Porous channel type pipeline silencer
The design of the porous channel type pipe silencer solves the problems of unstable silencer installation and single sound absorption function, achieves a stable silencer effect under different working conditions, and enhances the quietness of the pipeline system.
Patent Information
- Application Number
- CN202423102938.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-12-16
AI Technical Summary
Existing pipe silencers lack reasonable design in terms of installation and positioning, and are easily displaced due to vibration and fluid impact. In addition, their sound absorption function is single, making it difficult to cope with the complex and diverse noise spectrum and noise changes under different working conditions, resulting in unstable silencer effect.
It adopts a porous channel structure, including an annular plate, a sound-absorbing column and a sound-absorbing ring. The sound-absorbing ring is rotatably arranged outside the sound-absorbing column. Combined with elastic protrusions, counterweights and limit rings, dynamic sound absorption and friction silencer are achieved to enhance the silencer effect.
Ensure that the silencer is firmly installed in the pipeline, adapt to noise changes under complex working conditions, improve the silencer effect, reduce noise propagation outward, and provide a stable acoustic environment.
Smart Images
Figure CN223388252U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipeline silencers, and in particular to a porous channel type pipeline silencer. Background Art
[0002] In numerous industrial production and various building and facility pipeline systems, fluid flow often generates noise due to various factors. This noise not only causes severe noise pollution to the surrounding environment, disrupting people's normal lives and work, as well as the normal operation of surrounding equipment, but may also violate relevant environmental noise standards, causing compliance issues for businesses. Therefore, how to effectively reduce the noise generated by fluid flow in pipelines has become a critical issue that needs to be addressed in related fields.
[0003] Traditional pipe silencers have numerous shortcomings in practical application. Many lack proper design for installation and positioning, making it difficult to maintain a stable and accurate position within the piping system. This can lead to the silencer shifting over time due to factors such as pipe vibration and fluid impact, affecting the proper functioning of the internal silencer components and undermining the intended noise reduction effect.
[0004] Some existing silencers have limitations in expanding and strengthening their sound absorption functions. They often rely solely on a single sound-absorbing component or a simple sound-absorbing structure to handle noise. They lack multi-level and multi-angle sound absorption designs and are unable to cope with the complex and diverse noise spectrum and noise changes under different working conditions. This makes the silencer effect unstable in different scenarios and unable to comprehensively and effectively reduce the noise generated by the fluid in the pipeline. Utility Model Content
[0005] The utility model provides a multi-hole channel type pipeline silencer, which solves the problem that the pipeline silencer in the prior art can cope with a limited number of noise types.
[0006] The technical solution of the utility model is as follows: a porous channel type pipe silencer, comprising:
[0007] The annular plate is used to be placed between two flange pipes.
[0008] A sound-absorbing column is provided on the annular plate body. The sound-absorbing column is used to be inserted into the flange tube. The outer diameter of the sound-absorbing column is smaller than the inner diameter of the flange tube. The sound-absorbing column is provided with a plurality of fluid channels along its axial direction.
[0009] A sound-absorbing ring is sleeved outside the sound-absorbing column, and the outer diameter of the sound-absorbing ring is smaller than the inner diameter of the flange pipe.
[0010] As a further technical solution,
[0011] The sound absorbing ring is rotatably arranged outside the sound absorbing column.
[0012] As a further technical solution,
[0013] The inner diameter of the sound-absorbing ring is greater than the outer diameter of the sound-absorbing column, and an elastic protrusion is provided on the inner wall of the sound-absorbing ring.
[0014] As a further technical solution,
[0015] There are at least three elastic protrusions, and the elastic protrusions are evenly distributed along the circumference of the sound absorbing ring.
[0016] As a further technical solution, it also includes:
[0017] A counterweight is provided on the sound-absorbing ring, and the center of gravity of the sound-absorbing ring is close to the counterweight.
[0018] As a further technical solution,
[0019] An annular sliding groove is provided on the inner wall of the sound-absorbing ring, and the counterweight block is slidably arranged in the annular sliding groove.
[0020] As a further technical solution,
[0021] The annular plate body is in the shape of a circular ring, the sound-absorbing column body is in the shape of a cylinder, and the annular plate body and the sound-absorbing column body are coaxial.
[0022] As a further technical solution,
[0023] The sound-absorbing column is a glass wool column, a rock wool column, a mineral wool column or a cotton and linen column.
[0024] As a further technical solution,
[0025] A plurality of sound-absorbing rings are arranged along the axial direction of the sound-absorbing column.
[0026] As a further technical solution, it also includes:
[0027] A limiting ring is sleeved outside the sound-absorbing column, and the limiting ring is close to the free end of the sound-absorbing column.
[0028] The working principle and beneficial effects of the utility model are as follows:
[0029] In the utility model, the annular plate is arranged between the two flange pipes, which plays a key role in connection and positioning. It determines the installation position of the entire silencer in the pipeline system, so that the silencer can be firmly integrated into the pipeline line, ensuring accurate docking with the front and rear flange pipes, providing a stable support foundation for subsequent silencer components such as sound-absorbing columns and sound-absorbing rings to function, ensuring the relative position of the entire silencer in the pipeline is fixed, and avoiding the influence of position offset on the silencer effect and the normal operation of the pipeline.
[0030] The sound-absorbing column is arranged on the annular plate and is used to be inserted into the flange pipe. The design of its outer diameter being smaller than the inner diameter of the flange pipe creates a certain gap between the sound-absorbing column and the flange pipe, ensuring that noise will not be transmitted directly to the flange pipe through the sound-absorbing column, thereby reducing noise.
[0031] The sound-absorbing ring is positioned outside the sound-absorbing column, with an outer diameter smaller than the inner diameter of the flange pipe. This arrangement ensures that after the fluid passes through the fluid channel of the sound-absorbing column, the outward-propagating sound waves will come into contact with the sound-absorbing ring. The sound-absorbing ring, with its inherent sound-absorbing properties, further absorbs the sound waves transmitted from the fluid channel, providing auxiliary sound attenuation. This enhances the noise control capabilities of the entire muffler, improves the silencing effect, and reduces noise transmission outside the pipe. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.
[0033] Figure 1 This is a schematic diagram of the structure of the utility model in use state;
[0034] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model;
[0035] Figure 3 This is a right side structural diagram of the utility model;
[0036] Figure 4 For this utility model Figure 3 Schematic diagram of the AA cross-section structure;
[0037] Figure 5 For this utility model Figure 4 Middle B is a schematic diagram of a partially enlarged structure;
[0038] In the figure: 1-annular plate, 2-sound-absorbing column, 21-fluid channel, 3-sound-absorbing ring, 31-elastic protrusion, 32-counterweight, 33-annular slide, 4-limiting ring, 9-flange pipe. DETAILED DESCRIPTION
[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive work.
[0040] To simplify the drawings, only the parts relevant to the utility model are schematically shown in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically shown or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."
[0041] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.
[0042] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0043] like Figures 1 to 5 As shown, the utility model proposes a porous channel type pipe silencer, comprising: an annular plate body 1, the annular plate body 1 is used to be arranged between two flange pipes 9, a sound-absorbing column 2 is arranged on the annular plate body 1, the sound-absorbing column 2 is used to be inserted into the flange pipe 9, the outer diameter of the sound-absorbing column 2 is smaller than the inner diameter of the flange pipe 9, a plurality of fluid channels 21 are opened on the sound-absorbing column 2 along its axial direction, and a sound-absorbing ring 3 is sleeved on the outside of the sound-absorbing column 2, and the outer diameter of the sound-absorbing ring 3 is smaller than the inner diameter of the flange pipe 9.
[0044] In this embodiment, the annular plate 1 is arranged between the two flange pipes 9, playing a key role in connection and positioning. It determines the installation position of the entire silencer in the pipeline system, so that the silencer can be firmly integrated into the pipeline line, ensuring accurate docking with the front and rear flange pipes 9, and providing a stable support foundation for subsequent silencer components such as the sound-absorbing column 2 and the sound-absorbing ring 3 to function, ensuring the relative position of the entire silencer in the pipeline is fixed, and avoiding the impact of position offset on the silencer effect and the normal operation of the pipeline.
[0045] The sound-absorbing column 2 is arranged on the annular plate body 1 and is used to be inserted into the flange tube 9. The design of its outer diameter is smaller than the inner diameter of the flange tube 9, so that there is a certain gap between the sound-absorbing column 2 and the flange tube 9, ensuring that noise will not be transmitted directly to the flange tube 9 through the sound-absorbing column 2, thereby reducing noise.
[0046] The sound-absorbing ring 3 is mounted outside the sound-absorbing column 2 and has an outer diameter smaller than the inner diameter of the flange pipe 9. This arrangement ensures that after the fluid passes through the fluid channel 21 of the sound-absorbing column 2, the outward-propagating sound waves will come into contact with the sound-absorbing ring 3. The sound-absorbing ring 3 utilizes its inherent sound-absorbing properties to further absorb the sound waves transmitted from the fluid channel 21, thus providing auxiliary sound attenuation. This enhances the noise control capability of the entire muffler, improves the silencing effect, and reduces the propagation of noise outside the pipeline.
[0047] Furthermore, the sound absorbing ring 3 is rotatably arranged outside the sound absorbing column 2 .
[0048] In this embodiment, the sound-absorbing ring 3 is rotatably mounted outside the sound-absorbing column 2, endowing it with unique dynamic sound-absorbing properties. During muffler operation, the noise generated by the fluid flow within the pipe and the resulting vibrations become the key factors triggering the rotation of the sound-absorbing ring 3. Once noise is generated and vibrations are transmitted to the sound-absorbing ring 3, the ring 3 begins to rotate, converting some of the noise into kinetic energy. Furthermore, during this rotation, friction is generated between the sound-absorbing ring 3 and the sound-absorbing column 2, or between the ring 3 and the surrounding air, among other media. This friction is not negative; rather, it cleverly converts noise energy into heat, achieving additional noise reduction. For example, in noise environments of varying intensities, the rotation speed and degree of friction of the sound-absorbing ring 3 will vary accordingly with the vibration amplitude, allowing the noise reduction effect to be automatically adjusted to a certain extent based on the actual noise level. Through this dynamic sound absorption and friction noise reduction mechanism, the sound-absorbing ring 3 avoids the possible sound absorption limitations of traditional fixed sound-absorbing structures, better adapts to the dynamic changes of noise under various complex working conditions, continuously and effectively improves the sound absorption effect of the entire silencer, and ensures that the pipeline system can maintain a relatively quiet acoustic environment under different working conditions.
[0049] Furthermore, the inner diameter of the sound absorbing ring 3 is larger than the outer diameter of the sound absorbing column 2 , and an elastic protrusion 31 is provided on the inner wall of the sound absorbing ring 3 .
[0050] In this embodiment, the inner diameter of the sound-absorbing ring 3 is larger than the inner diameter of the sound-absorbing column 2, so that there is a certain amount of space for movement between the sound-absorbing ring 3 and the sound-absorbing column 2. While ensuring that the sound-absorbing ring 3 has room for rotation, a certain amount of space for vibration can also be given to the sound-absorbing ring 3. Therefore, the vibration caused by the noise can be transmitted to the sound-absorbing ring 3, causing the sound-absorbing ring 3 to vibrate. Part of the noise is converted into vibration of the sound-absorbing ring 3 and consumed. During the vibration process, the elastic protrusion 31 can play a buffering role to prevent the sound-absorbing ring 3 from colliding with the sound-absorbing column 2 and generating more noise.
[0051] Furthermore, there are at least three elastic protrusions 31 , and the elastic protrusions 31 are evenly distributed along the circumference of the sound absorbing ring 3 .
[0052] In this embodiment, at least three elastic protrusions 31 are provided, which can prevent the sound-absorbing ring 3 from directly contacting and colliding with the sound-absorbing column 2 to generate noise.
[0053] Furthermore, a counterweight 32 is included. The counterweight 32 is arranged on the sound-absorbing ring 3 , and the center of gravity of the sound-absorbing ring 3 is close to the counterweight 32 .
[0054] In this embodiment, under the action of gravity, the counterweight block 32 can always keep the sound-absorbing ring 3 at the bottom position of the counterweight block 32, while also allowing the sound-absorbing ring 3 to maintain a certain posture and limiting the reciprocating rotation of the sound-absorbing ring 3 within a small range to prevent excessive movement and noise.
[0055] Furthermore, an annular sliding groove 33 is provided on the inner wall of the sound absorbing ring 3 , and the counterweight block 32 is slidably arranged in the annular sliding groove 33 .
[0056] In this embodiment, during muffler operation, as operating conditions such as fluid flow rate, flow velocity, and pipe vibration continuously change, the rotational state and force applied to the sound-absorbing ring 3 also change accordingly, dynamically altering the center of gravity balance requirements. The sliding counterweight 32 can flexibly move within the annular slot 33 in response to these changes, adjusting the center of gravity of the sound-absorbing ring 3 in real time. This allows for dynamic adjustment of the rotational balance of the sound-absorbing ring 3 and allows for the adjustment of the positions of various components of the sound-absorbing ring 3.
[0057] Furthermore, the annular plate body 1 is in the shape of a circular ring, the sound-absorbing column body 2 is in the shape of a cylinder, and the annular plate body 1 and the sound-absorbing column body 2 are coaxial.
[0058] In this embodiment, after the fluid enters the pipe section where the silencer is located, thanks to this coaxial structure, the fluid can pass through the annular plate 1 in sequence along a uniform and symmetrical path and smoothly enter the fluid channel 21 of the sound-absorbing column 2, effectively avoiding adverse flow phenomena such as excessive local flow velocity and increased turbulence that may be caused by structural asymmetry.
[0059] Furthermore, the sound-absorbing column 2 is a glass wool column, a rock wool column, a mineral wool column or a cotton and linen column.
[0060] In this embodiment, by providing a variety of material options, the silencer can flexibly select the most suitable sound-absorbing column 2 material based on factors such as the specific pipeline fluid properties, noise characteristics, and usage environment, thereby achieving the best sound absorption effect, improving the applicability and practicality of the silencer in different scenarios, and better meeting the needs of various users for noise control and other related functions in different pipeline application scenarios.
[0061] Furthermore, a plurality of sound absorbing rings 3 are provided along the axial direction of the sound absorbing column 2 .
[0062] In this embodiment, a plurality of sound-absorbing rings 3 are provided along the axial direction of the sound-absorbing column 2 to form a multi-layer sound-absorbing structure. This design significantly enhances the sound-absorbing ability of the muffler in many aspects and effectively improves the comprehensive sound-absorbing effect.
[0063] Furthermore, it also includes a limiting ring 4 , which is sleeved on the outside of the sound-absorbing column 2 and is close to the free end of the sound-absorbing column 2 .
[0064] In this embodiment, Figure 4 As shown, the end of the sound-absorbing column 2 away from the annular plate body 1 is a free end. Since there is a gap between the sound-absorbing column 2 and the inner wall of the flange tube 9, the sound-absorbing column 2 is completely stressed by the connection with the annular plate body 1. It may be offset after long-term use, affecting the action of the sound-absorbing ring 3 and the overall sound-absorbing effect. The limit ring 4 can act on the sound-absorbing column 2 and the flange tube 9 to play a limiting role, which is beneficial to improve the stability of use. The limit ring 4 is made of sound-absorbing material to prevent the limit ring 4 from transmitting noise to the flange tube 9.
[0065] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.
Claims
1. A porous channel type pipe silencer, characterized in that: include, The annular plate body (1) is used to be arranged between two flange pipes (9). A sound-absorbing column (2) is provided on the annular plate (1). The sound-absorbing column (2) is used to be inserted into the flange tube (9). The outer diameter of the sound-absorbing column (2) is smaller than the inner diameter of the flange tube (9). The sound-absorbing column (2) is provided with a plurality of fluid channels (21) along its axial direction. A sound-absorbing ring (3) is sleeved outside the sound-absorbing column (2), and the outer diameter of the sound-absorbing ring (3) is smaller than the inner diameter of the flange tube (9).
2. The porous channel type pipe silencer according to claim 1, characterized in that: The sound-absorbing ring (3) is rotatably arranged outside the sound-absorbing column (2).
3. The porous channel type pipe silencer according to claim 2, characterized in that: The inner diameter of the sound-absorbing ring (3) is greater than the outer diameter of the sound-absorbing column (2), and an elastic protrusion (31) is provided on the inner wall of the sound-absorbing ring (3).
4. The porous channel type pipe silencer according to claim 3, characterized in that: There are at least three elastic protrusions (31), and the elastic protrusions (31) are evenly distributed along the circumference of the sound-absorbing ring (3).
5. The porous channel type pipe silencer according to claim 2, characterized in that: Also includes, A counterweight (32) is arranged on the sound-absorbing ring (3), and the center of gravity of the sound-absorbing ring (3) is close to the counterweight (32).
6. The porous channel type pipe silencer according to claim 5, characterized in that: An annular sliding groove (33) is provided on the inner wall of the sound-absorbing ring (3), and the counterweight block (32) is slidably arranged in the annular sliding groove (33).
7. The porous channel type pipe silencer according to claim 1, characterized in that: The annular plate body (1) is in the shape of a circular ring, the sound-absorbing column body (2) is in the shape of a cylinder, and the annular plate body (1) and the sound-absorbing column body (2) are coaxial.
8. The porous channel type pipe silencer according to claim 1, characterized in that: The sound-absorbing column (2) is a glass wool column, a rock wool column, a mineral wool column or a cotton and linen column.
9. The porous channel type pipe silencer according to claim 1, characterized in that: A plurality of the sound-absorbing rings (3) are arranged along the axial direction of the sound-absorbing column (2).
10. The porous channel type pipe silencer according to claim 9, characterized in that: Also includes, A limiting ring (4) is sleeved outside the sound-absorbing column (2), and the limiting ring (4) is close to the free end of the sound-absorbing column (2).