CN212624793U - Double-layer pipeline point sound source sounding device - Google Patents
Double-layer pipeline point sound source sounding device Download PDFInfo
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- CN212624793U CN212624793U CN202021029877.0U CN202021029877U CN212624793U CN 212624793 U CN212624793 U CN 212624793U CN 202021029877 U CN202021029877 U CN 202021029877U CN 212624793 U CN212624793 U CN 212624793U
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- 230000000694 effects Effects 0.000 claims abstract description 3
- 238000009413 insulation Methods 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 6
- 238000002955 isolation Methods 0.000 claims description 3
- 230000030279 gene silencing Effects 0.000 abstract description 17
- 238000000926 separation method Methods 0.000 abstract description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
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Abstract
A double-pipe point sound source sound generating device, comprising: amortization casing and set up sound source and the toper sound-absorbing pipe that links to each other with it in its inside, wherein: the output end of the conical sound receiving tube is provided with a sound wave guide tube positioned outside the silencing shell, and the sound source is not contacted with the inner wall of the silencing shell. The sound source comprises a loudspeaker and a silencing box arranged outside the loudspeaker, and a shell of the silencing box is hermetically connected with the periphery of the conical sound-receiving tube so that the sound source which is scattered forwards is gathered at one point. This device is based on pipeline acoustics principle, and the sound wave passes through physics separation and pipeline direction, lets it reach directional effect as required.
Description
Technical Field
The utility model relates to a technique in acoustic test field, concretely relates to double-deck pipeline point sound source sound generating mechanism.
Background
When a common loudspeaker is used as a calibration sound source, the occurrence area is too large, which is not beneficial to the detection and calibration of a sound source positioning system.
SUMMERY OF THE UTILITY MODEL
The utility model discloses it is not enough to the above-mentioned that prior art exists, provides a double-deck pipeline point sound source sound generating mechanism, based on pipeline acoustics principle, the sound wave passes through physics separation and pipeline direction, lets it reach the effect of approximate point sound source in the waveguide exit.
The utility model discloses a realize through following technical scheme:
the utility model discloses a: amortization casing and set up sound source and the toper sound-absorbing pipe that links to each other with it in its inside, wherein: the output end of the conical sound receiving tube is provided with a sound wave guide tube positioned outside the silencing shell, and the sound source is not contacted with the inner wall of the silencing shell.
The sound source comprises a loudspeaker and a silencing box arranged outside the loudspeaker, and a shell of the silencing box is hermetically connected with the periphery of the conical sound-receiving tube, so that the sound source which is scattered forwards is gathered at one point.
The sound attenuation shell comprises: the sound insulation barrel is used for secondarily isolating sound waves leaked from the sound source after primary isolation, and the top plate is hermetically connected with the sound insulation barrel.
The outside acoustic duct be equipped with give sound insulation pipe in order to carry out the secondary to the sound wave of revealing and keep apart, this give sound insulation pipe is connected with the sound insulation union coupling of fixed setting on amortization casing with interference fit's mode.
The sound insulation pipe joint is preferably connected with the sound attenuation shell in a threaded sealing mode.
The gap between the sound wave guide tube and the sound insulation tube is provided with a sealing plug to prevent sound waves from penetrating out of the gap.
Drawings
FIG. 1 is an exploded view of the apparatus;
FIG. 2 is a schematic cross-sectional view of the present apparatus;
in the figure: 1 silencing box, 2 silencing box gaskets, 3 loudspeakers, 4 loudspeaker gaskets, 5 conical sound-absorbing pipes, 6 sound wave guide pipe joints, 7 sound-absorbing barrels, 8 top plates, 9 sound-absorbing pipe joints, 10 sound wave guide pipes, 11 sound-absorbing pipes and 12 sealing plugs.
Detailed Description
As shown in fig. 1, the present embodiment relates to a double-layer pipeline point sound source sounding device, which includes: amortization casing and set up sound source and the toper sound-absorbing pipe that links to each other with it in its inside, wherein: the output end of the conical sound receiving tube is provided with a sound wave guide tube positioned outside the silencing shell, and the sound source is not contacted with the inner wall of the silencing shell.
As shown in fig. 1 and 2, the sound-deadening housing includes: the sound insulation barrel 7 and the top plate 8, wherein the top plate 8 and the sound insulation barrel 7 are sealed by gluing.
The sound source comprises: the silencer comprises a silencing box 1 and a loudspeaker 3 arranged in the silencing box, and a silencing box gasket 2 and a loudspeaker gasket 4 are clamped between the silencing box 1 and the loudspeaker to ensure the tightness of the silencing box and the conical sound-receiving tube.
The acoustic waveguide 10 and the conical sound absorbing tube 5 are connected by means of an acoustic waveguide joint 6.
The sound insulation pipe 11 and the sound insulation barrel top plate 8 are connected and sealed by a sound insulation pipe joint 9.
The sound guide tube 6 passes through the sound insulation tube 11, and the sound wave leaked between the sound guide tube and the sound insulation tube is sealed by a sealing plug 12.
The foregoing embodiments may be modified in various ways by those skilled in the art without departing from the spirit and scope of the present invention, which is not limited by the above embodiments but is to be accorded the full scope defined by the appended claims, and all such modifications and variations are within the scope of the invention.
Claims (6)
1. The utility model provides a double-deck pipeline point sound source sound generating mechanism which characterized in that includes: amortization casing and set up sound source and the toper sound-absorbing pipe that links to each other with it in its inside, wherein: the output end of the conical sound receiving tube is provided with a sound wave guide tube positioned outside the effect shell, and the sound source is not contacted with the inner wall of the sound attenuation shell.
2. The double-pipe point sound source generating device of claim 1, wherein the sound source comprises a speaker and a sound-deadening box disposed outside the speaker, and a housing of the sound-deadening box is hermetically connected to an outer circumference of the cone-shaped sound-receiving tube so that the sound source emitted forward converges at one point.
3. The double-pipe point sound source generating device according to claim 1, wherein the muffling housing comprises: the sound insulation barrel is used for secondarily isolating sound waves leaked from the sound source after primary isolation, and the top plate is hermetically connected with the sound insulation barrel.
4. The double-layer pipeline point sound source sounding device as claimed in claim 1, wherein a sound-proof pipe is disposed outside the sound guide pipe to perform secondary isolation of the leaked sound waves, and the sound-proof pipe is connected to a sound-proof pipe joint fixedly disposed on the sound-proof housing in an interference fit manner.
5. The double-layer pipeline point sound source sounding device of claim 4, wherein the sound-insulating pipe joint is in threaded sealing connection with the sound-deadening shell.
6. The double-walled pipe dot sound source generating device according to claim 1, wherein a sealing plug is provided in a gap between the sound guide tube and the sound insulating tube to prevent sound waves from passing through the gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021029877.0U CN212624793U (en) | 2020-06-08 | 2020-06-08 | Double-layer pipeline point sound source sounding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021029877.0U CN212624793U (en) | 2020-06-08 | 2020-06-08 | Double-layer pipeline point sound source sounding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212624793U true CN212624793U (en) | 2021-02-26 |
Family
ID=74714009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021029877.0U Active CN212624793U (en) | 2020-06-08 | 2020-06-08 | Double-layer pipeline point sound source sounding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212624793U (en) |
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2020
- 2020-06-08 CN CN202021029877.0U patent/CN212624793U/en active Active
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