CN206921470U - A kind of regulable center frequency silencing apparatus - Google Patents
A kind of regulable center frequency silencing apparatus Download PDFInfo
- Publication number
- CN206921470U CN206921470U CN201720838949.8U CN201720838949U CN206921470U CN 206921470 U CN206921470 U CN 206921470U CN 201720838949 U CN201720838949 U CN 201720838949U CN 206921470 U CN206921470 U CN 206921470U
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- China
- Prior art keywords
- leading screw
- end cap
- fixing end
- silencing apparatus
- screw
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Testing Of Engines (AREA)
Abstract
It the utility model is related to a kind of regulable center frequency silencing apparatus, by collateral branch's hush tube main body, sealing surface, screw mandrel, screw mandrel fixing end cap and the part of fixing nut five composition, fixing nut quantity is two, sealing surface is connected by screw thread with leading screw, leading screw passes through leading screw fixing end cap via, leading screw and leading screw fixing end cap are fixed using former and later two fixing nuts, collateral branch's hush tube main body is connected through a screw thread with leading screw fixing end cap, leading screw fixing end cap horizontally slips on leading screw, advantage is that this device can adjust silencing apparatus size, and then change the frequency characteristic that gas handling system is eliminated the noise, the debugging stage is designed in gas handling system, save exemplar Production Time, improve operating efficiency.
Description
Technical field
Noise elimination technique field is the utility model is related to, specifically a kind of regulable center frequency silencing apparatus.
Background technology
In recent years, CAE technologies play the part of more and more important role automobile development is overweight, but properties of product finally need to try
Checking.Therefore in product design verification process, the performance adjustment of product is only the key for determining properties of product.How to improve
The operating efficiency of production debugging, it is the key of compression time cost.
Utility model content
, it is necessary to using different silencing apparatus in gas handling system debugging process, one of which collateral branch silencing apparatus, one end is opened
The closing of mouthful one end, when sound wave enters this collateral branch pipe by main pipeline, reflected through rigid face, when sound wave reaches main pipeline can with it is identical
The opposite sound wave of frequency plot is offset, and reaches noise elimination purpose, and the axial direction of wherein quarter-wave odd-multiple and silencing apparatus is long
Equal sound wave is spent, it is maximum to transmit loss.Generally debugging exemplar is the exemplar of the fixed dimension prepared in advance, and the utility model carries
For a kind of silencing apparatus of size adjustable, for testing, by changing silencing apparatus axial length, there is provided the noise elimination of different frequency
Device.
The technical solution adopted in the utility model is：A kind of regulable center frequency silencing apparatus, including silencing apparatus body,
It is characterized in that：Silencing apparatus is by collateral branch's hush tube main body, sealing surface, screw mandrel, screw mandrel fixing end cap and fixing nut five
Be grouped into, fixing nut quantity is two, and sealing surface is connected by screw thread with leading screw, leading screw by leading screw fixing end cap via,
Leading screw and leading screw fixing end cap are fixed using former and later two fixing nuts, collateral branch's hush tube main body passes through with leading screw fixing end cap
Threaded connection, leading screw fixing end cap horizontally slip on leading screw.
The beneficial effect of this patent is repeatedly can quickly to adjust frequency of noise elimination, and makes multiple this according to frequency range and disappear
Acoustic device, and reuse, resource is saved, improves efficiency, this device can adjust silencing apparatus size, and then change air inlet system
The frequency characteristic that system is eliminated the noise, the debugging stage is designed in gas handling system, saves exemplar Production Time, improves operating efficiency.
Brief description of the drawings
Fig. 1 is the utility model overall structure diagram；
Attached body mark is as follows：1st, collateral branch's hush tube main body 2, sealing surface 3, screw mandrel 4, screw mandrel fixing end cap
5th, fixing nut.
Embodiment
Such as Fig. 1, the scheme that the utility model uses is：A kind of regulable center frequency silencing apparatus, including silencing apparatus sheet
Body, wherein：Silencing apparatus is by collateral branch's hush tube main body 1, sealing surface 2, screw mandrel 3, screw mandrel fixing end cap 4 and fixing nut 6 five
Be grouped into, fixing nut quantity is two, and sealing surface is connected by screw thread with leading screw, leading screw by leading screw fixing end cap via,
Leading screw and leading screw fixing end cap are fixed using former and later two fixing nuts, collateral branch's hush tube main body passes through with leading screw fixing end cap
Threaded connection, leading screw fixing end cap horizontally slip on leading screw.Fixing end cap 4 is different in the position of leading screw 3, realizes different noise eliminations
Frequency functionality.
Application method of the present utility model is as follows：
Step 1：It is determined that the frequency of noise elimination needed, by the way that quarter-wave, i.e. collateral branch's hush tube axial direction is calculated
Length.
Step 2：Collateral branch's hush tube main body total length subtracts quarter-wave, is fixed position of the end cap on leading screw
Put.
Step 3：According to the position being calculated, nut fixed closed face and the position of fixing end cap are utilized.
Step 4：Fixing end cap is connected with hush tube main body.
The beneficial effects of the utility model are repeatedly can quickly to adjust frequency of noise elimination, and multiple according to frequency range making
The silencing apparatus, and reuse, resource is saved, improves efficiency.This device can adjust silencing apparatus size, so change into
The frequency characteristic that gas system is eliminated the noise, the debugging stage is designed in gas handling system, saves exemplar Production Time, improves operating efficiency.
Embodiment one：
Certain vehicle gas handling system debug Qualify Phase, discovery two frequency noises be present, beyond simulation result expection, it is necessary to
Intake system noise optimization is carried out using quarter-wave long tube, is computed determining collateral branch's hush tube axial length, utilizes collateral branch
Hush tube total length subtracts the above-mentioned collateral branch's hush tube axial length being calculated, and adjusts fixing end cap, makes sealing surface to fixing end
Cap distance is equal to the difference of total length and collateral branch's hush tube axial length.Fixing end cap, carry out stand and complete vehicle test.
Claims (1)
1. a kind of regulable center frequency silencing apparatus, including silencing apparatus body, it is characterised in that：Silencing apparatus is eliminated the noise by collateral branch
Pipe main body, sealing surface, screw mandrel, screw mandrel fixing end cap and the part of fixing nut five composition, fixing nut quantity are two, sealing surface
It is connected by screw thread with leading screw, leading screw is by leading screw fixing end cap via, using former and later two fixing nuts by leading screw and leading screw
Fixing end cap is fixed, and collateral branch's hush tube main body is connected through a screw thread with leading screw fixing end cap, and leading screw fixing end cap is left on leading screw
Right slip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720838949.8U CN206921470U (en) | 2017-07-12 | 2017-07-12 | A kind of regulable center frequency silencing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720838949.8U CN206921470U (en) | 2017-07-12 | 2017-07-12 | A kind of regulable center frequency silencing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206921470U true CN206921470U (en) | 2018-01-23 |
Family
ID=61346795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720838949.8U Active CN206921470U (en) | 2017-07-12 | 2017-07-12 | A kind of regulable center frequency silencing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206921470U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109087625A (en) * | 2018-08-27 | 2018-12-25 | 电子科技大学 | The multipurpose active noise controller and its method of variable-length |
-
2017
- 2017-07-12 CN CN201720838949.8U patent/CN206921470U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109087625A (en) * | 2018-08-27 | 2018-12-25 | 电子科技大学 | The multipurpose active noise controller and its method of variable-length |
| CN109087625B (en) * | 2018-08-27 | 2023-03-31 | 电子科技大学 | Variable length multi-purpose active noise control apparatus and method thereof |
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