CN204986094U - Long -life high pressure fuel pipe sealing joint - Google Patents
Long -life high pressure fuel pipe sealing joint Download PDFInfo
- Publication number
- CN204986094U CN204986094U CN201520725775.5U CN201520725775U CN204986094U CN 204986094 U CN204986094 U CN 204986094U CN 201520725775 U CN201520725775 U CN 201520725775U CN 204986094 U CN204986094 U CN 204986094U
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- cap nut
- screw
- straight coupling
- cap
- long
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Abstract
The utility model discloses a long -life high pressure fuel pipe sealing joint, the cavity end cap, cap nut and the middle screw in formula straight joint who is equipped with the oil circuit that connect high pressure fuel pipe including one end, screw in formula straight joint's one end is provided with the external screw thread of connecting cap nut, and the other end is provided with the external screw thread of connecting external device, the end cap stretch into in the cap nut one end along circumference be provided with with each other extruded flange of the inner facial features of cap nut, the relative screw in formula straight joint's of end cap one end is the sphere form, the one end that screw in formula straight joint connects cap nut is provided with cylindrical recess between two parties, be provided with columniform pottery abaculus in the cylindrical recess, open at pottery abaculus middle part has tapered groove and fluid through -hole, the utility model discloses extrude each other between the sphere of the conical surface and the end cap of pottery abaculus, realize sealing, this seal structure have stand wear and tear, longe -lived, sealing performance is good, simple structure, easy dismounting's advantage.
Description
Technical field
The utility model 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.
Model utility content
The technical problems to be solved in the utility model is, provide a kind of wear-resistant, good seal performance, structure is simple, the high-pressure oil pipe SEALING FITTING of easy accessibility.
The utility model 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 utility model has following beneficial effect: the utility model 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 utility model embodiment.
Fig. 2 is the schematic front view of the utility model embodiment.
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 model utility object of the present utility model below in conjunction with the drawings and specific embodiments, embodiment can not repeat one by one at this, but therefore mode of execution of the present utility model is 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.
Above-described embodiment of the present utility model is only for the utility model example is clearly described, and is not the restriction to mode of execution of the present utility model.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 do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., within the protection domain that all should be included in the utility model claim.
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 |
|---|---|---|---|
| CN201520725775.5U CN204986094U (en) | 2015-09-19 | 2015-09-19 | Long -life high pressure fuel pipe sealing joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520725775.5U CN204986094U (en) | 2015-09-19 | 2015-09-19 | Long -life high pressure fuel pipe sealing joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204986094U true CN204986094U (en) | 2016-01-20 |
Family
ID=55120462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520725775.5U Expired - Fee Related CN204986094U (en) | 2015-09-19 | 2015-09-19 | Long -life high pressure fuel pipe sealing joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204986094U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110836266A (en) * | 2019-11-25 | 2020-02-25 | 沈阳航天新光集团有限公司 | High-pressure double-sealing device and using method |
| CN112469881A (en) * | 2018-05-25 | 2021-03-09 | 瓦卢瑞克石油天然气法国有限公司 | Threaded tubular connector for casing |
| CN113732958A (en) * | 2021-09-01 | 2021-12-03 | 沪东中华造船(集团)有限公司 | Segmented pre-assembled pipe seal cleaning and protecting device and using method thereof |
-
2015
- 2015-09-19 CN CN201520725775.5U patent/CN204986094U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112469881A (en) * | 2018-05-25 | 2021-03-09 | 瓦卢瑞克石油天然气法国有限公司 | Threaded tubular connector for casing |
| CN112469881B (en) * | 2018-05-25 | 2023-11-03 | 瓦卢瑞克石油天然气法国有限公司 | Threaded tubular connector for a sleeve |
| CN110836266A (en) * | 2019-11-25 | 2020-02-25 | 沈阳航天新光集团有限公司 | High-pressure double-sealing device and using method |
| CN113732958A (en) * | 2021-09-01 | 2021-12-03 | 沪东中华造船(集团)有限公司 | Segmented pre-assembled pipe seal cleaning and protecting device and using method thereof |
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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 |
Granted publication date: 20160120 Termination date: 20180919 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |