CN103195550B - A kind of diesel engine high temperature gas seal structure - Google Patents
A kind of diesel engine high temperature gas seal structure Download PDFInfo
- Publication number
- CN103195550B CN103195550B CN201310087026.XA CN201310087026A CN103195550B CN 103195550 B CN103195550 B CN 103195550B CN 201310087026 A CN201310087026 A CN 201310087026A CN 103195550 B CN103195550 B CN 103195550B
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- China
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- intubate
- pipeline section
- exhaust pipeline
- diesel engine
- seal ring
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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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- Gasket Seals (AREA)
- Exhaust Silencers (AREA)
Abstract
The present invention relates to a kind of diesel engine high temperature gas seal structure, comprise exhaust pipeline section, intubate, lower exhaust pipeline section, seal ring, can realize the sealing of high-temperature fuel gas under as far as possible few component, improve high-temperature fuel gas sealing reliability, and then improve the functional reliability of vehicle.
Description
Technical field
The invention belongs to Diesel Engine Technique Field, be specifically related to a kind of diesel engine high temperature gas seal structure.
Background technique
Diesel engine exhaust system is responsible for while the waste gas after by combustion in IC engine discharges, and subjects the high temperature of constantly change, the washing away and the shock and vibration of motor complete machine of high-pressure gas, the problems such as component easily deform, gas leakage.If gas leakage occurs vent systems, the lighter causes engine room to pollute, and catastrophe failure that severe one causes that engine room catches fire etc., causes immeasurable loss to car load.
General diesel engine high temperature gas seal structure comprises exhaust pipeline section, intubate, and the intubate seal ring structure of seal ring, easily gas leakage occurs, and can not meet special vehicle diesel engine high-temperature fuel gas sealing reliability.
Application Number (patent) is that the model utility of CN200720140461.4 discloses a kind of sealing structure for engine exhaust pipe: comprise pipe end, pipeline section and transition tube, pipe end, be connect by inserting mode between pipeline section and transition tube, in two sections of outlet pipes of grafting, pipeline section opens an annular groove, in groove, load the seal ring seal ring that two panels has radical elasticity.This model utility changes a traditional cylinder one section of outlet pipe into three cylinder one section, greatly can reduce exhaust gas leakage, have greatly improved to car load engine room environment.
Special vehicle requires high-temperature fuel gas sealing reliability, to reduce by the probability hit in fight, improves the battlefield survival of special vehicle, and general high temperature gas seal structure, sealing reliability is low, is difficult to the demand meeting special vehicle.
Summary of the invention
The present invention is directed to the defect that diesel engine high-temperature fuel gas easily leaks, propose a kind of high temperature gas seal structure meeting special vehicle demand.
The technical solution adopted in the present invention is: a kind of diesel engine high temperature gas seal structure, comprise exhaust pipeline section (1), intubate (2), lower exhaust pipeline section (4), it is characterized in that: described pipeline section (1) and the intubate (2) of being vented on airflow direction is transition fit, and lower exhaust pipeline section (4) and intubate (2) are Spielpassung.
Beneficial effect of the present invention:
By adopting outlet pipe and intubate one end transition fit and the other end Spielpassung along airflow direction, can significantly reduce or avoid vent systems high-temperature fuel gas to leak outside, raising vent systems sealability and complete machine functional reliability.
Accompanying drawing explanation
Fig. 1 is a kind of diesel engine high temperature gas seal structure schematic diagram.
1 be upper exhaust pipeline section 2 are intubate 3 are seal rings 4 is lower exhaust pipeline sections
Embodiment
During the connection part of high-temperature fuel gas by outlet pipe and intubate, outlet pipe and intubate all can expanded by heating, if outlet pipe is different with the thermal expansion coefficient of intubate, then easily there is high-temperature exhaust air to leak, preferred cannula material is selected and is adopted same material with upper outlet pipe 1 and lower outlet pipe 2, to ensure that outlet pipe and intubate have identical thermal expansion coefficient.
Preferably the material of outlet pipe and intubate is middle silicon ferrite cast iron QTSi-4.6 further.
For reducing leakage rate further, improving sealing reliability, preferably in intubate, designing closure gasket groove, in closure gasket groove, arrange seal ring.
Preferably respectively design two seals annular groove at the two ends of intubate.
The two-fold chip seal ring of preferred employing.
Seal ring breach in preferred per pass closure gasket groove differs 180 ° of layouts.
Claims (1)
1. a diesel engine high temperature gas seal structure, comprise exhaust pipeline section (1), intubate (2), lower exhaust pipeline section (4), it is characterized in that: described upper exhaust pipeline section (1) and intubate (2) are transition fit, lower exhaust pipeline section (4) and intubate (2) are Spielpassung; Intubate (2) is selected and is adopted same material with upper exhaust pipeline section (1) and lower exhaust pipeline section (4); The material that described intubate (2), upper exhaust pipeline section (1) and lower exhaust pipeline section (4) adopt is middle silicon ferrite cast iron QTSi-4.6; Also comprise seal ring (3), (2) have closure gasket groove to described intubate, and described seal ring (3) is contained on the closure gasket groove of intubate (2); Respectively there is two seals annular groove at the two ends of described intubate (2); Described seal ring (3) selects two-fold chip; Seal ring breach in described closure gasket groove differs 180 ° of layouts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310087026.XA CN103195550B (en) | 2013-03-19 | 2013-03-19 | A kind of diesel engine high temperature gas seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310087026.XA CN103195550B (en) | 2013-03-19 | 2013-03-19 | A kind of diesel engine high temperature gas seal structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103195550A CN103195550A (en) | 2013-07-10 |
| CN103195550B true CN103195550B (en) | 2016-04-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310087026.XA Active CN103195550B (en) | 2013-03-19 | 2013-03-19 | A kind of diesel engine high temperature gas seal structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN103195550B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106545394A (en) * | 2016-12-08 | 2017-03-29 | 中国北方发动机研究所(天津) | A kind of adjustable diesel exhaust gas pipe connection |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819069A (en) * | 2015-03-27 | 2015-08-05 | 中国北方发动机研究所(天津) | Engine exhaust sealing structure |
| CN105370369A (en) * | 2015-11-30 | 2016-03-02 | 柳州市恒达动力机械制造有限公司 | Exhaust pipe snap ring type seal connecting piece |
| CN105508009A (en) * | 2015-12-30 | 2016-04-20 | 广西玉柴机器股份有限公司 | Sealing structure of engine exhausting pipe |
| CN115095727A (en) * | 2022-06-21 | 2022-09-23 | 中国北方发动机研究所(天津) | Combined sealing structure based on multistage flow damping |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201025103Y (en) * | 2007-03-14 | 2008-02-20 | 中国兵器工业集团第七○研究所 | Sealing structure for engine exhaust pipe |
| CN202431346U (en) * | 2012-01-05 | 2012-09-12 | 广西玉柴机器股份有限公司 | Connecting structure of engine exhaust system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007297985A (en) * | 2006-05-01 | 2007-11-15 | Yamaha Motor Co Ltd | Gas exhaust system and vehicle equipped with the gas exhaust system |
| EP2324220B1 (en) * | 2008-08-14 | 2015-10-07 | Flexible Metal, Inc. | Improved exhaust manifold to housing connection |
| CN201513226U (en) * | 2009-09-28 | 2010-06-23 | 重庆科瑞实业有限责任公司 | Connecting structure of autobike silencing tube and exhaust pipe |
-
2013
- 2013-03-19 CN CN201310087026.XA patent/CN103195550B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201025103Y (en) * | 2007-03-14 | 2008-02-20 | 中国兵器工业集团第七○研究所 | Sealing structure for engine exhaust pipe |
| CN202431346U (en) * | 2012-01-05 | 2012-09-12 | 广西玉柴机器股份有限公司 | Connecting structure of engine exhaust system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106545394A (en) * | 2016-12-08 | 2017-03-29 | 中国北方发动机研究所(天津) | A kind of adjustable diesel exhaust gas pipe connection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103195550A (en) | 2013-07-10 |
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| CB03 | Change of inventor or designer information |
Inventor after: Wang Lianchun Inventor after: Wang Zengquan Inventor after: Zhang Guozheng Inventor after: Cui Yanjun Inventor after: Niu Jun Inventor after: Yao Chunlei Inventor after: Song Haitao Inventor before: Wang Zengquan Inventor before: Wang Lianchun Inventor before: Zhang Guozheng Inventor before: Cui Yanjun Inventor before: Niu Jun |
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