CN216666780U - Aviation fluid pipeline joint - Google Patents
Aviation fluid pipeline joint Download PDFInfo
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- CN216666780U CN216666780U CN202220237350.XU CN202220237350U CN216666780U CN 216666780 U CN216666780 U CN 216666780U CN 202220237350 U CN202220237350 U CN 202220237350U CN 216666780 U CN216666780 U CN 216666780U
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Abstract
The utility model relates to the technical field of pipeline joints, in particular to an aviation fluid pipeline joint which comprises a pipeline, a joint and a pressing sleeve, wherein an expanding opening is formed at one end of the pipeline, an outer conical surface attached to an inner conical surface of the expanding opening is arranged at the end part of the joint, the pressing sleeve is sleeved on the joint and extrudes the expanding opening on the outer conical surface of the joint, a nut in threaded connection with the outer wall of the joint is movably sleeved at one end of the pressing sleeve, a ball groove is formed in the outer wall of the joint, the depth of the ball groove is gradually increased from one end close to the pipeline to the other end, a ball is embedded in the ball groove, and the ball abuts against the inner wall of the pressing sleeve. According to the utility model, the pressing sleeve is arranged, the ball and the ball groove with the inclined surface at the bottom are arranged between the pressing sleeve and the outer wall of the joint, and after the pressing sleeve is sleeved on the outer wall of the joint, the ball can form a reverse clamping force on the pressing sleeve by matching with the inclined surface at the bottom of the ball groove, so that the pressing sleeve can always extrude the flaring of the pipeline at the end part of the joint, and the problem that the sealing property between the pipeline and the joint is influenced due to the vibration of fluid in the pipeline is avoided.
Description
Technical Field
The utility model relates to the technical field of pipeline joints, in particular to an aviation fluid pipeline joint.
Background
The standard of a 74-degree flared joint structure commonly used in an aviation hydraulic pipeline structure at present is HB-4-1 flared pipe connector general specification. Wherein the connecting form of the pipeline and the joint is as follows: flaring the pipeline by using a die, and processing the pipeline into a horn shape to form a 74-degree inner conical surface; processing the joint into a 74-degree outer conical surface; and the internal and external conical surfaces are compressed by using a screw structure to apply pressing force by virtue of an additional nut and a flat nozzle, so that a sealed connection structure is formed.
The prior patent with publication number CN206130355U proposes an aviation fluid pipeline joint, wherein a sealing ring groove is processed on the matching surface of the joint and the pipeline, the sealing ring is embedded in the sealing ring groove, and a second-stage seal is formed by matching the sealing ring and the pipeline, so that the sealing performance of the structure is enhanced. However, in the actual use of the pipe joint, the nut for providing the pressing force between the pipe and the joint is easy to loosen due to the vibration generated by the fluid flowing in the pipe, and the sealing performance of the pipe in the use process is further affected.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Aiming at the defects of the prior art, the utility model provides an aviation fluid pipeline joint which can prevent the joint and a pipeline from loosening and solve the problem that the original pipeline joint is easy to loosen due to the vibration of fluid in the pipeline.
(II) technical scheme
In order to achieve the purpose of preventing the loosening between the joint and the pipeline, the utility model provides the following technical scheme: the utility model provides an aviation fluid pipe joint, includes the pipeline, connects and presses the cover, pipeline one end shaping has the flaring, the joint tip be equipped with the outer conical surface of flaring internal conical surface laminating, press the cover to locate it is overhead and will the flaring is extruded on the outer conical surface of joint, press cover one end movable sleeve be equipped with connect outer wall threaded connection's nut, connect the outer wall to have seted up the pearl groove, the degree of depth in pearl groove is by being close to the one end to the other end of pipeline increases gradually, the embedding of pearl inslot has the ball, just the ball with press the cover inner wall to offset.
Optionally, the bead grooves are provided with two, and the two bead grooves are symmetrically arranged on two sides of the joint.
Optionally, a first rubber mat which is in an L shape is arranged in the ball groove, and the outer wall of the ball is tangent to the inner walls of two sides of the first rubber mat.
Optionally, the inner wall of the pressing sleeve is provided with a limiting groove corresponding to the ball, one end of the limiting groove extends to the end face of the pressing sleeve, and the ball is partially embedded into the limiting groove.
Optionally, the limiting groove is of a circular arc-shaped structure, a second rubber pad is fixedly arranged on the inner wall of the limiting groove, and the ball abuts against the second rubber pad.
Optionally, the outer wall of the pressing sleeve is provided with a pinhole communicated with the limiting groove, and one end of the pinhole extends to the end face of the pressing sleeve.
Optionally, a sealing ring is arranged on a joint surface of the joint and the flaring, and the sealing ring is embedded in the outer conical surface of the joint.
(III) advantageous effects
Compared with the prior art, the utility model provides an aviation fluid pipeline joint, which has the following beneficial effects:
1. according to the utility model, the pressing sleeve is arranged, the ball and the ball groove with the inclined surface at the bottom are arranged between the pressing sleeve and the outer wall of the joint, and after the pressing sleeve is sleeved on the outer wall of the joint, the ball is matched with the inclined surface at the bottom of the ball groove to form a reverse clamping force on the pressing sleeve, so that the pressing sleeve can always extrude the flaring of the pipeline at the end part of the joint, and the problem that the sealing property between the pipeline and the joint is influenced due to the vibration of fluid in the pipeline is avoided;
2. according to the utility model, the ball grooves are formed on the two sides of the joint, and the balls in the two ball grooves simultaneously form reverse clamping on the two sides of the pressing sleeve, so that the pressing sleeve is uniformly stressed, and the stability of the pressing sleeve is improved;
3. according to the utility model, the first rubber pad is arranged in the ball groove, and the first rubber pad increases the friction force between the ball and the ball groove, so that the reverse clamping effect of the ball on the pressing sleeve is better.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic view of the pressing sleeve structure of the present invention;
FIG. 3 is a schematic cross-sectional front view of the present invention;
fig. 4 is an enlarged schematic view of the structure at a in fig. 3 according to the present invention.
In the figure: 1. a pipeline; 10. flaring; 2. a joint; 20. a bead groove; 3. pressing the sleeve; 30. a limiting groove; 31. a pinhole; 4. a nut; 5. a ball bearing; 6. a first rubber pad; 7. a second rubber pad; 8. and (5) sealing rings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b): referring to fig. 1 to 4, an embodiment of the present invention provides a technical solution: an aviation fluid pipeline joint comprises a pipeline 1, a joint 2 and a pressing sleeve 3, wherein an expanding opening 10 is formed at one end of the pipeline 1, an outer conical surface which is attached to an inner conical surface of the expanding opening 10 is arranged at the end part of the joint 2, the pressing sleeve 3 is sleeved on the joint 2 and extrudes the expanding opening 10 onto the outer conical surface of the joint 2, a nut 4 which is in threaded connection with the outer wall of the joint 2 is movably sleeved at one end of the pressing sleeve 3, a ball groove 20 is formed in the outer wall of the joint 2, the depth of the ball groove 20 is gradually increased from one end close to the pipeline 1 to the other end, balls 5 are embedded in the ball groove 20 and abut against the inner wall of the pressing sleeve 3, when the pressing sleeve 3 is sleeved at one end of the joint 2, the balls 5 rotate at the deeper end of the ball groove 20, after the pressing sleeve 3 is completely sleeved on the outer wall of the joint 2, the balls 5 can play a role of preventing the pressing sleeve 3 from moving backwards by matching with the inclined plane at the bottom of the ball groove 20, in such a way that, even if the nut 4 is loosened, the pressing sleeve 3 can extrude the expanding opening 10 onto the outer wall of the joint 2, the problem that the sealing performance between the pipeline 1 and the joint 2 is influenced due to the vibration of the fluid in the pipeline 1 is solved.
In order to improve the stability of the pressing sleeve 3, on the basis of the above embodiment, two bead grooves 20 are provided in the present embodiment, the two bead grooves 20 are symmetrically provided on two sides of the joint 2, and the balls 5 in the two bead grooves 20 form reverse clamping on two sides of the pressing sleeve 3 at the same time, so that the pressing sleeve 3 is uniformly stressed, and the stability of the pressing sleeve 3 is improved.
Because the pressure cover 3 utilizes the reverse chucking of the frictional force of ball 5 and pearl groove 20 bottom, in order to increase the frictional force of ball 5 and pearl groove 20 bottom, improve the chucking effect, on the basis of above-mentioned embodiment, be equipped with the first cushion 6 that is the L type in the pearl groove 20 of this embodiment, the outer wall of ball 5 is tangent with the inner wall of first cushion 6 both sides, first cushion 6 has increased the frictional force between ball 5 and the pearl groove 20, make ball 5 better to the reverse chucking effect of pressure cover 3.
On the basis of the above-mentioned embodiment, the spacing groove 30 corresponding with ball 5 is opened to the 3 inner walls of pressure cover of this embodiment, and spacing groove 30 one end extends to the terminal surface of pressing cover 3, and in the ball 5 part embedding spacing groove 30, ball 5 embedding spacing groove 30 back can restrict and press cover 3 to rotate, avoids pressing cover 3 to drive ball 5 rotation activity to further improve ball 5 and to pressing the reverse chucking effect of cover 3.
On the basis of above-mentioned embodiment, the spacing groove 30 of this embodiment is convex structure, and the fixed second cushion 7 that is equipped with of spacing groove 30 inner wall, ball 5 offset with second cushion 7, and second cushion 7 has increased the friction between ball 5 and the 3 inner walls of pressure cover, avoids taking place relative slip between ball 5 and the pressure cover 3, guarantees the chucking effect of ball 5 to the pressure cover 3.
In order to facilitate the disassembly of the pressing sleeve 3, on the basis of the above embodiment, the outer wall of the pressing sleeve 3 of this embodiment is provided with a pinhole 31 communicated with the limiting groove 30, one end of the pinhole 31 extends to the end surface of the pressing sleeve 3, when the pressing sleeve 3 needs to be disassembled, a rod-shaped object can be inserted into the pinhole 31 to abut against the ball 5, so that the ball 5 is separated from the inner wall of the pressing sleeve 3, and the pressing sleeve 3 can be conveniently taken out.
In order to improve the sealing performance between the joint 2 and the pipe 1, on the basis of the above embodiments, the sealing ring 8 is provided on the joint surface between the joint 2 and the flared opening 10 of the present embodiment, the sealing ring 8 is embedded and mounted on the outer conical surface of the joint 2, and the sealing ring 8 elastically contacts the joint 2 and the flared opening 10, thereby improving the sealing performance between the joint 2 and the flared opening 10.
The working principle is as follows: will press 3 covers of cover to locate the outer wall of pipeline 1 earlier, then, embolia the pressure cover 3 of built-in pipeline 1 by 2 one end of joint, when emboliaing, press 3 ball 5 rotations that promote the pearl groove 20 of cover, when pressing cover 3 to embolia joint 2 completely, press cover 3 to compress tightly the flaring 10 of pipeline 1 tip on the external cone face of joint 2, finally, will press 3 terminal portion of cover nut 4 with connect 2 outer wall threaded connection can, pipeline 1 is connected with joint 2 and is accomplished the back interface and put into use, in the use, the pipeline 1 internal flow body can produce the vibration, and the inclined plane of ball 5 cooperation pearl groove 20 bottom can provide a reverse chucking power for pressing cover 3, avoid pressing cover 3 not hard up, thereby guarantee to connect 2 and 1 terminal portion of pipeline flaring between 10 leakproofness.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. An aerial fluid line connector, comprising: including pipeline (1), joint (2) and pressure cover (3), pipeline (1) one end shaping has flaring (10), connect (2) tip be equipped with the outer conical surface of flaring (10) inner conical surface laminating, press cover (3) cover to locate connect (2) to go up and will flaring (10) extrusion on the outer conical surface of joint (2), press cover (3) one end activity cover be equipped with connect (2) outer wall threaded connection's nut (4), connect (2) outer wall and seted up pearl groove (20), the degree of depth in pearl groove (20) is by being close to the one end to the other end of pipeline (1) increases gradually, pearl groove (20) embedded in has ball (5), just ball (5) with press cover (3) inner wall to offset.
2. The aircraft fluid coupling of claim 1, wherein: the two bead grooves (20) are symmetrically arranged on two sides of the joint (2).
3. An aircraft fluid coupling according to claim 1 or claim 2, wherein: the ball groove (20) is internally provided with a first rubber mat (6) in an L shape, and the outer wall of the ball (5) is tangent to the inner walls of two sides of the first rubber mat (6).
4. The aircraft fluid coupling of claim 1, wherein: the inner wall of the pressing sleeve (3) is provided with a limiting groove (30) corresponding to the ball (5), one end of the limiting groove (30) extends to the end face of the pressing sleeve (3), and the ball (5) is partially embedded into the limiting groove (30).
5. The aircraft fluid coupling of claim 4, wherein: the limiting groove (30) is of an arc-shaped structure, a second rubber pad (7) is fixedly arranged on the inner wall of the limiting groove (30), and the balls (5) are abutted to the second rubber pad (7).
6. An aircraft fluid coupling according to claim 4 or 5, wherein: the outer wall of the pressing sleeve (3) is provided with a pinhole (31) communicated with the limiting groove (30), and one end of the pinhole (31) extends to the end face of the pressing sleeve (3).
7. An aerospace fluid coupling according to claim 1, wherein: and a sealing ring (8) is arranged on the joint surface of the joint (2) and the flaring (10), and the sealing ring (8) is embedded and installed on the outer conical surface of the joint (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220237350.XU CN216666780U (en) | 2022-01-28 | 2022-01-28 | Aviation fluid pipeline joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220237350.XU CN216666780U (en) | 2022-01-28 | 2022-01-28 | Aviation fluid pipeline joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216666780U true CN216666780U (en) | 2022-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220237350.XU Active CN216666780U (en) | 2022-01-28 | 2022-01-28 | Aviation fluid pipeline joint |
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| CN (1) | CN216666780U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115388248A (en) * | 2022-10-28 | 2022-11-25 | 烟台中宇航空液压有限公司 | Hydraulic pipe connector for aircraft engine |
-
2022
- 2022-01-28 CN CN202220237350.XU patent/CN216666780U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115388248A (en) * | 2022-10-28 | 2022-11-25 | 烟台中宇航空液压有限公司 | Hydraulic pipe connector for aircraft engine |
| CN115388248B (en) * | 2022-10-28 | 2023-01-31 | 烟台中宇航空液压有限公司 | Hydraulic pipe connector for aircraft engine |
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