CN203549194U - Sealing gasket for conical connecting piece of pipeline bulb - Google Patents
Sealing gasket for conical connecting piece of pipeline bulb Download PDFInfo
- Publication number
- CN203549194U CN203549194U CN201320617010.0U CN201320617010U CN203549194U CN 203549194 U CN203549194 U CN 203549194U CN 201320617010 U CN201320617010 U CN 201320617010U CN 203549194 U CN203549194 U CN 203549194U
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- sealing gasket
- bulb
- pipeline
- connecting piece
- sealing
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Abstract
The utility model relates to a sealing gasket for a conical connecting piece of a pipeline bulb and belongs to the technical field of pipeline sealing. The sealing gasket is a hollow conical stage, and the cone angle of the sealing gasket is consistent with that of the conical connecting piece; the sealing gasket is made of a metal material; the pipeline bulb is positioned in the sealing gasket, and the conical connecting piece is sleeved on the outer surface of the sealing gasket. In a compression process of the conical connecting piece of the pipeline bulb, the metal sealing gasket is subjected to plastic deformation easily, so that the middle sealing region can be properly widened, the annular leak hole occurrence possibility caused by the axial deviation can be reduced by virtue of widening of the middle sealing region, i.e., the possibility that the conical connecting piece of the bulb is subjected to leakage due to reasons such as scratching and non-centering is reduced; the sealing gasket is quite beneficial to the air-tight work of a pipeline system connected with the conical connecting piece of the bulb.
Description
Technical field
The utility model relates to a kind of pipeline bulb-conical surface link sealing gasket, belongs to line seal technical field.
Background technique
In the conduit of oil, chemical industry, Aeronautics and Astronautics and other industry connects, bulb one cone structure, as one of conventional conduit Connecting format, has good sealability.Its sealing mechanism is: metal surface exists extremely trickle pit and projection.2 metal surfaces after compression have formed the passage of micron dimension, finally formed the leak path of sealing surface, Fig. 1 has represented the cross-sectional passage form after sealing surface compact visually, has reduced sealed section aisle spare after can finding out compression, has reduced leak path.
In theory, the surface of contact that bulb and the conical surface form is an axisymmetric annular slope, and on same ring, each point stressing conditions is identical, but tangential at sphere, and each point stress is not quite similar.Take contact area mid point as true origin, and in the middle of sealing area, near contact stress is larger, changes steadily; In the edge section of contact area, contact stress declines suddenly.Face seal performance mainly relies on mid-seal area to guarantee.
In the process of installing at bulb one conical surface, due to exist sphere scratch, not to medium situation, there is gap in virtual condition and theory state that bulb is tightened, the process that bulb one conical surface compresses is state nonlinear (contact) and material nonlinearity (elasto plastic deformation) the process of depositing.Once thereby mid-seal area generation axial dipole field causes hoop leak to occur, sealability will decline to a great extent.Bulb-conical surface link scratches, to moderate defect, all can not make mid-seal area be offset, and then greatly affects bulb-conical surface link sealability.
Model utility content
The purpose of this utility model is in order to overcome defect of the prior art, proposes a kind of sealing gasket for pipeline bulb-conical surface link.
The purpose of this utility model is achieved through the following technical solutions.
A kind of sealing gasket for pipeline bulb-conical surface link of the present utility model, the frustum that sealing pad is hollow, its cone angle is consistent with the cone angle of conical surface link;
Pipeline bulb is positioned at sealing gasket, and conical surface link is enclosed within sealing gasket outside;
The material of described sealing gasket is metal, such as soft aluminium or red copper;
In the process of pipeline bulb being tightened by cap nut, sealing gasket generation plastic deformation, and get in the extremely trickle pit of pipeline bulb surface or the existence of conical surface link surface, reduced the aisle spare between pipeline bulb and conical surface link.
Beneficial effect
In the utility model, pipeline bulb-conical surface link is in compaction process, because metallic gasket easily produces plastic deformation, this can suitably widen mid-seal area, thereby widening of mid-seal area reduced the probability that its generation axial dipole field causes hoop leak to occur, reduced bulb-conical surface link owing to scratching, medium reason not produced to the probability of revealing; The airtight work of the pipe-line system that bulb-conical surface link is connected is very favourable.
Accompanying drawing explanation
Fig. 1 is the sealing state schematic diagram between pipeline bulb and conical surface seal part in prior art;
Fig. 2 is the sealing state schematic diagram between pipeline bulb and conical surface seal part in the utility model;
Fig. 3 is the annexation schematic diagram between sealing gasket of the present utility model and pipeline bulb and conical surface seal part;
Fig. 4 is the structural representation of sealing gasket of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Embodiment
As shown in Figure 4, a kind of sealing gasket for pipeline bulb-conical surface link, the frustum that sealing pad is hollow, its cone angle is consistent with the cone angle of conical surface link;
As shown in Figure 3, pipeline bulb 4 is positioned at sealing gasket 2, and conical surface link 1 is enclosed within sealing gasket 2 outsides;
The material of described sealing gasket 2 is metal, such as soft aluminium or red copper;
In the process of pipeline bulb 4 being tightened by cap nut 3, there is plastic deformation in sealing gasket 2, and get in the extremely trickle pit of pipeline bulb 4 surfaces or the 1 surface existence of conical surface link, reduced the aisle spare between pipeline bulb 4 and conical surface link 1, as shown in Figure 2;
Conical surface link 1 is pipe through hole joint, and pipeline can be welded in its one end, and the other end has outside thread and interior cone angle; The pipeline bulb 4 being nested together with cap nut 3 is also pipe through hole joint, and pipeline can be welded in its one end, and the other end is spheric structure; Conical surface link 1 outside thread, for being connected with cap nut 3 internal threads, plays the effect that two sections of pipelines are connected together;
The inner conical surface of conical surface link 1 can compress with the sphere of pipeline bulb 4 and play contact sealing effect; In the process that the sphere of the inner conical surface of conical surface link 1 and pipeline bulb 4 compresses, metallic gasket 2 produces plastic deformation, not only make the mid-seal area sealing broaden, and metallic gasket 2 compress conical surface links 1 inner conical surface and with the sphere of pipeline bulb 4 in trickle pit, reduced the aisle spare of sealed section.In addition, mid-seal area broadens and has reduced the probability to medium reason generation hoop sealing area generation leak of sealing surface scuffing, installation, has greatly improved the sealability of bulb-conical surface link.
Claims (2)
1. for a sealing gasket for pipeline bulb-conical surface link, it is characterized in that: the frustum that sealing pad is hollow, its cone angle is consistent with the cone angle of conical surface link; The material of sealing gasket is metal;
Pipeline bulb is positioned at sealing gasket, and conical surface link is enclosed within sealing gasket outside.
2. a kind of sealing gasket for pipeline bulb-conical surface link according to claim 1, is characterized in that: the material of sealing gasket is soft aluminium or red copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320617010.0U CN203549194U (en) | 2013-10-08 | 2013-10-08 | Sealing gasket for conical connecting piece of pipeline bulb |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320617010.0U CN203549194U (en) | 2013-10-08 | 2013-10-08 | Sealing gasket for conical connecting piece of pipeline bulb |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203549194U true CN203549194U (en) | 2014-04-16 |
Family
ID=50467310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320617010.0U Expired - Fee Related CN203549194U (en) | 2013-10-08 | 2013-10-08 | Sealing gasket for conical connecting piece of pipeline bulb |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203549194U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402527A (en) * | 2016-11-29 | 2017-02-15 | 沈阳黎明航空发动机(集团)有限责任公司 | Thin-wall pipeline sealing device with conical structure |
| CN106855483A (en) * | 2016-12-23 | 2017-06-16 | 中国矿业大学 | Hydrogen Vapor Pressure fatigue rupture and hydrogen-induced delayed failure sensitivity test equipment and method |
| CN112253873A (en) * | 2020-11-11 | 2021-01-22 | 上海众源燃油分配器制造有限公司 | Sealing structure for pipeline interface of R744 air-conditioning heat pump system |
-
2013
- 2013-10-08 CN CN201320617010.0U patent/CN203549194U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402527A (en) * | 2016-11-29 | 2017-02-15 | 沈阳黎明航空发动机(集团)有限责任公司 | Thin-wall pipeline sealing device with conical structure |
| CN106855483A (en) * | 2016-12-23 | 2017-06-16 | 中国矿业大学 | Hydrogen Vapor Pressure fatigue rupture and hydrogen-induced delayed failure sensitivity test equipment and method |
| CN106855483B (en) * | 2016-12-23 | 2020-02-14 | 中国矿业大学 | Hydrogen pressure fatigue fracture and hydrogen induced hysteresis fracture sensitivity test device and method |
| CN112253873A (en) * | 2020-11-11 | 2021-01-22 | 上海众源燃油分配器制造有限公司 | Sealing structure for pipeline interface of R744 air-conditioning heat pump system |
| WO2022100277A1 (en) * | 2020-11-11 | 2022-05-19 | 上海众源燃油分配器制造有限公司 | Sealing structure for pipeline connector of r744 air conditioner heat pump system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20161008 |