Silencing mechanism of natural gas compressor

Abstract

The utility model relates to the technical field of silencing mechanisms, in particular to a silencing mechanism of a natural gas compressor, which comprises a silencer, a plurality of baffles are fixedly arranged in the silencer, the inside of the silencer is divided into a plurality of expansion chambers and Helmholtz resonator areas by the baffles, and at least a first pipeline for circulating natural gas is arranged in the silencer. A flow guide entity is arranged at an outlet of the first pipeline, natural gas is guided to flow along a more uniform and ordered path, and the two symmetrical semi-arc entities can effectively reduce sudden turning or impact of airflow in the expansion chamber, so that generation of turbulent flow and vortex is reduced, generation of noise is reduced, and the service life of the natural gas is prolonged. The reflection plate is arranged in the Helmholtz resonator, the inferior arc shape can more effectively guide sound waves to be reflected from one direction to the other direction, the sound waves can form a more stable and concentrated resonance effect in the resonator, the number of times of interaction between the sound waves and the wall face of the resonator is increased, and therefore the resonance effect is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a silencing mechanism technical field especially a silencing mechanism of natural gas compressor. BACKGROUND

[0002] Natural gas compressor is a kind of equipment for compressing natural gas, usually by crankshaft, bearing connecting rod, coupling and the movement mechanism of multiple components, and the working mechanism of cylinder, piston, valve and other components constitute.In addition, natural gas compressor also includes cooling, lubrication and adjustment and other auxiliary systems to ensure its normal operation.

[0003] Natural gas compressor will produce a variety of noise in the operation process, mainly including: due to the uninterrupted opening and closing of inlet valve and exhaust valve, the air dynamic noise produced due to pressure change in the link of inhaling and discharging natural gas;When reciprocating piston rod and flywheel equipment, mechanical noise and electromagnetic noise generated by mechanical expansion, friction and vibration.

[0004] Natural gas compressor in the case of large noise and unable to effectively silencing, the problem of the existence of abnormal friction inside the compressor leading to the aggravation of parts wear, in view of this, provide a kind of silencing mechanism of natural gas compressor. SUMMARY

[0005] The main purpose of the utility model is to provide a kind of silencing mechanism of natural gas compressor, to solve the problem of the existence of abnormal friction inside the compressor leading to the aggravation of parts wear in the case of large noise and unable to effectively silencing of natural gas compressor in the related art.

[0006] In order to achieve the above purpose, according to one aspect of the utility model, a kind of silencing mechanism of natural gas compressor is provided, including the muffler fixedly arranged at the compressor outlet, the muffler is fixedly arranged with several baffles, baffle divides the inside of muffler into several expansion chambers and helmholtz resonator region, at least the first pipeline for the flow of natural gas is provided in the muffler, the first pipeline outlet is provided with flow guide entity, the flow guide entity is used to prevent vortex flow, the inner wall of helmholtz resonator is fixedly provided with two symmetrically arranged reflection plates.

[0007] Further, the baffle includes first baffle, the first baffle side is fixedly provided with second baffle, the second baffle side is fixedly provided with third baffle, the first baffle and the third expansion chamber are formed between the side wall of muffler, the second baffle and first baffle form first expansion chamber, the second baffle and second baffle form second expansion chamber.

[0008] Further, one end of the first pipeline penetrates one side wall of the muffler, and the other end penetrates the first baffle and the second baffle, and the first pipeline is communicated with the gas outlet of the compressor and the second expansion chamber.

[0009] Further, a second pipeline is fixedly arranged and penetrates the first baffle and the third baffle, and the second pipeline penetrates the second baffle, and the second pipeline is communicated with the third expansion chamber and the Helmholtz resonator, and one end of the second pipeline is fixedly arranged with a straight pipeline, and one end of the straight pipeline penetrates the other side wall of the muffler.

[0010] Further, a third pipeline is fixedly arranged and penetrates the first baffle and the second baffle, and the third pipeline is communicated with the third expansion chamber and the second expansion chamber.

[0011] Further, a plurality of sound holes are arranged in the form of an annular array on the first pipeline, the second pipeline and the third pipeline, and the pipelines are tubular with thin ends and a thick middle.

[0012] Further, the flow guide entity is fixedly arranged at the bottom of the second expansion chamber, and the top of the flow guide entity is a symmetrically two-arc-shaped entity.

[0013] Further, the reflecting plate is a concave arc, and a plurality of through holes are arranged and penetrated on the reflecting plate.

[0014] Compared with the prior art, the natural gas compressor muffling mechanism has the following beneficial effects:

[0015] 1. In the natural gas compressor muffling mechanism, the flow guide entity is arranged to guide the natural gas to flow along a more uniform and orderly path, and the symmetrically two-arc-shaped entity can effectively reduce the sudden turning or impact of the airflow in the expansion chamber, thereby reducing the generation of turbulent flow and vortex flow, and helping to reduce the impact of the airflow on the pipeline and the wall of the expansion chamber, and further reducing the generation of noise. The sound reduction efficiency of the muffling mechanism is also improved. When the natural gas flows through the flow guide entity, the speed and flow direction are controlled, so that the reflection and interference of sound waves in the expansion chamber are more orderly and efficient, which helps to cause the same frequency sound waves to interfere with each other, thereby reducing the noise level.

[0016] 2. In the natural gas compressor muffling mechanism, the reflecting plate is arranged in the Helmholtz resonator, and the concave arc shape can more effectively guide the sound waves to reflect from one direction to another direction, which helps to control the propagation path of the sound waves, so that the sound waves can form a more stable and concentrated resonance effect inside the resonator, and the number of interactions between the sound waves and the wall of the resonator is also increased, thereby enhancing the resonance effect. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the natural gas compressor muffling mechanism in the preferred embodiment of the utility model.

[0018] Figure 2 It is the integrated switch overall structure schematic view of preferred embodiment of the utility model;

[0019] Figure 3 It is the integrated switch structure schematic view of preferred embodiment of the utility model;

[0020] Figure 4 It is the integrated switch structure schematic view of preferred embodiment of the utility model;

[0021] Figure 5 It is the integrated switch structure schematic view of preferred embodiment of the utility model;

[0022] Figure 6 It is the integrated switch structure schematic view of preferred embodiment of the utility model;

[0023] Figure 7 It is the natural gas flow direction schematic view of preferred embodiment of the utility model.

[0024] Illustration:

[0025] 1, muffler; 11, third expansion chamber; 12, first expansion chamber; 13, second expansion chamber; 131, flow guide entity; 14, helmholtz resonator; 15, reflection plate;

[0026] 2, first baffle; 3, second baffle; 4, third baffle; 5, first pipeline; 51, sound hole; 6, second pipeline; 7, third pipeline; 8, straight pipeline. Specific implementation

[0027] In order to further illustrate the technical means and effects taken by the utility model to achieve the predetermined utility model purposes, the specific implementation, structure, features and effects according to the utility model are described in detail as follows in combination with the preferred embodiments and the drawings.

[0028] Please refer to Figures 1-7 The utility model discloses a kind of muffling mechanisms of natural gas compressor, including the muffler 1 of fixed setting in compressor air outlet, the muffler 1 is fixedly provided with several baffles, baffle divides the inside of muffler 1 into several expansion chambers and helmholtz resonator 14 area, the first pipeline 5 for flowing through natural gas is at least provided in the muffler 1, the first pipeline 5 outlet is provided with flow guide entity 131, the flow guide entity 131 is used to prevent vortex flow formation, the inner wall of helmholtz resonator 14 is fixedly provided with two symmetrically arranged reflection plate 15.

[0029] The baffle comprises a first baffle 2, one side of which is fixedly provided with a second baffle 3, one side of which is fixedly provided with a third baffle 4, the first baffle 2 and the side wall of the muffler 1 form a third expansion chamber 11, the second baffle 3 and the first baffle 2 form a first expansion chamber 12, and the third baffle 4 and the second baffle 3 form a second expansion chamber 13.

[0030] One end of the first pipeline 5 penetrates through one side of the side wall of the muffler 1, and the other end penetrates through the first baffle 2 and the second baffle 3, and the first pipeline 5 is connected with the second expansion chamber 13.

[0031] The second pipeline 6 is fixedly arranged through the first baffle 2 and the third baffle 4, and penetrates through the second baffle 3, and the second pipeline 6 is connected with the third expansion chamber 11 and the Helmholtz resonator 14, and one end of the second pipeline 6 is fixedly provided with a straight pipeline 8, and one end of the straight pipeline 8 penetrates through the other side of the side wall of the muffler 1.

[0032] The third pipeline 7 is fixedly arranged through the first baffle 2 and the second baffle 3, and the third pipeline 7 is connected with the third expansion chamber 11 and the second expansion chamber 13.

[0033] A plurality of sound-absorbing holes 51 are arranged in an annular array on the first pipeline 5, the second pipeline 6 and the third pipeline 7, and the pipelines are tubular with thin ends and thick middle, the sound-absorbing holes 51 discharge noise from the pipelines and block in the expansion chambers, when natural gas flows through the pipelines, the noise generated will be transmitted to the expansion chambers through the sound-absorbing holes 51, and interact with the air and wall surface in the expansion chambers, thereby reducing the intensity and propagation range of the noise, and the arrangement of the sound-absorbing holes 51 avoids the formation of focusing or resonance of noise in the pipelines.

[0034] The pipeline is designed as a tubular shape with a thin end and a thick middle, which helps to reduce the turbulence of the gas flow in the pipeline and the generation of noise. When the natural gas flows out of the compressor outlet, it first passes through the thin part of the pipeline. Due to the small cross-sectional area of the pipeline, the gas flow speed is relatively fast, which helps to quickly guide the natural gas to the subsequent processing area. At the same time, at a faster flow speed, the turbulence and vortex phenomena in the gas flow are relatively less, so the noise generated is also relatively low. As the gas flow enters the thick middle part of the pipeline, the cross-sectional area of the pipeline increases, and the gas flow speed naturally slows down, which helps to reduce the impact of the gas flow on the pipeline wall, thereby reducing the generation of noise. At the same time, the thick pipeline space also provides more possibilities for noise dispersion and absorption. The thick middle part of the pipeline not only provides more flow space for the gas flow, but also creates favorable conditions for noise dispersion and absorption. When the noise waves in the gas flow meet the pipeline wall, reflection and scattering occur, thereby reducing the intensity and propagation range of the noise.

[0035] The material and surface treatment of the pipeline also affect the noise elimination effect, therefore, the pipeline material adopts a material with sound absorption performance, such as rubber, plastic or composite material, etc., which can more effectively absorb and disperse noise, improve the noise elimination effect, and a layer of sound-absorbing material is pasted on the outer wall of the pipeline to increase the sound-absorbing performance of the pipeline.

[0036] The flow guide entity 131 is fixedly arranged at the bottom of the second expansion chamber 13, and the top of the flow guide entity 131 is a symmetrically two-arc-shaped entity, which helps the natural gas to smoothly transition along the surface of the flow guide entity 131, reducing sudden turns or impacts. The main function of the flow guide entity 131 is to guide the natural gas entering the second expansion chamber 13 from the compressor outlet through the first pipeline 5 to flow along a more uniform and orderly path. By guiding the natural gas to flow along the arc-shaped surface of the flow guide entity 131, the turbulence and vortex generated in the second expansion chamber 13 can be effectively reduced. These turbulence and vortex are one of the main causes of noise generation, so reducing their generation helps to reduce the noise level.

[0037] The symmetrically two-arc-shaped entity at the top of the flow guide entity 131 can ensure that the natural gas does not directly impact the outer wall of the second pipeline 6, reducing the direct collision between the natural gas and the outer wall of the second pipeline 6, thereby reducing the generation of noise. At the same time, avoiding direct impact also means reducing the turbulence and vortex generated by the collision. The natural gas will be guided to flow along the arc-shaped surface of the flow guide entity 131 and eventually dispersed to various parts of the expansion chamber. In this way, the natural gas has been fully diffused and slowed down before entering the second pipeline 6, thereby reducing the generation of noise and turbulence.

[0038] When the natural gas flows through the second expansion chamber 13, the generated sound waves will reflect back and forth between the inner wall of the expansion chamber and the flow guide entity 131. During the reflection process, sound waves of the same frequency will interfere with each other, i.e., constructive interference and destructive interference. In destructive interference, the energy of the sound waves will cancel each other out, thereby reducing the noise level. The natural gas with preliminary noise reduction and the remaining sound waves continue to flow through the third pipeline 7 to the third expansion chamber 11. In the third expansion chamber 11, the sound waves are reflected and interfered again, further reducing the noise. The natural gas with noise reduction by the two expansion chambers and the remaining sound waves finally flow through the second pipeline 6 to the Helmholtz resonator 14. When the sound waves enter the resonator, they will cause the change of the air pressure in the cavity, thereby generating a resonance effect. At the resonance frequency, the energy of the sound waves will be absorbed by the resonator and converted into heat energy or other forms of energy, thereby achieving noise reduction. After the preliminary noise reduction by the expansion chamber and the further noise reduction by the Helmholtz resonator 14, the noise level of the natural gas is significantly reduced. Finally, the noise-reduced natural gas is discharged from the muffler 1 through the straight pipeline 8.

[0039] The reflection plate 15 is a lune, and a plurality of through holes are provided through the reflection plate 15. The reflection plate 15 is designed as a lune shape, so that the sound waves can be more effectively reflected from one direction to another when encountering the reflection plate 15. The lune shape ensures that the sound waves will not be excessively divergent during reflection, but will propagate along a relatively concentrated direction, which helps to control the propagation path of the sound waves and reduce the free propagation of noise in space. The through holes allow part of the sound waves to pass through, which will be reflected and attenuated during the process of passing through the through holes, thereby reducing the intensity of the sound waves. Secondly, the through holes also play a role in dispersing sound waves. When the sound waves encounter the through holes, part of the sound waves will bypass the through holes and continue to propagate, which helps to further reduce the noise level.

[0040] The inner walls of each expansion chamber and the Helmholtz resonator 14 are fixedly provided with porous sound-absorbing materials, preferably glass wool. The glass wool has excellent sound-absorbing performance and can effectively absorb sound waves and convert them into heat energy. At the same time, the glass wool also has good heat insulation and fireproof performance, which can meet the safety and stability requirements of the equipment. The sound-absorbing principle of glass wool is mainly based on its internal microporous structure. When the sound waves enter the material, they will be reflected and collided with the pore walls multiple times, causing the energy of the sound waves to gradually convert into heat energy and dissipate. This sound-absorbing process can effectively reduce the intensity of the sound waves, thereby reducing the propagation and impact of noise.

[0041] The utility model discloses in specific use, natural gas flows from the compressor air outlet, first through the first pipeline 5 and enters the second expansion chamber 13, and the natural gas is guided along its surface smooth transition through the flow guide entity 131, and the sound wave produced will be back and forth reflected between the second expansion chamber 13 inner wall and flow guide entity 131, and the sound wave will interfere and cancel in the reflection process, and the natural gas and residual sound wave that pass through the second expansion chamber 13 sound elimination continue to flow to the third expansion chamber 11 through the third pipeline 7, and further reduce noise, then, the natural gas passes through the second pipeline 6 and enters Helmholtz resonator 14 and carries out further sound elimination processing, and further sound elimination under the resonant frequency through the synergies of Helmholtz resonator 14 and reflection plate 15, and subsequently, the natural gas flows to the air outlet through the straight pipeline 8, and in this process, when the natural gas flows through the pipeline, the noise produced can be propagated to the expansion cavity through the sound elimination hole 51, and interact with the air and wall surface in the expansion cavity, and further reduce the intensity and propagation range of noise.

[0042] The above, only the preferred embodiment of the utility model has been, and does not make any form to the utility model limit, although the utility model has disclosed as above with the preferred embodiment, however, not to limit the utility model, any person skilled in the art, without departing from the utility model technical scheme range, when can utilize the technical content disclosed above make a little more change or modification is equivalent variation equivalent embodiment, but whatever does not depart from the utility model technical scheme content, according to the technical essence of the utility model to the above embodiment of any brief introduction modification, equivalent variation and modification, still belong to the utility model technical scheme range.

Claims

1. A silencing mechanism of a natural gas compressor, comprising a silencer (1) fixedly arranged at an air outlet of the compressor, a plurality of baffles are fixedly arranged in the silencer (1), the baffles divide the interior of the silencer (1) into a plurality of expansion chambers and a Helmholtz resonator (14) region, and at least a first pipeline (5) for flowing natural gas is arranged in the silencer (1), characterized in that, The first pipeline (5) outlet is provided with a flow guide entity (131), the flow guide entity (131) is used for preventing airflow from forming vortex, and the inner wall of the Helmholtz resonator (14) is fixedly provided with two symmetrically arranged reflection plates (15).

2. The sound attenuation mechanism for a natural gas compressor of claim 1, wherein, The baffle comprises a first baffle (2), one side of the first baffle (2) is fixedly provided with a second baffle (3), one side of the second baffle (3) is fixedly provided with a third baffle (4), the first baffle (2) and the side wall of the muffler (1) form a third expansion chamber (11), the second baffle (3) and the first baffle (2) form a first expansion chamber (12), and the third baffle (4) and the second baffle (3) form a second expansion chamber (13).

3. The sound attenuation mechanism for a natural gas compressor of claim 2, wherein, One end of the first pipeline (5) penetrates through one side of the side wall of the muffler (1), and the other end penetrates through the first baffle (2) and the second baffle (3), and the first pipeline (5) is connected with the gas outlet of the compressor and the second expansion chamber (13).

4. The sound attenuation mechanism for a natural gas compressor of claim 3, wherein, The second pipeline (6) is fixedly arranged through the first baffle (2) and the third baffle (4), and the second pipeline (6) penetrates through the second baffle (3), the second pipeline (6) is connected with the third expansion chamber (11) and the Helmholtz resonator (14), one end of the second pipeline (6) is fixedly provided with a straight pipeline (8), and one end of the straight pipeline (8) penetrates through the other side of the side wall of the muffler (1).

5. The sound attenuation mechanism for a natural gas compressor of claim 4, wherein, The third pipeline (7) is fixedly arranged through the first baffle (2) and the second baffle (3), and the third pipeline (7) is connected with the third expansion chamber (11) and the second expansion chamber (13).

6. The sound attenuation mechanism for a natural gas compressor of claim 1, wherein, A plurality of sound absorbing holes (51) are arranged in an annular array on the first pipeline (5), the second pipeline (6) and the third pipeline (7), and the pipelines are tubular with thin ends and thick middle.

7. The sound attenuation mechanism for a natural gas compressor of claim 2, wherein, The flow guide entity (131) is fixedly arranged at the bottom of the second expansion chamber (13), and the top of the flow guide entity (131) is a symmetrically two-halves arc-shaped entity.

8. The sound attenuation mechanism for a natural gas compressor of claim 1, wherein, The reflection plate (15) is a poor arc, and a plurality of through holes are arranged through the reflection plate (15).

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