Fire-fighting smoke exhaust pipeline

Abstract

The utility model relates to the technical field of fire-fighting equipment, in particular to a fire-fighting smoke exhaust pipeline, which comprises a honeycomb structure pipeline main body, a corrugated structure pipeline main body, a suspender, a hanger, a flange and a connecting device. The honeycomb structure pipeline body comprises a honeycomb-shaped inner layer, a heat insulation middle layer and an anti-impact outer layer, and the composite interlayer has the flow guiding, heat insulation and anti-impact effects. The outer layer of the corrugated structure pipeline body is made of stainless steel, the inner layer is made of ceramic fibers, corrosion resistance and heat insulation are both considered, and the corrugated structure of the section can relieve the thermal expansion problem of the pipeline. A flange connected with the honeycomb structure pipeline body and the corrugated structure pipeline body is provided with a sealing groove used for being filled with a self-expansion fireproof sealing strip, and the sealing strip expands at the high temperature and supplements cracks possibly appearing at the inner connecting position of the flange.

Description

TECHNICAL FIELD

[0001] The utility model relates to fire fighting equipment technical field, concretely relates to a fire smoke exhaust pipeline. BACKGROUND

[0002] The fire smoke exhaust pipeline is the key component of the building fire fighting system, and its core function is to timely exhaust the smoke and toxic gas gathered inside the building when the fire occurs. The system realizes directional dredging through mechanical smoke exhaust device or natural ventilation design, effectively controls the smoke diffusion, reduces the risk of suffocation of personnel, and at the same time maintains the recognition degree and availability of the evacuation path. By ensuring that the high-temperature smoke is quickly exhausted outside through the preset channel, the key time window is obtained for personnel evacuation and fire rescue.

[0003] A patent document with publication number CN111442155A discloses a novel fire smoke exhaust pipeline, which comprises a pipeline main body, a flange one, a flange two, a pipeline windproof valve and a wire screw rod. The pipeline main body is set as a multi-layer structure, and a heat-resistant layer, a heat preservation layer and a heat insulation layer are arranged between the outer pipeline and the inner pipeline. The material used in the multi-layer structure has the advantages of good insulation, strong heat resistance, good corrosion resistance, low thermal conductivity, light weight and the like, which can greatly improve the fire resistance and heat insulation of the pipeline main body, effectively prevent the high-temperature smoke from damaging the structure of the smoke exhaust pipeline after entering the inside of the smoke exhaust pipeline, and reduce the possibility of collapse.

[0004] However, this technical solution cannot simultaneously have good high-temperature resistance, impact resistance and flow guiding effect, cannot solve the problem of pipeline thermal expansion, and cannot handle the possible cracks in the flange of the connected pipeline when high temperature is encountered.

[0005] Therefore, the technical personnel in the art provide a fire smoke exhaust pipeline to solve the above problems. UTILITY MODEL CONTENT

[0006] In order to solve the above technical problems, the utility model provides a fire smoke exhaust pipeline, which comprises a honeycomb structure pipeline main body, a corrugated structure pipeline main body, a hanging rod, a hanging bracket, a flange and a connecting device.

[0007] Preferably, the two ends of the honeycomb structure pipeline main body are respectively fixedly connected with flanges, and the flanges at the side ends of the honeycomb structure pipeline main body and the flanges at the side ends of the corrugated structure pipeline main body are connected and installed through the connecting device.

[0008] Preferably, the honeycomb structure pipe body comprises a honeycomb inner layer, a heat insulation middle layer and an impact resistance outer layer; the honeycomb inner layer is externally provided with dovetail grooves, the heat insulation middle layer is embedded into the dovetail grooves by high-temperature pressing and is fixedly connected with the honeycomb inner layer, the impact resistance outer layer is internally provided with dovetail grooves, the heat insulation middle layer is embedded into the dovetail grooves by high-temperature pressing and is fixedly connected with the impact resistance outer layer, the dovetail grooves make the connection more stable, and the honeycomb structure pipe body composed of the three layers has good high-temperature resistance, fire prevention and impact resistance effects.

[0009] Preferably, the honeycomb inner layer is made of honeycomb ceramic composite material and has the effects of high-temperature resistance and flow guiding, the heat insulation middle layer is made of ceramic fiber cotton and has the effect of heat insulation, and the impact resistance outer layer is made of galvanized steel plate and has the effects of impact resistance and corrosion resistance.

[0010] Preferably, the hanging bracket is connected and installed with the hanging rod and is fixedly connected with the honeycomb structure pipe body and the corrugated structure pipe body and plays a supporting role on the honeycomb structure pipe body and the corrugated structure pipe body.

[0011] Preferably, the outer layer of the corrugated structure pipe body is made of stainless steel and the inner layer is made of ceramic fiber, so that corrosion resistance and heat insulation are considered, the inner side of the corrugated structure pipe body is coated with a carbide wear-resistant coating to increase wear resistance, the cross section of the corrugated structure pipe body is in a corrugated shape and plays a role in relieving the thermal expansion problem often encountered by traditional pipes, the flange is provided with a flange through hole for matching a connecting device, and the flange is provided with a sealing groove for filling a self-expanding fireproof sealing strip, so that the sealing strip expands and fills the cracks possibly existing in the internal connection of the flange when high temperature is encountered.

[0012] Preferably, the connecting device is composed of a wrench, a rotating table, a pressing rod, a stud, a gasket and a fastening nut, the wrench is fixedly connected with the pressing rod, the pressing rod is inserted into the convex column inner hole at the top of the rotating table, the stud, the gasket and the fastening nut are connected and installed, the wrench is in an eccentric cam structure and has a certain damping effect, is in a loose state when being pulled, is fixedly connected with the pressing rod, is rotated to drive the pressing rod to rotate synchronously, makes the stud rotate, is connected and installed between the stud, the gasket and the fastening nut, and the fastening nut moves reversely to the stud to be locked, so that the connecting device locks the flanges of the side walls of the honeycomb structure pipe body and the corrugated structure pipe body.

[0013] The technical effects and advantages of the utility model are as follows:

[0014] 1. The composite sandwich honeycomb structure pipe has good high-temperature resistance, fire prevention, impact resistance and flow guiding effects.

[0015] 2. The cross section of the corrugated structure pipe is in a corrugated shape and plays a role in relieving the thermal expansion problem often encountered by traditional pipes.

[0016] 3. The connecting flange used in this utility model is provided with a sealing groove for filling the self-expanding fireproof sealing strip. When exposed to high temperature, the sealing strip expands and fills any cracks that may appear at the connection point inside the flange. Attached Figure Description

[0017] Fig. 1 This is a structural schematic diagram of a fire-fighting smoke exhaust duct provided in an embodiment of this application;

[0018] Fig. 2 This is a cross-sectional view of a fire exhaust duct provided in an embodiment of this application;

[0019] Fig. 3 This is a schematic diagram of the structure of A in a fire-fighting smoke exhaust duct provided in an embodiment of this application;

[0020] Fig. 4 This is a schematic diagram of the main body of a honeycomb structure pipe in a fire smoke exhaust duct provided in an embodiment of this application;

[0021] Fig. 5 This is a structural schematic diagram of a connecting device in a fire-fighting smoke exhaust duct provided in an embodiment of this application.

[0022] In the diagram: 1. Honeycomb structure pipe body; 2. Corrugated structure pipe body; 3. Hanger; 4. Hanger bracket; 5. Flange; 6. Connecting device; 101. Honeycomb inner layer; 102. Insulation middle layer; 103. Impact resistant outer layer; 104. Dovetail groove; 501. Flange through hole; 502. Sealing groove; 601. Wrench; 602. Turntable; 603. Pressure rod; 604. Stud; 605. Gasket; 606. Fastening nut. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0024] Please see Figs. 1-5 In this embodiment, a fire exhaust duct is provided, including a honeycomb structure duct body 1, a corrugated structure duct body 2, a hanger 3, a hanger 4, a flange 5, and a connecting device 6;

[0025] The flange 5 of the side end of the honeycomb structure pipe body 1 and the flange 5 of the side end of the corrugated structure pipe body 2 are connected and installed through the connecting device 6.

[0026] The honeycomb structure pipe body 1 comprises a honeycomb inner layer 101, a heat insulation middle layer 102 and an impact resistance outer layer 103, the outer side of the honeycomb inner layer 101 is provided with a dovetail groove 104, the heat insulation middle layer 102 is embedded into the dovetail groove 104 through high temperature compression and fixedly connected with the honeycomb inner layer 101, the inner side of the impact resistance outer layer 103 is provided with a dovetail groove 104, the heat insulation middle layer 102 is embedded into the dovetail groove 104 through high temperature compression and fixedly connected with the impact resistance outer layer 103, the dovetail groove 104 makes the connection more stable, the honeycomb structure pipe body 1 composed of the three layers has good high temperature resistance, fire resistance and impact resistance effects;

[0027] The honeycomb inner layer 101 is made of honeycomb ceramic composite material and has the effects of high temperature resistance and flow guide, the heat insulation middle layer 102 is made of ceramic fiber cotton and has the effect of heat insulation, and the impact resistance outer layer 103 is made of galvanized steel plate and has the effects of impact resistance and corrosion resistance;

[0028] The hanger 4 is fixedly connected with the suspender 3 and the honeycomb structure pipe body 1 and the corrugated structure pipe body 2, and plays a supporting role for the honeycomb structure pipe body 1 and the corrugated structure pipe body 2;

[0029] The outer layer of the corrugated structure pipe body 2 is made of stainless steel and the inner layer is made of ceramic fiber, which has the effects of corrosion resistance and heat insulation, the inner side of the corrugated structure pipe body 2 is coated with a carbide wear-resistant coating to increase wear resistance, and the cross section of the corrugated structure pipe body 2 is in a corrugated shape, which can relieve the problem of thermal expansion often encountered by traditional pipes;

[0030] The flange 5 is provided with a flange through hole 501 for matching the connecting device 6, and is provided with a sealing groove 502 for filling a self-expanding fireproof sealing strip, which expands and fills the cracks possibly existing in the internal connection of the flange 5 when high temperature is encountered;

[0031] The connecting device 6 is composed of a wrench 601, a rotating table 602, a pressing rod 603, a stud 604, a gasket 605 and a fastening nut 606, the wrench 601 is fixedly connected with the pressing rod 603, the pressing rod 603 is inserted into the inner hole of the convex column on the top of the rotating table 602, the stud 604 is threadedly connected with the fastening nut 606, the gasket 605 is nested on the stud 604, the wrench 601 is an eccentric cam structure and has a certain damping effect, and is in a loose state when being pulled away, since the wrench 601 is fixedly connected with the pressing rod 603, the pressing rod 603 is synchronously rotated when the wrench 601 is rotated, the stud 604 is moved to the fastening nut 606, the fastening nut 606 is reversely moved to the stud 604 and is locked, so that the connecting device 6 locks the flanges 5 on the side walls of the honeycomb structure pipeline body 1 and the corrugated structure pipeline body 2.

[0032] Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art and related fields without creative labor should belong to the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application, if not specially described and limited, are implemented according to the conventional means in the art.

Claims

1. A fire service smoke evacuation conduit, characterised in that, The utility model provides a kind of pipeline body, including honeycomb structure pipeline body (1), corrugated structure pipeline body (2), boom (3), hanger (4), flange (5) and connecting device (6), the flange (5) of honeycomb structure pipeline body (1) two ends outer edge is respectively fixedly connected, the flange (5) of honeycomb structure pipeline body (1) side end and the flange (5) of corrugated structure pipeline body (2) side end are connected installation by connecting device (6).

2. A fire smoke evacuation conduit according to claim 1, wherein, The honeycomb structure pipeline body (1) includes a honeycomb inner layer (101), a heat insulation middle layer (102), and an impact-resistant outer layer (103). The honeycomb inner layer (101) has dovetail grooves (104) on its outer side. The heat insulation middle layer (102) is embedded in the dovetail grooves (104) through high-temperature pressing and is fixedly connected with the honeycomb inner layer (101). The impact-resistant outer layer (103) has dovetail grooves (104) on its inner side. The heat insulation middle layer (102) is embedded in the dovetail grooves (104) through high-temperature pressing and is fixedly connected with the impact-resistant outer layer (103).

3. A fire smoke evacuation conduit according to claim 2, wherein, The honeycomb inner layer (101) is made of honeycomb ceramic composite material. The heat insulation middle layer (102) is made of ceramic fiber cotton. The impact-resistant outer layer (103) is made of galvanized steel plate.

4. A fire smoke evacuation conduit according to claim 1, wherein, The hanger (4) is fixedly connected with the boom (3), and is fixedly connected with the honeycomb structure pipeline body (1) and the corrugated structure pipeline body (2).

5. A fire smoke evacuation conduit according to claim 4, wherein, The outer layer of the corrugated structure pipeline body (2) is made of stainless steel, and the inner layer is made of ceramic fiber. The inner side of the corrugated structure pipeline body (2) is coated with a carbide wear-resistant coating. The cross section of the corrugated structure pipeline body (2) is in a corrugated shape.

6. A fire smoke evacuation conduit according to claim 1, wherein, The flange (5) is provided with a flange through hole (501) for matching the connecting device (6). The flange (5) is provided with a sealing groove (502) for filling a self-expanding fireproof sealing strip.

7. A fire smoke evacuation conduit according to claim 6, wherein, The connecting device (6) is composed of a wrench (601), a rotary table (602), a pressing rod (603), a stud (604), a gasket (605), and a fastening nut (606). The wrench (601) is fixedly connected with the pressing rod (603), which is inserted into the inner hole of the protruding column on the top of the rotary table (602). The stud (604) is threadedly connected with the fastening nut (606), and the gasket (605) is nested on the stud (604). The wrench (601) is in an eccentric cam structure.

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