Pipeline silencer for fuel gas pressure regulating valve

Abstract

The utility model relates to the technical field of pipeline silencers, and provides a pipeline silencer for a fuel gas pressure regulating valve, which comprises a first cylinder with two ends, one end of the first cylinder is a first outlet end, the other end of the first cylinder is a first closed end, and a second cylinder with two ends of the second cylinder is a second inlet end and the other end of the second cylinder is a second closed end. The second closed end is located in the first cylinder, the second inlet end penetrates through the first closed end and is located outside the first cylinder, the second cylinder is provided with a silencing hole set, the silencing hole set is located in the first cylinder, the second cylinder is communicated with the first cylinder through the silencing hole set, and the silencing hole set comprises a plurality of silencing holes distributed in the circumferential direction of the second cylinder. And a plurality of silencing hole groups are arranged along the axial direction of the second cylinder body, and the silencing holes are obliquely arranged. By means of the technical scheme, the problem that in the prior art, a pipeline silencer is poor in silencing effect is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline silencers, and in particular to a pipeline silencer for a gas pressure regulating valve. Background Art

[0002] Gas pressure regulating valves play a crucial role in gas transmission and application systems. They regulate gas pressure to ensure a stable and appropriate supply to various gas-consuming devices. However, as gas passes through the pressure regulating valve, rapid changes in parameters such as pressure and flow rate often generate intense noise. This noise not only causes severe noise pollution to the surrounding environment, impacting people's lives, work, and the normal operation of surrounding facilities, but also can damage operators' hearing due to prolonged exposure to high-decibel noise.

[0003] Traditional gas pipeline silencers often lack effective flow diversion designs. After the gas enters the silencer from the pressure regulating valve, the flow is mostly concentrated within the pipeline. This concentrated, high-speed flow generates high noise levels. Furthermore, without effective flow diversion measures, the noise waves generated by the flow are also relatively concentrated, lacking effective acoustic processes such as interference and reflection to dissipate sound energy, resulting in suboptimal noise reduction. Utility Model Content

[0004] The utility model provides a pipeline silencer for a gas pressure regulating valve, which solves the problem of poor silencing effect of the pipeline silencer in the prior art.

[0005] The technical solution of the utility model is as follows: a pipeline silencer for a gas pressure regulating valve, comprising:

[0006] The first cylinder has two ends, one end is a first outlet end, and the other end is a first closed end.

[0007] The second cylinder has two ends, one end is a second inlet end, and the other end is a second closed end, the second closed end is located in the first cylinder, the second inlet end passes through the first closed end and is located outside the first cylinder,

[0008] The second cylinder has a silencer hole group, the silencer hole group is located in the first cylinder, and the second cylinder is connected to the first cylinder through the silencer hole group.

[0009] The muffler hole group includes a plurality of muffler holes distributed along the circumference of the second cylinder. The muffler hole group is provided with a plurality of muffler holes along the axial direction of the second cylinder, and the muffler holes are arranged obliquely.

[0010] As a further technical solution,

[0011] The muffler holes in the same muffler hole group have the same inclination direction, and the inclination directions of two adjacent muffler hole groups are opposite.

[0012] As a further technical solution, it also includes:

[0013] The sound-absorbing cylinder is arranged on the inner wall of the first cylinder. The sound-absorbing cylinder is sleeved on the outside of the second cylinder, and a gap is formed between the sound-absorbing cylinder and the second cylinder.

[0014] As a further technical solution,

[0015] The sound-absorbing cylinder is rotatably arranged on the inner wall of the first cylinder.

[0016] As a further technical solution,

[0017] The sound-absorbing cylinder is a felt cylinder, a metal mesh cylinder, a rock wool cylinder or a mineral wool cylinder.

[0018] As a further technical solution, it also includes:

[0019] The counterweight block is arranged on the inner wall of the sound-absorbing cylinder.

[0020] As a further technical solution,

[0021] An annular sliding groove is provided on the inner wall of the sound-absorbing cylinder, and the counterweight block is slidably arranged in the annular sliding groove.

[0022] As a further technical solution,

[0023] The second cylinder is coaxial with the first cylinder.

[0024] As a further technical solution, it also includes:

[0025] The silencer net is arranged in the first cylinder, and the silencer net is located on one side of the second closed end.

[0026] As a further technical solution, it also includes:

[0027] A first connecting flange is provided on the first outlet end of the first cylinder,

[0028] The second connecting flange is arranged on the second inlet end of the second cylinder.

[0029] The working principle and beneficial effects of the utility model are as follows:

[0030] In this utility model, a nested structure of a first and second cylinder forms a specific internal spatial relationship. One end of the first cylinder is sealed as the outlet, while one end of the second cylinder penetrates the closed end of the first cylinder as the inlet, and its other end is sealed within the first cylinder. This creates a channel framework that allows gas to flow along a specific path, laying the foundation for the subsequent silencing function.

[0031] The second cylinder is equipped with a group of silencer holes, with several groups arranged axially and several distributed circumferentially. As the gas flows from the second cylinder through these silencer holes to the first cylinder, it disperses into different silencer holes, achieving diversion and deceleration. This reduces the overall flow rate and the noise intensity generated by concentrated high-speed flow. Furthermore, the angled silencer holes alter the direction and angle of the airflow, causing reflection and refraction of sound waves during propagation. This allows sound waves from different directions to interfere with and overlap, dissipating sound energy and achieving a preliminary sound-absorbing effect. 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 three-dimensional structure of the utility model Figure 1 ;

[0034] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 ;

[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-first cylinder, 11-first outlet end, 12-first closed end, 13-first connecting flange, 2-second cylinder, 21-second inlet end, 22-second closed end, 23-second connecting flange, 3-silencing hole group, 31-silencing hole, 4-sound-absorbing cylinder, 41-annular slide groove, 5-counterweight block, 6-silencing net. 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 pipeline silencer for a gas pressure regulating valve, comprising: a first cylinder 1, a second cylinder 2 and a silencer hole group 3. The first cylinder 1 has two ends, one end is a first outlet end 11, and the other end is a first closed end 12. The second cylinder 2 has two ends, one end is a second inlet end 21, and the other end is a second closed end 22. The second closed end 22 is located in the first cylinder 1, and the second inlet end 21 passes through the first closed end 12 and is located outside the first cylinder 1. The second cylinder 2 has a silencer hole group 3, and the silencer hole group 3 is located in the first cylinder 1. The second cylinder 2 is connected with the first cylinder 1 through the silencer hole group 3. The silencer hole group 3 includes a plurality of silencer holes 31 distributed along the circumference of the second cylinder 2. The silencer hole group 3 is provided with a plurality of silencer holes 31 along the axial direction of the second cylinder 2, and the silencer holes 31 are arranged obliquely.

[0044] In this embodiment, a specific internal spatial relationship is formed by providing a nested structure of the first cylinder 1 and the second cylinder 2. The first cylinder 1 has one closed end as the outlet, while the second cylinder 2 has one end that penetrates the closed end of the first cylinder 1 as the inlet and the other end that is enclosed within the first cylinder 1. This creates a channel framework that allows gas to flow along a specific path, laying the foundation for the subsequent implementation of the silencing function.

[0045] The second cylinder 2 is provided with a group of muffler holes 3, with several groups of muffler holes 31 arranged axially and distributed circumferentially. This allows the gas to disperse into different muffler holes 31 as it flows from the second cylinder 2 through these muffler holes 31 to the first cylinder 1, achieving diversion and deceleration. This reduces the overall flow velocity and the noise intensity generated by concentrated high-speed flow. Furthermore, the angled muffler holes 31 alter the direction and angle of the airflow, causing reflection and refraction of sound waves during propagation. This allows sound waves from different directions to interfere with and overlap, dissipating sound energy and achieving a preliminary muffler effect.

[0046] Furthermore, the muffler holes 31 in the same muffler hole group 3 have the same inclination direction, and the inclination directions of two adjacent muffler hole groups 3 are opposite.

[0047] In this embodiment, the inclination direction of the muffler holes 31 in the same muffler hole group 3 is the same (eg Figure 5 As shown, the central axis of the silencer hole 31 is coplanar with the central axis of the second cylinder 2, and the plane perpendicular to the central axis of the second cylinder 2 is set as the reference plane. The inclination to the left of the reference plane is one inclination direction, and the inclination to the right of the reference plane is another direction. The silencer hole 31 has only the above two inclination directions. This allows the group of silencer holes 31 to guide the airflow in a relatively uniform direction and interfere with the sound waves. The inclination directions of the two adjacent silencer hole groups 3 are opposite, which is conducive to the mutual cancellation or weakening of sound waves of different frequencies and directions, thereby reducing the transmission of noise.

[0048] Furthermore, it also includes a sound-absorbing cylinder body 4, which is arranged on the inner wall of the first cylinder body 1 and is sleeved outside the second cylinder body 2, with a gap between the sound-absorbing cylinder body 4 and the second cylinder body 2.

[0049] In this embodiment, the sound-absorbing cylinder 4 is disposed on the inner wall of the first cylinder 1 and is sleeved outside the second cylinder 2, leaving a gap between the first cylinder 1 and the second cylinder 2. When gas flows through the muffler holes 31 and enters this gap, sound waves come into contact with the sound-absorbing cylinder 4. The sound-absorbing cylinder 4 absorbs sound waves by utilizing its own material properties. For example, through its internal pore structure and fibers, it interacts with sound waves, converting sound energy into other forms such as heat, which is consumed. This further enhances the muffler's ability to reduce noise and improves the overall noise reduction effect.

[0050] Furthermore, the sound-absorbing cylinder body 4 is rotatably arranged on the inner wall of the first cylinder body 1 .

[0051] In this embodiment, the sound-absorbing cylinder 4 is rotatably mounted on the inner wall of the first cylinder 1, allowing it to flexibly change its angle and method of contact with airflow and sound waves. During the gas flow process, under the impact of airflows of different directions and intensities, the rotating sound-absorbing cylinder 4 can interact with the sound waves in all directions, avoiding local sound absorption saturation or sound absorption dead spots. This allows for better adaptation to airflow and noise conditions under different operating conditions, maintaining relatively stable and good sound absorption performance, and optimizing the muffler's noise treatment effectiveness under various complex flow conditions.

[0052] In addition, the air outlet speed of different silencer holes 31 will change. After the changed airflow hits the sound-absorbing cylinder body 4, the force on the sound-absorbing cylinder body 4 will deviate, which provides the possibility of driving the sound-absorbing cylinder body 4 to rotate, and then the friction generated by the rotation of the sound-absorbing cylinder body 4 will be converted into heat energy.

[0053] Furthermore, the sound-absorbing cylinder 4 is a felt cylinder, a metal mesh cylinder, a rock wool cylinder or a mineral wool cylinder.

[0054] In this embodiment, the sound-absorbing cylinder 4 can be made of a variety of materials, including felt, metal mesh, rock wool, or mineral wool. Each material has its own unique sound-absorbing properties. Felt cylinders absorb low- and medium-frequency sounds well, are soft, and are easy to process and install. Metal mesh cylinders can achieve a certain level of structural strength while also reflecting and scattering sound waves through their surface or internal structure, thereby aiding in sound absorption. Rock wool and mineral wool cylinders have a rich internal porous structure, providing strong absorption of high- and medium-frequency sounds, and also offer other functions such as fire protection and heat preservation. The appropriate sound-absorbing cylinder material can be flexibly selected based on factors such as the specific gas pipeline environment and noise frequency characteristics to achieve optimal sound absorption.

[0055] Furthermore, a counterweight 5 is included, which is arranged on the inner wall of the sound-absorbing cylinder 4.

[0056] In this embodiment, the counterweight 5 can shift the center of gravity of the sound-absorbing cylinder 4 so that the portion of the sound-absorbing cylinder 4 having the counterweight 5 is located at the bottom.

[0057] Furthermore, an annular groove 41 is provided on the inner wall of the sound-absorbing cylinder body 4 , and the counterweight 5 is slidably arranged in the annular groove 41 .

[0058] In this embodiment, the counterweight block 5 is slidably set in the annular groove 41. Such a structure ensures that the counterweight block 5 can change its position on the inner wall of the sound-absorbing cylinder 4 as needed, limits the range of movement of the sound-absorbing cylinder 4, and makes it always in a reasonable position range, so as to give full play to the sound absorption effect of each part of the sound-absorbing cylinder 4.

[0059] Furthermore, the second cylinder 2 is coaxial with the first cylinder 1 .

[0060] In this embodiment, the coaxial design of the second cylinder 2 and the first cylinder 1 makes the flow of gas in the entire silencer smoother and more uniform, avoiding the local excessive flow velocity and increased turbulence caused by the eccentricity of the cylinder, and allowing the airflow to pass through the silencer holes and subsequent silencer structures such as the sound-absorbing cylinder in a more regular and stable path, which is more conducive to the reflection, interference, and absorption of sound waves in each silencer link according to the expected rules, thereby optimizing the overall silencer effect and making the silencer's control of noise more stable and efficient.

[0061] Furthermore, a silencer net 6 is included. The silencer net 6 is arranged in the first cylinder 1 and is located on one side of the second closed end 22 .

[0062] In this embodiment, the silencer net 6 is arranged in the first cylinder 1 and is located on one side of the second closed end 22. When the airflow and sound waves processed by the previous silencer hole group 3, the sound-absorbing cylinder 4 and other structures reach this point, the silencer net 6 can intercept and reflect the sound waves again. The silencer net 6 is made of sound-absorbing material and further achieves a sound-absorbing effect.

[0063] Furthermore, it also includes a first connecting flange 13 , which is arranged on the first outlet end 11 of the first cylinder 1 , and a second connecting flange 23 is arranged on the second inlet end 21 of the second cylinder 2 .

[0064] In this embodiment, the first connecting flange 13 is arranged at the first outlet end 11 of the first cylinder 1, and the second connecting flange 23 is arranged at the second inlet end 21 of the second cylinder 2. Through the flange connection, the silencer can be conveniently, quickly and firmly connected to the gas pressure regulating valve and the front and rear gas pipelines, ensuring the sealing of the connection and preventing gas leakage. It is also convenient for operation when installing, repairing or replacing the silencer, thereby improving the convenience and operability of the entire gas pipeline system in installation and maintenance.

[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 pipeline silencer for a gas pressure regulating valve, characterized in that: include, The first cylinder (1) has two ends, one end is a first outlet end (11), and the other end is a first closed end (12). The second cylinder (2) has two ends, one end is a second inlet end (21), and the other end is a second closed end (22), the second closed end (22) is located inside the first cylinder (1), and the second inlet end (21) passes through the first closed end (12) and is located outside the first cylinder (1). The second cylinder (2) has a silencer hole group (3), the silencer hole group (3) is located in the first cylinder (1), and the second cylinder (2) is connected to the first cylinder (1) through the silencer hole group (3). The muffler hole group (3) comprises a plurality of muffler holes (31) distributed along the circumference of the second cylinder (2), and the muffler hole group (3) is provided with a plurality of muffler holes along the axial direction of the second cylinder (2), and the muffler holes (31) are arranged obliquely.

2. A pipeline silencer for a gas pressure regulating valve according to claim 1, characterized in that: The muffler holes (31) in the same muffler hole group (3) have the same inclination direction, and the inclination directions of two adjacent muffler hole groups (3) are opposite.

3. A pipeline silencer for a gas pressure regulating valve according to claim 1, characterized in that: Also includes, A sound-absorbing cylinder (4) is arranged on the inner wall of the first cylinder (1), and the sound-absorbing cylinder (4) is sleeved outside the second cylinder (2), with a gap between the sound-absorbing cylinder (4) and the second cylinder (2).

4. A pipeline silencer for a gas pressure regulating valve according to claim 3, characterized in that: The sound-absorbing cylinder (4) is rotatably arranged on the inner wall of the first cylinder (1).

5. A pipeline silencer for a gas pressure regulating valve according to claim 4, characterized in that: The sound-absorbing cylinder (4) is a felt cylinder, a metal mesh cylinder, a rock wool cylinder or a mineral wool cylinder.

6. A pipeline silencer for a gas pressure regulating valve according to claim 4, characterized in that: Also includes, A counterweight (5) is arranged on the inner wall of the sound-absorbing cylinder (4).

7. A pipeline silencer for a gas pressure regulating valve according to claim 6, characterized in that: An annular sliding groove (41) is provided on the inner wall of the sound-absorbing cylinder (4), and the counterweight (5) is slidably arranged in the annular sliding groove (41).

8. The pipeline silencer for a gas pressure regulating valve according to claim 1, characterized in that: The second cylinder (2) is coaxial with the first cylinder (1).

9. The pipeline silencer for a gas pressure regulating valve according to claim 1, characterized in that: Also includes, A silencer net (6) is arranged in the first cylinder (1), and the silencer net (6) is located on one side of the second closed end (22).

10. The pipeline silencer for a gas pressure regulating valve according to claim 1, characterized in that: Also includes, A first connecting flange (13) is provided on the first outlet end (11) of the first cylinder (1), The second connecting flange (23) is provided on the second inlet end (21) of the second cylinder (2).

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