CN203717095U - Sectional type exhaust pipe connector seal structure - Google Patents
Sectional type exhaust pipe connector seal structure Download PDFInfo
- Publication number
- CN203717095U CN203717095U CN201320728387.3U CN201320728387U CN203717095U CN 203717095 U CN203717095 U CN 203717095U CN 201320728387 U CN201320728387 U CN 201320728387U CN 203717095 U CN203717095 U CN 203717095U
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- Prior art keywords
- pipeline section
- type circle
- metal hollow
- annular
- overcoat
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- Expired - Lifetime
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- 238000007789 sealing Methods 0.000 claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 29
- 239000007789 gas Substances 0.000 description 11
- 238000005245 sintering Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model relates to a sectional type exhaust pipe connector seal structure which comprises an exhaust pipe body as well as an inner inserting pipe section and an outer casing pipe section which are respectively connected to the two ends of the exhaust pipe body, wherein the inner diameter of the outer casing pipe section is greater than that of the exhaust pipe body and an annular platform is formed at the joint of the inner cavities of the outer casing pipe section and the exhaust pipe body; the outer pipe wall of the inner inserting pipe section is in clearance fit with the inner cavity wall of the outer casing pipe section; the thickness of the pipe wall at the front end of the inner inserting pipe section is gradually reduced from inside to outside and an annular slope is formed on the outer pipe wall of the inner inserting pipe section; a metal hollow O-shaped ring is arranged between the annular slope and the annular platform. The seal structure has the advantages of simple structure, convenient assembling, small mutual influence of the pipe sections and good sealing effect.
Description
Technical field
The utility model relates to engine exhaust pipe field, specifically a kind of segmented exhaust port sealing configuration.
Background technique
In multicylinder engine application, thermal stress when overall outlet pipe cannot effectively discharge work, can cause distortion, damage the faults such as exhaust pipe gasket, replaces thereby be segmented formula outlet pipe.Taking six cylinder engine as example, common are two-part outlet pipe and 3 stops outlet pipe.
In addition, on current diesel engine, pressurized machine is essential, and is often arranged on outlet pipe.Visible, when outlet pipe work, can be subject to the vibration of high-temperature exhaust air heating volume booster pipeline.
Between the interface of segmented outlet pipe, be often designed to Spielpassung, this design not only will meet outlet pipe assembling capacity, and sintering between interface while also needing to prevent engine operation, therefore the gap of segmented exhaust port should be not too small.More serious gas leakage consequence be can bring and interface gaps is excessive, engine combustion, performance and deterioration of emission made.
Common exhaust port sealing means has following two kinds at present:
1) seal ring seal, offers annular groove at the outer wall of outlet pipe interpolation pipeline section, and seal ring is installed in annular groove, and outlet pipe overcoat pipeline section is sleeved on interpolation pipeline section.Seal ring is close to the inwall of outlet pipe overcoat pipeline section, and exhaust is through out-of-date, and due to the effect of exhaust pressure, seal ring is pressed towards a side wall surface of annular groove, to realize radial and axial sealing.
2) heat expansion sealing, directly outlet pipe overcoat pipeline section and interpolation pipeline section plug-in mounting are coordinated, only leave very little gap between the two, when engine start, delivery temperature is low, gap location must leak gas, along with Tail Pipe Temperature raises gradually, all there is heat expansion in interpolation pipeline section and overcoat pipeline section, and both reduce gradually radial clearance, until disappear to gap, realize sealing.
For seal ring seal, from its sealing principle, in order effectively to realize sealing, seal ring must be realized radial and axial sealing simultaneously.Because the pressure of exhaust is not high, be difficult to seal ring to be pressed on the sidewall of annular groove, sealing effect is poor.And seal ring can only adopt mazy sealing configuration, the gas leakage of exhaust port place certainly exists.
For heat expansion sealing, the outlet pipe interpolation pipeline section that employing heat expansion mode seals and the size of overcoat pipeline section must strictly be controlled, and different motors, use different outlet pipe materials, and body size must corresponding adjustment.In addition, the radial clearance of heat expansion type interface is less, more difficult when assembling.Meanwhile, this kind of sealing means often causes exhaust port place sintering, and the serious outlet pipe of interface sintering, close to Integral exhaustion type pipe, will bring variety of issue.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of pipeline section simple in structure, easy to assembly, each segmented exhaust port sealing configuration little and that sealing joint is effective that influences each other.
For solving the problems of the technologies described above, segmented exhaust port sealing configuration of the present utility model comprises interpolation pipeline section and the overcoat pipeline section of outlet pipe body jointing, its structural feature is that the internal diameter of described overcoat pipeline section is greater than the internal diameter of outlet pipe body and the intersection of both inner chambers forms an annular table, the internal chamber wall Spielpassung of the outer tube wall of interpolation pipeline section and overcoat pipeline section, the thickness of interpolation pipeline section front tube wall is attenuation form an annular slope on its outer tube wall gradually from inside to outside, is provided with metal hollow O type circle between above-mentioned annular slope and annular table.
Between the table top of described metal hollow O type circle and annular table, the internal chamber wall of overcoat pipeline section and annular slope, form respectively the first seal band, the second seal band and the 3rd seal band.
The domatic of described annular slope is arc shaped surface.
The domatic of described annular slope is flat face.
The external diameter of described metal hollow O type circle is slightly less than the internal diameter of overcoat pipeline section, and the internal diameter of metal hollow O type circle is slightly larger than the front end external diameter of interpolation pipeline section.
Described metal hollow O type circle is the gas type metal hollow O type circle that is filled with gas in hollow lumen.
Adopt said structure, after assembling, metal hollow O type circle is interpolated pipeline section and elasto plastic deformation occurs the extruding of overcoat pipeline section, and cross section is ellipticity, and the three seals endless belt of formation seals while having realized engine start.In the time of engine operation, temperature raises, the gas expansion in metal hollow O type circle, produce spring action, outer support metal hollow O type circle, thus increase the pressure of seal band, make sealing more reliable, visible, adopt sealing configuration of the present utility model can realize the sealing completely at exhaust port place; In the utility model, to the interface gaps of interpolation pipe section and overcoat pipeline section, without strict demand, its gap can be with the interface gaps of seal ring seal mode, thereby can avoid exhaust port place sintering; Because metal hollow O type circle separates outlet pipe interpolation pipeline section and overcoat pipeline section, and and and interpolation pipeline section between only form together with seal band, therefore, sealing means of the present utility model can effectively weaken the mutual impact of segmented outlet pipe, gives full play to the advantage of segmented outlet pipe; Due to the existence of outlet pipe assembly error, can make after interpolation pipeline section and the assembling of overcoat pipeline section, axle center cannot overlap completely, because the applicable ability of metal hollow O type circle distortion is stronger, can effectively solve this assembly problem, realizes reliable sealing.
In sum, the utlity model has simple in structure, easy to assembly, each pipeline section advantage little and that sealing joint is effective that influences each other.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of the another kind of mode of execution of the utility model.
Embodiment
With reference to accompanying drawing, segmented exhaust port sealing configuration of the present utility model comprises outlet pipe body 1 and is connected to the interpolation pipeline section 2 and overcoat pipeline section 3 at outlet pipe body 1 two ends, the internal diameter of overcoat pipeline section 3 is greater than the internal diameter of outlet pipe body 1 and the intersection of both inner chambers forms an annular table 4, the internal chamber wall Spielpassung of the outer tube wall of interpolation pipeline section 2 and overcoat pipeline section 3, the thickness of interpolation pipeline section 2 front end tube walls is attenuation form an annular slope 5 on its outer tube wall gradually from inside to outside, is provided with metal hollow O type circle 6 between above-mentioned annular slope 4 and annular table 4.Wherein, for metal hollow O type circle, it can be for being filled with the gas type metal hollow O type circle of gas in hollow lumen.For gas type metal hollow O type circle, it is that drikold etc. is put into hollow lumen, makes it to be gasificated into gas after welding, or directly in hollow lumen, fills with high-pressure inert gas.The external diameter of metal hollow O type circle 6 is slightly less than the internal diameter of overcoat pipeline section 3, and the internal diameter of metal hollow O type circle 6 is slightly larger than the front end external diameter of interpolation pipeline section 2.Between the table top of metal hollow O type circle 6 and annular table 4, the internal chamber wall of overcoat pipeline section 3 and annular slope 5, form respectively the first seal band 7, the second seal band 8 and the 3rd seal band 9.
For annular slope, it is domatic can be that arc shaped surface as shown in Figure 1 can be also flat face as described in Figure 2.Two kinds of structures all can form the 3rd seal band 9 with metal O type circle 6 on domatic.
After the utility model assembling, metal hollow O type circle 6 is interpolated pipeline section 2 and elasto plastic deformation occurs 3 extruding of overcoat pipeline section, and cross section is ellipticity, and the three seals endless belt of formation seals while having realized engine start.In the time of engine operation, temperature raises, and the gas expansion in metal hollow O type circle 6 produces spring action, outer support metal hollow O type circle 6, thus increase the pressure of each seal band, make sealing more reliable.
With reference to accompanying drawing, for the ease of assembling, the inner tubal wall of the plug-in mounting end of overcoat pipeline section 3 carries out chamfering, forms flaring plug-in mounting mouth structure.
In sum, the utility model is not limited to above-mentioned embodiment.Those skilled in the art, not departing under the prerequisite of spirit and scope of the present utility model, can do some changes and modification.Protection domain of the present utility model should be as the criterion with claim of the present utility model.
Claims (5)
1. a segmented exhaust port sealing configuration, comprise interpolation pipeline section (2) and the overcoat pipeline section (3) of outlet pipe body (1) jointing, the internal diameter that it is characterized in that described overcoat pipeline section (3) is greater than the internal diameter of outlet pipe body (1) and the intersection of both inner chambers forms an annular table (4), the internal chamber wall Spielpassung of the outer tube wall of interpolation pipeline section (2) and overcoat pipeline section (3), the thickness of interpolation pipeline section (2) front end tube wall is attenuation form an annular slope (5) on its outer tube wall gradually from inside to outside, between above-mentioned annular slope (4) and annular table (4), be provided with metal hollow O type circle (6), between the table top of described metal hollow O type circle (6) and annular table (4), the internal chamber wall of overcoat pipeline section (3) and annular slope (5), form respectively the first seal band (7), the second seal band (8) and the 3rd seal band (9).
2. segmented exhaust port sealing configuration as claimed in claim 1, is characterized in that the domatic of described annular slope (4) is arc shaped surface.
3. segmented exhaust port sealing configuration as claimed in claim 1, is characterized in that the domatic of described annular slope (4) is flat face.
4. segmented exhaust port sealing configuration as claimed in claim 1, it is characterized in that the external diameter of described metal hollow O type circle (6) is slightly less than the internal diameter of overcoat pipeline section (3), the internal diameter of metal hollow O type circle (6) is slightly larger than the front end external diameter of interpolation pipeline section (2).
5. the segmented exhaust port sealing configuration as described in any one in claim 1 to 4, is characterized in that described metal hollow O type circle (6) for being filled with the gas type metal hollow O type circle of gas in hollow lumen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320728387.3U CN203717095U (en) | 2013-11-19 | 2013-11-19 | Sectional type exhaust pipe connector seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320728387.3U CN203717095U (en) | 2013-11-19 | 2013-11-19 | Sectional type exhaust pipe connector seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203717095U true CN203717095U (en) | 2014-07-16 |
Family
ID=51156257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320728387.3U Expired - Lifetime CN203717095U (en) | 2013-11-19 | 2013-11-19 | Sectional type exhaust pipe connector seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203717095U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165712A (en) * | 2017-07-13 | 2017-09-15 | 广西玉柴机器股份有限公司 | Engine is segmented the connection sealing structure of blast pipe |
| CN110273742A (en) * | 2018-03-15 | 2019-09-24 | 常州良旭车辆配件有限公司 | One kind playing hoop flange exhaust pipe connection structure and its assembly method |
| WO2020253405A1 (en) * | 2019-06-20 | 2020-12-24 | 江苏神通阀门股份有限公司 | Helium-level elastic double-sealing cut-off valve disc structure |
-
2013
- 2013-11-19 CN CN201320728387.3U patent/CN203717095U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165712A (en) * | 2017-07-13 | 2017-09-15 | 广西玉柴机器股份有限公司 | Engine is segmented the connection sealing structure of blast pipe |
| CN107165712B (en) * | 2017-07-13 | 2018-08-21 | 广西玉柴机器股份有限公司 | Engine is segmented the connection sealing structure of exhaust pipe |
| CN110273742A (en) * | 2018-03-15 | 2019-09-24 | 常州良旭车辆配件有限公司 | One kind playing hoop flange exhaust pipe connection structure and its assembly method |
| WO2020253405A1 (en) * | 2019-06-20 | 2020-12-24 | 江苏神通阀门股份有限公司 | Helium-level elastic double-sealing cut-off valve disc structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140716 |
|
| CX01 | Expiry of patent term |