CN212774938U - Vertical installation axial fan of big amount of wind low noise for utility tunnel - Google Patents
Vertical installation axial fan of big amount of wind low noise for utility tunnel Download PDFInfo
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- CN212774938U CN212774938U CN202021097403.XU CN202021097403U CN212774938U CN 212774938 U CN212774938 U CN 212774938U CN 202021097403 U CN202021097403 U CN 202021097403U CN 212774938 U CN212774938 U CN 212774938U
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- 238000009434 installation Methods 0.000 title claims abstract description 17
- 230000030279 gene silencing Effects 0.000 claims abstract description 18
- 230000008030 elimination Effects 0.000 claims abstract description 17
- 238000003379 elimination reaction Methods 0.000 claims abstract description 17
- 229920000742 Cotton Polymers 0.000 claims abstract description 15
- 229910001335 Galvanized steel Inorganic materials 0.000 claims abstract description 8
- 239000008397 galvanized steel Substances 0.000 claims abstract description 8
- 230000001681 protective effect Effects 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 11
- 238000009423 ventilation Methods 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 230000003584 silencer Effects 0.000 description 2
- 206010066054 Dysmorphism Diseases 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005445 natural material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a vertical installation axial fan of big amount of wind low noise for utility tunnel, including dryer, motor, wheel hub and blade, the motor passes through connecting plate fixed connection in the inside axle center department of dryer, wheel hub fixed connection in on the output shaft of motor, the blade fixed connection on the lateral wall of wheel hub, still including the air outlet noise elimination stator that flow equalizes, the air outlet noise elimination stator is located one end of dryer is through setting up the air outlet noise elimination stator that flow equalizes at the one end of dryer, and the air current that the fan inside produced flows out between the dryer, and the air outlet noise elimination stator that flow equalizes is flowed through earlier, and this part is according to the flow of aerodynamic performance, pressure energy level, the special noise eliminator of custom design; the main materials are galvanized steel sheets, galvanized silencing porous plates and silencing cotton materials; the flow equalizing guide vane is made of a galvanized silencing porous plate and silencing cotton materials, and can efficiently reduce the sound power noise of flowing air flow.
Description
Technical Field
The utility model relates to a utility tunnel ventilation system technical field, concrete field is the vertical installation axial fan of big amount of wind low noise for the utility tunnel.
Background
The ventilation system of utility tunnel is the indispensable safeguard measure of equipment operation safety and operation personnel safety in the piping lane, and ventilation system need dispose a large amount of axial fan. Because utility tunnel passes in city centre ground, fan noise needs strict control, consequently, the fan of the little amount of wind is usually selected for use to present pipe gallery, and is a large number. Under the general condition, according to utility tunnel's civil engineering structure, all fans of ventilation system need install in the top wind well of piping lane, move towards "word" along the piping lane top and arrange, adopt vertical mounting means. The large number of fans enables civil engineering investment and equipment investment scale of the ventilation system to be large, operation cost is high, and maintenance workload is large.
If the performances of all the fans are integrated and are completed by one fan, the equipment investment and the civil engineering installation cost can be greatly reduced, the operating efficiency of the fan can be improved, the energy-saving operation of a ventilation system is realized, and the equipment maintenance work can be reduced. At present, the diameter of an impeller of an axial flow fan with large air volume is usually more than 2000mm, but the running noise is large, the noise at a distance of 1 m away from an air outlet of the fan is usually more than 90dB (A), even if a silencer is adopted, the silencing quantity can be reduced by 12-15 dB (A) at most due to the limitation of installation space, and the requirement of environmental noise below 65dB (A) cannot be met.
The large-air-volume low-noise vertical axial flow fan for the comprehensive pipe gallery is an axial flow fan which combines a fan body structure with a noise elimination structure, adopts a large-size impeller and a specially-made low-rotating-speed motor made of special materials, and controls the noise at the distance of 1 m from an air outlet of the fan to be below 70dB (A) under the condition of not adopting a silencer.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a vertical installation axial fan of big amount of wind low noise for utility tunnel to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: utility tunnel is with vertical installation axial fan of big amount of wind low noise, including dryer, motor, wheel hub and blade, the motor passes through connecting plate fixed connection and is in the inside axle center department of dryer, wheel hub fixed connection be in on the output shaft of motor, blade fixed connection be in on wheel hub's the lateral wall, still including the air outlet noise elimination stator that flow equalizes, the air outlet noise elimination stator that flow equalizes is located the one end of dryer.
Preferably, the air outlet flow equalizing noise elimination guide vane comprises a mounting ring and a flow equalizing guide vane, and the flow equalizing guide vane is uniformly distributed on the outer surface of the mounting ring.
Preferably, the flow equalizing guide vane is made of a galvanized silencing porous plate, and the mounting ring is made of a galvanized steel plate.
Preferably, the outer surface of the flow equalizing guide vane is wrapped with noise reduction cotton.
Preferably, the outer surface of the air duct is provided with a plurality of mounting feet, and the mounting feet are respectively provided with an elastic piece.
Preferably, the blade is synthesized by high-strength glass fiber and resin, and the blade is of a high-efficiency wing profile.
Preferably, the hub and the corresponding blade are connected by bolts.
Preferably, the inner wall of the air duct is provided with silencing cotton.
Preferably, protective nets are respectively arranged at two ends of the air duct.
Compared with the prior art, the beneficial effects of the utility model are that: the axial flow fan is vertically installed in a large-air-volume low-noise mode for the comprehensive pipe gallery, an air outlet flow equalizing noise elimination guide vane is arranged at one end of an air cylinder, airflow generated inside the fan flows out of the air cylinder and firstly flows through the air outlet flow equalizing noise elimination guide vane, and the component is a special noise elimination device which is custom designed according to the flow and pressure energy level of aerodynamic performance; the main materials are galvanized steel sheets, galvanized silencing porous plates and silencing cotton materials; the flow equalizing guide vane is made of a galvanized silencing porous plate and silencing cotton material, so that the sound power noise of flowing air flow can be efficiently reduced; the installation angle of the flow equalizing guide vane is matched with the air flow speed angle of the fan, and the device can straighten the high-speed air flow pressurized out from the impeller, thereby greatly reducing the turbulence noise.
Drawings
Fig. 1 is a schematic view of a front view cross-sectional structure of the present invention;
fig. 2 is a schematic top view of the cross-sectional structure of the present invention;
fig. 3 is a schematic view of the overlooking structure of the flow equalizing noise elimination guide vane of the air outlet of the present invention;
FIG. 4 is an enlarged view of the structure at A in FIG. 1;
fig. 5 is an enlarged schematic view of B in fig. 1.
In the figure: the air-conditioning system comprises a wind barrel 1, a motor 2, a hub 3, blades 4, an air outlet flow equalizing noise elimination guide vane 5, a mounting ring 501, a flow equalizing guide vane 502, a mounting foot 6, an elastic piece 7 and a protective net 8.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: the large-air-volume low-noise vertical installation axial flow fan for the comprehensive pipe gallery comprises an air duct 1, a motor 2, two connecting plates and blades 4, wherein the motor 2 is fixedly connected to the inner axle center of the air duct 1 through the connecting plates as shown in figure 1, the number of the connecting plates is two, the connecting plates are fixedly connected to the inner side wall of the air duct 1 through bolts, the motor 2 is positioned between the two connecting plates, the motor 2 is a specially-made low-rotation-speed and F-level motor and is vertically installed, and can bear increased axial load, the hub 3 is fixedly connected to an output shaft of the motor 2, the blades 4 are fixedly connected to the side wall of the hub 3, the hub 3 is made of Q235 carbon steel, and the strength and toughness are ensured, the number of the blades 4 is 3 as shown in figure 2, and further comprises air outlet flow equalizing and silencing guide vanes 5, the flow equalizing and silencing 5 is positioned at one end of the air duct 1, and the fan supplies air from one end of the air outlet flow equalizing noise elimination guide vane 5.
Specifically, as shown in fig. 3, the air outlet flow equalizing noise elimination guide vane 5 includes a mounting ring 501 and a flow equalizing guide vane 502, the mounting ring 501 is annular, the mounting ring 501 and the air duct 1 are coaxially arranged, the flow equalizing guide vanes 502 are uniformly distributed on the outer surface of the mounting ring 501, one end of the flow equalizing guide vane 502 is fixedly connected with the outer surface of the mounting ring 501, the other end of the flow equalizing guide vane 502 is respectively fixedly connected with the inner surface of the air duct 1, the end surfaces of the flow equalizing guide vane 502 are arc-shaped, the flow equalizing guide vane 502 and the mounting ring 501 are mounted at a certain angle, the mounting angle of the flow equalizing guide vane 502 is matched with the air flow velocity angle of the blade 4, the device can straighten the high-speed airflow pressurized from the interior of the air duct 1, greatly reduces the turbulence noise and achieves the purpose of reducing the noise.
Particularly, the stator 502 that flow equalizes adopts the galvanized steel sheet to make, collar 501 adopts the galvanized steel sheet to make, adopts the galvanized steel sheet to make the air current of flowing through flow into inside the hole on its surface, the flow time of extension air, the vibrations that absorb the air simultaneously and produce, thereby further fall and make an uproar, two collar 501 adopts the galvanized steel sheet to make, thereby has guaranteed its intensity, prevents that the device from taking place to warp in the course of the work, thereby influences its effect of making an uproar that falls.
Specifically, the outer surface of the flow equalizing guide vane 502 is wrapped with noise reduction cotton, also called sound absorption cotton, is a rolled/sheet material processed by a plurality of processes from single or a plurality of different fibers, widely used is bi-component noise reduction cotton, polyester sound absorption cotton is one of the two, 100% polyester fiber is formed by high-technology hot pressing and cocoon cotton shape, the sound absorption coefficient reaches 0.94 within the noise range of 125-4000 HZ, the sound absorption material is soft and rich in natural material texture experience, various optional modern color systems, simple and convenient decorative modeling and good flame retardance, meanwhile, the material has good physical stability, is determined not to expand and shrink due to changes of temperature and temperature, is soft, smooth, natural in texture and high in elasticity, cannot break under the impact of huge external force, and is a good noise reduction material.
Specifically, as shown in fig. 1, the outer surface of the air duct 1 is provided with a plurality of mounting feet 6, the mounting feet 6 are respectively provided with an elastic member 7, the elastic member 7 plays a role in damping, the vibration isolation efficiency reaches more than 92%, the service life is long, the vibration of the fan can be effectively isolated, and the mounting base can be protected, as shown in fig. 4, a shell is arranged outside the elastic member 7, the shell is composed of an upper shell and a lower shell, the upper shell and the lower shell can slide relative to each other, a closed space is formed between the two shells, and the elastic member 7 is located inside the closed space, so that the elastic member 7 is protected, and meanwhile, the attractiveness is improved.
Specifically, the blades 4 are synthesized by high-strength glass fibers and resin, so that noise generated by airflow impacting metal is avoided; meanwhile, the impeller is light in weight and small in rotational inertia, the starting and stopping time of a motor is shortened, the whole service life of equipment is prolonged, the blades 4 are high-efficiency wing blade types, airflow is stable, and turbulent flow noise is reduced to a certain extent.
Specifically, as shown in fig. 5, the hub 3 and the corresponding blade 4 are connected by bolts, the hub 3 is in a sandwich type, one end of the blade 4 close to the hub 3 is provided with a blade handle, the blade handle is located inside the hub 3, and the hub 3 clamps the blade handle and fixes the blade handle by bolts, so that the hub 3 is a whole.
Specifically, the inner wall of the air duct 1 is provided with silencing cotton, the air duct 1 is integrally formed by flanging high-quality carbon steel, the roundness is high, the uniform and consistent gap between the blades 4 and the air duct 1 is guaranteed, and the turbulent flow noise is reduced; the galvanized silencing porous plate and the silencing cotton are additionally arranged on the inner wall of the air duct 1, so that the airflow noise can be effectively reduced; meanwhile, the air duct is light in weight, good in rigidity and light in load loaded on a roof.
Particularly, the two ends of the air duct 1 are respectively provided with the protective net 8, so that foreign matters are prevented from being sucked into the fan, the fan is protected, and meanwhile, the safety of a ventilation system is also protected.
The working principle is as follows: the utility model discloses during the use, drive wheel hub 3 by motor 2 and rotate for wheel hub 3 drives blade 4 and rotates the air supply, passes through as the air current the air outlet is flow equalized and is eliminated during stator 5, arranges in the same direction as the high-speed air current that comes out from dryer 1 pressurization, the turbulent noise that significantly reduces.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt prior art, and conventional model, including circuit connection adopts conventional connection mode among the prior art, does not detailed here again.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. Utility tunnel is with vertical installation axial fan of big amount of wind low noise, including dryer (1), motor (2), wheel hub (3) and blade (4), motor (2) are in through connecting plate fixed connection the inside axle center department of dryer (1), wheel hub (3) fixed connection be in on the output shaft of motor (2), blade (4) fixed connection be in on the lateral wall of wheel hub (3), its characterized in that: the air outlet flow equalizing noise elimination guide vane (5) is further included, and the air outlet flow equalizing noise elimination guide vane (5) is located at one end of the air duct (1).
2. The large-air-volume low-noise vertical installation axial flow fan for the comprehensive pipe rack according to claim 1, characterized in that: the air outlet flow equalizing noise reduction guide vane (5) comprises a mounting ring (501) and flow equalizing guide vanes (502), and the flow equalizing guide vanes (502) are uniformly distributed on the outer surface of the mounting ring (501).
3. The large-air-volume low-noise vertical axial flow fan for the comprehensive pipe rack according to claim 2, characterized in that: the flow equalizing guide vane (502) is made of a galvanized silencing porous plate, and the mounting ring (501) is made of a galvanized steel plate.
4. The large-air-volume low-noise vertical axial flow fan for the comprehensive pipe rack according to claim 3, characterized in that: the outer surface of the flow equalizing guide vane (502) is wrapped with sound attenuation cotton.
5. The large-air-volume low-noise vertical installation axial flow fan for the comprehensive pipe rack according to any one of claims 1 to 3, characterized in that: the outer surface of the air duct (1) is provided with a plurality of mounting feet (6), and the mounting feet (6) are respectively provided with an elastic part (7).
6. The large-air-volume low-noise vertical installation axial flow fan for the comprehensive pipe rack according to any one of claims 1 to 3, characterized in that: the blade (4) is synthesized by high-strength glass fiber and resin, and the blade (4) is of an efficient wing profile.
7. The large-air-volume low-noise vertical installation axial flow fan for the comprehensive pipe rack according to any one of claims 1 to 3, characterized in that: the hub (3) and the corresponding blade (4) are connected through bolts.
8. The large-air-volume low-noise vertical installation axial flow fan for the comprehensive pipe rack according to any one of claims 1 to 3, characterized in that: the inner wall of the air duct (1) is provided with silencing cotton.
9. The large-air-volume low-noise vertical installation axial flow fan for the comprehensive pipe rack according to any one of claims 1 to 3, characterized in that: and two ends of the air duct (1) are respectively provided with a protective net (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021097403.XU CN212774938U (en) | 2020-06-15 | 2020-06-15 | Vertical installation axial fan of big amount of wind low noise for utility tunnel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021097403.XU CN212774938U (en) | 2020-06-15 | 2020-06-15 | Vertical installation axial fan of big amount of wind low noise for utility tunnel |
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| CN212774938U true CN212774938U (en) | 2021-03-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577665A (en) * | 2020-06-15 | 2020-08-25 | 上海进贤机电科技有限公司 | Vertical installation axial fan of big amount of wind low noise for utility tunnel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577665A (en) * | 2020-06-15 | 2020-08-25 | 上海进贤机电科技有限公司 | Vertical installation axial fan of big amount of wind low noise for utility tunnel |
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