CN215931073U

CN215931073U - Device for testing acoustic performance of low-frequency linear array by air

Info

Publication number: CN215931073U
Application number: CN202122306220.5U
Authority: CN
Inventors: 俞明强; 孟洪珠
Original assignee: Suzhou Zhuwei Electronic Technology Co ltd
Current assignee: Suzhou Zhuwei Electronic Technology Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-03-01
Anticipated expiration: 2031-09-23

Abstract

The utility model discloses a device for testing acoustic performance of a low-frequency linear array by air, which comprises a detection box, wherein holding rods are fixedly arranged at the upper sides of the left end and the right end of the detection box, a pressure pump is arranged at the lower side of the outer surface of the right end of the detection box, a controller is arranged at the position, located at one side of the pressure pump, of the right end of the detection box, a box cover is movably arranged at one side of the upper end of the detection box, a first sound insulation box is arranged in the middle of the inside of the detection box, a second sound insulation box is arranged in the middle of the inside of the first sound insulation box, outer sound pickups are fixedly arranged on the outer surfaces of the left end and the right end of the second sound insulation box, inner sound pickups are fixedly arranged at the left end and the right end of the inner wall of the second sound insulation box, and a detection main body is arranged in the middle of the inside of the second sound insulation box. The utility model is convenient for increasing the use convenience of the air test device, can improve the use effect of the detection device and has practicability.

Description

Device for testing acoustic performance of low-frequency linear array by air

Technical Field

The utility model relates to the technical field of acoustic testing devices, in particular to a device for testing acoustic performance of a low-frequency linear array through air.

Background

The vertical linear array is widely applied to the radiation noise and low-frequency acoustic scattering characteristic test and matching field positioning of the naval vessels. However, due to the influence of the relative motion of the test platform and the flow velocity of ocean current, the array shape of the vertical linear array can be deformed, and the beam performance and the processing effect of the linear array are seriously influenced. Therefore, the underwater stress of the linear array is analyzed, theoretical simulation is respectively carried out on the conventional cylindrical linear array and the streamline linear array at different flow rates and under different weights, the effective length and the beam performance, the method for carrying out comparison test and analysis on the underwater postures and the background noise of the conventional cylindrical array and the improved streamline linear array can be used for testing the acoustic performance of the linear array with low air detection frequency, and an air detection device is also used for detecting different frequencies of sound during the production and processing of sound. For example, high-frequency high volume, high-frequency low volume, low-frequency high volume and low-frequency low volume, when the stereo set is installed in an array mode, the air detection device can be used for detecting the acoustic performance of the low-frequency linear array of the stereo set, so that when the low-frequency acoustic performance of the air is detected, the sound effect of the stereo set can be judged by adjusting and controlling different volumes and frequencies of the stereo set.

However, the existing acoustic performance testing device has some defects in the using process, the acoustic performance testing device has more structural components, is not high in use convenience and inconvenient for users to use, and is used in an environment which is absolutely forbidden in the using process of the acoustic performance testing device, so that the device is inconvenient to test and use, and the using effect of the acoustic performance testing device is influenced, and therefore the existing acoustic performance testing device is improved.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a device for testing the acoustic performance of a low-frequency linear array by air, which can effectively solve the problems in the background technology.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a device for testing the acoustic performance of a low-frequency linear array by air comprises a detection box, wherein holding rods are fixedly arranged at the upper sides of the left end and the right end of the detection box, a pressure pump is arranged at the lower side of the outer surface of the right end of the detection box, a controller is arranged at one side of the pressure pump at the right end of the detection box, a box cover is movably arranged on one side of the upper end of the detection box, a first sound insulation box is arranged in the middle of the interior of the detection box, a second sound insulation box is arranged in the middle of the inside of the first sound insulation box, outer sound pickups are fixedly arranged on the outer surfaces of the left end and the right end of the second sound insulation box, inner sound pick-up devices are fixedly arranged at the left end and the right end of the inner wall of the second sound-proof box, a detection main body is arranged in the middle of the inner part of the second sound-proof box, the equal fixed mounting in surface of first sound-proof box and second sound-proof box has the megaphone, the lower extreme of detection case all is provided with the gyro wheel all around.

Preferably, the front end surface of detection case is provided with the signal line, the surface cover of holding rod is equipped with the silica gel cover, be provided with pressure pump control unit and pressure measurement appearance in the middle of the inside of controller.

Preferably, the outer surface of one side of case lid is fixed with the rubber frame, the inside and outside surface cover of rubber frame is equipped with the soundproof cotton cover.

Preferably, first sound-proof box comprises toughened glass board and sound-proof pad, the quantity of toughened glass board and sound-proof pad is two sets of, and is a set of sound-proof pad is located the intermediate position of two sets of toughened glass boards, another group sound-proof pad is located the lower extreme surface of outside toughened glass board, first sound-proof box is the same with the structure of second sound-proof box.

Preferably, the quantity of outer adapter and interior adapter is a plurality of groups, a plurality of groups the surface that outer adapter is located the second sound-proof box is the array form and arranges, a plurality of groups the internal surface that interior adapter is located the second sound-proof box is the array form and arranges.

Preferably, the outer surface of one side of the first sound insulation box is fixedly provided with an exhaust pipe, the exhaust pipe is connected with the first sound insulation box in a penetrating manner, and one end of the exhaust pipe is in through connection with the pressure pump.

Preferably, the outer surface of the upper end of the roller is fixedly provided with a rubber pad, the upper end of the rubber pad is fixedly connected with the lower end of the detection box, and the outer surface of one side of the roller is provided with a foot brake plate.

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

1. the detection box, the holding rod, the box cover, the idler wheels, the rubber pads and the foot brake plates are arranged, the detection box is connected with the box cover, so that the outer part of the device is conveniently sealed, the holding rod is convenient for increasing the carrying convenience of the detection box, the idler wheels are convenient for increasing the moving convenience of the detection box, the rubber pads are convenient for increasing the anti-seismic effect between the idler wheels and the detection box, and the foot brake plates are convenient for fixing the use positions of the idler wheels, so that the carrying convenience and the moving convenience of the device are increased, and the use effect of the aeroacoustic performance detection device is improved;

2. through the force pump that sets up, first sound-proof box, the second sound-proof box, the megaphone, the rubber frame, soundproof cotton cover and toughened glass board, the force pump is convenient for carry out vacuum treatment to the intermediate position between the double-deck toughened glass board of first sound-proof box and second sound-proof box through the exhaust tube, rubber frame and soundproof cotton are convenient for carry out sound insulation treatment to the junction of detection case and case lid, the sound-proof structure of detection device surface has been increased, the megaphone is convenient for enlarge the pickup effect of the inside and outside pickup of device, the detection sensitivity of improvement device, thereby increase aeroacoustics performance detection device's practicality.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an apparatus for air testing acoustic performance of a low-frequency linear array according to the present invention;

FIG. 2 is an exploded view of the structure of the case cover of the device for air testing acoustic performance of low frequency linear array according to the present invention;

FIG. 3 is a schematic view of a connection structure of a first sound-proof box and a second sound-proof box in the device for air testing acoustic performance of a low-frequency linear array according to the present invention;

FIG. 4 is a partial structural analysis diagram of a first sound-proof box in the device for testing acoustic performance of low-frequency linear array by air;

fig. 5 is a schematic structural diagram of a roller in the device for air testing acoustic performance of a low-frequency linear array according to the present invention.

In the figure: the device comprises a detection box 1, a holding rod 2, a pressure pump 3, a controller 4, a box cover 5, a first sound insulation box 6, a second sound insulation box 7, an outer sound pickup 8, an inner sound pickup 9, a detection main body 10, a loudspeaker 11, a roller 12, a rubber frame 13, a sound insulation cotton sleeve 14, a toughened glass plate 15, a sound insulation pad 16, an exhaust pipe 17, a rubber pad 18 and a foot brake plate 19.

Detailed Description

The present invention will be further described with reference to the following detailed description so that the technical means and features of the present invention can be easily understood.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation to be constructed and operated in a specific orientation, and thus, cannot be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, the terms "connected" may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

As shown in FIGS. 1-5, an apparatus for air testing acoustic performance of low frequency linear array comprises a detection box 1, a holding rod 2 is fixedly mounted at the upper side of the left and right ends of the detection box 1, a pressure pump 3 is arranged at the lower side of the outer surface of the right end of the detection box 1, a controller 4 is arranged at the right end of the detection box 1 at one side of the pressure pump 3, a box cover 5 is movably mounted at one side of the upper end of the detection box 1, a first sound insulation box 6 is arranged in the middle of the inside of the detection box 1, a second sound insulation box 7 is arranged in the middle of the inside of the first sound insulation box 6, outer sound pickups 8 are fixedly mounted at the outer surfaces of the left and right ends of the second sound insulation box 7, inner sound pickups 9 are fixedly mounted at the left and right ends of the inner wall of the second sound insulation box 7, a detection main body 10 is arranged in the middle of the inside of the second sound insulation box 7, loudspeakers 11 are fixedly mounted at the outer surfaces of the first sound insulation box 6 and the second sound insulation box 7, the lower end of the detection box 1 is provided with rollers 12 all around.

Wherein, the front end surface of detection case 1 is provided with the signal line, and the surface cover of holding rod 2 is equipped with the silica gel cover, is provided with force pump control unit and pressure detector in the middle of the inside of controller 4, uses the 3 pump-out techniques of force pump in the current controller 4, and the 3 control unit of force pump controls the switch of force pump 3.

Wherein, the outer fixed surface of one side of case lid 5 installs rubber frame 13, and the inside and outside surface cover of rubber frame 13 is equipped with soundproof cotton cover 14, through rubber frame 13 and soundproof cotton cover 14 multiplicable case lid 5 and detection case 1 between be connected the seal, improves the syllable-dividing effect of detection case 1.

Wherein, first sound-proof box 6 comprises toughened glass board 15 and sound-proof pad 16, toughened glass board 15 and sound-proof pad 16's quantity are two sets of, a set of sound-proof pad 16 is located two sets of toughened glass board 15's intermediate position, another group sound-proof pad 16 is located outside toughened glass board 15's lower extreme surface, first sound-proof box 6 is the same with the structure of second sound-proof box 7, first sound-proof box 6 and second sound-proof box 7 can give sound insulation to the surface that detects main part 10 and handle, increase the detection data accuracy of device.

Wherein, the quantity of outer adapter 8 and interior adapter 9 is a plurality of groups, and the surface that a plurality of groups of outer adapter 8 are located second sound-proof box 7 is the array form and arranges, and the internal surface that a plurality of groups of interior adapter 9 are located second sound-proof box 7 is the array form and arranges for outer adapter 8 and interior adapter 9 can carry out sound detection to the interior external surface of second sound-proof box 7.

Wherein, one side fixed surface of first sound-proof box 6 installs exhaust tube 17, and exhaust tube 17 is the run-through connection with first sound-proof box 6, and the one end and the force pump 3 through connection of exhaust tube 17, force pump 3 can carry out vacuum treatment to the sound insulating pad 16 layer department in the middle of two sets of toughened glass boards 15 in first sound-proof box 6 and the second sound-proof box 7 through exhaust tube 17.

Wherein, the outer fixed surface in the upper end of gyro wheel 12 installs rubber pad 18, the upper end of rubber pad 18 and the lower extreme fixed connection of detection case 1, and one side surface of gyro wheel 12 is provided with service brake board 19 for the device passes through gyro wheel 12 and to removing it to the position of use, increases the removal convenience of device.

It should be noted that, the utility model is a device for testing acoustic performance of low frequency linear array by air, when in use, the detection box 1 is carried to the use position by holding the outer silica gel sleeve of the holding rod 2 with both hands, or the detection box 1 is moved to the use position by using the roller 12, the position of the roller 12 is fixed by the foot brake plate 19, the damping effect between the roller 12 and the detection box 1 can be increased by using the rubber pad 18 with elastic characteristic of rubber in the moving process, the box cover 5 and the detection box 1 are opened, the detection main body 10 is used by using the existing air testing low frequency linear array detection technology, the connection tightness between the box cover 5 and the detection box 1 is increased by using the rubber frame 13 and the sound insulation cotton sleeve 14, the sound insulation effect of the detection box 1 is improved, the air suction technology of the pressure pump 3 in the existing controller 4 is applied, the pressure pump control unit controls the on and off of the pressure pump 3, the sound insulation pad 16 layer between the two groups of toughened glass plates 15 in the first sound insulation box 6 and the second sound insulation box 7 is subjected to vacuum treatment through the exhaust tube 17, the exterior of the detection main body 10 is subjected to sound insulation treatment by using a vacuum sound insulation technology, the existing sound amplification technology of the loudspeaker 11 is applied in the detection process, the amplifier is used for amplifying the sound receiving sizes of the inner sound pickup 9 and the outer sound pickup 8, then the inner sound pickup 9 and the outer sound pickup 8 carry out sound detection on the inner surface and the outer surface of the second sound insulation box 7 through the sound pickup sound receiving technology, and then the detection data are transmitted to an external detection device through a signal line at the front end of the detection box 1, so that the inspection main body 10 derives the soundproof effect of the inspection box 1 and the external disturbance condition of the low frequency detection of the air, the microphone 11 can improve the sensitivity of the device sound detection, thereby improving the use effect of the aeroacoustic performance detection device.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The device for testing the acoustic performance of the low-frequency linear array by air comprises a detection box (1) and is characterized in that holding rods (2) are fixedly mounted at the upper side positions of the left end and the right end of the detection box (1), a pressure pump (3) is arranged at the lower side position of the outer surface of the right end of the detection box (1), a controller (4) is arranged at one side position of the right end of the detection box (1) which is positioned at the pressure pump (3), a box cover (5) is movably mounted at one side of the upper end of the detection box (1), a first sound insulation box (6) is arranged in the middle of the interior of the detection box (1), a second sound insulation box (7) is arranged in the middle of the interior of the first sound insulation box (6), outer sound pickups (8) are fixedly mounted at the outer surfaces of the left end and the right end of the second sound insulation box (7), inner sound pickups (9) are fixedly mounted at the left end and the right end of the inner wall of the second sound insulation box (7), placed detection subject (10) in the middle of the inside of second sound-proof box (7), the equal fixed mounting in surface of first sound-proof box (6) and second sound-proof box (7) has megaphone (11), the lower extreme of detection case (1) all is provided with gyro wheel (12) all around.

2. The device for air testing acoustic performance of the low-frequency linear array according to claim 1, wherein: the detection box is characterized in that a signal line is arranged on the outer surface of the front end of the detection box (1), a silica gel sleeve is sleeved on the outer surface of the holding rod (2), and a pressure pump control unit and a pressure detector are arranged in the middle of the inside of the controller (4).

3. The device for air testing acoustic performance of the low-frequency linear array according to claim 1, wherein: the outer surface of one side of case lid (5) is fixed and is installed rubber frame (13), the inside and outside surface cover of rubber frame (13) is equipped with soundproof cotton cover (14).

4. The device for air testing acoustic performance of the low-frequency linear array according to claim 1, wherein: first sound-proof box (6) comprises toughened glass board (15) and sound-proof pad (16), the quantity of toughened glass board (15) and sound-proof pad (16) is two sets of, and is a set of sound-proof pad (16) is located the intermediate position of two sets of toughened glass board (15), another group sound-proof pad (16) is located the lower extreme surface of outside toughened glass board (15), the structure of first sound-proof box (6) and second sound-proof box (7) is the same.

5. The device for air testing acoustic performance of the low-frequency linear array according to claim 1, wherein: the quantity of outer adapter (8) and interior adapter (9) is a plurality of groups, a plurality of groups the surface that outer adapter (8) are located second sound-proof box (7) is the array and arranges, a plurality of groups the internal surface that interior adapter (9) are located second sound-proof box (7) is the array and arranges.

6. The device for air testing acoustic performance of the low-frequency linear array according to claim 1, wherein: the outer fixed surface of one side of first sound-proof box (6) installs exhaust tube (17), exhaust tube (17) are run-through connection with first sound-proof box (6), the one end and force pump (3) through connection of exhaust tube (17).

7. The device for air testing acoustic performance of the low-frequency linear array according to claim 1, wherein: the outer fixed surface of the upper end of the roller (12) is provided with a rubber pad (18), the upper end of the rubber pad (18) is fixedly connected with the lower end of the detection box (1), and the outer surface of one side of the roller (12) is provided with a foot brake plate (19).