CN101852116B - Sealing structure of discharge hole and discharge pipeline of sound eliminating chamber of engine - Google Patents
Sealing structure of discharge hole and discharge pipeline of sound eliminating chamber of engine Download PDFInfo
- Publication number
- CN101852116B CN101852116B CN2010101797304A CN201010179730A CN101852116B CN 101852116 B CN101852116 B CN 101852116B CN 2010101797304 A CN2010101797304 A CN 2010101797304A CN 201010179730 A CN201010179730 A CN 201010179730A CN 101852116 B CN101852116 B CN 101852116B
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- Prior art keywords
- exhaust duct
- exhaust
- exhaust port
- discharge
- anechoic room
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Abstract
The invention relates to a sealing structure of a discharge hole and a discharge pipeline of a sound eliminating chamber of an engine, which comprises a discharge hole and a discharge pipeline, wherein the discharge hole is opened in the ground of the sound eliminating chamber; the discharge pipeline is positioned under the ground; one end of the discharge pipeline is positioned in the discharge hole; a stopper block is welded on the discharge pipeline and covers the lower port of the discharge hole; a sealing material formed by a heat insulating foam material layer and a sand layer is filled between the discharge pipeline and the discharge hole; and the heat insulating foam material layer is positioned between the stopper block and the sand layer. The sealing structure is quite reliable and ensures that the seal between the discharge hole and the discharge pipeline has favorable functions of sound insulation, heat insulation and vibration attenuation.
Description
Technical field
The present invention relates to the sealing configuration between pipeline and the pipeline via hole, the particularly sealing configuration of motor anechoic room exhaust port and exhaust duct.
Background technique
The noise that motor produces when work comprises this bulk noise of motor and the exhaust sound of motor, and when in the motor anechoic room, carrying out the engine noise test, what be directed against is this bulk noise of motor.Because the sound pressure level of engine exhaust noise is higher than the engine body noise far away; Therefore when the motor anechoic room carries out the engine noise test; Must the waste gas of motor discharge and the exhaust sound of generation be drawn outside the anechoic room, make it not influence the test of engine body noise.
(basement) below ground at the motor anechoic room is provided with exhaust duct; In anechoic room ground, offer exhaust port; One end of exhaust duct is arranged in exhaust port; Exhaust duct is connected with engine exhaust pipe through the flange plate of this end port, thereby the waste gas of motor discharge and the exhaust sound of generation are drawn outside the anechoic room through exhaust duct.Motor can encourage exhaust duct to produce bigger vibration when exhaust; The noise that vibration produces can import in the anechoic room through the slit between exhaust port and the exhaust duct; Influence the test of engine body noise, therefore must the slit between exhaust port and the exhaust duct be sealed reliably.
At present; Be to realize the sealing between exhaust port and the exhaust duct, but its sealing defening effect is bad at filled soft thermal-protective material between exhaust port and the exhaust duct, and; Owing to can produce great amount of heat during engine exhaust, make the temperature of exhaust duct reach 600～900 ℃.After being heated after a while, thermal-protective material meeting contraction deformation produces the slit, thereby loses the sound insulation effect between thermal-protective material and exhaust duct.
If between exhaust port and exhaust duct, fill common sound insulation property material (like stereotype, bipeltate etc.) preferably, this kind material but is difficult to stand 600～900 ℃ high temperature.
Though asbestos material can be high temperature resistant, it can powder under the vibration of outlet pipe, thereby lose the sound insulation effect becoming fragile through behind the high temperature.And asbestos itself are toxic materials, the meeting serious environment pollution, and the harm staff is healthy, does not meet environmental requirement.
The exotic material of general hard moulding (like refractory brick etc.), because can not be strict with the gap sealing between exhaust port and the exhaust duct, so do not have the effect of sound insulation.
Because exhaust duct has bigger vibration, so can not exhaust duct directly be poured into the ground of anechoic room, can give anechoic room ground with transfer of vibration like this with cement, influence the noise elimination effect of anechoic room.
Summary of the invention
The sealing configuration that the purpose of this invention is to provide a kind of motor anechoic room exhaust port and exhaust duct makes the sealing between exhaust port and the exhaust duct reliable, and has good sound insulation, heat insulation and damping effect.
The sealing configuration of motor anechoic room exhaust port according to the invention and exhaust duct; Comprise the exhaust port that is opened in the anechoic room ground; With the exhaust duct that is positioned at below ground, an end of exhaust duct is arranged in exhaust port, is filled with sealing material between itself and the exhaust port; On exhaust duct, be welded with block; The lower end mouth place that block is positioned at exhaust port hides the exhaust port lower end mouth, and said sealing material is made up of heat insulation foamed material layer and sand layer, and heat insulation foamed material layer is between said block and sand layer.
Block is as the supporting of heat insulation foamed material layer and sand layer, is used to prevent heat insulation foam material and the tenesmus of sand on it.Heat insulation foamed material layer is between baffle plate and the sand layer; Be used for the separated exhaust Analysis of Pipe Vibrations; Stoping this transfer of vibration to anechoic room ground, and decay below ground the noise of (basement) import in the anechoic room through exhaust port, the sand that prevents simultaneously to be in above it leaks downwards.The sand layer heat-blocking action with exhaust duct that is used to insulate against sound; Because sand has very strong flowability; Even have fine gap between exhaust port and the exhaust duct, sand can both be filled up immediately, thereby makes whole sealing configuration remain good heat-and sound-insulating performance; And the sand layer also can stop the transfer of vibration of exhaust duct to anechoic room ground well.
Has the gap between said block and the subsurface surface, to prevent that the vibration of exhaust duct is delivered to ground through baffle plate.
The present invention is owing to have this kind structure, can prevent well anechoic room below ground the transfer of vibration of (basement) exhaust duct to anechoic room ground, so have the excellent vibration damping effect; Because long-time high temperature produces distortion and when the slit occurring between the exhaust duct, this slit can be filled by sand immediately, so this kind sealing configuration is very reliable, thereby make it have good acoustical and thermal effect when heat insulation foam material.
Description of drawings
Combine accompanying drawing that the present invention is done further explain at present.
Fig. 1 is the schematic representation of the sealing configuration of motor anechoic room exhaust port according to the invention and exhaust duct.
Embodiment
As shown in Figure 1; The sealing configuration of this motor anechoic room exhaust port and exhaust duct comprises anechoic room ground 5, is opened in the exhaust port 2 in the anechoic room ground 5 and is positioned at the exhaust duct 7 of 5 belows, ground (basement); One end of exhaust duct 7 is arranged in exhaust port 2; On exhaust duct 7, be welded with block 6, the lower end mouth place that block 6 is positioned at exhaust port 2 hides exhaust port 2 lower end mouth, has certain interval 8 between block 6 and ground 5 lower surfaces.Between exhaust duct 7 and exhaust port 2, be filled with sealing material; Sealing material is made up of with sand layer 4 heat insulation foamed material layer 1; Heat insulation foam material is for being wrapped in asbestos rope on the exhaust duct 7; Heat insulation foamed material layer 1 is between said block 6 and sand layer 4, and the thickness of sand layer 4 is greater than the thickness of heat insulation foamed material layer 1, fits in flange plate 3 lower end surfaces of the upper surface of sand layer 4 and exhaust duct 7 ports.
Claims (4)
1. the sealing configuration of motor anechoic room exhaust port and exhaust duct; Comprise the exhaust port (2) that is opened in the anechoic room ground (5); With the exhaust duct (7) that is positioned at below ground, an end of exhaust duct is arranged in exhaust port, is filled with sealing material between itself and the exhaust port; It is characterized in that: on exhaust duct, be welded with block (6); The lower end mouth place that block is positioned at exhaust port hides the exhaust port lower end mouth, and said sealing material is made up of heat insulation foamed material layer (1) and sand layer (4), and heat insulation foamed material layer is between said block and sand layer.
2. the sealing configuration of motor anechoic room exhaust port according to claim 1 and exhaust duct is characterized in that: have gap (8) between said block (6) and ground (5) lower surface.
3. the sealing configuration of motor anechoic room exhaust port according to claim 1 and exhaust duct is characterized in that: the thickness of sand layer (4) is greater than the thickness of heat insulation foamed material layer (1).
4. according to the sealing configuration of claim 1 or 2 or 3 described motor anechoic room exhaust ports and exhaust duct, it is characterized in that: said heat insulation foamed material layer (1) is for being wrapped in the asbestos rope on the exhaust duct (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101797304A CN101852116B (en) | 2010-05-21 | 2010-05-21 | Sealing structure of discharge hole and discharge pipeline of sound eliminating chamber of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101797304A CN101852116B (en) | 2010-05-21 | 2010-05-21 | Sealing structure of discharge hole and discharge pipeline of sound eliminating chamber of engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101852116A CN101852116A (en) | 2010-10-06 |
| CN101852116B true CN101852116B (en) | 2012-07-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101797304A Expired - Fee Related CN101852116B (en) | 2010-05-21 | 2010-05-21 | Sealing structure of discharge hole and discharge pipeline of sound eliminating chamber of engine |
Country Status (1)
| Country | Link |
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| CN (1) | CN101852116B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279106A (en) * | 2011-03-31 | 2011-12-14 | 重庆长安汽车股份有限公司 | Exhaust pipe thermal insulating sound insulating device used for detecting engine noise |
| CN106246313A (en) * | 2016-08-31 | 2016-12-21 | 芜湖恒耀汽车零部件有限公司 | Automobile exhaust pipe vibration absorber padded coaming |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2866849Y (en) * | 2006-01-13 | 2007-02-07 | 南京金城机械有限公司 | Two-connector silencing device |
| CN101495722A (en) * | 2006-07-27 | 2009-07-29 | 康奈可关精株式会社 | Structure for exhaust pipe connection section of muffler |
| CN101598079A (en) * | 2009-07-21 | 2009-12-09 | 重庆隆鑫机车有限公司 | Motorcycle engine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3451587B2 (en) * | 1996-09-10 | 2003-09-29 | カルソニックカンセイ株式会社 | Pipe connection structure to silencer and method of connection |
-
2010
- 2010-05-21 CN CN2010101797304A patent/CN101852116B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2866849Y (en) * | 2006-01-13 | 2007-02-07 | 南京金城机械有限公司 | Two-connector silencing device |
| CN101495722A (en) * | 2006-07-27 | 2009-07-29 | 康奈可关精株式会社 | Structure for exhaust pipe connection section of muffler |
| CN101598079A (en) * | 2009-07-21 | 2009-12-09 | 重庆隆鑫机车有限公司 | Motorcycle engine |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平10-89059A 1998.04.07 |
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| Publication number | Publication date |
|---|---|
| CN101852116A (en) | 2010-10-06 |
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Granted publication date: 20120718 Termination date: 20190521 |
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| CF01 | Termination of patent right due to non-payment of annual fee |