CN208816912U - A kind of exhaust system gas self-locking sealing structure - Google Patents
A kind of exhaust system gas self-locking sealing structure Download PDFInfo
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- CN208816912U CN208816912U CN201821207234.3U CN201821207234U CN208816912U CN 208816912 U CN208816912 U CN 208816912U CN 201821207234 U CN201821207234 U CN 201821207234U CN 208816912 U CN208816912 U CN 208816912U
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- sealing
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- sealing structure
- locking
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Abstract
The utility model relates to a kind of exhaust system gas self-locking sealing structure, including two connecting tubes, two connecting tubes pass through the ring flange respectively come with and are connected as one, and are provided with sealing ring between two ring flanges.The gas load sealed is utilized in the exhaust system gas self-locking sealing structure, realizes self-locking, better tightness.The exhaust system gas self-locking sealing structure is not in the increase of leakage rate when gas pressure increases in application process.Sealing ring in the exhaust system gas self-locking sealing structure can be recycled for multiple times, and save cost.The exhaust system gas self-locking sealing structure realizes light-weighted purpose.
Description
Technical field
The utility model relates to automobile exhaust system technical field of sealing technology, and in particular to a kind of exhaust system gas is self-locking close
Seal structure.
Background technique
It is limited by production assembly, after-sales service etc., generally for a complete gas piping (such as automobile exhaust
System) need to be divided into several sections, the junction being respectively segmented needs to be attached by flanged joint pair, is carried out using gasket seal
Sealing, in order to avoid there is gas leakage.
For automobile exhaust system, since exhaust system is work in environment of high temperature gas, in order to guarantee its leakproofness,
Mode universal at present is to realize the sealing of junction by metallic packing using face-flange.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, a kind of conventional exhaust systems gas sealing structure includes setting
It sets in the face-flange disk 1 in connecting tube 4 and the gasket seal 2 being clamped between two face-flange disks 1, further includes bolt
3 and nut 5, nut 5 be used cooperatively with bolt 3, for gasket seal 2 to be clamped between two face-flange disks 1.
As shown in Fig. 2, realizing sealing, leakproofness master by the interaction between face-flange disk 1 and gasket seal 2
Will by the elastic force of the gasket seal 2 of metal, gasket seal 2 as shown in Figure 2 to the F2 active force of face-flange disk 1 and
F2 ' active force, while face-flange disk 1 is to reaction force F1 and the F1 ' of gasket seal 2.It is close in the preferable situation of elastic force
Sealing property is relatively preferable.But due to exhaust system be all in most cases work in the high temperature environment, it is close under high-temperature condition
The mechanical performance meeting relative reduction of gasket 2, the sealing performance of the conventional exhaust systems gas sealing structure can gradually weaken, should
Conventional exhaust systems gas sealing structure the case where leakage rate increasing can occur with the increase of gas pressure, i.e., such as Fig. 2 institute
Showing, gas can overflow with the increase of pressure and from the gap that gasket seal 2 and plane ring flange 1 contact, and leak,
Gasket seal 2 can not achieve secondary use after hot environment works simultaneously.It must be more when assembling again after dismantling
The gasket seal 2 renewed.
Summary of the invention
The purpose of this utility model is to propose a kind of exhaust system gas self-locking sealing structure, and the exhaust system gas is self-locking
Sealing structure increases with gas pressure, and guarantees the increase for not occurring leakage rate, and the exhaust system gas self-locking seal knot
Structure can be recycled for multiple times, and save cost.
A kind of exhaust system gas self-locking sealing structure described in the utility model, including two connecting tubes, described in two
Connecting tube passes through the ring flange respectively come with and is connected as one, and sealing ring, the flange are provided between two ring flanges
The disk hole edge of disk is provided with cascaded surface, and the cascaded surface of two ring flanges is opposite to surround a groove, the sealing ring dress
In the groove, in terms of the sealing ring axial cross section, in-between main part is arc-shaped, and arc projecting surface is far from described recessed
Groove bottom, the end at both ends are the arc reversed with main part, and the protrusion of arc is tightly attached to the groove floor close to turning
Angle Position is sealing area B, and it is sealing area A that the least significant end of the end, which is affixed on the recess sidewall close to corner location,
The sealing ring is contacted with the ring flange by sealing area A and sealing area B and realizes static sealing.
Implement novel further improvement as this, the sealing ring is inside and outside double-layer structure.
The utility model has the advantage that the gas sealed is utilized in one, this exhaust system gas self-locking sealing structure
Body active force realizes self-locking, better tightness.Two, this exhaust system gas self-locking sealing structure in application process, when
It is not in the increase of leakage rate when gas pressure increases.Three, the sealing in this exhaust system gas self-locking sealing structure
Circle can be recycled for multiple times, and save cost.Four, this exhaust system gas self-locking sealing structure realizes light-weighted mesh
's.
Detailed description of the invention
Fig. 1 is conventional exhaust systems gas sealing structure schematic diagram；
Fig. 2 is the sealing principle schematic diagram of conventional exhaust systems gas sealing structure；
Fig. 3 is the face-flange dish structure schematic diagram of conventional exhaust systems gas sealing structure
Fig. 4 is one of the sheet gasket structure schematic diagram of conventional exhaust systems gas sealing structure；
Fig. 5 is the two of the sheet gasket structure schematic diagram of conventional exhaust systems gas sealing structure；
Fig. 6 is the three of the sheet gasket structure schematic diagram of conventional exhaust systems gas sealing structure；
Fig. 7 is the four of the sheet gasket structure schematic diagram of conventional exhaust systems gas sealing structure；
Fig. 8 is the structural schematic diagram of the utility model；
Fig. 9 is the principle schematic diagram of the utility model；
Figure 10 is the enlarged drawing of Fig. 9；
Figure 11 is the ladder flange plate structure schematic diagram of the utility model；
Figure 12 is one of the structural schematic diagram of sealing ring of the utility model；
Figure 13 is the second structural representation of the sealing ring of the utility model；
Figure 14 is the third structural representation of the sealing ring of the utility model；
Figure 15 is the four of the structural schematic diagram of the sealing ring of the utility model.
In figure: 1-face-flange disk；2-gasket seals；3-bolts；4-connecting tubes；5-nuts；6-ring flanges；
7-sealing rings；8-grooves.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
As shown in Fig. 8, Fig. 9, Figure 10, a kind of exhaust system gas self-locking sealing structure, including two connecting tubes 4, two
Connecting tube 4 passes through the ring flange 6 respectively come with and is connected as one, and sealing ring 7 is provided between two ring flanges 6, ring flange 6
Disk hole edge is provided with cascaded surface, and the cascaded surface of two ring flanges 6 is opposite to surround a groove 8, and sealing ring 7 is mounted in groove 8,
In terms of 7 axial cross section of sealing ring, in-between main part 71 is arc-shaped, and arc projecting surface is far from 8 bottom surface of groove, both ends
End 72 be the arc reversed with main part 71, the protrusion of arc is tightly attached to 8 bottom surface of groove close to corner location, for sealing
Region B, the least significant end of end 72 are affixed on 8 side wall 61 of groove close to corner location, are sealing area A, sealing ring 7 passes through seal area
Domain A and sealing area B is contacted with ring flange 6 realizes static sealing.
In the present embodiment, sealing ring 7 is inside and outside double-layer structure.
In the present embodiment, bolt 3 passes through ring flange 6, and then nut 5 is tightened on 3 screw flight of bolt, is reached
Sealing ring 7 is pressed on the purpose between two ring flanges 6.
In the present embodiment, sealing ring 7 is contacted with ring flange 6 by region A and region B and realizes static sealing, wherein close
Seal 7 is F2 in the active force that a-quadrant acts on ring flange 6, and sealing ring 7 is in the active force that B area acts on ring flange 6
F4, ring flange 6 are F1 in the active force that a-quadrant acts on sealing ring 7, and ring flange 6 acts on the effect of sealing ring 7 in B area
Power is F3, and F1 is equal to F2, F3 and is equal to F4, and similarly F1 ' is equal to F2 ', F3 ' and is equal to F4 '.It is false when there is gas by connecting tube 4
If the pressure for flowing through connecting tube 4 increases to FP, i.e., the active force being applied at this time on sealing ring 7 is FP, the directed force FPDirectly will
Apply a component respectively to F2 and F4, so that the active force for being applied to sealing ring 7 increases, it will be so that sealing ring 7 and ring flange 6
Sealing force it is bigger, it is achieved that the dynamic sealing of gas.With directed force FPIncrease, F2 and F4 increase, F1 and
F3 increases therewith, to strengthen sealing.
In the present embodiment, this exhaust system gas self-locking sealing structure and conventional exhaust systems gas sealing structure is close
Envelope principle is essentially different.It can directly compare and find out from principle, as shown in Figure 11, Figure 12, Figure 13, Figure 14, Figure 15,
The double containment regional structure that this exhaust system gas self-locking sealing structure is designed based on dynamic Self-locking type sealed theory, double containment area
Domain structure uses two layers of design, is arranged one layer close to 7 collar aperture of sealing ring, in addition one layer of the setting of the periphery of sealing ring 7 comes to
Two layers, sealing performance is more excellent.As shown in Figure 11, Fig. 3, the ring flange 6 in this exhaust system gas self-locking sealing structure is main
It is that step surface is left by the cooperation of two ring flanges 6 for sealing ring 7 at milling on the basis of original face-flange disk 1
One piece of groove 8, sealing ring 7 are directly installed in the groove 8 being made of two ring flanges 6.
Claims (2)
1. a kind of exhaust system gas self-locking sealing structure, including two connecting tubes (4), two connecting tubes (4) pass through each
The ring flange (6) come with is connected as one, and is provided with sealing ring (7) between two ring flanges (6), it is characterised in that:
The disk hole edge of the ring flange (6) is provided with cascaded surface, and the cascaded surface of two ring flanges (6) is opposite to surround a groove
(8), the sealing ring (7) is in the groove (8), in terms of the sealing ring (7) axial cross section, in-between main part
(71) arc-shaped, for arc projecting surface far from the groove (8) bottom surface, the end (72) at both ends is reversed with main part (71)
Arc, the protrusion of arc are tightly attached to the groove (8) bottom surface close to corner location, are sealing area B, the end (72)
Least significant end is affixed on the groove (8) side wall (61) close to corner location, is sealing area A, the sealing ring (7) passes through seal area
Domain A and sealing area B is contacted with the ring flange (6) realizes static sealing.
2. exhaust system gas self-locking sealing structure according to claim 1, which is characterized in that the sealing ring (7) is
Inside and outside double-layer structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821207234.3U CN208816912U (en) | 2018-07-27 | 2018-07-27 | A kind of exhaust system gas self-locking sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821207234.3U CN208816912U (en) | 2018-07-27 | 2018-07-27 | A kind of exhaust system gas self-locking sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208816912U true CN208816912U (en) | 2019-05-03 |
Family
ID=66271836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821207234.3U Active CN208816912U (en) | 2018-07-27 | 2018-07-27 | A kind of exhaust system gas self-locking sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208816912U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067901A (en) * | 2019-05-06 | 2019-07-30 | 盐城市圣明斯精密机械有限公司 | A kind of novel flange |
| CN113974237A (en) * | 2021-11-09 | 2022-01-28 | 张仕金 | Textile with health care function |
-
2018
- 2018-07-27 CN CN201821207234.3U patent/CN208816912U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067901A (en) * | 2019-05-06 | 2019-07-30 | 盐城市圣明斯精密机械有限公司 | A kind of novel flange |
| CN113974237A (en) * | 2021-11-09 | 2022-01-28 | 张仕金 | Textile with health care function |
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