CN203348787U - Fuel duct flange connecting device with double-sealing structure - Google Patents
Fuel duct flange connecting device with double-sealing structure Download PDFInfo
- Publication number
- CN203348787U CN203348787U CN 201320285397 CN201320285397U CN203348787U CN 203348787 U CN203348787 U CN 203348787U CN 201320285397 CN201320285397 CN 201320285397 CN 201320285397 U CN201320285397 U CN 201320285397U CN 203348787 U CN203348787 U CN 203348787U
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- flange plate
- flange
- sealing
- fuel duct
- fuel
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Abstract
The utility model belongs to the technical field of aircraft fuel system duct flange sealing connection, and particularly relates to a fuel duct flange connecting device with a double-sealing structure. The fuel duct flange connecting device comprises an upper flange plate, a lower flange plate, an upper sealing ring and a lower sealing ring. An upper sealing groove is formed in the inner wall of a cavity of the upper flange plate, a lower sealing groove is formed in the outer wall of one end of a straight pipe of the lower flange plate, the upper sealing groove is independent from the lower sealing groove, the upper sealing groove and the lower sealing groove are distributed in the upper flange plate and the lower flange plate, and the amount of compression of the sealing rings can be effectively controlled within the optimal range. The fuel duct flange connecting device is light and ingenious in structural design and convenient to install, the sealing reliability of a fuel duct connector is improved, the fuel leakage risks are reduced, and an airplane can be used and fly safely.
Description
Technical field
The utility model belongs to the aircraft fuel system conduit flange technical field that is tightly connected, and particularly relates to a kind of fuel duct flange connecting apparatus of double sealing structure.
Background technique
Traditional fuel duct connects main by single rubber sealing or the sealing of flange rubber cushion.Single rubber sealing form, sealing reliability is lower, can't meet nacelle, hangs interior flame range, in inferior flame range, vibrating area and main cabin the zone of high reliability seal request; Flange rubber cushion seal form, be difficult to guarantee compression evenly, and the rubber cushion decrement also is difficult to control, and affects aircraft safety.
Summary of the invention
Goal of the invention: the fuel duct flange connecting apparatus that a kind of double sealing structure in the zone that sealing requirements such as can meeting nacelle is very high is provided.
Technological scheme: a kind of fuel duct flange connecting apparatus of double sealing structure, comprise upper flange plate 1, lower flange 4, the joint of upper flange plate 1 and lower flange 4 is provided with seal ring 2 and lower seal 3, and connects by fastening piece 8.
Described upper flange plate 1 inner chamber is provided with seal groove 6, and lower seal 3 is positioned in seal groove 6, and lower flange 4 straight tube end outer walls are provided with lower seal groove cavity 5, and upper seal ring 2 is positioned in lower seal groove cavity 5.
The end of upper flange plate 1 is provided with screw thread.
The beneficial effects of the utility model: the utility model is comprised of upper flange plate, lower flange, upper seal ring and lower seal.The upper flange plate cavity inner wall has upper seal groove, one end outer wall of lower flange straight tube has lower seal groove cavity, the double density sealing groove is independent, be distributed on two flanges, the seal ring decrement can effectively be controlled in optimum range, and this structural design is light and handy, easy for installation, improve the sealing reliability of fuel duct joint, reduced the fuel leakage risk, guaranteed aircraft utilization and flight safety.
The accompanying drawing explanation
Fig. 1 is the utility model explosive view;
Fig. 2 is the utility model sectional drawing;
Fig. 3 is the utility model plan view.
Wherein, 1-upper flange plate, the upper seal ring of 2-, 3-lower seal, 4-lower flange, 4-lower seal groove cavity, the upper seal groove of 6-, 7-fastening piece
Embodiment:
Below in conjunction with Figure of description, the utility model is described in further details.
As shown in Figures 1 and 3, a kind of fuel duct flange connecting apparatus of double sealing structure, comprise upper flange plate 1, lower flange 4, and the joint of upper flange plate 1 and lower flange 4 is provided with seal ring 2 and lower seal 3, and connect by fastening piece 7.
Described upper flange plate 1 inner chamber is provided with seal groove 6, and outside plate is plum blossom-shaped, the satellite hole of uniform six clamping bolts; Lower seal 3 is positioned in seal groove 6, and lower flange 4 straight tube end outer walls are provided with lower seal groove cavity 5, and upper seal ring 2 is positioned in lower seal groove cavity 5.
As shown in Figure 2, upper flange plate 1 is connected by six fastening pieces with lower flange 4, forms Central Symmetry and axially symmetric structure.
The end of upper flange plate 1 is provided with screw thread.
The utility model adopts two rubber sealing Connecting format, and the double density sealing groove is independent, is distributed on two flanges, the cushion rubber decrement can effectively be controlled in optimum range, improve the sealing reliability of fuel duct joint, reduced the fuel leakage risk, guaranteed aircraft utilization and flight safety.
During assembling, by upper seal ring 2 and lower seal 3 coating lubricating oil, be contained in lower seal groove cavity 5 and upper seal groove 6, then upper flange plate 1 and lower flange 4 flange panel faying surfaces are pressed close to, corresponding satellite fixed hole alignment, more fixing with fastening piece 7.Connecting format refers to accompanying drawing 1. in detail
The utility model adopts the design of opposition double density sealing groove, the double-sealing cushion rubber connects, the cushion rubber decrement can be controlled in optimum range, there is sealing firm, the advantages such as easy accessibility, solved traditional seal rubber pad decrement and be difficult to control, compress the problems such as inhomogeneous and single seal ring sealing reliability is low, improved the sealing reliability of fuel duct joint, reduce the fuel leakage risk, guaranteed aircraft utilization and flight safety.
Claims (4)
1. the fuel duct flange connecting apparatus of a double sealing structure, it is characterized in that, comprise upper flange plate [1], lower flange [4], the joint of upper flange plate [1] and lower flange [4] is provided with seal ring [2] and lower seal [3], and connects by fastening piece [7].
2. the fuel duct flange connecting apparatus of a kind of double sealing structure according to claim 1, it is characterized in that, described upper flange plate [1] inner chamber is provided with seal groove [6], lower seal [3] is positioned in seal groove [6], lower flange [4] straight tube end outer wall is provided with lower seal groove cavity [5], and upper seal ring [2] is positioned in lower seal groove cavity [5].
3. the fuel duct flange connecting apparatus of a kind of double sealing structure according to claim 2, is characterized in that, upper flange plate [1] is connected by six fastening pieces with lower flange [4], forms Central Symmetry and axially symmetric structure.
4. the fuel duct flange connecting apparatus of a kind of double sealing structure according to claim 3, is characterized in that, the end of upper flange plate [1] is provided with screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320285397 CN203348787U (en) | 2013-01-05 | 2013-05-23 | Fuel duct flange connecting device with double-sealing structure |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320003851 | 2013-01-05 | ||
| CN201320003851.2 | 2013-01-05 | ||
| CN 201320285397 CN203348787U (en) | 2013-01-05 | 2013-05-23 | Fuel duct flange connecting device with double-sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203348787U true CN203348787U (en) | 2013-12-18 |
Family
ID=49748687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320285397 Expired - Lifetime CN203348787U (en) | 2013-01-05 | 2013-05-23 | Fuel duct flange connecting device with double-sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203348787U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075051A (en) * | 2014-06-23 | 2014-10-01 | 中国科学院等离子体物理研究所 | Flange having warning function |
| CN105627000A (en) * | 2014-10-28 | 2016-06-01 | 中国航空工业集团公司西安飞机设计研究所 | Adjustable flange sealing connecting device |
| CN106704737A (en) * | 2016-12-26 | 2017-05-24 | 中国航空工业集团公司西安飞机设计研究所 | Adjustable frame double-seal flange connecting structure |
| CN108400562A (en) * | 2018-03-10 | 2018-08-14 | 孙萍 | Double density sealing groove three-way body branch cartridge module |
| CN109854832A (en) * | 2019-02-28 | 2019-06-07 | 温州腾骄环保科技有限公司 | A kind of chemical industry liquid conducting pipes and pipe connecting method |
| CN111322470A (en) * | 2020-03-13 | 2020-06-23 | 佛山市南海区瑞进不锈钢实业有限公司 | Lock expands formula pipe connection spare |
| CN112324911A (en) * | 2020-11-13 | 2021-02-05 | 中国船舶重工集团公司第七0三研究所 | Novel perpendicular cantilever seal structure |
| KR102310633B1 (en) * | 2020-11-16 | 2021-10-12 | 주식회사 우진 | Water pipe connection structure to prevent leakage of joints |
-
2013
- 2013-05-23 CN CN 201320285397 patent/CN203348787U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075051A (en) * | 2014-06-23 | 2014-10-01 | 中国科学院等离子体物理研究所 | Flange having warning function |
| CN105627000A (en) * | 2014-10-28 | 2016-06-01 | 中国航空工业集团公司西安飞机设计研究所 | Adjustable flange sealing connecting device |
| CN106704737A (en) * | 2016-12-26 | 2017-05-24 | 中国航空工业集团公司西安飞机设计研究所 | Adjustable frame double-seal flange connecting structure |
| CN108400562A (en) * | 2018-03-10 | 2018-08-14 | 孙萍 | Double density sealing groove three-way body branch cartridge module |
| CN109854832A (en) * | 2019-02-28 | 2019-06-07 | 温州腾骄环保科技有限公司 | A kind of chemical industry liquid conducting pipes and pipe connecting method |
| CN111322470A (en) * | 2020-03-13 | 2020-06-23 | 佛山市南海区瑞进不锈钢实业有限公司 | Lock expands formula pipe connection spare |
| CN111322470B (en) * | 2020-03-13 | 2021-09-14 | 浙江双森金属科技股份有限公司 | Lock expands formula pipe connection spare |
| CN112324911A (en) * | 2020-11-13 | 2021-02-05 | 中国船舶重工集团公司第七0三研究所 | Novel perpendicular cantilever seal structure |
| KR102310633B1 (en) * | 2020-11-16 | 2021-10-12 | 주식회사 우진 | Water pipe connection structure to prevent leakage of joints |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131218 |