CN214118480U - Impedance silencer for roots blower - Google Patents
Impedance silencer for roots blower Download PDFInfo
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- CN214118480U CN214118480U CN202023021714.0U CN202023021714U CN214118480U CN 214118480 U CN214118480 U CN 214118480U CN 202023021714 U CN202023021714 U CN 202023021714U CN 214118480 U CN214118480 U CN 214118480U
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Abstract
The utility model provides an impedance muffler for on roots blower, including outer barrel, resistance section and resistance section, resistance section with the resistance section sets up the urceolus is internal, resistance section and roots blower's exit linkage, outer barrel includes up end and lower terminal surface, be equipped with the shrouding on the up end, go up the first choke of shrouding intercommunication, be equipped with down the shrouding on the lower terminal surface, shrouding intercommunication second choke down, first choke with the resistance section is kept away from the one end of resistance section is neighbouring, second choke with the resistance section is kept away from the one end of resistance section is neighbouring, be equipped with first ring flange on the first choke, be equipped with the second ring flange on the second choke, the utility model discloses can eliminate the noise of low, well, high frequency concurrently, noise cancelling effect is more ideal, avoids environmental pollution.
Description
Technical Field
The utility model belongs to install the muffler on roots's blower, especially relate to an impedance muffler for roots's blower is last.
Background
Currently, the roots blower is a very commonly used industrial blower. The Roots blower conveying medium is clean air, clean coal gas, sulfur dioxide and other inert gases, and is a preferred product in special gas industries (coal gas, natural gas, biogas, carbon dioxide, sulfur dioxide and the like) and under high-pressure working conditions. In view of the characteristics, the method can be widely applied to the industries of metallurgy, chemical engineering, chemical fertilizer, petrifaction, instruments and building materials. The Roots blower generates large noise due to large and abrupt air volume sucked and discharged each time, and is called as a 'sound tiger' of mechanical products, particularly under the condition of high pressure, and the noise is larger when the air volume is larger, the pressure is higher, and the rotating speed is higher. The noise of the roots blower includes mechanical noise and aerodynamic noise, which in turn includes rotational noise and vortex noise. The mechanical noise mainly includes gear noise, bearing noise, pipeline vibration noise and the like. The Roots blower silencer is a special noise treatment appliance developed along with the continuous development of science and technology, is applied to a plurality of machines, has better effect, can reduce noise, is arranged on mechanical equipment and an engine, and has the best sound absorption effect.
Silencers are generally classified into two types: resistive mufflers and reactive mufflers. The resistance type silencer utilizes the sound absorption function of a sound absorption material or a sound absorption structure to attenuate the noise transmitted along the pipeline along with the increase of the distance, thereby achieving the aim of sound attenuation. Common sound absorption materials include fiberglass yarns, low-carbon steel wire meshes, felts and the like. The silencer has good silencing effect on high-frequency and medium-frequency noise, and the low-frequency silencing performance is poor. In addition, the sound absorption material is easy to melt by high-temperature waste gas discharged by an engine, so that the service life is short, and the sound absorption material is easy to be blocked by carbon deposit, oil sludge and the like to reduce or lose the silencing effect, and the anti-type silencer reflects sound waves of certain frequencies transmitted along the pipeline back to the direction of a sound source at an abrupt change position by means of abrupt expansion (or contraction) of the section of the pipeline or a bypass resonant cavity, so that the silencing purpose is achieved. It is suitable for eliminating low and medium frequency noise, and has poor silencing effect on high frequency noise.
At present, only with hindering formula muffler or anti formula muffler on roots's blower, can not compromise the amortization work of high frequency noise and low frequency noise, the noise always appears, causes the pollution to the environment.
SUMMERY OF THE UTILITY MODEL
To exist not enough among the prior art, the utility model provides an impedance muffler for on roots's blower, it has solved roots's blower and can only use resistance formula muffler or anti formula muffler to carry out the amortization, and one of the two either can only eliminate low intermediate frequency's noise, or can only eliminate high intermediate frequency's noise, can't compromise elimination high frequency noise and low frequency noise, and the noise cancelling effect is perfect inadequately.
According to the utility model discloses an impedance muffler for on roots blower, including outer barrel, resistance section and resistance section, resistance section with the resistance section sets up the urceolus is internal, resistance section and roots blower's exit linkage, outer barrel includes up end and lower terminal surface, be equipped with the shrouding on the up end, go up the first choke of shrouding intercommunication, be equipped with down the shrouding on the lower terminal surface, shrouding intercommunication second choke down, first choke with the resistance section is kept away from the one end of resistance section is neighbouring, the second choke with the resistance section is kept away from the one end of resistance section is neighbouring, be equipped with first ring flange on the first choke, be equipped with the second ring flange on the second choke.
Further, the resistance section is including being in respectively outer barrel left side and right side first mesh pipe and second mesh pipe, the axial of first mesh pipe and second mesh pipe with the axial direction of outer barrel is parallel, be equipped with a plurality of apertures on the mesh pipe.
Furthermore, the resistance section comprises a silencing core, and a circulation cavity is arranged in the middle of the silencing core.
Further, the first mesh pipe is communicated with the first throat pipe, the axis of the first mesh pipe is consistent with that of the first throat pipe, the circulation cavity is communicated with the second throat pipe, and the axis of the circulation cavity is consistent with that of the second throat pipe.
Furthermore, an upper partition plate and a lower partition plate are arranged between the resistance section and the resistance section, the upper partition plate is adjacent to the resistance section, the lower partition plate is adjacent to the resistance section, the upper partition plate is provided with a first through hole, the first through hole is coaxial with the second mesh pipe, and the middle part of the lower partition plate is provided with a second through hole coaxial with the circulation cavity.
Further, the inner diameter of the first mesh pipe and the second mesh pipe is 76mm, the length of the outer cylinder body is 1425mm, the distance between the upper sealing plate and the upper partition plate is 500mm, the distance between the upper partition plate and the lower partition plate is 125cm, the distance between the lower partition plate and the lower sealing plate is 800mm, the upper partition plate is provided with a third through hole and a fourth through hole, the third through hole is positioned in the center of the upper partition plate, a channel is arranged between the first mesh pipe and the second mesh pipe, the third through hole is coaxial with the channel, the diameter of the third through hole is 34mm, the diameter of the channel is 66mm, the diameter of the fourth through hole is 60mm, the total length of the first throat pipe and the first flange plate is 100mm, the total length of the second throat pipe and the second flange plate is 100mm, and the inner diameter of the first throat pipe and the second throat pipe is 102mm, the diameter of circulation chamber is 109mm, the diameter of first through-hole is 77mm, the diameter of second through-hole is 109mm, the diameter of amortization core is 284 cm.
Further, the inner diameters of the first mesh pipe and the second mesh pipe are 76mm, the length of the outer cylinder body is 1100mm, the distance between the upper sealing plate and the upper partition plate is 375mm, the distance between the upper partition plate and the lower partition plate is 125cm, the distance between the lower partition plate and the lower sealing plate is 600mm, a channel is arranged between the first mesh pipe and the second mesh pipe, the diameter of the channel is 34mm, the total length of the first throat pipe and the first flange plate is 80mm, the total length of the second throat pipe and the second flange plate is 80mm, the inner diameters of the first throat pipe and the second throat pipe are 70mm, the diameter of the circulation cavity is 77mm, the diameter of the first through hole is 77mm, the diameter of the second through hole is 77mm, and the diameter of the silencing core is 213 cm.
Further, the inner diameter of the first mesh pipe and the second mesh pipe is 76mm, the length of the outer cylinder body is 1425mm, the distance between the upper sealing plate and the upper partition plate is 500mm, the distance between the upper partition plate and the lower partition plate is 125cm, the distance between the lower partition plate and the lower sealing plate is 800mm, the upper partition plate is provided with a third through hole and a fourth through hole, the third through hole is positioned in the center of the upper partition plate, a channel is arranged between the first mesh pipe and the second mesh pipe, the third through hole is coaxial with the channel, the diameter of the third through hole is 34mm, the diameter of the channel is 66mm, the diameter of the fourth through hole is 60mm, the total length of the first throat pipe and the first flange plate is 100mm, the total length of the second throat pipe and the second flange plate is 100mm, and the inner diameter of the first throat pipe and the second throat pipe is 83mm, the diameter of circulation chamber is 90mm, the diameter of first through-hole is 77mm, the diameter of second through-hole is 90mm, the diameter of amortization core is 284 cm.
The utility model discloses following beneficial effect has:
the utility model discloses mainly include outer barrel, hinder formula section and resistance section, the air current is at first through hindering the formula section and eliminating well, high frequency noise, and the buffer structure (first mesh pipe and second mesh pipe promptly) that the back warp circulation chamber entered into the resistance section eliminates low, intermediate frequency noise, turns into the sound energy into heat energy, has eliminated the noise of low, well, high frequency, and noise cancelling effect is more ideal, avoids environmental pollution.
Drawings
Fig. 1 is a sectional view of embodiment 1 of the present invention;
fig. 2 is a top view of an upper sealing plate according to embodiment 1 of the present invention;
FIG. 3 is a plan view of an upper partition plate according to embodiment 1 of the present invention;
FIG. 4 is a plan view of a lower separator according to embodiment 1 of the present invention;
fig. 5 is a top view of the lower sealing plate according to embodiment 1 of the present invention;
fig. 6 is a cross-sectional view of embodiment 2 of the present invention;
fig. 7 is a top view of the upper sealing plate according to embodiment 2 of the present invention;
fig. 8 is a plan view of an upper separator according to embodiment 2 of the present invention;
fig. 9 is a plan view of a lower separator according to embodiment 2 of the present invention;
fig. 10 is a top view of the lower sealing plate according to embodiment 2 of the present invention;
fig. 11 is a sectional view of embodiment 3 of the present invention;
fig. 12 is a top view of the upper sealing plate according to embodiment 3 of the present invention;
fig. 13 is a plan view of an upper separator according to embodiment 3 of the present invention.
In the above drawings: 1. an outer cylinder; 2. an upper sealing plate; 3. a first throat; 4. a lower sealing plate; 5. a second throat; 6. a first flange plate; 7. a second flange plate; 8. a sound deadening core; 81. a flow-through chamber; 9. a first mesh tube; 10. a second mesh tube; 11. an upper partition plate; 12. a lower partition plate; 11a, a first through hole; 12a, a second through hole; 11b, a third through hole; 11c, a fourth through hole; 13. a channel.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings 1-13 and the embodiments.
Example 1:
as shown in fig. 1-5, the utility model discloses an outer barrel 1, hinder formula section and resistance section setting in outer barrel 1, it is on same axis with the resistance section to hinder formula section, hinder formula section and roots blower's exit linkage, outer barrel 1 includes up end and lower terminal surface, be equipped with shrouding 2 on the up end, go up shrouding 2 intercommunication first choke 3, be equipped with down shrouding 4 on the lower terminal surface, shrouding 4 intercommunication second choke 5 down, the one end that the formula section was kept away from with the resistance section is close to first choke 3, the one end that the resistance section was kept away from with the formula section is close to second choke 5, be equipped with first ring flange 6 on the first choke 3, be equipped with second ring flange 7 on the second choke 5.
The resistance section comprises a silencing core 8, and the middle part of the silencing core 8 is provided with a circulation cavity 81. The resistance section comprises a first mesh pipe 9 and a second mesh pipe 10 which are respectively positioned on the left side and the right side of the outer barrel 1, the axial directions of the first mesh pipe 9 and the second mesh pipe 10 are parallel to the axial direction of the outer barrel 1, and a plurality of small holes are formed in the mesh pipes.
The first mesh pipe 9 is communicated with the first throat pipe 3, the axis of the first mesh pipe 9 is consistent with that of the first throat pipe 3, the circulation cavity 81 is communicated with the second throat pipe 5, and the axis of the circulation cavity 81 is consistent with that of the second throat pipe 5.
An upper partition plate 11 and a lower partition plate 12 are arranged between the resistance section and the resistance section, the upper partition plate 11 is adjacent to the resistance section, the lower partition plate 12 is adjacent to the resistance section, the upper partition plate 11 is provided with a first through hole 11a, the first through hole 11a is coaxial with the second mesh pipe 10, and the fourth through hole is provided with a second through hole 12a coaxial with the circulation cavity 81 in the middle of the lower partition plate 12.
The inner diameters of the first mesh pipe 9 and the second mesh pipe 10 are 76mm, the length of the outer cylinder 1 is 1425mm, the distance between the upper sealing plate 2 and the upper partition plate 11 is 500mm, the distance between the upper partition plate 11 and the lower partition plate 12 is 125cm, the distance between the lower partition plate 12 and the lower sealing plate 4 is 800mm, the upper partition plate 11 is provided with a third through hole 11b and a fourth through hole 11c, the third through hole 11b is positioned at the center of the upper partition plate 11, the fourth through hole 11c is positioned at the front side of the upper partition plate 11, the circle center of the third through hole 11b and the circle center of the fourth through hole 11c form a ninety degree central angle on the upper partition plate 11, a channel 13 is arranged between the first mesh pipe 9 and the second mesh pipe 10, the third through hole 11b is coaxial with the channel 13, the diameter of the third through hole 11b is 34mm, the diameter of the channel 13 is 66mm, the diameter of the fourth through hole 11c is 60mm, and the total length of the first throat pipe 3 and the first flange plate 6 is 100mm, the total length of the second throat pipe 5 and the second flange 7 is 100mm, the inner diameters of the first throat pipe 3 and the second throat pipe 5 are 102mm, the diameter of the circulation cavity 81 is 109mm, the diameter of the first through hole 11a is 77mm, the diameter of the second through hole 12a is 109mm, and the diameter of the sound attenuation core 8 is 284 cm.
The working principle of the embodiment is as follows: the airflow enters from the second throat pipe 5, is absorbed by the silencing core 8, is released to the circulation cavity 81, then flows out through the second through hole 12a, is divided into three airflows, respectively enters the second mesh pipe 10 from the first through hole 11a, the third through hole 11b and the fourth through hole 11c, then enters the channel 13 from the right side of the second mesh pipe 10, flows to the left side in the channel 13, enters the first mesh pipe 9 from the left side, finally flows out from the first throat pipe 3, and is dispersed through the small holes in the first mesh pipe 9 and the second mesh pipe 10, the airflow distribution is diffused, the flow speed is reduced, the aerodynamic noise is effectively reduced enough, and the low and medium frequency noise can be eliminated in the period.
Example 2:
as shown in fig. 6 to 10, unlike embodiment 1, the inner diameter of the first mesh tube 9 and the second mesh tube 10 is 76mm, the length of the outer cylinder 1 is 1100mm, the distance between the upper closure plate 2 and the upper partition plate 11 is 375mm, the distance between the upper partition plate 11 and the lower partition plate 12 is 125cm, the distance between the lower partition plate 12 and the lower closure plate 4 is 600mm, a passage 13 is provided between the first mesh tube 9 and the second mesh tube 10, the diameter of the passage 13 is 34mm, the total length of the first throat tube 3 and the first flange 6 is 80mm, the total length of the second throat tube 5 and the second flange 7 is 80mm, the inner diameter of the first throat tube 3 and the second throat tube 5 is 70mm, the diameter of the flow-through cavity 81 is 77mm, the diameter of the first through hole 11a is 77mm, the diameter of the second through hole 12a is 77mm, and the diameter of the core 8 is 213 cm.
The working principle of the embodiment is as follows: the airflow enters from the second throat pipe 5, is absorbed by the silencing core 8 and releases to the circulation cavity 81, then flows out through the second through hole 12a, enters into the second mesh pipe 10 from the first through hole 11a, enters into the channel 13 from the right side of the second mesh pipe 10, flows to the left side in the channel 13, enters into the first mesh pipe 9 from the left side, finally flows out from the first throat pipe 3, and disperses through the small holes on the first mesh pipe 9 and the second mesh pipe 10, so that the airflow distribution is diffused, the flow speed is reduced, the aerodynamic noise is effectively reduced, and the low and medium frequency noise can be eliminated in the process.
Example 3:
as shown in fig. 11 to 13, different from the embodiments 1 and 2 are: the inner diameters of the first mesh pipe 9 and the second mesh pipe 10 are 76mm, the length of the outer cylinder 1 is 1425mm, the distance between the upper sealing plate 2 and the upper partition plate 11 is 500mm, the distance between the upper partition plate 11 and the lower partition plate 12 is 125cm, the distance between the lower partition plate 12 and the lower sealing plate 4 is 800mm, the upper partition plate 11 is provided with a third through hole 11b and a fourth through hole 11c, the third through hole 11b is positioned at the center of the upper partition plate 11, the fourth through hole 11c is positioned at the front side of the upper partition plate 11, the circle center of the third through hole 11b and the circle center of the fourth through hole 11c form a ninety degree central angle on the upper partition plate 11, a channel 13 is arranged between the first mesh pipe 9 and the second mesh pipe 10, the third through hole 11b is coaxial with the channel 13, the diameter of the third through hole 11b is 34mm, the diameter of the channel 13 is 66mm, the diameter of the fourth through hole 11c is 60mm, and the total length of the first throat pipe 3 and the first flange plate 6 is 100mm, the total length of the second throat pipe 5 and the second flange 7 is 100mm, the inner diameters of the first throat pipe 3 and the second throat pipe 5 are 83mm, the diameter of the circulation cavity 81 is 90mm, the diameter of the first through hole 11a is 77mm, the diameter of the second through hole 12a is 90mm, and the diameter of the sound attenuation core 8 is 284 cm.
The working principle of the embodiment is as follows: the airflow enters from the second throat pipe 5, is absorbed by the silencing core 8, is released to the circulation cavity 81, then flows out through the second through hole 12a, is divided into three airflows, respectively enters the second mesh pipe 10 from the first through hole 11a, the third through hole 11b and the fourth through hole 11c, then enters the channel 13 from the right side of the second mesh pipe 10, flows to the left side in the channel 13, enters the first mesh pipe 9 from the left side, finally flows out from the first throat pipe 3, and is dispersed through the small holes in the first mesh pipe 9 and the second mesh pipe 10, the airflow distribution is diffused, the flow speed is reduced, the aerodynamic noise is effectively reduced enough, and the low and medium frequency noise can be eliminated in the period.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (8)
1. The impedance silencer used on the Roots blower is characterized by comprising an outer cylinder body (1), a resistance type section and a resistance section, the resistance section and the resistance section are arranged in the outer cylinder body (1), the resistance section is connected with the outlet of the Roots blower, the outer cylinder body (1) comprises an upper end surface and a lower end surface, an upper sealing plate (2) is arranged on the upper end surface, the upper sealing plate (2) is communicated with the first throat pipe (3), the lower end surface is provided with a lower sealing plate (4), the lower closing plate (4) is communicated with a second throat pipe (5), the first throat pipe (3) is adjacent to one end of the resistant section far away from the resistance section, the second throat (5) is adjacent to the end of the resistive segment remote from the resistive segment, the first throat pipe (3) is provided with a first flange plate (6), and the second throat pipe (5) is provided with a second flange plate (7).
2. The resistant muffler for roots blower as set forth in claim 1, wherein the resistant section comprises a first mesh tube (9) and a second mesh tube (10) at left and right sides of the outer cylinder (1), respectively, the first mesh tube (9) and the second mesh tube (10) having their axial directions parallel to the axial direction of the outer cylinder (1), the mesh tubes being provided with a plurality of small holes.
3. The resistive muffler for a roots blower according to claim 2, wherein the resistive section includes a sound attenuating core (8), and the sound attenuating core (8) has a flow chamber (81) in the middle.
4. The impedance silencer for roots blower according to claim 3, wherein the first mesh pipe (9) is communicated with the first throat (3), and the first mesh pipe (9) is in line with the axis of the first throat (3), the flow cavity (81) is communicated with the second throat (5), and the flow cavity (81) is in line with the axis of the second throat (5).
5. The impedance silencer for roots blower according to claim 4, wherein an upper baffle (11) and a lower baffle (12) are provided between the resistive section and the resistive section, the upper baffle (11) is adjacent to the resistive section, the lower baffle (12) is adjacent to the resistive section, the upper baffle (11) is provided with a first through hole (11a), the first through hole (11a) is coaxial with the second mesh pipe (10), and the middle of the lower baffle (12) is provided with a second through hole (12a) coaxial with the flow cavity (81).
6. The resistive muffler for a roots blower, as set forth in claim 5, wherein: the inner diameters of the first mesh pipe (9) and the second mesh pipe (10) are 76mm, the length of the outer cylinder body (1) is 1425mm, the distance between the upper sealing plate (2) and the upper partition plate (11) is 500mm, the distance between the upper partition plate (11) and the lower partition plate (12) is 125cm, the distance between the lower partition plate (12) and the lower sealing plate (4) is 800mm, the upper partition plate (11) is provided with a third through hole (11b) and a fourth through hole (11c), the third through hole (11b) is located in the center of the upper partition plate (11), a channel (13) is arranged between the first mesh pipe (9) and the second mesh pipe (10), the third through hole (11b) is coaxial with the channel (13), the diameter of the third through hole (11b) is 34mm, the diameter of the channel (13) is 66mm, and the diameter of the fourth through hole (11c) is 60mm, the total length of the first throat pipe (3) and the first flange plate (6) is 100mm, the total length of the second throat pipe (5) and the second flange plate (7) is 100mm, the inner diameters of the first throat pipe (3) and the second throat pipe (5) are 102mm, the diameter of the circulation cavity (81) is 109mm, the diameter of the first through hole (11a) is 77mm, the diameter of the second through hole (12a) is 109mm, and the diameter of the silencing core (8) is 284 cm.
7. The resistive muffler for a roots blower, as set forth in claim 5, wherein: the inner diameters of the first mesh pipe (9) and the second mesh pipe (10) are 76mm, the length of the outer cylinder body (1) is 1100mm, the distance between the upper sealing plate (2) and the upper partition plate (11) is 375mm, the distance between the upper partition plate (11) and the lower partition plate (12) is 125cm, the distance between the lower partition plate (12) and the lower sealing plate (4) is 600mm, a channel (13) is arranged between the first mesh pipe (9) and the second mesh pipe (10), the diameter of the channel (13) is 34mm, the total length of the first throat pipe (3) and the first flange plate (6) is 80mm, the total length of the second throat pipe (5) and the second flange plate (7) is 80mm, the inner diameters of the first throat pipe (3) and the second throat pipe (5) are 70mm, and the diameter of the circulation cavity (81) is 77mm, the diameter of the first through hole (11a) is 77mm, the diameter of the second through hole (12a) is 77mm, and the diameter of the sound attenuation core (8) is 213 cm.
8. The resistive muffler for a roots blower, as set forth in claim 5, wherein: the inner diameters of the first mesh pipe (9) and the second mesh pipe (10) are 76mm, the length of the outer cylinder body (1) is 1425mm, the distance between the upper sealing plate (2) and the upper partition plate (11) is 500mm, the distance between the upper partition plate (11) and the lower partition plate (12) is 125cm, the distance between the lower partition plate (12) and the lower sealing plate (4) is 800mm, the upper partition plate (11) is provided with a third through hole (11b) and a fourth through hole (11c), the third through hole (11b) is located in the center of the upper partition plate (11), a channel (13) is arranged between the first mesh pipe (9) and the second mesh pipe (10), the third through hole (11b) is coaxial with the channel (13), the diameter of the third through hole (11b) is 34mm, the diameter of the channel (13) is 66mm, and the diameter of the fourth through hole (11c) is 60mm, the total length of the first throat pipe (3) and the first flange plate (6) is 100mm, the total length of the second throat pipe (5) and the second flange plate (7) is 100mm, the inner diameters of the first throat pipe (3) and the second throat pipe (5) are 83mm, the diameter of the circulation cavity (81) is 90mm, the diameter of the first through hole (11a) is 77mm, the diameter of the second through hole (12a) is 90mm, and the diameter of the noise reduction core (8) is 284 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023021714.0U CN214118480U (en) | 2020-12-15 | 2020-12-15 | Impedance silencer for roots blower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023021714.0U CN214118480U (en) | 2020-12-15 | 2020-12-15 | Impedance silencer for roots blower |
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| CN214118480U true CN214118480U (en) | 2021-09-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115875134A (en) * | 2022-11-29 | 2023-03-31 | 哈尔滨理工大学 | Gas turbine bleed air mixing nozzle and noise elimination method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115875134A (en) * | 2022-11-29 | 2023-03-31 | 哈尔滨理工大学 | Gas turbine bleed air mixing nozzle and noise elimination method |
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