Pipeline rigid connection joint with self-locking function

Abstract

The pipeline rigid connection joint with the self-locking function is composed of a first pipe sleeve, a lap joint wire, a gasket, a sealing ring, a sleeve, a lantern ring, a wave spring, a check ring and a second pipe sleeve, an annular boss is arranged on the outer side of one end of the first pipe sleeve, an annular sealing groove is formed in the annular boss in the mode of being perpendicular to the axis, and the sealing ring is arranged in the annular sealing groove; an anti-loose tooth groove is formed in the outer side of a first annular protrusion in the middle of the second pipe sleeve, a step is arranged at the end, close to the external thread, of the inner side of the first annular protrusion, the annular boss end of the first pipe sleeve is inserted into the step end of the second pipe sleeve, the first pipe sleeve and the second pipe sleeve are communicated with each other, a second annular groove is formed in the inner wall of the gasket, and the lap joint wire is arranged in the annular groove. The internal threads and the external threads are connected in a threaded fit mode, the wave spring provides pre-tightening force between the teeth and the grooves, so that the connector still does not loosen under the complex mechanical environment on a machine, and the connector is easy to mount and dismount, convenient to use and maintain and high in structural strength and has the functions of self-locking, rigid connection, electric lap joint and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline connection, and in particular relates to a pipeline rigid connection joint with a self-locking function. Background Art

[0002] The use scenarios of flexible connectors are limited. When using flexible connectors, avoid positions that need to withstand large-scale impacts, and when using flexible connectors, both ends need to be limited and fixed. As an important part of aircraft fuel, environmental control and other systems, flexible connectors are used for connecting and sealing pipelines. They are widely used in pipelines of various types of fuel, environmental control and other systems. There is an urgent need to improve their reliability and ensure their installation and use environment. In order to achieve fixed limits on both ends of the flexible connector and ensure that the flexible connector can be used normally under various working conditions on the aircraft, this pipeline rigid connection joint is designed for use with the flexible connector. Summary of the invention

[0003] The purpose of the present invention is to provide a pipeline rigid connection joint with a self-locking function, which is used in conjunction with a flexible connector to achieve fixed limiting of both ends of the flexible connector, improve its reliability of use, and ensure its installation and use environment.

[0004] The technical solution of the present invention is as follows: a pipeline rigid connection joint with a self-locking function, which is composed of a pipe sleeve, a lap wire, a gasket, a sealing ring, a sleeve, a collar, a wave spring, a retaining ring, and a pipe sleeve. An annular boss is provided on the outer side of one end of the pipe sleeve, and an annular sealing groove is provided on the annular boss perpendicular to the axis. The sealing ring is placed in the annular sealing groove. An annular groove is provided on the outer side of the middle part of the pipe sleeve. An annular protrusion and an external thread are respectively provided at both ends of the annular groove. An anti-loosening tooth groove is provided on the outer side of the annular protrusion. A step is provided on the inner side of the pipe sleeve near one end of the external thread. The inner diameter of the step side wall is slightly larger than the outer diameter of the annular boss. The annular boss end of the pipe sleeve is inserted into the step end of the pipe sleeve, and the right end face of the pipe sleeve abuts against the pipe sleeve. The stepped end surface allows the sleeve to still pass through the sleeve from the sealing groove end after the sleeve is connected to the on-machine guide tube, and there is no need to pre-install the sleeves one and two that are connected to each other. The inner wall of the gasket is provided with an annular groove two, and the lap wire is placed in the annular groove. The gasket is placed on the side of the annular boss away from the sleeve two. An annular groove three is provided on the outer side of one end of the sleeve, and an internal thread is provided on the inner wall. An annular protrusion two is provided on the inner wall of the other end. The internal thread is threadably connected with the external thread, and the right side of the annular protrusion two abuts against the left side of the gasket. The wave spring and the retaining ring are placed in the annular groove three, and the retaining ring is placed on the side close to the sleeve two. An anti-loosening tooth is provided at one end of the collar to cooperate with the anti-loosening tooth groove for locking, and an annular groove four is provided on the inner wall in the middle of the collar to clamp the retaining ring for limiting.

[0005] Furthermore, the pipe sleeve 1, sealing ring, sleeve, collar, wave spring, retaining ring and pipe sleeve 2 are all rotating body structures.

[0006] Furthermore, the maximum diameter of the retaining ring is greater than the maximum diameter of the wave spring, providing a pre-tightening force between the anti-loosening teeth and the anti-loosening tooth grooves, so that the joint does not loosen even when subjected to a complex mechanical environment on the machine.

[0007] Furthermore, an annular groove five is provided on the inner wall of the middle portion of the second pipe sleeve to avoid the step to reduce weight.

[0008] Furthermore, the first pipe sleeve, the overlapping wire, the gasket, the sleeve and the second pipe sleeve are all made of conductive materials.

[0009] Furthermore, the inclination angle of the anti-loosening tooth groove is greater than the inclination angle of the anti-loosening tooth, and after the joint is installed in place, the teeth and grooves are engaged to prevent loosening by themselves.

[0010] Furthermore, a plurality of bosses are evenly arranged on the inner wall of one end of the ring away from the anti-loosening tooth, and grooves are provided on the outer sides of the three ends of the sleeve away from the annular groove to cooperate with the bosses. On the one hand, the bosses cooperate with the grooves on the sleeve to limit the position, and on the other hand, the radial installation angle of the part is determined by the bosses, thereby improving the tooth-groove matching quality after the product is installed.

[0011] Furthermore, the gasket is designed as an open circular ring, has a certain elasticity, and can be disassembled and assembled using a universal retaining ring pliers.

[0012] Furthermore, the number and size of the grooves and teeth of the anti-loosening tooth grooves and anti-loosening teeth can be adjusted respectively according to the specifications of the joint, thereby determining the starting position of the threads on the pipe sleeve 2 and the sleeve, and ensuring that the anti-loosening teeth can reliably fall into the anti-loosening tooth grooves after the joint is installed in place.

[0013] Furthermore, the pipe sleeve 1 and the pipe sleeve 2 are connected to the pipeline by various methods such as spinning, plug welding, butt welding, etc., or converted into the interface size of the finished catheter connection product.

[0014] Beneficial effects of the present invention:

[0015] (1) The connector is easy to disassemble and assemble, no pre-installation is required, and it can be disassembled and assembled using common tools;

[0016] (2) There are multiple electrical bonding paths such as direct contact between the metal sleeve and bonding wire, which effectively prevents static electricity accumulation at the joints;

[0017] (3) After installation, there is no need to use additional anti-loosening methods such as fuses, which effectively saves installation time and can be used in locations with small installation space;

[0018] (4) The hole shaft and sealing ring are sealed, the sealing pair is mature and simple, the sealing is reliable, and the processing cost of the seal is low;

[0019] (5) Compared with other rigid connection structures currently on board, such as flanges, the weight of the present invention is significantly reduced by about 1 / 3 compared with flanges of the same specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings herein are incorporated into and constitute a part of the specification, showing embodiments consistent with the present invention, and together with the specification, are used to explain the principles of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0021] Figure 1 A schematic diagram of the structure of a pipeline rigid connection joint with a self-locking function provided by the present invention;

[0022] Figure 2 A schematic diagram of the structure of the pipe sleeve 2 provided by the present invention;

[0023] Figure 3 A cross-sectional schematic diagram of the pipe sleeve 2 provided by the present invention;

[0024] Figure 4 A schematic diagram of the ring structure provided by the present invention;

[0025] Figure 5 Schematic diagram of the assembly structure of the lap wire and gasket provided by the present invention

[0026] Figure 6 Schematic diagram of the sleeve structure provided by the present invention

[0027] Figure 7 The electrical bridging path provided by the present invention is

[0028] Figure 8 The electrical connection path provided by the present invention is

[0029] In the attached drawings: 1-pipe sleeve 1, 11-annular boss, 111-annular sealing groove

[0030] 2- Overlap wire,

[0031] 3-washer, 31-annular groove 2

[0032] 4-Sealing ring

[0033] 5-sleeve, 51-annular groove three, 52-internal thread, 53-annular protrusion two, 54-groove

[0034] 6-ring, 61-anti-loosening tooth, 62-annular groove four, 63-boss

[0035] 7-Wave Spring

[0036] 8-Retaining ring

[0037] 9-pipe sleeve 2, 91-annular groove 1, 92-annular protrusion 1, 93-external thread, 94-step, 95-annular groove 5, 921-anti-loosening tooth groove DETAILED DESCRIPTION

[0038] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the present invention will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.

[0039] See also Figure 1 , the figure shows a schematic diagram of the structure of a pipeline rigid connection joint with a self-locking function provided by the present invention, which consists of a pipe sleeve 1, a lap wire 2, a gasket 3, a sealing ring 4, a sleeve 5, a collar 6, a wave spring 7, a retaining ring 8, and a pipe sleeve 9. An annular boss 11 is provided on the outer side of one end of the pipe sleeve 1, and an annular sealing groove 111 is provided on the annular boss 11 vertically to the axis. The sealing ring 4 is placed in the annular sealing groove 111. An annular groove 91 is provided on the outer side of the middle part of the pipe sleeve 9, and an annular protrusion 92 and an external thread 93 are respectively provided at both ends of the annular groove 91. An anti-loosening tooth groove 921 is provided on the outer side of the annular protrusion 92, and a step 94 is provided on the inner side of the pipe sleeve 9 near the external thread 93. The inner diameter of the side wall of the step 94 is slightly larger than the outer diameter of the annular boss 11. The end of the annular boss 11 of the pipe sleeve 1 is inserted into the step 94 end of the pipe sleeve 9, and the right end face of the pipe sleeve 1 abuts against The step 84 end face of the pipe sleeve 2 9 allows the sleeve 5 to still pass through the pipe sleeve from the annular sealing groove 111 end after the pipe sleeve is connected to the on-machine guide tube, without pre-installation. The pipe sleeve 1 1 and the pipe sleeve 2 9 are connected to each other. The inner wall of the gasket 3 is provided with an annular groove 2 31, and the lap wire 2 is placed in the annular groove 31. The gasket 3 is placed on the side of the annular boss 11 away from the pipe sleeve 2 9. The outer side of one end of the sleeve 5 is provided with an annular groove 3 51, and the inner wall is provided with an internal thread 52. The inner wall of the other end is provided with an annular protrusion 2 53. The internal thread 52 is threadedly connected with the external thread 93, and the right side of the annular protrusion 2 53 abuts against the left side of the gasket 3. The wave spring 7 and the retaining ring 8 are placed in the annular groove 3 51, and the retaining ring 8 is placed close to the side of the pipe sleeve 2 9. One end of the collar 6 is provided with an anti-loosening tooth 61 that cooperates with the anti-loosening tooth groove 921 for locking, and the middle inner wall is provided with an annular groove 4 62 to clamp the retaining ring 8.

[0040] The pipe sleeve 1, sealing ring 4, sleeve 5, collar 6, and pipe sleeve 2 9 are all of rotating body structure. The maximum diameter of the retaining ring 8 is larger than the maximum diameter of the wave spring 7, providing a pre-tightening force between the anti-loosening teeth 61 and the anti-loosening tooth grooves 921, so that the joint will not loosen even when subjected to the complex mechanical environment on the machine. An annular groove 5 95 is provided on the inner wall of the middle part of the pipe sleeve 2 9 to avoid the step 94. The pipe sleeve 1, lap wire 2, washer 3, sleeve 5, and pipe sleeve 2 9 are all made of conductive materials. The inclination angle of the anti-loosening tooth groove 921 is larger than the inclination angle of the anti-loosening tooth 61, and the teeth and grooves are engaged to prevent loosening after the joint is installed in place.

[0041] The inner wall of the end of the ring 6 away from the anti-loosening tooth 61 is evenly provided with a plurality of bosses 63, and the outer side of the end of the sleeve 5 away from the annular groove 51 is provided with a groove 54 to cooperate with the boss 63. On the one hand, the boss 63 cooperates with the groove 54 to limit the position, and on the other hand, the radial installation angle of this part is determined by the boss 63, so as to improve the tooth-groove matching quality after the product is installed.

[0042] The gasket 3 is an open ring with a certain elasticity, and can be disassembled and assembled using a universal retaining ring pliers. The anti-loosening tooth groove 921 and the anti-loosening tooth 61 adjust the number and size of the grooves and teeth according to the joint specifications, thereby specifying the starting position of the thread on the pipe sleeve 2 9 and the sleeve 5. The pipe sleeve 1 and the pipe sleeve 2 9 are connected to the pipeline by spinning, plug welding, butt welding and other methods. There is no need to pre-install the joint before installing the pipe sleeve, and universal tools can be used to achieve quick disassembly and assembly.

[0043] Multiple electrical bonding design: There are two electrical bonding paths, path one (see Figure 7 ): The current passes through the conduit → tube sleeve 1 → tube sleeve 2 → the other end of the conduit, realizing the charge conduction. Path 2 (see Figure 8 ): The current passes through the conduit → pipe sleeve 1 → lap wire → sleeve → pipe sleeve 2 → the other end of the conduit to achieve charge conduction. The multiple electrical lap redundancy design is more reliable and the lap resistance value is smaller.

[0044] Quick-release self-locking structure design: anti-loosening tooth grooves 921 are arranged on the pipe sleeve 9, and anti-loosening teeth 61 are arranged on the collar 6. The inclination angle of the anti-loosening tooth grooves 921 should be greater than the inclination angle of the anti-loosening teeth 61. After the joint is installed in place, the teeth and grooves are engaged to prevent loosening. At the same time, the wave spring 7 provides a pre-tightening force between the teeth and grooves, so that the joint will not loosen even under the complex mechanical environment on the machine, and can self-lock reliably. The number of teeth and grooves is reasonably adjusted according to the joint specifications, and the starting position of the threads on the pipe sleeve 2 and the sleeve 5 is specified to ensure that the anti-loosening teeth can reliably fall into the anti-loosening tooth grooves after the joint is installed in place. After pressing down the collar 6, manually loosening the thread pair can complete quick disassembly, and the disassembly and assembly process can be completed by hand.

[0045] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0046] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0047] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0048] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0049] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Any modification or equivalent substitution made to the technical solution of the present invention by ordinary technicians in this field shall be included in the scope of the claims of the present invention as long as it does not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A pipeline rigid connection joint with a self-locking function, characterized in that: The invention comprises a pipe sleeve (1), a lap wire (2), a gasket (3), a sealing ring (4), a sleeve (5), a collar (6), a wave spring (7), a retaining ring (8), and a pipe sleeve (9). An annular boss (11) is provided on the outer side of one end of the pipe sleeve (1), an annular sealing groove (111) is provided on the annular boss (11) perpendicular to the axis, and the sealing ring (4) is placed in the annular sealing groove (111). An annular groove (91) is provided on the outer side of the middle part of the pipe sleeve (9), an annular protrusion (92) and an external thread (93) are provided at both ends of the annular groove (91), an anti-loosening tooth groove (921) is provided on the outer side of the annular protrusion (92), a step (94) is provided on the inner side of the pipe sleeve (9) near the external thread (93), the inner diameter of the side wall of the step (94) is slightly larger than the outer diameter of the annular boss (11), and the annular boss (11) end of the pipe sleeve (1) is inserted into the pipe sleeve (9). The step (94) end of the sleeve (5) is connected to the first sleeve (1) and the second sleeve (9). The inner wall of the gasket (3) is provided with a second annular groove (31). The lap wire (2) is placed in the annular groove (31). The gasket (3) is placed on the side of the annular boss (11) away from the second sleeve (9). The outer side of one end of the sleeve (5) is provided with a third annular groove (51), the inner wall is provided with an internal thread (52), and the inner wall of the other end is provided with a second annular protrusion (53). The internal thread (52) is threadably connected to the external thread (93), the right side of the annular protrusion (53) abuts against the left side of the washer (3), the wave spring (7) and the retaining ring (8) are placed in the annular groove (51), the retaining ring (8) is placed close to the side of the pipe sleeve (9), one end of the collar (6) is provided with an anti-loosening tooth (61) which is locked with the anti-loosening tooth groove (921), and the middle inner wall is provided with an annular groove (62) to clamp the retaining ring (8).

2. The pipeline rigid connection joint with self-locking function according to claim 1 is characterized in that: The pipe sleeve 1 (1), the sealing ring (4), the sleeve (5), the collar (6) and the pipe sleeve 2 (9) are all of a rotating body structure.

3. The pipeline rigid connection joint with self-locking function according to claim 1, characterized in that: The maximum diameter of the retaining ring (8) is greater than the maximum diameter of the wave spring (7).

4. The pipeline rigid connection joint with self-locking function according to claim 1, characterized in that: The inner wall of the middle part of the second pipe sleeve (9) is provided with an annular groove (95) avoiding the step (94).

5. The pipeline rigid connection joint with self-locking function according to claim 1, characterized in that: The pipe sleeve 1 (1), the overlapping wire (2), the washer (3), the sleeve (5) and the pipe sleeve 2 (9) are all made of conductive materials.

6. The pipeline rigid connection joint with self-locking function according to claim 1, characterized in that: The inclination angle of the anti-loosening tooth groove (921) is greater than the inclination angle of the anti-loosening tooth (61).

7. The pipeline rigid connection joint with self-locking function according to claim 1, characterized in that: A plurality of bosses (63) are evenly arranged on the inner wall of one end of the collar (6) away from the anti-loosening teeth (61), and a groove (54) is arranged on the outer side of the third end of the sleeve (5) away from the annular groove (51) to cooperate with the bosses (63).

8. The pipeline rigid connection joint with self-locking function according to claim 1, characterized in that: The gasket (3) is in the shape of an open circular ring.

9. The pipeline rigid connection joint with self-locking function according to claim 1, characterized in that: The anti-loosening tooth grooves (921) and the anti-loosening teeth (61) are respectively adjusted in number and size of the grooves and teeth according to the joint specifications.

10. The pipeline rigid connection joint with self-locking function according to claim 1, characterized in that: The pipe sleeve one (1) and the pipe sleeve two (9) are connected to the pipeline by various methods such as spinning, plug welding, butt welding, etc.

Images