CN218866713U

CN218866713U - Noise control system for open-air ground test run

Info

Publication number: CN218866713U
Application number: CN202223038112.5U
Authority: CN
Inventors: 屈靖; 张明镜
Original assignee: Sichuan Fangcun Intelligent Environment Technology Co ltd
Current assignee: Sichuan Fangcun Intelligent Environment Technology Co ltd
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-04-14
Anticipated expiration: 2032-11-16

Abstract

The utility model discloses a noise control system for open-air ground test run, which comprises a tail gas tower silencer, a rotary type barrier, a wing external fixed sound-proof barrier and a machine head air inlet movable sound-proof barrier, wherein the tail gas tower silencer and the rotary type barrier are positioned at the tail, the wing external fixed sound-proof barrier is positioned at the two sides of the wing, and the machine head air inlet movable sound-proof barrier is positioned at the two sides of the machine head; the utility model discloses can produce following benefit: the utility model discloses can effectual control jet plane produced noise when open place ground test-car, through systematic fall make an uproar solve the serious influence that huge noise caused peripheral staff and resident.

Description

Open-air formula ground noise control system for taking test

Technical Field

The utility model relates to a noise control device, concretely relates to open-air formula noise control system for ground test run.

Background

The conventional jet plane is positioned in an open field when a ground test run is carried out, huge noise is generated when an engine is started, and serious influence is caused on workers and surrounding residents.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an open-air formula ground noise control system for taking a trial run to can produce huge noise when solving the engine and open, cause the technical problem of serious influence to staff and peripheral resident.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides an open-air ground noise control system for taking a trial run, including tail gas tower muffler, rotary barrier, the outer fixed sound-proof barrier of wing, aircraft nose air inlet movable sound-proof barrier, tail gas tower muffler and rotary barrier are located the tail, the outer fixed sound-proof barrier of wing is located the wing both sides, aircraft nose air inlet movable sound-proof barrier is located the aircraft nose both sides;

optionally or preferably, the tail gas tower-type silencer has a total height of 13m, a shoulder height of 4.8m, a total width of 10m, a front end width of 4m, a trapezoidal structure and a rear end width of 6m, and consists of 4 groups of air outlet silencing pieces, each group consists of 31 silencing pieces with a width of 2.7m and a height of 3m, and the tail gas tower-type silencer consists of three layers, namely a perforated plate layer, a sound absorbing material layer and steel;

alternatively or preferably, the rotating barrier has a total height of 3.6m and a thickness of 500mm; the outermost layer adopts a perforated plate surface material made of high-temperature resistant steel, a sound-absorbing material layer is arranged in the perforated plate surface material, the outermost layer is a steel back plate, and the bottom is a movable pulley;

optionally or preferably, the height of the wing external fixed sound insulation barrier is 3-5m, the thickness is 150-200mm, and the ground base width is 1-1.5m; the wing external fixed sound insulation barrier comprises a steel structure back support and a steel structure diagonal support, wherein the steel structure back support is adaptive to the width of a foundation, the height of the steel structure back support is half of the height of the barrier, and the diagonal support starts from the top end of the steel structure, and the top of the diagonal support is supported above 2/3 of the height of the barrier;

optionally or preferably, the height of the movable sound insulation barrier at the air inlet of the machine head is 2-3m, the thickness of the movable sound insulation barrier is 150-200mm, the ground base width is 1-1.5m, the steel structure back support adapts to the base width, and the height of the movable sound insulation barrier is consistent with the height of the barrier;

based on the technical scheme, the utility model discloses can produce following technological effect:

the utility model discloses can effectual control jet plane produced noise when open place ground test-car, through systematic fall make an uproar solve the serious influence that huge noise caused peripheral staff and resident.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a side view of the present invention;

FIG. 3 is a diagram showing the operation state of the movable sound barrier at the air inlet of the handpiece of the present invention;

FIG. 4 is a view showing the usage state of the external fixed sound barrier of the wing of the present invention;

FIG. 5 is a view of the use of the rotary barrier of the present invention;

in the figure: 1. a tail gas tower muffler; 2. a rotating barrier; 3. a fixed sound insulation barrier outside the wing; 4. aircraft nose air inlet movable sound insulation barrier.

Detailed Description

The utility model provides an open-air formula ground noise control system for taking a trial run, including tail gas tower muffler 1, rotation type protective screen 2, wing external fixation formula sound insulation protective screen 3, aircraft nose air inlet movable sound insulation protective screen 4, tail gas tower muffler 1 and rotation type protective screen 2 are located the tail, wing external fixation formula sound insulation protective screen 3 is located the wing both sides, aircraft nose air inlet movable sound insulation protective screen 4 is located the aircraft nose both sides.

Optionally or preferably, the total height of the tail gas tower-type silencer 1 is 13m, the shoulder height is 4.8m, the total width is 10m, the front end width is 4m, the tail gas tower-type silencer is designed to be a trapezoidal structure, the rear end width is 6m, the tail gas tower-type silencer is composed of 4 groups of air outlet silencing pieces, each group is composed of 31 silencing pieces with the width of 2.7m and the height of 3m, and the inside of the tail gas tower-type silencer 1 is composed of three layers of perforated plate material layers, sound absorption material layers and steel materials.

Alternatively or preferably, the rotating barrier 2 has a total height of 3.6m and a thickness of 500mm; the most surface layer adopts a perforated plate surface material made of high-temperature resistant steel, a sound-absorbing material layer is arranged in the perforated plate surface material, the most surface layer is a steel back plate, and the bottom part is a movable pulley.

Optionally or preferably, the height of the wing external fixed type sound insulation barrier 3 is 3-5m, the thickness is 150-200mm, and the ground base width is 1-1.5m; the fixed sound insulation barrier 3 outside the wing comprises a steel structure back support and steel structure inclined supports, the steel structure back support adapts to the basic width, the height of the steel structure back support is half of the height of the barrier, and the inclined supports start from the top end of the steel structure, and the top of the inclined supports are supported above 2/3 of the height of the barrier.

Optionally or preferably, the height of the machine head air inlet movable sound insulation barrier 4 is 2-3m, the thickness is 150-200mm, the ground foundation width is 1-1.5m, the steel structure back support adapts to the foundation width, and the height is consistent with the barrier height.

The utility model discloses an embodiment is: the core components of the nose air inlet movable sound insulation barrier, the wing outer side fixed sound insulation barrier and the tail nozzle movable sound insulation barrier are sound absorption and insulation barriers. Meanwhile, the side facing the noise source is made of porous perforated material, so that noise can enter the inner side of the sound absorption and insulation barrier and contact with sound absorption materials such as superfine glass fibers in the barrier, sound energy is converted into mechanical energy and is not reflected back to the air, and the absorption of the sound energy is realized. The movable sound insulation barrier with the nose air inlet and the tail nozzle adopts a movable pulley design structure, and the movable barrier is unfolded towards two outer sides when the airplane drives into the airplane position, so that the normal track operation of the airplane is not hindered.

The utility model discloses an embodiment is: the core part of the tail gas tower type silencer at the rear end of the tail nozzle is a sound absorption and insulation silencer, and the silencer has good sound insulation performance (refer to a road sound insulation barrier) due to the adoption of a structure with large thickness and filled with sound absorption materials. Inside wall of whole muffler is porous perforated material, it is inboard to make the noise can get into the sound absorption and insulation barrier, sound absorbing material such as the superfine glass fiber of inside with the barrier contacts, make the acoustic energy turn into mechanical energy, no longer reflect back in the air, thereby realize the absorption of acoustic energy, add the amortization piece at the air outlet, the constitution of amortization piece is perforated panel and sound absorbing material itself, can be under the condition that does not influence gas flow, increase area of contact, can play the effect of sound absorption better, make the great weakening of the noise of discharge muffler.

The utility model discloses an embodiment is: the expanding chamber anti-type structure of muffler anterior segment is through abrupt change department of pipeline cross-section or by-pass resonant cavity etc. arouse the change of impedance and produce reflection, the interference of acoustic energy in the sound propagation process to reduce by the outside radiating acoustic energy of muffler, in order to reach the noise elimination purpose, the size of muffler mainly designs according to the gas flow that the tail flame produced, can satisfy the gas flow that the aircraft tail flame jetted and can discharge smoothly, can not cause phenomenons such as recoil to cause the influence to the examination machine.

The utility model discloses an embodiment is: the whole system adopts a good steel structure organization structure, provides a better fixing effect for the silencer and the sound insulation barrier, and prevents the silencer from displacing and causing accidents in the open area of an airport with large wind power.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The noise control system for the open-air ground test run is characterized by comprising a tail gas tower type silencer (1), a rotary type barrier (2), a wing external fixed type sound insulation barrier (3) and a nose air inlet movable type sound insulation barrier (4), wherein the tail gas tower type silencer (1) and the rotary type barrier (2) are located at the tail, the wing external fixed type sound insulation barrier (3) is located on two sides of the wing, and the nose air inlet movable type sound insulation barrier (4) is located on two sides of the nose.

2. The noise control system for open-air ground test run according to claim 1, wherein the tail gas tower muffler (1) has a total height of 13m, a shoulder height of 4.8m, a total width of 10m, a front width of 4m, a trapezoidal structure, and a rear width of 6m, and comprises 4 sets of air-out muffling sheets, each set comprises 31 muffling sheets with a width of 2.7m and a height of 3m, and the interior of the tail gas tower muffler (1) comprises three layers of perforated plate material layer, sound-absorbing material layer, and steel material.

3. Noise control system for open-air floor test runs according to claim 1, characterized in that the rotary barrier (2) has a total height of 3.6m and a thickness of 500mm; the most surface layer adopts a perforated plate surface material made of high-temperature resistant steel, a sound absorbing material layer is arranged in the perforated plate surface material, the most surface layer is a steel back plate, and the bottom part is a movable pulley.

4. The open-air ground test run noise control system according to claim 1, wherein the fixed sound barrier outside the wing (3) has a height of 3-5m, a thickness of 150-200mm, and a ground base width of 1-1.5m; the wing external fixed sound insulation barrier (3) comprises a steel structure back support and steel structure inclined supports, the steel structure back support adapts to the width of a foundation, the height of the steel structure back support is half of the height of the barrier, and the inclined supports start from the top end of the steel structure, and the top of the inclined supports are supported above 2/3 of the height of the barrier.

5. The noise control system for open-air ground test runs of claim 1, wherein the height of the nose air inlet movable sound insulation barrier (4) is 2-3m, the thickness is 150-200mm, the ground base width is 1-1.5m, the steel structure back support adapts to the base width, and the height is consistent with the barrier height.