CN106150802A - A kind of high pressure seal structure - Google Patents
A kind of high pressure seal structure Download PDFInfo
- Publication number
- CN106150802A CN106150802A CN201610628104.6A CN201610628104A CN106150802A CN 106150802 A CN106150802 A CN 106150802A CN 201610628104 A CN201610628104 A CN 201610628104A CN 106150802 A CN106150802 A CN 106150802A
- Authority
- CN
- China
- Prior art keywords
- high pressure
- sealing member
- sealing
- chest part
- securing member
- Prior art date
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/004—Joints; Sealings
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gasket Seals (AREA)
Abstract
The invention provides a kind of high pressure seal structure, including high pressure chest part, sealing member and securing member, the bottom of described sealing member is provided with convex shoulder near the position in its sealed bottom face, and described securing member is sleeved on the outside of sealing member, and the bottom of securing member props up convex shoulder；Described securing member is connected with the female thread in the exit of high pressure chest part by its external screw thread, and sealing member is pressed on the exit of high pressure chest part, makes the conical surface formation sealing bottom the sealing surface of sealing member and the outlet of high pressure chest part；Described sealing member upper side is provided with some directions and fixes groove.The present invention fixes groove by the direction on sealing member and securing member fastens, by instrument, its direction can be fixed in fastener cycle, prevent sealing member from rotating, and then avoid the formation of abrasion, ensure that sealing reliability of structure, efficiently solve tradition conical surface high pressure seal structure and cause abrasion to cause poorly sealed problem because of the frequent dismounting that directly spins.
Description
Technical field
The invention belongs to engine fuel injection system field, especially relate to a kind of high pressure seal structure.
Background technology
For reaching the emission regulation demands of electromotor and improving economy and handling, to fuel injection system spray characteristic
Requirement more and more higher.Diesel high pressure common rail fuel system is the fuel injection system of a kind of high flexibility, the performance of its brilliance
Performance optimization for diesel engine provides huge free space, represents the development trend of diesel fuel injection system.
The demand constantly promoted for alternate-engine power density, the rail pressure of high-pressure common rail reaches more than 200MPa, constantly
Improve common rail pressure system pressure the requirement of high pressure sealing is also improved constantly.Conventional high-tension seal form has conical surface seal and plane
Seal.Conventional high-tension conical surface sealing structure is the sealing structure that high oil pipe common rail system is conventional, uses sealing adaptor head directly to revolve
Enter on high pressure chest part, but owing to part sealing structure is because of work requirements, dismounting number of times is frequent, causes the mill of sealing surface
Damage, affect high-pressure common rail structural reliability, and then affect the safety of electromotor and car load.
Summary of the invention
In view of this, it is contemplated that propose a kind of high pressure seal structure, with solve tradition conical surface high pressure seal structure because of
Dismounting causes abrasion to cause poorly sealed problem.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
A kind of high pressure seal structure, including high pressure chest part, sealing member and securing member, the bottom of described sealing member is near it
The position in sealed bottom face is provided with convex shoulder, and described securing member is sleeved on the outside of sealing member, and the bottom of securing member props up convex shoulder；
Described securing member is connected with the female thread in the exit of high pressure chest part by its external screw thread, is pressed on by sealing member
The exit of high pressure chest part, makes the conical surface bottom the sealing surface of sealing member and the outlet of high pressure chest part be formed and seals；
Described sealing member upper side is provided with some directions and fixes groove, and the position of groove is fixed higher than securing member in described direction
Top plane.
Further, the sealing surface that described sealing member contacts with high pressure chest part sealing cone is sphere.
Further, described securing member is the externally threaded outer six side's fastenings of hollow belt.
Further, the axial width size >=3mm of the convex shoulder of described sealing member.
Relative to prior art, present invention have the advantage that
(1) present invention fixes groove by the direction on sealing member and securing member fastens, and can pass through instrument in fastener cycle
Its direction is fixed, prevents sealing member from rotating, and then avoid the formation of abrasion, it is ensured that seal reliability of structure,
Efficiently solve tradition conical surface high pressure seal structure and cause abrasion to cause poorly sealed problem because of the frequent dismounting that directly spins；
(2) high pressure seal structure of the present invention is applied to high-pressure common rail oil supply system, can be installed to fuel rail, distribution
In the high voltage parts such as device, high-pressure pump, it is ensured that the security reliability of high voltage parts work.
Accompanying drawing explanation
The accompanying drawing of the part constituting the present invention is used for providing a further understanding of the present invention, and the present invention's is schematic real
Execute example and illustrate for explaining the present invention, being not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the sectional view of high pressure seal structure described in the embodiment of the present invention；
Fig. 2 is the side view of sealing member described in the embodiment of the present invention；
Fig. 3 is the side view of securing member described in the embodiment of the present invention；
Fig. 4 is the top view of securing member described in the embodiment of the present invention.
Description of reference numerals:
1: high pressure chest part 2: sealing member 3: securing member 4: groove 5 is fixed in direction: sealing surface 6: the conical surface 7: seal line
8: convex shoulder.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the present invention and the feature in embodiment can phases
Combination mutually.
Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
A kind of high pressure seal structure, as shown in Figures 1 to 4, including high pressure chest part 1, sealing member 2 and securing member 3, described close
The bottom of sealing 2 is provided with convex shoulder 8 near the position in its sealed bottom face 5, and described securing member 3 is sleeved on the outside of sealing member 2, tightly
The bottom of firmware 3 props up convex shoulder 8；Described securing member 3 is connected by the female thread of its external screw thread with the exit of high pressure chest part 1
Connect, sealing member 2 is pressed on the exit of high pressure chest part 1, make the sealing surface 5 of sealing member 2 and the cone of high pressure chest part 1 outlet
Face 6 forms seal line 7 and then reaches to seal the purpose of hydraulic oil；
For preventing the sealing surface 5 of sealing member 2 conical surface 6 with high pressure chest part 1 in fastener cycle from forming abrasion, such as Fig. 2
Shown in, described sealing member 2 upper side is provided with some directions and fixes groove 4, and during installation, described direction is fixed the position of groove 4 and is higher than
The top plane of securing member 3, can step up direction by instrument in fastener cycle and fix groove 4 and be fixed the direction of sealing member 2,
Prevent sealing member 2 from rotating, and then avoid the formation of abrasion, it is ensured that seal reliability of structure.
The sealing surface 5 that described sealing member 2 contacts with high pressure chest part 1 sealing cone is sphere, when coordinating with the conical surface 6
Even if there being small angle inclination, still can ensure that sealing property.
As shown in Figure 4, described securing member 3 is the externally threaded outer six side's fastenings of hollow belt, and convenient blessing fastens.
The gauge of the convex shoulder 8 of described sealing member 2 should ensure that >=3mm, prevents convex shoulder 8 due to suffered during assembling
Pressure is excessive and causes deformation.
During use:
First being put into by sealing member 2 in the opening of high pressure chest part 1, securing member 3 makes active force pass to seal by screw thread
The convex shoulder of part 28, and then make the sealing surface 5 of sealing member 2 form seal line 7 with the conical surface 6 of high pressure chest part 1, reach to seal mesh
's.Snap in the direction of sealing member 2 by spanner or specific purpose tool during whole and fix groove 4, it is ensured that sealing member 2 sealing surface 5 with
The conical surface 6 of high pressure chest part 1 does not has too much fretting wear, it is ensured that sealing reliability.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (4)
1. a high pressure seal structure, it is characterised in that: include high pressure chest part (1), sealing member (2) and securing member (3), described
The bottom of sealing member (2) is provided with convex shoulder (8) near the position in its sealed bottom face (5), and described securing member (3) is sleeved on sealing member
(2) outside, the bottom of securing member (3) props up convex shoulder (8)；
Described securing member (3) is connected with the female thread in the exit of high pressure chest part (1), by sealing member (2) by its external screw thread
It is pressed on the exit of high pressure chest part (1), makes the cone bottom the sealing surface (5) of sealing member (2) and high pressure chest part (1) outlet
Face (6) is formed and seals；
Described sealing member (2) upper side is provided with some directions and fixes groove (4), and the position of groove (4) is fixed higher than tight in described direction
The top plane of firmware (3).
High pressure seal structure the most according to claim 1, it is characterised in that: described sealing member (2) and high pressure chest part (1)
The sealing surface (5) that sealing cone contacts is sphere.
High pressure seal structure the most according to claim 1, it is characterised in that: described securing member (3) is outside a hollow belt
Outer six side's fastenings of screw thread.
High pressure seal structure the most according to claim 1, it is characterised in that: the convex shoulder (8) of described sealing member (2) axial
Gauge >=3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610628104.6A CN106150802A (en) | 2016-07-29 | 2016-07-29 | A kind of high pressure seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610628104.6A CN106150802A (en) | 2016-07-29 | 2016-07-29 | A kind of high pressure seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106150802A true CN106150802A (en) | 2016-11-23 |
Family
ID=57328926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610628104.6A Pending CN106150802A (en) | 2016-07-29 | 2016-07-29 | A kind of high pressure seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106150802A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1473984A (en) * | 1974-09-26 | 1977-05-18 | Nova Werke Ag | High pressure pipe unions |
| US4705306A (en) * | 1983-05-09 | 1987-11-10 | Jurgen Guido | Injection line connection |
| JPH03177693A (en) * | 1989-09-27 | 1991-08-01 | Usui Internatl Ind Co Ltd | Branch connected body connecting structure in high pressure fuel rail |
| EP1167752A2 (en) * | 2000-06-22 | 2002-01-02 | Detroit Diesel Corporation | Anti-rotation mechanism for a high pressure supply pipe in a common rail fuel injection system |
| JP2005002806A (en) * | 2003-06-09 | 2005-01-06 | Usui Kokusai Sangyo Kaisha Ltd | Joint structure of high pressure fuel injection pipe |
| CN101463781A (en) * | 2007-12-17 | 2009-06-24 | 臼井国际产业株式会社 | Connection head structure of high pressure fuel injection tube |
| CN102095031A (en) * | 2009-11-20 | 2011-06-15 | 三樱工业株式会社 | Pipe fastening structure |
| CN202532055U (en) * | 2012-05-03 | 2012-11-14 | 东风汽车有限公司 | Spherical pier head structure of high-pressure oil pipe |
| CN202708381U (en) * | 2012-07-18 | 2013-01-30 | 东风（十堰）汽车管业有限公司 | End structure of high-pressure oil pipe |
| CN204372396U (en) * | 2015-01-06 | 2015-06-03 | 湖北三江航天红阳机电有限公司 | A kind of doubly-closed tube pipeline connector |
-
2016
- 2016-07-29 CN CN201610628104.6A patent/CN106150802A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1473984A (en) * | 1974-09-26 | 1977-05-18 | Nova Werke Ag | High pressure pipe unions |
| US4705306A (en) * | 1983-05-09 | 1987-11-10 | Jurgen Guido | Injection line connection |
| JPH03177693A (en) * | 1989-09-27 | 1991-08-01 | Usui Internatl Ind Co Ltd | Branch connected body connecting structure in high pressure fuel rail |
| EP1167752A2 (en) * | 2000-06-22 | 2002-01-02 | Detroit Diesel Corporation | Anti-rotation mechanism for a high pressure supply pipe in a common rail fuel injection system |
| JP2005002806A (en) * | 2003-06-09 | 2005-01-06 | Usui Kokusai Sangyo Kaisha Ltd | Joint structure of high pressure fuel injection pipe |
| CN101463781A (en) * | 2007-12-17 | 2009-06-24 | 臼井国际产业株式会社 | Connection head structure of high pressure fuel injection tube |
| CN102095031A (en) * | 2009-11-20 | 2011-06-15 | 三樱工业株式会社 | Pipe fastening structure |
| CN202532055U (en) * | 2012-05-03 | 2012-11-14 | 东风汽车有限公司 | Spherical pier head structure of high-pressure oil pipe |
| CN202708381U (en) * | 2012-07-18 | 2013-01-30 | 东风（十堰）汽车管业有限公司 | End structure of high-pressure oil pipe |
| CN204372396U (en) * | 2015-01-06 | 2015-06-03 | 湖北三江航天红阳机电有限公司 | A kind of doubly-closed tube pipeline connector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161123 |
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| RJ01 | Rejection of invention patent application after publication |