CN112283470A

CN112283470A - Detachable pipe joint

Info

Publication number: CN112283470A
Application number: CN202011196886.3A
Authority: CN
Inventors: 张东林; 任立新; 高万彬
Original assignee: AECC Shenyang Engine Research Institute
Current assignee: AECC Shenyang Engine Research Institute
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-01-29

Abstract

The application belongs to the pipe joint field, in particular to a detachable pipe joint. The method comprises the following steps: ball joint, interior cone joint, clamp plate, overcoat nut. The ball joint comprises a first pipe joint part and a ball head, and a first conduit is arranged on the inner side of the first pipe joint part; the inner cone connector comprises a second pipe connecting part and an inner cone head, a second conduit is arranged on the inner side of the second pipe connecting part, and an outer thread section is arranged at one end of the inner cone head of the inner cone connector; the pressing plate is annular, is sleeved at one end of the first pipe connecting part close to the ball head and is fixedly connected with the first pipe connecting part, a platform is arranged on the outer side wall surface of the pressing plate, and a boss is arranged on the end surface of the pressing plate; the inner side wall face of one end of the outer sleeve nut is provided with a protruding portion matched with the platform, the protruding portion is provided with a groove, and the other end of the outer sleeve nut is provided with an internal thread section. This application can pull down it and change new cap nut rapidly when taking place thread bonding, screw thread damage and result in cap nut to need to be changed, has greatly improved work efficiency, has reduced the risk that welds again and bring.

Description

Detachable pipe joint

Technical Field

The application belongs to the pipe joint field, in particular to a detachable pipe joint.

Background

In an external pipeline system of an aircraft engine or a gas turbine, the connection form between pipelines usually adopts spherical-conical surface connection, and a ball joint is tightly pressed through an outer sleeve nut so as to be in close contact with an inner conical surface to achieve a sealing effect. Typically, the outer nut is not removable over the ball joint.

In the prior art, when the outer sleeve nut needs to be replaced due to thread bonding and thread damage, the outer sleeve nut is not detachable, and only the conduit is cut off, a new outer sleeve nut is sleeved in the conduit, and then the conduit is replaced in a welding mode. Due to the re-welding, such measures can lead to a reduction in fatigue life at the weld, leading to a reduction in service life; the pipe joint changes in position, resulting in the need for pipe sizing or increased installation stresses, increasing workload and risk of use.

Accordingly, a technical solution is desired to overcome or at least alleviate at least one of the above-mentioned drawbacks of the prior art.

Disclosure of Invention

It is an object of the present application to provide a detachable pipe joint to solve at least one problem of the prior art.

The technical scheme of the application is as follows:

a removable pipe coupling comprising:

the ball joint comprises a first pipe joint part and a ball head, and a first conduit is arranged on the inner side of the first pipe joint part;

the inner cone connector comprises a second pipe connecting part and an inner cone head, a second conduit is arranged on the inner side of the second pipe connecting part, and an outer thread section is arranged at one end of the inner cone head of the inner cone connector;

the pressing plate is annular, is sleeved at one end, close to the ball head, of the first pipe connecting part and is fixedly connected with the first pipe connecting part, a platform is arranged on the outer side wall surface of the pressing plate, and a boss is arranged on the end surface of the pressing plate;

the inner side wall surface of one end of the outer nut is provided with a protruding part matched with the platform, the protruding part is provided with a groove matched with the boss, and the other end of the outer nut is provided with an inner thread section;

the method comprises the steps that firstly, a boss of an outer nut is aligned with a platform of a pressing plate, the outer nut sequentially penetrates through a ball head of a ball joint and the pressing plate and then rotates for a preset angle, so that a groove of the outer nut is matched and connected with a boss of the pressing plate, the outer nut and the inner cone joint are continuously screwed, and the ball joint is connected with the inner cone joint.

Optionally, the first conduit is disposed inside the first pipe connection portion by welding.

Alternatively, the second pipe joint part may be provided inside the second pipe joint part by welding.

Optionally, the pressure plate is fixedly connected with the first pipe joint part by welding.

Optionally, the outer side wall surface of the outer sleeve nut is provided with a hexagonal wrenching structure.

Optionally, the outer side wall surface of the inner taper joint is provided with a hexagonal wrenching structure.

Optionally, two platforms are symmetrically arranged on the outer side wall surface of the pressing plate along the circumferential direction, and two bosses are symmetrically arranged on the end surface of the pressing plate along the circumferential direction.

Optionally, the perpendicular bisector of the two platforms is perpendicular to the perpendicular bisector of the two bosses.

The invention has at least the following beneficial technical effects:

the utility model provides a removable coupling when taking place that thread bonding, screw thread damage lead to that the outer cover nut needs to be changed, can pull down it rapidly and change new outer cover nut, has greatly improved work efficiency, has reduced the risk that welds again and bring.

Drawings

FIG. 1 is an exploded view of a detachable pipe joint according to an embodiment of the present application;

fig. 2 is an assembly view of a detachable coupling for a pipe according to an embodiment of the present application.

Wherein:

1-a nut is sleeved; 2-pressing a plate; 3-a ball joint; 31-a first conduit; 4-an inner cone joint; 41-second conduit.

Detailed Description

In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are a subset of the embodiments in the present application and not all embodiments in the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. 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 application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present application and for simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the scope of the present application.

The present application is described in further detail below with reference to fig. 1-2.

The application provides a removable coupling, includes: ball joint 3, interior cone joint 4, clamp plate 2 and outer nut 1.

Specifically, the ball joint 3 includes a first pipe joint portion and a ball head, and a first conduit 31 is arranged inside the first pipe joint portion; the inner cone joint 4 comprises a second pipe joint part and an inner cone head, a second conduit 41 is arranged on the inner side of the second pipe joint part, and an outer thread section is arranged at one end of the inner cone head of the inner cone joint 4.

Further, clamp plate 2 is cyclic annular, is the cylinder structure, and the center is equipped with the through-hole, and this clamp plate 2 cover is established in the one end that first pipe joint portion is close to the bulb to with first pipe joint portion fixed connection, be provided with the platform on the outside wall of clamp plate 2, the terminal surface is provided with the boss, before first pipe 31 is connected with the first pipe joint portion of ball joint 3, embolia ball joint 3 with clamp plate 2, and fixed with first pipe joint portion. The one end inside wall face of outer nut 1 is provided with the bellying with the platform looks adaptation of clamp plate 2, sets up the recess with the boss looks adaptation of clamp plate 2 on the bellying, and the inner cylinder diameter of bellying is greater than ball joint 3's bulb sphere external diameter, can ensure that outer nut 1 pulls down on ball joint 3, and outer nut 1's the other end is provided with interior screw thread section. During assembly, at first align the bellying of outer nut 1 with the platform of clamp plate 2, after outer nut 1 passed ball joint 3's bulb and clamp plate 2 in proper order, rotatory predetermined angle for outer nut 1's recess and clamp plate 2's boss cooperation are connected, continue to screw up outer nut 1 and interior cone adapter 4, thereby realize ball joint 3 and interior cone adapter 4's being connected.

In one embodiment of the present application, the first pipe 31 is provided inside the first pipe connection portion by welding, the second pipe connection portion 41 is provided inside the second pipe connection portion by welding, and the pressure plate 2 is fixedly connected to the first pipe connection portion by welding.

Advantageously, in one embodiment of the present application, the outer side wall surface of the outer sleeve nut 1 is provided with a hexagonal wrenching structure, and the outer side wall surface of the inner cone adapter 4 is provided with a hexagonal wrenching structure.

The utility model provides a removable coupling, the boss looks adaptation that sets up on bellying and the 2 outside wall surfaces of clamp plate on the cap nut 1, the recess of seting up on the bellying and the boss looks adaptation that 2 terminal surfaces of clamp plate set up. The platform and the boss on the pressure plate 2 have a predetermined angle in the circumferential direction, and the positions of the platform and the boss can be properly arranged according to requirements.

In an embodiment of the application, two platforms are symmetrically arranged on the outer side wall surface of the pressing plate 2 along the circumferential direction, two rectangular bosses are symmetrically arranged on the end surface of the pressing plate 2 along the circumferential direction, and the grooves on the protruding parts of the outer sleeve nut 1 are also formed into rectangular grooves. Advantageously, in this embodiment, the perpendicular bisectors of the two platforms are perpendicular to the perpendicular bisectors of the two bosses. During assembly, the outer nut 1 sequentially penetrates through the ball head of the ball joint 3 and the pressing plate 2 and then rotates 90 degrees, so that the groove of the outer nut 1 is matched and connected with the boss of the pressing plate 2. When the outer sleeve nut 1 is disassembled, the outer sleeve nut 1 is screwed until the thread of the outer sleeve nut is completely separated from the thread of the inner cone connector 4, the pressing plate 2 is pushed to be separated from the outer sleeve nut 1, and the outer sleeve nut 1 is rotated by 90 degrees to be completely disassembled.

In another embodiment of the application, three platforms are uniformly arranged on the outer side wall surface of the pressing plate 2 along the circumferential direction, three rectangular bosses are uniformly arranged on the end surface of the pressing plate 2 along the circumferential direction, and the grooves on the protruding parts of the outer sleeve nut 1 are also formed into rectangular grooves. Advantageously, in this embodiment, the three lands and the three bosses are arranged at even intervals in the circumferential direction. During assembly, the outer nut 1 sequentially penetrates through the ball head of the ball joint 3 and the pressing plate 2 and then rotates by 60 degrees, so that the groove of the outer nut 1 is matched and connected with the boss of the pressing plate 2. When the outer sleeve nut 1 is disassembled, the outer sleeve nut 1 is screwed until the thread of the outer sleeve nut is completely separated from the thread of the inner cone connector 4, the pressing plate 2 is pushed to be separated from the outer sleeve nut 1, and the outer sleeve nut 1 is rotated by 60 degrees to be completely disassembled.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A removable pipe coupling, comprising:

the ball joint (3) comprises a first pipe joint part and a ball head, and a first conduit (31) is arranged on the inner side of the first pipe joint part;

the inner cone connector (4) comprises a second pipe connecting part and an inner cone head, a second conduit (41) is arranged on the inner side of the second pipe connecting part, and an outer thread section is arranged at one end of the inner cone head of the inner cone connector (4);

the pressing plate (2) is annular, is sleeved at one end, close to the ball head, of the first pipe connecting part and is fixedly connected with the first pipe connecting part, a platform is arranged on the outer side wall surface of the pressing plate (2), and a boss is arranged on the end surface of the pressing plate;

the inner side wall surface of one end of the outer nut (1) is provided with a protruding part matched with the platform, the protruding part is provided with a groove matched with the boss, and the other end of the outer nut (1) is provided with an inner thread section;

firstly aligning the convex part of the outer nut (1) with the platform of the pressing plate (2), after the outer nut (1) sequentially passes through the ball head of the ball joint (3) and the pressing plate (2), rotating for a preset angle to enable the groove of the outer nut (1) to be matched and connected with the boss of the pressing plate (2), and continuously screwing the outer nut (1) and the inner cone joint (4) to realize the connection of the ball joint (3) and the inner cone joint (4).

2. The detachable pipe joint according to claim 1, wherein said first conduit (31) is arranged inside said first pipe connection by welding.

3. The detachable pipe joint according to claim 1, wherein the second pipe connection portion (41) is provided inside the second pipe connection portion by welding.

4. The detachable pipe joint according to claim 1, wherein the pressure plate (2) is fixedly connected to the first pipe joint portion by welding.

5. The detachable pipe joint according to claim 1, characterized in that the outer side wall of the outer nut (1) is provided with a hexagonal wrenching structure.

6. The detachable pipe joint according to claim 1, wherein the outer side wall surface of the inner cone joint (4) is provided with a hexagonal wrenching structure.

7. The detachable pipe joint according to claim 1, wherein two platforms are symmetrically arranged on the outer side wall surface of the pressure plate (2) along the circumferential direction, and two bosses are symmetrically arranged on the end surface of the pressure plate (2) along the circumferential direction.

8. The removable pipe joint according to claim 7, wherein the perpendicular bisector of both of said platforms is perpendicular to the perpendicular bisector of said two said bosses.