CN216692502U - Pipeline noise reduction structure and mounting structure - Google Patents

Pipeline noise reduction structure and mounting structure Download PDF

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Publication number
CN216692502U
CN216692502U CN202122857189.4U CN202122857189U CN216692502U CN 216692502 U CN216692502 U CN 216692502U CN 202122857189 U CN202122857189 U CN 202122857189U CN 216692502 U CN216692502 U CN 216692502U
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China
Prior art keywords
noise reduction
pipeline
frame
reduction structure
noise
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CN202122857189.4U
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Inventor
任玉凤
郭江海
魏普
钟振茂
于雅楠
江腾武
牛丛涵
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Huadian Heavy Industries Co Ltd
China Huadian Engineering Group Co Ltd
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Huadian Heavy Industries Co Ltd
China Huadian Engineering Group Co Ltd
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Abstract

The utility model provides a noise reduction structure of a pipeline and a mounting structure, comprising: a pipeline; a frame structure disposed outside the duct; the noise reduction structure is formed by laminating a plurality of layers of noise reduction materials and is hermetically arranged on the frame structure; and the plurality of opening and closing parts are arranged on the side wall of the noise reduction structure along the length direction of the frame structure. The support frame, the pipeline sets up on the support frame, frame construction depends on the support frame setting. According to the utility model, a certain space distance exists between the pipeline and the frame structure including the noise reduction structure, and the opening and closing part is opened to conveniently and rapidly overhaul and maintain certain specific parts or regions of the pipeline without dismantling the whole wrapping structure, so that the defect that the pipeline noise reduction structure influences the overhaul and maintenance efficiency in the prior art is overcome.

Description

Pipeline noise reduction structure and mounting structure
Technical Field
The utility model relates to the technical field of ambient noise elimination, in particular to a pipeline noise reduction structure and a mounting structure.
Background
In the industrial fields of electric power, petrochemical industry, metallurgical industry and the like, common transportation pipelines such as heating steam pipelines, oil pipelines, air supply/exhaust pipelines and the like easily generate large noises such as airflow noise, cavitation noise, friction noise, vibration noise and the like due to high-temperature and high-pressure flowing media in the pipelines, and the noises are transmitted to the external environment through the pipelines to cause environmental noise pollution.
The main mode of making an uproar falls among the prior art, as shown in fig. 1, inhale the sound insulation through a pipeline and wrap the structure, include radial direction from inside to outside successive layer cladding damping sound insulation layer in the pipeline outside, inhale sound cotton, metal sheet, damping sound insulation layer, inhale sound cotton and metal sheet, adopt the multilayer to wrap the structure and constitute 3 pairs of pipelines of making an uproar of falling and fall the processing of making an uproar.
Among the above-mentioned scheme, inhale the sound insulation and wrap the structure and adhere to on the pipeline outer wall, when needs overhaul and maintain certain specific site or the region of pipeline, need wrap up the structure again to whole and demolish, wrap up again after overhauing the completion, obviously, this kind of structure setting among the prior art is unfavorable for the maintenance and the maintenance of pipeline.
SUMMERY OF THE UTILITY MODEL
Therefore, the technical problem to be solved by the utility model is to overcome the defect that the pipeline noise reduction structure influences the overhauling and maintaining efficiency in the prior art.
To this end, the present invention provides a noise reduction structure for a pipe, comprising:
a pipeline;
a frame structure disposed outside the duct;
the noise reduction structure is formed by laminating a plurality of layers of noise reduction materials and is hermetically arranged on the frame structure;
and the plurality of opening and closing parts are arranged on the side wall of the noise reduction structure along the length direction of the frame structure.
Optionally, the opening and closing part includes: and the door leaf is rotatably connected to the outer wall of the noise reduction structure.
Optionally, the door leaf is rotatably connected to the outer wall of the noise reduction structure by a hinge.
Optionally, a handle and a fastener are provided on the door leaf.
Optionally, the door leaf is made of the same material as the noise reduction structure.
Optionally, the opening and closing part is an access door.
Optionally, the noise reduction structure sequentially comprises from inside to outside: sound absorption material, sound insulation material, elastic material, sound insulation material.
Optionally, the noise reduction structure sequentially comprises from inside to outside: glass wool, galvanized steel sheets, damping layers and galvanized steel sheets.
Optionally, the frame structure is rectangular and long-strip-shaped and is arranged outside the pipe, and the noise reduction structure is mounted on the frame structure by screws and enables the pipe to be in a sealing state in the circumferential direction.
The present invention also provides a mounting structure including:
the pipeline noise reduction structure of any one of the above aspects;
the support frame, the pipeline sets up on the support frame, frame construction depends on the support frame setting.
The technical scheme of the utility model has the following advantages:
1. the utility model provides a noise reduction structure for a pipeline, which comprises: a pipeline; a frame structure disposed outside the duct; the noise reduction structure is formed by laminating a plurality of layers of noise reduction materials and is hermetically arranged on the frame structure; and the plurality of opening and closing parts are arranged on the side wall of the noise reduction structure along the length direction of the frame structure.
The utility model provides a pipeline noise reduction structure, wherein a frame structure is arranged at a position away from a pipeline by a certain distance, the frame structure is arranged at the outer side of the pipeline along the circumferential direction of the pipeline, a noise reduction structure formed by laminating a plurality of layers of noise reduction materials is hermetically arranged on the frame structure to play a noise reduction role, and a plurality of opening and closing parts are arranged on the side wall of the noise reduction structure along the length direction of the frame structure to conveniently and quickly overhaul and maintain the pipeline by opening the opening and closing parts.
Among the prior art, the main mode of making an uproar of falling is to inhale the sound insulation through a pipeline and wraps the structure, include radial direction from inside to outside successive layer cladding at the damping sound insulation layer in the pipeline outside, inhale sound cotton, metal sheet, damping sound insulation layer, inhale sound cotton and metal sheet, adopt the multilayer to wrap the structure constitution and fall the noise structure and make an uproar the processing of making an uproar to the pipeline. Inhale the sound insulation and wrap the structure and adhere to on the pipeline outer wall, when certain specific site or the region of pipeline were overhauld to needs, need wrap up the structure and demolish whole, wrap up again after overhauing the completion, obviously, this kind of structure setting among the prior art is unfavorable for the maintenance and the maintenance of pipeline.
According to the utility model, the frame structure is arranged at a position with a certain distance from the pipeline, the noise reduction structure formed by laminating a plurality of layers of noise reduction materials is hermetically arranged on the frame structure to play a role in noise reduction, meanwhile, the frame structure is arranged to ensure that the noise reduction structure is separated from the pipeline by a certain distance instead of being attached to the outer wall of the pipeline, a plurality of opening and closing parts are arranged on the side wall of the noise reduction structure along the length direction of the frame structure, a certain space distance exists between the pipeline and the frame structure including the noise reduction structure, and the opening and closing parts are opened to conveniently and quickly overhaul and maintain certain specific parts or regions of the pipeline, so that the whole binding structure is not required to be dismantled, and the defect that the pipeline noise reduction structure influences the overhaul and maintenance efficiency in the prior art is overcome.
2. The utility model provides a noise reduction structure for a pipeline, wherein the opening and closing part comprises: and the door leaf is rotatably connected to the outer wall of the noise reduction structure.
Rotationally connect the door leaf on the outer wall of making an uproar structure of falling, overhaul and maintain certain specific site or region of pipeline through opening the convenient quick of door leaf, need not wrap the structure to whole and demolish, overcome among the prior art defect that the structure influence of making an uproar overhauld and maintenance efficiency was fallen to the pipeline.
3. The utility model provides a pipeline noise reduction structure, wherein a door leaf is rotatably connected to the outer wall of the noise reduction structure through a hinge.
The door leaf is connected to the outer wall of the noise reduction structure through the hinge to realize the rotatable connection of the door leaf so as to complete the opening and closing action.
4. The utility model provides a pipeline noise reduction structure, wherein a handle and a fastener are arranged on a door leaf.
The door leaf is provided with a handle which is convenient for operating the door leaf to open or close, and the door leaf is provided with a fastener which is convenient for fixing the movable end of the door leaf on the outer wall of the noise reduction structure.
5. The utility model provides a pipeline noise reduction structure, wherein the door leaf is made of the same material as the noise reduction structure.
The material of door leaf and the structure of making an uproar are the same so that the door leaf that sets up possesses the function of making an uproar equally, can not influence the holistic noise reduction effect of the structure of making an uproar of falling pipeline.
6. The utility model provides a noise reduction structure for a pipeline, wherein an opening and closing part is an access door.
The portion of opening and shutting is the access door, overhauls and maintains through opening some specific site of access door convenient and fast to the pipeline or region, need not wrap the structure to whole and demolish, overcomes among the prior art defect that the structure influence of making an uproar was examined and repaired and maintenance efficiency is fallen to the pipeline.
7. The utility model provides a pipeline noise reduction structure, which sequentially comprises the following components from inside to outside: sound absorption material, sound insulation material, elastic material, sound insulation material.
The noise reduction structure has the advantages that the sound absorption and insulation and vibration reduction effects are achieved by arranging the sound absorption material, the sound insulation material and the elastic material, and the noise reduction function of the conveying pipeline is achieved to a large extent.
8. The utility model provides a pipeline noise reduction structure, which sequentially comprises the following components from inside to outside: glass wool, galvanized steel sheets, damping layers and galvanized steel sheets.
The glass wool is used as a sound absorption material, the galvanized steel sheet is used as a sound insulation material, the damping layer is used as an elastic material, sound absorption and insulation and vibration reduction effects are achieved, and the noise reduction function of the conveying pipeline is achieved to a large extent.
9. The utility model provides a pipeline noise reduction structure, wherein a frame structure is arranged on the outer side of a pipeline in a rectangular long strip shape, and the noise reduction structure is installed on the frame structure through screws and enables the pipeline to be in a sealing state in the circumferential direction.
Frame construction is rectangular long banding setting and is in for falling the outside of pipeline, for falling the structure of making an uproar provides braced frame, fall the structure of making an uproar by the mounting screw on frame construction, frame construction with fall the structural mounting of making an uproar and accomplish the back and guarantee that the pipeline is in encapsulated situation in week, realize the at utmost to transporting the function of making an uproar of pipeline.
10. The present invention also provides a mounting structure including: the pipeline noise reduction structure of any one of the above advantages; the support frame, the pipeline sets up on the support frame, frame construction depends on the support frame setting.
The pipeline sets up on the support frame, further reduce the noise influence that the pipeline vibration brought, frame construction depends on the support frame sets up to make the pipeline be in encapsulated situation in circumference, realize the at utmost to the noise reduction effect of transporting the pipeline.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a pipeline sound absorption and insulation wrapping structure in the prior art;
FIG. 2 is a schematic structural diagram of a noise reduction structure and an installation structure for a pipeline according to the present invention;
FIG. 3 is a schematic structural view of the opening/closing portion according to the present invention;
fig. 4 is a partially enlarged view of a portion a in fig. 2.
Description of reference numerals:
1. a pipeline; 2. a frame structure; 3. a noise reduction structure; 31. glass wool; 32. a galvanized steel sheet; 33. a damping layer; 4. an opening and closing part; 41. a door leaf; 42. loose leaves; 43. a handle; 44. a fastener; 5. a support frame.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
The present embodiment provides a noise reduction structure 3 for a pipeline, as shown in fig. 2 to 4, including:
the pipeline 1 is a common transportation pipeline in the industrial fields of electric power, petrochemical industry, metallurgical industry and the like, such as a heating steam pipeline, an oil pipeline, an air supply/exhaust pipeline and the like, high-temperature and high-pressure flowing media in the pipelines easily generate large noise, such as airflow noise, cavitation noise, friction noise, vibration noise and the like, and the noise is transmitted to the external environment through the pipeline 1 to cause environmental noise pollution.
Frame construction 2 sets up the outside of pipeline 1, along the length direction of pipeline 1, sets up at a distance of 50mm-70mm with pipeline 1, frame construction 2's material need have sufficient intensity in order to support subsequent noise reduction structure 3 and the weight of portion 4 that opens and shuts can, select angle steel or fossil fragments as frame construction 2's main material usually.
And the noise reduction structure 3 is formed by laminating a plurality of layers of noise reduction materials, and the noise reduction structure 3 is hermetically arranged on the frame structure 2.
Specifically, as shown in fig. 4, the noise reduction structure 3 is formed by stacking a plurality of noise reduction materials, and the noise reduction materials include: the noise reduction material comprises a sound absorption material, a sound insulation material, an elastic material and the like, and the selection and arrangement sequence of the specific noise reduction material can meet the purpose of noise reduction.
A plurality of portion 4 that opens and shuts, follow frame construction 2's length direction sets up on the lateral wall of structure 3 of making an uproar falls, portion 4 that opens and shuts can set up one at every certain distance, also can set up in some specific site or region, easily cause damage or the position that often needs maintenance such as the junction of pipeline 1, when some specific site or regional trouble or needs routine maintenance of pipeline 1, there is certain spatial distance pipeline 1 and frame construction 2 including falling between the structure 3 of making an uproar, overhaul and maintain some specific site or region of pipeline 1 through opening portion 4 that opens and shuts convenient quick.
The utility model provides a structure 3 of making an uproar falls in pipeline, as shown in fig. 2, fig. 3, set up frame construction 2 in the position apart from pipeline 1 certain distance, frame construction 2 sets up in the outside of pipeline 1 along 1 circumference of pipeline, the structure 3 of making an uproar falls that the range upon range of setting forms by the material range upon range of falling a plurality of layers again and sets up on frame construction 2 with sealing, in order to play the effect of making an uproar, and set up a plurality of portion 4 that opens and shuts on the lateral wall of the structure 3 of making an uproar falls along the length direction of frame construction 2, in order to overhaul and maintain pipeline 1 through opening the convenient quick portion 4 that opens and shuts.
In the prior art, as shown in fig. 1, the main noise reduction mode is to wrap the structure through a sound absorption and insulation of the pipeline, including the radial direction from inside to outside layer-by-layer cladding at the damping sound insulation layer outside the pipeline 1, sound absorption cotton, metal plate, damping sound insulation layer, sound absorption cotton and metal plate, and the multilayer wrapping structure is adopted to form the noise reduction structure 3 to reduce the noise of the pipeline 1. Inhale the sound insulation and wrap the structure and adhere to on 1 outer wall of pipeline, when certain specific site or the region of pipeline 1 overhauls as needs, need wrap up the structure again to whole and demolish, wrap up again after overhauing the completion, obviously, this kind of structure setting among the prior art is unfavorable for pipeline 1's maintenance and maintenance.
In this embodiment, set up frame construction 2 in the position apart from pipeline 1 certain distance, the structure of making an uproar 3 that falls that will be formed by the range upon range of setting of a plurality of layers of material of making an uproar sets up on frame construction 2 sealedly again, in order to play the effect of making an uproar, also guarantee to fall to have a certain distance between structure of making an uproar 3 and pipeline 1 through setting up frame construction 2 simultaneously, rather than attaching to on 1 outer wall of pipeline, and set up a plurality of portion 4 that opens and shuts along frame construction 2's length direction and fall on the lateral wall of structure 3 of making an uproar, overhaul and maintain certain specific position or region of pipeline 1 fast through opening the portion 4 that opens and shuts, need not demolish whole structure of wrapping, overcome among the prior art pipeline 1 and fall the defect that structure 3 influences maintenance and maintenance efficiency of making an uproar.
In addition to the above-described embodiments, as a further limited embodiment, as shown in fig. 3, the opening/closing portion 4 includes:
a door leaf 41 rotatably connected to the outer wall of the noise reducing structure 3.
Specifically, as shown in fig. 3, rotationally connect door leaf 41 on the outer wall of making an uproar structure 3 falls, overhaul and maintain certain specific site or region of pipeline 1 through opening door leaf 41 is convenient quick, need not demolish whole structure of wrapping, overcome among the prior art pipeline 1 and fall the defect that structure 3 influences maintenance and maintenance efficiency of making an uproar.
On the basis of the above embodiment, as a further limited embodiment, as shown in fig. 3, the door leaf 41 is rotatably connected to the outer wall of the noise reduction structure 3 through a hinge 42 to realize the rotatable connection of the door leaf 41 so as to complete the opening and closing action.
On the basis of the above embodiments, as a further limited embodiment, as shown in fig. 3, a handle 43 and a fastening member 44 are arranged on the door leaf 41, the handle 43 is arranged on the door leaf 41 to facilitate the operation of opening or closing the door leaf 41, and the fastening member 44 is arranged on the door leaf 41 to facilitate the fixing of the movable end of the door leaf 41 on the outer wall of the noise reduction structure 3, so as to ensure the sealing effect of the noise reduction structure 3 and further ensure the noise reduction effect of the pipeline noise reduction structure.
In addition to the above-described embodiments, as a more limited embodiment, the material of the door 41 is the same as that of the noise reduction structure 3.
Specifically, the material of the door leaf 41 is the same as the noise reduction structure 3, so that the door leaf 41 provided with the noise reduction structure also has the noise reduction function, and the overall noise reduction effect of the pipeline noise reduction structure is not affected.
In addition to the above embodiments, as a further limited embodiment, the opening/closing portion 4 is an access door.
Specifically, the portion 4 that opens and shuts is the access door, follows the length direction setting of frame construction 2 is in on the lateral wall of the structure of making an uproar 3 falls, through opening access door convenient and quick overhauls and maintain certain specific site or region of pipeline 1, need not demolish whole structure of wrapping, overcome among the prior art the pipeline fall make an uproar 3 influence the defect of overhauing and maintenance efficiency.
On the basis of the above embodiment, as a further limited embodiment, as shown in fig. 4, the noise reduction structure 3 sequentially comprises, from inside to outside: sound absorption material, sound insulation material, elastic material and sound insulation material.
Specifically, noise reduction structure 3 plays sound absorption and insulation and vibration reduction effects through setting up sound absorption material, sound insulation material, elastic material, has realized the function of making an uproar of falling to the transportation pipeline to a great extent. The elastic material is mainly used for reducing noise generated by vibration of the flowing medium with high temperature and high pressure in the pipeline 1.
On the basis of the above embodiment, as a further limited embodiment, as shown in fig. 4, the noise reduction structure 3 sequentially comprises, from inside to outside: glass wool 31, galvanized steel sheet 32, damping layer 33, galvanized steel sheet 32.
Specifically, the glass wool 31 is used as a sound absorption material, the galvanized steel sheet 32 is used as a sound insulation material, and the damping layer 33 is used as an elastic material, so that sound absorption and insulation and vibration reduction effects are achieved, and the noise reduction function of the conveying pipeline is achieved to a large extent. The damping layer 33 is mainly used for reducing noise generated by vibration of the flowing medium with high temperature and high pressure in the pipeline 1.
On the basis of the above embodiment, as a further limited embodiment, as shown in fig. 2, the frame structure 2 is provided in a rectangular elongated shape on the outside of the duct 1, and the noise reduction structure 3 is mounted on the frame structure 2 by screws and makes the duct 1 in a sealed state in the circumferential direction.
Specifically, frame construction 2 is the long banding setting of rectangle and is in the outside of pipeline 1 provides braced frame for falling structure 3 of making an uproar, fall structure 3 of making an uproar and install on frame construction 2 by the screw, frame construction 2 and fall and guarantee that pipeline 1 is in encapsulated situation in week after 3 installations of structure of making an uproar are accomplished, realize the function of making an uproar of at utmost to the transportation pipeline.
Example 2
The present embodiment provides a mounting structure, as shown in fig. 2, including:
the pipe noise reduction structure 3 described in embodiment 1;
and the supporting frame 5 is used for arranging the pipeline 1 on the supporting frame 5, and the frame structure 2 is attached to the supporting frame 5.
Specifically, pipeline 1 sets up on support frame 5, support frame 5 installs on the basal plane to set up vibration damper in the mounted position of support frame 5 and basal plane, further reduce the noise influence that 1 vibration of pipeline brought, frame construction 2 depends on support frame 5 sets up to make pipeline 1 be in encapsulated situation in circumference, realize the function of making an uproar of falling of the transportation pipeline of at utmost. The portion 4 that opens and shuts that sets up on the structure 3 of making an uproar falls in the pipeline simultaneously, when certain specific site or the regional trouble of pipeline 1 or need daily maintenance, because pipeline 1 and frame construction 2 have certain spatial distance including falling between the structure 3 of making an uproar, overhauls and maintains certain specific site or region of pipeline 1 through opening that the portion 4 that opens and shuts is convenient quick, overcomes among the prior art defect that the structure 3 of making an uproar falls in the pipeline influences maintenance and maintenance efficiency.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims (10)

1. A noise reducing structure for a pipe, comprising:
a conduit (1);
a frame structure (2) arranged outside the pipe (1);
the noise reduction structure (3) is formed by laminating a plurality of layers of noise reduction materials, and the noise reduction structure (3) is hermetically arranged on the frame structure (2);
the plurality of opening and closing parts (4) are arranged on the side wall of the noise reduction structure (3) along the length direction of the frame structure (2).
2. The duct noise reduction structure according to claim 1, wherein the open-close portion (4) includes: a door leaf (41) rotatably connected to the outer wall of the noise reducing structure (3).
3. A pipe noise reducing structure according to claim 2, characterized in that the door leaf (41) is rotatably connected to the outer wall of the noise reducing structure (3) by means of hinges (42).
4. A pipe noise reduction structure according to claim 3, wherein a handle (43) and a fastener (44) are provided on the door leaf (41).
5. A pipe noise reducing structure according to claim 4, characterized in that the door leaf (41) is of the same material as the noise reducing structure (3).
6. A pipe noise reduction structure according to any one of claims 2 to 5, wherein the opening and closing part (4) is an access door.
7. The pipe noise reduction structure according to claim 1, wherein the noise reduction structure (3) comprises, from inside to outside: sound absorption material, sound insulation material, elastic material, sound insulation material.
8. The pipe noise reduction structure according to claim 7, wherein the noise reduction structure (3) comprises, from inside to outside: glass wool (31), a galvanized steel sheet (32), a damping layer (33) and a galvanized steel sheet (32).
9. A duct noise reduction structure according to claim 1, characterized in that the frame structure (2) is provided in the form of a rectangular strip outside the duct (1), and the noise reduction structure (3) is mounted on the frame structure (2) by screws and keeps the duct (1) in a sealed state in the circumferential direction.
10. A mounting structure, characterized by comprising:
a pipe noise reducing structure according to any one of claims 1 to 9;
support frame (5), pipeline (1) sets up on support frame (5), frame construction (2) depend on support frame (5) set up.
CN202122857189.4U 2021-11-19 2021-11-19 Pipeline noise reduction structure and mounting structure Active CN216692502U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122857189.4U CN216692502U (en) 2021-11-19 2021-11-19 Pipeline noise reduction structure and mounting structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122857189.4U CN216692502U (en) 2021-11-19 2021-11-19 Pipeline noise reduction structure and mounting structure

Publications (1)

Publication Number Publication Date
CN216692502U true CN216692502U (en) 2022-06-07

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CN202122857189.4U Active CN216692502U (en) 2021-11-19 2021-11-19 Pipeline noise reduction structure and mounting structure

Country Status (1)

Country Link
CN (1) CN216692502U (en)

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