Fireproof structure for smoke prevention and exhaust air pipe and mounting method of fireproof structure

Abstract

The invention discloses a fireproof structure for a smoke prevention and exhaust air pipe and an installation method of the fireproof structure, and belongs to the technical field of fire fighting equipment. The fireproof structure comprises an upper fireproof plate, a lower fireproof plate and two vertical fireproof plates, and the periphery of the smoke prevention and exhaust air pipe is jointly sleeved with the upper fireproof plate, the lower fireproof plate and the two vertical fireproof plates; a water storage tank with a heat conduction function is arranged at the top end of the upper fireproof plate, the top end of the water storage tank is communicated with an air discharging pipe with an electromagnetic valve and a water adding pipe, the periphery of the middle of the water storage tank is communicated with two communicating pipes with electromagnetic valves, and one communicating pipe is communicated with a corrugated pipe. The top end of the water adding pipe, the side face of the corrugated pipe and the side face of the other communicating pipe are fixedly connected with flanges facilitating combination and connection, and the side face of the water storage tank is further communicated with a sewer pipe with an electromagnetic valve. According to the fireproof structure for the smoke prevention and exhaust air pipe and the mounting method of the fireproof structure, the good fireproof and heat insulation effects are achieved, the upper portion can be cooled, and the fireproof effect is further improved.

Description

Technical Field

[0001] The invention belongs to the technical field of fire-fighting equipment, and in particular to a fire-proof structure for a smoke exhaust air duct and an installation method thereof. Background Art

[0002] The smoke exhaust system has two main functions: first, smoke prevention facilities are installed in evacuation passages and crowded areas to facilitate the safe evacuation of personnel; second, the toxic high-temperature smoke generated at the fire scene is discharged in time to eliminate obstacles to fire fighting. For safety, the smoke exhaust duct will be equipped with a fireproof structure, but heat will accumulate at the top without special treatment, which will affect the fire prevention effect.

[0003] After searching, a Chinese patent document (authorization announcement number CN118623104B) discloses a fireproof structure for a smoke exhaust duct and an installation method thereof, which relates to the field of fire protection and smoke exhaust technology, including a smoke exhaust duct, an insulation pipe, a fireproof pipe and a fixing frame, wherein the insulation pipe is in a square tube shape, the inner diameter of the insulation pipe is the same as the outer diameter of the smoke exhaust duct, the insulation pipe is installed around the outer side of the smoke exhaust duct, the fireproof pipe is in a square tube shape, the fireproof pipe is installed around the outer side of the insulation pipe, the inner side surface of the fireproof pipe is set to a wave shape, which is used to reduce the contact surface with the insulation pipe and reduce the heat conduction efficiency, the fireproof pipe includes a top plate, a side plate and a bottom plate, the fixing frame is arranged on the outer side of the fireproof pipe, the fixing frame is used to fix the shape of the fireproof pipe, and the fixing frame is used to support the fireproof pipe; the problem of the prior art that the heat resistance and fireproofing ability of the smoke exhaust duct is not improved much, the fireproofing performance of the fireproof pipe itself is improved, and the heat resistance and fireproofing ability of the smoke exhaust duct is greatly improved. For safety reasons, smoke exhaust ducts are equipped with fireproof structures, but heat will accumulate at the top and without special treatment, the fireproofing effect will be affected. Summary of the invention

[0004] The object of the present invention is to provide a fireproof structure for a smoke exhaust duct and an installation method thereof, so as to solve the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fireproof structure for a smoke exhaust duct, comprising an upper fireproof plate, a lower fireproof plate and two vertical fireproof plates, the upper fireproof plate, the lower fireproof plate and the two vertical fireproof plates are collectively sleeved on the outer periphery of the smoke exhaust duct, a water storage tank with a heat conduction function is arranged at the top of the upper fireproof plate, the top of the water storage tank is connected with an air release pipe and a water supply pipe with a solenoid valve, the outer periphery of the middle part of the water storage tank is connected with two connecting pipes with solenoid valves, one of the connecting pipes is connected with a bellows, the top of the water supply pipe, the side of the bellows and the side of the other connecting pipe are all fixedly connected with flanges for easy assembly and connection, and the side of the water storage tank is also connected with a downpipe with a solenoid valve; The outer peripheries of the upper fireproof board, the lower fireproof board and the two vertical fireproof boards are provided with two L-shaped limit plates, the limit plates are arranged as a hollow structure, the inner cavity of the limit plates is provided with two extension plates arranged in different directions, a convex block is welded on the side of one of the extension plates, and a slot adapted to the convex block is opened on the side of the other extension plate; The upper limiting plate is also connected to an anti-seismic bracket assembly.

[0006] As a preferred embodiment, the upper fireproof board, the lower fireproof board and the two vertical fireproof boards all include a waterproof and thermal insulation layer, a heat insulation layer and a strength layer. The heat insulation layer is arranged between the waterproof and thermal insulation layer and the strength layer, and the waterproof and thermal insulation layer is located on the side close to the smoke exhaust duct.

[0007] As a preferred embodiment, the waterproof and heat-insulating layer is set as heat-insulating cotton, the heat-insulating layer is set as perlite board, and the strength layer is set as stainless steel plate.

[0008] As a preferred embodiment, the water supply pipe, the downpipe, the corrugated pipe and the connecting pipe are all made of heat insulating materials.

[0009] As a preferred embodiment, a threaded hole is provided on the side of the limiting plate, a fixed threaded rod is threadedly connected to the threaded hole, and a plurality of round holes for the fixed threaded rod to pass through are provided on the side of the extension plate.

[0010] As a preferred embodiment, the earthquake-resistant support assembly comprises: The lower support plate is detachably connected to the limit plate through a plurality of bolts; The upper support plate is detachably connected to the ceiling via a plurality of expansion bolts; Two lifting ears are respectively welded to the adjacent side surfaces of the lower supporting plate and the upper supporting plate. The two lifting ears are rotatably connected with movable plates through rotating shafts, and a spring is fixedly connected between the two movable plates.

[0011] As a preferred embodiment, two side support plates are welded to the outer periphery of the two movable plates, and the bottom ends of the two upper side support plates are commonly connected to a hollow plate located at the outer periphery of the two movable plates and the spring.

[0012] As a preferred embodiment, a vertically arranged safety rope is fixedly connected between two side support plates on the same side.

[0013] As a preferred embodiment, the outer periphery of the extension plate is also connected with a close-fitting plate for supporting the smoke exhaust duct.

[0014] A method for installing a fireproof structure for a smoke exhaust duct comprises the following steps: Step 1. Preparation: Install the smoke exhaust duct, and place the upper fireproof board, lower fireproof board and two vertical fireproof boards; Step 2: Installation: Put the two limit plates in place, and other staff members pull out the extension plate, insert the protrusion into the slot, and turn the fixed threaded rod to fix it, so as to fix the upper fireproof board, the lower fireproof board and the two vertical fireproof boards; Step 3: Assembly: Install the upper support plate, and detachably connect the lower support plate and the limit plate to achieve indirect lifting of the smoke exhaust duct.

[0015] Compared with the prior art, the technical effects and advantages of the present invention are as follows: The fireproof structure for smoke exhaust duct and the installation method thereof, the upper fireproof plate, the lower fireproof plate and the two vertical fireproof plates are collectively sleeved on the outer periphery of the smoke exhaust duct, and the smoke exhaust duct is fully wrapped and protected. For the hotter upper fireproof plate, a water storage tank with a heat conduction function is arranged on the upper fireproof plate, and water is arranged in the water storage tank for heat conduction and heat dissipation, thereby indirectly improving the fire prevention effect. Adjacent water storage tanks are connected. If the temperatures of smoke exhaust ducts at different positions are different, the water evaporates when encountering high heat, and after the liquid level becomes low, the high-level water in the water storage tanks at other positions will flow down with gravity, which not only realizes the flow of water, but also drives the heat to diffuse and conduct. The fireproof structure for smoke exhaust duct and the installation method thereof, the upper fireproof board, the lower fireproof board and the two vertical fireproof boards all include a waterproof and heat-insulating layer, a heat-insulating layer and a strength layer, the outer stainless steel plate has a certain strength, not only plays a protective role from the outer layer, but also plays a fireproof role, the pearlite plate in the middle layer plays a heat-insulating role, reduces the conduction of heat, and plays a fireproof role, the inner layer of thermal insulation cotton plays a waterproof and heat-insulating role, and plays a protective role; The fireproof structure and installation method for smoke exhaust ducts can realize hoisting and fixing with the anti-seismic bracket assembly. If an earthquake or external force occurs, the rotation design of the two lifting ears and the movable plate can play a protective role. The contraction of the spring changes the upper movement of the lower support plate, which can also play a certain protective role. If the external force is large, the safety rope may break, and the spring at this time plays a complete telescopic buffer protection role. The fireproof structure for smoke exhaust duct and the installation method thereof not only have good fireproofing and heat insulation effects, but also can cool down the upper part, further improving the fireproofing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the combined state of the present invention; Figure 3 A partial cross-sectional view of an upper fireproof board of the present invention; Figure 4 It is a structural schematic diagram of the connecting pipe of the present invention; Figure 5It is a front view of the upper fireproof board, the lower fireproof board and two vertical fireproof boards of the present invention; Figure 6 It is a structural schematic diagram of the seismic support assembly of the present invention; Figure 7 It is a cross-sectional view of the movable plate and the hollow plate of the present invention; Figure 8 It is a front view of the movable plate and the lifting lug of the present invention; Fig. 9 It is a structural schematic diagram of the limiting plate of the present invention; Fig.10 It is the front view of the limiting plate of the present invention.

[0017] Description of reference numerals: In the figure: 1. Upper fireproof board; 2. Lower fireproof board; 3. Vertical fireproof board; 4. Water storage tank; 5. Water supply pipe; 6. Connecting pipe; 7. Bellows; 8. Flange; 9. Downpipe; 10. Limit plate; 11. Extension plate; 12. Bump; 13. Anti-seismic bracket assembly; 14. Close plate; 15. Fixed threaded rod; 101, waterproof and thermal insulation layer; 102, thermal insulation layer; 103, strength layer; 131. Lower support plate; 132. Upper support plate; 133. Lifting ear; 134. Movable plate; 135. Spring; 136. Side support plate; 137. Hollow plate; 138. Safety rope. DETAILED DESCRIPTION

[0018] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0019] The connection method can be bonding, welding, bolt connection and other existing methods, depending on actual needs.

[0020] See also Figures 1 to 10The present embodiment comprises an upper fireproof board 1, a lower fireproof board 2 and two vertical fireproof boards 3, which are collectively sleeved on the outer periphery of the smoke exhaust duct to fully wrap and protect the smoke exhaust duct. A water storage tank 4 with a heat conduction function is arranged on the top of the upper fireproof board 1. Water is arranged in the water storage tank. For the hotter upper fireproof board 1, it can conduct heat well and dissipate heat, thereby indirectly improving the fire prevention effect. The top of the water storage tank 4 is connected with an air release pipe and a water supply pipe 5 with a solenoid valve, and the outer periphery of the middle part of the water storage tank 4 is connected with a There are two connecting pipes 6 with solenoid valves, one of which is connected to a bellows 7. The top of the water supply pipe 5, the side of the bellows 7 and the side of the other connecting pipe 6 are fixedly connected with flanges 8 for easy assembly and connection. Adjacent water tanks are connected. If the temperatures of the smoke exhaust ducts at different positions are different, the water evaporates when it encounters high heat. After the liquid level becomes low, the high-level water in the water tanks at other positions will flow down with gravity, which not only realizes the flow of water, but also drives the heat to diffuse and conduct. The side of the water tank 4 is also connected to a downpipe 9 with a solenoid valve; The outer peripheries of the upper fireproof board 1, the lower fireproof board 2 and the two vertical fireproof boards 3 are shared by two L-shaped limit plates 10, and the limit plates 10 are arranged as a hollow structure. The inner cavity of the limit plate 10 is provided with two extension plates 11 arranged in opposite directions, and the outer periphery of the extension plate 11 is also connected with a close-fitting plate 14 for resisting the smoke exhaust duct, one of the extension plates 11 is welded with a protrusion 12 on the side, and the other extension plate 11 is provided with a slot adapted to the protrusion 12 on the side, a threaded hole is provided on the side of the limit plate 10, a fixed threaded rod 15 is threadedly connected to the threaded hole, and a plurality of circular holes for the fixed threaded rod 15 to pass through are provided on the side of the extension plate 11.

[0021] The upper fireproof board 1, the lower fireproof board 2 and the two vertical fireproof boards 3 all include a waterproof and thermal insulation layer 101, a heat insulation layer 102 and a strength layer 103. The heat insulation layer 102 is arranged between the waterproof and thermal insulation layer 101 and the strength layer 103, and the waterproof and thermal insulation layer 101 is located on the side close to the smoke exhaust duct. The waterproof and thermal insulation layer 101 is set as thermal insulation cotton, the heat insulation layer 102 is set as perlite board, and the strength layer 103 is set as stainless steel plate. The outer stainless steel plate has a certain strength, which not only plays a protective role from the outer layer, but also can play a fire prevention role.

[0022] The water supply pipe 5, the down pipe 9, the corrugated pipe 7 and the connecting pipe 6 are all made of heat insulating materials.

[0023] The upper limiting plate 10 is also connected to an anti-seismic support assembly 13, and the anti-seismic support assembly 13 includes: The lower support plate 131 is detachably connected to the limiting plate 10 via a plurality of bolts; The upper support plate 132 is detachably connected to the ceiling via a plurality of expansion bolts; The two lifting ears 133 are respectively welded to the adjacent sides of the lower support plate 131 and the upper support plate 132, and the two lifting ears 133 are rotatably connected to the movable plate 134 through a rotating shaft, and a spring 135 is fixedly connected between the two movable plates 134. Two side support plates 136 are welded to the outer periphery of the two movable plates 134, and the bottom ends of the two upper side support plates 136 are commonly connected to a hollow plate 137 located at the outer periphery of the two movable plates 134 and the spring 135, and a vertically arranged safety rope 138 is fixedly connected between the two side support plates 136 on the same side. The seismic support assembly 13 can be hoisted and fixed. If an earthquake or external force occurs, the rotation design of the two lifting ears 133 and the movable plate 134 can play a protective role. The contraction of the spring 135 and the upward movement of the lower support plate 131 can also play a certain protective role. If the external force is large, the safety rope 138 may break, and the spring 135 at this time plays a complete telescopic buffering protection.

[0024] A method for installing a fireproof structure for a smoke exhaust duct comprises the following steps: Step 1: Preparation: Install the smoke exhaust duct, and place the upper fireproof board 1, the lower fireproof board 2 and the two vertical fireproof boards 3; Step 2, installation: put the two limit plates 10 in place, other staff pull out the extension plate 11, insert the protrusion 12 into the slot, rotate the fixing threaded rod 15 to fix it, and fix the upper fireproof board 1, the lower fireproof board 2 and the two vertical fireproof boards 3; Step 3: Assembly: Install the upper support plate 132, and detachably connect the lower support plate 131 to the limiting plate 10 to achieve indirect hoisting of the smoke exhaust duct.

[0025] The solenoid valve is a prior art, and heat-resistant equipment is preferably used. The working principle, size and model are irrelevant to the function of the present application, so no further description is given. The control method of the present invention is controlled by a controller, and the control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field, and the present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0026] It should be noted that, in this document, relational terms such as one and two are merely used to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any actual relationship or order between these entities or operations.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fireproof structure for a smoke exhaust duct, comprising an upper fireproof plate (1), a lower fireproof plate (2) and two vertical fireproof plates (3), characterized in that: The upper fireproof plate (1), the lower fireproof plate (2) and the two vertical fireproof plates (3) are collectively sleeved on the outer periphery of the smoke exhaust duct; a water storage tank (4) having a heat conduction function is arranged at the top of the upper fireproof plate (1); the top of the water storage tank (4) is connected to an air release pipe and a water supply pipe (5) with a solenoid valve; the outer periphery of the middle part of the water storage tank (4) is connected to two connecting pipes (6) with solenoid valves, one of the connecting pipes (6) is connected to a bellows (7); the top of the water supply pipe (5), the side of the bellows (7) and the side of the other connecting pipe (6) are all fixedly connected to a flange (8) for facilitating combined connection; the side of the water storage tank (4) is also connected to a downpipe (9) with a solenoid valve; The outer peripheries of the upper fireproof plate (1), the lower fireproof plate (2) and the two vertical fireproof plates (3) are provided with two L-shaped limit plates (10), the limit plates (10) being arranged as a hollow structure, the inner cavity of the limit plates (10) being provided with two extension plates (11) arranged in different directions, the side surface of one of the extension plates (11) being welded with a protrusion (12), and the side surface of the other extension plate (11) being provided with a slot adapted to the protrusion (12); The upper limiting plate (10) is also connected to an anti-seismic support assembly (13).

2. A fireproof structure for smoke exhaust duct according to claim 1, characterized in that: The upper fireproof board (1), the lower fireproof board (2) and the two vertical fireproof boards (3) all comprise a waterproof and thermal insulation layer (101), a heat insulation layer (102) and a strength layer (103); the heat insulation layer (102) is arranged between the waterproof and thermal insulation layer (101) and the strength layer (103); and the waterproof and thermal insulation layer (101) is located on a side close to the smoke exhaust duct.

3. A fireproof structure for smoke exhaust duct according to claim 2, characterized in that: The waterproof thermal insulation layer (101) is configured as thermal insulation cotton, the heat insulation layer (102) is configured as a pearlite board, and the strength layer (103) is configured as a stainless steel plate.

4. A fireproof structure for smoke exhaust duct according to claim 1, characterized in that: The water supply pipe (5), the water discharge pipe (9), the corrugated pipe (7) and the connecting pipe (6) are all made of heat-insulating materials.

5. The fireproof structure for smoke exhaust duct according to claim 1, characterized in that: A threaded hole is provided on the side of the limiting plate (10), and a fixed threaded rod (15) is threadedly connected to the threaded hole. A plurality of circular holes for the fixed threaded rod (15) to pass through are provided on the side of the extension plate (11).

6. The fireproof structure for smoke exhaust duct according to claim 1, characterized in that: The anti-seismic support assembly (13) comprises: The lower support plate (131) is detachably connected to the limiting plate (10) via a plurality of bolts; An upper support plate (132) is detachably connected to the ceiling via a plurality of expansion bolts; Two lifting ears (133) are respectively welded to adjacent side surfaces of the lower support plate (131) and the upper support plate (132); the two lifting ears (133) are rotatably connected to a movable plate (134) via a rotating shaft; and a spring (135) is fixedly connected between the two movable plates (134).

7. A fireproof structure for smoke exhaust duct according to claim 6, characterized in that: Two side support plates (136) are welded to the outer peripheries of the two movable plates (134), and the bottom ends of the two upper side support plates (136) are commonly connected to a hollow plate (137) located on the outer peripheries of the two movable plates (134) and the spring (135).

8. A fireproof structure for smoke exhaust duct according to claim 7, characterized in that: A vertically arranged safety rope (138) is fixedly connected between the two side support plates (136) on the same side.

9. The fireproof structure for smoke exhaust duct according to claim 1, characterized in that: The outer periphery of the extension plate (11) is also connected to a close-fitting plate (14) for abutting against the smoke exhaust duct.

10. A method for installing a fireproof structure for a smoke exhaust duct, used for installing a fireproof structure for a smoke exhaust duct according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Preparation: Install the smoke exhaust duct, and place the upper fireproof board (1), the lower fireproof board (2) and two vertical fireproof boards (3); Step 2, installation: put the two limit plates (10) in place, and other staff members pull out the extension plate (11), insert the protrusion (12) into the slot, and rotate the fixing threaded rod (15) to fix it, so as to fix the upper fireproof plate (1), the lower fireproof plate (2) and the two vertical fireproof plates (3); Step 3: Assembly: Install the upper support plate (132) and detachably connect the lower support plate (131) to the limit plate (10) to achieve indirect hanging of the smoke exhaust duct.

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