CN104405550A - High-pressure oil way connector - Google Patents
High-pressure oil way connector Download PDFInfo
- Publication number
- CN104405550A CN104405550A CN201410550351.XA CN201410550351A CN104405550A CN 104405550 A CN104405550 A CN 104405550A CN 201410550351 A CN201410550351 A CN 201410550351A CN 104405550 A CN104405550 A CN 104405550A
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- CN
- China
- Prior art keywords
- pressure oil
- sealing
- conversion adapter
- plane
- oil pipe
- 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.)
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Abstract
The invention provides a high-pressure oil way connector. The high-pressure oil way connector comprises a connector body, wherein one end of the connector body is a plane sealing joint connected with a plane sealing surface, and the other end is a high-pressure oil pipe sealing joint connected with a high-pressure oil pipe; a penetrating hollow oil way is formed between the plane sealing joint and the high-pressure oil pipe sealing joint; the sealing surface of the plane sealing joint is a ring small plane; a counter bore is formed in the middle of the sealing surface; and multiple sections of chamfering angles gradually decreased from outside to inside are arranged at the outer edge of the ring small plane. The high-pressure oil way connector has the following advantages and beneficial effects: the ring small plane is formed through setting the counter bore; the finished surface area is reduced by the ring small plane; the machining is simple; and the pretightening force in the mounting tightening process is reduced to achieve the sealing reliability; and the transitional chamfering angles gradually changed from 45 degrees to 15 degrees are arranged at the outer edge of the sealing surface for reducing the stress concentration.
Description
Technical field
The invention belongs to diesel engine high-pressure liquid fuel technology, especially relate to and a kind ofly seal high-pressure oil passage conversion adapter that is reliable, highly versatile.
Background technique
The fuel pressure of diesel fuel system can reach more than 100MPa, and along with fuel consumption and emission requires more and more stricter, fuel pressure is even more than 300MPa.
In prior art, oil circuit conversion adapter is under so large pressure, and it is difficult to ensure its sealing problem, and be difficult to take into account the problem such as sealing reliability and processing degree of difficulty, because sealing surface needs to carry out fine finishing and certain surface treatment procedure, processing is compared wastes time and energy.
Summary of the invention
It is reliable that the problem to be solved in the present invention is to provide a kind of sealing, and processing is simple, the high-pressure oil passage conversion adapter of highly versatile.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of high-pressure oil passage conversion adapter, comprise conversion adapter body, described conversion adapter body one end is the flat seal joint connecting plane sealing face, the other end is the high-pressure oil pipe SEALING FITTING connecting high-pressure oil pipe, be through hollow oil duct between flat seal joint and high-pressure oil pipe SEALING FITTING, the outer side surface medium position of conversion adapter body is provided with installation card-tight part; The sealing surface of described flat seal joint is annulus facet, is provided with a counterbore in the middle part of sealing surface, and the faceted outer rim place of annulus is provided with the chamfering that multistage ecto-entad diminishes gradually.
Further, the faceted outer rim place of described annulus is provided with two sections of chamferings, and outer chamfered is 45 degree, and inner chamfering is 15 degree.
Further, a 8mm less of cylndrical surface diameter outside flat seal joint joint is provided with in the middle part of described sealing surface, the counterbore of dark 3mm.
The advantage that the present invention has and good effect are:
Sealing surface due to flat seal joint needs fine finishing and certain surface treatment procedure, form annulus facet by arranging counterbore, annulus facet reduces accurately machined surface area, and processing is simple, reduce the pretightening force of installing rundown process, sealing is reliable simultaneously;
Sealing surface outer rim place arrange 45 ° to the 15 ° transition chamferings gradually changed can reduce stress concentrate; .
And structure is simple, highly versatile.
Accompanying drawing explanation
Fig. 1 is sectional view of the present invention;
Fig. 2 is the partial enlarged drawing at A place in Fig. 1 of the present invention;
Fig. 3 is worm's eye view of the present invention;
Fig. 4 is the erection drawing of the present invention when using.
In figure:
1-flat seal joint 2-high-pressure oil pipe SEALING FITTING 3-installs card-tight part 4-hollow oil duct 5-counterbore
Embodiment
Below in conjunction with accompanying drawing, specific embodiments of the invention are elaborated.
A kind of high-pressure oil passage conversion adapter, as shown in Figures 1 to 3, comprise conversion adapter body, described conversion adapter body one end is the flat seal joint 1 connecting plane sealing face, the other end is the high-pressure oil pipe SEALING FITTING 2 connecting high-pressure oil pipe, be through hollow oil duct 4 between flat seal joint 1 and high-pressure oil pipe SEALING FITTING 2, the outer side surface medium position of conversion adapter body is provided with installs card-tight part 3;
As shown in Figure 3, described installation card-tight part 3 is hexagonal column body structure;
Described high-pressure oil pipe SEALING FITTING 2 is carry out by GB the horn shape joint that designs;
The sealing surface of described flat seal joint 1 is annulus facet, is provided with a counterbore 5, so both reduced accurately machined surface area in the middle part of sealing surface, and processing is simple, reduces the pretightening force of installing rundown process simultaneously, seals more reliable; The faceted outer rim place of annulus is provided with the chamfering that multistage ecto-entad diminishes gradually, realizes reducing the concentrated effect of stress.
Described in a specific embodiment of the present invention, the faceted outer rim place of annulus is provided with two sections of chamferings, and as shown in Figure 2, outer chamfered is 45 degree, and inner chamfering is 15 degree, and the transition chamfering gradually changed from 45 ° to 15 ° can reduce stress and concentrate, and effect is optimum.
A 8mm less of cylndrical surface diameter outside flat seal joint 1 joint is provided with in the middle part of sealing surface described in a specific embodiment of the present invention, the counterbore 5 of dark 3mm, realize difference between the faceted outside diameter of annulus and interior circular diameter at about 8mm, so both reduce accurately machined surface area maximum, take into account again sealing more reliably simultaneously.
During use, the flat seal joint 1 of described high-pressure oil passage conversion adapter can be pressed on some plane sealing faces of oil-fired system as shown in Figure 4, can use copper backing in the middle of plane sealing face; The high-pressure oil pipe SEALING FITTING 2 of the other end can the high-pressure oil pipe of installation code.
Above embodiments of the invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.
Claims (3)
1. a high-pressure oil passage conversion adapter, comprise conversion adapter body, described conversion adapter body one end is the flat seal joint (1) connecting plane sealing face, the other end is the high-pressure oil pipe SEALING FITTING (2) connecting high-pressure oil pipe, be through hollow oil duct (4) between flat seal joint (1) and high-pressure oil pipe SEALING FITTING (2), the outer side surface medium position of conversion adapter body is provided with installs card-tight part (3); It is characterized in that:
The sealing surface of described flat seal joint (1) is annulus facet, is provided with a counterbore (5) in the middle part of sealing surface, and the faceted outer rim place of annulus is provided with the chamfering that multistage ecto-entad diminishes gradually.
2. high-pressure oil passage conversion adapter according to claim 1, is characterized in that: the faceted outer rim place of described annulus is provided with two sections of chamferings, and outer chamfered is 45 degree, and inner chamfering is 15 degree.
3. high-pressure oil passage conversion adapter according to claim 1 and 2, is characterized in that: the counterbore (5) being provided with 8mm, a dark 3mm less of cylndrical surface diameter outside flat seal joint (1) joint in the middle part of described sealing surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410550351.XA CN104405550A (en) | 2014-10-16 | 2014-10-16 | High-pressure oil way connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410550351.XA CN104405550A (en) | 2014-10-16 | 2014-10-16 | High-pressure oil way connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104405550A true CN104405550A (en) | 2015-03-11 |
Family
ID=52643204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410550351.XA Pending CN104405550A (en) | 2014-10-16 | 2014-10-16 | High-pressure oil way connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104405550A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107407241A (en) * | 2015-04-27 | 2017-11-28 | 臼井国际产业株式会社 | The end seals construction of gasoline direct injection engine fuel rail |
| CN105756833B (en) * | 2016-03-24 | 2018-08-21 | 中国北方发动机研究所(天津) | A kind of switching device between high-pressure oil pipe and fuel injector |
-
2014
- 2014-10-16 CN CN201410550351.XA patent/CN104405550A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107407241A (en) * | 2015-04-27 | 2017-11-28 | 臼井国际产业株式会社 | The end seals construction of gasoline direct injection engine fuel rail |
| CN105756833B (en) * | 2016-03-24 | 2018-08-21 | 中国北方发动机研究所(天津) | A kind of switching device between high-pressure oil pipe and fuel injector |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150311 |