CN203856559U - Segmented exhaust pipe interface sealing structure - Google Patents
Segmented exhaust pipe interface sealing structure Download PDFInfo
- Publication number
- CN203856559U CN203856559U CN201420166376.5U CN201420166376U CN203856559U CN 203856559 U CN203856559 U CN 203856559U CN 201420166376 U CN201420166376 U CN 201420166376U CN 203856559 U CN203856559 U CN 203856559U
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- seal ring
- exhaust pipe
- seal
- ring
- outlet pipe
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- 238000007789 sealing Methods 0.000 title claims abstract description 28
- 238000009434 installation Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005245 sintering Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 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
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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- Gasket Seals (AREA)
- Exhaust Silencers (AREA)
Abstract
The utility model discloses a segmented exhaust pipe interface sealing structure, comprising a front section exhaust pipe, a rear section exhaust pipe and a middle exhaust pipe for integrally connecting the front section exhaust pipe with the rear section exhaust pipe; first seal ring slots are arranged at the end parts of the front section exhaust pipe and the rear section exhaust pipe; first seal rings and second seal rings which are in contact with the inner walls of the ring slots are arranged in the first seal ring slots; first elastic support rings are arranged between the first seal rings and the second seal rings and can realize axial sealing; due to the axial contractility of the elastic support rings, the seal rings are prevented from being blocked; the interface of each seal ring is a slope; the upper and lower corners of each seal ring are same as the slope in inclined angle; the upper and lower corners are matched with the slopes; the size of the interfaces is reduced, so the gaps of the seal ring interfaces are greatly reduced, and the sealing capacity is improved; under the free state, the outer diameter of each seal ring is larger than the inner diameter of the middle exhaust pipe, so the radial sealing is realized. The segmented exhaust pipe interface sealing structure is simple in structure and good in sealing effect.
Description
Technical field
The utility model relates to a kind of segmented exhaust port place sealing configuration.
Background technique
In multicylinder engine application, thermal stress when whole outlet pipe cannot effectively discharge work, can cause distortion, damage the faults such as exhaust pipe gasket, thereby be segmented formula outlet pipe, replaces.The six cylinder machines of take are example, common are two-part outlet pipe and 3 stops outlet pipe.Fig. 1 is six cylinder machine 3 stops outlet pipe decomposing schematic representations.In Fig. 1, two ends are front and rear row tracheae, and centre is intermediate exhaust pipe, during the assembling of the two ends outlet pipe mouth of pipe, insert the intermediate exhaust pipe two ends mouth of pipe, form exhaust port place structure.
During outlet pipe work, can be subject to high-temperature exhaust air heat effect, Diesel Engine Exhaust Pipe highest temperature region is up to more than 700 ℃.Modern diesel engine mostly is supercharged diesel engine, and pressurized machine is arranged on outlet pipe, during work, between pressurized machine and motor, can produce Relative Vibration.Therefore the impact that outlet pipe not only can be subject to high temperature also can be subject to the impact of exhaust pipe of booster pipeline vibration.
In order to meet shell assembling capacity, between the interface of segmented outlet pipe, be designed to Spielpassung, excesssive gap, can bring more serious gas leakage consequence, must fitted seal structure realize sealing; Gap is too small, is not only difficult to assembling, and easy sintering between the mouth of pipe, worsens outlet pipe stress, causes the problems such as exhaust pipe gasket dislocation, outlet pipe crackle.
The sealing means at exhaust port place, common are following two kinds: a kind of is seal ring seal at present, and this sealing means, because exhaust pressure is not high, is difficult to seal ring to be pressed on closure gasket groove sidewall.In addition, seal ring vibration adjustability while considering assembling capacity and machining error and work, it is larger that annular groove width can compress thickness than two seals ring, therefore causes seal ring and annular groove sidewall effectively to fit, and cannot realize axial effective sealing.In order to prevent seal ring sintering and to reduce the friction factor between seal ring and between seal ring and annular groove sidewall, standing in respect of coating on seal ring.When work, due to the effect of high temperature, exhaust port, seal ring meeting expanded by heating and thermal distortion, cause seal ring clamping stagnation, makes it lose vibration regulating power, causes radial seal inefficacy, causes gas leakage.In addition, coating is selected improper, and seal ring clamping stagnation is accelerated in the expansion of can going bad when high temperature.Air leakage is large, seal ring clamping stagnation is two kinds of common fault modes of sealing mode.Another kind is heat expansion sealing, adopts the outlet pipe mouth of pipe size that heat expansion mode seals strictly to control, and different motors, use different outlet pipe materials, and mouth of pipe size must corresponding adjustment.The radial clearance of heat expansion type interface is less in addition, more difficult during assembling.This kind of common failure model of sealing means is exhaust port place sintering, and the similar Integral exhaustion type pipe of outlet pipe that interface sintering is serious, will bring variety of issue.
Model utility content
The technical problems to be solved in the utility model is for above-mentioned defect, a kind of good sealing effect is provided, can avoids seal ring catching phenomenon, has can be applicable to the segmented exhaust port place sealing configuration of high-temperature vibrating state.
In order to solve the problems of the technologies described above, the utility model comprises front exhaust pipe, back segment outlet pipe and the intermediate exhaust pipe that the two is connected as one, the end of described front exhaust pipe and back segment outlet pipe is provided with the first closure gasket groove, the first seal ring and the second seal ring that contact with annular groove inwall are installed in the first closure gasket groove, the first elasticity pushing out ring is installed between described the first seal ring and the second seal ring.
The end of described front exhaust pipe and back segment outlet pipe is provided with and spaced the second closure gasket groove of the first closure gasket groove from inside to outside, the 3rd seal ring and the 4th seal ring that contact with annular groove inwall are installed in described the second closure gasket groove, between described the 3rd seal ring and the 4th seal ring, the second elasticity pushing out ring are installed.
The jointing of described each seal ring is inclined-plane, and the inclined-plane of described each seal ring jointing is consistent with seal ring knuckle gradient.
Two jointings of described the first seal ring and the second seal ring are staggered installation of; Two jointings of described the 3rd seal ring and the 4th seal ring are staggered installation of.
The external diameter of described each seal ring is greater than the internal diameter of intermediate exhaust pipe.
Compared with prior art the utlity model has following advantage: two seal rings are installed in closure gasket groove, between two seal rings, elasticity pushing out ring is installed, can realize axial seal, axial contractility due to elasticity pushing out ring, therefore seal ring clamping stagnation can be prevented, high-temperature vibrating state can be effectively applied to; The jointing of each seal ring is inclined-plane, the place of knuckle up and down of each seal ring is all identical with the angle of inclination on inclined-plane, and the knuckle up and down of each seal ring coordinates with inclined-plane, dwindles the size of jointing, thereby seal ring jointing gap is significantly reduced, and sealability significantly promotes; The external diameter of each seal ring is greater than the internal diameter of intermediate exhaust pipe, realizes the radial seal of outlet pipe, and the utility model is simple in structure, easy to use, has labyrinth sealing feature, the working environment of applicable exhaust port place high temperature, vibration.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail:
Fig. 1 is 3 stops outlet pipe decomposing schematic representation;
Fig. 2 is the annexation figure of front and rear row tracheae and intermediate exhaust pipe;
Fig. 3 is the assembling schematic diagram of seal ring, elasticity pushing out ring and closure gasket groove;
Fig. 4 is the structural representation of elasticity pushing out ring;
Fig. 5 is the free state figure of seal ring;
Fig. 6 is the compressive state figure of seal ring.
Embodiment
With reference to accompanying drawing, take 3 stops outlet pipe as example, this segmented exhaust port place sealing configuration comprises front exhaust pipe 1, back segment outlet pipe 3 and the intermediate exhaust pipe 2 that the two is connected as one, the end of front exhaust pipe 1 and back segment outlet pipe 3 is provided with the first closure gasket groove 4, in the first closure gasket groove 4, be provided with between the first seal ring 6 of contacting with annular groove inwall and the second seal ring 7, the first seal rings 6 and the second seal ring 7 the first elasticity pushing out ring 9 is installed; The end of front end outlet pipe 1 and back segment outlet pipe 3 is provided with and spaced the second closure gasket groove 5 of the first closure gasket groove 4 from inside to outside, in the second closure gasket groove 5, be provided with between the 3rd seal ring 8 that contacts with annular groove inwall and the 4th seal ring 10, the three seal rings 8 and the 4th seal ring 10 the second elasticity pushing out ring 11 is installed.The projection of elasticity pushing out ring described in the present embodiment on radial plane is in wave shape, and elasticity pushing out ring is provided with breach, elasticity pushing out ring is arranged between two seal rings, and the elasticity of elasticity pushing out ring makes the seal ring of its both sides compress both sides annular groove wall, effectively realizes axial seal.The external diameter of each seal ring is greater than the internal diameter of intermediate exhaust pipe 2, when seal ring is subject to lateral extrusion, can resilient radial shrink.Therefore, after assembling, multiple-sealed ring can be close to intermediate exhaust pipe 2 external tapping walls, forms radial seal.
It is a sealing unit that the utility model be take two seal rings, elasticity pushing out ring, an annular groove.For enhanced leaktightness effect, can use the sealing of a plurality of units.The utility model can be used for the interface position of multistage outlet pipe, as two sections, 3 stops outlet pipe etc.
When exhaust pressure is greater than elasticity pushing out ring end thrust, the right wall of the 4th seal ring 10 can be separated with the right wall of the second closure gasket groove 5, the second elasticity pushing out ring 11 is compressive state, exhaust meeting flows into seal ring 8 along between two wall gaps, the inner chamber that the 10 and second closure gasket groove 5 forms, from the 3rd seal ring 8 left side interfaces, overflow, when exhaust stream to the second seal ring 7 right side interface, experience once expands, pressure has greater loss, be not enough to the axial force of the first elasticity pushing out ring 9 after overcoming, exhaust can only enter into seal ring 6 from the second seal ring 7 right side interfaces, the inner chamber that the 7 and first closure gasket groove 4 forms, experience expands again, energy and pressure weaken, finally from the first seal ring 6 left side interfaces, overflow.In the present embodiment, the jointing of each seal ring is inclined-plane, the inclined-plane of jointing is consistent with the gradient at the place of knuckle up and down of each seal ring, the knuckle up and down of each seal ring coordinates with inclined-plane, thereby seal ring jointing gap is significantly reduced, and sealability significantly promotes.
Utilize the axial contractility of elasticity pushing out ring, can prevent seal ring clamping stagnation, thereby prevent seal failure, and can effectively be applied to high-temperature vibrating state.
When exhaust pressure is less than elasticity pushing out ring end thrust, the right wall of the 4th seal ring 10 and the right wall of the second closure gasket groove 5 are still fitted, exhaust can only enter from the 4th seal ring 10 right side interfaces the inner chamber of seal ring 8,10 and the second closure gasket groove 5 formation, from the 3rd seal ring 8 left side interfaces, flow out, after the inner chamber that seal ring 7,8 and the outlet pipe 1,2 of flowing through forms, the inner chamber that enters seal ring 6,7 and the first closure gasket groove 4 formation from the second seal ring 7 right side interfaces, finally overflows from the first seal ring 6 left side interfaces.In the present embodiment, seal ring 6,7 interfaces stagger and stagger and stagger compared with wide-angle compared with wide-angle, seal ring 8,10 interfaces compared with wide-angle, seal ring 7,8 interfaces, to guarantee that exhaust stream is through three inner chambers, after occurring fully to expand, flow out again.The triple-expansion of exhaust experience, energy and pressure weaken step by step, and seal ring interface is less in addition, therefore can realize effective sealing.
In the utility model, on the outlet pipe of rear and front end, also a closure gasket groove can be only set, one group of seal ring and elasticity pushing out ring are installed, this structure requires not tight situation to use in leakage rate, can meet seal request.
The utility model is not limited to above-mentioned embodiment, and 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 place sealing configuration, comprise front exhaust pipe (1), back segment outlet pipe (3) and the intermediate exhaust pipe (2) that the two is connected as one, the end of described front exhaust pipe (1) and back segment outlet pipe (3) is provided with the first closure gasket groove (4), the first seal ring (6) and the second seal ring (7) that contact with annular groove inwall are installed in the first closure gasket groove (4), the first elasticity pushing out ring (9) is installed between described the first seal ring (6) and the second seal ring (7).
2. segmented exhaust port according to claim 1 place sealing configuration, it is characterized in that: the end of described front exhaust pipe (1) and back segment outlet pipe (3) is provided with and spaced the second closure gasket groove of the first closure gasket groove (4) (5) from inside to outside, the 3rd seal ring (8) and the 4th seal ring (10) that contact with annular groove inwall are installed in described the second closure gasket groove (5), between described the 3rd seal ring (8) and the 4th seal ring (10), the second elasticity pushing out ring (11) are installed.
3. segmented exhaust port according to claim 2 place sealing configuration, is characterized in that: the jointing of described each seal ring is inclined-plane, and the inclined-plane of described each seal ring jointing is consistent with seal ring knuckle gradient.
4. segmented exhaust port according to claim 2 place sealing configuration, is characterized in that: two jointings of described the first seal ring (6) and the second seal ring (7) are staggered installation of; Two jointings of described the 3rd seal ring (8) and the 4th seal ring (10) are staggered installation of.
5. segmented exhaust port according to claim 2 place sealing configuration, is characterized in that: the external diameter of described each seal ring is greater than the internal diameter of intermediate exhaust pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420166376.5U CN203856559U (en) | 2014-04-08 | 2014-04-08 | Segmented exhaust pipe interface sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420166376.5U CN203856559U (en) | 2014-04-08 | 2014-04-08 | Segmented exhaust pipe interface sealing structure |
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| CN203856559U true CN203856559U (en) | 2014-10-01 |
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| CN201420166376.5U Expired - Lifetime CN203856559U (en) | 2014-04-08 | 2014-04-08 | Segmented exhaust pipe interface sealing structure |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN108757137A (en) * | 2018-08-01 | 2018-11-06 | 广西玉柴机器股份有限公司 | The sealing structure of segmented exhaust system |
| CN109084578A (en) * | 2018-05-25 | 2018-12-25 | 河南龙成煤高效技术应用有限公司 | A kind of high warm tube plate sealing device and rotary kiln |
| CN111396184A (en) * | 2020-03-18 | 2020-07-10 | 广西玉柴机器股份有限公司 | Novel engine exhaust pipe sealing structure |
| CN111878208A (en) * | 2020-08-28 | 2020-11-03 | 广西玉柴机器股份有限公司 | Exhaust pipe sealing structure capable of effectively sealing high-temperature gas |
| CN114135379A (en) * | 2021-11-19 | 2022-03-04 | 中国北方发动机研究所(天津) | Sealed exhaust wave combination seal structure |
| CN114135728A (en) * | 2021-11-19 | 2022-03-04 | 中国北方发动机研究所(天津) | Sealing structure supported by flexible multiple points |
| CN115095442A (en) * | 2022-06-30 | 2022-09-23 | 广西玉柴机器股份有限公司 | Sectional type exhaust pipe with sealing filler and sealing method thereof |
-
2014
- 2014-04-08 CN CN201420166376.5U patent/CN203856559U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN109084578A (en) * | 2018-05-25 | 2018-12-25 | 河南龙成煤高效技术应用有限公司 | A kind of high warm tube plate sealing device and rotary kiln |
| CN108757137B (en) * | 2018-08-01 | 2020-02-21 | 广西玉柴机器股份有限公司 | Sealing structure of sectional type exhaust system |
| CN108757137A (en) * | 2018-08-01 | 2018-11-06 | 广西玉柴机器股份有限公司 | The sealing structure of segmented exhaust system |
| CN111396184A (en) * | 2020-03-18 | 2020-07-10 | 广西玉柴机器股份有限公司 | Novel engine exhaust pipe sealing structure |
| CN111878208A (en) * | 2020-08-28 | 2020-11-03 | 广西玉柴机器股份有限公司 | Exhaust pipe sealing structure capable of effectively sealing high-temperature gas |
| CN114135379A (en) * | 2021-11-19 | 2022-03-04 | 中国北方发动机研究所(天津) | Sealed exhaust wave combination seal structure |
| CN114135728A (en) * | 2021-11-19 | 2022-03-04 | 中国北方发动机研究所(天津) | Sealing structure supported by flexible multiple points |
| CN114135728B (en) * | 2021-11-19 | 2023-11-21 | 中国北方发动机研究所(天津) | Sealing structure of flexible multi-point support |
| CN115095442A (en) * | 2022-06-30 | 2022-09-23 | 广西玉柴机器股份有限公司 | Sectional type exhaust pipe with sealing filler and sealing method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141001 |