CN212804652U - Flaring pipeline seal assembly - Google Patents
Flaring pipeline seal assembly Download PDFInfo
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- CN212804652U CN212804652U CN202020716410.7U CN202020716410U CN212804652U CN 212804652 U CN212804652 U CN 212804652U CN 202020716410 U CN202020716410 U CN 202020716410U CN 212804652 U CN212804652 U CN 212804652U
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- pipe
- guide pipe
- flaring
- gasket
- nozzle
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Abstract
The embodiment of the utility model discloses flaring pipeline seal assembly, including pipe 1, outer nut 2, flat nozzle 3, metal washer 4 and coupling 5, wherein: the guide pipe 1 is of a hollow pipe body structure, the first end of the guide pipe 1 is of a flaring structure, and the diameter of the first end of the guide pipe 1 is larger than that of the second end of the guide pipe 1; the flat pipe nozzle 3 is of a hollow pipe body structure, the first end of the flat pipe nozzle 3 is of an expanding structure, and the first end of the flat pipe nozzle 3 is sleeved on the outer wall of the first end of the guide pipe 1; the outer sleeve nut 2 passes through the second end of the conduit 1; the metal gasket 4 is an annular gasket, and the metal gasket 4 is tightly attached to the first end flaring of the guide pipe 1; the pipe joint 5 is screwed with the outer sleeve nut 2 through the metal washer 4.
Description
Technical Field
The application relates to the technical field of aviation, especially indicates a flaring pipeline seal assembly.
Background
At present, flared pipeline components are commonly used in domestic and foreign military and civil aircraft fluid and gas systems. The domestic military and civil aircrafts generally use HB4-1 series 74-degree flared pipeline connecting pieces. The HB4-1 series 74-degree flared pipeline connecting piece has higher requirements on the roughness of the conical surface of the pipe joint, the radial run-out value of the conical surface and the thread axis and the roughness of the conical surface of the flared part of the guide pipe.
In practical engineering applications, shape errors and surface roughness errors inevitably occur due to unstable machining processes and materials, and the like, so that the problem that the connecting component is not airtight may exist. Therefore, the method that polytetrafluoroethylene raw material belts are wound at the pipe joints or the screwing torque of the pipeline assembly is increased is generally adopted in China, the airtight requirement is met through thread sealing when the conical surface cannot be sealed, and the stress cracking of the outer sleeve nut is easily caused under the installation environment. Meanwhile, the flared pipeline assembly cannot be airtight after being disassembled and assembled for 5-6 times, a new pipeline needs to be manufactured, and the external field use cost is high.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the embodiment of the utility model provides a flaring pipeline seal assembly is provided to solve among the prior art problem that flaring pipeline assembly is airtight not good.
The application provides a flaring pipeline seal assembly, including pipe 1, overcoat nut 2, flat nozzle 3, metal gasket 4 and coupling 5, wherein:
the guide pipe 1 is of a hollow pipe body structure, the first end of the guide pipe 1 is of a flaring structure, and the diameter of the first end of the guide pipe 1 is larger than that of the second end of the guide pipe 1;
the flat pipe nozzle 3 is of a hollow pipe body structure, the first end of the flat pipe nozzle 3 is of an expanding structure, and the first end of the flat pipe nozzle 3 is sleeved on the outer wall of the first end of the guide pipe 1;
the outer sleeve nut 2 passes through the second end of the conduit 1;
the metal gasket 4 is an annular gasket, and the metal gasket 4 is tightly attached to the first end flaring of the guide pipe 1;
the pipe joint 5 is screwed with the outer sleeve nut 2 through the metal washer 4.
Alternatively, the diameter of the pipe connection 5 is matched to the inner diameter of the outer nut 2.
Alternatively, the metal washer 4 may have a shape that conforms to the flared shape of the first end of the conduit 1.
Optionally, the metal gasket 4 is an annular bowl-shaped gasket.
Optionally, the metal washer 4 is a rust-proof aluminum washer.
Optionally, the metal washer 4 is a soft, 0.5mm thick 3a21 rustproof aluminum washer.
The utility model has the advantages that: in the process of screwing the outer sleeve nut 2 and the pipe joint 5, the metal gasket generates plastic deformation, so that the concave-convex part on the surface of the gasket can be fully flattened, and the gap between the pipe joint and the flaring surface of the conduit can be filled up by microcosmic plastic flow. The flaring pipeline assembly sealing method can effectively improve the air tightness of the flaring pipeline assembly, reduce the requirement of the flaring pipeline assembly on the machining precision and greatly improve the product percent of pass; and the repeated assembly performance of the pipeline assembly is improved, and the economical efficiency and the maintainability of the system are improved.
Drawings
The accompanying drawings are included to provide a further understanding of the embodiments of the present invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention and not to limit the embodiments of the invention.
Fig. 1 is a schematic structural diagram of a flared pipeline sealing assembly according to an embodiment of the present invention;
wherein: 1-guide tube, 2-outer sleeve nut, 3-flat nozzle, 4-metal washer and 5-pipe joint.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
The present invention provides that several specific embodiments below may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.
The utility model belongs to an aviation technical field mainly relates to the sealing technique of flaring pipeline subassembly, can be applied to civilian field as general technique simultaneously, like medical oxygen supply equipment, air feed, liquid supply pipeline etc..
The technical scheme of the utility model is that: a sealing method for a flared pipeline assembly comprises a guide pipe 1, an outer sleeve nut 2, a flat nozzle 3, a metal gasket 4 and a pipe joint 5. When the pipeline assembly is installed, the metal gasket 4 is arranged at the flaring part of the guide pipe 1, and the outer sleeve nut 2 and the pipe joint 5 are screwed after the pipe joint 5 is in butt joint with the metal gasket 4.
The flaring pipeline component provided by the utility model can be used in the flaring pipeline component of civil and military aircraft fluid and liquid systems by the bowl-shaped sealing method, thereby effectively improving the air tightness of the flaring pipeline component, reducing the requirement of the flaring pipeline component on the processing precision and greatly improving the product percent of pass; and the repeated assembly performance of the pipeline assembly is improved, and the economical efficiency and the maintainability of the system are improved.
In practical application, the selection of the guide tube 1, the outer sleeve nut 2, the flat nozzle 3 and the pipe joint is performed according to HB 4-1. Specifically, the method comprises the following steps:
the application range is as follows: the metal gasket 4 is used between the aluminum alloy conduit and the pipe joint, the gasket is disposable, and the gasket is replaced after being disassembled and assembled.
Material and surface treatment: the metal gasket is made of 3A 21-O-delta 0.5, the specification of the material is GJB2053A-2008, and the surface treatment is chemical oxidation.
Manufacturing and molding: the conical surface of the metal gasket should not have edges and corners, and the edges of the cone should not have cracks or burrs and should be rounded.
The using method comprises the following steps: when the pipeline assembly is installed, the metal gasket 4 is arranged at the flaring part of the guide pipe 1, the pipe joint 5 is in butt joint with the metal gasket 4, the outer sleeve nut 2 and the pipe joint 5 are screwed tightly, and the pipeline assembly is installed according to the requirement of HB4-1 with constant force.
Although the embodiments of the present invention have been described above, the description is only for the convenience of understanding the present invention, and the present invention is not limited thereto. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (1)
1. A flared tube seal assembly, comprising a conduit (1), a cap nut (2), a flat nozzle (3), a metal gasket (4), and a tube fitting (5), wherein:
the guide pipe (1) is of a hollow pipe body structure, the first end of the guide pipe (1) is of a flaring structure, and the diameter of the first end of the guide pipe (1) is larger than that of the second end of the guide pipe (1);
the flat pipe nozzle (3) is of a hollow pipe body structure, the first end of the flat pipe nozzle (3) is of a flaring structure, and the first end of the flat pipe nozzle (3) is sleeved on the outer wall of the first end of the guide pipe (1);
the outer sleeve nut (2) penetrates through the second end of the guide pipe (1);
the metal gasket (4) is an annular gasket, and the metal gasket (4) is tightly attached to the first end flaring of the guide pipe (1);
the pipe joint (5) is screwed with the outer sleeve nut (2) through a metal washer (4); the diameter of the pipe joint (5) is matched with the inner diameter of the outer sleeve nut (2); the shape of the metal gasket (4) is consistent with the flaring shape of the first end of the guide pipe (1); the metal gasket (4) is an annular bowl-mouth-shaped gasket; the metal gasket (4) is an antirust aluminum gasket; the metal gasket (4) is a 3A21 antirust aluminum gasket with the thickness of 0.5mm in a soft state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020716410.7U CN212804652U (en) | 2020-04-30 | 2020-04-30 | Flaring pipeline seal assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020716410.7U CN212804652U (en) | 2020-04-30 | 2020-04-30 | Flaring pipeline seal assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212804652U true CN212804652U (en) | 2021-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020716410.7U Active CN212804652U (en) | 2020-04-30 | 2020-04-30 | Flaring pipeline seal assembly |
Country Status (1)
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| CN (1) | CN212804652U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233970A (en) * | 2021-12-21 | 2022-03-25 | 北京星航机电装备有限公司 | Connecting piece of standard flared pipe, preparation method of connecting piece and standard flared pipe |
-
2020
- 2020-04-30 CN CN202020716410.7U patent/CN212804652U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233970A (en) * | 2021-12-21 | 2022-03-25 | 北京星航机电装备有限公司 | Connecting piece of standard flared pipe, preparation method of connecting piece and standard flared pipe |
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