CN218407946U - Subway tunnel axial fan noise eliminator - Google Patents
Subway tunnel axial fan noise eliminator Download PDFInfo
- Publication number
- CN218407946U CN218407946U CN202222526980.1U CN202222526980U CN218407946U CN 218407946 U CN218407946 U CN 218407946U CN 202222526980 U CN202222526980 U CN 202222526980U CN 218407946 U CN218407946 U CN 218407946U
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- subway tunnel
- silencer
- axial flow
- flow fan
- pipe
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Abstract
The utility model belongs to city subway tunnel construction field especially relates to a subway tunnel axial fan noise eliminator, and this noise eliminator's one end is connected at axial fan's afterbody, and the air-supply line is connected to the other end, and this noise eliminator includes an at least section muffler pipe, the outside of muffler pipe is provided with the casing of compriseing galvanized steel sheet, the muffler pipe with be provided with in the clearance between the casing and inhale the sound cotton, the galvanized steel sheet thickness is 0.7mm, it is 100mm to inhale the cotton thickness of sound, the welding of axial fan afterbody and noise eliminator intersegmental section has the ring flange, adopts bolted connection between the ring flange. The utility model discloses a structure and assembly are simple, the convenient dismantlement to this device has obvious effect to reducing the fan noise, greatly reduced city subway tunnel noise.
Description
Technical Field
The utility model belongs to city subway tunnel construction field especially relates to a subway tunnel axial fan noise eliminator.
Background
Along with the enlargement of the national urbanization scale, the urban rail transit engineering becomes a main means for enlarging underground space and improving public transport capacity by virtue of the advantages of convenience, high efficiency, strong conveying capacity and the like, and subway stations and construction sites thereof are mostly positioned in main urban areas and core sections of cities, have dense peripheral population and busy traffic, are mostly close to peripheral residences, have complex peripheral environment and have high requirements on environmental protection and civilized construction. The urban subway tunnel construction operation needs 24 hours of uninterrupted operation every day, and how to effectively reduce the influence of construction noise on the surrounding environment becomes a key concern, and is highly valued and concerned by construction enterprises, owners and local government governing departments. Traditional city subway tunnel fan does not set up silencing device, and the life of peripheral residential area population is influenced to the fan noise, influences peripheral resident's rest when especially constructing at night.
Disclosure of Invention
In view of this, the utility model aims at providing a subway tunnel axial fan noise eliminator aims at solving the problem of subway tunnel fan noise.
In order to achieve the above purpose, the utility model provides the following technical scheme:
the utility model provides a subway tunnel axial fan noise eliminator, this noise eliminator's one end is connected at axial fan's afterbody, and the air-supply line is connected to the other end, and this noise eliminator includes an at least section muffler pipe, the outside of muffler pipe is provided with the casing of compriseing galvanized steel sheet, the muffler pipe with be provided with in the clearance between the casing and inhale the sound cotton.
Furthermore, the silencing device comprises two sections of silencing tubes, a shell consisting of galvanized steel sheets is arranged outside each section of silencing tube, and sound-absorbing cotton is arranged in a gap between each section of silencing tube and the corresponding shell.
Furthermore, the thickness of galvanized steel sheet is 0.7mm, inhale the thickness of sound cotton and be 100mm.
Further, the length of the silencing pipe is 1.2m, the outer diameter of the silencing pipe is 1.2m, and sound absorption cotton is fully paved in the length range of 1m in the middle of the silencing pipe along the radial direction.
Furthermore, a flange plate is welded at the tail of the axial flow fan, a corresponding flange plate is welded at the end part of the shell, and the two flange plates are connected through a bolt.
Furthermore, the two adjacent shells are welded with corresponding flange plates, and the two flange plates are connected through bolts.
Further, the bolt holes in the flange plate are arranged along the radial direction, the diameter of each bolt hole is 14mm, and the distance between the bolt holes is 100mm.
Furthermore, the silencing pipe and the air inlet pipe are sealed by adopting a sealant.
Further, the silencing pipe is a steel strip corrugated pipe.
The utility model has the advantages that:
1. the utility model discloses a structure and assembly are simple, convenient dismantlement.
2. The noise monitoring value of a certain subway tunnel before the installation of the silencer is 97.2 decibels, the noise monitoring value after the installation is 54.3 decibels, and the noise reduction effect is obvious.
3. The utility model discloses a bolt carries out the on-the-spot assembly, can not cause the damage to former component dismantling the in-process, is convenient for dismantle the component, and the later stage can continue to use.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the specification which follows.
Drawings
For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a view showing an installation structure of the muffler device of the present invention;
fig. 2 is a sectional view of the muffler device of the present invention;
fig. 3 is a structural diagram of the flange plate of the present invention.
Reference numerals: the air conditioner comprises an axial flow fan 1, a silencing pipe 2, an air inlet pipe 3, a shell 4, sound absorbing cotton 5, a flange plate 6, a bolt 7 and a bolt hole 61.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can be implemented or applied by other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples can be combined with each other without conflict.
Wherein the showings are for the purpose of illustration only and not for the purpose of limiting the same, the same is shown by way of illustration only and not in the form of limitation; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. In addition, the present disclosure may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
As shown in fig. 1-3, the utility model discloses a subway tunnel axial fan noise eliminator, this noise eliminator's one end is connected at axial fan 1's afterbody, and air-supply line 3 is connected to the other end, and this noise eliminator includes two sections muffler pipes 2, and muffler pipe 2's outside is provided with the casing 4 of compriseing galvanized steel sheet, is provided with in the clearance between muffler pipe 2 and the casing 4 and inhales the sound cotton 5. The utility model arranges the noise eliminator with soundproof cotton at the air inlet end of the axial flow fan 1, so that the noise of the axial flow fan 1 is greatly reduced; simultaneously, the utility model discloses a noise eliminator still has advantages such as simple structure, easy dismounting.
In this embodiment, the thickness of the galvanized steel sheet is 0.7mm, and the thickness of the sound-absorbing wool 5 is 100mm.
In this embodiment, the muffler pipe 2 has a length of 1.2m and an outer diameter of 1.2m, and the sound-absorbing cotton 5 is radially spread over a length of 1m in the middle of the muffler pipe.
In the embodiment, a flange plate 6 is welded at the tail part of the axial flow fan 1, a corresponding flange plate is welded at the end part of the shell 4, and the two flange plates are connected through a bolt 7; meanwhile, the shells 4 of the two sections of the silencing devices are also provided with corresponding flanges which are connected through bolts; the bolt holes 61 in the flange are arranged in the radial direction, the diameter of the bolt holes 61 is 14mm, and the distance between the bolt holes 61 is 100mm. The bolts are adopted for on-site assembly, the original component cannot be damaged in the dismounting process, the component is convenient to dismount, and the bolt can be continuously used in the later period.
In the embodiment, the muffler pipe 2 and the air inlet pipe 3 are sealed by sealant to prevent air leakage; the muffling pipe 2 is a steel strip corrugated pipe which has the advantages of pressure resistance, durability and the like.
The utility model discloses a work/implement/use principle is: (1) Determining the sizes of the muffling pipe 2 and the air inlet pipe 3 according to the model of the axial flow fan 1, welding a flange plate 6 at the tail part of the axial flow fan 1, installing a shell 4 consisting of galvanized steel plates outside the muffling pipe 2, welding the flange plate at the end part of the shell 4, and arranging soundproof cotton between the muffling pipe 2 and the shell 4; (2) The two sections of the silencing devices and the silencing device are connected with the axial flow fan through bolts; (3) An air inlet pipe 3 is installed, and the air inlet pipe and the noise eliminator are sealed through sealant.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or substituted by equivalents without departing from the spirit and scope of the technical solutions, which should be covered by the scope of the claims of the present invention.
Claims (9)
1. The utility model provides a subway tunnel axial fan noise eliminator, this noise eliminator's one end is connected at axial fan's afterbody, and the air-supply line is connected to the other end, its characterized in that, this noise eliminator include at least one section muffler pipe, the outside of muffler pipe is provided with the casing of compriseing galvanized steel sheet, the muffler pipe with be provided with in the clearance between the casing and inhale the sound cotton.
2. The axial flow fan silencer device for the subway tunnel according to claim 1, wherein the silencer device comprises two sections of silencer pipes, a shell body made of galvanized steel sheets is arranged outside each section of silencer pipe, and sound-absorbing cotton is arranged in a gap between each section of silencer pipe and the corresponding shell body.
3. The axial flow fan noise elimination device of the subway tunnel according to claim 1, wherein said galvanized steel plate has a thickness of 0.7mm, and said sound-absorbing cotton has a thickness of 100mm.
4. The axial flow fan silencer device for the subway tunnel according to claim 1, wherein the length of the silencer is 1.2m, the outer diameter of the silencer is 1.2m, and sound-absorbing cotton is fully paved in the length range of 1m in the middle of the silencer in the radial direction.
5. The axial flow fan muffler device for a subway tunnel according to claim 1, wherein a flange is welded to the tail of said axial flow fan, a corresponding flange is welded to the end of the casing, and the two flanges are connected by bolts.
6. The axial flow fan muffler device for a subway tunnel according to claim 1, wherein flanges corresponding to each other are welded between two adjacent casings, and the two flanges are connected by bolts.
7. The axial flow fan silencer assembly for the subway tunnel according to claim 5 or 6, wherein the bolt holes in the flange are arranged in a radial direction, the diameter of each bolt hole is 14mm, and the distance between the bolt holes is 100mm.
8. The axial flow fan muffler device for the subway tunnel according to claim 1, wherein the muffler pipe and the air inlet pipe are sealed by a sealant.
9. The axial flow fan noise elimination device for the subway tunnel according to claim 1, wherein said noise elimination tube is a steel strip corrugated tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222526980.1U CN218407946U (en) | 2022-09-23 | 2022-09-23 | Subway tunnel axial fan noise eliminator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222526980.1U CN218407946U (en) | 2022-09-23 | 2022-09-23 | Subway tunnel axial fan noise eliminator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218407946U true CN218407946U (en) | 2023-01-31 |
Family
ID=85035000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222526980.1U Active CN218407946U (en) | 2022-09-23 | 2022-09-23 | Subway tunnel axial fan noise eliminator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218407946U (en) |
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2022
- 2022-09-23 CN CN202222526980.1U patent/CN218407946U/en active Active
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