CN105221865A - A kind of aircraft oxygen system sealing linkage structure - Google Patents
A kind of aircraft oxygen system sealing linkage structure Download PDFInfo
- Publication number
- CN105221865A CN105221865A CN201410265037.7A CN201410265037A CN105221865A CN 105221865 A CN105221865 A CN 105221865A CN 201410265037 A CN201410265037 A CN 201410265037A CN 105221865 A CN105221865 A CN 105221865A
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- CN
- China
- Prior art keywords
- cap nut
- flat ozzle
- oxygen system
- conduit
- aircraft
- 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 belongs to technical field of aerospace, relate to a kind of aircraft oxygen system sealing interconnection technique.A kind of aircraft oxygen system sealing linkage structure, it is characterized in that, comprise left conduit (1), left flat ozzle (2), left cap nut (3), straight coupling (4), right conduit (5), right flat ozzle (6) and right cap nut (7); The welding of left conduit (1) termination is enclosed within left flat ozzle (2), left flat ozzle (2) is spirally connected by left cap nut (3) and straight coupling (4), the welding of right conduit (5) termination is enclosed within right flat ozzle (6), and right flat ozzle (6) is spirally connected by right cap nut (7) and straight coupling (4).The invention provides a kind of aircraft oxygen system novel sealing connection structure, solve the leakage problem of pressure duct, substantially increase the tightness of oxygen system, ensure that the flight safety of aircraft.
Description
Technical field
The invention belongs to technical field of aerospace, relate to a kind of aircraft oxygen system sealing interconnection technique.
Background technique
In aircraft oxygen system, low pressure line adopts navigation mark part as pipeline connection end, when two tubes connection, directly conduit and flat ozzle, cap nut is connected into pipe joint, then connects and composes complete sealing pipeline with straight coupling.Because of the narrow limitation of navigation mark part process and design, when this type of pipe joint is used for the connection of high-pressure conduit, cause because oxygen pressure is too high pipe joint place to seal completely, there is gas leak phenomenon, by oxygen demand, certain adverse effect is created to the flight safety of aircraft and occupant.Therefore, for solving the bad problem of navigation mark part Placement sealing, new research and exploration have been carried out to aircraft oxygen system sealing interconnection technique.
Summary of the invention
The object of the invention is: study a kind of oxygen system and to be tightly connected technology, strengthen the sealing of tubes connection, solve oxygen catheter leakage problem.
Technical solution of the present invention is:
As shown in Figure 1, a kind of aircraft oxygen system sealing linkage structure, comprises left conduit 1, left flat ozzle 2, left cap nut 3, straight coupling 4, right conduit 5, right flat ozzle 6 and right cap nut 7; The welding of left conduit 1 termination is enclosed within left flat ozzle 2, and left flat ozzle 2 is spirally connected with straight coupling 4 by left cap nut 3, and the welding of right conduit 5 termination is enclosed within right flat ozzle 6, and right flat ozzle 6 is spirally connected with straight coupling 4 by right cap nut 7.
The two ends of safety fuse cutout 8 are connected with left cap nut 3 and right cap nut 7 respectively.
The invention has the beneficial effects as follows: the invention provides a kind of aircraft oxygen system novel sealing connection structure, solve the leakage problem of pressure duct, substantially increase the tightness of oxygen system, ensure that the flight safety of aircraft.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of aircraft oxygen system of the present invention novel sealing connection structure.
Fig. 2 is the sectional drawing of a kind of aircraft oxygen system of the present invention novel sealing connection structure.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail:
As shown in Figure 1, a kind of oxygen system of the present invention is tightly connected technology.Weld with left conduit 1 after left flat ozzle 2 puts left cap nut 3 and form complete pipe joint.In like manner, right conduit 5, right flat ozzle 6 and right cap nut 7 also form pipe joint by this type of mode.Two pipe joints assemble with straight coupling 4 respectively, stamp insurance 8 after airtight inspection, form complete sealing pipeline and connect.
The left conduit 1 of the present invention's design and the Connecting format of the flat ozzle 2 in a left side as shown in Figure 1, adopt argon arc welding (by 10AS315) to be welded with the flat ozzle 2 in a left side by left conduit 1, eliminate the possibility of leaking gas between the flat ozzle 2 of left conduit 1 and a left side.
The flat ozzle 2 in a left side of the present invention's design shows, selects the manufacture of 1Cr18Ni9Ti stainless steel material.Relative to navigation mark part, left flat ozzle 2 adds a boss, requires to ensure that the angle of boss conical surface is 90 ° and its surface roughness is less than 1.6;
The left cap nut 3 of the present invention's design, selects the manufacture of 1Cr18Ni9Ti stainless steel material.In order to coordinate more close and firm with straight coupling 4, improve the tolerance (by GB7307-2001) of its internal thread.
The straight coupling 4 of the present invention's design, selects the manufacture of 1Cr18Ni9Ti stainless steel material.In order to form air-tight fit with the boss of the flat ozzle 2 in a left side, straight coupling 4 two ends respectively correspondingly increase a conical bore, and require to ensure that the angle of conical bore is 90 ° and its surface roughness is less than 1.6, improve the externally threaded tolerance in straight coupling two ends (by GB7307-2001) in addition.
Owing to eliminating the possibility of leaking gas between conduit and flat ozzle, improve the tolerance be threaded between cap nut with straight coupling, the cooperation secure rigid more between each part in joint.In addition, the boss of flat ozzle and the conical bore angle complementation of straight coupling, and improve the requirement to surface both roughness, the gap of line connection is reduced greatly, enhances the tightness of pipeline, solve leakage problem.
Use practical proof for many years on certain aircraft, line seal interconnection technique provided by the invention is reasonable in design, safe and reliable, has the advantage that structure is simple, economical and practical, easy to maintenance, improves operability and the reliability of oxygen system.
Claims (2)
1. an aircraft oxygen system sealing linkage structure, it is characterized in that, comprise left conduit (1), left flat ozzle (2), left cap nut (3), straight coupling (4), right conduit (5), right flat ozzle (6) and right cap nut (7); The welding of left conduit (1) termination is enclosed within left flat ozzle (2), left flat ozzle (2) is spirally connected by left cap nut (3) and straight coupling (4), the welding of right conduit (5) termination is enclosed within right flat ozzle (6), and right flat ozzle (6) is spirally connected by right cap nut (7) and straight coupling (4).
2. a kind of aircraft oxygen system sealing linkage structure as claimed in claim 1, is characterized in that, the two ends of safety fuse cutout (8) are connected with left cap nut (3) and right cap nut (7) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410265037.7A CN105221865A (en) | 2014-06-13 | 2014-06-13 | A kind of aircraft oxygen system sealing linkage structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410265037.7A CN105221865A (en) | 2014-06-13 | 2014-06-13 | A kind of aircraft oxygen system sealing linkage structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105221865A true CN105221865A (en) | 2016-01-06 |
Family
ID=54991000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410265037.7A Pending CN105221865A (en) | 2014-06-13 | 2014-06-13 | A kind of aircraft oxygen system sealing linkage structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105221865A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985777A (en) * | 2019-12-25 | 2020-04-10 | 中国航空工业集团公司西安飞机设计研究所 | Oxygen pipeline sealing performance improving method |
| CN111734897A (en) * | 2020-07-03 | 2020-10-02 | 惠州宏利铸造有限公司 | Stable double-pipe fitting joint |
| CN117267498A (en) * | 2023-11-16 | 2023-12-22 | 中国航发沈阳黎明航空发动机有限责任公司 | Split assembled type combined externally-added nut connected with flat pipe mouth joint |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB204900A (en) * | 1922-10-06 | 1923-10-11 | John Henry Spencer | Improvements in unions for pipes for conveying high pressure fluids |
| US3653694A (en) * | 1970-06-24 | 1972-04-04 | Teledyne Inc | Tube coupling assembly |
| CN201288905Y (en) * | 2008-11-06 | 2009-08-12 | 饶义钟 | No-flared pipeline connector |
| CN102032403A (en) * | 2011-01-04 | 2011-04-27 | 江绍成 | Anti-loosening fluid pipeline threaded movable joint |
| CN202834479U (en) * | 2012-09-27 | 2013-03-27 | 贵州航太精密制造有限公司 | Connecting structure of flaring type pipe and non-flaring type pipe |
-
2014
- 2014-06-13 CN CN201410265037.7A patent/CN105221865A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB204900A (en) * | 1922-10-06 | 1923-10-11 | John Henry Spencer | Improvements in unions for pipes for conveying high pressure fluids |
| US3653694A (en) * | 1970-06-24 | 1972-04-04 | Teledyne Inc | Tube coupling assembly |
| CN201288905Y (en) * | 2008-11-06 | 2009-08-12 | 饶义钟 | No-flared pipeline connector |
| CN102032403A (en) * | 2011-01-04 | 2011-04-27 | 江绍成 | Anti-loosening fluid pipeline threaded movable joint |
| CN202834479U (en) * | 2012-09-27 | 2013-03-27 | 贵州航太精密制造有限公司 | Connecting structure of flaring type pipe and non-flaring type pipe |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985777A (en) * | 2019-12-25 | 2020-04-10 | 中国航空工业集团公司西安飞机设计研究所 | Oxygen pipeline sealing performance improving method |
| CN111734897A (en) * | 2020-07-03 | 2020-10-02 | 惠州宏利铸造有限公司 | Stable double-pipe fitting joint |
| CN117267498A (en) * | 2023-11-16 | 2023-12-22 | 中国航发沈阳黎明航空发动机有限责任公司 | Split assembled type combined externally-added nut connected with flat pipe mouth joint |
| CN117267498B (en) * | 2023-11-16 | 2024-02-13 | 中国航发沈阳黎明航空发动机有限责任公司 | Split assembled type combined externally-added nut connected with flat pipe mouth joint |
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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: 20160106 |
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| RJ01 | Rejection of invention patent application after publication |