A composite silencer for gas pipeline

Abstract

The present invention relates to the field of silencers, specifically a composite silencer for gas pipelines, including an air intake pipe, one end of the air intake pipe penetrates and is fixedly connected to flange 1, the other end penetrates and is fixedly connected to a shell, and the end of the shell away from the air intake pipe penetrates and is fixedly connected to flange 2, the shell is a bell-shaped structure, and a pipe wall sound-absorbing net is fixed on the inner wall of the shell, and the pipe wall sound-absorbing net is a sound-absorbing material composed of multiple layers of metal woven nets; a silencer pipe and a silencer orifice plate are arranged in the shell, one end of the silencer pipe is connected to the air intake pipe, and a plurality of small holes are opened on the peripheral wall of the silencer pipe, a plugging cover is fixed on the end of the silencer pipe away from the air intake pipe, and the silencer orifice plate is located at one end of the inner side of the shell near flange 2. This composite silencer for gas pipelines plays the role of diverting and stabilizing the flow of airflow, and reduces the flow velocity of pipeline gas, absorbs sound and reduces noise transmission while ensuring that the pipeline delivery flow rate remains unchanged, thereby achieving a good silencer effect.

Description

Technical Field

[0001] The invention relates to the field of silencers, in particular to a gas pipeline composite silencer. Background Art

[0002] When gas is transported through pipelines, in order to reduce the transportation cost, high pressure is used for transportation. Before it is delivered to the destination, the gas pressure reducing valve is used to reduce and stabilize the pressure, and the gas equipment is used to obtain a stable gas source with a lower pressure. While the gas pressure reducing valve is reducing and stabilizing the pressure, it will generate noise, thus causing noise pollution, which is unacceptable. In view of this, we propose a gas pipeline composite silencer. Summary of the invention

[0003] The purpose of the present invention is to provide a gas pipeline composite silencer to solve the problems raised in the above background technology. To achieve the above purpose, the present invention provides the following technical solutions: a gas pipeline composite silencer, including an air intake pipe, one end of the air intake pipe penetrates and is fixedly connected to flange 1, the other end penetrates and is fixedly connected to a shell, and the end of the shell away from the air intake pipe penetrates and is fixedly connected to flange 2, the shell is a bell-shaped structure, and a pipe wall sound-absorbing net is fixed on the inner wall of the shell, and the pipe wall sound-absorbing net is a sound-absorbing material composed of multiple layers of metal woven nets;

[0004] A silencer pipe and a silencer hole plate are arranged in the shell. One end of the silencer pipe is connected to the air inlet pipe, and a plurality of small holes are opened on the peripheral wall of the silencer pipe. A plugging cover is fixed to the end of the silencer pipe away from the air inlet pipe, and the silencer hole plate is located at one end of the inner side of the shell close to flange 2.

[0005] Preferably, one end of the silencer pipe away from the plugging cover is integrally fixedly connected to the air intake pipe, the center of the plugging cover and the center of the silencer hole plate are fixedly connected by a bolt assembly, and the outer peripheral wall of the silencer hole plate is fitted with the inner wall of the outer shell, and the pipe wall sound-absorbing net is located on the side of the silencer hole plate facing the silencer pipe.

[0006] Preferably, the end face of the silencer pipe away from the plugging cover is coaxially fixedly connected to a turntable bearing, and an impeller is fixed on the inner wall of this end; the plugging cover is vertically and fixedly connected to a reciprocating screw at the center position of a side away from the silencer pipe, and the other end of the reciprocating screw is rotatably connected to the silencer hole plate.

[0007] Preferably, an annular protrusion is fixed on the inner wall of the shell, and the sound-absorbing hole plate is fixed on the annular protrusion by a plurality of screws, and the sound-absorbing hole plate and the pipe wall sound-absorbing net are located on both sides of the annular protrusion.

[0008] Preferably, the muffler hole plate is perpendicularly and fixedly connected to a plurality of sliding rods on one side facing the reciprocating screw rod, and the plurality of sliding rods are arranged at equal intervals along the circumferential direction.

[0009] Preferably, the injection direction of the small hole is at an angle of 45° to 135° to the central axis of the muffler.

[0010] Preferably, an annular plate is sleeved on and fixedly connected to the outer peripheral wall of one end of the air inlet pipe inside the shell, and a plurality of grooves are provided on the side of the annular plate facing the silencer hole plate, and the plurality of grooves are arranged one-to-one correspondingly to the plurality of sliding rods, the opening structure of the grooves is an outward-expanding cone, and the end of the sliding rod away from the silencer hole plate is inserted into the corresponding groove.

[0011] Preferably, a sliding sleeve is sleeved on and adapted to be slidably connected to the reciprocating screw rod, a plurality of support rods are fixed on the outer peripheral wall of the sliding sleeve, and the plurality of support rods are arranged in a one-to-one correspondence with the plurality of sliding rods.

[0012] Preferably, a push-pull rod is fixed to one end of the support rod away from the sliding sleeve, and the push-pull rod and the sliding rod are arranged parallel to each other. A sliding block is fixed to one end of the push-pull rod away from the support rod, and the sliding block is slidably connected to the corresponding sliding rod.

[0013] Preferably, the push-pull rod is rotatably connected to a plurality of shafts, and the shafts are arranged perpendicular to the central axis of the silencer pipe. One end of the shaft pointing to the silencer pipe is coaxially fixedly connected to the impeller, and the other end of the silencer pipe is coaxially fixedly connected to the gear. A tooth structure is provided on the side wall of the sliding rod along the length, and the gear is meshingly connected with the corresponding tooth structure.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In the present invention, a silencer pipe, a pipe wall sound-absorbing net and a silencer orifice plate are arranged in the shell, so that after the airflow is discharged into the shell through the small holes on the peripheral wall of the silencer pipe, the airflow speed slows down due to the expansion of the pipe diameter, and the small holes play a role in diverting and stabilizing the airflow, thereby greatly reducing the vibration and noise of the airflow, and the noise is absorbed by the pipe wall sound-absorbing net composed of multiple layers of metal woven mesh, thereby improving the sound-absorbing effect, and the airflow in the shell is silenced and noise-reduced again through the holes on the silencer orifice plate, so that the pipeline gas flow speed is reduced, the sound is absorbed and the noise transmission is reduced while ensuring that the pipeline transportation flow rate remains unchanged, thereby achieving a good sound-absorbing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The schematic diagram of the cross-sectional structure of the general assembly of the present invention is shown in FIG. Figure 1 ;

[0017] Figure 2 The schematic diagram of the cross-sectional structure of the general assembly of the present invention is shown in FIG. Figure 2 ;

[0018] Figure 3 for Figure 1 A is an enlarged structural diagram;

[0019] Figure 4 It is a schematic diagram of the structure of the sound-absorbing hole plate in the present invention.

[0020] In the figure: 1. Flange 1; 2. Inlet pipe; 3. Shell; 4. Flange 2; 5. Silencer; 6. Sound-absorbing net on the pipe wall; 7. Plug cover; 8. Silencer hole plate; 9. Bolt assembly; 10. Small hole; 11. Annular convexity; 12. Screw; 13. Reciprocating screw; 14. Sliding sleeve; 15. Support rod; 16. Sliding rod; 17. Impeller; 18. Turntable bearing; 19. Push-pull rod; 20. Ring plate; 21. Groove; 22. Tooth structure; 23. Shaft; 24. Gear; 25. Fan wheel; 26. Sliding block. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1

[0023] See also Figure 1 and Figure 4 The present invention provides a technical solution: a gas pipeline composite silencer, comprising an air intake pipe 2, one end of the air intake pipe 2 penetrates and is fixedly connected to a flange 1, and the other end penetrates and is fixedly connected to a shell 3, and the end of the shell 3 away from the air intake pipe 2 penetrates and is fixedly connected to a flange 2 4, the shell 3 is a bell-shaped structure, and a pipe wall sound-absorbing net 6 is fixed on the inner wall of the shell 3, and the pipe wall sound-absorbing net 6 is a sound-absorbing material composed of multiple layers of metal woven nets;

[0024] A silencer pipe 5 and a silencer hole plate 8 are arranged in the shell 3. One end of the silencer pipe 5 is connected to the air inlet pipe 2, and a plurality of small holes 10 are opened on the surrounding wall of the silencer pipe 5. A plugging cover 7 is fixed to the end of the silencer pipe 5 away from the air inlet pipe 2, and the silencer hole plate 8 is located at one end of the inner side of the shell 3 close to the flange 2 4.

[0025] In the present embodiment, one end of the silencer pipe 5 away from the plugging cover 7 is integrally fixedly connected to the air intake pipe 2, the center of the plugging cover 7 is fixedly connected to the center of the silencer hole plate 8 by a bolt assembly 9, and the outer peripheral wall of the silencer hole plate 8 is fitted with the inner wall of the outer shell 3, and the pipe wall sound-absorbing net 6 is located on the side of the silencer hole plate 8 facing the silencer pipe 5.

[0026] Working principle and advantages of the present invention: When the gas pipeline composite silencer is in use, the working process is as follows:

[0027] like Figure 1 and Figure 4 As shown, the silencer orifice plate 8 is fixed to the plug cover 7 of the silencer pipe 5 by a bolt assembly 9, and is connected and fixed to the air outlet port of the pressure reducing valve by a flange 1, and a flange 2 4 is connected to the air outlet pipe. The gas after the pressure reduction and stabilization by the pressure reducing valve enters the air inlet pipe 2 and is transported to the silencer pipe 5, and then is discharged to the shell 3 through the small holes 10 on the peripheral wall of the silencer pipe 5. At this time, the pipe diameter is enlarged, the air flow speed is slowed down, and the small holes 10 on the peripheral wall of the silencer pipe 5 play a role in diverting and stabilizing the air flow, thereby greatly reducing the vibration and noise of the air flow, and the noise is absorbed by the sound-absorbing material pipe wall sound-absorbing net 6 composed of multiple layers of metal woven mesh, thereby improving the silencing effect. The airflow in the shell 3 passes through the holes on the silencer orifice plate 8 for silencing and noise reduction again, so as to achieve the reduction of the pipeline gas flow speed (noise reduction), the absorption of sound and the reduction of noise transmission while ensuring that the pipeline delivery flow rate remains unchanged (no gas flow resistance or the gas flow resistance is reduced to a very small value), and a good silencing effect is achieved.

[0028] Example 2

[0029] See also Figures 2 to 4 The present invention provides a technical solution: a gas pipeline composite silencer, comprising an air intake pipe 2, one end of the air intake pipe 2 penetrates and is fixedly connected to a flange 1, and the other end penetrates and is fixedly connected to a shell 3, and the end of the shell 3 away from the air intake pipe 2 penetrates and is fixedly connected to a flange 2 4, the shell 3 is a bell-shaped structure, and a pipe wall sound-absorbing net 6 is fixed on the inner wall of the shell 3, and the pipe wall sound-absorbing net 6 is a sound-absorbing material composed of multiple layers of metal woven nets;

[0030] A silencer pipe 5 and a silencer hole plate 8 are arranged in the shell 3. One end of the silencer pipe 5 is connected to the air inlet pipe 2, and a plurality of small holes 10 are opened on the surrounding wall of the silencer pipe 5. A plugging cover 7 is fixed to the end of the silencer pipe 5 away from the air inlet pipe 2, and the silencer hole plate 8 is located at one end of the inner side of the shell 3 close to the flange 2 4.

[0031] In the present embodiment, a turntable bearing 18 is coaxially fixedly connected to the end face of the silencer pipe 5 away from the plugging cover 7, and an impeller 17 is fixed on the inner wall of the end, the plugging cover 7 is perpendicularly and fixedly connected to the reciprocating screw 13 at the center position of the side away from the silencer pipe 5, and the other end of the reciprocating screw 13 is fixedly connected to the silencer hole plate 8 for rotation, the injection direction of the small hole 10 is at an angle of 45° to 135° with the central axis of the silencer pipe 5, an annular protrusion 11 is fixed on the inner wall of the outer shell 3, and the silencer hole plate 8 is fixed on the annular protrusion 11 by a plurality of screws 12, and the silencer hole plate 8 and the pipe wall sound-absorbing net 6 are located on both sides of the annular protrusion 11.

[0032] In the present embodiment, the silencer hole plate 8 is perpendicularly and fixedly connected to a plurality of slide rods 16 on one side facing the reciprocating screw rod 13, and the plurality of slide rods 16 are arranged at equal intervals along the circumferential direction, and a ring plate 20 is sleeved and fixedly connected on the outer peripheral wall of one end of the air inlet pipe 2 located inside the shell 3, and the ring plate 20 is provided with a plurality of grooves 21 on the side facing the silencer hole plate 8, and the plurality of grooves 21 are arranged one by one with the plurality of slide rods 16, and the opening structure of the grooves 21 is an outwardly expanded cone, and the opening structure of the grooves 21 helps to guide the end of the slide rod 16, thereby reducing the difficulty of installation, and the end of the slide rod 16 away from the silencer hole plate 8 is inserted into the corresponding groove 21.

[0033] In this embodiment, a sliding sleeve 14 is sleeved and adapted to be slidably connected on the reciprocating screw rod 13, a plurality of support rods 15 are fixed on the outer peripheral wall of the sliding sleeve 14, and the plurality of support rods 15 are arranged one-to-one with the plurality of sliding rods 16, a push-pull rod 19 is fixed on the end of the support rod 15 away from the sliding sleeve 14, and the push-pull rod 19 and the sliding rod 16 are arranged parallel to each other, a slider 26 is fixed on the end of the push-pull rod 19 away from the support rod 15, and the slider 26 is slidably connected to the corresponding sliding rod 16, a plurality of shaft rods 23 are connected to the push-pull rod 19 for fixed-axis rotation, and the shaft rod 23 is arranged perpendicular to the central axis of the silencer 5, one end of the shaft rod 23 pointing to the silencer 5 is coaxially fixedly connected to the impeller 25, and the other end of the silencer 5 is coaxially fixedly connected to the gear 24, a tooth structure 22 is opened on the side wall of the sliding rod 16 along the length, and the gear 24 is meshed and connected with the corresponding tooth structure 22.

[0034] Working principle and advantages of the present invention: When the gas pipeline composite silencer is in use, the working process is as follows:

[0035] like Figures 2 to 4As shown, the silencer hole plate 8 is fixed on the annular protrusion 11 by means of screws 12, and the turntable bearing 18 is buckled on the end surface of the intake pipe 2, the end of the slide rod 16 away from the silencer hole plate 8 is inserted into the corresponding groove 21, and then is connected and fixed to the outlet port of the pressure reducing valve by means of flange 1, and flange 2 4 is connected to the outlet pipe, and the gas after the pressure reduction and stabilization by the pressure reducing valve enters the intake pipe 2 and is transported to the silencer pipe 5, and then is discharged into the shell 3 through the various small holes 10 on the peripheral wall of the silencer pipe 5. At this time, the pipe diameter is enlarged, the air flow speed is slowed down, and the injection angle of the small holes 10 makes the air flow have different directions after entering the shell 3, and the air flow in the process of entering the silencer pipe 5 promotes the impeller 17, so that it drives the silencer pipe 5 to rotate, that is, the small hole 10 rotates while discharging the gas, thereby greatly improving the diversion and stabilization of the air flow, thereby greatly reducing the vibration and noise of the air flow, and through the sound-absorbing material pipe wall sound-absorbing mesh 6 composed of multiple layers of metal woven mesh Noise is absorbed, thereby improving the silencing effect. When the silencer pipe 5 rotates, the reciprocating screw 13 is driven to rotate synchronously through the plug cover 7, so that the sleeve 14 drives the corresponding push-pull rod 19 to move back and forth through the support rod 15, so that the push-pull rod 19 drives the shaft rod 23 and the fan wheel 25 thereon to move back and forth synchronously, thereby stirring the gas ejected from the small hole 10, and the shaft rod 23 moves while driving the gear 24 to rotate on the tooth structure 22 on the corresponding slide rod 16, so that the shaft rod 23 drives the fan wheel 25 to rotate, thereby improving the flow stabilization effect of the airflow, and the above-mentioned working process uses the kinetic energy of the airflow to do work, thereby further reducing the airflow speed, and then the airflow in the outer shell 3 passes through the holes on the silencer orifice plate 8 for silencing and noise reduction again, so as to ensure that the pipeline delivery flow rate remains unchanged (there is no gas flow resistance or the gas flow resistance is reduced to a very small value), reduce the pipeline gas flow speed (reduce noise), absorb sound and reduce noise transmission, and achieve a good silencing effect.

[0036] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and range of equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0037] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A gas pipeline composite silencer, comprising an air intake pipe (2), characterized in that: One end of the air intake pipe (2) passes through and is fixedly connected to flange one (1), and the other end passes through and is fixedly connected to the outer shell (3), and the end of the outer shell (3) away from the air intake pipe (2) passes through and is fixedly connected to flange two (4), the outer shell (3) is a bell-shaped structure, and a pipe wall sound-absorbing net (6) is fixed on the inner wall of the outer shell (3), and the pipe wall sound-absorbing net (6) is a sound-absorbing material composed of multiple layers of metal woven nets; A silencer pipe (5) and a silencer hole plate (8) are arranged in the shell (3); one end of the silencer pipe (5) is connected to the air inlet pipe (2), and a plurality of small holes (10) are opened on the peripheral wall of the silencer pipe (5); a plugging cover (7) is fixed to the end of the silencer pipe (5) away from the air inlet pipe (2), and the silencer hole plate (8) is located at one end of the inner side of the shell (3) close to the second flange (4); The end surface of the muffler pipe (5) away from the plug cover (7) is coaxially fixedly connected to a turntable bearing (18), and an impeller (17) is fixed on the inner wall of the end; the center position of the side of the plug cover (7) away from the muffler pipe (5) is vertically and fixedly connected to a reciprocating screw rod (13), and the other end of the reciprocating screw rod (13) is rotatably connected to the muffler hole plate (8), and the muffler hole plate (8) is vertically and fixedly connected to the side facing the reciprocating screw rod (13). A plurality of slide bars (16) are arranged at equal intervals along the circumferential direction; a ring plate (20) is sleeved and fixedly connected to the outer peripheral wall of one end of the air inlet pipe (2) located inside the shell (3); a plurality of grooves (21) are opened on the side of the ring plate (20) facing the muffler hole plate (8); and the plurality of grooves (21) are arranged one-to-one with the plurality of slide bars (16); a sliding ring (20) sleeved and matched with the reciprocating screw rod (13) is provided on the reciprocating screw rod (13); A sliding sleeve (14) is connected, a plurality of support rods (15) are fixed on the outer peripheral wall of the sliding sleeve (14), and the plurality of support rods (15) are arranged in a one-to-one correspondence with the plurality of sliding rods (16), a push-pull rod (19) is fixed to one end of the support rod (15) away from the sliding sleeve (14), and the push-pull rod (19) and the sliding rod (16) are arranged parallel to each other, and a slider (26) is fixed to one end of the push-pull rod (19) away from the support rod (15), and the slider (26) ) is slidably connected to the corresponding sliding rod (16), a plurality of shafts (23) are fixedly rotatably connected to the push-pull rod (19), one end of the shaft (23) pointing to the muffler (5) is coaxially fixedly connected to a fan wheel (25), and the other end of the muffler (5) is coaxially fixedly connected to a gear (24), and a tooth structure (22) is provided on the side wall of the sliding rod (16) along the length, and the gear (24) is meshingly connected to the corresponding tooth structure (22).

2. A gas pipeline composite silencer according to claim 1, characterized in that: An annular protrusion (11) is fixed on the inner wall of the shell (3), and a sound-absorbing hole plate (8) is fixed on the annular protrusion (11) by means of a plurality of screws (12), and the sound-absorbing hole plate (8) and the pipe wall sound-absorbing net (6) are located on both sides of the annular protrusion (11).

3. A gas pipeline composite silencer according to claim 1, characterized in that: The spraying direction of the small hole (10) and the central axis of the muffler pipe (5) are at an angle of 45° to 135°.

4. A gas pipeline composite silencer according to claim 1, characterized in that: The opening structure of the groove (21) is an outwardly expanding cone, and one end of the sliding rod (16) away from the muffler hole plate (8) is inserted into the corresponding groove (21).

5. The gas pipeline composite silencer according to claim 1, characterized in that: The shaft rod (23) is arranged perpendicular to the central axis of the muffler pipe (5).

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