CN219143787U - Multistage energy dissipation noise suppression steam exhaust muffler - Google Patents

Abstract

The utility model discloses a multistage energy-dissipation noise-suppression steam exhaust muffler, which relates to the technical field of exhaust mufflers and aims to solve the problem that the exhaust muffler in the prior art only reduces noise through the matching time among a noise elimination elbow, a noise elimination wedge and sound absorption cotton, the noise is not blocked during the propagation of sound waves, and the noise reduction effect is limited.

Description

Multistage energy dissipation noise suppression steam exhaust muffler

Technical Field

The utility model relates to the technical field of exhaust mufflers, in particular to a multistage energy-dissipation noise-suppression steam exhaust muffler.

Background

The steam exhaust muffler is a product which aims at steam exhaust noise. The exhaust silencer of the through-hole type steam safety valve has the advantages that excessive noise is avoided, air flow is smoothly discharged without affecting the discharge capacity, the take-off and the seat returning of the safety valve, the silencing and noise reducing means of the conventional multi-stage throttling and small hole injection are not suitable for being adopted, and the limitation is a design difficulty of the silencer of the safety valve and the reason that the silencing effect of the silencer of the safety valve is poor. The steam exhaust muffler of the safety valve adopts the jet impedance composite noise elimination principle, wherein a large hole expansion is used for replacing a flow control hole with a smaller diameter, so that the resistance and the resistive noise elimination noise reduction mechanism are structurally enhanced, and the more ideal noise elimination noise reduction effect is achieved.

Chinese patent publication No. CN212411571U, grant bulletin day 2021 1 month and 26 days, steam high temperature exhaust muffler, including the wall body, the wall body is equipped with the support, support fixedly connected with steam vent-pipe, steam vent-pipe cooperation is provided with the blast pipe muffler, the blast pipe muffler passes through support and wall body cooperation and connects, steam vent-pipe is connected with the noise elimination elbow through the connecting seat is removable, noise elimination elbow cooperation is provided with noise elimination wedge, noise elimination wedge and wall body fixed connection. According to the utility model, the high-temperature exhaust muffler is arranged, so that the exhaust muffler of the steam exhaust pipe can eliminate noise generated by steam flowing in the working process of the steam exhaust pipe, and meanwhile, the silencing pipe is arranged on the silencing elbow, so that the steam can be used for silencing the outlet of the steam exhaust pipe in the discharging process, and multiple silencing works are carried out by matching with the silencing wedge, so that the noise in the steam discharging process is minimized, and the use safety of equipment is improved.

Although the exhaust muffler of the above prior art scheme can reduce the noise during the steam exhaust, the exhaust muffler only reduces the noise by the cooperation time among the silencing elbow, the silencing wedge and the sound absorbing cotton, and does not block the propagation of the sound wave, so that the noise reduction effect is limited, and therefore, we propose a multi-stage energy-dissipation noise-suppression steam exhaust muffler so as to solve the problems mentioned in the above.

Disclosure of Invention

The utility model aims to provide a multistage energy-dissipation noise-suppression steam exhaust muffler, which aims to solve the problem that the exhaust muffler provided by the prior art in the background art only reduces noise through the matching time among a noise-elimination elbow, a noise-elimination wedge and sound-absorption cotton, does not block the propagation of sound waves, and has limited noise reduction effect.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a multistage energy dissipation noise suppression steam exhaust silencer, includes the casing, one side of casing top is provided with the intake pipe, the opposite side of casing below is provided with the outlet duct, the below sealing connection of intake pipe has first interior trachea, the top sealing connection of outlet duct has second interior trachea, first interior trachea and second interior trachea are located the inside of casing, and first interior trachea is located one side of second interior trachea, the inside equidistance of casing is provided with two baffles, the outside of first interior trachea lower extreme is provided with first suction frame mechanism, the outside of second interior trachea upper end is provided with second suction frame mechanism, the outside of first interior trachea intermediate position department is provided with first amortization mechanism, the outside of second interior trachea intermediate position department is provided with second amortization mechanism, first amortization mechanism includes acoustic panel on the first amortization mechanism, acoustic panel in the first amortization mechanism and second acoustic panel, second acoustic panel on the second mechanism includes second acoustic panel, second amortization cotton.

Preferably, a baffle is arranged between the baffle and the shell and at the middle position between the two baffles, a filter screen is arranged in the middle of the baffle, the first inner air pipe is positioned at one side of the baffle, and the second inner air pipe is positioned at the other side of the baffle.

Preferably, one side of the baffle below and the other side of the baffle above are both provided with vent holes, the vent holes below are symmetrical about the first inner air pipe, and the vent holes above are symmetrical about the second inner air pipe.

Preferably, one side of the inner wall of the lower end of the shell and the other side of the inner wall of the upper end of the shell, and the other side of the lower end of the partition plate and one side of the upper end of the partition plate are respectively provided with a first sound-absorbing cotton block, the first sound-absorbing cotton block below is positioned at two sides of the lower end of the first inner air pipe, and the first sound-absorbing cotton block above is positioned at two sides of the upper end of the second inner air pipe.

Preferably, the upper end of the first silencing mechanism is provided with a second sound absorbing cotton piece, the second sound absorbing cotton piece is fixedly connected with the lower end face on one side of the upper baffle, the lower end of the first silencing mechanism is provided with a first sound absorbing plate under the silencing mechanism, the first sound absorbing plate is fixedly connected with the upper end face on one side of the lower baffle, the middle position of one side of the first sound absorbing plate under the silencing mechanism is provided with a first sound absorbing plate in the silencing mechanism, the upper end of the first sound absorbing plate in the silencing mechanism is fixedly connected with the inner wall of the first sound absorbing plate under the silencing mechanism, the diameter of the second sound absorbing cotton piece is gradually reduced from top to bottom, the diameter of the first sound absorbing plate is gradually increased from top to bottom under the silencing mechanism, and the first sound absorbing plate and the inner wall of the first sound absorbing plate under the silencing mechanism and the outer wall of the first sound absorbing plate are respectively attached with the second sound absorbing cotton piece.

Preferably, the upper end of the second silencing mechanism is provided with a second silencing mechanism upper sound absorbing plate, the second silencing mechanism upper sound absorbing plate is fixedly connected with the lower end face of the other side of the upper baffle, the lower end of the second silencing mechanism is provided with a second silencing mechanism lower sound absorbing plate, the second silencing mechanism lower sound absorbing plate is fixedly connected with the upper end face of the other side of the lower baffle, the second silencing mechanism upper sound absorbing plate is internally provided with a second silencing mechanism inner sound absorbing plate, the upper end of the second silencing mechanism inner sound absorbing plate is fixedly connected with the inner wall of the second silencing mechanism upper sound absorbing plate, the diameter of the second silencing mechanism upper sound absorbing plate gradually reduces from top to bottom, the diameter of the second silencing mechanism inner sound absorbing plate gradually reduces from top to bottom, and the diameter of the second silencing mechanism lower sound absorbing plate gradually increases from top to bottom.

Preferably, the first suction frame mechanism and the second suction frame mechanism comprise a first wave folded plate and a second wave folded plate, the first wave folded plate and the second wave folded plate are arranged in a staggered mode, the first wave folded plate of the first suction frame mechanism is fixedly connected with the inner wall of the shell, the second wave folded plate of the first suction frame mechanism is fixedly connected with one side of the lower end of the partition plate, and wave peaks of the first wave folded plate and the second wave folded plate of the first suction frame mechanism are opposite.

Preferably, the first wave folded plate of the second suction frame mechanism is fixedly connected with the other side of the upper end of the partition plate, the second wave folded plate of the second suction frame mechanism is fixedly connected with the inner wall of the shell, and the waves of the first wave folded plate and the second wave folded plate of the second suction frame mechanism are the same.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the contact area with sound waves can be increased through the inclined arrangement of the first silencing mechanism and the first silencing mechanism, meanwhile, the sound waves can only pass through gaps of the sound absorbing plates, so that the sound waves can be absorbed and reflected by the second sound absorbing cotton sheets to the greatest extent, the sound waves of fast flowing steam can be shielded layer by layer after steam is sprayed out and before the steam is sucked in through the arrangement of the first suction frame mechanism and the second suction frame mechanism, partial capacities of the sound waves can be absorbed and reflected through the arrangement of the wave folds, so that the noise of the sound waves can be gradually reduced, effective noise suppression is realized, multistage energy dissipation is realized through the arrangement of a plurality of structures, and the problem that the exhaust muffler in the prior art is limited in noise reduction effect because the exhaust muffler is only noise reduced through the cooperation time among the silencing elbow, the silencing wedge and the sound absorbing cotton and does not block the propagation of the sound waves is solved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a perspective view of a first silencing mechanism of the present utility model;

fig. 3 is a perspective view of a second silencing mechanism according to the present utility model.

In the figure: 1. a housing; 2. an air inlet pipe; 3. an air outlet pipe; 4. a first inner air tube; 5. a first silencing mechanism; 6. a first suction frame mechanism; 7. a first sound-absorbing cotton block; 8. a second inner airway; 9. an air inlet hole; 10. a second silencing mechanism; 11. a first wave flap; 12. a second wave flap; 13. a sound absorbing plate is arranged on the first silencing mechanism; 14. a first sound absorbing mechanism lower sound absorbing plate; 15. a sound absorbing plate in the first silencing mechanism; 16. a second sound absorbing cotton sheet; 17. a sound absorbing plate is arranged on the second silencing mechanism; 18. a sound absorbing plate in the second silencing mechanism; 19. a second sound absorbing plate under the second silencing mechanism; 20. an air outlet hole; 21. a second suction frame mechanism; 22. a partition plate; 23. a filter screen; 24. a baffle; 25. and a vent hole.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-3, an embodiment of the present utility model is provided: the utility model provides a multistage energy dissipation noise suppression steam exhaust silencer, which comprises a housin 1, one side of casing 1 top is provided with intake pipe 2, the opposite side of casing 1 below is provided with outlet duct 3, the below sealing connection of intake pipe 2 has first interior trachea 4, the top sealing connection of outlet duct 3 has second interior trachea 8, first interior trachea 4 and second interior trachea 8 are located the inside of casing 1, and first interior trachea 4 is located one side of second interior trachea 8, the inside equidistance of casing 1 is provided with two baffles 24, the outside of first interior trachea 4 lower extreme is provided with first suction frame mechanism 6, the outside of second interior trachea 8 upper end is provided with second suction frame mechanism 21, the outside of first interior trachea 4 intermediate position department is provided with first amortization mechanism 5, the outside of second interior trachea 8 intermediate position department is provided with second amortization mechanism 10, first amortization mechanism 5 includes first amortization mechanism upper acoustic panel 13, first mechanism lower acoustic panel 14, first amortization mechanism interior acoustic panel 15 and second acoustic panel 16, second amortization cotton piece 10 includes second amortization cotton piece 16, second amortization cotton piece 17, second amortization mechanism lower acoustic panel 18.

Referring to fig. 1, a partition 22 is disposed between the baffle 24 and the housing 1 and at an intermediate position between the two baffles 24, a filter screen 23 is disposed in the intermediate partition 22, the first inner air pipe 4 is disposed on one side of the partition 22, and the second inner air pipe 8 is disposed on the other side of the partition 22. The lower baffle plate 24 is provided with vent holes 25 on one side and the other side of the upper baffle plate 24, the lower vent holes 25 are symmetrical with respect to the first inner air pipe 4, and the upper vent holes 25 are symmetrical with respect to the second inner air pipe 8. One side of the inner wall of the lower end of the shell 1 and the other side of the inner wall of the upper end of the shell are respectively provided with a first sound-absorbing cotton block 7, the lower first sound-absorbing cotton block 7 is positioned on two sides of the lower end of the first inner air pipe 4, and the upper first sound-absorbing cotton block 7 is positioned on two sides of the upper end of the second inner air pipe 8.

Referring to fig. 2, a second sound absorbing cotton sheet 16 is disposed at an upper end of the first sound attenuation mechanism 5, the second sound absorbing cotton sheet 16 is fixedly connected with a lower end surface on one side of the upper baffle 24, a first sound attenuation mechanism lower sound absorbing plate 14 is disposed at a lower end of the first sound attenuation mechanism 5, the first sound attenuation mechanism lower sound absorbing plate 14 is fixedly connected with an upper end surface on one side of the lower baffle 24, a first sound attenuation mechanism inner sound absorbing plate 15 is disposed at a middle position on one side of the first sound attenuation mechanism lower sound absorbing plate 14, an upper end of the first sound attenuation mechanism inner sound absorbing plate 15 is fixedly connected with an inner wall of the first sound attenuation mechanism lower sound absorbing plate 14, a diameter of the second sound absorbing cotton sheet 16 gradually decreases from top to bottom, a diameter of the first sound attenuation mechanism lower sound absorbing plate 14 gradually increases from top to bottom, a diameter of the first sound attenuation mechanism inner sound absorbing plate 15 gradually decreases from top to bottom, and the first sound attenuation mechanism upper sound absorbing plate 13 and the inner wall of the first sound attenuation mechanism lower sound absorbing plate 14 and an outer wall of the first sound attenuation mechanism inner plate 15 are adhered with the second sound absorbing cotton sheet 16.

Referring to fig. 3, an upper end of the second silencing mechanism 10 is provided with a second silencing mechanism upper sound absorbing plate 17, the second silencing mechanism upper sound absorbing plate 17 is fixedly connected with a lower end surface on the other side of the upper baffle 24, a lower end of the second silencing mechanism 10 is provided with a second silencing mechanism lower sound absorbing plate 19, the second silencing mechanism lower sound absorbing plate 19 is fixedly connected with an upper end surface on the other side of the lower baffle 24, an inner second silencing mechanism sound absorbing plate 18 is arranged in the second silencing mechanism upper sound absorbing plate 17, an upper end of the second silencing mechanism inner sound absorbing plate 18 is fixedly connected with an inner wall of the second silencing mechanism upper sound absorbing plate 17, the diameter of the second silencing mechanism upper sound absorbing plate 17 is gradually reduced from top to bottom, the diameter of the second silencing mechanism inner sound absorbing plate 18 is gradually reduced from top to bottom, and the diameter of the second silencing mechanism lower sound absorbing plate 19 is gradually increased from top to bottom, and the inner wall of the second silencing mechanism upper sound absorbing plate 17, the outer wall of the second silencing mechanism inner sound absorbing plate 18 and the outer wall of the second silencing mechanism lower sound absorbing plate 19 are respectively adhered with a second sound absorbing cotton sheet 16.

Referring to fig. 1, the first suction frame mechanism 6 and the second suction frame mechanism 21 include a first wave folded plate 11 and a second wave folded plate 12, the first wave folded plate 11 and the second wave folded plate 12 are arranged in a staggered manner, the first wave folded plate 11 of the first suction frame mechanism 6 is fixedly connected with the inner wall of the shell 1, the second wave folded plate 12 of the first suction frame mechanism 6 is fixedly connected with one side of the lower end of the partition 22, and the wave peaks of the first wave folded plate 11 and the second wave folded plate 12 of the first suction frame mechanism 6 are opposite. The first wave folded plate 11 of the second suction frame mechanism 21 is fixedly connected with the other side of the upper end of the partition plate 22, the second wave folded plate 12 of the second suction frame mechanism 21 is fixedly connected with the inner wall of the shell 1, and the waves of the first wave folded plate 11 and the second wave folded plate 12 of the second suction frame mechanism 21 are the same.

Working principle: in use, steam enters the first inner air pipe 4 through the air inlet pipe 2, the steam enters the shell 1 through the air outlet hole 20, the steam is isolated at one side of the lower end of the first inner air pipe 4 by the baffle plate 22, the steam contacts with the first sound-absorbing cotton block 7, the first sound-absorbing cotton block 7 absorbs part of the noise of high-pressure steam, the steam contacts with the first wave folded plate 11 and the second wave folded plate 12 of the first suction frame mechanism 6, the noise of the steam is bounced when contacting with the wave folded plate, so that part of the noise is reduced, the steam passes through the vent holes 25 to enter the inside of the first sound-absorbing mechanism 5, the sound wave is guided by the first sound-absorbing mechanism lower sound-absorbing plate 14, is blocked by the sound-absorbing plate 15 in the inclined first sound-absorbing mechanism, passes through the gap between the lower end of the first sound-absorbing plate 15 and the first inner air pipe 4, contacts with the upper end of the first sound-absorbing mechanism lower sound-absorbing plate 14 and passes through the gap between the first sound-absorbing plate 14 and the first sound-absorbing mechanism lower sound-absorbing plate 13, the sound wave of the steam is absorbed by the second sound absorbing cotton piece 16 on the surface of the first silencing mechanism 5, the steam passes through the filter screen 23 to come out of the second silencing mechanism 10, the steam passes through the gap between the second sound absorbing cotton piece 16 and the sound absorbing plate 17 on the second silencing mechanism, the steam enters the inside of the second sound absorbing cotton piece through the guide of the sound absorbing plate 17 on the second silencing mechanism and is then absorbed by the sound wave of the sound absorbing plate 18 in the second silencing mechanism, the steam passes through the gap between the sound absorbing plate 18 in the second silencing mechanism and the second inner air pipe 8, the sound wave of the steam is absorbed by the second sound absorbing cotton piece 16 on the surface of the second silencing mechanism 10 again, the steam passes through the vent holes 25 to contact the first wave folding plate 11 and the second wave folding plate 12 of the second suction frame mechanism 21, the sound wave can be absorbed by the rebound part when the noise of the steam contacts with the wave folding plate, then the first sound-absorbing cotton block 7 on one side of the upper end of the second inner air pipe 8 absorbs sound, enters the second inner air pipe 8 through the air inlet hole 9, and finally is discharged through the air outlet pipe 3.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (8)

1. The utility model provides a multistage energy dissipation noise suppression steam exhaust silencer, includes casing (1), one side of casing (1) top is provided with intake pipe (2), the opposite side of casing (1) below is provided with outlet duct (3), the below sealing connection of intake pipe (2) has first interior trachea (4), the top sealing connection of outlet duct (3) has second interior trachea (8), first interior trachea (4) and second interior trachea (8) are located the inside of casing (1), and first interior trachea (4) are located one side of second interior trachea (8), its characterized in that: the inside equidistance of casing (1) is provided with two baffles (24), the outside of first interior trachea (4) lower extreme is provided with first suction rack mechanism (6), the outside of second interior trachea (8) upper end is provided with second suction rack mechanism (21), the outside of first interior trachea (4) intermediate position department is provided with first amortization mechanism (5), the outside of second interior trachea (8) intermediate position department is provided with second amortization mechanism (10), first amortization mechanism (5) are including first amortization mechanism upper acoustic panel (13), first amortization mechanism lower acoustic panel (14), first amortization mechanism interior acoustic panel (15) and second acoustic cotton piece (16), second amortization mechanism (10) are including second acoustic cotton piece (16), second amortization mechanism upper acoustic panel (17), second amortization mechanism interior acoustic panel (18) and second mechanism lower acoustic panel (19).

2. A multi-stage energy dissipating noise suppressing steam exhaust muffler as defined in claim 1, wherein: baffle (22) are arranged between baffle (24) and casing (1) and in intermediate position department between two baffles (24), and the centre the inside of baffle (22) is provided with filter screen (23), first interior trachea (4) are located one side of baffle (22), and second interior trachea (8) are located the opposite side of baffle (22).

3. A multi-stage energy dissipating noise suppressing steam exhaust muffler as defined in claim 1, wherein: the air vents (25) are arranged on one side of the baffle plate (24) below and the other side of the baffle plate (24) above, the air vents (25) below are symmetrical with respect to the first inner air pipe (4), and the air vents (25) above are symmetrical with respect to the second inner air pipe (8).

4. A multi-stage energy dissipating noise suppressing steam exhaust muffler as defined in claim 1, wherein: one side of the inner wall of the lower end of the shell (1) and the other side of the inner wall of the upper end of the shell are respectively provided with a first sound-absorbing cotton block (7), the lower side of the first sound-absorbing cotton block (7) is positioned on two sides of the lower end of the first inner air pipe (4), and the upper side of the first sound-absorbing cotton block (7) is positioned on two sides of the upper end of the second inner air pipe (8).

5. A multi-stage energy dissipating noise suppressing steam exhaust muffler as defined in claim 1, wherein: the upper end of first amortization mechanism (5) is provided with the cotton piece (16) of second sound absorption, and the cotton piece (16) of second sound absorption and the lower terminal surface fixed connection of upper baffle (24) one side, the lower extreme of first amortization mechanism (5) is provided with the acoustic panel (14) under the first amortization mechanism, and the acoustic panel (14) under the first amortization mechanism and the up end fixed connection of lower baffle (24) one side, the intermediate position department of acoustic panel (14) one side is provided with acoustic panel (15) in the first amortization mechanism under the first amortization mechanism, and the inner wall fixed connection of acoustic panel (14) under the first amortization mechanism in the upper end of acoustic panel (15) and the first amortization mechanism, the diameter top-down of the cotton piece (16) of second sound absorption reduces gradually, the diameter of acoustic panel (14) under the first amortization mechanism increases gradually, the top-down of acoustic panel (15) reduces gradually, the first amortization mechanism is gone up acoustic panel (13) and the inner wall of acoustic panel (14) under the first amortization mechanism, the equal laminating of acoustic panel (16) of first amortization mechanism.

6. A multi-stage energy dissipating noise suppressing steam exhaust muffler as defined in claim 1, wherein: the upper end of second amortization mechanism (10) is provided with abatvoix (17) on the second amortization mechanism, and the lower terminal surface fixed connection of abatvoix (17) on the second amortization mechanism and top baffle (24) opposite side, the lower extreme of second amortization mechanism (10) is provided with abatvoix (19) under the second amortization mechanism, and the up end fixed connection of abatvoix (19) and below baffle (24) opposite side under the second amortization mechanism, the inside of abatvoix (17) is provided with abatvoix (18) in the second amortization mechanism, and the upper end of abatvoix (18) in the second amortization mechanism and the inner wall fixed connection of abatvoix (17) on the second amortization mechanism, the diameter top-down of abatvoix (17) reduces gradually, the diameter top-down of abatvoix (18) in the second amortization mechanism reduces gradually, the diameter of abatvoix (19) under the second amortization mechanism increases gradually, the inner wall of abatvoix (17) in the second amortization mechanism, the inside of abatvoix (18) and the second amortization mechanism outside (16) all laminate (16).

7. A multi-stage energy dissipating noise suppressing steam exhaust muffler as defined in claim 1, wherein: first suction frame mechanism (6) and second suction frame mechanism (21) are including first ripples folded plate (11) and second ripples folded plate (12), and first ripples folded plate (11) and second ripples folded plate (12) dislocation set, first ripples folded plate (11) of first suction frame mechanism (6) are with the inner wall fixed connection of casing (1), one side fixed connection of second ripples folded plate (12) of first suction frame mechanism (6) and baffle (22) lower extreme, and the crest of first ripples folded plate (11) of first suction frame mechanism (6) and second ripples folded plate (12) is relative.

8. A multi-stage energy dissipating noise suppressing steam exhaust muffler as defined in claim 1, wherein: the first wave folded plate (11) of the second suction frame mechanism (21) is fixedly connected with the other side of the upper end of the partition plate (22), the second wave folded plate (12) of the second suction frame mechanism (21) is fixedly connected with the inner wall of the shell (1), and the waves of the first wave folded plate (11) and the second wave folded plate (12) of the second suction frame mechanism (21) are the same.

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