CN219606275U - Fire-proof structure of smoke exhaust air pipe - Google Patents

Abstract

The utility model discloses a fire-proof structure of a smoke exhaust air pipe, which comprises a plurality of smoke exhaust air pipes and smoke exhaust air valves arranged between adjacent smoke exhaust air pipes, wherein the periphery of the outer part of each smoke exhaust air pipe is coated with a first fire-proof plate, the periphery of the outer part of each smoke exhaust air valve is coated with a second fire-proof plate, and the periphery of the outer part of a joint between each smoke exhaust air pipe and each smoke exhaust air valve is coated with a third fire-proof plate, so that the smoke exhaust air pipes, the smoke exhaust air valves and the joint of each smoke exhaust air pipe and each smoke exhaust air valve are comprehensively coated. The utility model has ingenious design and simple structure, does not need to build a keel outside the air pipe, can effectively improve the construction efficiency, reduce the cost and save the energy consumption, can save the space of a suspended ceiling, and meets the requirement of an owner on the net height.

Description

Fire-proof structure of smoke exhaust air pipe

Technical Field

The utility model relates to the technical field of constructional engineering, in particular to a smoke exhaust air pipe fireproof structure.

Background

The fire-resistant air duct most commonly used in China at the present stage is an iron sheet air duct externally covered fire-proof plate, so that the fire-proof protection performance of the smoke-proof air duct can be fundamentally improved. According to the conventional fireproof plate construction process, referring to the method of national standard atlas 07J905-1 fireproof building construction (I), keels are firstly used for installation and fixation outside the air pipes, and then the fireproof plates on four sides are fixed on the keels.

The existing smoke exhaust air pipe outer-wrapping fireproof plate has the following defects: first, the technique is complicated, and second, occupation space is many, and third, with high costs, fourth, panel field unloading, assemble the precision requirement high, and the deviation is slightly big will influence impression and function.

In view of the above-described problems, improvements are needed.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provides the smoke exhaust air pipe fireproof structure which is ingenious in design and simple in structure.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a fire prevention structure of tuber pipe of discharging fume, includes a plurality of tuber pipes of discharging fume, sets up the blast gate of discharging fume between adjacent tuber pipes of discharging fume, the outside cladding all around of tuber pipe of discharging fume has first PLASTIC LAMINATED, the outside cladding all around of blast gate of discharging fume has the second PLASTIC LAMINATED, the junction outside cladding all around between tuber pipe and the blast gate of discharging fume has the third PLASTIC LAMINATED to the realization is to the tuber pipe of discharging fume, the blast gate of discharging fume and the tuber pipe of discharging fume and the comprehensive cladding of blast gate junction of discharging fume.

Further, the adjacent two first fireproof plates around the smoke exhaust air pipe, the adjacent two second fireproof plates around the smoke exhaust air valve and the adjacent two third fireproof plates around the joint of the smoke exhaust air pipe and the smoke exhaust air valve are compacted through L-shaped keels and fixed through bolts.

Further, a group of steel fixing frames are arranged outside the smoke exhaust air pipe at equal intervals along the axial direction of the smoke exhaust air pipe and used for reinforcing the first fireproof plate.

Furthermore, the steel fixing frame adopts a C-shaped steel fixing frame and is arranged at the flange joint of the smoke exhaust air pipe, so that the flange joint of the smoke exhaust air pipe can be well covered by the C-shaped steel fixing frame.

Further, the bottom of the smoke exhaust air pipe is provided with a hoisting support, the hoisting support comprises a bracket and a suspender, two ends of the bracket respectively extend out of the smoke exhaust air pipe, one end of the suspender is fixed on the bracket, and the other end of the suspender is fixed on the top surface of a building.

Further, a heat insulation layer is arranged between the first fireproof plate and the smoke exhaust air pipe and between the second fireproof plate and the smoke exhaust air valve.

Further, fireproof paint layers are respectively coated on the steel fixing frame and the hoisting support.

Further, the first fireproof plate and the second fireproof plate are respectively rectangular fireproof plates, and the third fireproof plate is a trapezoid fireproof plate.

Further, an opening is arranged on the second fireproof plate on one side surface of the actuating mechanism of the smoke exhaust air valve at the position of the actuating mechanism.

The beneficial effects of the utility model are as follows:

1) The utility model has ingenious design and simple structure, does not need to build a keel outside the air pipe, can effectively improve the construction efficiency, reduce the cost and save the energy consumption, can save the space of a suspended ceiling, and meets the requirement of an owner on the net height.

2) According to the utility model, through the arrangement of the first fireproof plate, the second fireproof plate, the third fireproof plate and the steel fixing frame, the whole smoke exhaust system can be subjected to fireproof cladding, and the fireproof safety of the smoke exhaust system is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic end view of the present utility model;

FIG. 3 is an enlarged view of a portion of the utility model at A;

in the figure: 1. hoisting the bracket; 2. a smoke exhaust air pipe; 3. a first fire protection plate; 4. a smoke exhaust air valve; 5. a third flame retardant panel; 6. a steel fixing frame; 7. a second fireproof plate; 8. a thermal insulation layer; 9. an L-shaped keel; 10. and (5) fixing the screw.

Detailed Description

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

Example 1:

as shown in fig. 1-3; the embodiment provides a smoke exhaust air pipe fireproof structure, which comprises a hoisting bracket 1 assembled in a building; comprises a plurality of smoke discharging air pipes 2 which are assembled on a hoisting bracket 1; comprises a plurality of smoke exhaust air valves 4 which are assembled on the smoke exhaust air pipes 2; a first fireproof plate 3 which is externally covered outside the smoke exhaust air pipe 2; the second fireproof plate 7 which is externally covered on the smoke exhaust air valve 4, the third fireproof plate 5 which is externally covered on the joint of the smoke exhaust air pipe 2 and the smoke exhaust air valve 4, and the steel fixing frame 6 which is fixed on the outer side of the first fireproof plate 3.

Preferably, four sides of the first fire protection plate 3, the second fire protection plate 7 and the third fire protection plate 5 are compacted and clamped by the L-shaped keels 9 and are fixed by fixing screws 10.

Preferably, the first fireproof plate 3 and the second fireproof plate 7 are rectangular; the third fireproof plate 5 adopts trapezia, the third fireproof plate 5 is arranged between the first fireproof plate 3 and the second fireproof plate 7, one end of the third fireproof plate 5 is erected on the smoke exhaust air pipe 2, the other end is erected on the smoke exhaust air valve 4, and the third fireproof plate 5 is connected and sealed with the first fireproof plate 3 and the second fireproof plate 7 by sealant or structural adhesive.

Preferably, the steel fixing frame 6 adopts a C-shaped steel fixing frame, and the steel fixing frame 6 is arranged at the flange where two adjacent smoke exhaust air pipes 2 are connected, and the C-shaped steel fixing frame can cover the flange.

Preferably, the steel fixing frame and the hoisting support are coated with fireproof paint: the outer parts of the steel fixing frame and the hoisting support are coated with fireproof paint, so that the comprehensiveness of fireproof is guaranteed, and the L-shaped keels 9 can also be coated with fireproof paint.

The concrete construction steps of the utility model are as follows:

the method comprises the steps of installing a hoisting support, installing a smoke exhaust air pipe, installing a smoke exhaust air valve, blanking a fireproof plate, blanking a steel fixing frame, installing the fireproof plate, installing the steel fixing frame and brushing fireproof paint.

And (3) installing a hoisting support: the position of the bracket is determined according to the central line of the smoke exhaust air pipe, the elevation of the bracket is required to meet the elevation requirement of the smoke exhaust air pipe, and the bracket is not allowed to be arranged at the positions of the air port, the valve, the inspection door and the automatic control mechanism, and the distance from the air port or the insertion pipe is not less than 200mm. The suspender should be straight, and the position is right when installing, accomplish firmly reliably. The clearance between the elevation of the smoke exhaust air pipe and the suspender is not more than 150mm, and the distance between the suspender and the tail end of the smoke exhaust air pipe is not more than 1000mm. The length of the horizontally hoisted air pipe exceeds 20mm, and at least 1 fixing bracket for preventing the air pipe from swinging is arranged.

When the horizontal air pipe (containing heat preservation) is installed, the maximum distance between the hanging frames of the horizontal air pipe should be attached to the following table:

and (3) installing a smoke exhaust air pipe: before installation, the sundries in and out of the air pipe are removed, and cleaning and protecting work is performed. The installation position, elevation and trend of the smoke exhaust air pipe are in accordance with the design requirements. The connection of the fume exhaust pipe joint is tight; the flange gasket of the fume exhaust pipe should not protrude into the pipe or protrude outside the flange. When the length of the horizontally suspended air pipe exceeds 20m, an anti-shaking bracket should be arranged, and each branch pipe should not be less than one. The branch pipe is provided with a bracket within the range of 1200mm from the tee joint. The lifting of the fume exhaust air pipe can be connected to a certain length on the ground, the fume exhaust air pipe is lifted to the position of the lifting frame by the chain block and then is installed, and the larger fume exhaust air pipe can be installed in sections.

And (3) mounting a smoke exhaust air valve: the fire-proof valve, the smoke exhaust valve and the like are arranged at the position convenient to operate and overhaul. The installation direction is correct, the installed manual or electric operation device is flexible and reliable, and the valve is kept tight when closed. The operating device of the blast gate arranged at the high position is 1-1.5 m away from the ground or the platform. The lap joint and the lamination of the blades of the manual air valve are consistent, and the gap between the manual air valve and the valve body is smaller than 2mm. The manual sealing valve is installed, and the arrow direction of the mark on the valve is required to be consistent with the direction of the shockwave.

And (3) blanking a fireproof plate:

and cutting the fireproof plate meeting the fire resistance limit according to the external dimensions of the smoke prevention and exhaust air pipe and the smoke exhaust air valve. The straight pipe section is fed according to the height and width dimensions, the elbow special-shaped piece is cut into small mouths according to the length direction arc line, but the fireproof plate is not cut off, so that the processed fireproof plate can be attached along with the radian of the elbow special-shaped piece.

And (3) blanking a steel fixing frame:

after the air pipes at the construction positions are determined, whether the smoke exhaust air pipes are insulated or not is determined, and the insulated air pipes are required to be ensured to be insulated and are qualified through supervision, concealment and acceptance inspection. And checking whether the actual air pipe size is consistent with the marked size or not on site, and cutting and prefabricating the finished C-shaped steel in a warehouse operation room according to the on-site checking size. The C-shaped steel is 40mm in specification, and the accessory comprises a right-angle connecting piece, an M8 plastic wing nut and the like.

And (3) installing a fireproof plate: according to the size of the on-site smoke discharging air pipe, the fireproof plate is cut off and fed, wherein the length of the straight pipe section is consistent with the length of the standard section of the air pipe, the fireproof plate is tightly attached to four sides of the smoke discharging air pipe by an operation team, and four sides of the fireproof plate are compacted and clamped by L-shaped keels (30 mm multiplied by 30 mm). The smoke exhaust air valve and the connection position of the smoke exhaust air valve and the smoke exhaust air pipe are compacted and clamped through the L-shaped keels.

Installing a steel fixing frame: considering the dead weight of the fireproof plate and combining the length 1100mm of the standard section of the smoke exhaust air pipe, the distance between the C-shaped steel fixing frames is set to be 1.1m comprehensively, and the C-shaped steel fixing frames can be used for covering the air pipe flange.

And (3) coating fireproof paint: and coating fireproof paint on the outer parts of the steel fixing frame and the hoisting support.

Example 2:

the difference from the embodiment 1 is that a heat insulation layer 8 can be arranged between the fireproof plate and the smoke exhaust air pipe according to the actual installation place; the insulating layer cladding is outside the tuber pipe of discharging fume, and the PLASTIC LAMINATED cladding is outside the insulating layer.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model; thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Although the terms of the reference numerals in the drawings are used more herein, the possibility of using other terms is not excluded; these terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.

Claims (9)

1. The utility model provides a fire prevention structure of tuber pipe of discharging fume, includes a plurality of tuber pipes of discharging fume, sets up the blast gate of discharging fume between adjacent tuber pipes of discharging fume, its characterized in that, the outside cladding all around of tuber pipe of discharging fume has first PLASTIC LAMINATED, the outside cladding all around of blast gate of discharging fume has the second PLASTIC LAMINATED, the junction outside cladding all around between tuber pipe and the blast gate of discharging fume has the third PLASTIC LAMINATED to the realization is to the tuber pipe of discharging fume, the blast gate of discharging fume and the junction comprehensive cladding of blast gate of discharging fume and discharging fume.

2. The fire-proof structure of a smoke exhaust duct according to claim 1, wherein the two adjacent first fire-proof plates around the smoke exhaust duct, the two adjacent second fire-proof plates around the smoke exhaust valve, and the two adjacent third fire-proof plates around the joint of the smoke exhaust duct and the smoke exhaust valve are compacted by the L-shaped keels and fixed by bolts.

3. The fire protection structure for a flue gas duct according to claim 1, wherein a set of steel fixing frames are arranged outside the flue gas duct along the axial direction of the flue gas duct for reinforcing the first fire protection plate.

4. A smoke exhaust duct fireproof structure according to claim 3, wherein a lifting bracket is arranged at the bottom of the smoke exhaust duct, the lifting bracket comprises a bracket and a hanging rod, two ends of the bracket respectively extend out of the smoke exhaust duct, one end of the hanging rod is fixed on the bracket, and the other end of the hanging rod is fixed on the top surface of a building.

5. A fire-proof structure of a flue gas duct according to claim 3, wherein the steel fixing frame is a C-shaped steel fixing frame and is arranged at the flange joint of the flue gas duct.

6. The fire protection structure for the flue gas duct according to claim 1, wherein a heat insulation layer is arranged between the first fire protection plate and the flue gas duct and between the second fire protection plate and the flue gas damper.

7. The fire-proof structure of smoke exhaust duct of claim 4, wherein the steel fixing frame and the hoisting support are respectively coated with a fire-proof paint layer.

8. The fire prevention structure of a flue gas duct according to claim 1, wherein the first fire prevention plate and the second fire prevention plate are rectangular fire prevention plates respectively, and the third fire prevention plate is a trapezoid fire prevention plate.

9. The fire protection structure for a flue gas duct according to claim 8, wherein an opening is provided in the second fire protection plate on a side of the flue gas duct where the actuator of the flue gas damper is located at the position of the actuator.