CN220337814U

CN220337814U - Pipeline muffler

Info

Publication number: CN220337814U
Application number: CN202321551452.XU
Authority: CN
Inventors: 张维
Original assignee: Zhongke Zhensheng Suzhou Electronic Technology Co ltd
Current assignee: Zhongke Zhensheng Suzhou Electronic Technology Co ltd
Priority date: 2023-06-16
Filing date: 2023-06-16
Publication date: 2024-01-12
Anticipated expiration: 2033-06-16

Abstract

The utility model discloses a pipeline muffler which comprises a pipeline assembly, a sound source, a hydrophone and a gas storage assembly. The tubing assembly includes a passageway for delivering a fluid; the sound source is used for emitting sound waves into the channel; the hydrophone is connected with the pipeline assembly and is used for picking up noise in the channel; the gas storage assembly is provided with a gas storage cavity communicated with the interior of the sound source, and comprises a flexible piece for contacting with fluid. According to the pipeline muffler provided by the utility model, the gas storage component is arranged in the gas storage cavity communicated with the interior of the sound source and the flexible component used for being in contact with the fluid, when the pressure of the fluid in the channel changes, the flexible component deforms under the action of the pressure, so that the gas storage cavity is used for inflating or deflating the sound source, the pressure balance between the internal pressure of the sound source and the external fluid pressure is realized, the adverse effect of the fluid pressure in the channel on the vibration of the sound source is reduced, and the sound source can effectively inhibit low-frequency line spectrum noise transmitted along the interior of the pipeline component, and a better noise elimination effect is achieved.

Description

Pipeline muffler

Technical Field

The utility model relates to the technical field of silencers, in particular to a pipeline silencer.

Background

The pipeline system has very important application in various industrial fields, especially in the field of ship industry, and a liquid filling pipeline system (such as a domestic water pipeline, a cooling water pipeline and the like) is commonly existing in various ships and plays an important role. At present, the fluid flows in the pipeline, and noise is inevitably generated. Therefore, more and more pipeline mufflers which can be used for fluid circulation and muffling are connected in series in pipelines.

To the inventors' knowledge, a sound source driven by electromagnetic waves may be used to emit sound waves corresponding to noise signals into a pipe to cancel vibration energy of the noise signals, thereby playing a role in noise reduction, but the sound source directly contacts with fluid inside the pipe, so when the fluid pressure in the pipe increases, the fluid pressure in the pipe may press a vibrating member of the sound source, which adversely affects normal operation of the sound source.

Accordingly, there is a need for an improvement over the prior art to overcome the deficiencies described in the prior art.

Disclosure of Invention

The utility model aims to provide a pipeline muffler, which can reduce adverse effects of fluid pressure on a sound source.

To achieve the above object, the present utility model provides a pipe muffler including a pipe assembly including a passage for conveying a fluid;

a sound source for emitting sound waves into the channel;

the hydrophone is connected with the pipeline assembly and is used for picking up noise in the channel; the method comprises the steps of,

the gas storage assembly is provided with a gas storage cavity communicated with the interior of the sound source, and comprises a flexible piece for contacting with the fluid.

Further, the gas storage component is annular and surrounds the annular part of the pipeline component.

Further, the pipeline assembly comprises a first pipe body, the gas storage assembly surrounds the outside of the first pipe body, a first perforation area is formed in the first pipe body, and the first perforation area is arranged at one end of the first pipe body.

Further, the gas storage assembly comprises a hard shell, the flexible piece and the shell are annular, the shell surrounds the outer part of the flexible piece, and the flexible piece and the shell are connected to form the gas storage cavity.

Further, the pipeline assembly comprises a second pipe body and a third pipe body which are respectively positioned at two ends of the first pipe body, and the shell is integrally formed with the second pipe body and the third pipe body; the third pipe body is provided with an installation pipe part communicated with the channel and the outside, the sound source is connected with the installation pipe part and seals the installation pipe part, and a second perforation area is formed in the position, corresponding to the installation pipe part, of the third pipe body.

Further, a mounting seat for mounting the hydrophone is arranged on the outer wall of the pipeline assembly, and the hydrophone is at least partially contacted with the fluid in the channel;

the pipeline muffler comprises at least two hydrophones, and the at least two hydrophones are respectively positioned at the upstream of the second pipe body and the downstream of the third pipe body.

Further, the first perforation area and the second perforation area comprise a plurality of through holes, and the diameter of each through hole is 3-6mm; the length of the first perforation area is 25% -40% of the total length of the first pipe body, the perforation rate of the first perforation area is 30% -50%, and the perforation rate of the second perforation area is more than 25%.

Further, the length of the first perforation area is one third of the total length of the first pipe body.

Further, the pipeline assembly further comprises an air duct connected between the sound source and the air storage assembly, and the air duct is communicated with the inner cavity of the sound source and the air storage cavity.

Further, the pipeline muffler further comprises a control module, wherein the control module is electrically connected with the hydrophone and the sound source and is used for controlling the sound source to emit sound waves according to noise signals of the hydrophone, and the sound waves are used for counteracting vibration of the noise.

Further, the sound source includes:

the shell comprises an inner cavity communicated with the gas storage cavity, and the shell is provided with a first opening end;

the vibration piece is arranged at the first opening end and enables the inner cavity to form a closed cavity; the method comprises the steps of,

and the actuator is connected with the vibrating piece and used for driving the vibrating piece to vibrate along the vibration direction, and is arranged in the inner cavity and is in sliding connection with the shell along the vibration direction.

Further, the sound source further includes:

the elastic piece is arranged in the inner cavity and applies elastic force to the actuator along the vibration direction; the method comprises the steps of,

the sliding rail assembly is connected between the shell and the actuator and comprises a guide rail and a sliding block which are in sliding fit along the vibration direction, one of the guide rail and the sliding block is connected with the inner wall of the shell, and the other one of the guide rail and the sliding block is connected with the outer wall of the actuator.

Further, the elastic member is a spring elastically abutting between the actuator and the housing.

Further, the vibrating piece comprises a radiation plate and an elastic supporting ring positioned on the outer side of the radiation plate, an annular space is formed between the radiation plate and the annular shell, the elastic supporting ring is fixedly connected with the annular shell and the radiation plate respectively, the annular space is sealed, and the actuator is fixedly connected with the radiation plate.

Further, the elastic support ring is made of a high polymer material, and the radiation plate is made of a hard metal or alloy or nylon material.

Further, the elastic support ring comprises an outer ring, an inner ring and at least one circle of protruding parts connected between the outer ring and the inner ring, the outer ring is fixedly connected with the annular shell, and the inner ring is fixedly connected with the radiation plate.

Compared with the prior art, the utility model has the following beneficial effects: according to the pipeline muffler provided by the embodiment of the utility model, the pipeline muffler comprises the pipeline assembly, the sound source, the hydrophone and the gas storage assembly, wherein the gas storage assembly is arranged in the gas storage cavity communicated with the interior of the sound source and the flexible piece used for being in contact with fluid, when the pressure of the fluid in the channel changes, the flexible piece deforms under the action of the pressure, so that the gas storage cavity is inflated or deflated for the sound source, the pressure balance between the internal pressure of the sound source and the external fluid pressure is realized, and the adverse effect of the fluid pressure in the channel on the vibration of the sound source is reduced.

Drawings

FIG. 1 is a schematic view of a pipe muffler according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of the pipe muffler shown in FIG. 1;

FIG. 3 is a partial enlarged view at B in FIG. 2;

FIG. 4 is an exploded view of the pipe muffler shown in FIG. 1;

FIG. 5 is a cross-sectional view of the sound source of FIG. 1;

FIG. 6 is an exploded view of the sound source of FIG. 1;

fig. 7 is a schematic view of the structure of the elastic support of fig. 6.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not limiting. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present application are shown in the drawings. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The terms "comprising" and "having" and any variations thereof herein are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

As shown in fig. 1 to 4, the present application provides a pipe silencer comprising a pipe assembly 1, a sound source 2, a hydrophone 3 and a gas storage assembly 4.

The pipeline assembly 1 comprises a channel 101 for conveying fluid and a first pipe body 102, a second pipe body 103 and a third pipe body 104, wherein the second pipe body 103 is close to the upstream end of the pipeline assembly 1, and the third pipe body 104 is close to the downstream end of the pipeline assembly 1. The third pipe body 104 is provided with a mounting pipe portion 105 which communicates the channel 101 and the outside, and when the fluid is conveyed in the pipe assembly 1, the flowing fluid will generate noise in the channel 101, and the noise is the fluid noise of the water flowing along the channel 101, and is usually low-frequency line spectrum noise. The free ends of the second and third pipe bodies 103 and 104 are provided with flange portions 106 so as to be connected in series to a pipe system requiring noise reduction. The fluid may be, for example, water, oil or other types of liquids, and may also be a gas.

The sound source 2 is connected to the mounting tube portion 105, and the mounting tube portion 105 is enclosed by the sound source 2, and the sound source 2 is used to emit sound waves into the channel 101.

The hydrophone 3 is connected with the pipeline assembly 1 and is used for picking up noise in the channel 101, and sound waves emitted by the sound source 2 are used for counteracting the noise so as to play a role in noise reduction.

The gas storage assembly 4 is provided with a gas storage chamber 401 communicating with the interior of the acoustic source 2, and the gas storage assembly 4 includes a flexible member 402 for contacting the fluid.

When the pressure of the fluid in the channel 101 is increased, the fluid in the channel 101 presses the flexible part 402 of the gas storage assembly 4, so that the gas storage cavity 401 is compressed, part of the gas in the gas storage cavity 401 flows into the sound source 2, and the air pressure is increased until the pressure is close to or the same as the pressure of the fluid in the channel 101; conversely, when the fluid pressure is reduced, the flexible member 402 expands, the air storage chamber 401 forms a negative pressure with respect to the sound source 2, and air is drawn from the inside of the sound source 2, so that the air pressure inside the sound source 2 is close to or the same as the fluid pressure. Therefore, when the fluid pressure in the channel 101 changes, the flexible member 402 will deform under the action of the pressure, so that the air storage cavity 401 inflates or deflates the sound source 2, and pressure balance between the internal pressure of the sound source 2 and the external fluid pressure is realized, thereby reducing adverse effects of the fluid pressure in the channel 101 on vibration of the sound source 2. Meanwhile, the gas storage assembly and the gas storage cavity form an expansion pipe type passive muffler, and the expansion pipe type passive muffler has the resistance and resistance noise elimination functions, can effectively inhibit medium-high frequency fluid noise, and is combined with an active noise elimination part to form an active and passive composite muffler.

As a preferred embodiment, the volume of the air storage chamber 401 is set to be larger than the volume of the internal space of the acoustic source 2, so that the air storage chamber 401 can efficiently balance the air pressure in the acoustic source 2.

As a preferred embodiment, as shown in fig. 2 and 4, the gas storage assembly 4 is annular and surrounds the annular portion of the pipe assembly 1, specifically, the first pipe 102. The first pipe 102 is provided with a first perforation area 1021, and the third pipe 104 is provided with a second perforation area 1041 at a position corresponding to the mounting pipe 105.

The first and second perforated sections 1021 and 1041 each include a plurality of through holes. The first perforation area 1021 is used for communicating the channel 101 and the air storage cavity 401, so that the flexible piece 402 can be in direct contact with fluid; the second perforation area 1041 may enable the sound waves emitted by the sound source 2 to enter the fluid in the channel 101, and may also block the impurities in the fluid from entering the sound source 2, so as not to affect the usability of the sound source 2.

As a preferred embodiment, the diameter of the through hole is 3-6mm, and the penetration rate of the second perforated area is 25% or more, so as to avoid serious secondary noise at high flow rates. The penetration rate of 25% refers to the ratio of the total area of the through holes to the area of the surface of the second penetration region 1041 where the through holes are opened.

As a preferred embodiment, the first perforation area 1021 is disposed at an end of the first tube 102 far from the sound source 2, the length of the first perforation area 1021 is 25% -40% of the total length of the first tube 102, preferably, the length of the first perforation area 1021 is about one third of the total length of the first tube 102, and the perforation ratio of the first perforation area 1021 is between 30% -50%, and the perforation ratio of 30% -50% refers to the ratio of the total area of the through holes to the area of the surface of the first perforation area 1021 where the through holes are opened. If the length of the first perforated section 1021 is too short, the water permeability rate will be too low, and the rate of flow of liquid into the reservoir will be too slow when the pressure in the tube increases rapidly, and the pressure self-balancing process will not respond in time, keeping up with the pressure changes in the tube. If the length of the first perforation area 1021 is too long, the inverted sound wave radiated by the flexible member 402 due to the gas communication when the sound source 2 sounds will efficiently enter the liquid in the tube through the first perforation area 1021 to counteract the sound wave emitted by the sound source 2, thereby forming an acoustic short circuit and reducing the active noise reduction effect. The length of the first perforation 1021 is about one third of the total length of the first tube 102, which is a result of research.

The gas storage assembly 4 comprises a hard shell 403, the flexible piece 402 and the shell 403 are annular, the flexible piece 402 is arranged inside the shell 403 and connected with the shell 403, and the shell 403 and the flexible piece 402 are matched to form a closed gas storage cavity 401. In this embodiment, the housing 403 is integrally formed with the second tube 102 and the third tube 103, and in other embodiments, may be provided separately.

As shown in fig. 3, annular clamping grooves 404 are formed in inner walls of two sides of the housing 403, annular clamping strips 405 matched with the clamping grooves 404 are arranged at two ends of the flexible member 402, and the clamping strips 405 at two ends are respectively inserted into the clamping grooves 404 and vulcanized during connection, so that the connection between the flexible member 402 and the housing 403 can be realized, the sealing performance is good, and air leakage is effectively prevented. In this embodiment, the flexible member 402 is made of a polymer material, such as rubber, and has a certain elasticity, and is easy to deform under the pressure of the fluid.

As a preferred embodiment, the flexible member 402 surrounds the outside of the first tube body 101, and is attached to the outer surface of the first tube body 101, and the first tube body 101 supports the flexible member 402, so as to prevent the flexible member 402 from being excessively deformed to rupture or separate from the housing 403.

As a preferred embodiment, as shown in fig. 1 and 2, the outer wall of the pipe assembly 1 is provided with a mounting seat 107 for mounting the hydrophone 3, and the hydrophone 3 is at least partially in contact with the fluid in the channel 101 to more accurately pick up noise of the fluid. In this embodiment, the pipeline muffler includes at least two hydrophones 3, with at least two hydrophones 3 being located upstream of the second pipe 102 and downstream of the third pipe 104, respectively. Noise upstream and downstream of the pipe assembly 1 is detected and picked up directly by the two hydrophones 3.

The pipeline assembly 1 further comprises an air duct 108, the air duct 108 is connected between the sound source 2 and the air storage assembly 4, the air duct 108 is communicated with the inner cavity of the sound source 2 and the air storage cavity 401, and fluid communication between the air storage cavity 401 and the sound source 2 is achieved through the air duct 108, so that the air pressure in the sound source 2 and the pressure in the fluid in the channel 101 are automatically balanced within a certain pressure range, and the working reliability of the sound source 2 is improved.

The pipeline muffler also comprises a control module (not shown), wherein the control module is electrically connected with the sound source 2 and the hydrophone 3, and the control module collects and analyzes noise signals in the channel 101 picked up by the hydrophone 3 to generate driving signals to control the sound source 2 to emit sound waves. The hydrophone 3 can measure parameters such as frequency, phase and amplitude of noise in the channel 101 in real time, and the control electric module generates a driving signal according to the noise signal, so that the sound source 2 emits sound waves opposite to the noise signal to counteract the energy of the noise. Thus, the sound source 2 can actively adapt to the change of the noise frequency in the pipe body 1, and the noise is reduced in a targeted manner, so that a good noise elimination function is realized.

In some embodiments, as shown in fig. 5 and 6, the sound source 2 includes a housing 201, a vibrating member, and an actuator 202.

The housing 201 includes an inner cavity 2011 in communication with the air reservoir 401, the housing 201 being provided with a first open end 2012.

The vibrating member is disposed at the first opening 2012, and seals the first opening 2012, so that the inner cavity 2011 forms a closed cavity.

The actuator 202 is disposed inside the inner cavity 2011 and is connected to a vibrating member, which is driven to vibrate by the actuator 202, i.e., the vibrating member vibrates longitudinally along with the actuator 202 to vibrate under water to emit sound waves. The longitudinal direction is along the axis a of fig. 2, and the vibration direction of the vibration member generally coincides with the axis direction of the actuator 202. The actuator 202 is provided inside the inner cavity 2011 and is slidably connected to the housing 201 in the vibration direction (i.e., the direction of the axis a).

In other embodiments, as shown in fig. 5 and 6, the sound source 2 further includes an elastic member and slide rail assembly 205.

The elastic member is disposed in the inner cavity 2011 and applies an elastic force to the actuator 202 along the vibration direction, and in this embodiment, the elastic member is connected to the actuator 202. The actuator 202 is displaced by the slide rail assembly 205, facilitating longitudinal vibration of the actuator 202 relative to the housing 201.

The resonance frequency of the vibration system (the housing 201, the elastic member, the actuator 202, and the vibration member constitute the vibration system) can be adjusted by adjusting the elastic coefficient of the elastic member. For the pipeline systems with different resonance frequencies of the noise, the resonance frequency of the sound source 2 can be adjusted to correspond to the resonance frequency of the noise of the pipeline system, so that the sound source 2 emits sound waves with larger amplitude and energy at the resonance frequency, and the noise at the resonance frequency of the pipeline system can be well restrained.

As shown in fig. 5 and 6, the elastic member is a spring 203, and the number of elastic members may be one or more. In the embodiment shown in fig. 2, a plurality of springs 203 are respectively resiliently abutted between the actuator 202 and the base plate 2014 of the housing 201. In this embodiment, four spring positioning columns 204 are provided at the top of the actuator 202 and are arranged in a central symmetry manner, four spring positioning columns 204 are also provided at the top in the housing 201 and correspond to the positions of the spring positioning columns 204 on the actuator 202, two ends of the spring 203 are respectively sleeved between the two spring positioning columns 204, so that the spring positioning columns are conveniently positioned, elastically abutted between the housing 201 and the actuator 202, and the spring 203 provides elastic support, so that the resonance frequency of a moving body formed by the vibrating element and the actuator 202 can be reduced.

The slide rail assembly 205 includes a guide rail 2051 and a slider 2052 slidably coupled along the vibration direction a, one of the guide rail 2051 and the slider 2052 being connected to an inner wall of the housing 101, and the other being connected to an outer wall of the actuator 202. In this embodiment, as shown in fig. 5, the sliding rail assembly 205 includes a guide rail 2051 connected to the inner wall of the housing 201 and a slider 2052 connected to the outer wall of the actuator 202, where the slider 2052 is matched with the guide rail 2051, and the slider 2052 can move longitudinally along the guide rail 2051, so as to drive the actuator 202 to displace, and the displacement is provided by the sliding rail assembly 205. The actuator 202 is displaced by the slide rail assembly 205, facilitating the actuation of the vibrating member by the actuator 202. Preferably, the number of the sliding rail assemblies 205 is two, and the sliding rail assemblies are symmetrically arranged at two sides of the actuator 202, so that the stress at two sides of the actuator 202 is more balanced, in this embodiment, the number of the sliding rail assemblies 205 is four, and the sliding rail assemblies are respectively arranged at four directions, so that the sliding rail assemblies are firm in structure and good in stability.

As a preferred embodiment, the housing 201 includes an annular shell 2013, a base plate 2014, and a flange 2015, the base plate 104 is connected to the annular shell 2013, the flange 2015 is connected to the annular shell 2013, the vibrating element is disposed opposite to the base plate 2014, the flange 2015 is annular and is mounted outside the first opening 2012, the sound source 2 is connected to the mounting tube 105 through the flange 2015, and the mounting tube 105 preferably extends along a radial direction of the third tube 104. In this embodiment, the annular housing 2013, the base plate 2014 and the flange 2015 are integrally formed, and the inner cavity 2011 is formed between the annular housing 2013 and the base plate 2014. The vibrating member is mounted to the first open end 2012 such that the cavity 2011 forms a closed cavity that vibrates in water to generate sound waves when the vibrating member follows the longitudinal vibration of the actuator 202 in water.

The casing 201 is made of hard metal or alloy material, for example, stainless steel or aluminum alloy material can be selected, and has a certain pressure-resistant effect, and is not easy to deform and compress even under water with high depth. The actuator 202, the sliding rail assembly 205 and the spring 203 are all positioned in the inner cavity 2011 of the shell 201, and the device has the characteristics of small volume, low power consumption and the like. The actuator 202 is preferably an inertial actuator, and more preferably an electromagnetic inertial actuator, the actuator 202 driving the vibrating member for longitudinal movement along the axis a.

As shown in fig. 5 and 6, the vibration member includes a radiation plate 206 and an elastic support ring 207 located outside the radiation plate 206, an annular space 208 is formed between the radiation plate 206 and the annular housing 2013, the elastic support ring 207 is fixedly connected with the annular housing 2013 and the radiation plate 206, respectively, and seals the annular space 208, and the actuator 202 is fixedly connected with the radiation plate 206. The elastic support ring 207 enables the sound source 2 to radiate very low frequency sound waves to the outside efficiently.

The radiation plate 206 is a hard plate made of metal, alloy or nylon, the outline size of the radiation plate 206 is smaller than that of the first opening end 2012, the elastic support ring 207 is fixedly connected with the annular shell 2013 and the radiation plate 206 respectively, and seals the annular space 208, and the actuator 202 and the radiation plate 206 are rigidly and fixedly connected through connecting pieces such as screws, so that the connection is firm and the radiation plate is not easy to fall off.

The elastic support ring 207 is made of a polymer material, preferably a rubber material, and provides elastic support, and has small rigidity, large elasticity and large displacement. As shown in fig. 7, the elastic support ring 207 includes an outer ring 2071, an inner ring 2072, and at least one ring of protrusions 2073 connected between the outer ring 2071 and the inner ring 2072, preferably protruding in the normal direction of the radiation plate 206, the protrusions 2073 are ring-shaped, and the elastic support ring 207 is not limited to include only one ring of protrusions 2073, but may include multiple rings of protrusions 2073. The outer ring 2071 is fixedly connected with the annular shell 2013 in a vulcanization mode, and the inner ring 2072 is fixedly connected with the radiation plate 206 in a vulcanization mode, so that the connection is firm and the radiation plate is not easy to fall off.

When the actuator 202 vibrates up and down, the radiation plate 206 follows the vibration, and then the spring 203 and the sliding rail assembly 205 are matched for use, and the protruding part 2073 of the elastic support ring 207 provides elastic support and displacement, so that the adjusting range of the resonance frequency of the moving body formed by the radiation plate 206 and the actuator 202 is wider due to small rigidity, large elasticity and large displacement, thereby being beneficial to radiating very low frequency sound waves to the outside efficiently.

Before the pipeline muffler works, a certain air pressure can be pre-filled into the air storage cavity 401 and the inner cavity 2011 of the sound source 2, when the pipeline muffler works, the fluid pressure (such as water pressure) in the channel 101 can act on the vibrating piece, and the water pressure in the channel 101 received by the vibrating piece of the sound source 2 is balanced with the air pressure of the pre-stored air in the inner cavity 2011. The pressure difference at two sides of the vibrating piece is smaller, and in an ideal state, the vibrating piece is in a balanced state and can vibrate freely so as to radiate sound waves. When the fluid pressure in the channel 101 changes, the fluid in the air storage cavity 401 and the fluid in the inner cavity 2011 can adaptively move to perform pressure balance, so that adverse effects of the fluid pressure on the operation of the sound source 2 are reduced, and the reliability of the operation of the sound source 2 is improved.

The foregoing is merely exemplary of the utility model and other modifications can be made without departing from the scope of the utility model.

Claims

1. A pipeline muffler, comprising

A tubing assembly including a passageway for delivering a fluid;

a sound source for emitting sound waves into the channel;

2. The pipe silencer as claimed in claim 1, wherein the gas storage assembly is annular and surrounds the annular portion of the pipe assembly.

3. The pipe silencer as claimed in claim 2, wherein the pipe assembly includes a first pipe body, the gas storage assembly surrounds the first pipe body, a first perforated area is formed on the first pipe body, and the first perforated area is disposed at one end of the first pipe body.

4. The line muffler of claim 3, wherein the gas storage assembly comprises a rigid housing, wherein the flexible member and the housing are annular, wherein the housing surrounds the flexible member, and wherein the flexible member and the housing are coupled to form the gas storage chamber.

5. The pipe muffler of claim 4, wherein the pipe assembly includes a second pipe body and a third pipe body at both ends of the first pipe body, respectively, the housing being integrally formed with the second pipe body and the third pipe body; the third pipe body is provided with an installation pipe part communicated with the channel and the outside, the sound source is connected with the installation pipe part and seals the installation pipe part, and a second perforation area is formed in the position, corresponding to the installation pipe part, of the third pipe body.

6. The pipe muffler of claim 5, wherein the outer wall of the pipe assembly has a mounting seat for mounting the hydrophone, the hydrophone being at least partially in contact with the fluid within the channel;

7. The pipe muffler of claim 5, wherein each of the first perforated area and the second perforated area includes a plurality of through holes having a diameter of 3-6mm; the length of the first perforation area is 25% -40% of the total length of the first pipe body, the perforation rate of the first perforation area is 30% -50%, and the perforation rate of the second perforation area is more than 25%.

8. The pipe muffler of claim 7, wherein the length of the first perforated area is one third of the total length of the first pipe body.

9. The pipe silencer of claim 1, wherein the pipe assembly further comprises an air duct connected between the acoustic source and the air storage assembly, the air duct communicating the interior cavity of the acoustic source with the air storage cavity.

10. The pipe silencer of any of claims 1 to 9, further comprising a control module electrically coupled to the hydrophone and the acoustic source for controlling the acoustic source to emit acoustic waves based on the hydrophone's noise signal, the acoustic waves being configured to cancel vibrations of the noise.

11. The pipe silencer of any of claims 1 to 9, wherein the acoustic source includes:

12. The pipe muffler of claim 11, wherein the sound source further comprises:

13. The pipe muffler of claim 12, wherein the resilient member is a spring that resiliently abuts between the actuator and the housing.

14. The pipe muffler of claim 11, wherein the outer shell comprises an annular shell; the vibration piece comprises a radiation plate and an elastic supporting ring positioned on the outer side of the radiation plate, an annular space is formed between the radiation plate and the annular shell, the elastic supporting ring is fixedly connected with the annular shell and the radiation plate respectively, the annular space is sealed, and the actuator is fixedly connected with the radiation plate.

15. The pipe silencer of claim 14, wherein the elastic support ring is made of a high polymer material, and the radiation plate is made of a hard metal or alloy or nylon material.

16. The pipe muffler of claim 15, wherein the resilient support ring includes an outer ring, an inner ring, and at least one ring of protrusions coupled between the outer ring and the inner ring, the outer ring being fixedly coupled to the annular housing, the inner ring being fixedly coupled to the radiant panel.