CN105135100A - High pressure oil pipe seal fitting with long service life - Google Patents
High pressure oil pipe seal fitting with long service life Download PDFInfo
- Publication number
- CN105135100A CN105135100A CN201510597222.0A CN201510597222A CN105135100A CN 105135100 A CN105135100 A CN 105135100A CN 201510597222 A CN201510597222 A CN 201510597222A CN 105135100 A CN105135100 A CN 105135100A
- Authority
- CN
- China
- Prior art keywords
- screw
- oil pipe
- pressure oil
- cap nut
- fitting
- 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
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/102—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by material
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a high pressure oil pipe seal fitting with the long service life. The high pressure oil pipe seal fitting with the long service life comprises a hollow stopper, an external sleeving nut and a screw-in type straight fitting, wherein one end of the hollow stopper is connected with a high pressure oil pipe, and the middle of the screw-in type straight fitting is provided with an oil circuit; one end of the screw-in type straight fitting is provided with an external thread connected with the external sleeving nut, and the other end of the screw-in type straight fitting is provided with an external thread connected with external equipment; the stopper extends in the end inside the external sleeving nut and is provided with flanges in the circumferential direction, and the flanges and the inner end face of the external sleeving nut mutually extrude; the end, opposite to the screw-in type straight fitting, of the stopper is in a spherical shape, a cylindrical groove is formed in the middle of the end, connected with the external sleeving nut, of the screw-in type straight fitting, a cylindrical ceramic insert block is arranged in the cylindrical groove, and a cone-shaped groove and an oil through hole are formed in the middle of the ceramic insert block. According to the high pressure oil pipe seal fitting with the long service life, the conical surface of the ceramic insert block and the spherical surface of the stopper mutually extrude, so that sealing is achieved; the seal structure has the advantages of being resistant to abrasion, long in service life, good in seal performance, simple in structure and convenient to assembly and disassemble.
Description
Technical field
The present invention relates to a kind of oil connection, particularly relates to a kind of long-life high-pressure oil pipe SEALING FITTING.
Background technique
High-pressure oil pipe is the constituent element of high-pressure oil passage, requires that oil pipe needs bear certain oil pressure and have certain fatigue strength, ensures the seal request of pipeline.High-pressure oil pipe is generally used for the fields such as excavator, hydraulic booster, engineering mechanical hydraulic oil pipe, and in use, high-pressure oil pipe joint place easily oil accident occurs.
Existing high-pressure oil pipe SEALING FITTING, because sealing contact surface adopts same material, in the course of the work, can there is serious adhesive wear in surface of contact, thus cause surface of contact poorly sealed and cause fluid to be revealed.
Summary of the invention
The technical problem to be solved in the present invention is, provide a kind of wear-resistant, good seal performance, structure is simple, the high-pressure oil pipe SEALING FITTING of easy accessibility.
The present invention solves the problems of the technologies described above by the following technical programs:
A kind of long-life high-pressure oil pipe SEALING FITTING, comprise the hollow plug that one end connects high-pressure oil pipe, cap nut and the middle screw-in straight coupling being provided with oil circuit, one end of described screw-in straight coupling is provided with the outside thread connecting cap nut, the other end is provided with the outside thread connecting external equipment, described plug one end stretched in cap nut is circumferentially provided with the flange mutually extruded with cap nut interior edge face, one end spherically shape of the relative screw-in straight coupling of described plug, one end that described screw-in straight coupling connects cap nut is provided with cylinder shape groove between two parties, columniform ceramic tesserae is provided with in described cylinder shape groove, conical socket and fluid through hole is had in the middle part of described ceramic tesserae.
The plug sphere of this programme contact the conical surface forming sealing surface and adopt stupalith, because both of sealing surface adopt different materials, the adhesive wear between same material can not be there is in the course of the work, increase working life, improve sealing.
Further, described plug, cap nut, screw-in straight coupling material is stainless steel, to improve overall Corrosion Protection and working life.
Further, the material of described ceramic tesserae is ZrO
2, there is high hardness, high rigidity, high strength, chemical stability be good, high temperature resistant, anticorrosive, the series of advantages such as good thermal stability, good mechanical performance.
Compared to existing technology, the present invention has following beneficial effect: the present invention is by arranging the ceramic tesserae of the band conical surface and being with the plug of spherical end, and regulate the sphere of the conical surface of ceramic tesserae and plug mutually to extrude formation by coordinating between the internal thread of cap nut and the outside thread of screw-in straight coupling to be sealed and matched, due to both employing different materials of sealing surface, the adhesive wear between same material can not be there is in the course of the work, increase working life, improve sealing, structure be simple, convenient disassembly.
Accompanying drawing explanation
Fig. 1 is the perspective view of the embodiment of the present invention.
Fig. 2 is the schematic front view of the embodiment of the present invention.
Fig. 3 be in Fig. 2 A-A to cross-sectional schematic.
Shown in figure: 1-plug; 2-cap nut; 3-ceramic tesserae; 4-screw-in straight coupling.
Embodiment
Be described in further detail goal of the invention of the present invention below in conjunction with the drawings and specific embodiments, embodiment can not repeat one by one at this, but therefore embodiments of the present invention are not defined in following examples.
As shown in Figure 1 to Figure 3, a kind of long-life high-pressure oil pipe SEALING FITTING, comprise the hollow plug 1 that one end connects high-pressure oil pipe, cap nut 2 and the middle screw-in straight coupling 4 being provided with oil circuit, one end of described screw-in straight coupling 4 is provided with the outside thread connecting cap nut 2, the other end is provided with the outside thread connecting external equipment, described plug 1 one end stretched in cap nut 2 is circumferentially provided with the flange mutually extruded with cap nut 2 interior edge face, one end spherically shape of the relative screw-in straight coupling 4 of described plug 1, one end that described screw-in straight coupling 4 connects cap nut 2 is provided with cylinder shape groove between two parties, columniform ceramic tesserae 3 is provided with in described cylinder shape groove, conical socket and fluid through hole is had in the middle part of described ceramic tesserae 3.
The plug sphere of the present embodiment contact the conical surface forming sealing surface and adopt stupalith, because both of sealing surface adopt different materials, the adhesive wear between same material can not be there is in the course of the work, increase working life, improve sealing.
In the present embodiment, described plug 1, cap nut 2, screw-in straight coupling 4 material is stainless steel, to improve overall Corrosion Protection and working life.
In the present embodiment, the material of described ceramic tesserae 3 is ZrO
2, there is high hardness, high rigidity, high strength, chemical stability be good, high temperature resistant, anticorrosive, the series of advantages such as good thermal stability, good mechanical performance.
The present embodiment realizes sealing by the extruding between the conical surface of ceramic tesserae 3 and the sphere of plug 1, pottery is embedding, 3 are placed in the cylinder shape groove of screw-in straight coupling 4, plug 1 coordinates with cap nut 2, and compression degree between the two can be regulated by coordinating between the internal thread of cap nut 2 and the outside thread of screw-in straight coupling 4.
During installation, it is made to expand screw-in straight coupling 4 heating, and by ceramic tesserae 3 cooling processing, make it shrink, then ceramic tesserae 3 is pressed in the cylinder shape groove of screw-in straight coupling 4 by hydraulic pressure installation, after Assembly part returns to room temperature, just defines interference fit.
During use, plug 1 one end connects with high-pressure oil pipe, and it is inner that plug 1 is installed on cap nut 2, by screwing in the screw thread between cap nut 2 and screw-in straight coupling 4, compress plug 1, thus the sphere of plug 1 and the conical surface of ceramic tesserae 3 are compressed, form sealing surface.The other end of screw-in straight coupling 4 by outside thread and equipment connection, thus forms fluid path.
The present embodiment by arranging ceramic tesserae 3, thus avoids the adhesive wear that same material in use occurs, and increases the service life, and improves sealing, and structure is simple, convenient disassembly.
The above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all mode of executions.All any amendments done within the spirit and principles in the present invention, equivalent to replace and improvement etc., within the protection domain that all should be included in the claims in the present invention.
Claims (3)
1. a long-life high-pressure oil pipe SEALING FITTING, comprise the hollow plug (1) that one end connects high-pressure oil pipe, cap nut (2) and the middle screw-in straight coupling (4) being provided with oil circuit, one end of described screw-in straight coupling (4) is provided with the outside thread connecting cap nut (2), the other end is provided with the outside thread connecting external equipment, described plug (1) one end stretched in cap nut (2) is circumferentially provided with the flange mutually extruded with cap nut (2) interior edge face, it is characterized in that: one end spherically shape of the relative screw-in straight coupling (4) of described plug (1), one end that described screw-in straight coupling (4) connects cap nut (2) is provided with cylinder shape groove, columniform ceramic tesserae (3) is provided with in described cylinder shape groove, conical socket and fluid through hole is had in the middle part of described ceramic tesserae.
2. long-life high-pressure oil pipe SEALING FITTING according to claim 1, is characterized in that: described plug (1), cap nut (2), screw-in straight coupling (4) material are stainless steel.
3. long-life high-pressure oil pipe SEALING FITTING according to claim 1, is characterized in that: the material of described ceramic tesserae (3) is ZrO
2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510597222.0A CN105135100A (en) | 2015-09-19 | 2015-09-19 | High pressure oil pipe seal fitting with long service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510597222.0A CN105135100A (en) | 2015-09-19 | 2015-09-19 | High pressure oil pipe seal fitting with long service life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105135100A true CN105135100A (en) | 2015-12-09 |
Family
ID=54720567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510597222.0A Pending CN105135100A (en) | 2015-09-19 | 2015-09-19 | High pressure oil pipe seal fitting with long service life |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105135100A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035923A (en) * | 2017-05-02 | 2017-08-11 | 南通爱慕希机械股份有限公司 | A kind of oil connection |
| CN112065908A (en) * | 2020-08-24 | 2020-12-11 | 株洲时代瑞唯减振装备有限公司 | Self-locking anti-loosening sealing method of sealing bolt and self-locking anti-loosening sealing bolt |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4349203A (en) * | 1980-09-10 | 1982-09-14 | Heraeus Quarzschmelze Gmbh | Flange connection to connect a metallic and a glass or ceramic structural element |
| CN2101809U (en) * | 1991-07-03 | 1992-04-15 | 柳州市建筑安装工程公司 | Fast joint device for pipeline |
| CN2433492Y (en) * | 2000-06-11 | 2001-06-06 | 曲树蓁 | Pipe joint |
| CN1630566A (en) * | 2002-01-07 | 2005-06-22 | 亿万奇环球技术公司 | Protective sleeve for threaded connections for expandable liner hanger |
| CN2835762Y (en) * | 2005-10-31 | 2006-11-08 | 许智远 | Ball type joint for high pressure single flow water mist fire suppression device |
| CN204025956U (en) * | 2014-09-15 | 2014-12-17 | 朱金凤 | A kind of sound insulating seal ceramic jacket is taken over |
-
2015
- 2015-09-19 CN CN201510597222.0A patent/CN105135100A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4349203A (en) * | 1980-09-10 | 1982-09-14 | Heraeus Quarzschmelze Gmbh | Flange connection to connect a metallic and a glass or ceramic structural element |
| CN2101809U (en) * | 1991-07-03 | 1992-04-15 | 柳州市建筑安装工程公司 | Fast joint device for pipeline |
| CN2433492Y (en) * | 2000-06-11 | 2001-06-06 | 曲树蓁 | Pipe joint |
| CN1630566A (en) * | 2002-01-07 | 2005-06-22 | 亿万奇环球技术公司 | Protective sleeve for threaded connections for expandable liner hanger |
| CN2835762Y (en) * | 2005-10-31 | 2006-11-08 | 许智远 | Ball type joint for high pressure single flow water mist fire suppression device |
| CN204025956U (en) * | 2014-09-15 | 2014-12-17 | 朱金凤 | A kind of sound insulating seal ceramic jacket is taken over |
Non-Patent Citations (1)
| Title |
|---|
| 张勇等: "重复使用的航天器陶瓷加注管接头密封性能研究", 《润滑与密封》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035923A (en) * | 2017-05-02 | 2017-08-11 | 南通爱慕希机械股份有限公司 | A kind of oil connection |
| CN112065908A (en) * | 2020-08-24 | 2020-12-11 | 株洲时代瑞唯减振装备有限公司 | Self-locking anti-loosening sealing method of sealing bolt and self-locking anti-loosening sealing bolt |
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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: 20151209 |