CN103953731A - End-face labyrinth static sealing structure - Google Patents
End-face labyrinth static sealing structure Download PDFInfo
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- CN103953731A CN103953731A CN201410172358.2A CN201410172358A CN103953731A CN 103953731 A CN103953731 A CN 103953731A CN 201410172358 A CN201410172358 A CN 201410172358A CN 103953731 A CN103953731 A CN 103953731A
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- Prior art keywords
- plane
- sealing
- ring packing
- slope
- holes
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Abstract
The invention relates to an end-face labyrinth static sealing structure. A sealing pad is arranged between a sealing part with a hole piece and a sealing part for a shaft-shaped piece, wherein the sealing part with the hole piece comprises an inner annular sealing slope connected with the top end part of a mounting hole; a large opening of the inner annular sealing slope is upward, and a small opening of the inner annular sealing slope is downward; the opening edge part of the large opening of the inner annular sealing slope is connected with a lower annular sealing plane; the sealing part for the shaft-shaped piece comprises an upper annular sealing plane arranged on the shaft-shaped piece; the inner circular part of the upper sealing plane is connected with an outer annular sealing slope; a large opening of the outer annular sealing slope is upward, and a small opening of the outer annular sealing slope is downward; an annular radial bulge is arranged at the middle part of the outer annular sealing slope; the outer annular sealing slope is matched with the inner annular sealing slope; the upper sealing plane is matched with the lower sealing plane. The end-face labyrinth static sealing structure is good in sealing effect, can effectively prevent structural seepage and is high in reliability.
Description
Technical field
The present invention relates to a kind of quiet seal structure in labyrinth of mechanical end face, especially a kind of end face labyrinth static seal structure.
Background technique
Existing mechanical end face static seal adopts plane sealing more, and it is simple in structure, can guarantee to use under general normality operating mode, but in the higher occasion of usage requirement, be difficult to meet usage requirement.As the sealing of natural gas engine cylinder head spark plug position, in assembly process, need to carry out leak test, use the disposable up-to-standard rate of plane sealing low, and in endurance test, road examination and using process, Seepage easily occurs.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of rational in infrastructure, sealing reliability is high and Applicable scope is wider end face labyrinth static seal structure is provided.
According to technological scheme provided by the invention, described end face labyrinth static seal structure, comprises with holes, axle shape part and sealing gasket, on holes, is provided with mounting hole, between the sealed department of with holes and the sealed department of axle shape part, is provided with sealing gasket; The sealed department of described with holes is included in the interior inclined-plane of ring packing of the tip portion connection of mounting hole, in ring packing, the large mouth on inclined-plane upward, the little mouth down on inclined-plane in ring packing, in ring packing, the large mouthful of opening's edge portion on inclined-plane is connected with ringwise lower seal plane;
The sealed department of described axle shape part is included in the ringwise upper sealing plane arranging on axle shape part, inner circular part at upper sealing plane is connected with inclined-plane outside ring packing, large mouthful of the outer inclined-plane of ring packing upward, the little mouth down on the outer inclined-plane of ring packing, outside ring packing, the middle part on inclined-plane has annular radial projection;
And the outer inclined-plane of ring packing coordinates with inclined-plane in ring packing, and upper sealing plane coordinates with lower seal plane.
In described ring packing, inclined-plane is inner conical surface.
Described annular radial projection is arc surface projection.
Described sealing gasket is made by plastic material.
Described with holes is plate part, shaft-like part or block part.
Good sealing effect of the present invention, can effectively prevent structural leakage, improves disposable leak detection up-to-standard rate; Good reliability is difficult for producing and lost efficacy, leaks in long-term use, avoids because seal failure causes a series of infringement to machinery.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1.
Fig. 2 is the structural representation of the embodiment of the present invention 2.
Fig. 3 is the assembly relation schematic diagram of embodiment 1 before labyrinth seal forms.
Fig. 4 is the assembly relation schematic diagram of embodiment 2 before labyrinth seal forms.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
This end face labyrinth static seal structure, comprises with holes 1, axle shape part 2 and sealing gasket 3, is provided with mounting hole 1.3 on holes 1, between the sealed department of with holes 1 and the sealed department of axle shape part 2, is provided with sealing gasket 3; The sealed department of described with holes 1 is included in the interior inclined-plane 1.1 of ring packing of the tip portion connection of mounting hole 1.3, in ring packing, the large mouth on inclined-plane 1.1 upward, the little mouth down on inclined-plane 1.1 in ring packing, in ring packing, the large mouthful of opening's edge portion on inclined-plane 1.1 is connected with ringwise lower seal plane 1.2;
The sealed department of described axle shape part 2 is included in the ringwise upper sealing plane 2.2 arranging on axle shape part 2, inner circular part at upper sealing plane 2.2 is connected with inclined-plane 2.1 outside ring packing, large mouthful of the outer inclined-plane 2.1 of ring packing upward, the little mouth down on the outer inclined-plane 2.1 of ring packing, outside ring packing, the middle part on inclined-plane 2.1 has annular radial projection 2.3;
And the outer inclined-plane 2.1 of ring packing coordinates with inclined-plane 1.1 in ring packing, and upper sealing plane 2.2 coordinates with lower seal plane 1.2.
In described ring packing, inclined-plane 1.1 is inner conical surface.
Described annular radial projection 2.3 is arc surface projection.
Described sealing gasket 3 is made by soft material, and it generally can adopt the softer materials such as red copper, brass or aluminium to make.
Described with holes 1 is plate part, shaft-like part or block part.
Embodiment 1
As shown in Figures 1 and 3, when assembling, under the threaded tightening force effect that with holes 1 and axle shape part are 2, the annular radial projection 2.3 of axle shape part 2 presses to the center portion material of sealing gasket 3 on inclined-plane 1.1 in the ring packing of with holes 1, sealing gasket 3 is by plastic deformation, the outer inclined-plane 2.1 of ring packing of its upside and axle shape part 2 and upper sealing plane 2.2 laminatings, inclined-plane 1.1 and 1.2 laminatings of lower seal plane in its downside and with holes 's 1 ring packing, thus the simple and easy labyrinth static seal of " plane+male and fomale(M&F) " formed.
In ring packing, the shape on inclined-plane 1.1 can be inner conical surface, can be also the depression of other shape; The shape on the outer inclined-plane 2.1 of ring packing can be protruding arc surface, can be also the crowning of other shape.
Embodiment 2
As shown in Fig. 2 and Fig. 4, it is the malformation of the above embodiment of the present invention, and its main distinction is that with holes 1 and 2 nothings of axle shape part screw thread section, need to have under External Force Acting and could form effective simple and easy labyrinth static seal.
Principle of the present invention is:
With holes 1 is lower seal plane 1.2 in sealing position outer rim, its inner rim is inclined-plane 1.1 in ring packing, the axle shape part 2 matching is with it sealing plane 2.2 on sealing position outer rim is, its inner rim is the outer inclined-plane 2.1 of ring packing, and outside ring packing, the middle part on inclined-plane 2.1 has annular radial projection 2.3; During assembling, the outer inclined-plane 2.1 of the ring packing of axle shape part 2 and annular radial projection 2.3 by holes 1 with 2 two parts of axle shape part between the material in sealing gasket 3 center portions to press to inclined-plane 1.1(in the ring packing of with holes 1 be central concave position), thereby the simple and easy labyrinth static seal of formation " plane+male and fomale(M&F) ".
The outer rim of sealing gasket 3 is by with holes 1 and 2 compactings of axle shape part, the center portion of sealing gasket 3 be extruded there is plastic deformation and with the ring packing of with holes 1 in inclined-plane 1.1(be concave surface) and the outer inclined-plane 2.1 of ring packing of axle shape part 2 be convex surface with annular radial projection 2.3() laminating, thereby form the simple and easy labyrinth static seal of " plane+male and fomale(M&F) ".
The above embodiment is only the preferred embodiment for absolutely proving that the present invention lifts, and protection scope of the present invention is not limited to this.Being equal to that those skilled in the art do on basis of the present invention substitutes or conversion, all within protection scope of the present invention.Protection scope of the present invention is as the criterion with claims.
Claims (5)
1. an end face labyrinth static seal structure, comprise with holes (1), axle shape part (2) and sealing gasket (3), on with holes (1), be provided with mounting hole (1.3), between the sealed department of with holes (1) and the sealed department of axle shape part (2), be provided with sealing gasket (3); It is characterized in that: the sealed department of described with holes (1) is included in the interior inclined-plane (1.1) of ring packing of the tip portion connection of mounting hole (1.3), in ring packing, the large mouth on inclined-plane (1.1) upward, the little mouth down on inclined-plane (1.1) in ring packing, the large mouthful of opening's edge portion of inclined-plane in ring packing (1.1) is connected with ringwise lower seal plane (1.2);
The sealed department of described axle shape part (2) is included in the upper ringwise upper sealing plane (2.2) arranging of axle shape part (2), inner circular part at upper sealing plane (2.2) is connected with inclined-plane outside ring packing (2.1), large mouthful of the outer inclined-plane (2.1) of ring packing upward, the little mouth down on the outer inclined-plane (2.1) of ring packing, the middle part of inclined-plane outside ring packing (2.1) has annular radial projection (2.3);
And the outer inclined-plane (2.1) of ring packing coordinates with inclined-plane (1.1) in ring packing, and upper sealing plane (2.2) coordinates with lower seal plane (1.2).
2. end face as claimed in claim 1 labyrinth static seal structure, is characterized in that: in described ring packing, inclined-plane (1.1) is inner conical surface.
3. end face as claimed in claim 1 labyrinth static seal structure, is characterized in that: described annular radial projection (2.3) is arc surface projection.
4. end face as claimed in claim 1 labyrinth static seal structure, is characterized in that: described sealing gasket (3) is made by plastic material.
5. end face as claimed in claim 1 labyrinth static seal structure, is characterized in that: described with holes (1) is plate part, shaft-like part or block part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410172358.2A CN103953731B (en) | 2014-04-26 | 2014-04-26 | End face labyrinth static seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410172358.2A CN103953731B (en) | 2014-04-26 | 2014-04-26 | End face labyrinth static seal structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103953731A true CN103953731A (en) | 2014-07-30 |
| CN103953731B CN103953731B (en) | 2016-03-16 |
Family
ID=51331046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410172358.2A Expired - Fee Related CN103953731B (en) | 2014-04-26 | 2014-04-26 | End face labyrinth static seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103953731B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1282611A (en) * | 1969-10-25 | 1972-07-19 | Rolls Royce | Improvements in or relating to sealing arrangement |
| CN86104543A (en) * | 1985-07-26 | 1987-04-01 | A·W·彻斯特顿公司 | The labyrinth ring seals that has housing mounting means |
| JPH09119800A (en) * | 1995-10-26 | 1997-05-06 | Mitsubishi Heavy Ind Ltd | Tube separating apparatus |
| CN201112257Y (en) * | 2007-08-21 | 2008-09-10 | 北京合纵科技股份有限公司 | SF6 load-break switch operating shaft motive seal component |
| CN201348041Y (en) * | 2008-12-22 | 2009-11-18 | 奇瑞汽车股份有限公司 | Wheel hub bearing dust-proof sealing device |
| CN202612191U (en) * | 2012-05-17 | 2012-12-19 | 安徽三联泵业股份有限公司 | Centrifugal pump packing sealing structure |
-
2014
- 2014-04-26 CN CN201410172358.2A patent/CN103953731B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1282611A (en) * | 1969-10-25 | 1972-07-19 | Rolls Royce | Improvements in or relating to sealing arrangement |
| CN86104543A (en) * | 1985-07-26 | 1987-04-01 | A·W·彻斯特顿公司 | The labyrinth ring seals that has housing mounting means |
| JPH09119800A (en) * | 1995-10-26 | 1997-05-06 | Mitsubishi Heavy Ind Ltd | Tube separating apparatus |
| CN201112257Y (en) * | 2007-08-21 | 2008-09-10 | 北京合纵科技股份有限公司 | SF6 load-break switch operating shaft motive seal component |
| CN201348041Y (en) * | 2008-12-22 | 2009-11-18 | 奇瑞汽车股份有限公司 | Wheel hub bearing dust-proof sealing device |
| CN202612191U (en) * | 2012-05-17 | 2012-12-19 | 安徽三联泵业股份有限公司 | Centrifugal pump packing sealing structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103953731B (en) | 2016-03-16 |
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Granted publication date: 20160316 Termination date: 20200426 |
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| CF01 | Termination of patent right due to non-payment of annual fee |