ways

As shown in Figures 1 to 6, an external spray reinforced fireproof panel node structure includes a panel node 1, a water supply pipe 2, a composite nozzle 3, and a lower node disk cover 4;

The plate node 1 includes a node disk 1-1, a bolt 1-2, and a chamfered I-beam 1-3.

The node plate 1-1 includes an upper node plate 1-1-1 and a lower node plate 1-1-2, and a lower node plate hole 1-1-2-1 is provided in the center of the lower node plate 1-1-2.

The chamfered I-beam 1-3 includes a chamfered upper flange 1-3-1, a rectangular web 1-3-2, and a chamfered lower flange 1-3-3;

The composite nozzle 3 includes an inner pipe 3-1, a gasket 3-2, an outer sleeve 3-3, a nozzle body 3-4, and six nozzles 3-5;

The inner tube 3-1 consists of a hollow circular tube I3-1-1 with a raised ridge 3-1-3 along the length of the tube and a tube wall thickening ring 3-1 coaxially connected to its one end face. -2 composition, the hollow tube I3-1-1, the tube wall thickening ring 3-1-2, the inner diameter of the water supply pipe 2 are equal, and the outer diameter of the tube wall thickening ring 3-1-2 is slightly larger than that of the hollow tube I3- The sum of the outer diameter of 1-1 and the thickness of the ridge 3-1-3.

The washer 3-2 is a hollow ring, its inner diameter is equal to the outer diameter of the hollow tube I3-1-1, and its outer diameter is equal to the outer diameter of the pipe wall thickening ring 3-1-2, and the inner ring surface is set. There is a rectangular vertical groove I3-2-1 of full height, and the thickness and width of the rectangular vertical groove I3-2-1 are equal to those of the raised ridge 3-1-3.

The outer casing 3-3 is composed of a hollow circular tube II3-3-1 and a pipe orifice reducing ring 3-3-2 coaxially connected to one end face thereof. The inner diameter of the hollow circular tube II3-3-1 is the same as that of the gasket 3. The outer diameter of -2 is equal, the inner diameter of the orifice reducing ring 3-3-2 is equal to the outer diameter of the hollow circular tube I3-1-1, and its outer diameter is equal to the outer diameter of the hollow circular tube II3-3-1. The inner ring surface is provided with a rectangular vertical groove II3-3-2-1 of full height, and the thickness and width of the rectangular vertical groove II3-3-2-1 are equal to those of the ridge 3-1-3.

The nozzle body 3-4 is in the shape of a flying saucer, and is composed of an upper ring 3-4-1, a hollow positive cone tube 3-4-2, and an arc bottom shell 3-4-3. The inner diameter is equal to the outer diameter of the hollow circular tube II3-3-1, and the outer diameter is larger than the outer diameter of the hollow circular tube II3-3-1 and equal to the small diameter of the hollow positive tapered tube 3-4-2. The hollow positive tapered tube 3- The diameter of the large mouth of 4-2 is equal to the diameter of the cambered bottom shell 3-4-3, the thickness of the upper ring 3-4-1, the hollow positive cone tube 3-4-2, and the cambered bottom shell 3-4-3 They are equal and are connected by welding in sequence. Six water outlet holes 3-4-2-1 are set on the cross section of the hollow positive cone tube 3-4-2 at the height of the middle of the cone wall. The setting position of each water outlet hole 3-4-2-1 Make sure that the axes of the nozzles 3-5 connected to it are in turn coplanar with the rectangular webs 1-3-2 of the six chamfered I-beams 1-3 of the plate node 1.

According to the positions of the prefabricated bolt holes, the upper node plate 1-1-1 of the node plate 1-1 and the chamfered upper flange 1-3-1 bolt holes of the six chamfered I-beams 1-3 are all centered, Align the lower node plate 1-1-2 of the node plate 1-1 with the chamfered lower flange 1-3-3 bolt holes of the six chamfered I-beams 1-3, and ensure that the upper node plate 1-1 -1 Center the lower node plate 1-1-2, insert each bolt 1-2 through the two prefabricated bolt holes that have been centered in turn, and then tighten each bolt 1-2 in turn.

At the end of an inner tube 3-1 without the tube wall thickening ring 3-1-2, align the raised ridge 3-1-3 with a rectangular vertical groove I3-2-1 of the washer 3-2 , and then slide the gasket 3-2 through the outer surface of the inner tube 3-1 along the ridge 3-1-3 until it contacts and bonds with the surface of the tube wall thickening ring 3-1-2;

Place the end of the outer casing 3-3 without the orifice reducing ring 3-3-2 to the end of the upper inner pipe 3-1 without the pipe wall thickening ring 3-1-2, and slide it into place, Then rotate and adjust the outer sleeve 3-3 until the rectangular vertical groove II 3-3-2-1 of the nozzle reducing ring 3-3-2 is aligned with the above-mentioned convex ridge 3-1-3 of the inner pipe 3-1, and continue along the convex The ridge 3-1-3 slides the outer sleeve 3-3 a little, so that the end of the inner tube 3-1 without the tube wall thickening ring 3-1-2 protrudes a little from the tube mouth reducing ring 3-3-2, and at the same time The gasket 3-2 and the pipe wall thickening ring 3-1-2 are inserted into the end of the outer sleeve 3-3 without the pipe opening reducing ring 3-3-2 to a certain depth.

Fix the water supply pipe 2 at the angle between the chamfered upper flange 1-3-1 of a chamfered I-beam 1-3 of the plate node 1 and the rectangular web 1-3-2, and make the elbow end 2-1 is vertically downward, its center line coincides with the line connecting the centers of the upper node plate 1-1-1 and the lower node plate 1-1-2, and the elbow end 2-1 and the inner pipe 3-1 are not separated The end connection of the pipe wall thickening ring 3-1-2;

The six nozzles 3-5 are sequentially installed on the six water outlet holes 3-4-2-1 of the nozzle body 3-4 hollow positive cone pipe 3-4-2;

Thread the inner ring of the upper ring 3-4-1 of the nozzle body 3-4 and the end of the outer sleeve 3-3 without the orifice reducing ring 3-3-2, and rotate and adjust the nozzle body 3-4 so that the six The axes of the nozzles 3-5 are coplanar with the six rectangular webs 1-3-2 in sequence according to the arrangement positions of the water outlet holes 3-4-2-1.

The nozzle body 3-4 together with the outer casing 3-3 is accommodated in the hollow node area formed by the upper node plate 1-1-1, the lower node plate 1-1-2 and the six chamfered I-beams 1-3;

Put the lower node plate cover 4 on the lower node plate hole 1-1-2-1 from the lower surface of the lower node plate 1-1-2.

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

Further, the nozzle reducing ring 3-3-2 should have a certain height;

Further, the diameter of the lower node plate hole 1-1-2-1 is larger than the outer contour of the nozzle body 3-4;

Further, the thickness of the lower node plate 1-1-2 is determined according to the design requirements, and must be greater than the thickness of the upper node plate 1-1-1;

Further, the cone angle of the hollow positive tapered tube 3-4-2 is determined according to the length of the chamfered I-beam 1-3 to be protected, generally between 15° and 45°;

Further, the size of the droplets sprayed by the nozzles 3-5 meets the requirements of the national standard for the particle size of water spray or fine water mist, that is, the particle size of the droplets is below 1.0 mm.

A method for using an external spray reinforced fireproof panel joint structure, the steps are as follows:

The first step is to determine that a fire has occurred;

The second step is to start the pressurized water supply system for the water supply pipe 2. The water flows from the inner pipe 3-1 through the outer casing 3-3 into the nozzle body 3-4 and impacts the arc bottom shell 3-4-3. Next, the nozzle body 3-4 drives the outer casing 3-3 to slide along the ridge 3-1-3, and the arc bottom casing 3-4-3 touches the lower node plate cover 4 to make it fall off; the outer casing 3-3 continues to slide along the The ridge 3-1-3 slides until the surface of the orifice reducing ring 3-3-2 contacts the surface of the gasket 3-2. At this time, the water mist is sprayed out from the six nozzles 3-5 at full pressure, and the plate joint 1 is replaced by six nozzles. The lower surface of the chamfered lower flange 1-3-3 of the chamfered I-beam 1-3 starts and is quickly and completely wrapped in the water mist, so as to achieve the overall thermal insulation and cooling effect of the plate joint 1;

The third step is to judge that the fire has been extinguished, and then continue to provide pressurized water for the water supply pipe 2 for 5-10 minutes, close the water supply system, and ensure that the aluminum alloy components have cooled to room temperature;

The fourth step, after the water in the nozzle body 3-4 completely flows out, push the nozzle body 3-4 to drive the outer casing 3-3 to slide along the ridge 3-1-3 until it is stored and reset;

Step 5: Recover the lower node plate cover 4 from the lower surface of the lower node plate 1-1-2 on the lower node plate hole 1-1-2-1, and the plate node 1 returns to 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