CN111980368B - Assembled steel structure combined air duct system and construction method thereof - Google Patents
Assembled steel structure combined air duct system and construction method thereof Download PDFInfo
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- CN111980368B CN111980368B CN202010885554.XA CN202010885554A CN111980368B CN 111980368 B CN111980368 B CN 111980368B CN 202010885554 A CN202010885554 A CN 202010885554A CN 111980368 B CN111980368 B CN 111980368B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F17/00—Vertical ducts; Channels, e.g. for drainage
- E04F17/04—Air-ducts or air channels
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F17/00—Vertical ducts; Channels, e.g. for drainage
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Abstract
The invention discloses an assembled steel structure combined air duct system and a construction method thereof, wherein the assembled steel structure combined air duct system comprises steel structure middle columns, I-beams connected among the columns, an air duct system containing the I-beams and indoor ventilation areas; the air duct system comprises a fresh air unit, a fresh air pipeline and an exhaust pipeline which are respectively connected with the fresh air unit, a fresh air scavenging pipe connected between the fresh air unit and the fresh air pipeline, an exhaust scavenging pipe connected between the fresh air unit and the exhaust pipeline, a fresh air outlet connected on the fresh air pipeline and an exhaust outlet connected on the exhaust pipeline; the fresh air pipeline and the exhaust pipeline are connected with the sealing plate through the opening on one side of the I-beam to form a circle. The air duct is formed after the I-beam is sealed, so that the structural characteristics are favorably utilized, and the construction and cost investment are saved; the I-shaped beam is used as an air duct to ensure that the air duct is fully distributed and orderly connected in the integral structure; the indoor area division is beneficial to meeting the ventilation requirements of different functional areas to the maximum extent.
Description
Technical Field
The invention belongs to the field of building construction, and particularly relates to an assembled steel structure combined air duct system and a construction method thereof.
Background
Indoor air quality is an important applicability index in the use function of buildings, and is the trend of modern people to pursue higher-quality life, and various civil buildings need to be provided with various ventilation systems such as air exhaust, air supply and fresh air to ensure the indoor air quality in order to ensure the life health of people. The fresh air system is an important type, and the fresh air system of the building needs to be provided with independent air supply and exhaust pipelines to respectively lay the fresh air and the exhaust pipelines to each main function room. The existing fresh air system pipeline needs to be arranged independently, the cost is high, the length of the air pipe is long, holes need to be drilled when the air pipe passes through structures such as side walls and dummy mouths, and the structure of a building can be damaged indirectly; in addition, the pipeline of the ventilation system is not beautiful if exposed, and the design is carried out by combining the ceiling wrapping mode with the built-in mode at present, so that the construction steps and the cost are increased; and ventilation system still can seriously crowd the effective use height in the room, and all arrange the wind channel region and reduce at the net height behind the setting furred ceiling, cause the sense of space oppression to the people, especially cause the influence to the indoor space of the lower building of floor height such as house, when not satisfying the operation requirement or even need just improve every layer height of building in the design link, can greatly increased actual construction cost and extension time limit for a project.
Disclosure of Invention
The invention provides an assembled steel structure combined air duct system and a construction method thereof, which are used for solving the technical problems of convenient design, integrated installation, local targeted design, regional planning and the like of an assembled building by taking an I-beam as a main component of the air duct system.
In order to achieve the purpose, the invention adopts the following technical scheme:
an assembled steel structure combined air duct system comprises steel structure middle columns, I-beams connected among the columns, an air duct system containing the I-beams and indoor ventilation areas;
the air duct system comprises a fresh air unit, a fresh air pipeline and an exhaust pipeline which are respectively connected with the fresh air unit, a fresh air scavenging pipe connected between the fresh air unit and the fresh air pipeline, an exhaust scavenging pipe connected between the fresh air unit and the exhaust pipeline, a fresh air outlet connected to the fresh air pipeline and an exhaust outlet connected to the exhaust pipeline;
the fresh air pipeline and the exhaust pipeline are connected with the sealing plate through an opening on one side of the I-beam to form a ring, the ventilation starting end of the fresh air pipeline and the starting end of the exhaust pipeline are both connected with a plugging piece, and the corners of the fresh air pipeline and the exhaust pipeline are connected with flow deflectors.
Furthermore, the fresh air pipeline comprises a fresh air I-beam body, a fresh air beam body coating connected to the outer surface of the fresh air I-beam body, a fresh air sealing plate connected to an opening of the fresh air I-beam body facing the indoor side, a fresh air fixing member and a fresh air connecting member connected between the fresh air sealing plate and the fresh air I-beam body;
the exhaust pipeline comprises an exhaust I-beam body, an exhaust beam body coating connected to the outer surface of the exhaust I-beam body, an exhaust sealing plate connected to an opening, facing the indoor side, of the exhaust I-beam body, an exhaust fixing part connected between the exhaust sealing plate and the exhaust I-beam body and an exhaust connecting part.
Furthermore, the fresh air fixing piece is a group of right-angle-shaped pieces which are respectively connected to the connection internal corner of the fresh air sealing plate and the fresh air I-beam body; the fresh air fixing piece is detachably connected with the fresh air sealing plate through a connecting piece;
the air exhaust fixing piece is a group of right-angle-shaped pieces which are respectively connected to the air exhaust sealing plate and the connecting internal corner of the air exhaust I-beam body; the air exhaust fixing piece is detachably connected with the air exhaust sealing plate through a connecting piece.
Furthermore, the fresh air beam body coating and the exhaust beam body coating respectively comprise a fireproof coating, an anti-corrosion coating and a waterproof coating.
Furthermore, the fresh air outlet comprises a fresh air inlet body and a fresh air filter screen arranged in the fresh air inlet body; the air exhaust outlet comprises an air exhaust outlet body and an air exhaust filter screen arranged in the air exhaust outlet body; the new wind gap body and the air outlet body are arranged at intervals and can be detachably connected to the new wind sealing plate.
Furthermore, the fresh air outlet and the air exhaust outlet respectively correspond to a fresh air sealing plate and an air exhaust sealing plate which are splayed, and the large end of the opening faces the inside of the air duct.
Furthermore, the fresh air ventilating window and the air exhaust ventilating window are arranged on the wall body; a fresh air ventilating pipe is connected between the fresh air ventilating window and the fresh air unit; the air exhaust ventilation window and the exhaust fan set are connected with a fresh air ventilation pipe.
Furthermore, each indoor ventilation area is divided into a ventilation area, a rest area, a washing area, an activity area and a guest-meeting dining area; i-beams of the ventilation area, the rest area and the washing area are made into fresh air pipelines, and I-beams of the activity area and the guest dining area are made into air exhaust pipelines; the ventilation area is provided with a fresh air unit and a wall body thereof is provided with a fresh air ventilation window and an air exhaust ventilation window.
Furthermore, the fresh air pipeline and the exhaust pipeline are arranged oppositely in the indoor longitudinal direction, and the fresh air pipeline and the exhaust pipeline are at least provided with a corresponding fresh air outlet and an exhaust outlet in each divided area.
Furthermore, the plugging piece comprises a plugging plate, a sound absorption plate connected to the inner side of the plugging plate, a connecting piece connected to the plugging plate and the sound absorption plate, a limiting piece connected to the fresh air pipeline or the exhaust pipeline, and a fixing piece connected between the limiting piece and the plugging plate; the limiting piece is an angle-shaped piece, one side of the angle-shaped piece is connected with a fresh air pipeline or an exhaust pipeline, and the other side of the angle-shaped piece is connected with the plugging plate through a fixing piece.
Further, the construction method of the assembled steel structure combined air duct system comprises the following specific steps:
firstly, before construction of building engineering, firstly, determining to adopt a thin or ultra-thin anti-corrosion coating to carry out waterproof, fireproof and anti-corrosion design on a steel structure with a professional designer of the steel structure; by utilizing the BIM technology, carrying out region division on each household in a room, determining the appropriate position of an installed I-beam, designing the determination of the positions of a fresh air fixing piece, an air exhaust fixing piece, a limiting piece and the like, and determining the positions of holes for ventilation of a fresh air pipeline and an air exhaust pipeline;
step two, after the construction project is finished, the installation project begins, and firstly, the installation of internal components of the I-beam manufacturing air duct system, such as a fresh air fixing piece, an air exhaust fixing piece, a limiting piece, a flow deflector, a sound absorption material and a plugging piece, is carried out; wherein, each component is pre-segmented or prefabricated in units through BIM technology and design drawing;
hoisting a fresh air unit in the air exchange area, connecting a fresh air ventilating pipe and an air exhaust ventilating pipe on the fresh air unit, respectively connecting a fresh air ventilating window and an air exhaust ventilating window on the wall body, and tightly plugging the hole at the connection position by adopting a flexible fireproof material; in addition, joints are reserved in the room for the fresh air ventilating pipe and the air exhaust ventilating pipe;
step four, sealing the I-beam air duct, classifying factory-prefabricated sealing plates with sound absorption materials according to the size of the air duct system, pre-arranging the sealing plates at corresponding positions on the ground according to product numbers, and then sequentially installing the sealing plates; after the installation is finished, uniformly gluing and sealing all gaps;
reserving joints for a fresh air ventilating pipe and an exhaust air ventilating pipe at a fresh air ventilator in a room, and respectively connecting the joints with a closed fresh air pipeline and an exhaust air pipeline; the connection is carried out through flanges, screws or hot melting connection, and the connection position is sealed;
step six, performing overall test operation of the air duct system, and after starting a fresh air ventilator, firstly observing whether all gaps are tightly closed, if so, marking firstly, and performing centralized treatment after overall inspection; then, testing each fresh air outlet and each exhaust air outlet by using an anemometer, and enabling the air quantity to meet the design requirement by adjusting the opening degree of an air port; and the air duct system is qualified in overall test operation, and after all sealing materials are completely dried, other projects of the room are constructed.
The invention has the beneficial effects that:
1) according to the invention, the air duct is formed by sealing one side of the I-beam through the sealing plate, so that the special structural characteristics of the assembly type are utilized, and the construction and cost investment of independently arranging the air duct are saved; the I-shaped beam is used as an air duct to ensure that the air duct is fully distributed and orderly connected in the integral structure;
2) the invention divides the indoor area of the building into a fresh air pipeline and an exhaust pipeline correspondingly. The indoor integral ventilation circulation can be facilitated, and the ventilation requirements of different functional areas can be met to the greatest extent;
3) the fresh air supply and the indoor exhaust which take the fresh air unit as the core are organically combined through the combined arrangement of the fresh air ventilating pipe, the fresh air ventilating window, the exhaust ventilating pipe, the exhaust ventilating window and the like, so that the positive circulation of ventilation is favorably realized;
4) according to the invention, the arrangement of the plugging piece is beneficial to plugging the starting ends of the fresh air pipeline and the exhaust pipeline, so that the sealing property of the air duct is ensured; the arrangement of the sound absorption material on the inner side of the plugging piece is also beneficial to ensuring the silence and comfort of the indoor environment;
in addition, the invention is convenient for construction, is beneficial to installation and maintenance, does not increase other indoor structures which need to occupy high space, is beneficial to saving indoor space, and can greatly save construction cost and time; additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention; the primary objects and other advantages of the invention may be realized and attained by the instrumentalities particularly pointed out in the specification.
Drawings
FIG. 1 is a schematic view of a fabricated steel structural combined duct system;
FIG. 2 is a schematic view of the ductwork connections;
FIG. 3 is a schematic cross-sectional view of a fresh air duct;
FIG. 4 is a schematic view of the fresh air duct and fresh air outlet connection;
FIG. 5 is a schematic cross-sectional view of an exhaust duct;
FIG. 6 is a schematic view of the exhaust duct or fresh air outlet connection;
FIG. 7 is a schematic view of the corner connection of the exhaust duct or the fresh air duct;
FIG. 8 is a schematic perspective view of the installation of a plugging member for an exhaust duct or a fresh air duct;
figure 9 is a schematic view of the connection of the closure.
Reference numerals: 1-column body, 2-I-beam, 3-air duct system, 31-fresh air unit, 32-fresh air pipeline, 321-fresh air I-beam body, 322-fresh air beam body coating, 323-fresh air fixing member, 324-fresh air connecting member, 325-fresh air sealing plate, 33-fresh air outlet, 331-fresh air port body, 332-fresh air filter screen, 34-exhaust pipeline, 341-exhaust I-beam body, 342-exhaust beam body coating, 343-exhaust fixing member, 344-exhaust connecting member, 345-exhaust sealing plate, 35-exhaust outlet, 351-exhaust port body, 352-exhaust filter screen, 36-fresh air ventilation pipe, 37-exhaust ventilation pipe, 38-fresh air ventilation window, 39-exhaust ventilation window, 4-ventilation area, 5-rest area, 6-washing area, 7-moving area, 8-guest-meeting dining area, 9-blocking piece, 91-blocking plate, 92-sound absorbing plate, 93-connecting piece, 94-limiting piece, 95-fixing piece and 10-flow deflector.
Detailed Description
Taking a certain assembled steel structure residential project as an example, the structure system adopts a steel structure, the floor slab is a composite floor slab, the outer wall adopts ALC autoclaved aerated concrete slabs, and a heat-insulation and decoration integrated plate is attached to the outer wall. The building has 18 floors on the ground, and the floor height is 2.9 meters. The total building area of each building is 1.3 ten thousand square meters, and the building is finished and delivered. A fresh air system is arranged indoors, and I-shaped steel beams in the building have different sizes of 400mm multiplied by 300mm, 500 mm multiplied by 300mm, 600 mm multiplied by 400mm and the like. After the cavity of the flange at one side of the I-beam is closed, the net sectional area is about 0.06-0.12 square meter. The air flow speed of the fresh air system is designed to be 5m/s, and the fresh air exchange frequency is designed to be 8 times/h. The fresh air exchange volume of each family is about 1500m by calculation3And h, the ventilation requirement of each room can be met.
As shown in fig. 1, the schematic view of the structural construction of a certain steel structure prefabricated building is shown, wherein columns 1 are arranged at the joints of four corners, corners and walls, and the columns 1 are connected with i-beams 2. An air duct system 3 is designed through the distribution of the I-shaped beams 2 and the functional division of indoor rooms. The column body 1 and the I-shaped beam 2 are made of section steel.
In this embodiment, the air duct system further includes a fresh air ventilating window 38 and an air exhaust ventilating window 39, both the fresh air ventilating window 38 and the air exhaust ventilating window 39 are disposed on the wall, and both are anti-backflow and rainproof integrated shutters. A fresh air ventilating pipe 36 is connected between the fresh air ventilating window 38 and the fresh air handling unit 31; the exhaust air ventilating window 39 and the exhaust fan set are connected with a fresh air ventilating pipe 36.
In the embodiment, each indoor ventilation area is divided into an air exchange area 4, a rest area 5, a washing area 6, an activity area 7 and a guest-meeting dining area 8; wherein the ventilation area 4 comprises a kitchen, the rest area 5 comprises a main bed and a secondary bed, the washing area 6 comprises a toilet and a washroom, the activity area 7 comprises a study room and a passage, and the guest-meeting dining area 8 comprises a living room and a dining room. The I-beams 2 of the ventilation area 4, the rest area 5 and the washing area 6 are made into a fresh air pipeline 32, and the I-beams 2 of the activity area 7 and the guest dining area 8 are made into an exhaust pipeline 34. The fresh air unit 31 is arranged in the ventilation area 4, and a fresh air ventilation window 38 and an exhaust air ventilation window 39 are arranged on the wall body of the fresh air unit.
In the present embodiment, the arrow direction in the figure indicates the direction of wind flow. The fresh air duct 32 and the exhaust duct 34 are arranged opposite to each other in the depth direction of the room, and the fresh air duct 32 and the exhaust duct 34 are provided with a fresh air outlet 33 and an exhaust air outlet 35 corresponding to each other in each divided area. The fresh air ventilator adopts a total heat exchange type, is provided with a fresh air filtering section, adopts an HEPA high-efficiency filter screen and can effectively purify 99.9 percent of PM2.5 pollutants.
As shown in fig. 2, the assembled steel structure combined air duct system includes steel structure middle columns 1, i-beams 2 connected between the columns 1, an air duct system 3 including the i-beams 2, and indoor ventilation areas; the air duct system 3 comprises a fresh air unit 31, a fresh air duct 32 and an exhaust duct 34 respectively connected with the fresh air unit 31, a fresh air scavenging duct 36 connected between the fresh air unit 31 and the fresh air duct 32, an exhaust scavenging duct 37 connected between the fresh air unit 31 and the exhaust duct 34, a fresh air outlet 33 connected with the fresh air duct 32 and an exhaust air outlet 35 connected with the exhaust duct 34; the fresh air pipeline 32 and the exhaust pipeline 34 are both enclosed by connecting sealing plates through openings at one side of the I-beam 2. In this embodiment, the fresh air ventilation pipe 36 and the exhaust air ventilation pipe 37 are connected in an assembled manner, and are in a U shape, an L shape or a V-21274shape, and the corners are round corners and can be set as elastic pipelines.
As shown in fig. 3, the fresh air duct 32 includes a fresh air i-beam 321, a fresh air beam coating 322 connected to an outer surface of the fresh air i-beam 321, a fresh air sealing plate 325 connected to an opening of the fresh air i-beam 321 facing an indoor side, a fresh air fixing member 323 connected between the fresh air sealing plate 325 and the fresh air i-beam 321, and a fresh air connecting member 324. In the invention, the fresh air fixing piece 323 is a group of steel right-angle angular pieces which are respectively welded and connected with the connection internal corner between the fresh air sealing plate 325 and the fresh air I-beam body 321; the fresh air fixing piece 323 is detachably connected with the fresh air sealing plate 325 through a connecting piece; the connecting piece is a bolt or a connecting rod with threads.
As shown in fig. 4, the exhaust duct 34 includes an i-beam 341, an exhaust beam coating 344 attached to an outer surface of the i-beam 341, an exhaust cover plate 345 attached to an opening of the i-beam 341 facing an indoor side, an exhaust fixing member 343 attached between the exhaust cover plate 345 and the i-beam 341, and an exhaust connecting member 344.
In the invention, the air exhaust fixing member 343 is a set of right angle angular parts, which are respectively connected to the connection female corners of the air exhaust sealing plate 345 and the air exhaust I-beam body 341; the exhaust fixing member 343 is detachably connected to the exhaust sealing plate 345 via a connector. The fresh air beam body coating 322 and the exhaust beam body coating 344 both include a fireproof coating, an anticorrosive coating, and a waterproof coating.
As shown in fig. 5 and 6, the fresh air outlet 33 includes a fresh air inlet body 331 and a fresh air filter screen 332 disposed in the fresh air inlet body 331; the exhaust outlet 35 includes an exhaust outlet body 351 and an exhaust filter 352 disposed in the exhaust outlet body 351; the fresh air inlet 331 and the air outlet 351 are arranged at intervals and detachably connected to the fresh air sealing plate 325. The fresh air sealing plate 325 and the air exhaust sealing plate 345 respectively corresponding to the fresh air outlet 33 and the air exhaust outlet 35 are in a splayed shape, and the large ends of the openings of the fresh air sealing plate and the air exhaust sealing plate face the inside of the air duct.
As shown in fig. 7 to 9, the fresh air duct 32 and the exhaust duct 34 are both enclosed by connecting sealing plates through an opening on one side of the i-beam 2, the starting end of the fresh air duct 32 and the starting end of the exhaust duct 34 are both connected with plugging pieces 9, and the corners of the fresh air duct 32 and the exhaust duct 34 are connected with flow deflectors 10.
In this embodiment, the flow deflector 10 is made of a non-combustible material with a smooth surface, including but not limited to galvanized steel plate, inorganic glass fiber reinforced plastic, and the like. The fixing mode is that four fulcrums are arranged near four corners of each guide vane 10 connected with the I-beam, thin angle steel is welded with the steel beam, the guide vanes 10 are connected and bonded by flexible adhesive materials, hot-melt connection or welding, and the like, so that the stability and the detachability of the guide vanes are guaranteed.
In this embodiment, the plugging member 9 includes a plugging plate 91, a sound absorbing plate 92 connected to the inner side of the plugging plate 91, a connecting member 93 connected to the plugging plate 91 and the sound absorbing plate 92, a limiting member 94 connected to the fresh air duct or the exhaust duct, and a fixing member 95 connected between the limiting member 94 and the plugging plate 91; the limiting member 94 is a steel angle member, one side of which is welded or adhered to the fresh air duct or the exhaust duct, and the other side of which is connected to the plugging plate 91 through a fastening member 95, wherein the fastening member 95 is a rivet or a self-tapping screw.
In this embodiment, the sound absorbing material is made of a glass fiber composite mat, and the fixing manner is a dual fixing manner, that is, the glass fiber composite mat is firstly bonded to the pipe plugging plate 91, and then the glass fiber composite mat is connected to the pipe plugging plate 93, wherein the connecting member 93 is a rivet or a self-tapping screw to prevent the falling-off.
With reference to fig. 1 to 9, a construction method of the assembled steel structure combined air duct system is further described, which specifically includes the following steps:
firstly, before construction of building engineering, firstly, determining to adopt a thin or ultra-thin anti-corrosion coating to carry out waterproof, fireproof and anti-corrosion design on a steel structure with a professional designer of the steel structure; by using the BIM technology, each household in the room is divided into regions, the appropriate position of the installed i-beam 2 is determined, the positions of the fresh air fixing member 323, the exhaust fixing member 343, the limiting member 94 and the like are determined, and the positions of the ventilation holes of the fresh air duct 32 and the exhaust duct 34 are determined.
Step two, after the construction project is finished, the installation project starts, and the installation of the internal components of the air duct system 3 for manufacturing the I-beam 2 is firstly carried out, such as the fresh air fixing part 323 and air exhaust fixing part 343, the limiting part 94, the flow deflector 10, the sound absorbing material and the plugging part 9; wherein, each component is pre-segmented or prefabricated in units through BIM technology and design drawing.
Hoisting a fresh air unit 31 in the air exchange area 4, connecting a fresh air ventilating pipe 36 and an air exhaust ventilating pipe 37 on the fresh air unit 31, and respectively connecting a fresh air ventilating window 38 and an air exhaust ventilating window 39 on a wall body, and tightly plugging the hole at the connecting position by adopting a flexible fireproof material; in addition, joints are reserved in the indoor of the fresh air ventilating pipe 36 and the exhaust air ventilating pipe 37;
step four, sealing the air channel of the I-beam 2, classifying factory-prefabricated sealing plates with sound absorption materials according to the size of the air channel system 3, pre-arranging the sealing plates at corresponding positions on the ground according to product numbers to prevent the occurrence of errors and leakage in the installation process, and then sequentially installing the sealing plates; after the installation is finished, uniformly gluing and sealing all gaps;
reserving joints for a fresh air ventilating pipe 36 and an exhaust air ventilating pipe 37 at a fresh air ventilator in a room, and respectively connecting the joints with the closed fresh air pipeline 32 and the closed exhaust air pipeline 34; the connection is carried out through flanges, screws or hot melting connection, and the connection position is sealed;
in the embodiment, the fresh air ventilating pipe 36 and the exhaust ventilating pipe 37 are hoisted, holes with corresponding sizes are reserved on the sealing plate at the joint with the I-beam 2 in advance, circular or rectangular flanges are arranged on the peripheries of the holes, a circle of sealing adhesive tape made of flexible non-combustible materials is firstly adhered at the joint of the flanges and the sealing plate, then the sealing adhesive tape is tightly connected in a rivet or self-tapping screw mode, and different connection modes are adopted according to different materials for the connection modes of the flanges, the fresh air ventilating pipe 36 and the exhaust ventilating pipe 37; when the fresh air ventilating pipe 36 and the exhaust air ventilating pipe 37 are made of PVC, hot melting connection can be adopted, and when galvanized steel plates or stainless steel pipelines are adopted, flanges are similarly installed, and the flanges at two sides are butted and locked by screws and nuts.
The fresh air ventilation pipe 36 and the air exhaust ventilation pipe 37 are installed at the air ports, wood pads are required to be fixed around the opening of the sealing plate material, the fresh air ventilation pipe 36 and the air exhaust ventilation pipe 37 are connected with the sealing plate through shooting nails, and then the adjustable air ports of the fresh air ventilation pipe 36 and the air exhaust ventilation pipe 37 are fixed on the wood pads through self-tapping screws.
Step six, carrying out integral test operation of the air duct system 3, after starting a fresh air ventilator, firstly observing whether all gaps are tightly closed, if so, marking firstly, and carrying out centralized treatment after integral inspection; then, testing each fresh air outlet 33 and each exhaust air outlet 35 by using an anemometer, and enabling the air quantity to meet the design requirement by adjusting the opening degree of an air port; and the air duct system 3 is qualified in overall test operation, and after all sealing materials are completely dried, other projects of the room are constructed. And meanwhile, through preliminary calculation, when the wind speed in the pipeline is more than 5m/s, the pipeline is filled with the grid type or sheet type silencer, so that the transmission of pipeline noise is reduced. The whole system is qualified in test operation, and after all sealing materials are completely dried, interior construction of a room can be carried out, such as painting waterproof putty, rolling wall paint and the like.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that may be made by those skilled in the art within the technical scope of the present invention will be covered by the scope of the present invention.
Claims (9)
1. An assembled steel structure combined air duct system is characterized by comprising steel structure middle columns (1), I-shaped beams (2) connected among the columns (1), an air duct system (3) containing the I-shaped beams (2) and indoor ventilation areas;
the air duct system (3) comprises a fresh air unit (31), a fresh air pipeline (32) and an exhaust pipeline (34) which are respectively connected with the fresh air unit (31), a fresh air ventilating pipe (36) connected between the fresh air unit (31) and the fresh air pipeline (32), an exhaust air ventilating pipe (37) connected between the fresh air unit (31) and the exhaust pipeline (34), a fresh air outlet (33) connected to the fresh air pipeline (32) and an exhaust air outlet (35) connected to the exhaust pipeline (34);
the fresh air pipeline (32) and the exhaust pipeline (34) are connected with a sealing plate through an opening on one side of the I-beam (2) to form a ring, the ventilation starting end of the fresh air pipeline (32) and the starting end of the exhaust pipeline (34) are connected with sealing pieces (9), and the corners of the fresh air pipeline (32) and the exhaust pipeline (34) are connected with flow deflectors (10);
the fresh air pipeline (32) comprises a fresh air I-shaped beam body (321), a fresh air beam body coating (322) connected to the outer surface of the fresh air I-shaped beam body (321), a fresh air sealing plate (325) connected to an opening of the fresh air I-shaped beam body (321) facing the indoor side, a fresh air fixing piece (323) connected between the fresh air sealing plate (325) and the fresh air I-shaped beam body (321) and a fresh air connecting piece (324);
the fresh air outlet (33) comprises a fresh air inlet body (331) and a fresh air filter screen (332) arranged in the fresh air inlet body (331); the exhaust outlet (35) comprises an exhaust port body (351) and an exhaust filter screen (352) arranged in the exhaust port body (351); the fresh air inlet body (331) and the air outlet body (351) are arranged at intervals and detachably connected to the fresh air sealing plate (325).
2. The assembled steel structure combined duct system according to claim 1, wherein the exhaust duct (34) comprises an exhaust i-beam body (341), an exhaust beam body coating (342) attached to an outer surface of the exhaust i-beam body (341), an exhaust closing plate (345) attached to an opening of the exhaust i-beam body (341) facing an indoor side, an exhaust fixing member (343) and an exhaust connecting member (344) attached between the exhaust closing plate (345) and the exhaust i-beam body (341).
3. The assembled steel structure combined air duct system of claim 2, wherein the fresh air fixing member (323) is a set of right-angle-shaped members, which are respectively connected to the connection internal corners of the fresh air sealing plate (325) and the fresh air i-beam body (321); the fresh air fixing piece (323) is detachably connected with the fresh air sealing plate (325) through a connecting piece;
the air exhaust fixing piece (343) is a group of right-angle-shaped pieces which are respectively connected to the connection internal corner of the air exhaust sealing plate (345) and the air exhaust I-beam body (341); the air exhaust fixing piece (343) is detachably connected with the air exhaust sealing plate (345) through a connecting piece.
4. The modular steel structural air duct system according to claim 2, wherein the fresh air beam body coating (322) and the ventilation beam body coating (342) each comprise a fire-resistant coating, an anti-corrosion coating, and a water-resistant coating.
5. The assembled steel structure combined duct system according to claim 1, wherein the fresh air sealing plate (325) and the exhaust air sealing plate (345) respectively corresponding to the fresh air outlet (33) and the exhaust air outlet (35) are splayed, and the larger end of the fresh air outlet and the larger end of the exhaust air outlet are opened towards the inside of the duct.
6. The assembled steel structure combined duct system according to claim 1, further comprising a fresh air ventilating window (38) and an exhaust air ventilating window (39), wherein the fresh air ventilating window (38) and the exhaust air ventilating window (39) are both arranged on the wall body; a fresh air ventilating pipe (36) is connected between the fresh air ventilating window (38) and the fresh air unit (31); the exhaust air ventilation window (39) and the exhaust fan set are connected with a fresh air ventilation pipe (36).
7. An assembled steel structure combined air duct system as claimed in claim 6, wherein each indoor ventilation area is divided into an air exchange area (4), a rest area (5), a washing area (6), an active area (7) and a guest dining area (8); i-beams (2) of the ventilation area (4), the rest area (5) and the washing area (6) are made into a fresh air pipeline (32), and I-beams (2) of the activity area (7) and the guest dining area (8) are made into an exhaust pipeline (34); a fresh air unit (31) is arranged in the air exchange area (4), and a fresh air ventilation window (38) and an air exhaust ventilation window (39) are arranged on the wall body of the fresh air unit; the fresh air pipeline (32) and the exhaust pipeline (34) are arranged oppositely in the indoor longitudinal direction, and the fresh air pipeline (32) and the exhaust pipeline (34) are at least provided with a corresponding fresh air outlet (33) and an exhaust outlet (35) in each divided area.
8. An assembled steel structure combined duct system according to claim 7, wherein the blocking member (9) comprises a blocking plate (91), a sound absorbing plate (92) attached to the inner side of the blocking plate (91), a connecting member (93) connected to the blocking plate (91) and the sound absorbing plate (92), a limiting member (94) connected to the fresh air duct or the exhaust duct, and a fastening member (95) connected between the limiting member (94) and the blocking plate (91);
the limiting piece (94) is an angle piece, one side of the angle piece is connected with a fresh air pipeline or an exhaust pipeline, and the other side of the angle piece is connected with the plugging plate (91) through a fixing piece (95).
9. A construction method of the assembled steel structure combined type air duct system according to any one of claims 1 to 8, characterized by comprising the following concrete steps:
firstly, before construction of building engineering, firstly, determining to adopt a thin or ultra-thin anti-corrosion coating to carry out waterproof, fireproof and anti-corrosion design on a steel structure with a professional designer of the steel structure; by utilizing BIM technology, carrying out regional division on each household in a room, determining the appropriate position of an installed I-beam (2), designing the determination of the positions of a fresh air fixing piece (323), an air exhaust fixing piece (343), a limiting piece (94) and the like, and determining the positions of holes for ventilation of a fresh air pipeline (32) and an air exhaust pipeline (34);
step two, after the construction project is finished, the installation project begins, and the installation of internal components of the air duct system (3) manufactured by the I-beam (2) is firstly carried out, such as a fresh air fixing piece (323), an air exhaust fixing piece (343), a limiting piece (94), a flow deflector (10), a sound absorption material and a plugging piece (9); wherein, each component is pre-segmented or prefabricated in units through BIM technology and design drawing;
hoisting a fresh air unit (31) in the ventilation area (4), connecting a fresh air ventilation pipe (36) and an air exhaust ventilation pipe (37) on the fresh air unit (31), respectively connecting a fresh air ventilation window (38) and an air exhaust ventilation window (39) on a wall body, and tightly plugging the hole at the joint by adopting a flexible fireproof material; in addition, joints are reserved in the room for the fresh air ventilating pipe (36) and the exhaust air ventilating pipe (37);
step four, sealing the air channel of the I-beam (2), classifying factory-prefabricated sealing plates with sound absorption materials according to the size of the air channel system (3), pre-arranging corresponding positions on the ground according to product numbers, and then sequentially installing; after the installation is finished, uniformly gluing and sealing all gaps;
a fifth step of reserving joints for a fresh air ventilating pipe (36) and an exhaust air ventilating pipe (37) at the fresh air ventilator indoors, and respectively connecting the joints with a closed fresh air pipeline (32) and an exhaust air pipeline (34); the connection is carried out through flanges, screws or hot melting connection, and the connection position is sealed;
step six, carrying out integral test operation on the air duct system (3), and after starting a fresh air ventilator, firstly observing whether all gaps are tightly closed, if so, marking firstly, and carrying out centralized treatment after integral inspection; then, testing each fresh air outlet (33) and each exhaust air outlet (35) by using an anemometer, and enabling the air quantity to meet the design requirement by adjusting the opening degree of an air port; and the air duct system (3) is qualified in overall test operation, and construction of other projects of a room is carried out after all sealing materials are completely dried.
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